CN216478566U - Novel self-adjusting mechanism assembly - Google Patents
Novel self-adjusting mechanism assembly Download PDFInfo
- Publication number
- CN216478566U CN216478566U CN202122079397.6U CN202122079397U CN216478566U CN 216478566 U CN216478566 U CN 216478566U CN 202122079397 U CN202122079397 U CN 202122079397U CN 216478566 U CN216478566 U CN 216478566U
- Authority
- CN
- China
- Prior art keywords
- self
- assembly
- brake shoe
- adjusting
- shoe assembly
- Prior art date
- 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.)
- Active
Links
Images
Landscapes
- Braking Arrangements (AREA)
Abstract
The utility model discloses a novel self-adjusting mechanism assembly. The self-adjusting ratchet wheel is provided with a through hole, the self-adjusting screw rod penetrates through the self-adjusting ratchet wheel through hole and then is movably sleeved into the self-adjusting screw sleeve, the self-adjusting screw rod is connected with the through hole of the self-adjusting ratchet wheel through threads, the self-adjusting ratchet wheel is in contact connection with the self-adjusting screw sleeve, and the self-adjusting ratchet wheel is used for being in meshing connection with the shifting plate in a matching mode; and meanwhile, return springs are sleeved outside the self-adjusting screw rods and the self-adjusting screw sleeves, and the upper return springs are tensioned and assembled in assembly holes of the front brake shoe assembly and the rear brake shoe assembly. The brake device has the advantages that the occupied space of brake parts is reduced, the structure is simple, the problems of drag grinding, brake failure and the like caused by the breakage of the spring due to the relative friction between the upper return spring and the wheel cylinder in the braking process because the distance between the self-adjusting mechanism and the wheel cylinder is small are solved, and the stability and the reliability of the leading shoe type drum brake are improved.
Description
Technical Field
The utility model relates to a hydraulically-triggered leading shoe type drum brake, in particular to a novel self-adjusting mechanism assembly.
Background
The hydraulic leading shoe drum brake is mainly used on a car or a pick-up truck, the car is characterized by large amount, the brake of the pick-up truck is relatively large, and the brake is required to be stable in structure, high in reliability and stable in braking.
Before the whole vehicle is assembled, parts of the brake are required to be assembled, transported, equipped with the axle and the brake drum, and the brake is inevitably bumpy in the process of transporting and assembling the axle. Vibration, collision and the like, the two side shoes of the traditional leading shoe drum brake can slide to different degrees:
firstly, the upper return spring is interfered with a wheel cylinder body when the brake is over-shoe sliding, the springs are abraded and broken due to mutual friction in the braking process, the brake shoe cannot return, the shoe and the brake drum are dragged and ground, the friction plate is abnormally abraded, and the service life of the friction plate is greatly shortened;
secondly, the brake over-shoe sliding can cause the interference between an upper return spring and a wheel cylinder shield, the wheel cylinder shield can be guided to break, dust enters a cylinder body, and finally the brake failure is caused;
from the market and axle factory feedback, the excessive slipping of the shoes is common, and the situation causes complaints of customers to different degrees, so that the safety space between the return spring and the cylinder is increased and is not easy when the brake is designed.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that the safety space between an upper return spring and a wheel cylinder is increased in the brake in the prior art, the utility model aims to provide a novel self-adjusting mechanism assembly, the self-adjusting mechanism is sleeved in the upper return spring, the distance between the upper return spring and the wheel cylinder assembly is greatly increased, the problems of breakage of the upper return spring, breakage of a wheel cylinder shield and the like caused by excessive sliding of a hoof are avoided, and the stability and the reliability of a hoof type drum brake are improved.
In order to achieve the purpose, the technical scheme of the utility model is as follows:
the self-regulating mechanism assembly comprises a self-regulating screw rod, a self-regulating screw sleeve and an upper return spring, the self-regulating ratchet wheel is provided with a through hole, one end of the self-regulating screw rod penetrates through the through hole of the self-regulating ratchet wheel and then is movably sleeved into one end of the self-regulating screw sleeve, the other end of the self-regulating screw rod is connected with the front brake assembly, the other end of the self-regulating screw sleeve is connected with the rear brake shoe assembly, the self-regulating screw rod is connected with the through hole of the self-regulating ratchet wheel through threads, the self-regulating ratchet wheel is in contact connection with the self-regulating screw sleeve, and the self-regulating ratchet wheel is used for being in meshing connection with the shifting plate in a matching manner; and meanwhile, return springs are sleeved outside the self-adjusting screw rods and the self-adjusting screw sleeves, and the upper return springs are tensioned and assembled in assembly holes of the front brake shoe assembly and the rear brake shoe assembly.
The front brake shoe assembly and the rear brake shoe assembly are provided with assembly holes, and two ends of the upper return spring are respectively hooked in the assembly holes of the front brake shoe assembly and the rear brake shoe assembly and are tensioned and assembled.
The brake drum, the front brake shoe assembly and the rear brake shoe assembly are all arranged on the brake bottom plate, the front brake shoe assembly comprises front brake tendons, and the rear brake shoe assembly comprises rear brake tendons. And a brake wheel cylinder assembly is arranged between the front brake shoe assembly and the rear brake shoe assembly, the brake wheel cylinder assembly is fixedly arranged on the brake bottom plate, and two ends of the brake wheel cylinder assembly are respectively connected with the front brake tendon and the rear brake tendon.
The self-adjusting screw rod is provided with a convex block at the end part connected with the front brake assembly, the middle part of the shifting plate is hinged on the front brake shoe assembly, one end of the shifting plate extends towards the self-adjusting ratchet wheel and is meshed with the self-adjusting ratchet wheel to form ratchet connection, the other end of the shifting plate is provided with a bending part extending towards the convex block, and the convex block is used for blocking the rotating position of the shifting plate limited by the bending part of the shifting plate.
The shifting plate is hinged to a front brake tendon of the front brake shoe assembly through a cylindrical pin and is elastically connected with the lower part of the front brake tendon through a tensioning spring.
The other ends of the self-adjusting screw rod and the self-adjusting screw sleeve are provided with two sunken clamping groove openings, the clamping groove opening at the other end of the self-adjusting screw rod is clamped and connected between the clamping grooves of the rear brake shoe assembly, and the clamping groove opening at the other end of the self-adjusting screw sleeve is clamped and connected between the clamping grooves of the rear brake shoe assembly.
The upper return spring is arranged outside the self-adjusting screw rod and the self-adjusting threaded sleeve in a winding mode.
The self-adjusting screw rod and the self-adjusting screw sleeve penetrate into the upper return spring from two ends of the upper return spring oppositely.
The utility model has the beneficial effects that:
the utility model realizes that the self-adjusting mechanism is sleeved in the upper return spring, avoids the space between the self-adjusting mechanism and the wheel cylinder assembly which is originally compact, increases the parts of the upper return spring, avoids the problems of the breakage of the return spring, the breakage of the wheel cylinder protective cover and the like caused by the excessive sliding of the hoof, and improves the stability and the reliability of the leading hoof type drum brake
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a cross-sectional view of fig. 3.
FIG. 3 is a brake assembly illustration.
Fig. 4 is an exploded view of the present invention.
In the figure: the self-adjusting brake device comprises a self-adjusting screw rod 1, a self-adjusting ratchet wheel 2, an upper return spring 3, a self-adjusting screw sleeve 4, a brake drum 5, a front shoe assembly 6, a brake wheel cylinder assembly 7, a rear shoe assembly 8, a shifting plate 9, a cylindrical pin 10, a tension spring 11, a front brake tendon 12 and a rear brake tendon 13.
Detailed Description
The utility model is further described with reference to the accompanying drawings and the detailed description.
As shown in fig. 1 and 4, the self-adjusting mechanism assembly comprises a self-adjusting screw rod 1, a self-adjusting threaded sleeve 4 and an upper return spring 3, a through hole is formed in a self-adjusting ratchet wheel 2, the peripheral surface of the self-adjusting ratchet wheel 2 is of a ratchet wheel structure, one end of the self-adjusting screw rod 1 penetrates through the through hole of the self-adjusting ratchet wheel 2 and then is movably sleeved into one end of the self-adjusting threaded sleeve 4, the self-adjusting screw rod 1 and the self-adjusting threaded sleeve 4 are not in threaded connection, the other end of the self-adjusting screw rod 1 is clamped and connected to a front brake assembly 6, the other end of the self-adjusting threaded sleeve 4 is clamped and connected between grooves of a rear brake shoe assembly 8, the self-adjusting screw rod 1 is in threaded connection with the through hole of the self-adjusting ratchet wheel 2, the self-adjusting ratchet wheel 2 is in contact connection with the self-adjusting threaded sleeve 4, and the self-adjusting ratchet wheel 2 is in meshing connection with a shifting plate 9 in a matching manner; meanwhile, return springs 3 are sleeved outside the self-adjusting screw rods 1 and the self-adjusting screw sleeves 4, and the upper return springs 3 are tensioned and assembled in assembly holes of the front brake shoe assembly 6 and the rear brake shoe assembly 8.
The front brake shoe assembly 6 and the rear brake shoe assembly 8 are provided with assembly holes, and two ends of the upper return spring 3 are respectively hooked in the assembly holes of the front brake shoe assembly 6 and the rear brake shoe assembly 8 and are tensioned and assembled.
As shown in fig. 2 and 3, the brake drum 5, the front brake shoe assembly 6, and the rear brake shoe assembly 8 are all disposed on the brake base plate, the front brake shoe assembly 6 includes a front brake tendon 12, and the rear brake shoe assembly 8 includes a rear brake tendon 13. A brake wheel cylinder assembly 7 is arranged between the front brake shoe assembly 6 and the rear brake shoe assembly 8, the brake wheel cylinder assembly 7 is fixedly arranged on the brake bottom plate, and two ends of the brake wheel cylinder assembly are respectively connected with a front brake tendon 12 and a rear brake tendon 13.
The end part of the self-adjusting screw 1 connected with the front brake assembly 6 is provided with a convex block A, the middle part of a shifting plate 9 is hinged on the front brake shoe assembly 6, one end of the shifting plate 9 extends towards the self-adjusting ratchet 2 and is meshed and connected with the self-adjusting ratchet 2 to form ratchet connection, in the figure 3, one end of the shifting plate 9 is allowed to move downwards to drive the self-adjusting ratchet 2 to rotate, and the self-adjusting ratchet 2 and the self-adjusting screw 1 are driven to axially approach together through the threaded connection of the self-adjusting ratchet 2 and the self-adjusting screw 1. The other end of the shifting plate 9 is provided with a bending part extending towards the convex block A, the convex block A is in contact connection with the bending part of the shifting plate 9, and the convex block A is used for blocking the rotating position of the shifting plate 9 limited by the bending part of the shifting plate 9, namely blocking the clockwise motion of the shifting plate 9 in figure 3.
As shown in fig. 2 and 3, the pulling plate 9 is hinged to a front brake shoe 12 of the front brake shoe assembly 6 through a cylindrical pin 10, and is elastically connected to a lower portion of the front brake shoe 12 through a tension spring 11.
As shown in fig. 1, two recessed slot openings are formed at the other ends of the self-adjusting screw rod 1 and the self-adjusting screw sleeve 4, the slot opening at the other end of the self-adjusting screw rod 1 is connected to the front brake shoe assembly 6 in a clamping manner, a projection a is arranged on the arm part on one side of the slot opening, and the slot opening at the other end of the self-adjusting screw sleeve 4 is connected between the slots of the rear brake shoe assembly 8 in a clamping manner.
In specific implementation, the upper return spring 3 is arranged outside the self-adjusting screw rod 1 and the self-adjusting threaded sleeve 4 in a winding mode, and the self-adjusting screw rod 1 and the self-adjusting threaded sleeve 4 are arranged in a mode that the upper return spring 3 penetrates through the two ends of the upper return spring 3 oppositely.
In the concrete implementation, a brake wheel cylinder assembly 7 is filled with hydraulic pressure to push a front shoe assembly 6 and a rear shoe assembly 8 to open, when the front shoe assembly 6 and the rear shoe assembly 8 open to press down a brake drum 5, the spring force of an upper return spring 3 is smaller than the hydraulic pressure driving force, three parts of a self-regulating ratchet 2, a self-regulating screw rod 1 and a self-regulating screw sleeve 4 are not stressed, meanwhile, a shifting plate 9 is subjected to the F-direction force of a shifting plate tensioning spring 11 to rotate in the B direction around the center C of a cylindrical pin 10 in a circumferential direction, because the self-regulating ratchet 2, the self-regulating screw rod 1 and the self-regulating screw sleeve 4 are not subjected to the clamping force of the upper return spring 3, the shifting plate 9 rotates to drive the self-regulating ratchet 2 to rotate around the self-regulating screw rod 1, the self-regulating ratchet 2 is in threaded fit with the self-regulating screw rod 1, the self-regulating screw sleeve 4 is jacked open, the self-regulating screw sleeve 4 and the self-regulating screw rod 1 are separated by a larger size L, brake fluid pressure is released, the front shoe assembly 6 and the rear shoe assembly 8 are subjected to return force of the return spring 3, the self-adjusting ratchet 2, the self-adjusting screw rod 1, the self-adjusting screw sleeve and the clamping force of the upper return spring 3 are returned to the clamping state, meanwhile, the brake shoe is opened for a certain distance, and the self-adjusting is finished.
When the vehicle is braked in a service process, a pedal of the vehicle is stepped on, the support of the brake wheel cylinder assembly 7 moves towards two sides and acts on the front brake shoe rib 12 and the rear brake shoe rib 13, so that the front brake shoe assembly 6 and the rear brake shoe assembly 8 are opened and pressed on the brake drum 5 to brake.
The brake device can reduce the occupied space of parts of the brake, has a simple structure, avoids the problems of drag friction, brake failure and the like caused by the breakage of the spring due to the relative friction between the upper return spring and the wheel cylinder in the braking process because the distance between the self-adjusting mechanism and the wheel cylinder is small, and improves the stability and the reliability of the leading shoe type drum brake.
The forward brake tendon 12 is a component of the forward shoe assembly 3 and the rear brake tendon 14 is a component of the rear shoe assembly 8.
Therefore, the novel self-adjusting mechanism assembly provided by the utility model combines the self-adjusting ratchet wheel, the self-adjusting screw rod, the self-adjusting screw sleeve and the upper return spring together, so that the problems of relative friction between the upper return spring and a wheel cylinder in the braking process, drag friction caused by the breakage of the spring, braking failure and the like caused by insufficient space position between the self-adjusting mechanism and the wheel cylinder assembly are avoided, and the stability and reliability of the leading shoe type drum brake are improved.
The above examples are illustrative of the present invention and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.
Claims (8)
1. A novel self-adjusting mechanism assembly is characterized in that:
the self-regulating mechanism assembly comprises a self-regulating screw rod (1), a self-regulating screw sleeve (4) and an upper return spring (3), a through hole is formed in a self-regulating ratchet wheel (2), one end of the self-regulating screw rod (1) penetrates through the through hole of the self-regulating ratchet wheel (2) and then is movably sleeved into one end of the self-regulating screw sleeve (4), the other end of the self-regulating screw rod (1) is connected with a front brake shoe assembly (6), the other end of the self-regulating screw sleeve (4) is connected with a rear brake shoe assembly (8), the through holes of the self-regulating screw rod (1) and the self-regulating ratchet wheel (2) are connected through threads, the self-regulating ratchet wheel (2) is in contact connection with the self-regulating screw sleeve (4), and the self-regulating ratchet wheel (2) is used for being in matched meshed connection with a shifting plate (9); meanwhile, return springs (3) are sleeved outside the self-adjusting screw rods (1) and the self-adjusting screw sleeves (4), and meanwhile, the upper return springs (3) are tensioned and assembled in assembly holes of the front brake shoe assembly (6) and the rear brake shoe assembly (8).
2. A novel self-adjusting mechanism assembly as defined in claim 1, wherein:
the front brake shoe assembly (6) and the rear brake shoe assembly (8) are provided with assembly holes, and two ends of the upper return spring (3) are respectively hooked in the assembly holes of the front brake shoe assembly (6) and the rear brake shoe assembly (8) and are tensioned and assembled.
3. A novel self-adjusting mechanism assembly as defined in claim 1, wherein:
the brake drum (5), the front brake shoe assembly (6) and the rear brake shoe assembly (8) are all arranged on a brake base plate, the front brake shoe assembly (6) comprises a front brake shoe rib (12), the rear brake shoe assembly (8) comprises a rear brake shoe rib (13), a brake wheel cylinder assembly (7) is arranged between the front brake shoe assembly (6) and the rear brake shoe assembly (8), the brake wheel cylinder assembly (7) is fixedly arranged on the brake base plate, and the two ends of the brake wheel cylinder assembly are respectively connected with the front brake shoe rib (12) and the rear brake shoe rib (13).
4. A novel self-adjusting mechanism assembly as defined in claim 1, wherein:
the self-adjusting brake shoe is characterized in that a protruding block (A) is arranged at the end part of the self-adjusting screw rod (1) connected with the front brake shoe assembly (6), the middle part of the shifting plate (9) is hinged to the front brake shoe assembly (6), one end of the shifting plate (9) extends towards the self-adjusting ratchet wheel (2) and is meshed with the self-adjusting ratchet wheel (2) to form ratchet connection, a bent part extending towards the protruding block (A) is arranged at the other end of the shifting plate (9), and the protruding block (A) is used for blocking the bent part of the shifting plate (9) from limiting the rotating position of the shifting plate (9).
5. A novel self-adjusting mechanism assembly as claimed in claim 1 or 4, wherein:
the shifting plate (9) is hinged and installed on a front brake tendon (12) of the front brake shoe assembly (6) through a cylindrical pin (10), and is elastically connected with the lower part of the front brake tendon (12) through a tensioning spring (11).
6. A novel self-adjusting mechanism assembly as defined in claim 1, wherein:
the other end of self-modulation screw rod (1), self-modulation swivel nut (4) be equipped with two sunken draw-in groove mouths, the draw-in groove mouth card of self-modulation screw rod (1) other end is gone into and is connected at leading brake shoe assembly (6), the draw-in groove mouth card of self-modulation swivel nut (4) other end is gone into and is connected between trailing brake shoe assembly (8) draw-in groove.
7. A novel self-adjusting mechanism assembly as defined in claim 1, wherein:
the upper return spring (3) is arranged outside the self-adjusting screw rod (1) and the self-adjusting threaded sleeve (4) in a winding manner.
8. A novel self-adjusting mechanism assembly as defined in claim 1, wherein:
the self-adjusting screw rod (1) and the self-adjusting screw sleeve (4) are arranged by relatively penetrating the upper return spring (3) from two ends of the upper return spring (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122079397.6U CN216478566U (en) | 2021-08-31 | 2021-08-31 | Novel self-adjusting mechanism assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122079397.6U CN216478566U (en) | 2021-08-31 | 2021-08-31 | Novel self-adjusting mechanism assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216478566U true CN216478566U (en) | 2022-05-10 |
Family
ID=81433147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122079397.6U Active CN216478566U (en) | 2021-08-31 | 2021-08-31 | Novel self-adjusting mechanism assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216478566U (en) |
-
2021
- 2021-08-31 CN CN202122079397.6U patent/CN216478566U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101412398B (en) | Hydraulic drum brake with upper and lower double pushrods parking mechanism | |
| CN207814271U (en) | A kind of drum brake | |
| CN216478566U (en) | Novel self-adjusting mechanism assembly | |
| KR20110060243A (en) | Disk brake | |
| CN110901604B (en) | Disc type electronic central parking brake assembly | |
| CN216895466U (en) | Novel self-adjusting mechanism assembly with thermosensitive plate | |
| CN113738796A (en) | Brake with thermosensitive plate self-adjusting mechanism assembly | |
| CN107522128B (en) | High-speed stacker sky rail braking structure | |
| CN211343800U (en) | Self-adjustable self-boosting type traveling drum brake with parking function | |
| CN201329859Y (en) | Hydraulic drum type brake with upper-lower double push rod halt vehicle mechanism | |
| CN203543917U (en) | Front-wheel braking mechanism of small four-wheel tractor | |
| CN210949615U (en) | Air pressure disc brake | |
| CN216636441U (en) | Automotive electronic brake system | |
| CN219467725U (en) | Safety brake mechanism for tractor | |
| CN210391164U (en) | Brake wheel and flat car provided with same | |
| CN217673044U (en) | Snap-in brake mechanism | |
| CN218625153U (en) | Wedge brake for light automobile | |
| CN213776155U (en) | Mechanical brake | |
| KR20160037537A (en) | Electronic Parking Brake | |
| CN211169645U (en) | Braking rotating shaft of electric hoist | |
| CN113719560A (en) | Novel self-adjusting mechanism assembly with thermosensitive plate | |
| CN203581284U (en) | Two wheeler linkage brake apparatus and front and rear wheel linkage brake two wheeler | |
| CN209762073U (en) | drum brake with spring ejector rod mechanism | |
| CN218440327U (en) | Drum brake for self-interacting electric motor car | |
| CN217633557U (en) | Brake caliper guide pin connection structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |