CN216842795U - Pressure stability control system of clutch and brake of tractor - Google Patents
Pressure stability control system of clutch and brake of tractor Download PDFInfo
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- CN216842795U CN216842795U CN202123105036.0U CN202123105036U CN216842795U CN 216842795 U CN216842795 U CN 216842795U CN 202123105036 U CN202123105036 U CN 202123105036U CN 216842795 U CN216842795 U CN 216842795U
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- block assembly
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Abstract
The utility model discloses a pressure stability control system of clutch and brake of tractor, including oil absorption filter, constant flow pump, high pressure filter, full hydraulic steering gear, steering cylinder, pressure sensor, first valve block assembly, energy storage ware, single chamber booster, two-chamber booster, brake cylinder, second valve block assembly, clutch cylinder, hydraulic tank and radiator, the utility model discloses replace original overflow valve, pressure differential is little when the flow passes through, reaches the pressure of stable control clutch brake through logic valve structure and relevant draining return circuit, has solved the pressure stability in handling the oil circuit; the oil returned by the steering gear is used as the oil inlet for clutch braking, so that the efficiency and the cost are saved; no electric control is needed, the failure rate is low, and the device is suitable for various severe working environments; the overall spatial arrangement of the hydraulic system is reasonable, and the maintenance and the repair are convenient.
Description
Technical Field
The utility model relates to a tractor pressure control field of being correlated with specifically is a pressure stability control system of separation and reunion and braking of tractor.
Background
The tractor is a self-propelled power machine used for dragging and driving the operation machine to complete various mobile operations, and can also be used as fixed operation power; the system consists of an engine, a transmission system, a walking system, a steering system, a hydraulic suspension system, a power output system, an electric instrument system, a driving control system, a traction system and other systems or devices; the clutch and the brake of the tractor in the prior art are usually controlled by an overflow valve, the pressure of the clutch and the brake is unstable, the failure is relatively high by adopting electrical control mostly, and the cost is high.
SUMMERY OF THE UTILITY MODEL
Therefore, in order to solve the above-mentioned insufficiency, the utility model provides a pressure stability control system of clutch and brake of tractor here.
The utility model is realized in such a way, a pressure stability control system of clutch and brake of a tractor is constructed, the device comprises an oil absorption filter, a constant flow pump, a high pressure filter, a full hydraulic steering gear, a steering oil cylinder, a pressure sensor, a first valve block assembly, an energy accumulator, a single-cavity booster, a double-cavity booster, a brake oil cylinder, a second valve block assembly, a clutch oil cylinder, a hydraulic oil tank and a radiator, the constant flow pump absorbs oil from the hydraulic oil tank through the oil absorption filter, the other end of the constant flow pump is connected with the hydraulic steering gear and the oil cylinder through the high pressure filter, the other end of the hydraulic steering gear is connected with the first valve block assembly, the first valve block assembly is provided with the pressure sensor, one side of the first valve block assembly is connected with the hydraulic oil tank through a pipeline and the radiator, and oil in the system reaches the single-cavity booster and the double-cavity booster through a one-way valve, one end of the first valve block assembly is connected with an energy accumulator to further stabilize pressure fluctuation, and oil drainage of the oil cylinder is connected with a hydraulic oil tank through the second valve block assembly.
Preferably, through oil return of the full-hydraulic steering gear, the oil return passes through a first valve block assembly, a logic valve is integrated in a valve block, oil pushes the valve core pressure of the logic valve to be balanced with the spring force, and the pressure is stabilized at 24Pa +/-1 Pa.
Preferably, a part of oil drainage of the oil cylinder is connected with the hydraulic oil tank through a pipeline, and a part of oil acting on the spring end of the logic valve is connected with the hydraulic oil tank through a pipeline and a radiator.
Preferably, the second valve block assembly is internally provided with a one-way valve, and the one-way valve is used for enabling oil return liquid not to interfere with each other and not forming back pressure.
Preferably, one end of the single-cavity booster and one end of the double-cavity booster are connected with the steering oil cylinder through a full hydraulic steering gear.
Preferably, the other ends of the single-chamber booster and the dual-chamber booster are connected with the second valve block assembly.
Preferably, the single-cavity booster and the double-cavity booster are switched in a path to act on the clutch oil cylinder and the brake oil cylinder, so that the clutch effect and the brake effect are achieved.
Preferably, the back pressure of the full hydraulic steering gear is 2.5 MP.
The utility model has the advantages of as follows: the utility model discloses an improvement provides a tractor's separation and reunion and the pressure stability control system of braking here, compare with equipment of the same type, have following improvement:
the pressure stability control system of the clutch and the brake of the tractor replaces the original overflow valve, the pressure difference is small when the flow passes through, the pressure of the clutch and the brake is stably controlled through the logic valve structure and the related oil drainage loop, and the pressure stability in an oil way is solved and treated; the oil returned by the steering gear is used as the oil inlet for clutch braking, so that the efficiency and the cost are saved; no electric control is needed, the failure rate is low, and the device is suitable for various severe working environments; the overall spatial arrangement of the hydraulic system is reasonable, and the maintenance and the repair are convenient.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Wherein: the system comprises an oil absorption filter-1, a constant flow pump-2, a high pressure filter-3, a full hydraulic steering gear-4, a steering oil cylinder-5, a pressure sensor-6, a first valve block assembly 7, an energy accumulator-8, a single-cavity booster-9, a double-cavity booster-10, a brake oil cylinder-11, a second valve block assembly-12, a clutch oil cylinder-13, a hydraulic oil tank-14 and a radiator-15.
Detailed Description
The present invention will be described in detail with reference to the accompanying fig. 1, and the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model relates to a pressure stability control system of clutch and brake of tractor, including oil absorption filter 1, constant flow pump 2, high pressure filter 3, full hydraulic steering gear 4, steering cylinder 5, pressure sensor 6, first valve block assembly 7, energy storage device 8, single chamber booster 9, two-chamber booster 10, brake cylinder 11, second valve block assembly 12, clutch cylinder 13, hydraulic tank 14 and radiator 15, constant flow pump 2 absorbs oil from hydraulic tank 14 through oil absorption filter 1, the constant flow pump 2 other end is connected with hydraulic steering gear 4 and cylinder 5 through high pressure filter 3, the backpressure of full hydraulic steering gear 4 is 2.5MP, the hydraulic steering gear 4 other end is connected with first valve block assembly 7, through the full hydraulic oil return of steering gear 4, the oil return passes through first valve block assembly 7, the logic valve has been integrated in the valve block, fluid promotes logic valve case pressure and spring force phase balance, the pressure is stabilized at 24Pa +/-1 Pa, a part of oil drained from the oil cylinder 5 is connected with a hydraulic oil tank 14 through a pipeline, a part of oil acted on a spring end of a logic valve is connected with the hydraulic oil tank 14 through a pipeline and a radiator 15, a pressure sensor 6 is arranged on a first valve block assembly 7, one side of the first valve block assembly 7 is connected with the hydraulic oil tank 14 through a pipeline and a radiator 15, the oil in the system reaches a single-cavity booster 9 and a double-cavity booster 10 through a one-way valve, one ends of the single-cavity booster 9 and the double-cavity booster 10 are connected with a steering oil cylinder 5 through a full hydraulic steering gear 4, the other ends of the single-cavity booster 9 and the double-cavity booster 10 are connected with a second valve block assembly 12, the passages of the single-cavity booster 9 and the double-cavity booster 10 are switched, a clutch oil cylinder 13 and a brake oil cylinder 11 are acted to achieve the effects of clutch and braking, one end of the first valve block assembly 7 is connected with an energy accumulator 8, further stabilizing pressure fluctuation, the oil drainage of the oil cylinder 5 is connected with a hydraulic oil tank 14 through a second valve block assembly 12, and a one-way valve is arranged in the second valve block assembly 12 and used for enabling oil return liquid not to interfere with each other and not to form back pressure.
The utility model provides a pressure stabilizing control system for clutch and brake of a tractor through improvement, and the working principle is as follows; the hydraulic steering system comprises an oil absorption filter 1, a constant flow pump 2, a high-pressure filter 3, a full-hydraulic steering gear 4, a steering oil cylinder 5, a pressure sensor 6, a first valve block assembly 7, an energy accumulator 8, a single-cavity booster 9, a double-cavity booster 10, a brake oil cylinder 11, a second valve block assembly 12, a clutch oil cylinder 13, a hydraulic oil tank 14 and a radiator 15
Firstly, a constant flow pump 2 absorbs oil from a hydraulic oil tank 14, high-pressure oil is generated from the constant flow pump 2 after passing through an oil absorption filter 1, and the high-pressure oil passes through a high-pressure filter 3, a full-hydraulic steering gear 4 and a steering oil cylinder 5;
secondly, the energy accumulator 8 in the hydraulic system is used for further stabilizing pressure fluctuation, the return oil passes through the first valve block assembly 7 through the return oil of the full-hydraulic steering gear 4, a logic valve is integrated in the valve block, the logic valve controls the pressure to be stable, the oil pushes the valve core to balance the pressure and the spring force, the pressure is stabilized at 24Pa +/-1 Pa, part of the drain oil flows back to the hydraulic oil tank 14 through a pipeline, and part of the oil acting on the spring end of the logic valve flows back to the oil tank through the pipeline and the radiator 15;
thirdly, at the moment, oil liquid in the system reaches the single-cavity booster 9 and the double-cavity booster 10 through the one-way valve of the second valve block assembly 12, and the passages of the single-cavity booster 9 and the double-cavity booster 10 are switched, so that the clutch oil cylinder 13 and the brake oil cylinder 11 can be acted, and the clutch effect and the brake effect can be achieved;
fourthly, the pressure of the system is stable, the pressure flow curve of the logic valve of the first valve block assembly 7 is also stable, and the pressure difference is small when the flow passes through, so that the pressure in the hydraulic working pipeline is stable, in addition, the oil drained by the brake oil cylinder 11 returns to the hydraulic oil tank 14 through the second valve block assembly 12, and the oil returned by the check valve in the second valve block assembly 12 is not interfered with each other, so that the back pressure is not formed.
The utility model provides a pressure stability control system of clutch and brake of tractor through improving, replaces original overflow valve, and the pressure differential is little when the flow passes through, reaches the pressure of stability control clutch brake through logic valve structure and relevant draining return circuit, has solved the pressure stability in handling the oil circuit; the oil returned by the steering gear is used as the oil inlet for clutch braking, so that the efficiency and the cost are saved; no electric control is needed, the failure rate is low, and the device is suitable for various severe working environments; the overall spatial arrangement of the hydraulic system is reasonable, and the maintenance and the repair are convenient.
The basic principle and the main characteristics of the utility model and the advantages of the utility model have been shown and described above, and the utility model discloses the standard part that uses all can purchase from the market, and dysmorphism piece all can be customized according to the record of the description with the drawing, and the concrete connection mode of each part all adopts conventional means such as ripe bolt rivet among the prior art, welding, and machinery, part and equipment all adopt prior art, conventional model, and conventional connection mode in the prior art is adopted in addition to circuit connection, and the details are not repeated here.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. 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 invention. Thus, the present invention 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 (8)
1. The utility model provides a pressure stability control system of clutch and braking of tractor which characterized in that: the structure of the constant flow pump comprises an oil absorption filter (1), a constant flow pump (2), a high pressure filter (3), a full hydraulic steering gear (4), a steering oil cylinder (5), a pressure sensor (6), a first valve block assembly (7), an energy accumulator (8), a single-cavity booster (9), a double-cavity booster (10), a brake oil cylinder (11), a second valve block assembly (12), a clutch oil cylinder (13), a hydraulic oil tank (14) and a radiator (15), wherein the constant flow pump (2) absorbs oil from the hydraulic oil tank (14) through the oil absorption filter (1), the other end of the constant flow pump (2) is connected with the hydraulic steering gear (4) and the oil cylinder (5) through the high pressure filter (3), the other end of the hydraulic steering gear (4) is connected with the first valve block assembly (7), the pressure sensor (6) is arranged on the first valve block assembly (7), one side of the first valve block assembly (7) is connected with the hydraulic oil tank (14) through a pipeline and the radiator (15), oil liquid passes through the check valve among the system and reaches single chamber booster (9) and two-chamber booster (10), first valve block assembly (7) one end is connected with energy storage ware (8), further stable pressure fluctuation, hydro-cylinder (5) draining is connected with hydraulic tank (14) through second valve block assembly (12).
2. The clutch and brake pressure stability control system of a tractor according to claim 1, wherein: through the oil return of the full hydraulic steering gear (4), the oil return passes through a first valve block assembly (7), a logic valve is integrated in a valve block, the oil liquid pushes the valve core pressure of the logic valve to be balanced with the spring force, and the pressure is stabilized at 24Pa +/-1 Pa.
3. The clutch and brake pressure stability control system of a tractor according to claim 2, wherein: and part of oil drainage of the oil cylinder (5) is connected with the hydraulic oil tank (14) through a pipeline, and part of oil acting on the spring end of the logic valve is connected with the hydraulic oil tank (14) through a pipeline and a radiator (15).
4. The clutch and brake pressure stability control system of a tractor according to claim 1, wherein: and a one-way valve is arranged in the second valve block assembly (12), and is used for enabling oil return liquid not to interfere with each other and not to form back pressure.
5. The clutch and brake pressure stability control system of a tractor according to claim 1, wherein: one ends of the single-cavity booster (9) and the double-cavity booster (10) are connected with the steering oil cylinder (5) through the full hydraulic steering gear (4).
6. The clutch and brake pressure stability control system of a tractor according to claim 1, wherein: the other ends of the single-cavity booster (9) and the double-cavity booster (10) are connected with a second valve block assembly (12).
7. The clutch and brake pressure stability control system of a tractor according to claim 1, wherein: the single-cavity booster (9) and the double-cavity booster (10) are switched in a way to act on the clutch oil cylinder (13) and the brake oil cylinder (11), so that the clutch effect and the brake effect are achieved.
8. The clutch and brake pressure stability control system of a tractor according to claim 1, wherein: the back pressure of the full hydraulic steering gear (4) is 2.5 MP.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123105036.0U CN216842795U (en) | 2021-12-12 | 2021-12-12 | Pressure stability control system of clutch and brake of tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123105036.0U CN216842795U (en) | 2021-12-12 | 2021-12-12 | Pressure stability control system of clutch and brake of tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216842795U true CN216842795U (en) | 2022-06-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123105036.0U Active CN216842795U (en) | 2021-12-12 | 2021-12-12 | Pressure stability control system of clutch and brake of tractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216842795U (en) |
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2021
- 2021-12-12 CN CN202123105036.0U patent/CN216842795U/en active Active
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