CN112109760A - Manual mechanical relieving device and hydraulic braking clamp thereof - Google Patents
Manual mechanical relieving device and hydraulic braking clamp thereof Download PDFInfo
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- CN112109760A CN112109760A CN202010966798.0A CN202010966798A CN112109760A CN 112109760 A CN112109760 A CN 112109760A CN 202010966798 A CN202010966798 A CN 202010966798A CN 112109760 A CN112109760 A CN 112109760A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
- B61H13/00—Actuating rail vehicle brakes
- B61H13/02—Hand or other personal actuation
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Abstract
The invention provides a manual mechanical relieving device and a hydraulic brake clamp thereof. The mitigation device includes: the rotating shaft is provided with a height adjusting piece; the relieving handle is arranged at one end of the rotating shaft and is used for driving the rotating shaft to rotate; the elastic component is arranged at the other end of the rotating shaft; a power guide; one side of the lever is abutted against the power guide piece, and the other side of the lever is abutted against the elastic component and the height adjusting piece; and the lever shaft penetrates through the lever and then is installed on the clamp body, so that the lever can rotate around the lever shaft. The device simple structure, convenient operation, flexibility can carry out machinery through outside alleviating the handle and alleviate to the tong to utilize the adjustment lever to compare output power and adjust, it is not high to the space requirement. The hydraulic brake clamp comprises the device, has the functions of normal braking, relieving state, manual mechanical relieving detection and display, automatic brake pad and brake disc abrasion compensation, and is stable and reliable.
Description
Technical Field
The invention belongs to the field of railway vehicle brakes, and particularly relates to a manual mechanical relieving device and a hydraulic braking clamp thereof.
Background
The hydraulic brake system plays an important role in the brake system of rail transit, the hydraulic brake clamp is a main actuating mechanism in the hydraulic brake system, and the passive clamp has the function of automatically compensating the clearance of the brake pad and can ensure the stability of output force, so that the passive clamp is widely applied. At present, the judgment of the brake application and release states of passive hydraulic brake clamps in the market is carried out by collecting the oil pressure in a pipeline by taking the input oil pressure as a feedback quantity; when the oil pressure reaches the rated pressure value, the brake clamp is judged to be released, and when the oil pressure is smaller than the rated pressure, the clamp brake is displayed. However, the method cannot ensure whether the mechanical structure of the clamp is really braked or released in place, and there is a possibility that mechanical clamping stagnation causes the clamp to be unbraked or not released, but the situation that the oil pressure is completely normal is displayed.
In addition, according to the principle of fault-oriented safety, the passive brake clamp is provided with a manual release structure during design, so that the clamp can be released in the case of vehicle pulling or emergency, and the vehicle is released from the braking state. However, most of the hydraulic brakes are used in low-floor vehicles or structures with high space requirements, the clamp is positioned on a bogie or a gearbox, when mechanical relieving operation is carried out by people, the space is small, so that the clamp is difficult to relieve mechanically, or no manual relieving space is provided at all, and therefore the external mechanical relieving structure also needs to be optimized further.
Disclosure of Invention
The invention provides a manual mechanical relieving device and a hydraulic brake clamp thereof aiming at the technical problems of the passive hydraulic clamp in the prior art, wherein the manual mechanical relieving device has a simple structure and is convenient to operate, and the requirements of light rail low-floor vehicles are met; the clamp has the functions of common braking, alleviation state detection and manual mechanical alleviation detection, and effectively ensures the safety of a hydraulic braking system.
In order to achieve the above object, the present invention provides a manual mechanical release device for mechanical release of a hydraulic brake caliper, comprising:
the rotating shaft is provided with a height adjusting piece;
the relieving handle is arranged at one end of the rotating shaft;
the elastic component is arranged at the other end of the rotating shaft;
a power guide;
and one side of the lever abuts against the power guide piece, and the other side of the lever abuts against the elastic component and the height adjusting piece.
Preferably, the height adjusting piece is a cam, the rotating shaft penetrates through the cam and is fixedly connected with the cam, and the other side of the lever abuts against the elastic component and the cam surface of the cam.
Preferably, the support protection piece is further included, and the support protection piece is penetrated by the rotating shaft.
Preferably, the manual mechanical mitigation device further comprises a guard, the guard further comprising:
the rotating shaft protection piece is sleeved on the rotating shaft and is connected with the supporting protection piece;
an elastic protector disposed between the elastic assembly and the lever.
The invention also provides a hydraulic brake clamp, which comprises the manual mechanical relieving device and further comprises:
in the manual mechanical relieving device, the power guide part is internally provided with the power cavity and the conical surface cavity;
the power guide piece is arranged in the transmission channel, and the lever shaft and the support protection piece are arranged on the inner caliper body;
the power assembly is arranged in the power cavity and acts on the power guide piece;
the transmission assembly is axially arranged in the conical cavity and is in sliding connection with the inner clamp body, and the transmission assembly is connected with the power assembly through a power guide piece;
the brake pad component is arranged on the inner caliper body.
