CN210620136U - Automobile hoisting device and automobile bottom coating conveying line - Google Patents

Abstract

The utility model relates to the field of automobile conveying equipment, in particular to an automobile lifting device and an automobile bottom coating conveying line, wherein the automobile lifting device comprises a conveyor and a lifting appliance, the lifting appliance comprises a hanger and a telescopic supporting arm, the telescopic supporting arm comprises a fixed arm fixed on the hanger and a movable arm assembled on the fixed arm in a guiding and moving way along the horizontal direction, a movable arm driving mechanism is used for being installed at a connecting station of the conveying line to drive the movable arm to move so as to lead the telescopic supporting arm to stretch, a movable arm driving mechanism comprises a driving motor and a pushing piece driven by the driving motor to reciprocate and used for driving the movable arm to move, the pushing piece is driven by the driving motor to reciprocate so as to realize the stretching of the telescopic supporting arm, compared with the current mode of passing through an air cylinder, the stretching amount of the telescopic supporting arm can be conveniently adjusted by controlling the rotating angle of the motor, the telescopic supporting arm can be suitable, the problem of current hoist because adopt the cylinder drive flexible application scope that causes little is solved.

Description

Automobile hoisting device and automobile bottom coating conveying line

Technical Field

The utility model relates to an automobile conveying equipment field, in particular to automobile lifting device and car primary coat transfer chain.

Background

At present, the bottom coating process of an automobile coating workshop can protect the bottom of an automobile body from being influenced by stone chips and external mechanical pressure, meanwhile, the noise in a cab can be reduced, and the comfort and the reliability of an automobile can be improved. The parts for bottom spraying comprise a vehicle body bottom plate, a wheel cover and a skirt, so the vehicle body needs to be suspended for spraying when the bottom is sprayed. The utility model discloses a chinese utility model patent of grant bulletin number is CN205060770U, grant bulletin date is 2016.03.02 discloses a conveying system and hoist thereof, the hoist is including being used for along direction of delivery removal assembly roof-rack on the conveyer, the left and right sides symmetry of roof-rack is provided with the trailing arm that is used for bearing work piece bottom, the trailing arm is in the below of roof-rack, the trailing arm can rotate the assembly on the davit between trailing arm and roof-rack around upper and lower axis, be equipped with on the roof-rack and supply the work piece to pass and fall the clamping space on the trailing arm and be used for the overlap joint bearing structure on the conveyer, bearing structure is in the periphery in clamping space on the roof-rack, when needs hoist the work piece, the work piece can fall on the trailing arm through the clamping space on the roof-rack, required installation space when having reduced the whole height of hoist and. When the lifting appliance is used, a workpiece enters the bottom-coat inlet connecting position, the air cylinder pushes the supporting arm to rotate, the lifting mechanism separates the workpiece from the prying body, the workpiece is hung on the lifting appliance and is conveyed to the working section by the four-column lifter, the workpiece is lowered to the low position by the four-column lifter at the outlet connecting position, the air cylinder pushes the supporting arm to rotate, the workpiece is hung on the prying body, and the lifting appliance returns to the inlet connecting position along a reverse line at the high position and can be overhauled offline. The lifting appliance can be suitable for hanging the same type of vehicle, and cannot meet practical requirements for a coating workshop which is required to produce both large vehicle types and small vehicle types.

Chinese patent with grant bulletin number CN208471355U, grant bulletin date 2019.02.05 discloses a mechanism for realizing co-linear handover of a primer cart, which comprises a lifting appliance, the lower part of the lifting appliance is provided with three pairs of supporting legs, each pair of supporting legs are arranged oppositely, wherein slidable telescopic sliding supporting legs are installed below the two pairs of supporting legs, a positioning mechanism is installed outside the sliding supporting legs, a ground auxiliary telescopic mechanism for controlling the telescopic of the sliding supporting legs is arranged below the lifting appliance, a locking and opening device of the positioning structure is opened by a vertical cylinder of the ground auxiliary telescopic mechanism, and the horizontal cylinder of the ground auxiliary telescopic mechanism drives the sliding supporting legs to move horizontally. Through the horizontal movement of the sliding support legs, the lifting appliance can be suitable for lifting large vehicle types and small vehicle types. This kind of hoist passes through the removal that the cylinder drove the landing leg that slides, and the cylinder is because the characteristic of its own, and the removal process is unstable, and the impact force is great, and cylinder pole extension precision is difficult to control, in order to guarantee the precision of supplementary telescopic machanism, only stretches out and retracts two positions usually during the use, also namely the hoist can only be applicable to the motorcycle type of two kinds of differences usually, and application scope is little.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a lifting appliance to solve present lifting appliance because the problem that the application scope that adopts the cylinder drive to stretch out and draw back and cause is little, in addition, the utility model discloses an aim at still provides an automobile bottom coat transfer chain of using above-mentioned lifting appliance to solve the little problem of present automobile bottom coat transfer chain application scope.

In order to achieve the above purpose, the utility model discloses truck hangs device's technical scheme does: the truck lifting device comprises:

a conveyor for conveying the cars to be coated,

the lifting appliance is driven by a conveyor to lift an automobile and comprises a lifting frame and a telescopic supporting arm arranged at the lower end of the lifting frame and used for supporting the automobile, the telescopic supporting arm comprises a fixed arm fixed on the lifting frame and a movable arm assembled on the fixed arm in a guiding and moving mode along the horizontal direction,

the movable arm driving mechanism: is used for being arranged at the joint station of the conveying line and driving the movable arm to move to enable the telescopic bracket arm to be telescopic,

the movable arm driving mechanism comprises a driving motor and a pushing piece which is driven by the driving motor to reciprocate and is used for driving the movable arm to move, the driving motor drives the pushing piece to reciprocate through a screw rod nut mechanism, and the pushing piece is driven by a nut of the screw rod nut mechanism; or the driving motor drives the pushing piece to reciprocate through the gear rack mechanism, the pushing piece is driven by the rack of the gear rack mechanism, or the driving motor drives the pushing piece to reciprocate through the chain wheel mechanism, the chain wheel mechanism comprises a driving chain wheel and a driving chain, the pushing piece is arranged on the driving chain,

the movable arm is provided with a movable arm matching structure which is used for matching with the pushing piece in a pushing way.

The utility model has the advantages that: the driving motor drives the pushing piece to move back and forth, the telescopic supporting arm is achieved, compared with the existing mode of passing through the air cylinder, the telescopic supporting arm can be conveniently adjusted in extension amount through control over the rotation angle of the motor, the telescopic supporting arm can be suitable for automobiles of various different types, and the problem that the existing lifting appliance is small in application range due to the fact that the air cylinder is adopted to drive the telescopic supporting arm is solved.

Furthermore, the movable arm matching structure comprises a stop lever fixed on the horizontal side of the movable arm, and the pushing piece and the stop lever push and cooperate to push the movable arm to move. The stop lever is arranged at the horizontal side of the movable arm, so that the mounting space is sufficient, and the mounting of the driving mechanism of the movable arm is convenient.

Further, the pushing part comprises at least two shifting blocks arranged at intervals in the moving direction of the movable arm, and a blocking rod for the blocking rod to extend into the interval is formed between every two adjacent shifting blocks, so that the blocking rod inserted between the two shifting blocks is driven by the two shifting blocks to extend into the interval to move when the chain rotates forwards and backwards. Through two shifting blocks and the matching of the stop lever, the structure is simple and the installation is convenient.

Furthermore, in order to avoid interference of sundries with the driving chain, a chain protective cover which covers the driving chain is arranged on the rack of the movable arm driving mechanism, and a strip-shaped opening which avoids the pushing piece is arranged on the chain protective cover. The protection level of the driving chain is improved, and the safe operation of the device is ensured.

Furthermore, the stop lever includes a fixed section fixed on the movable arm, a bending section extending from the lower end of the fixed section to the direction away from the movable arm, and a pushing matching section extending downwards from the end of the bending section away from the fixed section and matching with the pushing member in pushing. Avoid shifting block and digging arm to interfere.

Further, in order to avoid the drive chain not to be flexible, be equipped with in the frame of digging arm actuating mechanism and be used for tensioning the nonmetal tensioning piece of drive chain with drive chain tight fit, nonmetal tensioning piece is fixed at the drive chain inboard. And the stable operation of the driving chain is ensured.

Further, for the installation of convenient non-metal tensioning piece, be equipped with L shape fixed plate in the frame, L shape fixed plate includes the riser and fixes the horizontal plate in the frame, non-metal tensioning piece is fixed on the riser. Reduce the volume of nonmetal tensioning piece, make things convenient for the installation of nonmetal tensioning piece.

Further, in order to prevent that the digging arm from moving at the during operation, the lift of conveyer for driving hoist oscilaltion, be equipped with on the fixed arm and move the locking piece that puts in place locking digging arm and apply the elastic component that elasticity kept the locking piece to the digging arm locking to the locking piece when putting in place at the digging arm, the movable assembly is on the gallows about the locking piece, and car primary coat transfer chain still including be used for fixing the handing-over station of transfer chain be in when the hoist descends to the setting position with locking piece top push away the cooperation and remove the unlocking piece of locking piece to the digging arm locking effect. The locking piece guarantees that the digging arm is reliably connected with the fixed arm, and the unlocking piece is fixed on the handing-over station department of transfer chain, simplifies the structure of device.

Further, in order to adapt to more motorcycle types, at least three pairs of telescopic supporting arms are arranged on the lifting appliance, wherein the heights of the supporting parts for supporting the automobile on at least two pairs of telescopic supporting arms are different, so that the lifting appliance can be suitable for motorcycle types with different chassis heights, and the number of the motorcycle types suitable for the lifting appliance is further increased.

In order to achieve the purpose, the utility model discloses the technical scheme of car primary coat transfer chain is: the automobile primary coating conveying line comprises a coating line and an automobile lifting device, wherein the automobile lifting device comprises:

a conveyor for conveying the cars to be coated,

the lifting appliance is driven by a conveyor to lift an automobile and comprises a lifting frame and a telescopic supporting arm arranged at the lower end of the lifting frame and used for supporting the automobile, the telescopic supporting arm comprises a fixed arm fixed on the lifting frame and a movable arm assembled on the fixed arm in a guiding and moving mode along the horizontal direction,

the movable arm driving mechanism: is used for being arranged on the joint station of the conveying line and driving the movable arm to move to enable the telescopic bracket arm to be telescopic,

the movable arm driving mechanism comprises a driving motor and a pushing piece which is driven by the driving motor to reciprocate and is used for driving the movable arm to move, the driving motor drives the pushing piece to reciprocate through a screw rod nut mechanism, and the pushing piece is driven by a nut of the screw rod nut mechanism; or the driving motor drives the pushing piece to reciprocate through the gear rack mechanism, the pushing piece is driven by the rack of the gear rack mechanism, or the driving motor drives the pushing piece to reciprocate through the chain wheel mechanism, the chain wheel mechanism comprises a driving chain wheel and a driving chain, the pushing piece is arranged on the driving chain,

the movable arm is provided with a movable arm matching structure which is used for matching with the pushing piece in a pushing way.

The utility model has the advantages that: the driving motor drives the pushing piece to move back and forth, the telescopic supporting arm is achieved, compared with the current mode of passing through the air cylinder, the telescopic supporting arm can be conveniently adjusted in extension amount through control over the rotation angle of the motor, the telescopic supporting arm can be suitable for automobiles of various different types, and the problem that the application range of a lifting appliance of the current automobile bottom coating conveying line is small due to the fact that the lifting appliance is driven by the air cylinder to stretch is solved.

Furthermore, the movable arm matching structure comprises a stop lever fixed on the horizontal side of the movable arm, and the pushing piece and the stop lever push and cooperate to push the movable arm to move. The stop lever is arranged at the horizontal side of the movable arm, so that the mounting space is sufficient, and the mounting of the driving mechanism of the movable arm is convenient.

Further, the pushing part comprises at least two shifting blocks arranged at intervals in the moving direction of the movable arm, and a blocking rod for the blocking rod to extend into the interval is formed between every two adjacent shifting blocks, so that the blocking rod inserted between the two shifting blocks is driven by the two shifting blocks to extend into the interval to move when the chain rotates forwards and backwards. Through two shifting blocks and the matching of the stop lever, the structure is simple and the installation is convenient.

Furthermore, in order to avoid interference of sundries with the driving chain, a chain protective cover which covers the driving chain is arranged on the rack of the movable arm driving mechanism, and a strip-shaped opening which avoids the pushing piece is arranged on the chain protective cover. The protection level of the driving chain is improved, and the safe operation of the device is ensured.

Furthermore, the stop lever includes a fixed section fixed on the movable arm, a bending section extending from the lower end of the fixed section to the direction away from the movable arm, and a pushing matching section extending downwards from the end of the bending section away from the fixed section and matching with the pushing member in pushing. Avoid shifting block and digging arm to interfere.

Further, in order to avoid the drive chain not to be flexible, be equipped with in the frame of digging arm actuating mechanism and be used for tensioning the nonmetal tensioning piece of drive chain with drive chain tight fit, nonmetal tensioning piece is fixed at the drive chain inboard. And the stable operation of the driving chain is ensured.

Further, for the installation of convenient non-metal tensioning piece, be equipped with L shape fixed plate in the frame, L shape fixed plate includes the riser and fixes the horizontal plate in the frame, non-metal tensioning piece is fixed on the riser. Reduce the volume of nonmetal tensioning piece, make things convenient for the installation of nonmetal tensioning piece.

Further, in order to prevent that the digging arm from moving at the during operation, the lift of conveyer for driving hoist oscilaltion, be equipped with on the fixed arm and move the locking piece that puts in place locking digging arm and apply the elastic component that elasticity kept the locking piece to the digging arm locking to the locking piece when putting in place at the digging arm, the movable assembly is on the gallows about the locking piece, and car primary coat transfer chain still including be used for fixing the handing-over station of transfer chain be in when the hoist descends to the setting position with locking piece top push away the cooperation and remove the unlocking piece of locking piece to the digging arm locking effect. The locking piece guarantees that the digging arm is reliably connected with the fixed arm, and the unlocking piece is fixed in handing-over station department of transfer chain, simplifies the structure of device.

Further, in order to adapt to more motorcycle types, at least three pairs of telescopic supporting arms are arranged on the lifting appliance, wherein the heights of the supporting parts for supporting the automobile on at least two pairs of telescopic supporting arms are different, so that the lifting appliance can be suitable for motorcycle types with different chassis heights, and the number of the motorcycle types suitable for the lifting appliance is further increased.

Drawings

Fig. 1 is a schematic view (only half shown) of a truck crane according to an embodiment of the present invention, when the crane and the elevator are in a transfer station after they are lowered in place;

fig. 2 is a top view of the lifting device and the elevator of the embodiment of the present invention at a transfer station after lowering in place (the car head in the figure represents the position of the car head when the car is lifted, and the car tail represents the position of the car tail when the car is lifted);

FIG. 3 is a left side view of FIG. 2 (only a portion of the telescoping bracket is shown);

fig. 4 is a schematic structural view (only half shown) of a spreader of a specific embodiment of the truck lifting device of the present invention;

fig. 5 is a top view of a spreader according to an embodiment of the present invention (the head of the drawing indicates the position of the head of the car when the car is lifted, and the tail of the car indicates the position of the tail of the car when the car is lifted);

FIG. 6 is a left side view of FIG. 5 (only a portion of the telescoping bracket is shown);

FIG. 7 is a schematic diagram of the construction of a spreader and lift of an embodiment of the truck crane of the present invention;

FIG. 8 is a schematic structural view of a movable arm driving mechanism of an embodiment of the truck crane of the present invention;

FIG. 9 is a schematic view of the structure of FIG. 8 with the cover removed;

figure 10 is a schematic view of the structure of two non-metallic tensioning blocks of figure 9;

figure 11 is a schematic view of the two non-metallic tensioning blocks of figure 9 at another angle;

FIG. 12 is a schematic view of the locking pin, release lever and spring assembly of FIG. 4;

fig. 13 is a schematic view of a telescopic bracket according to an embodiment of the present invention;

FIG. 14 is a left side view of FIG. 13;

fig. 15 is a schematic view of the structure of the movable arm driving mechanism of the truck crane according to the embodiment of the present invention;

fig. 16 is a layout view of the telescopic corbel support part of four telescopic corbels according to an embodiment of the present invention (the working telescopic corbel support part is shaded);

fig. 17 is another layout view of the telescopic corbel support part of the four telescopic corbels according to the embodiment of the present invention (the working telescopic corbel support part is shaded);

in the figure: 1. a spreader; 11. a hanger; 12. a telescopic bracket arm; 13. a fixed arm; 14. a movable arm; 141. a stop lever; 1411. a fixed section; 1412. bending sections; 1413. a pushing matching section; 142. a locking plate; 143. a telescopic supporting arm supporting part; 15. a locking member; 151. a lock pin; 152. a cross bar; 153. an unlocking lever; 16. a spring; 17. a guide rail; 18. an unlocking frame; 19. a positioning sleeve; 2. an elevator; 21. a lifting frame; 22. a riding wheel; 23. a friction wheel; 24. a horizontal movement motor; 3. a movable arm drive mechanism; 31. a frame; 32. a drive motor; 33. a driving wheel; 34. a driven wheel; 35. a drive chain; 36. shifting blocks; 361. a fixed portion; 362. an arc-shaped connecting portion; 37. the stop lever extends into the gap; 38. an L-shaped fixing plate; 381. a vertical plate; 382. a horizontal plate; 3821. fixing the long hole; 39. a non-metal tensioning block; 40. a chain guard; 401. a strip-shaped opening; 402. a bottom case; 403. a cover plate; 5. and a positioning pin.

Detailed Description

The following describes embodiments of the present invention with reference to the accompanying drawings.

The utility model discloses a concrete embodiment of car lifting device, as shown in fig. 1 to fig. 3, car lifting device includes hoist 1 and the conveyer that drives hoist 1 and remove, the conveyer of this embodiment is for the lift 2 that drives hoist 1 oscilaltion, wherein lift 2's structure is prior art, for example can be the four-column lift of the switching section that the authorization notice number is disclosed in CN205060770U, specifically no longer expand the description, wherein hoist 1's structure is similar with the hoist structure that the authorization notice number is disclosed in CN205060770U, introduce the difference below mainly. Of course, in other embodiments, according to specific use requirements, the conveyor and the hanger may also adopt a form disclosed in CN208471355U, at this time, the hanger is driven by the conveying mechanism to move horizontally, and a lift for driving the car to lift is arranged at the transfer station of the conveying line.

In this embodiment, as shown in fig. 1 to 7, the lifting appliance 1 includes a hanger 11 and a telescopic bracket 12 disposed at a lower end of the hanger 11 for supporting the automobile, as shown in fig. 13 and 14, the telescopic bracket 12 includes a fixed arm 13 fixed on the hanger 11 and a movable arm 14 movably assembled on the fixed arm 13 along a direction perpendicular to the hanger 11, the fixed arm 13 is provided with a guide rail, the movable arm 14 is slidably assembled on the guide rail in a guiding manner, and the telescopic bracket is extended and retracted by the movement of the movable arm 14, so as to adapt to different automobile types.

The truck crane further includes a movable arm driving mechanism 3 for fixing at the transfer station of the conveyor line, as shown in fig. 8 and 9, the movable arm driving mechanism 3 being configured to drive the movable arm 14 to move so as to extend and retract the telescopic bracket 12. Specifically, the digging arm actuating mechanism 3 in this embodiment is equipped with driving motor 32 and drives the piece that pushes up that is used for driving digging arm 14 to remove by driving motor 32 including fixing the frame 31 at the handing-over station department of transfer chain on the frame 31, and for convenient control, servo motor is chooseed for use to driving motor 32, and driving motor 32's the vertical setting of output axis, driving motor 32 pass through sprocket mechanism and drive the reciprocating motion of piece that pushes up. The sprocket mechanism comprises a driving wheel 33 fixed with an output shaft of the driving motor 32, a driven wheel 34 rotatably assembled on the frame 31, and a driving chain 35 wound on the driving wheel 33 and the driven wheel 34. The pushing part comprises two shifting blocks 36 fixed on the driving chain 35, and the two shifting blocks 36 are arranged at intervals. The two shifting blocks 36 have the same structure, the shifting block 36 is a U-shaped block fixed on the driving chain 35 and having an opening facing the driving chain 35, the shifting block 36 includes two parallel fixed portions 361 and an arc-shaped connecting portion 362 connecting the two fixed portions 361, one end of the fixed portion 361 far away from the connecting portion is fixed on the driving chain 35, and the end of the fixed portion 361 is provided with a fixing hole fixed with the driving chain 35. The U-shaped block structure enables the shifting block 36 to be connected with the driving chain 35 more firmly.

The movable arm 14 is provided with a stop lever 141, and the stop lever 141 is fixed to the horizontal side of the movable arm 14, and as shown in fig. 15, the lower end of the stop lever 141 extends into the stop lever extending space 37 formed between the two shift blocks 36. When the driving motor 32 rotates, the driving wheel 33 and the driving chain 35 are driven to move, the shifting block 36 fixed on the driving chain 35 follows up, the shifting block 36 is in pushing fit with the stop lever 141, and the telescopic bracket arm 12 extends out or retracts under the action of the shifting block 36 and the stop lever 141. The two shifting blocks 36 can respectively drive the stop rods 141 to move in two opposite directions when the driving chain 35 rotates in the forward and reverse directions, so that the movable arm 14 can reciprocate.

The pushing part in this embodiment is an assembly formed by two shifting blocks 36, in other embodiments, the pushing part may be a shifting fork fixed on the driving chain, the shifting fork has a blocking rod extending groove for the blocking rod to extend into, or the pushing part may also be a fixing plate, and a fitting hole for the blocking rod to extend into is arranged on the fixing plate. The stop lever in this embodiment forms a movable arm matching structure that is arranged on the movable arm and in pushing fit with the pushing piece, and in other embodiments, the movable arm matching structure may also be a groove arranged on the movable arm, for example, a structure that a shifting plate disclosed in the publication No. CN208471355U is matched with a notch portion to drive the sliding leg to slide.

In other embodiments, the number of the shifting blocks may be set as required, for example, three or more than three, and at this time, a blocking rod extending interval for extending the blocking rod is formed between two adjacent shifting blocks.

In this embodiment, as shown in fig. 4, the blocking rod 141 includes a fixed section 1411 fixed on the movable arm 14, a bending section 1412 extending from a lower end of the fixed section 1411 to a direction away from the movable arm 14, and a pushing matching section 1413 extending from an end of the bending section 1412 far from the fixed section 1411 downward and matching with the pushing member in a pushing manner, wherein the bending section 1412 on the blocking rod 141 enables the pushing matching section 1413 to be disposed far from the movable arm 14, so as to provide a sufficient space for the arrangement of the sprocket chain. In other embodiments, the blocking rod can also be a straight rod, and the height of the lower end of the blocking rod is lower than that of the bottom surface of the movable arm for convenient installation.

As shown in fig. 8 to 11, in order to ensure stable matching between the shifting block 36 and the stop lever 141, in this embodiment, an L-shaped fixing plate 38 is disposed on the frame 31, the L-shaped fixing plate 38 includes a vertical plate 381 and a horizontal plate 382 fixed on the frame 31, a non-metal tensioning block 39 for tensioning the driving chain 35 is fixed on the vertical plate 381, and the non-metal tensioning block 39 is fixed on the inner side of the driving chain 35. The plurality of L-shaped fixing plates 38 are provided in this embodiment, the two non-metal tensioning blocks 39 are provided, the two non-metal tensioning blocks 39 are respectively used for tensioning two opposite sections of the driving chain 35 between the driving wheel 33 and the driven wheel 34, each non-metal tensioning block 39 is fixed by three L-shaped fixing plates 38, as shown in fig. 10 and 11, and two adjacent L-shaped fixing plates 38 are respectively fixed with the two non-metal tensioning blocks 39. In other embodiments, the tensioning device for the driving chain can also be a tensioning device for tensioning the chain by adjusting the position of the driven wheel in the prior art; of course, there may be no tensioning device, in which case the stability of the operation of the device may be reduced.

In order to safely and avoid the interference of sundries on the operation of the driving chain 35, the frame 31 is also provided with a chain guard 40, the chain guard 40 covers the driving chain 35, the chain guard 40 is provided with a strip-shaped opening 401 avoiding the pushing piece, and the shifting block 36 extends out of the chain guard 40 through the strip-shaped opening 401. As shown in fig. 8, the chain guard 40 includes a bottom case 402 and a cover 403 fixed on the bottom case 402, and the driven wheel 34 and the L-shaped fixing plate 38 are both disposed on the bottom case 402, wherein the L-shaped fixing plate 38 is fixed on the bottom case 402 by a horizontal plate 382, and the horizontal plate 382 is provided with a fixing slot 3821, which facilitates the adjustment of the position of the L-shaped fixing plate 38. In other embodiments, the non-metallic tensioning block may be directly secured to the base.

In other embodiments, no guard may be provided outside the drive chain. The vertical setting of driving motor 32's output axis in this embodiment, other embodiments, driving motor's output axis can the level setting, and the axis of action wheel and follow driving wheel also level setting, and the setting of shifting block this moment is at drive chain's top.

As shown in fig. 1 and 12, in order to ensure that the movable arm 14 does not move back and forth during the use of the spreader 1, in the present embodiment, the fixed arm 13 is provided with a locking member 15 for locking the movable arm 14 when the movable arm 14 moves to the proper position, and a spring 16 for applying an elastic force to the locking member 15 to keep the locking member 15 locked to the movable arm 14, as shown in fig. 12, the locking member 15 includes a locking pin 151, the movable arm 14 is fixed with a locking plate 142 extending along the moving direction thereof, the locking plate 142 is provided with a plurality of locking holes arranged at intervals along the moving direction of the movable arm 14 and engaged with the locking pin 151, and after the movable arm 14 moves to the proper position, the locking pin 151 is inserted into the locking hole, and the movable arm 14 cannot move relative to. A cross bar 152 is fixed at the top end of the lock pin 151, an unlocking rod 153 parallel to the lock pin 151 is further fixed on the cross bar 152, the length of the downward extension of the unlocking rod 153 is greater than that of the lock pin 151, an unlocking frame 18 used for being in pushing fit with the unlocking rod 153 correspondingly to enable the unlocking rod 153 to move upwards is fixed at a transfer station of the conveying line, as shown in fig. 1, the unlocking frame 18 comprises a vertical rod 181 and a triangular frame 182 arranged at the upper end of the vertical rod, and the top surface of the triangular frame 182 is used for being in pushing fit with the unlocking rod 153. The unlocking frame 18 pushes the unlocking rod 153 to move the unlocking rod 153 and the lock pin 151 upwards, so that the lock pin 151 is disengaged from the lock hole, and the movable arm 14 is unlocked. The spring 16 is press-fitted between the lock release lever 153 and the fixed arm 13, and ensures the locking effect of the lock pin 151 on the movable arm 14.

After the lifting appliance 1 descends to a set position, the unlocking frame 18 at the position of the transfer station of the conveying line pushes the unlocking rod 153 to unlock the movable arm 14, meanwhile, the stop rod 141 on the movable arm 14 extends into the stop rods of the two shifting blocks 36 to extend into the interval 37, the driving motor 32 is started, the movable arm 14 is driven to move through the shifting blocks 36 until the movable arm moves to the set position, the telescopic supporting arm is stretched, then the lifting appliance 1 lifts the automobile, in the lifting process of the lifting appliance 1, the lock pin 151 is inserted into another lock hole again, each hole corresponds to the position of one automobile type, and locking of the movable arm 14 is completed. In order to control the movement amount of the movable arm 14, travel switches corresponding to the vehicle type are arranged on the fixed arm 13, the number of the travel switches is set according to needs, after the movable arm 14 moves in place, the travel switches are triggered, a trigger signal is transmitted to the motor controller, and the motor is controlled to stop rotating. In other embodiments, there may be no locking member between the movable arm and the fixed arm, and the movable arm and the fixed arm may be maintained in relative positions by means of friction force therebetween. In other embodiments, a motor with an encoder may be provided, and the number of rotations of the motor may be controlled by a preset number of rotations of the motor, thereby controlling the amount of movement of the movable arm. In other embodiments, the travel switch may be disposed on the frame, and the travel switch may be replaced by a distance measuring sensor.

In this embodiment, in order to further increase the application range of the vehicle, four pairs of the telescopic booms 12 are provided, wherein the heights of the three pairs of telescopic booms supporting portions 143 are different, so as to be suitable for vehicles with different chassis heights. When the lifting device is used, two pairs of the four pairs of telescopic supporting arms 12 are selected to support an automobile to be lifted. As shown in fig. 16 and 17, different telescopic booms are selected for lifting according to different sizes of the automobile chassis. Of course, in other embodiments, the height and the telescopic length of the supporting part of the telescopic bracket arm can be adjusted according to different models of vehicles, for example, the telescopic length of the telescopic bracket arm can be increased or decreased appropriately.

The handing-over station department of transfer chain is equipped with locating pin 5 with hoist 1 location, the last correspondence of hoist 1 is equipped with and fixes a position 19 with locating pin 5 complex, lift 2 includes crane 21 and sets up the translation actuating mechanism who drives hoist 1 back-and-forth movement on crane 21, translation actuating mechanism is including setting up riding wheel 22 on crane 21 and setting up the friction pulley 23 at riding wheel 22 upside, form the interval between riding wheel 22 and the friction pulley 23, there is guide rail 17 left and right sides on hoist 1, when hoist 1 is on lift 2, guide rail 17 is between riding wheel 22 and friction pulley 23, friction pulley 23 is connected with horizontal motion motor 24, horizontal motion motor 24 drives friction pulley 23 and rotates, friction pulley 23 drives guide rail 17 back-and-forth movement, make hoist 1 leave lift 2.

The lifting device comprises two lifting machines 2 and two movable arm driving mechanisms 3, wherein one lifting machine is arranged at an upper workpiece station of the coating line, the other lifting machine is arranged at a lower workpiece station of the coating line, the lifting tools 1 are arranged in a plurality, and the specific number is set according to needs. The two sets of movable arm driving mechanisms 3 have the same structural principle, one is used for extending the telescopic bracket arm 12, and the other is used for retracting the telescopic bracket arm 12, and the detailed description is not provided. The layout of the coating line and the overhead hoist is prior art, for example the coating line may be the working section of the conveyor line system disclosed in CN205060770U, and the overhead hoist corresponds to the transfer section and the return section thereof. In other embodiments, the overhead hoist may include only one elevator and a set of movable arm drive mechanisms.

When the automobile lifting device in the embodiment is used, the lifting appliance 1 is carried by the elevator 2 to descend to the right position, the lifting appliance 1 is positioned by the positioning pin 5 at the upper part connecting station of the conveying line, an automobile body needing to be subjected to a base coating process is conveyed to a station below the elevator 2 by a ground skid and positioned, after the automobile body and the skid are unlocked, the driving motor 32 driving the driving chain 35 to operate is started to extend the telescopic supporting arm 12, the bearing part of the movable arm 14 moves to the corresponding lower part of the automobile body, the elevator 2 ascends to the right position, the positioning pin 5 releases the positioning of the lifting appliance 1, at the moment, the lifting appliance 1 carrying the automobile body is quickly conveyed to an air rolling machine of a coating line by the elevator 2, the air rolling machine operates at a required process speed, and the lifting appliance 2 receives the returned lifting appliance 1 and then descends to a low position to convey the next automobile body. After a car is transported to an aerial roller machine of a coating line by a lifting appliance 1 of a car lifting and transporting device to finish coating, the aerial roller machine conveys the lifting appliance 1 carrying a car body to a lower part transfer station, namely a lifting machine 2 at an outlet, the lifting appliance 1 is transported to a low position from a high position by the lifting machine 2 at the outlet, the car body falls on a skid positioned below the car body, a movable arm driving mechanism 3 arranged at the lower part station of the coating line drives a movable arm 14 of the lifting appliance 1 to retract, the coating and transporting of the car body are finished, after the skid and the car body are transported away by a ground skid transporting system, the lifting appliance 2 at the lower part station of the coating line rises to a proper position, the empty lifting appliance 1 is transported to a high position return line, and then the lifting appliance 1 is transported to the lifting appliance 2 at the upper part station of the coating line by the roller machine of the return line, so that a cycle is finished.

In the embodiment, the driving motor drives the pushing piece to move back and forth through the gear rack mechanism, in other embodiments, the driving motor can drive the pushing piece to move back and forth through the screw rod nut mechanism, and the pushing piece is driven by the nut of the screw rod nut mechanism; or the pushing piece is driven to reciprocate by the gear rack mechanism and is driven by the rack of the gear rack mechanism.

The utility model discloses a concrete embodiment of car primary coat transfer chain, car primary coat transfer chain include coating line, truck lifting device, wherein the structure of truck lifting device and the concrete embodiment of above-mentioned truck lifting device in the structure the same, no longer describe. The coating line in this embodiment is a conventional art, and will not be described, and may be, for example, a work section of a conveyor line system disclosed in the publication No. CN 205060770U.

Claims (10)

1. A truck haul apparatus, comprising:

a conveyor for conveying the cars to be coated,

the lifting appliance is driven by a conveyor to lift an automobile and comprises a lifting frame and a telescopic supporting arm arranged at the lower end of the lifting frame and used for supporting the automobile, the telescopic supporting arm comprises a fixed arm fixed on the lifting frame and a movable arm assembled on the fixed arm in a guiding and moving mode along the horizontal direction,

the movable arm driving mechanism: is used for being arranged at the workpiece connecting position of the conveying line and driving the movable arm to move to enable the telescopic bracket arm to be telescopic,

the device is characterized in that the movable arm driving mechanism comprises a driving motor and a pushing piece which is driven by the driving motor to reciprocate and used for driving the movable arm to move, the driving motor drives the pushing piece to reciprocate through a screw nut mechanism, and the pushing piece is driven by a nut of the screw nut mechanism; or the driving motor drives the pushing piece to reciprocate through the gear rack mechanism, the pushing piece is driven by the rack of the gear rack mechanism, or the driving motor drives the pushing piece to reciprocate through the chain wheel mechanism, the chain wheel mechanism comprises a driving chain wheel and a driving chain, the pushing piece is arranged on the driving chain,

the movable arm is provided with a movable arm matching structure which is used for matching with the pushing piece in a pushing way.

2. The truck haul arrangement of claim 1, wherein the movable arm engagement structure comprises a stop bar fixed to a horizontal side of the movable arm, and the push member is in pushing engagement with the stop bar to move the movable arm.

3. The truck lifting device according to claim 2, wherein the pushing member comprises at least two shifting blocks spaced apart from each other in the moving direction of the movable arm, and a stop rod insertion space for inserting the stop rod is formed between two adjacent shifting blocks, so that the stop rod inserted into the stop rod insertion space between the two shifting blocks is moved by the two shifting blocks when the chain rotates in the forward and reverse directions.

4. A truck haulage apparatus according to claim 2 or 3, wherein a chain guard is provided on the frame of the boom drive mechanism to cover the drive chain, and the chain guard is provided with a strip-shaped opening to avoid the ejector.

5. The truck lifting device according to claim 2 or 3, wherein the stop lever comprises a fixed section fixed on the movable arm, a bent section extending from a lower end of the fixed section in a direction away from the movable arm, and a pushing engagement section extending from an end of the bent section away from the fixed section and downwardly engaging with the pushing member.

6. A truck hauler according to claim 1, 2 or 3, wherein the frame of the boom drive mechanism is provided with a non-metallic tensioning block which is in close fit with the drive chain for tensioning the drive chain, the non-metallic tensioning block being fixed inside the drive chain.

7. The truck crane assembly of claim 6, wherein the frame is provided with an L-shaped fixing plate, the L-shaped fixing plate comprises a vertical plate and a horizontal plate fixed on the frame, and the non-metal tensioning block is fixed on the vertical plate.

8. The truck lifting device according to claim 1, 2 or 3, wherein the conveyor is a lifter for lifting the lifting tool up and down, the fixed arm is provided with a locking member for locking the movable arm when the movable arm moves to a proper position and an elastic member for applying an elastic force to the locking member to keep the locking member locked to the movable arm, the locking member is movably assembled on the hanger up and down, and the truck lifting device further comprises an unlocking member for being fixed at a transfer station of the conveying line and being in pushing cooperation with the locking member to release the locking effect of the locking member on the movable arm when the lifting tool descends to a set position.

9. A truck lifting device according to claim 1, 2 or 3, wherein the spreader is provided with at least three pairs of telescopic booms, wherein at least two pairs of telescopic booms are provided with different heights of the supporting portions for supporting the truck.

10. A vehicle primer coating conveyor line comprising a coating line and a car lifting device, wherein the car lifting device is according to any one of claims 1 to 9.

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