CN214118802U - Tractor is with having booster of voltage limiting function, helping hand system and tractor - Google Patents
Tractor is with having booster of voltage limiting function, helping hand system and tractor Download PDFInfo
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- CN214118802U CN214118802U CN202022709606.6U CN202022709606U CN214118802U CN 214118802 U CN214118802 U CN 214118802U CN 202022709606 U CN202022709606 U CN 202022709606U CN 214118802 U CN214118802 U CN 214118802U
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Abstract
A booster with pressure limiting function for a tractor comprises a piston rod assembly and a booster cylinder body; an oil inlet and an oil outlet are arranged on the cylinder body of the booster; the piston rod assembly is arranged in the booster cylinder body in a sliding mode; the piston rod assembly comprises a piston rod and a needle valve; the piston rod is a hollow rod piece, the left end of the piston rod is provided with a piston, the piston is provided with a pressure relief hole, and the right side of the piston is radially provided with a plurality of relief holes; the needle valve is arranged in the piston rod in a sliding manner; a pressure relief valve plate is arranged on the left side of the piston, a pressure relief elastic element is arranged on the left side of the pressure relief valve plate, and prepressing is applied to the pressure relief valve plate by the pressure relief elastic element; when the hydraulic oil pressure exceeds the prepressing of the pressure relief valve plate, the hydraulic oil opens the pressure relief valve plate and releases pressure through the pressure relief hole; when the tractor is installed with the booster with the pressure limiting function, the oil inlet and the oil outlet on the cylinder body of the booster are directly connected in series on a hydraulic system of the tractor, and the tractor has the advantages of simplicity in installation, no debugging, no maintenance and low overall cost, so that the practical popularization and use effect is very good.
Description
Technical Field
The utility model relates to a tractor clutch helping hand technical field, concretely relates to tractor is with having voltage limiting function booster.
Background
The tractor clutch booster used in the current market is mainly designed for assisting in separation of a clutch of a high-horsepower tractor; the following two problems exist in the using process of the device:
when the clutch booster is connected into a tractor steering hydraulic system, the original tractor steering hydraulic system needs to be modified, and a high-pressure oil way is led out separately for the clutch booster to work, so that the modification can affect the working state of the original tractor steering hydraulic system, and the original tractor steering hydraulic system needs to be debugged from the beginning, so that the modification and debugging difficulty and workload of the hydraulic system are increased, and the overall cost when the clutch booster is used is greatly increased;
when the clutch booster works, in order to avoid the overload condition of the clutch booster, an overload pressure-limiting relief valve is additionally arranged on the clutch booster to ensure the working safety of the clutch booster, but the additionally arranged overload pressure-limiting relief valve further increases the overall cost when the clutch booster is used.
Disclosure of Invention
In order to overcome the defects in the background art, the utility model discloses a booster with a pressure limiting function for a tractor, which is designed with a larger oil drainage drift diameter, and is internally integrated with a pressure limiting device; when the booster with the pressure limiting function is additionally installed, the original hydraulic system of the tractor is not required to be changed, and the booster can be directly connected in series with the original hydraulic system of the tractor through the oil inlet and the oil outlet on the cylinder body of the booster for use; when the booster with the pressure limiting function is in a non-working state, oil return of a hydraulic system is directly completed through an oil drainage drift diameter; when overload occurs in a working state, pressure is automatically relieved through the internally integrated pressure limiting device so as to ensure the working safety; therefore, the device has the advantages of simple use and installation, debugging free, maintenance free and low overall cost, and the actual popularization and use effect is very good.
In order to realize the purpose, the utility model adopts the following technical scheme: a booster with pressure limiting function for a tractor comprises a piston rod assembly and a booster cylinder body; an oil inlet and an oil outlet are formed in the cylinder body of the booster; the piston rod assembly is arranged in the booster cylinder body in a sliding mode;
the piston rod assembly comprises a piston rod and a needle valve; the piston rod is a hollow rod piece, the left end of the piston rod is provided with a piston, the piston is provided with a pressure relief hole, and the right side of the piston is radially provided with a plurality of relief holes; the needle valve is arranged in the piston rod in a sliding mode and used for closing or opening the drainage hole; the left side of the piston is provided with a pressure relief valve plate, the left side of the pressure relief valve plate is provided with a pressure relief elastic element, and the pressure relief elastic element applies pre-pressing on the pressure relief valve plate through a throttle valve seat; when the tractor is installed by the booster with the pressure limiting function, the oil inlet and the oil outlet on the cylinder body of the booster are directly connected in series on an oil return pipeline of a hydraulic system of the tractor; when the booster is in a non-working state, the tractor hydraulic system directly finishes oil return through the drain hole of the piston rod, the oil return pressure and flow of the hydraulic system are not changed, and the influence on the tractor hydraulic system is very small; when the booster works, the needle valve slides under the driving of a shifting fork on the pedal crank, the needle valve closes the drainage hole, hydraulic oil working pressure is built on the side, corresponding to the oil inlet, of the cylinder body of the booster, the hydraulic oil pushes the piston rod assembly to move, and the piston rod assembly drives the clutch pull rod to move, so that the boosting separation of the clutch is realized; when the clutch takes place the jamming, will make booster load increase, when the hydraulic oil operating pressure that the booster cylinder body corresponds the oil inlet side exceeded when setting for pressure, the pre-compaction that pressure release elastic element set up was overcome to the pressure release valve block was opened automatically, and the hydraulic oil that the booster cylinder body corresponds the oil inlet side flows to the booster cylinder body through the pressure release hole and corresponds the oil outlet side, discharges through the oil-out and accomplishes the oil return to avoid hydraulic system oil return pressure to continuously rise, thereby realize the safe voltage limiting function of booster.
Furthermore, the left end of the piston rod is provided with a drainage cavity, the diameter of the drainage cavity is larger than that of hollow cavities at other parts of the piston rod, so that drainage holes with larger diameter and more quantity can be arranged on the outer wall of the drainage cavity to reduce the oil return resistance of the booster under the non-working state and reduce the temperature rise of hydraulic oil; the inner wall of the drainage cavity is provided with internal threads, and the internal threads are used for being connected with the throttling valve seat; the throttle valve seat is in a short-step annular shape, external threads are arranged on the outer diameter of the right end of the throttle valve seat in the radial direction, and the external threads are used for being connected with the piston rod; a stepped hole is formed in the inner side of the throttle valve seat and communicated with a drainage cavity at the left end of the piston rod to form an oil return channel of the booster in a non-working state; the purpose of the step hole is to support the needle valve return spring; the throttle valve seat is fixedly arranged at the left end of the piston rod through threads, the left end of the needle valve is provided with a drainage valve, the drainage valve is arranged in a drainage cavity, when the needle valve slides to the left side, the drainage valve is in contact with the right end face of the elastic element seat, the drainage valve closes a drainage hole at the moment, and the cylinder body of the booster is used for establishing hydraulic oil working pressure corresponding to the side of the oil inlet at the moment; the needle valve movement driving force comes from a shifting fork on the pedal crank.
Preferably, the piston is arranged at the left end of the piston rod, and a pressure relief hole is formed in the piston; a plurality of discharge holes are radially formed in the right side of the piston, external threads are formed in the excircle of the left end of the piston rod, and the external threads are used for being connected with a throttle valve seat; the throttle valve seat is in a short ring shape, a stepped hole is formed in the inner side of the throttle valve seat, and an internal thread is formed in a large circular hole of the stepped hole and used for connecting a piston rod; the throttle valve seat is fixedly arranged at the left end of the piston rod through threads, and the inner stepped hole of the throttle valve seat is communicated with the drainage hole at the left end of the piston rod to form an oil return channel of the booster in the non-working state; the purpose of the step hole is to support the needle valve return spring; the needle valve is rod-shaped, when the needle valve slides to the left side, the drain hole is closed, and hydraulic oil working pressure is built on the side, corresponding to the oil inlet, of the cylinder body of the booster at the moment; the piston rod, the needle valve and the throttle valve seat structure have the advantages of simple structure, small machining workload and low cost.