Preferably, the brake pad assembly is arranged on the inner caliper body; the brake lining component comprises a first brake lining, a second brake lining, a first brake lining subplate and a second brake lining subplate, wherein the first brake lining and the second brake lining are respectively arranged on the first brake lining subplate and the second brake lining subplate.
Preferably, the transmission assembly further comprises:
the first transmission piece is axially arranged in the transmission channel and is in sliding connection with the inner clamp body, the first transmission piece is provided with a convex cone part, one end of the first transmission piece, which is close to the convex cone part, penetrates through the power guide piece, and the convex cone part is in contact with the conical cavity;
the second transmission piece is in threaded connection with the other end of the first transmission piece;
one end of the third transmission piece is in threaded connection with the second transmission piece, and the other end of the third transmission piece can be in contact with the first brake pad auxiliary plate through the key groove;
the first elastic piece is sleeved on the first transmission piece and arranged between the convex cone part and the second transmission piece.
Preferably, a piston rod seal assembly is further included, the piston rod seal assembly comprising:
the first piston rod sealing element is sleeved on the outer side of the power cavity of the power guide element;
and the second piston rod sealing element is sleeved on the outer side of the conical cavity of the power guide element, and an oil cavity is formed between the second piston rod sealing element and the first piston rod sealing element.
Preferably, the system further comprises a common state detection component, wherein the common state detection component comprises:
one end side of the bent rod is connected with the power guide part and moves synchronously with the power guide part;
a magnet provided on the other end side of the bent rod;
the switch support is connected to the bent rod through a fixed shaft;
the magnetic switch is arranged on the switch support.
Preferably, the magnetic switch is of a single-pole double-throw type, and is used for controlling different end points to be connected according to the change of the relative position of the magnetic switch and the magnet, and outputting a corresponding level signal, and a network system of the vehicle collects the level signal and transmits the level signal to a driver screen to display corresponding state information.
Preferably, when the magnet moves to the triggering range of the first fixed end of the magnetic switch, the movable end of the magnetic switch is connected with the first fixed end, a high-level signal is output, and a normal brake application state is displayed;
when the magnet moves to the triggering range of the second immovable end of the magnetic switch, the movable end of the magnetic switch is communicated with the second immovable end, a low-level signal is output, and a normal braking relieving state is displayed.
Preferably, further comprising a mechanical mitigation detection assembly, the mechanical mitigation detection assembly comprising:
the switch mounting seat is arranged on the inner clamp body;
the limit switch is positioned on the switch mounting seat;
the magnetic conductor, the magnetic conductor with the coaxial setting of pivot, magnetic conductor one end is installed on the altitude mixture control spare, the other end can contact with limit switch.
Preferably, the device further comprises a stop assembly, the stop assembly comprising:
the stopping part is connected with the power assembly;
the limiting part is connected with the stopping part through a bolt.
Preferably, the fixing device further comprises a fixed stop member, wherein a first elastic support member is fixedly connected to the fixed stop member, and the first elastic support member is used for supporting the first elastic member.
Preferably, a second elastic supporting part is arranged on the inner caliper body, a second elastic part is arranged on the second elastic supporting part, and two ends of the second elastic part are respectively connected with the first brake pad auxiliary plate and the second brake pad auxiliary plate and used for resetting a gap between the brake pad and the brake disc.
Preferably, the hydraulic brake caliper further comprises an outer caliper body, the inner caliper body is mounted on the outer caliper body through a support shaft, and the outer caliper body is fixed on the vehicle body through a mounting bolt.
Compared with the prior art, the invention has the advantages and positive effects that:
1. the manual mechanical relieving device is simple in structure, convenient and flexible to operate and low in requirement on space, and the clamp can be relieved mechanically through an external relieving handle, so that a person can operate the mechanical relieving device outside the vehicle body;
2. the device adjusts the relieving force through a lever structure, and adjusts the output force by utilizing the adjusting lever, so that the output force is conveniently optimized under the condition of space allowance;
3. the height adjusting piece of the device adopts a cam structure, the change curve of a cam plane can be properly adjusted according to requirements, and the relieving force is optimized;
4. the hydraulic brake clamp provided by the invention can directly reflect the applied and relieved states of the common brake, really reflects whether the applied brake force is in place or not, avoids the phenomenon that the unrelieved state caused by clamping stagnation of the mechanical structure of the clamp cannot be judged, and is stable and reliable;
5. the hydraulic brake clamp is provided with a mechanical release detection assembly, and outputs a mechanical release signal, so that an operator can see the signal through a screen, and the hydraulic brake clamp is convenient to use;
6. the clamp is designed to float, has an integrated structure, is compact to install and occupies a small space.
