CN112440265A - Trolley for vehicle bottom operation - Google Patents
Trolley for vehicle bottom operation Download PDFInfo
- Publication number
- CN112440265A CN112440265A CN201910831699.9A CN201910831699A CN112440265A CN 112440265 A CN112440265 A CN 112440265A CN 201910831699 A CN201910831699 A CN 201910831699A CN 112440265 A CN112440265 A CN 112440265A
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- Prior art keywords
- gear
- driving
- supporting plate
- driven shaft
- shaft
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
- B25H5/00—Tool, instrument or work supports or storage means used in association with vehicles; Workers' supports, e.g. mechanics' creepers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
Abstract
The invention discloses a trolley for vehicle bottom operation, which comprises a supporting plate and rollers for supporting the supporting plate, wherein the supporting plate comprises a front half part and a rear half part, the front half part and the rear half part are connected through a turnover mechanism, and the turnover mechanism comprises a support arranged on the rear half part, a rotating mechanism arranged on the support and a telescopic mechanism. In operation, before the front half supporting plate is turned upwards, the front half supporting plate is far away from the rear half supporting plate and is pulled away from the rear half supporting plate by a certain distance, so that the front half supporting plate which is turned upwards cannot interfere with the rear half supporting plate; after the first half fagging overturns downwards and resets, first half fagging removes to first half fagging backward, and is in the same place with latter half fagging amalgamation, avoids having the clearance between the two, improves operation workman's travelling comfort.
Description
Technical Field
The invention relates to the technical field of traffic, in particular to the field of motor vehicles.
Background
The automobile with heavy automobile body needs the large wheel hub to be matched with the large tire to support the automobile, or the automobile with high automobile body gravity center has larger height difference between the ground and the automobile body bottom, and a worker can enter the space between the ground and the automobile body bottom in a lying posture to overhaul parts at the automobile body bottom. The underbody is not a plane but an irregular shape, and some parts are mounted on the side of another part, so that a worker needs to raise his head to observe it or to perform maintenance using a tool. Generally, it is known that people raise their heads up when lying down, which is a strenuous task and can feel sore necks after staying for a long time.
Disclosure of Invention
The technical problems solved by the invention are as follows: head support can be provided for a worker working under the vehicle body.
In order to solve the technical problems, the invention provides the following technical scheme: a trolley for vehicle bottom operation comprises a supporting plate and rollers for supporting the supporting plate, wherein the supporting plate comprises a front half supporting plate and a rear half supporting plate which are connected through a turnover mechanism; the turnover mechanism comprises a bracket, a rotating mechanism and a telescopic mechanism; the rotating mechanism comprises a rotating frame, the rotating frame is hinged to a support, a first guide groove is formed in the rotating frame, a second guide groove is formed in the support, and the first guide groove and the second guide groove can be communicated in a front-back mode; the bottom of the front half supporting plate is provided with a connecting frame, the connecting frame is matched in the first guide groove and can extend into the second guide groove, and the support is arranged at the bottom of the rear half supporting plate; the telescopic mechanism is installed on the support, and the lifting and contracting mechanism drives the connecting frame to linearly move along the first guide groove and the second guide groove which are communicated front and back.
In the technical scheme, the connecting frame part is clamped into the first guide groove, the part can slide in the first guide groove, and the part can be in sliding fit with the second guide groove.
In the initial state, the front half supporting plate and the rear half supporting plate are in a horizontal state, and the front half supporting plate and the rear half supporting plate have no gap or have a smaller gap, so that the comfort of a worker lying on the supporting plates is not influenced. At the moment, the first guide groove and the second guide groove are in front-back butt joint and are in a horizontal state, and the connecting frame is matched in the first guide groove and the second guide groove.
When the upper half body or the head of a worker lying on the supporting plate needs to lean against the front half supporting plate obliquely, the turnover mechanism is actuated (such as a start button is pressed), the telescopic mechanism is actuated to actuate the connecting frame, and the connecting frame moves linearly along the second guide groove and the first guide groove, so that the front half supporting plate moves forwards for a certain distance and is far away from the rear half supporting plate. When the connecting frame is completely separated from the second guide groove and is left in the first guide groove, the rotating frame drives the connecting frame to rotate. The swivel mount may be mounted on a swivel shaft mounted on a support. The rotating shaft may be driven by a motor.
The swivel mount drives the link up-rotation 0 degree to 45 degrees, and correspondingly, the link drives the first half fagging up-rotation 0 degree to 45 degrees. In this manner, the worker can lean against or lean his head on the front half stay.
When the workman need lie flat, rotary mechanism drive link antiport, first half fagging resumes to the horizontality, and first guide way and second guide way link up end to end again, first guide way and second guide way intercommunication, telescopic machanism drive link retract the second guide way in backward, and the link drives first half fagging and moves certain distance backward, makes first half fagging and latter half fagging amalgamation together.
According to the turnover mechanism, before the front half supporting plate is turned upwards, the front half supporting plate is far away from the rear half supporting plate and is pulled away from the rear half supporting plate by a certain distance, so that the front half supporting plate turned upwards cannot interfere with the rear half supporting plate; after the first half fagging overturns downwards and resets, the first half fagging moves to the first half fagging of back, and is in the same place with the concatenation of latter half fagging, avoids having the clearance between the two.
Drawings
The invention is further described below with reference to the accompanying drawings:
FIG. 1 is a schematic view of the front and rear half of the stay plate without a gap or with a small gap;
FIG. 2 is a schematic view of the front half of FIG. 1, shown turned up;
FIG. 3 is a schematic view showing a gap between the front half and the rear half of the stay plate being relatively large;
FIG. 4 is a schematic view of the front half of FIG. 3, shown turned up;
FIG. 5 is a schematic view of a cart for underbody operation according to the present invention;
FIG. 6 is a schematic view showing the front half gusset first spaced apart from the rear half gusset before the front half gusset is flipped up in FIG. 5;
fig. 7 is a schematic view of the front half spreader plate of fig. 6 after being flipped up;
FIG. 8 is a schematic view of the canting mechanism;
FIG. 9 is an exploded view of FIG. 8;
fig. 10 is a schematic view of a rotary mechanism;
FIG. 11 is a schematic view of the rotating mechanism after the barrel 18 is hidden;
FIG. 12 is a schematic view of a cartridge;
FIG. 13 is an exploded view of FIG. 11;
FIG. 14 is a schematic view of either one of a pair of drive assemblies.
The symbols in the drawings illustrate that:
10. a rotation mechanism; 11. a base plate; 112. an upper disc; 113. a lower disc; 114. positioning a rod;
12. a drive shaft;
131. a first driven shaft; 132. a second driven shaft;
1401. a first drive assembly; 1402. a second drive assembly; 140. a drive gear; 141. a locking assembly base; 142. a locking slide block; 143. a locking fitting; 144. connecting a bracket; 145. a drive gear shaft; 146. a concave structure; 147. rotating the block;
1511. a first turntable; 1512. a first ring gear; 1521. a second turntable; 1522. a second ring gear;
161. a driving gear; 162. a transfer gear; 163. an internal gear;
171. a second gear;
18. a tubular member; 181. a first locking member; 182. a second lock;
21. a front half supporting plate; 22. a rear half supporting plate;
30. a turnover mechanism; 31. a support; 32. a rotating frame; 320. a rotating structure; 321. a first lug; 322. a second lug; 33. a first guide groove; 34. a second guide groove;
40. a connecting frame; 41. a connecting portion; 42. a guide portion;
51. a first gear; 52. an intermediate gear; 53. a common rack; 54. a rotating shaft;
61. interference areas of the front half supporting plate and the rear half supporting plate; 62. a larger gap is formed between the front half supporting plate and the rear half supporting plate;
70. and a roller.
Detailed Description
Referring to fig. 5, the trolley for vehicle bottom operation comprises a supporting plate and rollers (70) for supporting the supporting plate, wherein the supporting plate comprises a front half supporting plate 21 and a rear half supporting plate 22, and the front half supporting plate and the rear half supporting plate are connected through a turnover mechanism 30.
Referring to fig. 8 to 14, the turnover mechanism includes a bracket 31, a rotation mechanism, and a telescopic mechanism.
The rotating mechanism comprises a rotating frame 32, the rotating frame is hinged on a support, the rotating frame is provided with a first guide groove 33, the support 31 is provided with a second guide groove 34, and the first guide groove and the second guide groove can be communicated front and back;
the bottom of the front half supporting plate is provided with a connecting frame 40, the connecting frame is matched in the first guide groove and can extend into the second guide groove, and the bracket is arranged at the bottom of the rear half supporting plate;
the telescopic mechanism is installed on the support, and the lifting and contracting mechanism drives the connecting frame to linearly move along the first guide groove and the second guide groove which are communicated front and back.
The rotating mechanism comprises a driving shaft 12, a first driven shaft 131 and a second driven shaft 132, wherein the driving shaft drives the first driven shaft and the second driven shaft; the second driven shaft is provided with a second gear 171, and the rotating frame 32 is provided with a gear structure 320 which is meshed with the second gear.
The telescopic mechanism comprises a first gear 51, an intermediate gear 52 and a common rack 53, wherein the first gear is arranged on a first driven shaft, the intermediate gear is meshed with the first gear, the intermediate gear is arranged on a rotating shaft 54, the intermediate gear is meshed with the common rack, the rotating frame 32 is arranged on the rotating shaft, and the common rack is arranged on the connecting frame 40.
The rotating mechanism further comprises a base plate 11, a driving shaft 12 and a first driven shaft 131 are positioned at the head end of the base plate, and a second driven shaft 132 is positioned at the tail end of the base plate; the first driven shaft is pivoted on the base plate, the first driven shaft is hollow, the driving shaft is inserted into the first driven shaft, and the driving shaft can rotate relative to the first driven shaft.
The driving shaft is connected with the power transmission assembly, the power transmission assembly is connected with the rotating block 147, a pair of driving assemblies are arranged on the rotating block, and the power transmission assembly drives the pair of driving assemblies to do circular rotation motion with motion tracks; the first drive unit 1401 of the pair is located at the leading end of the substrate and the second drive unit 1402 of the pair is located at the trailing end of the substrate, the first drive unit being identical in construction to the second drive unit.
Either drive assembly includes a drive gear 140 and a drive gear locking assembly.
A first rotating disc 1511 is arranged on the first driven shaft, a first gear ring 1512 is arranged on the first rotating disc, and the first gear ring is meshed with a driving gear of the first driving assembly; a second rotating disc 1521 is arranged on the second driven shaft, a second gear ring 1522 is arranged on the second rotating disc, and the second gear ring is meshed with a driving gear of the second driving assembly.
The periphery of the base plate is provided with a cylinder part 18, a pair of driving components are positioned in the cylinder part, and the inner side wall of the cylinder part is provided with a first locking part 181 and a second locking part 182; the first locking piece enables the driving gear locking component to lock the driving gear of the first driving component by contacting with the driving gear locking component of the first driving component; the second locking member enables the driving gear locking assembly to lock the driving gear of the second driving assembly by contacting with the driving gear locking assembly of the second driving assembly.
The motor provides power for the head end of the driving shaft, and the motor is arranged on the bracket 31; the barrel is mounted on a support.
The driving gear locking assembly comprises a locking assembly base 141, a locking sliding block 142 and a locking accessory 143, the locking assembly base is connected with the power transmission assembly through a connecting support 144, the locking sliding block is in sliding fit with the locking assembly base and is elastically connected with the locking assembly base, the locking accessory is arranged on the locking sliding block, the locking sliding block can be in contact with the locking piece, specifically, the locking sliding block in the first driving assembly can be in contact with the first locking piece 181, and the locking sliding block in the second driving assembly can be in contact with the second locking piece 182. The driving gear 140 is mounted on a driving gear shaft 145, the driving gear shaft is pivoted on the locking assembly base, a concave structure 146 is formed in one end, far away from the driving gear, of the driving gear shaft, and the locking accessory can penetrate into the concave structure. Under the elastic force of the elastic member, the locking slider 142 is away from the driving gear shaft 145, and further, the locking fitting 143 is away from the concave structure 146, and the locking slider 142 partially protrudes from the locking assembly base 141. When the driving assembly and the driving gear locking assembly thereof do circular motion, the locking sliding block is contacted with the locking piece, the locking piece drives the locking sliding block and the locking fitting 143 thereon to move linearly towards the concave structure 146, the locking fitting 143 is inserted into the concave structure 146, the locking fitting 143 is in frictional contact with the concave structure 146, and the driving gear shaft 145 and the driving gear 140 thereon are locked.
