Coal conveying belt pull rope protection switch device

Abstract

The utility model provides a coal conveying belt pull rope protection switch device, which mainly relates to the technical field of protection switches, and comprises a switch body, four corners of the top surface of the switch body are respectively provided with a mounting hole, the middle part of the switch body close to one end is provided with a reset knob, and a microswitch is arranged in the switch body; a pull rod is movably installed at the bottom of the switch body, a rope penetrating groove is formed in the end, away from the switch body, of the pull rod, an opening is formed in the upper portion of one side of the rope penetrating groove, and the pull rod is sleeved with a movable limiting assembly. The device has the advantages that when the device is used, a traction rope can be directly hung in the rope penetrating groove in the bottom of the pull rod through the opening, and after the traction rope is installed, the opening can be blocked through the limiting assembly so that the traction rope can be prevented from falling off in the rope penetrating groove in the using process. The device facilitates rapid installation and disassembly of the traction rope, can greatly improve the maintenance efficiency in use, and is convenient to use.

Description

Technical Field

[0001] This application relates to the field of protection switch technology, specifically a protective switch device for coal conveyor belt pull ropes. Background Technology

[0002] In existing technologies, belt conveyors often cannot be stopped in time when an emergency occurs in steel, cement, power plant, mining and other scenarios, which can easily lead to major safety accidents.

[0003] A pull-cord switch, commonly known as an "emergency stop switch," is used to stop a conveyor when it needs to be shut down. The pull-cord switch consists of a pull rod, a reset handle, a cam, a locking groove, and a micro switch. It is installed on both sides of the conveyor frame, connected by a steel wire rope along both sides of the conveyor. In the event of an emergency, pulling the steel wire rope at any point along the conveyor line moves the pull rod, which in turn drives a torsion spring via a drive shaft. This displacement of the precision cam triggers the micro switch, cutting off the control circuit and stopping the conveyor.

[0004] However, existing pull-rope safety switches typically have a pull ring fixed to the end of the pull rod for securing the traction rope. Installing the traction rope requires passing it through the pull ring and then securing the end with rivets, clamps, or other fastening devices, making the process rather complex. Furthermore, disassembling the traction rope is complicated when repairing or replacing the switch, preventing quick removal from the pull rod and causing inconvenience. Summary of the Invention

[0005] To address the aforementioned issues, the coal conveyor belt pull rope protection switch device provided in this application facilitates the quick installation and removal of the pull rope, greatly improving maintenance efficiency and ease of use.

[0006] To achieve the objectives of this application, the following technical solution is provided:

[0007] A protective switch device for a coal conveyor belt pull rope includes a switch body, with mounting holes at the four corners of the top surface of the switch body, a reset knob at the center near one end of the switch body, and a micro switch inside the switch body.

[0008] A pull rod is movably mounted on the bottom of the switch body. A rope-threading groove is provided inside the end of the pull rod away from the switch body. An opening is provided on the upper part of one side of the rope-threading groove. A movable limiting component is fitted on the outside of the pull rod.

[0009] In one possible implementation, the limiting component includes a sleeve that is movably fitted onto the outside of the pull rod, the lower part of the sleeve being able to cover the opening, and the sleeve being connected to the pull rod via an elastic reset component.

[0010] In one possible implementation, the outer periphery of the pull rod is provided with an annular groove, and vertically arranged sliding grooves are respectively provided on both sides of the annular groove. Slider blocks are respectively fixedly installed on both sides of the inner wall of the sleeve.

[0011] In one possible implementation, the two sliders are inserted into corresponding grooves and slide in cooperation with them.

[0012] In one possible implementation, the resilient reset assembly includes a reset spring, with the pull rod externally fitted with the reset spring located within an annular groove.

[0013] In one possible implementation, one end of the return spring is fixedly connected to the top of the annular groove, and the other end of the return spring is fixedly connected to one of the sliders.

[0014] In one possible implementation, the sleeve has openings at both ends, with the upper opening being the same size as the diameter of the pull rod after the annular groove is formed, and the lower opening being the same size as the outer diameter of the rope-threading groove.

[0015] In one possible implementation, the opening extends longitudinally through the rope-threading groove.

[0016] Compared with the existing technology, the beneficial effects of this utility model are:

[0017] In use, the traction rope can be suspended directly into the rope groove at the bottom of the pull rod through the opening. After the traction rope is installed, the opening can be sealed by the limiting component to prevent the traction rope from falling out of the rope groove during use. This device facilitates quick installation and removal of the traction rope, greatly improving maintenance efficiency and ease of use. Attached Figure Description

[0018] The accompanying drawings are provided to further understand this application and form part of the specification. They are used together with the embodiments of this application to explain this application and do not constitute a limitation thereof.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 yes Figure 1 Enlarged view of part I;

[0021] In the diagram: 1. Switch body; 2. Mounting hole; 3. Reset knob; 4. Pull rod; 5. Rope groove; 6. Opening; 7. Sleeve; 8. Reset spring; 9. Annular groove; 10. Slide groove; 11. Slider. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of this application, unless otherwise stated, "multiple" means two or more.

[0024] Example 1

[0025] Figure 1-2 The coal conveyor belt pull rope protection switch device provided in the embodiment of this application includes a switch body 1. The four corners of the top surface of the switch body 1 are respectively provided with mounting holes 2. The middle part of the switch body 1 near one end is provided with a reset knob 3. The switch body 1 is provided with a micro switch.

[0026] A pull rod 4 is movably installed at the bottom of the switch body 1. A rope groove 5 is provided inside the end of the pull rod 4 away from the switch body 1. An opening 6 is provided at the upper part of one side of the rope groove 5. The opening 6 extends longitudinally through the rope groove 5.

[0027] The pull rod 4 is externally fitted with a movable limiting component;

[0028] Specifically, by moving the limiting component, the opening 6 can be exposed to the outside. When installing the traction rope, the traction rope can be directly passed through the opening 6 and suspended in the rope groove 5, thereby achieving quick installation of the traction rope and making it convenient for users to use.

[0029] In one possible implementation, the limiting component includes a sleeve 7, which is movably fitted onto the outside of the pull rod 4. The lower part of the sleeve 7 can block the opening 6, and the sleeve 7 is connected to the pull rod 4 through an elastic reset component.

[0030] Specifically, the elastic reset component can apply downward pressure to the sleeve 7, so that the sleeve 7 can remain at the lower part of the pull rod 4 when no other external force is applied, thereby blocking the opening 6 through the sleeve 7 and preventing the traction rope suspended in the rope groove 5 from falling off, thereby improving the reliability of the device.

[0031] Specifically, by moving the sleeve 7 upward to expose the opening 6 to the outside, the traction rope can be taken out from the rope groove 5 through the opening 6, thereby achieving quick disassembly of the traction rope for convenient use.

[0032] In one possible implementation, an annular groove 9 is provided on the outer periphery of the pull rod 4, and vertically arranged sliding grooves 10 are provided on both sides of the annular groove 9. Slider blocks 11 are fixedly installed on both sides of the inner wall of the sleeve 7, and the two sliders 11 are inserted into the corresponding sliding grooves 10 and slide in cooperation with them.

[0033] In one possible implementation, the elastic reset assembly includes a reset spring 8, with the pull rod 4 externally fitted with the reset spring 8 located within an annular groove 9. One end of the reset spring 8 is fixedly connected to the top of the annular groove 9, and the other end is fixedly connected to one of the sliders 11.

[0034] In one possible implementation, the sleeve 7 has openings at both ends, the upper opening being the same size as the diameter of the pull rod 4 after the annular groove 9 is formed, and the lower opening being the same size as the outer diameter of the rope groove 5.

[0035] The working principle of this utility model is as follows:

[0036] When this device is in use, the return spring 8 can press the slider 11, so that the slider 11 can exert a corresponding limiting effect on the sleeve 7 connected to it, thereby enabling the sleeve 7 to block the opening 6 during use. Furthermore, the slider 11 and the slide groove 10 cooperate with each other to improve the stability of the sleeve 7 when it moves up and down.

[0037] When it is necessary to expose opening 6, opening 6 can be opened by moving sleeve 7 upward. When sleeve 7 moves upward, the return spring 8 can be compressed by the slider 11 connected to it. When sleeve 7 is released, under the action of the spring force of return spring 8, return spring 8 can push sleeve 7 downward through slider 11 to reset. This device has a simple structure and is easy to use.

[0038] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit it. This application is not limited to the exact structures described above and illustrated in the accompanying drawings, and it should not be considered that the specific implementation of this application is limited to these descriptions. For those skilled in the art, various changes and modifications made without departing from the concept of this application should be considered to fall within the protection scope of this application.

Claims

1. A protective switch device for the pull rope of a coal conveyor belt, characterized in that, Includes a switch body (1), with mounting holes (2) at the four corners of the top surface of the switch body (1), a reset knob (3) at the center near one end of the switch body (1), and a micro switch inside the switch body (1); A pull rod (4) is movably installed at the bottom of the switch body (1). A rope groove (5) is provided inside the end of the pull rod (4) away from the switch body (1). An opening (6) is provided on the upper part of one side of the rope groove (5). A movable limiting component is fitted on the outside of the pull rod (4).

2. The coal conveyor belt pull rope protection switch device according to claim 1, characterized in that, The limiting component includes a sleeve (7), which is movably fitted onto the outside of the pull rod (4). The lower part of the sleeve (7) can cover the opening (6), and the sleeve (7) is connected to the pull rod (4) through an elastic reset component.

3. The coal conveyor belt pull rope protection switch device according to claim 2, characterized in that, The outer periphery of the pull rod (4) is provided with an annular groove (9), and vertically arranged sliding grooves (10) are provided on both sides of the annular groove (9). Slider blocks (11) are fixedly installed on both sides of the inner wall of the sleeve (7).

4. The coal conveyor belt pull rope protection switch device according to claim 3, characterized in that, The two sliders (11) are inserted into the corresponding grooves (10) and slide in cooperation with them.

5. The coal conveyor belt pull rope protection switch device according to claim 2, characterized in that, The elastic reset assembly includes a reset spring (8), and the pull rod (4) is fitted with a reset spring (8) located in an annular groove (9).

6. The coal conveyor belt pull rope protection switch device according to claim 5, characterized in that, One end of the reset spring (8) is fixedly connected to the top of the annular groove (9), and the other end of the reset spring (8) is fixedly connected to one of the sliders (11).

7. The coal conveyor belt pull rope protection switch device according to claim 2, characterized in that, The sleeve (7) has openings at both ends. The size of the upper opening is the same as the diameter of the pull rod (4) after the annular groove (9) is opened, and the size of the lower opening is the same as the outer diameter of the rope groove (5).

8. The coal conveyor belt pull rope protection switch device according to claim 1, characterized in that, The opening (6) extends longitudinally through the rope-threading groove (5).

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