Drawings
FIG. 1 is a schematic structural diagram of a manual mechanical mitigation device in accordance with an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a rotating shaft according to an embodiment of the present invention;
FIG. 3 is a trend graph of the cam surface height of the cam of the embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a lever according to an embodiment of the present invention;
FIG. 5 is a left side view of a clamp according to an embodiment of the present invention;
FIG. 6 is a front view of a clamp according to an embodiment of the present invention;
FIG. 7 is a top view of a clamp according to an embodiment of the present invention;
FIG. 8 is a cross-sectional view taken along line B-B of FIG. 7 in accordance with an embodiment of the present invention;
FIG. 9 is a cross-sectional view C-C of FIG. 7 in accordance with an embodiment of the present invention;
FIG. 10 is a partial view of the internal structure of a clamp according to an embodiment of the present invention;
FIG. 11 is a schematic structural view of a general status detection assembly of the clamp according to an embodiment of the present invention;
FIG. 12 is a schematic diagram of the operation of a clamp magnetic switch in accordance with an embodiment of the present invention;
FIG. 13 is a schematic structural view of a mechanical mitigation detection assembly of an embodiment of the present invention;
wherein: 1. a manual mechanical mitigation device; 11. a rotating shaft; 12. a height adjustment member; 121. a cam surface; 13. a relief handle; 14. an elastic component; 15. a power guide; 16. a lever; 17. a lever shaft; 18. supporting a protective member; 19. a shaft guard; 20. an elastic protection member; 2. an inner caliper body; 201. a dust-proof member; 202. a transmission protection member; 203. a limiting member; 204. a needle bearing; 205. a bearing spacer; 206. a retainer ring; 207. a conical surface supporting seat; 21. a second elastic support member; 22. a second elastic member; 23. a second elastic guide; 24. a brake pad baffle; 3. a power assembly; 31. a power protection member; 4. a transmission assembly; 41. a first transmission member; 411. a convex cone portion; 42. a second transmission member; 43. a third transmission member; 44. a first elastic member; 5. a brake pad assembly; 51. a first brake pad; 52. a second brake pad; 53. a first brake lining subplate; 54. a second brake lining subplate; 6. a piston rod seal assembly; 61. a first piston rod seal; 62. a second piston rod seal; 7. a common status detection component; 71. bending a rod; 72. a magnet; 73. a switch support; 74. a magnetic switch; 8. a mechanical mitigation detection component; 81. a switch mounting base; 82. a limit switch; 83. a magnetic conductor; 9. a stop assembly; 91. a stopper portion; 92. a limiting part; 93. a threaded cap; 10. a fixed stop; 101. a first elastic support member; 30. an outer caliper body; 301. a support shaft; 3011. a first suspension bushing; 3012. a second suspension bushing; 3013. a self-lubricating bearing; 302. installing a bolt; 303. pressing a plate; 304. a rubber shock pad; 305. a shaft end baffle; 306. and (5) stopping by a conical surface.
Detailed Description
Hereinafter, embodiments of the present invention will be further described with reference to the accompanying drawings.
In the description of the present invention, it should be noted that the terms "first", "second", "third", and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
With reference to fig. 1 and 2, the present invention proposes a manual mechanical release device 1 for mechanical release of a hydraulic brake caliper, comprising: the rotating shaft 11 is provided with a height adjusting piece 12; the relieving handle 13 is arranged at one end of the rotating shaft 11, and is used for driving the rotating shaft 11 to rotate; the elastic component 14, the elastic component 14 is set up in another end of the spindle 11; a power guide 15; a lever 16, the structure of the lever 16 referring to fig. 4, one side of the lever 16 abuts against the power guide 15, and the other side abuts against the elastic assembly 14 and the height adjusting member 16; and a lever shaft 17, wherein the lever shaft 17 penetrates through the lever 16 and is mounted on the clamp body (not shown in the figure), so that the lever 16 can rotate around the lever shaft 17. Illustratively, the height adjusting member 12 of the present invention is in a cam structure, the rotating shaft 11 passes through the cam and is fixedly connected with the cam, and the other side of the lever 16 abuts against the elastic component 14 and the cam surface 121 of the cam. The trend of the height of the cam surface 121 is shown in fig. 3, the lowest point of the cam surface 121 is a reference zero point, and the height difference between the highest point and the lowest point is Lmm, and the height can be adjusted and optimized appropriately according to actual needs. The rotating shaft 11 rotates to drive the cam 121 to rotate, the lever 16 is pushed to rotate around the lever shaft 17 by utilizing the height difference of the cam surface 121, and then the power guide piece 15 is pushed to move, so that the brake pad generates a gap, and the manual mechanical release of the clamp is realized.
Further, with continued reference to fig. 1, the manual mechanical release device 1 further includes a support protection member 18, wherein the support protection member 18 is installed on the caliper body (not shown) after being penetrated by the rotating shaft 11; a guard, the guard further comprising: a rotating shaft protection piece 19, wherein the rotating shaft protection piece 19 is sleeved on the rotating shaft 11 and is in threaded connection with the supporting protection piece 18; an elastic protector 20, the elastic protector 20 being disposed between the elastic assembly 14 and the lever 16. Illustratively, the resilient assembly 14 of the present invention is preferably a return spring, the support guard 18 is preferably a support bushing, the shaft guard 19 is preferably an adjustment bushing, and the resilient guard 20 is preferably a washer. Specifically, in this embodiment, one end of the rotating shaft is pressed by the adjustment sleeve, and the other end is pressed by the lever, so that the movement in the axial direction of the rotating shaft is restricted and only the rotational movement can be performed by the external force. With continued reference to fig. 1, when the pliers are to be mechanically released manually, the release handle 12 is rotated clockwise to rotate the rotating shaft 11, and due to the height difference of the cam surface 121, one side of the lever 16 is pushed to move downward for a certain distance, and the other side of the lever 16 moves upward, so that the power guide 15 is pushed to move upward, so that the pliers are released, and a certain gap is formed. When normal braking of the clamp is relieved, the reset force of the reset spring enables the lever to compress the rotating shaft all the time, and vibration of the lever along with a vehicle is avoided in the running process of the vehicle.
This manual machinery alleviates device, convenient operation, flexibility, and the requirement on space is not high, can alleviate the handle through the outside and carry out machinery to the tong and alleviate to adjust alleviating power through lever structure, utilize the adjustment lever to adjust output power, conveniently optimize output power under the condition that the space allows, simple laborsaving.
The present invention also provides a brake caliper, with reference to fig. 5-9, comprising:
in the manual mechanical relieving device of the embodiment, the power guide piece is internally provided with the power cavity and the conical surface cavity;
the internal pliers comprise an internal pliers body 2, wherein a transmission channel is arranged in the internal pliers body 2 in a hollow mode, a power guide piece 15 is arranged in the transmission channel, and a lever shaft 17 and a support protection piece 18 are arranged on the internal pliers body 2;
the power assembly 3 is arranged in the power cavity and acts on the power guide piece;
the transmission component 4 is axially arranged in the conical cavity and is in sliding connection with the inner clamp body 2;
and the brake pad assembly 5 is arranged on the inner caliper body 2.
Specifically, referring to fig. 5, the damper blade assembly 5 includes a first damper blade 51, a second damper blade 52, a first damper blade sub-plate 53, and a second damper blade sub-plate 54; the first brake pad 51 and the second brake pad 52 are respectively arranged on the first brake pad auxiliary plate 53 and the second brake pad auxiliary plate 54; a first brake lining subplate 53 and a second brake lining subplate 54 are arranged on the inner caliper body 2
Further, the hydraulic brake caliper further comprises an outer caliper body 30, the inner caliper body 2 is mounted on the outer caliper body 30 through a support shaft 301, and the outer caliper body 30 is fixed on the vehicle body through a mounting bolt 302.
Specifically, referring to fig. 6 and 9, the clamp adopts a floating structure and an integrated design, the outer clamp body 30 is fixed on the vehicle body through a mounting bolt 302, a pressing plate 303 is arranged between the mounting bolt 302 and the outer clamp body 30, the inner clamp body is mounted on the outer clamp body 30 through a support shaft 301, and a first suspension shaft sleeve 3011, a second suspension shaft sleeve 3012 and a self-lubricating bearing 3013 are sleeved on the support shaft 301. For the purpose of shock absorption, rubber shock absorbing pads 304 are mounted at both ends of the support shaft 301, and the rubber shock absorbing pads 304 are fixed with conical surface stoppers 306 through shaft end baffle plates 305.
Referring to fig. 8, the transmission assembly 4 further includes:
the first transmission piece 41 is axially arranged in the transmission channel and is in sliding connection with the inner caliper body 2, the first transmission piece 41 is provided with a convex cone part 411, one end of the convex cone part 411 is close to the convex cone part 411 and penetrates through the power guide part 15, and the convex cone part 411 is in contact with the conical cavity;
the first transmission piece 42, the first transmission piece 42 is connected with another end screw thread of the first transmission piece 41;
one end of the third transmission piece 43 is in threaded connection with the first transmission piece 42, and the other end of the third transmission piece 43 can be in contact with the first brake pad auxiliary plate 53 through a key groove;
the first elastic member 44 is sleeved on the first transmission member 41, and is disposed between the convex cone portion 321-1 and the first transmission member 42. Further, with continued reference to fig. 8, the hydraulic brake caliper further includes a piston rod seal assembly 6, the piston rod seal assembly 6 further comprising:
the first piston rod sealing element 61 is sleeved on the outer side of the power cavity of the power guide element 15;
and the second piston rod sealing element 62 is sleeved outside the conical cavity of the power guide element 15, and an oil cavity is formed between the second piston rod sealing element and the first piston rod sealing element 61.
