CN203404294U - Brake clearance compensation mechanism based on air-pressure disk type brake - Google Patents
Brake clearance compensation mechanism based on air-pressure disk type brake Download PDFInfo
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- CN203404294U CN203404294U CN201320392924.1U CN201320392924U CN203404294U CN 203404294 U CN203404294 U CN 203404294U CN 201320392924 U CN201320392924 U CN 201320392924U CN 203404294 U CN203404294 U CN 203404294U
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- gear
- adjusting sleeve
- brake clearance
- compensation mechanism
- clearance compensation
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Abstract
The utility model relates to a brake clearance compensation mechanism based on an air-pressure disk type brake. The brake clearance compensation mechanism comprises a transmission shaft, a one-way clutch, a gear transmission unit, a spiral pushing unit and a pressure seat. The transmission shaft, the one-way clutch, the gear transmission unit, the spiral pushing unit and the pressure seat are used for compensating the brake clearance. The transmission shaft is connected with the input end of the gear transmission unit through the one-way clutch in a transmission mode so that the gear transmission unit can do transmission in one direction, the spiral pushing unit is arranged on the pressure seat, the output end of the spiral pushing unit is connected with a pushing disk, the output end of the gear transmission unit is in transmission connection with the input end of the spiral pushing unit so that the output end of the spiral pushing unit can do spiral and axial movement in one direction, and the pushing disk is pushed to move for brake clearance complementation. The brake clearance compensation mechanism has the advantages that brake clearance complementing rotation can be effectively separated from other rotation, as a result, other movement can not interfere with the brake clearance complementation, and adjustment of the brake clearance is accurate; meanwhile, the pushing disk is stably pushed, so that the clearance complementation is balanced, and the braking performance is stable.
Description
Technical field
The utility model relates to air-pressure disc brake, relate in particular in this break and increase because the reasons such as brake pad wearing and tearing cause brake clearance, and need compensate the gap increasing, make it to return to a kind of brake clearance compensation mechanism based on air-pressure disc brake of setting gap.
Background technique
Existing air-pressure disc brake, the thrust direction of its brake chamber is axially to promote, the clearance adjustment mechanism that includes brake clearance sensing is placed in the caliper of break, be subject to thrust direction and caliper structure influence, braking moment can not increase, affect the velocity ratio of braking force, restricted the raising of braking force, often make car load braking force not reach desired value.
Summary of the invention
The purpose of this utility model is to overcome the deficiency of above-mentioned prior art, and a kind of a kind of brake clearance compensation mechanism based on air-pressure disc brake corresponding to having larger braking force velocity ratio is provided.
Above-mentioned purpose realizes by following technical proposals.
Described brake clearance compensation driving mechanism, be placed in push-plate one side of described break, this mechanism comprises the transmission shaft that brake clearance is compensated, overrunning clutch, gear transmission unit, spiral pushing unit and pressure seat, described transmission shaft is by the be in transmission connection input end of gear transmission unit of described overrunning clutch, make this gear transmission unit do the transmission of single direction, described spiral pushing unit is placed on described pressure seat, the output terminal of this spiral pushing unit connects described push-plate, the be in transmission connection input end of spiral pushing unit of the output terminal of gear transmission unit, make the output terminal of spiral pushing unit do screw axis to the moving axially of single direction, promote push-plate and do the movement of brake clearance compensation.
The further design of described brake clearance compensation driving mechanism is, described gear transmission unit comprises input gear, output gear and transition gear, between described input gear and output gear, by least one transition gear, carries out engagement driving.
The further design of described brake clearance compensation driving mechanism is, each gear of described gear transmission unit rotates and is arranged on a gear stand, and this gear stand is placed in a side of described pressure seat.
The further design of described brake clearance compensation driving mechanism is, described transition gear and output gear have respectively two, and the transition gear that place by symmetry respectively the symmetrical both sides of described input gear carries out engagement driving with the symmetrical output gear of placing.
The further design of described brake clearance compensation driving mechanism is, described transmission shaft connects input gear by overrunning clutch, to realize the transmission to the single direction of described gear transmission unit.
The further design of described brake clearance compensation driving mechanism is, described overrunning clutch is unilateral bearing.
The further design of described brake clearance compensation driving mechanism is, described spiral pushing unit comprises adjusting sleeve and screw rod, described adjusting sleeve is movably connected on described pressure seat, adjusting sleeve center is provided with screw, described screw rod is screwed in this screw, adjusting sleeve or screw rod are connected with described output gear, and the adjusting sleeve one end that is rotatably connected in the screw rod of adjusting sleeve or is rotatably connected in screw rod is connected with described push-plate.
The further design of described brake clearance compensation driving mechanism is, described pressure seat is provided with symmetrically arranged adjustment trepanning, and described adjusting sleeve is placed in adjusts trepanning.
The further design of described brake clearance compensation driving mechanism is, described adjusting sleeve is rotatably connected in described adjustment trepanning and with output gear and is connected, screw rod is screwed in screw corresponding to adjusting sleeve, one end is connected with push-plate, when output gear drives adjusting sleeve to rotate, screw rod drives push-plate to axially move.
The further design of described brake clearance compensation driving mechanism is, described adjusting sleeve is slidably connected in described adjustment trepanning, one end is connected with push-plate, screw rod is screwed in screw corresponding to adjusting sleeve, one end is connected with output gear, when output gear drives bolt rotary, adjusting sleeve drives push-plate to axially move.
The utility model rotates the brake clearance compensation of transmission shaft by overrunning clutch and other rotations are carried out effectively separatedly, has guaranteed that other rotate can cause interference to brake clearance compensation, and make brake clearance adjustment accurate, braking maneuver is reliable; The spiral unit that simultaneously the utility model comes transmission symmetry to distribute by being symmetrical arranged the gear transmission unit of gear, more steady to the promotion of push-plate like this, thus make the compensation in gap more balancedly, guaranteed the stable of braking ability.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model break.
Fig. 2 is the A-A sectional view of break shown in Fig. 1.
Fig. 3 is the structural representation that the upper set adjustment tank of the bevel gear on passing shaft matches with rotating shaft upper setting block.
Fig. 4 is the schematic diagram that adjustment block T1 and adjustment tank T2 exist gap μ.
Fig. 5 is the schematic diagram of the gap delta between brake disc and brake pad.
Schematic diagram when Fig. 6 is adjustment block shake-up adjustment tank.
Fig. 7 is the structural representation of gear stand.
Fig. 8 is equipped with the gear stand shown in Fig. 1 of input gear and unilateral bearing.
In figure, 1 pressure seat, 2 rotating shafts, 2a bevel gear, 3 transmission shafts, 4 bevel gears, 5 gear transmission units, 5a input gear, 5c output gear, 5b transition gear, 5d gear stand, 5d1 dunnage, 5d2 rivet, 5d3 rotating shaft, 5d11 the first structure hole, 5d12 the second structure hole, 6 overrunning clutchs, 7 spiral pushing units, 7a adjusting sleeve, 7b screw rod, 9 bearings, 100 supports, 101 guide pin bushings, 103 adjust arm, 104 brake discs, 105 calipers, 106 brake pads, 107 push-plates, 108 upper end caps, T1 adjustment block, T2 adjustment tank.
Embodiment
Contrast Fig. 1,2, brake clearance compensation driving mechanism of the present utility model, the push-plate 107 Yi Ce，Gai mechanisms that are placed in described break comprise transmission shaft 3, overrunning clutch 6, gear transmission unit 5, spiral pushing unit 7 and pressure seat 1.Transmission shaft 3 is by the be in transmission connection input end of gear transmission unit 5 of overrunning clutch 6, make gear transmission unit 5 do the transmission of single direction, spiral pushing unit 7 is placed on pressure seat 1, the output terminal of this spiral pushing unit 7 connects push-plate 107, the be in transmission connection input end of spiral pushing unit 7 of the output terminal of gear transmission unit 7, make the output terminal of spiral pushing unit do screw axis to the moving axially of single direction, promote the movement that push-plate is done brake clearance compensation.
