Cab height control system and vehicle
The combination of airbags and height adjustment components solves the problems of convenience and reliability in adjusting the height of commercial vehicle cabs, enabling flexible and reliable adjustment of cab height to meet temporary obstacle clearance needs and reduce energy consumption.
Patent Information
- Application Number
- CN202520230873.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-13
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2035-02-13
AI Technical Summary
Existing commercial vehicle cab height adjustment devices lack convenience, flexibility, and reliability, making it difficult to flexibly and reliably achieve active adjustment of the cab air suspension height. This is especially problematic when encountering high-altitude obstacles such as bridges and height restriction bars, increasing transportation costs and making it difficult to maintain a low position for extended periods.
The system employs a combination of airbags, height adjustment components, and exhaust valves. Through the cooperation of the height adjustment valve, dual-way low-select valve, and parking handbrake valve, it achieves flexible adjustment and long-term maintenance of the cab height, simplifies pipeline connections, and reduces the number of parts.
The driver can temporarily control the cab height via the exhaust switch, and the parking brake valve can keep the cab in a low position for a long time without the need for prolonged power supply, saving energy, simplifying piping, ensuring safety and effectiveness, and reducing vehicle costs.
Smart Images
Figure CN223672642U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of vehicle, especially cab height control system and vehicle. BACKGROUND
[0002] With the rapid development of economy, the logistics transportation industry plays a more and more important role, and commercial vehicles, as the main tool of logistics transportation, occupy an irreplaceable position. The road conditions of commercial vehicles are complex, and during the transportation and driving process, it is inevitable to encounter high obstacles such as bridge holes, height limit rods, roadblocks, etc. The height of the cab of heavy-duty trucks is relatively high, and when the child car or vehicle needs to be rescued, higher requirements are put forward for the passability of the height of the vehicle.
[0003] The height of the cab air suspension of the commercial vehicle is generally set during the factory stage, and the height adjusting valve will automatically adjust when the driver jumps, which cannot be manually intervened. In this case, high obstacles such as bridge holes, height limit rods, roadblocks, etc. will choose to detour, increasing the transportation cost.
[0004] The cab height adjusting device widely used in the market at present is mainly mechanical, the pipeline is complex and needs to be operated off the vehicle, and part of the temporary height adjustment cannot keep the height of the cab at the lowest position for a long time. In addition, when the child and parent cars or vehicles encounter failures and need to be transported for a long distance, the driver will leave the vehicle in the parked state, and the towed vehicle needs to be powered off, so it is difficult to keep it in the low position.
[0005] Therefore, how to conveniently, flexibly and reliably realize the active adjustment of the suspension height of the cab air suspension is an important issue to be solved at present. UTILITY MODEL CONTENTS
[0006] The utility model provides a kind of cab height control system and vehicle to solve the defects of the convenience, flexibility and reliability of the height adjustment of the cab in prior art, which can conveniently, flexibly and reliably realize the active adjustment of the suspension height of the cab air suspension.
[0007] The utility model provides a kind of cab height control system, comprising:
[0008] Air bag, provided with multiple and respectively with the gas source is connected;
[0009] Height adjusting assembly is arranged between the gas source and the air bag, which comprises a height adjusting valve and a double-pass low selection valve;The double-pass low selection valve is provided with two gas inlets and one gas outlet, one of the gas inlets of the double-pass low selection valve is connected with the gas source through the height adjusting valve, and the gas outlet is connected with the air bag;The height adjusting valve is a multi-position valve, and the gas outlet of the double-pass low selection valve is suitable for conducting with the gas inlet with lower pressure itself;
[0010] An exhaust valve, an air inlet of the exhaust valve is connected to the air source through the hand brake valve, an air outlet of the exhaust valve is connected to another air inlet of the double-way low selection valve, and an exhaust outlet is connected to the exhaust switch, and the air outlet of the exhaust valve is switchably communicated with the air inlet or the exhaust outlet of the exhaust valve.
[0011] According to the cab height control system, the height adjusting valve is provided with an air inlet, an air outlet and an exhaust outlet, and is provided with three switchable gears;
[0012] The air inlet of the height adjusting valve is connected to the air source, and the air outlet is connected to the air inlet of the double-way low selection valve.
[0013] In the first gear, the air inlet and the air outlet of the height adjusting valve are communicated; in the second gear, the air outlet and the exhaust outlet of the height adjusting valve are communicated; and in the third gear, the air inlets and the air outlet of the height adjusting valve are closed.
[0014] According to the cab height control system, the gears of the height adjusting valve are controlled by an adjusting rod, one end of the adjusting rod is connected to the cab suspension, and the other end is connected to the height adjusting valve.
[0015] According to the cab height control system, the exhaust switch is a single-gear self-resetting flap switch.
[0016] According to the cab height control system, the exhaust valve is a two-position three-way electromagnetic valve, and the flap switch is electrically connected to the electromagnetic valve.
[0017] According to the cab height control system, the air path distribution module is further included.
[0018] The air path distribution module is provided with an air inlet and a plurality of air outlets, the air inlet of the air path distribution module is suitable for being connected to the air source, and the plurality of air outlets are suitable for being connected to different air bags.
[0019] According to the cab height control system, the air inlet of the exhaust valve is connected to the air outlet of the air path distribution module through the hand brake valve.
[0020] According to the cab height control system, the air bag is provided with four air bags; in the direction of travel, two air bags are located at the rear side of the cab, and two air bags are located at the front side of the cab.
[0021] According to the cab height control system, the two air bags located at the rear side are adjusted in height by the independently arranged height adjusting assembly; and the two air bags located at the front side share one adjusting assembly for adjusting the height.
[0022] The utility model also provides a vehicle, including any one of the cab height control system.
[0023] The cab height control system and the vehicle provided by the utility model can realize temporary control of the height of the cab through the exhaust switch, thereby meeting the demand of temporary passing through the height-limited area or the bridge hole, in addition, the cab can be kept in the low position for a long time only by the parking hand brake valve, the exhaust valve does not need to be powered for a long time, energy is saved, the number of parts is small, pipeline connection is simple, the process of driving and parking braking of the whole vehicle is not affected, it is safe and effective, the cost of the vehicle changes little, thereby the active adjustment of the air suspension height of the cab can be conveniently, flexibly and reliably realized. BRIEF DESCRIPTION OF DRAWINGS
[0024] In order to more clearly illustrate the technical scheme in the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained without creative labor.
[0025] Fig. 1 It is the structure schematic diagram of the cab height control system provided by the utility model embodiment.
[0026] Fig. 2 It is the structure schematic diagram of the height regulating valve provided by the utility model embodiment.
[0027] Fig. 3 It is the structure schematic diagram of the exhaust valve provided by the utility model embodiment.
[0028] Reference signs:
[0029] 10, air bag; 11, height regulating assembly; 110, height regulating valve; 111, double-way low selection valve; 12, exhaust valve; 13, parking hand brake valve; 14, exhaust switch; 15, gas distribution module. DETAILED DESCRIPTION
[0030] In order to make the purpose, technical scheme and advantages of the utility model more clear, the following will combine the drawings in the utility model, and the technical scheme in the utility model is clearly and completely described, obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.
[0031] In order to better understand the cab height control system and vehicle provided by the embodiments of the present application, the application background thereof is introduced first. The road conditions of commercial vehicles are complex, and during the transportation and driving process, high obstacles such as bridge holes, height limit rods and roadblocks are inevitably encountered. The height of the cab of a heavy-duty truck is relatively high, and higher requirements are put forward for the passability of the height of the vehicle when the vehicle or the vehicle encounters a fault and needs to be rescued by a carrier vehicle.