Furthermore, a needle valve reset spring is arranged between the needle valve and the throttle valve seat and used for driving the needle valve to reliably and automatically reset.
Further, the pressure relief elastic element is a slotted disc spring, a spiral spring or a rubber spring; when the slotted disc spring is used, when the throttle valve seat is locked and fixed at the left end of the piston rod through threads, the throttle valve seat applies pre-pressing on the slotted disc spring, and the pre-pressing amount enables the slotted disc spring to be in a negative stiffness area of an elastic curve, so that the adjustment work of pre-pressing the slotted disc spring during assembly of the throttle valve seat is omitted, and the assembly efficiency is greatly improved; meanwhile, the slotted disc spring in the negative stiffness area of the elastic curve limits the pressure relief pressure of the pressure relief valve plate, so that the pressure relief pressure of the booster in the pressure relief process is basically constant all the time.
Further, the pressure relief pressure of the pressure relief valve plate is set to be 2.5 MPa, and the pressure value is lower than the upper limit value of the oil return pressure of the tractor hydraulic system; normally, the pressure relief pressure of the pressure relief valve plate is set to be 2.5 +/-0.1 MPa.
Furthermore, a connecting fork is fixedly arranged at the right end part of the piston rod and is used for being connected with the pedal plate mechanism.
A power assisting system with a pressure limiting function booster comprises a clutch pedal arranged in a cab and the pressure limiting function booster playing a role in boosting, wherein the front end of the clutch pedal is a clutch pedal rocker arm, and a return spring and a connecting fork are connected to the clutch pedal rocker arm; the pressure limiting function booster is arranged above the rocker arm of the clutch pedal, and a piston rod on the pressure limiting function booster is connected with the clutch release pull rod through a connecting fork; the oil inlet is communicated with an output port on an output pipeline of the hydraulic system, and the oil outlet is communicated with a hydraulic oil tank through an oil delivery hose; and a piston rod of the pressure limiting function booster is connected with one end of the connecting fork, and the clutch release pull rod is connected with the other end of the connecting fork.
A tractor with a pressure limiting function booster comprises a clutch pedal arranged in a tractor cab and the pressure limiting function booster playing a boosting role, wherein the front end of the clutch pedal is a clutch pedal rocker arm which is connected with a return spring and a connecting fork; the pressure limiting function booster is arranged above the rocker arm of the clutch pedal, and a piston rod on the pressure limiting function booster is connected with the clutch release pull rod through a connecting fork; the oil inlet is communicated with an output port on an output pipeline of a tractor hydraulic system, and the oil outlet is communicated with a tractor hydraulic oil tank through an oil delivery hose; and a piston rod of the pressure limiting function booster is connected with one end of the connecting fork, and the clutch release pull rod is connected with the other end of the connecting fork.
Due to the adoption of the technical scheme, the utility model discloses following beneficial effect has: the utility model discloses a tractor is with having booster of voltage limiting function, because of its design has great draining latus rectum, therefore when clutch booster inserts tractor steering hydraulic system, need not to reform former tractor steering hydraulic system, oil inlet, the oil-out on the accessible booster cylinder body is directly established ties on former tractor hydraulic system, can satisfy great hydraulic system flow requirement, consequently need not to debug former tractor hydraulic system from the beginning again, greatly reduced the work load, the degree of difficulty and the whole cost of installing clutch booster additional; in addition, the larger oil drainage drift diameter also avoids the temperature rise of hydraulic oil, solves the energy loss caused by the prior clutch booster additionally arranged on the steering hydraulic system of the original tractor, and simultaneously ensures the working stability of the hydraulic system; in addition, the pressure limiting device integrated in the booster saves an overload pressure limiting relief valve which is additionally arranged when a clutch booster is additionally arranged in the prior art, so that the overall cost when the clutch booster is used is further reduced; the utility model discloses a tractor has the pressure limiting function booster and has the installation simply, exempt from the debugging, non-maintaining, use overall cost low advantage, therefore actual popularization and use effect is very good.
