CN214606972U - Device for adjusting height of air bag of air suspension of double drive axle and operation machine - Google Patents
Device for adjusting height of air bag of air suspension of double drive axle and operation machine Download PDFInfo
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- CN214606972U CN214606972U CN202120336772.8U CN202120336772U CN214606972U CN 214606972 U CN214606972 U CN 214606972U CN 202120336772 U CN202120336772 U CN 202120336772U CN 214606972 U CN214606972 U CN 214606972U
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Abstract
The utility model provides a device and an operation machinery of adjusting double drive axle air suspension gasbag height. The utility model provides a adjust device of tandem air suspension gasbag height, including the coupling mechanism of a pair of relative setting, every coupling mechanism is used for being connected with operation machinery's first transaxle and second transaxle respectively, and every coupling mechanism includes: two ends of the first connecting rod are respectively used for being connected with the first drive axle and the second drive axle; one end of the connecting rod assembly is fixedly connected with the middle part of the first connecting rod, and the other end of the connecting rod assembly is provided with an angle sensor; and the control assembly is electrically connected with the angle sensor and is used for controlling the inflation or the deflation of an air suspension air bag of the working machine according to signals sent by the angle sensor. The utility model discloses a adjust device of tandem air suspension gasbag height, it is only half original to adjust the automobile body height, has reduced the jack-up height of air suspension gasbag, has avoided air suspension gasbag pressure too big.
Description
Technical Field
The utility model relates to an air suspension technical field especially relates to a adjust device and operation machinery of tandem air suspension gasbag height.
Background
At present, the electric control suspension of a double-drive-axle automobile generally adopts single-axle single-point control or single-axle multipoint control. Generally, single-axle single-point control is realized in three forms, namely that the connecting vertical rods of the electric control suspension height sensor are respectively arranged on the left side of the single axle, the right side of the single axle or the middle of the single axle. Single axle multipoint control has only one form, namely the first drive axle or the second drive axle is arranged on both sides. When the vehicle parks in a pit or a raised road surface of a construction site, a single bridge or a single wheel with a height sensor mechanism arranged therein is just pressed on the raised road surface, the height sensor detects that the distance from the bridge to the vehicle frame is too close, the air suspension is mistakenly overlow, the air suspension is jacked up, the pressure of a single air suspension air bag is overlarge, and the service life of the air suspension air bag and other parts is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model provides a device and an operation machinery of adjusting tandem axle air suspension gasbag height for solve among the prior art air suspension jack-up height too high, cause the too big defect of single air suspension gasbag pressure.
The utility model provides a adjust device of tandem air suspension gasbag height, include: including a pair of opposed coupling mechanism that sets up, every coupling mechanism is used for being connected with work machine's first transaxle and second transaxle respectively, every coupling mechanism includes: two ends of the first connecting rod are respectively used for being connected with the first drive axle and the second drive axle; one end of the connecting rod assembly is fixedly connected with the middle part of the first connecting rod, and the other end of the connecting rod assembly is provided with an angle sensor; and the control assembly is electrically connected with the angle sensor and used for controlling the air suspension air bag of the working machine to inflate or exhaust according to the signal sent by the angle sensor.
According to the utility model provides a pair of adjust device of tandem air suspension gasbag height, the both ends of head rod be used for respectively with first transaxle with second transaxle sliding connection.
According to the utility model provides a pair of adjust device of tandem axle air suspension gasbag height, the both ends of head rod are formed with the U-shaped groove, the U-shaped groove be used for respectively with first transaxle with second transaxle sliding connection.
According to the utility model provides a pair of adjust device of tandem axle air suspension gasbag height, the head rod is including sliding interior pole and the outer pole that cup joints, interior pole with the outer pole be used for respectively with first transaxle or second transaxle fixed connection.
According to the utility model provides a pair of adjust device of tandem air suspension gasbag height, connecting rod assembly includes: one end of the second connecting rod is fixedly connected with the middle part of the first connecting rod; and one end of the third connecting rod is rotatably connected with the second connecting rod, and the other end of the third connecting rod is provided with the angle sensor.
According to the utility model provides a pair of adjust device of tandem air suspension gasbag height, the second connecting rod includes: the first body part is fixedly connected with the middle part of the first connecting rod; one end of the second body is connected with the first body, and the other end of the second body is rotatably connected with the third connecting rod.
According to the utility model provides a pair of adjust device of tandem air suspension gasbag height, first noumenon portion includes: one end of the first rod body is fixedly connected with the middle part of the first connecting rod; the second rod body is perpendicular to the first rod body, and one end of the second rod body is connected with the other end of the first rod body; the third rod body is perpendicular to the second rod body, one end of the third rod body is rotatably connected with the other end of the second rod body, and the other end of the third rod body is connected with the second body portion.
According to the utility model provides a pair of adjust device of tandem axle air suspension gasbag height, control assembly includes the electronic control unit, the electronic control unit with the angle sensor electricity is connected.
According to the utility model provides a pair of adjust device of tandem axle air suspension gasbag height, control assembly still includes the solenoid valve, the solenoid valve with the electronic control unit electricity is connected, and be used for with the air suspension gasbag is connected.
The utility model also provides an operation machine, include: the device comprises a first drive axle, a second drive axle, an air suspension air bag and the device for adjusting the height of the air suspension air bag of the tandem drive axle, wherein the first drive axle, the second drive axle and the air suspension air bag are all connected with the device for adjusting the height of the air suspension air bag of the tandem drive axle.
The utility model provides a device for adjusting the height of a double-drive axle air suspension air bag, through setting up a connecting mechanism which is arranged oppositely, an angle sensor is positioned between a first drive axle and a second drive axle, the height of the air suspension air bag of the first drive axle and the second drive axle can be detected, when any side wheel stops at a bulge or a pit of a road surface, an operation mechanism can adjust the inclined state of a vehicle body; through setting up the connecting rod subassembly in the middle part of head rod, when the tire of first transaxle or second transaxle was located the arch or the pit on road surface, it was only half original to adjust the automobile body height, has reduced the jack-up height of air suspension gasbag, has avoided the too big problem of air suspension gasbag pressure. Meanwhile, under the environment with poor road conditions, the instability of the connecting mechanism can be avoided, and the adaptability of the vehicle in the road surface with poor road conditions is enhanced.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the following briefly introduces the drawings required for the embodiments or the prior art descriptions, and obviously, the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of one direction of the device for adjusting the height of the air bag of the dual-drive-axle air suspension provided by the invention;
FIG. 2 is a schematic structural view of the device for adjusting the height of the air bag of the dual-drive-axle air suspension provided by the invention in another direction;
reference numerals:
10: a first connecting rod; 20: a second connecting rod; 21: a first body portion;
22: a second body portion; 30: a third connecting rod; 40: an angle sensor;
50: an electromagnetic valve; 101: mounting a bracket; 102: an air suspension bladder.
Detailed Description
To make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention are combined to clearly and completely describe the technical solutions of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The following describes the device and the working machine for adjusting the height of the air bag of the air suspension of the tandem axle according to the present invention with reference to fig. 1 and 2.
As shown in fig. 1, in one embodiment of the present invention, the device for adjusting the height of the air bag of the tandem air suspension includes a pair of oppositely disposed connecting mechanisms, each for connecting with the first drive axle and the second drive axle of the working machine. Each of the connection mechanisms includes: a first connecting rod 10, a connecting rod assembly and a control assembly. Two ends of the first connecting rod 10 are respectively used for being connected with a first drive axle and a second drive axle, one end of the connecting rod assembly is fixedly connected with the middle part of the first connecting rod 10, the other end of the connecting rod assembly is provided with an angle sensor 40, and the control assembly is electrically connected with the angle sensor 40 and is used for controlling the air suspension air bag 102 of the working machine to inflate or exhaust according to signals sent by the angle sensor 40.
Specifically, in one embodiment of the present disclosure, a tandem axle refers to a first drive axle and a second drive axle of a work machine. A pair of coupling mechanism sets up relatively between first transaxle and second transaxle to every coupling mechanism's both ends are equallyd divide and are connected with first transaxle and second transaxle respectively. Further, both ends of the first connecting rod 10 are connected with the mounting bracket 101 of the first driving axle and the mounting bracket 101 of the second driving axle, respectively. One end of the connecting rod assembly is fixedly connected with the middle part of the first connecting rod 10.
