CN105422689A - Thread adjusting and locking mechanism - Google Patents
Thread adjusting and locking mechanism Download PDFInfo
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- CN105422689A CN105422689A CN201510888731.9A CN201510888731A CN105422689A CN 105422689 A CN105422689 A CN 105422689A CN 201510888731 A CN201510888731 A CN 201510888731A CN 105422689 A CN105422689 A CN 105422689A
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- piston
- locking
- locking mechanism
- brake disc
- friction plate
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Abstract
The invention discloses a thread adjusting and locking mechanism, and belongs to the technical field of transmission devices. The thread adjusting and locking mechanism comprises a brake clamp, a piston, a brake disc, a friction plate, a limiting locking device and a transmission device. The piston is connected with the brake clamp, a thread is arranged in the piston, and a cavity A is formed in the joint of the piston and the brake clamp. The brake disc and a wheel are fixedly connected. The friction plate and the brake clamp are fixedly connected. The friction plate is arranged between the piston and the brake disc. The limiting locking device is arranged in the piston. The limiting locking device is in threaded fit with the piston. The transmission device is connected with the brake clamp, and the transmission device makes contact with the piston. According to the thread adjusting and locking mechanism, the geometric structure principle is fully utilized, the reliability and precision of a locking structure during gap adjustment are improved, the thread adjusting and locking mechanism is simple in structure, convenient to operate and reliable in locking, and the gap change is small in long-time usage.
Description
Technical field
The present invention relates to transmission art field, particularly a kind of threaded adjustment locking mechanism.
Background technique
Disk type braker requires that friction plate has automatic compensation function.When after friction plate or brake disc wear, between friction plate and brake disc, there is gap, affect braking effect.Disk type braker with automatic compensation function then can make friction plate move to the individual event of brake disc side by service brake, eliminates brake clearance; And friction plate can not oppositely movement after the operating mode lower stress such as parking, improve parking braking power.Realizing above function, just requiring that the nut of break leaves point-device gap when assembling: when gap is too small, the frictional force of nut and piston is excessive, and friction plate cannot move to brake disc side, and brake clearance cannot be eliminated, and affects braking effect; During excesssive gap, nut rocks in piston, the space causing piston to have being moved to the left, and during parking braking, brake disc cannot pressing friction sheet, affects parking braking effect.
What current threaded adjustment mechanisms was comparatively conventional mainly contains two kinds, and one adds spacer adjustment, and this method needs the actual size first knowing relative dimensions, by calculating the thickness of spacer, then is compressed by spacer with pressing plate.If it is too tight or too loose to have assembled rear discovery gap, then need to dismantle pressing plate, readjust, adjustment process wastes time and energy; Another regulating mechanism is then by threaded adjustment, adjustment part is with jagged, has adjusted rear bending lock banking stop locking.The subject matter of this mechanism is that Adjustment precision is not enough, this is because after adjustment completes, the breach possibility of part cannot just to lock banking stop, lock banking stop cannot bending, part can only be continued adjustment, be not best clearance after locking, this mounting type Adjustment precision is poor.
Summary of the invention
The invention provides a kind of threaded adjustment locking mechanism, solve or partly solve adjusting play mechanism complexity in prior art, adjust technical problem that is loaded down with trivial details, locking precision deficiency.
For solving the problems of the technologies described above, the invention provides a kind of threaded adjustment locking mechanism and comprising: braking clamp body; Piston, is fixedly connected with described braking clamp body, and described internal piston offers screw thread, and described piston and described braking clamp body joint offer A chamber; Brake disc, is fixedly connected with described wheel; Friction plate, is fixedly connected with described braking clamp body, and described friction plate is arranged between described piston and described brake disc; Limiting locking device, be arranged in described piston, described limiting locking device coordinates with described piston thread; Transmission device, is connected with described braking clamp body, described transmission device and described piston contact; Wherein, when needs are braked, hydraulic pressure injects described A chamber, promote described piston and described friction plate, described friction plate is made to compress described brake disc, described in described piston driving, limiting locking device compresses described transmission device, makes described transmission device carry out rotation axial motion and compresses described piston; When carrying out parking braking, compress described brake disc, thrust passes to transmission device from described brake disc, makes to produce parking braking power between described brake disc, described friction plate.
Further, described piston offers draw-in groove, circumferential direction is divided into four quadrants by described draw-in groove, and each quadrant comprises two breach, and described limiting locking device is fastened in described breach.
Further, described limiting locking device comprises: locking plate, coordinates with described piston thread; Position-arresting disk, is fixedly connected with described locking plate.
Further, described locking plate outside offers outside thread, and the outside thread that described locking plate outside is offered offers screw thread with described internal piston and matches, and described locking plate end face offers groove.
Further, bearing is provided with between described locking plate and described piston.
Further, described position-arresting disk is provided with boss, described boss is fastened in described draw-in groove.
Further, described position-arresting disk end face is provided with locking gasket.
Further, described locking plate offers bolt hole, described position-arresting disk offers through hole, described bolt hole is corresponding with described through hole.
Further, described transmission device comprises: locking nut, is fixedly connected with described braking clamp body; Screw rod, is threaded with described locking nut; Nut, with described piston taper-face contact, described nut is fixedly connected with described screw rod by trapezoidal thread.
Further, threaded adjustment locking mechanism of the present invention also comprises: dust ring, is arranged between described piston and described friction plate; Oil sealing, is arranged between described piston and described braking clamp body.
Threaded adjustment locking mechanism provided by the invention is when needs are braked, hydraulic pressure injects A chamber, promotes piston and friction plate, makes friction plate compress brake disc, piston driving limiting locking device compresses transmission device, makes transmission device carry out rotation and axial motion clamping piston; When carrying out parking braking, compress brake disc, thrust passes to transmission device from described brake disc, transmission device can not rotate, also displacement is not had, produce stronger parking braking power between brake disc and friction plate, fully used Geometric structure principium, improve reliability and the precision of keying structure when gap adjusts, not only structure is simple, eliminate spacer, reduce assembling difficulty, avoid workman using feel as the foundation of adjusting to the right place, reduce workman's assembly error, easy to operate, reliable lock simultaneously, long-time use gap change is little.
Accompanying drawing explanation
The structural representation of the threaded adjustment locking mechanism that Fig. 1 provides for the embodiment of the present invention;
Fig. 2 is the cross-sectional view of the piston of threaded adjustment locking mechanism in Fig. 1;
Fig. 3 is the side view of the piston of the threaded adjustment locking machine in Fig. 1;
Fig. 4 is the structural representation of the position-arresting disk of threaded adjustment locking machine in Fig. 1;
Fig. 5 is the structure schematic diagram of the locking plate knot of threaded adjustment locking machine in Fig. 1.
Embodiment
See Fig. 1, a kind of threaded adjustment locking mechanism that the embodiment of the present invention provides, is connected with wheel; Described threaded adjustment locking mechanism comprises: braking clamp body 3, piston 9, friction plate 11, brake disc 12, limiting locking device and transmission device.
Described piston 9 is fixedly connected with described braking clamp body 3, and described piston 9 inside offers screw thread, and described piston 9 offers A chamber 13 with described braking clamp body 3 joint.
Described brake disc 12 is fixedly connected with described wheel.
Described friction plate 11 is fixedly connected with described braking clamp body 3, and described friction plate 11 is arranged between described piston 9 and described brake disc 12.
Described limiting locking device is arranged in described piston 9, described limiting locking device and described piston 9 screw-thread fit.
Described transmission device is fixedly connected with described braking clamp body 3, and described transmission device contacts with described piston 9.
Wherein, when needs are braked, hydraulic pressure injects described A chamber 13, promote described piston 9 and described friction plate 11, described friction plate 11 is made to compress described brake disc 12, described piston 9 drives described limiting locking device to compress described transmission device, makes described transmission device carry out rotation axial motion and compresses described piston 9; When carrying out parking braking, compress described brake disc 12, thrust passes to transmission device from described brake disc 12, makes to produce parking braking power between described brake disc 12, described friction plate 11.
See Fig. 2-3, introduce the structure of piston 9 in detail.
Described piston 9 offers draw-in groove, and circumferential direction is divided into four quadrants by described draw-in groove, and each quadrant comprises two breach, and described limiting locking device is fastened in described breach.First breach of each quadrant once increases progressively 5 °, and second breach offsets 20 ° again on the basis of first breach, and the width of breach is also with tolerance.
See Fig. 4-5, introduce the structure of limiting locking device in detail.
Described limiting locking device comprises: locking plate 5 and position-arresting disk 4.
Described locking plate 5 coordinates with described piston thread.Described locking plate 5 outside offers outside thread, and the outside thread that described locking plate 5 outside is offered offers screw thread with described piston 9 inside and matches, and making locking plate 5 axially can promote driving mechanism advance, driving mechanism and piston 9 being compressed by rotatably compressing.Described locking plate 5 end face offers groove, is convenient to rotation and tightens.Be provided with bearing 6 between described locking plate 5 and described piston 9, between described piston 6 and described locking plate 5, then adopt bearing 6 to guarantee relative sliding.The original gap of described bearing 6 then relies on described position-arresting disk 4 to regulate with the relative rotation of described locking plate 5.
Described position-arresting disk 4 is fixedly connected with described locking plate 4.Particularly, in the present embodiment, described position-arresting disk 4 is fixedly connected with described locking plate 4 by bolt 14, in other embodiments, described position-arresting disk 4 by alternate manner as pivot pin etc. with as described in locking plate 4 be fixedly connected with.Described position-arresting disk 4 is provided with boss, and described boss is fastened in draw-in groove, and the draw-in groove that described boss and described piston 9 are offered adopts tolerance fit.Described position-arresting disk 4 end face is provided with locking gasket 15, carrys out bearing 6 described in locking by bolt 14 and locking gasket 15, and described lock washer 15 flange is locking.
Described locking plate 5 offers bolt hole, and described locking plate 5 end face is then have 4 bolts hole, and each tapped hole is separated by 45 ° and is evenly arranged.Described position-arresting disk 4 offers through hole, described position-arresting disk 4 has 8 holes, be divided into 2 groups, often organize employing and divide equally layout, between two groups, there is the augular offset of 40 ° position, hole, and described boss plays the differential seat angle of existence 5 ° between initial hole.Described through hole is aimed at described bolt hole, all bolts can be installed, described position-arresting disk 4 can use by tow sides, and described position-arresting disk 4 can be installed by angle changing and turn-over and positioning boss be put into draw-in groove, to ensure that described bolt hole is corresponding with described through hole.
Introduce the structure of transmission device in detail.
Described transmission device comprises: locking nut 1, screw rod 2 and nut 7.
Described locking nut 1 is fixedly connected with described braking clamp body 3.Particularly, in the present embodiment, described locking nut 1 is fixedly connected with described braking clamp body 3 by welding, in other embodiments, described locking nut 1 by alternate manner as pivot pin etc. with as described in braking clamp body 3 be fixedly connected with.
Described screw rod 2 is threaded with described locking nut 1.
Described nut 7 and described piston 9 taper-face contact, described nut 7 is connected with described screw rod 2 by trapezoidal thread.
Threaded adjustment locking mechanism of the present invention also comprises: dust ring 10 and oil sealing 8.
Described dust ring 10 is arranged between described piston 9 and described friction plate 11.Particularly, in the present embodiment, described dust ring 10 is arranged between described piston 9 and described friction plate 11 by bolt, in other embodiments, described dust ring 10 by alternate manner as pivot pin etc. be arranged on as described in piston 9 and as described between friction plate 11.