Drawings
FIG. 1 is a schematic structural view of an embodiment of a booster with a pressure limiting function for a tractor;
FIG. 2 is a schematic structural view of an embodiment of a piston rod assembly;
FIG. 3 is a schematic structural view of an embodiment of a piston rod;
FIG. 4 is a schematic structural view of an embodiment of a needle valve;
FIG. 5 is a schematic structural view of a second embodiment of the piston rod assembly;
FIG. 6 is a schematic structural view of a second embodiment of a piston rod;
FIG. 7 is a schematic structural view of a second embodiment of a needle valve;
FIG. 8 is a schematic view of a third embodiment of a piston rod assembly;
in the figure: 1. a piston rod assembly; 1.1, a piston rod; 1.1.1, a drainage cavity; 1.1.2, a drain hole; 1.1.3, a piston; 1.1.4, pressure relief holes; 1.2, needle valves; 1.2.1, a discharge valve; 1.3, a pressure relief valve plate; 1.4, a pressure relief elastic element; 1.5, a needle valve return spring; 1.6, a throttle valve seat; 2. a booster cylinder; 2.1, an oil inlet; 2.2, oil outlet; 3. and a connecting fork.
Detailed Description
The invention will be explained in more detail by the following examples, which disclose the invention and are intended to protect all technical improvements within the scope of the invention.
The first embodiment is as follows:
a booster with pressure limiting function for a tractor comprises a piston rod assembly 1 and a booster cylinder body 2; an oil inlet 2.1 and an oil outlet 2.2 are arranged on the booster cylinder body 2; the piston rod assembly 1 is arranged in a booster cylinder body 2 in a sliding mode;
the piston rod assembly 1 comprises a piston rod 1.1, a needle valve 1.2, a pressure relief valve plate 1.3, a pressure relief elastic element 1.4, a needle valve return spring 1.5 and a throttle valve seat 1.6; the piston rod 1.1 is a hollow rod piece, the inner side of the left end of the piston rod is provided with a drainage cavity 1.1.1, the inner wall of the drainage cavity 1.1.1 is provided with internal threads, the outer side of the left end of the piston rod is provided with a piston 1.1.3, the piston 1.1.3 is provided with a pressure relief hole 1.1.4, the right side of the piston 1.1.3 is radially provided with six drainage holes 1.1.2, and the drainage holes 1.1.2 are communicated with the drainage cavity 1.1.1; the needle valve 1.2 is rod-shaped, the left end of the needle valve is provided with a discharge valve 1.2.1, the needle valve 1.2 is arranged in the piston rod 1.1 in a sliding manner, and the discharge valve 1.2.1 is arranged in the discharge cavity 1.1.1; the throttle valve seat 1.6 is in a short step ring shape, the outer diameter of the right end is provided with an external thread, the inner side is provided with a step hole, and the throttle valve seat is fixedly arranged at the left end of the piston rod 1.1 through a thread; a pressure relief valve plate 1.3 is arranged on the left side of the piston 1.1.3, a pressure relief elastic element 1.4 is arranged on the left side of the pressure relief valve plate 1.3, the pressure relief elastic element 1.4 is a slotted disc spring, the slotted disc spring applies pre-pressure to the pressure relief valve plate 1.3 through a throttle valve seat 1.6, and the pressure relief pressure of the pressure relief valve plate 1.3 is set to be 2.3 MPa; a needle valve return spring 1.5 is arranged between the needle valve 1.2 and the throttle valve seat 1.6; and a connecting fork 3 is fixedly arranged at the right end part of the piston rod 1.1.
