Servo motor control box for coal mine

Abstract

The invention relates to the technical field of coal mine servo motor control boxes, and discloses a coal mine servo motor control box which is characterized in that a servo controller for controlling a servo motor is mounted in a control box body; the cooling assembly is arranged on the rear side of the control box body, the cooling assembly is used for conducting heat dissipation on the servo controller, and a limiting assembly and a mounting assembly are arranged at the position, located in the control box body, of one side of the cooling assembly; heat is absorbed through the second heat-conducting fins, then the heat is conducted to the heat-conducting back plate through the heat-conducting mounting plate, then the heat-conducting back plate is cooled through circulating cooling water, the heat on the heat-conducting back plate is conducted to the first heat-conducting fins, the heat is dispersed through the first heat-conducting fins, and the heat dissipation efficiency is improved. Therefore, the heat dissipation effect of the interior of the control box body is improved, the flame-proof performance requirement of coal mine electrical equipment is met, and the heat dissipation requirement that multiple servo motors work at the same time is met.

Description

Technical Field

[0001] The invention relates to the technical field of a servo motor control box for a coal mine, in particular to a servo motor control box for a coal mine. Background Art

[0002] Coal mines refer to places rich in coal resources, which are generally divided into underground coal mines and open-pit coal mines. When the coal seam is far from the surface, it is generally chosen to dig tunnels underground to mine coal, which is an underground coal mine. When the coal seam is very close to the surface, it is generally chosen to directly strip the surface soil layer to mine coal, which is an open-pit coal mine. Coal is the most important solid fuel and a type of combustible organic rock. According to the degree of coalification, it can be divided into four categories: peat, lignite, bituminous coal and anthracite.

[0003] Traditional coal mine robotic arms are all driven by hydraulic systems. Due to the low positioning accuracy of the hydraulic system, servo motors are gradually used to ensure accuracy. However, the explosion-proof requirements of coal mine equipment make it difficult for the servo controller of the servo motor to dissipate heat inside the box, resulting in the inability to use servo motors in coal mines in large quantities. Therefore, a servo motor control box for coal mines is proposed. Summary of the invention

[0004] The purpose of the present invention is to provide a servo motor control box for coal mines, so as to solve the problem mentioned in the above background technology that all traditional coal mine mechanical arms are driven by hydraulic systems. Since the positioning accuracy of the hydraulic systems is not high, servo motors are gradually used to ensure the accuracy. However, the explosion-proof requirements of coal mine equipment make it difficult for the servo controller of the servo motor to dissipate heat inside the box, resulting in the problem that servo motors for coal mines cannot be used in a large number of concentrated ways.

[0005] To achieve the above object, the present invention provides the following technical solution: a servo motor control box for coal mines, comprising

[0006] A control box body, wherein a wiring cavity for connecting lines is arranged on the top of the control box body, and a servo controller for controlling a servo motor is installed inside the control box body;

[0007] A cooling assembly, which is arranged at the rear side of the control box body and is used to dissipate heat from the servo controller. A limit assembly and a mounting assembly are respectively arranged on one side of the cooling assembly, which is located inside the control box body;

[0008] The limiting assembly is used for limiting one end of the servo controller base, and the mounting assembly is used for fixing the other end of the servo controller base.

[0009] Preferably, the above-mentioned cooling assembly includes a thermally conductive back plate, a shell and a first thermally conductive fin. A through groove is opened on the rear side of the control box body. The thermally conductive back plate is installed on the rear side of the control box body and is located outside the through groove. The shell is fixedly connected to one side of the thermally conductive back plate. The first thermally conductive fin is fixedly connected to one side of the thermally conductive back plate and is located inside the shell. The upper and lower ends of the other side of the thermally conductive back plate are fixedly connected with thermally conductive mounting plates, and the opposite sides of the two thermally conductive mounting plates are fixedly connected with second thermally conductive fins.

[0010] Preferably, a water inlet pipe is installed at an upper end of one side of the shell, and a drain pipe is installed at a lower end of the other side of the shell.

[0011] Preferably, the above-mentioned limit assembly includes several fixed plates and connecting plates, and the several fixed plates are fixedly connected to the lower end of the other side of the heat-conducting back plate, and the connecting plate is fixedly connected between the two fixed plates. A long slide groove is provided on one side of the connecting plate, and a groove is provided on one side of the connecting plate located on the outside of the long slide groove. The internal movement of the long slide groove passes through the limit column, and the other end of the limit column is fixedly connected to a pull plate, and the other side of the connecting plate is provided with a slide groove, and a slider is fixedly sleeved on the outer side of the limit column and is slidably connected to the inside of the slide groove, and an adjustment assembly is provided on the inner side of the groove.

[0012] Preferably, the above-mentioned adjustment component includes teeth and gears, the teeth are fixedly connected to the inner sides of the groove, the gear is fixedly sleeved on the outer side of the limiting column, the gear is clamped between the teeth on both sides, and the outer side of the limiting column is movably sleeved with a telescopic spring.

[0013] Preferably, the telescopic spring is located inside the slide slot, one end of the telescopic spring is fixedly connected to one side of the slider, and the other end of the telescopic spring abuts against the bottom of the slide slot.

[0014] Preferably, the above-mentioned mounting assembly includes several mounting plates, two mounting blocks and two guide columns, several of the mounting plates are installed on the upper end of the other side of the thermal conductive back plate, two of the mounting blocks are fixedly connected to the two ends of the mounting plate, two of the guide columns are movably passed through the top of the mounting plate, the bottom ends of the two guide columns are fixedly connected with push columns, and a reset assembly is arranged on the outer side of the push columns and located above the mounting plate, and a disassembly assembly is arranged on the two mounting blocks.

[0015] Preferably, the reset assembly comprises a tension spring, one end of which is fixedly connected to the top of the mounting plate, and the other end of which is fixedly connected to the outer side of the guide column.

[0016] Preferably, the above-mentioned disassembly assembly includes a sliding column, two fixed shafts and an L-shaped bracket, guide grooves are opened on both sides of the two mounting blocks, the sliding column is fixedly connected to the two ends of the push column and is located inside the guide groove, the two fixed shafts are respectively fixedly connected to the opposite sides of the two mounting blocks and are located on the rear side of the guide groove, and the two ends of the L-shaped bracket are respectively movably connected to the outer sides of the two fixed shafts.

[0017] Compared with the prior art, the present invention adopts the above technical solution and has the following technical effects:

[0018] 1. The present invention absorbs heat through the second heat-conducting fin, and then the heat is conducted to the heat-conducting back plate through the heat-conducting mounting plate, and then the heat-conducting back plate is dissipated by circulating cooling water. Moreover, the heat on the heat-conducting back plate is conducted to the first heat-conducting fin, and the heat is dispersed by the first heat-conducting fin, thereby improving the heat dissipation effect inside the control box body, which not only meets the explosion-proof performance requirements of coal mine electrical equipment, but also meets the heat dissipation requirements of multiple servo motors working simultaneously.

[0019] 2. The present invention pulls the L-shaped bracket to rotate on the outside of the fixed shaft so that one end of the L-shaped bracket abuts against the outside of the sliding column. The two sliding columns simultaneously drive the push column to move upward, so that the push column is separated from the other end of the base of the servo controller. The servo controller is then moved upward so that one end of the base of the servo controller is separated from the inside of the connecting plate. The servo controller can be disassembled without the aid of tools, thereby improving the efficiency of servo controller maintenance and saving time and effort.

[0020] 3. The present invention moves by pulling the pull plate, and the pull plate drives the gear to disengage from the teeth on both sides of the groove through the limit column. At this time, the telescopic spring is compressed by the force, and then the pull plate is moved left and right to move, thereby adjusting the distance between the two limit columns. After the adjustment is completed, the pull plate is released, and the limit column will be reset under the action of the telescopic spring force, so that the limit column drives the gear to move between the teeth on both sides, and the position of the limit column can be fixed. It can match the servo controller base with more spacing mounting holes for installation, thereby improving the versatility of the servo controller installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 It is a schematic diagram of the internal structure of the control box body of the present invention;

[0024] Figure 3 It is a schematic diagram of a partial cross-sectional structure of a control box body of the present invention;

[0025] Figure 4 It is a schematic diagram of the housing structure of the present invention;

[0026] Figure 5 It is a schematic diagram of the connecting plate structure of the present invention;

[0027] Figure 6 It is a schematic diagram of the structure of the slider of the present invention;

[0028] Figure 7 It is a schematic diagram of the push column structure of the present invention;

[0029] Figure 8 It is a schematic diagram of the installation structure of the servo controller of the present invention.

[0030] Explanation of the accompanying drawings: 1. Control box body; 2. Wiring cavity; 3. Cooling assembly; 31. Through groove; 32. Heat-conducting back plate; 33. Shell; 34. First heat-conducting fin; 35. Heat-conducting mounting plate; 36. Second heat-conducting fin; 37. Water inlet pipe; 38. Drain pipe; 4. Limiting assembly; 41. Fixing plate; 42. Connecting plate; 43. Long slide groove; 44. Groove; 45. Teeth; 46. Gear; 47. Limiting column; 48. Pull plate; 49. Slide groove; 410. Slider; 411. Telescopic spring; 5. Mounting assembly; 51. Mounting plate; 52. Mounting block; 53. Guide column; 54. Tension spring; 55. Push column; 56. Guide groove; 57. Sliding column; 58. Fixed shaft; 59. L-shaped bracket; 6. Servo controller. DETAILED DESCRIPTION

[0031] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0032] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0033] Example

[0034] See also Figure 1-8 The present invention provides a technical solution: a servo motor control box for a coal mine, comprising a control box body 1, a wiring cavity 2 for connecting lines is arranged on the top of the control box body 1, a servo controller 6 for servo motor control is installed inside the control box body 1; a cooling component 3, the cooling component 3 is arranged on the rear side of the control box body 1, the cooling component 3 is used to dissipate heat for the servo controller 6, one side of the cooling component 3 is located inside the control box body 1, and a limit component 4 and an installation component 5 are respectively arranged; the limit component 4 is used to limit one end of the base of the servo controller 6, and the installation component 5 is used to fix the other end of the base of the servo controller 6.

[0035] By setting up the cooling assembly 3, both the explosion-proof performance requirements of coal mine electrical equipment and the heat dissipation requirements of multiple servo motors working simultaneously are met; the cooling assembly 3 includes a heat-conducting back plate 32, a shell 33 and a first heat-conducting fin 34, a through groove 31 is opened on the rear side of the control box body 1, the heat-conducting back plate 32 is installed on the rear side of the control box body 1 and is located on the outside of the through groove 31, the shell 33 is fixedly connected to one side of the heat-conducting back plate 32, the first heat-conducting fin 34 is fixedly connected to one side of the heat-conducting back plate 32 and is located inside the shell 33, and the heat-conducting The other side of the back plate 32 is fixedly connected to the upper and lower ends with heat-conducting mounting plates 35, and the opposite sides of the two heat-conducting mounting plates 35 are fixedly connected to the second heat-conducting fins 36; the heat is absorbed by the second heat-conducting fins 36, and then the heat is transferred to the heat-conducting back plate 32 through the heat-conducting mounting plates 35, and then the heat is dissipated from the heat-conducting back plate 32 through the circulating cooling water, and the heat on the heat-conducting back plate 32 is transferred to the first heat-conducting fins 34, and the heat is dispersed through the first heat-conducting fins 34, thereby improving the heat dissipation effect inside the control box body 1;

[0036] The gaps between the second heat-conducting fins 36 and the heat-conducting mounting plate 35 and between the heat-conducting mounting plate 35 and the heat-conducting back plate 32 can be evenly coated with thermal grease to improve the heat conduction effect between the heat-conducting components to meet the heat dissipation requirements.

[0037] In order to ensure the cooling effect of the control box body 1; a water inlet pipe 37 is installed at the upper end of one side of the shell 33, and a drain pipe 38 is installed at the lower end of the other side of the shell 33. The water inlet pipe 37 is connected to a water pipe installed with a water pump, and then the drain pipe 38 is connected to the water tank through a pipeline. The water in the water tank is pumped by the water pump to the inside of the shell 33 to dissipate the heat of the heat-conducting back plate 32. The water after absorbing heat is discharged from the water tank through the drain pipe 38 to complete the circulation of cooling water.

[0038] By setting the limit assembly 4, it is convenient to install and limit one end of the base of the servo controller 6; the limit assembly 4 includes a plurality of fixed plates 41 and a connecting plate 42, the plurality of fixed plates 41 are fixedly connected to the lower end of the other side of the heat-conducting back plate 32, the connecting plate 42 is fixedly connected between the two fixed plates 41, a long slide groove 43 is provided on one side of the connecting plate 42, a groove 44 is provided on one side of the connecting plate 42 on the outside of the long slide groove 43, the internal movement of the long slide groove 43 passes through the limit column 47, and the other end of the limit column 47 is fixed A pull plate 48 is connected, a slide groove 49 is opened on the other side of the connecting plate 42, a slider 410 is fixedly sleeved on the outer side of the limit column 47 and is slidably connected to the inside of the slide groove 49, and an adjustment component is arranged on the inner side of the groove 44; by aligning the mounting hole at one end of the base of the servo controller 6 with the two limit columns 47, the servo controller 6 is moved downward, so that the mounting hole of the servo controller 6 contacts the outer sides of the two limit columns 47, and the base of the servo controller 6 is inserted into the inside of the connecting plate 42, the installation of one end of the servo controller 6 can be completed.

[0039] By setting the adjustment component, the servo controller 6 base with more spacing mounting holes can be installed, which improves the versatility of the servo controller 6 installation; the adjustment component includes teeth 45 and gears 46, the teeth 45 are fixedly connected to the inner sides of the groove 44, the gears 46 are fixedly sleeved on the outer side of the limit column 47, the gears 46 are clamped between the teeth 45 on both sides, and the outer side of the limit column 47 is movably sleeved with a telescopic spring 411; the telescopic spring 411 is located inside the slide groove 49, one end of the telescopic spring 411 is fixedly connected to one side of the slider 410, and the telescopic spring 411 is fixedly connected to the slider 410. The other end of 11 contacts the bottom of the slide groove 49; by pulling the pull plate 48 to move, the pull plate 48 drives the gear 46 to disengage from the teeth 45 on both sides of the groove 44 through the limit column 47. At this time, the telescopic spring 411 is compressed by the force, and then the pull plate 48 is moved left and right to move, so as to adjust the distance between the two limit columns 47. After the adjustment is completed, the pull plate 48 is released, and the limit column 47 will be reset under the action of the telescopic spring 411, so that the limit column 47 drives the gear 46 to move between the teeth 45 on both sides, and the position of the limit column 47 can be fixed.

[0040] By setting the installation component 5, the installation of the other end of the servo controller 6 can be completed without the help of tools, which saves time and effort; the installation component 5 includes a plurality of installation plates 51, two installation blocks 52 and two guide columns 53, and the plurality of installation plates 51 are installed on the upper end of the other side of the heat-conducting back plate 32, the two installation blocks 52 are fixedly connected to the two ends of the installation plate 51, and the two guide columns 53 are movable through the top of the installation plate 51, and the bottom ends of the two guide columns 53 are fixedly connected with push columns 55, and the outer side of the push columns 55 is located above the installation plate 51 and a reset component is provided , a disassembly assembly is provided on the two mounting blocks 52; the reset assembly includes a tension spring 54, one end of which is fixedly connected to the top of the mounting plate 51, and the other end of the tension spring 54 is fixedly connected to the outer side of the guide column 53; by abutting the other end of the base of the servo controller 6 against the inclined surface of the push column 55, the push column 55 is pushed to move upward, so that the tension spring 54 on the outer side of the guide column 53 is in a stretched state, and when the base of the servo controller 6 abuts against one side of the heat-conducting mounting plate 35, the tension spring 54 drives the guide column 53 to reset, and the push column 55 abuts against the outer side of the other end of the base of the servo controller 6, saving time and effort.

[0041] By setting a disassembly component, the servo controller 6 can be disassembled without the aid of tools, thereby improving the efficiency of the maintenance of the servo controller 6 and saving time and effort; the disassembly component includes a sliding column 57, two fixed shafts 58 and an L-shaped bracket 59, both sides of the two mounting blocks 52 are provided with guide grooves 56, the sliding column 57 is fixedly connected to the two ends of the push column 55 and is located inside the guide groove 56, the two fixed shafts 58 are respectively fixedly connected to the opposite sides of the two mounting blocks 52 and are located at the rear side of the guide groove 56, and the two ends of the L-shaped bracket 59 are respectively movably connected to the outside of the two fixed shafts 58; by pulling the L-shaped bracket 59 to rotate on the outside of the fixed shaft 58, one end of the L-shaped bracket 59 is abutted against the outside of the sliding column 57, and then the L-shaped bracket 59 pushes the sliding column 57 to move inside the guide groove 56, and the two sliding columns 57 simultaneously drive the push column 55 to move upward, so that the push column 55 is separated from the other end of the base of the servo controller 6, and then the servo controller 6 is moved upward, so that one end of the base of the servo controller 6 is separated from the inside of the connecting plate 42, and the disassembly of the servo controller 6 can be completed.

[0042] The model of the servo controller 6 is LC10L, which is the prior art and will not be described in detail here.

[0043] The working principle or structural principle is that by installing multiple servo controllers 6 inside the control box body 1, the servo controller 6 can control multiple servo motors. During the operation of the servo controller 6, the heat emitted by the upper air outlet and the lower air outlet of the servo controller 6 by air cooling is absorbed by the second heat-conducting fins 36, and then the heat is conducted to the heat-conducting back plate 32 through the heat-conducting mounting plate 35. Then, by connecting the water inlet pipe 37 to a water pipe equipped with a water pump, and then connecting the drain pipe 38 to the water tank through a pipeline, the water in the water tank is pumped by the water pump to the inside of the shell 33 to dissipate the heat of the heat-conducting back plate 32. The water after absorbing heat is discharged from the water tank through the drain pipe 38 to complete the circulation of cooling water. In this process, the heat on the heat-conducting back plate 32 is conducted to the first heat-conducting fins 34, and the heat is dispersed by the first heat-conducting fins 34, thereby improving the heat dissipation effect inside the control box body 1, which not only meets the explosion-proof performance requirements of coal mine electrical equipment, but also meets the heat dissipation requirements of multiple servo motors working simultaneously.

[0044] When the servo controller 6 needs to be disassembled for maintenance, the L-shaped bracket 59 is pulled to rotate on the outside of the fixed shaft 58 so that one end of the L-shaped bracket 59 abuts against the outside of the sliding column 57, and then the L-shaped bracket 59 pushes the sliding column 57 to move inside the guide groove 56. The two sliding columns 57 simultaneously drive the push column 55 to move upward, so that the push column 55 is separated from the other end of the base of the servo controller 6, and then the servo controller 6 is moved upward, so that one end of the base of the servo controller 6 is separated from the inside of the connecting plate 42, and the disassembly of the servo controller 6 is completed. The servo controller 6 can be disassembled without the aid of tools, thereby improving the efficiency of the maintenance of the servo controller 6 and saving time and effort.

[0045] When it is necessary to install the servo controller 6 base with mounting holes of different spacings, the pull plate 48 is pulled to move, and the pull plate 48 drives the gear 46 to disengage from the teeth 45 on both sides of the groove 44 through the limit column 47. At this time, the telescopic spring 411 is compressed by the force, and then the pull plate 48 is moved left and right to move, so as to adjust the distance between the two limit columns 47. After the adjustment is completed, the pull plate 48 is released, and the limit column 47 will be reset under the action of the telescopic spring 411, so that the limit column 47 drives the gear 46 to move between the teeth 45 on both sides, and the position of the limit column 47 can be fixed, so that the servo controller 6 base with mounting holes of more spacings can be matched for installation, thereby improving the versatility of the servo controller 6 installation.

[0046] During installation, the other end of the base of the servo controller 6 is pressed against the inclined surface of the push column 55, thereby pushing the push column 55 upward, so that the tension spring 54 on the outside of the guide column 53 is in a stretched state. When the base of the servo controller 6 presses against one side of the heat-conducting mounting plate 35, the tension spring 54 drives the guide column 53 to reset, and the push column 55 presses against the outside of the base of the servo controller 6. Then, the mounting hole at one end of the base of the servo controller 6 is aligned with the two limit columns 47, and the servo controller 6 is moved downward, so that the mounting hole of the servo controller 6 presses against the outside of the two limit columns 47, and the base of the servo controller 6 is inserted into the inside of the connecting plate 42. The installation of the servo controller 6 can be completed without the need for tools, saving time and effort.

[0047] It will be appreciated by those skilled in the art that the features described in the various embodiments and / or claims of the present invention may be combined and / or combined in various ways, even if such combinations and / or combinations are not explicitly described in the present invention. In particular, the features described in the various embodiments and / or claims of the present invention may be combined and / or combined in various ways without departing from the spirit and teachings of the present invention. All of these combinations and / or combinations fall within the scope of the present invention.

Claims

1. A servo motor control box for coal mines, characterized in that: include A control box body (1), wherein a wiring cavity (2) for connecting a line is arranged on the top of the control box body (1), and a servo controller (6) for controlling a servo motor is installed inside the control box body (1); A cooling assembly (3), the cooling assembly (3) being arranged at the rear side of the control box body (1), the cooling assembly (3) being used to dissipate heat from the servo controller (6), and a limit assembly (4) and a mounting assembly (5) being arranged on one side of the cooling assembly (3) located inside the control box body (1); The limiting component (4) is used for limiting the position of one end of the base of the servo controller (6), and the mounting component (5) is used for fixing the other end of the base of the servo controller (6).

2. A servo motor control box for coal mine according to claim 1, characterized in that: The cooling assembly (3) comprises a heat-conducting back plate (32), a shell (33) and a first heat-conducting fin (34); a through slot (31) is provided on the rear side of the control box body (1); the heat-conducting back plate (32) is installed on the rear side of the control box body (1) and is located outside the through slot (31); the shell (33) is fixedly connected to one side of the heat-conducting back plate (32); the first heat-conducting fin (34) is fixedly connected to one side of the heat-conducting back plate (32) and is located inside the shell (33); the other side of the heat-conducting back plate (32) is fixedly connected to heat-conducting mounting plates (35) at both upper and lower ends; and the opposite sides of the two heat-conducting mounting plates (35) are fixedly connected to second heat-conducting fins (36).

3. A servo motor control box for coal mine according to claim 2, characterized in that: A water inlet pipe (37) is installed at the upper end of one side of the shell (33), and a drain pipe (38) is installed at the lower end of the other side of the shell (33).

4. A servo motor control box for coal mine according to claim 2, characterized in that: The limiting assembly (4) comprises a plurality of fixed plates (41) and connecting plates (42), wherein the plurality of fixed plates (41) are fixedly connected to the lower end of the other side of the heat-conducting back plate (32), and the connecting plate (42) is fixedly connected between the two fixed plates (41). A long slide groove (43) is provided on one side of the connecting plate (42), and a groove (44) is provided on one side of the connecting plate (42) located on the outer side of the long slide groove (43). The inner part of the long slide groove (43) is movable through a limiting column (47), and the other end of the limiting column (47) is fixedly connected to a pull plate (48), and a slide groove (49) is provided on the other side of the connecting plate (42). A slider (410) is fixedly sleeved on the outer side of the limiting column (47) and is slidably connected to the inside of the slide groove (49), and an adjustment assembly is provided on the inner side of the groove (44).

5. A servo motor control box for coal mine according to claim 4, characterized in that: The adjustment component comprises teeth (45) and a gear (46), wherein the teeth (45) are fixedly connected to the inner sides of the groove (44), the gear (46) is fixedly sleeved on the outer side of a limiting column (47), the gear (46) is clamped between the teeth (45) on both sides, and a telescopic spring (411) is movably sleeved on the outer side of the limiting column (47).

6. A servo motor control box for coal mine according to claim 5, characterized in that: The telescopic spring (411) is located inside the slide groove (49), one end of the telescopic spring (411) is fixedly connected to one side of the slider (410), and the other end of the telescopic spring (411) is in contact with the bottom of the slide groove (49).

7. A servo motor control box for coal mine according to claim 2, characterized in that: The mounting assembly (5) comprises a plurality of mounting plates (51), two mounting blocks (52) and two guide columns (53); the plurality of mounting plates (51) are mounted on the upper end of the other side of the heat-conducting back plate (32); the two mounting blocks (52) are fixedly connected to the two ends of the mounting plates (51); the two guide columns (53) are movably connected to the top of the mounting plates (51); the bottom ends of the two guide columns (53) are fixedly connected to push columns (55); a reset assembly is arranged on the outer side of the push columns (55) and located above the mounting plate (51); and a disassembly assembly is arranged on the two mounting blocks (52).

8. A servo motor control box for coal mine according to claim 7, characterized in that: The reset assembly comprises a tension spring (54), one end of the tension spring (54) is fixedly connected to the top of the mounting plate (51), and the other end of the tension spring (54) is fixedly connected to the outer side of the guide column (53).

9. A servo motor control box for coal mine according to claim 7, characterized in that: The disassembly assembly comprises a slide column (57), two fixed shafts (58) and an L-shaped bracket (59); guide grooves (56) are provided on both sides of the two mounting blocks (52); the slide column (57) is fixedly connected to the two ends of the push column (55) and is located inside the guide groove (56); the two fixed shafts (58) are respectively fixedly connected to the opposite sides of the two mounting blocks (52) and are located at the rear side of the guide groove (56); and the two ends of the L-shaped bracket (59) are respectively movably connected to the outer sides of the two fixed shafts (58).

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