V-shaped telescopic thrust rod
By designing a V-shaped telescopic push rod in an airbag tractor, the axial force of the drag arm is offset by using the spherical bearing and hydraulic oil chamber structure, the deformation and tire wear problems at the wheel axle connection are solved, and the lower The fuel consumption and higher safety are provided, while providing shock absorption and balance functions, improving vehicle operation efficiency and safety.
Patent Information
- Application Number
- CN202420120897.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-18
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-01-18
AI Technical Summary
In airbag tractors, the connection between the wheel axle and the frame is susceptible to excessive axial forces when turning, which causes deformation and breakage of the drag arm bracket, which increases tire wear and fuel consumption, and poses safety hazards.
Design a V-shaped telescopic push rod, by setting left telescopic and right telescopic push rods between the frame and the wheel axle, and using a spherical bearing and hydraulic oil chamber separation structure to offset the shaft affected by the drag arm The directional force is adjusted and the hydraulic pressure is adjusted through the flow pipe and the adjustable throttle valve to achieve stable support for the wheel axle.
Effectively reduce the axial force exerted by the drag arm, extend the tire life, reduce driving resistance, improve safety, reduce fuel consumption, and provide shock absorption and balance functions during up and down movement of the vehicle to avoid airbag damage and vehicle rollover.
Smart Images
Figure CN222157635U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of thrust rods, in particular to a V-shaped telescopic thrust rod. Background Art
[0002] At present, in vehicles such as airbag tractors and airbag trailers, the wheel axles of the rear wheels are generally connected to the frame through a trailing arm. Specifically, the wheel axles are connected to the trailing arm through the airbag, and the trailing arm is directly connected to the frame. When the vehicle turns, the frame rotates first, and then the wheel axles are driven to rotate through the trailing arm. At this time, the trailing arm and the wheel axles will be subjected to a large axial force. Due to the sliding friction between the tire and the ground, the resistance is large, and the force transmitted to the trailing arm bracket by the vehicle body exceeds the yield strength of its material. After deformation, it cannot be restored, resulting in the radial direction of the tire. It cannot be parallel to the center line of the vehicle body. During the journey, the vehicle body tilts forward, the tires slide and rub against the road, increasing the driving resistance, causing tail swinging, and increased tire wear, thereby shortening the tire service life and increasing fuel consumption. Secondly, due to the setting of the airbag, the connection between the wheel axle and the frame is not easy to be damaged. However, the excessive axial force generated by a small radius turn will pull the connection between the trailing arm and the frame. During the long-term operation of the vehicle, in serious cases, the trailing arm bracket will be deformed or broken, and the trailing arm may even fall off, posing a great safety hazard. Utility Model Content
[0003] The technical problem to be solved by the utility model is to provide a V-shaped telescopic thrust rod in view of the deficiencies in the prior art, which can effectively reduce the axial force on the trailing arm and transmit the force generated when the vehicle body turns to the axle through the utility model, thereby helping to protect the tire and the connection between the trailing arm and the frame without affecting the free up and down movement of the wheel axle during the operation of the vehicle.
[0004] The technical problem to be solved by the utility model is achieved by the following technical scheme. The utility model is a V-shaped telescopic thrust rod, comprising a left telescopic thrust rod and a right telescopic thrust rod arranged in a V shape between a vehicle frame and a wheel shaft, the left telescopic thrust rod and the right telescopic thrust rod both comprising a thrust cylinder with closed ends, the thrust cylinder being installed on the wheel shaft through a spherical bearing, a thrust cavity being arranged in the thrust cylinder, a thrust piston being installed in the thrust cavity, the thrust piston dividing the thrust cavity into two oil cavities arranged independently of each other, hydraulic oil being arranged in each oil cavity, thrust rod bodies being fixedly connected at both ends of the thrust piston, the other end of the thrust rod body close to one side of the vehicle frame extending out of the thrust cylinder and connected to the vehicle frame through a spherical bearing, the other end of the thrust rod body close to one side of the wheel shaft extending out of the thrust cylinder and extending to the outside of the thrust cylinder, and a reciprocating dynamic seal cooperating with the thrust rod body being also installed on the thrust cylinder.
[0005] The technical problem to be solved by the present invention can be further achieved through the following technical solutions. For the V-shaped telescopic thrust rod described above, a travel cavity cooperating with the thrust rod body is further provided on the thrust cylinder close to the wheel axle side.
