An explosion-proof connection assembly and lighting control device

Abstract

This utility model discloses an explosion-proof connection assembly and a lighting control device, relating to the technical field of explosion-proof connection assemblies. It includes a mounting component and a movable component. One end of the mounting component has a corresponding fixing component. The mounting component has circumferentially distributed conductive rods connected internally. A wire groove is formed on the opposite side of the fixing component and the movable component. The wire groove is used to place wire terminals. One end of the conductive rod is located within the wire groove, and threaded holes are formed at both ends of the conductive rod. This explosion-proof connection assembly and lighting control device of this utility model has the function of limiting the movement of the wires and copper lugs, preventing the copper lugs from contacting the sidewall or the two connectors from being too close, thus avoiding short circuits. Simultaneously, it allows the movable component and the mounting component to fit together, improving the waterproof capability during connection and preventing short circuits from multiple conductive rods.

Description

Technical Field

[0001] This utility model relates to the field of explosion-proof connection components, and more specifically to an explosion-proof connection component and a lighting control device. Background Technology

[0002] Due to the unique working conditions in mines, lighting devices and systems are typically housed within lighting control units to ensure safe operation. These mine lighting control units, also known as mine explosion-proof vacuum switches, are commonly used in flammable and explosive environments such as coal mines. To guarantee an uninterrupted power supply, they usually have multiple chambers for storing backup power, typically two. The circuits within the two chambers are independently controlled and protected, preventing lighting disruptions due to single-lighting malfunctions or power outages. Because the chambers are independently configured, the wiring between them is usually connected using mine explosion-proof terminals.

[0003] For example, Chinese patent application number 2019216101797 discloses a mine explosion-proof terminal block and electrical equipment, which discloses an explosion-proof terminal block structure with the function of quick plugging in at both the inner and outer ends.

[0004] Current explosion-proof connection components still have the following problems when used:

[0005] 1. The explosion-proof connection assembly is installed inside the lighting control device. The copper lugs of the wires are installed on the connection assembly by bolts. When the bolts are tightened, the friction of the bolts will cause the copper lugs to rotate, which will cause the copper lugs to come into contact with the side wall of the connection assembly. This will not only affect the direction of the wires, but also make it easy for the ends of the two wires to come into contact, affecting the safety of the equipment.

[0006] 2. The pressure plate of the connecting component has an edge (the movable one is the pressure plate, and the other one on the partition is the terminal block). During installation, the edge will contact the partition. Because the edge has a certain height, there is a certain gap between the pressure plate and the terminal block. Due to water leakage in the mine, the leakage between the wire and the connecting component can be dealt with by spraying sealant. However, when liquid seeps into the gap of the connecting component, it will cause multiple conductive rods to connect, resulting in a short circuit and affecting the normal use of the lighting circuit.

[0007] Therefore, it is necessary to propose an explosion-proof connection assembly and a lighting control device to solve the above problems. Utility Model Content

[0008] To address the above problems, this utility model provides an explosion-proof connection assembly and a lighting control device, which serves to ensure that the mounting parts and moving parts fit together, and also serves to limit the movement of the copper lugs, preventing the cable from contacting the side wall or the two connectors from being too close, thereby improving the safety of the equipment.

[0009] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0010] An explosion-proof connection assembly and lighting control device includes a mounting component and a movable component. One end of the mounting component is provided with a corresponding fixing component. The mounting component has circumferentially distributed conductive rods connected internally. A wire groove is formed on the opposite side of the fixing component and the movable component. A hole groove is formed within the wire groove to connect with the conductive rod. The wire groove is used to place a wire terminal. The end of the conductive rod communicates with the wire groove. Threaded holes are formed at both ends of the conductive rod. The threaded holes on the conductive rod are connected to the wire terminal via bolts. A collar is fitted onto the outer ring surface of the movable component. A sliding groove is formed on the inner ring surface of the collar. The depth of the sliding groove at the end furthest from the mounting component is greater than that at the other end. A spring is provided on the outer ring surface of the movable component, with one end of the spring located within the sliding groove.

[0011] The end of the collar away from the mounting component is provided with a limiting part, which limits the wire terminal. The end of the fixing component away from the moving component is provided with a boss located in the wire groove, and the boss has a groove for accommodating the wire terminal.

[0012] Preferably, in order to improve the connection with the slide groove, one end of the spring member is provided with a protrusion located in the slide groove.

[0013] Preferably, in order to facilitate the installation of the spring on the movable part, a mounting groove is provided on the outer ring surface of the movable part, and the spring is located in the mounting groove.

