CN104589917A - Front axle wheel tread regulating device - Google Patents
Front axle wheel tread regulating device Download PDFInfo
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- CN104589917A CN104589917A CN201510032202.9A CN201510032202A CN104589917A CN 104589917 A CN104589917 A CN 104589917A CN 201510032202 A CN201510032202 A CN 201510032202A CN 104589917 A CN104589917 A CN 104589917A
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- oil cylinder
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- telescopic boom
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Abstract
The invention discloses a front axle wheel tread regulating device in the field of environmental sanitary equipment. The front axle wheel tread regulating device comprises a left axle and a right axle, and further comprises a telescopic control mechanism, wherein a matched structure of the left axle and the right axle is a sliding sleeve structure; the telescopic control mechanism comprises a left telescopic arm, a right telescopic arm, and further comprises a left telescopic oil cylinder and a right telescopic oil cylinder, wherein one end of each of the left telescopic arm and the right telescopic arm is hinged to a left wheel fixing plate and a right wheel fixing plate; the other ends of the left telescopic arm and the right telescopic arm are connected on a telescopic arm fixing structure of a frame through joint ball bearings; the part, close to the left wheel fixing plate, of the left telescopic arm is hinged to a piston rod of the left telescopic oil cylinder; the part, close to the right wheel fixing plate, of the right telescopic arm is hinged to a piston rod of the right telescopic oil cylinder. Problems of poor reliability and poor stability in the prior art are solved. The front axle wheel tread regulating device is suitable for an occasion that regulating the front axle wheel tread is needed in an engineering vehicle.
Description
Technical field
The present invention relates to environmental sanitation equipment field, particularly a kind of propons Wheel gauge regulator.
Background technology
In vehicle travel process, need to front axle wheel apart from adjusting, to improve the directional balance that vehicle travels.For reaching the object changing front axle wheel distance, market is proposed the adjusting mechanism of front axle wheel distance, the adjusting mechanism of front axle wheel distance comprises Zuo Qiao and You Qiao, and the division of Zuo Qiao and right bridge is as the criterion with the travel direction of vehicle.Left bridge is installed with the left wheel adapter plate for fixing left wheel, right bridge is installed with the right wheel adapter plate for fixing right wheel, left wheel adapter plate, right wheel adapter plate is as the criterion with the center of symmetry face of left and right wheels and is symmetrical arranged, Zuo Qiao and right bridge cooperatively interact and with the center of symmetry face of left and right wheels for will definitely carry out expanding-contracting action on wheelspan direction, also comprise the pushing handle telescopic control mechanism that Zuo Qiao and right bridge can be driven to produce expanding-contracting action, this pushing handle telescopic control mechanism mainly comprises two telescopic oil cylinders, two telescopic oil cylinders are coaxially relative, and respective piston rod is hinged on inside each self-corresponding wheel, pressure can be directly acted on wheel, the wheelspan of wheel is forced to be changed.During work, it is slack-off that master controller measures car speed, just controls two inside indentations of telescopic oil cylinder, wheelspan is reduced, and ensures the speed travelled; Master controller measures car speed and accelerates, and just controls two telescopic oil cylinders and outwards ejects, wheelspan is increased, increase the directional balance travelled.
Although prior art can change front axle wheel distance in time according to the speed of a motor vehicle, but because in reality, vehicle traveling can produce larger jolting, and jolting of producing can act directly on two telescopic oil cylinders by wheel, make the piston rod of two telescopic oil cylinders be directly subject to size, direction do not stop change reverse load, very easily impaired, cause greatly reduce the service life of telescopic oil cylinder, make the reliability of pushing handle telescopic control mechanism, stability weakens greatly.
Summary of the invention
The object of this invention is to provide a kind of propons Wheel gauge regulator, solve the problem of reliability in prior art, poor stability.
The object of the present invention is achieved like this: a kind of propons Wheel gauge regulator, comprise Zuo Qiao and You Qiao, described left bridge is installed with the left wheel adapter plate for fixing left wheel, described right bridge is installed with the right wheel adapter plate for fixing right wheel, described left wheel adapter plate, right wheel adapter plate are symmetrical set, described Zuo Qiao and right bridge cooperatively interact on wheelspan direction, device also comprises the pushing handle telescopic control mechanism that Zuo Qiao and right bridge can be driven to produce expanding-contracting action, and the fit structure of described Zuo Qiao and right bridge is slidably socket join structure;
Described pushing handle telescopic control mechanism comprises all to left telescopic boom, right telescopic boom that vehicle heading extends, also comprise left telescopic oil cylinder, right telescopic oil cylinder, described left telescopic oil cylinder, right telescopic oil cylinder are parallel to wheelspan direction and are symmetrical set, and described left telescopic boom, right telescopic boom are symmetrical set;
One end of described left telescopic boom, right telescopic boom is hinged on left wheel adapter plate, right wheel adapter plate respectively, and the other end of described left telescopic boom, right telescopic boom is all connected on the telescopic boom fixed sturcture of vehicle frame by joint ball bearing;
Part near left wheel adapter plate on described left telescopic boom is hinged with the piston rod of left telescopic oil cylinder, part near right wheel adapter plate on described right telescopic boom is hinged with the piston rod of right telescopic oil cylinder, the cylinder barrel of described left telescopic oil cylinder, right telescopic oil cylinder is fixed on oil cylinder fixed mount, described left telescopic oil cylinder, right telescopic oil cylinder all control by hydraulic control system, and described hydraulic control system controls by master controller.
Technical description of the present invention is as follows: the fit structure of Zuo Qiao and right bridge is slidably socket join structure, greatly can reduce the difficulty of installation on the one hand, can ensure the smoothness of Zuo Qiao, right bridge expanding-contracting action on the one hand, the piston rod composition connecting rod mechanism of left wheel adapter plate, left telescopic boom, left telescopic oil cylinder, the piston rod of right wheel adapter plate, right telescopic boom, right telescopic oil cylinder also forms connecting rod mechanism, left telescopic boom, right telescopic boom are subject to the push-and-pull action power of the piston rod of left telescopic oil cylinder, the piston rod of right telescopic oil cylinder respectively, and such push-and-pull action power is parallel to wheelspan direction, because the part near left wheel adapter plate on left telescopic boom is hinged with the piston rod of left telescopic oil cylinder, part near right wheel adapter plate on right telescopic boom is hinged with the piston rod of right telescopic oil cylinder, mean the piston rod of left telescopic oil cylinder, the force position of the piston rod output of right telescopic oil cylinder is respectively near left wheel adapter plate, right wheel adapter plate, can not only prevent from shaking and directly damage left telescopic oil cylinder, right telescopic oil cylinder, enough application forces can also be ensured and strut or hold left wheel adapter plate, right wheel adapter plate, make left wheel, the spacing of right wheel expands.
The principle of work of work of the present invention is as follows: when car speed changes, left telescopic oil cylinder, right telescopic oil cylinder produce expanding-contracting action respect to one another simultaneously, make left telescopic boom, right telescopic boom can drive left wheel adapter plate, right wheel adapter plate respectively, thus promote left wheel, right wheel relative to wheelspan symmetrically expansion, reduce original wheelspan, thus ensure vehicle travel stability.
When constant speed, then the application force relying on the piston rod of the piston rod of left telescopic oil cylinder, right telescopic oil cylinder to export pins left telescopic boom, right telescopic boom, ensures the stability of wheelspan.
Compared with prior art, beneficial effect of the present invention is: apart from the Stability and dependability in change procedure, also can not only can ensure the stability of wheelspan size in constant speed situation by lifting wheel very significantly.
As improvement project of the present invention, the fit structure of described Zuo Qiao and right bridge arranges as follows: Zuo Qiao and You Qiao is rhs-structure, and wherein right bridge is socketed in the inner chamber of left bridge slidably.Zuo Qiao and You Qiao is rhs-structure and can prevents Zuo Qiao and right bridge from producing relative motion in radial direction, further enhancing reliability and stability, and right bridge is socketed in the inner chamber of left bridge slidably, Installation and Debugging can be convenient to greatly, can ensure that the relative sliding track of Zuo Qiao, right bridge is consistent with wheelspan direction well.
Scheme as a further improvement on the present invention, the inner chamber of described left bridge is installed with the proximity switch that can detect right bridge limit of sports record position, and described proximity switch is connected by control line with master controller.The movement position of right bridge in left bridge can be monitored, the position if right bridge reaches capacity, position signal can be fed back to master controller, by master controller, instruction is sent to hydraulic control system, left telescopic oil cylinder, right telescopic oil cylinder is made to stop expanding-contracting action, thus limit the telescopic extensions of Zuo Qiao, right bridge, the generation of prevent from stretching position, the excessive phenomenon of wheelspan.
Scheme as a further improvement on the present invention, the upper and lower surface of described right bridge is all fixed with hypotenuse guide plate, and described hypotenuse guide plate can slide in the guide groove of the inner chamber of left bridge.Assembly process process is good, improves the smoothness of Zuo Qiao, right bridge relative sliding further.
Scheme as a further improvement on the present invention, described left telescopic oil cylinder, right telescopic oil cylinder are crisscross arranged.Because the stroke of left telescopic oil cylinder, right telescopic oil cylinder is longer, cause cylinder barrel longer, adopt and be crisscross arranged and can save installing space, reduce the difficulty of assembling.
Scheme as a further improvement on the present invention, described oil cylinder fixed mount is symmetrical structure, the described center of symmetry of oil cylinder fixed mount and the center superposition of wheelspan.Further enhancing the manufacturability of structure, be convenient to left telescopic oil cylinder, right telescopic oil cylinder finds centering benchmark when mounted.
Scheme as a further improvement on the present invention, described telescopic boom fixed sturcture comprises two the telescopic boom adapter plates be symmetrical set, the lower end of described two telescopic boom adapter plates is connected with left telescopic boom, right telescopic boom respectively by joint ball bearing, the upper end of described telescopic boom adapter plate is provided with bayonet socket, and described telescopic boom adapter plate is welded on the front rail of vehicle frame by bayonet socket.The upper end of telescopic boom adapter plate arranges the Joint strenght that bayonet arrangement significantly can increase telescopic boom adapter plate and front rail, and telescopic boom adapter plate can ensure left telescopic boom, right telescopic boom has good stability in motion process.
Accompanying drawing explanation
Fig. 1 is the solution of the present invention figure.
Fig. 2 is keystone configuration exploded drawings.
Fig. 3 is three-dimensional combination figure.
Fig. 4 is the cooperation figure of hypotenuse guide plate and guide groove.
Wherein, 1 left telescopic oil cylinder, 2 right telescopic oil cylinders, 3 right bridges, 3a hypotenuse guide plate, 4 left bridges, 4a guide groove, 4b proximity switch, 5 left wheel adapter plates, 6 right wheel adapter plates, 7 right telescopic booms, 8 left telescopic booms, 9 oil cylinder fixed mounts, 10 telescopic boom adapter plates, 10a bayonet socket, 11 joint ball bearings, 12 vehicle frames, 13 front rails, 14 right wheels, 15 master controllers, 16 hydraulic control systems, 17 left wheels.
Detailed description of the invention
As Figure 1-4, a kind of propons Wheel gauge regulator, comprise left bridge 4 and right bridge 3, left bridge 4 is installed with the left wheel adapter plate 5 for fixing left wheel 17, right bridge 3 is installed with the right wheel adapter plate 6 for fixing right wheel 14, left wheel adapter plate 5, right wheel adapter plate 6 are symmetrical set, left bridge 4 cooperatively interacts on wheelspan direction with right bridge 3, device also comprises the pushing handle telescopic control mechanism that left bridge 4 and right bridge 3 can be driven to produce expanding-contracting action, and left bridge 4 and the fit structure of right bridge 3 are slidably socket join structure; Pushing handle telescopic control mechanism comprises all to left telescopic boom 8, right telescopic boom 7 that vehicle heading extends, also comprise the left telescopic oil cylinder 1, the right telescopic oil cylinder 2 that control by master controller, left telescopic oil cylinder 1, right telescopic oil cylinder 2 are parallel to wheelspan direction and are symmetrical set, and left telescopic boom 8, right telescopic boom 7 are symmetrical set; One end of left telescopic boom 8, right telescopic boom 7 is hinged on left wheel adapter plate 5, right wheel adapter plate 6 respectively, and the other end of left telescopic boom 8, right telescopic boom 7 is all connected on the telescopic boom fixed sturcture of vehicle frame 12 by joint ball bearing 11; Part near left wheel adapter plate 5 on left telescopic boom 8 is hinged with the piston rod of left telescopic oil cylinder 1, part near right wheel adapter plate 6 on right telescopic boom 7 is hinged with the piston rod of right telescopic oil cylinder 2, the cylinder barrel of left telescopic oil cylinder 1, right telescopic oil cylinder 2 is fixed on oil cylinder fixed mount 9, left telescopic oil cylinder 1, right telescopic oil cylinder 2 all control by hydraulic control system 16, and hydraulic control system 16 controls by master controller 15.
Above-mentioned left bridge 4 and the fit structure of right bridge 3 be slidably socket join structure, greatly can reduce the difficulty of installation on the one hand, and when one side can ensure wheelspan, the telescopic direction of left bridge 4, right bridge 3 is consistent with wheelspan direction, the piston rod composition connecting rod mechanism of left wheel adapter plate 5, left telescopic boom 8, left telescopic oil cylinder 1, the piston rod of right wheel adapter plate 6, right telescopic boom 7, right telescopic oil cylinder 2 also forms connecting rod mechanism, left telescopic boom 8, right telescopic boom 7 are subject to the push-and-pull action power of the piston rod of left telescopic oil cylinder 1, the piston rod of right telescopic oil cylinder 2 respectively, and such push-and-pull action power is parallel to wheelspan direction, because the part near left wheel adapter plate 5 on left telescopic boom 8 is hinged with the piston rod of left telescopic oil cylinder 1, part near right wheel adapter plate 6 on right telescopic boom 7 is hinged with the piston rod of right telescopic oil cylinder 2, mean the piston rod of left telescopic oil cylinder 1, the force position of the piston rod output of right telescopic oil cylinder 2 is respectively near left wheel adapter plate 5, right wheel adapter plate 6, can not only prevent from shaking and directly damage left telescopic oil cylinder 1, right telescopic oil cylinder 2, enough application forces can also be ensured and strut or hold left wheel adapter plate 5, right wheel adapter plate 6, make left wheel 17, right wheel 14 can overcome the friction force on ground well and expand wheelspan.
Above-mentioned left bridge 4 arranges as follows with the fit structure of right bridge 3: left bridge 4 is rhs-structure with right bridge 3, and wherein right bridge 3 is socketed in the inner chamber of left bridge 4 slidably.Left bridge 4 and right bridge 3 are rhs-structure and can prevent left bridge 4 from producing relative motion in radial direction with right bridge 3, further enhancing reliability and stability, and right bridge 3 is socketed in the inner chamber of left bridge 4 slidably, Installation and Debugging can be convenient to greatly, can ensure that the relative sliding track of left bridge 4, right bridge 3 is consistent with wheelspan direction well.
The inner chamber of above-mentioned left bridge 4 is installed with the proximity switch 4b that can detect right bridge 3 limit of sports record position, and proximity switch 4b is connected by control line with master controller 15.The position if right bridge 3 reaches capacity, position signal can be fed back to master controller 15, instruction is sent by master controller 15 pairs of hydraulic control systems 16, make left telescopic oil cylinder 1, right telescopic oil cylinder 2 stops expanding-contracting action, thus limit the telescopic extensions of left bridge 4, right bridge 3, the generation of prevent from stretching position, the excessive phenomenon of wheelspan.
The upper and lower surface of above-mentioned right bridge 3 is all fixed with hypotenuse guide plate 3a, and hypotenuse guide plate 3a can slide in the guide groove 4a of the inner chamber of left bridge 4, improves the smoothness of left bridge 4, right bridge 3 relative sliding further.
Above-mentioned left telescopic oil cylinder 1, right telescopic oil cylinder 2 are crisscross arranged, and can save installing space, reduce the difficulty of assembling.
Above-mentioned oil cylinder fixed mount 9 is symmetrical structure, the center of symmetry of oil cylinder fixed mount 9 and the center superposition of wheelspan, is convenient to left telescopic oil cylinder 1, right telescopic oil cylinder 2 and finds centering benchmark when mounted.
Above-mentioned telescopic boom fixed sturcture comprises two the telescopic boom adapter plates 10 be symmetrical set, the lower end of two telescopic boom adapter plates 10 is connected with left telescopic boom 8, right telescopic boom 7 respectively by joint ball bearing 11, the upper end of telescopic boom adapter plate 10 is provided with bayonet socket 10a, and telescopic boom adapter plate 10 is welded on the front rail 13 of vehicle frame 12 by bayonet socket 10a.The upper end of telescopic boom adapter plate 10 arranges the Joint strenght that bayonet socket 10a structure significantly can increase telescopic boom adapter plate 10 and front rail 13, and telescopic boom adapter plate 10 can ensure left telescopic boom 8, right telescopic boom 7 has good stability in motion process.
