Steering valve group

Abstract

The utility model discloses a diverter valve group, including diverter valve body and limit mechanism, the diverter valve body is equipped with the wiring sleeve, the limit mechanism includes with the wiring sleeve threaded plug-in fit external thread pipe and with the internal thread pipe threaded plug-in fit external thread pipe, the side wall of internal thread pipe is movably embedded with the elastic piece, and the elastic piece is movably embedded in the side wall of internal thread pipe. At least one pair of elastic pieces are distributed in the axial direction of the inner threaded pipe, stress blocks are arranged on the faces, facing the outer portion of the inner threaded pipe, of the elastic pieces, and rubber ejecting blocks are arranged on the faces, facing the inner portion of the inner threaded pipe, of the elastic pieces; the end, facing the tail of the inner threaded pipe, of the elastic piece is hinged to the inner threaded pipe, and the ends, facing the front of the inner threaded pipe, of the elastic piece and the stress block are provided with inclined faces. The steering valve has a line limiting and protecting function, and the problem that normal work of the steering valve body is affected due to falling and damage caused by pulling and bending of the line of the steering valve body is solved as much as possible.

Description

Technical Field

[0001] The utility model relates to the technical field of steering valves, in particular to a steering valve group. Background Art

[0002] As the name implies, steering valves are mainly used to control the flow direction of fluids or gases in a system. The principle of steering valves is to control the flow direction of the medium based on the position change of the valve core. A movable valve core is used. By changing the position of the valve core, the flow direction of the medium can be changed. This working principle makes the steering valve play an important role in hydraulic or pneumatic systems, realizing the control and orientation of the fluid.

[0003] Steering valves play an irreplaceable role in industrial production, especially in the hydraulic power steering systems of construction machinery. In these systems, the steering valve is generally equipped with a small motor and an external double-acting cylinder. When the driver turns the steering wheel, the pilot working pressure is switched to the small motor through the movement of the valve core with the help of the pilot working pressure, thereby reducing the intensity of manually turning the steering wheel. When the steering operation is terminated, the valve core will automatically return to the neutral position, cutting off the power of the power motor to ensure the stability and safety of the system. Therefore, the stability of the line connection is related to whether the steering valve can operate normally and stably. However, the steering valves currently on the market are generally connected to the steering valve in the line, and lack an effective protective structure. This results in the line being easily loosened and falling off at the connection due to pulling during use, affecting the normal operation of the steering valve and causing unnecessary trouble. In view of this, the present application proposes a steering valve group. Utility Model Content

[0004] The utility model aims to provide a steering valve group, which has a limit protection function for the line, and avoids as much as possible the problem that the line of the steering valve body falls off and is damaged due to pulling and bending, which affects the normal operation of the steering valve body.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A steering valve group includes a steering valve body and a limiting mechanism, wherein the steering valve body is provided with a wiring sleeve, and the limiting mechanism includes an externally threaded tube threadedly plug-in compatible with the wiring sleeve and an internally threaded tube threadedly plug-in compatible with the externally threaded tube, and a spring sheet is movably embedded on the side wall of the internally threaded tube, and the spring sheets are distributed axially along the internally threaded tube and at least one pair is provided, a force block is provided on the side of the spring sheet facing the outside of the internally threaded tube, and a rubber top block is provided on the side of the spring sheet facing the inside of the internally threaded tube.

[0007] Preferably, the spring piece is hinged to the internal threaded tube at one end facing the rear portion of the internal threaded tube, and the spring piece and the force-bearing block have an inclined surface at one end facing the front portion of the internal threaded tube.

[0008] Preferably, the thickness of the rubber top block gradually increases toward the tail of the internally threaded tube, and an adapting groove is provided on a side of the rubber top block away from the elastic sheet.

[0009] Preferably, a buffer hole is provided in the rubber top block, and the cross section of the buffer hole is an elliptical structure.

[0010] Preferably, the spring piece is provided with a slot at one end facing the rear end of the internal threaded tube, a shaft rod is passed through the slot, the shaft rod is rotatably embedded in the internal threaded tube, and a torsion spring is sleeved on the shaft rod.

[0011] Preferably, one end of the tail portion of the internally threaded tube is coaxially connected to a rubber sleeve, and a spring is coaxially embedded in the rubber sleeve.

[0012] Preferably, a hexagonal end cap is provided at the tail end of the externally threaded tube, and a convex ridge is provided on the outer wall of the internally threaded tube toward the tail end.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] The utility model arranges the internal threaded tube and the spring sheet, and the line passes through the rubber sleeve, the internal threaded tube, the external threaded tube in sequence and is inserted into the wiring sleeve to be connected with the steering valve body, the external threaded tube is spirally plugged on the wiring sleeve and tightened, and then the internal threaded tube is screwed into the external threaded tube. When the internal threaded tube is screwed into the external threaded tube, the force block is squeezed to push the spring sheet to rotate toward the internal threaded tube, and the line can be clamped and positioned in the internal threaded tube by using the rubber top blocks on at least one pair of spring sheets, which effectively avoids the problem of the line loosening and falling off at the connection due to pulling. In addition, the rubber sleeve arranged at the tail end of the internal threaded tube and the spring embedded in the rubber sleeve have good elastic protection performance, so as to avoid damage caused by bending of the line as much as possible.

[0015] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the limiting mechanism of the utility model;

[0018] Figure 3 This is a disassembly diagram of the limiting mechanism of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the shrapnel of the utility model;

[0020] Figure 5 It is a cross-sectional view of the rubber sleeve of the utility model.

[0021] In the figure: 1. Steering valve body; 2. Wiring sleeve; 3. Limiting mechanism; 4. Externally threaded pipe; 5. Internally threaded pipe; 6. Rubber sleeve; 7. Hexagonal end cap; 8. Spring; 9. Concave platform; 10. Shrapnel; 11. Rubber top block; 12. Force block; 13. Adapter groove; 14. Buffer hole; 15. Notch; 16. Shaft rod; 17. Torsion spring. DETAILED DESCRIPTION

[0022] In the description of the present utility model, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present utility model. The following is a detailed description of various embodiments of the present utility model in conjunction with the drawings.

[0023] Example

[0024] See also Figures 1 to 5 The utility model preferably provides a technical solution: a steering valve group, including a steering valve body 1 and a limiting mechanism 3, the steering valve body 1 is provided with a wiring sleeve 2, the limiting mechanism 3 includes an external threaded tube 4 threadedly plugged and adapted to the wiring sleeve 2 and an internal threaded tube 5 threadedly plugged and adapted to the external threaded tube 4, a spring sheet 10 is movably embedded on the side wall of the internal threaded tube 5, the spring sheet 10 is distributed along the axial direction of the internal threaded tube 5 and at least one pair is provided, a force block 12 is provided on the side of the spring sheet 10 facing the outside of the internal threaded tube 5, and a rubber top block 11 is provided on the side of the spring sheet 10 facing the inside of the internal threaded tube 5, through which In terms of structure, the line passes through the rubber sleeve 6, the internal threaded tube 5, the external threaded tube 4 in sequence and is inserted into the wiring sleeve 2 to be connected with the steering valve body 1. The external threaded tube 4 is screwed on the wiring sleeve 2 and tightened, and then the internal threaded tube 5 is screwed into the external threaded tube 4. While the internal threaded tube 5 is screwed into the external threaded tube 4, the force block 12 is squeezed to push the spring piece 10 to rotate toward the internal threaded tube 5. By using the rubber top block 11 on at least one pair of spring pieces 10, the line can be clamped and positioned in the internal threaded tube 5, effectively avoiding the problem of the line loosening and falling off at the connection due to pulling.

[0025] As a preferred implementation of this embodiment, a recess is provided on the outer wall of the internal threaded tube 5, and the spring piece 10 is embedded in the recess 9. The spring piece 10 is hinged to the internal threaded tube 5 at one end facing the tail of the internal threaded tube 5. Specifically, a notch 15 is provided at one end of the spring piece 10 facing the tail of the internal threaded tube 5, and a shaft 16 is passed through the notch 15. The shaft 16 is rotatably embedded in the internal threaded tube 5, thereby realizing the hinge connection between the spring piece 10 and the internal threaded tube 5. A torsion spring 17 is mounted on the shaft 16. When the internal threaded tube 5 is pulled out of the external threaded tube 4, the torsion spring 17 provides an axial elastic force to drive the spring piece 10 to rotate and reset, which is convenient for operation. The spring piece 10 and the force block 12 have an inclined surface at one end facing the front of the internal threaded tube 5, which is convenient for insertion into the external threaded tube 4.

[0026] As a preferred implementation of this embodiment, the thickness of the rubber top block 11 gradually increases toward the tail of the internal threaded tube 5, thereby forming an inclined surface. With this structure, when the spring piece 10 rotates toward the internal threaded tube 5, the inclined surface of the rubber top block 11 can have more contact with the circuit. The side of the rubber top block 11 away from the spring piece 10 is provided with an adapting groove 13 to improve the clamping and positioning effect of the circuit. A buffer hole 14 is provided in the rubber top block 11. The cross section of the buffer hole 14 is an elliptical structure, which is used to improve the buffering performance of the rubber top block 11. The circuit can be better clamped and positioned through the compression of the rubber top block 11.

