Air reset pile-up valve

Abstract

The utility model provides a pneumatic reset integrated valve which comprises a valve body assembly, an ejector rod assembly and an upper valve rod assembly, and the ejector rod assembly is arranged on the valve body assembly to form an upper valve rod containing space. The valve body is provided with a valve rod cavity, the rear cover and the valve seat are arranged on openings in the two sides of the valve rod cavity, the valve rod assembly, the rear cover O-shaped ring and the return spring are arranged in the valve rod cavity, the valve rod assembly comprises a valve rod and five sealing rings arranged on the valve rod in a sleeving mode, and the end, facing the rear cover, of the valve rod is provided with a spring groove used for containing the return spring. The two ends of the return spring abut against and are connected with the bottom face of the spring groove and the rear cover respectively. The upper valve rod containing space is connected with the valve rod cavity through an air channel, and a reset air channel penetrating through the valve rod is formed in the bottom face of the spring groove and connected with the upper valve rod containing space. The normal function of controlling the on-off of an air channel is guaranteed, spring reset can be achieved through pneumatic operation, the performance of the spring is more reliable, and the service life of the spring is longer.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of vehicle devices field, specifically relate to a kind of structure reliable gas reset integrated valve. BACKGROUND

[0002] Commercial vehicle in order to realize diversified function, while considering cost, function implementation will use various functional valves, such as reversing valve in shift system, stop valve, handle valve, also, such as main auxiliary box structure mechanical transmission, auxiliary box gear position conversion uses gas valve and actuating mechanism, currently, the gas valve used by main auxiliary box structure transmission is two-position five-way structure, according to the different gear, gas valve has mechanical control and pneumatic control.

[0003] In prior art, the valve of most transmissions is double-control integrated valve, for example, patent announcement No.CN 104033626B discloses a double-control integrated valve, which effectively integrates two-position two-way mechanical control valve and two-position five-way pneumatic control valve, but in actual working condition, integrated valve is reset by spring, and if spring breaks or force value attenuates during use, it will affect product performance, because automobile product three-pack cycle is long.

[0004] In order to solve this problem, a new structure is needed to make up for hidden danger caused by spring break or force value attenuation. CONTENT OF UTILITY MODEL

[0005] In view of the above defects, the purpose of the utility model is to provide a kind of structure reliable gas reset integrated valve, to solve the problems of prior art.

[0006] To achieve the above object, the utility model adopts the following technical solutions:

[0007] The application discloses an air reset integrated valve, which comprises a valve body assembly, a top rod assembly and an upper valve rod assembly, the top rod assembly is arranged on the valve body assembly, the top rod assembly and the valve body assembly form an upper valve rod accommodating space, the upper valve rod assembly is arranged in the upper valve rod accommodating space, the valve body assembly comprises a valve body with a valve rod cavity, rear covers arranged on both sides of the valve rod cavity, a valve seat, a valve rod assembly arranged in the valve rod cavity, a rear cover O-shaped ring and a reset spring, wherein the valve rod assembly comprises a valve rod, five sealing rings sleeved on the valve rod, an end of the valve rod towards the rear cover is provided with a spring groove for accommodating the reset spring, and two ends of the reset spring are respectively abutted against a bottom surface connected with the spring groove and the rear cover; an air path of the upper valve rod accommodating space is connected with the valve rod cavity, a reset air path of the bottom surface of the spring groove is connected with the upper valve rod accommodating space, and an annular air-tight groove is arranged on an opening end surface of the valve rod cavity and an outer surface connected with the rear cover, and the rear cover O-shaped ring is arranged in the annular air-tight groove to prevent gas from leaking from the valve rod cavity and the surface connected with the rear cover.

[0008] According to the air reset integrated valve, the valve body assembly further comprises a piston and a piston V-shaped ring, and the piston and the piston V-shaped ring are arranged in the valve seat.

[0009] According to the air reset integrated valve, the valve body is provided with a first air inlet connected with the upper valve rod accommodating space, and the upper valve rod assembly is used for opening and closing the air flow of the first air inlet.

[0010] According to the air reset integrated valve, the upper valve rod assembly comprises a spring, a lower stop block, a middle separation sleeve, two upper valve rod O-shaped rings, an upper stop block and an upper valve rod, wherein,

[0011] An end of the upper valve rod towards the valve rod cavity is provided with a spring groove, the other end of the upper valve rod is connected with the top rod assembly, one end of the spring is arranged in the spring groove, and the other end of the spring is connected with a bottom surface of the upper valve rod accommodating space; the lower stop block, the upper valve rod O-shaped ring, the middle separation sleeve, the upper valve rod O-shaped ring and the upper stop block are sequentially arranged in the upper valve rod accommodating space, a gas passage of the middle separation sleeve corresponds to the position of the first air inlet and is used for flowing gas, the upper stop block is a hollow cylinder with a fixed part protruding radially from one end surface, two surfaces of the fixed part are connected with the valve body and the top rod assembly respectively, the upper valve rod sequentially penetrates through the lower stop block, the upper valve rod O-shaped ring, the middle separation sleeve, the upper valve rod O-shaped ring and the upper stop block, and the upper valve rod is provided with an air inlet air path.

[0012] The gas reset integrated valve according to the embodiment of the present application, the top rod assembly comprises a top rod seat, a top rod, a top rod seat O-shaped ring and a steel sleeve, wherein the top rod seat is a hollow cylinder with a radial protruding fixed flange at one end face, the fixed flange of the top rod seat is connected with the valve body through a screw rod locking, the inner edge face of the hollow cylinder of the top rod seat comprises a two-step radial inward stepped portion, the top rod seat O-shaped ring and the steel sleeve are sequentially arranged in the hollow cylinder of the top rod seat and abut against the two-step stepped portion in sequence; the top rod comprises a top rod flange at one end of the top rod, the diameter of the top rod flange is greater than the diameter of the two-step stepped portion, the top rod penetrates through the top rod seat O-shaped ring and the steel sleeve, and the two end faces of the top rod flange are connected with the bottom face of the two-step stepped portion and the end face of the upper valve rod respectively.

[0013] The gas reset integrated valve according to the embodiment of the present application, the valve body is provided with a third gas inlet corresponding to the position of the piston; the valve body is also provided with a first working port, a second working port, a first exhaust port and a second exhaust port, and the first working port, the second working port, the first exhaust port and the second exhaust port are respectively connected with the valve rod cavity in a gas path.

[0014] The gas reset integrated valve according to the embodiment of the present application, the first exhaust port and the second exhaust port are connected with an exhaust cap and an exhaust gasket at the opening.

[0015] The design idea of the present application is to design a gas reset integrated valve, which has a structure superior to the prior art integrated valve, and can not only ensure the normal control gas path on-off function, but also rely on gas to realize spring reset, so that the performance of the spring is more reliable and the service life is longer.

[0016] Due to the adoption of the above technical features, the present application has the following advantages and positive effects compared with the prior art:

[0017] Firstly, the integrated valve of the present application can not only ensure the normal control gas path on-off function, but also rely on gas to realize spring reset, so that the performance of the spring is more reliable and the service life is longer.

[0018] Of course, any one of the specific embodiments implementing the content of the present application does not necessarily have all the above technical effects at the same time. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a schematic view of the appearance of the gas reset integrated valve of the present application;

[0020] Figure 2 is a schematic view of the cross section of the gas reset integrated valve of the present application;

[0021] Figure 3 is another schematic view of the cross section of the present application;

[0022] Figure 4 is the valve body sectional view schematic diagram of the application;

[0023] Figure 5 is the gas reset gas circuit schematic diagram of the application;

[0024] Figure 6 is the upper valve rod assembly schematic diagram of the application;

[0025] Figure 7 is the ejector rod assembly schematic diagram of the application. DETAILED DESCRIPTION

[0026] For the convenience of understanding, the preferred embodiments of the utility model are described in further detail below in combination with the drawings.

[0027] Please refer to Figure 1 The appearance schematic diagram of the gas reset integrated valve of the application, the gas reset integrated valve of the application is used for realizing diversified functions of commercial vehicles, for example, the reversing valve, the stop valve, the handle valve in the gear shifting system, for example, the mechanical transmission of the main and auxiliary box structure, the auxiliary box gear position conversion adopts the gas valve and the actuator, the structure of the gas reset integrated valve of the application is superior to the integrated valve of the prior art, can guarantee the normal control gas circuit on-off function, and can also rely on the pneumatic to realize the spring reset, the performance of the spring is more reliable by the pneumatic auxiliary spring work, and the service life is longer.

[0028] Please refer to Figure 2 The sectional view schematic diagram of the gas reset integrated valve of the application, the integrated valve includes a valve body assembly 10, an ejector rod assembly 30 and an upper valve rod assembly 20, the ejector rod assembly 30 is arranged on the valve body assembly 10, the ejector rod assembly 30 and the valve body assembly 10 form an upper valve rod containing space 29, the upper valve rod assembly 20 is arranged in the upper valve rod containing space 29, please refer to Figure 4 , the valve body assembly 10 includes a valve body 11 with a valve rod cavity, a rear cover 12 and a valve seat 13 arranged at the two side openings of the valve rod cavity, a valve rod assembly 14 arranged in the valve rod cavity, a rear cover O-ring 15 and a return spring 16, the rear cover 12 and the valve seat 13 are respectively connected with the two openings of the valve rod cavity through screw rods.

[0029] Figure 5 In the valve rod assembly 14, the valve rod assembly 14 includes a valve rod 141 and five sealing rings 142 sleeved on the valve rod 141, the five sealing rings 142 form two working gas circuits without gas leakage in the valve rod cavity, the valve rod 141 is provided with a spring groove for accommodating the return spring 16 at one end towards the rear cover 12, the two ends of the return spring 16 are respectively abutted against the bottom surface connected with the spring groove and the rear cover 12, Figure 2 In the valve rod assembly 14, the valve rod assembly 14 includes a valve rod 141 and five sealing rings 142 sleeved on the valve rod 141, the five sealing rings 142 form two working gas circuits without gas leakage in the valve rod cavity, the valve rod 141 is provided with a spring groove for accommodating the return spring 16 at one end towards the rear cover 12, the two ends of the return spring 16 are respectively abutted against the bottom surface connected with the spring groove and the rear cover 12, Figure 3In the middle, the return spring 16 is compressed to the maximum compression state, where the relaxation state is relative to the compression state of the return spring 16, which is not as high, but not completely straight relaxation; the upper valve stem containing space 29 is connected to the valve stem cavity, and the bottom surface of the spring groove is provided with a reset gas path 1411 penetrating the valve stem 141 to connect the upper valve stem containing space 29, as shown in Figure 5 In the middle, the return spring 16 is compressed to the maximum compression state, where the relaxation state is relative to the compression state of the return spring 16, which is not as high, but not completely straight relaxation; the upper valve stem containing space 29 is connected to the valve stem cavity, and the bottom surface of the spring groove is provided with a reset gas path 1411 penetrating the valve stem 141 to connect the upper valve stem containing space 29, as shown in Figure 4 As shown, the opening end surface of the valve stem cavity and the outer surface of the rear cover 12 are provided with an annular airtight groove, and the rear cover O-ring 15 is arranged in the annular airtight groove to prevent gas leakage from the surface connecting the valve body 11 and the rear cover 12. As described above, the pressure gas in the reset gas path 1411 comes from the upper valve stem containing space 29 to the rear cover 12, so the gas pressure in the groove of the rear cover 12 is greater than that without the reset gas path 1411 in the prior art, and the arrangement of the rear cover O-ring 15 can improve the airtightness of the rear cover 12. When gas reset is performed, as shown in Figure 5 As shown, the groove of the rear cover 12 is filled with pressure gas, and all parts are affected by gas pressure, but the valve stem 141 is a movable part that is pushed to the left by gas pressure to achieve gas reset, and other parts are fixed parts that are not pushed.

[0030] Please refer to Figure 4 The valve body assembly 10 further comprises a piston 17 and a piston V-ring 18, the piston 17 and the piston V-ring 18 are arranged in the valve seat 13, and the piston 17 is fixedly connected to the valve stem 141. The piston 17 is affected by gas pressure to move to the right, and is affected by spring force and gas pressure to move to the left for switching the working port. The piston V-ring 18 is arranged on the piston 17 for airtightness. In addition, the valve body 11 is provided with a first gas inlet 1 connected to the upper valve stem containing space 29, and the upper valve stem assembly 20 is used to open and close the gas flow of the first gas inlet 1. The gas pressure entering the upper valve stem containing space 29 from the first gas inlet 1 is working gas pressure, and the working gas pressure enters the valve stem cavity from the first gas inlet 1, passes through the upper valve stem assembly 20 and the upper valve stem containing space 29, and then exits from the working port; Figure 4 In the middle, the valve body 11 is further provided with a second gas inlet 2, which is a gas inlet standby port.

[0031] Please refer to Figure 6, the upper valve rod assembly 20 includes a spring 27, a lower stopper 28, a middle spacer 23, two upper valve rod O-rings 24, an upper stopper 25 and an upper valve rod 26, wherein the upper valve rod 26 is provided with a spring groove at one end of the upper valve rod 26 facing the valve rod cavity, the other end of the upper valve rod 26 is connected to the ejector rod assembly 30, one end of the spring 27 is arranged in the spring groove, the other end of the spring 27 is connected to the bottom surface of the upper valve rod accommodating space 29, after assembly, the spring force of the spring 27 presses the upper valve rod 26 towards the ejector rod assembly 30, and when the ejector rod assembly 30 presses the upper valve rod 26, the spring 27 is in a compressed state and waits for the pressing force of the ejector rod assembly 30 to disappear to pop up the upper valve rod 26; the lower stopper 28, the two upper valve rod O-rings 24, the middle spacer 23, the two upper valve rod O-rings 24 and the upper stopper 25 are sequentially arranged in the upper valve rod accommodating space 29, the air passage of the middle spacer 23 corresponds to the position of the first air inlet 1 for gas circulation; the upper stopper 25 is a hollow cylinder with a radial protruding fixed part on one end surface, the two surfaces of the fixed part are connected to the valve body 11 and the ejector rod assembly 30 respectively, the valve body 11 and the ejector rod assembly 30 fix the upper stopper 25, and the upper stopper 25 is located at the opening for limiting the lower stopper 28, the two upper valve rod O-rings 24 and the middle spacer 23; the upper valve rod 26 sequentially penetrates the lower stopper 28, the two upper valve rod O-rings 24, the middle spacer 23, the two upper valve rod O-rings 24 and the upper stopper 25, the upper valve rod 26 can move smoothly in the lower stopper 28, the two upper valve rod O-rings 24 and the middle spacer 23, the upper valve rod 26 is provided with an air inlet gas path, when the air inlet gas path corresponds to the air passage of the middle spacer 23, the working gas pressure can enter the upper valve rod accommodating space 29, and after the upper valve rod 26 moves downward, the air inlet gas path is broken.

[0032] Please refer to Figure 7 , the ejector rod assembly 30 includes an ejector rod seat 33, an ejector rod 34, an ejector rod seat O-ring 35 and a steel sleeve 36, wherein the ejector rod seat 33 is a hollow cylinder with a radial protruding fixed flange 331 on one end surface, and the surface of the ejector rod seat 33 is anodized for protection, the fixed flange 331 of the ejector rod seat 33 is connected to the valve body 11 by screw locking, the inner edge surface of the hollow cylinder of the ejector rod seat 33 includes a two-step radial inward step part 332, the ejector rod seat O-ring 35 and the steel sleeve 36 are sequentially arranged in the hollow cylinder of the ejector rod seat 33 and abut against the two-step radial inward step part 332 in sequence, as Figure 7As shown, the top rod seat O-ring 35 is below the steel sleeve 36, and the top rod seat O-ring 35 and the steel sleeve 36 abut a step connected to the second step portion 332, respectively. After assembly, the outer edge surface of the steel sleeve 36 is in interference fit with the inner edge surface of the cylinder of the top rod seat 33 to limit the position of the top rod seat O-ring 35, which is used to prevent air leakage from the upper valve rod containing space 29. The end of the top rod 34 towards the upper valve rod 26 includes a top rod flange 341, which has a larger diameter than the second step portion 332. After assembly, when the top rod 34 is pushed upwards by the upper valve rod 26, it can be limited by the second step portion 332 so as not to be pushed out of the top rod seat 33. The top rod 34 penetrates the top rod seat O-ring 35 and the steel sleeve 36, and the two end surfaces of the top rod flange 341 are connected to the bottom surface of the second step portion 332 and the end surface of the upper valve rod 26, respectively. The top rod 34 is used to press down the upper valve rod 26 to close the first air inlet 1 so that air flows into the upper valve rod containing space 29.

[0033] Please refer to Figure 1 and Figure 4 The valve body 11 is provided with a third air inlet 4 corresponding to the position of the piston 17 for driving the piston 17 to change the working port through which air flows, that is, the third air inlet 4 is a control port. The valve body 11 is also provided with a first working port 21, a second working port 22, a first exhaust port 31 and a second exhaust port 32, which are respectively connected to the valve rod cavity. In addition, the first exhaust port 31 and the second exhaust port 32 are connected to the exhaust cap 51 and the exhaust gasket 52 at the opening.

[0034] As described above, the mechanical stop valve and the air control reversing valve are combined into one integrated valve, and an air passage is provided to assist the return spring 16 in driving the valve rod 141. The working principle of the integrated valve of the present application is as follows:

[0035] I. When the top rod 34 is in the extended state (not stopped), the third air inlet 4 is ventilated, the valve rod 141 is located on the right side, the first air inlet 1 is communicated with the first working port 21, and the second exhaust port 32 is exhausted.

[0036] The third air inlet 4 is not ventilated, the valve rod 141 is jointly driven by the spring force of the return spring 16 and the air pressure of the reset air passage 1411 to move from the right side to the left side, the first air inlet 1 is communicated with the second working port 22, and the first exhaust port 31 is exhausted.

[0037] The third air inlet 4 is not ventilated, the valve rod 141 is jointly driven by the spring force of the return spring 16 and the air pressure of the reset air passage 1411 to move from the right side to the left side, the first air inlet 1 is communicated with the second working port 22, and the first exhaust port 31 is exhausted.

[0038] II. When the top rod 34 is in the pressed state (off), the first working port 21 and the second working port 22 are both without gas no matter the third air inlet 4 is ventilated or not.

[0039] It should be noted that in the description of the embodiments of the present application, the terms "front, rear, left, right, upper, lower" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are merely for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. The terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0040] Due to the adoption of the above technical features, the utility model has the following advantages and positive effects compared with the prior art:

[0041] First, the integrated valve of the present application can not only ensure the normal control of the gas path on-off function, but also can rely on the spring reset to realize the pneumatic, so that the performance of the spring is more reliable and the service life is longer.

[0042] The above disclosure is only the preferred embodiment of the utility model, but not to limit itself, any skilled person in the art without departing from the spirit and connotation of the utility model, the equivalent changes and changes made, should fall within the scope of protection of the utility model.

