Precise vehicle entering and exiting mechanism of mining electric reversing combination switch

Abstract

An accurate vehicle entering and exiting mechanism of a mining electric reversing combination switch comprises a guide rail frame, T-shaped grooves are formed in the two side walls of an inner cavity of the guide rail frame, a chassis vehicle is arranged in the middle of the guide rail frame, guide wheels are installed on the two sides of the chassis vehicle, and the guide wheels are embedded into the T-shaped grooves and movably matched with the T-shaped grooves; a lead screw nut is installed in the middle of the chassis truck, the middle of the lead screw nut is connected with a lead screw through threads, and the front end of the lead screw penetrates through a front panel of the high-voltage vacuum electromagnetic starter and is fixedly connected with a crank. A connecting support is fixedly connected to the lower portion of the chassis vehicle and connected with the drawer module. Drawer guide rails are fixedly installed on the lower surface of an inner cavity of the high-voltage vacuum electromagnetic starter, and moving wheels are installed at the lower end of the drawer module and movably connected to the drawer guide rails. According to the utility model, the defects in the prior art are overcome, the stable and accurate movement of the drawer module can be effectively ensured, and the drawer module can be accurately butted with the moving contact in the inner cavity of the high-voltage vacuum electromagnetic starter.

Description

A precision entry and exit mechanism for mine electric reversing combination switches Technical Field

[0001] This utility model relates to the field of vacuum electromagnetic starter technology, specifically to a precise entry and exit mechanism for a mining electric reversing combination switch. Background Technology

[0002] The explosion-proof and intrinsically safe multi-circuit high-voltage vacuum electromagnetic starter for mining is a commonly used explosion-proof combination switch in mines. It is mainly used to control and protect motors. Vacuum magnetic starters are an important electrical device in the mining industry.

[0003] The drawer module of the existing high-voltage vacuum electromagnetic starter has the following problems in its vehicle entry and exit mechanism: (1) complex structure and inconvenient operation; (2) low centering accuracy, which makes it difficult to insert the moving contact. Even if it is inserted, the insertion and extraction force is very large, which seriously affects the service life; (3) quick-connect terminals are prone to poor contact due to position deviation. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this utility model provides a precise entry and exit mechanism for a mining electric reversing combination switch. It overcomes the deficiencies of existing technologies, has a reasonable design, and can effectively ensure the smooth and precise movement of the drawer module, enabling the drawer module to precisely connect with the moving contact of the high-voltage vacuum electromagnetic starter's inner cavity.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A precision entry and exit mechanism for a mining electric reversing combination switch includes a guide rail frame, which is fixedly installed above the inner cavity of a high-voltage vacuum electromagnetic starter. T-slots are provided on both side walls of the inner cavity of the guide rail frame. A chassis is slidably connected to the middle of the guide rail frame. Guide wheels are installed on both sides of the chassis, and the guide wheels are embedded in and movably engaged with the T-slots. A lead screw nut is installed in the middle of the chassis, and a lead screw is threadedly connected to the middle of the lead screw nut. The front end of the lead screw passes through the front panel of the high-voltage vacuum electromagnetic starter and is fixedly connected to a crank handle. The lead screw and the front panel of the high-voltage vacuum electromagnetic starter are rotatably connected via bearings.

[0007] A connecting bracket is fixedly connected to the underside of the chassis vehicle, and the connecting bracket is connected to the drawer module; a drawer guide rail is fixedly installed on the lower surface of the inner cavity of the high-voltage vacuum electromagnetic starter, and a movable wheel is installed at the lower end of the drawer module, and the movable wheel is movably connected to the drawer guide rail.

[0008] Preferably, an annular positioning groove is formed around the circumference of the guide wheel, and the outer wall of the T-shaped groove is engaged in the annular positioning groove.

[0009] Preferably, the drawer guide rail has an axially formed guide groove on the inner side of its upper surface, the movable wheel is movably connected in the guide groove, and the gap between the outer side of the movable wheel and the side wall of the guide groove is 0.5mm to 1.5mm.

[0010] This utility model provides a precise entry and exit mechanism for a mining electric reversing combination switch, which has the following advantages: Through the action of the lead screw and lead screw nut forming a sliding pair, the lead screw nut and chassis can move together along the axial direction of the lead screw. During the movement, the guide wheels on both sides of the chassis engage with the T-slots, precisely limiting the movement direction of the entire chassis. This ensures that the chassis and its connected drawer module can only move linearly along the axial direction of the T-slots, effectively guaranteeing the smooth and precise movement of the drawer module and allowing for precise docking between the drawer module and the moving contact inside the high-voltage vacuum electromagnetic starter. Furthermore, since the chassis is moved by the rotation of the lead screw, the force during operation can be precisely controlled, avoiding docking deviations caused by excessively fast or slow movement of the drawer module. This ensures the stability and safety of the entire system, improving the efficiency and lifespan of the equipment. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in this utility model or the prior art, the accompanying drawings used in the description of the prior art will be briefly introduced below.

[0012] Figure 1. Schematic diagram of the structure of this utility model in use;

[0013] Figure 2. Schematic diagram of the structure of this utility model;

[0014] Figure 3. Schematic diagram of the guide rail frame and chassis in this utility model;

[0015] Figure 4. Schematic diagram of the cross-sectional structure of the guide rail frame and chassis in this utility model;

[0016] Explanation of the labels in the diagram:

[0017] 1. Guide rail bracket; 2. T-slot; 3. Chassis; 4. Guide wheel; 5. Screw nut; 6. Screw; 7. High-voltage vacuum electromagnetic starter; 8. Handle; 9. Connecting bracket; 10. Drawer module; 11. Drawer guide rail; 12. Casters; 41. Annular positioning groove. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0019] Example 1, as shown in Figures 1-4, a precise entry and exit mechanism for a mining electric reversing combination switch includes a guide rail frame 1, which is fixedly installed above the inner cavity of a high-voltage vacuum electromagnetic starter 7. T-shaped grooves 2 are provided on both sides of the inner cavity of the guide rail frame 1. A chassis 3 is slidably connected to the middle of the guide rail frame 1. Guide wheels 4 are installed on both sides of the chassis 3, and the guide wheels 4 are embedded in and movably engaged with the T-shaped grooves 2. A lead screw nut 5 is installed in the middle of the chassis 3, and a lead screw 6 is threadedly connected to the middle of the lead screw nut 5. The front end of the lead screw 6 passes through the front panel of the high-voltage vacuum electromagnetic starter 7 and is fixedly connected to a crank handle 8. The lead screw 6 and the front panel of the high-voltage vacuum electromagnetic starter 7 are rotatably connected by a bearing.

[0020] A connecting bracket 9 is fixedly connected to the bottom of the chassis vehicle 3, and the connecting bracket 9 is connected to the drawer module 10; a drawer guide rail 11 is fixedly installed on the lower surface of the inner cavity of the high-voltage vacuum electromagnetic starter 7, and a movable wheel 12 is installed at the lower end of the drawer module 10, and the movable wheel 12 is movably connected to the drawer guide rail 11.

[0021] Working principle:

[0022] When operating the drawer module 10, the crank handle 8 rotates the lead screw 6. This, in turn, creates a sliding pair between the lead screw 6 and the lead screw nut 5, causing the lead screw nut 5 and the chassis 3 to move along the axial direction of the lead screw 6. During this movement, the guide wheels 4 on both sides of the chassis 3 engage with the T-slots 2, precisely limiting the direction of movement. This ensures that the chassis 3 and its connected drawer module 10 can only move linearly along the axial direction of the T-slots 2, effectively guaranteeing the smooth and precise movement of the drawer module 10. This allows for precise docking between the drawer module 10 and the moving contact inside the high-voltage vacuum electromagnetic starter 7. Furthermore, because the chassis 3 is moved by the rotation of the lead screw, the force applied during operation can be precisely controlled, preventing docking deviations caused by excessively fast or slow movement of the drawer module 10. This ensures the stability and safety of the entire system, improving the efficiency and lifespan of the equipment.

[0023] In Embodiment Two, as shown in the figure, as a further preferred embodiment of Embodiment One, an annular positioning groove 41 is formed around the circumference of the guide wheel 4, and the outer wall of the T-shaped groove 2 is engaged within the annular positioning groove 41. By forming the annular positioning groove 41 on the circumference of the guide wheel 4, the T-shaped groove 2 can be interlocked with the guide wheel 4, thereby achieving a tighter positioning effect, effectively preventing lateral displacement of the chassis vehicle 3 during movement, further improving the movement accuracy of the drawer module 10, ensuring its precise docking within the cavity of the high-pressure vacuum electromagnetic starter 7, and thus optimizing the overall operational safety and reliability.

[0024] In embodiment three, as a further preferred embodiment one, a guide groove is axially formed on the inner side of the upper surface of the drawer guide rail 11. The movable wheel 12 is movably connected in the guide groove, and the gap between the outer side of the movable wheel 12 and the side wall of the guide groove is 1mm. Therefore, when the drawer module 10 is driven to move linearly by the chassis 3, the guide groove on the upper surface of the drawer guide rail 11 can further guide the movable wheel 12 at the bottom of the drawer module 10. Furthermore, setting the gap between the outer side of the movable wheel 12 and the side wall of the guide groove to 1mm further ensures the linear movement direction of the drawer module 10.

[0025] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A precise entry and exit mechanism for a mining electric reversing combination switch, characterized in that: The system includes a guide rail frame (1), which is fixedly installed above the inner cavity of the high-voltage vacuum electromagnetic starter (7). T-slots (2) are provided on both sides of the inner cavity of the guide rail frame (1). A chassis (3) is slidably connected to the middle of the guide rail frame (1). Guide wheels (4) are installed on both sides of the chassis (3), and the guide wheels (4) are embedded in the T-slots (2) and move in cooperation with them. A lead screw nut (5) is installed in the middle of the chassis (3), and a lead screw (6) is threadedly connected to the middle of the lead screw nut (5). The front end of the lead screw (6) passes through… A crank handle (8) is fixedly connected to the front panel of the high-voltage vacuum electromagnetic starter (7). The lead screw (6) is rotatably connected to the front panel of the high-voltage vacuum electromagnetic starter (7) through a bearing. A connecting bracket (9) is fixedly connected to the bottom of the chassis (3). The connecting bracket (9) is connected to the drawer module (10). A drawer guide rail (11) is fixedly installed on the lower surface of the inner cavity of the high-voltage vacuum electromagnetic starter (7). A moving wheel (12) is installed at the lower end of the drawer module (10). The moving wheel (12) is movably connected to the drawer guide rail (11).

2. The precise entry and exit mechanism for a mining electric reversing combination switch according to claim 1, characterized in that: The guide wheel (4) has an annular positioning groove (41) around its circumference, and the outer wall of the T-shaped groove (2) is engaged in the annular positioning groove (41).

3. The precise entry and exit mechanism for a mining electric reversing combination switch according to claim 1, characterized in that: The drawer guide rail (11) has an axially formed guide groove on the inner side of its upper surface. The movable wheel (12) is movably connected in the guide groove, and the gap between the outer side of the movable wheel (12) and the side wall of the guide groove is 0.5mm to 1.5mm.

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