CN220262749U - Hand brake link mechanism of tractor - Google Patents
Hand brake link mechanism of tractor Download PDFInfo
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- CN220262749U CN220262749U CN202322821811.5U CN202322821811U CN220262749U CN 220262749 U CN220262749 U CN 220262749U CN 202322821811 U CN202322821811 U CN 202322821811U CN 220262749 U CN220262749 U CN 220262749U
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- hand brake
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- 230000007246 mechanism Effects 0.000 title claims abstract description 23
- 125000006850 spacer group Chemical group 0.000 claims description 8
- 230000007547 defect Effects 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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- Transmission Of Braking Force In Braking Systems (AREA)
Abstract
The utility model is suitable for the field of vehicle braking control, and provides a hand brake link mechanism of a tractor, which comprises a braking handle, a shaft seat, a connecting seat, a hand brake and a brake disc; the hand brake is connected with the brake disc in a matched manner, and comprises a rocker arm, and a return spring is arranged on the rocker arm; the brake handle is hinged with the axle seat, the bottom of the brake handle is hinged with a first hinge arm, the first hinge arm is hinged with a second hinge arm, one end of the second hinge arm is hinged with the connecting seat, the other end of the second hinge arm is hinged with a third hinge arm, and the third hinge arm is hinged with a rocker arm, so that the hand brake connecting rod mechanism is applicable to mechanical vehicles such as large tractors, vehicle types with higher ground clearance of a cab and other large agricultural machinery, and the defect that a common hand brake connecting rod mechanism cannot meet a hand brake system of a large tractor is overcome.
Description
Technical Field
The utility model is suitable for the field of vehicle braking control, and provides a hand brake link mechanism of a tractor.
Background
The parking brake is generally called a hand brake, and has the function of providing a resistance to the vehicle when the vehicle is parked, so that the vehicle does not slip. The parking brake is usually locked by a transmission shaft or a rear wheel, so that the aim of preventing a car from sliding during parking is fulfilled.
On a large-tonnage tractor, a parking hand brake is an important component of a parking system, and because the large-tonnage tractor is large in locomotive type, the ground clearance of a cab is high, the hand grip controlled by the hand brake is far away from a transmission shaft near an axle, and most of common hand brake link mechanisms are only suitable for models with low ground clearance of the cab. It can be seen that the common hand brake link mechanism cannot meet the design requirement of the hand brake system of the large tractor.
Disclosure of Invention
Aiming at the defects, the utility model aims to provide a hand brake link mechanism of a tractor, which aims to solve the problems in the background art and comprises a brake handle, a shaft seat, a connecting seat, a hand brake and a brake disc; the hand brake is connected with the brake disc in a matched manner, and comprises a rocker arm, and a return spring is arranged on the rocker arm;
the brake handle is hinged with the shaft seat, the bottom of the brake handle is hinged with a first hinge arm, the first hinge arm is hinged with a second hinge arm, one end of the second hinge arm is hinged with the connecting seat, the other end of the second hinge arm is hinged with a third hinge arm, and one end of the first hinge arm, which is far away from the brake handle, is hinged with the middle part of the second hinge arm; and the third articulated arm is articulated with the rocker arm.
The first articulated arm comprises a first connecting rod, a connecting part and a second connecting rod which are sequentially installed; the first connecting rod is hinged with the brake handle, and the second connecting rod is hinged with the second hinge arm.
Further, the connecting part comprises a first fastening nut, an adjusting rod and a second fastening nut; the first fastening nut is in threaded connection with the first connecting rod, and the second fastening nut is in threaded connection with the second connecting rod.
Further, the brake handle comprises a first hinge plate and a second hinge plate, and the first hinge plate and the second hinge plate are both hinged with the shaft seat through a hinge shaft.
Further, a hinge shaft spacer bush is sleeved on the hinge shaft, and the hinge shaft spacer bush is arranged between the second hinge plate and the shaft seat.
Further, a limiting piece is arranged on the shaft seat and is matched and abutted with the bottom of the brake handle.
In summary, in actual use, the brake handle is lifted, and the brake handle drives the first hinge arm to move upwards, so that the force point of the driver to the brake handle is far away from the hinge point of the brake handle and the first connecting rod, and the moment is increased. The first articulated arm drives the second articulated arm to move upwards; then, the second articulated arm drives the third articulated arm articulated with the second articulated arm to move upwards; finally, the third articulated arm drives the rocker arm to rotate, and parking braking is achieved.
Therefore, the hand brake link mechanism is suitable for mechanical vehicles such as large tractors, vehicle types with a high cab ground clearance distance, other large agricultural machinery and the like, and overcomes the defect that the common hand brake link mechanism cannot meet the hand brake system of the large tractor.
Drawings
FIG. 1 is a schematic side view of a link mechanism;
FIG. 2 is a top view of the linkage mechanism;
FIG. 3 is a detailed view showing the shaft seat and the connecting portion;
FIG. 4 is a top view of the axle seat and brake handle;
in the figure: 1-braking a handle; 10-hinging shaft; 101-hinging shaft spacer bush; 11-a first hinge plate; 12-a second hinge plate; 13-limiting sheets; 2-a shaft seat; 3-a first articulated arm; 31-a first connecting rod; 32-a connection; 321-a first fastening nut; 322-adjusting the rod; 323-a second fastening nut; 33-a second connecting rod; 4-a second articulated arm; 40-connecting seats; 5-a third hinge arm; 6-hand brake; 61-rocker arms; 7-a return spring; 8-brake disc.
Detailed Description
The present utility model will be described in further detail with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Referring to fig. 1-4, the utility model aims to provide a hand brake link mechanism of a tractor, which comprises a brake handle 1, a shaft seat 2, a connecting seat 40, a hand brake 6 and a brake disc 8; the driver controls the vehicle to brake through the brake handle 1, the brake handle 1 is arranged on the shaft seat 2, the shaft seat 2 is arranged on the bracket at the bottom of the cab, and the connection reliability of the brake handle 1 is ensured. The connecting seat 40 is fixedly connected to the top of the tractor axle and plays a role of fixing the link mechanism. The brake disc 8 is arranged on a transmission shaft at the bottom of a tractor bridge, the hand brake 6 is a hand-twist band-type brake widely applied to the market, the hand brake 6 is matched and connected with the brake disc 8, and the action principle is that the purpose of braking and parking is achieved by the hand-twist band-type brake embracing the brake disc 8.
The hand brake 6 is mounted on the brake disc 8, the hand brake 6 comprising a rocker arm 61, the rocker arm 61 being mounted with a return spring 7. The return spring 7 is arranged between the rocker arm 61 and the body of the hand brake 6, and the link mechanism drives the rocker arm 61 to rotate so as to lock the hand brake 6.
The brake handle 1 is hinged with the shaft seat 2, the bottom of the brake handle 1 is hinged with a first hinge arm 3, the first hinge arm 3 is hinged with a second hinge arm 4, one end of the second hinge arm 4 is hinged with the connecting seat 40, and the other end is hinged with a third hinge arm 5; that is, one end of the second hinge arm 4 is hinge-coupled to the connection base 40 as a fulcrum, the other end is hinge-coupled to the third hinge arm 5, and one end of the first hinge arm 3 remote from the brake handle 1 is hinge-coupled to the middle of the second hinge arm 4. The third hinge arm 5 is hinge-connected to the swing arm 61. When the handle 1 is pulled upwards, the first articulated arm 3 can be driven to move upwards.
The first articulated arm 3 comprises a first connecting rod 31, a connecting part 32 and a second connecting rod 33 which are sequentially installed; the first connecting rod 31 is hinged with the brake handle 1, and the second connecting rod 33 is hinged with the second hinge arm 4. One end of the connecting portion 32 is in threaded connection with the first connecting rod 31, the other end of the connecting portion 32 is in threaded connection with the second connecting rod 33, the connecting portion 32 plays a role in bearing, and when the connecting rod mechanism is installed, the length of the first articulated arm 3 can be adjusted through the connecting portion 32 so as to adapt to the height error between the frame and the cab.
When in actual use, an operator pulls the brake handle 1, the brake handle 1 is lifted to drive the first articulated arm 3 to move upwards, and the first articulated arm 3 drives the second articulated arm 4 to move upwards; then, the second articulated arm 4 drives the third articulated arm 5 articulated with the second articulated arm to move upwards; finally, the third articulated arm 5 drives the rocker arm 61 to rotate, so as to realize parking braking. In the process, as the hinge point of the first hinge arm 3 and the second hinge arm 4 is closer to the pivot point of the second hinge arm 4, the hinge point of the second hinge arm 4 and the third hinge arm 5 is farther from the pivot point of the second hinge arm 4, thereby realizing the function of amplifying the movement stroke of the third hinge arm 5.
Preferably, the connection part 32 includes a first fastening nut 321, an adjusting rod 322, and a second fastening nut 323; the first fastening nut 321 is in threaded connection with the first connecting rod 31, and the second fastening nut 323 is in threaded connection with the second connecting rod 33. When the link mechanism is installed, the first fastening nut 321 and the second fastening nut 323 are respectively connected to the first connecting rod 31 and the second connecting rod 33 in a threaded manner, and then the first connecting rod 31, the second connecting rod 33 and the adjusting rod 322 are installed in sequence; after the fixing is in place, the first fastening nut 321 and the second fastening nut 323 are screwed down, and at this time, the first fastening nut 321 and the second fastening nut 323 are respectively tightly abutted with the two ends of the adjusting rod 322, so that the fixing is completed.
