Anti-pinch device applied to construction hoist

Abstract

The utility model relates to the technical field of building construction safety, and discloses an anti-pinch device applied to a construction hoist, which comprises a lifting platform, the top of the lifting platform is fixedly connected with a plurality of receivers, the outer walls of the two sides of each receiver are respectively and rotatably connected with two driving shafts, the outer walls of the driving shafts are fixedly connected with a first connecting plate, and the first connecting plate is fixedly connected with a second connecting plate. A transmission shaft is fixedly connected to the other end of the first connecting plate, a limiting frame is fixedly connected to the outer wall of the transmission shaft, a second connecting plate is rotatably connected to the outer wall of the transmission shaft, connecting columns are rotatably connected to the outer wall of the other end of the second connecting plate, and push rods are fixedly connected to the close ends of the two connecting columns; and the outer wall of the push rod is slidably connected with a fixed pile. In the utility model, the lifting of the overhead door can be stopped in time, and the descending speed of the overhead door can be slowed down, so as to prevent the overhead door from sensing articles at the bottom of the overhead door in time, so that personnel are prevented from being injured or construction materials are prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of construction safety, in particular to an anti-pinch device applied to a construction hoist. Background Art

[0002] The anti-pinch device applied to a construction hoist is a safety device. Through the coordinated action of mechanical interlock and electrical safety switch, it ensures that the hoist cannot operate when the door is not fully closed or accidentally opened, so as to protect the safety of operators and materials. This technology is not only widely used in the field of construction, but also applicable to any scenario where a hoist is needed for vertical transportation of personnel or items, such as mines, warehouses, etc.

[0003] The main function of the anti-pinch device applied to a construction hoist is to prevent the cage from starting or continuing to operate when the door is not fully closed or accidentally opened, thus ensuring the safety of operators and transported items. In the prior art, in some devices, due to dust interference, the drive motor has a delay when the hoist runs abnormally, resulting in difficulty for the construction hoist to stop the movement of the cabin door in time, causing operators or nearby workers to be pinched or collide with the door body, and the construction materials loaded will also be damaged. For this reason, an anti-pinch device applied to a construction hoist is proposed to solve the above problems. Summary of the Utility Model

[0004] In order to make up for the above deficiencies, the utility model provides an anti-pinch device applied to a construction hoist, aiming to improve the problem that some devices in the prior art are difficult to stop the opening and closing of the cabin door in time when the hoist runs abnormally.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] An anti-pinch device applied to a construction hoist includes a lifting platform. A plurality of receivers are fixedly connected to the top of the lifting platform. Two drive shafts are respectively rotatably connected to the outer walls on both sides of the receiver. A connecting plate one is fixedly connected to the outer wall of the drive shaft. The other end of the connecting plate one is fixedly connected to a transmission shaft. A limiting frame is fixedly connected to the outer wall of the transmission shaft. A connecting plate two is rotatably connected to the outer wall of the transmission shaft. The other end of the connecting plate two is rotatably connected to a connecting column. The adjacent ends of the two connecting columns are fixedly connected to a push rod. A fixed pile is slidably connected to the outer wall of the push rod. The top of the push rod is fixedly connected to a groove plate. Two braking clips are slidably connected to the top of the groove plate. Two sliding columns are respectively fixedly connected to the upper and lower outer walls of the braking clip. A lifting buffer assembly for controlling the lifting speed of the lifting platform is fixedly connected to the top of the lifting platform;

[0007] As a further description of the above technical solution:

[0008] The lifting and buffering assembly includes two dual-axis motors. On the left and right driving ends of each dual-axis motor, two first runners are fixedly connected respectively. A protective shell is sleeved outside the first runner. A belt is sleeved outside the first runner. A connecting block is fixedly connected to the middle of the belt. The other end of the connecting block is fixedly connected to a lifting door. An inductor is fixedly connected to the bottom of the lifting door. Slide bars are fixedly connected to the outer walls on the left and right sides of the lifting door. A limiting block is fixedly connected to the outer side of the bottom of the slide bar. A second runner is fixedly connected to the bottom of the lifting platform. Two second grooves are formed in the bottom of the lifting platform. A plurality of elastic columns are fixedly connected to the bottom of the lifting platform. A bearing plate is fixedly connected to the top of the elastic column. A spring is fixedly connected to the bottom of the bearing plate. Two chutes are formed in the outer walls on the left and right sides of the lifting platform. A control board is fixedly connected to the inner wall of the lifting platform;