The rotating shaft that above-mentioned transmission shaft 3 rotates when to be brake clearances increase and surpass setting value because of wearing and tearing, transmits by this transmission shaft 3 physical quantity that wearing clearance increases, to described gap is compensated.Transmission to the wearing clearance increasing can have various ways, and the present embodiment adopts adjustment block T1 as shown in Figure 3 and the cooperation of adjustment tank T2 to transmit.Adjustment block T1 is arranged on and adjusts in the rotating shaft 2 that arm 103 is connected, and adjusts arm 103 and is driven by the push rod 108 of brake chamber, during braking, by push rod 108, by adjusting arm 103, is promoted transmission shafts 3 and rotates; Adjustment tank T2 can be arranged on one and be set on the bevel gear 2a of rotating shaft 2, and one end of rotating shaft 2 is fixed on pressure seat 1, bevel gear 2a and bevel gear 4 engagements that are connected on transmission shaft 3.Between adjustment block T1 and adjustment tank T2, have cooperatively interacting of gap μ, refer to Fig. 4, gap μ should with brake disc 104 and brake pad 106 between gap delta (referring to Fig. 5) corresponding.During braking, adjust arm 103 and promote to rotate in rotating shaft 2, because rotating shaft 2 is provided with eccentric disc 2b, when rotating shaft 2 is rotated, eccentric disc 2b promotes pressure seat 1 and push-plate 107 presses to brake disc 104, brakes.Under normal circumstances, the rotation of rotating shaft 2, adjustment block T1 is rotated in adjustment tank T2, can not touch adjustment tank T2 and rotate therewith, only have when the gap of brake disc 104 and brake pad 106 increases because of wearing and tearing, the rotation angle of rotating shaft 2 increases, the rotation angle of adjustment block T1 is increased over gap μ, adjustment block T1 touches adjustment tank T2(and sees Fig. 6) make bevel gear 2a do rotating in same direction with rotating shaft 2, by the engagement of bevel gear 2a and bevel gear 4, transmission shaft 3 is rotated.
For the rotation of transmission shaft 3 is passed, and then promote the wearing clearance that push-plate 107 compensates increase, adopted gear transmission unit 5, this gear unit comprises input gear 5a, output gear 5c and transition gear 5b.Between input gear 5a and output gear 5c, by least one transition gear 5b, carry out engagement driving.
It is upper that each gear in said gear gear unit 5 is arranged on a gear stand 5d, refers to Fig. 6, Fig. 7.This gear stand 5d is arranged on a side of pressure seat 1, it is mainly comprised of two dunnage 5d1 and some rivet 5d2, the parallel placement of two dunnage 5d1, is spaced from each other certain distance and is riveted by rivet 5d2, and each gear of gear transmission list 5 is engagement driving in the space between the flat 5d1 of two dunnages.Between two dunnages and corresponding to the riveted joint of transition gear position, have rotating shaft 5d3, transition gear 5b is rotatably connected in this rotating shaft.Two dunnage 5d1, corresponding to input gear position, are respectively equipped with the first structure hole 5d11 that allows this input gear pass through; In two dunnages and corresponding to output gear position, be respectively equipped with the second structure hole 5d12 for making the attachment hole 5d3 of this output gear radial location and allowing this output gear pass through, output gear 5c one end is rotationally connected with the attachment hole 5d13 in a side dunnage, by this hole, carry out radial location, the second structure hole 5d12 and spiral pushing unit 7 in the opposite side dunnage that one end is passed through are in transmission connection.
Above-mentioned spiral pushing unit 7 also can arrange like this: adjusting sleeve 7a is slidably connected in pressure seat corresponding aperture, and same adjusting sleeve 7a center is provided with screw, and screw rod 7b is screwed in this screw.Screw rod 7b one end is connected with the one end of output gear 5c by the second structure hole 5d12, realizes coaxial rotation.Adjusting sleeve one end is connected with the push-plate 106 on caliper 105.When output gear 5c drives screw rod 7b to rotate, adjusting sleeve 7a drives push-plate to axially move.
The structure of pressure seat 1, as Figure 13 ，Qi center is provided with eccentric disc hole 1a, is provided with the adjustment trepanning 1b vertical with eccentric disc hole in these symmetry both sides, eccentric disc hole, and this adjustment trepanning 1b can be unthreaded hole or the dowel hole that is provided with keyway.It is a unthreaded hole that the present embodiment is adjusted trepanning 1b, and referring to Figure 13, eccentric disc is supported in the 1a of eccentric disc hole by bearing; Rotating being matched with of adjusting sleeve 7a adjusted in trepanning 1b, and limits axial position by flange edge 7a1 and jump ring 7c, the motion that only rotates in adjusting trepanning 1b, thus guarantee that screw rod 7b axially moves.If adjustment trepanning 1b is designed to dowel hole, adjusting sleeve 7a axially moves in adjusting trepanning 1b, can not rotate, and when screw rod 7b rotates with output gear 5c, the adjusting sleeve 7a spinning with screw rod 7b screw thread axially moves.
Rocker compensating gear of the present utility model, when brake clearance rotates transmission shaft 2 because wearing and tearing increase over the gap delta of setting, by the input gear 5a in overrunning clutch 6 driven gear gear units 5, and by the output gear 5c drving sprial pushing unit 7 in this gear transmission unit 5, drive two adjusting sleeve 7a wherein to rotate, two adjust screw rod 7b moves axially, thereby parallel and promote reposefully push-plate 107 and move forward, the gap increasing due to wearing and tearing with compensation, the distance that adjustment screw rod advances equals the wear extent of essential compensation.