The first locking member 181 and the second locking member 182 are both arc-shaped. It is a plane to establish 18 bottom planes of tube-shape spare and is a plane of projection, the orthographic projection of first locking piece on the plane of projection, its arc angle be M degree, the orthographic projection of second locking piece on the plane of projection, its arc angle be N degree, the orthographic projection of first locking piece and the orthographic projection of second locking piece constitute a complete circle, and M + N is 360 degrees promptly.
The locking fitting 143 is in the shape of a circular truncated cone, and the concave structure 146 is a tapered hole.
The power transmission assembly comprises a driving gear 161, a transfer gear 162 and an internal gear 163; the internal gear is pivoted on the base plate 11, the driving gear is installed on the driving shaft 12, the rotating block 147 is installed on the outer side wall of the internal gear, and the driving gear drives the internal gear to rotate through the transfer gear.
The base plate 11 comprises an upper plate 112 and a lower plate 113, and the upper plate and the lower plate are connected through a connecting piece; the internal gear 163 is pivoted on the upper disc 112 and is located between the upper disc and the lower disc; the inner gear comprises a pivoting part and a gear part, the pivoting part is pivoted with the upper disc piece, and the gear part is meshed with the transfer gear 162; the drive gear 161 and the intermediate gear 162 are mounted on the upper disk 112. The driving shaft 12 penetrates through the upper disc part and extends into the base disc, the first driven shaft 131 is pivoted on the upper disc part 112, the second driven shaft 132 is pivoted on the lower disc part, the second driven shaft is hollow, a positioning rod 114 is arranged in a hollow cavity of the second driven shaft, the head end of the positioning rod is connected with the lower disc part, the tail end of the positioning rod is connected to the support, and the second driven shaft can rotate relative to the positioning rod.
The rotary frame 32 is provided with a first lug 321 and a second lug 322 juxtaposed, the first lug and the second lug being mounted on the rotary shaft. Wherein the gear structure 320 is arranged on the second lug 322.
The link frame 40 includes a link portion 41 and a guide portion 42 fitted in the first guide groove 33 and capable of protruding rearward into the second guide groove 34, and the common rack gear is mounted on the guide portion 42.
The operation principle of the above-described rotation mechanism 10 is as follows. The motor drives the drive shaft 12, which drives the power transmission assembly, which drives the rotation block 147, which drives the first drive assembly 1401 and the second drive assembly 1402.
The locking slider 142 of the driving gear locking assembly in the first driving assembly contacts the first locking member 181, the locking fitting 143 of the driving gear locking assembly in the driving assembly locks the driving gear 140, the driving gear cannot rotate, and thus the driving gear 140 making circular motion drives the first rotating disk 1511 to rotate through the first gear ring 1512, and the first rotating disk drives the first driven shaft 131 to rotate.
When the first driven shaft rotates, the driving gear in the second driving assembly rotates in the circular motion at the same time, and the driving gear in the second driving assembly rotates in the circular motion at the same time.
When the locking slide block 142 in the first driving assembly is out of contact with the first locking member 181, the locking fitting 143 in the first driving assembly is reset, the locking fitting 143 is out of the concave structure 146, the first driving assembly makes circular motion, the driving gear 140 in the driving assembly rotates while making circular motion, and the rotary disk 15 and the gear ring 150 in the driving assembly are kept stationary, and accordingly, the first driven shaft is kept stationary.
When the first driven shaft is kept still, the locking slider of the driving gear locking assembly in the second driving assembly contacts with the second locking member 182, the locking fitting of the driving gear locking assembly in the driving assembly locks the driving gear, and the driving gear cannot rotate, so that the driving gear which performs circular motion drives the second rotating disc 1521 to rotate through the second gear ring 1522, and the second rotating disc drives the second driven shaft 132 to rotate.
When the locking slider of the driving gear locking assembly in the second driving assembly is separated from the second locking piece 182, the locking slider of the driving gear locking assembly in the first driving assembly is contacted with the first locking piece 181, so that the movement of the first driven shaft is linked with the movement of the second driven shaft, the first driven shaft is static, the second driven shaft moves, and the second driven shaft is static, the first driven shaft moves.