Specifically, referring to fig. 8, in the present embodiment, the power assembly 3 disposed in the power chamber acts on the power guide 15 to provide a force axially forward along the transmission passage to the power guide 15 for a braking operation. The first transmission member 41 is axially disposed in the transmission passage and slidably connected to the inner caliper body 2, and the first transmission member 41 has a convex tapered portion 411, one end of which passes through the power guide 15, and the convex tapered portion 411 is in contact with the inner side of the tapered cavity. The first transmission member 42 is screwed with the first transmission member 41, and a first elastic member 44 is disposed between the convex cone 411 and the first transmission member 42, and the first elastic member 44 is sleeved outside the first transmission member 41. When the power guide 15 moves forward, the first transmission member 41 is subjected to the elastic force of the first elastic member 44, so that the convex conical surface of the convex conical portion 411 and the concave conical surface of the conical cavity are pressed tightly, and the first transmission member 41 cannot rotate and can only move forward along the axial direction. The first transmission piece 42 is in threaded connection with the first transmission piece 41, one end of the third transmission piece 43 is in threaded connection with one end of the first transmission piece 42, the other end of the third transmission piece 43 is connected with the first brake pad sub-plate 53 through a key groove, the first brake pad sub-plate 53 cannot rotate, and the first transmission piece 42 can only move forwards or backwards along the axial direction. The first transmission piece 41 moves forwards along the axial direction to drive the first transmission piece 42 and the third transmission piece 43 to move forwards, so that the first brake pad is pushed to move forwards, the brake disc is pressed tightly, and braking force is generated to realize vehicle braking.
In this embodiment, the power assembly 3 is provided with a power protection member 31 at a force-receiving portion contacting with the power cavity, the power protection member 31 is preferably a disc spring gasket set, the first elastic member 44 is preferably a return spring, and preferably, one end of the first elastic member 44 near the convex cone portion 411 is connected to the other end surface of the convex cone portion 411 of the first transmission member 41 through a needle bearing 204 and a bearing gasket 205. Illustratively, the convex conical portion 411 of the first transmission member 41 is further sleeved with a circlip 206 for hole and a conical surface supporting seat 207, and the circlip 206 for hole and the conical surface supporting seat 207 are connected with the first resilient supporting member 101.
Further, referring to fig. 7, the hydraulic brake caliper further includes a stopping assembly 9, the stopping assembly 9 is disposed on the inner caliper body 2, and the stopping assembly 9 includes:
the stopping part 91, the stopping part 91 is used for adjusting the output force of the power assembly 3;
and the limiting part 92 is connected with the stopping part 91 through a bolt, and is used for blocking the power assembly 3. In this example, the first transmission member 41 is preferably a stud shaft, the first transmission member 42 is preferably a nut, the transmission protection member 202 is sleeved on the outer side of the first transmission member 42, and the transmission protection member 202 is preferably a nut sleeve; the third transmission piece 43 is preferably a nut connecting seat; the inner caliper body 2 is further provided with a threaded cap 93 for protecting the outer hexagon of the first transmission member 42.
Further, referring to fig. 8, the device further includes a fixed stop member 10, the fixed stop member 10 is fixedly connected to a first elastic support member 101, and the first elastic support member 101 is sleeved on the outer side of the first elastic member 44 and is used for supporting the first elastic member 44. For example, in the present embodiment, the limiting member 203 is sleeved outside the first transmission member 42, and under the action of the power assembly 3, the limiting member 203 can be slidably connected to the first transmission member 42; a limit groove is arranged between the fixed stop piece 10 and the first elastic supporting piece 101 and is used for limiting the moving distance of the first transmission piece 42; the limiting piece 203 is located in the limiting groove and can move in the limiting groove along the axial direction of the transmission channel. The inner caliper body 2 is further provided with a dust guard 201 for covering the transmission passage.
Referring to fig. 9 and 10, the inner caliper body 2 is further provided with a second elastic supporting member 21, the second elastic supporting member 21 is provided with a second elastic member 22, and two ends of the second elastic member 22 are respectively connected with the first brake pad auxiliary plate 53 and the second brake pad auxiliary plate 54 for resetting a gap between the brake pad and the brake disc. Specifically, in this embodiment, the second elastic supporting member 21 is further sleeved with a second elastic guiding member 23, and the second elastic guiding member 23 is provided with a damper flap 24.
Further, the hydraulic brake caliper further includes a service state detection assembly 7 for detecting and displaying a normal braking state and a normal release state, referring to fig. 10 and 11, the service state detection assembly 7 includes:
a bent rod 71, one end side of which is connected with the power guide 15 and moves synchronously with the power guide 15;
a magnet 72, the magnet 72 being provided on the other end side of the bent rod 71;
a switch support 73, wherein the switch support 73 is connected to the bent rod 71 through a fixed shaft;
a magnetic switch 74, the magnetic switch 74 being disposed on the switch holder 73;
the magnetic switch 74 is of a single-pole double-throw type, and is used for controlling different end points to be connected according to the change of the relative position of the magnetic switch and the magnet 72, outputting a corresponding level signal, and a network system of the vehicle collects the level signal and transmits the level signal to a driver screen to display corresponding state information.
Specifically, referring to fig. 11 and 12, during service braking and relieving, the power guide 15 reciprocates forward and backward, and the curved rod 71 is always attached to and moves synchronously with the power guide 15; the other end of the bent rod 71 is connected with a magnet 72, and the bent rod 71 rotates around a fixed shaft, so that the positions of the magnet 72 and the magnetic switch 74 are changed. Further, when the magnet 72 moves to the triggering range of the first fixed end of the magnetic switch 74, the movable end of the magnetic switch 74 is connected with the first fixed end, and a high-level signal is output to display a normal brake application state; when the magnet 72 moves to the triggering range of the second stationary end of the magnetic switch 74, the movable end of the magnetic switch 74 is connected with the second stationary end, and a low level signal is output to display a normal brake release state.
For example, referring to fig. 12, in the present embodiment, when the triggering range of the first stationary terminal B of the magnetic switch 74 is equal to or less than L1, in the triggering range, the moving terminal a of the magnetic switch 74 and the first stationary terminal B are turned on, and a high level signal is output to indicate a normal brake application state. When the triggering range of the second stationary end C of the magnetic switch 74 is that the distance between the magnet 72 and the magnetic switch 744 is greater than L1, in the triggering range, the moving end a of the magnetic switch 74 is connected with the second stationary end C, and a low-level signal is output, so that a normal braking alleviation state is displayed.
With continued reference to fig. 11 and 12, the initial positions of the bent rod 71 and the magnet 72 are as shown in fig. 10, the initial distance between the two is L2, the moving end a of the magnetic switch 74 is connected to the first stationary end B, and a high level signal is output externally to indicate the application of the brake; when high-pressure hydraulic oil is introduced into the oil cavity, the power assembly 3 is compressed, the power guide piece 15 moves backwards, the bent rod 71 moves along with the power guide piece 15, the magnet 72 is far away from the magnetic switch 74, the moving end A point is disconnected with the first fixed end B point, the moving end A point is connected with the second fixed end C point, the brake release state is displayed, a network system of the vehicle acquires a high-low level change signal, and brake application and release information is displayed on a screen of a driver.
Further, referring to fig. 10 and 13, the mechanical mitigation detecting assembly 8 is further included, and the mechanical mitigation detecting assembly 8 includes:
the switch mounting seat 81, the switch mounting seat 81 is set on the inner caliper body 2;
the limit switch 82, the limit switch 82 is located on the switch mounting seat 81;
the magnetic conductor 83 and the magnetic conductor 83 are coaxially arranged with the rotating shaft 11, one end of the magnetic conductor 83 is installed on the height adjusting piece 12, the rotating shaft 11 rotates to drive the magnetic conductor 83 to synchronously rotate, and the other end of the magnetic conductor can be in contact with the limit switch 82.
Specifically, with continued reference to fig. 13, the mechanical mitigation detecting element 8 is in an initial state where the magnetic conductor 83 is located in the limit switch 82, and at this time, the limit switch 82 is turned on to output a high level; when machinery is relieved, the relieving handle 13 rotates to drive the rotating shaft 11 to rotate, the magnetic conductor 83 rotates out of the limit switch 82, the limit switch 82 is disconnected at the moment, low level is output, and machinery relieving state is displayed. The network system of the vehicle collects the high and low level change signals and displays the manual mechanical relief information on a driver screen.
For further understanding of the technical solution of the present embodiment, referring to fig. 1 to 13, the operation and function of the hydraulic brake caliper according to the present embodiment are specifically described as follows:
(1) normal braking and status detection thereof
An oil cavity is formed between the first piston rod sealing element 341 and the second piston rod sealing element 342, an oil inlet and an oil outlet are formed in the oil cavity, high-pressure oil is released from the oil inlet and the oil outlet, so that the power assembly 3 in a compressed state under the action of the hydraulic oil is released, the power guide element 15 is pushed to move forwards, the convex conical surface of the convex conical part 411 is pressed by the concave conical surface of the conical surface cavity of the power guide element 15, the first transmission element 41 is pushed to move forwards, the first transmission element 41 drives the first transmission element 42 and the third transmission element 43 to move forwards, the brake pad is further pushed to move, the brake disc is compressed, braking force is generated, and vehicle braking is realized. When the power guide 15 moves forwards, the bent rod 71 synchronously moves forwards to drive the magnet 72 to be close to the magnetic switch 74, the magnet 72 moves to the triggering range of the first fixed end of the magnetic switch 74, the movable end A is connected with the first fixed end B and outputs high level outwards, and a network system of the vehicle acquires high level signals and displays brake application information on a screen of a driver.
(2) Normal remission and state detection thereof
High-pressure hydraulic oil is introduced into the oil cavity from the oil inlet and outlet, the high-pressure hydraulic oil pushes the power guide 15 to move backwards, the power assembly 3 is compressed, and the conical surface of the conical surface cavity of the power guide 15 and the convex cone of the convex cone part of the first transmission part 41 are separated from the first elastic part 44 to reset; in the process of resetting, the resetting force of the first elastic member 44 pushes the first transmission member 41 to move backwards, and then drives the first transmission member 42 and the third transmission member 43 to move backwards, so that a gap is generated between the brake pads, the braking force disappears, and the vehicle is relieved. When the power guide 15 moves backwards, the bent rod 71 synchronously moves backwards to drive the magnet 72 to be far away from the magnetic switch 74, the magnet 72 moves backwards to a triggering range of a second fixed end C of the magnetic switch 74, the movable end A is disconnected with the first fixed end B, the movable end A is connected with the second fixed end C and outputs low level outwards, a network system of the vehicle acquires a low level signal, and brake release information is displayed on a screen of a driver.
(3) Manual mechanical mitigation and condition detection thereof
Manual mechanical mitigation is performed when normal mitigation fails. The release handle 13 is rotated clockwise to drive the rotating shaft 11 to rotate, the height adjusting piece 12 on the rotating shaft 11 can push the power guide piece 15 at the other end of the lever 16 to move backwards, the power guide piece 15 is separated from the first transmission piece 41, the first transmission piece 41 is driven to move backwards by the reset force of the first elastic piece 44, and then the first transmission piece 42 and the third transmission piece 43 are driven to move backwards, so that a gap is formed between the brake pads, and the vehicle is released. The magnetic conductor 83 is driven to rotate when the rotating shaft 11 rotates clockwise, the magnetic conductor 83 rotates out of the limit switch 82, the limit switch 82 is switched off at the moment, low level is output, a network system of a vehicle collects low level signals, and information is relieved through manual machinery on a screen of a driver.
(4) Brake pad and brake disc wear automatic compensation
Assuming that a normal braking gap between the pads and the disc is L ', and the wear of the pads and the disc occurs by Δ L, the braking gap becomes L' + Δ L. When the brake is applied, the elastic force of the power assembly 3 is released, the power guide 15, the first transmission piece 41, the first transmission piece 42, the third transmission piece 43 and the brake pad are pushed to move forward, and the limiting piece 203 is connected with the first transmission piece 42 in a sliding manner, so that the brake pad can be pushed to move forward by a distance of L' + delta L to clamp the brake disc, and a braking force is generated. After high-pressure hydraulic oil is introduced, the power guide 15 moves backwards under the action of the oil pressure to compress the power assembly 3, so that the clamp is relieved, the first transmission piece 41 moves backwards along with the power guide 15 under the action of the reset force of the first elastic piece 44, due to the action of the limiting piece 203, the first transmission piece 42 can only move forwards by the distance of L ', the first transmission piece 41 can only rotate under the action of the reset force of the first elastic piece 44, so that the first transmission piece 42 in threaded connection with the first transmission piece 41 moves forwards, and after repeated times, the nut moves forwards to compensate the abrasion gap delta L, so that the brake gap is L' all the time.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art may apply the above modifications or changes to the equivalent embodiments with equivalent changes, without departing from the technical spirit of the present invention, and any simple modification, equivalent change and change made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the technical spirit of the present invention.
Claims (15)
1. Manual mechanical mitigation device, characterized by, including:
the height adjusting device comprises a rotating shaft (11), wherein a height adjusting piece (12) is arranged on the rotating shaft (11);
the relieving handle (13), the relieving handle (13) is arranged at one end of the rotating shaft;
the elastic component (14), the said elastic component (14) is set up in another end of the spindle (11);
a power guide (15);
the lever (16), one side of the said lever (16) is leaned against the power guide (15), another side is leaned against the elastic assembly (14) and height adjusting part (12);
a lever shaft (17), wherein the lever shaft (17) penetrates through the lever (16).
2. Manual mechanical mitigation device according to claim 1, wherein the height adjustment member (12) is a cam, the shaft (11) is passing through the cam and fixedly connected thereto, and the other side of the lever (16) abuts against the resilient member (14) and the cam surface (121) of the cam.
3. Manual mechanical mitigation device according to claim 1, further comprising a support protection (18), said support protection (18) being penetrated by the shaft (11).
4. The manual mechanical mitigation device of claim 3, further comprising a guard, the guard further comprising:
the rotating shaft protection piece (19) is sleeved on the rotating shaft (11) and connected with the supporting protection piece (18);
an elastic protection (20), the elastic protection (20) being arranged between the elastic assembly (14) and the lever (16).
5. A hydraulic brake caliper, comprising:
the manual mechanical release device of any one of claims 1 to 4, wherein the power guide (15) is internally provided with a power cavity and a conical cavity;
the internal pliers body (2) is internally and hollowly provided with a transmission channel, the power guide piece (15) is arranged in the transmission channel, and the lever shaft (17) and the support protection piece (18) are arranged on the internal pliers body (3);
the power assembly (3), the said power assembly (3) is set up in the power cavity;
the transmission component (4) is axially arranged in the conical cavity and is in sliding connection with the inner clamp body (2);
the brake pad component (5) is arranged on the inner caliper body (2).
6. The hydraulic brake calliper according to claim 5, wherein the brake pad assembly (5) comprises a first brake pad (51), a second brake pad (52), a first brake pad sub plate (53), a second brake pad sub plate (54), the first brake pad (51) and the second brake pad (52) being arranged on the first brake pad sub plate (53) and the second brake pad sub plate (54), respectively.
7. The hydraulic brake caliper of claim 6, wherein the transmission assembly (4) further comprises:
the first transmission piece (41) is axially arranged in the transmission channel and is in sliding connection with the inner caliper body (2), the first transmission piece (41) is provided with a convex cone part (411), one end of the convex cone part (411) close to the convex cone part penetrates through the power guide piece (15), and the convex cone part (411) is in contact with the conical cavity;
the second transmission piece (42), the said second transmission piece (42) is connected with another end of the first transmission piece (41);
one end of the third transmission piece (43) is in threaded connection with the second transmission piece (42), and the other end of the third transmission piece (43) can be in contact with the first brake pad auxiliary plate (53) through a key groove;
the first elastic piece (44) is sleeved on the first transmission piece (41) and arranged between the convex cone part (411) and the second transmission piece (42).
8. The hydraulic brake caliper of claim 5 further comprising a piston rod seal assembly (6), the piston rod seal assembly (6) comprising:
the first piston rod sealing element (61) is sleeved on the outer side of the power cavity of the power guide element;
and the second piston rod sealing piece (62) is sleeved on the outer side of the conical cavity of the power guide piece, and an oil cavity is formed between the second piston rod sealing piece and the first piston rod sealing piece (61).
9. The hydraulic brake caliper according to claim 8, further comprising a service status display detection assembly (7), the service status detection assembly (7) comprising:
one end side of the bent rod (71) is connected with the power guide (15) and moves synchronously (15) with the power guide;
a magnet (72), wherein the magnet (72) is arranged at the other end side of the bent rod (71), and the bent rod (71) moves to drive the magnet (72) to move;
the switch support (73), the said switch support (73) is connected to knee lever (71) through the fixed axle;
a magnetic switch (74), the magnetic switch (74) being arranged on the switch support (73).
10. The hydraulic brake caliper of claim 9, wherein the magnetic switch is of the single pole double throw type;
when the magnet (72) moves to the triggering range of the first fixed end of the magnetic switch (74), the movable end of the magnetic switch (74) is connected with the first fixed end, a high-level signal is output, and a normal brake application state is displayed;
when the magnet (72) moves to the triggering range of the second fixed end of the magnetic switch (74), the movable end of the magnetic switch (74) is connected with the second fixed end, a low-level signal is output, and a normal brake release state is displayed.
11. The hydraulic brake caliper of claim 5, further comprising a mechanical mitigation detection assembly (8), the mechanical mitigation detection assembly (8) comprising:
the switch mounting seat (81), the switch mounting seat (81) is arranged on the inner clamp body (2);
the limit switch (82), the limit switch (82) is located on the switch mounting seat (81);
magnetic conductor (83), with pivot (11) coaxial arrangement, install magnetic conductor (83) one end on height adjusting part (12), the other end can contact with limit switch (82).
12. A hydraulic brake caliper according to claim 5, further comprising a stop assembly (9), said stop assembly (9) covering the end of the transmission channel where the power guide (15) is located, said stop assembly (9) comprising:
a stop part (91), wherein the stop part (91) is connected with the power assembly (4);
the limiting part (92), the limiting part (92) is connected with the stopping part (91).
13. A hydraulic brake caliper according to claim 5, further comprising a fixed stop (10), said fixed stop (10) having a first resilient support (101) fixedly attached thereto, said first resilient support (101) supporting the first resilient member (44).
14. A hydraulic brake caliper according to claim 5, wherein a second elastic support member (21) is provided on the inner caliper body (2), a second elastic member (22) is provided on the second elastic support member (21), and both ends of the second elastic member (22) are connected to the first and second pad sub-plates (53, 54), respectively.
15. The hydraulic brake caliper according to claim 5, further comprising an outer caliper body (30), wherein the inner caliper body (2) is mounted to the outer caliper body (30) by a support shaft (301), and the outer caliper body (30) is fixed to a vehicle body by a mounting bolt (302).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010966798.0A CN112109760B (en) | 2020-09-15 | 2020-09-15 | Manual mechanical relieving device and hydraulic braking clamp thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010966798.0A CN112109760B (en) | 2020-09-15 | 2020-09-15 | Manual mechanical relieving device and hydraulic braking clamp thereof |
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| CN112109760A true CN112109760A (en) | 2020-12-22 |
| CN112109760B CN112109760B (en) | 2021-09-14 |
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| CN202010966798.0A Active CN112109760B (en) | 2020-09-15 | 2020-09-15 | Manual mechanical relieving device and hydraulic braking clamp thereof |
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| CN112109760B (en) | 2021-09-14 |
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