Cable clamp for coal mining machine

Abstract

The utility model discloses a cable clamp for coal mining machine, which relates to the technical field of coal mining machine, including two end plates symmetrically arranged at intervals, magnets installed on the outer surfaces of the end plates, two connecting plates symmetrically and spaced apart between the two end plates, transverse axis pins rotatably connected in the connecting plates, both ends of the transverse axis pins protrude from the connecting plates, the bent section at the end of the transverse axis pin is located in a groove on the end plate, a limiting groove is provided on the bottom wall of the groove, and the bent section is clamped with the limiting groove; first compression springs are provided at both ends of the connecting plates, one end of the first compression spring abuts against the connecting plate, and the other end of the first compression spring abuts against the end plate. The utility model discloses a cable clamp for coal mining machine, which can solve the defect that the transverse axis pin of the cable clamp rotates due to vibration after long-term use.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mining machines, in particular to a cable clamp for coal mining machines. Background Art

[0002] The power of the coal mining machine is very large, and the power supply cable is not only heavy but also long. The main body of the cable is placed in the cable trough at the rear of the scraper conveyor. During operation, the coal mining machine reciprocates on the fully mechanized mining face, and the cable is bent and squeezed along with the traction of the coal mining machine. The protective shell composed of cable clamps is wrapped around the outside of the cable to protect the cable from damage. However, during the production process of the inclined or steeply inclined working face, the coal mining machine cable will slide down under the action of its own gravity, or even fall out of the trough, seriously threatening the personal safety of the workers on the working face. At the same time, the impact force of the slide can easily damage the cable and cause a power supply accident.

[0003] The patent with announcement number CN214314355U discloses a magnetic anti-slip cable clamp for coal mining machines used in the fully mechanized mining working face of inclined coal seams, including C-shaped guard plates arranged on left and right sides, the notches of the C-shaped guard plates are arranged relatively, and upper and lower connecting cover plates are arranged between the notches of the C-shaped guard plates, and the upper and lower connecting cover plates are fixed to the C-shaped guard plates through the transverse axis pins of the cable clamps. The C-shaped guard plates and the upper and lower connecting cover plates form a protective shell wrapped around the cable, and the front and rear parts of the C-shaped guard plates are provided with hinge connection holes for connecting the cable clamps in series with each other. A groove for accommodating a strong magnet is provided on the outer surface of the C-shaped guard plate, and a single or multiple strong magnets are provided in the groove, and the strong magnet is fixed to the groove by bolts or sealing glue.

[0004] The above patent uses a strong magnet attached to the cable clamp to increase the sliding friction between the cable and the cable trough to prevent the cable from sliding down and causing an accident. However, the inventor found during use that after long-term use, the transverse axis pin of the cable clamp will rotate due to vibration and other reasons. When the bending part of the end of the transverse axis pin of the cable clamp is aligned with the through groove on the C-type guard plate (the through groove is used for the bending part of the transverse axis pin of the cable clamp to pass through when installing or removing the C-type guard plate), the connection between the C-type guard plate and the upper and lower connecting cover plates will become unstable, and there is a potential risk of separation between the C-type guard plate and the upper and lower connecting cover plates. If the above situation occurs in multiple cable clamps connected in sequence, the C-type guard plate and the upper and lower connecting cover plates will separate during the dragging process of the cable clamp.

[0005] Therefore, it is necessary to develop a cable clamp for coal mining machine in view of the above defects. Utility Model Content

[0006] The utility model aims to provide a cable clamp for a coal mining machine, which can solve the defect that the transverse axis pin of the cable clamp rotates due to vibration after long-term use.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0008] The utility model discloses a cable clamp for a coal mining machine, comprising two end plates symmetrically arranged at intervals, magnets being installed on the outer sides of the end plates, two connecting plates symmetrically and spaced apart being arranged between the two end plates, each of the connecting plates being rotatably connected with a transverse axis pin, both ends of the transverse axis pin protruding out of the connecting plates, the bent sections at the ends of the transverse axis pin being located in grooves on the end plates, a limiting groove being provided on the bottom wall of the groove, one end of the limiting groove being connected with the through groove of the end plates, and the bent section being clamped with the limiting groove; first compression springs are provided at both ends of the connecting plates, one end of the first compression spring abuts against the connecting plate, and the other end of the first compression spring abuts against the end plates.

[0009] Furthermore, two positioning grooves are provided on one side of the end plate away from the groove, and the positioning grooves are arranged one-to-one with the two grooves on the end plate. Positioning blocks are integrally formed at both ends of the connecting plate, and the positioning blocks match the positioning grooves. One end of the positioning block probes into the positioning groove, and there is a gap between the end face of the positioning block and the bottom wall of the positioning groove, and the gap is greater than or equal to the depth of the limit groove.

[0010] Furthermore, at least one blind hole is formed on a side of the positioning block or the connecting plate close to the end plate, the first compression spring is arranged in one-to-one correspondence with the blind hole and is coaxially located in the blind hole, and one end of the first compression spring protrudes out of the blind hole and abuts against the end plate.

[0011] Furthermore, the ends of the bending sections are all configured as square heads, and the square heads are matched and clamped with the limiting grooves.

[0012] Furthermore, a wear-resistant layer is provided on the outer surface of the magnet.

[0013] Furthermore, a mounting hole is provided on the end plate, the depth of the mounting hole is greater than the thickness of the magnet, the magnet is slidably fitted in the mounting hole along the depth direction of the mounting hole, a second compression spring is provided between the magnet and the bottom wall of the mounting hole, and the outer side surface of the magnet is flush with the outer side surface of the end plate, and at least two clamping components are provided on the periphery of the magnet, and the clamping components are clamped with the side walls of the mounting hole.

[0014] Furthermore, the clamping assembly includes a third compression spring and a slider, at least two sliding holes are spaced apart around the magnet, the slider is slidably connected to the sliding hole, the third compression spring is arranged between the slider and the sliding hole, one end of the slider protrudes out of the sliding hole, a socket corresponding to the protruding end of the slider is provided on the side wall of the mounting hole, one side of the socket extends to the bottom wall of the mounting hole, and the protruding end of the slider slides with the socket along the depth direction of the mounting hole.

[0015] Furthermore, a limiting hole is provided at the center of one end of the magnet, one end of the second compression spring abuts against the bottom wall of the limiting hole, and the other end of the second compression spring abuts against the bottom wall of the mounting hole.

[0016] Compared with the prior art, the beneficial technical effects of the utility model are:

[0017] The utility model discloses a cable clamp for a coal mining machine. The first compression spring generates elastic force on the end plate, so that the distance between the two end plates remains stable, and the bending section is limited by the limiting groove and cannot rotate, thereby effectively solving the defect that the transverse axis pin will rotate after the cable clamp is used for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model will be further described below in conjunction with the accompanying drawings.

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0020] Figure 2 It is a three-dimensional structural schematic diagram of the utility model from another angle;

[0021] Figure 3 It is a schematic diagram of the exploded structure of the utility model;

[0022] Figure 4 It is a cross-sectional structural schematic diagram of the utility model;

[0023] Figure 5 for Figure 4 The enlarged structural diagram at A in the middle;

[0024] Figure 6 It is a cross-sectional structural schematic diagram of the utility model;

[0025] Figure 7 for Figure 6 The enlarged structural diagram at B in the middle;

[0026] Figure 8 is a schematic diagram of the three-dimensional structure of the end plate;

[0027] Fig. 9It is a schematic diagram of the three-dimensional structure of the end plate from another angle;

[0028] Fig.10 Schematic diagram of the three-dimensional structure of the horizontal axis pin;

[0029] Fig.11 A three-dimensional structural schematic diagram of another way of opening a blind hole on a connecting plate.

[0030] Explanation of the accompanying drawings: 1. end plate; 101. groove; 102. positioning groove; 103. mounting hole; 104. plug hole; 2. connecting plate; 201. positioning block; 202. blind hole; 3. transverse axis pin; 301. bending section; 4. magnet; 401. wear-resistant layer; 402. sliding hole; 5. limiting groove; 6. first compression spring; 7. second compression spring; 8. third compression spring; 9. slider. DETAILED DESCRIPTION

[0031] The core of the utility model is to provide a cable clamp for a coal mining machine, which can solve the defect that the transverse axis pin of the cable clamp rotates due to vibration after long-term use.

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "middle", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0034] In a specific embodiment of the present invention, Figures 1 to 11As shown, it includes two end plates 1 that are symmetrically arranged at intervals, and magnets 4 are installed on the outer surfaces of the end plates 1. Two connecting plates 2 are symmetrically and spaced between the two end plates 1. A transverse axis pin 3 is rotatably connected in each connecting plate 2, and both ends of the transverse axis pin 3 protrude out of the connecting plate 2. The bent section 301 at the end of the transverse axis pin 3 is located in the groove 101 on the end plate 1, and a limiting groove 5 is provided on the bottom wall of the groove 101. One end of the limiting groove 5 is connected to the through groove of the end plate 1, and the bent section 301 is clamped with the limiting groove 5; first compression springs 6 are provided at both ends of the connecting plate 2, one end of the first compression spring 6 abuts against the connecting plate 2, and the other end of the first compression spring 6 abuts against the end plate 1.

[0035] Specifically, the first compression spring 6 generates elastic force on the end plate 1, so that the distance between the two end plates 1 remains stable, and the bending section 301 is limited by the limiting groove 5 and cannot rotate, thereby effectively solving the defect that the cross-axis pin 3 of the cable clamp will rotate after long-term use.

[0036] Two positioning grooves 102 are provided on one side of the end plate 1 away from the groove 101. The positioning grooves 102 are arranged one by one with the two grooves 101 on the end plate 1. Positioning blocks 201 are integrally formed at both ends of the connecting plate 2. The positioning blocks 201 match the positioning grooves 102. One end of the positioning block 201 is inserted into the positioning groove 102. There is a gap between the end face of the positioning block 201 and the bottom wall of the positioning groove 102. The gap is greater than or equal to the depth of the limiting groove 5. Specifically, because the elastic force of the first compression spring 6 causes a gap between the end face of the positioning block 201 and the bottom wall of the positioning groove 102, the end plate 1 can be disassembled. When the two end plates 1 are brought close to each other, the limiting groove 5 can no longer limit the bending section 301. After the bending section 301 is rotated to align with the through groove of the end plate 1, the end plate 1 can be removed. When installing the end plate 1, the bending section 301 is aligned with the through groove of the end plate 1, the positioning groove 102 is plugged with the positioning block 201, and the positioning block 201 is abutted against the bottom wall of the positioning groove 102. At this time, the bending section 301 can be rotated to align the bending section 301 with the limiting groove 5, and the end plate 1 is released. The two end plates 1 move away from each other under the elastic force of the first compression spring 6, and the bending section 301 is engaged with the limiting groove 5, thereby completing the installation of the end plate 1.

[0037] At least one blind hole 202 is opened on the side of the positioning block 201 or the connecting plate 2 close to the end plate 1 , and the first compression spring 6 is arranged one-to-one with the blind hole 202 and is coaxially located in the blind hole 202 , and one end of the first compression spring 6 protrudes out of the blind hole 202 and abuts against the end plate 1 . Figure 3 As shown, a blind hole 202 is opened on the positioning block 201. Fig.11 It is shown that the blind hole 202 is opened on the connecting plate 2.

[0038] The ends of the bending sections 301 are all configured as square heads, which match and snap into the limiting grooves 5 .

[0039] The outer surface of the magnet 4 is provided with a wear-resistant layer 401. The wear-resistant layer 401 can be a ceramic coating, a Kevlar coating or a Teflon coating. The service life of the magnet 4 can be effectively extended by providing the wear-resistant layer 401.

[0040] The end plate 1 is provided with a mounting hole 103, the depth of which is greater than the thickness of the magnet 4, and the magnet 4 is slidably fitted in the mounting hole 103 along the depth direction of the mounting hole 103, and a second compression spring 7 is provided between the magnet 4 and the bottom wall of the mounting hole 103, and the outer side of the magnet 4 is flush with the outer side of the end plate 1, and at least two clamping components are provided around the magnet 4, and the clamping components are clamped with the side wall of the mounting hole 103. Since the magnet 4 can slide, when a piece of broken coal hits the magnet 4, the second compression spring 7 can buffer the impact force, thereby reducing the probability of the magnet 4 being damaged.

[0041] The clamping assembly includes a third compression spring 8 and a slider 9. At least two sliding holes 402 are arranged at intervals around the magnet 4. The slider 9 is slidably connected to the sliding hole 402. The third compression spring 8 is arranged between the slider 9 and the sliding hole 402. One end of the slider 9 protrudes from the sliding hole 402. A plug hole 104 corresponding to the protruding end of the slider 9 is opened on the side wall of the mounting hole 103. One side of the plug hole 104 extends to the bottom wall of the mounting hole 103. The protruding end of the slider 9 slides with the plug hole 104 along the depth direction of the mounting hole 103. The slider 9 is used to limit the magnet 4 to prevent it from slipping out of the mounting hole 103. When installing the magnet 4, the slider 9 is pushed into the sliding hole 402, the angle of the sliding hole 402 and the plug hole 104 are aligned, and then the magnet 4 is placed in the mounting hole 103. When the slider 9 is aligned with the plug hole 104, the slider 9 enters the plug hole 104 at one end under the elastic force of the third compression spring 8, thereby completing the installation of the magnet 4.

[0042] A limiting hole is provided at the center of one end of the magnet 4, one end of the second compression spring 7 abuts against the bottom wall of the limiting hole, and the other end of the second compression spring 7 abuts against the bottom wall of the mounting hole 103. The second compression spring 7 is limited by the limiting hole to prevent the second compression spring 7 from moving at will.

[0043] The utility model discloses a working principle of a cable clamp for a coal mining machine: the first compression spring 6 generates elastic force on the end plate 1, so that the distance between the two end plates 1 remains stable, and the bending section 301 is limited by the limiting groove 5 and cannot rotate, thereby effectively solving the defect that the transverse axis pin 3 of the cable clamp will rotate after long-term use.

[0044] Install the end plate 1, and install the two end plates 1 at the same time: align the bending section 301 with the through slot of the end plate 1, plug the positioning slot 102 with the positioning block 201, and make the positioning block 201 abut against the bottom wall of the positioning slot 102. At this time, the bending section 301 can be rotated to align the bending section 301 with the limiting slot 5, and the end plate 1 is released. The two end plates 1 move away from each other under the elastic force of the first compression spring 6, and the bending section 301 is engaged with the limiting slot 5, thereby completing the installation of the end plate 1. Disassemble the end plate 1, and make the two end plates 1 approach each other, so that the limiting slot 5 can no longer limit the bending section 301. After the bending section 301 is rotated to align with the through slot of the end plate 1, the end plate 1 can be removed.

[0045] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other, and the embodiments can be combined with each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0046] The above embodiments are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A cable clamp for a coal mining machine, comprising two end plates (1) symmetrically arranged at intervals, a magnet (4) being installed on the outer surface of the end plate (1), two connecting plates (2) being symmetrically and spaced apart between the two end plates (1), each connecting plate (2) being rotatably connected to a transverse axis pin (3), both ends of the transverse axis pin (3) protruding from the connecting plate (2), a bent section (301) at the end of the transverse axis pin (3) being located in a groove (101) on the end plate (1), characterized in that: A limiting groove (5) is provided on the bottom wall of the groove (101), one end of the limiting groove (5) is connected to the through groove of the end plate (1), and the bending section (301) is clamped with the limiting groove (5); a first compression spring (6) is provided at both ends of the connecting plate (2), one end of the first compression spring (6) is in contact with the connecting plate (2), and the other end of the first compression spring (6) is in contact with the end plate (1).

2. The cable clamp for coal mining machine according to claim 1, characterized in that: Two positioning grooves (102) are provided on a side of the end plate (1) away from the groove (101), and the positioning grooves (102) are arranged in a one-to-one correspondence with the two grooves (101) on the end plate (1). Positioning blocks (201) are integrally formed at both ends of the connecting plate (2), and the positioning blocks (201) match the positioning grooves (102). One end of the positioning block (201) extends into the positioning groove (102), and there is a gap between the end surface of the positioning block (201) and the bottom wall of the positioning groove (102), and the gap is greater than or equal to the depth of the limiting groove (5).

3. The cable clamp for coal mining machine according to claim 2, characterized in that: At least one blind hole (202) is provided on a side of the positioning block (201) or the connecting plate (2) close to the end plate (1); the first compression spring (6) is arranged in one-to-one correspondence with the blind hole (202) and is coaxially located in the blind hole (202); one end of the first compression spring (6) protrudes out of the blind hole (202) and abuts against the end plate (1).

4. The cable clamp for coal mining machine according to claim 1, characterized in that: The ends of the bending sections (301) are both arranged as square heads, and the square heads match and snap-fit ​​with the limiting grooves (5).

5. The cable clamp for coal mining machine according to claim 1, characterized in that: The outer surface of the magnet (4) is provided with a wear-resistant layer (401).

6. The cable clamp for coal mining machine according to claim 1, characterized in that: The end plate (1) is provided with a mounting hole (103), the depth of the mounting hole (103) is greater than the thickness of the magnet (4), the magnet (4) is slidably fitted in the mounting hole (103) along the depth direction of the mounting hole (103), a second compression spring (7) is provided between the magnet (4) and the bottom wall of the mounting hole (103), and the outer side surface of the magnet (4) is flush with the outer side surface of the end plate (1), and at least two clamping components are provided around the magnet (4), and the clamping components are clamped with the side wall of the mounting hole (103).

7. The cable clamp for coal mining machine according to claim 6, characterized in that: The clamping assembly comprises a third compression spring (8) and a slider (9); at least two sliding holes (402) are arranged at intervals around the magnet (4); the slider (9) is slidably connected to the sliding hole (402); the third compression spring (8) is arranged between the slider (9) and the sliding hole (402); one end of the slider (9) protrudes out of the sliding hole (402); a plug hole (104) corresponding to the protruding end of the slider (9) is opened on the side wall of the mounting hole (103); one side of the plug hole (104) extends to the bottom wall of the mounting hole (103); the protruding end of the slider (9) is slidably matched with the plug hole (104) along the depth direction of the mounting hole (103).

8. The cable clamp for coal mining machine according to claim 6, characterized in that: A limiting hole is provided at the center of one end of the magnet (4), one end of the second compression spring (7) abuts against the bottom wall of the limiting hole, and the other end of the second compression spring (7) abuts against the bottom wall of the mounting hole (103).

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