CN111674860B

CN111674860B - Automobile crankshaft transfer device with anti-collision function

Info

Publication number: CN111674860B
Application number: CN202010460449.1A
Authority: CN
Inventors: 曾超峰; 刘志峰; 张鹏飞; 黎镇源
Original assignee: Guangdong Original Point Intelligent Technology Co Ltd
Current assignee: Guangdong Original Point Intelligent Technology Co Ltd
Priority date: 2020-05-27
Filing date: 2020-05-27
Publication date: 2022-08-26
Anticipated expiration: 2040-05-27
Also published as: CN111674860A

Abstract

The invention discloses an automobile crankshaft transfer device with an anti-collision function, which comprises a rack, a guide rail arranged at the top of the rack, a transfer frame slidably arranged on the guide rail, a tray arranged on the transfer frame, a driving motor and a control module, wherein the output end of the driving motor is provided with a torque limiter, the torque limiter is in transmission connection with the transfer frame through a transmission mechanism, the transmission mechanism comprises a driving wheel and a driven wheel which are arranged on the torque limiter, and a flexible annular transmission part wound on the driving wheel and the driven wheel, and the transfer frame is fixedly connected with the flexible annular transmission part through a connecting part. The automobile crankshaft transferring device is used for connecting the first carrying device and the second carrying device, when the transferring frame collides with a pedestrian, the driving wheel and the torque limiter slip, so that the transferring frame stops moving immediately, the pedestrian cannot be injured, and the transferring frame is prevented from causing secondary injury to the pedestrian.

Description

Automobile crankshaft transfer device with anti-collision function

Technical Field

The invention relates to the field of automobile manufacturing, in particular to an automobile crankshaft transfer device with an anti-collision function.

Background

With the improvement of living standard of people and the convenience of traffic roads, the market demand of automobiles is increasing day by day, automobile manufacturers gradually reform towards intelligent production direction in order to better improve productivity and save labor force.

Automobile crankshafts are important parts of automobile engines, automobile crankshaft finished products which are just produced cannot be directly loaded because the automobile crankshaft finished products are not subjected to quality inspection, the automobile crankshafts are generally conveyed to a placing rack through an automatic conveying line to be stored, and the automobile crankshafts are assembled after being qualified to be inspected. The automatic conveying line comprises a feeding robot, a conveying device, a crankshaft position transfer device, a blanking robot and a crankshaft storage rack, wherein the feeding robot clamps and places automobile crankshaft finished products on the conveying device, the conveying device conveys the automobile crankshaft finished products forwards, then the crankshaft position transfer device transfers cranks on the conveying device to a robot blanking station, and finally the automobile crankshaft finished products are placed on the crankshaft storage rack through a blanking manipulator clamp.

It is now planned to provide two handling devices, which have the following technical advantages: 1. the two carrying devices can carry two automobile crankshafts of different models respectively, mixed carrying 2 is realized, the two carrying devices can carry crankshafts of the same model in a centralized manner, and the carrying speed is increased; in addition, the area between the two conveying devices is a pedestrian path, and the vehicle crankshaft may hit pedestrians during lateral transfer. In order to cooperate the work of the crankshaft position transferring device, the crankshafts on the two carrying devices are transferred by the crankshaft position transferring device at the same feeding point, and the risk that the automobile crankshafts bump pedestrians during transverse transferring is reduced, the automobile crankshaft transferring device with the anti-collision function needs to be developed urgently.

Disclosure of Invention

In view of the defects of the prior art, the invention aims to provide an automobile crankshaft transferring device with an anti-collision function, which aims to transfer crankshafts on a conveying device, enable all crankshafts to be transferred by a crankshaft position transferring device at the same feeding point, and reduce the risk of injuring pedestrians when the automobile crankshafts are transversely transferred.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides an automobile crankshaft moves and carries device with anticollision function, includes the frame, sets up at the frame top, sets up the frame that moves on the guide rail along guide rail, the slidable that frame length direction extends, sets up tray, driving motor and the control module on moving the frame that moves, driving motor's output is equipped with the torque limiter, the torque limiter passes through drive mechanism and moves a frame transmission connection, drive mechanism is including setting up the action wheel on the torque limiter, rotationally set up the follow driving wheel in the frame to and around establishing at the action wheel and follow the flexible annular transmission spare on the driving wheel, it passes through connecting piece and flexible annular transmission spare fixed connection to move the frame, driving motor is used for driving the torque limiter motion and makes drive mechanism drive and move frame horizontal reciprocating motion.

The rack is provided with a driven wheel mounting frame and a tensioning mechanism, the tensioning mechanism comprises a fixed block and a screw hole formed in the fixed block, the screw hole extends towards the length direction of the rack, the screw hole is screwed into a screw rod, and one end of the screw rod penetrates through the screw hole and presses the driven wheel mounting frame.

The torque limiter comprises a coupling main body, an active friction plate, a passive friction plate, a disc spring and a locking end cover, wherein the active friction plate, the passive friction plate, the disc spring and the locking end cover are arranged on the coupling main body, the active friction plate and the passive friction plate are arranged between the active friction plate and the passive friction plate, and the disc spring is used for pressing the passive friction plate to enable the active friction plate to rotate under the action of friction force provided by the active friction plate and the passive friction plate.

The frame includes two parallel arrangement's crossbeam, sets up the stand at the crossbeam both ends respectively, and the upper surface of every crossbeam is provided with one the guide rail forms the transmission interval that supplies flexible annular driving medium activity between two guide rails.

The frame is provided with a plurality of guide wheels which are pressed against the outer ring of the flexible annular transmission part.

The transfer rack comprises a sliding block, a sliding frame and a support, the sliding block is connected with the guide rail in a sliding mode, the sliding frame is arranged on the sliding block, the support is arranged at the bottom of the sliding frame, and the tray is arranged on the support.

The tray comprises a supporting plate connected with the bracket, a front end shaft positioning seat, a rear end shaft positioning seat, a limiting block and a supporting seat, wherein the front end shaft positioning seat, the rear end shaft positioning seat, the limiting block and the supporting seat are arranged on the bottom plate.

The sliding frame is provided with a driving lever used for triggering the travel switches.

The two ends of the guide rail are provided with limiting seats, the rack is provided with in-place proximity switches, and the in-place proximity switches are used for detecting whether the moving frame moves in place or not.

The beam is provided with a warning lamp which is positioned in the middle of the beam.

Has the beneficial effects that:

the invention provides an automobile crankshaft transfer device with an anti-collision function, compared with the prior art, the automobile crankshaft transfer device is used for connecting a first carrying device and a second carrying device, when a crankshaft is carried to a tray by the first carrying device, the crankshaft position transfer device can be directly transferred, when the crankshaft is carried to the tray by the second carrying device, a control module controls a driving motor to be started, the driving motor drives a torque limiter to rotate, and the torque limiter drives a driving wheel, a driven wheel and a flexible annular transmission part to move, so that a transfer frame transversely moves towards the direction of the first carrying device, and the tray moves to a feeding point of the crankshaft position transfer device. When the moving and carrying frame collides with a pedestrian, the driving wheel and the torque limiter slip, so that the moving and carrying frame stops moving immediately, the pedestrian cannot be injured, and the moving and carrying frame is prevented from causing secondary injury to the pedestrian. When the pedestrian leaves the transfer frame, the transmission torque of the driving wheel and the torque limiter is lower than the preset sliding torque value of the torque limiter, the driving wheel automatically restores to normal work, and the loss caused by shutdown is avoided.

Drawings

Fig. 1 is a perspective view of an automobile crankshaft transfer device according to the present invention 1.

Fig. 2 is a partially enlarged view of the region H in fig. 1.

Fig. 3 is a partially enlarged view of the region L in fig. 1.

Fig. 4 is a partially enlarged view of the region M in fig. 1.

Fig. 5 is a perspective view of a torque limiter and a driving motor in the automobile crankshaft transfer device according to the present invention.

Fig. 6 is a perspective view 2 of the vehicle crankshaft transfer apparatus according to the present invention.

Fig. 7 is a schematic layout of the devices in the automatic conveying line.

Detailed Description

The invention provides an automobile crankshaft transferring device with an anti-collision function, and in order to make the purpose, technical scheme and effect of the invention clearer and clearer, the invention is further described in detail by referring to the attached drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the scope of the invention.

Referring to fig. 1-7, the present invention provides an automobile crankshaft transferring device with anti-collision function, which comprises a frame 1, a guide rail 2 disposed on the top of the frame and extending along the length direction of the frame, a transferring frame 3 slidably disposed on the guide rail, a tray 4 disposed on the transferring frame, a driving motor 5 and a control module, the output end of the driving motor is provided with a torque limiter 6, the torque limiter 6 is in transmission connection with the transfer rack 3 through a transmission mechanism, the transmission mechanism comprises a driving wheel 71 arranged on the torsion limiter and a driven wheel 72 rotatably arranged on the frame, and a flexible annular transmission member 73 wound on the driving wheel and the driven wheel, the moving carrier 3 is fixedly connected with the flexible annular transmission member 73 through a connecting member 31, the driving motor 5 is used for driving the torque limiter 6 to move so that the transmission mechanism drives the moving frame 3 to transversely reciprocate. Here, the control module may employ a PLC control system and a single chip microcomputer control system.

In this embodiment, please refer to fig. 7, the automobile crankshaft transferring device connects the first carrying device a and the second carrying device B, the first carrying device a and the second carrying device B are arranged in parallel, the area between the two carrying devices is a pedestrian path C, the first carrying device a is located at the upstream of the crankshaft position transferring device D, the second carrying device B is far away from the crankshaft position transferring device D, when the first carrying device a carries the crankshaft onto the tray 4, the crankshaft position transferring device D can be directly transferred, and the tray position in this state is a loading point; when the second carrying device B carries the crankshaft to the tray 4, the control module controls the driving motor 5 to be started, the driving motor 5 drives the torque limiter 6 to rotate, and the torque limiter 6 drives the driving wheel 71, the driven wheel 72 and the flexible annular transmission piece 73 to move, so that the moving frame 3 moves transversely towards the direction of the first carrying device A, and the tray moves to a feeding point. Because the output end of the driving motor 5 is connected with the driving wheel 71 through the torque limiter 6, when the transfer rack 3 collides with a pedestrian, the transmission torque of the driving wheel 71 and the torque limiter 6 can be instantly increased and exceed the preset sliding torque value of the torque limiter 6, so that slipping occurs between the driving wheel 71 and the torque limiter 6, the transfer rack 3 immediately stops moving, the pedestrian cannot be injured, and the transfer rack is prevented from causing secondary injury to the pedestrian. When the pedestrian leaves the moving frame, the transmission torque of the driving wheel 71 and the torque limiter 6 is lower than the preset sliding torque value of the torque limiter, the driving wheel automatically restores to normal work, and loss caused by shutdown is avoided.

Here, in order to ensure that the transfer rack does not injure the human body even after colliding with a person, the driving motor 5 is preferably a reduction motor, and the moving speed of the transfer rack is reduced to reduce the momentum of the transfer rack during moving.

Specifically, referring to fig. 2, the frame 1 is provided with a driven wheel mounting bracket 74 and a tensioning mechanism 75, the tensioning mechanism 75 includes a fixed block 75.1 and a screw hole formed in the fixed block, the screw hole extends in the length direction of the frame, the screw hole is screwed into a screw 75.2, and one end of the screw 75.2 penetrates through the screw hole and presses the driven wheel mounting bracket 74. By adjusting the screw insertion length, the relative distance of the driven wheel mounting bracket to the torque limiter is adjusted, thereby adjusting the tension of the flexible endless drive member 73.

Further, referring to fig. 5, the torque limiter 6 includes a coupling body 61, an active friction plate 62 disposed on the coupling body, a passive friction plate 63, a belleville spring (not visible in the figure), and a locking end cap 64, wherein the active friction plate 71 is disposed between the active friction plate 62 and the passive friction plate 63, and the belleville spring is configured to compress the passive friction plate 63, so that the active friction plate 62 rotates under the friction force provided by the active friction plate and the passive friction plate. The compression amount of the disc spring can be adjusted by locking the end cover 64, thereby playing a role of adjusting the torsion preset value of the torsion limiter.

Preferably, referring to fig. 1 and fig. 6, the frame 1 includes two parallel beams 11 and two vertical columns 12 respectively disposed at two ends of the beams, the upper surface of each beam 11 is provided with one guide rail 2, and a transmission area for the flexible annular transmission element 73 to move is formed between the two guide rails 2. Through the arrangement, the moving frame 3 moves stably and smoothly, has better bearing performance for heavy crankshafts and has long service life.

Preferably, referring to fig. 1, the frame is provided with a plurality of guide wheels 76, and the guide wheels 76 are pressed against the outer ring of the flexible annular transmission member 73. The guide wheel can change the motion trail of the flexible annular transmission piece, so that the flexible annular transmission piece is better connected with the connecting piece 31, and the interference of the flexible annular transmission piece and other parts is also avoided.

Further, referring to fig. 3 and 6, the carriage 3 includes a slide block 32 slidably connected to the guide rail, a carriage 33 disposed on the slide block, and a bracket 34 disposed at the bottom of the carriage, and the tray 4 is disposed on the bracket 33. The sliding frame 33 comprises a top plate 33.1 arranged on the upper surface of the sliding block and a bottom plate 33.2 arranged in parallel with the top, the top plate 33.1 and the bottom plate 33.2 are connected through a side plate 33.3, the top end of the support 34 is connected with the bottom surface of the bottom plate 33.2, the bottom end of the support is connected with the tray, the sliding frame is simple in structure and high in overall strength, and the tray is stable and reliable when being used for transferring crankshafts.

In this embodiment, the driving wheel 71 and the driven wheel 72 are synchronizing wheels, the flexible ring transmission element 73 is a synchronous belt, the connecting element 31 comprises an L-shaped plate fixedly connected with the top plate and a clamping block for clamping one section of synchronous belt, and the side surface of the clamping block is fixedly connected with the L-shaped plate.

In another embodiment, the driving pulley 71 and the driven pulley 72 are chain wheels, the flexible annular transmission member 73 is a chain, the connecting member includes an L-shaped plate fixedly connected with the top plate, and a U-shaped block fixedly embedded outside the chain, and a side surface of the U-shaped block is fixedly connected with the L-shaped plate.

Preferably, referring to fig. 4, the tray 4 includes a supporting plate 41 connected to the bracket, a front shaft positioning seat 42, a rear shaft positioning seat 43, a limiting block 44 and a supporting seat 45 disposed on the bottom plate. The tray can support 2 crankshafts of different types, such as a crankshaft of a 2.0L engine and a crankshaft of a 2.5L engine, the two types of crankshafts are different in axial length, the crankshafts are placed on the front end shaft positioning seat 72 and the rear end shaft positioning seat 73 and are axially positioned through the limitation of the limiting blocks, and the crankshafts are prevented from shaking left and right; the supporting seat symmetry is provided with two sets ofly, and every group supporting seat 45 bears the weight of the bent axle including the first backup pad 45.1 that is used for supporting 2.0L engine crankshaft and the second backup pad 45.2 that is used for supporting 2.5L engine crankshaft on the one hand, and the supporting seat is on the other hand to the bent axle and carry out radial positioning, guarantees that the bent axle obtains the location in handling, can not take place the skew.

Preferably, referring to fig. 6, two travel switches 81 are disposed on the cross beam, and a shift lever 82 for triggering the travel switches is disposed on the carriage. In order to further improve the operation safety of the production line, each carrying device is surrounded by a fence E, an opening F for passing the bracket and the tray is arranged on the fence, and a safety grating G is arranged on the opening F. When the moving carrier is about to pass through the opening F, the poking rod 82 on the sliding frame triggers the travel switch 81, and the travel switch 81 sends a signal to the control module to close the safety grating G, so that the moving carrier and the tray can pass through smoothly. When the shifting rod 82 does not trigger the travel switch 81 any more, the travel switch automatically resets to enable the safety grating to work normally, and if a person accidentally breaks into the safety grating, the safety grating is triggered to enable the transport line to stop immediately, so that the operators are effectively prevented from being injured.

Preferably, referring to fig. 2 and 3, both ends of the guide rail are provided with limiting seats 91 for limiting the further movement of the moving rack, each limiting seat 91 comprises an adjusting bracket 91.1 and a buffer block 91.2 arranged on the adjusting bracket, the buffer block 91.2 faces the moving rack, and the moving rack stops moving after colliding with the buffer block, so that the tray is accurately positioned and works in cooperation with other devices.

Preferably, the machine frame is provided with a position-in proximity switch (not visible in the figure), and the position-in proximity switch is used for detecting whether the moving frame moves in position. When the in-place proximity switch detects that the moving frame 3 moves in place, a signal is fed back to the control module, the control module controls the driving motor to stop working, and the automation degree is high.

Preferably, a warning light 10 is arranged on the cross beam and is positioned in the middle of the cross beam. The warning lamp is connected with the control module, and when the moving rack flickers all the time in the carrying process (namely, in the starting state of the driving motor), pedestrians passing through the passage are reminded to pay attention to safety.

In order to prevent foreign matters or dust from affecting the operation of the components, the top of the cross beam is provided with a dust cover 11.

It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the protective scope of the present invention.

Claims

1. The automobile crankshaft transferring device with the anti-collision function is characterized by comprising a rack, a guide rail, a transferring frame, a tray, a driving motor and a control module, wherein the guide rail is arranged at the top of the rack and extends along the length direction of the rack; the automobile crankshaft transferring device is used for connecting two carrying devices which are arranged in parallel, and an area between the two carrying devices is a pedestrian path; the torque limiter comprises a coupling main body, an active friction plate, a passive friction plate, a disc spring and a locking end cover, wherein the active friction plate, the passive friction plate, the disc spring and the locking end cover are arranged on the coupling main body; the tray comprises a supporting plate connected with the bracket, a front end shaft positioning seat, a rear end shaft positioning seat, a limiting block and a supporting seat, wherein the front end shaft positioning seat, the rear end shaft positioning seat, the limiting block and the supporting seat are arranged on the bottom plate; the tray can support crankshafts of two different models; the crankshaft is placed on the front end shaft positioning seat and the rear end shaft positioning seat, and axial positioning is realized through the limitation of the limiting blocks; two groups of supporting seats are symmetrically arranged, and each group of supporting seats comprises a first supporting plate and a second supporting plate; the frame comprises two beams arranged in parallel and upright columns respectively arranged at two ends of the beams, the upper surface of each beam is provided with one guide rail, and a transmission section for the flexible annular transmission part to move is formed between the two guide rails; the rack comprises two beams arranged in parallel and upright columns respectively arranged at two ends of the beams, the upper surface of each beam is provided with one guide rail, and a transmission section for the flexible annular transmission part to move is formed between the two guide rails; the rack is provided with a plurality of guide wheels which are pressed against the outer ring of the flexible annular transmission part; the transfer rack comprises a sliding block in sliding connection with the guide rail, a sliding frame arranged on the sliding block and a bracket arranged at the bottom of the sliding frame, and the tray is arranged on the bracket; two travel switches are arranged on the cross beam, and a deflector rod for triggering the travel switches is arranged on the sliding frame; each carrying device is surrounded by a fence, and the fence is provided with an opening for the support and the tray to pass through; the opening is provided with a safety grating, when the transfer frame is about to pass through the opening, a deflector rod on the sliding frame triggers a travel switch, and the travel switch sends a signal to the control module to close the safety grating, so that the transfer frame and the tray pass through smoothly; when the shifting lever does not trigger the travel switch any more, the travel switch automatically resets.

2. The automobile crankshaft transfer device with the anti-collision function as claimed in claim 1, wherein the rack is provided with a driven wheel mounting rack and a tensioning mechanism, the tensioning mechanism comprises a fixed block and a screw hole formed in the fixed block, the screw hole extends in the length direction of the rack, the screw hole is screwed into a screw rod, and one end of the screw rod penetrates through the screw hole and presses the driven wheel mounting rack.

3. The automobile crankshaft transfer device with the anti-collision function according to claim 1, wherein both ends of the guide rail are provided with limiting seats, the rack is provided with an in-place proximity switch, and the in-place proximity switch is used for detecting whether the transfer rack moves in place.

4. The automobile crankshaft transfer device with the anti-collision function as claimed in claim 1, wherein a warning light is arranged on the cross beam and is located in the middle of the cross beam.