CN219932787U - Rear axle brake structure and rear axle structure - Google Patents
Rear axle brake structure and rear axle structure Download PDFInfo
- Publication number
- CN219932787U CN219932787U CN202321705421.5U CN202321705421U CN219932787U CN 219932787 U CN219932787 U CN 219932787U CN 202321705421 U CN202321705421 U CN 202321705421U CN 219932787 U CN219932787 U CN 219932787U
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- brake
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- rear axle
- drum
- push rod
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- 230000005540 biological transmission Effects 0.000 claims description 26
- 238000010276 construction Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
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Abstract
The utility model discloses a rear axle brake structure and a rear axle structure, and relates to the technical field of automobiles, wherein the rear axle brake structure comprises a pusher, a rotary linkage assembly and a brake drum connected to a hub; the rotating linkage assembly comprises a brake shaft, the pusher is connected with the brake shaft and controls the brake shaft to rotate, the brake shaft is rotationally connected to the brake drum, and one end of the brake shaft penetrates into the inner cavity of the brake drum; the inner cavity of the brake drum is provided with a brake shoe and a brake block which are sequentially and symmetrically arranged from inside to outside, the two brake blocks are connected to the brake shoe in a one-to-one correspondence manner, the inner cavity of the brake drum is provided with a fixed shaft, one ends of the two brake shoes are propped against the fixed shaft, the other ends of the two brake shoes are respectively positioned at two sides of a brake shaft, and the two brake shoes are connected through springs; the utility model adopts the brake shaft to drive the brake pad to move to achieve the braking effect, namely adopts the mechanical structure to realize the braking, is not easy to fail in the mechanical structure, and is convenient to maintain when the mechanical structure fails.
Description
Technical Field
The utility model relates to the field of automobiles, in particular to a rear axle braking structure and a rear axle structure.
Background
The rear axle braking structure is a device which is arranged in the rear axle of the automobile and plays a role in braking. Rear axle brake structures are generally classified into disc brake structures and drum brake structures, wherein a drum brake structure is a structure in which a brake drum rotating with a wheel is de-rubbed by a brake pad in the brake drum to generate friction force to reduce the wheel speed.
The existing driving device for driving the brake block to move of the drum brake structure is usually arranged in a brake drum, for example, a high-efficiency circulating brake drum cooling system with the patent number of 2020110129329. X, which discloses a brake block and a brake block are sequentially and symmetrically arranged in the inner cavity of the brake drum from inside to outside, a reset spring and a pump piston are symmetrically arranged between the opposite sides of the two brake blocks, two ends of the reset spring are connected in inner cavity openings of the two brake blocks, the two pump pistons respectively connect the top ends and the bottom ends of the two brake blocks, and particularly the pump piston pushes the two brake blocks to move so as to contact the inner wall of the brake drum, thereby achieving the effect of reducing the speed; this patent adopts outside brake master cylinder to the brake shoe of pump piston delivery pressure to make pump piston promotion brake shoe, drive structure adopts the oil pump to need the regular detection, if the problem appears, and the maintenance work of oil pump is higher to maintainer's requirement, and the maintenance degree of difficulty is also higher, and oil pipe is connected to inside the brake drum by the outside, need dismantle the brake drum when maintaining, consequently maintenance engineering is great.
Disclosure of Invention
The utility model discloses a rear axle brake structure and a rear axle structure, which aim to solve the technical problem of inconvenient maintenance of a drum brake structure.
In order to solve the technical problems, the utility model provides the following optimization technical scheme:
a rear axle brake structure comprises a pusher, a rotary linkage assembly and a brake drum connected to a hub;
the rotating linkage assembly comprises a brake shaft, the pusher is connected with the brake shaft and controls the brake shaft to rotate, the brake shaft is rotatably connected to the brake drum, and one end of the brake shaft penetrates into an inner cavity of the brake drum;
the inner cavity of the brake drum is sequentially and symmetrically provided with brake shoes and brake pads from inside to outside, the two brake pads are connected to the brake shoes in a one-to-one correspondence manner, the inner cavity of the brake drum is provided with a fixed shaft, one ends of the two brake shoes are propped against the fixed shaft, the other ends of the two brake shoes are respectively positioned at two sides of the brake shaft, and the two brake shoes are connected through springs; when the brake shaft rotates, the two brake pads move and contact the inner wall of the brake drum.
Further, the pusher is an electric push rod.
Further, the rotating linkage assembly comprises a linkage piece, a rotating shaft, two transmission shafts, two first push rods and two second push rods; the rotating shaft is rotationally connected to an output shaft of the pusher through the linkage piece, one ends of the two transmission shafts are respectively connected to two ends of the rotating shaft, the other ends of the two transmission shafts are respectively connected to one ends of the two first push rods, the other ends of the two first push rods are respectively connected to one ends of the two second push rods, and the other ends of the two second push rods are respectively connected to two brake shafts.
