CN116857308A - Brake, control system and operation machinery - Google Patents
Brake, control system and operation machinery Download PDFInfo
- Publication number
- CN116857308A CN116857308A CN202310838892.1A CN202310838892A CN116857308A CN 116857308 A CN116857308 A CN 116857308A CN 202310838892 A CN202310838892 A CN 202310838892A CN 116857308 A CN116857308 A CN 116857308A
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- China
- Prior art keywords
- brake
- piston
- friction plate
- plate group
- shell
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
- F16D66/02—Apparatus for indicating wear
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
- F16D2066/003—Position, angle or speed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2121/00—Type of actuator operation force
- F16D2121/02—Fluid pressure
- F16D2121/04—Fluid pressure acting on a piston-type actuator, e.g. for liquid pressure
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention relates to the technical field of engineering equipment, in particular to a brake, a control system and an operation machine, wherein the brake comprises a shell, a brake friction plate group, a piston, an elastic piece and a displacement sensor, and the brake friction plate group is arranged in the shell; the piston is movably arranged in the shell along the axial direction of the piston, and a pressure cavity is arranged at one side of the piston in the shell and is used for filling pressure medium; the elastic piece is arranged in the shell and is abutted against one side of the piston, which is far away from the pressure cavity, the elastic piece or the pressure medium can drive the piston to move towards the brake friction plate group and press the brake friction plate group so as to realize braking, and the pressure medium or the elastic piece can drive the piston to move towards the direction, which is far away from the brake friction plate group, so that the braking is released; the displacement sensor is arranged on the shell, and the detection end of the displacement sensor is abutted to the piston and used for detecting position data of the piston. The invention can slow down the abrasion of the friction plate, ensure the underground safe operation and avoid wasting resources and time.
Description
Technical Field
The invention relates to the technical field of engineering equipment, in particular to a brake, a control system and a working machine.
Background
Work machines, such as coal mining machines, may be used to perform undulating coal seam operations downhole, with the work machine brakes used to reduce or stop the travel speed of the work machine.
In the related art, in order to avoid the brake function failure caused by excessive abrasion of the friction plate, the friction plate needs to be replaced regularly, but the time for replacing the friction plate cannot be accurately determined, so that the resource and time waste are easily caused, and if the operation is performed under the condition of the brake function failure, the slope sliding easily occurs, so that the underground safety operation is influenced.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art or related art.
Therefore, the invention provides the brake which can slow down the abrasion of the friction plate and accurately determine the time for replacing the friction plate, thereby ensuring the underground safe operation and avoiding the waste of resources and time.
The invention also provides a control system for controlling the brake.
The invention also provides a working machine comprising the brake.
According to an embodiment of the first aspect of the present invention, a brake includes:
a housing;
the braking friction plate group is arranged in the shell;
the piston is movably arranged in the shell along the axial direction of the piston, a pressure cavity is arranged at one side of the piston in the shell, and the pressure cavity is used for filling pressure medium;
the elastic piece is arranged in the shell and is abutted against one side, away from the pressure cavity, of the piston, the elastic piece or the pressure medium can drive the piston to move towards the brake friction plate group and press the brake friction plate group so as to realize braking, and the pressure medium or the elastic piece can drive the piston to move towards the direction away from the brake friction plate group so as to release braking;
the displacement sensor is arranged on the shell, and the detection end of the displacement sensor is abutted to the piston and used for detecting position data of the piston.
Preferably, the brake further comprises a shaft connecting sleeve, the shaft connecting sleeve is rotatably arranged in the shell around the axial direction of the shaft connecting sleeve and used for connecting an output shaft, and the brake friction plate group brakes the shaft connecting sleeve when being pressed.
Preferably, the brake friction plate group comprises at least one static friction plate and at least one dynamic friction plate, wherein the static friction plate is connected to the inner wall of the shell, the dynamic friction plate is connected to the circumferential outer wall of the shaft connecting sleeve, and the at least one static friction plate and the at least one dynamic friction plate are alternately arranged along the axial direction of the shaft connecting sleeve one by one.
Preferably, the brake further comprises a brake closing assembly provided to the housing and connected to the piston, the brake closing assembly being capable of locking the piston in a position in which the brake friction plate group is released.
