Train carriage transfer device and transfer method for surface treatment

Abstract

The present invention discloses a train carriage transfer device and transfer method for surface treatment. The train carriage transfer device includes a transverse mother car that moves laterally and linearly along a transverse track, and a longitudinal transfer sub-cart that can move longitudinally and linearly along the length direction of the transverse mother car is arranged on the transverse mother car. The transverse mother car is provided with a sub-cart track and a trolley track for longitudinal movement of the trolley. The transverse mother car moves to a corresponding position, and after the sub-cart track and the trolley track are docked with the longitudinal track in the process chamber body, the longitudinal transfer sub-cart extends out along the sub-cart track, moves along the longitudinal track into the process chamber body, loads the trolley carrying the workpiece in the process chamber body and then returns, or sends the trolley carrying the workpiece into the process chamber body and then returns after unloading. The present invention can cooperate with the trolley carrying the workpiece, and transport the trolley and the workpiece on the trolley from one process chamber body to another process chamber body through longitudinal and transverse transport, so as to realize the workpiece transfer in the workpiece surface treatment process.

Description

Technical Field

[0001] The present invention relates to the technical field of workpiece transfer, and in particular to a train carriage transfer device and a transfer method for surface treatment. Background Art

[0002] In the production and processing of long and large vehicles such as trains or subway cars, such as the coating surface treatment process, it is necessary to move the large vehicle workpiece from one process chamber to another process chamber, and each process chamber body is independent and not interconnected. After the processing in one process chamber is completed, it is necessary to move from the process chamber body to the target process chamber body. Since such workpieces are large in size, especially long, it is inconvenient to use the existing automobile painting moving platform or moving equipment when moving, so improvement is needed. Summary of the invention

[0003] The purpose of the present invention is to provide a train carriage transfer device and a transfer method for surface treatment in view of the technical defects existing in the prior art.

[0004] The first aspect of the present invention provides a train carriage transfer device for surface treatment, including a transverse moving mother car that can move laterally and linearly along a transverse track, the transverse moving mother car is provided with a longitudinal moving sub-carriage that can move longitudinally and linearly along the length direction of the transverse moving mother car, the transverse moving mother car is provided with a sub-carriage track for longitudinally and linearly moving the longitudinal moving sub-carriage and a trolley track for longitudinally and linearly moving a trolley carrying workpieces, after the transverse moving mother car is driven on the transverse track to move to a corresponding position along the transverse track, the sub-carriage track and the trolley track can be docked with the corresponding longitudinal track in a process chamber body, after the track docking, the longitudinal moving sub-carriage is driven to move longitudinally along the sub-carriage track and extend out and can move along the longitudinal track into the process chamber body, load the trolley carrying workpieces in the process chamber body and then return to the transverse moving mother car, or send the trolley carrying workpieces to the process chamber body and then return to the transverse moving mother car after unloading.

[0005] As a preferred technical solution, the transverse mother vehicle is provided with running wheels, which cooperate with the transverse track, are supported on the transverse track, and are driven to move along the transverse track.

[0006] As a preferred technical solution, the moving wheels at the bottom of the trolley cooperate with the trolley track, so that the trolley can move along the trolley track when the longitudinal transfer sub-trolley moves.

[0007] As a preferred technical solution, a positioning device is provided on the longitudinal transfer sub-trolley to position the trolley, including a positioning plate that can be driven to rotate and rise and reversely rotate and lower. When the positioning plate is raised, it can limit the moving stroke of the trolley relative to the longitudinal transfer sub-trolley, so that the longitudinal transfer sub-trolley can drive the trolley to move when it moves, and when it is lowered, the longitudinal transfer sub-trolley is separated from the trolley.

[0008] As a preferred technical solution, the bottom of the trolley has a downwardly protruding positioning protrusion. During positioning, two positioning plates rise in the front and rear directions of each positioning protrusion to block the positioning protrusion in the front and rear to limit its moving range.

[0009] As a preferred technical solution, the positioning plate is mounted on a positioning shaft that is driven to rotate forward and reversely by a predetermined angle, and the positioning shaft is arranged along the length direction of the longitudinal displacement vehicle.

[0010] As a preferred technical solution, the positioning shaft is hinged to the rotating drive rod, and the rotating drive rod is arranged radially along the positioning shaft and is driven to reciprocate horizontally. When it moves horizontally, it can drive the hinged rotating drive rod to rotate forward or reverse, thereby controlling the positioning plate to rise or fall.

[0011] As a preferred technical solution, the longitudinal moving sub-trolley is provided with a friction driving mechanism, which includes two relatively arranged friction driving wheels, the wheel surfaces of the two friction driving wheels are in contact and connected with two relatively side surfaces of a driving rod fixedly installed along the length direction of the longitudinal moving sub-trolley, and the friction driving wheels are driven to rotate to move the driving rod, thereby causing the longitudinal moving sub-trolley to move synchronously.

[0012] As a preferred technical solution, the longitudinal transfer trolley is provided with moving wheels, which are supported on the trolley tracks. There are two trolley tracks, which are arranged opposite to each other and spaced apart in the width direction. Each trolley track corresponds to a plurality of moving wheels arranged at intervals, and the longitudinal transfer trolley moves longitudinally on the trolley tracks through the moving wheels.

[0013] As a preferred technical solution, the transverse track is arranged outside the process chamber body, and the corresponding longitudinal track in the process chamber body includes a sub-trolley longitudinal track for the longitudinal linear movement of the longitudinal transfer sub-trolley and a trolley longitudinal track for the longitudinal linear movement of the trolley; after the tracks are docked, the sub-trolley longitudinal track is docked with the sub-trolley track, and the trolley longitudinal track is docked with the trolley track.

[0014] In a second aspect of the present invention, a method for transferring a train carriage for surface treatment is provided, wherein a train carriage as a workpiece is moved by means of a transverse moving mother car, wherein the transverse moving mother car is provided with a longitudinal moving child car, and the longitudinal moving child car is provided with a positioning device, and the transverse moving mother car is used to maintain the relative position of the train carriage by means of the positioning device during the transverse movement of the train carriage along the width direction of the train carriage;

[0015] The longitudinal shift sub-carriage moves longitudinally along the length direction of the transverse shift mother car to realize the longitudinal movement of the train car along the length direction of the train car. The driving mechanism of the longitudinal shift sub-carriage is arranged on the transverse shift mother car. The longitudinal movement of the train car along the length direction of the train car is realized by means of the positioning device on the longitudinal shift sub-carriage, so that the train car moves longitudinally together with the longitudinal shift sub-carriage and the positioning device into the process chamber body or moves out of the process chamber body. The driving mechanism of the positioning device is arranged on the transverse shift mother car to realize the opening and closing of the positioning device controlled outside the process chamber body;

[0016] The steps to move the workpiece out of the process chamber are:

[0017] The unloaded transverse mother vehicle moves along the transverse track and docks with the longitudinal track in the process chamber body;

[0018] The longitudinal transfer sub-carriage moves longitudinally from the transverse transfer mother car and extends outward, and extends into the process chamber body through the docking longitudinal track;

[0019] After the trolley to be removed from the process chamber and the workpiece it carries are loaded on the longitudinal transfer sub-trolley and positioned, the longitudinal transfer sub-trolley carries the trolley and the workpiece back to the transverse transfer mother car along the longitudinal track;

[0020] The steps for moving the workpiece into the process chamber are:

[0021] The heavy-loaded transverse mother car moves along the transverse track and docks with the longitudinal track in the process chamber;

[0022] The longitudinal transfer sub-carriage loaded with the trolley and the workpiece carried on the trolley moves longitudinally outward from the transverse transfer mother car and extends into the process chamber body through the docking longitudinal track;

[0023] The trolley on the longitudinal transfer sub-trolley and the workpiece carried on the trolley are unloaded in the process chamber body, and the unloaded longitudinal transfer sub-trolley returns to the transverse transfer mother car along the longitudinal track.

[0024] The train carriage transfer device for surface treatment of the present invention is arranged on the transverse mother car along the length direction, and the longitudinal transfer sub-carriage driven to move longitudinally and linearly, and the longitudinal transfer sub-carriage is arranged with trolley tracks on both sides of the longitudinal direction, and the transverse mother car is equipped with the longitudinal track of the sub-carriage of the longitudinal transfer sub-carriage, so that it can cooperate with the trolley carrying the workpiece, and the trolley and the workpiece thereon are transported from one process chamber to another process chamber through longitudinal and transverse transport, so as to realize the transportation and movement of the workpiece in the workpiece surface treatment process. The present invention is applicable to train carriages but not limited to the movement of all workpieces in train carriages for similar occasions. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is an overall schematic diagram of a train carriage transfer device for surface treatment according to an embodiment of the present invention;

[0026] Figure 2 It is a partial structural diagram of a train carriage transfer device for surface treatment according to an embodiment of the present invention;

[0027] Figure 3 It is a partial schematic diagram of a trolley on a transverse mother vehicle according to an embodiment of the present invention;

[0028] Figure 4 It is a partial schematic diagram of the transverse mother vehicle on the transverse track according to an embodiment of the present invention;

[0029] Figure 5 It is a schematic diagram of the arrangement of the friction driving wheels inside the transverse mother vehicle according to an embodiment of the present invention;

[0030] Figure 6 It is a schematic diagram of the lifting of the positioning device on the transverse mother vehicle according to an embodiment of the present invention;

[0031] Figure 7 It is a schematic diagram of the rotation control structure of the positioning device on the transverse mother vehicle according to an embodiment of the present invention;

[0032] Figure 8 It is a partial axonometric structural diagram of the longitudinal transfer vehicle on the transverse transfer vehicle according to an embodiment of the present invention;

[0033] Fig. 9 A schematic diagram of a rotation control mechanism of a positioning device according to an embodiment of the present invention;

[0034] Fig.10 This is a front view of the trolley on the transverse mother vehicle according to an embodiment of the present invention;

[0035] Fig.11 for Fig.10 Middle AA section view;

[0036] Fig.12 It is a schematic diagram of a train carriage outside the workstation room;

[0037] Fig.13 This is a schematic diagram of the train carriage in the workstation room. DETAILED DESCRIPTION

[0038] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0039] like Figures 1 to 13 As shown, a train carriage transfer device for surface treatment according to an embodiment of the present invention comprises a transverse moving mother car 2 capable of transverse linear movement along a transverse track, on which a longitudinal moving sub-carriage 21 capable of longitudinal linear movement along the length direction of the transverse moving mother car is arranged, and on both sides of the longitudinal direction of the longitudinal moving sub-carriage, trolley tracks 31 for longitudinal linear movement of a trolley carrying workpieces are arranged on the transverse moving mother car for the travel of the trolley 3 carrying the workpiece, and a sub-carriage track for longitudinal linear movement of the longitudinal moving sub-carriage is arranged on the transverse moving mother car, and the transverse moving mother car 2 is arranged on the transverse direction. The sub-trolley is driven to move along the transverse track 1. After moving to the corresponding position, the sub-trolley track and the trolley track can be docked with the corresponding longitudinal track 4 arranged in the process chamber body to form a docking straight track. Then the sub-trolley is moved along the sub-trolley track and extends into the process chamber body through the corresponding longitudinal track. When returning, the trolley carrying the workpiece in the process chamber body can be moved out to the transverse mother car through the docking straight track, or the trolley carrying the workpiece on the transverse mother car can be moved into the process chamber body for unloading and then returned to the transverse mother car.

[0040] When the workpiece is moved out of the process chamber body, the longitudinal shifting trolley is driven to move longitudinally along the trolley track and extend out, move to the corresponding longitudinal track in the process chamber through the trolley track, and then move longitudinally along the longitudinal track in the process chamber to the target position (such as the target position in the process chamber body 100) to load the trolley carrying the workpiece 200, and then carry the trolley and the workpiece along the longitudinal track in the process chamber, the trolley track, and the trolley track to return to the transverse shifting mother trolley, so as to retract the workpiece and the trolley in the process chamber body to the transverse shifting mother trolley; and when the workpiece is moved into the process chamber body, the longitudinal shifting trolley is driven to move longitudinally along the trolley track and extend out, carry the trolley carrying the workpiece to move, and send the trolley carrying the workpiece to the target position (such as the target position in the process chamber body 100) through the trolley track, the trolley track and the longitudinal track in the process chamber body. After unloading, the longitudinal shifting trolley returns to the transverse shifting mother trolley along the longitudinal track in the process chamber body and the trolley track; the transverse track 1 is arranged perpendicular to the longitudinal track 4.

[0041] Among them, the longitudinal track 4 includes a longitudinal track 41 for longitudinal movement of the longitudinally shifted vehicle, and a trolley longitudinal track 42 for longitudinal movement of the trolley. The trolley longitudinal track 42 is arranged on the outer side of the longitudinal track 41 of the longitudinally shifted vehicle, and the longitudinal track 4 as a whole constitutes the longitudinal track 4.

[0042] The workpiece may be a train carriage or a workpiece similar to a train carriage that needs surface treatment. The lateral movement direction of the transverse mother vehicle is consistent with the loaded workpiece, such as the width direction of the train carriage, and is perpendicular to the length direction of the train carriage. The longitudinal movement direction of the longitudinal sub-vehicle 21 is consistent with the loaded workpiece, such as the length direction of the train carriage, and is perpendicular to the width direction of the train carriage.

[0043] Through the above-mentioned technical scheme, the workpiece moving platform of the embodiment of the present invention can control the movement of the transverse mother car on the transverse track, move to the predetermined position on the transverse track, and after docking with the longitudinal tracks at both ends or one end, control the longitudinal sub-carriage to extend, extend outward with the help of the longitudinal track, away from the transverse track, move to the target position along the longitudinal track to load the trolley and the workpiece on the trolley and then retract it, or send the trolley and the workpiece on the trolley to the target position for unloading and then return, thereby realizing the conveying and processing of the workpiece.

[0044] The transverse moving mother vehicle is a rectangular frame structure, and the longitudinal moving sub-vehicle is a rectangular frame structure, which can be composed of steel structures welded or bolted.

[0045] In the embodiment of the present invention, the longitudinal track is arranged in the process chamber body, and the transverse track is arranged outside the process chamber body. The longitudinal track includes a longitudinal track for the longitudinal sub-trolley for longitudinal linear movement of the longitudinal sub-trolley and a longitudinal track for the trolley for longitudinal linear movement of the trolley. After the tracks are docked, the longitudinal track of the sub-trolley docks with the sub-trolley track, and the longitudinal track of the trolley docks with the trolley track. In this way, the workpiece conveying platform can convey the workpiece from one process chamber body to another process chamber body for processing through the movement of the transverse track and the longitudinal track.

[0046] In the embodiment of the present invention, the transverse transfer vehicle is provided with running wheels, and the running wheels cooperate with the transverse track 1, are supported on the transverse track, and are driven to move along the transverse track.

[0047] Among them, there are at least two transverse rails 1, which are arranged relatively parallel and separated along the width direction, or there may be more, which is determined according to the length of the transverse mother vehicle 2. A driving shaft 22 may be provided on one side of the transverse mother vehicle, which is connected to the driving wheel 20 in the walking wheel, and is driven by a motor to control the transverse mother vehicle to move on the transverse rail 1.

[0048] In the embodiment of the present invention, moving wheels 30 are installed at the bottom of the trolley 3, and the moving wheels cooperate with the trolley track 31, so that when the longitudinal moving sub-trolley 21 is driven to move, the trolley positioned on the longitudinal moving sub-trolley can move along the trolley track 31, thereby facilitating entry and exit of the transverse moving mother vehicle.

[0049] In the embodiment of the present invention, the longitudinal transfer vehicle is provided with a positioning device to position the trolley 3, including a positioning plate 6 that is driven to rotate and rise and reversely rotate and lower. The positioning plate is in a lowered state when not in position and is hidden in the housing of the longitudinal transfer vehicle. When in position, it rises from the opening on the housing. After the positioning plate is raised, it can limit the movement stroke of the trolley parked above. Please refer to Figure 6 As shown, the trolley and the longitudinal transfer trolley maintain a relatively unchanged positional relationship, that is, limit their moving range relative to the longitudinal transfer trolley, so that the longitudinal transfer trolley can drive the trolley to move when it moves, and after being lowered, the longitudinal transfer trolley is separated or separated from the trolley and the workpiece on the trolley, thereby realizing unloading or loading of the trolley and the workpiece on the trolley.

[0050] In order to effectively position the trolley, in the embodiment of the present invention, the bottom of the trolley has a downwardly protruding positioning protrusion 32. When positioning, two positioning plates 6 are raised in the front and rear directions of each positioning protrusion 32 to block the positioning protrusion in the front and rear to limit the moving stroke. Fig.10 shown.

[0051] In an embodiment of the present invention, the positioning plate is installed on a positioning shaft 61 which is driven to rotate forward and reversely by a predetermined angle. The positioning shaft is arranged along the length direction of the longitudinal movement sub-trolley, and its axial direction is consistent with the length direction of the longitudinal movement sub-trolley. The positioning shaft is hinged to a rotating drive rod 62, and the rotating drive rod is arranged along the radial direction of the positioning shaft and extends out from a guide hole on the frame 211 of the longitudinal movement sub-trolley. It is driven to reciprocate horizontally. When it moves horizontally, it can drive the hinged rotating drive rod to rotate forward or reverse, thereby controlling the positioning plate to rise or fall.

[0052] Specifically, the rotating drive rod is fixedly connected to the moving rod 63 on the outer side of the frame of the longitudinal moving sub-trolley. The moving rod 63 is arranged along the length direction of the longitudinal moving sub-trolley and is clamped by at least two groups of clamping wheels 64 arranged at intervals. Each group of clamping wheels is composed of two clamping wheel surfaces arranged opposite to each other. Each group of clamping wheels is installed on a guide rail 65 that can move vertically relative to the length direction of the longitudinal moving sub-trolley. A driving motor reducer mechanism 66 is arranged on the outer side to drive the clamping wheel to move along the guide rail. The driving shaft of the driving motor reducer mechanism 66 is connected to the driving wheel 68 through a connecting plate. The driving wheel 68 is installed in the long hole of the mounting frame 67 of the clamping wheel. When rotating, the clamping wheel is driven to move horizontally through the mounting frame, thereby controlling the movement of the moving rod 63 and realizing the lifting or lowering control of the positioning plate. Please refer to Figure 6 , 7 , 8, and 9. When receiving the trolley, after the longitudinal transfer sub-trolley moves and extends under the trolley at the target position, the trolley is supported by its moving wheels and stops above the longitudinal transfer sub-trolley. At this time, the positioning plate is controlled to rotate and rise. After positioning the trolley, the longitudinal transfer sub-trolley returns, bringing the trolley and the workpiece on the trolley back as a whole, thereby transporting the trolley and the workpiece to the transverse mother trolley for the next step of transportation.

[0053] In an embodiment of the present invention, the longitudinal moving sub-trolley is provided with an electrically controlled friction driving mechanism, and the friction driving mechanism includes two oppositely arranged friction driving wheels 5 which are driven to rotate by a motor 51, and the wheel surfaces of the two friction driving wheels are in contact and connected with two opposite side surfaces of a driving rod 212 fixed along the length direction of the longitudinal moving sub-trolley. The rotation of the friction driving wheels drives the driving rod 212 to move, thereby causing the longitudinal moving sub-trolley 21 to move synchronously.

[0054] In the embodiment of the present invention, the bottom of the longitudinal shifting trolley 21 is provided with moving wheels 214 of the longitudinal shifting trolley, and the moving wheels 214 of the longitudinal shifting trolley are supported on the trolley tracks 213 installed on the transverse shifting mother trolley. The trolley tracks 213 are two and are arranged opposite to each other in the width direction. The moving wheels of the longitudinal shifting trolley are arranged corresponding to the trolley tracks, and each trolley track corresponds to a plurality of moving wheels 214 of the longitudinal shifting trolley arranged at intervals. When the longitudinal shifting trolley moves under the drive of the friction driving mechanism, the moving wheels of the longitudinal shifting trolley are used to realize movement on the trolley tracks, thereby realizing It is now docked with the longitudinal track in the process chamber body, including docking with the longitudinal track of the sub-trolley used for the longitudinal movement of the longitudinal transfer sub-trolley, and docking with the longitudinal track of the trolley used for the longitudinal movement of the trolley, so as to realize the movement of the trolley and the workpiece on the trolley, and transport them from outside the process chamber to inside the process chamber, lower the positioning plate, unload the trolley and the workpiece and then return, or load the trolley and the workpiece on the trolley in the process chamber body and then return, move them to the transverse mother trolley, and after the trolley is positioned by raising the positioning plate, the transverse mother trolley moves along the transverse track and transports them to the target position.

[0055] It can be seen that the train carriage transfer device for surface treatment provided in the embodiment of the present invention is configured by arranging a driven longitudinal transfer sub-trolley that can move linearly in the length direction on the transverse transfer mother car, and trolley tracks are arranged on both sides of the length direction of the longitudinal transfer sub-trolley and sub-trolley tracks are arranged on the transverse transfer mother car. In this way, it can cooperate with the trolley carrying the workpiece, and the trolley and the workpiece thereon can be transported from one process chamber to another process chamber through longitudinal and transverse transport, thereby realizing transportation and movement in the workpiece surface treatment process.

[0056] The embodiment of the present invention further provides a train carriage transfer method for surface treatment, wherein the train carriage as a workpiece is moved transversely by means of a transverse moving mother car, wherein the transverse moving mother car is provided with a longitudinal moving child car, and the longitudinal moving child car is provided with a positioning device, and the transverse moving mother car is used to maintain the relative position of the train carriage by means of the positioning device during the transverse movement of the train carriage along the width direction of the train carriage;

[0057] The longitudinal shift sub-carriage moves longitudinally along the length direction of the transverse shift mother car, so as to realize the longitudinal movement of the train carriage along the length direction of the train carriage. The driving mechanism of the longitudinal shift sub-carriage is arranged on the transverse shift mother car, and the longitudinal movement of the train carriage along the length direction of the carriage is realized by means of the positioning device on the longitudinal shift sub-carriage, so that the train carriage enters into the process chamber body or moves out of the process chamber body together with the longitudinal shift sub-carriage and the positioning device through longitudinal movement. The driving mechanism of the positioning device is arranged on the transverse shift mother car, so as to realize the control of opening and closing of the positioning device outside the process chamber body.

[0058] The steps to move the workpiece (such as a train car) out of the process chamber are:

[0059] The unloaded transverse mother vehicle moves along the transverse track and docks with the longitudinal track in the process chamber body;

[0060] The longitudinal transfer carriage moves longitudinally from the transverse transfer carriage to extend outwards and extends into the process chamber body through the longitudinal track connected thereto;

[0061] After the trolley to be removed from the process chamber and the workpiece it carries are loaded on the longitudinal transfer sub-trolley and positioned, the longitudinal transfer sub-trolley carries the trolley and the workpiece back to the transverse transfer mother car along the longitudinal track;

[0062] The steps to move a workpiece (such as a train car) into the process chamber are:

[0063] The heavy-loaded transverse mother car moves along the transverse track and docks with the longitudinal track in the process chamber;

[0064] The longitudinal transfer sub-carriage loaded with the trolley and the workpiece carried on the trolley moves longitudinally outward from the transverse transfer mother car and extends into the process chamber body through the docking longitudinal track;

[0065] The trolley on the longitudinal transfer sub-trolley and the workpiece carried on the trolley are unloaded in the process chamber body, and the unloaded longitudinal transfer sub-trolley returns to the transverse transfer mother car along the longitudinal track along the original route.

[0066] The above is only a preferred embodiment of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A train carriage transfer device for surface treatment, characterized in that: The present invention relates to a method for carrying out a longitudinal movement of a workpiece by moving the workpiece carrier to a longitudinal position along a longitudinal direction of the workpiece carrier, wherein the longitudinal movement of the workpiece carrier is arranged on the transverse movement master car, and the longitudinal movement of the workpiece carrier is arranged on the transverse movement master car. The transverse movement master car is provided with a sub-carriage track for the longitudinal linear movement of the longitudinal sub-carriage and a trolley track for the longitudinal linear movement of the trolley carrying the workpiece. After the transverse movement master car is driven to move to a corresponding position along the transverse track, the sub-carriage track and the trolley track can be docked with the corresponding longitudinal track in the process chamber body; after the track docking, the longitudinal movement sub-carriage is driven to move longitudinally along the sub-carriage track and extend out and can move into the process chamber body along the longitudinal track, load the trolley carrying the workpiece in the process chamber body and then return it to the transverse movement master car, or send the trolley carrying the workpiece into the process chamber body and then return it to the transverse movement master car after unloading; The longitudinal transfer sub-trolley is provided with a positioning device to position the trolley, including a positioning plate that can be driven to rotate and rise and reversely rotate and lower. When the positioning plate is raised, it can limit the movement stroke of the trolley relative to the longitudinal transfer sub-trolley, so that the longitudinal transfer sub-trolley can drive the trolley to move when it moves, and when it is lowered, the longitudinal transfer sub-trolley is separated from the trolley; The positioning plate is mounted on a positioning shaft that can be driven to rotate forward and backward by a predetermined angle, and the positioning shaft is arranged along the length direction of the longitudinal transfer vehicle; A rotating driving rod is provided, the rotating driving rod is connected to a control moving rod arranged outside, the control moving rod is arranged along the length direction of the longitudinal moving sub-trolley, and the driving device is arranged on the transverse moving mother car. When the positioning device moves into the process chamber body with the longitudinal moving sub-trolley, the driving device can always be kept outside the process chamber body to prevent being contaminated by the paint in the chamber body; The longitudinal moving sub-trolley is provided with a friction driving mechanism, which includes two relatively arranged friction driving wheels, the wheel surfaces of the two friction driving wheels are in contact and connected with two relatively side surfaces of a driving rod installed along the length direction of the longitudinal moving sub-trolley, and the friction driving wheels are driven to rotate to move the driving rod, thereby causing the longitudinal moving sub-trolley to move synchronously.

2. The train carriage transfer device for surface treatment according to claim 1, characterized in that: The transverse moving mother vehicle is provided with running wheels, which cooperate with the transverse track, are supported on the transverse track, and are driven to move along the transverse track.

3. The train carriage transfer device for surface treatment according to claim 1, characterized in that: The moving wheels at the bottom of the trolley cooperate with the trolley track, so that the trolley can move along the trolley track when the longitudinal transfer sub-trolley moves.

4. The train carriage transfer device for surface treatment according to claim 1, characterized in that: The bottom of the trolley is provided with a positioning protrusion protruding downward. During positioning, two positioning plates are raised in the front and rear directions of each positioning protrusion to block the positioning protrusion in the front and rear to limit its moving stroke.

5. The train carriage transfer device for surface treatment according to claim 1, characterized in that: The positioning shaft is hinged to a rotating drive rod, which is arranged radially along the positioning shaft and is driven to reciprocate horizontally. When it moves horizontally, it drives the hinged rotating drive rod to rotate forward or reverse, thereby controlling the positioning plate to rise or fall.

6. The train carriage transfer device for surface treatment according to claim 1, characterized in that: The longitudinally moving sub-trolley is provided with moving wheels, which are supported on the sub-trolley tracks. There are two sub-trolley tracks, which are arranged opposite to each other in the width direction. Each sub-trolley track corresponds to a plurality of moving wheels arranged at intervals. The longitudinally moving sub-trolley moves longitudinally on the sub-trolley tracks through the moving wheels.

7. The train carriage transfer device for surface treatment according to claim 1, characterized in that: The transverse track is arranged outside the process chamber body, and the corresponding longitudinal track in the process chamber body includes a longitudinal track for the longitudinal transfer sub-trolley to move longitudinally and linearly and a trolley longitudinal track for the trolley to move longitudinally and linearly; After the tracks are docked, the longitudinal track of the sub-trolley is docked with the sub-trolley track, and the longitudinal track of the trolley is docked with the trolley track.

8. A train carriage transfer method for surface treatment, using the train carriage transfer device for surface treatment according to any one of claims 1 to 7, characterized in that: The movement of the train carriage serving as a workpiece is achieved with the help of a transverse moving mother car, wherein the transverse moving mother car is provided with a longitudinal moving sub-carriage, and the longitudinal moving sub-carriage is provided with a positioning device. During the transverse movement of the transverse moving mother car along the width direction of the train carriage, the relative position of the train carriage is maintained with the help of the positioning device; the longitudinal moving sub-carriage moves longitudinally along the length direction of the transverse moving mother car to achieve the longitudinal movement of the train carriage along the length direction of the train carriage, and the driving mechanism of the longitudinal moving sub-carriage is arranged on the transverse moving mother car, and the longitudinal movement of the train carriage along the length direction of the train carriage is achieved with the help of the positioning device on the longitudinal moving sub-carriage, so that the train carriage moves longitudinally into or out of the process chamber together with the longitudinal moving sub-carriage and the positioning device, and the driving mechanism of the positioning device is arranged on the transverse moving mother car to achieve the control of opening and closing of the positioning device outside the process chamber; The steps of moving the workpiece out of the process chamber are as follows: an unloaded transverse moving vehicle moves along the transverse track and docks with the longitudinal track in the process chamber; a longitudinal moving vehicle moves longitudinally outward from the transverse moving vehicle and extends into the process chamber through the docked longitudinal track; after the trolley to be moved out of the process chamber and the workpiece it carries are loaded on the longitudinal moving vehicle and positioned, the longitudinal moving vehicle carries the trolley and the workpiece back to the transverse moving vehicle along the longitudinal track; The steps for moving the workpiece into the process chamber are: the heavily loaded transverse moving mother car moves along the transverse track and docks with the longitudinal track; the longitudinal moving sub-cart loaded with the trolley and the workpiece carried on the trolley moves longitudinally from the transverse moving mother car to extend outward, and extends into the process chamber through the docking longitudinal track; the trolley and the workpiece carried on the trolley on the longitudinal moving sub-cart are unloaded in the process chamber, and the unloaded longitudinal moving sub-cart returns to the transverse moving mother car along the longitudinal track.

Images