Stacking machine safety device

Abstract

The utility model relates to the technical field of stacking machines, and discloses a stacking machine safety device which comprises a cargo carrying table and a stand column, a guide rail is fixedly installed on the outer wall of the inner side of the stand column, a driven wheel assembly is fixedly installed on the outer wall, close to the top, of the stand column, and a speed limiter assembly is fixedly installed on the outer wall, close to the bottom, of the stand column. And braking devices are arranged on the two sides of the cargo carrying table. Floating design is adopted for the progressive safety tongs on the cargo carrying table, the safety tongs guide wheels are used for guiding on the guide rails, the pressure of the safety tongs guide wheels and the guide rails can be adjusted, the safety tongs guide wheels can drive the progressive safety tongs to move left and right in the cargo carrying table, and errors between the guide rails and stand columns guided by the cargo carrying table can be compensated. Through the design of the electric push rod, the progressive safety tongs can recover to the initial state, the automatic recovery function is achieved, and the problem that the safety is low due to manual recovery after braking is avoided.

Description

Technical Field

[0001] This utility model relates to the field of stacker crane technology, specifically to a stacker crane safety device. Background Technology

[0002] The stacker crane is driven by a travel motor that moves the wheels horizontally along the lower guide rail via a drive shaft. A lifting motor, via a steel cable, drives the loading platform vertically, and the forks on the loading platform extend and retract. Through these three-dimensional movements, goods can be retrieved from or moved into designated storage locations. To enhance safety, a safety clamp is installed on the loading platform to prevent accidental falls. The clamp's action generates a gripping friction force, stopping the platform from falling.

[0003] In actual use, due to the errors of the guide rail and column, as well as the small gap between the safety clamp and the guide rail, false triggering is likely to occur. False triggering will cause the loading platform to brake suddenly on the guide rail. In addition, once the safety device is triggered, it cannot automatically reset and requires manual reset, which can easily lead to personal safety issues. Utility Model Content

[0004] The purpose of this invention is to provide a stacker crane safety device that solves the problems of the safety clamp being easily triggered during use and failing to automatically reset after being triggered in the prior art.

[0005] This utility model provides the following technical solution: a stacker crane safety device, including a loading platform and a column. A guide rail is fixedly installed on the outer wall of the inner side of the column. A driven wheel assembly is fixedly installed on the outer wall of the column near the top. A speed limiter assembly is fixedly installed on the outer wall of the column near the bottom. Braking devices are provided on both sides of the loading platform. A safety brake wire rope is fixedly connected to the working end of the speed limiter assembly. The outer wall of the safety brake wire rope is slidably connected to the outer wall of the driven wheel assembly. A rope lock connector is fixedly connected to the end of the safety brake wire rope away from the speed limiter assembly. A loading platform moving wheel is rotatably connected to the side of the loading platform.

[0006] As a preferred embodiment of the above technical solution, the braking device includes a progressive safety clamp, an active side hinge seat, an electric actuator, an active side hinge, a driven side hinge seat, and a driven side hinge. The number of progressive safety clamps is set to two, and the two progressive safety clamps are respectively arranged on both sides of the loading platform. The active side hinge seat is fixedly installed on the left side of the loading platform. The number of electric actuators is set to two, one of which is rotatably connected to the inner wall of the active side hinge seat. The active side hinge is fixedly installed on the left side of the loading platform. An active pull rod is rotatably connected to the outer wall of the active side hinge. The end of the rope lock connector away from the safety braking wire rope is detachably connected to the active pull rod.

[0007] As a preferred embodiment of the above technical solution, the telescopic end of one of the electric actuators is slidably connected to the active pull rod, an active side safety clamp pull rod is slidably connected to the active pull rod, and the bottom of the active side safety clamp pull rod is fixedly connected to the trigger end of one of the progressive safety clamps.

[0008] As a preferred embodiment of the above technical solution, a brake cable is detachably connected to the outer wall of the active pull rod.

[0009] As a preferred embodiment of the above technical solution, the driven side hinge seat is fixedly installed on the right side of the loading platform, another electric push rod is rotatably connected to the inner wall of the driven side hinge seat, the driven side hinge is rotatably connected to the right side of the loading platform, and a driven pull rod is rotatably connected to the outer wall of the driven side hinge.

[0010] As a preferred embodiment of the above technical solution, the end of the brake cable away from the active lever is detachably connected to the end of the driven lever, the telescopic end of the other electric actuator is slidably connected to the driven lever, a driven side safety clamp lever is slidably connected to the inner wall of the driven lever, and the bottom of the driven side safety clamp lever is fixedly connected to the trigger end of the other progressive safety clamp.

[0011] As a preferred embodiment of the above technical solution, the distance from the working end of the progressive safety clamp to the guide rail is 3±0.5mm.

[0012] As a preferred embodiment of the above technical solution, an upper connecting plate and a lower connecting plate are fixedly installed at the top and bottom of the progressive safety gear, respectively. A safety gear guide wheel shaft is fixedly installed on both the upper and lower connecting plates, and a safety gear guide wheel is rotatably connected to the outer wall of the safety gear guide wheel shaft.

[0013] As a preferred embodiment of the above technical solution, an adjusting rod is fixedly connected to the outer wall of both the upper and lower connecting plates, a tension spring is fixedly connected to the middle of the adjusting rod, and the end of the adjusting rod away from the upper and lower connecting plates is fixedly connected to the loading platform.

[0014] As a preferred embodiment of the above technical solution, both the upper connecting plate and the lower connecting plate are provided with limiting rollers and clamping blocks, and a loading platform mounting plate is fixedly installed on the loading platform. The limiting rollers and clamping blocks are detachably connected to the loading platform mounting plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention uses a speed limiter assembly to brake the safety brake wire rope. The active pull rod is pulled up, and the driven pull rod is pulled by the brake cable. The progressive safety clamps on both sides can be triggered simultaneously, achieving the braking function. This device has a simple and reliable structure with a fast response. The progressive safety clamps adopt a floating design on the loading platform, guided by safety clamp guide wheels on guide rails. The pressure between the safety clamp guide wheels and the guide rails can be adjusted. The safety clamp guide wheels can drive the progressive safety clamps to move left and right within the loading platform, compensating for errors between the guide rails and the platform's guide columns, thus preventing accidental triggering of the progressive safety clamps. The electric push rod design can push the active and driven pull rods to reset, thereby causing the active and driven safety clamp pull rods to reset as well, restoring the progressive safety clamps to their initial state and achieving automatic reset. This avoids the safety issues associated with manual reset after braking. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the active side of the braking device of this utility model;

[0019] Figure 3 This is a schematic diagram of the driven side of the braking device of this utility model;

[0020] Figure 4 This is a schematic diagram of the motion structure of the progressive safety clamp and guide rail of this utility model;

[0021] Figure 5 This is a structural schematic diagram of the mounting component of the progressive safety clamp of this utility model;

[0022] Figure 6 This is a schematic diagram of the installation position structure of the progressive safety clamp of this utility model;

[0023] Figure 7 This is a schematic diagram of the structure of the present invention during active side braking;

[0024] Figure 8 This is a schematic diagram of the structure of the present invention after active side reset.

