The cleaning device is for cleaning the inner surface of pipes. The cleaning device has two sleeves on a flexible shaft and chains extending between the sleeves. A forward end sleeve is not attached to the shaft and is biased by a spring on the shaft. The cleaning device can be adapted to different pipe sizes by altering rotation speed of the cleaning device. High rotation speed compresses the spring and moves the chains further away from the shaft to enable cleaning of larger diameter pipes with the cleaning device.

The present invention discloses a single-drive bidirectional-crawling pipe-cleaning robot, including a front body assembly, a transmission assembly, and a rear body assembly. The transmission assembly is driven by a single power source, and a transmission effect of a connecting rod mechanism, a gear mechanism, and an equal-dwell cam mechanism is used to implement alternate retraction and support of the front body assembly and the rear body assembly in a radial direction and a telescopic motion in an axial direction between the front body assembly and the rear body assembly and at the same time implement synchronous rotation of a dredging cutter head, so as to implement bidirectional crawling and pipe cleaning work of the robot along a pipe. The present invention is stable, reliable, compact, and practical, and implements single-drive bidirectional crawling and pipe cleaning in a pipe having a greatly changing pipe diameter, so that the obstacle negotiation performance and adaptability to pipe diameter changes of an in-pipe robot are effectively improved, the endurance of the in-pipe robot is improved, and practical engineering significance in cleaning of a horizontal pipe having a greatly changing pipe diameter is provided.

The group of inventions can be used for removing deposits B sewers and their simultaneous removal of various pipelines and cleaning process provides mechanization and sewage pipe work, eliminate the need for disassembly of the drain system and manual cleaning. With actuator mounted outside sewer pipe, is moved along the sewer c associated drive the movable member and fixed therein Ha cleaning tool arranged within the sewer pipe. In the initial position will cleaning tool located at the end of the sewer pipe portion is sewer piping connecting the drain pipe to the riser. Upon reaching the final cleaning tool in the positions of the junction of the sewer with the riser and c by the drive of the movable member is moved scraping tool to its original position.

According to an example aspect of the present invention, there is provided a duct cleaning apparatus comprising a frame, a coil carriage which is coupled to the frame and configured to rotate around an axis of rotation, a shaft with a first end and a second end, wherein the shaft is configured to rotate within a guide wire cable, a cleaning tool which is connected to the shaft at the first end of the shaft, a drive unit coupled to the second end of the shaft via a gear, and wherein the drive unit, the gear, control electronics and at least one battery are located within the coil carriage.

Systems, devices, and methods for drain cleaning using high voltage, high frequency AC electrical power supplied through a video push-cable are disclosed. In one embodiment, a drain cleaning system may include a cable for carrying electrical control and/or data signals as well as alternating current (AC) power at a high voltage and high frequency relative to AC mains frequencies.

A drain cleaning apparatus is described that uses a FlexShaft type drain cleaning cable. The drain cleaning apparatus includes a drum housing, a rotatable cable carrier mounted within an interior of the drum housing and a transmission assembly for transferring rotary power to an end of a FlexShaft cable residing in the interior of the drum housing. Also described are systems using these apparatuses in combination with a rotary power source such as a drill. In addition, various methods of use are described.

A plumbing snake assembly includes a drill has a handle, a motor housing, a chuck is positioned on the motor housing and a drive unit is positioned within the motor housing. The motor housing has a cable aperture extending therethrough. A plurality of flexible shafts is provided and the flexible shafts can be coupled together to form a plumbing snake for pushing through a drain pipe. Each of the flexible shafts is insertable through the cable aperture in the drill such that the drive unit engages and subsequently rotates the flexible shafts when the drive unit is turned on. A cleaning head is removably attachable to a respective one of the flexible shafts thereby facilitating the cleaning head to be positioned on a leading end of the plumbing snake defined by the flexible shafts. In this way the cleaning head engages and removes a blockage in the drain pipe.

Motor dampening provisions are described. Incorporation and use of the motor dampener(s) in a rotary type drain cleaning machine enables elimination of a clutch in the machine. Also described are clutch-free drive systems using the motor dampener(s). Also described are torque countering members that are used in conjunction with the motor dampener(s).

Various decoupler tools are described for disengaging drain cleaning equipment couplings. Such couplings typically include a component secured at an end of a drain cleaning cable and a cutter or other accessory used in a drain cleaning operation. The decoupler tools include one or more pins which are used to retract a spring-actuated plunger in one of the coupling components.

A torque limiter and a retrievable chain knocker tool, each separately configured for use with a drain cleaning apparatus are described. The drain cleaning apparatus includes a drum housing defining an interior region, a cable carrier rotatably mounted within the housing interior region, and a transmission assembly operatively configured for transferring rotary power to an end portion of flexible cable retained in the housing.