Oil pipe assembly of hydraulic suspension system

Abstract

The invention discloses an oil pipe assembly of a hydraulic suspension system. The oil pipe assembly comprises an oil pump; the energy accumulator is connected to one end of the oil pump through an oil pipe assembly, and one end of the energy accumulator is connected with a rigidity module for adjusting a switch of the energy accumulator; the at least two first shock absorber joints are connected with a front wheel suspension of the automobile and are mounted at one end of the energy accumulator through another oil pipe assembly so as to convey oil to a suspension shock absorber; the posture control valve is arranged on one side of the oil pump and communicates with the oil pump through a pipeline to distribute oil; the second shock absorber joint is connected to a rear wheel suspension of the automobile; by arranging the independent oil pump, the rigidity module and the energy accumulator, active driving of oil liquid movement is facilitated, so that active damping is achieved, the damping rigidity effect is adjusted according to the road bumping degree, the damping effect is well guaranteed, and when the oil liquid is conveyed, through the connecting piece, the red copper base and the hollow bolt, the damping effect is greatly improved. And stable conveying of high-pressure oil can be well guaranteed, and the practicability of the device is improved.

Description

Technical Field

[0001] The invention particularly relates to an oil pipe assembly of a hydraulic suspension system. Background Art

[0002] Automobile suspension is a system used to support the vehicle body and connect to the wheels. Its main purpose is to improve driving stability, comfort and handling performance. Its main function is to absorb the impact force caused by the unevenness of the wheels and the road surface to keep the vehicle body stable. The springs used for shock absorption are mainly air springs, metal springs or hydraulic springs. Hydraulic springs are passive shock absorbers. When external force acts on the hydraulic spring, the piston moves in the hydraulic cylinder and compresses the hydraulic oil. The hydraulic oil flows through valves or small holes to generate damping force, thereby absorbing and dissipating energy.

[0003] In the existing hydraulic spring shock absorption, passive vibration absorption can only be achieved under the action of external force, and cannot pre-adjust its own hardness and softness according to the degree of ground bumpiness, so as to achieve different degrees of shock absorption effect. In addition, the oil pressure of the oil pipe of the traditional hydraulic spring shock absorption is relatively low, and the oil pipe joints are mostly sealed by rubber pads. If it is used for active vibration absorption, the higher pressure oil will cause pipeline failure, resulting in oil leakage from the pipeline connection, which is not convenient for ensuring the stability of the oil pipe connection. For this reason, we propose an oil pipe assembly of a hydraulic suspension system. Summary of the invention

[0004] The object of the present invention is to provide an oil pipe assembly for a hydraulic suspension system to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: an oil pipe assembly of a hydraulic suspension system, comprising:

[0006] Oil pump;

[0007] An accumulator is connected to one end of the oil pump through an oil pipe assembly, and one end of the accumulator is connected to a stiffness module for adjusting its switch;

[0008] At least two first shock absorber connectors are connected to the front wheel suspension of the vehicle, and are installed at one end of the accumulator through another oil pipe assembly to transport oil to the suspension shock absorber;

[0009] An attitude control valve is arranged on one side of the oil pump and is connected to the oil pump through a pipeline to distribute oil;

[0010] The second shock absorber joint connected to the rear wheel suspension of the automobile is internally communicated with another accumulator through a pipeline.

[0011] Preferably, the oil pipe assembly includes a hose, a connector and a hard pipe, both ends of the hose are respectively connected to hard pipes for transporting oil, and one end of the hard pipe has a connector that cooperates with the hose, and the other end of the hard pipe is connected to the first shock absorber joint.

[0012] Preferably, the connecting piece includes a connecting tube, a sleeve and a connecting cavity, one end of the connecting tube is riveted and fixed to the hard tube, a sleeve is sleeved on the outside of the connecting tube, and a connecting cavity is formed between the sleeve and the connecting tube, and the inner wall of the connecting cavity and the sleeve have protrusions for pressing the hose corresponding to each other.

[0013] Preferably, the hose is a double-layer steel wire braided high-pressure hose.

[0014] Preferably, the oil pipe assembly includes a tee joint, a mounting plate, a through-hole bolt, a copper seat and a hollow bolt. The outer surface of the tee joint is provided with a plurality of hard pipes connected with its interior. A through-hole bolt is fixed at one end of the hard pipe, and a copper seat for sealing is provided on the inner side of the through-hole bolt. Another end of the hard pipe has a hollow bolt connected to an external pipeline, and a mounting plate connected to a vehicle body is fixed to one side wall of the tee joint.

[0015] Preferably, the copper seat is made of copper, and one end of the copper seat expands outward to form a bell mouth.

