Motor wiring connection structure of coal mine electromechanical equipment

Abstract

The utility model relates to the technical field of line connection structures, in particular to a coal mine electromechanical equipment motor wiring connection structure, which comprises a junction box fixedly arranged on a motor, a lead screw embedded in the junction box and rotationally connected with the side wall of the junction box, and a connecting rod arranged in the junction box and connected with the side wall of the junction box. One end of the lead screw penetrates through the side wall of the junction box and extends out of the junction box. The section, located in the inner cavity of the junction box, of the lead screw is in threaded connection with an inner threaded ring. After the joint of an external wire and the metal sheet is burnt out, the screw rod can be rotated to push the inner screw ring to move, the inner screw ring moves to drive the adjusting plate to move synchronously, and the adjusting hole and the guide groove are matched to push the metal sliding column to move towards the threading hole along the guide groove until the metal sheet connected to the metal sliding column extends out of the threading hole. And at the moment, a worker can disassemble and replace the burnt wire outside the junction box without disassembling the sealing cover of the junction box, so that the maintenance is more convenient and quicker for a user.

Description

Technical Field

[0001] The utility model relates to the technical field of line connection structures, in particular to a wiring connection structure for a motor of coal mine electromechanical equipment. Background Art

[0002] In the working environment of coal mines, a large number of electromechanical equipment are often needed to mine or transport coal. The most important electromechanical equipment is the electric motor. Electric power is used to provide power source for the entire electromechanical equipment. The electric motor needs to be connected to an external power source through a wiring structure.

[0003] The existing method generally uses a junction box with built-in terminal blocks to connect the wires. In order to prevent dust and leakage, a dust cover is also required at the open end of the junction box. When the wiring position in the junction box is damaged due to motor overload and burning, the staff needs to remove the dust cover for maintenance. The dust cover is generally fixed with multiple bolts, which is very troublesome to install and disassemble, resulting in inconvenience for the staff to repair. Utility Model Content

[0004] A technical problem to be solved by this application is that when the wiring position in the existing motor junction box is damaged due to motor overload and burning, the staff needs to remove the dust cover for maintenance. The dust cover is generally fixed with multiple bolts, which is troublesome to install and disassemble, making it inconvenient for the staff to repair.

[0005] To solve the above technical problems, the present invention provides a wiring connection structure for a motor of a coal mine electromechanical equipment, comprising a junction box fixedly mounted on the motor, a wire threading hole being formed on a side wall of the junction box, and further comprising:

[0006] A screw rod is embedded in the junction box and rotatably connected to the side wall of the junction box. One end of the screw rod passes through the side wall of the junction box and extends to the outside of the junction box. An inner screw ring is screwed on a section of the screw rod located in the inner cavity of the junction box. Two arc-shaped adjustment plates are symmetrically installed on both sides of the inner screw ring. An adjustment hole is opened on the adjustment plate.

[0007] An electrode plate having a U-shaped structure, the electrode plate is aligned with the threading hole and electrically connected to the motor, the opposite sides of the two horizontal sections of the electrode plate are fixed to the inner wall of the junction box, and a guide groove is provided on the side wall of the adjacent side of the two horizontal sections of the electrode plate;

[0008] A metal slide post, wherein the middle section of the metal slide post passes through the adjustment hole and penetrates the adjustment plate and can slide along the length direction of the adjustment plate. Both ends of the metal slide post are embedded in the guide groove and are slidingly connected to the electrode plate through the guide groove. The metal slide post is also fixedly connected to a metal sheet arranged in alignment with the wire threading hole, and a connector for connecting an external wire is installed on the end of the metal sheet away from the metal slide post.

[0009] Preferably, a sealing ring with an annular structure is provided in the threading hole, and the outer wall of the sealing ring is interference-fitted with the inner wall of the threading hole.

[0010] Preferably, a handle is fixedly connected to one end of the screw rod located outside the junction box, and an outer surface of the handle is provided with anti-slip grooves.

[0011] Preferably, when the metal slide column slides along the adjustment hole to the end of the adjustment plate away from the inner screw ring, the free end of the metal sheet slides to the outside of the junction box through the wire threading hole.

[0012] Preferably, the number of metal sheets installed on each metal slide is two, and a connecting hole is opened at one end of each of the two metal sheets. The metal sheets are sleeved on the metal slide through the connecting hole and fixed to the metal slide, and the adjacent sides of the two metal sheets are in sliding contact with the adjustment plate.

[0013] Preferably, the connecting member is a bolt passing through the metal sheet, and a nut is screwed onto the bolt.

[0014] Preferably, a bearing is installed at the connection between the screw rod and the side wall of the junction box, the inner ring of the bearing is fixed to the screw rod, and the outer ring of the bearing is embedded in and fixed to the side wall of the junction box.

[0015] The utility model has at least the following beneficial effects:

[0016] 1. After the connection between the external wire and the metal sheet is burned, the screw can be rotated to push the inner screw ring to move. The movement of the inner screw ring drives the adjustment plate to move synchronously. The adjustment hole and the guide groove are used to push the metal slide column along the guide groove toward the threading hole until the metal sheet connected to the metal slide column extends out of the threading hole. At this time, the staff can remove the burned wire outside the junction box and replace it without removing the junction box sealing cover, making maintenance more convenient and quick for users.

[0017] 2. A bearing is installed at the connection between the screw rod and the side wall of the junction box to reduce the friction resistance when the user turns the screw rod. At the same time, the bearing is easy to maintain and can effectively prevent rust at the connection between the screw rod and the junction box, which makes it difficult for the user to turn the screw rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the junction box of the utility model;

[0020] Figure 3 This is a schematic diagram of the installation structure of the screw rod, adjustment plate, electrode plate and metal slide column of the utility model;

[0021] Figure 4 For this utility model Figure 3 A magnified view of the local details at point A;

[0022] Figure 5 This is a schematic diagram of the connection structure between the metal sliding column and the metal sheet of the utility model;

[0023] Figure 6 This is a schematic diagram of the installation position of the bearing of the utility model.

[0024] In the figure: 1. Junction box; 2. Threading hole; 3. Sealing ring; 4. Screw; 5. Twist handle; 6. Inner screw ring; 7. Adjustment plate; 8. Adjustment hole; 9. Electrode plate; 10. Guide groove; 11. Metal slide column; 12. Metal sheet; 13. Bolt; 14. Nut; 15. Bearing. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] Example 1

[0027] See also Figure 1-5 , the utility model provides a technical solution:

[0028] A wiring connection structure for a motor of a coal mine electromechanical equipment includes a junction box 1 fixedly mounted on the motor, a wire threading hole 2 being provided on a side wall of the junction box 1, and further includes:

[0029] A screw rod 4 is embedded in the junction box 1 and rotatably connected to the side wall of the junction box 1. One end of the screw rod 4 passes through the side wall of the junction box 1 and extends to the outside of the junction box 1. An inner screw ring 6 is screwed to a section of the screw rod 4 located in the inner cavity of the junction box 1. Two arc-shaped adjustment plates 7 are symmetrically installed on both sides of the inner screw ring 6. The inner screw ring 6 and the adjustment plate 7 are both made of insulating material, and an adjustment hole 8 is opened on the adjustment plate 7;

[0030] The electrode plate 9 is a U-shaped structure, and the electrode plate 9 is aligned with the threading hole 2 and electrically connected to the motor. The two horizontal sections of the electrode plate 9 are fixed to the inner wall of the junction box 1 on the opposite sides, and the side wall of the two adjacent horizontal sections of the electrode plate 9 is provided with a guide groove 10 for guiding function;

[0031] The middle section of the metal slide 11 passes through the adjustment hole 8 and penetrates the adjustment plate 7 and can slide along the length direction of the adjustment plate 7. Both ends of the metal slide 11 are embedded in the guide groove 10 and are slidably connected to the electrode plate 9 through the guide groove 10. The metal slide 11 is also fixedly connected to a metal sheet 12 arranged in alignment with the threading hole 2. The end of the metal sheet 12 away from the metal slide 11 is equipped with a connector for connecting to an external wire; and further includes:

[0032] A sealing ring 3 in an annular structure is provided in the threading hole 2. The outer wall of the sealing ring 3 is interference-fitted with the inner wall of the threading hole 2; it is used to seal the gap between the external wire and the inner wall of the threading hole 2 to improve the sealing effect;

[0033] The screw rod 4 is located on one end outside the junction box 1 and is fixedly connected to a screw handle 5. The outer surface of the screw handle 5 is provided with anti-slip grooves, which makes it convenient for the user to rotate the screw rod 4 by the screw handle 5 to drive the inner screw ring 6 to move along the length direction of the screw rod 4;

[0034] When the metal slide post 11 slides along the adjustment hole 8 to the end of the adjustment plate 7 away from the inner screw ring 6, the free end of the metal sheet 12 slides to the outside of the junction box 1 through the threading hole 2, and further includes:

[0035] Two metal sheets 12 are mounted on each metal slide post 11. A connection hole is formed at one end of each metal sheet 12. The metal sheets 12 are sleeved onto the metal slide post 11 through the connection hole and fixed to the metal slide post 11. Adjacent sides of the two metal sheets 12 are in sliding contact with the adjustment plate 7.

[0036] The connecting member is a bolt 13 passing through the metal sheet 12 , and a nut 14 is screwed onto the bolt 13 .

[0037] The external wire is fixed to the metal sheet 12 by means of bolts 13 and nuts 14, and is electrically connected to the motor through the metal slide post 11 and the electrode plate 9. When the connection between the external wire and the metal sheet 12 is burned due to overload of the motor, the user can rotate the screw rod 4 by twisting the hand 5, and use the thread on the screw rod 4 to push the inner screw ring 6 to move along the length direction of the screw rod 4. During the movement of the inner screw ring 6, the adjusting plate 7 is driven to move synchronously, and the adjusting and guiding effect of the adjusting hole 8 and the guide groove 10 is cooperated to push the metal slide post 11 to move along the guide groove 10 toward the threading hole 2 until the metal sheet 12 connected to the metal slide post 11 extends out of the threading hole 2. At this time, the staff can remove the burned wire and replace it. After the replacement is completed, the staff can rotate the screw rod 4 in the opposite direction, and can cooperate with the adjusting hole 8 and the guide groove 10 to pull the replaced wire back into the junction box 1. The replacement process does not require disassembling the junction box 1, making it more convenient and quick for users to repair.

[0038] Example 2

[0039] See also Figure 6 , the utility model provides a technical solution:

[0040] Different from Example 1, this solution provides another implementation of the wiring connection structure of the motor of coal mine electromechanical equipment:

[0041] A wiring connection structure for a motor of a coal mine electromechanical equipment includes a junction box 1 fixedly mounted on the motor, a wire threading hole 2 being provided on a side wall of the junction box 1, and further includes:

[0042] A screw rod 4 is embedded in the junction box 1 and rotatably connected to the side wall of the junction box 1. One end of the screw rod 4 passes through the side wall of the junction box 1 and extends to the outside of the junction box 1. An inner screw ring 6 is screwed to a section of the screw rod 4 located in the inner cavity of the junction box 1. Two arc-shaped adjustment plates 7 are symmetrically installed on both sides of the inner screw ring 6. The inner screw ring 6 and the adjustment plate 7 are both made of insulating material, and an adjustment hole 8 is opened on the adjustment plate 7;

[0043] The electrode plate 9 is a U-shaped structure, and the electrode plate 9 is aligned with the threading hole 2 and electrically connected to the motor. The two horizontal sections of the electrode plate 9 are fixed to the inner wall of the junction box 1 on the opposite sides, and the side wall of the two adjacent horizontal sections of the electrode plate 9 is provided with a guide groove 10 for guiding function;

[0044] The middle section of the metal slide 11 passes through the adjustment hole 8 and penetrates the adjustment plate 7 and can slide along the length direction of the adjustment plate 7. Both ends of the metal slide 11 are embedded in the guide groove 10 and are slidably connected to the electrode plate 9 through the guide groove 10. The metal slide 11 is also fixedly connected to a metal sheet 12 arranged in alignment with the threading hole 2. The end of the metal sheet 12 away from the metal slide 11 is equipped with a connector for connecting to an external wire; and further includes:

[0045] A bearing 15 is installed at the connection between the screw rod 4 and the side wall of the junction box 1. The inner ring of the bearing 15 is fixed to the screw rod 4, and the outer ring of the bearing 15 is embedded in the side wall of the junction box 1 and fixed to the side wall of the junction box 1.

[0046] The bearing 15 is provided to reduce the friction resistance when the user rotates the screw rod 4. At the same time, the bearing 15 is easy to maintain and can effectively prevent the connection between the screw rod 4 and the terminal box 1 from rusting, which makes it difficult for the user to rotate the screw rod 4.

[0047] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0048] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wiring connection structure for a motor of a coal mine electromechanical equipment, comprising a junction box (1) fixedly mounted on the motor, wherein a wire threading hole (2) is provided on a side wall of the junction box (1), characterized in that: Also included are: A screw rod (4), the screw rod (4) is embedded in the junction box (1) and is rotatably connected to the side wall of the junction box (1), one end of the screw rod (4) passes through the side wall of the junction box (1) and extends to the outside of the junction box (1), an inner screw ring (6) is screwed on a section of the screw rod (4) located in the inner cavity of the junction box (1), two arc-shaped adjustment plates (7) are symmetrically installed on both sides of the inner screw ring (6), and an adjustment hole (8) is opened on the adjustment plate (7); An electrode plate (9), the electrode plate (9) being of a U-shaped structure, the electrode plate (9) being aligned with the threading hole (2) and electrically connected to the motor, the two horizontal sections of the electrode plate (9) being fixed to the inner wall of the junction box (1) on opposite sides, and a guide groove (10) being provided on the side wall of the two horizontal sections of the electrode plate (9); A metal slide (11), wherein the middle section of the metal slide (11) passes through the adjustment hole (8) and penetrates the adjustment plate (7) and can slide along the length direction of the adjustment plate (7); both ends of the metal slide (11) are embedded in the guide groove (10) and are slidably connected to the electrode plate (9) through the guide groove (10); a metal sheet (12) arranged in alignment with the wire threading hole (2) is fixedly connected to the metal slide (11); and a connector for connecting an external wire is installed at one end of the metal sheet (12) away from the metal slide (11).

2. The motor wiring connection structure for coal mine electromechanical equipment according to claim 1, characterized in that: A sealing ring (3) with an annular structure is provided in the threading hole (2), and the outer wall of the sealing ring (3) is interference-engaged with the inner wall of the threading hole (2).

3. The motor wiring connection structure for coal mine electromechanical equipment according to claim 2, characterized in that: A screw handle (5) is fixedly connected to one end of the screw rod (4) located outside the junction box (1), and an anti-slip pattern is provided on the outer surface of the screw handle (5).

4. A coal mine electromechanical equipment motor wiring connection structure according to claim 3, characterized in that: When the metal slide column (11) slides along the adjustment hole (8) to the end of the adjustment plate (7) away from the inner screw ring (6), the free end of the metal sheet (12) slides to the outside of the junction box (1) through the threading hole (2).

5. The motor wiring connection structure for coal mine electromechanical equipment according to claim 4, characterized in that: The number of the metal sheets (12) installed on each metal slide (11) is two, and a connection hole is opened at one end of each of the two metal sheets (12). The metal sheets (12) are sleeved on the metal slide (11) through the connection hole and fixed to the metal slide (11), and the adjacent sides of the two metal sheets (12) are in sliding contact with the adjustment plate (7).

6. The motor wiring connection structure for coal mine electromechanical equipment according to claim 5, characterized in that: The connecting piece is a bolt (13) passing through the metal sheet (12), and a nut (14) is screwed onto the bolt (13).

7. The motor wiring connection structure for coal mine electromechanical equipment according to claim 1, characterized in that: A bearing (15) is installed at the connection between the screw rod (4) and the side wall of the junction box (1); the inner ring of the bearing (15) is fixed to the screw rod (4); and the outer ring of the bearing (15) is embedded in the side wall of the junction box (1) and fixed to the side wall of the junction box (1).

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