CN217647775U

CN217647775U - Multi-vehicle type door centering device

Info

Publication number: CN217647775U
Application number: CN202221783190.5U
Authority: CN
Inventors: 任玉峰; 王茂兵; 汤东华
Original assignee: Anhui Juyi Technology Co Ltd
Current assignee: Anhui Juyi Technology Co Ltd
Priority date: 2022-07-08
Filing date: 2022-07-08
Publication date: 2022-10-25
Anticipated expiration: 2032-07-08

Abstract

The utility model discloses a multi-vehicle type vehicle door centering device, which comprises a base, wherein the base is provided with a jacking mechanism, a supporting mechanism, a positioning mechanism, a hinge correcting mechanism and a guiding mechanism, and the jacking mechanism comprises a lifting framework capable of lifting; the supporting mechanism comprises at least two supporting units, each supporting unit comprises a supporting frame capable of being turned over, and supporting blocks are arranged on the supporting frames; the positioning mechanism comprises at least two positioning units, each positioning unit comprises a positioning frame which can slide in the left-right direction, the front-back direction and the vertical direction respectively, and positioning pins are arranged on the positioning frames; the hinge correction mechanism comprises two hinge correction units, and each hinge correction unit comprises a correction frame, a fixed correction block and a movable correction block; the guide mechanism includes a plurality of guide units that guide vertical movement of the vehicle door. The utility model discloses compare prior art's advantage: the centering and correcting function of the vehicle door during automatic installation of the vehicle door is realized.

Description

Multi-vehicle-type vehicle door centering device

Technical Field

The utility model belongs to the technical field of car welding tool technique and specifically relates to a multi-vehicle type door centering device is related to.

Background

In the automatic installation process of the vehicle door in the field of vehicle welding, the vehicle door is assembled and then is off-line and placed on a transfer table for standby, and when the vehicle door is automatically installed, the robot takes the vehicle door away from the transfer table and installs the vehicle door on a vehicle body. The existing transfer platform generally only comprises a supporting mechanism and a guiding mechanism located around the supporting mechanism, an operator manually places a vehicle door on the supporting mechanism of the transfer platform, and the vehicle door is guided by the guiding mechanism in the placing process. The transfer platform with the structure has the following defects:

1. when multiple vehicle types are switched, the sharing performance of the transfer platform is reduced, and particularly, the transfer platform cannot be shared under the condition that the model difference of the vehicle types is large;

2. when the vehicle door is placed on the transfer platform, the horizontal plane of the vehicle door cannot be accurately positioned;

3. the hinge state on the vehicle door can not be corrected, if the hinge turnover angle on the vehicle door is large, the situation that the hinge collides with the vehicle body or even can not be installed easily occurs when the vehicle door is buckled to the vehicle body in the subsequent automatic vehicle door installation process.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's is not enough, provides a multi-vehicle type door centering device to door centering when realizing door automatic installation corrects the function.

The utility model discloses a realize through following technical scheme:

a multi-vehicle-type vehicle door centering device comprises a base, wherein a jacking mechanism, a supporting mechanism, a positioning mechanism, a hinge correcting mechanism and a guiding mechanism are arranged on the base,

the jacking mechanism is used for jacking the vehicle door and driving the vehicle door to vertically move; the guide mechanism is used for guiding the vertical movement of the vehicle door; the positioning mechanism is used for positioning the vehicle door; the supporting mechanism is used for supporting the vehicle door which moves in place;

the hinge correction mechanism comprises two hinge correction units, the two hinge correction units correspond to two hinges on a vehicle door respectively, each hinge correction unit comprises a correction frame, a fixed correction block and a movable correction block, the correction frame is slidably mounted on the base, the fixed correction block is fixedly mounted on the correction frame, the movable correction block is movably mounted on the correction frame and can be turned over relative to the correction frame, the hinge correction units are opened or closed through turning of the movable correction block, and the movable correction block and the fixed correction block are clamped on the upper side and the lower side of a hinge plate of the hinge of the vehicle door respectively in a closed state.

As a preferred scheme of the centering device, the jacking mechanism comprises a lifting frame capable of lifting, a plurality of jacking blocks are arranged on the lifting frame, and the center of gravity of the vehicle door is jacked up through the plurality of jacking blocks;

the supporting mechanism comprises at least one supporting unit, the positioning mechanism comprises at least two positioning units, and each supporting unit and each positioning unit are all arranged on the periphery of the jacking mechanism;

the supporting unit comprises a support frame capable of being turned over, a supporting block is arranged on the support frame, and the vehicle door is supported through the supporting block;

the positioning unit comprises positioning frames which can slide in the left-right direction, the front-back direction and the vertical direction respectively, positioning pins are arranged on the positioning frames, and the positioning pins are matched with the positioning holes of the vehicle door to position the vehicle door;

the guide mechanism comprises a plurality of guide units, the guide units are distributed on the periphery of the base in the circumferential direction, and the inner sides of the guide blocks of the guide units are in contact with the edge of the vehicle door so as to guide the vertical movement of the vehicle door.

As a preferable scheme of the above centering device, the centering device further comprises a detection unit, the detection unit comprises a plurality of position sensors, and at least one of the support unit and the positioning unit is respectively provided with a position sensor; and each hinge correction unit is provided with a position sensor, and the position sensors in the hinge correction units are arranged on the correction frame and positioned on one side of the fixed correction block.

As a preferable scheme of the above centering device, a positioning support column is arranged at the bottom of the positioning pin, the diameter of the top surface of the positioning support column is larger than that of the bottom of the positioning pin, and a positioning support surface is formed on the top surface of the positioning support column at the periphery of the positioning pin.

As a preferred scheme of the centering device, the positioning unit further includes three sets of modules, the three sets of modules are respectively a first module, a second module and a third module, the first module is installed on the base, a first slider of the first module can slide left and right under the driving of the first module, the second module is installed on the first slider of the first module through a first adapter plate, a second slider of the second module can slide back and forth under the driving of the second module, the third module is installed on the second slider of the second module through a second adapter plate, a third slider of the third module can slide vertically under the driving of the third module, and a positioning frame of the positioning unit is installed on the third slider.

As a preferred embodiment of the above centering device, a first auxiliary support structure is disposed on the base on one side of the first module, the first adapter plate is slidably supported by the first auxiliary support structure, a second auxiliary support structure is disposed on the first adapter plate on one side of the second module, and the second adapter plate is slidably supported by the second auxiliary support structure.

As a preferred scheme of the above centering device, the supporting unit further includes a supporting base and a supporting swing arm cylinder, the supporting base is fixedly mounted on the base, a cylinder body of the supporting swing arm cylinder is mounted on the supporting base, and the supporting frame is fixedly mounted on a swing arm of the supporting swing arm cylinder.

As a preferred embodiment of the centering device, in the hinge correction unit, the correction frame is slidably mounted on the base through a fourth module, the fourth module is mounted on the base, a fourth slider of the fourth module can slide in the horizontal direction under the driving of the fourth module, the sliding direction of the fourth slider is parallel to the axis direction of the hinge shaft of the hinge on the vehicle door, and the bottom of the correction frame is fixedly mounted on the fourth slider of the fourth module.

As the preferable scheme of the centering device, the hinge correction unit further comprises a correction swing arm cylinder, a cylinder body of the correction swing arm cylinder is installed on the correction frame, and the movable correction block is fixedly installed on a swing arm of the correction swing arm cylinder.

As the preferred scheme of the centering device, a plurality of supporting legs are arranged at the bottom of the base, the bottoms of the supporting legs are connected with a supporting bottom plate through connecting plates, the supporting bottom plate is fixedly supported on the ground, a vertical leveling bolt is connected to the supporting legs in a threaded manner, a supporting groove matched with the bottom of the leveling bolt in shape is formed in the top surface of the supporting bottom plate, a threaded hole is formed in the supporting bottom plate and located below the supporting groove, a guide bolt is connected to the threaded hole of the supporting bottom plate in a threaded manner, the bottom of the leveling bolt abuts against the supporting groove of the supporting bottom plate, the leveling bolt is a hollow bolt, and a center hole of an adjusting bolt is sleeved outside the guide bolt.

Compared with the prior art, the utility model has the following advantages:

1. the utility model provides a pair of multi-vehicle type door centering device, catch the door in advance through climbing mechanism, drive the door by climbing mechanism and descend until the door contacts with positioning mechanism and supporting mechanism, in the course that climbing mechanism drives the door and descends, guide the vertical movement of door by a plurality of guide units of guiding mechanism, has guaranteed stationarity and precision in putting the piece in-process, has avoided putting the piece in-process door to be scratched or warp; the positioning pin of the positioning mechanism is matched with the positioning hole of the vehicle door to realize accurate positioning of the vehicle door, and the vehicle door with the placed part in place is stably supported by the supporting mechanism; after the automobile door is placed in place, the hinge state is effectively corrected by the hinge correction mechanism, and the smoothness in the subsequent automobile door installation process is guaranteed.

2. The utility model provides a pair of multi-vehicle type door centering device, the displacement adjustment can be realized to this three direction of direction, fore-and-aft direction and vertical direction about its positioning unit's locating pin, has guaranteed the flexibility and the accurate nature in location of multi-vehicle type sharing.

3. The utility model provides a pair of multi-vehicle type door centering device, it has still set up detecting element, it is whether to descend to the position through position sensor on supporting element and the positioning unit, after the door descends to the position, thereby correct the flap gesture of tight door hinge of unit clamp through the hinge correction to whether the flap of hinge on detecting the door through position sensor on the hinge correction unit is rotatory to target in place, and then has guaranteed the accuracy of the hinge state on door self state and the door.

4. The utility model provides a pair of multi-vehicle type door centering device, the correction frame of its hinge correction unit can the horizontal slip to can adjust the interval of two hinge correction units, and then can satisfy the demand that two hinge intervals change on the door of different motorcycle types.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a perspective view of the base of the present invention.

Fig. 3 is a sectional view of the supporting leg of the base of the present invention connected to the supporting base plate.

Fig. 4 is a perspective view of the jacking mechanism of the present invention.

Fig. 5 is a perspective view of the supporting unit of the present invention.

Fig. 6 is a perspective view of the positioning unit of the present invention.

Fig. 7 is a three-dimensional exploded view of the positioning unit of the present invention.

Fig. 8 is a perspective view of the hinge straightening unit of the present invention.

Fig. 9 is a perspective view of the hinge straightening unit and the door hinge of the present invention.

Fig. 10 is a perspective view of the guide unit of the present invention.

Fig. 11 is a perspective view of the door in the raised position during operation of the present invention.

Fig. 12 is a perspective view of the vehicle door at the jacking low position during the operation of the present invention.

Reference numbers in the figures:

1, a base, 11 support legs, 12 connecting plates, 13 support bottom plates, 14 leveling bolts and 15 threaded holes;

2, a jacking mechanism, 21 jacking bases, 22 jacking cylinders, 23 jacking frames and 24 jacking blocks;

3, a support mechanism, 31, a support frame, 32, a support block, 33, a support base, 34, a swing arm cylinder and 35, wherein the support mechanism is used for supporting a position sensor;

4, a positioning mechanism, 41, a positioning frame, 42, 43, 44, a positioning support surface, 45, a first module, 46, a second module, 47, a third module, 48, a first slide block, 49, a first adapter plate, 410, a second slide block, 411, a second adapter plate, 412, a third slide block, 413, 414, a support slide block and 415, a positioning position sensor;

5, a hinge correcting mechanism, a 51 correcting swing arm air cylinder, a 52 correcting frame, a 53 fixed correcting block, a 54 movable correcting block, a 55 fourth module, a 56 fourth sliding block and a 57 correcting position sensor;

6, a guide mechanism, 61 a guide frame, 62 a guide block, 63 a guide surface, 64 a guide swing arm cylinder and 65 a guide base;

7 door, 71 hinge, 72 hinge axis, 73 hinge plate.

Detailed Description

The embodiments of the present invention will be described in detail below, and this embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.

Referring to fig. 1 to 12, the embodiment discloses a multi-vehicle type vehicle door centering device, which includes a base 1, and the base 1 is provided with a jacking mechanism 2, a supporting mechanism 3, a positioning mechanism 4, a hinge straightening mechanism 5 and a guiding mechanism 6.

The bottom of the base 1 is provided with a plurality of supporting legs 11, the bottoms of the supporting legs 11 are connected with a supporting base plate 13 through connecting plates 12, the connecting plates 12 are L-shaped plates, the supporting base plate 13 is fixedly supported on the ground, the supporting legs 11 are in threaded connection with a vertical leveling bolt 14, a supporting groove matched with the bottom shape of the leveling bolt 14 is formed in the top surface of the supporting base plate 13, a threaded hole 15 is formed in the supporting base plate 13 and located below the supporting groove, a guide bolt is in threaded connection with the threaded hole 15 of the supporting base plate 13, the bottom of the leveling bolt 14 abuts against the supporting groove of the supporting base plate 13, the leveling bolt 14 is a hollow bolt, a center hole of the adjusting bolt is sleeved outside the guide bolt, and the guide bolt can vertically guide the adjusting bolt. During the installation, earlier support plate 13 passes through the screw fixation subaerial, rotates the adjusting bolt on each supporting leg 11 to adjustment base 1's level, when treating base 1 levelness and satisfying the requirement, connecting plate 12 through L shape again welds with supporting leg 11 and support plate 13 respectively mutually, thereby realizes supporting leg 11 and support plate 13's fixed connection, has guaranteed the levelness of base 1 installation.

The jacking mechanism 2 is used for jacking the vehicle door 7 and driving the vehicle door 7 to vertically move; the guide mechanism 6 is used for guiding the vertical movement of the vehicle door 7; the positioning mechanism 4 is used for positioning the vehicle door 7; the support mechanism 3 is used to support the door 7 that is moved into position.

Climbing mechanism 2 includes jacking base 21, jacking cylinder 22, the jacking frame 23 that can go up and down, jacking base 21 fixed mounting is on base 1, jacking cylinder 22's cylinder body is installed on jacking base 21, jacking cylinder 22's the vertical upwards extension of cylinder guide arm, jacking frame 23 is installed on jacking cylinder 22's cylinder guide arm top, be provided with a plurality of jacking pieces 24 on the jacking frame 23, through the focus of a plurality of jacking pieces 24 jack-up door 7. In this embodiment, the four jacking blocks 24 are arranged on the jacking frame 23, and the four jacking blocks 24 surround the center of gravity of the vehicle door 7 during operation.

The supporting mechanism 3 comprises at least one supporting unit, the positioning mechanism 4 comprises at least two positioning units, and each supporting unit and each positioning unit are arranged on the periphery of the jacking mechanism 2.

The supporting unit comprises a support frame 31 capable of being turned over, a supporting block 32 is arranged on the support frame 31, and the vehicle door 7 is supported through the supporting block 32. The supporting unit further comprises a supporting base 33 and a supporting swing arm cylinder 34, the supporting base 33 is fixedly installed on the base 1, a cylinder body of the supporting swing arm cylinder 34 is installed on the supporting base 33, the supporting frame 31 is fixedly installed on a swing arm of the supporting swing arm cylinder 34, the swing arm of the supporting swing arm cylinder is driven to turn over up and down through the supporting swing arm cylinder 34, and therefore the supporting frame 31 and the supporting block 32 on the supporting frame are driven to turn over up and down together to achieve closing or opening of the supporting unit. Different supporting units can be selectively opened or closed, so that the supporting requirements of different vehicle types can be met in a switching manner.

The positioning unit comprises a positioning frame 41 which can slide in the left-right direction, the front-back direction and the vertical direction respectively, a positioning pin 42 is arranged on the positioning frame 41, and the positioning of the vehicle door 7 is realized through the matching of the positioning pin 42 and a positioning hole of the vehicle door 7. The bottom of the positioning pin 42 is provided with a positioning support column 43, the diameter of the top surface of the positioning support column 43 is larger than that of the bottom of the positioning pin 42, the top surface of the positioning support column 43 is positioned at the periphery of the positioning pin 42 to form a positioning support surface 44, the vehicle door 7 is supported through the positioning support surface 44, and therefore the vehicle door 7 can be positioned and supported through the positioning pin 42. Three-point support of the vehicle door 7 can be formed by providing a support unit and two positioning units as a combination.

The positioning unit further comprises three groups of modules, the three groups of modules are respectively a first module 45, a second module 46 and a third module 47, the first module 45 is installed on the base 1, a first sliding block 48 of the first module 45 can slide left and right under the driving of the first module 45, the second module 46 is installed on the first sliding block 48 of the first module 45 through a first adapter plate 49, a second sliding block 410 of the second module 46 can slide front and back under the driving of the second module 46, the third module 47 is installed on the second sliding block 410 of the second module 46 through a second adapter plate 411, a third sliding block 412 of the third module 47 can slide vertically under the driving of the third module 47, and a positioning frame 41 of the positioning unit is installed on the third sliding block 412. The base 1 is provided with a first auxiliary supporting structure on one side of the first module 45, the first adapter plate 49 is supported in a sliding mode through the first auxiliary supporting structure, the first adapter plate 49 is provided with a second auxiliary supporting structure on one side of the second module 46, and the second adapter plate 411 is supported in a sliding mode through the second auxiliary supporting structure. Each auxiliary supporting structure comprises a supporting guide rail 413 and a supporting slide block 414 which are in sliding fit with each other, the two adapter plates are respectively supported in a sliding mode through the two supporting slide blocks 414, and two groups of auxiliary supporting mechanisms 3 are arranged to respectively support the two adapter plates in an auxiliary mode, so that unbalance loading can be prevented.

Move about through first module 45 drive locating rack 41 and the locating pin 42 on it, drive locating rack 41 and the locating pin 42 back-and-forth movement on it through second module 46, drive locating rack 41 and the locating pin 42 vertical movement on it through third module 47 to the realization is adjusted locating rack 41 and the position of locating pin 42 on it in left and right directions, fore-and-aft direction and the three orientation of vertical direction, in order to adapt to the door 7 location demand of different motorcycle types.

The hinge correction mechanism 5 comprises two hinge correction units, the two hinge correction units correspond to two hinges 71 on the vehicle door 7 respectively, each hinge correction unit comprises a correction swing arm cylinder 51, a correction frame 52, a fixed correction block 53 and a movable correction block 54, the correction frame 52 is slidably mounted on the base 1, the fixed correction block 53 is fixedly mounted on the correction frame 52, the movable correction block 54 is movably mounted on the correction frame 52 and can be turned over relative to the correction frame 52, a cylinder body of the correction swing arm cylinder 51 is mounted on the correction frame 52, and the movable correction block 54 is fixedly mounted on a swing arm of the correction swing arm cylinder 51. The movable correcting block 54 is turned over to open or close the hinge correcting unit, and in the closed state, the movable correcting block 54 and the fixed correcting block 53 are respectively clamped at the upper and lower sides of a hinge plate 73 of a hinge 71 of the vehicle door 7.

In the hinge correcting unit, the correcting frame 52 is slidably mounted on the base 1 through the fourth module 55, the fourth module 55 is mounted on the base 1, the fourth slider 56 of the fourth module 55 can slide along the horizontal direction under the driving of the fourth module 55, the sliding direction of the fourth slider 56 is parallel to the axial direction of the hinge shaft 72 of the hinge 71 on the vehicle door 7, and the bottom of the correcting frame 52 is fixedly mounted on the fourth slider 56 of the fourth module 55. Under the drive of fourth module 55, the alignment rack 52 of hinge correction unit can the horizontal slip to can adjust two hinge correction unit's interval, and then can satisfy the demand that two hinges 71 interval change on the door 7 of different motorcycle types.

Guiding mechanism 6 includes a plurality of guiding units, a plurality of guiding units distribute in the circumference periphery of base 1, every guiding unit includes leading truck 61 that can overturn, leading truck 61 drives the upset through direction swing arm cylinder 64, direction swing arm cylinder 64 is installed on base 1 through direction base 65, be equipped with guide block 62 on the leading truck 61, under the guiding unit closure state, the inboard spigot surface 63 of guide block 62 is along vertical extension, thereby the inboard spigot surface 63 of guide block 62 through a plurality of guiding units leads with door 7 edge contact to door 7 vertical movement.

The centering device further comprises a detection unit, the detection unit comprises a plurality of position sensors, the position sensors are respectively arranged on at least one supporting unit and at least one positioning unit, the position sensors in the supporting units are supporting position sensors 35, and the supporting position sensors 35 are arranged on the supporting frame 31 and located on one side of the supporting block 32; the position sensor in the positioning unit is a positioning position sensor 415, and the positioning position sensor 415 is provided on the positioning frame 41 and on the positioning pin 42 side. Each hinge correcting unit is also provided with a position sensor, the position sensor in the hinge correcting unit is a correcting position sensor 57, and the correcting position sensor 57 is arranged on the correcting frame 52 and positioned on one side of the fixed correcting block 53.

The working process of the multi-vehicle-type vehicle door centering device provided by the embodiment is as follows:

in an initial state, the jacking mechanism 2 of the centering device is in a jacking up state, each guide unit of the guide mechanism 6 is in a closed state, each support unit of the support mechanism 3 is in a closed state, each positioning unit of the positioning mechanism 4 is adjusted to a proper position corresponding to a vehicle type, and the two hinge correction units are in an open state.

The door 7 is carried by the carrying gripper above the centering device, and when the door 7 is in the raised position, the carrying gripper releases the door 7 and leaves, supporting the door 7 by the plurality of jacking blocks 24 of the jacking mechanism 2. The jacking frame 23 descends together with the vehicle door 7 under the driving of the jacking cylinder 22 of the jacking mechanism 2, and in the descending process, the vehicle door 7 is guided to descend by the contact of the guide surfaces 63 on the inner sides of the guide blocks 62 of the plurality of surrounding guide units with the edge of the vehicle door 7. During the descending process of the vehicle door 7, the positioning pins 42 of each positioning unit are inserted into the positioning holes of the vehicle door 7 in a one-to-one correspondence manner, when the vehicle door 7 is descended to the right position, the descending vehicle door 7 is supported by the supporting blocks 32 of each supporting unit, and meanwhile, the positioning supporting surfaces 44 on the positioning pins 42 support the descending vehicle door 7 in an auxiliary manner. When the supporting position sensor 35 and the positioning position sensor 415 detect that the vehicle door 7 descends to the right position, the supporting position sensor 35 and the positioning position sensor 415 start signals, the correcting swing arm cylinders 51 of the two hinge correcting units act to respectively drive the two movable correcting blocks 54 to turn over and close, hinge plates 73 of two hinges 71 on the vehicle door 7 are respectively pressed between the corresponding movable correcting blocks 54 and the fixed correcting blocks 53, the postures of the hinge plates 73 of the hinges 71 are corrected, the correcting position sensors 57 in the hinge correcting units detect whether the hinge plates 73 of the corresponding hinges 71 are corrected to the right position, and when the correcting position sensors 57 detect that the postures of the hinges 71 are in the right position, the postures of the whole vehicle door 7 and the postures of the hinges 71 on the vehicle door 7 meet the requirements. And subsequently, the vehicle door 7 is automatically provided with the vision guiding and positioning gripper to take the vehicle door 7, when the vehicle door 7 is automatically provided with the vision guiding and positioning gripper to move to a taking position, the two hinge correcting units are opened, and the vehicle door 7 is automatically provided with the vision guiding and positioning gripper to grip the vehicle door 7 to leave, so that the vehicle door 7 enters the next automatic vehicle door 7 mounting process.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a multi-vehicle type door centering device, includes base (1), its characterized in that: the base (1) is provided with a jacking mechanism (2), a supporting mechanism (3), a positioning mechanism (4), a hinge correcting mechanism (5) and a guide mechanism (6),

the jacking mechanism (2) is used for jacking the vehicle door (7) and driving the vehicle door (7) to vertically move; the guide mechanism (6) is used for guiding the vertical movement of the vehicle door (7); the positioning mechanism (4) is used for positioning the vehicle door (7); the supporting mechanism (3) is used for supporting the vehicle door (7) which moves in place;

the hinge correcting mechanism (5) comprises two hinge correcting units, the two hinge correcting units correspond to two hinges (71) on the vehicle door (7) respectively, each hinge correcting unit comprises a correcting frame (52), a fixed correcting block (53) and a movable correcting block (54), the correcting frames (52) are slidably mounted on the base (1), the fixed correcting blocks (53) are fixedly mounted on the correcting frames (52), the movable correcting blocks (54) are movably mounted on the correcting frames (52) and can be turned relative to the correcting frames (52), the hinge correcting units are opened or closed through turning of the movable correcting blocks (54), and in the closed state, the movable correcting blocks (54) and the fixed correcting blocks (53) are clamped on the upper side and the lower side of hinge plates (73) of the hinges (71) of the vehicle door (7) respectively.

2. The multi-vehicle type door centering device as claimed in claim 1, wherein: the jacking mechanism (2) comprises a lifting framework (23) which can be lifted, a plurality of jacking blocks (24) are arranged on the lifting framework (23), and the gravity center of the vehicle door (7) is jacked up through the plurality of jacking blocks (24);

the supporting mechanism (3) comprises at least one supporting unit, the positioning mechanism (4) comprises at least two positioning units, and each supporting unit and each positioning unit are all arranged on the periphery of the jacking mechanism (2);

the supporting unit comprises a supporting frame (31) capable of being turned over, a supporting block (32) is arranged on the supporting frame (31), and the vehicle door (7) is supported through the supporting block (32);

the positioning unit comprises positioning frames (41) which can slide in the left-right direction, the front-back direction and the vertical direction respectively, positioning pins (42) are arranged on the positioning frames (41), and the positioning pins (42) are matched with positioning holes of the vehicle door (7) to position the vehicle door (7);

the guide mechanism (6) comprises a plurality of guide units, the guide units are distributed on the periphery of the base (1) in the circumferential direction, and the inner sides of guide blocks (62) of the guide units are in contact with the edge of the vehicle door (7) so as to guide the vertical movement of the vehicle door (7).

3. The multi-vehicle type door centering device as claimed in claim 2, wherein: the centering device also comprises a detection unit, wherein the detection unit comprises a plurality of position sensors, and the at least one supporting unit and the at least one positioning unit are respectively provided with the position sensors; and each hinge correction unit is provided with a position sensor, and the position sensors in the hinge correction units are arranged on the correction frame (52) and positioned on one side of the fixed correction block (53).

4. The multi-vehicle type door centering device as claimed in claim 2, wherein: the bottom of the positioning pin (42) is provided with a positioning support column (43), the diameter of the top surface of the positioning support column (43) is larger than that of the bottom of the positioning pin (42), and the top surface of the positioning support column (43) is positioned on the periphery of the positioning pin (42) to form a positioning support surface (44).

5. The multi-vehicle type door centering device as claimed in claim 2, wherein: the positioning unit further comprises three groups of modules, the three groups of modules are respectively a first module (45), a second module (46) and a third module (47), the first module (45) is installed on the base (1), a first sliding block (48) of the first module (45) can slide left and right under the driving of the first module (45), the second module (46) is installed on the first sliding block (48) of the first module (45) through a first adapter plate (49), a second sliding block (410) of the second module (46) can slide front and back under the driving of the second module (46), the third module (47) is installed on the second sliding block (410) of the second module (46) through a second adapter plate (411), a third sliding block (412) of the third module (47) can slide vertically under the driving of the third module (47), and a positioning frame (41) of the positioning unit is installed on the third sliding block (412).

6. The multi-vehicle type door centering device as claimed in claim 5, wherein: the base (1) is equipped with first supplementary bearing structure on the side that is located first module (45), carries out slidingtype support to fishplate bar (49) through first supplementary bearing structure, on fishplate bar (49) being located second module (46) one side and being equipped with second supplementary bearing structure, carry out slidingtype support to fishplate bar second (411) through second supplementary bearing structure.

7. The multi-vehicle type door centering device as claimed in claim 2, wherein: the supporting unit further comprises a supporting base (33) and a supporting swing arm cylinder (34), the supporting base (33) is fixedly installed on the base (1), a cylinder body of the supporting swing arm cylinder (34) is installed on the supporting base (33), and the supporting frame (31) is fixedly installed on a swing arm of the supporting swing arm cylinder (34).

8. The multi-vehicle type door centering device as claimed in claim 1, wherein: among the unit is corrected to the hinge, correct frame (52) through fourth module (55) slidable mounting on base (1), fourth module (55) are installed on base (1), fourth slider (56) of fourth module (55) can slide along the horizontal direction under the drive of fourth module (55), the slip direction of fourth slider (56) and door (7) go up the axis direction parallel of hinge axle (72) of hinge (71), correct frame (52) bottom fixed mounting on fourth slider (56) of fourth module (55).

9. The multi-vehicle type door centering device as claimed in claim 1, wherein: the hinge correction unit further comprises a correction swing arm cylinder (51), the cylinder body of the correction swing arm cylinder (51) is installed on the correction frame (52), and the movable correction block (54) is fixedly installed on the swing arm of the correction swing arm cylinder (51).

10. The multi-vehicle type door centering device as claimed in claim 1, wherein: base (1) bottom is equipped with a plurality of supporting legs (11), supporting leg (11) bottom is connected with supporting baseplate (13) through connecting plate (12), supporting baseplate (13) fixed stay is subaerial, threaded connection has a vertical leveling bolt (14) on supporting leg (11), it has the identical support recess of shape bottom leveling bolt (14) to open on supporting baseplate (13) top surface, it has screw hole (15) to open below supporting recess to lie in on supporting baseplate (13), threaded connection has guide bolt in screw hole (15) of supporting baseplate (13), leveling bolt (14) bottom supports tightly in the support recess of supporting baseplate (13), leveling bolt (14) are hollow bolt, adjusting bolt's centre bore suit is outside guide bolt.