CN107524737A - Hydraulic parking brake and its brake clearance compensation mechanism - Google Patents
Hydraulic parking brake and its brake clearance compensation mechanism Download PDFInfo
- Publication number
- CN107524737A CN107524737A CN201710751691.2A CN201710751691A CN107524737A CN 107524737 A CN107524737 A CN 107524737A CN 201710751691 A CN201710751691 A CN 201710751691A CN 107524737 A CN107524737 A CN 107524737A
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- China
- Prior art keywords
- brake
- mandrel
- screw rod
- bearing block
- piston
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- F16D65/38—Slack adjusters
- F16D65/72—Slack adjusters hydraulic
- F16D65/74—Slack adjusters hydraulic self-acting in one direction
-
- 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
- F16D65/38—Slack adjusters
- F16D65/40—Slack adjusters mechanical
- F16D65/42—Slack adjusters mechanical non-automatic
- F16D65/46—Slack adjusters mechanical non-automatic with screw-thread and nut
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses a kind of brake clearance compensation mechanism, including housing, the center of housing is provided with the screw rod being slidably matched with it, the adjustment mandrel that suit coordinates with its screw thread on screw rod, the periphery wall on adjustment mandrel top is provided with bull external screw thread, the bearing assembly that the top suit of mandrel coordinates with its screw thread is adjusted, bearing assembly shell is provided with the bearing block for rotating cooperation, and bearing block single-degree-of-freedom is slidably installed in housing；Installation set is outer mounted in bearing block in housing and makes bearing block and adjusts the disc spring that the spacing anti-rotation structure between mandrel combines；It is provided with and is located at below adjustment mandrel and for the piston of the axially upwardly power to the application of adjustment mandrel axially upwards in housing；Piston is provided with the outer confined planes coordinated respectively with bearing block and adjustment mandrel and interior confined planes, and interior confined planes in outer confined planes and the spacing cooperation of bearing block and adjust between mandrel and have gap.The invention also discloses a kind of hydraulic parking brake.
Description
Technical field
The present invention relates to a kind of EPB, specifically compensates machine for a kind of hydraulic parking brake and its brake clearance
Structure.
Background technology
With increasingly exacerbation the problems such as traffic congestion, energy crisis and environmental pollution, first developing public transport turns into
The core strategy of each Traffic Development in world wide.Under this background, environmentally friendly, advanced in performance, ride comfort attractive in appearance
It will be well worth doing with the modern railcar train of low running cost.
According to design requirement, the track of track traffic is not always maintained at level, but has certain ramp, in order to
Apply in the case of the ruling grade and maximum load of circuit and park, current vehicle typically uses when realizing storing cycle
Manual brake device.The principle of Manual brake device is：Brake shoe is pulled by leverage using manual backup, brake force is passed
It is delivered on wheel, while uses scotch block.But with brake block abrasion, brake clearance can become larger, and brake force decreases.Separately
A kind of vehicle parking mode is：Changed according to train wind pressure, there is wind to alleviate calm braking, but the list that this mode of braking needs
First brake unit quantity is more, and the control for air pressure is more difficult, the failure such as easily occurs revealing.
The content of the invention
In view of this, it is an object of the invention to provide a kind of hydraulic parking brake and its brake clearance compensation mechanism,
The gap of adjustable EPB.
To reach above-mentioned purpose, the present invention provides following technical scheme：
Present invention firstly provides a kind of brake clearance compensation mechanism, including housing, the center of the housing is provided with to be slided with it
The screw rod of cooperation, set is equiped with the adjustment mandrel coordinated with its screw thread, the periphery wall on the adjustment mandrel top on the screw rod
Bull external screw thread is provided with, the top set of the adjustment mandrel is equiped with the bearing assembly coordinated with its screw thread, and the bearing is total
The bearing block for rotating cooperation is equiped with into overcoat, the bearing block single-degree-of-freedom is slidably installed in the housing
It is interior；Spacing anti-rotation structure is provided between the bottom of the adjustment mandrel and the bottom of the bearing block, and is installed in the housing
Combined provided with the spacing anti-rotation structure for being sleeved on outside the bearing block and making the bearing block between the adjustment mandrel
Disc spring, the disc spring passes through the spacing anti-rotation structure and applies power axially downwards axially downwardly to the adjustment mandrel；Institute
State to be provided with housing and be located at below the adjustment mandrel and for the axially upwardly power to the adjustment mandrel application axially upwards
Piston, it is described adjustment mandrel and the piston between be provided with end face rolling bearing；The piston be provided with respectively with the axle
Bearing and it is described adjustment mandrel coordinate outer confined planes and interior confined planes, and the interior confined planes the outer confined planes with it is described
There is gap between the adjustment mandrel during the spacing cooperation of bearing block；
Also be fixed with the housing and the lasso above the bearing assembly, the lasso and the bearing assembly it
Between be provided with rotation stopping knot when the lasso and the bearing assembly are engaged for preventing the bearing assembly rotation
Structure；
The lower end extension of the screw rod is stretched out outside the housing, is arranged on the external screw thread adjusted on mandrel and is arranged on institute
The externally threaded rotation direction stated on screw rod is identical, and the externally threaded pitch being arranged on the adjustment mandrel is described more than being arranged on
Externally threaded pitch on screw rod.
Further, the bottom of the adjustment mandrel is provided with the male cone (strobilus masculinus) that external diameter gradually increases along direction from top to bottom,
The bottom of the bearing block is provided with the inner conical surface coordinated with the male cone (strobilus masculinus)；The rotation stopping structure is to be arranged on the bearing
Tapered face fit structure between assembly and the lasso.
Further, light pearl spring detent is provided between the bearing assembly and the bearing block.
Further, also set is equiped with available for the outer work for applying axially upwardly power axially upwards to it outside the piston
Plug.
Further, the housing includes upper shell, is fixedly mounted on the lower house of the upper shell lower end and is sleeved on institute
The closure outside screw rod is stated, the disc spring is arranged in the upper shell, and the piston and outer piston are arranged on the lower house
It is interior, and corresponded respectively with the piston and the outer piston on the lower house and be provided with the hydraulic pressure for being used for connecting hydraulic means
Interface.
Further, the upper end end face of the screw rod is provided with blind hole, is provided with the blind hole and manually adjusts bar, described manual
Adjustment bar is slidably matched with the blind hole, and described manually adjusts bar and the screw rod synchronous axial system.
Further, annular is laid with interior semicolumn groove, the inwall of the blind hole on the periphery wall for manually adjusting bar
Upper corresponded with the interior semicolumn groove is provided with outer semicolumn groove, and the interior semicolumn groove is formed with the outer semicolumn groove
Cylinder groove interpolation is equiped with needle roller.
The invention also provides a kind of hydraulic parking brake, including bracket assembly and caliper, set on the bracket assembly
There is pin, the caliper, which is slidably matched, to be sleeved on the pin, and the caliper is provided with rotating shaft, is rotated in the rotating shaft
Engagement sleeves are equiped with pressure arm, and the both ends of the pressure arm are located at the both sides of the rotating shaft, and one end of the pressure arm respectively
Arrestment mechanism is provided between the caliper；The system being provided with as described in claim any one of 1-7 is fixedly mounted on the caliper
Dynamic rocker compensating gear, and the other end of the pressure arm is engaged with the screw rod lower end.
Further, be provided with push-plate between the lower end of the screw rod and the pressure arm, and the push-plate and the screw rod it
Between be provided with wear-resisting lubrication part；It is fixedly mounted to be provided with the pressure arm and is used to be engaged a section contact with the push-plate, it is described
Contact element surface to the top surface of the push-plate be sphere.
Further, the arrestment mechanism includes sliding pin, and the both ends of the sliding pin are equiped with peace with its sliding fiting sleeve respectively
The first brake block on the caliper and the second brake block being engaged with the pressure arm, installing is covered on the sliding pin
There is the spring between first brake block and the second brake block, and set between first brake block and the second brake block
There is brake disc；The pressure arm is provided with the ball type of contact surface for being used for being engaged and raise up with second brake block.
The beneficial effects of the present invention are：
The hydraulic parking brake of the present invention, the brake clearance compensation mechanism that installation is engaged with pressure arm on caliper, profit
The adjustment in EPB gap can be realized with brake clearance adjustment mechanism, its principle is as follows：
The parking braking when gap is normal, in the presence of disc spring, the spacing anti-rotation structure knot between bearing block and adjustment mandrel
Merge to adjustment mandrel and apply power axially downwards, in the presence of spacing anti-rotation structure, adjustment mandrel can not rotate, and this is to lower axle
Adjustment mandrel and screw rod is driven to move downwardly together to power, and driving pressure arm rotates, and realizes parking braking；
When braking release, under normal circumstances, piston applies upward axial force, driving in the presence of hydraulic pressure to adjustment mandrel
Adjustment mandrel, screw rod and bearing block move upwards；
But in the case where brake clearance is excessive, when braking discharges, piston promotes bearing block, screw rod, adjustment mandrel and bearing total
Into a segment distance is moved together, rear lasso contacts with bearing assembly so that rotation stopping structure combines, and bearing assembly can not move
And rotation；The spacing cooperation between the outer confined planes of piston in parking braking due to bearing block, piston drive shaft bearing first
Motion upwards, cause spacing anti-rotation structure separation failure, then interior confined planes drive adjustment in the presence of the rolling bearing of end face
Mandrel moves upwards, in the presence of adjustment mandrel and bearing assembly and thread matching structure between screw rod, adjusts core
Axle rotates, and bearing assembly is motionless, and the adjustment mandrel drive screw of rotation moves down, due to the outer spiral shell being arranged on adjustment mandrel
The pitch of line is more than the externally threaded pitch being arranged on screw rod, and now screw rod is moved downwardly certain relative to adjustment mandrel
Distance, realize backlash compensation.
The hydraulic parking brake of the present invention has further the advantage that：
1st, by setting outer piston, it is ensured that outer piston can be used to realize the release of parking braking after piston hydraulic pressure thrashing,
Ensure that brake can run well, reliability is higher；
After the 2nd, if hydraulic system fails, the also available release for manually adjusting the movement of bar drive screw and realizing parking braking；
3rd, set contact and push-plate to be engaged on pressure arm by setting, and the top surface of contact is arranged to sphere, together
When on pressure arm set ball type of contact surface be engaged with the second brake block, contact original using the point between sphere and plane
Reason, it can be ensured that braking motion is steady, has no abnormal sound.
Brief description of the drawings
In order that the purpose of the present invention, technical scheme and beneficial effect are clearer, the present invention provides drawings described below and carried out
Explanation：
Fig. 1 is the structural representation of hydraulic parking brake embodiment of the present invention；
Assembly relation schematic diagrames of the Fig. 2 between pressure arm and rotating shaft and caliper.
Description of reference numerals：
1- disc springs；2- bearing assemblies；3- manually adjusts bar；4- adjusts mandrel；5- pistons；6- outer pistons；7- screw rods；8- calipers；
The brake block of 9- first；9 '-the second brake block；10- sliding pins；11- pressure arms；12- rotating shafts；13- bracket assemblys；14- compensation mechanisms；
15- bearing blocks；16- lassos；17- end faces bearing；18- push-plates；19- contacts；20- springs；21- ball type of contact surface；22- upper casings
Body；23- lower houses；24- closures；25- end faces bearing.
Embodiment
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings, so that those skilled in the art can be with
It is better understood from the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
As shown in figure 1, the structural representation for hydraulic parking brake embodiment of the present invention.The hydraulic pressure parking of the present embodiment
Brake, including bracket assembly 13 and caliper 8, bracket assembly 13 are provided with pin, and caliper 8, which is slidably matched, to be sleeved on pin,
Caliper is provided with rotating shaft 12, and rotating engagement sleeves in rotating shaft 12 is equiped with pressure arm 11, and the both ends of pressure arm 11 are located at respectively
The both sides of rotating shaft 12, and arrestment mechanism is provided between one end of pressure arm 11 and caliper 8.It is fixedly mounted on caliper 8 and is provided with braking
Rocker compensating gear 14.
The brake clearance compensation mechanism of the present embodiment, including housing, the center of housing are provided with the screw rod being slidably matched with it
7, set is equiped with the adjustment mandrel 4 coordinated with its screw thread on screw rod 7, and the periphery wall on adjustment mandrel 4 top is provided with external screw thread, tune
The top set of whole mandrel 4 is equiped with the bearing assembly 2 coordinated with its screw thread, and the overcoat of bearing assembly 2, which is equiped with, rotates cooperation
Bearing block 15, the single-degree-of-freedom of bearing block 15 is slidably installed in housing, the bearing assembly 2 and bearing block of the present embodiment
Light pearl spring detent is provided between 15.Specifically, the external screw thread set on the periphery wall on adjustment mandrel 4 top of the present embodiment is
Trapezoidal bull external screw thread, similarly, bearing assembly 2 are provided with the trapezoidal multiple-internal screw thread coordinated with the trapezoidal bull external screw thread.
Spacing anti-rotation structure, and housing are provided between the adjustment bottom of mandrel 4 and the bottom of bearing block 15 of the present embodiment
Interior installation is provided with the disc spring for being sleeved on that bearing block 15 is outer and combines the spacing anti-rotation structure between bearing block 15 and adjustment mandrel 4
1, disc spring 1 applies power axially downwards axially downwardly by spacing anti-rotation structure to adjustment mandrel 4.Specifically, the present embodiment
The bottom of adjustment mandrel 4 is provided with the male cone (strobilus masculinus) that external diameter gradually increases along direction from top to bottom, and the bottom of bearing block 15 is provided with
The inner conical surface coordinated with male cone (strobilus masculinus), by adjusting the tapered face fit structure between mandrel 4 and bearing block 15, adjustment mandrel can be achieved
Spacing cooperation between 4 and bearing block 15, meanwhile, when inner conical surface and male cone (strobilus masculinus) are bonded, it can effectively prevent that adjustment mandrel 4 is relative
Rotated in bearing block 15, realize the technical purpose for preventing rotation.
It is provided with the housing of the present embodiment positioned at the lower section of adjustment mandrel 4 and for applying axially upwards to adjustment mandrel 4
The axially upwardly piston 5 of power, adjust and be provided with end face rolling bearing, the end face rolling bearing of the present embodiment between mandrel 4 and piston 5
Using needle roller thrust bearing, thrust washer is provided between needle roller thrust bearing and adjustment mandrel 4.Piston 5 be provided with respectively with axle
The outer confined planes and interior confined planes that bearing 15 and adjustment mandrel 4 coordinate, and interior confined planes are spacing in outer confined planes and bearing block 15
There is gap between adjustment mandrel 4 during cooperation.
Synchronous move axially and positioned at the lasso of the top of bearing assembly 2 is also fixed with the screw rod 7 of the present embodiment
16, it is provided between lasso 16 and bearing assembly 2 when lasso 16 is engaged with bearing assembly 2 and is used to prevent bearing assembly 2 from revolving
The rotation stopping structure turned.The rotation stopping structure of the present embodiment is that the conical surface being arranged between bearing assembly 2 and lasso 16 is matched somebody with somebody
Close structure, when the tapered face fit structure between bearing assembly 2 and lasso 16 is combined, can effectively prevent bearing assembly 2 relative to
Lasso 16 rotates.The lasso 16 of the present embodiment uses soft metal material（Such as copper, silver material）It is made, can effectively prevents bearing
Assembly 2 is bruised or excessive wear.
The lower end extension of the screw rod 7 of the present embodiment is stretched out outside housing, the other end and 7 times end in contact of screw rod of pressure arm 11
Coordinate.The external screw thread being arranged on adjustment mandrel 4 is identical with the externally threaded rotation direction being arranged on screw rod 7, and is arranged on adjustment
Externally threaded pitch on mandrel 4 is more than the externally threaded pitch being arranged on screw rod 7.