Owing to having adopted an overrunning clutch, the rotation of 3 pairs of brake clearance compensation of transmission shaft and other rotation are separated, guaranteed that other rotations can not cause interference to brake clearance compensation.Make brake clearance adjustment accurate, braking maneuver is reliable.
Claims (10)
1. the brake clearance compensation mechanism based on air-pressure disc brake, be placed in push-plate one side of described break, it is characterized in that comprising the transmission shaft that brake clearance is compensated, overrunning clutch, gear transmission unit, spiral pushing unit and pressure seat, described transmission shaft is by the be in transmission connection input end of gear transmission unit of described overrunning clutch, make this gear transmission unit do the transmission of single direction, described spiral pushing unit is placed on described pressure seat, the output terminal of this spiral pushing unit connects described push-plate, the be in transmission connection input end of spiral pushing unit of the output terminal of gear transmission unit, the output terminal of spiral pushing unit is connected with push-plate.
2. the brake clearance compensation mechanism based on air-pressure disc brake according to claim 1, it is characterized in that described gear transmission unit comprises input gear, output gear and transition gear, carries out engagement driving by least one transition gear between described input gear and output gear.
3. the brake clearance compensation mechanism based on air-pressure disc brake according to claim 2, is characterized in that each gear rotation of described gear transmission unit is arranged on a gear stand, and this gear stand is placed in a side of described pressure seat.
4. the brake clearance compensation mechanism based on air-pressure disc brake according to claim 3, it is characterized in that described transition gear and output gear have respectively two, the transition gear that place by symmetry respectively the symmetrical both sides of described input gear carries out engagement driving with the symmetrical output gear of placing.
5. the brake clearance compensation mechanism based on air-pressure disc brake according to any one described in claim 2-4, is characterized in that described transmission shaft connects input gear by overrunning clutch.
6. the brake clearance compensation mechanism based on air-pressure disc brake according to claim 5, is characterized in that described overrunning clutch is unilateral bearing.
7. the brake clearance compensation mechanism based on air-pressure disc brake according to claim 6, its feature comprises adjusting sleeve and screw rod in described spiral pushing unit, described adjusting sleeve is movably connected on described pressure seat, adjusting sleeve center is provided with screw, described screw rod is screwed in this screw, adjusting sleeve or screw rod are connected with described output gear, and the adjusting sleeve one end that is rotatably connected in the screw rod of adjusting sleeve or is rotatably connected in screw rod is connected with described push-plate.
8. the brake clearance compensation mechanism based on air-pressure disc brake according to claim 7, is characterized in that described pressure seat is provided with symmetrically arranged adjustment trepanning, and described adjusting sleeve is placed in adjusts trepanning.
9. the brake clearance compensation mechanism based on air-pressure disc brake according to claim 8, it is characterized in that described adjusting sleeve is rotatably connected in described adjustment trepanning and with output gear is connected, screw rod is screwed in screw corresponding to adjusting sleeve, one end is connected with push-plate, when output gear drives adjusting sleeve to rotate, screw rod drives push-plate to axially move.
10. the brake clearance compensation mechanism based on air-pressure disc brake according to claim 8, it is characterized in that described adjusting sleeve is slidably connected in described adjustment trepanning, one end is connected with push-plate, screw rod is screwed in screw corresponding to adjusting sleeve, one end is connected with output gear, when output gear drives bolt rotary, adjusting sleeve drives push-plate to axially move.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320392924.1U CN203404294U (en) | 2013-07-03 | 2013-07-03 | Brake clearance compensation mechanism based on air-pressure disk type brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320392924.1U CN203404294U (en) | 2013-07-03 | 2013-07-03 | Brake clearance compensation mechanism based on air-pressure disk type brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203404294U true CN203404294U (en) | 2014-01-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320392924.1U Expired - Fee Related CN203404294U (en) | 2013-07-03 | 2013-07-03 | Brake clearance compensation mechanism based on air-pressure disk type brake |
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| Country | Link |
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| CN (1) | CN203404294U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486167A (en) * | 2013-07-03 | 2014-01-01 | 李应声 | Braking-clearance compensating mechanism based on atmospheric-pressure disc type brake |
-
2013
- 2013-07-03 CN CN201320392924.1U patent/CN203404294U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486167A (en) * | 2013-07-03 | 2014-01-01 | 李应声 | Braking-clearance compensating mechanism based on atmospheric-pressure disc type brake |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140122 Termination date: 20210703 |
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| CF01 | Termination of patent right due to non-payment of annual fee |