A protective device to prevent pull-cord switch from being hit and malfunctioning

Abstract

The utility model belongs to the field of belt conveyor transmission technology, and specifically relates to a protective device to prevent a pull-rope switch from being hit and malfunctioning, comprising: a shell, with openings at both ends of the front and rear, and symmetrical guide grooves on both side walls; the opening of the guide groove faces the rear end of the shell; a block, with pull ropes at both ends of the front and rear, and the rear end of the block is connected to the pull-rope switch through the pull rope; symmetrical guide columns are provided at one end of the two side walls of the block close to the pull-rope switch, and the guide columns are located in the guide grooves at corresponding positions; a limit horizontal bar is located at the front end opening of the shell, and its two ends are fixed to the two side walls of the shell by bolts. The utility model can prevent the pull wire from being hit when materials are scattered on both sides of the belt conveyor, causing the switch to malfunction, and has a good market application prospect.

Description

Technical Field

[0001] The utility model belongs to the technical field of belt conveyor transmission, and in particular relates to a protective device for preventing a pull-rope switch from being smashed and malfunctioning. Background Art

[0002] Belt conveyors, also known as belt conveyors, are economical logistics conveying equipment that are indispensable for rhythmic assembly lines. They are widely used in various industries such as home appliances, electronics, electrical appliances, machinery, tobacco, injection molding, post and telecommunications, printing, and food for assembly, testing, debugging, packaging, and transportation of objects. Belt conveyors use the continuous or intermittent movement of conveyor belts to transport powdery and granular items. They run at high speed, smoothly, with low noise, and can be transported up and down slopes.

[0003] The pull-wire switch of the belt conveyor is installed on both sides of the belt conveyor. In an emergency, it can be manually pulled to stop the operation of the belt conveyor. However, when materials are scattered on both sides of the belt conveyor, the pull wire may be hit, causing the switch to malfunction. To this end, the present application provides a protective device to prevent the pull-wire switch from being hit and malfunctioning.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0005] The utility model aims to provide a protective device for preventing a pull-wire switch from being hit and malfunctioning, so as to solve the problem that when materials are scattered on both sides of a belt conveyor, the pull wire may be hit and the switch may malfunction.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A protective device for preventing a pull-cord switch from being hit and malfunctioning, comprising:

[0008] The housing has openings at both ends, and symmetrical guide grooves are formed on both side walls; the openings of the guide grooves face the rear end of the housing;

[0009] The block has pull ropes at both ends, and the rear end is connected to the pull rope switch through the pull rope; symmetrical guide columns are provided at one end of the two side walls of the block close to the pull rope switch, and the guide columns are located in the guide grooves at corresponding positions;

[0010] The limiting horizontal bar is located at the front opening of the shell, and its two ends are fixed to the two side walls of the shell by bolts.

[0011] Preferably, a C-shaped clamping plate is provided at the bottom of the shell, and a screw rod which is threadedly matched with the clamping plate is provided on the bottom plate of the clamping plate; a circular abutment plate is provided on the top of the screw rod and a rotating plate is provided on the bottom.

[0012] Preferably, two symmetrical limiting grooves are provided on both side walls of the shell, and the openings of the limiting grooves face the front end of the shell; and both ends of the limiting horizontal bar respectively pass through the limiting grooves at corresponding positions.

[0013] Preferably, the middle portion of the limit horizontal bar is bent downward to form an avoidance groove; the avoidance groove corresponds to the position of the pull rope and is located below the pull rope.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] (1) The utility model provides a protective device for preventing a pull-rope switch from being hit and malfunctioning. When the pull-rope switch is pulled normally to make the pull rope straight, the stopper does not contact the limit bar and can pass normally. The pull-rope switch is actuated, and the belt conveyor can be stopped smoothly.

[0016] (2) The protective device of the utility model for preventing the pull-cord switch from malfunctioning due to being hit, when the pull-cord is hit by a foreign object, the block is pulled downward and blocked by the limit bar and cannot pass through. At this time, the pull-cord switch is not affected, thereby preventing the switch from malfunctioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an external schematic diagram of the utility model;

[0018] Figure 2 It is a side schematic diagram of the utility model;

[0019] Figure 3 yes Figure 2 A schematic diagram of the interior of the middle shell;

[0020] Description of main reference numerals:

[0021] 1. Shell; 2. Guide groove; 3. Stopper; 4. Pull rope; 5. Pull rope switch; 6. Guide column; 7. Limiting bar; 8. Bolt; 9. Clamping plate; 10. Screw; 11. Abutment plate; 12. Rotating plate; 13. Limiting groove; 14. Avoidance groove. DETAILED DESCRIPTION

[0022] The following is a clear and complete description of the technical solution of the utility model patent. Obviously, the described embodiments are part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 cannot be understood as a limitation on the utility model.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 it can be indirectly connected through an intermediate medium, or it can be a connection between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] See attached Figure 1-3 , a protection device to prevent a pull-cord switch from being hit and malfunctioning, comprising:

[0026] The shell 1 is a hollow square tube, with openings at both ends, and symmetrical guide grooves 2 on both side walls; the opening of the guide grooves 2 faces the rear end of the shell 1;

[0027] The block 3 is a solid square iron block, with pull ropes 4 at both ends, and the rear end is connected to the pull rope switch 5 through the pull rope 4; symmetrical guide columns 6 are provided at one end of the two side walls of the block 3 close to the pull rope switch 5, and the guide columns 6 are located in the guide grooves 2 at corresponding positions;

[0028] The limiting horizontal bar 7 is located at the front opening of the housing 1 , and its two ends are fixed to the two side walls of the housing 1 by bolts 8 .

[0029] In this embodiment, a C-shaped clamping plate 9 is provided at the bottom of the housing 1, and a screw 10 is provided on the bottom plate of the clamping plate 9 to match the thread thereof; a circular abutment plate 11 is provided on the top of the screw 10, and a rotating plate 12 is provided on the bottom. In actual use, the housing 1 needs to be fixed on a mounting frame close to the belt conveyor, and the screw 10 can be moved up and down by rotating the rotating plate 12, so that the abutment plate 11 can be matched with the top plate of the clamping plate 9 and clamped and fixed on the mounting frame.

[0030] In addition, two symmetrical limit grooves 13 are provided on the two side walls of the shell 1, and the openings of the limit grooves 13 face the front end of the shell 1; the two ends of the limit bar 7 respectively pass through the limit grooves 13 at the corresponding positions, and the bolts 8 can be loosened to make the two ends of the limit bar 7 slide in the limit grooves 13, so as to facilitate the adjustment of the position of the limit bar 7 to adapt to the downward movement position of the stop block 3, thereby preventing the stop block 3 from being pulled out of the shell 1 when the pull rope 4 is hit by the material, thereby avoiding malfunction of the pull rope switch 5.

[0031] It should be noted that the middle part of the limit horizontal bar 7 is bent downward to form an avoidance groove 14; the avoidance groove 14 corresponds to the position of the pull rope 4 and is located below the pull rope 4. When the pull rope 4 is hit by the material and bent downward, it can enter the avoidance groove 14 to avoid direct contact with the limit horizontal bar 7, which can reduce the friction loss of the pull rope 4.

[0032] The protective device for preventing the pull-cord switch from being hit and malfunctioning is installed on the pull cord 4 connected to the switch. When the pull cord 4 is hit and pulled, the pull cord 4 is pulled downward. At this time, the limit bar 7 will clamp the pull cord 4 to prevent the pull-cord switch 5 from malfunctioning. The protective device is very practical and has good market application prospects.

[0033] The foregoing description of specific exemplary embodiments of the utility model is for the purpose of illustration and illustration. These descriptions are not intended to limit the utility model to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the utility model and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the utility model and various different options and changes. The scope of the utility model is intended to be defined by the claims and their equivalents.

Claims

1. A protective device for preventing a pull-cord switch from being hit and malfunctioning, characterized in that: include: The housing has openings at both ends, and symmetrical guide grooves are formed on both side walls; the openings of the guide grooves face the rear end of the housing; The block has pull ropes at both ends, and the rear end is connected to the pull rope switch through the pull rope; symmetrical guide columns are provided at one end of the two side walls of the block close to the pull rope switch, and the guide columns are located in the guide grooves at corresponding positions; The limiting horizontal bar is located at the front opening of the shell, and its two ends are fixed to the two side walls of the shell by bolts.

2. The protection device for preventing the pull-cord switch from being smashed and malfunctioning according to claim 1, characterized in that: A C-shaped clamping plate is provided at the bottom of the shell, and a screw rod matched with the thread thereof is provided on the bottom plate of the clamping plate; a circular abutting plate is provided at the top of the screw rod, and a rotating plate is provided at the bottom.

3. The protection device for preventing the pull-cord switch from being smashed and malfunctioning according to claim 1, characterized in that: Two symmetrical limiting grooves are also provided on the two side walls of the shell, and the openings of the limiting grooves face the front end of the shell; and the two ends of the limiting horizontal bar respectively pass through the limiting grooves at corresponding positions.

4. The protection device for preventing the pull-cord switch from being smashed and malfunctioning according to claim 1, characterized in that: The middle part of the limit horizontal bar is bent downward to form an avoidance groove; the avoidance groove corresponds to the position of the pull rope and is located below the pull rope.

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