[0009] As a further description of the above technical solution:

[0010] A slider is fixedly connected to the bottom of the groove plate. A plurality of first grooves are formed in the top of the lifting platform. The outer wall of the bottom of the slider is slidably connected to the inner wall of the first groove;

[0011] As a further description of the above technical solution:

[0012] A lifting column is slidably connected to the outer wall of the lifting platform. A support frame is fixedly connected to the outer wall of the lifting column;

[0013] As a further description of the above technical solution:

[0014] An arc-shaped groove is formed in the groove plate. The outer wall of the sliding column is in contact with the outer wall of the arc-shaped groove;

[0015] As a further description of the above technical solution:

[0016] The top of the top sliding column is slidably connected to a fixed frame. The outer wall of the push rod is slidably connected inside the receiver. The bottom of the limiting and fixing pile is fixedly connected to the top of the lifting platform;

[0017] As a further description of the above technical solution:

[0018] The bottoms of the two dual-axis motors are both fixedly connected to the top of the lifting platform. The inner side of the belt is sleeved outside the second runner. The outer walls of the adjacent sides of the two braking clips are in contact with the outer wall of the belt;

[0019] As a further description of the above technical solution:

[0020] The outer wall of the slide rod is slidably connected to the inner wall of the slide groove, the outer wall of the limit block is slidably connected to the inner wall of the slide groove, and the bottom of the spring is fixedly connected to the bottom of the lifting platform.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, the obstacle signal is sensed by the sensor and transmitted to the receiver. The receiver receives the signal and drives the driving shaft to rotate. The driving shaft rotates to mobilize the connection plate 1 and the connection plate 2 to move, thereby driving the push rod to move, thereby driving the groove plate to move, so that the sliding column slides in the arc groove, and then the brake clamp clamps the belt to stop the lifting door in time, thereby realizing the timely stopping of the lifting door to prevent the staff from being pinched and the construction materials from being damaged.

[0023] 2. In the utility model, the double-axis motor drives the rotating wheel to rotate so as to move the belt, and the belt movement drives the lifting door to move through the connecting block. When the lifting door descends, the pressure plate is driven down, and the descending of the pressure plate compresses the spring, so that the lifting door descends smoothly, thus realizing the smooth descent of the lifting door, facilitating the sensor to sense the objects at the bottom of the lifting door in time, and improving the working accuracy of the anti-pinch device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a three-dimensional schematic diagram of an anti-pinch device applied to a construction elevator proposed by the utility model;

[0025] Figure 2 This is a structural schematic diagram of a lifting platform of an anti-pinch device applied to a construction lift proposed by the utility model;

[0026] Figure 3 This is a schematic diagram of the structure of a brake clamp of an anti-pinching device applied to a construction hoist proposed by the utility model;

[0027] Figure 4 The utility model is a schematic structural diagram of a limit block of an anti-pinch device applied to a construction elevator.

[0028] Legend:

[0029] 1. Lifting platform; 2. Lifting column; 3. Support frame; 4. Receiver; 5. Drive shaft; 6. First connecting plate; 7. Transmission shaft; 8. Limiting frame; 9. Second connecting plate; 10. Connecting column; 11. Push rod; 12. Fixed pile; 13. Groove plate; 14. Slide block; 15. Arc groove; 16. Slide post; 17. Braking clamp; 18. Biaxial motor; 19. Protection shell; 20. First runner; 21. Belt; 22. Connecting block; 23. Lifting door; 24. Inductor; 25. Slide bar; 26. Limiting block; 27. Second runner; 28. First groove; 29. Second groove; 30. Elastic column; 31. Bearing plate; 32. Spring; 33. Chute; 34. Fixed frame; 35. Control board. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] Referring to Figures 2 - 3 , an embodiment provided by the present invention: An anti-pinch device applied to a construction hoist, including a lifting platform 1, the lifting platform 1 is used to carry construction workers and materials for lifting, a plurality of receivers 4 are fixedly connected to the top of the lifting platform 1, the receivers 4 are used to receive the signals sensed by the inductor 24 and drive the drive shaft 5 to rotate, two drive shafts 5 are respectively rotatably connected to the outer walls on both sides of the receiver 4, a first connecting plate 6 is fixedly connected to the outer wall of the drive shaft 5, the other end of the first connecting plate 6 is fixedly connected to a transmission shaft 7, the second connecting plate 9 is driven to rotate through the first connecting plate 6, and the transmission shaft 7 plays a role in transmission. A limiting frame 8 is fixedly connected to the outer wall of the transmission shaft 7, the limiting frame 8 is used to limit the rotation amplitude of the first connecting plate 6 and the second connecting plate 9. The second connecting plate 9 is rotatably connected to the outer wall of the transmission shaft 7, and the other end outer wall of the second connecting plate 9 is rotatably connected to a connecting column 10. The rotation of the connecting column 10 drives the push rod 11 to move, thereby controlling the movement of the braking clamp 17. The push rod 11 is fixedly connected to the adjacent ends of the two connecting columns 10. A fixed pile 12 is slidably connected to the outer wall of the push rod 11, which is used to limit the vertical movement of the push rod 11. The top of the push rod 11 is fixedly connected to a groove plate 13, and two braking clamps 17 are slidably connected to the top of the groove plate 13. The emergency stop of the belt 21 is controlled by the opening and closing of the braking clamp 17. Two slide posts 16 are respectively fixedly connected to the upper and lower outer walls of the braking clamp 17. The movement of the braking clamp 17 is adjusted by the sliding of the slide posts 16 in the arc groove 15. A lifting buffer assembly for controlling the lifting speed of the lifting platform 1 is fixedly connected to the top of the lifting platform 1.

[0032] Referring toFigure 1 , Figure 2 , Figure 4 The lifting buffer assembly includes two dual-axis motors 18. The left and right driving ends of the dual-axis motors 18 are respectively fixedly connected to two rotating wheels 20. The movement of the belt 21 is controlled by the rotating wheel 20 and the rotating wheel 27. The outer sleeve of the rotating wheel 20 is provided with a protective shell 19 for protecting the rotating wheel from interference factors such as dust. The outer sleeve of the rotating wheel 20 is provided with a belt 21. The movement of the belt 21 drives the movement of the connecting block 22, thereby controlling the lifting and lowering of the lifting door 23. The middle end of the belt 21 is fixedly connected to the connecting block 22. The other end of the connecting block 22 is fixedly connected to a lifting door 23. The lifting platform 1 is opened through the lifting door 23 to facilitate the lifting of construction personnel and construction materials. The bottom of the lifting door 23 is fixedly connected to a sensor 24. The sensor 24 is used to sense the items at the bottom of the lifting door 23 when the lifting door 23 descends, so as to control the lifting door 23 to stop in time when the loading is not complete. The left and right outer walls of the lifting door 23 are fixedly connected to sliding rods 25. The sliding of the sliding rods 25 in the sliding grooves 33 makes the sliding of the lifting door 23 stable. The bottom outer side of the lifting platform 1 is fixedly connected with a limit block 26, which is used to limit the lifting range of the lifting door 23 to prevent the lifting door 23 from leaving the moving track. The bottom of the lifting platform 1 is fixedly connected with a rotating wheel 27. The bottom of the lifting platform 1 is provided with two grooves 29. The grooves 29 are used to carry the sensor 24 at the bottom of the lifting door 23. The bottom of the lifting platform 1 is fixedly connected with a plurality of elastic columns 30. The elastic columns 30 are made of a material with good elasticity. The top of the elastic column 30 is fixedly connected with a pressure plate 31. The bottom of the pressure plate 31 is fixedly connected There is a spring 32. When the lifting platform 1 descends, the pressure plate 31 contacts the bottom of the lifting platform 1 to compress the spring 32, slowing down the descent of the lifting platform 1 to prevent the lifting platform 1 from descending too fast and causing the sensor 24 to be unable to sense in time. Two slide grooves 33 are provided on the left and right outer walls of the lifting platform 1. The slide grooves 33 provide tracks for the movement of the slide rod 25 and the limit block 26. The inner wall of the lifting platform 1 is fixedly connected with a control panel 35. The opening and closing of the lifting door 23 and the lifting height of the lifting platform 1 can be controlled by the control panel 35.