In an embodiment of the present invention, optionally, when the first connecting rod 10 is a non-retractable rod body, both ends of the first connecting rod 10 are slidably connected with the first drive axle and the second drive axle respectively, at this time, both ends of the first connecting rod 10 may form a sliding slot, in which the mounting bracket 101 of the first drive axle and the mounting bracket 101 of the second drive axle can slide; optionally, when the first connecting rod 10 is a telescopic rod, two ends of the first connecting rod 10 are respectively and fixedly connected with the first drive axle and the second drive axle; alternatively, when one end of the first connecting rod 10 is fixedly connected to the second driving axle and the other end of the first connecting rod 10 is slidably connected to the first driving axle, the first connecting rod 10 can slide relative to the sliding groove of the mounting bracket 101 of the first driving axle.
It can be understood that: the connection manner of the first connecting rod 10 and the first and second driving axles may be various, and is not limited to the case illustrated in the present embodiment.
In the actual operation process, when the second drive axle of the working machine is just stopped on the bulge of the road surface, the second drive axle is jacked up, the relative sliding occurs between the first connecting rod 10 and the mounting bracket 101 of the second drive axle, so as to drive the relative sliding also occurs between the first connecting rod 10 and the first drive axle, at this time, the first connecting rod 10 and the ground are in an inclined state, the first connecting rod 10 drives the connecting rod assembly to jack up upwards, because the connecting rod assembly is positioned at the midpoint position of the first connecting rod 10, at this time, the jacking height of the connecting rod assembly is half of the jacking height of the second drive axle, a certain angle is formed between the connecting rod assembly and the angle sensor 40, the angle sensor 40 sends the angle signal detected by the angle sensor to the control assembly, the control assembly controls the air suspension air bag 102 to inflate according to the angle signal, when the angle sensor 40 detects that the angle between the connecting rod assembly and the connecting rod assembly is 0 degree, the control module controls the air suspension bladder 102 to stop inflating when the frame of the work machine is jacked up, but the jack-up height is only half of the jack-up height when the height sensor is mounted on the second drive axle.
Further, in the related art, a height sensor is installed on the second drive axle for detecting a jack-up height of the second drive axle, which can detect only the jack-up height of the second drive axle. In one embodiment of the present invention, the angle sensor 40 is disposed between the first drive axle and the second drive axle, and can be used to detect the jacking height of the first drive axle or the second drive axle.
Further, when the first connecting rod 10 is a telescopic rod, when the second driving axle of the working machine just stops on the protrusion of the road surface, the second driving axle is jacked up, the first connecting rod 10 contracts to enable the first connecting rod 10 and the ground to be in an inclined state, the first connecting rod 10 drives the connecting rod assembly to jack up upwards, the connecting rod assembly is located at the middle point of the first connecting rod 10, and at the moment, the jacking height of the connecting rod assembly is half of the jacking height of the second driving axle.
Further, in an embodiment of the present invention, the Control mechanism may be a structure of an Electronic Control Unit (ECU Electronic Control Unit) and the solenoid valve 50, and the Electronic Control Unit controls the solenoid valve 50 to open or close to inflate or stop the inflation of the air suspension bag 102.
The embodiment of the utility model provides a device for adjusting height of air suspension air bag of double drive axle, through setting up the coupling mechanism that sets up relatively, angle sensor is located between first drive axle and the second drive axle, can detect the height of the air suspension air bag of first drive axle and second drive axle, when any side wheel stops in the arch or pit of road surface, the operation mechanism can all carry out the adjustment of automobile body tilt state; through setting up the connecting rod subassembly in the middle part of head rod, when the tire of first transaxle or second transaxle was located the arch or the pit on road surface, it was only half original to adjust the automobile body height, has reduced the jack-up height of air suspension gasbag, has avoided the too big problem of air suspension gasbag pressure. Meanwhile, under the environment with poor road conditions, the instability of the connecting mechanism can be avoided, and the adaptability of the vehicle in the road surface with poor road conditions is enhanced.
As shown in fig. 1, in an embodiment of the present invention, optionally, both ends of the first connecting rod 10 are respectively used for sliding connection with the first driving axle and the second driving axle. The first connecting rod 10 has U-shaped grooves formed at both ends thereof for slidably connecting with the first and second driving axles, respectively.
Specifically, the mounting bracket 101 of the second drive axle is slidably mounted in the U-shaped groove at the first end of the first connecting rod 10, the mounting bracket 101 of the first drive axle is mounted in the U-shaped groove at the second end of the first connecting rod 10, when the tire of the second drive axle stops at the protrusion of the road surface, the second drive axle is jacked up, the mounting bracket 101 slides relative to the first end of the first connecting rod 10, the second end of the first connecting rod 10 and the mounting bracket 101 of the first drive axle are driven to slide relative to each other, at this time, the first connecting rod 10 and the ground are in an inclined state, the connecting rod assembly is jacked up under the drive of the first connecting rod 10, and the jacking height of the connecting rod assembly is only half of the jacking height when the height sensor is mounted on the second drive axle.
In an embodiment of the present invention, optionally, the first connecting rod 10 comprises an inner rod and an outer rod which are sleeved, the inner rod and the outer rod are slidably connected, and the inner rod and the outer rod are respectively used for being fixedly connected with the first driving axle or the second driving axle. Particularly, when the second drive axle of the working machine is just stopped on the bulge of the road surface, the second drive axle is jacked, the inner rod and the outer rod slide relatively, so that the first connecting rod 10 and the ground are in an inclined state, the connecting rod assembly is jacked upwards under the driving of the first connecting rod 10, and the jacking height of the connecting rod assembly is only half of the jacking height of the height sensor installed on the second drive axle.
Further, in this embodiment, the inner rod and the outer rod may alternatively be a piston rod and piston cylinder mechanism.
As shown in fig. 2, in an embodiment of the present invention, the connecting assembly includes: a second connecting rod 20 and a third connecting rod 30. One end of the second connecting rod 20 is fixedly connected with the middle part of the first connecting rod 10, one end of the third connecting rod 30 is rotatably connected with the second connecting rod 20, and the other end of the third connecting rod 30 is provided with an angle sensor 40. Specifically, the third connecting rod 30 is rotatable about the second connecting rod 20 in the traveling direction of the vehicle.
Particularly, when the tire of the second drive axle stops at the bulge of the road surface, the second drive axle is jacked up, relative sliding occurs between the mounting bracket 101 and one end of the first connecting rod 10, the second end of the first connecting rod 10 is driven to slide relative to the mounting bracket 101 of the first drive axle, the first connecting rod 10 and the ground are in an inclined state at the moment, the second connecting rod 20 is jacked up upwards under the driving of the first connecting rod 10, the second connecting rod 20 drives the third connecting rod 30 to jack up, and a certain angle is formed between the third connecting rod 30 and the angle sensor 40. The angle sensor 40 sends the angle signal detected by the angle sensor to the control assembly, the control assembly controls the air suspension air bag 102 to inflate according to the angle signal, the frame is jacked up, the end, connected with the first drive axle, of the first connecting rod 10 is jacked up, the second connecting piece 20 is further jacked up, the second connecting piece 20 drives the third connecting piece 30 and the second connecting piece 20 to rotate relatively, the angle between the third connecting piece 30 and the angle sensor 40 is reduced, when the angle sensor 40 detects that the angle between the angle sensor and the third connecting piece 30 is 0 degrees, the control assembly controls the air suspension air bag 102 to stop inflating, and at the moment, the jacked height of the frame of the working machine is only half of the jacked height when the height sensor is installed on the second drive axle.
Further, as shown in fig. 2, in an embodiment of the present invention, the second connecting rod 20 includes: a first body portion 21 and a second body portion 22. The first body 21 is fixedly connected to the middle of the first connecting rod 10, one end of the second body 22 is connected to the first body 21, and the other end is rotatably connected to the third connecting member 30.
Specifically, the first body portion 21 includes: the first rod body, the second rod body and the third rod body. One end of the first rod is fixedly connected with the middle of the first connecting rod 10, the second rod is perpendicular to the first rod, one end of the second rod is connected with the other end of the first rod, the third rod is perpendicular to the second rod, one end of the third rod is rotatably connected with the other end of the second rod, and the other end of the third rod is connected with the second body 22. Further, when the vehicle swings in the left-right direction during the traveling of the working machine, the second body 22 may swing left and right along with the third rod of the first body 21 to avoid the instability of the angle sensor 40.
In one embodiment of the present invention, the control assembly includes an electronic control unit and a solenoid valve 50. The angle sensor 40 and the solenoid valve 50 are electrically connected to the electronic control unit. Specifically, the angle sensor 40 sends the angle signal detected by the angle sensor to the electronic control unit, the electronic control unit controls the electromagnetic valve 50 to be opened to inflate the air suspension airbag 102, and when the angle signal sent to the electronic control unit by the angle sensor 40 is 0 °, the electronic control unit controls the electromagnetic valve 50 to be closed, and the air suspension airbag 102 stops inflating.
The following will describe in detail the operation of the device for adjusting the height of an air bag of a tandem axle air suspension according to the present invention, by taking the embodiment shown in fig. 1 and 2 as an example.
When the tire of the second drive axle stops at the bulge of the road surface, the second drive axle is jacked up, the relative sliding occurs between the mounting bracket 101 and one end of the first connecting rod 10, the second end of the first connecting rod 10 is driven to slide relative to the mounting bracket 101 of the first drive axle, at the moment, the first connecting rod 10 and the ground are in an inclined state, the second connecting rod 20 is jacked up upwards under the driving of the first connecting rod 10, the second connecting rod 20 drives the third connecting rod 30 to jack up, and a certain angle is formed between the third connecting rod 30 and the angle sensor 40.
The angle sensor 40 transmits the detected angle signal to the electronic control unit, the electronic control unit controls the electromagnetic valve 50 to be opened according to the angle signal, the air suspension airbag 102 is inflated, the frame is jacked up to drive one end of the first connecting rod 10 connected with the first drive axle to jack up, the second connecting rod 20 is further driven to jack up, the second connecting rod 20 drives the third connecting rod 30 and the second connecting rod 20 to rotate relatively, the angle between the third connecting rod 30 and the angle sensor 40 is reduced, when the angle sensor 40 detects that the angle between the angle sensor 40 and the third connecting rod 30 is 0 degree, the electronic control unit controls the electromagnetic valve 50 to be closed to stop inflating the air suspension airbag 102, and at the moment, the jacked height of the frame of the working machine is only half of the jacked height when the height sensor is installed on the second drive axle.
The embodiment of the utility model provides a adjust device of tandem air suspension gasbag height, angle sensor can detect the altitude variation of first transaxle and second transaxle gasbag, can adjust the gesture of automobile body better, simultaneously, respectively set up an angle sensor in one side of every side tire, detect the altitude variation of controlling both sides air suspension gasbag alone, when operation machinery parking in the slope, the pressurized side air suspension height can rise, has reduced the gradient of automobile body.
The embodiment of the utility model provides a still provide an operation machine, include: a first drive axle, a second drive axle, an air suspension bladder 102 and means for adjusting the height of the air suspension bladder of the tandem axle. Specifically, the first drive axle, the second drive axle and the air suspension bladder 102 are each connected to a device for adjusting the height of the air suspension bladder of the tandem drive axle.
In an embodiment of the present invention, optionally, the working machine is: mixer trucks, pumping equipment, fire trucks, dump trucks, and the like.
The working machine provided by the embodiment of the utility model is provided with the device for adjusting the height of the air bag of the double drive axle air suspension, when the tires of the first drive axle or the second drive axle of the working machine stop at the bulge or the pit of the road surface, the device for adjusting the height of the air bag of the double drive axle air suspension can jack up the frame of the working machine, and the inclination of the vehicle body is reduced; meanwhile, the jacking height of the frame is only half of that of the prior art, so that the phenomenon that the air bag of the air suspension is overlarge in pressure is avoided, and the air bag and peripheral parts of the air suspension are protected. Meanwhile, under the environment with poor road conditions, instability of a device for adjusting the height of the air bag of the air suspension of the tandem axle can be avoided, and the adaptability of the vehicle in the road surface with poor road conditions is enhanced.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. The utility model provides an adjust device of tandem air suspension gasbag height which characterized in that, includes a pair of coupling mechanism that sets up relatively, every coupling mechanism is used for being connected with the first transaxle and the second transaxle of operation machinery respectively, every coupling mechanism includes:
two ends of the first connecting rod are respectively used for being connected with the first drive axle and the second drive axle;
one end of the connecting rod assembly is fixedly connected with the middle part of the first connecting rod, and the other end of the connecting rod assembly is provided with an angle sensor;
and the control assembly is electrically connected with the angle sensor and used for controlling the air suspension air bag of the working machine to inflate or exhaust according to the signal sent by the angle sensor.
2. The device for adjusting the height of an air bag of a tandem axle according to claim 1, wherein two ends of the first connecting rod are respectively used for being slidably connected with the first drive axle and the second drive axle.
3. The device for adjusting the height of an air bag of a tandem axle according to claim 2, wherein both ends of the first connecting rod are formed with U-shaped grooves, and the U-shaped grooves are respectively used for being slidably connected with the first drive axle and the second drive axle.
4. The device for adjusting the height of the air bag of the tandem axle air suspension according to claim 1, wherein the first connecting rod comprises an inner rod and an outer rod which are slidably sleeved, and the inner rod and the outer rod are respectively used for being fixedly connected with the first drive axle or the second drive axle.
5. The apparatus for adjusting the air bag height of a tandem axle air suspension according to claim 1, wherein said link rod assembly comprises:
one end of the second connecting rod is fixedly connected with the middle part of the first connecting rod;
and one end of the third connecting rod is rotatably connected with the second connecting rod, and the other end of the third connecting rod is provided with the angle sensor.
6. The device for adjusting the air bag height of a tandem axle air suspension according to claim 5, wherein the second connecting rod comprises:
the first body part is fixedly connected with the middle part of the first connecting rod;
one end of the second body is connected with the first body, and the other end of the second body is rotatably connected with the third connecting rod.
7. The arrangement for adjusting the air bag height of a tandem axle air suspension according to claim 6, wherein said first body portion comprises:
one end of the first rod body is fixedly connected with the middle part of the first connecting rod;
the second rod body is perpendicular to the first rod body, and one end of the second rod body is connected with the other end of the first rod body;
the third rod body is perpendicular to the second rod body, one end of the third rod body is rotatably connected with the other end of the second rod body, and the other end of the third rod body is connected with the second body portion.
8. The arrangement for adjusting the air bag height of a tandem axle air suspension according to claim 1, wherein said control assembly includes an electronic control unit, said electronic control unit being electrically connected to said angle sensor.
9. The apparatus according to claim 8, wherein said control assembly further comprises a solenoid valve electrically connected to said electronic control unit and adapted to be connected to said air suspension bladder.
10. A work machine, comprising: the device for adjusting the height of the air bag of the air suspension of the tandem axle comprises a first drive axle, a second drive axle, an air suspension air bag and the device for adjusting the height of the air bag of the air suspension of the tandem axle, wherein the first drive axle, the second drive axle and the air suspension air bag are all connected with the device for adjusting the height of the air bag of the air suspension of the tandem axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120336772.8U CN214606972U (en) | 2021-02-05 | 2021-02-05 | Device for adjusting height of air bag of air suspension of double drive axle and operation machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120336772.8U CN214606972U (en) | 2021-02-05 | 2021-02-05 | Device for adjusting height of air bag of air suspension of double drive axle and operation machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214606972U true CN214606972U (en) | 2021-11-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120336772.8U Active CN214606972U (en) | 2021-02-05 | 2021-02-05 | Device for adjusting height of air bag of air suspension of double drive axle and operation machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214606972U (en) |
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2021
- 2021-02-05 CN CN202120336772.8U patent/CN214606972U/en active Active
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