[0016] Preferably, the hollow bolt includes a connecting head, a threaded rod, a connecting hole and a hollow cavity. The connecting head is fixed to one end of another rigid tube, and a threaded rod is rotatably installed on the inner side of the connecting head. The lower end of the outer surface of the threaded rod is provided with an external thread that cooperates with an external pipeline. A hollow cavity is provided at the lower end of the inner side of the threaded rod, and a connecting hole that is connected to the other rigid tube is provided through the inner wall of the hollow cavity.

[0017] Preferably, a mounting piece that cooperates with an external vehicle body is detachably connected to the outer surface of the rigid tube.

[0018] Preferably, the mounting member includes a first clamping plate, a limiting groove, a soft pad, a second clamping plate and a clamping bolt, the first clamping plate has a rubber sleeve at one end of the inner side, the first clamping plate is connected to the second clamping plate on one side by a clamping bolt, and a limiting groove that cooperates with the hard pipe is formed between the first clamping plate and the second clamping plate, and the limiting groove has a soft pad on the inner side.

[0019] Preferably, a plurality of the stiffness modules and the energy accumulators are provided.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention is equipped with an independent oil pump, a stiffness module and an accumulator, so as to facilitate active driving of oil movement, thereby realizing active shock absorption, avoiding the inconvenience of traditional energy storage, realizing active shock absorption according to the actual movement trajectory of the vehicle body, and adjusting the stiffness effect of shock absorption according to the degree of road bumps. The present invention well guarantees the shock absorption effect, and during oil transportation, the connecting piece, the copper seat and the hollow bolt can well ensure the stable transportation of high-pressure oil and avoid oil leakage in the oil pipe. The oil pipe in the present invention is easy to connect and has good firmness after connection, which increases the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 It is a schematic diagram of the connection structure between the hose and the hard pipe of the present invention;

[0024] Figure 3 It is a schematic diagram of the cross-sectional structure of the connecting piece of the present invention;

[0025] Figure 4 It is a schematic diagram of the installation structure of the three-way joint of the present invention;

[0026] Figure 5 It is a schematic diagram of the cross-sectional structure of the copper seat of the present invention;

[0027] Figure 6 It is a schematic diagram of the cross-sectional structure of the hollow bolt of the present invention;

[0028] Figure 7 It is a schematic diagram of the structure of the oil pipe assembly mounting part of the present invention;

[0029] Figure 8 It is a schematic diagram of the exploded structure of the mounting piece of the present invention;

[0030] Fig. 9 It is a schematic diagram of the structure of the joints at both ends of the hard pipe of the present invention.

[0031] In the figure: 1. oil pump; 2. stiffness module; 3. accumulator; 4. first shock absorber joint; 5. attitude control valve; 6. second shock absorber joint; 7. hose; 8. connector; 801. connecting pipe; 802. sleeve; 803. connecting cavity; 9. hard pipe; 10. three-way connector; 11. mounting plate; 12. through-hole bolt; 13. copper seat; 131. bell mouth; 14. hollow bolt; 141. connector; 142. threaded rod; 143. connecting hole; 144. hollow cavity; 15. mounting part; 151. first clamping plate; 152. limit groove; 153. cushion; 154. second clamping plate; 155. clamping bolt. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] See also Figure 1-Figure 9 The present invention provides a technical solution: an oil pipe assembly of a hydraulic suspension system, comprising:

[0034] Oil pump 1;

[0035] The accumulator 3 is connected to one end of the oil pump 1 through an oil pipe assembly, and one end of the accumulator 3 is connected to a stiffness module 2 for adjusting its switch. The accumulator 3 is an energy storage device that converts the hydraulic energy of the pressure liquid into potential energy and stores it. When the system needs it, the potential energy is converted into hydraulic energy to do work. It plays an elastic role and is convenient for active elastic adjustment to actively adapt to different degrees of bumpiness on the ground. At the same time, the switches of each accumulator 3 can be controlled by the stiffness module 2 in the later stage to realize the conduction of the oil and adjust the height of the entire suspension;

[0036] At least two first shock absorber connectors 4 are connected to the front wheel suspension of the vehicle, and are installed at one end of the accumulator 3 through another oil pipe assembly to transport oil to the suspension shock absorber;

[0037] The attitude control valve 5 is arranged on one side of the oil pump 1 and is connected to the oil pump 1 through a pipeline to distribute oil, so as to facilitate the regulation of various oil circuits during vibration reduction. When the hydraulic pressure of any shock absorber changes to adapt to the driving conditions, the pressure of each wheel can be flexibly distributed through the oil circuit driving piston to realize the four-wheel cross-connection function to stabilize the overall attitude of the vehicle;

[0038] The second shock absorber joint 6 connected to the rear wheel suspension of the automobile is internally connected to another accumulator 3 through a pipeline, so as to better transport oil to the rear wheel shock absorber.

