CN111891943A - Stable mobile crane of bearing - Google Patents
Stable mobile crane of bearing Download PDFInfo
- Publication number
- CN111891943A CN111891943A CN202010773964.5A CN202010773964A CN111891943A CN 111891943 A CN111891943 A CN 111891943A CN 202010773964 A CN202010773964 A CN 202010773964A CN 111891943 A CN111891943 A CN 111891943A
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- CN
- China
- Prior art keywords
- plate
- bearing
- crane
- lifting
- column
- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
- B66C23/36—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/72—Counterweights or supports for balancing lifting couples
- B66C23/78—Supports, e.g. outriggers, for mobile cranes
- B66C23/80—Supports, e.g. outriggers, for mobile cranes hydraulically actuated
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
The invention relates to the technical field of cranes, in particular to an automobile crane with stable bearing, which comprises a crane rack storage rack, wherein a sealing plate is arranged on the surface of the crane rack storage rack, a connecting sleeve is arranged on the surface of the sealing plate, a cross rod is arranged on the inner wall of the crane rack storage rack and penetrates through a bearing column, a limiting plate is sleeved on the surface of the cross rod, a first steel ball is arranged on the surface of the limiting plate, a base plate is arranged at the end part of the bearing column, a damping pad is arranged on the surface of the base plate, and the base plate and the damping pad are penetrated through; the beneficial effects are that: according to the automobile crane with stable bearing, the reserved holes are formed in the surfaces of the base plate and the damping pad, the supporting rotating rod with the drill bit penetrates through the reserved holes, the supporting rotating rod is driven by the motor and pushed by the hydraulic cylinder, the supporting rotating rod is inserted into the ground, the supporting stability of the bearing column is improved, and the soil penetration depth of the supporting rotating rod is adjustable.
Description
Technical Field
The invention relates to the technical field of cranes, in particular to an automobile crane with stable bearing.
Background
The automobile crane is one kind of crane installed on common or special automobile chassis and has driving cab separated from the crane control cab. The crane has the advantages of good maneuverability and rapid transfer. The defects are that supporting legs are needed during working, the vehicle cannot run under load, and the vehicle is not suitable for working on soft or muddy places. The chassis performance of the automobile crane is equal to that of a lorry with the same total weight of the whole automobile, and the automobile crane meets the technical requirements of road vehicles, so that the automobile crane can pass through various roads without resistance. Such cranes are generally provided with two cabs for getting on and off the crane and the outriggers must be extended to maintain stability during operation.
In the prior art, the support legs of the automobile crane are vertically arranged, and when the automobile crane is idle, the driving of the automobile crane is influenced; and traditional landing leg can only be carried on subaerial, can't extend bearing structure to underground, so difficult support stability who promotes the landing leg.
Disclosure of Invention
The invention aims to provide an automobile crane with stable bearing, which aims to solve the problems in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: a truck crane with stable bearing comprises a crane frame storage rack, wherein a sealing plate is arranged on the surface of the crane frame storage rack, a connecting sleeve is arranged on the surface of the sealing plate, a cross rod is arranged on the inner wall of the crane frame storage rack and penetrates through a bearing column, a limiting plate is sleeved on the surface of the cross rod, a first steel ball is arranged on the surface of the limiting plate, a backing plate is arranged at the end part of the bearing column, a damping cushion is arranged on the surface of the backing plate, the backing plate and the damping cushion are penetrated through by a reserved hole, a mounting frame is arranged on the surface of the bearing column, a hydraulic cylinder is arranged inside the mounting frame, a pinch plate is arranged above the hydraulic cylinder, a pushing component is arranged between the pinch plate and a top plate of the mounting frame, an anti-deviation component is arranged between the pinch plate and a side plate of the, the connecting seat is fixed on the top surface of the top plate, a traction column is arranged on the bottom surface of the top plate, the other end of the traction column is connected to the surface of the lifting seat, a guide assembly is arranged between the lifting seat and the bearing column, an arm rod is arranged on the bottom surface of the lifting seat, a walking wheel is arranged at the end of the arm rod, a motor is arranged on the surface of the lifting seat, a shaft body of the motor is connected with a supporting rotating rod through a coupling in a transmission mode, a drill bit is arranged at the bottom end of the supporting rotating rod, and the drill bit is located in a.
Preferably, the hoist frame storage rack is square frame structure, and the shrouding is square platelike structure, and the shrouding is provided with two, and two shroudings are the pipe tubular structure about the opening symmetric distribution of hoist frame storage rack, and the adapter sleeve on two shrouding surfaces is the adapter sleeve staggered distribution, and the adapter sleeve is provided with a plurality ofly, and a plurality of adapter sleeve arrange along the long limit of shrouding and distribute.
Preferably, the horizontal pole is the circular cylinder structure, and the limiting plate is the structure of former ring annular plate form, and the limiting plate is provided with two, and two limiting plates are relative about bearing post symmetric distribution, and two first steel balls on limiting plate surface are relative, and first steel ball is provided with a plurality ofly, and a plurality of first steel balls are the distribution of circumference shape range.
Preferably, the top pushing component comprises a bearing seat, the bearing seat is fixed on the top surface of the pinch plate, a bearing is arranged in the bearing seat, the bearing sleeve is arranged at the bottom end of the adjusting screw rod, the adjusting screw rod penetrates through a top plate of the mounting frame, a matching sleeve is sleeved on the outer side of the adjusting screw rod and fixed on the top surface of the mounting frame, an inner ring surface of the matching sleeve is provided with an internal thread, the top end of the adjusting screw rod is provided with a handle, and the surface of the handle is provided with a ring.
Preferably, prevent that shift subassembly includes spacing slider, and spacing slider fixes on the surface of buckle, and the buckle is "L" shape structure, and spacing slider is square cylinder structure, and spacing slider is provided with two, and two spacing sliders are about buckle symmetric distribution, and spacing slider sliding connection is in spacing spout, spacing spout is seted up on the curb plate of mounting bracket.
Preferably, the guide assembly comprises a lifting block, the lifting block is fixed on the surface of the lifting seat, a lifting sleeve is inserted into the surface of the lifting block, a second steel ball is embedded into the inner ring surface of the lifting sleeve, sealing plates are arranged on the top surface of the lifting sleeve and the bottom surface of the lifting sleeve, the sealing plates are of annular plate-shaped structures, the lifting sleeve and the sealing plates are sleeved on the outer side of the guide column, the guide column is fixed in a side groove, and the side groove is formed in the surface of the supporting column.
Preferably, the arm lever is "L" shape structure, and the arm lever is provided with two, and two arm levers distribute in the both sides of limit groove.
Compared with the prior art, the invention has the beneficial effects that: the invention has reasonable structure and strong functionality, and has the following advantages:
1. the stably-bearing automobile crane is characterized in that a storage box is mounted at the bottom of a frame and used for storing idle bearings, the bearing bearings rotate to the inside of a storage frame around a cross rod when idle, then two groups of sealing plates are closed, and the bearing bearings are prevented from falling down by means of connecting sleeves which are arranged on the surfaces of the two groups of sealing plates in a staggered mode through bolts;
2. according to the automobile crane with stable bearing, the surfaces of the base plate and the damping pad are provided with the preformed holes, the supporting rotating rods with the drill bits penetrate through the preformed holes, the supporting rotating rods are driven by the motor and pushed by the hydraulic cylinder, so that the supporting rotating rods are inserted into the ground, the supporting stability of the bearing columns is improved, and the soil penetration depth of the supporting rotating rods is adjustable;
3. according to the automobile crane with the stable bearing, the pushing assembly is additionally arranged between the hydraulic cylinder and the mounting frame, after the hydraulic cylinder is placed into the mounting frame, the adjusting screw is screwed to drive the buckle plate to extrude the hydraulic cylinder, the hydraulic cylinder is prevented from shaking or falling off, the adjusting screw is loosened to drive the buckle plate to ascend, the hydraulic cylinder can be lifted up and drawn out of the mounting frame, and the hydraulic cylinder is convenient to assemble and disassemble during maintenance.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure of the mounting bracket of the present invention;
FIG. 3 is a schematic view of the lifting base of the present invention;
FIG. 4 is an enlarged view of the structure at A in FIG. 1;
fig. 5 is an enlarged schematic view of the structure at B in fig. 1.
In the figure: the crane frame storage rack comprises a crane frame storage rack 1, a sealing plate 2, a connecting sleeve 3, a cross rod 4, a supporting column 5, a limiting plate 6, a first steel ball 7, a base plate 8, a damping pad 9, a mounting rack 10, a hydraulic cylinder 11, a buckling plate 12, a bearing seat 13, a bearing 14, an adjusting screw 15, a matching sleeve 16, a handle 17, a finger ring 18, a limiting sliding block 19, a limiting sliding groove 20, a connecting seat 21, a top plate 22, a traction column 23, a lifting seat 24, a lifting block 25, a lifting sleeve 26, a second steel ball 27, a sealing plate 28, a guide column 29, a side groove 30, an arm rod 31, a walking wheel 32, a motor 33, a supporting rotating rod 34, a drill bit 35 and a reserved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 5, the present invention provides a technical solution: a truck crane with stable bearing comprises a crane rack storage rack 1, wherein the crane rack storage rack 1 is installed on the bottom surface of a truck crane rack, the surface of the crane rack storage rack 1 is hinged with two seal plates 2, the surface of each seal plate 2 is welded with a connecting sleeve 3, the crane rack storage rack 1 is of a square frame structure, each seal plate 2 is of a square plate-shaped structure, the two seal plates 2 are symmetrically distributed about the opening of the crane rack storage rack 1, each connecting sleeve 3 is of a round tube-shaped structure, the connecting sleeves 3 on the surfaces of the two seal plates 2 are distributed in a staggered manner, the connecting sleeves 3 are provided with a plurality of connecting sleeves 3, the connecting sleeves 3 are distributed along the long edge of each seal plate 2 in an arrayed manner, a cross rod 4 is welded on the inner wall of the crane rack storage rack 1, the cross rod 4 penetrates through a bearing column 5, a limiting plate 6 is sleeved, the cross rod 4 is of a circular cylinder structure, the limiting plates 6 are of an original circular ring plate-shaped structure, the two limiting plates 6 are arranged, the two limiting plates 6 are symmetrically distributed about the bearing column 5, the first steel balls 7 on the surfaces of the two limiting plates 6 are opposite, the first steel balls 7 are arranged in a plurality of numbers, the first steel balls 7 are distributed in a circumferential arrangement mode, the end portion of the bearing column 5 is welded with a backing plate 8, the damping pad 9 is bonded on the surface of the backing plate 8, and the backing plate 8 and the damping pad 9 are penetrated through by a reserved hole 36;
the surface of the bearing column 5 is welded with an installation frame 10, a hydraulic cylinder 11 is installed inside the installation frame 10, a pinch plate 12 is arranged above the hydraulic cylinder 11, a pushing component is arranged between the pinch plate 12 and a top plate of the installation frame 10, the pushing component comprises a bearing seat 13, the bearing seat 13 is fixed on the top surface of the pinch plate 12, a bearing 14 is arranged inside the bearing seat 13, the bearing 14 is sleeved at the bottom end of an adjusting screw 15, the adjusting screw 15 penetrates through the top plate of the installation frame 10, a matching sleeve 16 is sleeved outside the adjusting screw 15, the matching sleeve 16 is fixed on the top surface of the installation frame 10, an inner annular surface of the matching sleeve 16 is provided with an internal thread, the top end of the adjusting screw 15 is provided with a handle 17, the surface of the handle 17 is provided with a ring 18, an anti-deviation component is arranged between the pinch plate 12 and, the pinch plate 12 is of an L-shaped structure, the limiting slide blocks 19 are of a square column structure, two limiting slide blocks 19 are arranged, the two limiting slide blocks 19 are symmetrically distributed about the pinch plate 12, the limiting slide blocks 19 are connected in the limiting slide grooves 20 in a sliding mode, and the limiting slide grooves 20 are formed in side plates of the mounting frame 10;
a piston rod of the hydraulic cylinder 11 penetrates through a bottom plate of the mounting frame 10 and then is fixed in the connecting seat 21 through a screw, the connecting seat 21 is welded on the top surface of the top plate 22, a traction column 23 is welded on the bottom surface of the top plate 22, the other end of the traction column 23 is connected to the surface of the lifting seat 24, a guide assembly is arranged between the lifting seat 24 and the bearing column 5 and comprises a lifting block 25, the lifting block 25 is fixed on the surface of the lifting seat 24, a lifting sleeve 26 is inserted into the surface of the lifting block 25, a second steel ball 27 is embedded into the inner annular surface of the lifting sleeve 26, sealing plates 28 are arranged on the top surface of the lifting sleeve 26 and the bottom surface of the lifting sleeve 26, the sealing plates 28 are in annular plate-shaped structures, the lifting sleeve 26 and the sealing plates 28 are sleeved on the outer side of the guide column 29, the guide column;
the bottom surface welding of lift seat 24 has armed lever 31, and the tip welding of armed lever 31 has walking wheel 32, and armed lever 31 is "L" shape structure, and armed lever 31 is provided with two, and two armed levers 31 distribute in the both sides of limit groove 30, and lift seat 24's surface is having motor 33, and the axis body of motor 33 is connected with through the shaft coupling transmission and supports bull stick 34, supports the bottom fixedly connected with drill bit 35 of bull stick 34, and drill bit 35 is in preformed hole 36.
The working principle is as follows: in practical use, referring to fig. 1, at this time, the bearing column 5 is perpendicular to the ground, the seal plates 2 are in an open state, after the bearing column 5 rotates ninety degrees around the cross rod 4, the bearing column 5 is located in the storage rack 1 of the crane rack, the two seal plates 2 are closed, and the bolts are used for simultaneously penetrating through the connecting sleeves 3 on the surfaces of the two seal plates 2, so that the two seal plates 2 can seal the bearing column 5, and the bearing column 5 is prevented from falling from the storage rack 1 of the crane rack; when the bearing column 5 is vertical to the ground, the hydraulic cylinder 11 pushes the top plate 22 to descend, meanwhile, the starting motor 33 drives the supporting rotating rod 34 to rotate, in the process, the lifting seat 24 drives the lifting block 25 to slide along the guide column 29, the arm rod 31 pulls the travelling wheel 32 to slide along the bearing column 5, the supporting rotating rod 34 drives the drill 35 to drill downwards, and the supporting rotating rod 34 is inserted into the ground to improve the supporting stability of the bearing column 5; when the hydraulic cylinder 11 needs to be overhauled, the screw on the surface of the loosening connecting seat 21 is separated from the piston rod of the hydraulic cylinder 11, then the handle 17 is held by a hand to upwards screw the adjusting screw 15, the bottom end of the adjusting screw 15 drives the bearing 14 to rotate, the buckle plate 12 rises along with the adjusting screw 15, the limiting slide block 19 on the surface of the buckle plate 12 slides along the limiting slide groove 20 to avoid the buckle plate 12 to swing, and after the buckle plate 12 rises, the hydraulic cylinder 11 can be taken out from the mounting frame 10.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a stable mobile crane of bearing, includes crane rack storage rack (1), its characterized in that: the surface of the crane rack storage rack (1) is provided with a sealing plate (2), the surface of the sealing plate (2) is provided with a connecting sleeve (3), the inner wall of the crane rack storage rack (1) is provided with a cross rod (4), the cross rod (4) penetrates through a bearing column (5), the surface of the cross rod (4) is sleeved with a limiting plate (6), the surface of the limiting plate (6) is provided with a first steel ball (7), the end part of the bearing column (5) is provided with a backing plate (8), the surface of the backing plate (8) is provided with a damping pad (9), the backing plate (8) and the damping pad (9) are penetrated through a preformed hole (36), the surface of the bearing column (5) is provided with a mounting rack (10), a hydraulic cylinder (11) is arranged inside the mounting rack (10), a buckling plate (12) is arranged above the hydraulic cylinder (11), and a pushing assembly is arranged between the buckling plate (12), an anti-deviation assembly is arranged between the pinch plate (12) and a side plate of the hydraulic cylinder (11), a piston rod of the hydraulic cylinder (11) penetrates through a bottom plate of the mounting frame (10) and then is fixed in the connecting seat (21) through a screw, the connecting seat (21) is fixed on the top surface of the top plate (22), a traction column (23) is arranged on the bottom surface of the top plate (22), the other end of the traction column (23) is connected to the surface of the lifting seat (24), a guide assembly is arranged between the lifting seat (24) and the bearing column (5), an arm rod (31) is arranged on the bottom surface of the lifting seat (24), a walking wheel (32) is arranged at the end of the arm rod (31), a motor (33) is arranged on the surface of the lifting seat (24), a shaft body of the motor (33) is connected with a supporting rotating rod (34) through a transmission coupling, and a drill bit (35, the drill bit (35) is located in the preformed hole (36).
2. The truck crane with stable bearing capacity as claimed in claim 1, wherein: crane frame storage rack (1) is square frame structure, and shrouding (2) are square platelike structure, and shrouding (2) are provided with two, and two shrouding (2) are about the opening symmetric distribution of crane frame storage rack (1), and connecting tube (3) are the pipe shape structure, and connecting tube (3) the dislocation of two shrouding (2) surfaces distributes, and connecting tube (3) are provided with a plurality ofly, and a plurality of connecting tube (3) are arranged along the long limit of shrouding (2) and are distributed.
3. The truck crane with stable bearing capacity as claimed in claim 1, wherein: the cross rod (4) is a circular cylinder structure, the limiting plates (6) are in an original circular ring plate-shaped structure, the two limiting plates (6) are arranged, the two limiting plates (6) are symmetrically distributed about the bearing columns (5), the first steel balls (7) on the surfaces of the two limiting plates (6) are opposite, the first steel balls (7) are arranged in a plurality of forms, and the first steel balls (7) are distributed in a circumferential arrangement mode.
4. The truck crane with stable bearing capacity as claimed in claim 1, wherein: the top pushes away the subassembly and includes bearing frame (13), and the top surface at buckle (12) is fixed in bearing frame (13), and the inside of bearing frame (13) is provided with bearing (14), the bottom at adjusting screw (15) is established in bearing (14) cover, and adjusting screw (15) run through the roof of mounting bracket (10), and the outside cover of adjusting screw (15) is equipped with cooperation sleeve pipe (16), the top surface at mounting bracket (10) is fixed in cooperation sleeve pipe (16), and the interior anchor ring of cooperation sleeve pipe (16) is provided with the internal thread, and the top of adjusting screw (15) is provided with handle (17), the surface of handle (17) is provided with ring (18).
5. The truck crane with stable bearing capacity as claimed in claim 1, wherein: prevent excursion subassembly includes limit slide (19), and limit slide (19) are fixed on the surface of buckle (12), and buckle (12) are "L" shape structure, and limit slide (19) are square cylinder structure, and limit slide (19) are provided with two, and two limit slide (19) are about buckle (12) symmetric distribution, and limit slide (19) sliding connection in limit chute (20), limit chute (20) are seted up on the curb plate of mounting bracket (10).
6. The truck crane with stable bearing capacity as claimed in claim 1, wherein: the guide assembly comprises a lifting block (25), the lifting block (25) is fixed on the surface of a lifting seat (24), a lifting sleeve (26) is inserted into the surface of the lifting block (25), a second steel ball (27) is installed in the inner ring surface of the lifting sleeve (26), the top surface of the lifting sleeve (26) and the bottom surface of the lifting sleeve (26) are both provided with a sealing plate (28), the sealing plate (28) is of an annular plate-shaped structure, the outer side of a guide column (29) is sleeved with the lifting sleeve (26) and the sealing plate (28), the guide column (29) is fixed in a side groove (30), and the side groove (30) is arranged on the surface of the bearing column (5).
7. The truck crane with stable bearing capacity as claimed in claim 1, wherein: the arm rods (31) are L-shaped structures, two arm rods (31) are arranged, and the two arm rods (31) are distributed on two sides of the side groove (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010773964.5A CN111891943A (en) | 2020-08-04 | 2020-08-04 | Stable mobile crane of bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010773964.5A CN111891943A (en) | 2020-08-04 | 2020-08-04 | Stable mobile crane of bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111891943A true CN111891943A (en) | 2020-11-06 |
Family
ID=73245431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010773964.5A Withdrawn CN111891943A (en) | 2020-08-04 | 2020-08-04 | Stable mobile crane of bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111891943A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112874642A (en) * | 2021-03-02 | 2021-06-01 | 临沂大学 | Quick-opening type fixing device for automobile spare tire |
| CN113003404A (en) * | 2021-03-09 | 2021-06-22 | 机械工业第九设计研究院有限公司 | Intelligent lifting appliance for forklift charging room |
-
2020
- 2020-08-04 CN CN202010773964.5A patent/CN111891943A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112874642A (en) * | 2021-03-02 | 2021-06-01 | 临沂大学 | Quick-opening type fixing device for automobile spare tire |
| CN112874642B (en) * | 2021-03-02 | 2022-02-01 | 临沂大学 | Quick-opening type fixing device for automobile spare tire |
| CN113003404A (en) * | 2021-03-09 | 2021-06-22 | 机械工业第九设计研究院有限公司 | Intelligent lifting appliance for forklift charging room |
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| PB01 | Publication | ||
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20201106 |
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| WW01 | Invention patent application withdrawn after publication |