CN103939506A - Adjustable wedge type brake wheel cylinder - Google Patents
Adjustable wedge type brake wheel cylinder Download PDFInfo
- Publication number
- CN103939506A CN103939506A CN201410172272.XA CN201410172272A CN103939506A CN 103939506 A CN103939506 A CN 103939506A CN 201410172272 A CN201410172272 A CN 201410172272A CN 103939506 A CN103939506 A CN 103939506A
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- brake
- sleeve
- cylinder body
- adjusting sleeve
- push rod
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Abstract
The invention relates to a vehicle brake, in particular to an adjustable wedge type brake wheel cylinder which is especially suitable for being mounted and used on vehicles with loads larger than seven tons. The adjustable wedge type brake wheel cylinder comprises a cylinder body, the cylinder body is provided with sleeves stretching and moving left and right, a push rod is arranged between the ends of the two sleeves in the cylinder body from the outside of the upper portion of the cylinder body in an inserted mode, and the contact sections of the push rod and the ends of the sleeves are in a wedge shape. The brake function and the brake gap automatic compensation function are achieved, automatic compensation can be achieved after a gap between a brake shoe and a brake drum is abraded, and safety and reliability are achieved. The push rod is braked by a spring to directly act on a brake sleeve, the brake sleeve pushes brake screw rods towards the two sides, the brake screw rods directly act on the brake sleeve, and the brake force is increased.
Description
technical field
The present invention relates to a kind of vehicle brake, i.e. adjustable wedge-type wheel cylinder.Be particularly useful for installing and using on automobile that load-carrying is greater than seven tons.
Background technique
In the prior art, the braking principle of heavy-duty car drum brake is, the power producing by spring brake cylinder makes camshaft rotation, thereby the rotation of the cam on drive camshaft makes brake shoe expansion produce braking, braking force is lower, occur needing regular manual compensation behind gap, compensation effect is poor, and braking safety, reliability, stability need to solve.
Summary of the invention
The object of the invention is to provide for above-mentioned deficiency a kind of rational in infrastructure, gap is adjusted automatically, the adjustable wedge-type wheel cylinder of good braking effect.
Technical solution of the present invention is: adjustable wedge-type wheel cylinder, comprise cylinder body, and cylinder body stretches out mobile sleeve with left and right, in cylinder body, between two sleeve ends, from cylinder body top, is plugged with push rod, and push rod and sleeve ends contact-segment are wedge shape.
In such scheme, between push rod and cylinder body jack, there is stage clip.
In cylinder body between two sleeve ends respectively with the steel ball contacting with push rod effect.
Sleeve outer end is connected with brake screw.
Or in sleeve, being connected with side by side spiral adjusting sleeve and adjusting sleeve, engage by hook tooth spiral adjusting sleeve and adjusting sleeve butt end; On spiral adjusting sleeve outer surface, there is spiral chute, on corresponding cylinder body, be screwed into spiral fluted locating stud; Between adjusting sleeve 7 and brake screw, be threaded connection.
When the work of adjustable wedge-type wheel cylinder, provide on the braking voussoir that braking force acts directly on wheel cylinder by spring brake cylinder, braking voussoir promotes piston to both sides, acts directly on brake shoe.
Adjustable wedge-type wheel cylinder provides power by spring brake cylinder, promotes the braking voussoir of wheel cylinder, makes brake screw (or claiming spool) to two lateral movements, and propelling vehicle brake shoe produces braking with the mutual friction of brake drum phase.In the time of brake shoe and brake drum excesssive gap, under the effect of wheel cylinder " ratchet ", realize the compensation in gap.
Advantage of the present invention is: 1, stressed evenly, motion flexibly.2, there is braking brake function and braking gap automatic compensation function.3, after the gap between brake shoe and brake drum becomes greatly owing to wearing and tearing, can carry out auto-compensation, increase the safety reliability of braking.4, owing to having adopted wedge-type structure to transmit braking force, thereby make braking force obtain increase,
Below in conjunction with accompanying drawing, embodiments of the present invention are described in further detail.
Brief description of the drawings
Fig. 1 is structure diagram of the present invention.
Fig. 2 is adjusting sleeve structure diagram.
Fig. 3 is the left TV structure sketch of Fig. 2.
Fig. 4 is spiral adjusting sleeve structure diagram.
Fig. 5 is the left TV structure sketch of Fig. 4.
Fig. 6 is that Fig. 4 is along A-A sectional structure sketch.
Embodiment
Referring to Fig. 1-6, component title is as follows: 1-push rod, 2-protecting jacket; 3-cylinder body, 4-resilient pad, 5-hook tooth; 6-spiral adjusting sleeve, 7-adjusting sleeve, 8-sleeve; 9-dust-proof cover, 10-spiral chute, 11-locating stud; 12-pin spring, 14-positioning dowel, 16-push rod spring; 17-stage clip, 18-steel ball, 19-brake screw.
Referring to Fig. 1, adjustable wedge-type wheel cylinder, comprises cylinder body 3, and cylinder body 3 stretches out mobile sleeve 8 with left and right, in cylinder body 3, between two sleeve 8 ends, from cylinder body 3 tops, is plugged with push rod 1, and push rod 1 is wedge shape with sleeve 8 end contact-segments.Protecting jacket 2 is for installing front protection.Push rod spring 16 makes push rod 1 remain and contact with sleeve 8 with steel ball 18.Between push rod 1 and cylinder body 3 jacks, there is stage clip 17, be convenient to push rod 1 return.In cylinder body 3 between two sleeve 8 ends respectively with acting on push rod 1 steel ball 18 contacting, contact flexibly, reduces friction.Sleeve 8 outer ends are connected with brake screw 19, and brake screw 19 is connected with brake shoe.
Referring to Fig. 1-6, in order to realize braking gap auto-compensation, in sleeve 8, be installed with spiral adjusting sleeve 6 and adjusting sleeve 7 side by side, engage by hook tooth 5 spiral adjusting sleeve 6 and adjusting sleeve 7 butt ends.On spiral adjusting sleeve 6 outer surfaces, have spiral chute 10, have the locating stud 11 that is screwed into spiral chute 10 on corresponding cylinder body 3, locating stud 11, with pin spring 12, makes locating stud 11 and skewed slot 10 apical grafting all the time; Adjusting sleeve 7 outer ends are connected with brake screw 19.When push rod 1 promotes sleeve 8 and moves to left, because locating stud 11 and the effect of spiral chute 10 exist, force spiral adjusting sleeve 6 to inner rotary and rectilinear movement, promote that adjusting sleeve 7 is outer moves.When braking, spiral adjusting sleeve 6 and adjusting sleeve 7 are along tooth engagement, otherwise while braking return, are contrary tooth engagement, force adjusting sleeve 7 to be rotated and shift out, and realize backlash compensation.
Product input output ratio is 4.757.In the time that braking gap is greater than limit gauge fixed gap 0.7mm, this wheel cylinder can carry out backlash compensation automatically, and makes, between the brake shoe and brake drum after wearing and tearing, to remain in the gap 0.5mm-0.7mm zone of reasonableness of regulation.
Work as brake shoe plate abrasion, when braking gap increases, can (or claim ratchet mechanism by the screw mechanism of wheel cylinder inside, spiral adjusting sleeve 6, adjusting sleeve 7, locating stud 11 form) carry out automatic backlash compensation, braking gap is remained in the zone of reasonableness of regulation, do not need artificial adjustment, improved the safety reliability of automobile brake.
Gap automatic regulating device working principle:
While starting to brake, push rod 1 makes two steel balls 18 expand to the left and right under air chamber pressure, because symmetrical, moves leftwards and rightwards thereby promote sleeve 8.Be example taking the right side: sleeve 8 promotes adjusting sleeve 7 (or claiming right ratchet), brake screw 19 moves right (adjusting sleeve 7 is threaded with brake screw 19).In the process moving right in adjusting sleeve 7, due to the effect of locating stud 11, spiral chute 10, spiral adjusting sleeve 6 (or claiming left ratchet 6) is also forced to turn clockwise in moving right with sleeve 8.Now spiral adjusting sleeve 6 belongs to along tooth relation with the ratchet of adjusting sleeve 7, and adjusting sleeve 7 can not rotate due to the frictional force of brake screw 19 to it.
After end of braking, brake screw 19, adjusting sleeve 7, spiral adjusting sleeve 6, sleeve 8 under the effect of return spring (having two return springs in brake shoes) to left movement, spiral adjusting sleeve 6 is simultaneously because locating stud 11 and self spiral fluted effect are rotated counterclockwise, now spiral adjusting sleeve 6 belongs to contrary tooth relation with the ratchet of adjusting sleeve 7, now spiral adjusting sleeve 6 can drive adjusting sleeve 7 to rotate, be equivalent to brake screw 19 to outward turning one segment distance, thereby carry out clearance automatic compensation.
Braking: move down → steel ball of push rod 1 18 is with moving sleeve 8 to shift out → drive adjusting sleeve 7, shift out → propelling vehicle of brake screw 19 brake shoe produces braking with the mutual friction of brake drum phase.Otherwise move on push rod 1 → sleeve 8 is retracted → driven, and to drive adjusting sleeve 7 to do in rotary moving for rotate → spiral of spiral adjusting sleeve 6 adjusting sleeve 6, be equivalent to brake screw 19 to outward turning one segment distance, realize backlash compensation.
Function: gap automatic regulating device can be adjusted automatically in time, the gap increasing by wearing and tearing.It belongs to Automatic continuous adjusting, and brake clearance is ensured all the time in scope of design, ensures traffic safety.