Further, also set is equiped with available for the axially upwardly power applied to it axially upwards outside the piston 5 of the present embodiment
Outer piston 6, after the hydraulic system of piston 5 breaks down failure, using the time of outer piston 6 axially upwards axially upwardly
Power, i.e. outer piston 6 play standby effect, to improve reliability.The upper end end face of the screw rod 7 of the present embodiment is provided with blind hole,
It is provided with blind hole and manually adjusts bar 3, is manually adjusted bar 3 and be slidably matched with blind hole, and manually adjust bar 3 and the synchronous axial system of screw rod 7.
Specifically, manually adjusting annular on the periphery wall of bar 3 is laid with interior semicolumn groove, on the inwall of blind hole with interior semicolumn groove one
One is correspondingly provided with outer semicolumn groove, and the cylinder groove interpolation that interior semicolumn groove is formed with outer semicolumn groove is equiped with needle roller, in this way, i.e.
It can be achieved to manually adjust the technical purpose that bar 3 moves axially relative to screw rod 7 and manually adjusts bar 3 and the synchronous axial system of screw rod 7.
Further, the housing of the present embodiment includes upper shell 22, is fixedly mounted on the and of lower house 23 of the lower end of upper shell 22
The closure 24 being sleeved on outside screw rod, upper shell 22, lower house 23 and closure 24 collectively constitute closed shell structure.Disc spring
1 is arranged in upper shell, and piston 5 and outer piston 6 are arranged in lower house, and on lower house respectively with piston 5 and outer piston 6 one
One is correspondingly provided with the hydraulic interface for connecting hydraulic means.
Further, push-plate 18 is provided between the lower end of screw rod 7 and pressure arm 11, and is provided between push-plate 18 and screw rod 7 resistance to
Tribology saddle；It is fixedly mounted to be provided with pressure arm 11 and is used to be engaged section contact 19 with push-plate 18, contact 19 is towards pushing away
The top surface of disk is sphere.The arrestment mechanism of the present embodiment includes sliding pin 10, the both ends of sliding pin 10 respectively with its suit that is slidably matched
Provided with the first brake block 9 on caliper 8 and the second brake block 9 ' being engaged with pressure arm 11, it is set with sliding pin 10
Provided with the spring 20 between the first brake block 9 and the second brake block 9 ', and between the first brake block 9 and the second brake block 9 '
Provided with brake disc.Pressure arm 11 is provided with the ball type of contact surface 21 for being used for being engaged and raise up with the second brake block 9 ',
Ball type of contact surface 21 is arranged to two and is located at the both ends of the second brake block 9 ' respectively.
Specifically, end face bearing 25,25 sets of end face bearing are provided between the both ends of the pressure arm 11 of the present embodiment and caliper 8
In rotating shaft 12, pressure arm 11 can be made more steady relative to the rotation of rotating shaft 12.
The hydraulic parking brake of the present embodiment, mended by installing the brake clearance being engaged with pressure arm on caliper
Mechanism is repaid, the adjustment in EPB gap can be realized using brake clearance adjustment mechanism, its principle is as follows：
When parking braking, in the presence of disc spring, the spacing anti-rotation structure between bearing block and adjustment mandrel combines and to tune
Whole mandrel applies power axially downwards, and in the presence of spacing anti-rotation structure, adjustment mandrel can not rotate, and power drives axially downwards for this
Adjustment mandrel, bearing assembly and screw rod move downwardly together, and driving pressure arm rotates, and realizes parking braking；
When braking release, under normal circumstances, piston applies upward axial force, driving in the presence of hydraulic pressure to adjustment mandrel
Adjustment mandrel, screw rod and bearing block move upwards；
But in the case where brake clearance is excessive, lasso is contacted with bearing assembly so that the combination of rotation stopping structure, bearing assembly
It can not rotate；The spacing cooperation between the outer confined planes of piston in parking braking, piston driving bearing first due to bearing block
Upwards after one segment distance of motion, bearing assembly coordinates with lasso for seat, adjustment mandrel, screw rod and bearing assembly, it is impossible to mobile rotation,
Bearing block is caused to separate failure with adjusting the spacing anti-rotation structure of mandrel, then interior confined planes and the driving adjustment of end face rolling bearing
Mandrel moves upwards, in the presence of adjustment mandrel and bearing assembly and thread matching structure between screw rod, adjusts core
Axle rotates, and screw rod moves down, because the externally threaded pitch being arranged on adjustment mandrel is more than the outer spiral shell being arranged on screw rod
The pitch of line, now screw rod relative to adjustment mandrel be moved downwardly a certain distance, realize backlash compensation.
The hydraulic parking brake of the present embodiment has further the advantage that：
1st, by setting outer piston, it is ensured that outer piston can be used to realize the release of parking braking after piston hydraulic pressure thrashing,
Ensure that brake can run well, reliability is higher；
After the 2nd, if hydraulic system fails, the also available release for manually adjusting the movement of bar drive screw and realizing parking braking；
3rd, set contact and push-plate to be engaged on pressure arm by setting, and the top surface of contact is arranged to sphere, together
When on pressure arm set ball type of contact surface be engaged with the second brake block, contact original using the point between sphere and plane
Reason, it can be ensured that braking motion is steady, has no abnormal sound.
Embodiment described above is only to absolutely prove preferred embodiment that is of the invention and being lifted, protection model of the invention
Enclose not limited to this.The equivalent substitute or conversion that those skilled in the art are made on the basis of the present invention, in the present invention
Protection domain within.Protection scope of the present invention is defined by claims.
Claims (10)
- A kind of 1. brake clearance compensation mechanism, it is characterised in that：Including housing, the center of the housing is provided with to be slidably matched with it Screw rod, set is equiped with the adjustment mandrel coordinated with its screw thread on the screw rod, is set on the periphery wall on the adjustment mandrel top There is external screw thread, the top set of the adjustment mandrel is equiped with the bearing assembly coordinated with its screw thread, is set with outside the bearing assembly Provided with the bearing block for rotating cooperation, the bearing block single-degree-of-freedom is slidably installed in the housing；The tune Spacing anti-rotation structure is provided between the bottom of whole mandrel and the bottom of the bearing block, and is provided with the housing and is sleeved on institute State the disc spring that bearing block is outer and combines the spacing anti-rotation structure between the bearing block and the adjustment mandrel, the dish Spring passes through axially downwards power of the spacing anti-rotation structure to the adjustment mandrel application axially downwardly；Position is provided with the housing Piston below the adjustment mandrel and for applying from axially upwardly power axially upwards to the adjustment mandrel, the adjustment End face rolling bearing is provided between mandrel and the piston；The piston be provided with respectively with the bearing block and the adjustment core The outer confined planes and interior confined planes that axle coordinates, and the interior confined planes are in outer confined planes cooperation spacing with the bearing block There is gap between the adjustment mandrel；Also be fixed with the housing and the lasso above the bearing assembly, the lasso and the bearing assembly it Between be provided with rotation stopping knot when the lasso and the bearing assembly are engaged for preventing the bearing assembly rotation Structure；The lower end extension of the screw rod is stretched out outside the housing, is arranged on the external screw thread adjusted on mandrel and is arranged on institute The externally threaded rotation direction stated on screw rod is identical, and the externally threaded pitch being arranged on the adjustment mandrel is described more than being arranged on Externally threaded pitch on screw rod.
- 2. brake clearance compensation mechanism according to claim 1, it is characterised in that：The bottom of the adjustment mandrel is provided with outer The male cone (strobilus masculinus) that footpath gradually increases along direction from top to bottom, the bottom of the bearing block is provided with coordinate with the male cone (strobilus masculinus) in The conical surface；The rotation stopping structure is the tapered face fit structure being arranged between the bearing assembly and the lasso.
- 3. brake clearance compensation mechanism according to claim 1, it is characterised in that：The bearing assembly and the bearing block Between be provided with light pearl spring detent.
- 4. brake clearance compensation mechanism according to claim 1, it is characterised in that：Outside the piston also set be equiped with it is available In the outer piston for applying axially upwardly power axially upwards to it.
- 5. brake clearance compensation mechanism according to claim 4, it is characterised in that：The housing includes upper shell, fixation Lower house and the closure that is sleeved on outside the screw rod installed in the upper shell lower end, the disc spring are arranged on the upper casing In vivo, the piston and outer piston are arranged in the lower house, and on the lower house respectively with the piston and described outer Piston corresponds the hydraulic interface for being provided with and being used for connecting hydraulic means.
- 6. according to the brake clearance compensation mechanism described in claim any one of 1-5, it is characterised in that：The upper end end of the screw rod Face is provided with blind hole, is provided with the blind hole and manually adjusts bar, the bar that manually adjusts is slidably matched with the blind hole, and described Manually adjust bar and the screw rod synchronous axial system.
- 7. brake clearance compensation mechanism according to claim 6, it is characterised in that：On the periphery wall for manually adjusting bar Annular is laid with interior semicolumn groove, is corresponded on the inwall of the blind hole with the interior semicolumn groove and is provided with outer semicolumn Groove, the cylinder groove interpolation that the interior semicolumn groove is formed with the outer semicolumn groove are equiped with needle roller.
- A kind of 8. hydraulic parking brake, it is characterised in that：Including bracket assembly and caliper, the bracket assembly is provided with post Pin, the caliper, which is slidably matched, to be sleeved on the pin, and the caliper is provided with rotating shaft, and cooperation is rotated in the rotating shaft Set is equiped with pressure arm, and the both ends of the pressure arm are located at the both sides of the rotating shaft, and one end of the pressure arm and institute respectively State and be provided with arrestment mechanism between caliper；The brake cabin being provided with as described in claim any one of 1-7 is fixedly mounted on the caliper Gap compensation mechanism, and the other end of the pressure arm is engaged with the screw rod lower end.
- 9. hydraulic parking brake according to claim 8, it is characterised in that：The lower end of the screw rod and the pressure arm Between be provided with push-plate, and wear-resisting lubrication part is provided between the push-plate and the screw rod；It is fixedly mounted and is provided with the pressure arm For being engaged a section contact with the push-plate, the contact element surface to the top surface of the push-plate be sphere.
- 10. hydraulic parking brake according to claim 8, it is characterised in that：The arrestment mechanism includes sliding pin, described The both ends of sliding pin be equiped with respectively with its sliding fiting sleeve the first brake block on the caliper and with the pressure arm The second brake block being engaged, set is equiped with the bullet between first brake block and the second brake block on the sliding pin Spring, and brake disc is provided between first brake block and the second brake block；The pressure arm, which is provided with, to be used for and described second The ball type of contact surface that brake block is engaged and raised up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710751691.2A CN107524737B (en) | 2017-08-28 | 2017-08-28 | Hydraulic parking brake and braking clearance compensation mechanism thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710751691.2A CN107524737B (en) | 2017-08-28 | 2017-08-28 | Hydraulic parking brake and braking clearance compensation mechanism thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107524737A true CN107524737A (en) | 2017-12-29 |
| CN107524737B CN107524737B (en) | 2023-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710751691.2A Active CN107524737B (en) | 2017-08-28 | 2017-08-28 | Hydraulic parking brake and braking clearance compensation mechanism thereof |
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| CN (1) | CN107524737B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110345182A (en) * | 2019-05-28 | 2019-10-18 | 中国北方车辆研究所 | A kind of holding brake device applied to In-wheel-motor driving vehicle |
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| CN105485224A (en) * | 2016-01-14 | 2016-04-13 | 枣庄泰德机械有限公司 | Automatic brake clearance adjustment mechanism assembly |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110345182A (en) * | 2019-05-28 | 2019-10-18 | 中国北方车辆研究所 | A kind of holding brake device applied to In-wheel-motor driving vehicle |
| CN110345182B (en) * | 2019-05-28 | 2020-11-20 | 中国北方车辆研究所 | Parking braking device applied to electric wheel driven vehicle |
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| CN107524737B (en) | 2023-08-01 |
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