Described oil sealing 8 is arranged between described piston 9 and described braking clamp body 3.Particularly, in the present embodiment, described oil sealing 8 is arranged between described piston 9 and described braking clamp body 3 by bolt, in other embodiments, described oil sealing 8 by alternate manner as pivot pin etc. be arranged on as described in piston 9 and as described between braking clamp body 3.
Introduce the present invention in order to clearer, introduced from the using method of the embodiment of the present invention below.
Screw rod 2 is fixed on braking clamp body 3 by locking nut 1, and nut 7 is connected with screw rod 2 by trapezoidal thread.Simultaneously position-arresting disk 4, locking plate 5 and bearing 6 by spacing for nut 7 in piston 9.When needs are braked, hydraulic pressure injects A chamber, promotes piston 9 and friction plate 11, makes friction plate 11 compress brake disc 12 behind compression brake gap, produces braking force.Meanwhile, piston 9 drives locking plate to compress bearing 6 and nut 7, and its axial force can overcome nut 7 and the trapezoidal thread frictional force of screw rod 2, causes nut 7 to carry out rotation and axial motion clamping piston 9, therefore gapless during service brake.What nut 6 and piston 7 adopted is taper-face contact, then adopts bearing 6 to guarantee relative sliding between piston 9 and locking plate 5.The original gap of bearing 6 then relies on position-arresting disk 4 to regulate with the relative rotation of locking plate 5, and carrys out locking by bolt 14 and locking gasket 15.Therefore the adjustment of position-arresting disk 4 and locking plate 5 pairs of bearing playes needs very accurate: if excesssive gap, then this gap cannot be eliminated, and greatly affects parking braking effect; If gap is too little, frictional force becomes large, then when driving a vehicle, piston cannot freely rotate, and automatically can not eliminate piston 9 and the gap of friction plate 11, braking can be caused slow, the shortcoming that stopping distance strengthens, and therefore, gap adjustment needs and accurately, and will be easy to adjustment.After being tightened by locking plate 5, rollback several angle, ensures that nut 7 can flexible rotating.Adjust rear reply locking plate 5 to lock: position-arresting disk 4 has positioning boss, piston 9 has some draw-in grooves.Position-arresting disk 4 can be installed by angle changing and turn-over put into draw-in groove by positioning boss, to ensure that bolt hole on locking plate 5 can with the through-hole alignment on position-arresting disk 4, can install all bolts.After tighting a bolt, by locking for lock washer 2 flange, adjustment terminates.Eliminate spacer, reduce assembling difficulty, avoid workman using feel as the foundation of adjusting to the right place, reduce workman's assembly error, solve locking gasket 15 and teeth groove in prior art and do not align the problem readjusted causing gap, Adjustment precision is greatly improved.
Mechanism's locking principle is as follows: tighten when locking plate 5 and adjust back several angle φ
1(20 ° of < φ
1<30 °), need this locking plate 5 completely locked, ensure in the overall process normally worked at break, can not relatively rotate between locking plate 5 and piston 9 because of nut 7 stressed causing.Locking plate 5 has the bolt hole that four uniform, bolt 14 should limit the rotation of locking plate 5 through the position-arresting disk 4 that cannot rotate.Because tapped hole at an arbitrary position, therefore by appropriate design bolt hole aperture, through hole footpath and standard pitch diameter size, may ensure that bolt hole can deviation angle be φ in through hole in theory
2therefore (5 ° of < φ <6 °), as long as ensure that position-arresting disk 4 can realize mounting point n under multiple mounting modes
1∈ N
1(N
1be 5 °-360 °, and the integer can divided exactly by 5); Also just can ensure that the bolt hole of arbitrary position can construction bolt, and its maximum error is only 5 °, the outside thread pitch of locking plate 5 is Lmm, and therefore just calculating this mechanism, can to recall gap width be L × φ
1/ 360mm, and the error precision of adjustment is L × φ
2/ 360mm.Because 4 bolts hole of locking plate 5 are for dividing equally layout, and the through hole of position-arresting disk 4 is also one group with 4, often group divides equally layout, therefore circumference 360 ° can be divided into 4 quadrants, whether the hole only studying the locking plate in single quadrant can meet locking requirement 0 °-90 ° time, namely needs to meet hole and meets angle requirement n
2∈ N
2(N
2be 5 °-90 °, and the integer can divided exactly by 5).By the design of piston 9 end notches, can ensure that through hole is in n
3∈ N
3(N
3be 5 °-40 °, and the integer can divided exactly by 5); Simultaneously because position-arresting disk 4 exists the through hole that second group offsets 40 °, ensure that through hole physical location n
4∈ N
4(N
4be 45 °-80 °, and the integer can divided exactly by 5); Position-arresting disk 4 adopts symmetric design simultaneously, and during assembling, turnable is installed, then ensure that through hole n
5∈ N
5(N
5be 85 °-90 °, and the integer can divided exactly by 5) mounting point.To sum up, this mechanism, by the mounting type of adjustment position-arresting disk 4, can realize lead to the hole site n
6=n
3+ n
4+ n
5=n
2∈ N
2(N
2be 5 °-90 °, and the integer can divided exactly by 5), therefore can ensure locking requirement when bolt hole is at an arbitrary position.Work as φ
1be 25 °, φ
2be 5.7 °, pitch L is 1mm, and can ensure that the gap width adjusted is 0.08mm, the error precision of adjustment is up to 0.013mm.
When carrying out parking braking, parking and braking mechanism compresses brake disc 12, thrust passes to nut 7 from brake disc 12, thrust now suffered by nut 7 cannot overcome the bevel friction power between the frictional force of trapezoidal thread and nut 7 and piston 9, therefore nut 7 can not rotate, also do not have displacement, between brake disc 12 and friction plate 11, produce stronger parking braking power.Even if be subject to the change that larger axial force also can not affect gap, locking mechanism is rationally reliable.
It should be noted last that, above embodiment is only in order to illustrate technological scheme of the present invention and unrestricted, although with reference to example to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technological scheme of the present invention or equivalent replacement, and not departing from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (10)
1. a threaded adjustment locking mechanism, is connected with wheel; It is characterized in that, described threaded adjustment locking mechanism comprises:
Braking clamp body (3);
Piston (9), be fixedly connected with described braking clamp body (3), described piston (9) inside offers screw thread, and described piston (9) and described braking clamp body (3) joint offer A chamber (13);
Brake disc (12), is fixedly connected with described wheel;
Friction plate (11), is fixedly connected with described braking clamp body (3), and described friction plate (11) is arranged between described piston (9) and described brake disc (12);
Limiting locking device, is arranged in described piston (9), described limiting locking device and described piston (9) screw-thread fit;
Transmission device, is connected with described braking clamp body (3), and described transmission device contacts with described piston (9);
Wherein, when needs are braked, hydraulic pressure injects described A chamber (13), promote described piston (9) and described friction plate (11), described friction plate (11) is made to compress described brake disc (12), described piston (9) drives described limiting locking device to compress described transmission device, makes described transmission device carry out rotation axial motion and compresses described piston (9); When carrying out parking braking, compress described brake disc (12), thrust passes to transmission device from described brake disc (12), makes described brake disc (12), described friction plate produces parking braking power between (11).
2. locking mechanism according to claim 1, is characterized in that:
(9) offer draw-in groove to described piston, and circumferential direction is divided into four quadrants by described draw-in groove, and each quadrant comprises two breach, and described limiting locking device is fastened in described breach.
3. locking mechanism according to claim 2, is characterized in that, described limiting locking device comprises:
Locking plate (5), coordinates with described piston thread;
Position-arresting disk (4), is fixedly connected with described locking plate (4).
4. locking mechanism according to claim 3, is characterized in that:
Described locking plate (5) outside offers outside thread, and the outside thread that described locking plate (5) outside is offered offers screw thread match with described piston (9) inside, and described locking plate (5) end face offers groove.
5. locking mechanism according to claim 3, is characterized in that:
Bearing (6) is provided with between described locking plate (5) and described piston (9).
6. locking mechanism according to claim 3, is characterized in that:
(4) are provided with boss to described position-arresting disk, and described boss is arranged in described draw-in groove.
7. locking mechanism according to claim 3, is characterized in that:
Described position-arresting disk (4) end face is provided with locking gasket (15).
8. locking mechanism according to claim 3, is characterized in that:
(5) offer bolt hole to described locking plate, and (4) offer through hole to described position-arresting disk, and described bolt hole is corresponding with described through hole.
9. locking mechanism according to claim 1, is characterized in that, described transmission device comprises:
Locking nut (1), is fixedly connected with described braking clamp body (3);
Screw rod (2), is threaded with described locking nut (1);
Nut (7), with described piston (9) taper-face contact, described nut (7) is fixedly connected with described screw rod (2) by trapezoidal thread.
10. locking mechanism according to claim 1, is characterized in that, also comprises:
Dust ring (10), is arranged between described piston (9) and described friction plate (11);
Oil sealing (8), is arranged between described piston (9) and described braking clamp body (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510888731.9A CN105422689B (en) | 2015-12-04 | 2015-12-04 | A kind of threaded adjustment retaining mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510888731.9A CN105422689B (en) | 2015-12-04 | 2015-12-04 | A kind of threaded adjustment retaining mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105422689A true CN105422689A (en) | 2016-03-23 |
| CN105422689B CN105422689B (en) | 2017-11-14 |
Family
ID=55501141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510888731.9A Active CN105422689B (en) | 2015-12-04 | 2015-12-04 | A kind of threaded adjustment retaining mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105422689B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111350780A (en) * | 2018-12-24 | 2020-06-30 | 陕西重型汽车有限公司 | Disc brake actuator and control method thereof |
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| CN1376242A (en) * | 1998-11-17 | 2002-10-23 | Skf工程研究中心公司 | Screw actuator comprising a multi-purpose sleeve, and brake calliper |
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| CN103047325A (en) * | 2011-10-17 | 2013-04-17 | 日信工业株式会社 | Mechanical arresting disk brake |
| CN103573870A (en) * | 2012-07-20 | 2014-02-12 | 株式会社万都 | Disc brake |
| CN203442027U (en) * | 2013-05-10 | 2014-02-19 | 陈光华 | Hydraulic disc type parking brake |
| CN204284270U (en) * | 2014-12-01 | 2015-04-22 | 湖北航天技术研究院特种车辆技术中心 | A kind of hydraulic brake with parking braking |
-
2015
- 2015-12-04 CN CN201510888731.9A patent/CN105422689B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1376242A (en) * | 1998-11-17 | 2002-10-23 | Skf工程研究中心公司 | Screw actuator comprising a multi-purpose sleeve, and brake calliper |
| DE102011080939A1 (en) * | 2010-09-08 | 2012-03-08 | Continental Teves Ag & Co. Ohg | Gear motor driver for driving motor car brake, has gear box having worm-geared pinions supported with countershafts and bearing devices rotatable in housing, and auto-centering seal element is provided between engine shaft and housing |
| CN103047325A (en) * | 2011-10-17 | 2013-04-17 | 日信工业株式会社 | Mechanical arresting disk brake |
| CN103573870A (en) * | 2012-07-20 | 2014-02-12 | 株式会社万都 | Disc brake |
| CN203442027U (en) * | 2013-05-10 | 2014-02-19 | 陈光华 | Hydraulic disc type parking brake |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111350780A (en) * | 2018-12-24 | 2020-06-30 | 陕西重型汽车有限公司 | Disc brake actuator and control method thereof |
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| Publication number | Publication date |
|---|---|
| CN105422689B (en) | 2017-11-14 |
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