Anti-falling device for elevator maintenance

Abstract

The utility model relates to an anti-falling device, in particular to an elevator maintenance anti-falling device. The anti-falling device for elevator maintenance comprises a rod body, sliding rods, a plug pin and a limiting block, the sliding rods are connected to the left side and the right side of the rod body in a sliding mode, inserting holes which are evenly distributed at intervals are formed in the sliding rods, the plug pin is connected to the rod body in a sliding mode, and the plug pin is connected with one inserting hole in a clamped mode. One end, far away from the rod body, of the sliding rod is fixedly connected with a limiting block of a hollow structure, the screw is rotationally connected in the limiting block, the push plate is in threaded connection with the outside of the screw, and the suckers distributed left and right are connected to the front side of the push plate. By arranging the screw rod, the push plate, the suction cup, the air pump and the like, the air pump is started, the air pump moves to suck air in the suction cup into the air suction pipe and the telescopic pipe in sequence, then negative pressure is generated in the suction cup to be adsorbed to the elevator wall, the rod body is limited in the front-back direction, and the problem that the existing limiting effect is poor is effectively solved.

Description

Technical Field

[0001] The utility model relates to an anti-falling device, in particular to an anti-falling device for elevator maintenance. Background Art

[0002] Elevator maintenance refers to the process of maintaining and repairing various faults and problems that occur in elevators. Elevator maintenance includes preventive maintenance, planned maintenance, emergency maintenance and daily maintenance, etc. Its purpose is to ensure the smooth, safe and reliable operation of the elevator. The anti-fall device is a safety device. This type of device uses different working principles and structures to achieve rapid braking and locking of falling objects, or provide personnel with a safe way to hang and descend. When entering the elevator shaft to repair the elevator, an anti-fall device must be used to protect the lives of maintenance personnel.

[0003] The patent with the patent authorization announcement number CN220165530U discloses an elevator maintenance anti-fall rod, including an adjustment component, a limit component is arranged on the periphery of the adjustment component; a limit component, the limit component includes a drive rod, one end of the drive rod is connected to a cross handle, the end of the drive rod away from the cross handle is connected to a worm, the outer wall of the worm is meshed with a worm wheel, and the inner side of the worm wheel is provided with a bidirectional screw. Although the above patent can prevent the overall structure from shaking by the limit component, there are still some shortcomings in actual use. For example, when the limit block of the limit component is tightly attached to the inner wall of the elevator wall, the overall structure can only be limited in the left and right directions, resulting in the inability to limit the overall structure in the front and back directions when the elevator shakes, and the limiting effect is not good.

[0004] Therefore, a kind of elevator maintenance anti-falling device is particularly needed to solve the problems existing in the prior art. Utility Model Content

[0005] In order to overcome the shortcomings of existing patents that the overall structure can only be limited in the left and right directions, resulting in the inability to limit the overall structure in the front and rear directions when the elevator shakes, and the limiting effect is poor, the utility model provides an elevator maintenance anti-falling device.

[0006] The utility model is realized through the following technical approaches: an elevator maintenance anti-falling device comprises a rod body, a sliding rod, a pin and a limit block, the left and right sides of the rod body are slidably connected with the sliding rod, the sliding rod is provided with jacks evenly spaced, the rod body is slidably connected with a pin, the pin is engaged with one of the jacks, so that the sliding rod is fixed on the rod body, and the end of the sliding rod away from the rod body is fixedly connected with a limit block with a hollow structure, and also comprises a screw, a push plate, a suction cup, an air suction pipe, an air pump and a telescopic pipe, the limit block is rotatably connected with the screw, the outer surface of the screw is threadedly connected with the push plate, the front side of the push plate is connected with suction cups distributed on the left and right, the upper sides of two adjacent suction cups are connected with a suction pipe, the air pump is installed at the middle position of the upper part of the rod body, and the suction pipe is connected between the suction pipe and the air pump, the screw is rotated, and the push plate drives the suction cup to move forward, and then the air pump is operated, and the air inside the suction cup is sucked into the suction pipe and the telescopic pipe in turn.

[0007] In addition, it is particularly preferred that a knob is further included, and the rear end of the screw rod is fixedly connected with a knob for assisting rotation.

[0008] In addition, it is particularly preferred that a nut is further included, and the lower end of the pin is threadedly connected with a nut for fixing.

