Abstract
A suspended moving and adaptive coalburst-preventing hydraulic support with a pile foundation is provided, and relates to the technical field of coal mine roadway support. The suspended moving and adaptive coalburst-preventing hydraulic support with a pile foundation includes a top beam and side beam structures. The side beam structure includes a first side beam. Upper ends of third side beams are arranged inside an installation cavity. A top energy absorption component is arranged inside the installation cavity between the left and right third side beams. The third side beams are in slip connection with sliding limit slots through a first guide pin and a second guide pin. A second side beam, the third side beam and a hydraulic support column form a proximately triangular stable support structure.
Claims
1. A suspended moving and adaptive coalburst-preventing hydraulic support with a pile foundation, comprising a top beam (4) and side beam structures, wherein the side beam structures are arranged on both sides of the top beam (4) to support a roadway top plate and two sides, wherein the side beam structure comprises a first side beam (1), the first side beam (1) being arranged on a pile foundation (101), the pile foundation (101) being deeply buried in a deep stable rock stratum of a roadway base plate (100), a second side beam (2) being arranged above the first side beam (1), a third side beam (3) being arranged above the second side beam (2), an installation cavity (43) being formed in the top beam (4), an upper end of the third side beam (3) being arranged inside the installation cavity (43), and a top energy absorption component (9) being arranged in the installation cavity (43) between the left and right third side beams (3); wherein sliding limit slots (41) are formed in front and rear side surfaces of the top beam (4), the third side beam (3) being in slip connection with the sliding limit slot (41) through a first guide pin (32) and a second guide pin (33); and wherein the second side beam (2) and the third side beam (3) are in hinged connection and are connected and supported by a hydraulic support column (5), a front-and-back guide slot (12) being formed in the first side beam (1), the bottom of the second side beam (2) and the hydraulic support column (5) being in hinged connection and being slidably arranged in the guide slot (12) through a hinge pin, and a hinged part (31) of the hydraulic support column (5) and the third side beam (3) being spaced with both ends of the third side beam (3) so that the second side beam (2), the third side beam (3) and the hydraulic support column (5) form a proximately triangular stable support structure.
2. The suspended moving and adaptive coalburst-preventing hydraulic support with a pile foundation according to claim 1, wherein bosses (43) are arranged on the lower side of the top beam (4), a through cavity (45) being formed between the left and right bosses (43).
3. The suspended moving and adaptive coalburst-preventing hydraulic support with a pile foundation according to claim 1, wherein guide wheels (34) are arranged at the first guide pins (32) on both sides of the third side beam (3), the guide wheel (34) being capable of sliding along the upper part of the boss (43).
4. The suspended moving and adaptive coalburst-preventing hydraulic support with a pile foundation according to claim 1, wherein a left-and-right U-shaped notch (13) is formed in the first side beam (1), junctions between the second side beam (2) and the third side beam (3), between the hydraulic support column (5) and the third side beam (3) and between the hydraulic support column (5) and the second side beam (2) being provided with rotating receding spaces.
5. The suspended moving and adaptive coalburst-preventing hydraulic support with a pile foundation according to claim 1, wherein a suspension device is arranged on the top of the center of the top beam (4), wherein a fixed device (7) is arranged at the bottom of the center of the top beam (4), wherein a folded support is matched with a bull head rail through the suspension device above the top beam (4), and wherein the bull head rail is installed and supported by the fixed device between other supports.
6. The suspended moving and adaptive coalburst-preventing hydraulic support with a pile foundation according to claim 5, wherein the fixed device (7) is connected to the boss (43) through bolts (72), and wherein the two fixed devices (7) are arranged below the top beam (4) and are respectively matched with connecting holes (71) through screws and connected to the left and right sides of the bull head rail.
7. The suspended moving and adaptive coalburst-preventing hydraulic support with a pile foundation according to claim 5, wherein the suspension device is a detachable pendant (6), the detachable pendant (6) being installed above the top beam (4) through bolts.
8. The suspended moving and adaptive coalburst-preventing hydraulic support with a pile foundation according to claim 5, wherein suspension device is a rotating pendant (8), the rotating pendant (8) comprising a first hook (81) and a second hook (82), the first hook (81) and the second hook (82) being hinged and connected with the top beam (4) through rotating shafts (83), a torsional spring or a tension spring being arranged between the first hook (81) and the second hook (82), a baffle plate (44) being fixedly arranged on the top beam (4) between the first hook (81) and the second hook (82), and upper surfaces of the first hook (81) and the second hook (82) being arc surfaces.
9. The suspended moving and adaptive coalburst-preventing hydraulic support with a pile foundation according to claim 8, wherein the rotating pendants (8) are arranged on the front and rear sides of the top beam (4).
10. The suspended moving and adaptive coalburst-preventing hydraulic support with a pile foundation according to claim 5, wherein a contact surface of the suspension device and the bull head rail is embedded with steel.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0023] FIG. 1 is a half-section structure diagram of the present disclosure.
[0024] FIG. 2 is a structure diagram of the present disclosure in the folding process.
[0025] FIG. 3 is a structure diagram after the present disclosure is folded.
[0026] FIG. 4 is a cross-section structure diagram of a top beam at a fixed device in the present disclosure.
[0027] FIG. 5 is a top-view cross-section structure diagram of a top beam at a guide wheel in the present disclosure.
[0028] FIG. 6 is a structure diagram that a folded support is suspended in the present disclosure.
[0029] FIG. 7 is a structure diagram of a rotating pendant and a top beam of the rotating pendant in the present disclosure.
DETAILED DESCRIPTION OF THE EMBODIMENTS
[0030] In order to further understand the content of the present disclosure, the present disclosure is further described in conjunction with the following attached figures and embodiments. It should be understood that the embodiments are only used for explaining, instead of limiting, the present disclosure.
Embodiment I
[0031] As shown in FIG. 1 to FIG. 5, a suspended moving and adaptive coalburst-preventing hydraulic support with a pile foundation includes a top beam 4 and side beam structures. The side beam structures are arranged on both sides of the top beam 4 to support a roadway top plate and two sides. A roadway base plate support device can be provided according to requirements. Wherein, the side beam structure includes a first side beam 1. The first side beam 1 is arranged on a pile foundation 101 in movable sleeve joint, bolted connection or other equivalent connection manners. The pile foundation 101 is deeply buried in a deep stable rock stratum of a roadway base plate 100. The pile foundations 101 can be spaced in a pre-supported roadway in advance, and the height of the pile foundation 101 protruding out of the roadway top plate 100 is low, so that the influence on daily transportation in a roadway is ignorable. The stability of the pile foundation 101 is improved with the stability of the deep rock stratum, and the overall stability of the hydraulic support is further improved. The horizontal loading effect for the base plate is blocked, and the possibility of coalburst damage of the base plate in a floor heave phenomenon due to an extrusion effect of horizontal loading on the roadway base plate is weakened. A second side beam 2 is arranged above the first side beam 1. A third side beam 3 is arranged above the second side beam 2. An installation cavity 43 is formed in the top beam 4. An upper end of the third side beam 3 is arranged inside the installation cavity 43. A top energy absorption component 9 is arranged in the installation cavity 43 between the left and right third side beams 3. When the hydraulic support is subjected to a transverse loading effect, the left and right third side beams 3 have a sliding trend inside the installation cavity 43, so that loading for the top energy absorption component 9 is realized. Sliding limit slots 41 are formed in front and rear side surfaces of the top beam 4. The third side beam 3 is in slip connection with the sliding limit slot 41 through a first guide pin 32 and a second guide pin 33 to realize guide and limitation on the third side beam 3 in a sliding direction. The second side beam 2 and the third side beam 3 are in hinged connection and are connected and supported by a hydraulic support column 5. A front-and-back guide slot 12 is formed in the first side beam 1. The bottom of the second side beam 2 and the hydraulic support column 5 are in hinged connection and are slidably arranged in the guide slot 12 through a hinge pin. A hinged part 31 of the hydraulic support column 5 and the third side beam 3 is spaced with both ends of the third side beam 3 so that the second side beam 2, the third side beam 3 and the hydraulic support column 5 form a proximately triangular stable support structure. Under the situation that the support is supported in a roadway section, when a vertical load is generated by subsidence deformation on the top of the roadway, the whole triangular stable support structure moves downward, and a lower end of the second side beam 2 slides in the guide slot 12 of the first side beam 1 to compress an internal bottom energy absorption component 11, so that the role of vertical receding energy absorption is achieved. When a transverse load is generated by inward deformation of two sides of the roadway, the whole triangular stable support structure slides to the center of the roadway, and the third side beam 3 slides in the sliding limit slot 41 to compress the internal top energy absorption component 9, so that the role of transverse receding energy absorption is achieved. In addition, because the internal bottom energy absorption component 11 of the first side beam 1 is obliquely arranged, the effect of receding energy absorption can be achieved to a certain extent regardless of a transverse load or a longitudinal load, and the hydraulic support is high in adaptability.
