Mining wiring device

Abstract

The utility model relates to the technical field of junction boxes, in particular to a mining junction device, which comprises a junction box body, a binding belt, a connecting plate, an adjusting screw rod and a lead tube fixedly connected with the outer wall of the junction box body, an annular mounting cavity is formed in the inner wall of the lead tube, and a sliding hole is formed in the inner wall of the mounting cavity. The binding belt is arranged on the inner wall of the lead tube in a sleeving mode, the end of the binding belt penetrates through the sliding hole and extends to the outer side of the sliding hole, and the connecting plate is fixedly connected to the outer end of the binding belt; the adjusting screw rod is rotationally connected to the outer wall of the lead pipe, the end of the adjusting screw rod penetrates through the connecting plate and is in threaded connection with the connecting plate, the binding belt comprises a wide belt and a narrow belt which are integrally formed, and a through hole is formed in the outer wall of the wide belt. The adjusting screw rod is rotated to drive the connecting plate to translate, the ring diameter of the binding belt can be tightened, the design can meet the installation requirements of cables with different diameters, and the cables are prevented from loosening and falling off when being pulled by external force.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of junction box, more specifically, relate to a mine junction device. BACKGROUND

[0002] The mine junction device is an important component of the underground electrical system, and its safety and reliability directly affect the safety of mine operation.

[0003] The traditional mine junction box generally uses a fixed size sealing ring or rigid strap to fix the cable, however, this design is difficult to adapt to the installation requirements of different diameter cables, lacks adjustability, and the cable is easy to loosen and fall off when pulled by external force. Therefore, we propose a mine junction device. SUMMARY

[0004] The utility model proposes a mine junction device, which can tighten the ring diameter of the restraint belt by rotating the adjusting screw rod to drive the connecting plate to translate, can adapt to the installation requirements of different diameter cables, and can avoid the cable from loosening and falling off when pulled by external force.

[0005] The utility model proposes a mine junction device, which includes a junction box body, a restraint belt, a connecting plate and an adjusting screw rod, a lead pipe is fixedly connected to the outer wall of the junction box body, an annular mounting cavity is formed in the inner wall of the lead pipe, and a sliding hole is formed in the inner wall of the mounting cavity.

[0006] The restraint belt is sleeved on the inner wall of the lead pipe, and the end portion of the restraint belt extends to the outside through the sliding hole;

[0007] The connecting plate is fixedly connected to the outer end of the restraint belt, the adjusting screw rod is rotatably connected to the outer wall of the lead pipe, and the end portion of the adjusting screw rod penetrates through the connecting plate and is threadedly connected thereto.

[0008] The restraint belt includes a wide belt and a narrow belt which are integrally formed, a through hole is formed in the outer wall of the wide belt, the end portion of the narrow belt penetrates through the through hole and is slidably connected thereto, and extends to the outside of the lead pipe.

[0009] Preferably, bolt holes are formed at the top four corners of the junction box body, fixed bolts are inserted into the top four corners of the junction box cover, and the bottom of the fixed bolt is threadedly connected with the bolt hole.

[0010] Preferably, connecting ears are fixedly connected to the four corners of the outer side wall of the junction box body, and connecting holes are formed in the top of the connecting ears.

[0011] Preferably, an inner cavity is formed in the top of the junction box body, and a junction plate is fixedly installed in the inner wall of the inner cavity.

[0012] Preferably, a plurality of heat dissipation plates are fixedly connected to the outer wall of the terminal box body, and ends of the heat dissipation plates penetrate through the terminal box body and extend into the inner cavity.

[0013] Preferably, a circular through hole is formed in one side of the heat dissipation plate outside the terminal box body, and a trumpet-shaped air guide nozzle is fixedly arranged at two ends of the through hole.

[0014] Preferably, the connecting plate is provided with a threaded through hole matched with the adjusting screw.

[0015] Preferably, the lead tube extends to the inside of the terminal box body, and the lead tube is connected and communicated with the inner cavity.

[0016] Preferably, a flange is formed on the top of the terminal box body, and the flange is inserted and matched with the bottom of the terminal box cover.

[0017] By the above technical scheme, the utility model has the advantages of:

[0018] 1. When the adjusting screw is rotated, the connecting plate connected by threads moves along the axial direction of the screw, drives the end of the restraint belt to slide in the sliding hole, and the narrow belt passes through the through hole on the wide belt to form a sliding pair. When the adjusting screw is rotated, the wide belt and the narrow belt slide relatively, the restraint belt is contracted, and the cable in the lead tube is restrained and fixed. This design can adapt to the installation requirements of cables with different diameters and avoid loosening and falling off of the cable when the cable is pulled by external force.

[0019] 2. The heat dissipation plates are distributed in a radial manner, the part extending to the inner cavity can transfer the heat in the terminal box body to the part of the heat dissipation plates outside, and the trumpet-shaped air guide nozzle arranged outside can pass through when the external airflow passes through, accelerates the exhaust of the hot air in the inner cavity, and improves the heat dissipation efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a whole structure schematic view of the utility model;

[0021] Figure 2 It is an internal structure schematic view of the utility model;

[0022] Figure 3 It is an installation structure schematic view of the restraint belt of the utility model;

[0023] Figure 4 It is a local structure schematic view of the lead tube of the utility model;

[0024] Figure 5 It is a structure schematic view of the air guide nozzle of the utility model;

[0025] Figure 6 It is a structure schematic view of the restraint belt of the utility model.

[0026] In the figure: 1, the terminal box body; 2, the terminal box cover; 3, the fixing bolt; 4, the bolt hole; 5, the connecting lug; 6, the connecting hole; 7, the inner cavity; 8, the terminal board; 9, the flange; 10, the heat sink; 11, the air guide nozzle; 12, the lead tube; 13, the mounting cavity; 14, the sliding hole; 15, the restraint belt; 151, the wide belt; 152, the narrow belt; 153, the through hole; 16, the connecting plate; 17, the adjusting screw. DETAILED DESCRIPTION

[0027] Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without making creative labor belong to the scope of the utility model protection.

[0028] In the utility model, unless another explicit provision and limitation, the term "fixedly connected" should be broadly understood, for example, "fixedly connected" can be fixedly installed, can also be detachably connected, or be integrated; can be mechanically connected, can also be electrically connected; can be directly connected.For the ordinary skilled in the art, the specific meaning of the above-mentioned term in the utility model can be understood according to the specific circumstances.

[0029] As shown in Figure 1 , Figure 2 , Figure 3 and Figure 5 , a kind of mine wiring device, including terminal box body 1, restraint belt 15, connecting plate 16 and adjusting screw 17, lead tube 12 is fixedly connected to the outer wall of terminal box body 1, annular mounting cavity 13 is set in the inner wall of lead tube 12, sliding hole 14 is set in the inner wall of mounting cavity 13;

[0030] Restraint belt 15 is sleeved on the inner wall of lead tube 12, restraint belt 15 end passes through sliding hole 14 and extends to its outside;

[0031] Connecting plate 16 is fixedly connected to the outer end of restraint belt 15;Adjusting screw 17 is rotatably connected to the outer wall of lead tube 12, and the end of adjusting screw 17 penetrates connecting plate 16 and is screw-connected with it;

[0032] Restraint belt 15 includes integrally formed wide belt 151 and narrow belt 152, through hole 153 is set in the outer wall of wide belt 151, the end of narrow belt 152 penetrates through hole 153 and is slidably connected with it, and extends to the outside of lead tube 12.

[0033] In the above structure, when restraint belt 15 is assembled, first, narrow belt 152 is passed through the through hole 153 of wide belt 151 to form a ring structure, then the free end is led out through sliding hole 14, and the ring diameter of restraint belt 15 can be tightened by rotating adjusting screw 17 to drive connecting plate 16 to translate, this design can adapt to the installation demand of different diameter cables, and avoid the cable from loosening and falling off when being pulled by external force.

[0034] As Figure 1 and Figure 2 As shown in the drawings, the junction box body 1 top four corners are provided with bolt holes 4, the corresponding junction box cover 2 top four corners are inserted with fixing bolts 3, the bottom of the fixing bolt 3 is threadedly connected with the bolt hole 4.

[0035] In the above structure, the junction box body 1 is made of explosion-proof alloy casting, the bolt holes 4 distributed at the top four corners form detachable connection with the fixing bolts 3 of the junction box cover 2. The four connecting ears 5 are fixed to the roadway support through the connecting holes 6 by expansion bolts;

[0036] The bolt holes 4 symmetrically distributed at four corners cooperate with the fixing bolts 3 to form uniform pressure distribution, ensuring the sealing property of the contact surface between the junction box cover 2 and the junction box body 1, avoiding local deformation leakage caused by traditional single-sided locking.

[0037] As Figure 1 and Figure 2 As shown in the drawings, the junction box body 1 outer side wall four corners are fixedly connected with connecting ears 5, the connecting ears 5 top are provided with connecting holes 6, the junction box body 1 top is provided with an inner cavity 7, and the inner wall of the inner cavity 7 is fixedly installed with a junction plate 8.

[0038] As Figure 2 and Figure 5 As shown in the drawings, the junction box body 1 outer wall is fixedly connected with a plurality of heat dissipation plates 10, the heat dissipation plates 10 end portions penetrate through the junction box body 1 and extend to the inside of the inner cavity 7. The heat dissipation plates 10 located at one side of the outside of the junction box body 1 are provided with circular through holes, both ends of the through holes are fixedly provided with horn-shaped air guide nozzles 11, the lead wire tube 12 end portion extends to the inside of the junction box body 1, and the lead wire tube 12 is connected with the inner cavity 7.

[0039] In the above structure, the heat dissipation plates 10 are radially distributed, the part extending to the inner cavity 7 can transfer the heat in the junction box body 1 to the part of the heat dissipation plates 10 outside, the horn-shaped air guide nozzles 11 arranged outside can pass through when the external airflow passes through, accelerating the hot air in the outer end through hole of the heat dissipation plate 10 to be discharged, improving the heat dissipation efficiency.

[0040] As Figure 1 and Figure 2 As shown in the drawings, the junction box body 1 top is upwardly protruded to form a flange 9, and the flange 9 is insertedly matched with the bottom of the junction box cover 2.

[0041] In the above structure, the flange 9 and the junction box cover 2 insertion structure realize quick alignment, ensuring the bolt holes 4 to be accurately aligned.

[0042] Working principle: when the rotating adjusting screw 17 is rotated, the threaded connecting plate 16 moves along the screw axis, and the end of the binding belt 15 slides in the sliding hole 14, the narrow belt 152 slides through the through hole 153 on the wide belt 151 to form a sliding pair, when the rotating adjusting screw 17 is rotated, the wide belt 151 and the narrow belt 152 slide relatively to make the binding belt 15 shrink, and the cable in the lead tube 12 is bound and fixed;

[0043] When the cable is vibrated by external force, the elastic binding belt 15 can be slightly deformed to buffer the stress.

[0044] The heat dissipation plate 10 is distributed radially, and the part extending to the inner cavity 7 can transfer the heat in the terminal box body 1 to the part of the heat dissipation plate 10 outside, and the horn-shaped air guide nozzle 11 arranged outside can pass through when the external airflow passes through the horn-shaped air guide nozzle 11 to dissipate heat.

[0045] It should be noted that the terms "comprising", "including", or any other variant thereof are intended to cover non-exclusive inclusions, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such a process, method, article or device.

[0046] Although the embodiments of the present application have been shown and described, it should be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A mining junction device, characterized in that, Include: The terminal box body (1), the terminal box body (1) outer wall fixedly connected with the lead pipe (12); The annular mounting cavity (13) is opened in the inner wall of the lead pipe (12), and the sliding hole (14) is opened in the inner wall of the mounting cavity (13); The restraint band (15) is sleeved on the inner wall of the lead pipe (12), and the end of the restraint band (15) extends to the outside of the sliding hole (14); The connecting plate (16) is fixedly connected to the outer end of the restraint band (15); The adjusting screw (17) is rotatably connected to the outer wall of the lead pipe (12), and the end of the adjusting screw (17) penetrates the connecting plate (16) and is threadedly connected therewith; The restraint band (15) comprises a wide band (151) and a narrow band (152) integrally formed, the outer wall of the wide band (151) is provided with a through hole (153), the end of the narrow band (152) penetrates the through hole (153) and is slidably connected therewith, and extends to the outside of the lead pipe (12).

2. The mining wiring device of claim 1, wherein: The terminal box cover (2) is provided with a bolt hole (4) at the top of each corner, and a fixing bolt (3) is inserted into the bolt hole (4) at the top of each corner of the terminal box cover (2), and the bottom of the fixing bolt (3) is threadedly connected with the bolt hole (4).

3. The mining wiring device of claim 2, wherein: The connecting lug (5) is fixedly connected to the outer wall of the terminal box body (1) at each corner, and the connecting hole (6) is formed in the top of the connecting lug (5).

4. The mining wiring device of claim 3, wherein: The terminal box body (1) is provided with an inner cavity (7) at the top, and the terminal board (8) is fixedly installed on the inner wall of the inner cavity (7).

5. The mining wiring device of claim 4, wherein: The terminal box body (1) is fixedly connected with a plurality of heat dissipation plates (10), and the end of the heat dissipation plate (10) penetrates the terminal box body (1) and extends into the inner cavity (7).

6. The mining wiring device of claim 5, wherein: The heat dissipation plate (10) is provided with a circular through hole on one side outside the terminal box body (1), and the trumpet-shaped air guide nozzle (11) is fixedly connected to both ends of the through hole.

7. The mining wiring device of claim 6, wherein: The connecting plate (16) is provided with a threaded hole matched with the adjusting screw (17).

8. The mining wiring device of claim 7, wherein: The end of the lead pipe (12) extends into the terminal box body (1), and the lead pipe (12) is connected with the inner cavity (7).

9. The mining wiring device of claim 7, wherein: The flange (9) is formed by protruding upward at the top of the terminal box body (1), and the flange (9) is inserted into the bottom of the terminal box cover (2).

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