CN112572371A - Tractor capable of being operated reversely - Google Patents
Tractor capable of being operated reversely Download PDFInfo
- Publication number
- CN112572371A CN112572371A CN202011425920.XA CN202011425920A CN112572371A CN 112572371 A CN112572371 A CN 112572371A CN 202011425920 A CN202011425920 A CN 202011425920A CN 112572371 A CN112572371 A CN 112572371A
- Authority
- CN
- China
- Prior art keywords
- fixedly connected
- cylinder
- hydraulic
- tractor
- fixing seat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003137 locomotive effect Effects 0.000 claims abstract description 18
- 230000002441 reversible effect Effects 0.000 claims abstract description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 20
- 239000000956 alloy Substances 0.000 claims description 11
- 239000010935 stainless steel Substances 0.000 claims description 11
- 229910001220 stainless steel Inorganic materials 0.000 claims description 11
- 229910045601 alloy Inorganic materials 0.000 claims description 10
- 229910052742 iron Inorganic materials 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 claims description 2
- 230000005484 gravity Effects 0.000 claims description 2
- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 230000035939 shock Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 238000011065 in-situ storage Methods 0.000 abstract description 5
- 238000007789 sealing Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000013016 damping Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S9/00—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks
- B60S9/14—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks for both lifting and manoeuvring
- B60S9/205—Power driven manoeuvring fittings, e.g. reciprocably driven steppers or rotatably driven cams
Abstract
The invention discloses a tractor capable of being operated in a reversible mode, which comprises a tractor head, wherein a first mounting bar is fixedly connected to the front side of the tractor head, a second mounting bar is fixedly connected to the rear side of the tractor head, a rotary table is movably connected to the bottom of the tractor head, a hydraulic cylinder is fixedly connected to the lower surface of the rotary table, a mounting plate is fixedly connected to the bottom end of the hydraulic cylinder, four corners of the mounting plate are movably connected with supporting frames through supporting shafts, supporting legs are fixedly connected to the bottom ends of the supporting frames, and a gear ring is fixedly connected to the surface of the rotary. This kind of tractor of reversible manipulation lifts the locomotive through pneumatic cylinder cooperation support frame and supporting legs for the locomotive is unsettled, then drives bevel gear rotatory through gear motor, under the meshing of bevel gear and ring gear, makes the locomotive rotatory around the carousel, thereby can make the locomotive can turn to in situ, makes the tractor also can be free when traveling in constrictive field path turn around, has reached the effect of convenient operation.
Description
Technical Field
The invention relates to the technical field of agriculture, in particular to a tractor capable of being operated in a reversible mode.
Background
A tractor is a self-propelled power machine used for towing and driving a working machine to complete various mobile operations. Can also be used as fixed operation power. The system or the device comprises an engine, a transmission system, a walking system, a steering system, a hydraulic suspension system, a power output system, an electric instrument system, a driving control system, a traction system and the like. The power of the engine is transmitted to the driving wheel by the transmission system, so that the tractor runs, and in real life, a rubber belt is commonly used as a medium for power transmission. Tractors classified into agricultural, industrial and special uses according to function and use; the tractor is divided into a wheel type tractor, a crawler type tractor, a boat-shaped tractor, a self-propelled chassis and the like according to the structure type.
The tractor as a common agricultural machine is usually operated on various field roads, and the field roads are generally simple and crude, so that the tractor is difficult to turn around during running, and the operation difficulty of the tractor is high during operation.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, the present invention provides a tractor capable of being operated in a reversible manner to solve the above-mentioned problem of the prior art that the tractor is difficult to turn around on a field path.
In order to achieve the above and other related objects, the invention provides a tractor capable of being operated in a reverse direction, which comprises a tractor head, wherein a first mounting bar is fixedly connected to the front side of the tractor head, a second mounting bar is fixedly connected to the rear side of the tractor head, a rotary table is movably connected to the bottom of the tractor head, a hydraulic cylinder is fixedly connected to the lower surface of the rotary table, a mounting plate is fixedly connected to the bottom end of the hydraulic cylinder, four corners of the mounting plate are movably connected with a support frame through support shafts, support legs are fixedly connected to the bottom end of the support frame, a gear ring is fixedly connected to the surface of the rotary table, a groove is formed in the bottom of the tractor head, a speed reduction motor is fixedly connected in the groove, a.
Optionally, the hydraulic cylinder includes: a first cylinder;
the first cylinder body comprises a cavity part fixedly connected with an external shock absorption shaft;
the hydraulic device also comprises a first hydraulic device;
the first hydraulic device comprises a first hydraulic shaft; the first hydraulic device is fixedly connected with the first cylinder through the first hydraulic shaft;
a first elastic assembly is further arranged on the outer side of the first hydraulic shaft;
one end of the first elastic component is fixedly connected with the first cylinder, and the other end of the first elastic component is fixedly connected with the first hydraulic device;
the first cylinder body also comprises a first fixed seat fixedly connected with an external motorcycle frame;
the first hydraulic device also comprises a second fixed seat fixedly connected with an external motorcycle frame.
Optionally, the first fixed seat and the first cylinder are integrally cast;
the second fixed seat and the first hydraulic device are integrally cast and molded;
the first fixed seat and the first cylinder are fixedly welded;
the second fixed seat and the first hydraulic device are fixed in a welding mode.
Optionally, the first cylinder is an alloy cylinder, a stainless steel cylinder or an iron cylinder;
the first fixed seat is an alloy fixed seat, a stainless steel fixed seat or an iron fixed seat;
the second fixing seat is an alloy fixing seat, a stainless steel fixing seat or an iron fixing seat.
Optionally, the lower surface of the mounting plate is provided with a clamping groove, and the depth of the clamping groove is greater than the width of the support frame.
Optionally, the supporting legs are in an i shape, triangular reinforcing ribs are fixedly connected to the periphery of the supporting legs, and corrugated bottoms are arranged on the lower surfaces of the supporting legs.
Optionally, the first mounting bar is identical to the second mounting bar.
Optionally, the turntable is arranged at the center of gravity of the vehicle head.
Optionally, a retractable door is arranged at the bottom of the vehicle head.
Optionally, the first mounting bar comprises a bearing rod, the surface of the bearing rod is fixedly connected with a dragging hook, and the dragging hook is uniformly arranged on the surface of the bearing rod at equal intervals.
As described above, the present invention provides a tractor which can be operated in a reversible manner, and has the following advantageous effects: according to the invention, the hydraulic cylinder is matched with the support frame and the support legs to lift the head, so that the head is suspended, then the bevel gear is driven to rotate by the speed reducing motor, and the head rotates around the turntable under the meshing action of the bevel gear and the gear ring, so that the head can be steered in situ, the tractor can freely turn around when running on a narrow field path, and the effect of convenient operation is achieved.
Drawings
FIG. 1 is a schematic cross-sectional side view of the present invention;
FIG. 2 is an enlarged view of the invention at A in FIG. 1;
FIG. 3 is a schematic view of the structure of the supporting foot of the present invention;
FIG. 4 is a schematic perspective view of the hydraulic cylinder;
FIG. 5 is a schematic front view of the hydraulic cylinder;
fig. 6 is a schematic sectional view taken along the line a-a in fig. 5.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the 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 construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 in specific cases to those skilled in the art.
Referring to fig. 1 to 6, the present invention provides a technical solution: the utility model provides a tractor of reversible manipulation, including locomotive 1, the first installation thick stick 2 of front side fixedly connected with of locomotive 1, rear side fixedly connected with second installation thick stick 3 of locomotive 1, the bottom swing joint of locomotive 1 has carousel 9, the lower fixed surface of carousel 9 is connected with pneumatic cylinder 4, the bottom fixedly connected with mounting panel 5 of pneumatic cylinder 4, 6 swing joint of back shaft have support frame 7 in the four corners of mounting panel 5, the bottom fixedly connected with supporting legs 8 of support frame 7, the fixed surface of carousel 9 is connected with the ring gear 10, recess 11 has been seted up to the bottom of locomotive 1, fixedly connected with gear motor 12 in the recess 11, gear motor 12's output shaft fixedly connected with bevel gear 13, bevel gear 13 meshes with ring gear 10.
According to the invention, the hydraulic cylinder is matched with the support frame and the support legs to lift the head, so that the head is suspended, then the bevel gear is driven to rotate by the speed reducing motor, and the head rotates around the turntable under the meshing action of the bevel gear and the gear ring, so that the head can be steered in situ, the tractor can freely turn around when running on a narrow field path, and the effect of convenient operation is achieved.
In this application embodiment, the pneumatic cylinder includes: a first barrel 42; the first cylinder 42 includes a cavity 410 fixedly connected to the outer damping shaft; the invention is connected with a damping shaft in a motorcycle frame through a cavity part 410; a first hydraulic device 46 is also included; the first hydraulic device 46 includes a first hydraulic shaft 44; the contact part of the first hydraulic shaft 44 and the first hydraulic device 46 comprises a sealing ring 45 for sealing; the sealing ring 45 of the present invention may be a rubber sealing ring or a silica gel sealing ring.
The first hydraulic device 46 is fixedly connected with the first cylinder 42 through the first hydraulic shaft 44; a first elastic assembly 43 is further arranged on the outer side of the first hydraulic shaft 44; the first elastic member 43 in the present invention is a spring, and the spring in the present invention is a stainless steel spring, an alloy spring, or an iron spring. One end of the first elastic assembly 43 is fixedly connected with the first cylinder 42, and the other end is fixedly connected with the first hydraulic device 46; the first cylinder 41 further comprises a first fixed seat 41 fixedly connected with an external motorcycle frame; the first fixing seat 41 comprises a plurality of first fixing through holes 48, and the first fixing through holes 48 are circular through holes; the number of the first fixing through holes 48 is 46. The first fixing seat 41 and the first cylinder 42 may be integrally cast or the first fixing seat 41 and the first cylinder 42 may be welded and fixed.
The first hydraulic device 46 further comprises a second fixed seat 47 fixedly connected with the external motorcycle frame. The second fixing seat 47 is provided with a plurality of second fixing through holes 49, the second fixing through holes 49 are circular arc-shaped through holes, and the number of the second fixing through holes 49 is 45. The second fixing seat 47 and the first hydraulic device 46 are integrally cast or the second fixing seat 47 and the first hydraulic device 46 are welded and fixed.
The first cylinder 42 is an alloy cylinder, a stainless steel cylinder or an iron cylinder; the first fixing seat 41 is an alloy fixing seat, a stainless steel fixing seat or an iron fixing seat; the second fixing seat 47 is an alloy fixing seat, a stainless steel fixing seat or an iron fixing seat. Because the barrel and the fixed seat are made of alloy materials, stainless steel waiting materials or pig iron materials, the material hardness is proper, the cost is low, and the service life is longer.
In the embodiment of the application, the clamping groove is formed in the lower surface of the mounting plate 5, the depth of the clamping groove is larger than the width of the support frame 7, the mounting plate 5 is arranged to be hollow and used for accommodating the support frame 7, and therefore the space is greatly saved, the support frame 7 does not occupy space and is protected when not applicable.
In the embodiment of this application, the shape of supporting legs 8 is "worker" font, and supporting legs 8 fixedly connected with triangle-shaped's all around strengthening rib 14, the lower surface of supporting legs 8 is provided with at the bottom of the ripple, supporting legs 8 sets up to "worker" font increase strength, avoids damaging, sets up strengthening rib 14 and improves supporting legs 8's bearing capacity once more, sets up at the bottom of the ripple and improves supporting legs 8's ability of grabbing ground, avoids supporting legs 8 to grab ground power not enough and makes carousel 9 relative ground produce the rotation.
In the embodiment of the application, the first mounting bar 2 is the same as the second mounting bar 3, the first mounting bar 2 and the second mounting bar 3 are used for mounting the carriage, and the carriage is convenient to switch back and forth after the head 1 is turned.
In this application embodiment, carousel 9 sets up the focus department at locomotive 1, and after locomotive 1 jack-up, the weight of locomotive 1 falls on carousel 9 completely, avoids jack-up locomotive 1 back to produce the slope because of the focus is unstable with carousel 9 setting in focus department.
In this application embodiment, the bottom of locomotive 1 is provided with flexible door 15, sets up flexible door 15 and can avoid going the in-process sewage mud entering at the tractor, has kept the clean and tidy of apparatus.
In the embodiment of the present application, the first mounting bar 2 includes a bearing bar 21, a towing hook 22 is fixedly connected to a surface of the bearing bar 21, and the towing hooks 22 are uniformly disposed on the surface of the bearing bar 21 at equal intervals.
The working principle is as follows: when using, it is rotatory around back shaft 6 with support frame 7, make support frame 7 open, start hydraulic cylinder 4, make hydraulic cylinder 4 with locomotive 1 jack-up, four wheels unsettled backs of locomotive 1 start gear motor 12, gear motor 12 drives bevel gear 13 and rotates, thereby make bevel gear 13 be circular motion along ring gear 10, thereby make locomotive 1 rotation, like this, can turn round in situ when the tractor uses, requirement greatly reduced to the space. The tractor head is lifted by the hydraulic cylinder matched with the support frame and the support legs, so that the tractor head is suspended, the bevel gear is driven to rotate by the speed reducing motor, and the tractor head rotates around the turntable under the meshing action of the bevel gear and the gear ring, so that the tractor head can be steered in situ, the tractor can be freely turned when running on a narrow field path, and the effect of convenient operation is achieved.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. A tractor that can reverse manipulation, includes locomotive (1), its characterized in that: a first mounting bar (2) is fixedly connected with the front side of the headstock (1), a second mounting bar (3) is fixedly connected with the rear side of the headstock (1), the bottom of the headstock (1) is movably connected with a turntable (9), the lower surface of the turntable (9) is fixedly connected with a hydraulic cylinder (4), the bottom end of the hydraulic cylinder (4) is fixedly connected with a mounting plate (5), four corners of the mounting plate (5) are movably connected with supporting frames (7) through supporting shafts (6), the bottom end of the supporting frame (7) is fixedly connected with a supporting leg (8), the surface of the turntable (9) is fixedly connected with a gear ring (10), a groove (11) is formed in the bottom of the headstock (1), a speed reducing motor (12) is fixedly connected in the groove (11), an output shaft of the speed reducing motor (12) is fixedly connected with a bevel gear (13), and the bevel gear (13) is meshed with the gear ring (10).
2. A reversible tractor according to claim 1, wherein: the hydraulic cylinder comprises: a first cylinder (42);
the first cylinder (42) comprises a cavity part (410) fixedly connected with an external shock absorption shaft;
also comprises a first hydraulic device (46);
the first hydraulic device (46) comprises a first hydraulic shaft (44); the first hydraulic device (46) is fixedly connected with the first cylinder (42) through the first hydraulic shaft (44);
a first elastic assembly (43) is further arranged on the outer side of the first hydraulic shaft (44);
one end of the first elastic assembly (43) is fixedly connected with the first cylinder (42), and the other end of the first elastic assembly is fixedly connected with the first hydraulic device (46);
the first cylinder (41) is also provided with a first fixed seat (41) fixedly connected with an external motorcycle frame;
the first hydraulic device (46) also comprises a second fixed seat (47) fixedly connected with an external motorcycle frame.
3. A reversible tractor according to claim 2, wherein: the first fixed seat (41) and the first cylinder (42) are integrally cast and molded;
the second fixed seat (47) and the first hydraulic device (46) are integrally cast and molded;
the first fixed seat (41) and the first cylinder (42) are fixed in a welding mode;
the second fixed seat (47) and the first hydraulic device (46) are fixed in a welding mode.
4. A reversible tractor according to claim 2 or 3, wherein: the first cylinder (42) is an alloy cylinder, a stainless steel cylinder or an iron cylinder;
the first fixing seat (41) is an alloy fixing seat, a stainless steel fixing seat or an iron fixing seat;
the second fixing seat (47) is an alloy fixing seat, a stainless steel fixing seat or an iron fixing seat.
5. A reversible tractor according to claim 1, wherein: the lower surface of the mounting plate (5) is provided with a clamping groove, and the depth of the clamping groove is greater than the width of the support frame (7).
6. A reversible tractor according to claim 1, wherein: the supporting legs (8) are I-shaped, triangular reinforcing ribs (14) are fixedly connected to the periphery of the supporting legs (8), and corrugated bottoms are arranged on the lower surfaces of the supporting legs (8).
7. A reversible tractor according to claim 1, wherein: the first mounting bar (2) is identical to the second mounting bar (3).
8. A reversible tractor according to claim 1, wherein: the rotary table (9) is arranged at the gravity center of the vehicle head (1).
9. A reversible tractor according to claim 3, wherein: the bottom of the vehicle head (1) is provided with a telescopic door (15).
10. A reversible tractor according to claim 1, wherein: first installation thick stick (2) are including bearing bar (21), the surperficial fixedly connected with of bearing bar (21) drags and carries couple (22), drag and carry couple (22) with the equidistance evenly set up on the surface of bearing bar (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011425920.XA CN112572371A (en) | 2020-12-09 | 2020-12-09 | Tractor capable of being operated reversely |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011425920.XA CN112572371A (en) | 2020-12-09 | 2020-12-09 | Tractor capable of being operated reversely |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112572371A true CN112572371A (en) | 2021-03-30 |
Family
ID=75127765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011425920.XA Pending CN112572371A (en) | 2020-12-09 | 2020-12-09 | Tractor capable of being operated reversely |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112572371A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR910005739U (en) * | 1989-09-26 | 1991-04-22 | 김오영 | Lifting and rotating device of small car |
| KR19980053679U (en) * | 1996-12-31 | 1998-10-07 | 박병재 | Vehicle rotator |
| JP3060125U (en) * | 1998-09-10 | 1999-07-30 | 佐賀 美津子 | Direction change device for four-wheeled vehicles |
| CN101108613A (en) * | 2005-09-23 | 2008-01-23 | 方逸民 | Apparatus for turning car at its staying place |
| CN101823475A (en) * | 2009-12-30 | 2010-09-08 | 李坚 | Self-rescue and in-situ turn-around or turning device for car |
| CN103434498A (en) * | 2013-08-22 | 2013-12-11 | 泉州迪特工业产品设计有限公司 | Supporting steering device for automobile |
| CN104859390A (en) * | 2015-06-10 | 2015-08-26 | 石家庄铁道大学 | Rotatable chassis of road and rail double-purpose rail dust removing vehicle |
| CN204605761U (en) * | 2015-04-26 | 2015-09-02 | 吴皎君 | The convenient pivot turn device of a kind of automobile |
| CN105015510A (en) * | 2015-08-24 | 2015-11-04 | 王绍明 | Auxiliary rotating device for narrow space |
| KR20170077009A (en) * | 2015-12-27 | 2017-07-05 | 이정용 | The vehicle to integrate a hydraulic jack |
-
2020
- 2020-12-09 CN CN202011425920.XA patent/CN112572371A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR910005739U (en) * | 1989-09-26 | 1991-04-22 | 김오영 | Lifting and rotating device of small car |
| KR19980053679U (en) * | 1996-12-31 | 1998-10-07 | 박병재 | Vehicle rotator |
| JP3060125U (en) * | 1998-09-10 | 1999-07-30 | 佐賀 美津子 | Direction change device for four-wheeled vehicles |
| CN101108613A (en) * | 2005-09-23 | 2008-01-23 | 方逸民 | Apparatus for turning car at its staying place |
| CN101823475A (en) * | 2009-12-30 | 2010-09-08 | 李坚 | Self-rescue and in-situ turn-around or turning device for car |
| CN103434498A (en) * | 2013-08-22 | 2013-12-11 | 泉州迪特工业产品设计有限公司 | Supporting steering device for automobile |
| CN204605761U (en) * | 2015-04-26 | 2015-09-02 | 吴皎君 | The convenient pivot turn device of a kind of automobile |
| CN104859390A (en) * | 2015-06-10 | 2015-08-26 | 石家庄铁道大学 | Rotatable chassis of road and rail double-purpose rail dust removing vehicle |
| CN105015510A (en) * | 2015-08-24 | 2015-11-04 | 王绍明 | Auxiliary rotating device for narrow space |
| KR20170077009A (en) * | 2015-12-27 | 2017-07-05 | 이정용 | The vehicle to integrate a hydraulic jack |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210330 |
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| RJ01 | Rejection of invention patent application after publication |