Preferably, the brake closing assembly comprises a locking bolt, the locking bolt movably penetrates through the shell, the head of the locking bolt is located outside the shell, and the tail end of the locking bolt is connected with the piston in a threaded mode.
Preferably, the brake further comprises a controller, and the displacement sensor is connected to the controller in a communication manner, and the controller can calculate the actual abrasion amount of the brake friction plate group according to the position data of the piston.
Preferably, the brake further comprises a display, the display is in communication connection with the controller, the display can display the actual wear amount, and when the actual wear amount reaches a set wear amount, the display can display a replacement prompt.
Preferably, the pressure cavity is formed by enclosing the shell and the piston, and a medium inlet and a medium outlet which are respectively communicated with the pressure cavity are formed in the outer wall of the shell.
According to a second aspect of the present invention, a control system is provided for controlling the brake in the first aspect or each implementation manner thereof, the control system is in communication connection with the displacement sensor, and the control system may acquire the position data, determine whether the piston is fully opened according to the position data, and determine whether the actual wear amount of the brake friction plate set reaches a set wear amount.
A work machine according to an embodiment of the third aspect of the present invention includes a brake in the first aspect or implementations thereof.
One of the above technical solutions has at least the following advantages or beneficial effects:
in the brake according to the embodiment of the present invention, when applied to a work machine, the housing is connected to the work machine body, and the output shaft of the work machine is connected to the brake pad group. When the working machine normally runs, the brake is in a state of releasing the brake, the piston releases the brake friction plate group, and the brake friction plate group does not brake the output shaft; when braking is needed, the pressure of the pressure medium in the pressure cavity is changed, so that the piston moves towards the brake friction plate group and presses the brake friction plate group, braking of the brake friction plate group on the output shaft is realized, after braking is finished, the pressure of the pressure medium in the pressure cavity is changed, so that the piston moves towards the direction deviating from the brake friction plate group, the brake friction plate group is released, and braking of the brake friction plate group on the output shaft is released.
The displacement sensor is used for detecting the position data of the piston, and whether the piston moves to a fully opened position can be deduced according to the detected position data, so that whether the brake is fully opened or not can be accurately deduced, the brake can be guaranteed to walk after being fully opened, the walking with the brake is avoided, and the abrasion of the brake friction plate group is delayed.
The displacement sensor is used for detecting position data of the piston, can obtain actual abrasion loss of the brake friction plate group according to the position data of the piston in the primary braking state and the current braking state, compares the actual abrasion loss with the set abrasion loss, and when the actual abrasion loss reaches the set abrasion loss, the brake friction plate group needs to be replaced, and can accurately determine the time when the brake friction plate group needs to be replaced, thereby ensuring underground safety operation and avoiding wasting of resources and time. The control system provided by the embodiment of the invention is used for controlling the brake, and the control system for controlling the brake has corresponding technical effects because the brake has the technical effects.
The working machine provided by the embodiment of the invention is provided with the brake, and the working machine provided with the brake has corresponding technical effects because the brake has the technical effects.
Drawings
FIG. 1 shows a schematic view of a brake according to one embodiment of the present invention;
FIG. 2 shows a cross-sectional view in the direction A-A of FIG. 1;
fig. 3 shows an enlarged view at a in fig. 2.
[ reference numerals description ]
11. A square cover; 12. a spline housing; 13. an oil chamber housing; 14. an end cap; 15. installing a bolt; 2. a brake pad set; 21. a static friction plate; 22. a dynamic friction plate; 3. a piston; 4. an elastic member; 5. a displacement sensor; 6. a shaft connecting sleeve; 7. a locking bolt; 8. a pressure chamber.
Detailed Description
The invention will be better explained by the following detailed description of the embodiments with reference to the drawings.
It should be noted that, in the description of the present invention, the directions or positional relationships indicated by the terms "front", "rear", "left", "right", "upper", "lower", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. The terms "front", "back", "left", "right", "upper", "lower" as used in the description of the present invention refer to directions in the drawings, and the terms "inner", "outer" refer to directions toward or away from the geometric center of a particular component, respectively.
As described above, the inventors found that some of the brakes that were found to detect the oil pressure using the oil pressure sensor, and that whether the brakes were fully opened was inferred by the oil pressure, but that the oil pressure drive had a delay defect, and that when the brakes were not fully opened, the work machine had already walked, equivalent to walking with the brakes, and accelerated wear of the friction plates; moreover, in order to avoid the brake function failure caused by excessive abrasion of the friction plate, the friction plate is replaced regularly by the existing scheme, but the abrasion speed of the friction plate is different due to the unbalanced quality of the friction plate and the different road conditions of the way, so that the existing scheme cannot accurately determine the time for replacing the friction plate, if the replacement is too early, the waste of resources and time is caused, and if the replacement is too late, the operation is performed under the condition of the brake function failure, the slope sliding easily occurs, and the underground safety operation is influenced.
In order to solve at least one of the technical problems in the prior art or related art, the invention provides a brake, a control system and a working machine.
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
Referring to fig. 1-3, a brake according to one embodiment of the present disclosure may be used in a work machine, which may be, for example, a shearer, a heading machine, or other walkable equipment for mineral exploitation. The brake comprises a shell, a brake friction plate group 2, a piston 3, an elastic piece 4 and a displacement sensor 5, wherein the brake friction plate group 2 is arranged in the shell; the piston 3 is movably arranged in the shell along the axial direction of the piston, a pressure cavity 8 is arranged at one side of the piston 3 in the shell, and the pressure cavity 8 is used for filling pressure medium; the elastic piece 4 is arranged in the shell and is abutted against one side of the piston 3, which is far away from the pressure cavity 8, the elastic piece 4 or the pressure medium can drive the piston 3 to move towards the brake friction plate group 2 and press the brake friction plate group 2 so as to realize braking, and the pressure medium or the elastic piece 4 can drive the piston 3 to move towards the direction, which is far away from the brake friction plate group 2, so that the braking is relieved; the displacement sensor 5 is disposed in the housing, and a detection end thereof abuts against the piston 3, for detecting position data of the piston 3.
The detection end of the displacement sensor 5 is internally provided with a spring, so that the end head is always propped against the piston 3, and position data of the piston 3 are collected in real time.
When the embodiment is applied to a coal mining machine, the shell is connected to the main body of the coal mining machine, and the output shaft of the coal mining machine is connected to the brake friction plate group 2. When the coal mining machine normally runs, the brake is in a brake release state, the piston 3 releases the brake friction plate group 2, and the brake friction plate group 2 does not brake the output shaft; when braking is needed, the pressure of pressure medium in the pressure cavity 8 is changed, so that the piston 3 moves towards the brake friction plate group 2 and presses the brake friction plate group 2, braking of the brake friction plate group 2 on an output shaft is achieved, after braking is finished, the pressure of the pressure medium in the pressure cavity 8 is changed, so that the piston 3 moves towards the direction deviating from the brake friction plate group 2, the brake friction plate group 2 is released, and braking of the brake friction plate group 2 on the output shaft is relieved.
The displacement sensor 5 is used for detecting the position data of the piston 3, and can deduce whether the piston 3 moves to a fully opened position according to the detected position data, so that whether the brake is fully opened or not can be accurately deduced, the travel after the brake is fully opened can be ensured, the travel with the brake is avoided, and the abrasion of the brake friction plate group 2 is delayed. For example, an open position X is preset during the displacement of the piston 3 T When the piston 3 moves to X T When the piston 3 completely releases the brake pad set 2, the brake is completely released, i.e. the displacement sensor 5 detects that the position data of the piston 3 is X T When the brake is released, the piston 3 is inferred to move to the fully opened position, and the brake is fully opened at the moment, so that the brake is in a brake release state, the brake is ensured to walk after being completely released, the walking with the brake is avoided, and the abrasion of the brake friction plate group 2 is delayed.
The displacement sensor 5 is used for detecting position data of the piston 3, and is used for detecting the position of the pistonAccording to the position data of the piston 3 in the primary braking state and the secondary braking state, the actual abrasion loss of the brake friction plate group 2 can be obtained, the actual abrasion loss is compared with the set abrasion loss, when the actual abrasion loss reaches the set abrasion loss, the brake friction plate group 2 needs to be replaced, and the time of replacing the brake friction plate group 2 can be accurately determined, so that the underground safety operation is ensured, and the waste of resources and time is avoided. For example, the position data of the piston 3 in the primary braking state, the secondary braking state, …, the previous braking state, and the secondary braking state are respectively defined as X 1 、X 2 、…、X n-1 、X n Setting the abrasion loss as X P Therefore, the actual wear amount in the second braking cycle is X 2 -X 1 The actual abrasion loss in the previous braking period is X n-1 -X 1 The actual abrasion amount in the current braking period is X n -X 1 When X is n-1 -X 1 -X P < 0, and X n -X 1 -X P And when the actual abrasion loss in the secondary braking period reaches the set abrasion loss, the brake friction plate group 2 in the brake needs to be replaced.
Alternatively, the pressure medium may be a gas or a liquid.
Specifically, in the present embodiment, the pressure medium is pressure oil, that is, the brake provided in the present embodiment is a hydraulic brake.
Specifically, in the present embodiment, referring to fig. 2, the pressure chamber 8 and the brake pad group 2 are disposed on the same side of the piston 3, the elastic member 4 is disposed on the other side of the piston 3, and when the pressure in the pressure chamber 8 is small, the elastic member 4 moves against the piston 3 toward the brake pad group 2 and presses the brake pad group 2 to achieve braking; when the braking is required to be released, the pressure in the pressure cavity 8 is increased, and the pressure is greater than the elastic force of the elastic piece 4 and then the piston 3 is abutted against the piston to move in the direction away from the braking friction plate group 2 so as to release the braking.
Optionally, in other embodiments, the elastic member 4 and the brake friction plate set 2 are disposed on the same side of the piston 3, the pressure chamber 8 is disposed on the other side of the piston 3, when braking is required, the pressure in the pressure chamber 8 is increased, and the pressure of the pressure medium is pushed against the piston 3 to move towards the brake friction plate set 2 and compress the brake friction plate set 2, so as to realize braking; when the braking is required to be released, the pressure in the pressure cavity 8 is reduced, and after the pressure is smaller than the elastic force of the elastic piece 4, the elastic piece 4 abuts against the piston 3 to move towards the direction away from the braking friction plate group 2 so as to release the braking.
Specifically, the brake further comprises a shaft connecting sleeve 6, the shaft connecting sleeve 6 is rotatably arranged in the shell around the axial direction of the shaft connecting sleeve 6 and is used for connecting an output shaft, and the shaft connecting sleeve 6 is braked when the brake friction plate group 2 is pressed. The shaft connecting sleeve 6 is used for being connected with an output shaft of the coal mining machine, and the shaft connecting sleeve 6 is braked when the brake friction plate group 2 is pressed, so that the output shaft is braked.
Further specifically, the shaft connecting sleeve 6 is a spline sleeve, and the spline sleeve is convenient to realize coaxial rotation connection with the output shaft.
Specifically, the brake friction plate group 2 includes at least one static friction plate 21 and at least one dynamic friction plate 22, the static friction plate 21 is connected to the inner wall of the housing, the dynamic friction plate 22 is connected to the circumferential outer wall of the shaft connecting sleeve 6, and the at least one static friction plate 21 and the at least one dynamic friction plate 22 are alternately arranged one by one along the axial direction of the shaft connecting sleeve 6. In the non-braking state, the static friction plate 21 and the dynamic friction plate 22 are mutually loosened, and the dynamic friction plate 22 rotates relative to the static friction plate 21 along with the rotation of the shaft connecting sleeve 6, so that the smooth rotation of the output shaft is ensured. In the braking state, the piston 3 is pressed against one static friction plate 21 or one dynamic friction plate 22 positioned at the outermost side, and through the sequential transmission of the pressing force, all the static friction plates 21 and all the dynamic friction plates 22 in the braking friction plate group 2 are pressed one by one, so that the friction force between the static friction plates 21 and the dynamic friction plates 22 is increased, the dynamic friction plates 22 cannot rotate, and therefore the shaft connecting sleeve 6 cannot rotate, namely, the output shaft is braked.
Specifically, the brake further includes a controller, to which the displacement sensor 5 is communicatively connected, and which is capable of calculating an actual wear amount of the brake pad group 2 based on the position data of the piston 3. Due to the arrangement of the controller, the automatic calculation of the actual abrasion loss is realized.
The piston 3 being in the open position X each time the braking state is released T I.e. the position data of the piston 3 is X T When this is the case, it is inferred that the piston 3 is moved to the fully open position.
Because of the wear of the static friction plate 21 and the dynamic friction plate 22, the position of the piston 3 to be pressed is changed every time, in this embodiment, if the controller determines that the position data of the piston 3 remains unchanged for a set time in the process of moving the piston 3 toward the brake friction plate group 2, it is determined that the piston 3 is pressed in place, and braking is completed, and the value that remains is the position data in the braking state. For example, the set time is S t When the controller judges that the position data of the piston 3 stays at the value X n Exceeding S t Is not changed, is pressed in place, and the value X is read out n As position data at the time of the secondary braking state, the actual wear amount is calculated using the numerical value.
More specifically, the brake further comprises a display communicatively connected to the controller, the display being capable of displaying the actual amount of wear, and the display being capable of displaying a replacement prompt when the actual amount of wear reaches a set amount of wear. The display is arranged, so that a worker can conveniently and real-timely obtain the actual abrasion loss, and timely prompt the worker to replace the friction plate.
Alternatively, the elastic member 4 may be any elastic member, such as a coil spring, a disc-shaped spring piece, or the like.
In this embodiment, the elastic member 4 is preferably a disc-shaped spring piece. The disc-shaped spring piece is arranged to enable the braking moment of the brake to be larger, so that the brake is suitable for a heavy load working condition.
Specifically, the pressure chamber 8 is formed by enclosing the housing and the piston 3, and a medium inlet and a medium outlet which are respectively communicated with the pressure chamber 8 are formed in the outer wall of the housing. The medium inlet and the medium outlet are respectively used for adding and discharging pressure medium, the pressure medium is added through the medium inlet, the pressure medium in the pressure cavity 8 is increased, and the internal pressure is increased; the pressure medium is discharged through the medium outlet, the pressure medium in the pressure chamber 8 decreases, and the internal pressure decreases.
More specifically, the pressure chamber 8 is annular and concentric with the piston 3. The arrangement is such that the symmetry of the pressure medium pressing the piston 3 ensures a smooth movement of the piston 3.
Likewise, the elastic members 4 are also annularly distributed and concentric with the piston 3. The arrangement is such that the symmetry with which the elastic member 4 presses the piston 3 ensures a smooth movement of the piston 3.
Specifically, the casing includes square cover 11, spline casing 12, oil pocket casing 13 and end cover 14 that set gradually, static friction piece 21 connects in spline casing 12's inner wall, hub connection sleeve 6 and dynamic friction piece 22 set up in spline casing 12's inside cavity, piston 3 sets up in oil pocket casing 13, piston 3 and oil pocket casing 13's inner wall encloses into pressure chamber 8, medium entry and medium export are seted up in oil pocket casing 13's outer wall, first elastic component storage tank has been seted up to one side that piston 3 deviates from pressure chamber 8, the second elastic component storage tank that is involuted with first elastic component storage tank has been seted up to end cover 14's inner wall, the both ends of elastic component 4 set up respectively in first elastic component storage tank and second elastic component storage tank.
More specifically, in order to secure the tightness of the connection, seal rings are provided between the square cover 11 and the spline housing 12, between the spline housing 12 and the oil chamber housing 13, and between the oil chamber housing 13 and the piston 3.
Further, a sealing ring is arranged between the oil cavity shell 13 and the piston 3 at two sides of the pressure cavity 8, so that leakage of pressure medium in the pressure cavity 8 is avoided.
Specifically, the end cap 14 is provided with a plurality of mounting bolts 15 for connection with the shearer body.
Specifically, the brake further comprises a brake closing assembly provided to the housing and connected to the piston 3, the brake closing assembly being able to lock the piston 3 in a position releasing the brake pad set 2. The brake closing component is used for locking the position of the piston 3, the elastic piece 4 can be pressed, the static friction piece 21 and the dynamic friction piece 22 are loosened, and the output shaft of the coal mining machine runs freely, which is equivalent to closing the braking function of the brake, and the brake is not required to be disassembled when the braking function is not required to be used.
More specifically, the brake closing assembly comprises a locking bolt 7, the locking bolt 7 is movably arranged on the shell in a penetrating way, the head of the locking bolt 7 is positioned outside the shell, and the tail end of the locking bolt 7 is connected with the piston 3 in a threaded way. In this embodiment, the locking bolt 7 is movably inserted through the end cover 14, the head of the locking bolt 7 is located at the outer side of the end cover 14, and the tail end is connected to the piston 3 through threads. The locking bolt 7 can adjust the distance between the piston 3 and the end cover 14 by screwing, so that the length of the elastic piece 4 is adjusted, and the function of closing the braking function can be realized.
The brake may for some reason cause a failure during use that does not release the brake. The cause of this failure is: first, the piston cannot move to a position completely separated from the friction plate due to insufficient oil pressure or internal structure jamming, so that the brake cannot release the brake; the second type, the piston can move to the position that breaks away from the friction disc completely, but the brake of the coal mining machine is caused by high temperature and the friction disc is adhered, and can not be released smoothly, so that the brake is locked and can not be released. In the prior art, the fault that the brake cannot be released is not easy to find in time in the traveling process of the coal mining machine, the traveling wheel is easy to damage when the coal mining machine continues traveling, the fault cause cannot be judged quickly after the fault is found, and the brake is required to be detached integrally for maintenance, so that the replacement time and the replacement cost are high.
In order to solve the above-mentioned problems, the brake provided in this embodiment further includes a motion sensor for detecting whether the output shaft is in a rotating state, when the motion sensor detects that the output shaft is still in a stationary state after the brake performs a brake release operation, it is judged that the brake release operation fails, that is, the brake fails to release the brake, and then position data of the piston 3 and X are acquired by the displacement sensor 5 T In contrast, if the difference is within the allowable error range, it is inferred that the movement of the piston 3 is normal, i.e., the cause of the failure is the second cause, and if the difference is outside the allowable error range, it is inferred that the movement of the piston 3 is abnormal, i.e., the cause of the failure is the first cause, so that maintenance personnel can be assisted to the greatest extentAnd quickly determining the fault reason. Therefore, the brake provided by the embodiment can detect faults as soon as possible, can quickly determine the fault reasons, accurately determine the fault positions and improve the maintenance efficiency and the cost.
Further, in this embodiment, the motion sensor is simultaneously connected to the controller and the display in a communication manner, the controller acquires the signal detected by the motion sensor, if the output shaft is in a rotating state, the display displays the "brake release success" word, if the output shaft is still in a static state, the display displays the "brake release failure" word to perform a stop warning, and at the same time, the controller acquires the position data of the piston 3 detected by the displacement sensor 5, and the position data and X T In contrast, if the difference between the two is within the error allowable range, the cause of the failure is displayed by the display for the second reason, and if the difference between the two is beyond the error allowable range, the cause of the failure is displayed by the display for the first reason. Therefore, the brake provided by the embodiment can automatically find out faults and automatically determine the reasons of the faults. Further, the control system according to another embodiment of the present invention is configured to control the brake, where the control system is communicatively connected to the displacement sensor 5, and the control system may acquire position data, determine whether the piston 3 is fully opened according to the position data, and determine whether the actual wear amount of the brake pad set 2 reaches the set wear amount.
Because the control system provided in this embodiment controls the brake provided in any of the above embodiments, the control system may acquire position data, determine whether the piston 3 is fully opened according to the position data, and determine whether the actual wear amount of the brake friction plate group 2 reaches the set wear amount. Therefore, the control system can delay the abrasion of the brake friction plate group and accurately determine the time for replacing the brake friction plate group 2, thereby ensuring the underground safe operation and avoiding the waste of resources and time.
Further, a work machine according to still another embodiment of the present invention includes: the brake described above.
Specifically, the work machine includes a work machine body, and an output shaft, to which the brake is attached to a housing of a high-speed shaft end of a traction portion of the work machine body by a mounting bolt 15, and the output shaft is connected to a shaft connecting sleeve 6. By way of example, the work machine may be a mining machine, such as: coal mining machines, heading machines, mining dump trucks and the like.
Because the working machine provided in this embodiment has the brake provided in any one of the embodiments, the working machine has all the advantages of the brake provided in any one of the embodiments, and will not be described herein.
Since the conventional work machine is provided with the work machine control system and the work machine display system, the function of the controller in the brake can be realized by the conventional work machine control system, and the function of the display in the brake can be realized by the conventional work machine display system, thereby omitting the controller and the display in the brake.
In the description of the present invention, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium; may be a communication between two elements or an interaction between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature is "on" or "under" a second feature, which may be in direct contact with the first and second features, or in indirect contact with the first and second features via an intervening medium. Moreover, a first feature "above," "over" and "on" a second feature may be a first feature directly above or obliquely above the second feature, or simply indicate that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is level lower than the second feature.
In the description of the present specification, the terms "one embodiment," "some embodiments," "example embodiments," "examples," "specific examples," or "some examples," etc., refer to a particular feature, structure, material, or characteristic described in connection with the embodiment or example as being included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that alterations, modifications, substitutions and variations may be made in the above embodiments by those skilled in the art within the scope of the invention.
Claims (10)
1. A brake, comprising:
a housing;
a brake friction plate group (2) arranged in the housing;
the piston (3) is movably arranged in the shell along the axial direction of the piston, a pressure cavity (8) is arranged at one side of the piston (3) in the shell, and the pressure cavity (8) is used for filling pressure medium;
the elastic piece (4) is arranged in the shell and is abutted against one side, away from the pressure cavity (8), of the piston (3), the elastic piece (4) or the pressure medium can drive the piston (3) to move towards the brake friction plate group (2) and press the brake friction plate group (2) so as to realize braking, and the pressure medium or the elastic piece (4) can drive the piston (3) to move towards the direction away from the brake friction plate group (2) so as to release braking;
and the displacement sensor (5) is arranged on the shell, and the detection end of the displacement sensor is abutted against the piston (3) and is used for detecting the position data of the piston (3).
2. A brake according to claim 1, characterized in that the brake further comprises a shaft connection sleeve (6), the shaft connection sleeve (6) being rotatably arranged in the housing about its axial direction for connection to an output shaft, the brake disc stack (2) braking the shaft connection sleeve (6) when pressed.
3. Brake according to claim 2, wherein the brake disc pack (2) comprises at least one static friction disc (21) and at least one dynamic friction disc (22), the static friction disc (21) being connected to the inner wall of the housing, the dynamic friction disc (22) being connected to the circumferential outer wall of the shaft coupling sleeve (6), at least one of the static friction discs (21) and at least one of the dynamic friction discs (22) being alternately arranged one after the other in the axial direction of the shaft coupling sleeve (6).
4. Brake according to claim 1, characterized in that it further comprises a brake closing assembly provided to the housing and connected to the piston (3), which brake closing assembly can lock the piston (3) in a position releasing the set of brake discs (2).
5. Brake according to claim 4, characterized in that the brake closure assembly comprises a locking bolt (7), the locking bolt (7) being movably arranged through the housing, the head of the locking bolt (7) being located outside the housing, the tail end being screwed to the piston (3).
6. A brake according to claim 1, characterized in that the brake further comprises a controller, to which the displacement sensor (5) is communicatively connected, the controller being capable of calculating the actual wear of the brake pad set (2) on the basis of the position data of the piston (3).
7. The brake of claim 6, further comprising a display communicatively coupled to the controller, the display configured to display the actual amount of wear, the display configured to display a replacement notice when the actual amount of wear reaches a set amount of wear.
8. Brake according to any one of claims 1 to 7, characterized in that the pressure chamber (8) is formed by the housing and the piston (3) in a surrounding manner, and that the outer wall of the housing is provided with a medium inlet and a medium outlet which are respectively connected to the pressure chamber (8).
9. A control system for controlling a brake according to any one of claims 1 to 5, characterized in that the control system is in communication with the displacement sensor (5), and that the control system is adapted to acquire the position data and to determine, on the basis of the position data, whether the piston (3) is fully open and to determine whether the actual wear of the brake lining set (2) has reached a set wear.
10. A work machine, comprising:
a brake as claimed in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310838892.1A CN116857308A (en) | 2023-07-10 | 2023-07-10 | Brake, control system and operation machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310838892.1A CN116857308A (en) | 2023-07-10 | 2023-07-10 | Brake, control system and operation machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116857308A true CN116857308A (en) | 2023-10-10 |
Family
ID=88226446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310838892.1A Pending CN116857308A (en) | 2023-07-10 | 2023-07-10 | Brake, control system and operation machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116857308A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118346729A (en) * | 2024-06-20 | 2024-07-16 | 江苏科华底盘技术有限公司 | Disc brake for commercial vehicle and on-line state monitoring method thereof |
-
2023
- 2023-07-10 CN CN202310838892.1A patent/CN116857308A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118346729A (en) * | 2024-06-20 | 2024-07-16 | 江苏科华底盘技术有限公司 | Disc brake for commercial vehicle and on-line state monitoring method thereof |
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