A mine explosion-proof latch type low-voltage switch

Abstract

The utility model discloses a kind of mining explosion-proof follow-up low-voltage latch, belong to wire connection technical field, including clamping component, first tubular component, second tubular component and third tubular component connected in sequence;Clamping component is sequentially composed of small inner diameter tubular section, variable diameter tubular section and large inner diameter tubular section, annular pressing plate, sealing washer and fixedly arranged annular baffle are equipped in small inner diameter tubular section, annular pressing plate can extrude sealing washer and make its inner hole shrink by screwing back;Multiple electric conductive sockets are equipped in first tubular component along radial direction interval, and any adjacent electric conductive socket is filled with insulating material;Multiple electric conductive plugs are equipped in second tubular component along radial direction interval, and electric conductive plug includes plug rod arranged along front-back direction and plug quick connector arranged in the rear end of plug rod, and any adjacent electric conductive plug is filled with insulating material. Realize quick plug-in and breaking between power supply and electric equipment, and greatly improve the efficiency of wiring and breaking.

Description

Technical Field

[0001] This utility model relates to the field of electrical connection technology, and more specifically, to a mining explosion-proof continuous low-voltage plug. Background Technology

[0002] Electrical equipment in underground coal mines is required to be explosion-proof. Currently, most connections between power supplies and electrical equipment use explosion-proof wiring ducts. However, these ducts are too small, resulting in slow wiring speeds and potential safety hazards such as water leakage, electrical leakage, and sparks. Therefore, it is necessary to improve the existing technology. Utility Model Content

[0003] The purpose of this utility model is to provide a mine-use explosion-proof, continuous-operation low-pressure latch, aiming to solve at least one of the technical problems existing in the prior art. To achieve the above objective, the technical solution adopted is as follows:

[0004] A mine-use explosion-proof continuous-action low-pressure latch includes a clamping component, a first tubular component, a second tubular component, and a third tubular component connected sequentially from front to back.

[0005] The clamping component consists of a small inner diameter tubular section, a variable diameter tubular section, and a large inner diameter tubular section from front to back. Inside the small inner diameter tubular section, from front to back, there is an annular pressure plate that is threaded to the inner wall of the small inner diameter tubular section, a soft material sealing gasket, and a fixed annular baffle. Twisting the annular pressure plate backward can squeeze the sealing gasket and shrink its inner hole.

[0006] The large-diameter tubular section is connected to the first tubular component via a first union joint;

[0007] Multiple conductive sockets are arranged radially spaced inside the first tubular component. Each conductive socket includes a connecting rod arranged in the front-to-back direction, a quick-connect socket at the front end of the connecting rod, and a cylindrical insertion hole at the rear end of the connecting rod. Insulating material is filled between any adjacent conductive sockets inside the first tubular component.

[0008] The first tubular component and the second tubular component are connected by a second union;

[0009] Multiple conductive plugs are arranged radially within the second tubular component. Each conductive plug includes a prong arranged in the front-to-back direction and a quick connector at the rear end of the prong. Each conductive plug corresponds to a conductive socket, and the prong in the conductive plug can be tightly inserted into the cylindrical socket in the corresponding conductive socket. Insulating material is filled between any adjacent conductive plugs within the second tubular component.

[0010] The second tubular component and the third tubular component are connected by a third union.

[0011] Preferably, the first union includes a first nut, the inner wall of the front end of the first nut is provided with a first rib that is radially inwardly protruding, the first nut is fitted onto the large inner diameter tubular section, the outer wall of the large inner diameter tubular section is provided with a first shoulder that is radially outwardly protruding, the first shoulder is located behind the first rib and is spaced apart from the rear end of the large inner diameter tubular section, the rear end of the large inner diameter tubular section can be inserted into the first tubular component, and the first nut is threadedly connected to the external thread provided on the outer wall of the first tubular component.

[0012] Preferably, the outer wall of the cylindrical insertion hole is provided with a groove, and a steel ring is embedded in the groove.

[0013] Preferably, the second union includes a second nut, the inner wall of the front end of the second nut is provided with a second rib that is radially inwardly protruding, the second nut is fitted onto the first tubular component, the outer wall of the rear port of the first tubular component is provided with a second shoulder that is radially outwardly protruding, the outer wall of the second tubular component is provided with a first convex portion that is radially outwardly protruding, the first convex portion is spaced apart from the front port of the second tubular component, the outer wall of the second tubular component and located behind the first convex portion is provided with a second convex portion that is radially outwardly protruding, the second convex portion is provided with external threads, the front end of the second tubular component can be inserted into the first tubular component, and the second nut is threadedly connected to the second convex portion.

[0014] Preferably, a radially convex anti-reverse ring is provided on the outer wall of the first tubular component and at an interval in front of the second nut.

[0015] Preferably, the third union includes a third nut, the inner wall of the rear end of the third nut is provided with a ring of radially inwardly protruding third rib, the third nut is fitted onto the third tubular component, the outer wall of the third tubular component is provided with a ring of radially outwardly protruding third shoulder, the third shoulder is located in front of the third rib and spaced from the front end of the third tubular component, the front end of the third tubular component can be inserted into the second tubular component, and the third nut is threadedly connected to the external thread provided on the outer wall of the second tubular component.

[0016] Preferably, the clamping component, the first tubular component, the second tubular component, and the third tubular component are all made of galvanized pipe.

[0017] Preferably, the sealing gasket is made of neoprene rubber.

[0018] Preferably, the insulating material is an unsaturated resin.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] This utility model discloses a mine-use explosion-proof continuous low-voltage plug, which enables quick connection and disconnection between the power supply and the electrical equipment, greatly improving the efficiency of wiring and disconnection. In addition, it has good explosion-proof performance and is safe and reliable in operation. Attached Figure Description

[0021] To more clearly illustrate the technical solution of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0023] Figure 2 This is a cross-sectional view of the overall structure of this utility model.

[0024] In the diagram: 1. Clamping component; 2. First tubular component; 3. Second tubular component; 4. Third tubular component; 5. Small inner diameter tubular section; 6. Variable diameter tubular section; 7. Large inner diameter tubular section; 8. Annular pressure plate; 9. Sealing gasket; 10. Annular baffle; 11. First nut; 12. First rib; 13. First shoulder; 14. Connecting rod; 15. Socket quick connector; 16. Cylindrical insertion hole; 17. Steel ring; 18. Second nut; 19. Second rib; 20. Second shoulder; 21. First protrusion; 22. Second protrusion; 23. Insert rod; 24. Plug quick connector; 25. Anti-reverse ring; 26. Third nut; 27. Third rib; 28. Third shoulder. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] like Figures 1 to 2 As shown, a preferred embodiment of this utility model provides a mine explosion-proof continuous low-pressure latch, which includes a clamping component 1, a first tubular component 2, a second tubular component 3 and a third tubular component 4 connected in sequence from front to back.

[0028] The clamping component 1 is an integral structure, consisting of a small inner diameter tubular section 5, a variable diameter tubular section 6, and a large inner diameter tubular section 7, arranged sequentially from front to back. The diameter of the small inner diameter tubular section 5 is smaller than that of the large inner diameter tubular section 7, and the diameter of the variable diameter tubular section 6 gradually increases from front to back. Inside the small inner diameter tubular section 5, from front to back, are arranged an annular pressure plate 8, a sealing washer 9, and an annular baffle 10. The annular pressure plate 8 has a certain thickness, is similar in shape to a nut, has a central inner hole for threading, and external threads on its outer peripheral wall. The annular pressure plate 8 is threadedly connected to the internal threads on the inner wall of the small inner diameter tubular section 5. The sealing washer 9 is made of a soft material; in this embodiment, it is made of neoprene rubber. The sealing washer 9 also has a movable thickness, and similarly, is similar in shape to a nut, with a central inner hole for threading. The annular baffle 10 is fixedly installed on the inner wall of the small inner diameter tubular section 5, with a central inner hole for threading.

[0029] The wire with insulating rubber sheath passes through the inner hole of the annular pressure plate 8, the inner hole of the sealing washer 9, and the inner hole of the annular baffle 10 in sequence, and extends into the large inner diameter tubular section 7. When the annular pressure plate 8 is screwed backward, the sealing washer 9 is pushed to contact the annular baffle 10. As the annular pressure plate 8 is continued to be screwed, the sealing washer 9 is squeezed and shrinks inward along the radial direction, clamping and sealing the wire.

[0030] The large-diameter tubular section 7 is connected to the first tubular component 2 via a first union. Specifically, the first union includes a first nut 11, the inner wall of the front end of the first nut 11 is provided with a first rib 12 that is radially protruding inward, the first nut 11 is fitted onto the large-diameter tubular section 7, the outer wall of the large-diameter tubular section 7 is provided with a first shoulder 13 that is radially protruding outward, the first shoulder 13 is located behind the first rib 12 and is spaced apart from the rear end of the large-diameter tubular section 7.

[0031] When the large inner diameter tubular section 7 is connected to the first tubular component 2, the rear end of the large inner diameter tubular section 7 is first inserted into the first tubular component 2, and then the first nut 11 is threadedly connected to the external thread on the outer wall of the first tubular component 2. After that, the first nut 11 is tightened. In this state, the front end of the first tubular component 2 rests on the first shoulder 13.

[0032] Multiple conductive sockets are arranged radially at intervals inside the first tubular component 2. In this embodiment, seven are provided. The conductive sockets are made of copper and include a connecting rod 14 arranged in the front-to-back direction, a quick-connect socket 15 at the front end of the connecting rod 14, and a cylindrical socket 16 at the rear end of the connecting rod 14. Each cylindrical socket 16 has a groove on its outer wall, and a steel ring 17 is embedded in the groove to improve the stability of the cylindrical socket 16 and prevent deformation during insertion and removal. Insulating material is filled between any adjacent conductive sockets inside the first tubular component 2. In this embodiment, the insulating material is unsaturated resin.

[0033] The first tubular component 2 and the second tubular component 3 are connected by a second union. Specifically, the second union includes a second nut 18, the inner wall of the front end of the second nut 18 is provided with a radially inwardly protruding second rib 19, the second nut 18 is fitted onto the first tubular component 2, and the outer wall of the rear port of the first tubular component 2 is provided with a radially outwardly protruding second shoulder 20. The outer wall of the second tubular component 3 is provided with a radially outwardly protruding first convex portion 21, the first convex portion 21 is spaced apart from the front port of the second tubular component 3, and the outer wall of the second tubular component 3, located behind the first convex portion 21, is provided with a radially outwardly protruding second convex portion 22, the second convex portion 22 is provided with external threads.

[0034] When the first tubular component 2 and the second tubular component 3 are connected, the front end of the second tubular component 3 is first inserted into the first tubular component 2, and then the second nut 18 is threadedly connected to the second protrusion 22. After that, the second nut 18 is tightened. In this state, the first protrusion 21 rests on the second shoulder 20.

[0035] Multiple conductive plugs are arranged radially at intervals inside the second tubular component 3. In this embodiment, there are seven. The conductive plugs are made of copper and include a plug rod 23 arranged in the front-to-back direction and a plug quick connector 24 located at the rear end of the plug rod 23. Insulating material is filled between any adjacent conductive plugs inside the second tubular component 3. In this embodiment, the insulating material is unsaturated resin.

[0036] The seven conductive sockets in the first tubular component 2 correspond one-to-one with the seven conductive plugs in the second tubular component 3. When the first tubular component 2 and the second tubular component 3 are connected, the plug 23 in each conductive plug can be tightly inserted into the cylindrical socket 16 in the corresponding conductive socket.

[0037] Furthermore, a radially protruding anti-reverse ring 25 is provided on the outer wall of the first tubular component 2 and in front of the second nut 18 at intervals. This anti-reverse ring serves to limit the movement of the second nut 18.

[0038] The second tubular component 3 and the third tubular component 4 are connected by a third union. Specifically, the third union includes a third nut 26, the inner wall of the rear end of the third nut 26 is provided with a ring of radially inwardly protruding third ribs 27, the third nut 26 is fitted onto the third tubular component 4, the outer wall of the third tubular component 3 is provided with a ring of radially outwardly protruding third shoulders 28, the third shoulders 28 are located in front of the third ribs 27 and are spaced apart from the front end of the third tubular component 4.

[0039] When the second tubular component 3 and the third tubular component 4 are connected, first insert the front end of the third tubular component 4 into the second tubular component 3, then connect the third nut 26 to the external thread on the outer wall of the second tubular component 3, and then tighten the third nut 26. In this state, the rear end of the second tubular component 3 rests on the third shoulder 28.

[0040] To improve the overall explosion-proof performance of the latch, clamping component 1, first tubular component 2, second tubular component 3 and third tubular component 4 are all made of galvanized pipe.

[0041] During the initial wiring, the large inner diameter tubular section 7 is separated from the first tubular component 2. The wire with insulating rubber is threaded into the clamping component 1 and clamped and sealed. The wire with insulating rubber contains seven low-voltage wires, which correspond one-to-one with the seven conductive sockets in the first tubular component 2. Each low-voltage wire is connected to the quick connector 15 of the corresponding conductive socket. Then, the large inner diameter tubular section 7 is connected to the first tubular component 2.

[0042] Separate the second tubular component 3 and the third tubular component 4. Fix the rear end of the third tubular component 4 to the relevant electrical equipment. The electrical equipment's insulated wires are inserted into the third tubular component 4. The insulated wires contain seven low-voltage wires, which correspond one-to-one with the seven conductive plugs in the second tubular component 3. Connect each low-voltage wire to the quick connector 24 of the corresponding conductive plug. Then connect the second tubular component 3 and the third tubular component 4 together.

[0043] When electricity is needed, simply insert the first tubular component 2 and the second tubular component 3 and tighten the second nut 18. When power needs to be cut off or the equipment needs to be moved, simply loosen the second nut 18 and separate the first tubular component 2 and the second tubular component 3. The insertion and removal are convenient, safe and reliable.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not 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 mining explosion-proof continuous-action type low-voltage latch, characterized in that, It includes a clamping component, a first tubular component, a second tubular component, and a third tubular component connected sequentially from front to back; The clamping component consists of a small inner diameter tubular section, a variable diameter tubular section, and a large inner diameter tubular section from front to back. Inside the small inner diameter tubular section, from front to back, there is an annular pressure plate that is threaded to the inner wall of the small inner diameter tubular section, a soft material sealing gasket, and a fixed annular baffle. Twisting the annular pressure plate backward can squeeze the sealing gasket and shrink its inner hole. The large-diameter tubular section is connected to the first tubular component via a first union joint; Multiple conductive sockets are arranged radially spaced inside the first tubular component. Each conductive socket includes a connecting rod arranged in the front-to-back direction, a quick-connect socket at the front end of the connecting rod, and a cylindrical insertion hole at the rear end of the connecting rod. Insulating material is filled between any adjacent conductive sockets inside the first tubular component. The first tubular component and the second tubular component are connected by a second union; Multiple conductive plugs are arranged radially within the second tubular component. Each conductive plug includes a prong arranged in the front-to-back direction and a quick connector at the rear end of the prong. Each conductive plug corresponds to a conductive socket, and the prong in the conductive plug can be tightly inserted into the cylindrical socket in the corresponding conductive socket. Insulating material is filled between any adjacent conductive plugs within the second tubular component. The second tubular component and the third tubular component are connected by a third union.

2. The explosion-proof, continuous-action low-voltage bolt for mining as described in claim 1, characterized in that, The first swivel joint includes a first nut, the inner wall of the front end of the first nut is provided with a first rib that is radially inwardly protruding, the first nut is fitted on the large inner diameter tubular section, the outer wall of the large inner diameter tubular section is provided with a first shoulder that is radially outwardly protruding, the first shoulder is located behind the first rib and is spaced apart from the rear end of the large inner diameter tubular section, the rear end of the large inner diameter tubular section can be inserted into the first tubular component, and the first nut is threadedly connected to the external thread provided on the outer wall of the first tubular component.

3. The explosion-proof, continuous-action low-voltage bolt for mining as described in claim 1, characterized in that, The outer wall of the cylindrical insertion hole is provided with a groove, and a steel ring is embedded in the groove.

4. A mining explosion-proof continuous-action low-voltage latch according to claim 1, characterized in that, The second union includes a second nut. The inner wall of the front end of the second nut is provided with a second rib that is radially inwardly protruding. The second nut is fitted onto the first tubular component. The outer wall of the rear end of the first tubular component is provided with a second shoulder that is radially outwardly protruding. The outer wall of the second tubular component is provided with a first convex portion that is radially outwardly protruding. The first convex portion is spaced apart from the front end of the second tubular component. The outer wall of the second tubular component, located behind the first convex portion, is provided with a second convex portion that is radially outwardly protruding. The second convex portion is provided with external threads. The front end of the second tubular component can be inserted into the first tubular component, and the second nut is threadedly connected to the second convex portion.

5. A mining explosion-proof continuous-action low-voltage latch according to claim 4, characterized in that, A radially convex anti-reverse ring is provided on the outer wall of the first tubular component and at an interval in front of the second nut.

6. A mining explosion-proof continuous-action low-voltage latch according to claim 1, characterized in that, The third union includes a third nut, the inner wall of the rear end of the third nut is provided with a ring of radially inwardly protruding third rib, the third nut is fitted onto the third tubular component, the outer wall of the third tubular component is provided with a ring of radially outwardly protruding third shoulder, the third shoulder is located in front of the third rib and is spaced from the front end of the third tubular component, the front end of the third tubular component can be inserted into the second tubular component, and the third nut is threadedly connected to the external thread provided on the outer wall of the second tubular component.

7. A mining explosion-proof continuous-action low-voltage latch according to claim 1, characterized in that, The clamping component, the first tubular component, the second tubular component, and the third tubular component are all made of galvanized pipe.

8. A mining explosion-proof continuous-action low-voltage latch according to claim 1, characterized in that, The sealing gasket is made of neoprene rubber.

9. A mining explosion-proof continuous-action low-voltage latch according to claim 1, characterized in that, The insulating material is an unsaturated resin.

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