A dual-line safety valve for vehicles with sealing protection

Abstract

When the cam is in the closed position, the cam will move upward or downward to close the valve body, and the cam will move upward or downward to close the valve body, thereby preventing the cam from moving upward. When the cam is in the closed position, the cam will move upward or downward to close the valve body, thereby preventing the cam from moving upward or downward to close the valve body. When the cam is in the closed position, the cam will move upward or downward to close the valve body, thereby preventing the cam from moving upward or downward to close the valve body.

Description

Technical Field

[0001] The utility model relates to the technical field of safety valves, in particular to a double-pipeline safety valve for vehicles with sealing protection. Background Art

[0002] The dual-circuit safety valve for vehicles is one of the important components in the automobile hydraulic brake system, which is used to ensure the safety performance of the brake system in emergency situations; the dual-circuit safety valve is commonly used in automobile hydraulic brake systems, especially in large vehicles or heavy vehicles, such as trucks, buses, etc.

[0003] In the prior art, there is a dual-line safety valve with a publication number of CN2625683Y, and its working principle is as follows: under normal working conditions, the valve core is in the middle position of the inner cavity of the valve body under the action of the centering limit springs at both ends, and the system supplies oil to the A and B oil ports through the two end covers of the dual-line safety valve, and supplies oil to the oil port C and the suspension oil cylinder through the reserved channel between the valve core and the valve body. When any of the pipelines bursts or leaks due to unexpected reasons (such as port A), the valve core moves quickly (towards port A) under the action of the hydraulic oil on the corresponding side, and the line seal formed between the outer cone surface at the end of the valve core and the inner cone surface at the outlet end of the oil inlet hole on the end cover is used to close the oil port (A), while the hydraulic oil can continue to supply oil to the oil cylinder through the other oil port (B), so that the suspension system oil cylinder continues to function. However, the dual-circuit safety valve has a disadvantage: when the outer conical surface at the end of the valve core abuts against the inner conical surface at the outlet end of the oil inlet hole on the end cover, there is a lack of sealing protection mechanism between the outer conical surface at the end of the valve core and the inner conical surface at the outlet end of the oil inlet hole on the end cover, which makes it easy for the hydraulic oil to flow out through the gap between the outer conical surface at the end of the valve core and the inner conical surface at the outlet end of the oil inlet hole on the end cover, thereby affecting the safety of the dual-circuit safety valve. Therefore, we propose a dual-circuit safety valve for vehicles with sealing protection to solve the above problem. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a dual-pipeline safety valve for vehicles with sealing protection, which is used to solve the above problems.

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

[0006] A dual-circuit safety valve for vehicles with sealing protection comprises a dual-circuit safety valve body for vehicles, wherein a first oil port and a second oil port are respectively provided at both ends of the dual-circuit safety valve body for vehicles, a valve groove is provided in the dual-circuit safety valve body for vehicles, a plurality of limit grooves are respectively provided on the inner wall of the valve groove, a same valve core is installed in each of the plurality of limit grooves through an elastic connection mechanism, two first conical grooves are respectively provided on the inner wall of the valve groove, a first sealing ring is respectively provided in each of the two first conical grooves, and two second conical grooves are respectively provided on the valve core, a second sealing ring is respectively provided in each of the two second conical grooves.

[0007] Preferably, the valve groove is connected to the first oil port and the second oil port, and conical surfaces are provided at both ends of the valve groove to facilitate the supply of hydraulic oil to the valve groove through the first oil port and the second oil port at both ends of the dual-line safety valve body for vehicles.

[0008] Preferably, the plurality of limiting grooves are distributed in a circular array, and the plurality of limiting grooves are located in the middle of the valve groove.

[0009] Preferably, the elastic connection mechanism includes a limit plate, a first spring and a second spring, the limit plate is movably installed in the limit groove, the limit plate is fixedly connected to the valve core, one end of the first spring is fixedly installed on the top side of the limit plate, the other end of the first spring is fixedly installed on the top inner wall of the limit groove, one end of the second spring is fixedly installed on the bottom side of the limit plate, the other end of the second spring is fixedly installed on the bottom inner wall of the limit groove, and the cooperation of multiple elastic connection mechanisms facilitates the upward or downward movement of the valve core.

[0010] Preferably, a gap is provided between the valve core and the valve slot, and conical surfaces are provided at both ends of the valve core to facilitate the hydraulic oil to enter the middle part of the valve slot through the gap between the valve core and the valve slot.

[0011] Preferably, the two first conical grooves are respectively located at the two end conical surfaces of the valve groove, and the two second conical grooves are respectively located at the two end conical surfaces of the valve core, so that the two end conical surfaces of the valve core are respectively against the two end conical surfaces of the corresponding valve groove.

[0012] The beneficial effect of the utility model is that when the oil inlet of one of the oil inlets of the dual-line safety valve body for vehicles fails, the two ends of the valve core are moved upward or downward under the action of multiple elastic connection mechanisms, so that the conical surface of one end of the valve core is against the conical surface of one end of the valve groove. At this time, the first sealing ring fits with the second sealing ring to achieve a sealing protection effect, reduce the occurrence of hydraulic oil flowing out from the gap between them, and ensure the safety of the dual-line safety valve body for vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model in a three-dimensional partial cross-section;

[0014] Figure 2 It is a structural schematic diagram of a partial cross-section of the valve core of the utility model;

[0015] Figure 3 For this utility model Figure 2 Schematic diagram of the structure of part A.

[0016] In the figure: 1. dual-line safety valve body for vehicles; 2. first oil port; 3. second oil port; 4. valve groove; 5. limit groove; 6. limit plate; 7. first spring; 8. second spring; 9. valve core; 10. first conical groove; 11. first sealing ring; 12. second conical groove; 13. second sealing ring. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] Example: Refer to Figure 1-3 A dual-line safety valve for a vehicle with sealing protection comprises a dual-line safety valve body 1 for a vehicle, a first oil port 2 and a second oil port 3 are respectively provided at both ends of the dual-line safety valve body 1 for a vehicle, a valve groove 4 is provided in the dual-line safety valve body 1 for a vehicle, a plurality of limit grooves 5 are respectively provided on the inner wall of the valve groove 4, a same valve core 9 is installed in each of the plurality of limit grooves 5 through an elastic connection mechanism, the elastic connection mechanism comprises a limit plate 6, a first spring 7 and a second spring 8, a limit plate 6 is movably installed in the limit groove 5, the limit plate 6 is fixedly connected to the valve core 9, and the top side of the limit plate 6 is fixedly installed There is one end of a first spring 7, and the other end of the first spring 7 is fixedly installed on the top inner wall of the limiting groove 5. One end of a second spring 8 is fixedly installed on the bottom side of the limiting plate 6, and the other end of the second spring 8 is fixedly installed on the bottom inner wall of the limiting groove 5. Through the cooperation of multiple elastic connection mechanisms, it is convenient to realize the upward or downward movement of the valve core 9; two first conical grooves 10 are respectively provided on the inner wall of the valve groove 4, and a first sealing ring 11 is arranged in the two first conical grooves 10; two second conical grooves 12 are respectively provided on the valve core 9, and a second sealing ring 13 is arranged in the two second conical grooves 12.

[0019] Furthermore, the valve groove 4 is connected to the first oil port 2 and the second oil port 3, and conical surfaces are provided at both ends of the valve groove 4 to facilitate the hydraulic oil to be supplied to the valve groove 4 through the first oil port 2 and the second oil port 3 at both ends of the dual-line safety valve body 1 for vehicles.

[0020] Furthermore, the plurality of limiting grooves 5 are distributed in a circular array, and the plurality of limiting grooves 5 are located in the middle of the valve groove 4 .

[0021] Furthermore, a gap is provided between the valve core 9 and the valve slot 4 , and conical surfaces are provided at both ends of the valve core 9 , so that the hydraulic oil can enter the middle part of the valve slot 4 through the gap between the valve core 9 and the valve slot 4 .

[0022] Furthermore, the two first conical grooves 10 are respectively located at the two end conical surfaces of the valve groove 4, and the two second conical grooves 12 are respectively located at the two end conical surfaces of the valve core 9, so that the two end conical surfaces of the valve core 9 are respectively against the two end conical surfaces of the corresponding valve groove 4.