[0006] The technical problem to be solved by the utility model can be further achieved through the following technical scheme. For the V-shaped telescopic thrust rod described above, the oil chamber of the left telescopic thrust rod close to the frame side is set as the left first oil chamber, the oil chamber of the left telescopic thrust rod close to the wheel axle side is set as the left second oil chamber, the oil chamber of the right telescopic thrust rod close to the frame side is set as the right first oil chamber, and the oil chamber of the right telescopic thrust rod close to the wheel axle side is set as the right second oil chamber. Filling holes and exhaust holes are provided on the left first oil chamber, the left second oil chamber, the right first oil chamber, and the right second oil chamber, and the filling holes and the exhaust holes are sealed by sealing plugs.
[0007] The technical problem to be solved by the present invention can also be further achieved through the following technical solutions. For the V-shaped telescopic thrust rod described above, a first flow pipe is connected between the left first oil chamber and the right second oil chamber, and a second flow pipe is connected between the left second oil chamber and the right first oil chamber.
[0008] The technical problem to be solved by the utility model can be further achieved through the following technical solution. For the V-shaped telescopic thrust rod described above, a first throttle valve is installed on the first circulation pipeline, and a second throttle valve is installed on the second circulation pipeline.
[0009] The technical problem to be solved by the present invention can be further achieved through the following technical solution. For the V-shaped telescopic thrust rod described above, both the first throttle valve and the second throttle valve are adjustable throttle valves.
[0010] The technical problem to be solved by the present invention can be further achieved by the following technical solution. For the V-shaped telescopic thrust rod described above, the angle between the left telescopic thrust rod and the right telescopic thrust rod is 60°-90°.
[0011] Compared with the prior art, the utility model has the following beneficial effects:
[0012] 1. When the vehicle turns, the present application can effectively reduce the axial force on the trailing arm, thereby avoiding sliding friction between the tire and the road surface, extending the service life of the tire, and reducing driving resistance, which helps to reduce fuel consumption;
[0013] 2. The present application can well protect the connection between the trailing arm and the frame, prevent deformation of the trailing arm bracket, displacement, breakage or falling off of the wheel axle and the trailing arm caused by axial movement, and has good safety. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a structural schematic diagram of the utility model. DETAILED DESCRIPTION
[0015] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0016] Reference Figure 1 , a V-shaped telescopic thrust rod, comprising a left telescopic thrust rod 4 and a right telescopic thrust rod 5 which are arranged in a V shape between the frame 1 and the wheel axle 3. In the prior art, the trailing arm 2 is installed on the frame 1 through a transverse rotating shaft, and can rotate up and down with the frame 1. The wheel axle 3 is installed on the trailing arm 2 through an airbag. However, when the vehicle turns, the trailing arm 2 will be laterally displaced from the frame 1, which can easily cause damage to the connection between the trailing arm 2 and the frame 1. The left telescopic thrust rod 4 and the right telescopic thrust rod 5 which are arranged in a V shape between the frame 1 and the wheel axle 3 can be telescoped when the trailing arm 2 is about to be laterally displaced from the frame 1, so that the axial tension on the connection between the trailing arm 2 and the frame 1 can be reduced as much as possible, and the deformation of the trailing arm 2 bracket, the fracture of the connecting shaft, the premature damage or falling off of the rubber sleeve caused by the axial movement can be prevented, and the safety is good;
[0017] Preferably, the angle between the left telescopic thrust rod 4 and the right telescopic thrust rod 5 is 60°-90°;
[0018] Specifically, the left telescopic thrust rod 4 and the right telescopic thrust rod 5 both include a thrust cylinder 6 with closed ends, the thrust cylinder 6 is installed on the wheel axle 3 through a spherical bearing 11, a thrust chamber 8 is provided in the thrust cylinder 6, a thrust piston 7 is installed in the thrust chamber 8, the thrust piston 7 divides the thrust chamber 8 into two oil chambers independently provided with each other, hydraulic oil is provided in each oil chamber, and thrust rod bodies 9 are fixedly connected to both ends of the thrust piston 7, the other end of the thrust rod body 9 close to the side of the frame 1 extends out of the thrust cylinder 6 and is connected to the frame 1 through the spherical bearing 11, the other end of the thrust rod body 9 close to the side of the wheel axle 3 extends out of the thrust cylinder 6 and extends to the outside of the thrust cylinder 6, preferably, a stroke chamber 16 cooperating with the thrust rod body 9 is also provided on the thrust cylinder 6 close to the side of the wheel axle 3, for cooperating with the thrust rod body 9 for reciprocating movement. The thrust piston 7 can reciprocate in the thrust chamber 8, and the hydraulic oil in the oil chamber on which side the thrust piston 7 moves will be squeezed, and the greater the squeezing degree, the greater the resistance, so that the pulling force on the trailing arm 2 can be better offset; the spherical bearing 11 can withstand large radial and axial loads, and can withstand a certain degree of impact and vibration, so that the left telescopic thrust rod 4 and the right telescopic thrust rod 5 can better move relative to the frame 1 and the wheel axle 3, so as to better offset the axial pulling force on the trailing arm 2, so as to better play the role of thrust;
