High-performance hydro-pneumatic spring

Abstract

The utility model belongs to the technical field of hydro-pneumatic springs, and particularly relates to a high-performance hydro-pneumatic spring which comprises a cylinder body and a push rod, a reset spring is fixedly installed above the cylinder body, a top plate is fixedly installed above the reset spring, the push rod is fixedly installed at the bottom of the top plate, a shell is fixedly installed on the outer side of the cylinder body, and fins are arranged in the shell. A filter screen is arranged on the shell, and an air conveying pipe is fixedly connected to the filter screen. According to the hydro-pneumatic spring, the fins are installed to reduce the temperature in the hydro-pneumatic spring, when the hydro-pneumatic spring moves to generate heat, the heat can be conducted to the cylinder body, then the temperature on the cylinder body can be conducted to the fins, and the fins can better make contact with air to dissipate heat. And finally, the hot air after heat dissipation can be sucked out by the draft fan through the air conveying opening, the fin radiator and the draft fan are matched with each other, the heat can be effectively taken away, the aging speed of a sealing piece can be slowed down, and deterioration of internal oil liquid and thermal fatigue of metal parts are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil gas spring technical field, concretely is a kind of high-performance oil gas spring. BACKGROUND

[0002] With the continuous progress of automobile industry, especially the gradual improvement of the performance requirements of off-road vehicles and heavy transport vehicles, the traditional suspension system gradually exposes some limitations when facing complex road conditions and heavy load conditions, and high-performance oil gas spring can adaptively adjust the stiffness and damping of suspension according to different road load conditions, so that the vehicle can maintain good driving posture whether in empty or full load state.

[0003] Patent document CN109611493B discloses an oil gas spring damping adjusting device, which comprises a working cylinder and a pilot proportional pressure relief valve, and a piston is arranged in the working cylinder, and the piston divides the working cylinder into a rod cavity and a rodless cavity. The purpose of the present application is to solve the problem that the oil gas spring can only adjust the height and cannot adjust the damping, which leads to poor driving comfort of the vehicle using the oil gas spring. A damping adjusting device for oil gas spring is proposed to realize the function of adjusting the restoring damping of the oil gas spring. Thus, the smoothness of the vehicle is improved, and the comfort and off-road performance of the vehicle are improved. However, the oil gas spring damping adjusting device disclosed in the above-mentioned document mainly considers improving the smoothness of the vehicle and improving the comfort and off-road performance of the vehicle, without considering the problem that when the wheels of the engineering vehicle move up and down frequently, the oil gas spring starts to move, which generates a large amount of heat and accelerates the aging of the internal metal parts, which also leads to the problem of poor damping effect of the oil gas spring. Therefore, it is necessary to develop a high-performance oil gas spring, which can effectively take away the heat and keep the oil gas spring within a suitable working temperature range, and also slow down the aging speed of the sealing element and reduce the deterioration of the internal oil and the thermal fatigue of the metal parts. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of high-performance oil gas spring to solve the technical problem of reducing the temperature in the oil gas spring in the above background technology.

[0005] In order to achieve the above object, the utility model provides the following technical scheme: A high performance oil gas spring, including cylinder and push rod, the cylinder top fixedly installed with reset spring, the reset spring top fixedly installed with roof, the roof bottom fixedly installed with push rod, and push rod installs in the inside of reset spring, the cylinder outside fixedly installed with shell, the shell inside is provided with fin, and the fin is fixedly connected with the cylinder, be provided with filter screen on the shell, the filter screen is fixedly connected with the air delivery pipe, and the air delivery pipe is inserted in the shell, the inside one end of air delivery pipe is fixedly installed with support plate, the support plate top fixedly installed with motor, the motor output is provided with fan blade, the shell outside fixedly installed with fan box, and air delivery pipe runs through the inside of fan box.

[0006] Preferably, the push rod is inserted into the cylinder, the push rod is provided with an oil seal, the oil seal is provided with a sealing ring, the oil seal is provided with a support, the support is provided with a sealing ring spring, and the sealing ring spring is provided with a plurality of.

[0007] Preferably, the push rod is provided with a piston, and the piston is provided with an air chamber.

[0008] Preferably, the piston is provided with an oil chamber on both sides, and the oil chamber is installed at the bottom of the oil seal.

[0009] Preferably, the roof is provided with a mounting buckle, and the fan box is provided with a power supply device.

[0010] Preferably, the shell is provided with a plurality of air holes.

[0011] Preferably, the cylinder is provided with a bottom valve.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] 1. The utility model discloses a fin is installed to reduce the temperature in the oil gas spring, when the oil gas spring moves and generates heat, the heat is conducted on the cylinder, then the temperature on the cylinder is conducted on the fin, the fin can better contact with air to radiate heat, and finally the hot air after radiating heat is sucked out by the exhaust fan, the fin radiator and the exhaust fan cooperate with each other, which can not only effectively take away the heat, make the oil gas spring keep in the proper working temperature range, but also slow down the aging speed of the sealing element, reduce the metamorphosis of internal oil and the thermal fatigue of metal parts.

[0014] 2. The utility model discloses a prevent oil leakage from installing oil seal, when oil gas spring starts to work, the sealing ring on the oil seal can effectively prevent oil leakage to the outside, can also prevent the dust impurity of outside from entering inside and causing damage to inside, the spring on the support of oil seal can prevent frequently change rotating direction and speed in the process of vehicle driving, when sealing lip deforms, the sealing ring spring on the internal support can help sealing lip restore to the shape of original fast, strengthened the elastic recovery ability of oil seal. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is whole structure schematic diagram of the utility model;

[0016] Figure 2 It is internal structure schematic diagram of the utility model;

[0017] Figure 3 It is heat radiation structure schematic diagram of the utility model;

[0018] Figure 4 It is oil seal structure schematic diagram of the utility model.

[0019] In the drawing: 1, cylinder body;2, push rod;3, reset spring;4, installation buckle;5, fan box;6, top plate;7, shell;8, piston;9, oil seal;10, oil chamber;11, bottom valve;12, air chamber;13, air hole;14, power supply device;15, fin;16, wind pipe;17, motor;18, fan blade;19, sealing ring;20, sealing ring spring;21, support;22, support plate;23, filter screen. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0021] Please refer to Figures 1-4The utility model provides a high -performance oil gas spring, including cylinder 1 and push rod 2, the reset spring 3 is fixedly installed above the cylinder 1, the top plate 6 is fixedly installed above the reset spring 3, the push rod 2 is fixedly installed at the bottom of top plate 6, and push rod 2 is installed in the inside of reset spring 3, the casing 7 is fixedly installed outside the cylinder 1, the fin 15 is arranged in the inside of casing 7, and the fin 15 is fixedly connected with cylinder 1, the filter screen 23 is arranged on the casing 7, the air delivery pipe 16 is fixedly connected on the filter screen 23, and air delivery pipe 16 is inserted in the inside of casing 7, the support plate 22 is fixedly installed in the inside one end of air delivery pipe 16, the motor 17 is fixedly installed above the support plate 22, the fan blade 18 is arranged on the output end of motor 17, the fan box 5 is fixedly installed outside the casing 7, and air delivery pipe 16 penetrates the inside of fan box 5, first, when the wheel of engineering vehicle encounters the convex road surface or the vehicle carries heavy goods in the process of driving, the upward movement of wheel is passed to oil gas spring through suspension system, and oil gas spring is compressed.In the initial compression, the piston 8 moves downward in the cylinder, first extruding oil liquid.Because oil liquid is almost incompressible, oil liquid will flow to gas chamber 12 through the inside channel, and the flow of oil liquid will be hindered by the damping structure in the process of flowing to gas chamber, and damping force is generated, which will consume part of the energy brought by external force and convert it into heat energy, and high -performance oil gas spring is gradually widely used as a damping device in engineering vehicle, and engineering vehicle is various in kind and use, and high -performance oil gas spring has good compatibility and can be applied to various engineering vehicles of different purposes, and high -performance oil gas spring can provide more accurate support force according to the specific load and driving condition of vehicle, but when the wheel of engineering vehicle moves up and down frequently, oil gas spring starts to move, and a large amount of heat is generated, which accelerates the aging of internal metal parts, so as to cause the damping effect of oil gas spring to be poor, when oil gas spring needs to be cooled, the fin 15 is installed to reduce the temperature in oil gas spring, when heat is generated when oil gas spring moves, heat is conducted on the cylinder 1, then the temperature on the cylinder 1 is conducted on the fin 15, the fin 15 can better contact air to radiate heat, and finally the hot air after radiating is sucked out by the exhaust fan, and the fin 15 radiator and the exhaust fan cooperate, which can not only effectively take away the heat, make oil gas spring keep in the appropriate working temperature range, but also slow down the aging speed of sealing element, reduce the metamorphism of internal oil liquid and the thermal fatigue of metal parts.

[0022] Please refer to Figure 2 and Figure 4The push rod 2 is inserted into the cylinder body 1, the oil seal 9 is installed outside the push rod 2, the sealing ring 19 is fixedly installed outside the oil seal 9, the bracket 21 is fixedly installed inside the oil seal 9, the sealing ring spring 20 is fixedly installed on the bracket 21, and a plurality of sealing ring springs 20 are arranged, the oil seal 9 is installed to prevent oil leakage, when the oil gas spring starts to work, the sealing ring 19 on the oil seal 9 can effectively prevent oil leakage to the outside, and can also prevent dust and impurities from the outside from entering the inside and causing damage to the inside, the spring on the bracket 21 in the oil seal 9 can prevent the vehicle from frequently changing the rotation direction and speed during driving, when the oil seal 9 is deformed, the sealing ring spring 20 on the inside bracket 21 can help the oil seal 9 quickly recover to the original shape, and the elastic recovery ability of the oil seal 9 is enhanced.

[0023] Please refer to Figure 2 and Figure 3 The oil chamber 10 is arranged on both sides of the piston 8 and is installed at the bottom of the oil seal 9, and the oil chamber 10 is used to store oil to prevent oil leakage, the mounting buckle 4 is fixedly installed above the top plate 6, the mounting buckle 4 is used to connect the oil gas spring with the engineering vehicle, the bottom valve 11 is fixedly installed at the inner bottom end of the cylinder body 1, and the bottom valve 11 is used to limit the flow of oil through the throttling channel, the air holes 13 are arranged on the outside of the shell 7, and a plurality of air holes 13 are arranged, the air holes 13 are used to circulate the air in the shell 7 to prevent the generated hot air from accumulating in the shell 7, and the power supply device 14 is fixedly installed above the fan box 5, and the power supply device 14 is used to conveniently supply power to the motor 17.

[0024] The working principle is that the fins 15 are installed to reduce the temperature in the oil gas spring, when the oil gas spring moves to generate heat, the heat is conducted on the cylinder body 1, and then the temperature on the cylinder body 1 is conducted on the fins 15, the fins 15 can better contact the air to dissipate heat, and finally the hot air after heat dissipation is sucked out by the exhaust fan through the air outlet, the fins 15 and the exhaust fan cooperate with each other not only to effectively take away the heat, so that the oil gas spring is kept within a suitable working temperature range, but also to slow down the aging speed of the sealing element, reduce the deterioration of the internal oil and the thermal fatigue of the metal parts, the oil seal 9 is installed to prevent oil leakage, when the oil gas spring starts to work, the sealing ring 19 on the oil seal 9 can effectively prevent oil leakage to the outside, and can also prevent dust and impurities from the outside from entering the inside and causing damage to the inside, the spring on the bracket 21 in the oil seal 9 can prevent the vehicle from frequently changing the rotation direction and speed during driving, when the sealing ring spring 20 on the inside bracket 21 can help the sealing ring 20 quickly recover to the original shape, and the elastic recovery ability of the oil seal 9 is enhanced.

[0025] It is apparent for a person skilled in the art that the present application is not restricted to the details of the above exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary only, and not limiting, the scope of the present application being defined by the appended claims rather than the above description, and all changes coming within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims concerned.

Claims

1. A high-performance hydropneumatic spring, comprising a cylinder (1) and a push rod (2), wherein a return spring (3) is fixedly mounted on the top of the cylinder (1), a top plate (6) is fixedly mounted on the top of the return spring (3), and a push rod (2) is fixedly mounted on the bottom of the top plate (6), and the push rod (2) is installed inside the return spring (3), characterized in that: A housing (7) is fixedly installed on the outside of the cylinder (1). A fin (15) is provided inside the housing (7), and the fin (15) is fixedly connected to the cylinder (1). A filter screen (23) is provided on the housing (7), and an air supply pipe (16) is fixedly connected to the filter screen (23). The air supply pipe (16) is inserted inside the housing (7). A support plate (22) is fixedly installed at one end of the air supply pipe (16). A motor (17) is fixedly installed above the support plate (22). A fan blade (18) is provided at the output end of the motor (17). A fan box (5) is fixedly installed on the outside of the housing (7), and the air supply pipe (16) passes through the inside of the fan box (5).

2. The high-performance gas spring according to claim 1, characterized in that: The push rod (2) is inserted inside the cylinder body (1). An oil seal (9) is installed on the outside of the push rod (2). A sealing ring (19) is fixedly installed on the outside of the oil seal (9). A bracket (21) is fixedly installed inside the oil seal (9). A sealing ring spring (20) is fixedly installed on the bracket (21), and multiple sealing ring springs (20) are provided.

3. The high-performance gas spring according to claim 1, characterized in that: A piston (8) is fixedly installed at the bottom of the push rod (2), and an air chamber (12) is provided below the piston (8).

4. A high-performance gas spring according to claim 3, characterized in that: Oil chambers (10) are provided on both sides of the piston (8), and the oil chambers (10) are installed at the bottom of the oil seal (9).

5. A high-performance gas spring according to claim 1, characterized in that: An mounting buckle (4) is fixedly installed above the top plate (6), and a power supply device (14) is fixedly installed above the fan box (5).

6. A high-performance gas spring according to claim 1, characterized in that: The outer side of the housing (7) is provided with a ventilation hole (13), and there are multiple ventilation holes (13).

7. A high-performance gas spring according to claim 1, characterized in that: A bottom valve (11) is fixedly installed at the inner bottom end of the cylinder (1).

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