[0023] When in use: Under normal working conditions, the valve core 9 is located in the middle position of the valve groove 4, and the hydraulic oil is supplied to the valve groove 4 through the first oil port 2 and the second oil port 3 at both ends of the dual-line safety valve body 1 for vehicles, so that the hydraulic oil enters the middle part of the valve groove 4 through the gap between the valve core 9 and the valve groove 4, and the hydraulic oil enters the oil cylinder from the middle position of the valve groove 4. When the first oil port 2 fails due to an accident, the valve core 9 moves upward under the action of the hydraulic oil on the corresponding side, so that the multiple limit plates 6 on the valve core 9 slide upward in the corresponding limit grooves 5 respectively. At this time, the multiple first springs 7 are deformed and compressed by force, and the multiple second springs 8 are deformed and stretched by force until the conical surface at the top of the valve core 9 is against the conical surface at the top of the valve groove 4. At this time, the first sealing ring 11 and the second sealing ring 13 are in contact with each other to achieve a sealing effect, so that the hydraulic oil can be supplied to the oil cylinder through the second oil port 3, so that the oil cylinder of the suspension system of the vehicle continues to function. Conversely, when the second oil port 3 fails due to an accident, the principle is the same.

[0024] To sum up, when one of the oil inlets of the dual-line safety valve body 1 for vehicles fails, under the action of multiple elastic connection mechanisms, the two ends of the valve core 9 move upward or downward, so that the conical surface of one end of the valve core 9 abuts against the conical surface of one end of the valve groove 4. At this time, the first sealing ring 11 and the second sealing ring 13 fit together to achieve a sealing protection effect, reduce the occurrence of hydraulic oil flowing out from the gap between them, and ensure the safety of the use of the dual-line safety valve body 1 for vehicles.

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dual-line safety valve for a vehicle with sealing protection, comprising a dual-line safety valve body for a vehicle (1), characterized in that: The two ends of the dual-line safety valve body (1) for a vehicle are respectively provided with a first oil port (2) and a second oil port (3); the dual-line safety valve body (1) for a vehicle is provided with a valve groove (4); the inner wall of the valve groove (4) is respectively provided with a plurality of limit grooves (5); the same valve core (9) is installed in each of the plurality of limit grooves (5) via an elastic connection mechanism; the inner wall of the valve groove (4) is respectively provided with two first conical surface grooves (10); the two first conical surface grooves (10) are respectively provided with a first sealing ring (11); the valve core (9) is respectively provided with two second conical surface grooves (12); the two second conical surface grooves (12) are respectively provided with a second sealing ring (13).

2. A dual-line safety valve for vehicles with sealing protection according to claim 1, characterized in that: The valve groove (4) is connected to the first oil port (2) and the second oil port (3), and conical surfaces are provided at both ends of the valve groove (4).

3. A dual-line safety valve for vehicles with sealing protection according to claim 1, characterized in that: The plurality of limit grooves (5) are distributed in a circular array, and the plurality of limit grooves (5) are located in the middle of the valve groove (4).

4. A dual-line safety valve for vehicles with sealing protection according to claim 1, characterized in that: The elastic connection mechanism comprises a limit plate (6), a first spring (7) and a second spring (8); the limit plate (6) is movably installed in the limit groove (5); the limit plate (6) is fixedly connected to the valve core (9); one end of the first spring (7) is fixedly installed on the top side of the limit plate (6); the other end of the first spring (7) is fixedly installed on the top inner wall of the limit groove (5); one end of the second spring (8) is fixedly installed on the bottom side of the limit plate (6); the other end of the second spring (8) is fixedly installed on the bottom inner wall of the limit groove (5).

5. A dual-line safety valve for vehicles with sealing protection according to claim 1, characterized in that: A gap is provided between the valve core (9) and the valve groove (4), and conical surfaces are provided at both ends of the valve core (9).

6. A dual-line safety valve for vehicles with sealing protection according to claim 1, characterized in that: The two first conical surface grooves (10) are respectively located at the conical surfaces at both ends of the valve groove (4), and the two second conical surface grooves (12) are respectively located at the conical surfaces at both ends of the valve core (9).

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