An elevation working platform includes a lower support and an upper support. At least one group of X-type elevation mechanisms is provided between the lower support and the upper support. The elevation working platform further includes an elastic element. A first end of the elastic element is connected between two end points of a first support rod or a second support rod. A second end of the elastic element is connected to the lower support or a second hinging seat capable of sliding relative to the lower support. Using the X-type elevation mechanisms, the front and back positions of the upper support do not change in an elevating process of the upper support, the structure is simple and practical, and the cost is relatively low.

An elevation working platform includes a lower support and an upper support. At least one group of X-type elevation mechanisms is provided between the lower support and the upper support. The elevation working platform further includes an elastic element. A first end of the elastic element is connected between two end points of a first support rod or a second support rod. A second end of the elastic element is connected to the lower support or a second hinging seat capable of sliding relative to the lower support. Using the X-type elevation mechanisms, the front and back positions of the upper support do not change in an elevating process of the upper support, the structure is simple and practical, and the cost is relatively low.

The present invention relates a pressure-adjustable gas spring, a lifting device and a lifting table. includes a first gas spring, and also includes a gas source for adjusting a pressure. One end of the gas source is connected with the first gas spring, and the other end of the gas source is connected with an adjustment device for adjusting the volume of the gas source the present invention which provide a good smooth effect and can realize lifting at a relatively great height.

The present invention relates a pressure-adjustable gas spring, a lifting device and a lifting table. includes a first gas spring, and also includes a gas source for adjusting a pressure. One end of the gas source is connected with the first gas spring, and the other end of the gas source is connected with an adjustment device for adjusting the volume of the gas source the present invention which provide a good smooth effect and can realize lifting at a relatively great height.

The liftable screen stand has a base assembly, an elevating device, and an assembling device. The elevating device is mounted on the base assembly and has a guiding tube, an elevating tube, a supporting tube, a pedal seat, a pedal, a pushing rod and a pneumatic cylinder. The elevating tube is movable along the guiding tube. The supporting tube is disposed in the guiding tube. The pedal seat is mounted in the base assembly. The pedal is mounted on the pedal seat. The pushing rod abuts against the pedal. The pneumatic cylinder has a gas spring, an activating valve, and an elevatable tube. The gas spring is fixed at the supporting tube. The activating valve is mounted to the gas spring. The elevatable tube is mounted to the gas spring and is fixed with the elevating tube. The assembling device is mounted to the elevating tube.

The liftable screen stand has a base assembly, an elevating device, and an assembling device. The elevating device is mounted on the base assembly and has a guiding tube, an elevating tube, a supporting tube, a pedal seat, a pedal, a pushing rod and a pneumatic cylinder. The elevating tube is movable along the guiding tube. The supporting tube is disposed in the guiding tube. The pedal seat is mounted in the base assembly. The pedal is mounted on the pedal seat. The pushing rod abuts against the pedal. The pneumatic cylinder has a gas spring, an activating valve, and an elevatable tube. The gas spring is fixed at the supporting tube. The activating valve is mounted to the gas spring. The elevatable tube is mounted to the gas spring and is fixed with the elevating tube. The assembling device is mounted to the elevating tube.

The present utility relates a locking mechanism of movable equipment, including: a first torsion spring, enclasping the movable equipment; a first connection assembly, wherein one end of the first torsion spring is fixed with the first connection assembly; and a switch, fixed with the other end of the first torsion spring, wherein when the switch is rotated, the first torsion spring is twisted, and a diameter of an inner hole of the first torsion spring is increased to release the locking of the movable equipment. The present utility model is advantageous for reducing the production cost of the movable equipment.

A dual-column office table includes two oppositely disposed stationary upright columns with a connecting rod transversely connected therebetween, two guiding columns separately disposed in the two stationary upright columns, at least one steel ball sleeve fitted on either guiding column, two driving units separately disposed in the two guiding columns, and a table top to which a top portion of each guiding column is fixedly connected. A bottom end of each guiding column is provided with a limiting structure protruding outward. A bottom end of the each driving unit is fixed to a respective table base provided at bottom portion of each stationary upright column. The table top has a bottom surface fixedly connected with a fixing seat and is provided with a lifting control switch, the lifting control switch being connected with the driving units and having an end disposed in the fixing seat.

A dual-column office table includes two oppositely disposed stationary upright columns with a connecting rod transversely connected therebetween, two guiding columns separately disposed in the two stationary upright columns, at least one steel ball sleeve fitted on either guiding column, two driving units separately disposed in the two guiding columns, and a table top to which a top portion of each guiding column is fixedly connected. A bottom end of each guiding column is provided with a limiting structure protruding outward. A bottom end of the each driving unit is fixed to a respective table base provided at bottom portion of each stationary upright column. The table top has a bottom surface fixedly connected with a fixing seat and is provided with a lifting control switch, the lifting control switch being connected with the driving units and having an end disposed in the fixing seat.

A gas cylinder quick release device has an upper bearing plate, and a lower annular collar arranged below the upper bearing plate on an axis common to the upper bearing plate and the lower annular collar. A handle is mounted to move between a first position and a second position. Movement of the handle from the first position to the second position imparts axial displacement of the upper bearing plate and the lower annular collar away from each other along the axis. The lower annular collar moves downward along the axis when the lower annular collar is axially displaced away from the upper bearing plate.