CN208311322U - A kind of commercial vehicle drum brake - Google Patents
A kind of commercial vehicle drum brake Download PDFInfo
- Publication number
- CN208311322U CN208311322U CN201820826749.5U CN201820826749U CN208311322U CN 208311322 U CN208311322 U CN 208311322U CN 201820826749 U CN201820826749 U CN 201820826749U CN 208311322 U CN208311322 U CN 208311322U
- Authority
- CN
- China
- Prior art keywords
- brake
- double
- oil cylinder
- spring
- push oil
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model discloses a kind of commercial vehicle brakes, it is characterized by: one end of four brake-shoes (2) is connected on back-plate (4) by pin shaft (3), it can be rotated rotating around four pin shafts (3), the other end is pressed on double-push oil cylinder (6) head idler wheel by the effect of spring (5), both ends of the spring is mounted with adjacent two brake-shoes inside respectively, double-push oil cylinder (6) is fixed on back-plate (4) by cylinder bracket (7) with bed bolt, and double-push oil cylinder (6) oil inlet pipe connects fuel reserve tank.The utility model directly reduces the flexible deformation of brake-shoe；Improve braking ability；The components such as gas chamber, air chamber support, adjustment arm, the camshaft of conventional brake are eliminated, greatly reduce brake product cost, while also avoiding multiple components cumulative limit influences caused by brake overall performance.
Description
Technical field
The utility model relates to commercial vehicle vehicle bridge braking technology field, especially a kind of commercial vehicle drum brake.
Background technique
With China's economic development, Automobile Transportation industry also steadily forward, to the performance requirements of auto parts and components also by
It gradually improves, vehicle bridge directly affects the usability of vehicle as the essential important component of automobilism, the superiority and inferiority of components
Energy.And brake is one of the center of gravity that vehicle bridge is studied for a long time, domestic commercial vehicle mode of braking is mainly with drum at present
Based on formula braking, however there are brake block high temperature to generate heat fading for drum brake, causes braking weak, influences life safety；It passes
The commercial vehicle drum brake of system mostly uses gas to brake, construction complex parts it is more, as shown in Figure 1, 2, in addition to have dust cover 2 ',
Spring 5 ' and brake-shoe take out 3 ' by pin and are connected to back-plate 4 ' outside, it is necessary to have gas chamber 9 ' and connection sheet, air chamber support 7 ', adjust
The components of the interactions such as whole arm 8 ', camshaft 6 ', high failure rate, installation and maintenance are inconvenient；Simultaneously as shown in figure 3, tradition system
Dynamic device is provided only with two brake-shoes, and when braking, when 2 brake-shoes open braking, brake drum is on one straight line of circumference by two-phase
The brake force of opposite direction, brake drum elastic deformation is big, and brake-shoe belongs to 2 points of supports, because 2 spans are relatively large, is similarly making
Under power effect, elastic deformation is also big, directly reduces the braking ability of brake；GB7258-2017 " motor vehicle operational safety
Technical conditions " new standard requires 3.5 tons or more of commercial vehicle that need to be equipped with self-regulated arm, realize brake clearance adjust automatically, however from
The use of arm is adjusted to require brake related components very high, such as the rigidity of brake entirety, the symmetry of camshaft, friction
The material of piece, the rigidity of brake drum and thermal deformation etc..If related components are unable to satisfy requirement, just deposit in use
Lead to the risk of locking in self-regulated arm toning.
Utility model content
The purpose of the utility model is to overcome technical problem existing for existing brake, reduce brake drum flexible deformation with
And simplify brake structural, provide that a kind of flexible deformation is small, precision easily guarantees, brake force is uniform and the commercial vapour of structure cylinder list
Vehicle drum brake.The utility model aim is realized by following technical proposals: the utility model includes dust cover, braking
Hoof, pin shaft, back-plate, spring, it is characterised in that: brake-shoe there are four uniformly distributed on back-plate, the one of each brake-shoe
End is connected on back-plate by pin shaft, and the other end is pressed on the head idler wheel of double-push oil cylinder by the effect of spring, spring
Both ends are mounted with adjacent two brake-shoes inside respectively, and two symmetrical double-push oil cylinders pass through cylinder bracket and bed bolt
It is fixed on back-plate, double-push oil cylinder oil inlet pipe is connected by oil pump with fuel reserve tank.
The utility model operational process is as follows: when brake monitor (service brake, parking brake or ECU) issues brake signal, obtaining
Hydraulic oil pump oiling into double-push oil cylinder of brake signal is obtained, two pistons push piston rod respectively while stretching out in oil cylinder, living
Stopper rod head idler wheel pushes brake-shoe and brake drum friction catch.When releasing braking, by the active force of spring, brake-shoe pushes back work
Stopper rod, until returning to initial position.Compared with prior art, the utility model becomes four brakings from two traditional brake-shoes
Hoof directly reduces the flexible deformation of brake-shoe；When braking brake drum from traditional two points stress become 4 points of circumference uniformly by
Power is reduced the flexible deformation of brake drum by the interaction of power, substantially increases braking ability, and the utility model passes through liquid
Press mechanism control braking is steady, reliable.Eliminate gas chamber, air chamber support, adjustment arm, camshaft of conventional brake etc. zero
Part greatly reduces brake product cost, while also avoiding multiple components cumulative limits and making to brake overall performance
At influence.
Detailed description of the invention
Fig. 1 is conventional commercial automotive brake schematic view of the front view；
Fig. 2 is conventional commercial automotive brake side structure schematic view；
Fig. 3 is conventional commercial automotive brake brake drum stress elastic deformation schematic diagram；
Fig. 4 is the utility model structure diagram；
Fig. 5 is the utility model commercial vehicle brake drum stress elastic deformation schematic diagram.
Specific embodiment
Below according to attached drawing, the utility model is further described in conjunction with the embodiments:
As shown in figure 4, the utility model includes dust cover 1, brake-shoe 2, pin shaft 3, back-plate 4, spring 5, feature
Be: uniformly distributed there are four brake-shoe on back-plate, one end of each brake-shoe is connected on back-plate by pin shaft, can
It is rotated rotating around corresponding pin shaft, the other end is pressed on the head idler wheel of double-push oil cylinder by the effect of spring, both ends of the spring point
It is not mounted with adjacent two brake-shoes inside, two symmetrical double-push oil cylinders are fixed by cylinder bracket 7 and bed bolt
On back-plate, double-push oil cylinder oil inlet pipe is connected by oil pump with fuel reserve tank.Oil pump and fuel reserve tank are connected by conducting wire with ECU
And monitored by ECU, according to the rotation angle of brake-shoe 2, the hydraulic oil of corresponding amount is injected, to reach the mesh of brake clearance adjust automatically
's.When driver issues brake signal, oil pump injects quantitative hydraulic oil to double-push oil cylinder 6, and 6 inside two-piston of double-push oil cylinder exists
Hydraulic oil is pushed lower while being released to both ends, overcomes the pulling force of spring 5 that the brake-shoe 2 of two sides is driven to open by the idler wheel of head
It is bonded friction with the brake drum of rotation and achievees the purpose that braking, when issuing releasing brake signal, oil pump stops working, brake-shoe
2 are returned to initial position by the piston rod that the pulling force effect of spring 5 squeezes double-push oil cylinder 6, and brake-shoe 2 leaves completely at this time
Brake drum achievees the purpose that release braking.The utility model reduces camshaft 6 ', air chamber support 7 ', tune in conventional brake
The components such as whole arm and connector 8 ', gas chamber and connector 9 ', therefore this can be avoided while reducing the cost of brake
Influence of several parts machining errors to brake overall performance.As shown in figure 4, when the utility model brake, 4
When a brake-shoe opens braking, brake drum, by the brake force of two pairs of opposite directions, passes through on the orthogonal straight line of circumference two
Two pairs of brake force interactions, greatly reduce the flexible deformation of brake drum, and brake-shoe shortens compared to traditional brake-shoe,
Flexible deformation accordingly reduces, and braking ability greatly improves.
Claims (1)
1. a kind of commercial vehicle brake, including dust cover (1), brake-shoe (2), pin shaft (3), back-plate (4), spring (5),
Double-push oil cylinder (6), cylinder bracket (7), it is characterised in that: one end of four brake-shoes (2) is connected to braking bottom by pin shaft (3)
It on plate (4), can be rotated rotating around four pin shafts (3), the other end is pressed in double-push oil cylinder (6) head by the effect of spring (5) and rolls
On wheel, both ends of the spring is respectively with mounting on the inside of two adjacent brake-shoes, and double-push oil cylinder (6) is by cylinder bracket (7) with bottom plate spiral shell
Bolt is fixed on back-plate (4), and double-push oil cylinder (6) oil inlet pipe connects fuel reserve tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820826749.5U CN208311322U (en) | 2018-05-31 | 2018-05-31 | A kind of commercial vehicle drum brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820826749.5U CN208311322U (en) | 2018-05-31 | 2018-05-31 | A kind of commercial vehicle drum brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208311322U true CN208311322U (en) | 2019-01-01 |
Family
ID=64715742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820826749.5U Expired - Fee Related CN208311322U (en) | 2018-05-31 | 2018-05-31 | A kind of commercial vehicle drum brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208311322U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111765182A (en) * | 2020-06-22 | 2020-10-13 | 东南大学 | Brake device of crane |
-
2018
- 2018-05-31 CN CN201820826749.5U patent/CN208311322U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111765182A (en) * | 2020-06-22 | 2020-10-13 | 东南大学 | Brake device of crane |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190101 Termination date: 20210531 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |