CN205852152U - Upset frock - Google Patents
Upset frock Download PDFInfo
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- CN205852152U CN205852152U CN201620720954.4U CN201620720954U CN205852152U CN 205852152 U CN205852152 U CN 205852152U CN 201620720954 U CN201620720954 U CN 201620720954U CN 205852152 U CN205852152 U CN 205852152U
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- change
- roller
- upset frock
- riser
- pedestal
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Abstract
This utility model provides a kind of upset frock, including: pedestal；Change, is rotatably arranged on pedestal；Actuator and driving member, driving member is connected between change and actuator, and actuator drives change to rotate；Location structure, is arranged in change.The problem that the technical solution of the utility model solves the production continuity difference of tipper of the prior art.
Description
Technical field
This utility model relates to railway equipment and manufactures field, overturns frock in particular to one.
Background technology
In the manufacture process of railway freight-car, it is in Welding Structure railway freight-car car load manufacturing line that car body turns over weldering
Road core process, the to the effect that side plate of this operation and bottom side rail, side plate and the welding of corner post weld seam, in order to improve weld seam matter
Amount, need to be transformed into downhand weld by cross joint, therefore need to overturn car body positive and negative 90 degree, and the equipment of band motor vehicles bodies upset is car body
Tipper.Tipper of the prior art uses off-line type tipper.Wherein, the operation principle of off-line type tipper be
Being hung out from production line by car body before procedures and fall on tipper, clamping point is at the draw beam of central sill two ends, and operation is complete
Cheng Houzai hangs in production line.Tipper of the prior art has problems with: when production operation, and every chassis all needs to hang with overhead traveling crane
Enter to hang out tipper, destroy the continuity of production line, it is impossible to adapt to the production line balance of modernization.
Utility model content
Main purpose of the present utility model is to provide a kind of upset frock, to solve the life of tipper of the prior art
The problem producing continuity difference.
To achieve these goals, this utility model provides a kind of upset frock, including: pedestal；Change, rotationally
It is arranged on pedestal；Actuator and driving member, driving member is connected between change and actuator, and actuator drives change to rotate；
Location structure, is arranged in change.
Further, driving member includes gear, and change is provided with the driving groove coordinated with gear, and wherein, driving groove is
Multiple, circumferentially distributed along change of multiple driving grooves.
Further, the outer surface of change is provided with first annular convex tendon and the second annular convex rib, and upset frock also includes
Multiple connecting pins, connecting pin is connected between first annular convex tendon and the second annular convex rib, and multiple connecting pins are along the circumference of change
Distribution, forms driving groove between adjacent connecting pin.
Further, upset frock also includes supporting construction, and supporting construction is arranged in pedestal and supports change.
Further, supporting construction includes that roller, roller are rotatably arranged in pedestal, the outer peripheral face of roller and change
Outer peripheral face roll coordinate.
Further, pedestal includes underframe and the first riser being arranged on underframe and the second riser, and change is arranged on
Between first riser and the second riser, roller includes: the first roller, is rotatably arranged on the inner surface of the first riser；The
Second wheel, is rotatably arranged on the inner surface of the second riser, wherein, and the outer peripheral face of the first roller and the periphery of the second roller
Face all rolls with the outer peripheral face of change and coordinates.
Further, gear is arranged between the first roller and the second roller, and gear, the first roller and the second roller
It is coaxially disposed.
Further, supporting construction is two, and two supporting constructions are arranged at the lower section of change and are spaced setting.
Further, actuator is motor.
Further, location structure includes support and the puller bolt being arranged on support.
Application the technical solution of the utility model, when being subjected to, is transported to turn by car body by running tool
In ring, then start welding job.Actuator drives change to rotate and then drives car body to rotate.The aftercarriage welded transports out of
Change.Above-mentioned structure makes car body carry out on workflow waterline all the time when being subjected to, it is not necessary to hanging flowing water
Line.Therefore the technical solution of the utility model solve tipper of the prior art production continuity difference problem.
Accompanying drawing explanation
The Figure of description of the part constituting the application is used for providing being further appreciated by of the present utility model, this practicality
Novel schematic description and description is used for explaining this utility model, is not intended that improper restriction of the present utility model.
In the accompanying drawings:
Fig. 1 shows the structural representation of the embodiment according to upset frock of the present utility model；
Fig. 2 shows the structural representation of the change overturning frock in Fig. 1；
Fig. 3 shows the cooperation schematic diagram overturning the actuator of frock, driving member and change in Fig. 1；And
Fig. 4 shows that overturn frock and car body in Fig. 1 coordinates schematic diagram.
Wherein, above-mentioned accompanying drawing includes the following drawings labelling:
10, pedestal；11, underframe；12, the first riser；13, the second riser；20, change；21, driving groove；22, first annular
Convex tendon；23, the second annular convex rib；30, actuator；40, driving member；50, location structure；60, connecting pin；70, supporting construction；
71, the first roller；72, the second roller.
Detailed description of the invention
It should be noted that in the case of not conflicting, the embodiment in the application and the feature in embodiment can phases
Combination mutually.Describe this utility model below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
Below in conjunction with the accompanying drawing in the embodiment of the present application, the technical scheme in the embodiment of the present application is carried out clear, complete
Describe, it is clear that described embodiment is only some embodiments of the present application rather than whole embodiments wholely.Below
Description only actually at least one exemplary embodiment is illustrative, and never conduct to the application and application thereof or makes
Any restriction.Based on the embodiment in the application, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, broadly falls into the scope of the application protection.
It should be noted that term used herein above merely to describe detailed description of the invention, and be not intended to restricted root
Illustrative embodiments according to the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when using term " to comprise " in this manual and/or " bag
Include " time, it indicates existing characteristics, step, operation, device, assembly and/or combinations thereof.
Unless specifically stated otherwise, the parts illustrated the most in these embodiments and the table positioned opposite, digital of step
Reach formula and numerical value is not intended to scope of the present application.Simultaneously, it should be appreciated that for the ease of describing, each portion shown in accompanying drawing
The size divided not is to draw according to actual proportionate relationship.For technology, side known to person of ordinary skill in the relevant
Method and equipment may be not discussed in detail, but in the appropriate case, described technology, method and apparatus should be considered to authorize explanation
A part for book.It is shown here that any occurrence should be construed as merely exemplary with in all examples discussed, and
Not by way of limitation.Therefore, other example of exemplary embodiment can have different values.It should also be noted that similar label
In following accompanying drawing, represent similar terms with letter, therefore, the most a certain Xiang Yi accompanying drawing is defined, then attached subsequently
Figure need not it is further discussed.
In the description of the present application, it is to be understood that the noun of locality such as " forward and backward, upper and lower, left and right ", " horizontal, vertical,
Vertically, level " and the indicated orientation such as " top, the end " or position relationship be normally based on orientation shown in the drawings or position and close
System, is for only for ease of description the application and simplifies description, and in the case of illustrating on the contrary, these nouns of locality do not indicate that
Must have specific orientation or with specific azimuth configuration and operation with device or the element of hint indication, therefore can not manage
Solve as the restriction to the application protection domain；The noun of locality " inside and outside " refers to inside and outside the profile relative to each parts itself.
For the ease of describing, space relative terms here can be used, as " ... on ", " ... top ",
" at ... upper surface ", " above " etc., be used for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation levied.It should be appreciated that space relative terms is intended to comprise except the described in the drawings orientation of device
Outside different azimuth in use or operation.Such as, if the device in accompanying drawing is squeezed, then it is described as " at other devices
Part or structure above " or " other devices or structure on " device after will be positioned as " other devices or construct under
Side " or " under other devices or structure ".Thus, exemplary term " ... top " can include " ... top " and
" in ... lower section " two kinds of orientation.This device can also other different modes location (90-degree rotation or be in other orientation), and
And space used herein above described relatively make respective explanations.
Furthermore, it is necessary to explanation, the word such as " first ", " second " is used to limit parts, it is only for be easy to
Distinguishing corresponding parts, as not having Stated otherwise, above-mentioned word does not has particular meaning, therefore it is not intended that to this
The restriction of application protection domain.
It is one core process in Welding Structure railway freight-car car load manufacturing line that car body turns over weldering, this operation main
Content is side plate and bottom side rail, side plate and the welding of corner post weld seam, in order to improve weldquality, cross joint need to be transformed into downhand welding
Seam, therefore needs to overturn car body positive and negative 90 degree, and the equipment of band motor vehicles bodies upset is car-body dumper.According to current application feelings
Condition, car-body dumper has the structure application form such as off-line type, half-ring.
The operation principle of off-line type tipper is to be hung out from production line by car body before procedures and fall at tipper
On, clamping point is at the draw beam of central sill two ends, and operation hangs in production line after completing again.During different automobile types of every time changing the line of production, not only need
According to vehicle length adjustment main Partner spacing and tie-beam length, and need to again check position of centre of gravity and adjust accordingly.From
The shortcoming of wire type tipper is: (1) every chassis all needs to hang in overhead traveling crane to hang out, and destroys the continuity of production line, it is impossible to adapt to
The production line balance of modernization；(2) vehicle adaptivity is poor, and workload of changing the line of production is big.(3) work high above the ground not only increases frequently
Manpower and materials machine power consumes, and causes a lot of potential safety hazard.
Half-ring car-body dumper is tipper type the most newly developed, is adapted to production line balance, this turns over
The operation principle of favourable turn is that semi-ring can move along width of the carbody direction, and during procedures, semi-ring merges clamping car body band motor-car
Body overturns, and after procedures completes, semi-ring is backed out, and car body passes through, and clamping point is at bottom side rail and lateral column.(1) procedures is complete
After one-tenth, two semi-rings need to be backed out so that car body passes through, and therefore platform bit width direction dimensional requirement is relatively big, and correspondingly increases auxiliary
Time；(2), after semi-ring is backed out, locking mechanism wants reliable, and not so semi-ring is easy to fall off, therefore there is certain potential safety hazard.
As shown in Figure 1 to Figure 3, the upset frock of the present embodiment, including pedestal 10, change 20, actuator 30 and driving member
40.Wherein, change 20 is rotatably arranged on pedestal 10, and driving member 40 is connected between change 20 and actuator 30, drives
Part 30 drives change 20 to rotate；Location structure 50, is arranged in change 20.
The technical scheme of application the present embodiment, when being subjected to, is transported to change by running tool by car body
In 20, then start welding job.Actuator 30 drives change 20 to rotate and then drives car body to rotate.The aftercarriage welded
Transport out of change 20.Above-mentioned structure makes car body carry out on workflow waterline all the time when being subjected to, it is not necessary to hanging
From streamline.Therefore the technical solution of the utility model solves poor the asking of production continuity of tipper of the prior art
Topic.
As shown in Figures 2 and 3, in the technical scheme of the present embodiment, driving member 40 includes gear, and change 20 is provided with
The driving groove 21 coordinated with gear, wherein, driving groove 21 is multiple, circumferentially distributed along change 20 of multiple driving grooves 21.Specifically
Ground, driving groove 21 can be formed by various structures, and such as driving groove 21 can be one-body molded on the outer peripheral face of change 20, or
Person is the driving groove 21 formed by other structures.Actuator 30 drives pinion rotation, coordinates with driving groove 21, enter after pinion rotation
And drive change 20 to rotate.
As it is shown on figure 3, in the technical scheme of the present embodiment, the outer surface of change 20 is provided with first annular convex tendon 22 He
Second annular convex rib 23, upset frock also includes multiple connecting pin 60, and connecting pin 60 is connected to first annular convex tendon 22 and second
Between annular convex rib 23, circumferentially distributed along change 20 of multiple connecting pins 60, form driving groove 21 between adjacent connecting pin 60.
Specifically, first annular convex tendon 22 and the second annular convex rib 23 are arranged parallel, and one end of connecting pin 60 is connected to first annular convex
On muscle 22, the other end is connected on the second annular convex rib 23.Above-mentioned driving groove 21 is defined between adjacent connecting pin 60.Often
Distance between individual adjacent connecting pin 60 can determine according to the parameter of gear.
As it is shown on figure 3, in the technical scheme of the present embodiment, upset frock also includes supporting construction 70, supporting construction 70
In being arranged on pedestal 10 and support change 20.Supporting construction 70 includes that roller, roller are rotatably arranged in pedestal 10, roller
The outer peripheral face of outer peripheral face and change 20 roll and coordinate.On the one hand change 20 is played a supporting role by roller, on the other hand when turning
When ring 20 rotates, for rolling friction between change 20 and roller, and then reduce the frictional force between change 20 and supporting construction, enter
And it is more stable to make equipment run.
As it is shown on figure 3, in the technical scheme of the present embodiment, pedestal 10 includes underframe 11 and is arranged on underframe 11
First riser 12 and the second riser 13, change 20 is arranged between the first riser 12 and the second riser 13.Roller includes the first rolling
Wheel 71 and the second roller 72.Wherein, the first roller 71 is rotatably arranged on the inner surface of the first riser 12.Second roller 72
Be rotatably arranged on the inner surface of the second riser 13, the outer peripheral face of the first roller 71 and the outer peripheral face of the second roller 72 all with
The outer peripheral face of change 20 rolls and coordinates.First roller 71 and the second roller 72 lay respectively at the both sides of change 20 thus play change
To stable support.
As it is shown on figure 3, in the technical scheme of the present embodiment, gear be arranged on the first roller 71 and the second roller 72 it
Between, and gear, the first roller 71 and the second roller 72 be coaxially disposed.Said structure makes gear, the first roller 71 and second
Compact conformation between roller 72, it is simple to assembling.
Preferably, supporting construction 70 is two, and two supporting constructions 70 are arranged at the lower section of change 20 and are spaced setting.
In the present embodiment, actuator 30 is motor.And preferably, motor is motor, and motor can be right
The position of change 20 is accurately controlled.
As shown in Figure 4, location structure 50 includes support and the puller bolt being arranged on support.Puller bolt is to car body
Location and the effect held out against can be played.
According to said structure, the upset frock of the application has a following characteristics:
A kind of novel by formula domain car-body dumper, it is mainly used in various types of railway freight-car, representative products is
C70E type universal gondola car, P70 type general-purpose box car, P80 type general-purpose box car, L70 type foodstuff hopper wagon and C80B type fortune coal open-top car.
Mainly seat, machine driving is supported by active rotation ring, driven rotating ring, rotating ring by formula domain car-body dumper
The part composition such as walk on stage in system, car body clamp system, car lifting J-Horner and side
Rotating ring: domain formula rotating ring manufactures for convenience, transports and heat treatment, is assembled, as above by two semi-rings
State conditions permit, also can domain welding manufacture and processing.The design size of rotating ring has taken into full account above-mentioned different kinds of railways lorry
Vehicle, it is achieved its unwheeling, upset and the space required for function such as pass through, and take into account Factory Building and sky height and technique planar cloth
Platform bit width in Ju.There is the installation seat plate of clamp system the internal both sides of rotating ring, and bottom is provided with and connects with production line track
A bit of track, to complete the function that car body passes through.Pin tooth, gear or welding can be set according to kind of drive difference on rotating ring
Chain, Fig. 3 is the rotating ring example of pin tooth transmission.
Support and transmission: rotating ring supports seat support and two functions of torque drive.Support roller to be used for supporting rotating ring
And the weight of car body；Arranging drive mechanism supporting on seat, motor torque is transferred to rotating ring by reductor and supports seat, supports
Rotating ring can be transmitted torque to according to kind of drive difference again by gear, Chain conveyer or pin tooth transmission on Zuo, thus carry
Dynamic rotating ring rotates.Power transmission shaft can be coaxial with support shaft, it is also possible to separately looks for position to arrange supporting on seat.Fig. 3 is that pin tooth passes
Dynamic and that support shaft power transmission shaft is coaxial schematic diagram.
Car body fix to clamp a little at bottom side rail and top side rail, distribution situation is bottom side rail bottom surface 4 point, bottom side rail side
4 points, top side rail side 4 point.Clamp system divides upper and lower two parts, and bottom clamp system provides 8 on bottom side rail to fix to clamp
Point, structure is screw jackscrew structure, and position can be adjusted according to vehicle size difference；Upper pinch mechanism provides top side rail
4 clamping points, for convenience of operation, by sprocket wheel chain drive, operating side is reduced to lower section, such operator just can be
Ground carries out the operation of upper pinch, and because vehicle is different, upside depth of beam also has large range of change in size, therefore upper
The bolt hole that on the installation seat plate of portion's clamping device, setting space is equal, adjusts the short transverse of upper pinch device
Whole, top side rail spacing this for L70 and other vehicles differ bigger vehicle, arrange its special jackscrew, enter when changing the line of production
Row modularity is changed.Clamping mode is manually, easy and simple to handle, safe and reliable.
The upset frock of the application can adapt to production line balance, and this kind of domain formula car-body dumper is the upset by formula
Machine, procedures completes aftercarriage and can lead into next platform position by ground rail, it is not necessary to as off-line type tipper,
Hang out from streamline and hang in, it is achieved that the streamline application of domain formula car-body dumper, making whole piece car body production line
More completely more smooth.Improve the level of modernization of equipment.
The upset frock of the application can adapt to various, and workload of changing the line of production is little, and this kind is overturn by formula domain car body
Machine is applicable to the length all open-top cars between 10600～26000mm, box car and grain car, has certainly for major part vehicle
Adaptability, is made without any adjustment when changing the line of production, upper and lower sides case bay this for grain car changes greatly with other vehicle
Vehicle, also have only to when changing the line of production modularity change local widget be suitable for, therefore this kind by formula domain tipper not
Only vehicle strong adaptability, and adjustment workload of changing the line of production is little.
The upset tool structure of the application is compact, takes up room little, the centre-to-centre spacing Factory Building of domain formula car-body dumper platform position
Wall lateral column subcenter is 4000mm, and this is also the restriction requirement of site technique plane figure, this space requirement half-ring car body
Tipper is unable to reach, because half-ring car-body dumper is when car body passes through, must be separated by semi-ring and retreat and concede to both sides
The space of track, the stroke that semi-ring retreats inherently occupies the biggest space.Therefore this kind of domain formula car-body dumper is because of sky
Between limit, structure design closely, it is adaptable to operation plane figure is had the application scenario of size restriction requirements.
The upset tool structure production efficiency of the application improves, and the productive temp of domain formula car-body dumper is 30min/
Platform, the productive temp of off-line type tipper is about 40min/ platform, and production efficiency increases.Domain formula car-body dumper is because being
By formula, and adapt to production line balance, be not required to as off-line type tipper lift up into car body hang out, save manpower and materials,
Also production efficiency is improve in terms of cost-effective.
The upset frock safety of the application improves, and first shows that car body is permissible by the safety of formula domain tipper
Directly pass through, need not be required for hanging in and hang out by every chassis as off-line type tipper, decrease work high above the ground, it is to avoid therefore
And the potential safety hazard produced.Next shows that the structure of domain formula has self stability, unlike half-ring needs locking mechanism
Fix semi-ring, otherwise hemizonid meeting landing, thus avoid the potential safety hazard caused because of locking mechanism inefficacy, improve peace
Quan Xing.
Additionally, in the design of electrical system, utilize electrical interlocks, prevent operator's maloperation, leakage operation etc. from steel being tied
Destruction that construction system causes and therefore the personal safety hidden danger caused.
The foregoing is only preferred embodiment of the present utility model, be not limited to this utility model, for this
For the technical staff in field, this utility model can have various modifications and variations.All in spirit of the present utility model and principle
Within, any modification, equivalent substitution and improvement etc. made, within should be included in protection domain of the present utility model.
Claims (10)
1. a upset frock, it is characterised in that including:
Pedestal (10)；
Change (20), is rotatably arranged on described pedestal (10)；
Actuator (30) and driving member (40), described driving member (40) be connected to described change (20) and described actuator (30) it
Between, described actuator (30) drives described change (20) to rotate；
Location structure (50), is arranged in described change (20).
Upset frock the most according to claim 1, it is characterised in that described driving member (40) includes gear, described change
(20) being provided with the driving groove (21) coordinated with described gear on, wherein, described driving groove (21) is multiple, multiple described transmissions
Groove (21) is circumferentially distributed along described change (20).
Upset frock the most according to claim 2, it is characterised in that the outer surface of described change (20) is provided with the first ring
Shape convex tendon (22) and the second annular convex rib (23), described upset frock also includes multiple connecting pin (60), described connecting pin (60)
Being connected between described first annular convex tendon (22) and described second annular convex rib (23), multiple described connecting pins (60) are along described
Change (20) circumferentially distributed, forms described driving groove (21) between adjacent described connecting pin (60).
Upset frock the most according to claim 2, it is characterised in that described upset frock also includes supporting construction (70),
Described supporting construction (70) is arranged in described pedestal (10) and supports described change (20).
Upset frock the most according to claim 4, it is characterised in that described supporting construction (70) includes roller, described rolling
In wheel is rotatably arranged in described pedestal (10), the outer peripheral face rolling of the outer peripheral face of described roller and described change (20) is joined
Close.
Upset frock the most according to claim 5, it is characterised in that described pedestal (10) includes underframe (11) and arranges
The first riser (12) on described underframe (11) and the second riser (13), described change (20) is arranged on described first riser
(12) and between described second riser (13), described roller includes:
First roller (71), is rotatably arranged on the inner surface of described first riser (12)；
Second roller (72), is rotatably arranged on the inner surface of described second riser (13),
Wherein, the outer peripheral face of the outer peripheral face of described first roller (71) and described second roller (72) all with described change (20)
Outer peripheral face rolls and coordinates.
Upset frock the most according to claim 6, it is characterised in that described gear be arranged on described first roller (71) and
Between described second roller (72), and described gear, described first roller (71) and described second roller (72) are coaxially disposed.
Upset frock the most according to claim 4, it is characterised in that described supporting construction (70) is two, described in two
Supporting construction (70) is arranged at the lower section of described change (20) and is spaced setting.
Upset frock the most according to claim 1, it is characterised in that described actuator (30) is motor.
Upset frock the most according to claim 1, it is characterised in that described location structure (50) includes support and sets
Put puller bolt on the bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620720954.4U CN205852152U (en) | 2016-07-08 | 2016-07-08 | Upset frock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620720954.4U CN205852152U (en) | 2016-07-08 | 2016-07-08 | Upset frock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205852152U true CN205852152U (en) | 2017-01-04 |
Family
ID=57646816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620720954.4U Active CN205852152U (en) | 2016-07-08 | 2016-07-08 | Upset frock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205852152U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108674687A (en) * | 2018-05-23 | 2018-10-19 | 成都飞机工业（集团）有限责任公司 | A kind of planer-type flexibility deflection turn-over device |
| CN111360478A (en) * | 2018-12-25 | 2020-07-03 | 长沙衡开智能科技有限公司 | Open type wheel type welding positioner |
| CN111889944A (en) * | 2020-08-06 | 2020-11-06 | 中车唐山机车车辆有限公司 | Frame type chassis overturning tool |
| CN112236565A (en) * | 2017-11-11 | 2021-01-15 | 康克斯科技公司 | Method and device for the precise production of a torque connection assembly |
-
2016
- 2016-07-08 CN CN201620720954.4U patent/CN205852152U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112236565A (en) * | 2017-11-11 | 2021-01-15 | 康克斯科技公司 | Method and device for the precise production of a torque connection assembly |
| CN112236565B (en) * | 2017-11-11 | 2022-04-08 | 康克斯科技公司 | Method and device for the precise production of a torque connection assembly |
| US11717921B2 (en) | 2017-11-11 | 2023-08-08 | Conxtech, Inc. | Method and apparatus for precision manufacturing of moment connection assemblies |
| CN108674687A (en) * | 2018-05-23 | 2018-10-19 | 成都飞机工业（集团）有限责任公司 | A kind of planer-type flexibility deflection turn-over device |
| CN111360478A (en) * | 2018-12-25 | 2020-07-03 | 长沙衡开智能科技有限公司 | Open type wheel type welding positioner |
| CN111889944A (en) * | 2020-08-06 | 2020-11-06 | 中车唐山机车车辆有限公司 | Frame type chassis overturning tool |
| CN111889944B (en) * | 2020-08-06 | 2022-03-22 | 中车唐山机车车辆有限公司 | Frame type chassis overturning tool |
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