CN115654039A - Braking device for walking mechanism of coal mine crawler heading machine - Google Patents
Braking device for walking mechanism of coal mine crawler heading machine Download PDFInfo
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- CN115654039A CN115654039A CN202211249333.9A CN202211249333A CN115654039A CN 115654039 A CN115654039 A CN 115654039A CN 202211249333 A CN202211249333 A CN 202211249333A CN 115654039 A CN115654039 A CN 115654039A
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Abstract
The invention discloses a braking device for a walking mechanism of a coal mine crawler excavator, which comprises a caliper shell, a hydraulic device, a piston inner cylinder, a brake block, a supporting shaft and a brake disc, wherein an air storage hole is formed in the brake block, a sealing film is sealed at the port of the air storage hole, the caliper shell is fixedly provided with the supporting shaft, a transmission shaft, a gear, a spring and a brush are arranged on the supporting shaft, inner teeth are arranged on two sides of the brake disc, the inner teeth are meshed with the gear, and a plurality of air vents are axially formed in the brake disc. According to the braking device for the walking mechanism of the crawler-type roadheader for the coal mine, the braking disc is scrubbed through the hairbrush, so that the abrasion of dust particles on the surface of the braking disc during braking is avoided; the purpose that dust particles on the brush are vibrated and shaken to fall off is achieved by expanding and contracting the sealing film to vibrate the supporting shaft; the wet brush absorbs a large amount of friction heat, so that the purpose of quickly reducing the temperature of the brake disc is achieved.
Description
Technical Field
The invention belongs to the technical field of disc brakes, and particularly relates to a braking device for a walking mechanism of a coal mine crawler heading machine.
Background
The development machine is a machine for cutting a roadway on a flat ground, and has a plurality of types: dividing the operation objects into a common machine and a tunnel boring machine; the operation modes are divided into an open type tunneling machine and a shield type tunneling machine. In the coal mine excavation process, almost all the ordinary type of track heading machines are adopted, most of braking devices of the traveling mechanisms of the existing track heading machines adopt disc brakes, and the disc brakes compress brake blocks and brake discs through hydraulic devices to enable the brake discs and the brake blocks to generate enough friction force so as to achieve the purpose of braking.
When the development machine works in a coal mine, the coal mine mining environment is poor, larger dust particles can be generated during mining, when the development machine needs to be braked, as more dust particles are generated on the surface of a brake disc, when a hydraulic mechanism pushes a brake block to press the brake disc tightly, the dust particles between the brake block and the brake disc can abrade the surface of the brake disc, the braking effect is influenced, the development machine cannot be braked in time, and safety accidents can be caused; in braking process, brake block and brake disc friction produce and increase the heat, lead to the brake disc high temperature, and the brake disc keeps too high temperature for a long time, may influence the braking effect of brake disc, or brake disc high temperature arouses dust explosion etc. seriously influences production safety.
Disclosure of Invention
Aiming at the defects of the disc brake of the existing crawler excavator in the background technology in the using process, the invention provides the brake device for the walking mechanism of the crawler excavator for the coal mine, which has the advantages of automatically scrubbing dust particles on the surface of a brake disc and quickly reducing the temperature of the brake disc, and solves the technical problems in the background technology.
The invention provides the following technical scheme: the utility model provides a colliery track entry driving machine arresting gear for running gear, includes calliper casing, hydraulic means, piston inner tube, brake pads, back shaft and brake disc, piston inner tube terminal surface fixed mounting has the brake pads, three gas storage holes have been seted up to axial direction in the brake pads, a gas storage hole has been seted up to radial direction in the brake pads, just radial gas storage hole communicates with each other with three axial gas storage holes, the embedded sealed gas storage hole port of sealed membrane that has of gas storage hole port department, calliper casing both ends are located hydraulic means side fixed mounting and have the back shaft, the smooth slidable mounting of long keyway has the transmission shaft has been seted up to the back shaft axial, in the radial gas storage hole of brake pads is arranged in to transmission shaft one end, the other pot head of back shaft is equipped with the gear, a set of spring is fixed mounting as the center to a side end face of gear, the other end fixed mounting of spring has the brush, the brake disc is hugged closely to the brush, the brake disc both sides are equipped with the four sections respectively, internal tooth and gear engagement, a plurality of air vents have been seted up to the brake disc axial.
Furthermore, the transmission shaft is positioned at the end of the radial air storage hole of the brake block and clings to the sealing film.
Further, the diameter of the vent hole is larger than that of the air storage hole, and the position of the vent hole is matched with that of the air storage hole.
Further, the distance between the axis of the hairbrush and the axis of the brake disc is the same as the distance between the axis of the brake block and the axis of the brake disc.
Has the advantages that:
1. according to the invention, by the mode that the inner teeth are arranged on the brake disc, and the support shaft, the transmission gear and the hairbrush are arranged on the caliper, when the brake disc rotates along with the transmission shaft, the hairbrush on the caliper brushes the surface of the brake disc, so that the purpose of cleaning dust particles on the surface of the brake disc is achieved, and the phenomenon that the dust particles abrade the surface of the brake disc during braking, influence on the braking effect and cause safety accidents is avoided; when the brake disc rotates along with the transmission shaft, the inner teeth on the brake disc drive the transmission gear to rotate, and the transmission gear drives the brush to rotate, so that the phenomenon that the brake disc is not cleaned cleanly due to the fact that the same part of the brush brushes the brake disc for a long time is avoided.
2. According to the invention, through the mode that the air storage hole is formed in the brake block, the sealing film is embedded in the air storage hole, the transmission shaft is fixedly arranged on the supporting shaft, and the spring is fixedly arranged between the transmission gear and the hairbrush, when the heading machine runs, gas flows when the brake disc rotates, so that the sealing film on the surface of the brake block is circularly contracted and expanded, the gas in the air storage hole pushes the sealing film on the inner side of the brake block to impact the transmission rod, the transmission rod impacts the supporting shaft, so that the supporting shaft drives the hairbrush to vibrate, and the purpose that dust particles on the hairbrush are shaken and dropped is achieved; and the spring between the transmission gear and the brush increases the vibration amplitude of the brush, so that dust particles on the brush are shaken and fall off.
3. According to the invention, in the braking process, the braking block and the braking disc generate a large amount of heat through friction, and the brush is in a wet state due to the damp underground environment, so that the heat generated by the braking disc can dry the brush, and dust particles on the brush can fall off more easily; and moist brush absorbs a large amount of heats, makes the brake disc temperature reduce fast, has avoided because of the brake disc high temperature, influences the braking effect of brake disc, or arouses the dangerous emergence of dust explosion.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of a portion of the structure A of FIG. 1;
FIG. 3 is a side view of the present invention;
FIG. 4 is a schematic view of the brake pad and the cleaning device of the present invention.
In the figure: 1. a caliper housing; 2. a hydraulic device; 201. an inner piston cylinder; 202. a seal ring; 203. a return spring; 204. an oil inlet; 3. a brake pad; 301. an air storage hole; 302. sealing the film; 4. a support shaft; 401. a transmission rod; 5. a gear; 6. a spring; 7. a brush; 8. an axle; 9. a brake disc; 901. internal teeth; 902. and (4) a vent hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, 2, 3 and 4, the brake device for the coal mine caterpillar band heading machine traveling mechanism comprises a caliper housing 1, a hydraulic device 2, a brake block 3, a support shaft 4 and a brake disc 9, wherein the hydraulic device 2 is installed inside the caliper housing 1, the hydraulic device 2 comprises a piston inner cylinder 201, a seal ring 202, a return spring 203 and an oil inlet 204, the brake block 3 is fixedly installed on the end surface of the piston inner cylinder 201, three air storage holes 301 are formed in the brake block 3 in the axial direction, one air storage hole 301 is formed in the brake block 3 in the radial direction, the radial air storage hole 301 is communicated with the three axial air storage holes 301, a sealing film 302 is embedded in the end part of the air storage hole 301 to seal the end part of the air storage hole 301, the support shaft 4 is fixedly installed at the side position of the hydraulic device 2 at the two ends of the caliper housing 1, the long key groove is axially formed in the support shaft 4, the transmission shaft 401 is slidably mounted on the support shaft 4, the transmission shaft 401 can only axially slide on the support shaft 4, the other end of the transmission shaft 401 is arranged in the radial air storage hole 301 of the brake block 3, the gear 5 is sleeved on the other end of the support shaft 4, a group of springs 6 are fixedly mounted on one side end face of the gear 5 by taking the axis of the gear 5 as the center, the brushes 7 are fixedly mounted at the other ends of the springs 6, the brushes 7 are tightly attached to the brake disc 9, the distance between the axis of the brushes 7 and the axis of the brake disc 9 is the same as that between the axis of the brake block 3 and the axis of the brake disc 9, it is guaranteed that the part of the brake disc 9, which is scrubbed by the brushes 7, is the part of the brake block 3, four sections of inner teeth 901 are respectively arranged on two sides of the brake disc 9, the inner teeth 901 are meshed with the gear 5, each section of inner teeth drives the gear 5 to rotate by 90 degrees, and a plurality of air vents 902 are axially formed in the brake disc 9.
The transmission shaft 401 is located at the radial air storage hole 301 end of the brake block 3 and tightly attached to the sealing film 302, so that the sealing film 302 can impact the transmission shaft 401 when expanding, and the transmission shaft 401 can transmit power.
The diameter of the vent hole 902 is larger than that of the air storage hole 301, and the position of the vent hole 902 is matched with that of the air storage hole 301, so that the sealing film 302 on the air storage hole 301 can expand to enter the vent hole 902 when the brake disc 9 rotates.
The using method of the invention is as follows:
referring to fig. 1, 2, 3 and 4, before operation, the caliper is fixedly mounted on the axle 8 and the brake disc 9 is fixedly mounted on the wheel drive shaft. When the heading machine advances or retreats, the transmission shaft drives the brake disc 9 to rotate, the fixedly installed hairbrush 7 brushes the surface of the brake disc 9, so that dust particles on the surface of the brake disc are brushed away, the abrasion of the dust particles on the surface of the brake disc 9 during braking is avoided, and the friction braking effect of the brake block 3 and the brake disc 9 is ensured; and when the brake disc 9 rotates, the internal teeth 901 on the brake disc 9 drive the gear 5 to rotate, the gear 5 drives the brush 7 to rotate, and the brush 7 rotates, so that the phenomenon that the surface of the brake disc 9 is not cleaned cleanly due to the fact that the same part of the brush 7 brushes the surface of the brake disc 9 for a long time is avoided.
During braking, due to manual control, hydraulic oil enters the caliper housing 1 from the oil inlet 204, the hydraulic oil pushes the piston inner cylinders 201 on the two sides of the caliper and the brake pad 3 to move in opposite directions until the brake pad 3 presses the brake disc 9, at the moment, the brake disc 9 is in a rotating state, the air flow is caused to flow at the port of the air storage hole 301 of the brake pad 3 and due to the rotation of the brake disc 9, the air pressure is reduced, the embedded sealing membrane 302 at the port of the air storage hole 301 is driven to expand by negative pressure, when the port of the air storage hole 301 passes through the air vent 902 of the brake disc 9, the air pressure of the air vent 902 of the brake disc 9 is changed into atmospheric pressure, the embedded sealing membrane 302 at the port of the air storage hole 301 is returned to the air storage hole 301 by the atmospheric pressure, the sealing membrane 302 contracts to push the air in the air storage hole 301, so that the sealing membrane 302 in the axial air storage hole 301 expands, and the expanded sealing membrane 302 pushes the transmission rod 401 to move; in the braking process, the sealing film 302 expands and contracts for multiple times, and the transmission rod 401 is impacted for multiple times, so that the supporting shaft 4 vibrates, the effect of vibrating the gear 5, the spring 6 and the hairbrush 7 on the supporting shaft 4 is achieved, finally, the dust particles on the hairbrush 7 are shaken and fall off, the spring 6 plays a role in increasing the vibration effect, and the dust particles on the hairbrush 7 are washed away more easily.
Because the brake block 4 and the brake disc 9 are in friction braking during braking, a large amount of heat is generated during braking, the brake disc 9 can keep high temperature, and because the mine is in a humid environment, the humid brush 7 and the brake disc 9 are kept in a contact state, the humid brush 7 absorbs a large amount of heat, so that the brake disc 9 can be rapidly cooled, and the brake effect of the brake disc 9 cannot be influenced due to long-time overhigh temperature; and the high temperature of the brake disc 9 has a drying effect on the brush 7, so that dust particles on the brush 7 are more easily shaken and fall off.
Claims (4)
1. The utility model provides a colliery track entry driving machine arresting gear for running gear, includes calliper casing (1), hydraulic means (2), piston inner tube (201), brake pads (3), back shaft (4) and brake disc (9), its characterized in that: piston inner tube (201) terminal surface fixed mounting has brake pads (3), three gas storage hole (301) have been seted up to axial direction in brake pads (3), one gas storage hole (301) have been seted up to radial direction in brake pads (3), just radial gas storage hole (301) communicate with each other with three axial gas storage hole (301), gas storage hole (301) port department is embedded to have sealed membrane (302) sealed gas storage hole (301) port, calliper casing (1) both ends are located hydraulic means (2) side fixed mounting and have back shaft (4), long keyway slidable mounting has been seted up to back shaft (4) axial has transmission shaft (401), transmission shaft (401) other end is arranged in radial gas storage hole (301) of brake pads (3), and the other end cover of back shaft (4) is equipped with gear (5), a side end of gear (5) uses gear (5) axle center fixed mounting to have a set of spring (6), the other end fixed mounting of spring (6) has brush (7), internal tooth (7) hug closely brake disc (9), brake disc (9) both sides are equipped with four sections (901) respectively, gear (901) and gear (5) meshing, brake disc (902) have seted up axial air vent.
2. The braking device for the walking mechanism of the crawler belt heading machine for the coal mine according to claim 1, characterized in that: the transmission shaft (401) is positioned at the end of the radial air storage hole (301) of the brake block (3) and clings to the sealing film (302).
3. The braking device for the walking mechanism of the crawler belt heading machine for the coal mine according to claim 1, characterized in that: the diameter of the vent hole (902) is larger than that of the air storage hole (301), and the position of the vent hole (902) is matched with that of the air storage hole (301).
4. The braking device for the travelling mechanism of the crawler-type roadheader for the coal mine according to claim 1, is characterized in that: the distance between the axis of the brush (7) and the axis of the brake disc (9) is the same as the distance between the axis of the brake block (3) and the axis of the brake disc (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211249333.9A CN115654039A (en) | 2022-10-12 | 2022-10-12 | Braking device for walking mechanism of coal mine crawler heading machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211249333.9A CN115654039A (en) | 2022-10-12 | 2022-10-12 | Braking device for walking mechanism of coal mine crawler heading machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115654039A true CN115654039A (en) | 2023-01-31 |
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ID=84987406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211249333.9A Pending CN115654039A (en) | 2022-10-12 | 2022-10-12 | Braking device for walking mechanism of coal mine crawler heading machine |
Country Status (1)
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|---|---|
| CN (1) | CN115654039A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117072593A (en) * | 2023-10-16 | 2023-11-17 | 浙江三京汽配制造有限公司 | Automobile brake disc with heat dissipation function |
| CN117145892A (en) * | 2023-10-25 | 2023-12-01 | 福州堂莹机械有限公司 | Air-compressing disc brake easy to replace brake plate |
-
2022
- 2022-10-12 CN CN202211249333.9A patent/CN115654039A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117072593A (en) * | 2023-10-16 | 2023-11-17 | 浙江三京汽配制造有限公司 | Automobile brake disc with heat dissipation function |
| CN117072593B (en) * | 2023-10-16 | 2024-02-09 | 浙江三京汽配制造有限公司 | Automobile brake disc with heat dissipation function |
| CN117145892A (en) * | 2023-10-25 | 2023-12-01 | 福州堂莹机械有限公司 | Air-compressing disc brake easy to replace brake plate |
| CN117145892B (en) * | 2023-10-25 | 2024-01-23 | 福州堂莹机械有限公司 | Air-compressing disc brake easy to replace brake plate |
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