Heavy load type power chassis electro-hydraulic damping device

Abstract

The invention discloses a heavy-load type power chassis electro-hydraulic damping device, relates to the technical field of vehicle suspension systems, and solves the problem that an existing vehicle suspension system only performs damping through a plate spring or a spring or other buffer structures, and the damping effect of a vehicle body is poor due to too fast energy release of the plate spring or the spring. Comprising a main supporting beam, a tire and a buffer assembly, an upper connecting rod and a lower connecting rod which are arranged up and down are arranged between the main supporting beam and the tire, and a damping spring is arranged between the lower connecting rod and the main supporting beam; the buffering assembly comprises a first damper arranged between the lower connecting rod and the bottom of the main supporting beam and an electro-hydraulic controller arranged on the top of the main supporting beam, and the electro-hydraulic controller is connected with the first damper through a first connecting pipe. And hydraulic oil is added into the first damper or extracted from the first damper through the first connecting pipe. Through arrangement of the first damper, energy release of the damping spring is slowed down, and then the damping effect is enhanced.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle suspension systems, in particular to a heavy-load power chassis electro-hydraulic shock absorbing device. Background Art

[0002] The vehicle suspension system is a structure connecting the vehicle chassis and the vehicle tires. By adding a buffer mechanism to the suspension system, the vehicle can obtain a comfortable driving experience when driving on a bumpy road. In the prior art, a Chinese patent with the authorization announcement number CN216153861U discloses a vehicle suspension structure, including a frame connected to the vehicle body, leaf springs are connected to the two sides below the frame, the leaf springs are connected between the vehicle body and the frame, a fixed shaft is connected between the two leaf springs through a connecting piece, a bearing is provided inside the fixed shaft, a rotating shaft is provided inside the bearing, wheels are provided at both ends of the rotating shaft, and a driving motor for driving the rotating shaft to rotate is provided on the fixed shaft. The present invention directly connects the driving motor to the fixed shaft to ensure that the driving end of the driving motor is always connected to the rotating shaft during operation. The above suspension structure uses the elasticity of the leaf spring to achieve a buffering and shock-absorbing effect between the wheel and the vehicle body during use. The defect is that the elastic range of the leaf spring is fixed. Since no energy absorption structure is provided for the leaf spring, when the vehicle encounters a bumpy road during driving, the leaf spring releases energy quickly, resulting in an unsatisfactory shock-absorbing effect on the vehicle body. Summary of the invention

[0003] The purpose of the present invention is to provide a heavy-duty power chassis electro-hydraulic shock absorbing device, which is used to solve the problem that the existing vehicle suspension system only uses buffer structures such as leaf springs or springs for shock absorption, and the vehicle body shock absorption effect is poor due to the excessive release of leaf springs or springs.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a heavy-duty power chassis electro-hydraulic shock absorbing device, including a main support beam, a tire and a buffer assembly, the main support beam is fixedly connected to the vehicle chassis, the tire is provided with a connecting piece, an upper connecting rod and a lower connecting rod are arranged between the connecting piece and the end of the main support beam, one end of the upper connecting rod and the lower connecting rod is hinged to the connecting piece, the other end of the upper connecting rod and the lower connecting rod is hinged to the main support beam, a shock-absorbing spring is provided between the lower connecting rod and the bottom of the main support beam, the buffer assembly includes a first damper arranged between the lower connecting rod and the bottom of the main support beam and an electro-hydraulic controller arranged at the top of the main support beam, the electro-hydraulic controller is connected to the first damper through a first connecting pipe, and hydraulic oil is added to or extracted from the first damper through the first connecting pipe.

[0005] Furthermore, the lower end of the first damper is hinged to the lower connecting rod, and the upper end of the first damper is hinged to the main supporting beam.

[0006] Furthermore, the lower end of the first damper is rotatably connected to the lower connecting rod, and the upper end of the first damper is rotatably connected to the main supporting beam.

[0007] Furthermore, the outer wall of the lower connecting rod has a protrusion, the lower end of the shock absorbing spring is fixedly connected to the protrusion, and the upper end of the shock absorbing spring is fixedly connected to the bottom of the main supporting beam.

