CN212022236U - Device for reducing height of commercial vehicle body - Google Patents
Device for reducing height of commercial vehicle body Download PDFInfo
- Publication number
- CN212022236U CN212022236U CN202020507796.0U CN202020507796U CN212022236U CN 212022236 U CN212022236 U CN 212022236U CN 202020507796 U CN202020507796 U CN 202020507796U CN 212022236 U CN212022236 U CN 212022236U
- Authority
- CN
- China
- Prior art keywords
- oil
- valve
- double
- cavity
- height
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Vehicle Body Suspensions (AREA)
Abstract
The utility model provides a device for reducing the height of a commercial vehicle body, which comprises a hydraulic lifting mechanical device and a hydraulic oil circuit control system; the hydraulic lifting mechanical device is characterized in that 2 double-cavity oil cylinders of the hydraulic lifting mechanical device are symmetrically arranged on the left side and the right side of a frame, the double-cavity oil cylinders are connected between the frame and a front steel plate spring assembly, the head of a piston rod of each double-cavity oil cylinder is connected with a bracket, and the bracket is supported on the lower portion of the front steel plate spring assembly; a hydraulic oil way control system is constructed by using a steering vane pump and a steering oil can of a steering system of a commercial vehicle; when the vehicle normally runs, the double-cavity oil cylinder is in a free state; when the automobile passes through the height limiting area, the hydraulic oil way control system controls high-pressure oil to enter a lower cavity of the double-cavity oil cylinder, so that the front steel plate spring assembly is lifted, and the height of an automobile body is reduced; the utility model discloses the purpose that control reduced the automobile body height has been reached to simple structure arranges rationally, has guaranteed the heat dispersion of engine.
Description
Technical Field
The utility model belongs to the commercial car field relates to a commercial car reduces automobile body height device.
Background
At present, the domestic partial region has strict height limit requirement to commercial car, and commercial car producer reduces whole car height through reducing scheme such as automobile body suspension, reduction front suspension, frame subside, nevertheless receives the restriction of engine periphery, underbody, and it has the limitation to reduce the height, can't reduce specific height (the regional high restriction of limit for height), still can not reduce the height that satisfies the market demand. And the peripheral space of the engine is reduced, the arrangement is compact, and the heat radiation performance of the engine is influenced.
Disclosure of Invention
To the problem that exists among the prior art, the utility model provides a commercial car reduces automobile body height device, at frame both sides installation hydro-cylinder, when will reduce the front leaf spring assembly of control when high through the regional needs of limit for height promptly and mention, highly reduce the automobile body to pass through the limit for height region smoothly.
Therefore, the technical scheme of the utility model is that: the utility model provides a commercial car reduces automobile body height device which characterized in that: the hydraulic lifting device comprises a hydraulic lifting mechanical device and a hydraulic oil way control system;
the hydraulic lifting mechanical device comprises 2 double-cavity oil cylinders, wherein the 2 double-cavity oil cylinders are symmetrically arranged on the left side and the right side of a frame, the double-cavity oil cylinders are connected between the frame and a front steel plate spring assembly, the head parts of piston rods of the double-cavity oil cylinders are connected with a bracket, and the bracket is supported on the lower part of the front steel plate spring assembly;
the hydraulic oil path control system uses a steering vane pump and a steering oil can of a steering system of a commercial vehicle, adopts high-pressure oil output by the steering vane pump as power, and comprises an electromagnetic directional valve and a pneumatic directional valve, oil paths of the steering vane pump, the electromagnetic directional valve and the pneumatic directional valve are sequentially connected through a pipeline, an oil outlet of the pneumatic directional valve is communicated with a lower cavity of the double-cavity oil cylinder through the pipeline, and an oil outlet of the pneumatic directional valve is simultaneously communicated with an oil return port of the steering oil can and an upper cavity of the double-cavity oil cylinder; the vehicle-mounted air cylinder is communicated with the inlets of the first electromagnetic valve and the second electromagnetic valve through an air passage, the outlet of the first electromagnetic valve is communicated with a control port 1 of the pneumatic control reversing valve through the air passage, and the outlet of the second electromagnetic valve is communicated with a control port 2 of the pneumatic control reversing valve through the air passage; and a vehicle body control switch is arranged on an instrument desk in a cab of the commercial vehicle, and is respectively connected with the electromagnetic directional valve, the first electromagnetic valve and the second electromagnetic valve through circuits and used for controlling the electromagnetic directional valve, the first electromagnetic valve and the second electromagnetic valve.
To the utility model discloses a further inject: in order to form a large system with a steering system of a commercial vehicle, the steering system of the commercial vehicle and a hydraulic oil way control system share an electromagnetic directional valve, so that the electromagnetic directional valve adopts a 2-position 3-way electromagnetic directional valve, the layout of a hydraulic oil way is optimized, and the implementation is easy.
To the utility model discloses a further inject: in order to realize the effective control of the double-cavity oil cylinder and optimize the layout of a hydraulic oil path, the pneumatic control reversing valve is preferably a 3-position 3-ventilation control reversing valve with an unloading function.
To the utility model discloses a further inject: in order to improve the stress condition between the bracket and the front steel plate spring assembly and ensure flexible movement during lifting, the bracket is provided with a supporting wheel which is directly contacted with the lower part of the front steel plate spring assembly.
The utility model has the advantages that: when the vehicle runs normally, the steering system is normally used under the control of the hydraulic oil way control system, and the double-cavity oil cylinder is in a free state and does not limit the front steel plate spring assembly; when the automobile passes through the height limiting area, the hydraulic oil way control system controls high-pressure oil to enter a lower cavity of the double-cavity oil cylinder, so that the front steel plate spring assembly is lifted, and the height of an automobile body is reduced; the utility model constructs a hydraulic oil circuit control system by using a steering vane pump and a steering oil can of a steering system of a commercial vehicle on the basis of arranging a hydraulic lifting mechanical device, thereby achieving the purpose of controlling and reducing the height of a vehicle body; and simple structure arranges rationally, does not reduce engine peripheral space, has guaranteed the heat dispersion of engine.
Drawings
Fig. 1 is a schematic structural diagram of a hydraulic lifting mechanism of the present invention.
Fig. 2 is a control schematic diagram of the hydraulic oil circuit control system of the present invention.
Shown in FIG. 1: 1. a frame; 2. the oil cylinder is connected with the bracket; 3. a double-cavity oil cylinder; 4. a front leaf spring assembly; 5. locking the nut; 6. a bracket; 7. a front axle assembly; 3-1, a piston rod; 3-1-1. external thread head; and 6-1, supporting the wheels.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1 and fig. 2, the utility model discloses an embodiment, a commercial vehicle reduces the automobile body height device further, its characterized in that: the hydraulic lifting device comprises a hydraulic lifting mechanical device and a hydraulic oil way control system; the hydraulic lifting mechanical device comprises 2 double-cavity oil cylinders 3, wherein the 2 double-cavity oil cylinders 3 are symmetrically arranged on the left side and the right side of a frame 1, the double-cavity oil cylinders 3 are connected between the frame 1 and a front steel plate spring assembly 4, the head parts of piston rods of the double-cavity oil cylinders 3 are connected with a bracket 6 (the head parts 3-1-1 of external threads of the piston rods 3-1 are in matched threaded connection with threaded holes in the bracket and are locked by a locking nut 5), and the bracket 6 is supported on the lower part of the front steel plate spring assembly 4;
the hydraulic oil path control system uses a steering vane pump and a steering oil can of a steering system of a commercial vehicle, adopts high-pressure oil output by the steering vane pump as power, and comprises an electromagnetic directional valve and a pneumatic directional valve, wherein oil paths of the steering vane pump, the electromagnetic directional valve and the pneumatic directional valve are sequentially connected through a pipeline, an oil outlet of the pneumatic directional valve is communicated with a lower cavity of a (double-cavity) oil cylinder through a pipeline, and an oil outlet of the pneumatic directional valve is simultaneously communicated with an oil return port of the steering oil can and an upper cavity of the (double-cavity) oil cylinder through a pipeline; the vehicle-mounted air cylinder is communicated with inlets of the first electromagnetic valve and the second electromagnetic valve through an air passage, an outlet of the first electromagnetic valve is communicated with a control port 1 of the pneumatic control reversing valve through the air passage, and an outlet of the second electromagnetic valve is communicated with a control port 2 of the pneumatic control reversing valve through the air passage; and a vehicle body control switch is arranged on an instrument desk in a cab of the commercial vehicle, and is respectively connected with the electromagnetic directional valve, the first electromagnetic valve and the second electromagnetic valve through circuits and used for controlling the electromagnetic directional valve, the first electromagnetic valve and the second electromagnetic valve.
As shown in fig. 2, in order to form a large system with the steering system of the commercial vehicle, the steering system of the commercial vehicle and the hydraulic oil path control system share the electromagnetic directional valve, so the electromagnetic directional valve adopts a 2-position 3-way electromagnetic directional valve.
As shown in fig. 2, in order to realize effective control of the dual-chamber cylinder and optimize the layout of the hydraulic oil path, the pneumatic control reversing valve is preferably a 3-position 3-ventilation control reversing valve with unloading function.
As shown in figure 1, in order to improve the stress condition between the bracket and the front leaf spring assembly and make the movement flexible during lifting, a supporting wheel 6-1 is arranged on the bracket, and the supporting wheel 6-1 is directly contacted with the lower part of the front leaf spring assembly 4.
With reference to fig. 2, the working principle of the 2-position 3-energized electromagnetic directional valve is explained, when the electromagnetic directional valve is not energized, the oil inlet P is communicated with the oil outlet a; when the electromagnetic directional valve is electrified, the oil inlet P is communicated with the oil outlet B.
The working principle of the 3-position 3-way air-controlled reversing valve with the unloading function is explained by combining with the figure 2: when the control port 1 is ventilated and the control port 2 is not ventilated, the oil inlet is communicated with the oil outlet, and the oil return port is closed; when the control port 1 is not ventilated and the control port 2 is ventilated, the oil inlet is communicated with the oil return port, and the oil outlet is communicated with the oil return port; when the control port 1 and the control port 2 are not ventilated, the oil inlet is communicated with the oil return port, and the oil outlet is closed.
The working principle of the present invention is described in detail with reference to fig. 2:
(1) when the vehicle normally runs, the vehicle body control switch is pressed to a free gear, the electromagnetic directional valve is not electrified (the oil inlet P is communicated with the oil outlet A), and the steering system is normally used; the second electromagnetic valve is electrified, the pneumatic control reversing valve controls the 2-port ventilation (the oil inlet is communicated with the oil return port, the oil outlet is communicated with the oil return port), the upper cavity and the lower cavity of the oil cylinder are communicated with the low-pressure oil return port of the steering oil can, and the oil cylinder is in a free state;
(2) when the height of the vehicle body needs to be reduced through a height limiting area, the vehicle body control switch is pressed to a lifting gear, the electromagnetic directional valve is electrified (the oil inlet P is communicated with the oil outlet B), the steering system loses steering power, and in-situ lifting is recommended; the electromagnetic valve 1 is electrified, an opening of the pneumatic control reversing valve 1 is ventilated (an oil inlet is communicated with an oil outlet, an oil return opening is closed), high-pressure oil enters a lower cavity of the oil cylinder, and the plate spring is lifted;
(3) when the height of the vehicle body is reduced to the minimum, the vehicle body control switch is pressed to a middle stop gear, the electromagnetic directional valve is not electrified (the oil inlet P port is communicated with the oil outlet A port), and the steering capacity is recovered; the ports 1 and 2 of the pneumatic control reversing valve are not ventilated (the oil inlet is communicated with the oil return port, the oil outlet is closed), high-pressure oil in the lower cavity of the oil cylinder is held inside, and the vehicle body is always stabilized at the lowest position; at the moment, after the vehicle passes through the height limiting area, the vehicle body control switch is pressed to a free gear, and the vehicle returns to the original height to normally run.
The utility model discloses the new function of realization lies in: lowering the vehicle body to a specific height; the heat dissipation performance of the engine is guaranteed, and the defect that the height-limited vehicle type influences the heat dissipation performance of the engine in the prior art is overcome.
For those skilled in the art, simple combination, equivalent replacement, and further improvement without departing from the technical concept of the present invention shall be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a commercial car reduces automobile body height device which characterized in that: the hydraulic lifting device comprises a hydraulic lifting mechanical device and a hydraulic oil way control system;
the hydraulic lifting mechanical device comprises 2 double-cavity oil cylinders, wherein the 2 double-cavity oil cylinders are symmetrically arranged on the left side and the right side of a frame, the double-cavity oil cylinders are connected between the frame and a front steel plate spring assembly, the head parts of piston rods of the double-cavity oil cylinders are connected with a bracket, and the bracket is supported on the lower part of the front steel plate spring assembly;
the hydraulic oil path control system uses a steering vane pump and a steering oil can of a steering system of a commercial vehicle, adopts high-pressure oil output by the steering vane pump as power, and comprises an electromagnetic directional valve and a pneumatic directional valve, oil paths of the steering vane pump, the electromagnetic directional valve and the pneumatic directional valve are sequentially connected through a pipeline, an oil outlet of the pneumatic directional valve is communicated with a lower cavity of the double-cavity oil cylinder through the pipeline, and an oil outlet of the pneumatic directional valve is simultaneously communicated with an oil return port of the steering oil can and an upper cavity of the double-cavity oil cylinder; the vehicle-mounted air cylinder is communicated with the inlets of the first electromagnetic valve and the second electromagnetic valve through an air passage, the outlet of the first electromagnetic valve is communicated with a control port 1 of the pneumatic control reversing valve through the air passage, and the outlet of the second electromagnetic valve is communicated with a control port 2 of the pneumatic control reversing valve through the air passage; and a vehicle body control switch is arranged on an instrument desk in a cab of the commercial vehicle, and is respectively connected with the electromagnetic directional valve, the first electromagnetic valve and the second electromagnetic valve through circuits and used for controlling the electromagnetic directional valve, the first electromagnetic valve and the second electromagnetic valve.
2. The device for reducing the height of the commercial vehicle body according to claim 1, wherein: the electromagnetic directional valve adopts a 2-position 3-way electromagnetic directional valve.
3. A commercial vehicle body height reducing apparatus according to claim 1 or 2, wherein: the pneumatic control reversing valve is a 3-position 3-ventilation control reversing valve with unloading function.
4. The device for reducing the height of the commercial vehicle body according to claim 1, wherein: and a supporting wheel is arranged on the bracket and is directly contacted with the lower part of the front steel plate spring assembly.
5. The device for reducing the height of the commercial vehicle body according to claim 3, wherein: and a supporting wheel is arranged on the bracket and is directly contacted with the lower part of the front steel plate spring assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020507796.0U CN212022236U (en) | 2020-04-09 | 2020-04-09 | Device for reducing height of commercial vehicle body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020507796.0U CN212022236U (en) | 2020-04-09 | 2020-04-09 | Device for reducing height of commercial vehicle body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212022236U true CN212022236U (en) | 2020-11-27 |
Family
ID=73490788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020507796.0U Active CN212022236U (en) | 2020-04-09 | 2020-04-09 | Device for reducing height of commercial vehicle body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212022236U (en) |
-
2020
- 2020-04-09 CN CN202020507796.0U patent/CN212022236U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11618294B2 (en) | Active-passive dual mode switchable vehicle suspension system and switching method therefor | |
| US9010785B2 (en) | Pneumatic suspension system of a motor vehicle and method | |
| RU2409493C2 (en) | Slide with hydraulic cylinder | |
| CN107379910B (en) | Hydro-pneumatic suspension hydraulic system | |
| EP1819575B1 (en) | Improvements to steering mechanisms | |
| CN102815335A (en) | Steering and braking integrated control system and mineral dumper | |
| CN103009955A (en) | Air-pressure-adjustable type oil gas suspension system, air pressure adjusting method thereof and engineering vehicle | |
| CN112623026B (en) | Steering and suspension adjusting composite system and engineering vehicle | |
| CN111301084A (en) | Hydro-pneumatic suspension system, vehicle and control method of hydro-pneumatic suspension system | |
| CN212022236U (en) | Device for reducing height of commercial vehicle body | |
| CN111483284A (en) | Hydraulic suspension system, lifting control method and multi-axis flat car | |
| CN105539576A (en) | Hydraulic steering system of semitrailer | |
| CN212148295U (en) | Hydraulic suspension system and multi-axis flat car | |
| CN105142940A (en) | Hydraulic suspension system | |
| CN110406513A (en) | A kind of gas braking double brake valve control gas circuit and its commercial vehicle | |
| CN107053986B (en) | Hydraulic control system for oil-gas suspension of five-axis dumper | |
| CN101519026B (en) | Vibration-damping and locking integrating device of chassis suspension fork of vehicle | |
| CN202163273U (en) | Hydraulic system used for driving stabilizer bar of automobile | |
| CN203093658U (en) | Novel oil gas suspension system | |
| CN206107316U (en) | Support shock attenuation control system , hydrostatic steering support shock attenuation control system | |
| CN108657049B (en) | Lifting cooling composite system and vehicle | |
| CN208760742U (en) | Radial type double-cab steering hydraulic system | |
| US7341263B2 (en) | Hydropneumatic suspension | |
| CN104085446A (en) | Vehicle and vehicle steering system thereof | |
| CN207015331U (en) | A kind of cargo vehicle bridge brake |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |