CN106004313A - Air suspension system for middle lifting of semitrailer - Google Patents
Air suspension system for middle lifting of semitrailer Download PDFInfo
- Publication number
- CN106004313A CN106004313A CN201610357820.5A CN201610357820A CN106004313A CN 106004313 A CN106004313 A CN 106004313A CN 201610357820 A CN201610357820 A CN 201610357820A CN 106004313 A CN106004313 A CN 106004313A
- Authority
- CN
- China
- Prior art keywords
- semitrailer
- air spring
- leaf spring
- spring
- axletree
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
- B60G17/04—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics
- B60G17/052—Pneumatic spring characteristics
- B60G17/0523—Regulating distributors or valves for pneumatic springs
- B60G17/0525—Height adjusting or levelling valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G15/00—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
- B60G15/08—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having fluid spring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
- B60G2202/10—Type of spring
- B60G2202/15—Fluid spring
- B60G2202/152—Pneumatic spring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2300/00—Indexing codes relating to the type of vehicle
- B60G2300/04—Trailers
- B60G2300/042—Semi-trailers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2500/00—Indexing codes relating to the regulated action or device
- B60G2500/20—Spring action or springs
- B60G2500/202—Height or leveling valve for air-springs
- B60G2500/2021—Arrangement of valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2500/00—Indexing codes relating to the regulated action or device
- B60G2500/20—Spring action or springs
- B60G2500/204—Pressure regulating valves for air-springs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2800/00—Indexing codes relating to the type of movement or to the condition of the vehicle and to the end result to be achieved by the control action
- B60G2800/90—System Controller type
- B60G2800/91—Suspension Control
- B60G2800/914—Height Control System
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The invention discloses an air suspension system for middle lifting of a semitrailer, and relates to the field of air suspensions. The air suspension system comprises a bearing air spring, a suspension bracket, a guiding leaf spring, dampers, a control system, a lifting air spring and a lifting mechanism, wherein the bearing air spring and the suspension bracket are connected to the bottom of a vehicle frame. The guiding leaf spring is connected to an axle through a connecting assembly, one end of the guiding leaf spring is hinged to the suspension bracket, and the other end of the guiding leaf spring is connected to the bearing air spring. The two ends of each damper are connected to the upper portion of the suspension bracket and the connecting assembly correspondingly. The lifting mechanism is fixed to the middle of the axle in a cantilever mode, and the free end of the lifting mechanism is connected to the bottom of the lifting air spring. According to the air suspension system, under different load conditions, the height of a cargo compartment is constant, the damping effect is good, the semitrailer operates stably, and the transportation requirements of hazardous articles and high-end products are met; and the lifting mechanism can lift the axle in a no-load or light load state of the semitrailer, tyres can be lifted away from the ground, oil consumption is lowered, and tyre abrasion is reduced. In a heavy load state, the axle is landed for bearing, and the bearing capacity of the semitrailer is effectively improved.
Description
Technical field
The present invention relates to air suspension field, be specifically related to the AIRMATIC Dual Control that a kind of semitrailer middle part promotes.
Background technology
Semitrailer refers to that axletree is placed in after vehicle's center of gravity (when the uniform stand under load of vehicle), and equipped with the trailer of the hookup that horizontally or vertically power can be delivered to tractor.Modal semitrailer is exactly trailer, van container transport vehicle.In developed country, semitrailer means of transportation have become as its intercity between the major way of logistics transportation, its overall economic efficiency, technical performance, energy conservation and environmental protection benefit are significantly better than that medium-sized, light truck.Traditional Leaf Spring Suspension with its simple in construction, low price, safeguard easy-to-install feature, past application on semitrailer is relatively broad.But along with the growing of highway transport volume and to vehicle safety, the requirements at the higher level of ride comfort; movement requirement with high-end fields such as precise instrument transport, Nicotiana tabacum L. transport, dangerization transports; the weak point making Leaf Spring Suspension shows day by day, so that the more superior air suspension of performance replaces Leaf Spring Suspension and is increasingly becoming a kind of trend.
Summary of the invention
The technical problem to be solved is, it is provided that a kind of manipulation is steady, safety, can carry out the AIRMATIC Dual Control of axletree lifting time unloaded.
For solving above-mentioned technical problem, the technical solution used in the present invention is: the AIRMATIC Dual Control that a kind of semitrailer middle part promotes, including being connected to the carrying air spring of bottom of frame and hanging bracket, guide leaf spring, amortisseur and control system, it is characterized in that, also include promoting air spring and hoisting mechanism；Described guiding leaf spring middle part is connected on axletree by connecting assembly, and its one end is hinged on described suspension bracket bottom, and the other end is bolted to bottom described carrying air spring；Described amortisseur two ends are connected to hang bracket top and connect on assembly；Described hoisting mechanism is cantilever-shaped to be fixed in the middle part of axletree, and its free end is connected to promote bottom air spring.
Further technical scheme is: described hoisting mechanism is horizontally disposed with, including being bolted to the horizontal backing plate promoted bottom air spring and the U-shaped connecting plate being welded on axletree, it is welded with upper cover plate between described horizontal backing plate and U-shaped connecting plate, both sides, described upper cover plate bottom surface are respectively welded gripper shoe, are provided with the reinforcing plate being welded on bottom U-shaped connecting plate between described gripper shoe.
Further technical scheme is: below described reinforcing plate cross-directional length to horizontal backing plate.
Further technical scheme is: described connection assembly includes, at the upper fixed seat guided between leaf spring and axletree, being positioned at the lower fixed seat below axletree, is located at the foundary weight guided on leaf spring, and the U-bolt being arranged on lower fixed seat；Foundary weight, guiding leaf spring, upper fixed seat and lower fixed seat and axletree are fixed together by described U-bolt.
Further technical scheme is: the described guiding leaf spring axle sleeve hinged with suspension bracket is bolted on described suspension bracket bottom.
Further technical scheme is: described guiding leaf spring is provided with air spring backing plate with carrying air spring junction.
Further technical scheme is: described amortisseur respectively with hang bracket top and be connected the connection of assembly bolt；Described amortisseur is provided with bracket pipe box packing ring with hanging bracket bolt junction.
Further technical scheme is: described carrying air spring and lifting air spring are all the bellows type air springs of quality of rubber materials.
Further technical scheme is: described control system includes air accumulator; it is respectively arranged on pressure protection valve and the filter of described air accumulator front and back end; it is located at the discharging valve of middle part, described air accumulator side; the height adjusting valve being located on axletree; connect described air accumulator, height adjusting valve and carrying air spring and promote the gas path pipe of air spring; and be arranged in gas path pipe pressure-regulating valve, two-bit triplet Pneumatic reversal valve, two five-ways pull reversal valve.
Further technical scheme is: described gas path pipe uses nylon tube.
The present invention realizes unloaded constant with full load loading space constant height by controlling the inflation/deflation of air spring.Air spring is with air as medium, and its rigidity is nonlinear characteristic, well adapting to property, and under different load conditions, loading space constant height is constant, good damping effect, and vehicle operates steadily, and meets the movement requirement of dangerous materials and high-end product；Hoisting mechanism can mention an axletree during or underloading unloaded at vehicle, allows tire liftoff, uses an axle can reduce oil consumption less, reduce the abrasion of tire during underloading.During heavy duty, axletree falls participation carrying, is effectively improved vehicle bearing capacity.
Accompanying drawing explanation
The present invention is described in detail below in conjunction with the accompanying drawings.