[0027] As a preferred implementation of this embodiment, a rubber sleeve 6 is coaxially connected to one end of the tail of the internal threaded tube 5, and a spring 8 is coaxially embedded in the rubber sleeve 6. The rubber sleeve 6 provided at the tail end of the internal threaded tube 5 and the spring 8 embedded in the rubber sleeve 6 can provide elastic protection performance to avoid damage caused by line bending. A hexagonal end cap 7 is provided at the tail end of the external threaded tube 4, and a convex ridge is provided on the outer wall of the internal threaded tube 5 toward the tail end, which is conducive to the screwing of the external threaded tube 4 and the internal threaded tube 5.

[0028] When in use, the line is passed through the rubber sleeve 6, the internal threaded tube 5, the external threaded tube 4 in sequence and inserted into the wiring sleeve 2 to connect with the steering valve body 1, and then the external threaded tube 4 is spirally plugged into the wiring sleeve 2 with the hexagonal end cap 7 and tightened, and then the internal threaded tube 5 is screwed into the external threaded tube 4. While the internal threaded tube 5 is screwed into the external threaded tube 4, the force block 12 is squeezed to push the spring piece 10 to rotate toward the internal threaded tube 5. The line can be clamped and positioned in the internal threaded tube 5 by using the rubber top block 11 on at least one pair of spring pieces 10, which effectively avoids the problem of the line loosening and falling off at the connection due to pulling. In addition, the rubber sleeve 6 set at the tail end of the internal threaded tube 5 and the spring 8 embedded in the rubber sleeve 6 have good elastic protection performance, which can avoid damage caused by bending of the line as much as possible.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. There are many ways of detachable installation, for example, it can be through the method of plug-in and buckle matching, and for example, through the method of bolt connection, etc.

[0030] The above clearly and completely describes the concept, specific structure and technical effects of the utility model in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the utility model. In addition, all the connection / connection relationships mentioned in the text do not refer to the direct connection of components, but refer to the fact that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation.

[0031] The specific description of the present invention in the above embodiments is only used to further illustrate the present invention and cannot be understood as limiting the scope of protection of the present invention. Technical engineers in this field may make some non-essential improvements and adjustments to the present invention based on the contents of the above-mentioned utility model, which fall within the scope of protection of the present invention.

Claims

1. A steering valve assembly, comprising a steering valve body (1) and a limit mechanism (3), wherein the steering valve body (1) is provided with a wiring sleeve (2), and is characterized in that: The limiting mechanism (3) comprises an externally threaded tube (4) threadedly plug-in-matched with the wiring sleeve (2) and an internally threaded tube (5) threadedly plug-in-matched with the externally threaded tube (4), a spring sheet (10) being movably embedded on the side wall of the internally threaded tube (5), the spring sheets (10) being distributed axially along the internally threaded tube (5) and at least one pair being provided, a force-bearing block (12) being provided on one side of the spring sheet (10) facing the outside of the internally threaded tube (5), and a rubber top block (11) being provided on one side of the spring sheet (10) facing the inside of the internally threaded tube (5).

2. A steering valve assembly according to claim 1, characterized in that: The spring piece (10) is hinged to the internal threaded tube (5) at one end facing the rear of the internal threaded tube (5), and the spring piece (10) and the force bearing block (12) have inclined surfaces at one end facing the front of the internal threaded tube (5).

3. A steering valve assembly according to claim 1, characterized in that: The thickness of the rubber top block (11) gradually increases toward the rear of the internally threaded tube (5), and an adapting groove (13) is provided on a side of the rubber top block (11) away from the spring sheet (10).

4. A steering valve assembly according to claim 1, characterized in that: A buffer hole (14) is provided in the rubber top block (11), and the cross section of the buffer hole (14) is an elliptical structure.

5. The steering valve assembly according to claim 1, characterized in that: The spring piece (10) is provided with a notch (15) at one end facing the rear end of the internally threaded tube (5), a shaft (16) is passed through the notch (15), the shaft (16) is rotatably embedded in the internally threaded tube (5), and a torsion spring (17) is sleeved on the shaft (16).

6. A steering valve assembly according to claim 1, characterized in that: One end of the tail of the internally threaded tube (5) is coaxially connected to a rubber sleeve (6), and a spring (8) is coaxially embedded in the rubber sleeve (6).

7. The steering valve assembly according to claim 1, characterized in that: The tail end of the externally threaded tube (4) is provided with a hexagonal end cap (7), and the outer wall of the internally threaded tube (5) facing the tail end is provided with a convex ridge.

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