[0014] Preferably, in order to facilitate the installation of the spring member in the mounting groove, the first embodiment is as follows: the end of the spring member away from the protrusion is provided with a bent portion, and the bent portion restricts the spring member in the mounting groove.

[0015] Preferably, in order to facilitate the installation of the spring component in the mounting groove, the second embodiment is as follows: a support portion is provided in the mounting groove, and the support portion limits one end of the spring component.

[0016] Preferably, in order to prevent liquid from entering the gap between the moving part and the fixed part when water leaks, causing multiple conductive rods to leak electricity, a sealing gasket is connected to the end of the moving part facing the fixed part.

[0017] A lighting control device includes a housing, the interior of which is provided with a front partition and a transverse partition, and explosion-proof connection components are connected to the front partition and the transverse partition.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] 1. This device has a movable collar component on the outside of the moving part. When installed with the mounting part, it has the function of limiting the wire and copper lug, preventing the copper lug from contacting the side wall or the two connectors from being too close, thus avoiding short circuits. At the same time, it can make the moving part fit closely with the mounting part, improving the waterproof capability during connection and preventing short circuits from multiple conductive rods.

[0020] 2. This device has a spring component on the outside of the movable part. The outward extension force of the spring component pushes the collar to move away from the end of the wire groove, so that it can be fitted onto the outside of the mounting part. At the same time, the separate setting from the movable part facilitates processing and production.

[0021] 3. This device is equipped with an explosion-proof connection component in the lighting control unit, which improves the stability of the internal lighting circuit connection. Furthermore, through the coordinated arrangement of internal circuits in multiple chambers, the main lighting circuit and the backup lighting circuit can be connected together via the explosion-proof connection component, thus providing uninterrupted lighting. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the explosion-proof connection component installed inside the housing in this utility model;

[0023] Figure 2 This is a top view of the box body and transverse partition structure in this utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the mounting parts and the movable parts in this utility model;

[0025] Figure 4 This is a schematic diagram of the movable part and the collar structure in this utility model;

[0026] Figure 5 This is a cross-sectional view of the moving parts and sealing gasket structure in this utility model;

[0027] Figure 6 This is a schematic diagram of the mounting and fixing components in this utility model;

[0028] Figure 7 This is a schematic diagram of the structure of the first embodiment of this utility model;

[0029] Figure 8 This is a schematic diagram of the structure of the second embodiment of this utility model;

[0030] Figure 9 This is a schematic diagram showing the structural changes during installation in this utility model.

[0031] Figure label:

[0032] 101. Mounting component; 102. Moving component; 103. Fixing component; 104. Conductive rod; 105. Wire groove; 106. Collar; 107. Slide groove; 108. Spring component; 109. Limiting part; 110. Boss; 111. Groove; 112. Protrusion; 113. Mounting groove; 114. Bending part; 115. Support part; 116. Sealing gasket; 117. Housing; 118. Front partition; 119. Horizontal partition. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] The conventional components and key load-bearing components in this case are selected in accordance with standards in terms of material selection, heat treatment process and structural dimensions to ensure that they have sufficient strength, stiffness and fatigue resistance under rated load and expected working conditions. These are all conventional design considerations well known to those skilled in the art.

[0035] Please see Figure 1-9An explosion-proof connection assembly includes a mounting part 101 and a movable part 102. When the explosion-proof connection assembly is installed in a lighting control device, the mounting part 101 passes through a hole in the partition, which is the explosion-proof mating surface. The movable part 102 is installed on the mounting part 101 by bolts, and a copper lug with a wire is used on the bolt. One end of the mounting component 101 is provided with a fixing component 103 corresponding to the mounting component 101. The fixing component 103 and the movable component 102 have the same function. The movable component 102 is movable and detachable. The fixing component 103 is fixed to the mounting component 101. The interior of the mounting component 101 is connected with circumferentially distributed conductive rods 104. The two ends of the conductive rods 104 are connected to the copper lugs of the wires by bolts. The fixing component 103 and the movable component 102 have wire grooves 105 on their opposite sides. The movable component 102 and the fixing component 103 have wire grooves 105 arranged at equal intervals at their edges. A strip-shaped wire groove 105 is also provided in the middle position. Each wire groove 105 is set separately to prevent multiple wires from contacting each other. The wire groove 105 in the middle position can also be used to connect cables, but it usually only serves a fixing function. The wire groove 105 has a slot for connecting to the conductive rod 104. The wire groove 105 is used to place the wire terminal. The end of the conductive rod 104 is connected to the wire groove 105. Threaded holes are provided at both ends of the conductive rod 104, and these threaded holes are blind holes. The movable part 102 is bolted to the conductive rod 104 of the mounting part 101. The threaded holes on the conductive rod 104 are connected to the wire terminal by bolts. A collar 106 is fitted on the outer ring surface of the movable part 102. For ease of production, the movable part 102 and the collar 106 are separate. A sliding groove 107 is provided on the inner ring surface of the collar 106. The depth of the sliding groove 107 at the end away from the mounting part 101 is greater than that at the other end. The sliding groove 107 is referenced to... Figure 7 The outer ring surface of the movable component 102 is provided with a spring component 108. One end of the spring component 108 is located in the slide groove 107. When the collar 106 is sleeved on the movable component 102, one end of the spring component 108 is located in the slide groove 107. Under the action of the spring component 108, the collar 106 moves away from the end of the wire groove 105. When the movable component 102 is installed on the explosion-proof mating surface, the collar 106 will always be in contact with the partition plate, which does not affect the contact between the movable component 102 and the mounting component 101, so that the movable component 102 can fit together with the mounting component 101, avoiding gaps at the connection and improving the stability of the connection. In one embodiment, the spring component 108 is a ball spring pin, which pushes the collar 106 to move by the extension of the end ball in the slide groove 107.