The principle of work of work of the present invention is as follows: when car speed changes, left telescopic oil cylinder 1 can be controlled, right telescopic oil cylinder 2 produces expanding-contracting action respect to one another simultaneously, make left telescopic boom 8, right telescopic boom 7 can drive left wheel adapter plate 5, right wheel adapter plate 6 respectively, thus promote left wheel 17, right wheel 14 relatively wheelspan symmetrically expansion, reduce original wheelspan, thus ensure the stability that vehicle travels.
When constant speed, then the application force relying on the piston rod of the piston rod of left telescopic oil cylinder 1, right telescopic oil cylinder 2 to export pins left telescopic boom 8, right telescopic boom 7, ensures the stability of wheelspan.
The present invention is not limited to above-described embodiment; on the basis of technical scheme disclosed by the invention; those skilled in the art is according to disclosed technology contents; do not need performing creative labour just can make some to some technical characteristics wherein to replace and distortion, these are replaced and are out of shape all in protection scope of the present invention.
Claims (7)
1. a propons Wheel gauge regulator, comprise left bridge (4) and right bridge (3), described left bridge (4) is installed with the left wheel adapter plate (5) for fixing left wheel (17), described right bridge (3) is installed with the right wheel adapter plate (6) for fixing right wheel (14), described left wheel adapter plate (5), right wheel adapter plate (6) is symmetrical set, described left bridge (4) and right bridge (3) cooperatively interact on wheelspan direction, device also comprises the pushing handle telescopic control mechanism that left bridge (4) and right bridge (3) can be driven to produce expanding-contracting action, it is characterized in that: the fit structure of described left bridge (4) and right bridge (3) is slidably socket join structure,
Described pushing handle telescopic control mechanism comprises all to left telescopic boom (8), right telescopic boom (7) that vehicle heading extends, also comprise left telescopic oil cylinder (1), right telescopic oil cylinder (2), described left telescopic oil cylinder (1), right telescopic oil cylinder (2) are parallel to wheelspan direction and are symmetrical set, and described left telescopic boom (8), right telescopic boom (7) are symmetrical set;
One end of described left telescopic boom (8), right telescopic boom (7) is hinged on left wheel adapter plate (5), right wheel adapter plate (6) respectively, and the other end of described left telescopic boom (8), right telescopic boom (7) is all connected to by joint ball bearing (11) on the telescopic boom fixed sturcture of vehicle frame (12);
The upper part near left wheel adapter plate (5) of described left telescopic boom (8) is hinged with the piston rod of left telescopic oil cylinder (1), the upper part near right wheel adapter plate (6) of described right telescopic boom (7) is hinged with the piston rod of right telescopic oil cylinder (2), the cylinder barrel of described left telescopic oil cylinder (1), right telescopic oil cylinder (2) is fixed on oil cylinder fixed mount (9), described left telescopic oil cylinder (1), right telescopic oil cylinder (2) all control by hydraulic control system (16), and described hydraulic control system (16) controls by master controller (15).
2. a kind of propons Wheel gauge regulator according to claim 1, it is characterized in that: described left bridge (4) arranges as follows with the fit structure of right bridge (3): left bridge (4) and right bridge (3) are rhs-structure, and wherein right bridge (3) is socketed in the inner chamber of left bridge (4) slidably.
3. a kind of propons Wheel gauge regulator according to claim 2, it is characterized in that: the inner chamber of described left bridge (4) is installed with the proximity switch (4b) that can detect right bridge (3) limit of sports record position, and described proximity switch (4b) is connected by control line with master controller (15).
4. a kind of propons Wheel gauge regulator according to claim 2, it is characterized in that: the upper and lower surface of described right bridge (3) is all fixed with hypotenuse guide plate (3a), described hypotenuse guide plate (3a) can be slided in the guide groove (4a) of the inner chamber of Zuo Qiao (4).
5. a kind of propons Wheel gauge regulator according to claim 1, is characterized in that: described left telescopic oil cylinder (1), right telescopic oil cylinder (2) are crisscross arranged.
6. a kind of propons Wheel gauge regulator according to claim 1, is characterized in that: described oil cylinder fixed mount (9) is symmetrical structure, the described center of symmetry of oil cylinder fixed mount (9) and the center superposition of wheelspan.
7. a kind of propons Wheel gauge regulator according to claim 1, it is characterized in that: described telescopic boom fixed sturcture comprises two the telescopic boom adapter plates (10) be symmetrical set, the lower end of described two telescopic boom adapter plates (10) is connected with left telescopic boom (8), right telescopic boom (7) respectively by joint ball bearing (11), the upper end of described telescopic boom adapter plate (10) is provided with bayonet socket (10a), and described telescopic boom adapter plate (10) is welded on the front rail (13) of vehicle frame (12) by bayonet socket (10a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510032202.9A CN104589917B (en) | 2015-01-22 | 2015-01-22 | A kind of propons Wheel gauge regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510032202.9A CN104589917B (en) | 2015-01-22 | 2015-01-22 | A kind of propons Wheel gauge regulator |
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| Publication Number | Publication Date |
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| CN104589917A true CN104589917A (en) | 2015-05-06 |
| CN104589917B CN104589917B (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510032202.9A Active CN104589917B (en) | 2015-01-22 | 2015-01-22 | A kind of propons Wheel gauge regulator |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106082046A (en) * | 2016-08-05 | 2016-11-09 | 湖南星邦重工有限公司 | The chassis of a kind of aerial work platform and aerial work platform |
| CN107628535A (en) * | 2017-11-09 | 2018-01-26 | 河南恒远恒山工业有限公司 | A kind of OTC's trolley |
| CN109895557A (en) * | 2019-03-15 | 2019-06-18 | 合肥工业大学 | A kind of running gear with wheelspan telescopic regulating mechanism |
| CN112124004A (en) * | 2019-06-25 | 2020-12-25 | 比亚迪股份有限公司 | Forklift wheel tread adjusting device and forklift |
| CN112243638A (en) * | 2020-11-13 | 2021-01-22 | 广西科技师范学院 | Particulate matter hole sowing device with wheel pitch adjusting mechanism and using method |
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| CN204526645U (en) * | 2015-01-22 | 2015-08-05 | 扬州金威环保科技有限公司 | A kind of propons Wheel gauge regulator |
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2015
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| WO1995017327A1 (en) * | 1992-06-26 | 1995-06-29 | Tapani Toivanen | Equipment for adjustment of distance between guiding skis of a motor sledge |
| CN201423886Y (en) * | 2009-06-22 | 2010-03-17 | 兖州市大通诚信机械有限公司 | Front axle of tractor |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106082046A (en) * | 2016-08-05 | 2016-11-09 | 湖南星邦重工有限公司 | The chassis of a kind of aerial work platform and aerial work platform |
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| CN109895557A (en) * | 2019-03-15 | 2019-06-18 | 合肥工业大学 | A kind of running gear with wheelspan telescopic regulating mechanism |
| CN109895557B (en) * | 2019-03-15 | 2024-02-13 | 合肥工业大学 | Running gear with wheel tread flexible adjustment mechanism |
| CN112124004A (en) * | 2019-06-25 | 2020-12-25 | 比亚迪股份有限公司 | Forklift wheel tread adjusting device and forklift |
| CN112124004B (en) * | 2019-06-25 | 2022-09-09 | 比亚迪股份有限公司 | Forklift wheel tread adjusting device and forklift |
| CN112243638A (en) * | 2020-11-13 | 2021-01-22 | 广西科技师范学院 | Particulate matter hole sowing device with wheel pitch adjusting mechanism and using method |
| CN112243638B (en) * | 2020-11-13 | 2024-03-01 | 广西科技师范学院 | Particulate matter hill-drop device with wheel tread adjusting mechanism and use method |
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| CN104589917B (en) | 2015-11-18 |
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Application publication date: 20150506 Assignee: Yangzhou Jinwei Machinery Co., Ltd. Assignor: Yangzhou Jin Wei Environmental Protection Technology Co., Ltd Contract record no.: 2018320000027 Denomination of invention: Front axle wheel tread regulating device Granted publication date: 20151118 License type: Common License Record date: 20180228 |