[0008] Furthermore, a secondary support beam is fixed on the protrusion, a second damper is provided between the secondary support beam and the main support beam, and the second damper is connected to the electro-hydraulic controller via a second connecting pipe.

[0009] Furthermore, both ends of the upper connecting rod and the lower connecting rod are provided with a sleeve, a rotating shaft is rotatably installed in the sleeve, and a rubber pad is provided between the rotating shaft and the inner wall of the sleeve.

[0010] Furthermore, a second damper is provided between each of the two ends of the auxiliary support beam and the main support beam, and the two second dampers are symmetrically arranged with respect to the main support beam.

[0011] Furthermore, the connecting member is an H-shaped structure, one end of the upper connecting rod extends into the upper end of the connecting member and is hinged to the connecting member, and one end of the lower connecting rod extends into the lower end of the connecting member and is hinged to the connecting member.

[0012] Furthermore, the main support beam is a hollow structure with an open top, the inner side of the main support beam has a first reinforcing rib, and the bottom of the main support beam has a second reinforcing rib.

[0013] Furthermore, the end of the main support beam has a mounting groove, the sleeve at one end of the upper connecting rod is located in the mounting groove, the bottom of the main support beam has a first ear plate, the sleeve at one end of the lower connecting rod is hinged to the first ear plate, the side wall of the main support beam has a second ear plate, and the second ear plate is hinged to the second damper.

[0014] The beneficial effects of the present invention are as follows: the present invention absorbs the vibration generated during the movement of the vehicle body through the setting of the shock-absorbing spring, thereby playing a shock-absorbing role. The setting of the first damper can slow down the speed of energy release of the shock-absorbing spring, thereby avoiding the shaking of the vehicle body caused by the sudden release of energy of the shock-absorbing spring; by adding hydraulic oil to the first damper through the electro-hydraulic controller, the first damper is made harder, which can enhance the damping effect of the first damper, so that the energy release of the shock-absorbing spring is slower to adapt to a more severe ground environment. By extracting hydraulic oil from the first damper through the electro-hydraulic controller, the first damper is made softer, which can weaken the damping effect of the first damper, slow down the hindering effect on the energy release of the shock-absorbing spring, so as to adapt to a less severe ground environment, thereby enhancing the shock-absorbing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A three-dimensional diagram of the present invention; Figure 2 A three-dimensional diagram of the main support beam and the electro-hydraulic controller of the present invention; Figure 3 A three-dimensional diagram of the main support beam of the invention; Figure 4 A three-dimensional assembly diagram of the tire and the main support beam of the present invention; Figure 5 A three-dimensional assembly diagram of the upper connecting rod, the lower connecting rod and the tire; Figure 6 The three-dimensional assembly drawing of the lower connecting rod and the main support beam; Figure 7 for Figure 5 A local enlarged view of point A in FIG. In the figure: 1 main support beam, 2 chassis, 3 auxiliary support beam, 4 tire, 41 connecting piece, 5 upper connecting rod, 51 sleeve, 52 rotating shaft, 6 lower connecting rod, 61 protrusion, 7 first damper, 8 second damper, 9 shock-absorbing spring, 10 electro-hydraulic controller, 11 first connecting pipe, 12 second connecting pipe, 13 rubber pad, 14 first reinforcing rib, 15 second reinforcing rib, 16 mounting groove, 17 first ear plate, 18 second ear plate. DETAILED DESCRIPTION

[0016] like Figures 1 to 7 As shown, the present invention comprises a main support beam 1, a tire 4 and a buffer assembly. The present invention is described in detail below in conjunction with the accompanying drawings.

[0017] like Figures 1 to 7 As shown, the heavy-duty power chassis electro-hydraulic shock absorbing device includes a main support beam 1, a tire 4 and a buffer assembly. The main support beam 1 is located below the vehicle chassis 2, and the main support beam 1 is fixedly connected to the chassis 2. Figure 4 As shown, the tire 4 has a connecting member 41, and an upper connecting rod 5 and a lower connecting rod 6 are arranged between the connecting member 41 and the end of the main support beam 1. One end of the upper connecting rod 5 and the lower connecting rod 6 is hingedly connected to the connecting member 41, and the other end of the upper connecting rod 5 and the lower connecting rod 6 is hingedly connected to the main support beam 1, as shown in FIG. Figure 6 As shown, there is a shock absorbing spring 9 between the lower connecting rod 6 and the bottom of the main support beam 1. When encountering uneven ground, the setting of the shock absorbing spring 9 can absorb part of the vibration of the vehicle body. The vehicles in the prior art all reduce the vibration of the vehicle body by setting the shock absorbing spring 9 or the spring plate. The present invention slows down the release of the energy of the shock absorbing spring 9 by setting a buffer component, such as Figure 4 , Figure 6As shown, the buffer assembly includes a first damper 7 arranged between the lower connecting rod 6 and the bottom of the main support beam 1 and an electro-hydraulic controller 10 arranged on the top of the main support beam 1. The electro-hydraulic controller 10 is connected to the first damper 7 through a first connecting pipe 11, and hydraulic oil is added to or extracted from the first damper 7 through the first connecting pipe 11. After the electro-hydraulic controller 10 adds more hydraulic oil to the first damper 7 through the first connecting pipe 11, the first damper 7 becomes hard, that is, the damping effect of the first damper 7 is enhanced.

[0018] When the vehicle encounters a relatively bad ground environment, such as a deep pothole, the shock-absorbing spring 9 will deform relatively large to absorb more vehicle vibrations. At this time, the first damper 7 shortens as the shock-absorbing spring 9 is compressed. After adding more hydraulic oil to the first damper 7 through the electro-hydraulic controller 10, when the shock-absorbing spring 9 rebounds, the first damper 7 has a relatively large hindering effect on the rebound of the shock-absorbing spring 9, and has a strong effect on slowing down the energy release of the shock-absorbing spring 9, thereby avoiding shaking caused by the rapid release of energy from the shock-absorbing spring 9. When the vehicle encounters a less severe ground environment during driving, the shock-absorbing spring 9 has a relatively small deformation, and absorbs less vehicle vibrations. At this time, the first damper 7 shortens with the compression of the shock absorber spring 9 and the shortening amount is relatively small. After a small amount of hydraulic oil is added into the first damper 7 through the electro-hydraulic controller 10, when the shock absorber spring 9 rebounds, the first damper 7 has a relatively small hindering effect on the rebound of the shock absorber spring 9, and the effect of slowing down the release of energy of the shock absorber spring 9 is relatively weak, thereby avoiding shaking caused by the rapid release of energy of the shock absorber spring 9.

[0019] The connection between the first damper 7 and the main support beam 1 and the lower connecting rod 6 can be a hinge connection, such as Figure 4 As shown, the lower end of the first damper 7 is hinged to the lower connecting rod 6, as shown in FIG. Figure 6 As shown, the upper end of the first damper 7 is hingedly connected to the main support beam 1. In addition, the lower end of the first damper 7 and the lower connecting rod 6 can also be in a rotational connection relationship, and the upper end of the first damper 7 and the main support beam 1 can also be in a rotational connection relationship. The hinge connection relationship and the rotational connection relationship between the first damper 7 and the main support beam 1 and the lower connecting rod 6 can both meet the swinging movement requirements of the lower connecting rod 6 relative to the main support beam 1.

[0020] To facilitate the installation of the damping spring 9, Figure 6 As shown, the outer wall of the lower connecting rod 6 has a protrusion 61, the lower end of the shock-absorbing spring 9 is fixedly connected to the protrusion 61, and the upper end of the shock-absorbing spring 9 is fixedly connected to the bottom of the main supporting beam 1.

[0021] When the vehicle starts or brakes suddenly, the vehicle will vibrate in the front and rear directions due to inertia. To reduce the vibration of the vehicle in the front and rear directions of travel, Figure 6 As shown, a secondary support beam 3 is fixed on the protrusion 61, and a second damper 8 is provided between the secondary support beam 3 and the main support beam 1, and the second damper 8 is connected to the electro-hydraulic controller 10 through the second connecting pipe 12. The electro-hydraulic controller 10 can add hydraulic oil to the second damper 8 through the second connecting pipe 12, and can also extract the hydraulic oil in the second damper 8 through the second connecting pipe 12. After the electro-hydraulic controller 10 adds relatively more hydraulic oil to the second damper 8, the second damper 8 is harder, and at this time, it can block larger vibrations in the front and rear directions of the vehicle body. After the electro-hydraulic controller 10 adds relatively less hydraulic oil to the second damper 8, the second damper 8 is softer, and at this time, it can block smaller vibrations in the front and rear directions of the vehicle body. In order to ensure the stability of the structure, a second damper 8 is provided between each end of the secondary support beam 3 and the main support beam 1, and the two second dampers 8 are symmetrically arranged about the main support beam 1.

[0022] To facilitate the installation of the upper connecting rod 5 and the lower connecting rod 6, Figure 4 , Figure 5 As shown, both ends of the upper connecting rod 5 and the lower connecting rod 6 have sleeves 51. Figure 7 As shown, a rotating shaft 52 is rotatably installed in the sleeve 51, and a rubber pad 13 is provided between the rotating shaft 52 and the inner wall of the sleeve 51. The rubber pad 13 is provided to increase the friction between the sleeve 51 and the rotating shaft 52 and reduce the noise between the sleeve 51 and the rotating shaft 52. During installation, the rotating shaft 52 is fixedly connected to the main support beam 1 or the connecting member 41, so that the hinge connection between the upper connecting rod 5, the lower connecting rod 6 and the main support beam 1 and the connecting member 41 can be realized.

[0023] To facilitate assembly, Figure 4 As shown, the connecting member 41 is an H-shaped structure, one end of the upper connecting rod 5 extends into the upper end of the connecting member 41 and is hingedly connected to the connecting member 41, and one end of the lower connecting rod 6 extends into the lower end of the connecting member 41 and is hingedly connected to the connecting member 41. Figure 4 , Figure 6 As shown, the end of the main support beam 1 has a mounting groove 16, the sleeve 51 at one end of the upper connecting rod 5 is located in the mounting groove 16, the bottom of the main support beam 1 has a first ear plate 17, the sleeve 51 at one end of the lower connecting rod 6 is hingedly connected to the first ear plate 17, and the side wall of the main support beam 1 has a second ear plate 18, and the second ear plate 18 is hingedly connected to the second damper 8. The main support beam 1 is a hollow structure with an open top, as shown in FIG. Figure 4 As shown, the lower part of the electro-hydraulic controller 10 is located inside the main support beam 1. Figure 2 As shown, the main support beam 1 has a first reinforcing rib 14 on the inner side. Figure 3 As shown, the bottom of the main support beam 1 has a second reinforcing rib 15 to enhance the structural strength of the main support beam 1 .

[0024] The working principle of the present invention is described below: (1) When the ground environment is relatively bad, such as when encountering a large pothole, the shock-absorbing spring 9 is compressed to a greater extent and absorbs more vehicle vibration. At the same time, the first damper 7 shrinks accordingly; when the shock-absorbing spring 9 rebounds, the electro-hydraulic controller 10 adds more hydraulic oil to the first damper 7. At this time, the first damper 7 has a greater blocking effect on the rebound of the shock-absorbing spring 9, slowing down the rapid release of the energy of the shock-absorbing spring 9. (2) When the ground environment is less bad, such as when encountering a small pothole, the shock-absorbing spring 9 is compressed to a less extent and absorbs less vehicle vibration. At the same time, the first damper 7 shrinks accordingly; when the shock-absorbing spring 9 rebounds, the electro-hydraulic controller 10 adds less hydraulic oil to the first damper 7. At this time, the first damper 7 has a smaller blocking effect on the rebound of the shock-absorbing spring 9, and has a weaker effect on slowing down the rapid release of the energy of the shock-absorbing spring 9. (3) When the vehicle vibrates in the front and rear directions, the electro-hydraulic controller 10 adds hydraulic oil to the second damper 8, thereby reducing the vibration of the vehicle in the front and rear directions. And according to the degree of front and rear vibration of the vehicle, the electro-hydraulic controller 10 adds different amounts of hydraulic oil into the second damper 8 to achieve adaptive shock absorption.