Further, the linkage piece comprises a U-shaped frame and supporting rods, wherein the supporting rods are fixed at two ends of the U-shaped frame; the output shaft of the pusher is sleeved on the supporting rod in a clearance way; the rotating shaft is fixed at the bottom end of the U-shaped frame.
Further, one end of the transmission shaft is provided with two clamping blocks, the two clamping blocks and the transmission shaft are of an integrated structure, a gap exists between the two clamping blocks, and the end part of the gap is communicated with a round hole; the rotating shaft is inserted into the round hole, and the two clamping blocks are mutually close to each other through bolts, so that the rotating shaft is fixed in the round hole.
Further, the other end of the transmission shaft is provided with a strip-shaped hole; one end of the first push rod is provided with a push rod head, and the diameter of the push rod head is larger than that of the first push rod; the first push rod passes through the strip-shaped hole and is vertically connected with the transmission shaft.
Further, the second push rod comprises a screw rod, a nut and two half bodies, the screw rod penetrates through one ends of the two half bodies, the other ends of the two half bodies are fixed on the brake shaft, the first push rod penetrates through the screw rod, and the nut is sleeved on the screw rod to lock or release the first push rod.
Further, one end of the brake shaft is provided with a connecting strip, and the two half bodies are sleeved on the connecting strip and fixed on the connecting strip through nuts.
Further, a brake rod is arranged at the other end of the brake shaft and is positioned in the inner cavity; the brake rod is of a cuboid structure, and the two brake shoes are respectively positioned on one side of two largest-area surfaces of the brake rod.
The utility model provides another scheme: a rear axle structure comprises the rear axle brake structure.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model discloses a rear axle brake structure, which is provided with a pusher, a rotary linkage assembly and a brake drum, wherein the rotary linkage assembly comprises a brake shaft, the pusher drives the brake shaft to rotate, two brake shoes are extruded outwards in the rotation process of the brake shaft, and the two brake shoes are pushed outwards, so that the brake shoes fixed on the outer sides of the brake shoes are contacted with the inner wall of the brake drum, the brake drum gradually reduces the speed, and the braking effect is achieved; the utility model adopts the brake shaft to drive the brake pad to move to achieve the braking effect, namely adopts the mechanical structure to realize the braking, is not easy to fail in the mechanical structure, and is convenient to maintain when the mechanical structure fails.
Drawings
FIG. 1 is a schematic structural view of a rear axle brake structure according to the present utility model.
Fig. 2 is a schematic view of the connection structure of the pusher and the linkage of the present utility model.
Fig. 3 is a schematic view of a portion of the structure of the rotary linkage assembly of the present utility model.
Fig. 4 is an exploded view of the structure of the brake drum of the present utility model.
Fig. 5 is a schematic structural view of the rear axle structure of the present utility model.
In the figure: 1. a pusher; 2. a linkage member; 3. a rotating shaft; 4. a transmission shaft; 5. a first push rod; 6. a second push rod; 7. a brake shaft; 8. a brake drum; 9. brake shoe; 10. a brake pad; 11. a fixed shaft; 12. a spring; 13. a U-shaped frame; 14. a support rod; 15. a clamping block; 16. a gap; 17. a round hole; 18. a bolt; 19. a bar-shaped hole; 20. a pusher head; 21. a half body; 22. a screw; 23. a connecting strip; 24. a brake lever; 25. a hub.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1 to 5, a rear axle brake structure includes a pusher 1, a rotary linkage assembly and a brake drum 8 connected to a hub 25, the pusher 1 being fixed to a vehicle body. The pusher 1 is specifically an electric push rod, an air cylinder or an oil cylinder.
The rotating linkage assembly comprises a brake shaft 7, the pusher 1 is connected with the brake shaft 7 and controls the brake shaft 7 to rotate, the brake shaft 7 is rotatably connected to the brake drum 8, and one end of the brake shaft 7 penetrates into an inner cavity of the brake drum 8; the inner cavity of the brake drum 8 is sequentially and symmetrically provided with brake shoes 9 and brake shoes 10 from inside to outside, the two brake shoes 10 are connected to the brake shoes 9 in a one-to-one correspondence manner, the inner cavity of the brake drum 8 is provided with a fixed shaft 11, one ends of the two brake shoes 9 are propped against the fixed shaft 11, the other ends of the two brake shoes 9 are respectively positioned at two sides of the brake shaft 7, the two brake shoes 9 are connected through a spring 12, and the spring 12 is used for resetting the two brake shoes 9; when the brake shaft 7 rotates, the two brake pads 10 move and contact the inner wall of the brake drum 8.
The working principle of the technical scheme is as follows: when a driver treads a brake pedal, the pusher 1 is started, an output shaft of the pusher 1 drives the brake shaft 7 to rotate, the brake shaft 7 outwards extrudes two brake shoes 9 in the rotation process of the brake shaft 7, and the two brake shoes 9 are outwards pushed, so that the brake shoes 10 fixed on the outer sides of the brake shoes 9 are contacted with the inner wall of the brake drum 8, the brake drum 8 gradually reduces the speed, and a braking effect is achieved.
The brake drum 8 is formed by a housing and a cover, which are connected by means of a press fit or screw 18.
In this embodiment, the rotating linkage assembly includes a linkage member 2, a rotating shaft 3, two transmission shafts 4, two first push rods 5 and two second push rods 6, the rotating shaft 3 is rotatably connected to the vehicle body, specifically, the vehicle body is provided with a bracket, the bracket is provided with a through hole, and a gap 16 of the rotating shaft 3 is inserted into the through hole; the rotating shaft 3 is rotatably connected to an output shaft of the pusher 1 through the linkage 2, one ends of two transmission shafts 4 are respectively connected to two ends of the rotating shaft 3, the other ends of two transmission shafts 4 are respectively connected to two ends of a first push rod 5, the other ends of two first push rods 5 are respectively connected to two ends of a second push rod 6, and the other ends of two second push rods 6 are respectively connected to two brake shafts 7. When the pusher 1 starts, the output shaft of the pusher 1 applies a force in one direction of the linkage piece 2, one end of the linkage piece 2 moves along with the output shaft of the pusher 1, the other end of the linkage piece drives the rotating shaft 3 to rotate anticlockwise, the rotating shaft 3 drives the transmission shaft 4 to rotate, the transmission shaft 4 drives the first push rod 5 to rotate, the first push rod 5 drives the second push rod 6 to rotate, and the second push rod 6 drives the brake shaft 7 to rotate, so that braking is realized through rotation of the brake shaft 7. The whole mechanical structure of the rotating linkage assembly is adopted to realize the braking by mutual linkage, the structure is simple, the failure rate is low, and the maintenance is convenient.
In this embodiment, the linkage 2 includes a U-shaped frame 13 and a strut 14, and the strut 14 is fixed at two ends of the U-shaped frame 13; the output shaft gap 16 of the pusher 1 is sleeved on the supporting rod 14; the rotating shaft 3 is fixed at the bottom end of the U-shaped frame 13, the output shaft of the pusher 1 applies force to the supporting rod 14, and the supporting rod 14 drives the rotating shaft 3 to rotate.
In this embodiment, two clamping blocks 15 are disposed at one end of the transmission shaft 4, the two clamping blocks 15 and the transmission shaft 4 are in an integral structure, a gap 16 is formed between the two clamping blocks 15, and a round hole 17 is communicated with the end of the gap 16; the rotating shaft 3 is inserted into the round hole 17, and the two clamping blocks 15 are mutually close to each other through bolts 18, so that the rotating shaft 3 is fixed in the round hole 17; the two clamping blocks 15 are mutually close by tightening the bolts 18, the width of the gap 16 is reduced, and the radius of the round hole 17 is also reduced, so that the function of clamping the rotating shaft 3 is achieved.
In this embodiment, the other end of the transmission shaft 4 is provided with a bar-shaped hole 19; one end of the first push rod 5 is provided with a push rod head 20, and the diameter of the push rod head 20 is larger than that of the first push rod 5; the first push rod 5 passes through the strip-shaped hole 19 and is vertically connected with the transmission shaft 4. When the device is installed, the first push rod 5 passes through the strip-shaped hole 19 to be connected with the transmission shaft 4, and the push rod head 20 is propped against the surface of the transmission shaft 4 to prevent the first push rod 5 from being separated from the strip-shaped hole 19.
In this embodiment, the second push rod 6 includes a screw 22, a nut and two half bodies 21, the screw 22 passes through one ends of the two half bodies 21, the other ends of the two half bodies 21 are fixed on the brake shaft 7, the first push rod 5 passes through the screw 22, and the nut is sleeved on the screw 22 to lock the first push rod 5 or release the first push rod 5, so as to achieve the fixing or dismounting function, and the connection mode of the two is convenient for installation and dismounting.
In this embodiment, a connecting bar 23 is provided at one end of the brake shaft 7, and the two half bodies 21 are sleeved on the connecting bar 23 and fixed on the connecting bar 23 by nuts.
In this embodiment, a brake lever 24 is disposed at the other end of the brake shaft 7, and the brake lever 24 is located in the inner cavity; the brake lever 24 has a rectangular parallelepiped structure, the two brake shoes 9 are respectively located at one side of two largest area surfaces of the brake lever 24, that is, the two brake shoes 9 are respectively located at two sides of a short side of the brake lever 24, when the brake shoes 9 rotate, the long side of the brake shoes is gradually rotated between the two brake shoes 9, so that the long side will press the two brake shoes 9 outwards, and the brake shoes 9 are pushed outwards.
The utility model provides another scheme: a rear axle structure comprises a rear axle brake structure, the rear axle structure adopts the rear axle brake structure, the brake effect is good, the brake structure is simple, the failure rate is low, and the maintenance is convenient during failure.
The foregoing is only a specific embodiment of the utility model to enable those skilled in the art to understand or practice the utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The rear axle brake structure is characterized by comprising a pusher, a rotary linkage assembly and a brake drum connected to a hub;
the rotating linkage assembly comprises a brake shaft, the pusher is connected with the brake shaft and controls the brake shaft to rotate, the brake shaft is rotatably connected to the brake drum, and one end of the brake shaft penetrates into an inner cavity of the brake drum;
the inner cavity of the brake drum is sequentially and symmetrically provided with brake shoes and brake pads from inside to outside, the two brake pads are connected to the brake shoes in a one-to-one correspondence manner, the inner cavity of the brake drum is provided with a fixed shaft, one ends of the two brake shoes are propped against the fixed shaft, the other ends of the two brake shoes are respectively positioned at two sides of the brake shaft, and the two brake shoes are connected through springs; when the brake shaft rotates, the two brake pads move and contact the inner wall of the brake drum.
2. The rear axle brake structure of claim 1, wherein the pusher is an electric push rod.
3. The rear axle brake structure of claim 1, wherein the rotary linkage assembly comprises a linkage, a rotary shaft, two transmission shafts, two first push rods and two second push rods; the rotating shaft is rotationally connected to an output shaft of the pusher through the linkage piece, one ends of the two transmission shafts are respectively connected to two ends of the rotating shaft, the other ends of the two transmission shafts are respectively connected to one ends of the two first push rods, the other ends of the two first push rods are respectively connected to one ends of the two second push rods, and the other ends of the two second push rods are respectively connected to two brake shafts.
4. A rear axle brake arrangement according to claim 3, wherein the linkage comprises a U-shaped frame and struts, the struts being fixed at either end of the U-shaped frame; the output shaft of the pusher is sleeved on the supporting rod in a clearance way; the rotating shaft is fixed at the bottom end of the U-shaped frame.
5. A rear axle brake structure according to claim 3, wherein one end of the transmission shaft is provided with two clamping blocks, the two clamping blocks are integrated with the transmission shaft, a gap exists between the two clamping blocks, and the end part of the gap is communicated with a round hole; the rotating shaft is inserted into the round hole, and the two clamping blocks are mutually close to each other through bolts, so that the rotating shaft is fixed in the round hole.
6. A rear axle brake structure according to claim 3, wherein the other end of the transmission shaft is provided with a bar-shaped hole; one end of the first push rod is provided with a push rod head, and the diameter of the push rod head is larger than that of the first push rod; the first push rod passes through the strip-shaped hole and is vertically connected with the transmission shaft.
7. A rear axle brake arrangement as defined in claim 3, wherein the second push rod comprises a screw rod, a nut and two halves, the screw rod passing through one end of the two halves, the other ends of the two halves being secured to the brake axle, the first push rod passing through the screw rod, the nut being sleeved on the screw rod.
8. The rear axle brake structure of claim 7, wherein one end of the brake axle is provided with a connecting bar, and the two half bodies are sleeved on the connecting bar and fixed on the connecting bar through nuts.
9. The rear axle brake structure according to claim 1, wherein a brake lever is arranged at the other end of the brake shaft, and the brake lever is positioned in the inner cavity; the brake rod is of a cuboid structure, and the two brake shoes are respectively positioned on one side of two largest-area surfaces of the brake rod.
10. A rear axle construction comprising a rear axle braking arrangement as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321705421.5U CN219932787U (en) | 2023-07-03 | 2023-07-03 | Rear axle brake structure and rear axle structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321705421.5U CN219932787U (en) | 2023-07-03 | 2023-07-03 | Rear axle brake structure and rear axle structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219932787U true CN219932787U (en) | 2023-10-31 |
Family
ID=88498670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321705421.5U Active CN219932787U (en) | 2023-07-03 | 2023-07-03 | Rear axle brake structure and rear axle structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219932787U (en) |
-
2023
- 2023-07-03 CN CN202321705421.5U patent/CN219932787U/en active Active
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