Y-shaped frame conveying system and conveying switching method

Abstract

The invention discloses a Y-shaped frame conveying system and a conveying switching method.The Y-shaped frame conveying system comprises a repair welding line main track, a first assembly welding line track and a second assembly welding line track which form a Y-shaped layout, and a track switching mechanism is arranged at the intersection of the three tracks; the track switching mechanism comprises a first movable track and a second movable track; the track switching mechanism has a first communication form and a second communication form: in the first communication form, the first movable track moves to communicate the first group welding line track with the repair welding line main track, and meanwhile, the second group welding line track is disconnected from the repair welding line main track; and in the second communication state, the second movable track moves to communicate the second group welding line track with the repair welding line main track, and meanwhile, the first group welding line track is disconnected from the repair welding line main track. According to the repair welding line conveying device, the two assembly welding line rails are conveyed into the same repair welding line main rail, fusion of the two assembly welding line rails and the same repair welding line main rail is guaranteed, and the use efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile frame production, and particularly relates to a Y-shaped frame conveying system and a conveying switching method. Background Art

[0002] In the production of automobile frames, since the welding speed at the frame repair welding station is generally higher than that at the frame assembly welding station, and at the same time, due to the large variety of frames, the repair welding fixtures have strong versatility, but the assembly welding fixtures vary greatly, it is very difficult to combine them on the same line body. Moreover, using multiple independent frame welding lines has problems such as too large a head of the welding line body and insufficient space.

[0003] On this basis, the applicant proposes a new line layout, merging two independent frame assembly welding lines into one repair welding line. This line layout can give full play to the characteristics of the assembly welding line and the repair welding line, and improve the usage efficiency.

[0004] If such a line layout is adopted, there will be problems of interference between the frame transfer tracks. For example, if a transfer machine is used to transfer and transport the frames, in addition to the increased investment in the transfer machine, there is also the problem of occupying too much space, and the control system is relatively complex and inconvenient for later maintenance. Summary of the Invention

[0005] The present invention provides a Y-shaped frame conveying system and a conveying switching method to solve the problems in the prior art.

[0006] To solve the above technical problems, the present invention adopts the following technical solutions: A Y-shaped frame conveying system includes a main repair welding line track, a first assembly welding line track, and a second assembly welding line track. Both the first assembly welding line track and the second assembly welding line track converge into the main repair welding line track, and the three form a Y-shaped layout. A track switching mechanism is provided at the intersection of the three tracks; The track switching mechanism includes a moving device and two movable tracks installed on the moving device. The two movable tracks are respectively a first movable track and a second movable track; the track switching mechanism has a first connected state and a second connected state: In the first connected state, the first movable track moves between the first assembly welding line track and the main repair welding line track and connects the first assembly welding line track and the main repair welding line track. At the same time, the second movable track leaves the movement track between the second assembly welding line track and the main repair welding line track, disconnecting the second assembly welding line track and the main repair welding line track; In the second connected state, the second movable track moves between the second assembly welding line track and the main repair welding line track and connects the second assembly welding line track and the main repair welding line track. At the same time, the first movable track leaves the movement track between the first assembly welding line track and the main repair welding line track, disconnecting the first assembly welding line track and the main repair welding line track.

[0007] Further, the mobile device includes a transverse slide rail. Taking the positions where the first group of wire bonding tracks and the second group of wire bonding tracks are located as left and right, the transverse slide rail extends horizontally from left to right. A sliding seat is slidably engaged with the transverse slide rail. The first movable track and the second movable track are respectively fixed to the left and right sides of the sliding seat. The sliding seat is connected to a moving drive unit, and the moving drive unit drives the sliding seat to move left and right on the transverse slide rail to realize the switching between the first connected state and the second connected state.

[0008] Further, the transverse slide rail is an I-shaped slide rail, and the two long grooves of the I-shaped slide rail are sliding grooves. The sliding seat includes two connecting plates arranged before and after the transverse slide rail, and the two connecting plates are fixedly connected by a connecting rod; positioning pulleys are provided on the inner sides of the two connecting plates, and the positioning pulleys are engaged with the corresponding sliding grooves.

[0009] Further, the connecting rod is located at the top of the I-shaped slide rail. The moving drive unit is an ejecting cylinder provided at the top of the I-shaped slide rail, and the movable end of the ejecting cylinder is connected to the connecting rod. Meanwhile, a first limiting block and a second limiting block are respectively provided at the left and right positions at the top of the transverse slide rail; when the ejecting cylinder drives the connecting rod to move right to the second limiting block, the first connected state is completed; when the ejecting cylinder drives the connecting rod to move left to the first limiting block, the second connected state is completed.

[0010] Further, a blocking plate is also fixed on the sliding seat; in the first connected state, the blocking plate forms a block for the second group of welding tracks; in the second connected state, the blocking plate forms a block for the first group of welding tracks.

[0011] Further, the first movable track and the second movable track are distributed in a shape of an eight, and the blocking plate is located at the middle position of the large opening of the eight.

[0012] Further, transition mechanisms are provided at both ends of the movable track. The movable track includes two side plates arranged along the track of the movable track. The transition mechanism includes transition plates respectively provided at the positions of the two side plates at the end of the movable track, and the transition plates are located inside the side plates; the transition plates are horizontally arranged, and both ends thereof are slopes. Long holes extending horizontally are provided on the side plates, and sliders slidably engaged with the long holes are provided in the long holes. The sliders are fixedly connected to the transition plates. A transition cylinder is provided outside the side plate, and the movable end of the transition cylinder is connected to the slider. When the transition plate is in the working state, the transition cylinder extends to move the transition plate outward to partially enter the first group of wire bonding tracks / the second group of wire bonding tracks / the main track for repair wire bonding; when the transition plate is in the non-working state, the transition cylinder retracts to completely retract the transition plate into the movable track.

[0013] Furthermore, the main rail of the repair welding line, the first group of welding line rails and the second group of welding line rails are all installed on the top frame to form a hanging rail form, and the transverse slide rail is also installed on the top frame.

[0014] Furthermore, it also includes a PLC control unit. Detection switches are installed at the first group of welding wire tracks, the second group of welding wire tracks, the first limit block and the second limit block. The detection switch is connected to the signal input end of the PLC control unit, and the signal output end of the PLC control unit is connected to the ejection cylinder and the transition cylinder.

[0015] The present invention also discloses a transport switching method, based on the Y-shaped frame transport system, comprising: a method for switching to a first connection state and a method for switching to a second connection state; The method for switching to the first connection mode comprises the following steps: When the self-propelled hoist on the first set of welding line tracks moves with the frame toward the main track of the repair welding line, it is first sensed by the detection switch installed on the first set of welding line tracks, and the signal is transmitted to the PLC control unit. The PLC control unit sends a signal to stop the self-propelled hoist on the second set of welding line tracks, forming a program interlock; The PLC control unit sends a signal to control the ejection cylinder to move the sliding seat to the right until the connecting rod contacts the second limit block. At this time, the first movable track in the sliding seat moves to between the first group of welding line tracks and the main track of the repair welding line. At this time, the first movable track is in the same motion trajectory as the first group of welding line tracks and the main track of the repair welding line; after reaching the position, the transition cylinder acts to push the transition plates at both ends of the first movable track outward until they partially enter the first group of welding line tracks and the main track of the repair welding line; At this time, the second movable track in the sliding seat leaves the moving track of the second set of welding line tracks and the main track of the repair welding line, so that the second set of welding line tracks and the main track of the repair welding line are disconnected, and the blocking plate on the sliding seat forms a blockage for the second set of welding line tracks, ensuring that the self-propelled hoist at the second set of welding line tracks cannot pass through, forming a double self-locking protection on the mechanical structure; When the self-propelled hoist returns to its original position from the main track of the repair welding line, the detection switch senses and transmits the signal to the PLC control unit to release the program interlock; and the transition plate is reset to the non-working state; The method for switching to the second connection mode comprises the following steps: When the self-propelled hoist on the second set of welding line tracks moves with the frame toward the main track of the repair welding line, it is first sensed by the detection switch installed on the second set of welding line tracks, and the signal is transmitted to the PLC control unit. The PLC control unit sends a signal to stop the self-propelled hoist on the first set of welding line tracks, forming a program interlock; The PLC control unit controls the ejection cylinder to move the sliding seat to the left until the connecting rod contacts the first limit block. At this time, the second movable track in the sliding seat moves to between the second group of welding line tracks and the main track of the repair welding line. At this time, the second movable track, the second group of welding line tracks and the main track of the repair welding line are in the same motion trajectory; after reaching the position, the transition cylinder acts to push the transition plates at both ends of the second movable track outward until they partially enter the second group of welding line tracks and the main track of the repair welding line; At this time, the first movable track in the sliding seat leaves the moving track of the first group of welding line tracks and the main track of the repair welding line, so that the first group of welding line tracks and the main track of the repair welding line are disconnected, and the blocking plate on the sliding seat forms a blockage for the first group of welding line tracks, ensuring that the self-propelled hoist at the first group of welding line tracks cannot pass through, forming a double self-locking protection on the mechanical structure; When the self-propelled hoist returns to its original position from the main track of the repair welding line, the detection switch senses and transmits the signal to the PLC control unit to release the program interlock; and the transition plate is reset to the non-working state.

[0016] Beneficial effects of the present invention: The present invention realizes that both the two assembly welding line tracks are transported to the same main track of the repair welding line, thereby ensuring the integration of the two assembly welding line tracks with the same main track of the repair welding line, improving the utilization efficiency, reducing the investment, and reducing the demand for the site.

[0017] The present invention utilizes a track switching mechanism to conveniently switch between different tracks during frame transportation, so that frame hangers from different frame assembly welding lines can accurately enter the frame repair welding line body, and at the same time, the frame hanger of another assembly welding line is isolated in the conveying line to prevent the two welding line equipment from interfering with each other, thereby solving the problem of increased site and investment caused by traditional methods such as transplanting machines, and improving the use efficiency of the frame repair welding line.

[0018] The present invention ensures the stability of the self-propelled spreader during operation by setting up the transition mechanism, reduces the impact of the track joint on the moving part of the self-propelled spreader, reduces the strength requirement of the mechanism, and realizes the lightweight of the mechanism.

[0019] The present invention realizes the process interlocking and mechanical secondary interlocking functions at the same time, thus ensuring reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 yes Figure 1 A magnified view of the mid-track switching mechanism; Figure 3 yes Figure 2 The P view in the figure; Figure 4 is a schematic diagram of a transition plate of a transition mechanism in a working state; Figure 5 It is a schematic diagram of the first connected form of the present invention; Figure 6 It is a schematic diagram of the second connected form of the present invention.

[0021] The attached drawings are only for illustrative purposes and should not be construed as a limitation of this patent; for better illustration of this embodiment, some components in the attached drawings will be omitted, enlarged or reduced, which does not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the attached drawings may be omitted. Detailed implementation manners

[0022] The following will describe in detail the specific implementation manners of the present invention with reference to the attached drawings. It should be understood that the specific implementation manners described herein are only for explaining and illustrating the present invention and are not used to limit the present invention.

[0023] As Figures 1 to 6 shown, this embodiment discloses a Y-shaped frame conveying system, which includes a main repair welding line track 2, a first group of welding line tracks 3 and a second group of welding line tracks 4. Both the first group of welding line tracks 3 and the second group of welding line tracks 4 converge into the main repair welding line track 2. Taking the positions where the first group of welding line tracks 3 and the second group of welding line tracks 4 are located as left and right, the main repair welding line track 2 is located in the middle and extends forward and backward. The three form a Y-shaped layout, and a track switching mechanism is provided at the intersection of the three tracks.

[0024] In this embodiment, the main repair welding line track 2, the first group of welding line tracks 3 and the second group of welding line tracks 4 are all fixedly installed on the top frame 1 to form a suspended track form. The top frame 1 is made of steel structure.

[0025] The track switching mechanism includes a moving device and two movable tracks installed on the moving device.

[0026] Specifically, the moving device includes a transverse sliding rail 5, which extends horizontally from left to right and is fixedly installed on the top frame 1. A sliding seat 6 is slidably matched with the transverse sliding rail 5. The left and right sides of the sliding seat 6 are respectively fixedly provided with movable tracks, and the two movable tracks are respectively a first movable track 21 and a second movable track 22. The first movable track 21 and the second movable track 22 are distributed in a V-shaped pattern.

[0027] The transverse sliding rail 5 is selected as an I-shaped sliding rail, and the two long grooves of the I-shaped sliding rail are sliding grooves. The sliding seat 6 includes two connecting plates 18 arranged before and after the transverse sliding rail 5. The two connecting plates 18 are fixedly connected by a connecting rod 19, and the connecting rod 19 is located at the top of the I-shaped sliding rail. Positioning pulleys 17 are provided on the inner sides of the two connecting plates 18, and the positioning pulleys 17 are matched with the corresponding sliding grooves.

[0028] The sliding seat 6 is connected to the moving drive unit, and the moving drive unit drives the sliding seat to move left and right on the transverse slide rail, realizing the switching between the first connected state and the second connected state. In this embodiment, the moving drive unit is the ejector cylinder 12. The ejector cylinder 12 is arranged on the top of the I-shaped slide rail through the fixed seat 11, and the movable end of the ejector cylinder 12 is connected to the connecting rod 19. A reversing valve 13 is provided in cooperation with the ejector cylinder 12, and the reversing valve 13 is used to control the telescopic movement of the ejector cylinder 12.

[0029] Meanwhile, the first limit block 7 and the second limit block 8 are respectively arranged at the left and right positions at the top of the transverse slide rail 5.

[0030] A blocking plate 23 is also fixedly arranged on the outer side of the connecting plate 18 on the side of the sliding seat 6 close to the first group of wire bonding tracks 3 and the second group of wire bonding tracks 4. The blocking plate 23 is located at the middle position of the large opening of the eight-shaped (the eight-shaped of the first movable track 21 and the second movable track 22).

[0031] The track switching mechanism has a first connected state and a second connected state: In the first connected state, the ejector cylinder 12 drives the connecting rod 19 to move rightward to the second limit block 8. At this time, the first movable track 21 moves between the first group of wire bonding tracks 3 and the main repair wire track 2, and connects the first group of wire bonding tracks 3 and the main repair wire track 2. At the same time, the second movable track 22 leaves the movement track of the second group of wire bonding tracks 4 and the main repair wire track 2, disconnecting the second group of wire bonding tracks 3 and the main repair wire track 4. And, the blocking plate 22 forms a block for the second group of welding tracks.

[0032] In the second connected state, the ejector cylinder 12 drives the connecting rod 19 to move leftward to the first limit block 7. At this time, the second movable track 22 moves between the second group of wire bonding tracks 4 and the main repair wire track 2, and connects the second group of wire bonding tracks 4 and the main repair wire track 2. At the same time, the first movable track 21 leaves the movement track of the first group of wire bonding tracks 3 and the main repair wire track 2, disconnecting the first group of wire bonding tracks 3 and the main repair wire track 2. And, the blocking plate 22 forms a block for the first group of welding tracks 3.

[0033] In order to ensure that the movable track does not interfere with the fixed tracks (the main repair wire track 2, the first group of wire bonding tracks 3 and the second group of wire bonding tracks 4) during movement, there is a gap of 2 mm - 3 mm between both ends of the movable track and the main repair wire track 2 and the first group of wire bonding tracks 3 / the second group of wire bonding tracks 4.

[0034] Therefore, transition mechanisms are provided at both ends of the movable track to reduce the impact force on the track caused by the self-lifting device due to the gap, thereby extending the service life of the lifting device and the track.

[0035] The movable track includes two side plates 20 arranged along the trajectory of the movable track. The transition mechanism includes transition plates 10 respectively arranged at the positions of the two side plates 20 at the end of the movable track. The transition plates 10 are located inside the side plates 20. The transition plates 10 are horizontally arranged, and both ends thereof are slopes.

[0036] The side plates 20 are provided with long holes extending horizontally. Sliders slidably engaged with the long holes are arranged inside the long holes. The sliders are fixedly connected to the transition plates 10. A transition cylinder 9 is arranged outside the side plates 20. The movable end of the transition cylinder 9 is connected to the slider.

[0037] When the transition plates 10 are in the working state, the transition cylinder 9 extends to move the transition plates 10 outward until part of them enter the first group of wire bonding tracks 3 / the second group of wire bonding tracks 4 / the main repair wire track 2. At this time, when the self-propelled spreader 15 passes through the gap, the running wheels of the self-propelled spreader 15 will transition from the slope and pass through the gap via the transition plates 10, ensuring that the self-propelled spreader 15 can smoothly pass through the gap.

[0038] When the transition plates 10 are in the non-working state, the transition cylinder 9 retracts to completely retract the transition plates 10 into the movable track. At this time, there will be no interference with the movement of the movable track of the track switching mechanism.

[0039] The setting of the transition mechanism ensures the smoothness of the self-propelled spreader during operation, reduces the impact on the moving parts of the self-propelled spreader at the track joint, reduces the strength requirement of the mechanism, and realizes the light weight of the mechanism.

[0040] This embodiment further includes a PLC control unit 16. Detection switches 14 are installed at the main repair wire track 2, the first group of wire bonding tracks 3, the second group of wire bonding tracks 4, the first limit block 7, and the second limit block 8. The detection switches 14 are connected to the signal input end of the PLC control unit 16. The signal output end of the PLC control unit 16 is connected to the ejector cylinder 12 and the transition cylinder 9.

[0041] This embodiment also discloses a conveying and switching method. Based on the above Y-shaped frame conveying system, it includes a method for switching to the first connected form and a method for switching to the second connected form.

[0042] The method for switching to the first connected form includes the following steps: When the self-propelled spreader 15 on the first group of wire bonding tracks 3 moves the frame towards the main repair wire track 2, it is first sensed by the detection switch 14 installed on the first group of wire bonding tracks 3. The signal is transmitted to the PLC control unit 16. The PLC control unit 16 issues a signal to stop the movement of the self-propelled spreader 15 on the second group of wire bonding tracks 4, forming a program interlock.

[0043] The PLC control unit 16 sends out signals to control the reversing valve 13 to act, so as to control the ejector cylinder 12 to move the sliding seat 6 to the right until the connecting rod 19 contacts the second limit block 8. At this time, the first moving track 21 in the sliding seat 6 moves between the first group of wire welding tracks 3 and the main repair welding wire track 2. At this time, the first moving track 21 and the first group of wire welding tracks 3 and the main repair welding wire track 2 are on the same movement track; after reaching the position, the transition cylinder 9 acts to push the transition plates 10 at both ends of the first moving track 21 outwards until part of them enter the first group of wire welding tracks 3 and the main repair welding wire track 2.

[0044] At this time, the second moving track 22 in the sliding seat 6 leaves the movement track of the second group of wire welding tracks 4 and the main repair welding wire track 2, disconnecting the second group of wire welding tracks 4 and the main repair welding wire track 2, and the blocking plate 23 on the sliding seat 6 forms a block for the second group of wire welding tracks 4, ensuring that the self-propelled lifting device at the second group of wire welding tracks 4 cannot pass through, forming a double self-locking protection in the mechanical structure.

[0045] When the self-propelled lifting device 15 returns from the main repair welding wire track 2, the detection switch 14 senses and transmits the signal to the PLC control unit 16 to release the program interlock; and the transition plate 10 resets to the non-working state.

[0046] The method for switching to the second communication form includes the following steps: When the self-propelled lifting device 15 on the second group of wire welding tracks 4 moves the vehicle frame towards the main repair welding wire track 2, it is first sensed by the detection switch 14 installed on the second group of wire welding tracks 4, and the signal is transmitted to the PLC control unit 16. The PLC control unit 16 sends out signals to stop the movement of the self-propelled lifting device 15 on the first group of wire welding tracks 3, forming a program interlock.

[0047] The PLC control unit 16 sends out signals to control the reversing valve 13 to act, so as to control the ejector cylinder 12 to move the sliding seat 6 to the left until the connecting rod 19 contacts the first limit block 7. At this time, the second moving track 22 in the sliding seat 6 moves between the second group of wire welding tracks 4 and the main repair welding wire track 2. At this time, the second moving track 22 and the second group of wire welding tracks 4 and the main repair welding wire track 2 are on the same movement track; after reaching the position, the transition cylinder 9 acts to push the transition plates 10 at both ends of the second moving track 22 outwards until part of them enter the second group of wire welding tracks 4 and the main repair welding wire track 2.

[0048] At this time, the first moving track 21 in the sliding seat 6 leaves the movement track of the first group of wire welding tracks 3 and the main repair welding wire track 2, disconnecting the first group of wire welding tracks 3 and the main repair welding wire track 2, and the blocking plate 23 on the sliding seat 6 forms a block for the first group of wire welding tracks 3, ensuring that the self-propelled lifting device 15 at the first group of wire welding tracks 3 cannot pass through, forming a double self-locking protection in the mechanical structure.

[0049] When the self - lifting device 15 returns from the main track 2 of the repair welding line, the detection switch 14 senses and transmits the signal to the PLC control unit 16 to release the program interlock; and the transition plate 10 resets to the non - working state. Then the conveying of the next workpiece is carried out.

[0050] The PLC control unit 16 sets the production conveying frequencies of different vehicle frame assembly welding lines according to the welding time and output requirements of different jigs, ensuring the matching of the repair welding line and the production of workpieces on the two group welding lines. At the same time, it is deduced that when different production capacities are adopted for different lines, the overall line utilization rate is the highest, that is, the ineffective waiting time of each line is eliminated as much as possible to meet the actual production requirements.

[0051] The present invention uses the track switching mechanism to conveniently switch different tracks during the conveyance of the vehicle frame, enabling the vehicle frame lifting devices from different vehicle frame assembly welding lines to accurately enter the vehicle frame repair welding line. At the same time, the vehicle frame lifting device of the other group welding line is blocked in the conveying line to prevent the interference between the two welding line devices, solving the problems of increased site and investment caused by traditional methods such as using transfer machines, and improving the use efficiency of the vehicle frame repair welding line.

[0052] The present invention effectively utilizes the situation that the speed of the repair welding line is faster than that of the group welding line, integrates different group welding lines into the same repair welding line, reducing investment and the demand for the site. And at the same time, the program interlock and mechanical secondary interlock functions are realized, ensuring reliability.

[0053] The above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: still modifications or equivalent substitutions can be made to the present invention without departing from the spirit and scope of the present invention, and any modification or partial substitution thereof should be covered by the scope of the claims of the present invention.

[0054] If terms such as "first" and "second" are used in this article to limit components, those skilled in the art should know that the use of "first" and "second" is only for the convenience of describing the present invention and simplifying the description. Without additional declaration, the above terms have no special meaning.

[0055] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention.

[0056] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected" and "coupled" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A Y-shaped frame conveying system, characterized in that: It includes a main repair welding wire track, a first group of welding wire tracks, and a second group of welding wire tracks. The first group of welding wire tracks and the second group of welding wire tracks both converge into the main repair welding wire track, and the three form a Y-shaped layout. A track switching mechanism is provided at the intersection of the three tracks; The track switching mechanism includes a moving device and two movable tracks installed on the moving device. The two movable tracks are respectively a first movable track and a second movable track; the track switching mechanism has a first connected state and a second connected state: In the first connected state, the first movable track moves between the first group of welding wire tracks and the main repair welding wire track and connects the first group of welding wire tracks and the main repair welding wire track. At the same time, the second movable track leaves the movement track of the second group of welding wire tracks and the main repair welding wire track, disconnecting the second group of welding wire tracks and the main repair welding wire track; In the second connected state, the second movable track moves between the second group of welding wire tracks and the main repair welding wire track and connects the second group of welding wire tracks and the main repair welding wire track. At the same time, the first movable track leaves the movement track of the first group of welding wire tracks and the main repair welding wire track, disconnecting the first group of welding wire tracks and the main repair welding wire track.

2. The Y-shaped frame conveying system according to claim 2, wherein: The moving device includes a horizontal slide rail. Taking the positions of the first group of welding wire tracks and the second group of welding wire tracks as left and right, the horizontal slide rail extends horizontally from left to right; A sliding seat is slidably matched with the horizontal slide rail. The first movable track and the second movable track are respectively fixed on the left and right sides of the sliding seat; The sliding seat is connected to a moving driving unit. The moving driving unit drives the sliding seat to move left and right on the horizontal slide rail to realize the switching between the first connected state and the second connected state.

3. The Y-shaped frame conveying system according to claim 2, characterized in that: The horizontal slide rail is an I-shaped slide rail, and the two long grooves of the I-shaped slide rail are sliding grooves; The sliding seat includes two connecting plates arranged before and after the horizontal slide rail. The two connecting plates are fixedly connected by a connecting rod; positioning pulleys are provided on the inner sides of the two connecting plates, and the positioning pulleys are matched with the corresponding sliding grooves.

4. The Y-shaped frame conveying system according to claim 3, wherein: The connecting rod is located at the top of the I-shaped slide rail; The moving driving unit is an ejecting cylinder provided at the top of the I-shaped slide rail, and the movable end of the ejecting cylinder is connected to the connecting rod; At the same time, a first limiting block and a second limiting block are respectively provided at the left and right positions at the top of the horizontal slide rail; when the ejecting cylinder drives the connecting rod to move right to the second limiting block, the first connected state is completed; when the ejecting cylinder drives the connecting rod to move left to the first limiting block, the second connected state is completed.

5. The Y-shaped frame conveying system according to claim 4, characterized in that: A blocking plate is also fixed on the sliding seat; in the first connected state, the blocking plate forms a block for the second group of welding tracks; in the second connected state, the blocking plate forms a block for the first group of welding tracks.

6. The Y-shaped frame conveying system according to claim 5, characterized in that: The first movable track and the second movable track are distributed in a shape of an eight, and the blocking plate is located at the middle position of the large opening of the eight; 7. The Y-shaped frame conveying system according to any one of claims 4-6, characterized in that: Transition mechanisms are provided at both ends of the movable track; The movable track includes two side plates arranged along the track of the movable track. The transition mechanism includes transition plates respectively arranged at the positions of the two side plates at the end of the movable track. The transition plates are located inside the side plates; the transition plates are horizontally arranged, and both ends of them are slopes; Long holes extending horizontally are provided on the side plates, and sliders slidably matched with the long holes are arranged in the long holes. The sliders are fixedly connected to the transition plates; A transition cylinder is provided outside the side plate, and the movable end of the transition cylinder is connected to the slider; When the transition plate is in working state, the transition cylinder extends to move the transition plate outward until it partially enters the first set of welding line tracks / the second set of welding line tracks / the main track of the repair welding line; when the transition plate is in non-working state, the transition cylinder retracts to completely retract the transition plate into the active track.

8. The Y-shaped frame conveying system according to claim 7, wherein: The main rail of the repair welding line, the first group of welding line rails and the second group of welding line rails are all installed on the top frame to form a hanging rail form, and the transverse slide rail is also installed on the top frame.

9. The Y-shaped frame conveying system according to claim 8, wherein: It also includes a PLC control unit. Detection switches are installed at the first group of welding wire tracks, the second group of welding wire tracks, the first limit block and the second limit block. The detection switch is connected to the signal input end of the PLC control unit. The signal output end of the PLC control unit is connected to the ejection cylinder and the transition cylinder.

10. A conveying switching method, based on the Y-shaped frame conveying system described in claim 9, characterized in that include: A method for switching to a first connection mode and a method for switching to a second connection mode; The method for switching to the first connection mode comprises the following steps: When the self-propelled hoist on the first set of welding line tracks moves with the frame toward the main track of the repair welding line, it is first sensed by the detection switch installed on the first set of welding line tracks, and the signal is transmitted to the PLC control unit. The PLC control unit sends a signal to stop the self-propelled hoist on the second set of welding line tracks, forming a program interlock; The PLC control unit sends a signal to control the ejection cylinder to move the sliding seat to the right until the connecting rod contacts the second limit block. At this time, the first movable track in the sliding seat moves to between the first group of welding line tracks and the main track of the repair welding line. At this time, the first movable track is in the same motion trajectory as the first group of welding line tracks and the main track of the repair welding line; after reaching the position, the transition cylinder acts to push the transition plates at both ends of the first movable track outward until they partially enter the first group of welding line tracks and the main track of the repair welding line; At this time, the second movable track in the sliding seat leaves the moving track of the second set of welding line tracks and the main track of the repair welding line, so that the second set of welding line tracks and the main track of the repair welding line are disconnected, and the blocking plate on the sliding seat forms a blockage for the second set of welding line tracks, ensuring that the self-propelled hoist at the second set of welding line tracks cannot pass through, forming a double self-locking protection on the mechanical structure; When the self-propelled hoist returns to its original position from the main track of the repair welding line, the detection switch senses and transmits the signal to the PLC control unit to release the program interlock; and the transition plate is reset to the non-working state; The method for switching to the second connection mode comprises the following steps: When the self-propelled hoist on the second set of welding line tracks moves with the frame toward the main track of the repair welding line, it is first sensed by the detection switch installed on the second set of welding line tracks, and the signal is transmitted to the PLC control unit. The PLC control unit sends a signal to stop the self-propelled hoist on the first set of welding line tracks, forming a program interlock; The PLC control unit controls the ejection cylinder to move the sliding seat to the left until the connecting rod contacts the first limit block. At this time, the second movable track in the sliding seat moves to between the second group of welding line tracks and the main track of the repair welding line. At this time, the second movable track, the second group of welding line tracks and the main track of the repair welding line are in the same motion trajectory; after reaching the position, the transition cylinder acts to push the transition plates at both ends of the second movable track outward until they partially enter the second group of welding line tracks and the main track of the repair welding line; At this time, the first movable track in the sliding seat leaves the moving track of the first group of welding line tracks and the main track of the repair welding line, so that the first group of welding line tracks and the main track of the repair welding line are disconnected, and the blocking plate on the sliding seat forms a blockage for the first group of welding line tracks, ensuring that the self-propelled hoist at the first group of welding line tracks cannot pass through, forming a double self-locking protection on the mechanical structure; When the self-propelled hoist returns to its original position from the main track of the repair welding line, the detection switch senses and transmits the signal to the PLC control unit to release the program interlock; and the transition plate is reset to the non-working state.

Images