Wheel variable stiffness suspension device
By designing a wheel stiffness suspension device including a bogie, solenoid valve and oil cylinder, a flexible connection method between the wheel and the vehicle body is realized, and the problem of inflexible connection method in the prior art is solved, the stability and safety of the equipment are improved, and vibration is reduced.
Patent Information
- Application Number
- CN202421655390.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-14
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-07-14
AI Technical Summary
The existing wheel connection method is difficult to achieve flexible transformation of rigid and elastic connections when the vehicle body is running, resulting in the equipment that may fluctuate and sway and safety hazards when the equipment moves or changes in the center of gravity, and will cause large vibrations when the road surface is uneven.
A wheel stiffness suspension device is designed, including a bogie, a solenoid valve and an oil cylinder. The on and off of the upper and lower oil chambers of the cylinder are controlled by the solenoid valve to achieve elastic or rigid movement of the piston rod, thereby changing between rigid and elastic connections.
It realizes a flexible connection between the wheel and the vehicle body, and can change between rigid and elastic connections as needed, improves the stability and safety of the equipment during movement, and reduces vibrations during uneven road surfaces.
Smart Images
Figure CN222807859U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of wheels, in particular to a variable stiffness suspension device for wheels. Background Art
[0002] The existing wheel connection is relatively simple, and the wheel is generally connected to the vehicle body with a spring structure, or the wheel is directly connected and fixed to the vehicle body. Although the former wheel can play a shock-absorbing role when the vehicle body is running, when the equipment on the vehicle body needs to move, the movement of the equipment or the change of the center of gravity will cause the vehicle body to fluctuate, making it impossible to operate the equipment with high precision, and it may also fall due to the movement of the equipment, causing safety hazards. The latter wheel is directly connected to the vehicle body. If the road surface is uneven when the vehicle body is running, it will produce large vibrations and even damage the equipment. Summary of the invention
[0003] The technical problem to be solved by the utility model is to overcome the above-mentioned defects of the prior art and provide a wheel variable stiffness suspension device, so that when the wheel is connected to the vehicle body through the wheel variable stiffness suspension device, the connection between the wheel and the vehicle body can be changed between a rigid connection and an elastic connection as needed.
[0004] The technical solution adopted by the utility model to solve the above technical problems is:
[0005] A wheel variable stiffness suspension device comprises a bogie, a solenoid valve and a cylinder; the cylinder comprises a cylinder cavity, a piston and a compression spring; the cylinder cavity is arranged inside the bogie and is sealed by an oil seal cover; the piston divides the cylinder cavity into an upper oil cavity and a lower oil cavity; the compression spring is arranged in the upper oil cavity of the cylinder, one end of the compression spring is limited by the top of the upper oil cavity of the cylinder, and the other end is limited by the piston; the piston is provided with a lower piston rod and extends out of the oil seal cover; the solenoid valve connects the upper oil cavity of the cylinder and the lower oil cavity of the cylinder The solenoid valve is connected and disconnected by the upper and lower oil chambers of the oil cylinder; when the solenoid valve is not energized, the upper and lower oil chambers of the oil cylinder are connected to form a circuit, and the piston rod can move elastically due to the influence of oil pressure and compression spring; when the solenoid valve is energized, the upper and lower oil chambers of the oil cylinder form independent oil chambers, and the piston rod cannot move; or, when the solenoid valve is energized, the upper and lower oil chambers of the oil cylinder form a circuit, and the piston rod can move elastically due to the influence of oil pressure and compression spring; when the solenoid valve is closed after being de-energized, the upper and lower oil chambers of the oil cylinder form independent oil chambers, and the piston rod cannot move.
[0006] Preferably, the piston is provided with an upper piston rod, and a compression spring is sleeved on the upper piston rod to radially limit the compression spring.
[0007] Preferably, the solenoid valve cavity is arranged inside the bogie, so that the structure is simpler.
[0008] Preferably, the lower end of the lower piston rod is connected to a wheel bracket, the two wheel brackets are arranged opposite to each other, and the wheel is rotatably supported by the two wheel brackets.
[0009] Preferably, the wheel is directly rotatably supported by the lower end of the piston rod.
[0010] Compared with the prior art, the advantages of the present invention are: when the wheel variable stiffness suspension device of the present invention is used to connect the wheel to the vehicle body, the solenoid valve and the cylinder enable the wheel and the vehicle body to be switched between a rigid connection and an elastic connection as needed, and the structure is simple and easy to assemble. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a structural schematic diagram of the variable stiffness wheel suspension device of the embodiment of the utility model when the solenoid valve is not energized.
[0012] Figure 2 It is a structural schematic diagram of the variable stiffness wheel suspension device of the embodiment of the utility model when the solenoid valve is energized.
[0013] Figure 3 It is a structural schematic diagram of the variable stiffness wheel suspension device of the embodiment of the utility model when in use.
[0014] Figure 4 It is a schematic structural diagram of a wheel variable stiffness suspension device connected to a wheel in an embodiment of the utility model. DETAILED DESCRIPTION
[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0016] like Figure 1-4 As shown, a wheel variable stiffness suspension device includes a bogie 11, a solenoid valve 12, and a cylinder 15.
[0017] The oil cylinder 15 includes an oil cylinder cavity, a piston 151 and a compression spring 152. The oil cylinder 15 cavity is arranged inside the bogie 11 and is sealed by an oil seal cover 14. The piston 151 divides the oil cylinder cavity into an upper oil chamber and a lower oil chamber. The compression spring 152 is placed in the upper oil chamber of the oil cylinder, one end of which is limited by the top of the upper oil chamber of the oil cylinder, and the other end is limited by the piston 151.
[0018] The piston 151 is provided with a lower piston rod 154 extending out of the oil seal cover 14 .
[0019] The piston 151 is provided with an upper piston rod 153 , and the compression spring 152 is sleeved on the upper piston rod 153 to limit the compression spring 152 in radial direction.
[0020] The solenoid valve includes a main body, a solenoid valve stem 12, and a solenoid valve cavity. The solenoid valve cavity is arranged inside the bogie 11, and the solenoid valve cavity is divided into an upper cavity and a lower cavity. The upper cavity is communicated with the upper oil cavity of the oil cylinder through an upper through hole 114, and the lower cavity is communicated with the lower oil cavity of the oil cylinder through a lower channel 113. A sealing ring 112 is arranged between the upper cavity and the lower cavity, and a through hole is arranged in the center of the sealing ring to connect the upper cavity and the lower cavity. When the head of the solenoid valve stem is placed in the through hole of the sealing ring, the upper cavity of the solenoid valve cavity is disconnected from the lower cavity; when the head of the solenoid valve stem leaves the through hole, the upper cavity of the solenoid valve cavity is communicated with the lower cavity.
[0021] The solenoid valve cavity is supplied with oil through the oil inlet 13 .
[0022] The solenoid valve stem is controlled to move up and down by whether the main body is energized, so that it closes the through hole or leaves the through hole, which may have the following two situations:
[0023] When the solenoid valve body is not energized, the solenoid valve stem leaves the through hole and the solenoid valve is normally open. That is, when the solenoid valve body is not energized, the upper and lower oil chambers of the oil cylinder 15 are connected to form a circuit, and the piston rod can move elastically under the influence of oil pressure and compression spring, that is, the bogie 11 can move up and down; when the solenoid valve 12 is energized, the upper and lower oil chambers of the oil cylinder 15 form independent oil chambers, and the piston rod cannot move, that is, the bogie 11 is locked and cannot move up and down.
[0024] Alternatively, when the solenoid valve body is not powered, the solenoid valve stem is placed in the through hole to make the solenoid valve normally closed. That is, when the solenoid valve body is powered, the upper and lower oil chambers of the oil cylinder 15 form a circuit, and the piston rod can move elastically under the influence of oil pressure and compression spring, that is, the bogie 11 can move up and down; when the solenoid valve 12 is closed after being powered off, the upper and lower oil chambers of the oil cylinder 15 form independent oil chambers, and the piston rod cannot move, that is, the bogie 11 is locked and cannot move up and down.
[0025] In this embodiment, the lower end of the lower piston rod is connected to the wheel bracket 16 , the two wheel brackets 16 are arranged opposite to each other, and the wheel 17 is rotatably supported by the two wheel brackets 16 .
[0026] The wheel 17 can also be directly rotatably supported by the lower end of the piston rod.
Claims
1. A wheel variable stiffness suspension device, characterized in that: It comprises a bogie, a solenoid valve and a cylinder; the cylinder comprises a cylinder cavity, a piston and a compression spring, the cylinder cavity is arranged inside the bogie and is sealed by an oil seal cover, the piston divides the cylinder cavity into an upper oil cavity and a lower oil cavity, the compression spring is arranged in the upper oil cavity of the cylinder, one end of the compression spring is limited by the top of the upper oil cavity of the cylinder, and the other end is limited by the piston, the piston is provided with a lower piston rod and extends out of the oil seal cover; the solenoid valve is connected with the upper oil cavity of the cylinder and the lower oil cavity of the cylinder and is switched on and off by the solenoid valve; when the solenoid valve is not energized, the upper oil cavity and the lower oil cavity of the cylinder are connected to form a circuit, and the piston rod can move elastically due to the influence of oil pressure and the compression spring; when the solenoid valve is energized, the upper and lower oil cavities of the cylinder form independent oil cavities, and the piston rod cannot move; or, when the solenoid valve is energized, the upper and lower oil cavities of the cylinder form a circuit, and the piston rod can move elastically due to the influence of oil pressure and the compression spring; when the solenoid valve is closed after being de-energized, the upper and lower oil cavities of the cylinder form independent oil cavities, and the piston rod cannot move.
2. The variable stiffness wheel suspension device according to claim 1, characterized in that: The piston is provided with an upper piston rod, and a compression spring is sleeved on the upper piston rod to limit the compression spring in radial direction.
3. The variable stiffness wheel suspension device according to claim 1, characterized in that: The solenoid valve cavity is arranged inside the bogie.
4. The variable stiffness wheel suspension device according to claim 1, characterized in that: The lower end of the lower piston rod is connected to the wheel bracket, the two wheel brackets are arranged opposite to each other, and the wheel is rotatably supported by the two wheel brackets.
5. The variable stiffness wheel suspension device according to claim 1, characterized in that: The wheel is directly rotatably supported by the lower end of the piston rod.