[0032] The cab height adjusting device widely used in the market at present is mainly mechanical, for example, the lifting of the cab is realized by lifting the bracket at the bottom of the cab through a hydraulic cylinder. This way is complex in pipeline and needs to be operated off the vehicle, and part of the temporary height adjustment cannot keep the height of the cab at the lowest position for a long time. In addition, when the vehicle or the vehicle encounters a fault and needs to be transported for a long distance by a carrier vehicle, the driver will leave the vehicle in the parked state, and the carrier vehicle needs to be powered off, so it is difficult to keep it at a low position.
[0033] In view of the above problems, the embodiments of the present application provide a cab height control system and vehicle, which can conveniently, flexibly and reliably realize active adjustment of the air suspension suspension height of the cab.
[0034] The cab height control system and vehicle of the present application will be described below. Figs. 1-3
[0035] Referring to Figs. 1 to 3 A cab height control system, comprising an air bag 10, a height adjusting assembly 11 and an exhaust valve 12; wherein the air bag 10 is provided with multiple air inlets and is connected with an air source respectively; the height adjusting assembly 11 is correspondingly arranged between the air source and the air bag 10, and comprises a height adjusting valve 110 and a double-pass low selection valve 111, wherein the double-pass low selection valve 111 is provided with two air inlets and one air outlet, one of the air inlets of the double-pass low selection valve 111 is connected with the air source through the height adjusting valve 110, and the air outlet is connected with the air bag 10; the height adjusting valve 110 is a multi-position valve suitable for controlling the height of the air bag 10, and the air outlet of the double-pass low selection valve 111 is suitable for being connected with the air inlet with lower pressure. The air inlet of the exhaust valve 12 is connected to the air source through a parking hand brake valve 13, the air outlet is connected to the other air inlet of the double-pass low selection valve 111, the exhaust port is connected with an exhaust switch 14, and the air outlet of the exhaust valve 12 is switchably connected with the air inlet or the exhaust port.
[0036] In actual application, when the cab is at the design height, the height adjusting valve 110 is at the balance position, and the air pressure of the air bag 10 is kept. When the vehicle is running normally, the cab is jolted by rough road or the load in the cab is increased, the height of the cab is reduced, the air source is controlled to inflate the air bag 10 through the height adjusting valve 110, and the height of the cab is increased to restore the design height. Conversely, when the load in the cab is reduced, the height adjusting valve 110 works, the air bag 10 of the cab is deflated, and the height of the cab is restored to the design height.
[0037] During normal driving, the parking hand brake valve 13 is in the release state, the inlet and outlet of the exhaust valve 12 are communicated, the pressure of the two air inlets of the double-way low selection valve 111 is the air source pressure, and the height of the cab is controlled by the height adjusting valve 110. When the vehicle passes through a road barrier such as a height limit section or a bridge hole, the exhaust switch 14 is opened, the air outlet of the double-way low selection valve 111 is communicated with the air outlet of the exhaust valve 12, at this time, the air pressure of the air inlet connected with the exhaust valve 12 of the double-way low selection valve 111 is 0, the pressure of the air inlet connected with the height adjusting valve 110 is the air source pressure, the double-way low selection valve 111 acts, the air bag 10 of the cab suspension is deflated through the air outlet of the exhaust valve 12, and the height of the cab is reduced. After passing through the height limiting position, the exhaust switch 14 is closed, the exhaust valve 12 is reset to communicate the air inlet and the air outlet thereof, at this time, the pressure of the two air inlets of the double-way low selection valve 111 is the air source pressure, the height of the cab is returned to the height adjusting valve 110, the height adjusting valve 110 controls the air source to inflate the air bag 10, and the cab restores to the normal height.
[0038] When the vehicle is in the trucking or long-distance transportation working condition, the trucked vehicle is in the parking state, at this time, the parking hand brake valve 13 is in the parking state and cuts off the passage of the air source and the exhaust valve 12, without opening the exhaust switch 14, the gas in the exhaust valve 12 is discharged through the air inlet and the parking hand brake valve 13, the air pressure of the air inlet connected with the exhaust valve 12 of the double-way low selection valve 111 is 0, the pressure of the air inlet connected with the height adjusting valve 110 is the air source pressure, the double-way low selection valve 111 acts, the air bag 10 of the cab suspension is deflated through the exhaust valve 12, at this time, the exhaust valve 12 does not need to be powered for a long time, and the vehicle can be kept in the low position for a long time.
[0039] During driving, the parking hand brake valve 13 is in the release state, the air source is communicated with the air inlet of the exhaust valve 12, at this time, the pressure of the two air inlets of the double-way low selection valve 111 is the air source pressure, the height of the cab is returned to the height adjusting valve 110, the height adjusting valve 110 controls the air source to inflate the air bag 10, and the cab restores to the normal height.
[0040] Compared with the related art, the driver can realize temporary control of the cab height through the exhaust switch 14, thereby meeting the requirement of temporarily passing through the height-limiting area or the bridge hole of the vehicle, in addition, the cab can be kept in the low position for a long time only by means of the parking hand brake valve 13, without energizing the exhaust valve 12 for a long time, thereby saving energy, and the number of parts is small, the pipeline connection is simple, the driving and parking brake processes of the vehicle are not affected, it is safe and effective, and the vehicle cost changes little, thereby conveniently, flexibly and reliably realizing active adjustment of the suspension height of the cab air suspension.
[0041] It should be pointed out here that the specific number and arrangement position of the air bags 10 and the like can be designed according to actual requirements, as long as the smooth adjustment of the cab height can be met. The air source can specifically adopt the vehicle air source, the vehicle air source is a crucial component part in the existing vehicle, and can provide compressed air for various functions of the vehicle, and the specific component parts of the vehicle air source can refer to the prior art, and will not be described herein.
[0042] In an embodiment of the utility model, in order to more conveniently distribute the compressed gas provided by the air source to each air bag 10, the cab height control system further comprises a gas distribution module 15, specifically, the gas distribution module 15 comprises an air inlet and a plurality of air outlets, wherein the air inlet of the gas distribution module 15 is suitable for connecting the air source, and different air outlets are used for connecting different air bags 10, thereby distributing the gas to different air bags 10, and the air inlet of the exhaust valve 12 is connected to the vehicle air source through the parking hand brake valve 13, and the pipeline can be simplified through the gas distribution module 15.
[0043] With reference to Fig. 2 In an embodiment of the utility model, in order to conveniently adjust the height of the air bag 10, the height adjustment valve 110 adopts a three-position three-way valve, which is provided with an air inlet, an air outlet and an exhaust port, and is provided with three switchable gears, the air inlet of the height adjustment valve 110 is connected with the air source through the gas distribution module 15, the air outlet is connected with the air inlet of the double-way low selection valve 111, under the first gear, the air inlet and the air outlet of the height adjustment valve 110 are conducted, under the second gear, the air outlet and the exhaust port of the height adjustment valve 110 are conducted, and under the third gear, the air inlets of the height adjustment valve 110 are closed.
[0044] Specifically, when the height of the cab is at the low position, the height adjusting valve 110 is switched to the first gear, the air inlet and the air outlet of the height adjusting valve 110 are communicated, so that the air bag 10 is filled with air to raise the cab. When the height of the cab is at the high position, the height adjusting valve 110 is switched to the second gear, the air outlet and the exhaust port of the height adjusting valve 110 are communicated, and the air bag 10 is deflated to lower the cab. When the height of the cab is at the middle position, the height adjusting valve 110 is switched to the third gear, and the air ports of the height adjusting valve 110 are closed, so as to maintain the height of the cab.
[0045] It should be noted that the specific structure of the height adjusting valve 110 can refer to the three-position three-way valve in the prior art, and in the embodiment of the present application, only the function of the three-position three-way valve is used to control the height of the air bag 10, but the structure and working principle are not changed, therefore, the specific structure of the height adjusting valve 110 is not described in detail in the embodiment of the present application.
[0046] In order to facilitate the control of the height adjusting valve 110 and thus the control of the height of the air bag 10, in an embodiment of the present application, the height adjusting valve 110 is controlled by an adjusting rod, one end of the adjusting rod is connected with the cab suspension, and the other end is connected with the height adjusting valve 110.
[0047] Specifically, the adjusting rod connected with the cab suspension can collect the current height of the cab, and control the height adjusting valve 110 based on the current height of the cab, when the cab is at the high position, the adjusting rod controls the height adjusting valve 110 to switch to the first gear, when the cab is at the low position, the adjusting rod controls the height adjusting valve 110 to switch to the second gear, and when the cab is at the middle position, the adjusting rod controls the height adjusting valve 110 to switch to the third gear.
[0048] In some optional embodiments, the adjusting rod and the cab suspension and the height adjusting valve 110 can be mechanically connected or electrically connected, and the specific connection mode can be set according to actual needs, which is not limited in the embodiment of the present application.
[0049] Referring to Fig. 3 In an embodiment of the present application, the exhaust valve 12 is a two-position three-way electromagnetic valve, and the exhaust switch 14 is a single-gear self-resetting flap switch, and the flap switch is electrically connected with the exhaust valve 12.
[0050] Specifically, the flap switch can be arranged on the instrument desk in the cab, and the driver can control the height of the air bag 10 during driving, which is convenient to operate. The flap switch and the exhaust valve 12 can be mechanically connected or electrically connected, and the specific connection mode can be designed flexibly according to actual needs.
[0051] It should be noted that the parking hand brake valve 13 is an important part of the vehicle parking brake system, and the whole parking system mainly comprises a vehicle air source processing unit, a parking air cylinder, the parking hand brake valve 13, a relay valve and a parking air chamber. During normal driving, the handle of the parking hand brake valve 13 is in a release state, at this time, the whole parking system pipeline is in a normal air state, the parking air chamber is inflated, the parking spring is compressed, and the parking air chamber is in a non-parking state. When it is necessary to switch the parking state, the driver operates the handle of the parking hand brake valve 13 to pull down the handle to the locking position, the gas in the original parking air chamber is discharged through the exhaust port of the relay valve, the parking spring is released, and the parking state is formed and maintained. That is to say, in the embodiment of the utility model, when the vehicle is in the parking state, the gas in the air bag 10 can be discharged together with the gas in the original parking chamber through the double-way low selection valve 111, the exhaust valve 12 and the parking hand brake valve 13, so that the cab is kept at a low position.
[0052] Of course, the above description is only part of the structure and principle of the parking system, and not all, and the more specific structure and working principle of the parking system can refer to the prior art, and the embodiment of the utility model is not described here.
[0053] In an embodiment of the utility model, the parking hand brake valve 13 is controlled by the parking handle.
[0054] As a specific embodiment of the utility model, the air bag 10 is provided with four air bags, and in the driving direction of the vehicle, two air bags 10 are located at the rear side of the cab, and two air bags 10 are located at the front side of the cab, so as to realize stable adjustment of the height of the cab.
[0055] In an embodiment of the utility model, the two air bags 10 located at the rear side of the cab are adjusted in height by the independently arranged height adjusting assembly 11, and the two air bags 10 located at the front side of the cab share one adjusting assembly to adjust the height. Thus, the number of components is reduced and the cost is saved on the premise of realizing stable adjustment of the height of the cab.
[0056] Of course, in another embodiment of the utility model, each air bag 10 can be adjusted in height by an independent height adjusting assembly 11 to improve the flexibility of the height adjustment of the cab.
[0057] It can be understood that, without contradiction, a person skilled in the art can combine and combine different embodiments or examples described in the specification and the features of different embodiments or examples.
[0058] The vehicle provided by the utility model is described below, and the vehicle described below can be correspondingly referred to the cab height control system described above.
[0059] A vehicle comprises the cab height control system provided by any of the above embodiments.
[0060] The driver can realize temporary control of the cab height through the exhaust switch 14, thereby meeting the demand of temporary passing of the vehicle through the height limiting area or the bridge hole, in addition, the cab can be kept in the low position for a long time only by means of the hand brake valve 13, the exhaust valve 12 does not need to be powered for a long time, energy is saved, the number of parts is small, pipeline connection is simple, the driving and parking brake process of the vehicle is not affected, it is safe and effective, the vehicle cost changes little, thereby the active adjustment of the air suspension suspension height of the cab can be conveniently, flexibly and reliably realized.
[0061] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims
1. A cab height control system characterized by, The application relates to a cab height control system. The cab height control system comprises: air bags (10) connected with an air source; a height adjustment assembly (11) arranged between the air source and the air bags (10), which comprises a height adjustment valve (110) and a double-pass low selection valve (111); the double-pass low selection valve (111) is provided with two air inlets and one air outlet, one of the air inlets of the double-pass low selection valve (111) is connected with the air source through the height adjustment valve (110), the air outlet is connected with the air bag (10), the height adjustment valve (110) is a multi-position valve, and the air outlet of the double-pass low selection valve (111) is suitable for being in communication with the air inlet with lower pressure; an exhaust valve (12) is connected with the air source through a parking hand brake valve (13), the air outlet of the exhaust valve (12) is connected with the other air inlet of the double-pass low selection valve (111), and the exhaust valve (12) is connected with an exhaust switch (14); the air outlet of the exhaust valve (12) is switchably in communication with the air inlet or the exhaust outlet of the exhaust valve (12). The height adjustment valve (110) is provided with an air inlet, an air outlet and an exhaust outlet, and is provided with three switchable positions. The air inlet of the height adjustment valve (110) is connected with the air source, and the air outlet is connected with the air inlet of the double-pass low selection valve (111).
2. The cab height control system of claim 1, wherein, In the first position, the air inlet and the air outlet of the height adjustment valve (110) are in communication; in the second position, the air outlet and the exhaust outlet of the height adjustment valve (110) are in communication; and in the third position, the air inlet, the air outlet and the exhaust outlet of the height adjustment valve (110) are closed. The position of the height adjustment valve (110) is controlled by an adjusting rod, one end of the adjusting rod is connected with a cab suspension, and the other end is connected with the height adjustment valve (110). The exhaust switch (14) is a single-position self-resetting flap switch.
3. The cab height control system of claim 2, wherein, The exhaust valve (12) is a two-position three-way electromagnetic valve, the flap switch is electrically connected with the electromagnetic valve.
4. The cab height control system according to any one of claims 1 to 3, characterized in that The cab height control system further comprises an air path distribution module.
5. The cab height control system of claim 4, wherein, The air path distribution module is provided with an air inlet and multiple air outlets, the air inlet of the air path distribution module is suitable for being connected with the air source, and the multiple air outlets are suitable for being connected with different air bags (10).
6. The cab height control system of claim 4, wherein, The air inlet of the exhaust valve (12) is connected with the air outlet of the air path distribution module through the parking hand brake valve (13). The cab height control system is provided with four air bags (10), two of which are arranged at the rear side of the cab and the other two are arranged at the front side of the cab.
7. The cab height control system of claim 6, wherein, The two air bags (10) at the rear side are adjusted in height by the independently arranged height adjustment assemblies (11), and the two air bags (10) at the front side are adjusted in height by one height adjustment assembly.
8. The cab height control system of claim 1, wherein, The cab height control system comprises the height adjustment assembly (11) according to any one of claims 1-9.
9. The cab height control system of claim 8, wherein, 10. A vehicle characterized by comprising: