Anti-falling device for stacking machine

Abstract

The anti-falling device is arranged on a cargo cage and used for being matched with a speed limiter to limit the stalled cargo cage on a guide rail, the anti-falling device comprises a lifting mechanism and safety tongs capable of clamping the guide rail, the lifting mechanism comprises a swing arm, one end of the swing arm is hinged to the cargo cage and used for swinging up and down around a hinge point, and the other end of the swing arm is hinged to the cargo cage. One end of the swing arm is connected with the safety tongs, the other end of the swing arm is connected with a speed limiter rope, the swing arm is connected with the safety tongs through a flexible connecting piece, and when the cargo cage stalls, the speed limiter rope pulls the swing arm to swing upwards, so that the flexible connecting piece is lifted through the swing arm to trigger the safety tongs to clamp the cargo cage on the guide rail. Compared with a traditional mechanical connecting rod mechanism, the anti-falling device for the stacking machine is simple in structure, low in cost, high in reliability, small in occupied space, light in weight and not high in assembly requirement.

Description

Technical Field

[0001] The utility model relates to the technical field of stackers, in particular to an anti-falling device for stackers. Background Art

[0002] Stackers are important equipment in today's logistics and warehousing industries. The cargo cage of the stacker moves up and down along the guide rail under the action of the lifting mechanism. For safety reasons, a speed limit and anti-fall device is usually installed on the stacker to protect the safety of the goods.

[0003] The existing stacker speed limit and anti-fall device uses a lifting mechanism to connect the speed limiter and the safety clamp. When the speed limiter is triggered, the lifting mechanism acts on the safety clamp, causing the safety clamp to clamp the guide rail to prevent the cargo cage from continuing to fall, thereby protecting the cargo. At present, most lifting mechanisms use a mechanical connecting rod structure, which is installed on the cargo cage and rises and falls with the cargo cage. This existing technical solution has some technical deficiencies:

[0004] 1. The connecting rod mechanism has a complex structure, high manufacturing and processing costs, large size and space occupation, and heavy weight and increased energy consumption.

[0005] 2. The complex structure makes installation difficult and adjustment difficult. If the adjustment is not in place, the lifting failure may occur easily, the safety clamp cannot brake effectively, safety cannot be guaranteed, and the reliability is not high.

[0006] Some practitioners have proposed an anti-fall device, which makes the wedge blocks on both sides of the inlay close to each other and clamp the guide rail of the stacker. When the connecting piece is broken, the speed limiter brakes, so that the connecting rod assembly connected to the connecting piece moves relative to the cargo platform. The connecting rod assembly pulls the wedge block assembly upward through the lifting mechanism, so that the movable wedge blocks on both sides are close to each other and clamp the guide rail. However, the device has a complex structure, occupies a large space, and requires frequent replacement of connecting parts, which is costly. Utility Model Content

[0007] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a falling prevention device for a stacker which has a simple structure, low cost and high reliability.

[0008] In order to solve the above technical problems, the utility model adopts the following technical solutions: a fall prevention device for a stacker, which is arranged on the cargo cage and is used to cooperate with the speed limiter to limit the stalled cargo cage on the guide rail, including a lifting mechanism and a safety clamp that can clamp the guide rail, the lifting mechanism includes a swing arm, one end of the swing arm is hinged to the cargo cage and is used to swing up and down around the hinge point, the other end of the swing arm is connected to the speed limiter rope, the swing arm and the safety clamp are connected by a flexible connecting piece, when the cargo cage stalls, the speed limiter rope pulls the swing arm to swing upward, and is used to lift the flexible connecting piece through the swing arm to trigger the safety clamp to clamp the cargo cage on the guide rail.

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

[0010] The cargo cage is provided with a first mounting seat and a second mounting seat provided below the first mounting seat, the swing arm is hinged to the first mounting seat, and a tensioning assembly is connected between the swing arm and the second mounting seat for keeping the swing arm tensioned downward when the cargo cage is not stalled.

[0011] The second mounting seat is provided with a perforated portion, and the flexible connecting member is movably inserted into the second mounting seat through the perforated portion.

[0012] The tensioning assembly includes a tension spring and an adjusting screw, wherein the adjusting screw is rotatably and vertically mounted on a second mounting seat, the upper end of the tension spring is connected to a swing arm, and the lower end is connected to the adjusting screw for adjusting the tension of the tension spring.

[0013] A third mounting seat is arranged above the safety clamp, a perforated portion is arranged on the third mounting seat, and the flexible connector is movably arranged on the third mounting seat through the perforated portion.

[0014] The perforated portions of the second mounting seat and the third mounting seat are both provided with adjusting screw members for adjusting the tension of the flexible connector.

[0015] A hose is provided between the second mounting seat and the third mounting seat, and the flexible connector slides in the hose.

[0016] The flexible connection member comprises a steel wire rope, and the hose covers the steel wire rope and passes through the cargo cage.

[0017] The safety clamp includes a pull nail arranged at the top for triggering the safety clamp, a protruding pull rod is provided at one end of the flexible connector connected to the safety clamp, a hook portion corresponding to the pull rod is provided at the top of the pull nail, and an opening portion for the flexible connector to pass through is provided on the hook portion.

[0018] Compared with the prior art, the utility model has the following advantages: the utility model discloses a fall prevention device for a stacker, which is provided with a special lifting mechanism and a safety clamp. When the cargo cage loses speed and falls, the speed limiter is triggered, and the speed limiter rope pulls the swing arm. Since the cargo cage continues to fall, the swing arm hinged on the cargo cage is pulled upward, and the swing arm drives the flexible connector to also pull upward. The upward movement of the flexible connector triggers the safety clamp connected to the other end of the flexible connector, so that the safety clamp clamps the guide rail, and the cargo cage stops falling, thereby protecting the cargo. The swing arm and the safety clamp are connected by a flexible connector, and the braking of the safety clamp can be triggered only by rotating the swing arm, thereby preventing the cargo cage from continuing to fall. Compared with the traditional mechanical linkage mechanism, the fall prevention device for the stacker has a simple structure, low cost, strong reliability, small space occupation, light weight, and low assembly requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The utility model is a structural schematic diagram of a fall prevention device for a stacker.

[0020] Figure 2 It is a structural schematic diagram of the lifting mechanism of the utility model.

[0021] Figure 3 for Figure 1 A magnified view of .

[0022] Figure 4 It is a three-dimensional structural schematic diagram of the adjusting screw and the connecting piece of the utility model.

[0023] The numbers in the figure represent: 1. lifting mechanism; 11. swing arm; 12. first mounting seat; 13. second mounting seat; 14. tensioning assembly; 141. tension spring; 142. adjusting screw; 2. guide rail; 3. safety clamp; 31. rivet; 311. hook portion; 312. opening portion; 4. cargo cage; 6. flexible connector; 61. pull rod; 7. third mounting seat; 8. adjusting screw member; 9. hose. DETAILED DESCRIPTION

[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0027] In this application, unless otherwise clearly specified and limited, the terms "assemble", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0028] like Figures 1 to 4 As shown, the anti-falling device for a stacker of this embodiment is arranged on the cargo cage 4 and is used to cooperate with the speed limiter (not shown in the figure) to limit the stalled cargo cage 4 on the guide rail 2. It includes a lifting mechanism 1 and a safety clamp 3 that can clamp the guide rail 2. The lifting mechanism 1 includes a swing arm 11, one end of the swing arm 11 is hinged to the cargo cage 4 and is used to swing up and down around the hinge point, and the other end of the swing arm 11 is connected to the speed limiter rope (as shown in the figure, the hole at the leftmost end of the swing arm 11 is a connecting hole for binding the speed limiter rope), and the swing arm 11 and the safety clamp 3 are connected by a flexible connector 6. When the cargo cage 4 stalls, the speed limiter rope pulls the swing arm 11 to swing upward, and is used to pull the flexible connector 6 through the swing arm 11 to trigger the safety clamp 3 to clamp the cargo cage 4 on the guide rail 2.

[0029] The specific implementation principle is as follows: when the stacker uses an anti-fall device, the cargo cage 4 moves up and down, driving the speed limiter rope to move up and down. When the cargo cage 4 stalls and falls, the speed limiter is triggered, causing the speed limiter rope to stop moving. The speed limiter rope pulls one end of the swing arm 11. Since the cargo cage 4 continues to fall, the swing arm 11 hinged on the cargo cage 4 is pulled upward, and the flexible connector 6 connected to the swing arm 11 moves upward, triggering the safety clamp 3 connected to the other end of the flexible connector 6, so that the safety clamp 3 clamps the guide rail 2, and the cargo cage 4 stops falling.

[0030] The stacker anti-falling device of the utility model is provided with a special lifting mechanism, and the swing arm 11 and the safety clamp 3 are connected by a flexible connector 6. The safety clamp 3 can be braked by rotating the swing arm 11 to prevent the cargo cage from falling further. Compared with the traditional mechanical linkage mechanism, the stacker anti-falling device has a new type of flexible connection and swing start, simple structure, low cost, strong reliability, small space occupation, light weight, and low assembly requirements.

[0031] In this embodiment, a first mounting seat 12 and a second mounting seat 13 disposed below the first mounting seat 12 are provided on the cargo cage 4, the swing arm 11 is hinged to the first mounting seat 12, and a tensioning assembly 14 is connected between the swing arm 11 and the second mounting seat 13, which is used to keep the swing arm 11 tensioned downward when the cargo cage 4 is not stalled. The tensioning assembly 14 always keeps the swing arm 11 in a downward tensioned state when not working, and the swing arm 11 and the cargo cage 4 remain relatively still, so as to prevent the swing arm 11 from lifting upward to trigger the safety clamp 3 to work when the cargo cage 4 moves downward normally, thereby affecting the normal operation of the stacker.

[0032] In this embodiment, a perforated portion is provided on the second mounting seat 13, and the flexible connector 6 is movably installed on the second mounting seat 13 through the perforated portion. The second mounting seat 13 is provided to prevent the flexible connector 6 from being entangled and destroying the power transmission relationship, thereby improving the reliability of the stacker anti-falling device.

[0033] In this embodiment, the tensioning assembly 14 includes a tension spring 141 and an adjusting screw 142. The adjusting screw 142 is rotatably and vertically mounted on the second mounting seat 13. The upper end of the tension spring 141 is connected to the swing arm 11, and the lower end is connected to the adjusting screw 142 for adjusting the tension of the tension spring 141. The tension spring 141 provides a downward tension to the swing arm 11, so that the swing arm 11 remains in a downward tensioned state when the cargo cage 4 moves downward. The tension of the tension spring 141 can be adjusted by moving the adjusting screw 142 up and down, and has wide applicability.

[0034] In this embodiment, a third mounting seat 7 is provided above the safety clamp 3, and a perforated portion is provided on the third mounting seat 7, through which the flexible connector 6 is movably inserted through the third mounting seat 7. By providing the third mounting seat 7, the flexible connector 6 is connected through the top of the safety clamp 3, so as to avoid the flexible connector 6 from being entangled and affecting the power transmission.

[0035] In this embodiment, the perforated parts of the second mounting seat 13 and the third mounting seat 7 are both provided with adjusting screw members 8 for adjusting the tension of the flexible connector 6. By adjusting the screw member 8 to fine-tune the flexible connector 6 up and down, on the one hand, it is prevented that the flexible connector 6 between the swing arm 11 and the safety clamp 3 is too long, which affects the response transmission speed. On the other hand, it is prevented that the flexible connector 6 between the swing arm 11 and the safety clamp 3 is not long enough. When the swing arm 11 is pulled upward, the speed of the cargo cage 4 is too fast, the flexible connector 6 is broken, and the safety clamp 3 cannot be braked.

[0036] In this embodiment, a hose 9 is provided between the second mounting seat 13 and the third mounting seat 7, and the flexible connector 6 slides in the hose 9. The hose 9 fixes and limits the flexible connector 6 to prevent the flexible connector 6 from being entangled and knotted.

[0037] In this embodiment, the flexible connector 6 includes a steel wire rope, and the hose 9 covers the steel wire rope and passes through the cargo cage 4, thereby further saving space.

[0038] In this embodiment, the safety clamp 3 includes a rivet 31 disposed at the top for triggering the safety clamp 3, a protruding pull rod 61 is disposed at one end of the flexible connector 6 connected to the safety clamp 3, a hook portion 311 corresponding to the pull rod 61 is disposed at the top of the rivet 31, and an opening portion 312 for the flexible connector 6 to pass through is disposed on the hook portion 311. The rivet 31 has a simple structure and is easy to use. The pull rod 61 and the hook portion 311 are clamped together, so that the flexible connector 6 and the brake member 31 are quickly connected, and installation, maintenance and disassembly are quick and convenient.

[0039] Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with the art can use the above disclosed technical content to make many possible changes and modifications to the technical solution of the present invention without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A fall prevention device for a stacker, arranged on a cargo cage (4) and used to cooperate with a speed limiter to limit the stalled cargo cage (4) on a guide rail (2), characterized in that: The invention comprises a lifting mechanism (1) and a safety clamp (3) capable of clamping a guide rail (2), wherein the lifting mechanism (1) comprises a swing arm (11), one end of the swing arm (11) being hinged to a cargo cage (4) and being used for swinging up and down around a hinge point, the other end of the swing arm (11) being connected to a speed limiter rope, the swing arm (11) and the safety clamp (3) being connected via a flexible connecting member (6), and when the cargo cage (4) stalls, the speed limiter rope pulls the swing arm (11) to swing upward, and is used for lifting the flexible connecting member (6) via the swing arm (11) to trigger the safety clamp (3) to clamp the cargo cage (4) onto the guide rail (2).

2. The anti-falling device for stacker according to claim 1, characterized in that: The cargo cage (4) is provided with a first mounting seat (12) and a second mounting seat (13) provided below the first mounting seat (12); the swing arm (11) is hingedly connected to the first mounting seat (12); a tensioning assembly (14) is connected between the swing arm (11) and the second mounting seat (13) for keeping the swing arm (11) tensioned downward when the cargo cage (4) is not stalled.

3. The anti-falling device for stacker according to claim 2, characterized in that: The second mounting seat (13) is provided with a perforated portion, and the flexible connecting member (6) is movably inserted into the second mounting seat (13) through the perforated portion.

4. The anti-falling device for stacker according to claim 2, characterized in that: The tensioning assembly (14) comprises a tension spring (141) and an adjusting screw (142); the adjusting screw (142) is rotatably and vertically mounted on a second mounting seat (13); the upper end of the tension spring (141) is connected to the swing arm (11), and the lower end is connected to the adjusting screw (142) for adjusting the tension of the tension spring (141).

5. The anti-falling device for stacker according to claim 3, characterized in that: A third mounting seat (7) is provided above the safety clamp (3), a perforated portion is provided on the third mounting seat (7), and the flexible connecting member (6) is movably mounted on the third mounting seat (7) through the perforated portion.

6. The anti-falling device for stacker according to claim 5, characterized in that: The second mounting seat (13) and the third mounting seat (7) are both provided at the perforated portions with adjustment screw members (8) for adjusting the tension of the flexible connecting member (6).

7. The anti-falling device for stacker according to claim 5, characterized in that: A hose (9) is provided between the second mounting seat (13) and the third mounting seat (7), and the flexible connecting member (6) slides in the hose (9).

8. The anti-falling device for stacker according to claim 7, characterized in that: The flexible connection member (6) comprises a steel wire rope, and the hose (9) covers the steel wire rope and passes through the cargo cage (4).

9. The anti-falling device for a stacker according to any one of claims 1 to 8, characterized in that: The safety clamp (3) comprises a pull pin (31) arranged at the top for triggering the safety clamp (3); one end of the flexible connector (6) connected to the safety clamp (3) is provided with a protruding pull rod (61); the top end of the pull pin (31) is provided with a hook portion (311) corresponding to the pull rod (61); and the hook portion (311) is provided with an opening portion (312) for the flexible connector (6) to pass through.

Images