Referring to fig. 5 to 7, in actual operation, in an initial state, the front half supporting plate 21 and the rear half supporting plate 22 are in a horizontal state, the first guide groove and the second guide groove are in front-to-back communication and are in a horizontal state, and the guide portion 42 of the connecting frame 40 extends into the first guide groove and the second guide groove. And a gap is not formed between the front half supporting plate and the rear half supporting plate or is smaller.
The side wall of the supporting plate is provided with a motor button, a worker presses the motor button, the motor drives the driving shaft 12, and the rotating block 147 drives the first driving assembly 1401 and the second driving assembly 1402 to do circular motion. The locking slider 142 of the first driving assembly contacts the first locking member 181, the first driven shaft 131 rotates, the first gear 51 drives the intermediate gear 52, the intermediate gear drives the common rack 53, and the common rack drives the link guide 42 to linearly move back and forth along the first guide groove 33 and the second guide groove 34. When the guiding part of the connecting frame is completely separated from the second guiding groove 34, the locking slide block 142 in the first driving assembly is separated from the first locking part 181, the first driven shaft stops operating, and at this time, a sufficient gap is formed between the front half supporting plate 21 and the rear half supporting plate 22, so that the front half supporting plate is prevented from interfering with the rear half supporting plate after being turned upwards.
Then, the locking slider in the second driving assembly contacts with the second locking member 182, the second driven shaft 132 rotates, the second driven shaft 132 drives the rotating frame 32 to rotate, the rotating frame rotates upwards by 0-45 degrees, the rotating frame and the connecting frame are changed into an inclined state from an original horizontal longitudinal state, and an included angle between the front half supporting plate and the rear half supporting plate is 180-135 degrees.
The rotation angle of the driving shaft 12 is 360 degrees at most, i.e., one revolution.
When the first half supporting plate 21 is reset, the motor rotates reversely, the driving shaft 12 drives the second driven shaft 132 to rotate, the connecting frame 40 and the first half supporting plate 21 rotate downwards, when the first half supporting plate 21 is in a horizontal state, the second driven shaft is static, the first driven shaft starts to act, the guide part 42 of the connecting frame is driven by the first gear 51, the middle gear 52 and the common rack 53 to extend into the second guide groove 34, and the first half supporting plate and the second half supporting plate are spliced together. Wherein, a sensor can be arranged in the second guide groove 34, and when the connecting frame 40 triggers the sensor, the motor stops.
The rollers 70 are four in number and are connected to the four corners of the rear half supporting plate 22, a worker lies on the supporting plate and can translate to the lower part of the vehicle body along with the rolling of the rollers, and the front half supporting plate 21 can freely turn over relative to the rear half supporting plate.
The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description herein, since various changes and modifications can be made in the details of the embodiment and the application range according to the spirit of the present invention.
Claims (6)
1. The trolley for vehicle bottom operation comprises a supporting plate and rollers (70) for supporting the supporting plate, wherein the supporting plate comprises a front half supporting plate (21) and a rear half supporting plate (22), and the front half supporting plate and the rear half supporting plate are connected through a turnover mechanism (30); the method is characterized in that: the turnover mechanism comprises a bracket (31), a rotating mechanism and a telescopic mechanism;
the rotating mechanism comprises a rotating frame (32), the rotating frame is hinged to the support and provided with a first guide groove (33), the support (31) is provided with a second guide groove (34), and the first guide groove and the second guide groove can be communicated in a front-back mode;
the bottom of the front half supporting plate is provided with a connecting frame (40), the connecting frame is matched in the first guide groove and can extend into the second guide groove, and the bracket is arranged at the bottom of the rear half supporting plate;
the telescopic mechanism is installed on the support, and the lifting and contracting mechanism drives the connecting frame to linearly move along the first guide groove and the second guide groove which are communicated front and back.
2. The trolley for underbody operation as claimed in claim 1, wherein: the rotating mechanism comprises a driving shaft (12), a first driven shaft (131) and a second driven shaft (132), and the driving shaft drives the first driven shaft and the second driven shaft;
a second gear (171) is mounted on the second driven shaft, a gear structure (320) is arranged on the rotating frame (32), and the gear structure is meshed with the second gear;
the telescopic mechanism comprises a first gear (51), an intermediate gear (52) and a common rack (53), the first gear is mounted on a first driven shaft, the intermediate gear is meshed with the first gear, the intermediate gear is mounted on a rotating shaft (54), the intermediate gear is meshed with the common rack, a rotating frame (32) is mounted on the rotating shaft, and the common rack is mounted on a connecting frame (40).
3. The trolley for underbody operation as claimed in claim 2, wherein: the rotating mechanism further comprises a base disc (11), the driving shaft (12) and the first driven shaft (131) are located at the head end of the base disc, and the second driven shaft (132) is located at the tail end of the base disc; the first driven shaft is pivoted on the base plate, the first driven shaft is hollow, the driving shaft is inserted into the first driven shaft, and the driving shaft can rotate relative to the first driven shaft;
the driving shaft is connected with the power transmission assembly, the power transmission assembly is connected with the rotating block (147), a pair of driving assemblies are arranged on the rotating block, and the power transmission assembly drives the pair of driving assemblies to do circular rotating motion with motion tracks; a first drive assembly (1401) of the pair of drive assemblies is positioned at the head end of the base disc, a second drive assembly (1402) of the pair of drive assemblies is positioned at the tail end of the base disc, and the first drive assembly is identical to the second drive assembly in structure;
either drive assembly includes a drive gear (140) and a drive gear locking assembly;
a first rotating disc (1511) is arranged on the first driven shaft, a first gear ring (1512) is arranged on the first rotating disc, and the first gear ring is meshed with a driving gear of the first driving assembly;
a second turntable (1521) is arranged on the second driven shaft, a second gear ring (1522) is arranged on the second turntable, and the second gear ring is meshed with a driving gear of the second driving assembly;
a cylindrical part (18) is arranged on the periphery of the base disc, the pair of driving components are positioned in the cylindrical part, and a first locking part (181) and a second locking part (182) are arranged on the inner side wall of the cylindrical part; the first locking piece enables the driving gear locking component to lock the driving gear of the first driving component by contacting with the driving gear locking component of the first driving component; the second locking piece enables the driving gear locking assembly to lock the driving gear of the second driving assembly by contacting with the driving gear locking assembly of the second driving assembly;
the motor provides power for the head end of the driving shaft, and is arranged on the bracket (31); the barrel is mounted on a support.
4. The cart for underbody operation as claimed in claim 3, wherein: the power transmission assembly comprises a driving gear (161), a transfer gear (162) and an internal gear (163); the internal gear is pivoted on the base plate (11), the driving gear is installed on the driving shaft (12), the rotating block (147) is installed on the outer side wall of the internal gear, and the driving gear drives the internal gear to rotate through the transfer gear.
5. The cart for underbody operation as claimed in claim 4, wherein: the base plate (11) comprises an upper plate part (112) and a lower plate part (113), and the upper plate part and the lower plate part are connected through a connecting piece; the internal gear (163) is pivoted on the upper disc part (112) and is positioned between the upper disc part and the lower disc part; the inner gear comprises a pivoting part and a gear part, the pivoting part is pivoted with the upper disc piece, and the gear part is meshed with the transfer gear (162); the driving gear (161) and the transfer gear (162) are arranged on the upper disc piece (112);
the driving shaft (12) penetrates through the upper disc part and extends into the base disc, the first driven shaft (131) is pivoted on the upper disc part (112), the second driven shaft (132) is pivoted on the lower disc part, the second driven shaft is hollow, a positioning rod (114) is arranged in a hollow cavity of the second driven shaft, the head end of the positioning rod is connected with the lower disc part, the tail end of the positioning rod is connected onto the support, and the second driven shaft can rotate relative to the positioning rod.
6. The trolley for underbody operation as claimed in claim 1, wherein: the number of the rollers (70) is four, and the rollers are connected to the four corners of the rear half supporting plate (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910831699.9A CN112440265A (en) | 2019-09-04 | 2019-09-04 | Trolley for vehicle bottom operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910831699.9A CN112440265A (en) | 2019-09-04 | 2019-09-04 | Trolley for vehicle bottom operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112440265A true CN112440265A (en) | 2021-03-05 |
Family
ID=74734534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910831699.9A Withdrawn CN112440265A (en) | 2019-09-04 | 2019-09-04 | Trolley for vehicle bottom operation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112440265A (en) |
-
2019
- 2019-09-04 CN CN201910831699.9A patent/CN112440265A/en not_active Withdrawn
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210305 |
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| WW01 | Invention patent application withdrawn after publication |