An electrical braking control device for a coal shearer
By designing a combination structure of the anti-fall body and the dust-proof body on the remote control of the coal mining machine, the problems of easy damage and inconvenient operation of the remote control are solved, and a higher dust-proof effect and service life are achieved.
Patent Information
- Application Number
- CN202010994968.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-09-21
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2040-09-21
AI Technical Summary
The remote control of conventional coal mining machines is susceptible to dust erosion, the button structure is complex and inconvenient to operate, and it is easy to be damaged and difficult to protect when it falls.
An electrical braking control device of a coal mining machine is designed, and a structure that combines a fall-proof body and a dust-proof body. The fall-proof body contacts the ground through the first roller to buffer the impact. The dust-proof body achieves sealing and convenient operation through structures such as dust covers and transparent pressure plates.
It effectively protects the remote control from damage when dropped, improves the convenience and accuracy of operation, significantly enhances dust protection and extends the service life of the device.
Smart Images
Figure CN112324436B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of shearer electric braking control equipment, and specifically to a shearer electric braking control device. Background Technique
[0002] Conventional shearer electric braking control mainly uses a shearer remote control. However, the gap between the buttons of the conventional shearer remote control and the body is too large, making it easy for dust to enter. Moreover, the conventional shearer remote control is easily damaged when dropped. Since the upper structure of the buttons of the shearer remote control is complex, it is inconvenient to observe the button marks and inconvenient to touch, position, and press. Therefore, there is an urgent need for a solution to alleviate the above problems. Summary of the Invention
[0003] The purpose of the present invention is to provide a shearer electric braking control device to solve the problems raised in the above background technique.
[0004] To achieve the above object, the present invention provides the following technical solution: An electric braking control device for a shearer, including a shearer remote control structure. The shearer remote control structure includes a shearer remote control, which includes an antenna and a body. The body is electrically connected through an external power supply. The rear end of the antenna is fixedly connected to the front end of the body as a whole. The shearer remote control structure further includes a anti-fall main body and a dust-proof main body. There are four anti-fall main bodies, which are fixedly connected to the four outer corners of the shearer remote control. There are eight dust-proof main bodies, which are symmetrically and rotatably installed at the inner side end of the body. The anti-fall main body is fixedly connected to the body as a whole; The anti-fall main body includes a bearing, a threaded rod, a first roller and a mounting seat. The bearing is rotatably installed at the upper end of the threaded rod. The threaded rod penetrates through the bearing. The lower end of the threaded rod is fixedly installed inside the mounting seat by threads. The inner end of the first roller is fixedly connected to the outer end of the bearing. The mounting seat is fixedly connected to the body as a whole; The shearer remote control further includes buttons. There are eight buttons, which are slidably and insertedly installed inside the body; The dust-proof main body includes a dust-proof cover and a rotating seat. The dust-proof cover is snap-fitted to the outer end of the rotating seat. The rotating seat is rotatably installed at the inner side end of the body. The dust-proof cover is in sliding contact with the inner side wall of the body. The dust-proof cover covers the outside of the button. The lower wall of the dust-proof cover is in rolling contact with the button; The button includes a second roller, a housing frame and a groove. The groove is opened on the surface of the housing frame. The second roller is located inside the groove. The side end of the second roller is rotatably installed inside the housing frame. The lower end of the housing frame is slidably inserted into the inner end of the body. The upper end of the second roller supports on the outer wall of the dust-proof cover; The dust-proof cover includes a transparent pressing plate, a second elastic piece, a clamping block, a binding groove and a fixing sleeve. The side wall of the transparent pressing plate is in sliding contact with the body. The side end of the transparent pressing plate is fixedly connected to the fixing sleeve as a whole. The lower end of the second elastic piece is fixedly inserted into the inner end of the body. The outer wall of the second elastic piece is in sliding contact with the outer wall of the fixing sleeve. The clamping block is fixedly connected to the inner end of the binding groove. The clamping block is snap-fitted to the rotating seat. The binding groove is opened inside the fixing sleeve. The rotating seat is inserted into the inner end of the binding groove; The rotating seat includes an insertion block, a rotating shaft and a card slot. The card slot is opened on the outer wall of the lower end of the insertion block. The clamping block is snap-fitted to the inner end of the card slot. The upper end of the insertion block is slidably inserted into the inner end of the binding groove. The rotating shaft is fixedly connected to the lower end of the insertion block. The rotating shaft is rotatably inserted into the inner end of the body.
[0005] Preferably, the anti-fall main body further includes a knob. The lower end of the knob is fixedly connected to the upper end of the threaded rod as a whole. The upper end of the bearing does not contact the knob.
[0006] Preferably, the anti-drop main body further includes a spherical annular leather block, which surrounds the outer sides of the bearing and the threaded rod, and the lower end of the spherical annular leather block is fixedly connected to the upper end of the first roller as a whole.
[0007] Preferably, the shearer remote control further includes a retaining rod. There are three retaining rods, and the lower ends of the retaining rods are fixedly connected to the inner ends of the machine body as a whole, and the dust cover is in sliding and sealing contact with the retaining rods.
[0008] Preferably, the dust cover further includes a leather block, which is fixedly connected to the side end of the transparent pressing plate, and the dust covers are pressed together through the leather block.
[0009] Preferably, the button further includes a rotating shaft seat. There is a pair of rotating shaft seats, and the lower ends of the rotating shaft seats are fixedly connected to the shell frame as a whole, and the side end of the second roller is rotatably installed on the inner side end of the rotating shaft seat.
[0010] Preferably, the dust cover further includes a transparent convex block, and the lower end of the transparent convex block is fixedly connected to the upper end of the transparent pressing plate as a whole.
[0011] Preferably, the dust cover further includes a first elastic sheet. One end of the first elastic sheet is fixedly connected to the side end of the fixed sleeve, and the upper wall of the first elastic sheet is in sliding contact with the lower wall of the transparent pressing plate.
[0012] Preferably, the dust cover further includes a handle, which is fixedly connected to the outer end of the lower part of the fixed sleeve.
[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:
[0014] 1. During use, when the user accidentally drops the device, the first roller in the anti-drop main body first contacts the ground, and the soft characteristic of the anti-drop main body is used to buffer the acting force after contacting the ground, achieving the purpose of initially protecting the device. Then, the rolling contact method between the first roller and the ground is used to make the device roll forward along the ground through the anti-drop main body, changing the direction of the acting force after impact, achieving the purpose of converting the impact kinetic energy into the moving energy along the ground. By converting the direction of the kinetic energy, the harmful shock kinetic energy is converted into harmless moving energy, and the device gradually stops due to the friction force when rolling along the ground, achieving the purpose of protecting the device.
[0015] 2. When the user needs to press the button, first press the transparent pressing plate with the hand, drive the fixed sleeve to deflect through the transparent pressing plate, drive the insert block to deflect by overcoming the second elastic sheet through the fixed sleeve, and press the button by driving the transparent pressing plate to deflect downward, so that the dust cover can prevent dust while not affecting the operation of the button, improving the practicability of the dust cover.
[0016] 3. The spherical annular leather block is used to increase the buffering range of the anti-fall main body, preventing the upper end of the first roller from directly contacting the ground, achieving the purpose of protecting the first roller. The bearing is used to reduce the rotational resistance of the first roller, thereby improving the steering efficiency of the first roller and further protecting the device.
[0017] 4. The blocking rod is used to block the gap in the dust-proof cover, preventing dust from bypassing the dust-proof cover and entering the interior of the machine body, improving the sealing performance of the dust-proof cover, and further enhancing the dust-proof ability of the machine body device. The dust-proof covers are pressed together by leather blocks, enabling the transparent pressing plate to deflect downward with external force and recover upward. At the same time, the gap between the transparent pressing plates can be sealed by the leather blocks, thus achieving the purpose of completely sealing the upper space of the machine body and allowing normal operation of the buttons, improving the anti-dust ability of the machine body. The second roller is conveniently rotatably installed on the shell frame through the rotating shaft seat.
[0018] 5. By the way that the transparent convex block protrudes upward, it is convenient for the user to touch and position the finger, thereby improving the accuracy of the pressing position. The external label is placed in the gap between the first elastic sheet and the transparent pressing plate. Observing the label through the transparent pressing plate and pressing it facilitates the user to press the dust-proof cover corresponding to the label. The handle facilitates the user to apply force. Pulling the handle outward drives the lower part of the fixed sleeve to deform outward, enabling the clamping block to leave the clamping groove, thus facilitating the disassembly of the dust-proof cover. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic diagram of the main structure of the present invention;
[0020] Figure 2 It is a schematic diagram of the split structure of the anti-fall main body of the present invention;
[0021] Figure 3 It is a schematic diagram of the structure of the shearer remote control of the present invention;
[0022] Figure 4 It is a schematic diagram of the structure of the dust-proof main body of the present invention;
[0023] Figure 5 It is a schematic diagram of the button structure of the present invention;
[0024] Figure 6 It is a schematic diagram of the split structure of the dust-proof cover of the present invention;
[0025] Figure 7 It is a schematic diagram of the rotating seat structure of the present invention.
[0026] In the figure: 1. Structure of the shearer remote control; 2. Anti-drop main body; 3. Shearer remote control; 4. Dust-proof main body; 5. Button; 6. Dust-proof cover; 7. Rotating base; 8. Knob; 9. Bearing; 10. Threaded rod; 11. Spherical ring leather block; 12. First roller; 13. Mounting seat; 14. Antenna; 15. Body; 16. Stop bar; 17. Installation groove; 18. Second roller; 19. Shell frame; 20. Groove; 21. Rotating shaft seat; 22. Transparent convex block; 23. Transparent pressing plate; 24. Leather block; 25. First elastic sheet; 26. Handle; 27. Second elastic sheet; 28. Block; 29. Binding groove; 30. Fixed sleeve; 31. Insert block; 32. Rotating shaft; 33. Card slot. Detailed implementation manners
[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.
[0028] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is the relative relationship of the orientation or position, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.
[0029] Please refer to Figure 1-7, an embodiment provided by the present invention: a shearer electric braking control device, including a shearer remote control structure 1. The shearer remote control structure 1 includes a shearer remote control 3. The shearer remote control 3 includes an antenna 14 and a body 15. The body 15 is electrically connected through an external power supply. The rear end of the antenna 14 is fixedly connected to the front end of the body 15 as a whole. The shearer remote control structure 1 further includes an anti-drop main body 2 and a dust-proof main body 4. There are four anti-drop main bodies 2, and the anti-drop main bodies 2 are fixedly connected to the outer corners of the shearer remote control 3. There are 8 dust-proof main bodies 4, and the dust-proof main bodies 4 are symmetrically and rotatably installed at the inner side end of the body 15. The anti-drop main body 2 is fixedly connected to the body 15 as a whole; the impact force is buffered by the anti-drop main body 2, and the dust-proof main body 4 is used to block outside the gaps of the shearer remote control 3 to prevent dust from entering the inside of the shearer remote control 3; the anti-drop main body 2 includes a bearing 9, a threaded rod 10, a first roller 12 and a mounting seat 13. The bearing 9 is rotatably installed at the upper end of the threaded rod 10. The threaded rod 10 passes through the bearing 9. The lower end of the threaded rod 10 is fixedly installed by threading in the inner end of the mounting seat 13. The inner end of the first roller 12 is fixedly connected to the outer end of the bearing 9. The mounting seat 13 is fixedly connected to the body 15 as a whole; the first roller 12 is used to buffer the anti-drop main body 2 by preferentially contacting the force-applying object. The anti-drop main body 2 is a leather item; the shearer remote control 3 further includes buttons 5. There are eight buttons 5, and the buttons 5 are slidably and fittedly installed at the inner end of the body 15; the internal components of the body 15 are controlled by pressing the buttons 5 to achieve conventional remote control operations, and the antenna 14 is used to transmit and receive signals; the dust-proof main body 4 includes a dust-proof cover 6 and a rotating seat 7. The dust-proof cover 6 is snap-fitted and installed at the outer end of the rotating seat 7. The rotating seat 7 is rotatably installed at the inner side end of the body 15. The dust-proof cover 6 is in sliding contact with the inner side wall of the body 15. The dust-proof cover 6 covers the outside of the buttons 5. The lower wall of the dust-proof cover 6 is in rolling contact with the buttons 5; the dust-proof cover 6 is used to cover the outside of the buttons 5 to prevent dust from directly invading the gap between the buttons 5 and the body 15; the dust-proof cover 6 is rotatably installed with the body 15 through the rotating seat 7; the buttons 5 include a second roller 18, a housing frame 19 and a groove 20. The groove 20 is opened on the surface of the housing frame 19. The second roller 18 is located inside the groove 20. The side end of the second roller 18 is rotatably installed at the inner end of the housing frame 19. The lower end of the housing frame 19 is slidably inserted and installed at the inner end of the body 15. The upper end of the second roller 18 supports on the outer wall of the dust-proof cover 6; the second roller 18 is used to reduce the friction between the buttons 5 and the dust-proof cover 6;The dust cover 6 includes a transparent pressing plate 23, a second elastic piece 27, a clamping block 28, a binding groove 29, and a fixing sleeve 30. The side wall of the transparent pressing plate 23 is in sliding contact with the body 15. The side end of the transparent pressing plate 23 is fixedly connected to the fixing sleeve 30 as a whole. The lower end of the second elastic piece 27 is fixedly inserted and installed at the inner end of the body 15. The outer wall of the second elastic piece 27 is in sliding contact with the outer wall of the fixing sleeve 30. The clamping block 28 is fixedly connected to the inner end of the binding groove 29. The clamping block 28 is buckled and installed with the swivel base 7. The binding groove 29 is opened at the inner end of the fixing sleeve 30. The swivel base 7 is inserted and installed at the inner end of the binding groove 29. Since the transparent pressing plate 23 is made of a transparent material, it is convenient for the user to observe the inside of the dust cover 6 through the transparent pressing plate 23, and the elastic force of the installation groove 17 is used to assist the fixing sleeve 30 to stand up and recover. The swivel base 7 includes an insertion block 31, a rotating shaft 32, and a clamping groove 33. The clamping groove 33 is opened on the outer wall of the lower end of the insertion block 31. The clamping block 28 is buckled and installed at the inner end of the clamping groove 33. The upper end of the insertion block 31 is slidably inserted and installed at the inner end of the binding groove 29. The rotating shaft 32 is fixedly connected to the lower end of the insertion block 31. The rotating shaft 32 is rotatably inserted and installed at the inner end of the body 15. The insertion block 31 is rotatably installed with the body 15 through the rotating shaft 32. During use, when the user accidentally drops the device, the first roller 12 in the anti-drop main body 2 first contacts the ground. The soft characteristic of the anti-drop main body 2 is used to buffer the acting force after contacting the ground, achieving the purpose of initially protecting the device. Then, the first roller 12 is used to roll and contact the ground, so that the device rolls forward along the ground through the anti-drop main body 2, changing the direction of the acting force after impact, achieving the purpose of converting the impact kinetic energy into the moving energy along the ground. By converting the direction of the kinetic energy, the harmful shock kinetic energy is converted into harmless moving energy, and the device gradually stops due to the frictional force of rolling along the ground, achieving the purpose of protecting the device.;
[0030] The anti-drop main body 2 further includes a knob 8. The lower end of the knob 8 is fixedly connected to the upper end of the threaded rod 10 as a whole. The upper end of the bearing 9 does not contact the knob 8. The knob 8 facilitates the user to operate the threaded rod 10 to rotate with the help of an external screwdriver. When the user needs to press the button 5, first press the transparent pressing plate 23 with the hand. The transparent pressing plate 23 drives the fixing sleeve 30 to deflect. The fixing sleeve 30 overcomes the second elastic piece 27 to drive the insertion block 31 to deflect. After the transparent pressing plate 23 deflects downward, the button 5 is pressed, so that the dust cover 6 can prevent dust while not affecting the operation of the button 5, improving the practicability of the dust cover 6.
[0031] The anti-drop main body 2 further includes a spherical annular leather block 11. The spherical annular leather block 11 surrounds the outside of the bearing 9 and the threaded rod 10. The lower end of the spherical annular leather block 11 is fixedly connected to the upper end of the first roller 12 as a whole. When the spherical annular leather block 11 first contacts the ground, due to the soft characteristics of the spherical annular leather block 11, the acting force is buffered in advance. The spherical annular leather block 11 is used to increase the buffering range of the anti-drop main body 2, preventing the upper end of the first roller 12 from directly contacting the ground, achieving the purpose of protecting the first roller 12. The bearing 9 is used to reduce the rotation resistance of the first roller 12, thereby improving the steering efficiency of the first roller 12, and further achieving the purpose of protecting the device.
[0032] The shearer remote control 3 further includes a retaining rod 16. There are three retaining rods 16. The lower end of the retaining rod 16 is fixedly connected to the inner end of the machine body 15 as a whole. The dust-proof cover 6 is in sliding and sealed contact with the retaining rod 16. By using the retaining rod 16 to block the gap of the dust-proof cover 6, it prevents dust from bypassing the dust-proof cover 6 and entering the inside of the machine body 15, improving the sealing performance of the dust-proof cover 6, and further improving the dust-proof ability of the machine body 15 device.
[0033] The dust-proof cover 6 further includes a leather block 24. The leather block 24 is fixedly connected to the side end of the transparent pressing plate 23. The dust-proof cover 6 is pressed together with the dust-proof cover 6 through the leather block 24. The way that the dust-proof cover 6 is pressed together with the dust-proof cover 6 through the leather block 24 enables the transparent pressing plate 23 to deflect downward by means of an external force and can recover upward. At the same time, the gap between the transparent pressing plates 23 can be sealed through the leather block 24, thereby achieving the purpose of completely sealing the upper space of the machine body 15 and enabling normal operation of the button 5, improving the protection ability of the machine body 15.
[0034] The button 5 further includes a rotating shaft seat 21. There is a pair of rotating shaft seats 21. The lower end of the rotating shaft seat 21 is fixedly connected to the shell frame 19 as a whole. The side end of the second roller 18 is rotatably installed on the inner side end of the rotating shaft seat 21. The rotating shaft seat 21 facilitates the rotational installation of the second roller 18 and the shell frame 19 together.
[0035] The dust-proof cover 6 further includes a transparent convex block 22. The lower end of the transparent convex block 22 is fixedly connected to the upper end of the transparent pressing plate 23 as a whole. By the way that the transparent convex block 22 protrudes upward, it is convenient for the user to touch and position the finger, thereby improving the accuracy of the pressing position.
[0036] The dust-proof cover 6 further includes a first elastic piece 25. One end of the first elastic piece 25 is fixedly connected to the side end of the fixed sleeve 30. The upper wall of the first elastic piece 25 is in sliding contact with the lower wall of the transparent pressing plate 23. By using the gap between the first elastic piece 25 and the transparent pressing plate 23 to place an external label and observing the label through the transparent pressing plate 23 and pressing, it is convenient for the user to press the dust-proof cover 6 corresponding to the label.
[0037] The dust cover 6 further includes a handle 26, and the handle 26 is fixedly connected to the outer end of the lower part of the fixed sleeve 30; by means of the handle 26, it is convenient for the user to apply rotational force, and pulling the handle 26 outwards drives the lower part of the fixed sleeve 30 to deform outwards, so that the clamping block 28 can leave the clamping groove 33, thus facilitating the disassembly of the dust cover 6.
[0038] Working principle: During use, when the user accidentally drops the device, the first roller 12 in the anti-fall main body 2 is used to contact the ground first, and the soft characteristics of the anti-fall main body 2 are used to buffer the acting force after contacting the ground, so as to achieve the purpose of initially protecting the device. Then, by means of the rolling contact mode between the first roller 12 and the ground, the device rolls forward along the ground through the anti-fall main body 2, changing the direction of the acting force after impact, so as to achieve the purpose of converting the impact kinetic energy into the energy of moving along the ground. By converting the direction of kinetic energy, the harmful shock kinetic energy is converted into harmless moving energy, and the device gradually stops due to the friction force when rolling along the ground, achieving the purpose of protecting the device; when the user needs to press the button 5, first press the transparent pressing plate 23 with the hand, drive the fixed sleeve 30 to deflect through the transparent pressing plate 23, overcome the second elastic piece 27 through the fixed sleeve 30 to drive the inserting block 31 to deflect, and use the transparent pressing plate 23 to press the button 5 after deflecting downwards, so that the dust cover 6 can prevent dust while not affecting the operation of the button 5, improving the practicability of the dust cover 6; using the spherical annular leather block 11 to increase the buffering range of the anti-fall main body 2, preventing the upper end of the first roller 12 from directly contacting the ground, achieving the purpose of protecting the first roller 12, using the bearing 9 to reduce the rotation resistance of the first roller 12, thereby improving the steering efficiency of the first roller 12, and further achieving the purpose of protecting the device; using the blocking rod 16 to block the gap force of the dust cover 6, preventing dust from bypassing the dust cover 6 and entering the interior of the machine body 15, improving the sealing performance of the dust cover 6, and further improving the dust-proof ability of the machine body 15 device; the dust covers 6 are pressed together by the leather block 24, so that the transparent pressing plate 23 can deflect downwards by means of external force and can recover upwards, and at the same time can seal the gap between the transparent pressing plates 23 through the leather block 24, thereby achieving the purpose of completely sealing the upper space of the machine body 15 and being able to operate the button 5 normally, improving the dust-proof ability of the machine body 15; through the rotating shaft seat 21, it is convenient to rotatably install the second roller 18 and the housing frame 19 together; by means of the transparent convex block 22 protruding upwards, it is convenient for the user to touch and position the finger, thereby improving the accuracy of the pressing position; using the gap between the first elastic piece 25 and the transparent pressing plate 23 to place the external label, and observing the label through the transparent pressing plate 23 and pressing it is convenient for the user to press the dust cover 6 corresponding to the label; by means of the handle 26, it is convenient for the user to apply rotational force, and pulling the handle 26 outwards drives the lower part of the fixed sleeve 30 to deform outwards, so that the clamping block 28 can leave the clamping groove 33, thus facilitating the disassembly of the dust cover 6.
[0039] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can 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. An electric braking control device for a coal shearer, comprising a coal shearer remote control structure (1), the coal shearer remote control structure (1) includes a coal shearer remote control (3), the coal shearer remote control (3) includes an antenna (14) and a body (15), the body (15) is electrically connected through an external power supply, and the rear end of the antenna (14) is fixedly connected to the front end of the body (15) as a whole, characterized in that: The structure (1) of the shearer remote control further includes a fall-proof main body (2) and a dust-proof main body (4). There are four fall-proof main bodies (2), which are fixedly connected to the four corners of the outer end of the shearer remote control (3). There are eight dust-proof main bodies (4), which are symmetrically and rotatably installed at the inner end of the machine body (15). The fall-proof main body (2) is fixedly connected to the machine body (15) as a whole; the fall-proof main body (2) includes a bearing (9), a threaded rod (10), a first roller (12) and a mounting seat (13). The bearing (9) is rotatably installed at the upper end of the threaded rod (10). The threaded rod (10) passes through the bearing (9). The lower end of the threaded rod (10) is fixedly installed at the inner end of the mounting seat (13) by threads. The inner end of the first roller (12) is fixedly connected to the outer end of the bearing (9). The mounting seat (13) is fixedly connected to the machine body (15) as a whole; the shearer remote control (3) further includes buttons (5). There are eight buttons (5), which are slidably and fittedly installed at the inner end of the machine body (15); the dust-proof main body (4) includes a dust-proof cover (6) and a rotating seat (7). The dust-proof cover (6) is snap-fitted to the outer end of the rotating seat (7). The rotating seat (7) is rotatably installed at the inner end of the machine body (15). The dust-proof cover (6) is in sliding contact with the inner side wall of the machine body (15). The dust-proof cover (6) covers the outside of the button (5). The lower wall of the dust-proof cover (6) is in rolling contact with the button (5); the button (5) includes a second roller (18), a housing frame (19) and a groove (20). The groove (20) is opened on the surface of the housing frame (19). The second roller (18) is located inside the groove (20). The side end of the second roller (18) is rotatably installed at the inner end of the housing frame (19). The lower end of the housing frame (19) is slidably inserted and installed at the inner end of the machine body (15). The upper end of the second roller (18) supports against the outer wall of the dust-proof cover (6); the dust-proof cover (6) includes a transparent pressing plate (23), a second elastic piece (27), a clamping block (28), a binding groove (29) and a fixing sleeve (30). The side wall of the transparent pressing plate (23) is in sliding contact with the machine body (15). The side end of the transparent pressing plate (23) is fixedly connected to the fixing sleeve (30) as a whole. The lower end of the second elastic piece (27) is fixedly inserted and installed at the inner end of the machine body (15). The outer wall of the second elastic piece (27) is in sliding contact with the outer wall of the fixing sleeve (30). The clamping block (28) is fixedly connected to the inner end of the binding groove (29). The clamping block (28) is snap-fitted to the rotating seat (7). The binding groove (29) is opened at the inner end of the fixing sleeve (30). The rotating seat (7) is inserted and installed at the inner end of the binding groove (29);The transposon (7) includes an insertion block (31), a rotating shaft (32) and a clamping groove (33). The clamping groove (33) is formed in the outer wall of the lower end of the insertion block (31). The clamping block (28) is snap-fitted and installed at the inner end of the clamping groove (33). The upper end of the insertion block (31) is slidably inserted and installed at the inner end of the restraint groove (29). The rotating shaft (32) is fixedly connected to the lower end of the insertion block (31). The rotating shaft (32) is rotatably inserted and installed at the inner end of the machine body (15).; 2. The electric braking control device for a coal shearer according to claim 1, characterized in that: The anti-drop main body (2) further includes a knob (8). The lower end of the knob (8) is fixedly connected to the upper end of the threaded rod (10) integrally, and the upper end of the bearing (9) does not contact the knob (8).
3. The electric braking control device for a coal shearer according to claim 1, characterized in that: The anti-drop main body (2) further includes a spherical annular leather block (11). The spherical annular leather block (11) surrounds the outer sides of the bearing (9) and the threaded rod (10), and the lower end of the spherical annular leather block (11) is fixedly connected to the upper end of the first roller (12) integrally.
4. An electric braking control device for a coal shearer according to claim 1, characterized in that: The shearer remote control (3) further includes a retaining rod (16). There are three retaining rods (16). The lower ends of the retaining rods (16) are fixedly connected to the inner ends of the machine body (15) integrally, and the dust-proof cover (6) is in sliding and sealed contact with the retaining rods (16).
5. The electric braking control device for a coal shearer according to claim 1, characterized in that: The dust-proof cover (6) further includes a leather block (24). The leather block (24) is fixedly connected to the side end of the transparent pressing plate (23), and the dust-proof cover (6) is pressed together with the dust-proof cover (6) through the leather block (24).
6. The electric braking control device for a coal shearer according to claim 1, characterized in that: The button (5) further includes a rotating shaft seat (21). There is a pair of rotating shaft seats (21). The lower ends of the rotating shaft seats (21) are fixedly connected to the shell frame (19) integrally, and the side end of the second roller (18) is rotatably installed at the inner side end of the rotating shaft seat (21).
7. An electric braking control device for a shearer according to claim 1, characterized in that: The dust-proof cover (6) further includes a transparent convex block (22). The lower end of the transparent convex block (22) is fixedly connected to the upper end of the transparent pressing plate (23) integrally.
8. The electric braking control device for a coal shearer according to claim 1, characterized in that: The dust-proof cover (6) further includes a first elastic sheet (25). One end of the first elastic sheet (25) is fixedly connected to the side end of the fixed sleeve (30), and the upper wall of the first elastic sheet (25) is in sliding contact with the lower wall of the transparent pressing plate (23).
9. The electric braking control device for a shearer according to claim 1, characterized in that: The dust-proof cover (6) further includes a handle (26). The handle (26) is fixedly connected to the outer lower end of the fixed sleeve (30).
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