CN112590650A - Full-folding trailer device and wrecker - Google Patents
Full-folding trailer device and wrecker Download PDFInfo
- Publication number
- CN112590650A CN112590650A CN202110028062.3A CN202110028062A CN112590650A CN 112590650 A CN112590650 A CN 112590650A CN 202110028062 A CN202110028062 A CN 202110028062A CN 112590650 A CN112590650 A CN 112590650A
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- connecting rod
- hinged
- shaped
- beam body
- fully collapsible
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P3/00—Vehicles adapted to transport, to carry or to comprise special loads or objects
- B60P3/12—Vehicles adapted to transport, to carry or to comprise special loads or objects for salvaging damaged vehicles
- B60P3/125—Vehicles adapted to transport, to carry or to comprise special loads or objects for salvaging damaged vehicles by supporting only part of the vehicle, e.g. front- or rear-axle
- B60P3/127—Vehicles adapted to transport, to carry or to comprise special loads or objects for salvaging damaged vehicles by supporting only part of the vehicle, e.g. front- or rear-axle on a tow dolly
Abstract
The invention provides a fully-folding trailer device and a wrecker, wherein the fully-folding trailer device comprises a beam body, an outer side tire holding mechanism, an inner side tire holding mechanism and bearing wheels; the outer side tire holding mechanisms are respectively arranged at two ends of the beam body, the inner side tire holding mechanisms are respectively arranged at two ends of the beam body, the two tire holding mechanisms are driven by the oil cylinders and respectively arranged at two sides of the beam body in a furled state, and when the oil cylinders are driven to unfold, the two tire holding mechanisms are turned in opposite directions to jointly form a holding frame for supporting tires, so that the problems that the existing lifting operation mechanism occupies a large space and is complex in structure can be solved.
Description
Technical Field
The invention relates to the field of wreckers, in particular to a fully-foldable trailer device and a wrecker.
Background
When the wrecker is used for lifting operation, in order to improve the lifting operation speed and reduce the operation intensity, the wrecker is provided with a full-automatic lifting operation mechanism, when in operation, the tire clasping mechanism clasps the wheels of the wrecker, and then the wrecker is dragged away after being lifted by the lifting mechanism.
In the prior art, for example, the patent number is CN03248472.0, the name is a patent publication of an automatic tire embracing mechanism of an obstacle clearing truck, in the patent, a left and a right embracing arms of an L shape are driven to overturn by a tire embracing oil cylinder, and the left and the right embracing arms cannot be automatically folded and furled in the overturning process, and still occupy a large space.
Therefore, it is necessary to provide a new trailer device to solve the problems of large occupied space and inconvenient folding in the prior art.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a fully-foldable trailer device and an obstacle removing vehicle.
The invention provides a fully-folding trailer device, comprising:
the beam body is provided with a beam body,
the outer tire embracing mechanism comprises first L-shaped components and first oil cylinders, wherein the first L-shaped components are hinged to two ends of the beam body and are symmetrical to each other, and the first oil cylinders drive the L-shaped components to turn over and unfold;
the inner tire embracing mechanism comprises second L-shaped components which are hinged to two ends of the beam body and are symmetrical to each other, and a second oil cylinder which drives the L-shaped components to overturn and unfold;
the bearing wheel is arranged at one end, far away from the beam body, of the first L-shaped assembly;
under the working state, the first L-shaped component and the second L-shaped component are unfolded and oppositely arranged, and are constructed into a containing frame for bearing the tire.
Preferably, the second L-shaped component is a parallelogram linkage.
Preferably, the second L-shaped group comprises:
one end of the first connecting rod is hinged with the beam body;
the second connecting rod is arranged on one side of the first connecting rod, and one end of the second connecting rod is hinged with the beam body;
the third connecting rod comprises a connecting part and a holding part, and one ends of the first connecting rod and the second connecting rod, which are far away from the beam body, are hinged with the connecting part;
and two ends of the second oil cylinder are respectively connected with the two first connecting rods.
Preferably, the first L-shaped component is a parallelogram linkage.
Preferably, the first L-shaped member comprises:
one end of the fourth connecting rod is hinged with the beam body;
the fifth connecting rod is arranged on one side of the fourth connecting rod, and one end of the fifth connecting rod is hinged with the beam body;
the sixth connecting rod is hinged with one ends, far away from the beam body, of the fourth connecting rod and the fifth connecting rod respectively;
one end of the seventh connecting rod is hinged to the fourth connecting rod, and one part of the seventh connecting rod, which is far away from the fourth connecting rod, is hinged to one end of the sixth connecting rod, which is far away from the fourth connecting rod and the fifth connecting rod.
Preferably, the beam body is a T-shaped beam and comprises a cross beam and a connecting beam perpendicular to the cross beam, the first L-shaped assemblies are arranged at two ends of the cross beam, one end of the first oil cylinder is hinged to the connecting beam, and the other end of the first oil cylinder is hinged to the fifth connecting rod.
Preferably, the beam body is a T-shaped beam and comprises a cross beam and a connecting beam perpendicular to the cross beam, the first L-shaped component is arranged on one side of the cross beam, and the second L-shaped component is arranged on the other side of the cross beam.
Preferably, the fully-foldable trailer device further comprises a connecting seat and a third oil cylinder, wherein the connecting seat is hinged to the bearing wheel and the first L-shaped component respectively, and the third oil cylinder drives the connecting seat to turn.
Preferably, the fully-foldable trailer device further comprises a connecting seat hinged to the bearing wheel and the seventh connecting rod respectively; the fully-foldable trailer device further comprises an elastic piece for connecting the connecting seat and the seventh connecting rod.
The invention also provides a wrecker which comprises the fully-foldable trailer device.
The invention has the following beneficial effects:
the full-folding trailer device comprises a beam body, an outer tire embracing mechanism and an inner tire embracing mechanism, wherein the outer tire embracing mechanism is respectively arranged at two ends of the beam body, the inner tire embracing mechanism is respectively arranged at two ends of the beam body, the outer tire embracing mechanism and the inner tire embracing mechanism are driven by an oil cylinder, the outer tire embracing mechanism and the inner tire embracing mechanism are respectively arranged at two sides of the beam body in a folded state, and the outer tire embracing mechanism and the inner tire embracing mechanism are oppositely turned to jointly form an accommodating frame for bearing tires when the. Therefore, the problem that the existing trailer occupies a large space and cannot be folded can be solved.
In addition, the bearing wheel is arranged below one end, far away from the beam body, of the first L-shaped assembly, when the lifting device is used, one end, far away from the bearing wheel, of the beam body can be lifted without arranging a specially-made lifting oil cylinder, and the front wheel of the fault car can be lifted off the ground, so that the structure is simpler. In addition, the lifting angle of the head of the fault car is small, the sliding risk of the fault car is reduced, and the safety is high in the hauling process. The dead weight of the head of the fault vehicle is borne by the bearing wheels, the whole gravity center of the obstacle clearing vehicle cannot move backwards, and the fault clearing vehicle is safer to run.
Drawings
Fig. 1 is a schematic structural view of a fully collapsible trailer apparatus in an expanded state according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of the fully collapsible trailer apparatus shown in FIG. 1 in a collapsed state;
FIG. 3 is a schematic view of the bearing wheel and the connecting seat in the embodiment of FIG. 1;
FIG. 4 is a schematic view of the fully collapsible trailer arrangement of the embodiment of FIG. 1 in an operational state;
FIG. 5 is a side view of the fully collapsible trailer arrangement of the embodiment of FIG. 1 prior to tire lifting;
fig. 6 is a side view of the fully collapsible trailer arrangement of the embodiment of fig. 1 with the tires raised.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
Example 1
Referring to fig. 1 to 4, the fully collapsible trailer apparatus includes: the tire holding device comprises a beam body 10, an outer tire holding mechanism 30 and an inner tire holding mechanism 20, wherein the outer tire holding mechanism 30 comprises a first L-shaped component and a first oil cylinder 35, the first L-shaped component is hinged to two ends of the beam body 10 and is symmetrical to the first L-shaped component, and the first oil cylinder 35 drives the L-shaped component to turn over; the inner tire embracing mechanism 20 comprises a second L-shaped component and a second oil cylinder 24, wherein the second L-shaped component is hinged to two ends of the beam body 10 and is symmetrical to the second L-shaped component, and the second oil cylinder 24 drives the L-shaped component to overturn; a bearing wheel 41 is arranged at one end of the first L-shaped component far away from the beam body 10; in the working state, the first L-shaped component and the second L-shaped component are unfolded and oppositely arranged, and are configured to support the accommodating frame of the tire.
Specifically, referring to fig. 4, during use, the first oil cylinder 35 drives the outer tire embracing mechanism to unfold, and the fourth link 31 rotates from a state perpendicular to the cross beam 11 to a state parallel to the cross beam 11. And an L-shaped seventh link 34, the longer end of which is turned from a state parallel to the fourth link 31 to a state perpendicular to the fourth link 31. Then the fully-folding trailer device moves to the lower part of the tire of the fault vehicle along with the wrecker, the fourth connecting rod 31 is abutted against the front end of the tire, and the seventh connecting rod 34 is close to or abutted against the outer side of the tire to limit the side slip of the tire.
Then, the second oil cylinder 24 drives the inner tire embracing mechanism 20 to unfold, the included angle between the first connecting rod 21 and the cross beam 11 is increased, and the third connecting rod 23 moves towards the two ends of the cross beam 11, so that the included angle between the third connecting rod and the first connecting rod 21 is increased. Until the clasping portion 23b is parallel to the cross member 11. The third link 23 moves toward the rear end of the tire to hold the tire at this time; the first link 21 is close to or against the inner side of the tire to restrict the tire from slipping.
The first L-shaped component and the second L-shaped component are completely unfolded and hold the front, the rear, the inner side and the outer side of the tire, so that the accommodating frame for supporting the tire is constructed, and the tire can be prevented from falling off.
In this embodiment, the beam body 10 is a T-shaped beam, and includes a cross beam 11 and a connecting beam 12 perpendicular to the cross beam 11, the second L-shaped components are disposed at two ends of the cross beam 11, and the second L-shaped components are two sets of parallelogram link mechanisms disposed at two ends of the cross beam 11, and include: a first link 21, a second link 22, and a third link 23.
One end of the first connecting rod 21 is hinged to the cross beam 11, and the second connecting rod 22 is disposed at one side of the first connecting rod 21, and one end of the second connecting rod is hinged to the cross beam 11. The third connecting rod 23 comprises a connecting part 23a and a holding part 23b, and one ends of the first connecting rod 21 and the second connecting rod 22 far away from the cross beam 11 are hinged with the connecting part 23 a; one end of the second oil cylinder 24 is hinged with the middle section of one of the first connecting rods 21, and the other end is hinged with the other first connecting rod 21. The second oil cylinder is arranged in parallel with the cross beam 11, and the second L-shaped assemblies at the left end and the right end can be driven by the extension and contraction of the second oil cylinder to synchronously unfold or fold.
In this embodiment, the first L-shaped component is also a two-component parallelogram linkage mechanism disposed at two ends of the beam 11, and the first L-shaped component and the second L-shaped component at the same end are disposed opposite to each other. Specifically, the first L-shaped member includes: a fourth link 31, a fifth link 32, a sixth link 33, and a seventh link 34
One end of the fourth connecting rod 31 is hinged with the beam 11; the fifth connecting rod 32 is arranged on one side of the fourth connecting rod 31, and one end of the fifth connecting rod is hinged with the cross beam 11; the sixth link 33 is hinged with one end of the fourth link 31 and one end of the fifth link 32 away from the cross beam 11. A hinge shaft is provided at a middle portion of the sixth link 33, the hinge shaft being hinged to the fourth link 31. The seventh link 34 is provided in an L-shape, and a free end of a shorter section thereof is hinged to the hinge shaft. One longer section of the seventh link 34 is hinged to one end of the sixth link 33 away from the fourth link 31 and the fifth link 32. The first oil cylinder 35 comprises a first oil cylinder 35, one end of which is hinged with the connecting beam 12, and the other end of which is hinged with the fifth connecting rod 32. The invention is provided with two first oil cylinders 35 which are symmetrically distributed and can drive the first L-shaped components at the left end and the right end to synchronously unfold or fold by stretching.
It should be noted that, by arranging the first L-shaped component and the second L-shaped component into a parallelogram link assembly and arranging a certain angle between the holding portion 23b and the connecting portion 23a, the holding portion 23b and the cross beam 11 are always kept parallel in the folding or unfolding process, so that the holding portion 23b is completely attached to and supported by the tread of the tire, and the tire is ensured to be stressed evenly. For tires with different diameters, the angle between the first connecting rod 21 and the third connecting rod 23 can be adjusted by the extension and contraction of the second oil cylinder 24, and the tires with various sizes can be adapted by correspondingly adjusting the distance between the holding part 23b and the cross beam 11.
The full-folding trailer device comprises a beam body 10, an outer tire embracing mechanism 30 and an inner tire embracing mechanism 20, wherein the outer tire embracing mechanism 30 is respectively arranged at two ends of the beam body 10, the inner tire embracing mechanism 20 is respectively arranged at two ends of the beam body 10, the outer tire embracing mechanism and the inner tire embracing mechanism are driven by oil cylinders, and are respectively arranged at two sides of the beam body 10 in a folding state, and when the oil cylinders are driven to unfold, the outer tire embracing mechanism and the inner tire embracing mechanism are oppositely turned to jointly form an accommodating frame for bearing tires. Therefore, the problem that the existing trailer occupies a large space and cannot be folded can be solved.
Referring to fig. 5 and 6, the gripping of the faulty tire is achieved by controlling the distance between the third link 23 and the fourth link 31 during the gripping. Namely, the third link 23 abuts against the front end of the tire, and the fourth link 31 continues to move towards the third link 23 after abutting against the rear end of the tire, so that the tire is lifted upwards.
In this embodiment, the locomotive of trouble car lifts up the angle less, has reduced the risk that the trouble car slided, and the security is higher in the haulage process. The dead weight of the head of the fault vehicle is borne by the bearing wheels, the gravity center of the obstacle clearing vehicle cannot move backwards, and the fault clearing vehicle is safer to run.
Example 2
In this embodiment, the fully collapsible trailer apparatus further includes a connecting seat 42 hinged to the bearing wheel 41 and the seventh connecting rod 34; the fully-folding trailer device also comprises a third oil cylinder 43 for driving the connecting seat 42 to turn; the third oil cylinder 33 and the connecting seat 42 can be connected through a link mechanism. The bearing wheel 41 can be driven to unfold or fold by arranging the connecting seat 42 and the third oil cylinder 43. In the present embodiment, after the first L-shaped assembly and the second L-shaped assembly hold the tire, the third cylinder 43 drives the connecting base 42 to lift up to lift the tire off the ground.
Example 3
In addition, the third oil cylinder 43 may be replaced by an elastic member, which connects the connecting seat 42 and the seventh connecting rod 34, and may have a shock absorption function, and may be specifically configured as a pneumatic rod, an air bag, a spring, and the like. The bearing wheel 41 may be provided on the side of the clasping portion of the third link 23 away from the cross beam 11, so that the end of the connecting beam 12 away from the cross beam 11 may be lifted by the obstacle removing vehicle to lift the tire off the ground.
Example 4
The invention also provides an obstacle removing vehicle which comprises the fully-foldable trailer device, wherein one end of the fully-foldable trailer device, which is far away from the bearing wheels 41, is connected with the tail of the obstacle removing vehicle, so that the technical problem in the technical background can be solved.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The foregoing is a more detailed description of the present invention that is presented in conjunction with specific embodiments, and the practice of the invention is not to be considered limited to those descriptions. It will be apparent to those skilled in the art that a number of simple derivations or substitutions can be made without departing from the inventive concept.
Claims (10)
1. A fully collapsible trailer apparatus, comprising:
the beam body is provided with a beam body,
the outer tire embracing mechanism comprises first L-shaped components and first oil cylinders, wherein the first L-shaped components are hinged to two ends of the beam body and are symmetrical to each other, and the first oil cylinders drive the L-shaped components to turn over and unfold;
the inner tire embracing mechanism comprises second L-shaped components which are hinged to two ends of the beam body and are symmetrical to each other, and a second oil cylinder which drives the L-shaped components to overturn and unfold;
the bearing wheel is arranged at one end, far away from the beam body, of the first L-shaped assembly;
under the working state, the first L-shaped component and the second L-shaped component are unfolded and oppositely arranged, and are constructed into a containing frame for bearing the tire.
2. The fully collapsible trailer apparatus of claim 1, wherein said second L-shaped assembly is a parallelogram linkage.
3. The fully collapsible trailer apparatus of claim 2, wherein said second L-shaped group comprises:
one end of the first connecting rod is hinged with the beam body;
the second connecting rod is arranged on one side of the first connecting rod, and one end of the second connecting rod is hinged with the beam body;
the third connecting rod comprises a connecting part and a holding part, and one ends of the first connecting rod and the second connecting rod, which are far away from the beam body, are hinged with the connecting part;
and two ends of the second oil cylinder are respectively connected with the two first connecting rods.
4. The fully collapsible trailer apparatus of claim 1, wherein said first L-shaped assembly is a parallelogram linkage.
5. The fully collapsible trailer apparatus of claim 4, wherein said first L-shaped assembly comprises:
one end of the fourth connecting rod is hinged with the beam body;
the fifth connecting rod is arranged on one side of the fourth connecting rod, and one end of the fifth connecting rod is hinged with the beam body;
the sixth connecting rod is hinged with one ends, far away from the beam body, of the fourth connecting rod and the fifth connecting rod respectively;
one end of the seventh connecting rod is hinged to the fourth connecting rod, and one part of the seventh connecting rod, which is far away from the fourth connecting rod, is hinged to one end of the sixth connecting rod, which is far away from the fourth connecting rod and the fifth connecting rod.
6. The fully collapsible trailer apparatus of claim 5, wherein said beam body is a T-shaped beam and comprises a cross beam and a connecting beam disposed perpendicular to said cross beam, said first L-shaped assembly is disposed at both ends of said cross beam, one end of said first cylinder is hinged to said connecting beam, and the other end is hinged to said fifth link.
7. The fully collapsible trailer apparatus of claim 1, wherein said beam body is a T-beam comprising a cross beam and a connecting beam disposed perpendicular to said cross beam, said first L-shaped component disposed on one side of said cross beam and said second L-shaped component disposed on the other side of said cross beam.
8. The fully collapsible trailer apparatus of claim 1, further comprising a connecting base hingedly connected to the load bearing wheels and the first L-shaped member, respectively, and a third cylinder for driving the connecting base to tilt.
9. The fully collapsible trailer apparatus of claim 1, further comprising a coupling base hingedly coupled to said load bearing wheels and said first L-shaped member, respectively; the fully-foldable trailer device further comprises an elastic piece for connecting the connecting seat and the seventh connecting rod.
10. A wrecker comprising a fully collapsible trailer arrangement according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110028062.3A CN112590650B (en) | 2021-01-11 | 2021-01-11 | Full-folding trailer device and wrecker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110028062.3A CN112590650B (en) | 2021-01-11 | 2021-01-11 | Full-folding trailer device and wrecker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112590650A true CN112590650A (en) | 2021-04-02 |
| CN112590650B CN112590650B (en) | 2022-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110028062.3A Active CN112590650B (en) | 2021-01-11 | 2021-01-11 | Full-folding trailer device and wrecker |
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| CN (1) | CN112590650B (en) |
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| CN2480229Y (en) * | 2001-06-20 | 2002-03-06 | 广东粤海汽车有限公司 | Tyre-holding lifting mechanism for obstacle-removing vehicle |
| US20040105746A1 (en) * | 2001-10-29 | 2004-06-03 | Pablo Nolasco | Wheel lift with laterally movable, rotatable swivel arm wheel scoops |
| CN2628332Y (en) * | 2003-08-08 | 2004-07-28 | 三一汽车制造有限公司 | Automatic clasping tyre mechanism for obstruction-clearing vehicle |
| US20060181052A1 (en) * | 2004-11-19 | 2006-08-17 | Jerr-Dan | Folding wheel retainer for wheel lift system |
| CN201646521U (en) * | 2010-05-06 | 2010-11-24 | 沈阳北方重型机械有限公司 | Hydraulic support device of wrecker |
| CN102211539A (en) * | 2010-06-25 | 2011-10-12 | 叶伟兵 | Mini road dragging wrecker |
| CN202130363U (en) * | 2011-06-09 | 2012-02-01 | 王永磊 | Trailer frame |
| CN204383432U (en) * | 2014-12-31 | 2015-06-10 | 广东粤海汽车有限公司 | The collapsible automatic wheel holding mechanism of wrecker |
| TWM523608U (en) * | 2015-09-24 | 2016-06-11 | xin-liang Ye | Automatic lifting and balance device for pallet trucks |
| CN205800897U (en) * | 2016-05-28 | 2016-12-14 | 江阴市汽车改装厂 | Obstacles removing car and propons fixing device thereof |
| CN211364384U (en) * | 2019-12-17 | 2020-08-28 | 程力专用汽车股份有限公司 | Automatic arm-holding bouncing-off device of rear supporting arm of pick up wrecker |
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2021
- 2021-01-11 CN CN202110028062.3A patent/CN112590650B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2480229Y (en) * | 2001-06-20 | 2002-03-06 | 广东粤海汽车有限公司 | Tyre-holding lifting mechanism for obstacle-removing vehicle |
| US20040105746A1 (en) * | 2001-10-29 | 2004-06-03 | Pablo Nolasco | Wheel lift with laterally movable, rotatable swivel arm wheel scoops |
| CN2628332Y (en) * | 2003-08-08 | 2004-07-28 | 三一汽车制造有限公司 | Automatic clasping tyre mechanism for obstruction-clearing vehicle |
| US20060181052A1 (en) * | 2004-11-19 | 2006-08-17 | Jerr-Dan | Folding wheel retainer for wheel lift system |
| CN201646521U (en) * | 2010-05-06 | 2010-11-24 | 沈阳北方重型机械有限公司 | Hydraulic support device of wrecker |
| CN102211539A (en) * | 2010-06-25 | 2011-10-12 | 叶伟兵 | Mini road dragging wrecker |
| CN202130363U (en) * | 2011-06-09 | 2012-02-01 | 王永磊 | Trailer frame |
| CN204383432U (en) * | 2014-12-31 | 2015-06-10 | 广东粤海汽车有限公司 | The collapsible automatic wheel holding mechanism of wrecker |
| TWM523608U (en) * | 2015-09-24 | 2016-06-11 | xin-liang Ye | Automatic lifting and balance device for pallet trucks |
| CN205800897U (en) * | 2016-05-28 | 2016-12-14 | 江阴市汽车改装厂 | Obstacles removing car and propons fixing device thereof |
| CN211364384U (en) * | 2019-12-17 | 2020-08-28 | 程力专用汽车股份有限公司 | Automatic arm-holding bouncing-off device of rear supporting arm of pick up wrecker |
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| Publication number | Publication date |
|---|---|
| CN112590650B (en) | 2022-01-07 |
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