CN107697819B - Intelligent light vehicle-mounted cantilever crane - Google Patents
Intelligent light vehicle-mounted cantilever crane Download PDFInfo
- Publication number
- CN107697819B CN107697819B CN201711114700.3A CN201711114700A CN107697819B CN 107697819 B CN107697819 B CN 107697819B CN 201711114700 A CN201711114700 A CN 201711114700A CN 107697819 B CN107697819 B CN 107697819B
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- China
- Prior art keywords
- cross beam
- shaft
- sleeve
- fixed
- guide rail
- 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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- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 125000006850 spacer group Chemical group 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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
- B66C23/18—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
-
- 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
- B66C23/64—Jibs
- B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
- B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
- B66C23/706—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic telescoped by other means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
Abstract
The invention discloses an intelligent light vehicle-mounted cantilever crane, which comprises a stand column, a guide rail assembly, a screw rod, a cross beam and a loop chain electric hoist, wherein the screw rod, the cross beam and the loop chain electric hoist are arranged in the stand column; the lifting and the lowering of the cross beam are driven by the lifting motor, so that the lifting device is safe and reliable.
Description
Technical Field
The invention relates to the technical field of cargo lifting equipment, in particular to an intelligent light vehicle-mounted cantilever crane.
Background
The vehicle-mounted cantilever crane is mainly used for lifting heavy objects and is applied to places where cargoes are transferred from the ground to the carriage. The goods are transferred from the ground to the carriage in the modes of manual transportation, forklift transportation, crane lifting, slope transportation, vehicle lifting and the like, and the existing vehicle lifting device mostly adopts a steel wire rope, is easy to twist during lifting, and is unsafe; the upright posts are driven by hydraulic pressure, so that oil leakage is easy to occur when the upright posts are used for long-time bearing, and the reliability is poor; before lifting, the device needs to be manually adjusted, the intelligent degree is low, and the device is inconvenient to use.
Disclosure of Invention
The invention aims to provide an intelligent light vehicle-mounted cantilever crane so as to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides an intelligent light-duty on-vehicle cantilever crane, includes stand, guide rail assembly, sets up at the inside lead screw of stand, crossbeam and endless chain electric hoist, guide rail assembly upper end is rotated with the crossbeam through last fixed axle and is connected, the crossbeam end is fixed with endless chain electric hoist and control circuit subassembly, guide rail assembly lower extreme is connected with screw nut through lower fixed axle, screw nut and lead screw constitution screw pair, guide rail assembly both sides slidable mounting has the slider, the slider is fixed in the stand upper end through the slider lasso, the lead screw lower extreme is rotated and is installed on the lead screw base, and the lead screw base is fixed in on the motor connecting block, and the motor connecting block passes through the fixed mounting board of end support plate and stand bottom and is connected, and the elevator motor that output and lead screw are connected is installed to the terminal surface under the motor connecting plate, a plurality of mounting holes that are used for fixing the stand on the automobile body have been seted up on the mounting panel.
As a further scheme of the invention: the novel cross beam comprises a cross beam body, and is characterized in that a shaft hole is formed in the rear end of the cross beam, a sleeve is welded below the rear end of the cross beam in a manner of corresponding to the shaft hole, an inner hole of the sleeve is concentric with the shaft hole, an upper cross beam shaft sleeve is welded in the shaft hole, a counter bore is formed in the upper side of the upper cross beam shaft sleeve, a thrust bearing is arranged in the counter bore, a flat washer is arranged on the upper side of the thrust bearing, a lower cross beam shaft sleeve, the thrust bearing, a tapered roller bearing, a spacer sleeve and the tapered roller bearing are sequentially arranged below the upper cross beam shaft sleeve, the spacer sleeve, the tapered roller bearing, the thrust bearing, the lower cross beam shaft sleeve, the upper cross beam shaft sleeve and the inner hole of the flat washer are sequentially arranged on the lower cross beam, and the top shaft end of the upper fixed shaft is fixed through a flange surface nut.
As a further scheme of the invention: the cross beam is made of channel steel, a rear housing for housing the sleeve is fixed at the rear end of the cross beam, and a telescopic sleeve sleeved on the outer ring of the guide rail assembly is connected between the bottom of the rear housing and the top of the upright post.
As a further scheme of the invention: a first reinforcing rib plate and a second reinforcing rib plate are welded between the outer side of the sleeve and the bottom plane of the beam.
As a further scheme of the invention: the tail end of the cross beam is fixedly provided with a front housing for housing the control circuit assembly.
As a further scheme of the invention: the middle part of going up the fixed axle is provided with the cross bore, and the locating pin is worn to be equipped with respectively at the cross bore both ends, contradicts between two locating pins and is provided with and decide and draw the spring, the outside axle head of locating pin is conical setting, the sleeve lower extreme is fixed with the locating wheel, the locating wheel hole is provided with a plurality of little spline teeth, and the conical head of locating pin is connected with the little spline tooth meshing of locating wheel, cooperates the elasticity effect of deciding and draws the spring, realizes the rotatory self-positioning of crossbeam.
As a further scheme of the invention: the guide rail assembly comprises a hollow square tube, linear guide rails are fixed on two sides of the hollow square tube through screws, sinking grooves are formed in two sides of the upper fixing shaft and the lower fixing shaft, two threaded holes are formed in the bottom surface of the sinking grooves, two ends of the two linear guide rails are respectively arranged in the corresponding sinking grooves, and screws used for fixing the linear guide rails on the upper fixing shaft or the lower fixing shaft are arranged in the threaded holes of the sinking grooves in a penetrating mode.
Compared with the prior art, the invention has the beneficial effects that: the whole cargo transferring process is simple, convenient and labor-saving; the lifting and the lowering of the cross beam are driven by the lifting motor, so that the lifting and the lowering are safe and reliable, a hydraulic system is thoroughly abandoned, and the problem of poor oil leakage reliability is avoided; the electric chain hoist is used for lifting and descending cargoes, a short-loop hoisting chain of the electric chain hoist is used for replacing a steel wire rope, and the electric chain hoist is high in safety level, free of torsion and long in service life.
Drawings
FIG. 1 is a schematic diagram of the structure of an intelligent light vehicle-mounted cantilever crane of the present invention;
FIG. 2 is a schematic diagram of the structure of the upper fixed axle and the cross beam in the intelligent light vehicle-mounted cantilever crane;
FIG. 3 is a schematic view of a cross-sectional view of an intelligent light vehicle-mounted cantilever crane according to the present invention;
FIG. 4 is a schematic diagram of the structure of a rail assembly in an intelligent light vehicle-mounted cantilever crane of the present invention;
FIG. 5 is a schematic diagram of the structure of a linear guide rail and a hollow square tube in the intelligent light vehicle-mounted cantilever crane;
FIG. 6 is a schematic diagram of the structure of the intelligent light vehicle-mounted cantilever crane of the invention moving to the uppermost limit on the vehicle body;
FIG. 7 is a schematic diagram of the intelligent light vehicle-mounted cantilever crane of the present invention in its home position on a vehicle body.
In the figure: the device comprises a 1-beam, a 2-upper fixed shaft, a 3-guide rail assembly, a 31-hollow square tube, a 32-linear guide rail, 33-screws, a 4-slider, a 41-slider ferrule, a 5-lower fixed shaft, a 6-screw nut, a 7-upright post, an 8-screw, a 9-screw base, a 10-motor connecting block, a 11-lifting motor, a 12-bottom supporting plate, a 13-telescopic sleeve, a 14-rear housing, a 15-front housing, a 16-control circuit assembly, a 17-endless chain electric hoist, a 18-flange face nut, a 19-thrust bearing, a 20-tapered roller bearing, a 21-spacer, a 22-flat washer, a 23-beam upper sleeve, a 24-beam lower sleeve, a 25-positioning pin, a 26-fixed tension spring and a 27-positioning wheel.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention discloses an intelligent light vehicle-mounted cantilever crane, which is shown in figures 1,2,3,4, 5, 6 and 7, and comprises a stand column 7, a guide rail assembly 3, a screw rod 8, a cross beam 1 and a loop chain electric hoist 17, wherein the screw rod 8, the cross beam 1 and the loop chain electric hoist 17 are arranged in the stand column 7, the upper end of the guide rail assembly 3 is rotationally connected with the cross beam 1 through an upper fixed shaft 2, the tail end of the cross beam 1 is fixedly provided with the loop chain electric hoist 17 and a control circuit assembly 16, the lower end of the guide rail assembly 3 is connected with a screw rod nut 6 through a lower fixed shaft 5, the screw rod nut 6 and the screw rod 8 form a screw pair, sliding blocks 4 are slidably arranged on two sides of the guide rail assembly 3, the sliding blocks 4 are fixed on the upper end of the stand column 7 through sliding block ferrules 41, the lower end of the screw rod 8 is rotationally arranged on a screw rod base 9, the screw rod base 9 is fixed on a motor connecting block 10, the motor connecting block 10 is connected with a fixed mounting plate at the bottom of the stand column 7 through a bottom supporting plate 12, the lower end of the motor connecting plate 10 is provided with a lifting motor 11, the output end of which is connected with the screw rod 8, and a plurality of mounting holes for fixing the stand column 7 on a vehicle body.
The rear end of the cross beam 1 is provided with a shaft hole, a sleeve is welded below the rear end of the cross beam 1 corresponding to the shaft hole, an inner hole of the sleeve is concentric with the shaft hole, an upper cross beam shaft sleeve 23 is welded in the shaft hole, a counter bore is formed in the upper side of the upper cross beam shaft sleeve 23, a thrust bearing 19 is arranged in the counter bore, a flat washer 22 is arranged on the upper side of the thrust bearing 19, a lower cross beam shaft sleeve 24, the thrust bearing 19, a tapered roller bearing 20, a spacer 21 and the tapered roller bearing 20 are sequentially arranged below the upper cross beam shaft sleeve 23, and the upper fixed shaft 2 sequentially penetrates through the tapered roller bearing 20, the spacer 21, the tapered roller bearing 20, the thrust bearing 19, the lower cross beam shaft sleeve 24, the upper cross beam shaft sleeve 23 and the inner hole of the flat washer 22, and the top shaft end of the upper fixed shaft 2 is fixed through a flange face nut 18.
Preferably, the beam 1 is made of channel steel, a rear housing 14 for housing a sleeve is fixed at the rear end of the beam 1, and a telescopic sleeve 13 sleeved on the outer ring of the guide rail assembly 3 is connected between the bottom of the rear housing 14 and the top of the upright post 7; a first reinforcing rib plate and a second reinforcing rib plate are welded between the outer side of the sleeve and the bottom plane of the cross beam 1; the tail end of the cross beam 1 is fixedly provided with a front housing 15 for housing the control circuit assembly.
The middle part of the upper fixed shaft 2 is provided with a transverse hole, positioning pins 25 are respectively arranged at two ends of the transverse hole in a penetrating mode, fixed pull springs 26 are arranged between the two positioning pins 25 in an abutting mode, the outer shaft ends of the positioning pins 25 are arranged in a conical mode, positioning wheels 27 are fixed at the lower ends of the sleeves, a plurality of small spline teeth are arranged in inner holes of the positioning wheels 27, conical heads of the positioning pins 25 are meshed with the small spline teeth of the positioning wheels 27, and the small spline teeth are meshed with each other to achieve self-positioning of the rotation of the cross beam under the action of elastic force of the fixed pull springs 26.
Preferably, the guide rail assembly 3 includes a hollow square tube 31, two sides of the hollow square tube 31 are fixed with linear guide rails 32 through screws 33, two sides of the upper fixing shaft 2 and the lower fixing shaft 5 are provided with countersinks, two threaded holes are formed in the bottoms of the countersinks, two ends of the two linear guide rails 32 are respectively installed in the corresponding countersinks, and the screws 33 for fixing the linear guide rails 32 on the upper fixing shaft 2 or the lower fixing shaft 5 are penetrated in the threaded holes of the countersinks.