Example two:
a booster with pressure limiting function for a tractor comprises a piston rod assembly 1 and a booster cylinder body 2; an oil inlet 2.1 and an oil outlet 2.2 are arranged on the booster cylinder body 2; the piston rod assembly 1 is arranged in a booster cylinder body 2 in a sliding mode;
the piston rod assembly 1 comprises a piston rod 1.1, a needle valve 1.2, a pressure relief valve plate 1.3, a pressure relief elastic element 1.4, a needle valve return spring 1.5 and a throttle valve seat 1.6; the piston rod 1.1 is a hollow rod piece, the left end of the piston rod is provided with a piston 1.1.3, and the piston 1.1.3 is provided with a pressure relief hole 1.1.4; an external thread is arranged on the outer circle of the left side of the piston 1.1.3, four discharge holes 1.1.2 are radially arranged on the right side of the piston 1.1.3, and the discharge holes 1.1.2 are communicated with an inner hole of the piston rod 1.1; the needle valve 1.2 is rod-shaped, and the needle valve 1.2 is arranged in the piston rod 1.1 in a sliding manner; the throttle valve seat 1.6 is in a short ring shape, a stepped hole is formed in the inner side of the throttle valve seat, an internal thread is arranged in a large circular hole of the stepped hole, and the internal thread is fixedly arranged at the left end of the piston rod 1.1 through threads; a pressure relief valve plate 1.3 is arranged on the left side of the piston 1.1.3, a pressure relief elastic element 1.4 is arranged on the left side of the pressure relief valve plate 1.3, the pressure relief elastic element 1.4 is a spiral spring, the spiral spring applies pre-pressure to the pressure relief valve plate 1.3 through a throttle valve seat 1.6, the pressure relief starting pressure of the pressure relief valve plate 1.3 is set to be 2.3 MPa, and the maximum pressure relief pressure is below 2.5 MPa; a needle valve return spring 1.5 is arranged between the needle valve 1.2 and the throttle valve seat 1.6; and a connecting fork 3 is fixedly arranged at the right end part of the piston rod 1.1.
Example three:
a booster with pressure limiting function for a tractor comprises a piston rod assembly 1 and a booster cylinder body 2; an oil inlet 2.1 and an oil outlet 2.2 are arranged on the booster cylinder body 2; the piston rod assembly 1 is arranged in a booster cylinder body 2 in a sliding mode;
the piston rod assembly 1 comprises a piston rod 1.1, a needle valve 1.2, a pressure relief valve plate 1.3, a pressure relief elastic element 1.4, a needle valve return spring 1.5 and a throttle valve seat 1.6; the piston rod 1.1 is a hollow rod piece, the left end of the piston rod is provided with a piston 1.1.3, and the piston 1.1.3 is provided with a pressure relief hole 1.1.4; an external thread is arranged on the outer circle of the left side of the piston 1.1.3, four discharge holes 1.1.2 are radially arranged on the right side of the piston 1.1.3, and the discharge holes 1.1.2 are communicated with an inner hole of the piston rod 1.1; the needle valve 1.2 is rod-shaped, and the needle valve 1.2 is arranged in the piston rod 1.1 in a sliding manner; the throttle valve seat 1.6 is in a short ring shape, a stepped hole is formed in the inner side of the throttle valve seat, an internal thread is arranged in a large circular hole of the stepped hole, and the internal thread is fixedly arranged at the left end of the piston rod 1.1 through threads; a pressure relief valve plate 1.3 is arranged on the left side of the piston 1.1.3, a pressure relief elastic element 1.4 is arranged on the left side of the pressure relief valve plate 1.3, the pressure relief elastic element 1.4 is a slotted disc spring, the slotted disc spring applies pre-pressure to the pressure relief valve plate 1.3 through a throttle valve seat 1.6, and the pressure relief pressure of the pressure relief valve plate 1.3 is set to be 2.3 MPa; a needle valve return spring 1.5 is arranged between the needle valve 1.2 and the throttle valve seat 1.6; and a connecting fork 3 is fixedly arranged at the right end part of the piston rod 1.1.
A power assisting system with a pressure limiting function booster comprises a clutch pedal arranged in a cab and the pressure limiting function booster playing a role in boosting, wherein the front end of the clutch pedal is a clutch pedal rocker arm, and a return spring and a connecting fork are connected to the clutch pedal rocker arm; the pressure limiting function booster is arranged above a rocker arm of the clutch pedal, and a piston rod 1.1 on the pressure limiting function booster is connected with a clutch release pull rod through a connecting fork 3; the oil inlet 2.1 is communicated with an output port on an output pipeline of the hydraulic system, and the oil outlet 2.2 is communicated with a hydraulic oil tank through an oil delivery hose; the piston rod 1.1 of the pressure limiting function booster is connected with one end of the connecting fork 3, and the clutch release pull rod is connected with the other end of the connecting fork 3.
A tractor with a pressure limiting function booster comprises a clutch pedal arranged in a tractor cab and the pressure limiting function booster playing a boosting role, wherein the front end of the clutch pedal is a clutch pedal rocker arm which is connected with a return spring and a connecting fork; the pressure limiting function booster is arranged above a rocker arm of the clutch pedal, and a piston rod 1.1 on the pressure limiting function booster is connected with a clutch release pull rod through a connecting fork 3; the oil inlet 2.1 is communicated with an output port on an output pipeline of a tractor hydraulic system, and the oil outlet 2.2 is communicated with a tractor hydraulic oil tank through an oil delivery hose; the piston rod 1.1 of the pressure limiting function booster is connected with one end of the connecting fork 3, and the clutch release pull rod is connected with the other end of the connecting fork 3.
The part of the utility model not detailed is prior art.
Claims (10)
1. A booster with a pressure limiting function for a tractor comprises a piston rod assembly (1) and a booster cylinder body (2); an oil inlet (2.1) and an oil outlet (2.2) are formed in the booster cylinder body (2); the piston rod assembly (1) is arranged in the booster cylinder body (2) in a sliding mode; the method is characterized in that: the piston rod assembly (1) comprises a piston rod (1.1) and a needle valve (1.2); the piston rod (1.1) is a hollow rod piece, the left end of the piston rod is provided with a piston (1.1.3), and the piston (1.1.3) is provided with a pressure relief hole (1.1.4); a plurality of discharge holes (1.1.2) are radially arranged on the right side of the piston (1.1.3); the needle valve (1.2) is arranged in the piston rod (1.1) in a sliding manner; the piston (1.1.3) left side is provided with pressure release valve block (1.3), and pressure release valve block (1.3) left side is provided with pressure release elastic element (1.4), and pressure release elastic element (1.4) are applied the pre-compaction to pressure release valve block (1.3) through throttle valve seat (1.6).
2. The booster with pressure limiting function for the tractor according to claim 1, wherein: the needle valve (1.2) and the piston rod (1.1) move relatively to open or close the drain hole (1.1.2).
3. The booster with pressure limiting function for the tractor according to claim 1, wherein: and the pressure relief hole (1.1.4) is opened or closed by the relative movement of the pressure relief valve plate (1.3) and the left end surface of the piston (1.1.3).
4. The booster with pressure limiting function for the tractor according to claim 1, wherein: the left end of the piston rod (1.1) is provided with a drainage cavity (1.1.1), and the inner wall of the drainage cavity (1.1.1) is provided with an internal thread; the throttle valve seat (1.6) is in a short step ring shape, the outer diameter of the right end is provided with an external thread, and the inner side is provided with a step hole; the throttle valve seat (1.6) is fixedly arranged at the left end of the piston rod (1.1) through threads; the left end of the needle valve (1.2) is provided with a drainage valve (1.2.1), and the drainage valve (1.2.1) is arranged in a drainage cavity (1.1.1); when the needle valve (1.2) slides to the left, the drain valve (1.2.1) is contacted with the elastic element seat (1.6), and the drain valve (1.2.1) closes the drain hole (1.1.2).
5. The booster with pressure limiting function for the tractor according to claim 1, wherein: the outer circle of the left end of the piston rod (1.1) is provided with an external thread; the throttle valve seat (1.6) is in a short ring shape, a stepped hole is formed in the inner side of the throttle valve seat, and an internal thread is formed in a large circular hole of the stepped hole; the throttle valve seat (1.6) is fixedly arranged at the left end of the piston rod (1.1) through threads; the needle valve (1.2) is rod-shaped, and when the needle valve (1.2) slides to the left side, the drain hole (1.1.2) is closed.
6. The booster with pressure limiting function for the tractor according to claim 1, wherein: a needle valve return spring (1.5) is arranged between the needle valve (1.2) and the throttle valve seat (1.6).
7. The booster with pressure limiting function for the tractor according to claim 1, wherein: the pressure relief elastic element (1.4) is a slotted disc spring or a spiral spring or a rubber spring.
8. The booster with pressure limiting function for the tractor according to claim 1, wherein: the right end of the piston rod (1.1) is fixedly provided with a connecting fork (3).
9. A power assisting system with the booster with the pressure limiting function as claimed in claim 1 comprises a pedal and the booster with the pressure limiting function for assisting power, wherein the front end of the pedal is a pedal rocker arm, and a return spring and a connecting fork (3) are connected to the pedal rocker arm; the pressure limiting function booster is arranged above the pedal rocker arm, and a piston rod (1.1) on the pressure limiting function booster is connected with the pull rod through a connecting fork (3); the method is characterized in that: the oil inlet (2.1) is communicated with an output port on an output pipeline of the hydraulic system, and the oil outlet (2.2) is communicated with a hydraulic oil tank through an oil delivery hose; the piston rod (1.1) of the pressure limiting function booster is connected with one end of the connecting fork (3), and the separating pull rod is connected with the other end of the connecting fork (3).
10. A tractor with the booster with the pressure limiting function as defined in claim 1 comprises a clutch pedal arranged in a cab of the tractor and the booster with the pressure limiting function for boosting, wherein a rocker arm of the clutch pedal is arranged at the front end of the clutch pedal, and a return spring and a connecting fork are connected to the rocker arm of the clutch pedal; the pressure limiting function booster is arranged above a clutch pedal rocker arm, and a piston rod (1.1) on the pressure limiting function booster is connected with a clutch release pull rod through a connecting fork (3); the method is characterized in that: the oil inlet (2.1) is communicated with an output port on an output pipeline of a tractor hydraulic system, and the oil outlet (2.2) is communicated with a tractor hydraulic oil tank through an oil delivery hose; a piston rod (1.1) of the pressure limiting function booster is connected with one end of a connecting fork (3), and the clutch release pull rod is connected with the other end of the connecting fork (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022709606.6U CN214118802U (en) | 2020-11-20 | 2020-11-20 | Tractor is with having booster of voltage limiting function, helping hand system and tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022709606.6U CN214118802U (en) | 2020-11-20 | 2020-11-20 | Tractor is with having booster of voltage limiting function, helping hand system and tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214118802U true CN214118802U (en) | 2021-09-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022709606.6U Active CN214118802U (en) | 2020-11-20 | 2020-11-20 | Tractor is with having booster of voltage limiting function, helping hand system and tractor |
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| Country | Link |
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| CN (1) | CN214118802U (en) |
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2020
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