[0033] Reference Figure 2 , Figure 3 , Figure 4, a slider 14 is fixedly connected to the bottom of the groove plate 13. The slider 14 slides to drive the groove plate 13 to slide. A plurality of first grooves 28 are formed in the top of the lifting platform 1 to provide a track for the movement of the slider 14. The outer wall of the bottom of the slider 14 is slidably connected to the inner wall of the first groove 28 to limit the moving range of the slider 14 and prevent the brake clamp 17 from being damaged. A lifting column 2 is slidably connected to the outer wall of the lifting platform 1 to provide a movement track for the lifting of the lifting platform 1. A support frame 3 is fixedly connected to the outer wall of the lifting column 2 to stably lift the lifting platform 1. An arc-shaped groove 15 is formed inside the groove plate 13 to provide a sliding track for the sliding of the sliding column 16. The outer wall of the sliding column 16 is in contact with the outer wall of the arc-shaped groove 15. The sliding of the sliding column 16 in the arc-shaped groove 15 drives the two brake clamps 17 to open and close. The top of the top sliding column 16 is slidably connected to a fixing frame 34 to stabilize the entire braking assembly. The outer wall of the push rod 11 is slidably connected inside the receiver 4 to limit the vertical movement of the push rod 11. The bottom of the fixing pile 12 is fixedly connected to the top of the lifting platform 1. The bottoms of the two double-shaft motors 18 are both fixedly connected to the top of the lifting platform 1 to fix the double-shaft motors 18. The inner side of the belt 21 is sleeved on the outer side of the second runner 27. The outer walls of the adjacent sides of the two brake clamps 17 are in contact with the outer wall of the belt 21. When the brake clamps 17 are activated, the movement of the belt 21 is braked, so that the descent of the lifting door 23 stops in time. The outer wall of the sliding rod 25 is slidably connected to the inner wall of the chute 33. The outer wall of the limiting block 26 is slidably connected to the inner wall of the chute 33 to limit the lifting amplitude of the lifting door 23. The bottom of the spring 32 is fixedly connected to the bottom of the lifting platform 1 to support the spring 32 and prevent the spring 32 from shifting when deforming.

[0034] Working principle: The double-shaft motor 18 is started by controlling the control board 35. The operation of the double-shaft motor 18 drives the first runner 20 to rotate. The rotation of the first runner 20 and the cooperation with the second runner 27 make the belt 21 rotate smoothly, thereby driving the connecting block 22 to lift, and thus controlling the lifting of the lifting door 23. When the lifting door 23 descends, it contacts the bearing plate 31 and drives the bearing plate 31 to descend and compress the spring 32 to slow down the descending speed of the lifting door 23, so as to facilitate the sensor 24 at the bottom of the lifting door 23 to sense. When there is an obstacle at the bottom of the lifting door 23, the sensor transmits a signal to the receiver 4. The receiver 4 operates to make the drive shaft 5 rotate, thereby driving the first connecting plate 6 to rotate, and then driving the second connecting plate 9 to rotate through the transmission shaft 7. The rotation of the second connecting plate 9 drives the push rod 11 to move forward through the connecting column 10, thereby driving the slider 14 at the bottom of the groove plate 13 to slide in the first groove 28, so that the sliding column 16 slides along the arc-shaped groove 15, making the two brake clamps 17 clamp the belt 21 and stop the movement of the belt 21, so that the lifting door 23 stops moving, in order to prevent the lifting door 23 from descending and injuring construction workers and damaging construction materials.