[0032] Referring to FIGS. 1, 4 and 5, bosses 43 are arranged on the lower side of the top beam 4, and a through cavity 45 is formed between the left and right bosses 43, so that when the third side beam 3 slides along the sliding limit slot 41, a lower part of the third side beam 3 can realize the sliding of the side beam structure by means of the through cavity 45.
[0033] Referring to FIGS. 3 and 5, guide wheels 34 are arranged at the first guide pins 32 on both sides of the third side beam 3. The guide wheel 34 is capable of sliding along the upper part of the boss 43 to improve a loaded working condition of the first guide pin 32 and the second guide pin 33.
[0034] Referring to FIGS. 1, 2 and 6, a left-and-right U-shaped notch 13 is formed in the first side beam 1. Junctions between the second side beam 2 and the third side beam 3, between the hydraulic support column 5 and the third side beam 3 and between the hydraulic support column 5 and the second side beam 2 are provided with rotating receding spaces, so that the side beam structure can be folded. As shown in FIG. 3, when the side beam structure is folded, whether the first side beam 1 is dismantled or not can be selected according to space size or other requirements. The first side beam 1 is dismantled for individual transportation in the embodiment. As shown in FIG. 2, to fold the structure, the first guide pin 32 is dismantled, and then an upper end of the hydraulic support column 5 is dismantled from the third side beam 3. Upper ends of the left and right hydraulic support columns 5 are hinged to a connector 51. At the same time, a folded auxiliary jack 52 is also hinged to the connector 51. The support is further driven to be folded by controlling the telescoping of the folded auxiliary jack 52, and then the upper ends of the two hydraulic support columns 5 are pushed to the positions of the sliding limit slots 41 of the third side beam 4. And then, the upper ends of the two hydraulic support columns 5 are dismantled from the connector and hinged into the sliding limit slots 41 of the top beam, as shown in FIG. 3.
[0035] Referring to FIGS. 1-3 and 6, a suspension device is arranged on the top of the center of the top beam 4. A fixed device 7 is arranged at the bottom of the center of the top beam 4. A folded support is matched with a bull head rail through the suspension device above the top beam 4. The bull head rail (not shown) is installed and supported by the fixed device 7 between other supports. Overall suspended moving of the support can be realized.
[0036] Referring to FIG. 4, the fixed device 7 is connected to the boss 43 through bolts 72. The two fixed devices 7 are arranged below the top beam 4 and are respectively matched with connecting holes 71 through screws and connected to the left and right sides of the bull head rail. The bull head rail is fixedly arranged above the roadway through mutual effect of different supports on the bull head rail.
[0037] In one embodiment, the suspension device is a detachable pendant 6, as shown in FIGS. 1-3 and 6. The detachable pendant 6 is installed above the top beam 4 through bolts. After the support is folded, the support can be directly suspended on the bull head rail for sliding, as shown in FIG. 6.
[0038] As shown in FIG. 7, in another embodiment, the suspension device is a rotating pendant 8. The rotating pendant 8 includes a first hook 81 and a second hook 82. The first hook 81 and the second hook 82 are hinged and connected with the top beam 4 through rotating shafts 83. A torsional spring or a tension spring (not shown) is arranged between the first hook 81 and the second hook 82, so that the first hook 81 and the second hook 82 tend to bias in opposite directions. A baffle plate 44 is fixedly arranged on the top beam 4 between the first hook 81 and the second hook 82. When the first hook 81 and the second hook 82 rotate in opposite directions under the effect of the torsional spring or the tension spring, the first hook 81 and the second hook 82 are blocked by the baffle plate 44 and cannot continue to get close to each other. At that time, the first hook 81 and the second hook 82 can drive the folded support to be suspended on the bull head rail. Upper surfaces of the first hook 81 and the second hook 82 are arc surfaces. When the roadway is supported by the support, the first hook 81 and the second hook 82 make contact with a top surface of the roadway, the first hook 81 and the second hook 82 rotate in opposite directions with the effect of a lifting load, so that the rotating pendant 8 does not affect a supporting effect of the support.
[0039] The rotating pendants 8 are arranged on the front and rear sides of the top beam 4, so that the folded support is suspended on the bull head rail to slide more stably.
[0040] A contact surface of the suspension device and the bull head rail is embedded with steel so as to reduce sliding resistance between the suspension device and the bull head rail.
[0041] The present disclosure and the embodiment thereof are described above, the description is not limited, only one of the embodiments of the present disclosure is shown in the attached figures, and the actual structure is not limited in this way. In conclusion, if any person skilled in the art is inspired by the technical scheme, the structural mode and the embodiment similar to those of the technical scheme are not creatively designed under the condition of without departing from the creation purpose of the present disclosure, and the structural mode and the embodiment belong to the protection range of the present disclosure.