[0025] The present invention absorbs the vibration generated during the movement of the vehicle body through the setting of the shock-absorbing spring, thereby playing a shock-absorbing role. The setting of the first damper can slow down the speed of the energy release of the shock-absorbing spring, thereby avoiding the shaking of the vehicle body caused by the sudden release of the energy of the shock-absorbing spring; by adding hydraulic oil to the first damper through the electro-hydraulic controller, the first damper is made harder, which can enhance the damping effect of the first damper, so that the energy release of the shock-absorbing spring is slower to adapt to a more severe ground environment. By extracting hydraulic oil from the first damper through the electro-hydraulic controller, the first damper is made softer, which can weaken the damping effect of the first damper, slow down the hindering effect on the energy release of the shock-absorbing spring, so as to adapt to a less severe ground environment, thereby enhancing the shock-absorbing effect.

Claims

1. A heavy-duty power chassis electro-hydraulic shock absorbing device, comprising a main support beam and a tire, wherein the main support beam is fixedly connected to the vehicle chassis, the tire is provided with a connecting piece, an upper connecting rod and a lower connecting rod are provided between the connecting piece and the end of the main support beam, one end of the upper connecting rod and the lower connecting rod is hingedly connected to the connecting piece, the other end of the upper connecting rod and the lower connecting rod is hingedly connected to the main support beam, a shock absorbing spring is provided between the lower connecting rod and the bottom of the main support beam, characterized in that: It also includes a buffer assembly, which includes a first damper arranged between the lower connecting rod and the bottom of the main support beam and an electro-hydraulic controller arranged on the top of the main support beam. The electro-hydraulic controller is connected to the first damper through a first connecting pipe, and hydraulic oil is added to or extracted from the first damper through the first connecting pipe.

2. The heavy-duty power chassis electro-hydraulic shock absorbing device according to claim 1, characterized in that: The lower end of the first damper is hinged to the lower connecting rod, and the upper end of the first damper is hinged to the main supporting beam.

3. The heavy-duty power chassis electro-hydraulic shock absorbing device according to claim 1, characterized in that: The lower end of the first damper is rotatably connected to the lower connecting rod, and the upper end of the first damper is rotatably connected to the main supporting beam.

4. The heavy-duty power chassis electro-hydraulic shock absorbing device according to claim 1, characterized in that: The outer wall of the lower connecting rod has a protrusion, the lower end of the shock absorbing spring is fixedly connected to the protrusion, and the upper end of the shock absorbing spring is fixedly connected to the bottom of the main supporting beam.

5. The heavy-duty power chassis electro-hydraulic shock absorbing device according to claim 4, characterized in that: A secondary support beam is fixed on the protrusion, a second damper is provided between the secondary support beam and the main support beam, and the second damper is connected to the electro-hydraulic controller through a second connecting pipe.

6. The heavy-duty power chassis electro-hydraulic shock absorbing device according to claim 1, characterized in that: Both ends of the upper connecting rod and the lower connecting rod are provided with sleeves, a rotating shaft is rotatably installed in the sleeve, and a rubber pad is provided between the rotating shaft and the inner wall of the sleeve.

7. The heavy-duty power chassis electro-hydraulic shock absorbing device according to claim 4, characterized in that: A second damper is provided between each of the two ends of the auxiliary support beam and the main support beam, and the two second dampers are symmetrically arranged with respect to the main support beam.

8. The heavy-duty power chassis electro-hydraulic shock absorbing device according to claim 1, characterized in that: The connecting member is an H-shaped structure, one end of the upper connecting rod extends into the upper end of the connecting member and is hinged to the connecting member, and one end of the lower connecting rod extends into the lower end of the connecting member and is hinged to the connecting member.

9. The heavy-duty power chassis electro-hydraulic shock absorbing device according to claim 1, characterized in that: The main support beam is a hollow structure with an open top, the inner side of the main support beam is provided with a first reinforcing rib, and the bottom of the main support beam is provided with a second reinforcing rib.

10. The heavy-duty power chassis electro-hydraulic shock absorbing device according to claim 6, characterized in that: The end of the main support beam has a mounting groove, the sleeve at one end of the upper connecting rod is located in the mounting groove, the bottom of the main support beam has a first ear plate, the sleeve at one end of the lower connecting rod is hingedly connected to the first ear plate, the side wall of the main support beam has a second ear plate, and the second ear plate is hingedly connected to the second damper.

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