[0039] Preferably, the oil pipe assembly includes a hose 7, a connector 8 and a hard pipe 9, both ends of the hose 7 are respectively connected to the hard pipe 9 for transporting oil, and one end of the hard pipe 9 has a connector 8 that cooperates with the hose 7, and the other end of the hard pipe 9 is connected to the first shock absorber joint 4, so that the hose 7 and the hard pipe 9 can be quickly connected to realize the transportation of oil.

[0040] Preferably, the connecting piece 8 includes a connecting tube 801, a sleeve 802 and a connecting cavity 803. One end of the connecting tube 801 is riveted and fixed to the hard tube 9. A sleeve 802 is sleeved on the outside of the connecting tube 801. A connecting cavity 803 is formed between the sleeve 802 and the connecting tube 801. The inner wall of the connecting cavity 803 and the sleeve 802 have protrusions for pressing the hose 7, corresponding to the protrusions for pressing the hose 7, so as to quickly press the hose 7 to one end of the connecting piece 8.

[0041] Preferably, the hose 7 is a double-layer steel wire braided high-pressure hose, which improves the compressive strength.

[0042] Preferably, the oil pipe assembly includes a tee joint 10, a mounting plate 11, a through-hole bolt 12, a copper seat 13 and a hollow bolt 14. The outer surface of the tee joint 10 is provided with a plurality of hard pipes 9 connected to the interior thereof, a through-hole bolt 12 is fixed at one end of the hard pipe 9, a copper seat 13 for sealing is provided on the inner side of the through-hole bolt 12, one end of the other hard pipe 9 has a hollow bolt 14 connected to an external pipeline, and a mounting plate 11 connected to the vehicle body is fixed to one side wall of the tee joint 10, so that when the two hard pipes 9 are connected, sealing is achieved through the deformation of the copper seat 13, avoiding the traditional sealing through rubber pads, where the rubber pads are greatly deformed and there is a risk of oil leakage when the hard pipes 9 transport high-pressure oil, thereby improving the stable sealing effect after the oil pipes are connected.

[0043] Preferably, the copper seat 13 is made of copper, and one end of the copper seat 13 expands outward to form a bell mouth 131, which is convenient for better docking of the two hard tubes 9, so that the copper seat 13 of the other hard tube 9 and the bell mouth 131 are squeezed and sealed.

[0044] Preferably, the hollow bolt 14 includes a connecting head 141, a threaded rod 142, a connecting hole 143 and a hollow cavity 144. The connecting head 141 is fixed to one end of another rigid tube 9, and a threaded rod 142 is rotatably installed on the inner side of the connecting head 141. The lower end of the outer surface of the threaded rod 142 is provided with an external thread that cooperates with an external pipeline. A hollow cavity 144 is provided at the lower end of the inner side of the threaded rod 142, and a connecting hole 143 connected to another rigid tube 9 is penetrated through the inner wall of the hollow cavity 144, which is convenient for quickly connecting with an external valve body through the threaded rod 142, and the threaded rod 142 has a hollow cavity 144 and a connecting hole 143 to ensure stable conduction of oil.

[0045] Preferably, a mounting piece 15 that cooperates with the external vehicle body is detachably connected to the outer surface of the hard tube 9 .

[0046] Preferably, the mounting member 15 includes a first clamping plate 151, a limiting groove 152, a soft pad 153, a second clamping plate 154 and a clamping bolt 155. The first clamping plate 151 has a rubber sleeve at one end on the inner side. One side of the first clamping plate 151 is connected to the second clamping plate 154 through a clamping bolt 155. A limiting groove 152 that cooperates with the hard pipe 9 is formed between the first clamping plate 151 and the second clamping plate 154. The limiting groove 152 has a soft pad 153 on the inner side, which is convenient for achieving shock absorption through the soft pad 153 when the oil pipe is installed on the vehicle body, so as to reduce the vibration of the vehicle body from being directly transmitted to the hard pipe 9.

[0047] Preferably, multiple stiffness modules 2 and multiple energy accumulators 3 are provided to facilitate achieving better active vibration reduction effect.

[0048] The working principle and use process of the present invention: the present invention is equipped with an independent hydraulic pump. Compared with the air spring, since the active hydraulic shock absorber is filled with hydraulic oil, as a liquid, its compressibility is very small, so only a small amount of filling and discharging is needed to realize the expansion and contraction of the shock absorber. Not only is the response speed much faster, but the self-strength is also much higher, and the lifting capacity reaches 5 tons. The hose 7 and the hard pipe 9 in the oil pipe assembly are connected by a connector 8. During processing, the sleeve 802 can be pressed to quickly clamp the hose 7, so that the hose 7 is fixed to one end of the connector 8, and the other end of the connector 8 The end is connected with the hard pipe 9 by interference fit, which is easy to operate. Due to the high pressure of the oil during shock absorption, the deformation of the sealing gasket is avoided to cause oil leakage. A metal copper seat 13 is adopted. The copper seat 13 has a bell mouth 131 at one end, which can be well matched with the copper seat at the end of the other oil pipe to achieve sealing when the pipeline is connected, improve the sealing hardness, and reduce the deformation caused by the high pressure of the oil. In addition, the hollow bolt 14 adopts a hollow design, which is convenient for threading the threaded rod 142 in the hollow bolt 14 with another valve body or pipeline to achieve quick connection, and can guide the oil, and the connection is convenient.

[0049] 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. An oil pipe assembly of a hydraulic suspension system, characterized in that: include: Oil pump (1); An accumulator (3) is connected to one end of the oil pump (1) via an oil pipe assembly, and one end of the accumulator (3) is connected to a stiffness module (2) for adjusting its switch; At least two first shock absorber joints (4) are connected to the front wheel suspension of the vehicle and are installed at one end of the accumulator (3) through another oil pipe assembly to transport oil to the suspension shock absorber; A posture control valve (5) is arranged on one side of the oil pump (1) and is connected to the oil pump (1) through a pipeline to distribute oil; A second shock absorber joint (6) connected to the rear wheel suspension of the automobile is internally connected to another accumulator (3) through a pipeline.

2. The oil pipe assembly of a hydraulic suspension system according to claim 1, characterized in that: The oil pipe assembly comprises a hose (7), a connector (8) and a hard pipe (9), wherein both ends of the hose (7) are respectively connected to hard pipes (9) for transporting oil, and one end of the hard pipe (9) has a connector (8) that matches the hose (7), and the other end of the hard pipe (9) is connected to a first shock absorber joint (4).

3. The oil pipe assembly of a hydraulic suspension system according to claim 2, characterized in that: The connecting piece (8) comprises a connecting pipe (801), a sleeve (802) and a connecting cavity (803); one end of the connecting pipe (801) is riveted and fixed to the hard pipe (9); a sleeve (802) is sleeved on the outside of the connecting pipe (801); a connecting cavity (803) is formed between the sleeve (802) and the connecting pipe (801); the inner wall of the connecting cavity (803) and the sleeve (802) have protrusions for pressing the hose (7) correspondingly.

4. The oil pipe assembly of a hydraulic suspension system according to claim 2, characterized in that: The hose (7) is a double-layer steel wire braided high-pressure hose.

5. The oil pipe assembly of a hydraulic suspension system according to claim 1, characterized in that: The oil pipe assembly comprises a three-way joint (10), a mounting plate (11), a through-hole bolt (12), a copper seat (13) and a hollow bolt (14); the outer surface of the three-way joint (10) is provided with a plurality of hard pipes (9) connected to the inside thereof; one end of the hard pipe (9) is fixed with a through-hole bolt (12); the inner side of the through-hole bolt (12) is provided with a copper seat (13) for sealing; one end of another hard pipe (9) is provided with a hollow bolt (14) connected to an external pipeline; and a mounting plate (11) connected to a vehicle body is fixed to one side wall of the three-way joint (10).

6. The oil pipe assembly of a hydraulic suspension system according to claim 5, characterized in that: The copper seat (13) is made of copper, and one end of the copper seat (13) is expanded outward to form a bell mouth (131).

7. The oil pipe assembly of a hydraulic suspension system according to claim 5, characterized in that: The hollow bolt (14) comprises a connecting head (141), a threaded rod (142), a connecting hole (143) and a hollow cavity (144); the connecting head (141) is fixed to one end of another rigid tube (9), and a threaded rod (142) is rotatably mounted inside the connecting head (141); an external thread matching an external pipeline is arranged at the lower end of the outer surface of the threaded rod (142); a hollow cavity (144) is provided at the lower end of the inner side of the threaded rod (142), and a connecting hole (143) communicating with another rigid tube (9) is provided through the inner wall of the hollow cavity (144).

8. The oil pipe assembly of a hydraulic suspension system according to claim 2 or 5, characterized in that: The outer surface of the hard tube (9) is detachably connected with a mounting piece (15) that matches with the external vehicle body.

9. The oil pipe assembly of a hydraulic suspension system according to claim 8, characterized in that: The mounting member (15) comprises a first clamping plate (151), a limiting groove (152), a soft pad (153), a second clamping plate (154) and a clamping bolt (155); an inner end of the first clamping plate (151) is provided with a rubber sleeve; one side of the first clamping plate (151) is connected to the second clamping plate (154) via a clamping bolt (155); a limiting groove (152) matching with the hard tube (9) is formed between the first clamping plate (151) and the second clamping plate (154); and a soft pad (153) is provided on the inner side of the limiting groove (152).

10. The oil pipe assembly of a hydraulic suspension system according to claim 1, characterized in that: The stiffness module (2) and the energy accumulator (3) are both provided in plurality.

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