Preferably, the brake handle 1 comprises a first hinge piece 11 and a second hinge piece 12, wherein the first hinge piece 11 and the second hinge piece 12 are both hinged with the shaft seat 2 through a hinge shaft 10. The first hinge plate 11 and the second hinge plate 12 are connected with the shaft seat 2 in a more reliable manner.
Preferably, the hinge 10 is sleeved with a hinge spacer 101, and the hinge spacer 101 is disposed between the second hinge piece 12 and the shaft seat 2. The hinge shaft spacer 101 is arranged between the second hinge plate 12 and the shaft seat 2 and used for positioning the brake handle 1, so that the brake handle 1 cannot shake back and forth in the shaft seat 2.
Preferably, the shaft seat 2 is provided with a limiting piece 13, and the limiting piece 13 is matched and abutted with the bottom of the brake handle 1. When the driver releases the hand brake, the brake handle 1 is lowered, and the limiting piece 13 is arranged to limit when the brake handle is lowered to the lowest.
In summary, in actual use, the brake handle 1 is lifted, the brake handle 1 drives the first hinge arm 3 to move upwards, and the force applied to the brake handle 1 by the driver is far away from the hinge point of the brake handle 1 and the first connecting rod 31, so that the moment is increased. The first articulated arm 3 drives the second articulated arm 4 to move upwards; then, the second articulated arm 4 drives the third articulated arm 5 articulated with the second articulated arm to move upwards; finally, the third articulated arm 5 drives the rocker arm 61 to rotate, so as to realize parking braking. Therefore, the hand brake link mechanism is suitable for mechanical vehicles such as large tractors, vehicle types with a high cab ground clearance distance, other large agricultural machinery and the like, and overcomes the defect that the common hand brake link mechanism cannot meet the hand brake system of the large tractor.
Of course, the present utility model is capable of other various embodiments and its several details are capable of modification and variation in light of the present utility model by one skilled in the art without departing from the spirit and scope of the utility model as defined in the appended claims.
Claims (5)
1. The hand brake link mechanism of the tractor is characterized by comprising a brake handle (1), a shaft seat (2), a connecting seat (40), a hand brake (6) and a brake disc (8); the hand brake (6) is arranged on the brake disc (8), the hand brake (6) comprises a rocker arm (61), and a return spring (7) is arranged on the rocker arm (61);
the brake handle (1) is hinged with the shaft seat (2), a first hinge arm (3) is hinged at the bottom of the brake handle (1), a second hinge arm (4) is hinged at the first hinge arm (3), one end of the second hinge arm (4) is hinged on the connecting seat (40), a third hinge arm (5) is hinged at the other end of the second hinge arm, and one end, far away from the brake handle (1), of the first hinge arm (3) is hinged at the middle part of the second hinge arm (4); the third articulated arm (5) is articulated with a rocker arm (61);
the first articulated arm (3) comprises a first connecting rod (31), a connecting part (32) and a second connecting rod (33) which are sequentially installed; the first connecting rod (31) is hinged with the brake handle (1), and the second connecting rod (33) is hinged with the second hinge arm (4).
2. The tractor hand brake linkage according to claim 1, characterized in that the connection (32) comprises a first fastening nut (321), an adjusting lever (322) and a second fastening nut (323); the first fastening nut (321) is in threaded connection with the first connecting rod (31), and the second fastening nut (323) is in threaded connection with the second connecting rod (33).
3. The hand brake linkage of a tractor according to claim 1, characterized in that the brake handle (1) comprises a first hinge piece (11) and a second hinge piece (12), both the first hinge piece (11) and the second hinge piece (12) being hinged to the axle seat (2) by means of a hinge axle (10).
4. A hand brake linkage mechanism for a tractor according to claim 3, wherein the hinge shaft (10) is sleeved with a hinge shaft spacer (101), and the hinge shaft spacer (101) is arranged between the second hinge plate (12) and the shaft seat (2).
5. The hand brake link mechanism of the tractor according to claim 1, characterized in that a limiting piece (13) is arranged on the shaft seat (2), and the limiting piece (13) is matched and abutted with the bottom of the brake handle (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322821811.5U CN220262749U (en) | 2023-10-20 | 2023-10-20 | Hand brake link mechanism of tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322821811.5U CN220262749U (en) | 2023-10-20 | 2023-10-20 | Hand brake link mechanism of tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220262749U true CN220262749U (en) | 2023-12-29 |
Family
ID=89303740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322821811.5U Active CN220262749U (en) | 2023-10-20 | 2023-10-20 | Hand brake link mechanism of tractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220262749U (en) |
-
2023
- 2023-10-20 CN CN202322821811.5U patent/CN220262749U/en active Active
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