CN203610897U - Self-made car body skeleton assembling mold of passenger car - Google Patents

Self-made car body skeleton assembling mold of passenger car Download PDF

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Publication number
CN203610897U
CN203610897U CN201320869477.4U CN201320869477U CN203610897U CN 203610897 U CN203610897 U CN 203610897U CN 201320869477 U CN201320869477 U CN 201320869477U CN 203610897 U CN203610897 U CN 203610897U
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China
Prior art keywords
mold
gusset mold
self
side gusset
gusset
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CN201320869477.4U
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Chinese (zh)
Inventor
张娟
赵明远
唐兴明
宁军涛
李喆
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Sinotruk Jinan Power Co Ltd
China National Heavy Duty Truck Group Jinan Power Co Ltd
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China National Heavy Duty Truck Group Jinan Power Co Ltd
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Priority to CN201320869477.4U priority Critical patent/CN203610897U/en
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Abstract

The utility model discloses a self-made car body skeleton assembling mold of a passenger car, which belongs to the technical field of car body skeleton assembling. The technical scheme is as follows: the self-made car body skeleton assembling mold comprises a mold fixed platform, and is characterized in that the car body skeleton assembling mold consists of a car body bottom skeleton positioning mechanism, a car body side skeleton clamping mechanism, a rear wall positioning mechanism and an undercarriage linear slide-rail mechanism. The self-made car body skeleton assembling mold has the beneficial effects that compared with the traditional assembling device, simplicity in operation is realized, easiness in fixation is realized by adopting the car body side skeleton clamping mechanism and an L-shaped positioning block, convenience in use is realized by adopting a self-locking clamp, a side wall mold fixing hook can rotate, so that a car skeleton is convenient to fix, no investment in a power device and a hydraulic device is needed, and the production cost is reduced; in addition, by adopting the positioning block, the self-locking clamp and the side wall mold fixing hook, the size can be precisely positioned, more flexibility and convenience in operation can be realized, and the investment in the assembling device can be reduced.

Description

A kind of passenger vehicle self-control body frame closes tire tool
Technical field
The utility model belongs to body frame and closes car technical field, is specifically related to a kind of passenger vehicle self-control body frame and closes tire tool.
Background technology
Now, in the technological process of passenger vehicle, the skeleton assembly welding of vehicle body is that bus body closes the most key operation in car production.This operation is not only determining the fitted position precision of vehicle body, is also restricting the production efficiency of automobile welding lines simultaneously.At present domestic and international major company, for improving assembly precision and production efficiency, mainly adopts special together equipment, once completes the assembly welding moulding of vehicle body location by this equipment, and this kind of equipment investment is huge.Closing in car process, because of the larger malfunction of equipment, while making to close car, produce error, cause the location inaccuracy of skeleton, close car quality and close car precision thereby reduced skeleton.
In order to reduce enterprise, vehicle body is closed the investment of vehicle device, improve car skeleton and close car quality and close car precision, a kind of can be the pinpoint favor of closing tire tool and be more and more subject to enterprise of bus body skeleton.
Utility model content
In order to solve the deficiency of above-mentioned prior art, the purpose of this utility model is: provide one can make passenger car skeleton accurately locate, and handled easily, the bus body skeleton that raising car skeleton closes car quality closes tire tool.
A kind of passenger vehicle self-control body frame closes tire tool, comprise mold fixed platform, it is characterized in that, described passenger vehicle self-control body frame closes tire tool and comprises framework location mechanism at the bottom of vehicle body, body side skeleton clamp mechanism, back wall detent mechanism and underframe line slide rail mechanism:
At the bottom of described vehicle body, framework location mechanism is made up of end framework location seat and the support bar that is arranged on framework location seat bottom, the end.
Described body side skeleton clamp mechanism arranges respectively in the mold fixed platform of framework location mechanism both sides at the bottom of vehicle body, it comprises locating piece, self-locking clip clamper, gusset mold stay hook and left side gusset mold and right side gusset mold, described locating piece is arranged on respectively the two ends of left side gusset mold and right side gusset mold top cross beam, described self-locking clip clamper is separately positioned on the crossbeam between left side gusset mold and gusset mold top, right side locating piece, described gusset mold stay hook is fixedly mounted on respectively the two ends of left side gusset mold and right side gusset mold base cross members.
Described back wall clamp mechanism comprises positioning support stand and locating support, described positioning support stand be separately positioned on window along under crossbeam and window along the homonymy of the left side gusset mold between crossbeam and right side gusset mold, described locating support is connected with positioning support stand.
Described underframe line slide rail mechanism comprises guide-track groove, roller bearing, left-side holder and right side wall holder and roller, described guide-track groove is separately positioned in the mold fixed platform in left side gusset mold and right side gusset mold outside, and vertical with right side gusset mold base cross members with left side gusset mold respectively, described roller bearing is arranged in mold fixed platform, and vertical with described guide-track groove, described roller one end is arranged on left-side holder or right side wall holder, and one end is placed in roller bearing and guide-track groove spacing.
Described end framework location seat is combined into by channel-section steel, and the ladder rack parallel with mold fixed platform, in the bottom of described ladder rack, support bar is set, at least four of described support bars, and vertical with mold fixed platform, its one end is connected with mold fixed platform, and the other end is connected with ladder rack.
Described locating piece is " L " shape locating piece, described " L " shape locating piece top is arranged on respectively the two ends of left side gusset mold and right side gusset mold top cross beam, the external part of described " L " shape locating piece is free state, and the width of described " L " shape locating piece is along horizontal depth of beam on left side gusset mold or right side gusset mold window; Described self-locking clip clamper and described locating piece side by side, and are equidistantly separately positioned on the crossbeam between left side gusset mold and gusset mold top, right side locating piece.
Described left side gusset mold and right side gusset mold are asymmetric, and described left side gusset mold and right side gusset mold determine according to the profile of left car skeleton and right car skeleton, and the engineers and technicians that are this areas due to car skeleton profile know, therefore repeat no more.
Described locating support is square pole, described square pole is arranged on positioning support stand, and its one end is connected with positioning support stand, and the other end is free state, described locating support edge is 0 °~100 ° with positioning support stand junction rotation angle range, for fixing of rear wall frame.
Homonymy at described left-side holder and right side wall holder arranges respectively oblique band ladder, described oblique band ladder bottom is fixed on left-side holder and right side wall holder, its top respectively with on the window of left side gusset mold and right side gusset mold along being connected along crossbeam under crossbeam and window, in described oblique band ladder both sides, guardrail is installed.
Top, workshop directly over framework location mechanism at the bottom of described vehicle body arranges parietal bone frame handling apparatus, described parietal bone frame handling apparatus is by the steelframe that is provided with chute, the steel column of supporting steel frame, the suspension hook vertical with steel column, the handling vehicle body parietal bone frame dolly composition that is entrenched in the crane girder in steelframe chute and move left and right on steelframe, described steelframe is arranged on top, workshop, at described steelframe two ends, steel column is set, described steel column is provided with chute, the chute of described suspension hook and steel column is slidably matched, described steel column one end is connected with steelframe, the other end is fixed on workshop ground surface, described crane girder is connected with handling vehicle body parietal bone frame dolly.
Described gusset mold stay hook comprises hook limited block, gusset mold stay hook steel plate, be arranged on the stay hook of gusset mold stay hook steel plate bottom, and by gusset mold stay hook steel plate and the fixing spring of stay hook, the hook of gusset mold stay hook steel plate is fixed in described spring one end, the other end is connected with the hook of stay hook, described hook limited block is fixedly mounted in the mold fixed platform of gusset mold stay hook steel plate below, bolt is fixed in left side gusset mold and right side gusset mold, be connected on gusset mold stay hook steel plate by spring, rotation gusset mold stay hook, be suspended from hook limited block, the described gusset mold stay hook anglec of rotation is-60 °~60 °.
When the utility model operation, the artificial outer fix that promotes left-side holder and right side wall holder, now roller bearing is fixed, and roller is placed in roller bearing and guide-track groove spacing, on guide-track groove, do straight reciprocating motion, the mobile width that guarantees body frame of left-side holder and right side wall holder; After framework location at the bottom of vehicle body is fixing, left side gusset mold and right side gusset mold respectively take on window along crossbeam as benchmark, stand up and be fixedly mounted on the left-side holder and right side wall holder that closes tire tool; The longeron width that locating piece supports gusset skeleton portion position will coincide with the size of the supporting surface of positioning support stand, operation is welded on left side gusset mold and right side gusset encloses the self-locking clip clamper on mold, side wall frame is clamped, after side wall frame is fixing, promote left-side holder and right side wall holder, it is moved in underframe line slide rail mechanism, roller moves on guide-track groove, advance mold fixed platform both sides to body width position, position according to skeleton limit longeron at the bottom of vehicle body and limit crossbeam size; After left and right gusset skeleton and end skeleton are accurately located, make the rotation of gusset mold stay hook, be suspended from hook limited block, at the bottom of vehicle body, the support bar of framework location mechanism is welded on mold fixed platform, and left side gusset mold and right side gusset enclose mold and be welded on respectively on left-side holder and right side wall holder; Combination is after mold completes, and the dolly of operation parietal bone frame handling apparatus, slings parietal bone frame, transports and is horizontally fixed on left and right gusset frame assembly, with welding or riveting method connects; The locating support of operation back wall clamp mechanism is to certain angle, body rear wall skeleton is stood up, be fixed on the supporting surface of positioning support stand, rotation locating support clamps body rear wall skeleton, behind location, by the mode of welding, docking contact-making surface is welded, complete the large skeleton of vehicle body five and close turner order.
By test, the beneficial effects of the utility model are: simple operation, body side skeleton clamp mechanism, " L " shape locating piece, be easy to fix, self-locking clip clamper, easy to use, gusset mold stay hook is rotatable, be convenient to fixing car skeleton, do not need power-equipment, hydraulic test to invest, reduced production cost, in addition, adopt locating piece, self-locking clip clamper, gusset mold stay hook, can precise positioning rule cun, convenient more flexibly in the time of operation, can reduce the investment of involutory vehicle device.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment.
Fig. 2 is the parietal bone frame handling apparatus of the utility model embodiment.
Wherein, Reference numeral is: 1, mold fixed platform; 2, framework location mechanism at the bottom of vehicle body; 3, body side skeleton clamp mechanism; 4, back wall detent mechanism; 5, parietal bone frame handling apparatus; 6, underframe line slide rail mechanism; 7, oblique band ladder; 21, ladder rack; 22, support bar; 31, locating piece; 32, self-locking clip clamper; 33, gusset mold stay hook; 34, left side gusset mold; 35, right side gusset mold; 36, left-side holder; 37, right side wall holder; 38, crossbeam; 41, positioning support stand; 42, locating support; 43, on window along crossbeam; 44, under window along crossbeam; 51, steelframe; 52, steel column; 53, suspension hook; 54, crane girder; 55, dolly; 61, guide-track groove; 62, ball; 63, roller; 71, guardrail.
The specific embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Certainly, specific embodiment described herein is only in order to explain the utility model, and is not used in restriction the utility model.
Embodiment:
Referring to Fig. 1, Fig. 2, the utility model is that a kind of passenger vehicle self-control body frame closes tire tool, comprise mold fixed platform 1, it is characterized in that, described passenger vehicle self-control body frame closes tire tool and comprises framework location mechanism 2 at the bottom of vehicle body, body side skeleton clamp mechanism 3, back wall detent mechanism 4 and underframe line slide rail mechanism 6:
At the bottom of described vehicle body, framework location mechanism 2 is made up of end framework location seat and the support bar 22 that is arranged on framework location seat bottom, the end.
Described body side skeleton clamp mechanism 3 arranges respectively in the mold fixed platform 1 of framework location mechanism 2 both sides at the bottom of vehicle body, it comprises locating piece 31, self-locking clip clamper 32, gusset mold stay hook 33 and left side gusset mold 34 and right side gusset mold 35, described locating piece 31 is arranged on respectively the two ends of left side gusset mold 34 and right side gusset mold 35 top cross beam 38, described self-locking clip clamper 32 is separately positioned on the crossbeam 38 between left side gusset mold 34 and right side gusset mold 35 top locating pieces 31, described gusset mold stay hook 33 is fixedly mounted on respectively the two ends of left side gusset mold 34 and right side gusset mold 35 base cross members 38.
Described back wall clamp mechanism 4 comprises positioning support stand 41 and locating support 42, described positioning support stand 41 be separately positioned on window along under crossbeam 43 and window along the homonymy of the left side gusset mold 34 between crossbeam 44 and right side gusset mold 35, described locating support 42 is connected with positioning support stand 41.
Described underframe line slide rail mechanism 6 comprises guide-track groove 61, roller bearing 62, left-side holder 36 and right side wall holder 37 and roller 63, described guide-track groove 61 is separately positioned in the mold fixed platform 1 in left side gusset mold 34 and gusset mold 35 outsides, right side, and vertical with right side gusset mold 35 base cross members 38 with left side gusset mold 34 respectively, described roller bearing 62 is arranged in mold fixed platform 1, and vertical with described guide-track groove 61, described roller 62 one end are arranged on left-side holder 36 or right side wall holder 37, one end is placed in roller bearing 62 and guide-track groove 61 spacing.
Described end framework location seat is combined into by channel-section steel, and the ladder rack 21 parallel with mold fixed platform 1, in the bottom of described ladder rack 21, support bar 22 is set, 22 at least four of described support bars, and vertical with mold fixed platform 1, its one end is connected with mold fixed platform 1, and the other end is connected with ladder rack 21.
Described locating piece 31 is " L " shape locating pieces, described " L " shape locating piece top is arranged on respectively the two ends of left side gusset mold 34 and right side gusset mold 35 top cross beam 38, the external part of described " L " shape locating piece is free state, and the width of described " L " shape locating piece is the height along crossbeam 43 on left side gusset mold 34 or right side gusset mold 35 windows; Described self-locking clip clamper 32 and described locating piece 31 side by side, and are equidistantly separately positioned on the crossbeam 38 between left side gusset mold 34 and right side gusset mold 35 top locating pieces 31
Described left side gusset mold 34 is asymmetric with right side gusset mold 35, and described left side gusset mold 34 is determined according to the profile of left car skeleton and right car skeleton with right side gusset mold 35, the engineers and technicians that are this areas due to car skeleton profile know, therefore repeat no more.
Described locating support 42 is square poles, described square pole is arranged on positioning support stand 41, and its one end is connected with positioning support stand 41, and the other end is free state, described locating support 42 edges are 0 °~100 ° with positioning support stand 41 junction rotation angle ranges, for fixing of rear wall frame.
Homonymy at described left-side holder 36 and right side wall holder 37 arranges respectively oblique band ladder 7, described oblique band ladder 7 bottoms are fixed on left-side holder 36 and right side wall holder 37, its top respectively with on the window of left side gusset mold 34 and right side gusset mold 35 along being connected along crossbeam 44 under crossbeam 43 and window, in described oblique band ladder 7 both sides, guardrail 71 is installed.
Top, workshop directly over framework location mechanism 2 at the bottom of described vehicle body arranges parietal bone frame handling apparatus 5, described parietal bone frame handling apparatus 5 is by the steelframe 51 that is provided with chute, the steel column 52 of supporting steel frame 51, the suspension hook 53 vertical with steel column 52, the handling vehicle body parietal bone frame dolly 55 that is entrenched in the crane girder 54 in steelframe 51 chutes and move left and right on steelframe 51 forms, described steelframe 51 is arranged on top, workshop, at described steelframe 51 two ends, steel column 52 is set, described steel column 52 is provided with chute, described suspension hook 53 is slidably matched with the chute of steel column 52, described steel column 52 one end are connected with steelframe 51, the other end is fixed on workshop ground surface, described crane girder 54 is connected with handling vehicle body parietal bone frame dolly 55.
Described gusset mold stay hook 33 comprises hook limited block 331, gusset mold stay hook steel plate 332, be arranged on the stay hook 333 of gusset mold stay hook steel plate 332 bottoms, and by gusset mold stay hook steel plate 332 and the fixing spring 334 of stay hook 333, the hook 335 of gusset mold stay hook steel plate 332 is fixed in described spring 334 one end, the other end is connected with the hook 335 of stay hook 333, described hook limited block 331 is fixedly mounted in the mold fixed platform 1 of gusset mold stay hook steel plate 332 belows, bolt is fixed in left side gusset mold 34 and right side gusset mold 35, be connected on gusset mold stay hook steel plate 332 by spring 334, rotation gusset mold stay hook 33, be suspended from hook limited block 331, described gusset mold stay hook 33 anglecs of rotation are-60 °~60 °.
When the utility model operation, the artificial outer fix that promotes left-side holder 36 and right side wall holder 37, now roller bearing 62 is fixing, roller 63 is placed in roller bearing 62 and guide-track groove 61 spacing, on guide-track groove 61, do straight reciprocating motion, the mobile width that guarantees body frame of left-side holder 36 and right side wall holder 37; After framework location at the bottom of vehicle body is fixing, left side gusset mold 34 and right side gusset mold 35 respectively take on window along crossbeam 43 as benchmark, stand up and be fixedly mounted on the left-side holder 36 and right side wall holder 37 that closes tire tool; Locating piece 31 supports the size of the longeron width of gusset skeleton portion position and the supporting surface of positioning support stand 41 and coincide, operation is welded on left side gusset mold 34 and right side gusset encloses the self-locking clip clamper 32 on mold 35, side wall frame is clamped, after side wall frame is fixing, promote left-side holder 36 and right side wall holder 37, it is moved in underframe line slide rail mechanism 6, roller 63 moves on guide-track groove 61, advance mold fixed platform 1 both sides to body width position, position according to skeleton limit longeron at the bottom of vehicle body and limit crossbeam size; After left and right gusset skeleton and end skeleton are accurately located, gusset mold stay hook 33 is rotated, be suspended from hook limited block 331, at the bottom of vehicle body, the support bar of framework location mechanism 2 is welded on mold fixed platform 1, and left side gusset mold 34 and right side gusset enclose mold 35 and be welded on respectively on left-side holder 36 and right side wall holder 37; Combination is after mold completes, and the dolly 55 of operation parietal bone frame handling apparatus 5, slings parietal bone frame, transports and is horizontally fixed on left and right gusset frame assembly, with welding or riveting method connects; The locating support 42 of operation back wall clamp mechanism 4 is to certain angle, body rear wall skeleton is stood up, be fixed on the supporting surface of positioning support stand 41, rotation locating support 42 clamps body rear wall skeleton, behind location, by the mode of welding, docking contact-making surface is welded, complete the large skeleton of vehicle body five and close turner order.
The utility model can pass through or adopt existing techniques in realizing without the technical characterictic of describing; do not repeat them here; certainly; above-mentioned explanation is not to restriction of the present utility model; the utility model is also not limited in above-mentioned giving an example; variation, remodeling, interpolation or replacement that those skilled in the art make in essential scope of the present utility model, also should belong to protection domain of the present utility model.

Claims (7)

1. a passenger vehicle self-control body frame closes tire tool, comprise mold fixed platform, it is characterized in that, described passenger vehicle self-control body frame closes tire tool and comprises framework location mechanism at the bottom of vehicle body, body side skeleton clamp mechanism, back wall detent mechanism and underframe line slide rail mechanism:
At the bottom of described vehicle body, framework location mechanism is made up of end framework location seat and the support bar that is arranged on framework location seat bottom, the end;
Described body side skeleton clamp mechanism arranges respectively in the mold fixed platform of framework location mechanism both sides at the bottom of vehicle body, it comprises locating piece, self-locking clip clamper, gusset mold stay hook and left side gusset mold and right side gusset mold, described locating piece is arranged on respectively the two ends of left side gusset mold and right side gusset mold top cross beam, described self-locking clip clamper is separately positioned on the crossbeam between left side gusset mold and gusset mold top, right side locating piece, described gusset mold stay hook is fixedly mounted on respectively the two ends of left side gusset mold and right side gusset mold base cross members,
Described back wall clamp mechanism comprises positioning support stand and locating support, described positioning support stand be separately positioned on window along under crossbeam and window along the homonymy of the left side gusset mold between crossbeam and right side gusset mold, described locating support is connected with positioning support stand;
Described underframe line slide rail mechanism comprises guide-track groove, roller bearing, left-side holder and right side wall holder and roller, described guide-track groove is separately positioned in the mold fixed platform in left side gusset mold and right side gusset mold outside, and vertical with right side gusset mold base cross members with left side gusset mold respectively, described roller bearing is arranged in mold fixed platform, and vertical with described guide-track groove, described roller one end is arranged on left-side holder or right side wall holder, and one end is placed in roller bearing and guide-track groove spacing.
2. a kind of passenger vehicle self-control body frame according to claim 1 closes tire tool, it is characterized in that, described end framework location seat is combined into by channel-section steel, and the ladder rack parallel with mold fixed platform, bottom at described ladder rack arranges support bar, at least four of described support bars, and vertical with mold fixed platform, its one end is connected with mold fixed platform, and the other end is connected with ladder rack.
3. a kind of passenger vehicle self-control body frame according to claim 1 closes tire tool, it is characterized in that, described locating piece is " L " shape locating piece, described " L " shape locating piece top is arranged on respectively the two ends of left side gusset mold and right side gusset mold top cross beam, the external part of described " L " shape locating piece is free state, and the width of described " L " shape locating piece is along horizontal depth of beam on left side gusset mold or right side gusset mold window; Described self-locking clip clamper and described locating piece side by side, and are equidistantly separately positioned on the crossbeam between left side gusset mold and gusset mold top, right side locating piece.
4. a kind of passenger vehicle self-control body frame according to claim 1 closes tire tool, it is characterized in that, described locating support is square pole, described square pole is arranged on positioning support stand, its one end is connected with positioning support stand, the other end is free state, and described locating support edge is 0 °~100 ° with positioning support stand junction rotation angle range, for fixing of rear wall frame.
5. a kind of passenger vehicle self-control body frame according to claim 1 closes tire tool, it is characterized in that, homonymy at described left-side holder and right side wall holder arranges respectively oblique band ladder, described oblique band ladder bottom is fixed on left-side holder and right side wall holder, its top respectively with on the window of left side gusset mold and right side gusset mold along being connected along crossbeam under crossbeam and window, in described oblique band ladder both sides, guardrail is installed.
6. a kind of passenger vehicle self-control body frame according to claim 1 closes tire tool, it is characterized in that, top, workshop directly over framework location mechanism at the bottom of described vehicle body arranges parietal bone frame handling apparatus, described parietal bone frame handling apparatus is by the steelframe that is provided with chute, the steel column of supporting steel frame, the suspension hook vertical with steel column, the handling vehicle body parietal bone frame dolly composition that is entrenched in the crane girder in steelframe chute and move left and right on steelframe, described steelframe is arranged on top, workshop, at described steelframe two ends, steel column is set, described steel column is provided with chute, the chute of described suspension hook and steel column is slidably matched, described steel column one end is connected with steelframe, the other end is fixed on workshop ground surface, described crane girder is connected with handling vehicle body parietal bone frame dolly.
7. a kind of passenger vehicle self-control body frame according to claim 1 closes tire tool, it is characterized in that, described gusset mold stay hook comprises hook limited block, gusset mold stay hook steel plate, be arranged on the stay hook of gusset mold stay hook steel plate bottom and by gusset mold stay hook steel plate and the fixing spring of stay hook, the hook of gusset mold stay hook steel plate is fixed in described spring one end, the other end is connected with the hook of stay hook, and described hook limited block is fixedly mounted in the mold fixed platform of gusset mold stay hook steel plate below.
CN201320869477.4U 2013-12-26 2013-12-26 Self-made car body skeleton assembling mold of passenger car Active CN203610897U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320869477.4U CN203610897U (en) 2013-12-26 2013-12-26 Self-made car body skeleton assembling mold of passenger car

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Application Number Priority Date Filing Date Title
CN201320869477.4U CN203610897U (en) 2013-12-26 2013-12-26 Self-made car body skeleton assembling mold of passenger car

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104439818A (en) * 2014-08-28 2015-03-25 安徽星马专用汽车有限公司 Positioning tool for frame of concrete mixer
CN114248059A (en) * 2022-03-02 2022-03-29 山东鸿瑞照明科技有限公司 Large-scale welding auxiliary device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104439818A (en) * 2014-08-28 2015-03-25 安徽星马专用汽车有限公司 Positioning tool for frame of concrete mixer
CN104439818B (en) * 2014-08-28 2016-04-06 安徽星马专用汽车有限公司 The vehicle frame positioning tool of concrete mixer truck
CN114248059A (en) * 2022-03-02 2022-03-29 山东鸿瑞照明科技有限公司 Large-scale welding auxiliary device
CN114248059B (en) * 2022-03-02 2022-05-24 山东鸿瑞照明科技有限公司 Large-scale welding auxiliary device

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