CN110921518B

CN110921518B - Automobile assembly transportation line

Info

Publication number: CN110921518B
Application number: CN201911055944.8A
Authority: CN
Inventors: 曹庆; 邢阳
Original assignee: Kunshan Qixun Mechanical Equipment Manufacturing Co ltd
Current assignee: Kunshan Qixun Mechanical Equipment Manufacturing Co ltd
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2020-10-30
Anticipated expiration: 2039-10-31
Also published as: CN110921518A

Abstract

The invention relates to an automobile assembly transportation line, which comprises a base frame, a bearing seat, a support frame and a driving piece, wherein the bearing seat is connected in the base frame in a sliding manner and moves along the length direction of the base frame; the supporting frame comprises two supporting rods which are symmetrically distributed about the bearing seat, two ends of each supporting rod are vertically provided with vertical rods, the side wall of each vertical rod is provided with a sliding groove, an L-shaped bearing rod is connected in the sliding groove in a sliding mode, the vertical rods are provided with lifting pieces used for driving the bearing rods to move along the height direction of the vertical rods, two opposite sides of the bearing seat are symmetrically provided with a plurality of guide pillars, one end of each guide pillar penetrates through the supporting rod, the bearing seat is provided with two first screw rods, the two supporting rods are respectively provided with a guide sleeve through which the first screw rods penetrate, and the two sides of the guide sleeves of the first screw rods are respectively in threaded; the driving piece comprises two winches arranged on the base frame and a steel cable wound on the two winch rollers. The invention has the effect of improving the flexibility of the transport line.

Description

Automobile assembly transportation line

Technical Field

The invention relates to the technical field of automobile manufacturing and assembling, in particular to an automobile assembling and transporting line.

Background

In the automobile assembling process, an outer decoration piece in a compartment is generally installed on the ground; then the vehicle body is lifted and the chassis at the lower part is installed. And finally, the upper part in the ground installation cabin is descended. Thus, existing automotive assembly lines raise the body in a fixed position, then the body is moved forward while maintaining that height, and the body is lowered to the ground in a fixed position after assembly at each station.

However, the width of the bracket used for bearing the automobile body on the conveying line is usually fixed and cannot be adjusted according to the actual width of the automobile body, and when the specification of an assembled automobile is changed, the bracket can only be replaced, so that the process is complicated, and the flexibility of the whole conveying line is poor.

Disclosure of Invention

The invention aims to provide an automobile assembly transportation line, which has the advantages that: the flexibility of the transport line is improved.

The technical purpose of the invention is realized by the following technical scheme: an automobile assembly transportation line comprises a base frame, a bearing seat, a support frame and a driving piece, wherein the bearing seat is connected in the base frame in a sliding manner and moves along the length direction of the base frame;

the supporting frame comprises two supporting rods which are symmetrically distributed about a bearing seat, two ends of each supporting rod are vertically provided with vertical rods, the side wall of each vertical rod is provided with a sliding groove, an L-shaped bearing rod is connected in the sliding groove in a sliding manner, the vertical rods are provided with lifting pieces used for driving the bearing rods to move along the height direction of the vertical rods, two opposite sides of the bearing seat are symmetrically provided with a plurality of guide pillars, one end of each guide pillar penetrates through the supporting rod, the bearing seat is provided with two first screw rods, the two supporting rods are provided with guide sleeves for the first screw rods to penetrate through, and the two sides of the guide sleeves of the first screw rods are in threaded connection with adjusting nuts;

the driving piece comprises two winches arranged on the base frame and steel cables wound on two winch rollers, and the two steel cables are connected with the bearing seat;

two base stations are arranged on the ground and correspond to the guide wheels at the two ends of the base frame respectively.

By adopting the technical scheme, during work, an operator supports the car body on the base station in advance, then two winches are started, one winch winds the steel cable, the other winch releases the steel cable to drive the bearing seat to move forwards, when the lower end of the bearing rod moves to the position below the car body, the winches are suspended, the lifting piece controls the bearing rod to move upwards, the bearing rod supports the car body and drives the car body to be separated from the base station, then the winches are started again, and the bearing seat continues to move forwards; after the assembly of the vehicle body is finished, the bearing seat drives the assembled vehicle body to move to the next base station, and the lifting piece controls the bearing rod to descend so that the vehicle body is supported on the base station; when the width of the vehicle body is changed, an operator can move the two support rods to be close to or far away from each other only by unscrewing the adjusting nut, so that the distance between the two bearing rods is adjusted, the operation is simple and convenient, the application range of the support frame is enlarged, and the flexibility of a conveying line is improved; in addition, the guide pillar and the first screw share the gravity of the support frame, and the abrasion between the guide pillar and the support rod and between the first screw and the guide sleeve is reduced.

The invention is further configured to: the lifting piece comprises a servo motor and a second screw rod, the second screw rod is rotatably connected in the sliding groove, a sliding block is arranged on the side wall of the bearing rod, the second screw rod penetrates through the sliding block and is in threaded connection with the sliding block, the servo motor is installed in the sliding groove, and a motor shaft of the servo motor is connected with the screw rod.

By adopting the technical scheme, the servo motor is started, the motor shaft of the servo motor drives the second screw rod to rotate, the slide block drives the bearing rod to move upwards or downwards under the driving of the second screw rod, the structure is simple, and the transmission is stable.

The invention is further configured to: the device is characterized in that a horizontal support plate is arranged on the vertical rod, a guide wheel group is arranged on the support plate, a traction rope is wound on the guide wheel group, one end of the traction rope is connected with the bearing rod, and the other end of the traction rope is connected with a balancing weight.

Through adopting above-mentioned technical scheme, the haulage rope has exerted a pulling force effect to the bearing rod under the action of gravity of balancing weight, because this pulling force direction is opposite with the gravity direction of automobile body, therefore has alleviateed the load that second screw rod drive bearing rod upwards or born downwards, has played the guard action to the second screw rod.

The invention is further configured to: the bottom surface of the support plate is provided with a storage barrel for placing the counterweight block, and the storage barrel is provided with a through groove for moving the traction rope.

Through adopting above-mentioned technical scheme, put a thing section of thick bamboo and reduced the balancing weight and removed the rocking of in-process at the bearing seat, also protected the safety of personnel around the supply line simultaneously.

The invention is further configured to: a jack is arranged in the object placing barrel.

Through adopting above-mentioned technical scheme, when the transportation line was in the unoperated state, the operator utilized the jack to jack up the balancing weight, cancelled its pulling force effect to bearing rod applys to make the second screw rod keep at natural state.

The invention is further configured to: the ground is paved with a guide rail for the base station to slide, the moving direction of the base station is parallel to the moving direction of the bearing seat, the front ends of the bearing seat and the base station are respectively provided with a connecting rod and a pushing cylinder, and a piston rod of the pushing cylinder is connected with a push plate.

Through adopting above-mentioned technical scheme, when bearing the seat when advancing in-process connecting rod and push pedal inconsistent, the push pedal drives the base station under the promotion of connecting rod and advances in step, and the base station keeps relative quiescent condition with bearing the seat this moment, and the hoist engine need not to suspend alright carry out the promotion of automobile body or transfer, has shortened time cycle, does benefit to the continuity that improves assembly work.

The invention is further configured to: the push plate is connected with a backing plate through a compression spring.

Through adopting above-mentioned technical scheme, when connecting rod and backing plate conflict, compression spring has played the effect of elastic buffer, has increased the base station at connecting rod and the instant stationarity of backing plate conflict.

The invention is further configured to: and a limiting column with one end penetrating through the push plate is arranged on the side wall of the base plate.

Through adopting above-mentioned technical scheme, spacing post has played the guide effect to the backing plate, has restricted the skew of backing plate.

The invention is further configured to: a baffle is arranged on the ground, and an extension spring is connected between the baffle and the base station.

Through adopting above-mentioned technical scheme, when the base station gos forward, extension spring is elongated gradually and produces elastic deformation, when the top pushes away the cylinder and drives the push pedal and move down and make backing plate and connecting rod separation, the base station automatic re-setting under extension spring's elastic tension effect, and is convenient nimble.

The invention is further configured to: bear the weight of and be equipped with a plurality of stiffeners that distribute along its length direction on the seat, each the both ends of stiffener all rotate and are connected with the gyro wheel, be equipped with the track that supplies the gyro wheel to remove in the bed frame.

By adopting the technical scheme, when the bearing seat moves, the roller rolls along the track, the friction resistance is relatively small, and the load of the winch is favorably reduced.

In conclusion, the beneficial technical effects of the invention are as follows:

1. the width of the support frame can be freely adjusted according to the actual width of the vehicle body, so that the application range of the support frame is enlarged, and the flexibility of a transport line is improved;

2. the tension applied to the bearing rod by the balancing weight reduces the load borne by the second screw rod when the bearing rod is driven to move, and ensures the strength of the second screw rod;

3. the car body is lifted or lowered under the state that the base station and the bearing seat move synchronously, so that the time required by the suspension of the winch is saved, and the continuous operation of a transportation line is facilitated.

Drawings

Fig. 1 is a schematic structural diagram of the present embodiment.

Fig. 2 is a schematic structural diagram of the support frame according to the embodiment.

Fig. 3 is a schematic structural diagram for embodying the lifting member in the present embodiment.

Fig. 4 is a schematic structural diagram for embodying the base and the guide rail in the present embodiment.

Fig. 5 is a schematic structural diagram for embodying the link of the present embodiment.

Fig. 6 is an enlarged view at a in fig. 5.

In the figure, 1, a base frame; 11. a bearing seat; 12. a drive member; 121. a winch; 122. a wire rope; 13. a base station; 2. a support frame; 21. a support bar; 22. erecting a rod; 221. a chute; 23. a support rod; 24. a guide post; 25. a first screw; 26. a guide sleeve; 27. adjusting the nut; 3. a lifting member; 31. a servo motor; 32. a second screw; 33. a slider; 34. a support plate; 35. a guide wheel group; 36. a hauling rope; 361. a balancing weight; 37. a storage barrel; 371. a through groove; 38. a jack; 4. a guide rail; 41. a connecting rod; 42. a pushing cylinder; 43. pushing the plate; 44. a compression spring; 45. a base plate; 46. a limiting column; 47. a baffle plate; 48. an extension spring; 5. a reinforcing bar; 51. a roller; 52. a track.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b): an automobile assembly transportation line, as shown in fig. 1 and fig. 2, includes a base frame 1, a carrying seat 11 slidably connected in the base frame 1, a supporting frame 2 connected to the carrying seat 11, and a driving member 12 for driving the carrying seat 11 to move along the length direction of the base frame 1.

As shown in fig. 2 and 3, the supporting frame 2 includes two supporting rods 21 symmetrically distributed about the supporting seat 11, the supporting rods 21 are parallel to the supporting seat 11, two ends of each supporting rod 21 are vertically provided with vertical rods 22, a sliding groove 221 extending along the height direction of each vertical rod 22 is formed on the side wall of each vertical rod 22, an L-shaped supporting rod 23 is connected in the sliding groove 221 in a sliding manner, the supporting rods 23 on the two supporting rods 21 are symmetrically distributed, and the vertical rods 22 are provided with lifting members 3 for driving the supporting rods 23 to move along the height direction of the vertical rods 22; the two opposite sides of the bearing seat 11 are respectively provided with a plurality of guide posts 24 and screws which are vertically distributed with the bearing seat 11, wherein the guide posts 24 are equidistantly distributed along the length direction of the bearing seat 11 and symmetrically distributed about the bearing seat 11, and one end of each guide post 24, which is far away from the bearing seat 11, penetrates through the corresponding support rod 21; the two support rods 21 are respectively provided with a guide sleeve 26, the two guide sleeves 26 respectively correspond to the two first screws 25, the first screws 25 penetrate through the guide sleeves 26, the first screws 25 are respectively in threaded connection with adjusting nuts 27 on two sides of the guide sleeves 26, and the adjusting nuts 27 are abutted against the guide sleeves 26 to fix the guide sleeves 26.

As shown in fig. 3, the lifting member 3 includes a servo motor 31 and a second screw rod 32, the second screw rod 32 is rotatably connected in the sliding groove 221, a sliding block 33 is disposed on the side wall of the support rod 23, the second screw rod 32 passes through the sliding block 33 and is in threaded connection with the sliding block 33, the servo motor 31 is installed in the sliding groove 221 and located above the second screw rod 32, and a motor shaft of the servo motor 31 is connected with the screw rod. The servo motor 31 is started to drive the second screw rod 32 to rotate, and the slide block 33 drives the supporting rod 23 to move upwards or downwards under the drive of the second screw rod 32.

As shown in fig. 5, a plurality of reinforcing rods 5 are disposed on the bearing seat 11 and are equidistantly distributed along the length direction of the bearing seat, each reinforcing rod 5 is perpendicular to the bearing seat 11, rollers 51 are rotatably connected to both ends of each reinforcing rod 5, and a track 52 for the rollers 51 to move is disposed in the base frame 1.

As shown in fig. 4, the driving member 12 includes two winches 121 installed at two ends of the base frame 1 along the length direction, the rollers of the two winches 121 are wound with steel cables 122, and the two steel cables 122 are connected with the load-bearing seat 11; in operation, the two winches 121 are simultaneously started, wherein the drum of one of the winches 121 winds the cable 122, and the drum of the other of the winches 121 correspondingly releases the cable 122, so as to drive the load-bearing seat 11 to move.

As shown in fig. 1, two bases 13 are arranged on the ground, the two bases 13 respectively correspond to two ends of the base frame 1 along the length direction, the width of the base 13 is smaller than the width of the vehicle body, the length of the base 13 is smaller than the length of the vehicle body, the distance between the vertical sections of the two supporting rods 23 is larger than the width of the vehicle body, the width between the horizontal sections is smaller than the width of the vehicle body, meanwhile, one base 13 is marked as a, the other base 13 is marked as B, and the bearing seat 11 moves from the position a to the position B; when the bearing seat 11 is at the initial position, it is close to the A base 13, and the lower end of the bearing rod 23 is lower than the vehicle body.

And (3) transportation process: an operator places the vehicle body on the base platform A13 in advance, starts the two winches 121 to drive the bearing seat 11 to move forward, when the horizontal section of each bearing rod 23 moves to the position below the vehicle body, the winches 121 are suspended, the servo motor 31 is started to drive the bearing rods 23 to move upwards, the bearing rods 23 move upwards and support the vehicle body to be separated from the base platform 13, and the lifting of the vehicle body is completed; the winch 121 is restarted, the vehicle body moves towards the B base station 13 under the driving of the support frame 2, and in the process, when the vehicle body moves to a designated station, the winch 121 is suspended, and a worker assembles the vehicle body; when the automobile body assembly finishes and moves to B base station 13 top, hoist engine 121 pauses, and servo motor 31 reverses, and drive bearing rod 23 drives the automobile body and descends, and the horizontal segment that supports up to the automobile body and bearing rod 23 on B base station 13 moves to the automobile body below, realizes transferring of automobile body, and convenient and fast need not the manual work and carries, and intensity of labour reduces, does benefit to and saves the cost of labor.

As shown in fig. 5, when the width of the vehicle body changes, an operator firstly screws the adjusting nut 27 to separate from the guide sleeve 26, then moves the support rod 21 according to the actual width of the vehicle body, adjusts the distance between the two support rods 23, and then screws the adjusting nut 27 to clamp the guide sleeve 26 after the adjustment is finished, so that the vehicle-mounted support frame is simple and convenient, the whole support frame 2 does not need to be replaced, time and labor are saved, the application range of the support frame 2 is widened, and the flexibility of a transportation line is improved.

As shown in fig. 3, each vertical rod 22 is provided with a horizontal support plate 34, the support plate 34 is provided with a guide wheel set 35, the arrangement direction of each guide wheel in the guide wheel set 35 is perpendicular to the height direction of the vertical rod 22, a traction rope 36 is wound on the guide wheel set 35, one end of the traction rope 36 is downwards connected with the support rod 23, the other end of the traction rope is connected with four counter weights 361, and the weight of each counter weight 361 is one fourth of the self weight of the vehicle body; the bottom surface of the support plate 34 is provided with a storage barrel 37 for placing the weight 361 so as to reduce the swing amplitude of the weight 361, the storage barrel 37 is provided with a through groove 371 for the traction rope 36 to move, and a jack 38 is further arranged in the storage barrel 37.

As shown in fig. 3, when the supporting rod 23 supports the vehicle body, the top rod of the jack 38 is separated from the weight 361, and the weight 361 exerts an upward pulling force on the supporting rod 23 under the action of gravity, because the pulling force is opposite to the gravity direction of the vehicle body, and the gravity of the four weights 361 is equal to the gravity of the vehicle body, the pulling force is balanced with the gravity of the vehicle body, and the load applied when the supporting rod 23 is driven by the second screw 32 to move is reduced. When the transportation line is in the state of waiting for work, the support frame 2 is empty, and the operator utilizes the jack 38 to jack up the balancing weight 361, removes the pulling force of the balancing weight 361 to the supporting rod 23, so that the second screw rod 32 is in the normal unstressed state, and protects the second screw rod 32.

As shown in fig. 5 and 6, two sections of guide rails 4 extending along the moving direction of the bearing seat 11 are laid on the ground, two base platforms 13 are respectively connected to the two sections of guide rails 4 in a sliding manner, the moving direction of the base platforms 13 is parallel to the moving direction of the bearing seat 11, the advancing direction of the bearing seat 11 is taken as a reference, the front ends of the bearing seat 11 and the base platforms 13 are respectively provided with a vertical connecting rod 41 and a pushing cylinder 42, a piston rod of the pushing cylinder 42 is connected with a push plate 43, one end of the push plate 43 far away from the pushing cylinder 42 is connected with a backing plate 45 through a compression spring 44, the side wall of the backing plate 45 is provided with a limit column 46, one end of which passes; a baffle plate 47 is further provided on the ground, and a tension spring 48 (see fig. 4) is connected between the baffle plate 47 and the base 13.

As shown in fig. 5 and 6, when the vehicle body is placed on the base 13 and the pushing cylinder 42 is in the initial state, the pad 45 is higher than the vehicle body, the lower end of the connecting rod 41 is distributed opposite to the pad 45, when the load-bearing seat 11 moves forward until the connecting rod 41 abuts against the pad 45, the pad 45 drives the base 13 and the load-bearing seat 11 to move synchronously under the pushing of the connecting rod 41 along with the continuous movement of the load-bearing seat 11, the tension spring 48 is gradually stretched to generate elastic deformation, at this time, the supporting frames 2 of the base 13 are kept in a relatively static state, and the horizontal section of the supporting rod 23 is located below the vehicle body, so that the supporting frame 2 can directly lift the vehicle body; when the vehicle body is separated from the base platform 13, the pushing cylinder 42 drives the pushing plate 43 to descend, so that the backing plate 45 is separated from the connecting rod 41, the bearing seat 11 continues to advance after separation, and the base platform 13 automatically moves back under the action of the elastic tension of the extension spring 48. When transferring the automobile body, similar with above-mentioned step, 2 synchronous movement of support frame are followed earlier to base station 13, and the automobile body is located base station 13 top, and the direct decline of bearing pole 23 supports the automobile body on base station 13, and convenient and fast need not repeated pause, starts hoist engine 121, has both improved smoothness, the continuity of transportation line when the transportation, has reduced time cycle again.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. An automobile assembly transportation line, its characterized in that: comprises a base frame (1), a bearing seat (11) which is connected in the base frame (1) in a sliding way and moves along the length direction of the base frame (1), a supporting frame (2) connected on the bearing seat (11) and a driving piece (12) for driving the bearing seat (11) to move;

the supporting frame (2) comprises two supporting rods (21) which are symmetrically distributed about the bearing seat (11), two ends of each supporting rod (21) are respectively and vertically provided with a vertical rod (22), the side wall of each vertical rod (22) is provided with a sliding groove (221), the sliding grooves (221) are internally and respectively connected with an L-shaped supporting rod (23) in a sliding way, the upright rod (22) is provided with a lifting piece (3) for driving the supporting rod (23) to move along the height direction of the upright rod (22), a plurality of guide posts (24) are symmetrically arranged on two opposite sides of the bearing seat (11), one end of the guide post (24) penetrates through the support rod (21), two first screw rods (25) are arranged on the bearing seat (11), guide sleeves (26) for the first screw rods (25) to penetrate through are respectively arranged on the two support rods (21), the first screw (25) is in threaded connection with adjusting nuts (27) on both sides of the guide sleeve (26);

the driving piece (12) comprises two winches (121) arranged on the base frame (1) and a steel cable (122) wound on rollers of the two winches (121), and the two steel cables (122) are connected with the bearing seat (11);

two base stations (13) are arranged on the ground, and the two base stations (13) respectively correspond to the two ends of the base frame (1) along the length direction;

the lifting piece (3) comprises a servo motor (31) and a second screw rod (32), the second screw rod (32) is rotatably connected in the sliding groove (221), a sliding block (33) is arranged on the side wall of the bearing rod (23), the second screw rod (32) penetrates through the sliding block (33) and is in threaded connection with the sliding block (33), the servo motor (31) is installed in the sliding groove (221), and a motor shaft of the servo motor (31) is connected with the second screw rod (32);

the vertical rod (22) is provided with a horizontal support plate (34), the support plate (34) is provided with a guide wheel set (35), a traction rope (36) is wound on the guide wheel set (35), one end of the traction rope (36) is connected with the bearing rod (23), and the other end of the traction rope is connected with a balancing weight (361).

2. The automotive assembly line of claim 1, wherein: the bottom surface of the support plate (34) is provided with a storage barrel (37) for placing the weight distribution block (361), and the storage barrel (37) is provided with a through groove (371) for moving the traction rope (36).

3. The automotive assembly line of claim 2, wherein: a jack (38) is arranged in the storage barrel (37).

4. The automotive assembly line of claim 1, wherein: the ground is paved with a guide rail (4) for the base station (13) to slide, the moving direction of the base station (13) is parallel to the moving direction of the bearing seat (11), the front end of the bearing seat (11) is provided with a connecting rod (41), the front end of the base station (13) is provided with a pushing cylinder (42), and the piston rod of the pushing cylinder (42) is connected with a push plate (43).

5. The car assembly line of claim 4, wherein: the push plate (43) is connected with a backing plate (45) through a compression spring (44).

6. The automotive assembly line of claim 5, wherein: and a limiting column (46) with one end penetrating through the push plate (43) is arranged on the side wall of the backing plate (45).

7. The car assembly line of claim 6, wherein: a baffle plate (47) is arranged on the ground, and an extension spring (48) is connected between the baffle plate (47) and the base station (13).

8. The automotive assembly line of claim 1, wherein: bear and be equipped with a plurality of stiffeners (5) that distribute along its length direction on the seat (11), each the both ends of stiffener (5) all rotate and are connected with gyro wheel (51), be equipped with in bed frame (1) and supply track (52) that gyro wheel (51) removed.