[0019] A reciprocating dynamic seal 10 is also installed on the thrust cylinder 6 and cooperates with the thrust rod body, which neither affects the relative movement between the thrust rod body 9 and the thrust cylinder 6 nor affects the sealing performance of the thrust cylinder 6;
[0020] More specifically, the oil chamber of the left telescopic thrust rod 4 near the side of the frame 1 is set as the first left oil chamber, the oil chamber of the left telescopic thrust rod 4 near the side of the wheel shaft 3 is set as the second left oil chamber, the oil chamber of the right telescopic thrust rod 5 near the side of the frame 1 is set as the first right oil chamber, and the oil chamber of the right telescopic thrust rod 5 near the side of the wheel shaft 3 is set as the second right oil chamber. Filling holes and exhaust holes are set on the first left oil chamber, the second left oil chamber, the first right oil chamber, and the second right oil chamber to facilitate the filling and exhaust operations of the hydraulic oil, and the filling holes and the exhaust holes are sealed by sealing plugs;
[0021] A first flow pipe 12 is connected between the left first oil chamber and the right second oil chamber to facilitate the mutual flow of hydraulic oil between the left first oil chamber and the right second oil chamber, and a second flow pipe 14 is connected between the left second oil chamber and the right first oil chamber to facilitate the mutual flow of hydraulic oil between the left second oil chamber and the right first oil chamber; preferably, a first throttle valve 13 is installed on the first flow pipe 12, and a second throttle valve 15 is installed on the second flow pipe 14, so as to facilitate adjusting the opening of the first flow pipe 12 and the second flow pipe 14 through the first throttle valve 13 and the second throttle valve 15 to adjust the damping force. Further preferably, the first throttle valve 13 and the second throttle valve 15 are both adjustable throttle valves.
[0022] When in use, when the vehicle turns left, the axial force on the trailing arm 2 is directed to the left, the frame 1 drives the trailing arm 2, and the trailing arm 2 drives the wheel shaft 3 to move to the left, and at the same time drives the spherical bearing 11 at the connection between the right telescopic thrust rod 5 and the wheel shaft 3 to move to the left, so that the thrust piston 7 of the right telescopic thrust rod 5 moves toward the side of the frame 1, and the hydraulic oil in the right first oil chamber is pressurized, and the hydraulic oil is forced to flow to the left second oil chamber through the second flow pipe 14. At the same time, the spherical bearing 11 at the connection between the left telescopic thrust rod 4 and the wheel shaft 3 1 moves to the left, and the thrust piston 7 of the left telescopic thrust rod 4 moves toward the side of the vehicle frame 1, and the hydraulic oil in the left first oil chamber is pressurized. Since the hydraulic areas of the left telescopic thrust rod 4 and the right telescopic thrust rod 5 are the same, equal pressure can be generated. Therefore, the internal pressures of the two can offset each other, and the thrust pistons 7 of the two do not move, so that the left telescopic thrust rod 4, the right telescopic thrust rod 5 and the wheel shaft 3 form a stable triangle state, and then the wheel shaft 3 does not have axial deviation, and can only move as a whole with the vehicle body;
[0023] When the vehicle makes a right turn, the axial force on the trailing arm 2 is directed to the right, and the working condition is the opposite;
[0024] Secondly, when the vehicle goes uphill or downhill or on bumpy roads, the wheel axle 3 moves downward under the tension of the airbag, and the hydraulic oil in the left second oil chamber and the right second oil chamber flows into the left first oil chamber and the right first oil chamber through the first flow pipe 12 and the second flow pipe 14 respectively under the action of the thrust piston 7, and the thrust rod bodies 9 close to the side of the wheel axle 3 are extended at the same time, and vice versa, they are retracted at the same time, without restricting the up and down movement of the wheel axle 3. The first throttle valve 13 and the second throttle valve 15 can effectively adjust the liquid flow, control the damping force, and play a shock absorbing role. In addition, the stroke of the thrust piston 7 can effectively control the up and down movement of the wheel axle 3, play a limiting role, and prevent the airbag from being torn and detached due to excessive stroke of the wheel axle 3 and the frame 1.
[0025] The V-shaped telescopic thrust rod provided in this application has the following functions:
[0026] 1. Thrust function
[0027] Prevent deformation of the trailing arm bracket caused by excessive lateral force;
[0028] 2. Damping effect
[0029] Can replace hydraulic shock absorbers;
[0030] 3. Improve wheel axle function
[0031] 4. Balance function
[0032] Replaces the traction vehicle's balance bar and is superior to the existing balance bar;
[0033] 5. Limit function
[0034] 6. Simplify the vehicle design of the airbag bridge tractor, reduce the use of airbags and related components, and reduce the overall vehicle weight, manufacturing and cost.
[0035] The advantages of the V-shaped telescopic thrust rod provided by the present application are:
[0036] 1. The application of this application can reduce the number of airbags used in airbag tractors by up to half, thereby helping to reduce the overall weight of the vehicle, reduce production costs, use costs, reduce failure rates, and improve fuel efficiency and vehicle operation efficiency;
[0037] 2. Prevent the airbag trailer from axially moving when turning, causing the bracket to deform, and the bracket material cannot return to its original position due to the yield strength exceeding the bracket material, thus preventing the tire from being eaten, thereby avoiding the shortening of tire service life, increasing driving resistance, and increasing fuel consumption as much as possible;
[0038] 3. When the vehicle airbag is damaged, the wheel axle can be lifted to allow the vehicle to continue driving to the repair shop, thus preventing traffic jams and accidents caused by parking due to a breakdown;
[0039] 4. It has a damping effect, which can increase the damping force and eliminate the situation where the vehicle bounces up and down due to insufficient damping force, causing the fully loaded vehicle to increase its weight when weighed and unable to go on the highway, which helps to improve the traffic efficiency of the vehicle;
[0040] 5. The balancing function can prevent the vehicle from rolling over. For example, in the long-term use of a rear-tip dump truck, the performance of the leaf spring is reduced due to uneven road conditions, and the car body is prone to one side being higher than the other. As the car body rises, it is easy to cause overturning and dangerous accidents. The present application can avoid this situation as much as possible.
Claims
1. A V-shaped telescopic thrust rod, Features: It comprises a left telescopic thrust rod and a right telescopic thrust rod which are arranged in a V shape between a vehicle frame and a wheel axle. Both the left telescopic thrust rod and the right telescopic thrust rod comprise a thrust cylinder with closed ends. The thrust cylinder is installed on the wheel axle through a spherical bearing. A thrust chamber is arranged in the thrust cylinder. A thrust piston is installed in the thrust chamber. The thrust piston divides the thrust chamber into two oil chambers which are independently arranged. Hydraulic oil is arranged in each of the oil chambers. Both ends of the thrust piston are fixedly connected with a thrust rod body. The other end of the thrust rod body close to one side of the vehicle frame extends out of the thrust cylinder and is connected to the vehicle frame through a spherical bearing. The other end of the thrust rod body close to one side of the wheel axle extends out of the thrust cylinder and extends to the outside of the thrust cylinder. A reciprocating dynamic seal which cooperates with the thrust rod body is also installed on the thrust cylinder.
2. The V-shaped telescopic thrust rod according to claim 1, Features: A travel cavity matched with the thrust rod body is also arranged on the thrust cylinder close to the wheel shaft side.
3. The V-shaped telescopic thrust rod according to claim 2, Features: The oil chamber of the left telescopic thrust rod close to the frame side is set as the left first oil chamber, the oil chamber of the left telescopic thrust rod close to the wheel axle side is set as the left second oil chamber, the oil chamber of the right telescopic thrust rod close to the frame side is set as the right first oil chamber, and the oil chamber of the right telescopic thrust rod close to the wheel axle side is set as the right second oil chamber. Filling holes and exhaust holes are set on the left first oil chamber, the left second oil chamber, the right first oil chamber and the right second oil chamber, and the filling holes and the exhaust holes are sealed by sealing plugs.
4. The V-shaped telescopic thrust rod according to claim 3, Features: A first flow channel is connected between the first left oil chamber and the second right oil chamber, and a second flow channel is connected between the second left oil chamber and the first right oil chamber.
5. The V-shaped telescopic thrust rod according to claim 4, Features: A first throttle valve is installed on the first flow pipe, and a second throttle valve is installed on the second flow pipe.
6. The V-shaped telescopic thrust rod according to claim 5, Features: The first throttle valve and the second throttle valve are both adjustable throttle valves.
7. The V-shaped telescopic thrust rod according to claim 1, Features: The angle between the left telescopic thrust rod and the right telescopic thrust rod is 60°-90°.