CN206936636U - Portal frame may be reversed - Google Patents

Abstract

It the utility model is related to white body processing, a kind of turnable portal frame is provided, including two supports and two swing arm units being oppositely arranged, there is the processing channel passed through for white body between two supports, it is rotatably connected between each swing arm unit and corresponding support, support is connected with actuator, and pivot center passes through direction parallel to white body, each swing arm unit includes two support bases, and the direction of two support bases of each swing arm unit along processing channel is oppositely arranged and all extended in processing channel.Two pack support of the present utility model is separately installed in specified location respectively with swing arm unit structure, it is more convenient, by rotary swinging arm component so that portal frame has open and close status, and then swing arm unit in white body transfer process is avoided to produce interference to it, the portal frame of other this structure, different vehicles can be directed to process, and when the size of transformation adjustment processing channel, only need to readjust both installation sites.

Description

Portal frame may be reversed

Technical field

It the utility model is related to a kind of white body processing, more particularly to a kind of turnable portal frame.

Background technology

In white body welding field, such as in white body main weldering line top cover laser welding station, using upset structure portal frame, It is compact-sized, account for that station space is small, and installation is convenient, bigger trajectory range is left to laser welding robot, is easy to work The optimization of position beat, and be easier to realize the passing through property of various.But make a general survey of existing white car body top cover laser welding work Position, portal frame is more using fixed steel frame construction form, and volume is big, and heavier-weight, processing is not easy, and installation adjustment is difficult, opens Mouth size can not transform implementation by the property later stage, be unfavorable for the extension of follow-up vehicle.

Utility model content

The purpose of this utility model is to provide a kind of upset portal frame, it is intended to for solving in existing white body processing Portal frame is using fixed steel frame construction, the problem of installation difficulty and poor adaptability.

What the utility model was realized in：

The utility model embodiment provides a kind of turnable portal frame, including two supports being oppositely arranged and with two One-to-one two swing arm units of support, there is the processing channel passed through for white body, often between two supports It is rotatably connected between one swing arm unit and the corresponding support, the support, which is connected with, drives the corresponding swing arm set The actuator that part rotates around pivot center, and the pivot center passes through direction, each pendulum parallel to the white body Arm component includes two support bases of the white car body top cover that is fixedly clamped, two support base edges of each swing arm unit The direction of the processing channel is oppositely arranged and all extended in the processing channel.

Further, in addition to it is respectively mounted solid with two one-to-one two bases of support, each support Due on the corresponding base, the processing channel is between two bases.

Further, the upper end of the base is provided with the installing plate for installing the corresponding support, the base Lower end is provided with the height-regulating mechanism for adjusting each installing plate height.

Further, the actuator is the tumble cylinder being vertically arranged, and described tumble cylinder one end is mounted on pair Answer on the base, the other end is rotatably connected with the corresponding swing arm unit, and the pivot center of the swing arm unit and institute The pivot center parallel interval for stating swing arm unit is set.

Further, each support base includes horizontally disposed support block, the pressure above the support block Tight block and the clamping cylinder of the control compact heap vertical direction movement, the support block and the clamping cylinder install in Have on the corresponding swing arm unit, and between the support block and the compact heap between stretching into for white car body top cover part Gap.

Further, the swing arm unit also include the framework that is rotatably connected with the corresponding support and with it is described Two linking arms of framework wherein one end connection, two support bases are installed in the corresponding linking arm away from the frame respectively The end position of frame, two linking arms are respectively arranged at both sides of the framework along the processing channel length direction, institute State the one end of framework away from two linking arms and be provided with rotating shaft, the rotating shaft is rotatably connected with the corresponding support.

Further, each support is respectively provided with two confined planes being oppositely arranged, and two confined planes are vertical Set and the rotating shaft pass through two confined planes, and the framework positioned at the correspondence support two confined planes it Between, be provided with the first X in the upper end of each confined planes has and two confined planes to limited block, the framework One-to-one side surface, there is gap, and each side surface between each side surface and the corresponding confined planes On be provided with and contacted when the support base is fixedly clamped white car body top cover with corresponding first X to the vertical plane of limited block The 2nd X to limited block.

Further, each support be provided with when the support base is fixedly clamped white car body top cover with corresponding institute At least one Y-direction limit base of the outer surface contact of framework is stated, the Y-direction limit base edge is prolonged perpendicular to the direction of the rotating shaft Stretch.

Further, it is installed on the framework when the support base is fixedly clamped white car body top cover parallel to the Y To limit base and support at least one first buffer of the support.

Further, at least one limiting plate is additionally provided with the support, the limiting plate, which has along away from described, to be added The inclined plane that work channel direction tilts down, corresponded and in the branch with each limiting plate in being provided with the framework Support seat supports at least one second buffer of the corresponding inclined plane when tilting out the processing channel.

The utility model has the advantages that：

In portal frame of the present utility model, using the structure shape being rotatably connected between support and corresponding swing arm unit Formula, when needing white body being transferred in processing channel, flipped to the outside using actuator control swing arm unit, i.e. portal frame Open, smoothly can enter so that each support base is overturn to the outside of processing channel, white body in processing channel, actuator control Swing arm unit is inverted, i.e., portal frame is closed, and each support base is recovered to original state, can be now fixedly clamped using each support base white Car body top cover, white body is processed with facilitating, and after machining, releases fixation of each support base to white car body top cover Connection, portal frame are again turned on, and white body can be smoothly moved out by processing channel, while other white body can enter processing channel Interior processing.Not over steel structure connection it is an entirety between the processing channel both sides of portal frame in the above-mentioned course of work, When mounted, two pack supports and swing arm unit structure are separately installed in specified location respectively, more convenient, and are put by rotating Arm component is so that portal frame has open and close status, and then it is dry to avoid in white body transfer process swing arm unit from producing it Relate to, in addition using the portal frame of this structure, there is stronger adaptability, different vehicles can be directed to and processed, and even in During the size of transformation adjustment processing channel, because the support and swing arm unit structure of both sides are separate, then it need to only readjust Both installation sites.

Brief description of the drawings

, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work Under, other accompanying drawings can also be obtained according to these accompanying drawings.

Fig. 1 is that the structure that the white body that the utility model embodiment provides is located in the processing channel that portal frame may be reversed is shown It is intended to；

Fig. 2 is the structural representation for the turnable portal frame that the utility model embodiment provides；

Fig. 3 is the structural representation of the base of Fig. 2 turnable portal frame；

Fig. 4 is the structural representation of the swing arm unit of Fig. 2 turnable portal frame；

Fig. 5 is enlarged drawing at Fig. 2 A；

Fig. 6 is the structural representation of the support of Fig. 2 turnable portal frame；

Fig. 7 is enlarged drawing at B in Fig. 2；

Fig. 8 is enlarged drawing at C in Fig. 2.

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made The all other embodiment obtained, belong to the scope of the utility model protection.

Referring to Fig. 1 and Fig. 2, the utility model embodiment provides a kind of turnable portal frame, including two be oppositely arranged Individual support 1 and installed in corresponding support with two supports, 1 one-to-one two swing arm unit 2, each swing arm unit 2 On 1, and there is the processing channel 3 passed through for white body 4 between two supports 1, i.e. the achievement unit in processing channel 3 of white body 4 Divide processing technology, specifically, be rotatably connected between swing arm unit 2 and corresponding support 1, usual support 1 is fixed, swing arm unit 2 can be rotated around support 1, and the pivot center of swing arm unit 2 is respectively connected with parallel to white body 4 by direction, each support 1 One actuator 5, by actuator 5 swing arm unit 2 can be driven to be rotated around pivot center, refine the structure of swing arm unit 2, include Be fixedly clamped two support bases 21 of the top cover of white body 4, the side of two support bases 21 of each swing arm unit 2 along processing channel 3 To being oppositely arranged and all extend in processing channel 3.In the utility model, portal frame has a processing channel 3, and white body 4 can be by The wherein Single port of processing channel 3 enters, and corresponding processing technology is carried out in processing channel 3, and white after machining Vehicle body 4 is removed by the another port of processing channel 3, i.e., portal frame is located at white body 4 and processed in producing line, is processed as white body 4 A part for technique, white body 4 can voluntarily pass through processing channel 3, and in the present embodiment, portal frame includes two-part structure, And two-part structure is located at the both sides of processing channel 3 respectively, each section structure includes support 1 and swing arm unit 2, leads to Part 5 of overdriving controls the rotation of swing arm unit 2, and then causes portal frame to have two states, such as the support base of swing arm unit 2 21 are respectively positioned on the side of processing channel 3, can be realized by support base 21 and the top cover of white body 4 in processing channel 3 is fixedly clamped, Now portal frame is closed mode, and when swing arm unit 2 rotates laterally, the support base 21 of swing arm unit 2 is respectively positioned on processing and led to The outside in road 3, white body 4 can be moved to another port by the wherein Single port of processing channel 3, and now portal frame is open shape State, specifically in the course of the work, when white body 4 needs to enter in processing channel 3, portal frame is in open mode, and white body 4 enters Enter the working position of processing channel 3, it is closed mode then to control two swing arm units 2 to overturn to portal frame by two actuators 5, Can be now fixedly clamped the top cover of white body 4 using each support base 21, and each processing component of corresponding gantry rack position enters to white body 4 The corresponding processing technology of row, and after the completion of technique, each support base 21 releases the clamping connection to the top cover of white body 4, can be by driving Moving part 5 controls swing arm unit 2 to rotate again, and portal frame is opened, and the white body 4 can be moved to next station by processing channel 3, Another white body 4 can enter in processing channel 3 and be processed accordingly simultaneously.In the above-mentioned course of work, the processing of portal frame Not over steel structure connection it is an entirety between the two-part structure of the both sides of passage 3, when mounted, two-part structure difference It is separately installed in specified location, it is more convenient, and by rotary swinging arm component 2 so that portal frame, which has, opens and close shape State, and then avoid swing arm unit 2 in the transfer process of white body 4 from producing interference to it, in addition using the portal frame of this structure, tool There is stronger adaptability, different vehicles can be directed to and processed, and when the size of transformation adjustment processing channel 3, due to The support 1 of both sides and the structure of swing arm unit 2 are separate, then need to only readjust both installation sites.

Referring to Fig. 1 and Fig. 3, optimize above-described embodiment, portal frame also includes and two supports, 1 one-to-one two bottom Seat 6, each support 1, which is respectively mounted, to be fixed on corresponding base 6, and for processing channel 3 between two bases 6, base 6 is gantry The critical piece such as the installation base station of frame, support 1, swing arm unit 2 and actuator 5 is installed on corresponding base 6, and base 6 itself are then installed on ground.The structure of base 6 is refined, the upper end of base 6 is provided with the installation for installing corresponding support 1 Plate 61, and the lower end of base 6 is then provided with the height-regulating mechanism 62 fixed for adjusting each installing plate 61.Specifically, each base 6 Upper end is provided with polylith installing plate 61, and the upper surface of each installing plate 61 is respectively positioned in same plane, to ensure the peace of support 1 Dress face is horizontal, and some measuring basis holes are generally additionally provided with the upper surface of installing plate 61, is adjusted for the measurement after integrated installation It is whole.And height-regulating mechanism 62 then includes some adjusting screw rods 621, some connecting plates 622 are provided with the underface of base 6, are respectively connected Fishplate bar 622 is connected with the correspondence position of base 6 using the screw rod 621 being vertically arranged, and the position due to connecting plate 622 is determined Position, then during rotary screw 621, base 6 is overall vertically to be moved, and then plays the height of adjustment installing plate 61 Effect, and the height of installing plate 61 then determines according to the model of white body 4, to ensure under portal frame closed mode, each There is suitable position relationship between support seat 21 and white body 4.

Referring to Fig. 2 and Fig. 4, continue to optimize above-described embodiment, actuator 5 is tumble cylinder 51, and the tumble cylinder 51 is perpendicular It is straight to set, and one end of tumble cylinder 51 is mounted on corresponding base 6, the other end can turn with corresponding swing arm unit 2 Dynamic connection, specifically, the cylinder part of tumble cylinder 51 is mounted on base 6, and pusher section can turn with swing arm unit 2 Dynamic connection, and the pivot center parallel interval of the pivot center between swing arm unit 2 and tumble cylinder 51 and swing arm unit 2 is set Put.In the present embodiment, two pivot center parallel intervals are set, then show that tumble cylinder 51 is inclined to the application point of swing arm unit 2 From the pivot center of swing arm unit 2, then when tumble cylinder 51 drives the application point vertical direction movement of swing arm unit 2, swing arm Component 2 rotates around the pivot center of itself, and then opens or close the purpose of portal frame.

Referring to Fig. 1 and Fig. 5, the structure of support base 21 is refined, it includes support block 211, compact heap 212 and clamps gas Cylinder 213, support block 211 is horizontally disposed, and compact heap 212 is then positioned at the surface of corresponding support block 211, and have supply between the two The gap that the header field of white body 4 stretches into, and clamping cylinder 213 can then control compact heap 212 vertically to move, and then The gap length between regulation support block 211 and compact heap 212 is played, support block 211 is installed in corresponding with clamping cylinder 213 On swing arm unit 2.In the present embodiment, the clamping structure of support base 21 has been refined, compact heap 212 is controlled by clamping cylinder 213 The top cover of white body 4 is fixedly clamped with realizing along vertical shift.It is defined, then can passes through for the height of support block 211 The mode for setting up pad improves the bearing height of support block 211, so that the bearing height of support block 211 can be with different automobile types White body 4 is highly corresponding.Spacing hole can be generally additionally provided with the centre position of support block 211, and pad can then use tool The structure of limited location post, when pad is layed in support block 211, the limited post of pad stretches into the spacing hole of support block 211 It is interior, it can effectively avoid when clamping 4 top cover of white body, relative slide is produced between pad and support block 211.

Referring again to Fig. 2 and Fig. 4, further, each swing arm unit 2 also includes framework 22 and two linking arms 23, framework 22 is the agent structure of swing arm unit 2, is rotatably connected between framework 22 and corresponding support 1, and two linking arms 23 be bending structure, and when portal frame is closed, two linking arms 23 are all extended in processing channel 3, and two linking arms 23 Both sides of the framework 22 along the length direction of processing channel 3 are respectively arranged at, can also be adopted between certain two linking arms 23 and framework 22 It is made of integrally formed mode, two support bases 21 of each swing arm unit 2 are installed in corresponding linking arm 23 away from frame respectively The end position of frame 22, and the one end of framework 22 away from linking arm 23 is provided with rotating shaft 24, the rotating shaft 24 is grown along processing channel 3 Degree direction sets and is rotatably connected between corresponding support 1.In the present embodiment, the knot of swing arm unit 2 has further been refined Structure, also it is an entirety between rotating shaft 24 and framework 22, two ends of rotating shaft 24 are respectively protruding into two connecting holes of support 1 It is interior, and connected using axle sleeve, then rotating shaft 24 can rotate relative to connecting hole around own axes, and still further aspect, linking arm 23 uses The structure type of extension is bent, during can avoiding upset, it produces interference between support 1.

Referring to Fig. 1, Fig. 4 and Fig. 7, optimize above-described embodiment, each support 1 is respectively provided with two confined planes being oppositely arranged 111, two confined planes 111 are vertically arranged, and above-mentioned two connecting holes are just opened on the two confined planes 111 respectively, i.e., Rotating shaft 24 passes through the two confined planes 111, and the framework 22 of swing arm unit 2 is then located between two confined planes 111, in each limit The upper end of plane 111 is provided with the first X to limited block 112, and X is to identical with the length direction of rotating shaft 24 herein, due to frame Frame 22 is between two confined planes 111, then framework 22 has and two 111 one-to-one side surfaces of confined planes, every side There is gap between surface and corresponding confined planes 111, the first X is located in corresponding gap to limited block 112, and per side table The 2nd X is then provided with face to limited block 221, and when portal frame is closed, i.e., is fixedly clamped the top cover of white body 4 in support base 21 When, the 2nd X contacts to limited block 221 with corresponding first X to limited block 112, and contact site is vertical state.The present embodiment In, framework 22 has gap between two confined planes 111 between confined planes 111 and the corresponding side surface of framework 22, then During rotation, there will not be larger contact area between confined planes 111 and framework 22, can not only avoid being turned over Abrasion is produced in journey between the two, and ensures the flexibility that swing arm unit 2 is overturn.And on the other hand, when portal frame is closed When, the first X abuts to limited block 112 with corresponding 2nd X to limited block 221, then can avoid the process processed in white body 4 In, swing arm unit 2 can produce X to movement, ensure uniqueness of the working condition lower swing arm component 2X to position.Generally spacing Pin-and-hole is also offered on side surface corresponding to face 111 and framework 22, when portal frame is closed, confined planes 111 It is located along the same line with two pin-and-holes on 22 corresponding side surface of framework, each pin-and-hole is mainly used for interspersed bearing pin 113, When portal frame needs to safeguard, interspersed two pin-and-holes being located along the same line of bearing pin 113 can be used, then swing arm unit 2 and branch Frame 1 is locked by bearing pin 113, and now tumble cylinder 51 can not work.

Referring to Fig. 1 and Fig. 7, further, each support 1 is provided with least one Y-direction limit base 114, and Y-direction is spacing Seat 114 extends along perpendicular to the direction of rotating shaft 24, and when portal frame is closed, i.e., is pushed up in the white body 4 that is fixedly clamped of support base 21 Gai Shi, Y-direction limit base 114 contact with the outer surface of framework 22.In the present embodiment, support 1 includes two L-type plates 11, two L-types Plate 11 is vertically arranged, and horizontal cross-section is in L-shaped, is connected between two L-type plates 11 by two horizontal-extending connecting rods 12 An entirety is connected in, two L-type plates 11 are oppositely arranged, and above-mentioned two confined planes 111 are located on two L-type plates 11 respectively, and Y Then it is arranged to limit base 114 on vertical plane 115 vertical with confined planes 111 on L-type plate 11, it is spacing that vertical plane 115 is located at Y-direction Between seat 114 and processing channel 3, and Y-direction limit base 114 is located at the top of rotating shaft 24, to this by the swing arm unit 2 of open mode To the side to overturn of processing channel 3 one so that during portal frame is closed, framework 22 moves closer to Y-direction limit base 114, and when support When the support block 211 of seat 21 is in horizontality, Y-direction limit base 114 contacts with framework 22, and then can limit swing arm unit 2 Continue to overturn, thereby may be ensured that under closed mode, the vertical height of swing arm unit 2 and the uniqueness of Y-direction position.Certainly for upper Structure is stated, because with two L-type plates 11, then Y-direction limit base 114 is generally also two, and one is provided with each L-type plate 11 Individual Y-direction limit base 114, and length direction of two Y-direction limit bases 114 along rotating shaft 24 is arranged at intervals, it is ensured that swing arm unit 2 Two Y-direction limit bases 114 can be steadily spacing in switching process.

Referring to Fig. 2 and Fig. 7, optimization Y-direction is spacing, is installed at least one first buffer 222 on framework 22, and first Buffer 222 passes through framework 22, and when portal frame is closed, the first buffer 222 is in horizontality, and first is slow Rushing device 222 at least has part-structure between framework 22 and support 1 and supports the corresponding position of support 1, the first buffer 222 one end are installation end, and the other end is buffering end, and installation end is installed on framework 22, and buffering end has pooling feature, in dragon When door frame is closed, L-type is supported in the buffering end of the first buffer 222 between framework 22 and L-type plate 11 and along Y-direction Plate 11.In the present embodiment, the number of the first buffer 222 is identical with the number of Y-direction limit base 114, and both form one-to-one corresponding Relation, and when portal frame is closed, the first buffer 222 Y-direction limit base 114 corresponding to, and in portal frame During being overturn from open mode to closed mode, the first vertical plane 115 with L-type plate 11 in buffering end of the first buffer 222 Contact, but swing arm unit 2 continues upset and contacted to Y-direction limit base 114 with framework 22, and in this process, the first buffer 222 can play preferable cushioning effect, can avoid forming larger collision impact between Y-direction limit base 114 and framework 22.

Referring to Fig. 2 and Fig. 8, further, at least one limiting plate 13 is additionally provided with support 1, limiting plate 13 has Inclined plane 131, the inclined plane 131 tilts down along the direction away from processing channel 3, and is provided with framework 22 and limiting plate 13 One-to-one at least one second buffer 223 of inclined plane 131, and when support base 21 tilts out processing channel 3, i.e. dragon When door frame is opened, the second buffer 223 supports corresponding inclined plane 131.In the present embodiment, limiting plate 13 is two, respectively position In on two L-type plates 11, accordingly, the second buffer 223 is also two, and is respectively positioned on close to the position of rotating shaft 24, due to inclining Inclined-plane 131 tilts down along the direction away from processing channel 3, then during portal frame is by opening to closing, the second buffering The buffering end of device 223 is gradually distance from inclined plane 131, i.e., inclined plane 131 without limitation on swing arm unit 2 upset, and in portal frame By closing to during opening, the buffering end of the second buffer 223 moves closer to inclined plane 131 until both support contact, , can for limiting the flip angle of portal frame open mode lower swing arm component 2, and by the cushioning effect of the second buffer 223 Caused collision during being supported with reduction.

Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc., the utility model should be included in Protection domain within.

Claims (10)

1. a kind of turnable portal frame, including two supports being oppositely arranged and with two one-to-one two of supports Swing arm unit, there is the processing channel passed through for white body between two supports, it is characterised in that：Each swing arm set It is rotatably connected between part and the corresponding support, the support, which is connected with, drives the corresponding swing arm unit around pivot center The actuator of rotation, and the pivot center is included parallel to the white body by direction, each swing arm unit Be fixedly clamped two support bases of white car body top cover, and two support bases of each swing arm unit are along the processing channel Direction be oppositely arranged and all extend in the processing channel.

2. turnable portal frame as claimed in claim 1, it is characterised in that：Also include one-to-one with two supports Two bases, each support, which is respectively mounted, to be fixed on the corresponding base, and the processing channel is located at two bases Between.

3. turnable portal frame as claimed in claim 2, it is characterised in that：The upper end of the base is provided with for installation pair The installing plate of the support is answered, the lower end of the base is provided with the height-regulating mechanism for adjusting each installing plate height.

4. turnable portal frame as claimed in claim 2, it is characterised in that：The actuator is the upset gas being vertically arranged Cylinder, described tumble cylinder one end are mounted on the corresponding base, and the other end rotatably connects with the corresponding swing arm unit Connect, and the pivot center parallel interval of the pivot center of the swing arm unit and the swing arm unit is set.

5. turnable portal frame as claimed in claim 1, it is characterised in that：Each support base includes horizontally disposed The clamping cylinder of support block, the compact heap above the support block and the control compact heap vertical direction movement, institute Support block and the clamping cylinder is stated to install on the corresponding swing arm unit, and between the support block and the compact heap With the gap stretched into for white car body top cover part.

6. turnable portal frame as claimed in claim 1, it is characterised in that：The swing arm unit also includes and the corresponding branch Framework that frame is rotatably connected and two linking arms being connected with the framework wherein one end, two support bases difference Install and be respectively arranged at the framework edge in the corresponding end position of the linking arm away from the framework, two linking arms The both sides of the processing channel length direction, the one end of the framework away from two linking arms are provided with rotating shaft, described turn Axle is rotatably connected with the corresponding support.

7. turnable portal frame as claimed in claim 6, it is characterised in that：Each support is respectively provided with two be oppositely arranged Individual confined planes, two confined planes are vertically arranged and the rotating shaft passes through two confined planes, and the framework is located at Between two confined planes of the corresponding support, the first X is provided with to spacing in the upper end of each confined planes Block, the framework have with two one-to-one side surfaces of confined planes, each side surface with it is corresponding described spacing There is gap between face, and be provided with each side surface when the support base is fixedly clamped white car body top cover with it is right The 2nd X that the first X is contacted to the vertical plane of limited block is answered to limited block.

8. turnable portal frame as claimed in claim 6, it is characterised in that：Each support is provided with when the support Seat be fixedly clamped white car body top cover when at least one Y-direction limit base for being contacted with the outer surface of the corresponding framework, the Y-direction limits Position seat extends along perpendicular to the direction of the rotating shaft.

9. turnable portal frame as claimed in claim 8, it is characterised in that：It is installed on the framework when the support base presss from both sides Parallel to the Y-direction limit base and at least one first buffer of the support is supported when fastening white car body top cover.

10. turnable portal frame as claimed in claim 6, it is characterised in that：At least one limit is additionally provided with the support Position plate, the limiting plate have along the inclined plane tilted down away from the processing channel direction, are provided with the framework Corresponded with each limiting plate and the corresponding inclined plane is supported when the support base tilts out the processing channel At least one second buffer.