[0025] In the diagram: 1. Cargo platform; 2. Column; 3. Guide rail; 4. Driven wheel assembly; 5. Speed ​​limiter assembly; 6. Braking device; 7. Safety brake wire rope; 8. Rope lock connector; 9. Active pull rod; 10. Cargo platform moving wheel; 11. Progressive safety clamp; 12. Safety clamp guide wheel shaft; 13. Safety clamp guide wheel; 14. Upper connecting plate; 15. Lower connecting plate; 16. Tension spring; 17. Limiting roller; 18. Clamping block; 19. Adjusting pull rod; 20. Electric push rod; 21. Active side hinge seat; 22. Active side hinge; 23. Active side safety clamp pull rod; 24. Brake cable; 27. Driven pull rod; 29. ​​Driven side hinge; 30. Driven side hinge seat; 31. Driven side safety clamp pull rod; 32. Cargo platform mounting plate. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0027] like Figures 1-8 As shown, this utility model provides a technical solution: a stacker crane safety device, including a loading platform 1 and a column 2. A guide rail 3 is fixedly installed on the outer wall of the inner side of the column 2. A driven wheel assembly 4 is fixedly installed on the outer wall of the column 2 near the top. A speed limiter assembly 5 is fixedly installed on the outer wall of the column 2 near the bottom. Braking devices 6 are provided on both sides of the loading platform 1. A safety brake wire rope 7 is fixedly connected to the working end of the speed limiter assembly 5. The outer wall of the safety brake wire rope 7 is slidably connected to the outer wall of the driven wheel assembly 4. The end of the safety brake wire rope 7 away from the speed limiter assembly 5 is fixedly connected to the rope lock connector 8. The side of the loading platform 1 is rotatably connected to the loading platform moving wheel 10. When the loading platform 1 falls too fast, the speed limiter assembly 5 will generate mechanical braking to pull the safety brake wire rope 7. After the safety brake wire rope 7 is braked, when the loading platform 1 continues to fall, the safety brake wire rope 7 will pull the active pull rod 9 upward through the rope lock connector 8. The braking device 6 will generate braking action, so that the progressive safety clamp 11 is locked on the guide rail 3.

[0028] As one implementation method in this embodiment, such as Figure 2 , Figure 3 , Figure 4 , Figure 7 , Figure 8As shown, the braking device 6 includes a progressive safety clamp 11, an active side hinge seat 21, an electric actuator 20, an active side hinge 22, a driven side hinge seat 30, and a driven side hinge 29. Two progressive safety clamps 11 are provided, respectively located on opposite sides of the loading platform 1. The active side hinge seat 21 is fixedly installed on the left side of the loading platform 1. Two electric actuators 20 are provided, one of which is rotatably connected to the inner wall of the active side hinge seat 21. The active side hinge 22 is fixedly installed on the left side of the loading platform 1, and an active pull rod 9 is rotatably connected to the outer wall of the active side hinge 22. The end of the rope lock connector 8 away from the safety braking wire rope 7 is detachably connected to the active pull rod 9. The telescopic end of one of the electric actuators 20 is slidably connected to the active pull rod 9. An active side safety clamp pull rod 23 is slidably connected to the active pull rod 9. The bottom of the safety clamp lever 23 is fixedly connected to the trigger end of one of the progressive safety clamps 11. A brake cable 24 is detachably connected to the outer wall of the driving lever 9. The driven side hinge seat 30 is fixedly installed on the right side of the loading platform 1. Another electric push rod 20 is rotatably connected to the inner wall of the driven side hinge seat 30. The driven side hinge 29 is rotatably connected to the right side of the loading platform 1. A driven lever 27 is rotatably connected to the outer wall of the driven side hinge 29. The end of the brake cable 24 away from the driving lever 9 is detachably connected to the end of the driven lever 27. The telescopic end of another electric push rod 20 is slidably connected to the driven lever 27. A driven side safety clamp lever 31 is slidably connected to the inner wall of the driven lever 27. The bottom of the driven side safety clamp lever 31 is fixedly connected to the trigger end of another progressive safety clamp 11. The distance from the working end of the progressive safety clamp 11 to the guide rail 3 is 3±0.5mm. When the active lever 9 is pulled upward, it rotates counterclockwise along the active side hinge 22. At this time, the active side safety clamp lever 23 pulls the progressive safety clamp 11 upward. The wedge-shaped gap of the progressive safety clamp 11 decreases, generating braking force on the guide rail 3 and braking the loading platform 1 onto the guide rail 3. The brake cable 24 also rises upward. The stretching of the brake cable 24 is transmitted to the driven side of the braking device 6. The brake cable 24 will be pulled downward on the driven side. The driven lever 27 rotates clockwise around the driven side hinge 29, driving the driven side safety clamp lever 31 to pull the progressive safety clamp 11 upward. The progressive safety clamp 11 has wedge-shaped blocks, fixing the loading platform 1 onto the right guide rail 3, generating frictional force for final braking. When braking needs to be canceled, the active side electric actuator 20 is extended. This will push the active pull rod 9 to rotate clockwise and reset, causing the active pull rod 9 and the active side safety clamp pull rod 23 to move downwards. At this time, the opening of the progressive safety clamp 11 widens, achieving its reset function and braking to a stop. Simultaneously, the driven side electric push rod 20 is extended, pushing the driven pull rod 27 to rotate counterclockwise along the driven side hinge 29. The driven pull rod 27, along with the driven side safety clamp pull rod 31, moves downwards, resetting the progressive safety clamp 11 and braking to a stop. The loading platform 1 can then move up and down. The loading platform 1 moves along both sides of the column 2. When the error between the loading platform 1 and the guide rail 3 is greater than the gap between the progressive safety clamp 11 and the guide rail 3, the wedge-shaped block of the progressive safety clamp 11 rubs against the guide rail 3, easily generating a friction braking effect, thus braking the loading platform 1 onto the guide rail 3.

[0029] As one implementation method in this embodiment, such as Figure 5 , Figure 6As shown, an upper connecting plate 14 and a lower connecting plate 15 are fixedly installed at the top and bottom of the progressive safety gear 11, respectively. Safety gear guide wheel shafts 12 are fixedly installed on both the upper and lower connecting plates 14 and 15. Safety gear guide wheels 13 are rotatably connected to the outer wall of the safety gear guide wheel shaft 12. Adjusting rods 19 are fixedly connected to the outer walls of both the upper and lower connecting plates 14 and 15. A tension spring 16 is fixedly connected to the middle of the adjusting rod 19. The end of the adjusting rod 19 away from the upper and lower connecting plates 14 and 15 is fixedly connected to the loading platform 1. Limiting rollers 17 and clamping blocks 18 are provided on both the upper and lower connecting plates 14 and 15. A loading platform mounting plate 32 is fixedly installed on the loading platform 1. The limiting rollers 17 and clamping blocks 18 are detachably connected to the loading platform mounting plate 32. The safety gear guide wheels... 13 moves along the guide rail 3. When the side of the column 2 deviates from the guide rail 3, the safety clamp guide wheel 13 drives the upper connecting plate 14, the lower connecting plate 15 and the progressive safety clamp 11 to move left and right. The limiting roller 17 plays a guiding and left and right limiting role. The clamping block 18 can make the upper connecting plate 14 and the lower connecting plate 15 move left and right and has an upper and lower limiting role. The adjusting rod 19 can adjust the tension of the tension spring 16, so that the safety clamp guide wheel 13 can be pressed tightly against the guide rail 3 to generate a clamping force. The safety clamp guide wheel shaft 12 is an eccentric shaft, which can also adjust the gap between the safety clamp guide wheels 13 so that the two safety clamp guide wheels 13 clamp the guide rail 3. This design can compensate for the error between the guide rail 3 and the column 2 that guides the loading platform 1, thereby preventing the progressive safety clamp 11 from being accidentally triggered.

[0030] Working principle: During use, when the loading platform 1 falls too fast, the speed limiter assembly 5 will generate mechanical braking to pull the safety brake wire rope 7. After the safety brake wire rope 7 brakes, when the loading platform 1 continues to descend, the safety brake wire rope 7 will pull the active lever 9 upward through the rope lock connector 8. When the active lever 9 is pulled upward, it rotates counterclockwise along the active side hinge 22. At this time, the active side safety clamp lever 23 pulls the progressive safety clamp 11 upward. The wedge block gap of the progressive safety clamp 11 becomes smaller, generating braking force on the guide rail 3 and pulling the progressive safety clamp 11 upward. When the loading platform 1 is braked on the guide rail 3, the brake cable 24 is also raised upwards. The tension of the brake cable 24 is transmitted to the driven side of the braking device 6. The brake cable 24 will be pulled downwards on the driven side. The driven lever 27 rotates clockwise around the driven side hinge 29, which drives the driven side safety clamp lever 31 to pull the progressive safety clamp 11 upwards. The progressive safety clamp 11 has a wedge block that fixes the loading platform 1 on the right guide rail 3, generating frictional force for final braking. When the braking is canceled, the control electric push rod 20 is extended, which can push the two progressive safety clamps 11 to reset.

[0031] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A stacker safety device characterised by: The utility model provides a kind of safety brake device for truck, including loading platform (1) and column (2), guide rail (3) is fixedly installed on the outer wall of inside of column (2), driven wheel assembly (4) is fixedly installed on the outer wall of column (2) near top, speed limiter assembly (5) is fixedly installed on the outer wall of column (2) near bottom, brake device (6) is provided on the both sides of loading platform (1), the working end of speed limiter assembly (5) is fixedly connected with safety brake wire rope (7), the outer wall of safety brake wire rope (7) is slidably connected with the outer wall of driven wheel assembly (4), the end of safety brake wire rope (7) away from speed limiter assembly (5) is fixedly connected with rope lock connecting piece (8), loading platform (1) side is rotatably connected with loading platform moving wheel (10).

2. A stacker safety device according to claim 1, characterised in that: The brake device (6) includes progressive safety tongs (11), active side hinge seat (21), electric push rod (20), active side hinge (22), driven side hinge seat (30) and driven side hinge (29), the number of the progressive safety tongs (11) is two, two progressive safety tongs (11) are respectively arranged on the both sides of the loading platform (1), the active side hinge seat (21) is fixedly installed on the left side of the loading platform (1), the number of the electric push rod (20) is two, one of the electric push rod (20) is rotatably connected to the inner wall of the active side hinge seat (21), the active side hinge (22) is fixedly installed on the left side of the loading platform (1), the outer wall of the active side hinge (22) is rotatably connected with the active pull rod (9), the end of the rope lock connecting piece (8) away from the safety brake wire rope (7) is detachably connected to the active pull rod (9).

3. A stacker safety device according to claim 2, characterised in that: The telescopic end of one of the electric push rod (20) is slidably connected with the active pull rod (9), the active pull rod (9) is slidably connected with the active side safety tong pull rod (23), the bottom of the active side safety tong pull rod (23) is fixedly connected with the trigger end of one of the progressive safety tongs (11).

4. A stacker safety device according to claim 3, characterised in that: The outer wall of the active pull rod (9) is detachably connected with the brake pull wire (24).

5. A stacker safety device according to claim 4, characterised in that: The driven side hinge seat (30) is fixedly installed on the right side of the loading platform (1), the other electric push rod (20) is rotatably connected to the inner wall of the driven side hinge seat (30), the driven side hinge (29) is rotatably connected to the right side of the loading platform (1), the outer wall of the driven side hinge (29) is rotatably connected with the driven pull rod (27).

6. A stacker safety device according to claim 5, characterised in that: The end of the brake pull wire (24) away from the active pull rod (9) is detachably connected to the end of the driven pull rod (27), the telescopic end of the other electric push rod (20) is slidably connected with the driven pull rod (27), the inner wall of the driven pull rod (27) is slidably connected with the driven side safety tong pull rod (31), the bottom of the driven side safety tong pull rod (31) is fixedly connected with the trigger end of the other progressive safety tongs (11).

7. A stacker safety device according to claim 2, characterised in that: The distance from the working end of the progressive safety tongs (11) to the guide rail (3) is 3±0.5mm.

8. A stacker safety device according to claim 2, characterised in that: The top and bottom of the progressive safety tongs (11) are respectively fixedly installed with an upper connecting plate (14) and a lower connecting plate (15), the upper connecting plate (14) and the lower connecting plate (15) are fixedly installed with a safety tongs guide wheel shaft (12), and the outer wall of the safety tongs guide wheel shaft (12) is rotatably connected with a safety tongs guide wheel (13).

9. A stacker safety device according to claim 8, characterised in that: The outer wall of the upper connecting plate (14) and the lower connecting plate (15) is fixedly connected with an adjusting pull rod (19), the middle of the adjusting pull rod (19) is fixedly connected with a tension spring (16), and the end of the adjusting pull rod (19) away from the upper connecting plate (14) and the lower connecting plate (15) is fixedly connected on the loading platform (1).

10. A stacker safety device according to claim 9, characterised in that: The upper connecting plate (14) and the lower connecting plate (15) are provided with a limiting roller (17) and a clamping block (18), the loading platform (1) is fixedly installed with a loading platform mounting plate (32), and the limiting roller (17) and the clamping block (18) are detachably connected on the loading platform mounting plate (32).

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