CN220539999U - Steering control hydraulic control valve - Google Patents
Steering control hydraulic control valve Download PDFInfo
- Publication number
- CN220539999U CN220539999U CN202322243037.4U CN202322243037U CN220539999U CN 220539999 U CN220539999 U CN 220539999U CN 202322243037 U CN202322243037 U CN 202322243037U CN 220539999 U CN220539999 U CN 220539999U
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- valve core
- valve
- control
- steering
- push rod
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- 238000007789 sealing Methods 0.000 claims description 10
- 230000000694 effects Effects 0.000 abstract description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001737 promoting effect Effects 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Servomotors (AREA)
Abstract
The utility model relates to the technical field of hydraulic control valves and discloses a steering control hydraulic control valve, which comprises a valve body, wherein an oil inlet is formed in the bottom of the valve body, an oil return port is formed in the side wall of the valve body, a valve core seat is fixed at the top of the valve body, a containing cavity is formed in the valve core seat, a valve core push rod is arranged in the containing cavity and is in sliding connection with the inner wall of the valve core seat, a control mechanism is further fixed at the top of the valve core push rod, a limiting hole is formed in the bottom of the valve core seat, a valve core cavity is further formed in the valve body and is arranged at the bottom of the valve core push rod, valve core springs are fixed at two ends of the inner wall of the valve core cavity, a valve core is fixed at the bottom of the valve core spring, and a throttling port is formed at the bottom of the valve core cavity. The utility model has the following advantages and effects: the steering control is realized through the arrangement of the valve core and the throttle, and the control principle is essentially a throttle control principle, so that the steering control valve has better performance and reliability; meanwhile, the steering speed can be accurately controlled through the arrangement of the control mechanism.
Description
Technical Field
The utility model relates to the technical field of hydraulic control valves, in particular to a steering control hydraulic control valve.
Background
In agricultural machinery, the steering control of a crawler is usually electro-hydraulic control; there are two modes, common electrohydraulic control and electrohydraulic proportional valve control; in the actual work, the steering control impact is relatively large, and the speed control continuity is poor; the latter can overcome these problems, but the cost is relatively high, the technical maintenance requirement is also high, and the electric control system is complex, so that a new control mode needs to be proposed to solve the problems.
The Chinese patent with the authorized publication number of CN202176562U discloses an electrohydraulic control speed change operating valve, which comprises a valve body and is characterized in that a pressure reducing valve device, a buffering balance device and an electrohydraulic control device are arranged in the valve body, the electrohydraulic control device comprises 4 electrohydraulic valves, two electrohydraulic valves are respectively connected with a first gear shifting mechanism and a second gear shifting mechanism, the other two electrohydraulic valves are respectively connected with a first gear shifting mechanism and a second gear shifting mechanism, the first gear shifting mechanism and the second gear shifting mechanism are communicated with the buffering balance device through an oil way, and the first gear shifting mechanism and the second gear shifting mechanism are communicated with the pressure reducing valve device through the oil way.
However, the above-described electro-hydraulic control shift operating valve has the following disadvantages: the speed change control of the loader is completed in an electrohydraulic control mode, and the problems of large control impact, poor speed control continuity and the like can occur in the mode.
Disclosure of Invention
The utility model aims to provide a steering control hydraulic control valve which can overcome the problems of larger control impact, poor speed control continuity and the like and has the characteristics of simple structure, low cost, small size, suitability for installation of a cab, high reliability and the like.
The technical aim of the utility model is realized by the following technical scheme: the utility model provides a steering control hydraulic pressure control valve, includes the valve body, the oil inlet has been seted up to the valve body bottom, the oil return opening has been seted up to the valve body lateral wall, the valve body top is fixed with the valve core seat, the valve core seat is inside to be seted up to hold the chamber, hold the intracavity and be provided with the case push rod, case push rod sliding connection in case seat inner wall, case push rod top still is fixed with control mechanism, the case push rod can reciprocate under the control mechanism control, the spacing hole has been opened to valve core seat bottom, the valve core chamber has still been seted up in the valve body, the valve core chamber set up in case push rod bottom, valve core chamber inner wall both ends are fixed with the valve core spring, valve core spring bottom is fixed with the case, the choke is opened to valve core chamber bottom, the choke with the oil inlet communicates with each other, the oil return opening with valve core chamber lateral wall communicates with each other.
Through adopting the technical scheme, the bottom of the valve body is provided with the oil inlet, the oil inlet is connected with the steering oil cylinder for controlling steering, the more oil in the steering oil cylinder is, the higher the oil cylinder speed is, the faster the steering speed is, the steering can be controlled by controlling the oil quantity in the oil cylinder, in actual use, firstly, the oil inlet is used for oil inlet, the valve core in the valve core cavity is communicated with the valve core cavity arranged in the valve body, under the action of pressure oil of the oil inlet, the force of the valve core spring at the top of the valve core is overcome, the valve core moves upwards to the limit opening at the bottom of the valve core seat, the diversion opening at the top of the valve core is attached to the limit opening, at the moment, the opening of the throttle opening is the largest, the flow of the separated oil is the largest, the steering oil cylinder speed is zero, and the steering speed is also the same, and the vehicle keeps running straight at the moment; when steering is required to be controlled leftwards or rightwards, the steering control handle (which can be connected with the control mechanism at the assembly control part) is used for controlling the left steering direction and the right steering direction, meanwhile, the control mechanism is pressed down to push the valve core push rod to move downwards and act on the valve core to push the valve core to move downwards, the sealing columns at the two ends of the valve core are sealed at the bottom, the opening of the throttle opening is reduced, pressure oil cannot pass through the throttle opening to the oil return opening, at the moment, the oil liquid of the steering oil cylinder is pushed to be more and more, the thrust is synchronously increased, the oil cylinder speed is synchronously increased, so that the steering speed is faster and faster, the steering control is realized, and conversely, the steering speed is slower and slower.
The utility model is further provided with: the valve core is internally provided with a diversion channel, the side walls at two ends of the valve core are fixedly provided with sealing columns, the top of the valve core is provided with a diversion port, and the diversion port corresponds to a limit hole at the bottom of a valve core push rod.
Through adopting above-mentioned technical scheme, open inside the case has the reposition of redundant personnel passageway, and case both ends lateral wall is fixed with the seal post, sets up the seal post and is convenient for seal the choke, reaches the effect that the control was turned to.
The utility model is further provided with: the control mechanism comprises a fixed plate fixed on two sides of the valve core push rod and a control rod fixed on the fixed plate.
Through adopting above-mentioned technical scheme, control mechanism is including being fixed in the fixed plate of case push rod both sides, be fixed in the control lever of fixed plate, is convenient for push down control mechanism through setting up the control lever, and control mechanism pushes down and drives case push rod and move down, and the restriction to the case is realized to the downward movement of case push rod, further realizes the sealed of choke, realizes the control to turning to.
The utility model is further provided with: the top of the valve core seat is fixedly provided with a limiting piece, and the limiting piece is arranged between the valve core seat and the control mechanism.
Through adopting above-mentioned technical scheme, case seat top is fixed with spacing piece, and spacing piece sets up between valve core seat and control mechanism, sets up spacing piece and is convenient for carry out spacingly to it when control mechanism pushes down, avoids promoting too far.
The utility model is further provided with: and a return spring is sleeved on the outer wall of the top of the valve core seat.
Through adopting above-mentioned technical scheme, case seat top outer wall cover is equipped with reset spring, pushes away downwards and accomplish the control to turning to the back at control mechanism, reset spring can push back control mechanism, avoids turning to excessively.
The utility model is further provided with: locking bolts are respectively fixed at two ends of the valve core seat.
By adopting the technical scheme, the valve core seat is convenient to fix.
The beneficial effects of the utility model are as follows: the control principle is essentially a throttling control principle, and on the valve core control design, the backpressure principle is compounded, meanwhile, the valve core electric control servo pushing of the proportional valve is changed into manual pushing through a lower pressure plate, the steering control is realized by integrating the principle designs, and the electrohydraulic control can be completely replaced; and combines the advantages of the method, and has better performance and reliability; the steering speed can be controlled accurately through the arrangement of the control mechanism, the thrust is increased, and the oil cylinder speed is synchronously increased, so that the steering speed is faster and faster, the steering control is realized, and the steering speed is slower and slower; meanwhile, the device has the capability of overcoming the defects of larger control impact and poor speed control continuity, and has the characteristics of simple structure, low cost, small size, suitability for installation of a cab, high reliability and the like.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a sectional view of the present embodiment.
Fig. 2 is a schematic diagram of the valve core structure of the present embodiment.
In the figure, 1, a valve body; 2. an oil inlet; 3. an oil return port; 4. a valve core seat; 5. a valve core push rod; 6. a control mechanism; 7. a fixing plate; 8. a control lever; 9. a limiting hole; 10. a spool cavity; 11. a valve core spring; 12. a valve core; 13. a choke; 14. a limiting piece; 15. a return spring; 16. a locking bolt; 17. a shunt channel; 18. a sealing column; 19. and a flow guiding port.
Detailed Description
The technical scheme of the present utility model will be clearly and completely described in connection with specific embodiments. It will be apparent that the described embodiments are only some, but not all, embodiments of the 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.
Example 1: as shown in fig. 1 and 2, a steering control hydraulic control valve comprises a valve body 1, an oil inlet 2 is arranged at the bottom of the valve body 1, an oil return port 3 is arranged on the side wall of the valve body 1, a valve core seat 4 is fixed at the top of the valve body 1, a containing cavity is arranged in the valve core seat 4, a valve core push rod 5 is arranged in the containing cavity, the valve core push rod 5 is slidably connected with the inner wall of the valve core seat 4, a control mechanism 6 is also fixed at the top of the valve core push rod 5, the valve core push rod 5 can move up and down under the control of the control mechanism 6, a limit hole 9 is arranged at the bottom of the valve core seat 4, a valve core cavity 10 is also arranged in the valve body 1, valve core springs 11 are fixed at two ends of the inner wall of the valve core cavity 10, a valve core 12 is fixed at the bottom of the valve core spring 11, a throttle 13 is arranged at the bottom of the valve core cavity 10, the throttle 13 is communicated with the oil inlet 2, the oil return port 3 is communicated with the side wall of the valve core cavity 10, the bottom of the valve body 1 is provided with an oil inlet 2, the oil inlet 2 is connected with a steering oil cylinder for controlling steering, the higher the oil in the steering oil cylinder is, the faster the steering speed is, the steering can be controlled by controlling the oil quantity in the oil cylinder, in actual use, firstly, the oil inlet 2 is used for oil feeding, and as the oil inlet 2 is communicated with the valve core cavity 10 arranged in the valve body 1, a valve core 12 in the valve core cavity 10 overcomes the force of a valve core spring 11 at the top of the valve core 12 under the action of pressure oil in the oil inlet 2, and moves upwards to a limit port at the bottom of a valve core seat 4, a diversion port 19 at the top of the valve core 12 is attached to the limit port, at the moment, the opening of the throttle port 13 is the largest, the flow of the separated oil is the largest, the steering oil cylinder speed is zero, and the steering speed is also the same, and the vehicle keeps straight running at the moment; when steering is required to be controlled leftwards or rightwards, the left steering direction and the right steering direction are controlled through a steering control handle (which can be connected with a control mechanism 6 through an assembly control part), meanwhile, the control mechanism 6 is pressed down, the valve core push rod 5 is pushed to move downwards and acts on the valve core 12, the valve core 12 is pushed to move downwards, the sealing columns 18 at the two ends of the valve core 12 are sealed at the bottom, the opening of the throttle opening 13 is reduced from large, pressure oil cannot be led to the oil return opening 3 from the throttle opening 13, at the moment, the oil for pushing the steering oil cylinder is more and more, the thrust is synchronously increased, the oil cylinder speed is synchronously increased, so that the steering speed is faster and the steering control is realized, and conversely, the steering speed is slower and slower.
The valve core 12 is internally provided with a diversion channel 17, the side walls at two ends of the valve core 12 are fixedly provided with sealing columns 18, the sealing columns 18 are arranged to facilitate sealing of the throttle 13, the effect of controlling steering is achieved, the control mechanism 6 comprises fixing plates 7 fixed at two sides of the valve core push rod 5 and control rods 8 fixed on the fixing plates 7, the control mechanism 6 is convenient to push down the control mechanism 6 through the control rods 8, the control mechanism 6 pushes down to drive the valve core push rod 5 to move downwards, the valve core push rod 5 moves downwards to limit the valve core 12, sealing of the throttle 13 is further achieved, steering control is achieved, the top of the valve core seat 4 is fixedly provided with limiting pieces 14, the limiting pieces 14 are arranged between the valve core seat 4 and the control mechanism 6, limiting pieces 14 are arranged to facilitate limiting the control mechanism 6 when the control mechanism 6 pushes down, the control mechanism is prevented from being pushed down too far, reset springs 15 are sleeved on the outer walls of the top of the valve core seat 4, after the control mechanism 6 pushes down and steering control is completed, the control mechanism 6 can be pushed back, the control mechanism 6 is prevented from being excessively steering, and locking bolts 16 are respectively fixed at two ends of the valve core seat 4, and the control mechanism 4 is convenient to fix the valve core seat 4.
An oil inlet 2 is formed in the bottom of the valve body 1, the oil inlet 2 is connected to a steering oil cylinder for controlling steering, the more oil in the steering oil cylinder is, the higher the oil cylinder speed is, the faster the steering speed is, the steering can be controlled by controlling the oil quantity in the oil cylinder, in actual use, firstly, the oil inlet 2 is used for oil, as the oil inlet 2 is communicated with a valve core cavity 10 formed in the valve body 1, a valve core 12 in the valve core cavity 10 overcomes the force of a valve core spring 11 at the top of the valve core 12 under the action of pressure oil of the oil inlet 2, and moves upwards to a limit opening at the bottom of a valve core seat 4, a diversion opening 19 at the top of the valve core 12 is attached to the limit opening, at the moment, the opening of a throttle 13 is the largest, the flow of the separated oil is the largest, the steering oil cylinder speed is zero, and the steering speed is also the same, and the vehicle keeps running straight at the moment; when steering is required to be controlled leftwards or rightwards, the left steering direction and the right steering direction are controlled through a steering control handle (which can be connected with a control mechanism 6 through an assembly control part), meanwhile, the control mechanism 6 is pressed down, the valve core push rod 5 is pushed to move downwards and acts on the valve core 12, the valve core 12 is pushed to move downwards, the sealing columns 18 at the two ends of the valve core 12 are sealed at the bottom, the opening of the throttle opening 13 is reduced from large, pressure oil cannot be led to the oil return opening 3 from the throttle opening 13, at the moment, the oil for pushing the steering oil cylinder is more and more, the thrust is synchronously increased, the oil cylinder speed is synchronously increased, so that the steering speed is faster and the steering control is realized, and conversely, the steering speed is slower and slower.
Claims (6)
1. The utility model provides a steering control hydraulic pressure control valve, includes valve body (1), its characterized in that: the oil return valve is characterized in that an oil inlet (2) is formed in the bottom of the valve body (1), an oil return hole (3) is formed in the side wall of the valve body (1), a valve core seat (4) is fixed at the top of the valve body (1), a containing cavity is formed in the valve core seat (4), a valve core push rod (5) is arranged in the containing cavity, the valve core push rod (5) is slidably connected to the inner wall of the valve core seat (4), a control mechanism (6) is further fixed at the top of the valve core push rod (5), the valve core push rod (5) can move up and down under the control of the control mechanism (6), a limiting hole (9) is formed in the bottom of the valve core seat (4), a valve core cavity (10) is further formed in the valve body (1), valve core springs (11) are fixed at two ends of the inner wall of the valve core cavity (10), a valve core 12 is fixed at the bottom of the valve core spring (11), a throttle opening (13) is formed in the bottom of the valve core cavity (10), and the throttle opening (2) is communicated with the oil return hole (3).
2. The steering control hydraulic pilot valve according to claim 1, characterized in that: the valve core (12) is internally provided with a diversion channel (17), side walls at two ends of the valve core (12) are fixedly provided with sealing columns (18), the top of the valve core (12) is provided with a diversion opening (19), and the diversion opening (19) corresponds to a limit hole (9) at the bottom of the valve core push rod (5).
3. The steering control hydraulic pilot valve according to claim 1, characterized in that: the control mechanism (6) comprises fixing plates (7) fixed on two sides of the valve core push rod (5), and a control rod (8) fixed on the fixing plates (7).
4. The steering control hydraulic pilot valve according to claim 1, characterized in that: the top of the valve core seat (4) is fixedly provided with a limiting sheet (14), and the limiting sheet (14) is arranged between the valve core seat (4) and the control mechanism (6).
5. The steering control hydraulic pilot valve according to claim 1, characterized in that: the outer wall of the top of the valve core seat (4) is sleeved with a reset spring (15).
6. The steering control hydraulic pilot valve according to claim 1, characterized in that: locking bolts (16) are respectively fixed at two ends of the valve core seat (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322243037.4U CN220539999U (en) | 2023-08-21 | 2023-08-21 | Steering control hydraulic control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322243037.4U CN220539999U (en) | 2023-08-21 | 2023-08-21 | Steering control hydraulic control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220539999U true CN220539999U (en) | 2024-02-27 |
Family
ID=89964422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322243037.4U Active CN220539999U (en) | 2023-08-21 | 2023-08-21 | Steering control hydraulic control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220539999U (en) |
-
2023
- 2023-08-21 CN CN202322243037.4U patent/CN220539999U/en active Active
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