[0036] The collar 106 is provided with a limiting part 109 at the end away from the mounting part 101. The limiting part 109 is V-shaped, with the lowest position in the middle and arc surfaces at both ends. When the collar 106 moves towards the wire groove 105, it will limit the copper lug of the wire, guide it to the middle position, and keep it in the middle position to avoid excessive rotation of the wire copper lug. The limiting part 109 limits the wire terminal. The fixing part 103 is provided with a boss 110 located in the wire groove 105 at the end away from the moving part 102. Since the fixing part 103 at the other end is in a fixed position, it is sufficient to limit the cable. The boss 110 is provided with a groove 111 for accommodating the wire terminal.

[0037] When installing the wire lug at the end of the fixing member 103, place one end of the lug into the groove 111. When tightening the bolt, the lug will not rotate with the bolt. Because the space at the end of the movable member 102 is limited, a limiting part 109 is provided on the collar 106 to limit the lug's position. This not only limits the lug's position but also allows it to be automatically centered without affecting the available space.

[0038] When using the movable part 102, first cover the mounting part 101 with the movable part 102, making sure that the hole on it corresponds to the conductive rod 104. Then, install the bolts on the conductive rod 104 of the mounting part 101 through the holes. Note that it is only screwed on, not tightened. Then tighten the bolt in the center position. The collar 106 moves with the movable part 102. At this time, one end of the collar 106 contacts the partition. The limiting part 109 at one end of the collar 106 limits the copper lug and centers it. When the movable part 102 is in contact with the mounting part 101, one end of the copper lug will be located at the deepest part of the limiting part 109, which can limit multiple copper lugs. Finally, tighten the remaining bolts.

[0039] Comparison with traditional explosion-proof connection components:

[0040] In traditional explosion-proof connection assemblies, the connecting post is inserted through the explosion-proof mating surface of the partition, and the pressure plate is fixed to the connecting post with bolts. Since the pressure plate has an edge for fitting onto the connecting post, the edge will contact the partition, resulting in a gap between the pressure plate and the connecting post. Moreover, when tightening the bolts on the copper lug, the copper lug may rotate.

[0041] In this application, the mounting component 101 and the fixing component 103 correspond to conventional connecting posts, the movable component 102 corresponds to the pressure plate, and the collar 106 is slidably connected to the movable component 102, allowing the movable component 102 to be fully pressed against the mounting component 101. As the collar 106 moves upward, the limiting part 109 restricts the copper lugs of the wires, keeping them centered and preventing the two cable connectors from being too close together.

[0042] refer to Figure 7 In order to improve the connection between the spring member 108 and the slide groove 107, one end of the spring member 108 is provided with a protrusion 112 located in the slide groove 107. The protrusion 112 pushes the collar 106 to move away from the end of the wire groove 105 by an outward force.

[0043] refer to Figure 7 To facilitate the installation of the spring element 108 onto the movable element 102, a mounting groove 113 is provided on the outer ring surface of the movable element 102. In one embodiment, the spring element 108 is made of a metal sheet that can be pushed into the mounting groove 113. The spring element 108 is located within the mounting groove 113, and then the collar 106 is fitted onto the outside of the movable element 102. This separate arrangement facilitates production. The bottom of the mounting groove 113 is provided with a slope to facilitate pushing the spring element 108 into the mounting groove 113.

[0044] refer to Figure 7 To facilitate the installation of the spring 108 into the mounting groove 113 and to limit its movement, the first embodiment of the limiting method is as follows: a bent portion 114 is provided at the end of the spring 108 away from the protrusion 112, and a corresponding hole is provided in the mounting groove 113 to accommodate the bent portion 114. The bent portion 114 restricts the spring 108 within the mounting groove 113 and prevents the spring 108 from detaching from the mounting groove 113.

[0045] refer to Figure 8 To facilitate the installation of the spring 108 into the mounting groove 113 and to limit its movement, a second embodiment of the limiting method is provided: a support portion 115 is provided in the mounting groove 113. The support portion 115 is stepped and limits one end of the spring 108, thereby restricting the end of the spring 108 away from the boss 110 and preventing it from slipping out after being locked in place.

[0046] refer to Figure 5 and Figure 7In order to prevent liquid from entering the gap between the movable part 102 and the fixed part 103 when water leaks, causing multiple conductive rods 104 to leak electricity, a sealing gasket 116 is connected to the end of the movable part 102 facing the fixed part 103. Through the action of the sealing gasket 116 between the movable part 102 and the mounting part 101, the liquid that enters can be prevented from flowing in the gap.

[0047] A lighting control device includes a housing 117. The housing 117 has a front partition 118 and a transverse partition 119 inside. The front partition 118 and the transverse partition 119 serve to divide the interior into multiple chambers. Explosion-proof connection components are connected to the front partition 118 and the transverse partition 119. The explosion-proof connection components inside increase the stability of the circuit.

[0048] In this embodiment, the explosion-proof connection assembly is installed on the front partition 118 and the transverse partition 119 of the lighting control device. The explosion-proof connection assembly is used to connect the cables of the lighting circuit. During installation, the mounting part 101 is passed through the explosion-proof mating surface, and the movable part 102 is installed on the mounting part 101 by bolts. During installation, the limiting part 109 on the collar 106 plays a limiting role on the wire and copper lug to avoid contact with the side wall or the two connectors being too close. The limiting action is completed when tightened.

[0049] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. An explosion-proof connection assembly, characterized in that: The device includes a mounting component (101) and a movable component (102). One end of the mounting component (101) is provided with a fixing component (103) corresponding to the mounting component (101). The interior of the mounting component (101) is connected to a circumferentially distributed conductive rod (104). The fixing component (103) and the movable component (102) opposite to each other are provided with a wire groove (105). The wire groove (105) is provided with a hole groove connected to the conductive rod (104). The wire groove (105) is used to place a wire terminal. The end of the conductive rod (104) is connected to the conductive rod. The wire groove (105) is connected. The conductive rod (104) has threaded holes at both ends. The threaded holes on the conductive rod (104) are connected to the wire terminal by bolts. The outer ring surface of the movable part (102) is fitted with a collar (106). The inner ring surface of the collar (106) is provided with a sliding groove (107). The depth of the sliding groove (107) at the end away from the mounting part (101) is greater than that at the other end. The outer ring surface of the movable part (102) is provided with a spring (108). One end of the spring (108) is located in the sliding groove (107). The collar (106) is provided with a limiting part (109) at one end away from the mounting part (101), and the limiting part (109) plays a limiting role for the wire terminal. The fixing part (103) is provided with a boss (110) located in the wire groove (105) at one end away from the moving part (102), and the boss (110) is provided with a groove (111) for accommodating the wire terminal.

2. The explosion-proof connection assembly according to claim 1, characterized in that: One end of the spring (108) is provided with a protrusion (112) located in the groove (107).

3. The explosion-proof connection assembly according to claim 2, characterized in that: The outer ring surface of the movable part (102) is provided with a mounting groove (113), and the spring part (108) is located in the mounting groove (113).

4. The explosion-proof connection assembly according to claim 3, characterized in that: The spring member (108) has a bent portion (114) at one end away from the protrusion (112), which restricts the spring member (108) within the mounting groove (113).

5. The explosion-proof connection assembly according to claim 4, characterized in that: A support portion (115) is provided in the mounting groove (113), and the support portion (115) limits one end of the spring member (108).

6. The explosion-proof connection assembly according to claim 4, characterized in that: The movable part (102) is connected to a sealing gasket (116) at one end facing the fixed part (103).

7. A lighting control device, comprising a housing (117), wherein a front partition (118) and a transverse partition (119) are provided inside the housing (117), characterized in that: The front partition (118) and the transverse partition (119) are connected to an explosion-proof connection assembly as described in claim 6.

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