Claims

1. A gas reset integrated valve characterized by, The integrated valve comprises a valve body assembly, a top rod assembly and an upper valve rod assembly, the top rod assembly is arranged on the valve body assembly, the top rod assembly and the valve body assembly form an upper valve rod accommodating space, the upper valve rod assembly is arranged in the upper valve rod accommodating space, the valve body assembly comprises a valve body with a valve rod cavity, a rear cover and a valve seat arranged at both sides of the valve rod cavity opening, a valve rod assembly arranged in the valve rod cavity, a rear cover O-ring and a return spring, wherein, The valve rod assembly comprises a valve rod, five sealing rings sleeved on the valve rod, an end of the valve rod towards the rear cover is provided with a spring groove for accommodating the return spring, both ends of the return spring are respectively abutted against the bottom surface connected with the spring groove and the rear cover; The upper valve rod accommodating space is connected with the valve rod cavity in gas path, the bottom surface of the spring groove is provided with a reset gas path connecting the upper valve rod accommodating space through the valve rod; The opening end surface of the valve rod cavity and the outer surface of the rear cover connected with each other are provided with an annular air-tight groove, the rear cover O-ring is arranged in the annular air-tight groove to prevent gas leakage from the valve rod cavity and the surface connected with the rear cover.

2. The gas reset integrated valve of claim 1, wherein, The valve body assembly further comprises a piston and a piston V-ring, which are arranged in the valve seat.

3. The gas reset integrated valve of claim 1, wherein, The valve body is provided with a first gas inlet connected with the upper valve rod accommodating space in gas path, and the upper valve rod assembly is used to open and close the gas flow of the first gas inlet.

4. The gas reset integrated valve of claim 3, wherein, The upper valve rod assembly comprises a spring, a lower stopper, a middle separation sleeve, two upper valve rod O-rings, an upper stopper and an upper valve rod, wherein, An end of the upper valve rod towards the valve rod cavity is provided with a spring groove, the other end of the upper valve rod is connected with the top rod assembly, one end of the spring is arranged in the spring groove, the other end of the spring is connected with the bottom surface of the upper valve rod accommodating space; the lower stopper, the upper valve rod O-rings, the middle separation sleeve, the upper valve rod O-rings, the upper stopper are sequentially arranged in the upper valve rod accommodating space, the air hole of the middle separation sleeve corresponds to the position of the first gas inlet for gas circulation; the upper stopper is a hollow cylinder with a radial protruding fixing part on one end surface, two surfaces of the fixing part are respectively connected with the valve body and the top rod assembly; the upper valve rod sequentially penetrates the lower stopper, the upper valve rod O-rings, the middle separation sleeve, the upper valve rod O-rings and the upper stopper, and the upper valve rod is provided with a gas inlet path.

5. The gas reset integrated valve of claim 4, wherein, The top rod assembly comprises a top rod seat, a top rod, a top rod seat O-ring and a steel sleeve, wherein the top rod seat is a hollow cylinder with a radial protruding fixing flange on one end surface, the fixing flange of the top rod seat is connected with the valve body through a screw lock, the inner edge surface of the hollow cylinder of the top rod seat comprises a two-step radial inward step part, the top rod seat O-ring and the steel sleeve are sequentially arranged in the hollow cylinder of the top rod seat and sequentially abut against the two-step step part; one end of the top rod towards the upper valve rod comprises a top rod flange, the diameter of the top rod flange is greater than the diameter of the two-step step part, the top rod penetrates the top rod seat O-ring and the steel sleeve, and two end surfaces of the top rod flange are respectively connected with the bottom surface of the two-step step part and the end surface of the upper valve rod.

6. The gas reset integrated valve of claim 2, wherein, The valve body corresponds to the position of the piston to open a third air inlet; the valve body also opens a first working port, a second working port, a first exhaust port and a second exhaust port, which are respectively connected to the valve rod cavity.

7. The gas reset integrated valve of claim 6, wherein, The first exhaust port and the second exhaust port are connected with an exhaust cap and an exhaust gasket at the opening.

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