Adjustable wedge-type wheel cylinder, by for break factory and vehicle bridge factory support the use, has been filled up domestic blank, can make main engine factory reduce costs.
Describe above, just the specific embodiment of the present invention, various not illustrating is construed as limiting flesh and blood of the present invention.
Claims (5)
1. an adjustable wedge-type wheel cylinder, it is characterized in that comprising cylinder body (3), cylinder body (3) stretches out mobile sleeve (8) with left and right, in cylinder body (3), between two sleeves (8) end, from cylinder body (3) top, be plugged with push rod (1), push rod (1) is wedge shape with sleeve (8) end contact-segment.
2. according to adjustable wedge-type wheel cylinder claimed in claim 1, it is characterized in that there is stage clip (17) between push rod (1) and cylinder body (3) jack.
3. according to the adjustable wedge-type wheel cylinder described in claim 1 or 2, it is characterized in that in cylinder body (3) between two sleeves (8) end respectively with acting on push rod (1) steel ball (18) contacting.
4. according to adjustable wedge-type wheel cylinder claimed in claim 3, it is characterized in that sleeve (8) outer end is connected with brake screw (19).
5. according to adjustable wedge-type wheel cylinder claimed in claim 3, it is characterized in that being connected with side by side spiral adjusting sleeve (6) and adjusting sleeve (7) in sleeve (8), spiral adjusting sleeve (6) and adjusting sleeve (7) butt end are by hook tooth (5) engagement; On spiral adjusting sleeve (6) outer surface, there is spiral chute (10), on corresponding cylinder body (3), have the locating stud (11) that is screwed into spiral chute (10); Adjusting sleeve (7) outer end has been threaded connection brake screw (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410172272.XA CN103939506A (en) | 2014-04-28 | 2014-04-28 | Adjustable wedge type brake wheel cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410172272.XA CN103939506A (en) | 2014-04-28 | 2014-04-28 | Adjustable wedge type brake wheel cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103939506A true CN103939506A (en) | 2014-07-23 |
Family
ID=51187322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410172272.XA Pending CN103939506A (en) | 2014-04-28 | 2014-04-28 | Adjustable wedge type brake wheel cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103939506A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114962495A (en) * | 2022-05-10 | 2022-08-30 | 江苏凯迅达高铁传动技术开发有限公司 | Wheel cylinder lubricating system for wedge brake |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86108224A (en) * | 1985-12-20 | 1987-07-08 | 洛克威尔戈尔德有限公司 | Automobile drum brake |
| EP0261903A2 (en) * | 1986-09-26 | 1988-03-30 | LUCAS INDUSTRIES public limited company | Wedge and roller actuator |
| CN1421627A (en) * | 2001-11-22 | 2003-06-04 | 日清纺绩株式会社 | Brake cylinder |
| CN2648172Y (en) * | 2003-07-10 | 2004-10-13 | 浙江亚太机电股份有限公司 | Self-regulating gap wedge type pump |
| CN2687416Y (en) * | 2003-12-19 | 2005-03-23 | 中国重型汽车集团有限公司 | Dual-way forced wedge brake |
| CN2916251Y (en) * | 2005-12-22 | 2007-06-27 | 江苏恒力制动器制造有限公司 | Brake clearance auto-adjusting mechanism |
| CN201730984U (en) * | 2010-07-27 | 2011-02-02 | 泸州开士乐工程技术有限责任公司 | Brake |
-
2014
- 2014-04-28 CN CN201410172272.XA patent/CN103939506A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86108224A (en) * | 1985-12-20 | 1987-07-08 | 洛克威尔戈尔德有限公司 | Automobile drum brake |
| EP0261903A2 (en) * | 1986-09-26 | 1988-03-30 | LUCAS INDUSTRIES public limited company | Wedge and roller actuator |
| CN1421627A (en) * | 2001-11-22 | 2003-06-04 | 日清纺绩株式会社 | Brake cylinder |
| CN2648172Y (en) * | 2003-07-10 | 2004-10-13 | 浙江亚太机电股份有限公司 | Self-regulating gap wedge type pump |
| CN2687416Y (en) * | 2003-12-19 | 2005-03-23 | 中国重型汽车集团有限公司 | Dual-way forced wedge brake |
| CN2916251Y (en) * | 2005-12-22 | 2007-06-27 | 江苏恒力制动器制造有限公司 | Brake clearance auto-adjusting mechanism |
| CN201730984U (en) * | 2010-07-27 | 2011-02-02 | 泸州开士乐工程技术有限责任公司 | Brake |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114962495A (en) * | 2022-05-10 | 2022-08-30 | 江苏凯迅达高铁传动技术开发有限公司 | Wheel cylinder lubricating system for wedge brake |
| CN114962495B (en) * | 2022-05-10 | 2024-04-26 | 江苏凯迅达高铁传动技术开发有限公司 | Wheel cylinder lubricating system for wedge brake |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140723 |