Fig. 1 is the plan structure schematic diagram of the present invention；
Fig. 2 is A-A sectional structure schematic diagram in Fig. 1；
Fig. 3 be hoisting mechanism of the present invention look up structural representation；
Fig. 4 is the horizontal cross-sectional structural representation of hoisting mechanism of the present invention；
Fig. 5 is the schematic diagram of gas circuit of the present invention；
In figure, 1-hangs bracket, 2-guides leaf spring, 3-carries air spring, 4-amortisseur, 5-connects assembly, 51-U type bolt, 52-upper fixed seat, 53-lower fixed seat, 54-foundary weight, 6-promotes air spring, 7-hoisting mechanism, the horizontal backing plate of 71-, 72-upper cover plate, 73-U type connecting plate, 74-reinforcing plate, 75-gripper shoe, 8-vehicle frame, 9-axletree, 101-air accumulator, 102-pressure protection valve, 103-filter, 104-discharging valve, 105-height adjusting valve, 106-pressure-regulating valve, 107-two-bit triplet Pneumatic reversal valve, two five-ways of 108-pull reversal valve, 109-gas path pipe.
Detailed description of the invention
Below in conjunction with the accompanying drawings and the present invention is described in further detail by specific embodiment.
As shown in Figure 1-2, the AIRMATIC Dual Control that a kind of semitrailer middle part that the present invention proposes promotes, including the carrying air spring 3 being connected to bottom vehicle frame 8 and suspension bracket 1, guides leaf spring 2, amortisseur 4 and control system, also include promoting air spring 6 and hoisting mechanism 7；Guiding leaf spring 2 middle part and be connected on axletree 9 by connecting assembly 5, its one end is hinged on described suspension bracket 1 bottom, and the other end is bolted to bottom described carrying air spring 3；Amortisseur 4 two ends are connected to hang bracket 1 top and connect on assembly 5；Hoisting mechanism 7 is fixed in the middle part of axletree 9 in cantilever-shaped, and its free end is connected to promote bottom air spring 6.
By control system control carrying air spring 3 and promote air spring 6 inflation/deflation, its height parameter can be adjusted by controlling carrying air spring 3 and the compressed-air actuated amount promoted in air spring 6, then realize unloaded and full load loading space constant height is constant, it is ensured that bodywork height does not changes with load change.Hang bracket 1 and guiding leaf spring 2 forms guiding mechanism, be used for transmitting the moment produced under the longitudinal force between container and axletree, side force and the operating mode such as traveling, braking.Carrying air spring 3 connects container and guides leaf spring 2, is primarily subjected to the pressure that container is downward, and plays the effect of damping.Concussion when amortisseur 4 rebounds after being mainly used to suppression carrying air spring 3 shock-absorbing, absorbs road shocks energy.
As shown in Figure 3-4, hoisting mechanism 7 is horizontally disposed with, including being bolted to the horizontal backing plate 71 promoted bottom air spring 6 and the U-shaped connecting plate 73 being welded on axletree 9, it is welded with upper cover plate 72 between described horizontal backing plate 71 and U-shaped connecting plate 73, both sides, upper cover plate 72 bottom surface are respectively welded gripper shoe 75, are provided with the reinforcing plate 74 being welded on bottom U-shaped connecting plate 73 between gripper shoe 75；Below reinforcing plate 74 cross-directional length extremely horizontal backing plate 71.
Control system includes air accumulator 101; it is respectively arranged on pressure protection valve 102 and the filter 103 of air accumulator 101 front and back end; it is located at the discharging valve 104 of middle part, air accumulator 101 side; the height adjusting valve 105 being located on axletree 9; connect described air accumulator 101, height adjusting valve 105 and carrying air spring 3 and promote the gas path pipe 109 of air spring 6, and the pressure-regulating valve 106, two-bit triplet Pneumatic reversal valve 107 and two five-ways that are arranged in gas path pipe 109 pull reversal valve 108.Control system controls carry air spring 3 and promote the inflation/deflation of air spring 6 by changing the link angle of height adjusting valve 105.
When promoting axletree 9, carrying air spring 3 pressure release is first given by control system, venting, inflating then to lifting air spring 6, promote air spring 6 internal gas pressure and increase, the moment of torsion being applied to axletree 9 increases, the guide plate Huang 2 being fixed together by connecting assembly 5 and axletree 9 is lifted up, then guiding leaf spring 2 drives axletree 9 to be lifted up, and makes tire leave ground, completes lifting action.During release axletree 9, first being given by control system and promote air spring 6 pressure release, inflate then to carrying air spring 3, make axletree fall, carrying air spring 3 is inflated complete, reaches bearing requirements.
Preferably, connect assembly 5 and include, at the upper fixed seat 52 guided between leaf spring 2 and axletree 9, being positioned at the lower fixed seat 53 below axletree 9, be located at the foundary weight 54 guided on leaf spring 2, and the U-bolt 51 being arranged on lower fixed seat 53；Foundary weight 54, guiding leaf spring 2, upper fixed seat 52 and lower fixed seat 53 and axletree 9 are fixed together by U-bolt 51.Multiple unit construction is had to connect assembly firm and reliable connection.
Preferably, the axle sleeve guiding leaf spring 2 hinged with described suspension bracket is bolted on described suspension bracket 1 bottom.Owing to during using, axle sleeve has abrasion, bolt connects makes axle sleeve detachable, easy to maintenance.
Preferably, guide leaf spring 2 and be provided with air spring backing plate with carrying air spring 3 junction.Play certain cushioning effect.
Preferably, amortisseur 4 respectively with hang bracket 1 top and be connected assembly 5 bolt connection；Amortisseur 4 is provided with bracket pipe box packing ring with hanging bracket 1 bolt junction, can play cushioning effect.
Preferably, carrying air spring 3 and lifting air spring 6 are all the bellows type air springs of quality of rubber materials.Use the quality of rubber materials of high-quality, elastic and good damping effect.
Finally should be noted that: above example is only in order to illustrate that technical scheme is not intended to limit；Although being described in detail the present invention with reference to preferred embodiment, those of ordinary skill in the field are it is understood that still can modify to the detailed description of the invention of the present invention or portion of techniques feature is carried out equivalent；Without deviating from the spirit of technical solution of the present invention, it all should be contained in the middle of the technical scheme scope that the present invention is claimed.
Claims (10)
1. the AIRMATIC Dual Control that a semitrailer promotes with middle part, including being connected to the carrying air spring (3) of vehicle frame (8) bottom and hanging bracket (1), guide leaf spring (2), amortisseur (4) and control system, it is characterized in that, also include promoting air spring (6) and hoisting mechanism (7)；Described guiding leaf spring (2) one end is hinged on described suspension bracket (1) bottom, and the other end is bolted to described carrying air spring (3) bottom, and middle part is connected on axletree (9) by connecting assembly (5)；Described amortisseur (4) two ends are connected to hang bracket (1) top and connect on assembly (5)；Described hoisting mechanism (7) is fixed on axletree (9) middle part in cantilever-shaped, and its free end is connected to promote air spring (6) bottom.
The AIRMATIC Dual Control that a kind of semitrailer middle part the most according to claim 1 promotes, it is characterized in that, described hoisting mechanism (7) is horizontally disposed with, including being bolted to the horizontal backing plate (71) promoting air spring (6) bottom and the U-shaped connecting plate (73) being welded on axletree (9), upper cover plate (72) it is welded with between described horizontal backing plate (71) and U-shaped connecting plate (73), described upper cover plate (72) both sides, bottom surface are respectively welded gripper shoe (75), the reinforcing plate (74) being welded on U-shaped connecting plate (73) bottom it is provided with between described gripper shoe (75).
The AIRMATIC Dual Control that a kind of semitrailer middle part the most according to claim 2 promotes, it is characterised in that described reinforcing plate (74) cross-directional length to horizontal backing plate (71) lower section.
The AIRMATIC Dual Control that a kind of semitrailer middle part the most according to claim 1 promotes, it is characterized in that, described connection assembly (5) includes being positioned at the upper fixed seat (52) guided between leaf spring (2) and axletree (9), it is positioned at the lower fixed seat (53) of axletree (9) lower section, it is located at the foundary weight (54) guided on leaf spring (2), and the U-bolt (51) being arranged on lower fixed seat (53)；Foundary weight (54), guiding leaf spring (2), upper fixed seat (52) and lower fixed seat (53) and axletree (9) are fixed together by described U-bolt (51).
The AIRMATIC Dual Control that a kind of semitrailer middle part the most according to claim 1 promotes, it is characterised in that the axle sleeve that described guiding leaf spring (2) is hinged with described suspension bracket (1) is bolted on described suspension bracket (1) bottom.
The AIRMATIC Dual Control that a kind of semitrailer middle part the most according to claim 1 promotes, it is characterised in that described guiding leaf spring (2) is provided with air spring backing plate with carrying air spring (3) junction.
A kind of semitrailer middle part the most according to claim 1 promote AIRMATIC Dual Control, it is characterised in that described amortisseur (4) respectively with hang bracket (1) top and be connected assembly (5) bolt connection；Described amortisseur (4) is provided with bracket pipe box packing ring with hanging bracket (1) bolt junction.
The AIRMATIC Dual Control that a kind of semitrailer middle part the most according to claim 1 promotes, it is characterised in that described carrying air spring (3) and lifting air spring (6) are all the bellows type air springs of quality of rubber materials.
The AIRMATIC Dual Control that a kind of semitrailer middle part the most according to claim 1 promotes, it is characterized in that, described control system includes air accumulator (101), it is respectively arranged on pressure protection valve (102) and the filter (103) of described air accumulator (101) front and back end, it is located at the discharging valve (104) of described air accumulator (101) middle part, side, the height adjusting valve (105) being located on axletree (9), connect described air accumulator (101), height adjusting valve (105) and carrying air spring (3) and lifting air spring (6) gas path pipe (109), and the pressure-regulating valve (106) being arranged in gas path pipe (109), two-bit triplet Pneumatic reversal valve (107) and two five-ways pull reversal valve (108).
The AIRMATIC Dual Control that a kind of semitrailer middle part the most according to claim 9 promotes, it is characterised in that described gas path pipe (109) uses nylon tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610357820.5A CN106004313B (en) | 2016-05-26 | 2016-05-26 | A kind of AIRMATIC Dual Control that the automobile-used middle part of semi-mounted is promoted |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610357820.5A CN106004313B (en) | 2016-05-26 | 2016-05-26 | A kind of AIRMATIC Dual Control that the automobile-used middle part of semi-mounted is promoted |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106004313A true CN106004313A (en) | 2016-10-12 |
| CN106004313B CN106004313B (en) | 2018-11-30 |
Family
ID=57094183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610357820.5A Active CN106004313B (en) | 2016-05-26 | 2016-05-26 | A kind of AIRMATIC Dual Control that the automobile-used middle part of semi-mounted is promoted |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106004313B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107901720A (en) * | 2017-12-13 | 2018-04-13 | 眉山中车物流装备有限公司 | A kind of automobile frame hangs air bag draw bail |
| CN110194039A (en) * | 2019-06-27 | 2019-09-03 | 湖北中尔车轴有限公司 | Damper air suspension is set in one kind |
| CN111055646A (en) * | 2019-12-16 | 2020-04-24 | 扬州维克得瑞科技研发有限公司 | Damping device for semitrailer and damping method thereof |
| CN111645475A (en) * | 2019-08-27 | 2020-09-11 | 西华大学 | Control method of variable-stiffness auxiliary device of truck leaf spring suspension |
| WO2021072854A1 (en) * | 2019-10-15 | 2021-04-22 | 中车唐山机车车辆有限公司 | Traveling system of trolleybus, and trolleybus |
| WO2021072856A1 (en) * | 2019-10-15 | 2021-04-22 | 中车唐山机车车辆有限公司 | Trolleybus travel system and trolleybus |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2165500A (en) * | 1984-10-13 | 1986-04-16 | Rubery Owen Rockwell Ltd | Vehicle with air suspension |
| CN201333911Y (en) * | 2008-02-01 | 2009-10-28 | 湖北大力专用汽车制造有限公司 | Semi-trailer walking mechanism with air floating bridge |
| CN201552998U (en) * | 2009-11-06 | 2010-08-18 | 上海锦奔汽车系统有限公司 | Axle lifting mechanism for semitrailer non-independent type air suspension structure |
| CN204472483U (en) * | 2014-12-18 | 2015-07-15 | 佛山市永力泰车轴有限公司 | Trailer car shaft lift system |
-
2016
- 2016-05-26 CN CN201610357820.5A patent/CN106004313B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2165500A (en) * | 1984-10-13 | 1986-04-16 | Rubery Owen Rockwell Ltd | Vehicle with air suspension |
| CN201333911Y (en) * | 2008-02-01 | 2009-10-28 | 湖北大力专用汽车制造有限公司 | Semi-trailer walking mechanism with air floating bridge |
| CN201552998U (en) * | 2009-11-06 | 2010-08-18 | 上海锦奔汽车系统有限公司 | Axle lifting mechanism for semitrailer non-independent type air suspension structure |
| CN204472483U (en) * | 2014-12-18 | 2015-07-15 | 佛山市永力泰车轴有限公司 | Trailer car shaft lift system |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107901720A (en) * | 2017-12-13 | 2018-04-13 | 眉山中车物流装备有限公司 | A kind of automobile frame hangs air bag draw bail |
| CN110194039A (en) * | 2019-06-27 | 2019-09-03 | 湖北中尔车轴有限公司 | Damper air suspension is set in one kind |
| CN111645475A (en) * | 2019-08-27 | 2020-09-11 | 西华大学 | Control method of variable-stiffness auxiliary device of truck leaf spring suspension |
| WO2021072854A1 (en) * | 2019-10-15 | 2021-04-22 | 中车唐山机车车辆有限公司 | Traveling system of trolleybus, and trolleybus |
| WO2021072856A1 (en) * | 2019-10-15 | 2021-04-22 | 中车唐山机车车辆有限公司 | Trolleybus travel system and trolleybus |
| CN111055646A (en) * | 2019-12-16 | 2020-04-24 | 扬州维克得瑞科技研发有限公司 | Damping device for semitrailer and damping method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106004313B (en) | 2018-11-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106004313A (en) | Air suspension system for middle lifting of semitrailer | |
| US8047551B2 (en) | Multi-stage height control valve including position sensitive pilot signal and pressure boost for vehicle air springs | |
| WO2015067104A1 (en) | Leaf spring suspension system with air bag lifting axle structure and vehicle having same | |
| CN106275112B (en) | heavy equipment transport vechicle | |
| US9517674B2 (en) | Pneumatic control system for a heavy-duty vehicle | |
| CN201784425U (en) | Front axle of large-size electric-wheel self-dumping mining truck | |
| CN202130500U (en) | Quick-release cargo truck | |
| US20170015372A1 (en) | Automatic auxiliary axle control system | |
| CN107584981A (en) | Equalizing suspension system axle lift mechanism after a kind of heavy-duty commercial vehicle | |
| CN204451911U (en) | Air cushioning independent suspension type pulls caravan chassis | |
| US20030127819A1 (en) | Air spring vehicle suspension with roll control and negligible creep | |
| CN107813670A (en) | Mechanical control system for air suspension of double-tire lifting bridge | |
| CN109050412A (en) | Container vehicle semitrailer | |
| CN201140657Y (en) | Double-purpose vehicle for road and railway | |
| CN201030814Y (en) | Glass transport semi-trailer | |
| CN206106864U (en) | A rear axle lifts air suspension for heavy hauler | |
| CN208978743U (en) | Container vehicle semitrailer | |
| CN102815247B (en) | A kind of quarry tipper | |
| CN108621733B (en) | Vehicle suspension device and vehicle comprising same | |
| CN206155066U (en) | Freight train and linkage structure of transaxle and follow -up bridge thereof | |
| CN207241347U (en) | Equalizing suspension system axle lift mechanism after a kind of heavy-duty commercial vehicle | |
| CN209051263U (en) | A kind of welded type semitrailer airsuspension system | |
| CN209051261U (en) | A kind of semitrailer airsuspension system | |
| CN212796442U (en) | Trailer capable of swinging and suspending air bag | |
| CN206264742U (en) | The automobile-used back axle lifting air suspension apparatus of heavy type traction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |