Safety valve mechanism

Abstract

The utility model provides a safety valve mechanism which comprises a fixing plate. The fixing plate is of a strip-shaped frame structure, the limiting pin is inserted into the fixing plate, the cam drive is installed at the position, located at the inner end of the limiting pin, in the fixing plate, the limiting pin abuts against the cam drive, the rotating handle is installed outside the fixing plate, and the rotating handle coaxially drives the cam drive. The fixing plate is installed on the multi-penetrating goods shelf and right faces the front end of the layer-changing elevator, the limiting pin right faces the layer-changing elevator, and the rear end face of the layer-changing elevator is provided with a shifting rod capable of shifting the rotating handle. According to the utility model, a pure mechanical motion principle is adopted, the use cost can be reduced, the structural size can be changed according to the use precision requirement, the operation stability and safety are far better than those of an electric control structure taking a servo motor as a core, the use is convenient, and the operation is simple.

Description

Technical Field

[0001] The utility model relates to a safety valve mechanism, belonging to the technical field of logistics equipment. Background Art

[0002] At present, with the continuous development of logistics equipment, multi-pass warehouses have gradually become an indispensable product in the logistics industry. With the continuous iteration and upgrading of multi-pass warehouse shelves, the designed warehouse area is getting higher and higher, and the processing accuracy, installation requirements and design costs between various equipment are also gradually increasing. In the prior art, the safety valve mechanism on the multi-pass warehouse trolley layer-changing elevator generally adopts an electric control structure with a servo motor as the core, which generally has the problems of poor docking, high design cost and high maintenance difficulty. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a safety valve mechanism, which adopts a pure mechanical movement principle, which can not only reduce the use cost, but also change the structure size according to the use accuracy requirements.

[0004] The utility model is realized through the following technical solutions.

[0005] The utility model provides a safety valve mechanism, comprising a fixed plate; the fixed plate is a strip frame structure, a limit pin is inserted and installed in the fixed plate, a cam drive is installed at the inner end position of the limit pin in the fixed plate and the limit pin is pressed against the cam drive, a rotating handle is installed outside the fixed plate, and the rotating handle coaxially drives the cam drive; the fixed plate is installed on the multi-pass shelf at the front end position facing the layer-changing elevator, the limit pin faces the layer-changing elevator, and a lever is provided on the rear end face of the layer-changing elevator to move the rotating handle; the lever is fixed at the positions on both sides of the inner end of the car of the layer-changing elevator; one fixed plate is installed on the left and right end faces of the multi-pass shelf.

[0006] The rotating handle and the cam are driven and installed on the main shaft, and the main shaft is a square shaft.

[0007] The fixing plate is provided with a connecting seat at the position where the limiting pin passes through for guiding and protection.

[0008] The limit pin is sleeved with a return spring, which is located inside the fixing plate and is used for returning the limit pin.

[0009] The inner end of the limit pin is connected and fixed with a transmission plate, and the cam is driven by the transmission plate.

[0010] The return spring is installed in the connecting seat.

[0011] The installation position of the rotating handle on the main shaft is such that when the limit pin is in the state of being driven out by the cam, the rotating handle is in a state where it can be toggled forward, and when the fixing plate is in the contracted state without being pushed out, the rotating handle is in an inclined state where it cannot be toggled.

[0012] The beneficial effects of the present utility model are as follows: By adopting the principle of pure mechanical motion, it can not only reduce the usage cost, but also change the structural dimensions according to the requirements of usage accuracy. Moreover, the running stability and safety are far better than those of the electric control structure with a servo motor as the core, and it is convenient to use and simple to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic diagram of the installation structure of at least one embodiment of the present utility model;

[0014] Figure 2 is Figure 1 a schematic diagram of the structure at the docking position of the layer-changing elevator in

[0015] Figure 3 is a schematic diagram of the structure of at least one embodiment of the present utility model;

[0016] Figure 4 is Figure 3 the schematic diagram of the internal structure of

[0017] Figure 5 is Figure 3 a schematic diagram of the structure of the rotating handle in another working state in

[0018] In the figure: 1 - multi-pier shelf, 2 - multi-pier vehicle, 3 - layer-changing elevator, 4 - safety shutter mechanism, 301 - car, 302 - lever, 401 - rotating handle, 402 - fixing plate, 403 - limit pin, 404 - connecting seat, 405 - main shaft, 406 - cam drive, 407 - transmission plate, 408 - return spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The technical solutions of the present utility model will be further described below, but the scope of protection is not limited thereto.

[0020] The first embodiment of the present utility model relates to as Figures 1 to 5A safety valve mechanism shown includes a fixing plate 402; the fixing plate 402 is in a strip-shaped frame structure, a limit pin 403 is inserted and installed on the fixing plate 402, a cam drive 406 is installed at the inner end position of the limit pin 403 inside the fixing plate 402 and the limit pin 403 abuts against the cam drive 406, a rotating handle 401 is installed outside the fixing plate 402, and the rotating handle 401 drives the cam drive 406 coaxially; the fixing plate 402 is installed on the multi-pier shelf 1 at the front position facing the layer-changing elevator 3, the limit pin 403 faces the layer-changing elevator 3, and a dial rod 302 on the rear end face of the layer-changing elevator 3 can dial the rotating handle 401; the dial rod 302 is fixed at both sides of the inner end of the car 301 of the layer-changing elevator 3; one fixing plate 402 is installed on each of the left and right ends of the multi-pier shelf 1 end face.

[0021] The second embodiment of the present utility model is substantially the same as the first embodiment. The main difference is that the rotating handle 401 and the cam drive 406 are installed on a main shaft 405, and the main shaft 405 is a square shaft.

[0022] Furthermore, a connecting seat 404 is provided at the position where the limit pin 403 passes through the fixing plate 402 for guiding and protecting.

[0023] Furthermore, a return spring 408 is sleeved on the limit pin 403, and the return spring 408 is located inside the fixing plate 402 for resetting the limit pin 403.

[0024] Furthermore, a transmission plate 407 is fixedly connected to the inner end of the limit pin 403, and the cam drive 406 is abutted by the transmission plate 407.

[0025] Furthermore, the return spring 408 is installed in the connecting seat 404.

[0026] The third embodiment of the present utility model is substantially the same as the first embodiment. The main difference is that the installation position of the rotating handle 401 on the main shaft 405 satisfies: when the limit pin 403 is in the state of being pushed out by the cam drive 406, the rotating handle 401 is in the state of being forwardly dialable, and when the fixing plate 402 is in the contracted state of not being pushed out, the rotating handle 401 is in the inclined state of not being dialable.

[0027] In the fourth embodiment of the present utility model, in combination with the above embodiments, the fixing plate 402 serves as the main body to fix the transmission plate 402 and the cam drive 406 inside. The rotating handle 401 is connected to the main shaft 405, and the main shaft 405 penetrates through the cam drive 406. As the rotating handle 401 rotates to drive the main shaft 405 to rotate, the cam drive 406 also rotates accordingly. The cam drive 406 drives the transmission plate 407 to move backward through rotation, and the transmission plate 407 pulls the limit pin 403 to move backward together. The spring 408 enables the limit pin 403 to move forward for reset. In terms of actual installation and use, the safety valve mechanism 4 is fixed on the multi-level shelf 1 by bolts, and there is one safety valve mechanism 4 on each side of each layer of the shelf. After the layer-changing elevator 3 moves up and down, the lever 302 will rotate the rotating handle 401, and it can stably open the limit pin after the layer-changing elevator 3 reaches the specified layer, so that the multi-level vehicle 2 can enter the car 301 of the layer-changing elevator 3.

Claims

1. A safety valve mechanism, comprising a fixing plate (402), characterized in that: The fixed plate (402) is in a strip-shaped frame structure. A limit pin (403) is inserted and installed on the fixed plate (402). A cam drive (406) is installed inside the fixed plate (402) at the inner end position of the limit pin (403), and the limit pin (403) abuts against the cam drive (406). A rotary handle (401) is installed outside the fixed plate (402), and the rotary handle (401) drives the cam drive (406) coaxially; the fixed plate (402) is installed on the multi-pier shelf (1) at the front end position facing the layer-changing elevator (3). The limit pin (403) faces the layer-changing elevator (3), and there is a lever (302) on the rear end face of the layer-changing elevator (3) that can toggle the rotary handle (401); the lever (302) is fixed at both sides of the inner end of the car (301) of the layer-changing elevator (3); one fixed plate (402) is installed on each of the left and right sides of the end face of the multi-pier shelf (1).

2. The safety valve mechanism according to claim 1, characterized in that: The rotary handle (401) and the cam drive (406) are installed on the main shaft (405), and the main shaft (405) is a square shaft.

3. The safety valve mechanism according to claim 1, characterized in that: A connecting seat (404) is provided at the position where the limit pin (403) passes through the fixed plate (402) for guiding and protecting.

4. The safety valve mechanism according to claim 1, characterized in that: A return spring (408) is sleeved on the limit pin (403), and the return spring (408) is located inside the fixed plate (402) for resetting the limit pin (403).

5. The safety valve mechanism according to claim 1, wherein: The inner end of the limit pin (403) is connected and fixed with a transmission plate (407), and the cam drive (406) is abutted through the transmission plate (407).

6. The safety valve mechanism according to claim 4, characterized in that: The return spring (408) is installed in the connecting seat (404).

7. The safety valve mechanism according to claim 1, characterized in that: The installation position of the rotary handle (401) on the main shaft (405) satisfies that when the limit pin (403) is in the state of being pushed out by the cam drive (406), the rotary handle (401) is in a state of being toggleable forward, and when the fixed plate (402) is in a contracted state of not being pushed out, the rotary handle (401) is in an inclined state of not being toggleable.

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