CN207043730U - The assembling of special-purpose vehicle back end beam and conveying device - Google Patents
The assembling of special-purpose vehicle back end beam and conveying device Download PDFInfo
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- CN207043730U CN207043730U CN201721049170.4U CN201721049170U CN207043730U CN 207043730 U CN207043730 U CN 207043730U CN 201721049170 U CN201721049170 U CN 201721049170U CN 207043730 U CN207043730 U CN 207043730U
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Abstract
The utility model discloses assembling and the conveying device of a kind of special-purpose vehicle back end beam, including：Pre-assembled of channel-section steel, for assembling the channel-section steel and reinforcing plate of back end beam, channel-section steel component is formed after the channel-section steel and reinforcing plate assembling and welding；Back end beam assembly or fitting table, for assembling cover plate and channel-section steel component, the back end beam assembly or fitting table includes assembly platform, assembly or fitting table base and the first lift cylinder extended in transverse direction, the assembly platform is movably arranged on assembly or fitting table base, and first lift cylinder can drive the assembly platform to move up and down；Automatic transport table, the back end beam being completed for automatic transport, when having assembled back end beam, first lift cylinder shrinks, the assembly platform is reduced, and the back end beam is automatically fallen in the automatic transport table, and the automatic transport table is conveyed the back end beam to next station.The assembling of special-purpose vehicle back end beam of the present utility model and conveying device can improve the production efficiency of back end beam manufacture.
Description
Technical field
It the utility model is related to special-purpose vehicle manufacturing field, the assembling of more particularly to a kind of special-purpose vehicle back end beam and conveying dress
Put.
Background technology
Special-purpose vehicle includes dumper, trailer etc., and it is used to undertake special transport task or special operation.For example, semitrailer
Transport for container.In traditional special-purpose vehicle manufacturing, the manufacture of the back end beam of semitrailer is first to be entered with simple frock
The assembling of row all parts, after being completed, reuse loop wheel machine the back end beam being completed hung in into next position and welded,
Low production efficiency.
Utility model content
In order to solve the problems, such as that the assembling of back end beam present in conventional art and conveying have low production efficiency, this practicality
A kind of new assembling for providing special-purpose vehicle back end beam and conveying device.
The utility model provides assembling and the conveying device of a kind of special-purpose vehicle back end beam, including：
Pre-assembled of channel-section steel, for assembling the channel-section steel and reinforcing plate of back end beam, the channel-section steel and reinforcing plate assembling and
Channel-section steel component is formed after welding；
Back end beam assembly or fitting table, for assembling cover plate and channel-section steel component, the back end beam assembly or fitting table includes prolonging in transverse direction
Assembly platform, assembly or fitting table base and the first lift cylinder stretched, the assembly platform is movably arranged on assembly or fitting table base, described
First lift cylinder can drive the assembly platform to move up and down；
Automatic transport table, the back end beam being completed for automatic transport, when having assembled back end beam, first lifting air
Cylinder is shunk, and the assembly platform reduces, and the back end beam is automatically fallen in the automatic transport table, and the automatic transport table is by institute
Back end beam is stated to be conveyed to next station.
Optionally, the assembling of the special-purpose vehicle back end beam and conveying device also include positioned at the back end beam assembly or fitting table just on
The back end beam hold-down mechanism of side, the crossbeam for installing the back end beam hold-down mechanism and two for supporting the crossbeam
Post, before the cover plate and the channel-section steel component carry out spot welding, the back end beam hold-down mechanism is used to compress back end beam.
Optionally, the assembly platform includes chassis and multiple spaced supporting tables being arranged on the chassis, phase
A fracture is formed between adjacent two supporting tables, multiple supporting tables at least form two fractures；
The automatic transport table includes two guide rails extendable in the longitudinal direction and is arranged on the upper and lower surface of the guide rail
Chain, when the assembly platform drops to predetermined altitude, one end of the guide rail stretches to the corresponding of the assembly platform
In fracture, two guide rail is set to be docked with the back end beam assembly or fitting table.
Optionally, the assembling of the special-purpose vehicle back end beam also includes automatic transport roller-way, and the automatic transport roller-way is used for
The back end beam conveyed by the automatic transport table is delivered to next station；
The automatic transport table also includes being used to support two columns of two guide rail and for driving above and below the guide rail
The second mobile lift cylinder, the other end of the guide rail extend to the automatic transport roller-way；
After automatic transport table conveying back end beam to the preset distance, second lift cylinder, which stretches out, lifts the guide rail
Height, when the back end beam is delivered to the automatic transport roller-way top, second lift cylinder, which shrinks, drops the guide rail
Low, the back end beam is automatically fallen on the automatic transport roller-way, and next station is delivered to by the automatic transport roller-way.
Optionally, the pre-position of the automatic transport table is provided with guide rail and raises limit switch, the automatic transport
Platform has guide rail to reduce limit switch close to the end set of the automatic transport roller-way, and end carriage is transported to the guide rail in the rear
When raising limit switch position, the guide rail raises limit switch action, and second lift cylinder stretches out, and raises described
Guide rail；When end carriage is transported to above automatic transport roller-way in the rear, the guide rail reduces limit switch and acted, described second liter
Sending down abnormally ascending cylinder shrinks, and reduces the guide rail.
Optionally, first lift cylinder and second lift cylinder are fixed on the ground by hinges, institute
Column is stated to fix on the ground.
Optionally, limit switch in place is provided with the automatic transport table, when back end beam falls from the assembly platform
When in the automatic transport table, the limit switch in place acts, and drives the motor movement of the automatic transport table, the motor
Drive the chain movement.
Optionally, pre-assembled of the channel-section steel includes the support of two support beams of two support beams being parallel to each other and support,
One end of two support beam extends to the back end beam assembly or fitting table.
Optionally, sidepiece locating piece and end locating piece are additionally provided with the assembly platform, the sidepiece locating piece is in
Inverted L shape, the sidepiece locating piece is from sidepiece locating slot steel component and the cover plate, described in the end locating piece positions from end
Channel-section steel component.
Optionally, the assembly platform is flexibly connected by two hinges with the assembly or fitting table base, described first liter
Sending down abnormally ascending cylinder is obliquely installed so that the assembly platform can tilt shifting along the vertical direction under the driving of first lift cylinder
It is dynamic.
The technical scheme that embodiment of the present utility model provides can include the following benefits：
The assembling of special-purpose vehicle back end beam of the present utility model and conveying device include pre-assembled of channel-section steel, back end beam assembly or fitting table
And automatic transport table, the back end beam assembly or fitting table include assembly platform, assembly or fitting table base and first liter extended in transverse direction
Sending down abnormally ascending cylinder, pre-assembled assembly welding for being used for channel-section steel component of channel-section steel, back end beam assembly or fitting table are used for the group of cover plate and channel-section steel component
Dress, and before cover plate and channel-section steel assembling components and after assembling, assembly platform is moved by the first lift cylinder so that assembling
Back end beam on platform after assembly is completed, can be automatically fallen in automatic transport table, by automatic transport table by back end beam from
The next station of trend is conveyed.The utility model is by setting pre-assembled of channel-section steel and back end beam assembly or fitting table to realize back end beam
Assembling positioning, and by can automatic lifting assembly platform and automatic transport table realize assembling after back end beam it is automatic defeated
Send, improve production efficiency.
It should be appreciated that the general description and following detailed description of the above are only exemplary, this can not be limited
Utility model.
Brief description of the drawings
Accompanying drawing herein is merged in specification and forms the part of this specification, show meet it is of the present utility model
Embodiment, and in specification together for explaining principle of the present utility model.
Fig. 1 is the back end beam structural representation of the vehicle frame of semitrailer.
Fig. 2 is assembling and the structural representation of conveying device of the utility model special-purpose vehicle back end beam.
Fig. 3 be the utility model special-purpose vehicle back end beam assembling and conveying device another angle direction structural representation
Figure.
Fig. 4 is the partial enlarged drawing in Tu2Zhong A areas.
Fig. 5 is the structural representation of automatic transport table.
Embodiment
In order to further illustrate principle and structure of the present utility model, it is preferable to carry out in conjunction with accompanying drawing to of the present utility model
Example is described in detail.
The utility model mainly by taking the assembling and conveying of the back end beam of semi-trailer frame as an example, illustrates of the present utility model special
Assembling and conveying device with car back end beam.Assembling of the present utility model and conveying device remove application to the back end beam of semitrailer
On, also apply on the back end beam of other special-purpose vehicles.
In general, as shown in figure 1, its back end beam structural representation for the vehicle frame of semitrailer.Back end beam 200 includes channel-section steel
Component 201 and cover plate 202, channel-section steel component 201 are made up of channel-section steel 201a and multiple reinforcing plate 201b.Multiple reinforcing plate 201b welding
It is arranged at intervals inside channel-section steel 201a and along channel-section steel 201a length directions.
As shown in Figures 2 and 3, Fig. 2 is the assembling of the utility model special-purpose vehicle back end beam and the structural representation of conveying device
Figure, Fig. 3 be the utility model special-purpose vehicle back end beam assembling and conveying device another angle direction structural representation.The group
Dress and conveying device 100 include pre-assembled 10, channel-section steel, back end beam assembly or fitting table 20, automatic transport table 30 and automatic transport roller-way
40。
It should be noted that the signified short transverse of the utility model is Z-direction, horizontal direction is X-direction, longitudinal direction side
To（Fore-and-aft direction）For Y direction.
Channel-section steel includes two support beams of two support beams 11 for being parallel to each other extendable in the longitudinal direction and support for pre-assembled 10
11 support 12, one end of two support beams 11 extend to back end beam assembly or fitting table 20.It is first that channel-section steel 201a is laterally disposed in assembling
In support beam 11, in the groove that then reinforcing plate 201b is assembled and is soldered to channel-section steel 201a, channel-section steel component is finally assembled into
201。
Back end beam assembly or fitting table 20 includes assembly platform 21, the lifting air of assembly or fitting table base 22 and first extended in transverse direction
Cylinder 23.Assembly or fitting table base 22 is fixed on floor, and assembly platform 21 passes through hinges 24, hinges 25 and assembly or fitting table base
22 are flexibly connected.First lift cylinder 23 is inclined at the lower section of assembly platform 21.When first lift cylinder 23 acts, stretching
Or activity compression hinge 24, hinges 25, assembly platform 21 is had a down dip along in the short transverse of assembling and conveying device 100
It is tiltedly mobile.Assembly platform 21 includes chassis 211 and multiple spaced supporting tables 212 being arranged on chassis 211, adjacent two
A fracture is formed between support platform 212, and multiple supporting tables 212 at least form two fractures.In fig. 2, assembly platform 21 includes
Three supporting tables 212, the fracture of formation is two.The purpose of the formation of the fracture is, is easy to automatic transport table 30 to be docked to
Assembly platform 21.
As shown in figure 4, it is the partial enlarged drawing in Tu2Zhong A areas, the top surface of assembly platform 21 is additionally provided with sidepiece locating piece
2121, the sidepiece locating piece 2121 includes vertical portion 2121a and transverse part 2121b, vertical portion 2121a and transverse part 2121b shapes
Into inverted L shape.Vertical portion 2121a is used to contact and positioning cover plate 202, and transverse part 2121b is used to contact and locating slot steel component
201, enable channel-section steel component 201 and the accurate contraposition of cover plate 202, be easy to spot welding.Assembly platform 21 completes the group of channel-section steel component 201
After dress, assembly platform 21 is driven to move obliquely by the first lift cylinder 23 so that channel-section steel component 201 can freely fall certainly
In dynamic transport platform 30, and when automatic transport table 30 conveys channel-section steel component 201, sidepiece locating piece 2121 will not block channel-section steel component
201。
As shown in figure 3, the both ends of the top surface of assembly platform 21 are additionally provided with end locating piece 2122, for locating slot steel group
The end of part 201, channel-section steel component 201 and cover plate 202 is set precisely to align.
Assembling of the present utility model and conveying device 100 also include the back end beam pressure directly over back end beam assembly or fitting table 20
Tight mechanism 51, the crossbeam 52 for installing back end beam hold-down mechanism 51 and two pillars 53 for support beam 52.Hold-down mechanism
51 be two, for when cover plate 202 and channel-section steel component 201 carry out spot welding, compressing back end beam 200.Hold-down mechanism 51 includes gas
Cylinder 511 and briquetting 512, under the driving of cylinder 511, briquetting 512 can move up and down.
When assembling channel-section steel component 201 and cover plate 202, the first lift cylinder 23 is in stretching state, and assembly platform 21 is upward
Banking motion, the upper surface of assembly platform 21 is set to be higher than automatic transport table 30；Then cover plate 202 is placed on assembly platform 21
On；Then, the channel-section steel component 201 that channel-section steel is completed for pre-assembled 10 is placed on cover plate 202, and according to sidepiece locating piece
2121 and end locating piece 2122 ajust the position of channel-section steel component 201 and cover plate 202, enable channel-section steel component 201 and cover plate 202
Accurate contraposition；After the positioning for completing channel-section steel component 201 and cover plate 202, the briquetting 512 of back end beam hold-down mechanism 51 is in cylinder 511
Driving under, push, compress channel-section steel component 201；The spot welding of channel-section steel component 201 and cover plate 202 is finally carried out, completes back end beam
200 assembling.After being completed, the first lift cylinder 23 is shunk, and assembly platform 21 tilts down motion, and self-locking transport platform 30 is stretched
Enter to the fracture of assembly platform 21, back end beam 200 is in free state and automatically fallen in automatic transport table 30.
Next, back end beam 200 is carried out the conveying of back end beam 200 by automatic transport table 30.As shown in Figures 2 and 3, automatically
Transport platform 30 includes motor（It is not shown）, two guide rails extendable in the longitudinal direction 31, the chain for being arranged on 31 upper and lower surface of guide rail
Bar 32, two columns 33 and two the second lift cylinders 34 for supporting two guide rails 31.Two columns 33 are oppositely arranged and are fixed on
On floor.Second lift cylinder 34 is fixed on floor by hinges.Two the second lift cylinders 34 respectively with two guide rails
31 connections, and two the second lift cylinders 34 coordinate with two columns 33, common supporting guide 31.Guide rail 31 is in the second lift cylinder
It can be moved up and down under 34 driving.
One end of two guide rails 31 can be respectively protruding into the corresponding fracture of assembly platform 21, be achieved in guide rail 31 and assembling
The docking of platform 21.The other end of two guide rails 31 extends to automatic transport roller-way 40.
With reference to shown in Fig. 5, Fig. 5 is the structural representation of automatic transport table, and guide rail 31 is set close to the position of assembly platform 21
Limit switch 35 in place are equipped with, when back end beam 200 falls when in automatic transport table 30 from assembly platform 21, limit switch 35 in place
Sense back end beam 200 and act, drive the motor movement of automatic transport table 30, motor driven chain 32 is moved, just started defeated
Send back end beam 200.
Guide rail 31 is provided with close to the opening position of interlude and raises limit switch 36, is delivered in back end beam 200 and raises limit
When at the position of bit switch 36, to raise limit switch 36 and act, the first lift cylinder 23 stretches out, and raises assembly platform 21, and
The upper surface of assembly platform 21 is set to be higher than the upper surface of automatic transport table 30.
Motor continues to drive chain 32 to operate.Pre-position of the guide rail 31 away from interlude be provided with guide rail raise it is spacing
Switch 37, when back end beam 200 moves to the opening position that this raises limit switch 37, guide rail is raised limit switch 37 and acted, the
Two lift cylinders 34 are stretched out, and two guide rails 31 are raised.The end set that guide rail 31 contacts automatic transport roller-way 40 has guide rail to reduce limit
Bit switch 38, when back end beam 200 is transported to above automatic transport roller-way 40, guide rail is raised limit switch 38 and acted, second liter
Sending down abnormally ascending cylinder 34 shrinks, and two guide rails 31 decline.Back end beam 200 is in free state and automatically fallen on automatic transport roller-way 40.
Detection switch is provided with automatic transport roller-way 40, when detecting that back end beam 200 falls on automatic transport roller-way 40
When, start the motor of automatic transport roller-way 40, back end beam 200 is delivered to next station.
In addition, change above-mentioned sidepiece locating piece 2121 and end locating piece 2122, can make assembling of the present utility model and
Conveying device is applicable the assembling and conveying of the back end beam of different special-purpose vehicle vehicles.
The assembling of special-purpose vehicle back end beam of the present utility model and conveying device include pre-assembled of channel-section steel, back end beam assembly or fitting table
And automatic transport table, the back end beam assembly or fitting table include assembly platform, assembly or fitting table base and first liter extended in transverse direction
Sending down abnormally ascending cylinder, pre-assembled assembly welding for being used for channel-section steel component of channel-section steel, back end beam assembly or fitting table are used for the group of cover plate and channel-section steel component
Dress, and before cover plate and channel-section steel assembling components and after assembling, assembly platform is moved by the first lift cylinder so that assembling
Back end beam on platform after assembly is completed, can be automatically fallen in automatic transport table, by automatic transport table by back end beam from
The next station of trend is conveyed.The utility model is by setting pre-assembled of channel-section steel and back end beam assembly or fitting table to realize back end beam
Assembling positioning, and by can automatic lifting assembly platform and automatic transport table realize assembling after back end beam it is automatic defeated
Send, improve production efficiency.
Assembly platform of the present utility model is by forming fracture so that the guide rail of automatic transport table can extend into flat to assembling
In the fracture of platform, assembly platform and the slitless connection of automatic transport table are realized.
Automatic transport table of the present utility model by the second lift cylinder is set, raise limit switch and guide rail raise it is spacing
Switch, can automatically lifting and reduce guide rail so that automatic transport table transport back end beam can automatically fall in automatic transport
On roller-way, next station is delivered to by automatic transport roller-way, thereby, the full-automatic conveying of the back end beam assembled is realized, improves
Production efficiency.
Preferable possible embodiments of the present utility model are these are only, not limit the scope of protection of the utility model, all fortune
Changed with the equivalent structure made by the utility model specification and accompanying drawing content, be all contained in the scope of protection of the utility model
It is interior.
Claims (10)
1. assembling and the conveying device of a kind of special-purpose vehicle back end beam, it is characterised in that including：
Pre-assembled of channel-section steel, for assembling the channel-section steel and reinforcing plate of back end beam, the channel-section steel and reinforcing plate assembling and welding
Channel-section steel component is formed afterwards；
Back end beam assembly or fitting table, for assembling cover plate and channel-section steel component, the back end beam assembly or fitting table includes what is extended in transverse direction
Assembly platform, assembly or fitting table base and the first lift cylinder, the assembly platform are movably arranged on assembly or fitting table base, and described first
Lift cylinder can drive the assembly platform to move up and down；
Automatic transport table, the back end beam being completed for automatic transport, when having assembled back end beam, first lift cylinder is received
Contracting, the assembly platform are reduced, and the back end beam is automatically fallen in the automatic transport table, after the automatic transport table will be described
End carriage is conveyed to next station.
2. assembling and the conveying device of special-purpose vehicle back end beam according to claim 1, it is characterised in that after the special-purpose vehicle
The assembling of end carriage and conveying device are also including the back end beam hold-down mechanism directly over the back end beam assembly or fitting table, for installing
The crossbeam of the back end beam hold-down mechanism and two pillars for supporting the crossbeam, enter in the cover plate and the channel-section steel component
Before row spot welding, the back end beam hold-down mechanism is used to compress back end beam.
3. assembling and the conveying device of special-purpose vehicle back end beam according to claim 1, it is characterised in that the assembly platform
Including chassis and multiple spaced supporting tables being arranged on the chassis, a fracture is formed between adjacent two supporting table, it is more
Individual supporting table at least forms two fractures；
The automatic transport table includes two guide rails extendable in the longitudinal direction and is arranged on the chain on the upper and lower surface of the guide rail
Bar, when the assembly platform drops to predetermined altitude, one end of the guide rail stretches to the corresponding disconnected of the assembly platform
It is intraoral, two guide rail is docked with the back end beam assembly or fitting table.
4. assembling and the conveying device of special-purpose vehicle back end beam according to claim 3, it is characterised in that after the special-purpose vehicle
The assembling of end carriage also includes automatic transport roller-way, and the automatic transport roller-way is used for the rear end that will be conveyed by the automatic transport table
Beam is delivered to next station；
The automatic transport table also includes being used to support two columns of two guide rail and for driving the guide rail to move up and down
The second lift cylinder, the other end of the guide rail extends to the automatic transport roller-way；
After automatic transport table conveying back end beam to the preset distance, second lift cylinder, which stretches out, raises the guide rail,
When the back end beam is delivered to the automatic transport roller-way top, second lift cylinder, which shrinks, reduces the guide rail,
The back end beam is automatically fallen on the automatic transport roller-way, and next station is delivered to by the automatic transport roller-way.
5. assembling and the conveying device of special-purpose vehicle back end beam according to claim 4, it is characterised in that the automatic transport
The pre-position of platform is provided with guide rail and raises limit switch, and the automatic transport table is close to the end of the automatic transport roller-way
Be provided with guide rail reduce limit switch, in the rear end carriage transport to the guide rail raise limit switch position when, it is described
Guide rail raises limit switch action, and second lift cylinder stretches out, and raises the guide rail；End carriage is transported to automatic in the rear
When above rollgang, the guide rail reduces limit switch action, and second lift cylinder shrinks, and reduces the guide rail.
6. assembling and the conveying device of special-purpose vehicle back end beam according to claim 4, it is characterised in that first lifting
Cylinder and second lift cylinder are fixed on the ground by hinges, and the column fixes on the ground.
7. assembling and the conveying device of special-purpose vehicle back end beam according to claim 3, it is characterised in that the automatic transport
Limit switch in place is provided with platform, when back end beam falls when in the automatic transport table from the assembly platform, it is described in place
Limit switch acts, and drives the motor movement of the automatic transport table, chain movement described in the motor driven.
8. assembling and the conveying device of special-purpose vehicle back end beam according to claim 1, it is characterised in that pre- group of the channel-section steel
Filling platform includes the support of two support beams of two support beams being parallel to each other and support, and one end of two support beam extends to described
Back end beam assembly or fitting table.
9. assembling and the conveying device of special-purpose vehicle back end beam according to claim 1, it is characterised in that the assembly platform
On be additionally provided with sidepiece locating piece and end locating piece, the sidepiece locating piece is in inverted L shape, and the sidepiece locating piece is determined from sidepiece
Position channel-section steel component and the cover plate, the end locating piece position the channel-section steel component from end.
10. assembling and the conveying device of special-purpose vehicle back end beam according to claim 1, it is characterised in that the assembling is flat
Platform is flexibly connected by two hinges with the assembly or fitting table base, and first lift cylinder is obliquely installed so that described group
Assembling platform being capable of inclination movement along the vertical direction under the driving of first lift cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721049170.4U CN207043730U (en) | 2017-08-18 | 2017-08-18 | The assembling of special-purpose vehicle back end beam and conveying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721049170.4U CN207043730U (en) | 2017-08-18 | 2017-08-18 | The assembling of special-purpose vehicle back end beam and conveying device |
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| Publication Number | Publication Date |
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| CN207043730U true CN207043730U (en) | 2018-02-27 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108971850A (en) * | 2018-08-07 | 2018-12-11 | 江苏艾威机械制造有限公司 | A kind of Frame Welding clamping device |
| CN109396825A (en) * | 2017-08-18 | 2019-03-01 | 东莞中集专用车有限公司 | The assembling and conveying device of special-purpose vehicle back end beam |
| CN109967547A (en) * | 2019-04-22 | 2019-07-05 | 山东天正起重机械有限公司 | A kind of crane end carriage automation pressurizing unit |
| CN110315484A (en) * | 2018-03-30 | 2019-10-11 | 中集车辆（集团）有限公司 | End carriage assembly equipment |
| CN111945699A (en) * | 2020-08-11 | 2020-11-17 | 中化明达(福建)地质勘测有限公司 | Static sounding device for geotechnical engineering and probe rod inserting method |
-
2017
- 2017-08-18 CN CN201721049170.4U patent/CN207043730U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109396825A (en) * | 2017-08-18 | 2019-03-01 | 东莞中集专用车有限公司 | The assembling and conveying device of special-purpose vehicle back end beam |
| CN110315484A (en) * | 2018-03-30 | 2019-10-11 | 中集车辆（集团）有限公司 | End carriage assembly equipment |
| CN108971850A (en) * | 2018-08-07 | 2018-12-11 | 江苏艾威机械制造有限公司 | A kind of Frame Welding clamping device |
| CN109967547A (en) * | 2019-04-22 | 2019-07-05 | 山东天正起重机械有限公司 | A kind of crane end carriage automation pressurizing unit |
| CN111945699A (en) * | 2020-08-11 | 2020-11-17 | 中化明达(福建)地质勘测有限公司 | Static sounding device for geotechnical engineering and probe rod inserting method |
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