[0035] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An anti-pinch device for a construction elevator, comprising a lifting platform (1), characterized in that: The top of the lifting platform (1) is fixedly connected to a plurality of receivers (4), and the outer walls on both sides of the receivers (4) are rotatably connected to two drive shafts (5), the outer wall of the drive shaft (5) is fixedly connected to a connecting plate 1 (6), and the other end of the connecting plate 1 (6) is fixedly connected to a transmission shaft (7), the outer wall of the transmission shaft (7) is fixedly connected to a limiting frame (8), the outer wall of the transmission shaft (7) is rotatably connected to a connecting plate 2 (9), and the outer wall of the other end of the connecting plate 2 (9) is rotatably connected to a connecting column (10 ), the adjacent ends of the two connecting columns (10) are fixedly connected with a push rod (11), the outer wall of the push rod (11) is slidably connected with a fixed pile (12), the top of the push rod (11) is fixedly connected with a groove plate (13), the top of the groove plate (13) is slidably connected with two brake clamps (17), the upper and lower outer walls of the brake clamp (17) are respectively fixedly connected with two sliding columns (16), and the top of the lifting platform (1) is fixedly connected with a lifting buffer component for controlling the lifting speed of the lifting platform (1).

2. The anti-pinch device used in a construction elevator according to claim 1, characterized in that: The lifting buffer assembly comprises two double-axis motors (18), the left and right driving ends of the double-axis motors (18) are respectively fixedly connected to two rotating wheels (20), the outer side of the rotating wheel (20) is provided with a protective shell (19), the outer side of the rotating wheel (20) is provided with a belt (21), the middle end of the belt (21) is fixedly connected to a connecting block (22), the other end of the connecting block (22) is fixedly connected to a lifting door (23), the bottom of the lifting door (23) is fixedly connected to a sensor (24), and the left and right outer walls of the lifting door (23) are fixedly connected to sliding rods (25). ), the outer side of the bottom of the slide rod (25) is fixedly connected to a limit block (26), the bottom of the lifting platform (1) is fixedly connected to a rotating wheel (27), the bottom of the lifting platform (1) is provided with two grooves (29), the bottom of the lifting platform (1) is fixedly connected to a plurality of elastic columns (30), the top of the elastic columns (30) is fixedly connected to a pressure plate (31), the bottom of the pressure plate (31) is fixedly connected to a spring (32), the left and right outer walls of the lifting platform (1) are provided with two slide grooves (33), and the inner wall of the lifting platform (1) is fixedly connected to a control panel (35).

3. The anti-pinch device used in a construction elevator according to claim 1 is characterized in that: The bottom of the groove plate (13) is fixedly connected to a slider (14), the top of the lifting platform (1) is provided with a plurality of grooves (28), and the bottom outer wall of the slider (14) is slidably connected to the inner wall of the groove (28).

4. The anti-pinch device used in a construction hoist according to claim 1 is characterized in that: The outer wall of the lifting platform (1) is slidably connected to a lifting column (2), and the outer wall of the lifting column (2) is fixedly connected to a support frame (3).

5. The anti-pinch device used in a construction elevator according to claim 1 is characterized in that: An arc-shaped groove (15) is provided inside the groove plate (13), and the outer wall of the sliding column (16) contacts the outer wall of the arc-shaped groove (15).

6. The anti-pinch device used in a construction elevator according to claim 1, characterized in that: The top of the sliding column (16) is slidably connected to a fixing frame (34), the outer wall of the push rod (11) is slidably connected to the inside of the receiver (4), and the bottom of the fixing pile (12) is fixedly connected to the top of the lifting platform (1).

7. The anti-pinch device used in a construction elevator according to claim 2, characterized in that: The bottoms of the two dual-axis motors (18) are fixedly connected to the top of the lifting platform (1), the inner side of the belt (21) is sleeved on the outer side of the second rotating wheel (27), and the outer walls of the adjacent sides of the two brake clamps (17) are in contact with the outer wall of the belt (21).

8. The anti-pinch device used in a construction elevator according to claim 2, characterized in that: The outer wall of the slide rod (25) is slidably connected to the inner wall of the slide groove (33), the outer wall of the limit block (26) is slidably connected to the inner wall of the slide groove (33), and the bottom of the spring (32) is fixedly connected to the bottom of the lifting platform (1).

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