Referring to fig. 6-7, when the intelligent vehicle-mounted cantilever crane is used, the lifting motor 11 drives the screw rod 8 to rotate, the screw rod nut 6 moves upwards to push the guide rail assembly 3 to move upwards, the guide rail assembly 3 pushes the cross beam 1 to move upwards to the uppermost limit, then the lifting hook of the loop chain electric hoist 17 is controlled to descend to the height position to be hung, the lifting hook is pulled, the cross beam 1 freely rotates to the required position, the hanging belt on the goods is hung on the lifting hook, the lifting hook of the loop chain electric hoist 17 is controlled to ascend, the bottom end of the goods is higher than the position of the carriage baffle plate to push the goods, the cross beam 1 freely rotates to the required position in the carriage, then the lifting hook of the loop chain electric hoist 17 is controlled to descend, the goods is placed in the carriage, the process of transferring the goods from the ground into the carriage is realized, and after the goods are lifted, the vehicle-mounted cantilever crane can be restored. The whole cargo transferring process is simple, convenient and labor-saving; the lifting and descending of the cross beam 1 are driven by a lifting motor, so that the lifting and descending device is safe and reliable, a hydraulic system is thoroughly abandoned, and the problem of poor oil leakage reliability is avoided; the electric hoist 17 with a loop chain is used for lifting and descending cargoes, and a short loop hoisting chain of the electric hoist 17 with a loop chain is used for replacing a steel wire rope, so that the safety level is high, the torsion is avoided, and the service life is long.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (3)
1. The utility model provides an intelligent light-duty on-vehicle cantilever crane, includes stand, guide rail assembly, sets up at inside lead screw, crossbeam and the chain electric block of stand, its characterized in that: the upper end of the guide rail assembly is rotationally connected with the cross beam through an upper fixed shaft, the tail end of the cross beam is fixedly provided with a loop chain electric hoist and a control circuit assembly, the lower end of the guide rail assembly is connected with a screw nut through a lower fixed shaft, the screw nut and the screw form a screw pair, two sides of the guide rail assembly are slidably provided with sliding blocks, the sliding blocks are fixed at the upper end of the stand column through sliding block ferrules, the lower end of the screw is rotationally arranged on a screw base, the screw base is fixed on a motor connecting block, the motor connecting block is connected with a fixed mounting plate at the bottom of the stand column through a bottom supporting plate, the lower end face of the motor connecting plate is provided with a lifting motor, the output end of which is connected with the screw rod, and the mounting plate is provided with a plurality of mounting holes for fixing the stand column on the vehicle body;
The rear end of the cross beam is provided with a shaft hole, a sleeve is welded below the rear end of the cross beam and corresponds to the shaft hole, an inner hole of the sleeve is concentric with the shaft hole, an upper cross beam shaft sleeve is welded in the shaft hole, a counter bore is arranged on the upper side of the upper cross beam shaft sleeve, a thrust bearing is arranged in the counter bore, a flat washer is arranged on the upper side of the thrust bearing, a lower cross beam shaft sleeve, the thrust bearing, a tapered roller bearing, a spacer bush and the tapered roller bearing are sequentially arranged below the upper cross beam shaft sleeve, and the upper fixed shaft sequentially penetrates through the tapered roller bearing, the spacer bush, the tapered roller bearing, the thrust bearing, the lower cross beam shaft sleeve, the upper cross beam shaft sleeve and the inner hole of the flat washer;
the beam is made of channel steel, a rear housing for housing the sleeve is fixed at the rear end of the beam, and a telescopic sleeve sleeved on the outer ring of the guide rail assembly is connected between the bottom of the rear housing and the top of the upright post;
The middle part of the upper fixed shaft is provided with a transverse hole, two ends of the transverse hole are respectively provided with a positioning pin in a penetrating way, a fixed pulling spring is arranged between the two positioning pins in a propping way, the outer shaft ends of the positioning pins are arranged in a conical way, the lower end of the sleeve is fixedly provided with a positioning wheel, an inner hole of the positioning wheel is provided with a plurality of small spline teeth, a conical head of the positioning pin is in meshed connection with the small spline teeth of the positioning wheel, and the self-positioning of the rotation of the cross beam is realized by matching with the elastic action of the fixed pulling spring;
The guide rail assembly comprises a hollow square tube, linear guide rails are fixed on two sides of the hollow square tube through screws, sinking grooves are formed in two sides of the upper fixing shaft and the lower fixing shaft, two threaded holes are formed in the bottom surface of the sinking grooves, two ends of the two linear guide rails are respectively arranged in the corresponding sinking grooves, and screws used for fixing the linear guide rails on the upper fixing shaft or the lower fixing shaft are arranged in the threaded holes of the sinking grooves in a penetrating mode.
2. The intelligent lightweight vehicular cantilever crane according to claim 1, wherein: a first reinforcing rib plate and a second reinforcing rib plate are welded between the outer side of the sleeve and the bottom plane of the beam.
3. The intelligent lightweight vehicular cantilever crane according to claim 1, wherein: the tail end of the cross beam is fixedly provided with a front housing for housing the control circuit assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711114700.3A CN107697819B (en) | 2017-11-13 | 2017-11-13 | Intelligent light vehicle-mounted cantilever crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711114700.3A CN107697819B (en) | 2017-11-13 | 2017-11-13 | Intelligent light vehicle-mounted cantilever crane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107697819A CN107697819A (en) | 2018-02-16 |
| CN107697819B true CN107697819B (en) | 2024-05-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711114700.3A Active CN107697819B (en) | 2017-11-13 | 2017-11-13 | Intelligent light vehicle-mounted cantilever crane |
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| Country | Link |
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| CN (1) | CN107697819B (en) |
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|---|---|---|---|---|
| CN108773775A (en) * | 2018-06-24 | 2018-11-09 | 郭文英 | A kind of mechanical equipment upending frame |
| CN108557663A (en) * | 2018-07-06 | 2018-09-21 | 合肥格骄电子科技有限公司 | One kind being based on light mechanical and electrical integration absorbing and hoisting machine |
| CN110436356A (en) * | 2019-08-27 | 2019-11-12 | 济源市万洋绿色能源有限公司 | A kind of semi-automatic code punch-out equipment |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4511048A (en) * | 1982-06-04 | 1985-04-16 | Handling Systems, Inc. | Jib crane system having a rotatable mast |
| WO2004056692A1 (en) * | 2002-12-20 | 2004-07-08 | The Vitec Group Plc | Improvements in or relating to telescopic camera crane arms |
| DE102004043382A1 (en) * | 2003-07-02 | 2006-03-30 | Eckhard Klein | System for lifting and moving of loads has a vertical support frame with spindle drive to raise lifting grips and with lower support wheels and an upper securing grip |
| CN103708372A (en) * | 2013-12-16 | 2014-04-09 | 桂林电子科技大学 | Movable cantilever hoisting device |
| CN104401886A (en) * | 2014-11-25 | 2015-03-11 | 国家电网公司 | Assembling and disassembling lifting machine for substation equipment |
| CN105064309A (en) * | 2015-08-27 | 2015-11-18 | 枣庄福源环能机械制造有限公司 | Overwater cantilever lifting working platform |
| CN106966304A (en) * | 2017-03-17 | 2017-07-21 | 燕山大学 | A kind of electric lifting tool |
| CN207632372U (en) * | 2017-11-13 | 2018-07-20 | 宁波华表机械制造有限公司 | A kind of vehicle-mounted cantilever crane of intelligent light-duty |
-
2017
- 2017-11-13 CN CN201711114700.3A patent/CN107697819B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4511048A (en) * | 1982-06-04 | 1985-04-16 | Handling Systems, Inc. | Jib crane system having a rotatable mast |
| WO2004056692A1 (en) * | 2002-12-20 | 2004-07-08 | The Vitec Group Plc | Improvements in or relating to telescopic camera crane arms |
| DE102004043382A1 (en) * | 2003-07-02 | 2006-03-30 | Eckhard Klein | System for lifting and moving of loads has a vertical support frame with spindle drive to raise lifting grips and with lower support wheels and an upper securing grip |
| CN103708372A (en) * | 2013-12-16 | 2014-04-09 | 桂林电子科技大学 | Movable cantilever hoisting device |
| CN104401886A (en) * | 2014-11-25 | 2015-03-11 | 国家电网公司 | Assembling and disassembling lifting machine for substation equipment |
| CN105064309A (en) * | 2015-08-27 | 2015-11-18 | 枣庄福源环能机械制造有限公司 | Overwater cantilever lifting working platform |
| CN106966304A (en) * | 2017-03-17 | 2017-07-21 | 燕山大学 | A kind of electric lifting tool |
| CN207632372U (en) * | 2017-11-13 | 2018-07-20 | 宁波华表机械制造有限公司 | A kind of vehicle-mounted cantilever crane of intelligent light-duty |
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| Publication number | Publication date |
|---|---|
| CN107697819A (en) | 2018-02-16 |
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