[0009] In addition, it is particularly preferred that it further includes conveying rollers and safety ropes, the middle position on the rear side of the rod body is rotatably connected to symmetrically distributed conveying rollers, and the outside of the conveying rollers is wrapped with safety ropes.

[0010] In addition, it is particularly preferred that it also includes a telescopic rod and a pulley, the telescopic rod is fixedly connected to the front side of the rod body, the telescopic rod consists of two telescopic joints, the rod body and the telescopic rod are rotatably connected to pulleys, and the safety rope slides between the two pulleys distributed longitudinally.

[0011] In addition, it is particularly preferred that a controller is also included, and a controller electrically connected to the air pump is installed on the top of the air pump.

[0012] From the above description of the structure of the utility model, it can be seen that the design starting point, concept and advantages of the utility model are: 1. By setting a screw, a push plate, a suction cup and an air pump, turning on the air pump, the air in the suction cup is sucked into the suction pipe and the telescopic tube in turn, thereby generating negative pressure inside the suction cup and adsorbing it on the elevator wall, limiting the rod body from the front and rear directions, and effectively solving the problem of poor existing limiting effect.

[0013] 2. By arranging the conveying roller and the safety rope on the rod body, there is no need to manually prepare the safety rope for binding, thereby improving the convenience of using the device.

[0014] 3. By setting up the telescopic rod and pulley, adjust the length of the telescopic rod according to the distance between the rod body and the elevator shaft wall, increase the distance between the safety rope and the elevator floor, and ensure that the safety rope does not rub against the elevator floor. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0016] Figure 2 It is a partial cross-sectional view of the rod body, sliding rod, limiting block and other components of the utility model.

[0017] Figure 3 It is a partial cross-sectional view of the screw, push plate, suction cup and other components of the utility model.

[0018] Figure 4 It is a partial cross-sectional view of the suction pipe, telescopic pipe, air pump and other components of the utility model.

[0019] Figure 5 It is a partial cross-sectional view of the safety rope, pulley, telescopic rod and other components of the utility model.

[0020] Among them, the above-mentioned drawings include the following figure marks: 1. rod body, 101. sliding rod, 102. limit block, 103. jack, 2. knob, 3. screw, 4. push plate, 5. suction cup, 6. suction pipe, 7. telescopic tube, 8. air pump, 9. latch, 901, nut, 10. conveying roller, 11. safety rope, 12. pulley, 13. telescopic rod, 14. controller. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0022] Embodiment: An elevator maintenance anti-fall device, see Figure 1-Figure 5As shown, it includes a rod body 1, a slide bar 101, a latch 9, a nut 901 and a limit block 102. The left and right sides of the rod body 1 are slidably connected with the slide bars 101. The slide bar 101 is provided with evenly spaced sockets 103. The rod body 1 is slidably connected with the latch 9, which is engaged with one of the sockets 103, so that the slide bar 101 is fixed to the rod body 1. The lower end of the latch 9 is threadedly connected with a nut 901 for fixing. The end of the slide bar 101 away from the rod body 1 is connected to the limit block 102 of a hollow structure by welding. It also includes a screw 3, a knob 2, a push plate 4, a suction cup 5, an air suction pipe 6, an air pump 8, a telescopic tube 7 and a controller 14. The limit block 102 is rotatably connected with the screw 3 inside. The rear end of the screw rod 3 is connected to a knob 2 for assisting rotation by welding, the external thread of the screw rod 3 is connected to a push plate 4, the front side of the push plate 4 is connected to suction cups 5 distributed on the left and right, an air intake pipe 6 is connected between the upper sides of two adjacent suction cups 5, an air pump 8 is connected to the middle position of the upper part of the rod body 1 by bolts, a telescopic tube 7 is connected between the suction pipe 6 and the air pump 8, and a controller 14 electrically connected to the air pump 8 is connected to the top of the air pump 8 by bolts. Two buttons are provided on the controller 14, namely a start button and an off button. By rotating the screw rod 3, the push plate 4 drives the suction cup 5 to move forward, and then the air pump 8 is operated to suck the air inside the suction cup 5 into the suction pipe 6 and the telescopic tube 7 in turn.

[0023] See also Figure 1-Figure 2 and Figure 4-Figure 5 As shown, it also includes a conveying roller 10, a safety rope 11, a telescopic rod 13 and a pulley 12. The middle position of the rear side of the rod body 1 is rotatably connected to the symmetrically distributed conveying roller 10, and the safety rope 11 is wound around the outside of the conveying roller 10. The front side of the rod body 1 is connected to the telescopic rod 13 by welding. The telescopic rod 13 consists of two telescopic joints, and a fixed component is provided between the two telescopic joints. The pulley 12 is rotatably connected to the rod body 1 and the telescopic rod 13, and the safety rope 11 slides between the two pulleys 12 distributed longitudinally.

[0024] When the device needs to be used, the staff first brings the rod body 1 into the elevator and places it on the ground near the elevator door, so that the suction cup 5 faces the wall of the elevator, then turns the nut 901 downward to disconnect the pin 9, pulls the pin 9 upward to disengage the socket 103, and then pulls the slide bar 101 outward to a suitable position to extend the rod body 1, so that the limit block 102 is close to the inner wall of the elevator wall, so as to achieve the purpose of adjusting the length of the rod body 1, so that the device is suitable for elevators of different sizes. After the adjustment is completed, push the pin 9 downward to re-engage the socket 103, and then fix the slide bar 101 on the rod body 1, and then turn the nut 901 upward to connect with the pin 9, so as to improve the stability of the engagement between the pin 9 and the socket 103, and then pinch it with your hand. Hold the knob 2 and rotate the screw 3, so that the push plate 4 drives the suction cup 5 to move forward and close to the elevator wall, and the telescopic tube 7 is stretched accordingly, and then the air pump 8 is turned on through the controller 14. The air pump 8 operates to suck the air in the suction cup 5 into the suction pipe 6 and the telescopic tube 7 in turn, so that the suction cup 5 generates negative pressure inside and adsorbs on the elevator wall, and limits the rod body 1 from the front and back directions, so as to achieve a good limiting effect. After the suction is completed, turn off the air pump 8, and then adjust the length of the telescopic rod 13 according to the distance between the rod body 1 and the elevator shaft wall, and pull the distance between the safety rope 11 and the elevator floor to ensure that the safety rope 11 does not rub against the elevator floor. Finally, the staff pulls the safety rope 11 out of the conveying roller 10 and ties it on their body for maintenance work.

[0025] It should be understood that this embodiment is only used to illustrate the present invention and is not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

Claims

1. An elevator maintenance anti-falling device, comprising a rod body (1), a slide bar (101), a latch (9) and a limit block (102), wherein the left and right sides of the rod body (1) are slidably connected with the slide bars (101), the slide bar (101) is provided with evenly spaced plug holes (103), the rod body (1) is slidably connected with the latch (9), the latch (9) is engaged with one of the plug holes (103), and the slide bar (101) is fixedly connected with a limit block (102) with a hollow structure, wherein: The invention also comprises a screw rod (3), a push plate (4), a suction cup (5), an air suction pipe (6), an air pump (8) and a telescopic pipe (7); the screw rod (3) is rotatably connected inside the limit block (102); the push plate (4) is threadedly connected to the outside of the screw rod (3); the front side of the push plate (4) is connected to suction cups (5) distributed on the left and right; the upper sides of two adjacent suction cups (5) are connected to the air suction pipe (6); the air pump (8) is installed at the middle position of the upper part of the rod body (1); and the telescopic pipe (7) is connected between the air suction pipe (6) and the air pump (8).

2. An elevator maintenance anti-falling device according to claim 1, characterized in that: It also includes a knob (2), and the rear end of the screw rod (3) is fixedly connected to the knob (2) for assisting rotation.

3. An elevator maintenance anti-falling device according to claim 2, characterized in that: It also includes a nut (901), and the lower end of the latch (9) is threadedly connected with the nut (901) for fixing.

4. An elevator maintenance anti-falling device according to claim 3, characterized in that: It also comprises a conveying roller (10) and a safety rope (11); the rear side of the rod body (1) is rotatably connected to the symmetrically distributed conveying rollers (10); and the safety rope (11) is wound around the outside of the conveying rollers (10).

5. An elevator maintenance anti-falling device according to claim 4, characterized in that: It also comprises a telescopic rod (13) and a pulley (12); the front side of the rod body (1) is fixedly connected with the telescopic rod (13); the rod body (1) and the telescopic rod (13) are both rotatably connected with the pulley (12); the safety rope (11) slides between two pulleys (12) distributed longitudinally.

6. An elevator maintenance anti-falling device according to claim 5, characterized in that: A controller (14) is also included. The top of the air pump (8) is equipped with a controller (14) electrically connected to the air pump (8).

Images