A vehicle-mounted double-track device capable of switching feed and a method for switching feed

Abstract

The present application relates to the technical field of track cover laying feeding, in particular to a vehicle-mounted double-track device capable of switching feeding and a switching feeding method, the front ends of first and second vehicle plates are provided with switching assemblies, a cross-shaped track is arranged between the front and rear vehicle plate assemblies, the switching assemblies are located directly below the middle slot holes of the cross-shaped track, and the switching assembly comprises a base, a lifting column and an adjusting seat, beneficial effects are that: the double track capable of switching is arranged to realize double-row feeding of the laying robot, the switching assembly is used to realize mutual rotation and switching of the two groups of transport plates, thereby doubling the feeding, avoiding multiple loading and feeding, greatly improving the efficiency of cover laying, and reducing the loading and switching time.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of track cover laying feeding, in particular to a vehicle-mounted double-track device capable of switching feeding and a switching feeding method. BACKGROUND

[0002] In the process of track construction, a wire slot for wiring is needed, and after the cable laying is completed, a longer wire slot needs to be laid and covered to protect the cable and avoid the cable being exposed.

[0003] Because the length of the track is relatively long, the traditional manual laying is low in efficiency and time-consuming, and the existing technology usually uses an intelligent control mechanical arm to take and lay the cover plate.

[0004] In the prior art, the cover plates are usually stacked on a stacking trolley, and in order to improve the efficiency, a plurality of stacking trolleys are arranged on a longer trolley transport vehicle, so as to facilitate the mechanical arm to take the material, but the length of the trolley limits the number of the stacking trolleys, thereby causing the mechanical arm to be supplied with material in single row, and for a track of hundreds of kilometers, the efficiency is still too low, and it is difficult for the vehicle to go up and down the track once, the transportation distance is long, and it is difficult to meet the needs of laying efficiency. SUMMARY

[0005] The present application aims to provide a vehicle-mounted double-track device capable of switching feeding and a switching feeding method to solve the problems in the background art.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0007] A vehicle-mounted double-track device capable of switching feeding, comprising:

[0008] A laying trolley assembly, comprising a front trolley plate and a rear trolley plate assembly, the rear trolley plate assembly is fixedly connected with the front trolley plate through a connecting seat, the rear trolley plate assembly comprises a first trolley plate and a second trolley plate, the first trolley plate and the second trolley plate are arranged parallel to each other, and the first trolley plate and the second trolley plate are fixedly connected with a spacing therebetween, a plurality of connecting slides are arranged between the first trolley plate and the second trolley plate, and the upper end surfaces of the first trolley plate and the second trolley plate are provided with trolley rails, the upper end surface of the front trolley plate is provided with extension guide rails and trolley rails parallel to each other, and the extension guide rails are opposite to the trolley rails on the upper end of the second trolley plate;

[0009] A laying assembly, comprising a control cabinet and a laying robot, the control cabinet and the laying robot are arranged on the front trolley plate, and the laying robot is slidingly installed on the trolley;

[0010] The transportation assembly comprises a first transportation plate and a second transportation plate, the lower ends of the first transportation plate and the second transportation plate are provided with second motor-driven rollers which roll along the rails, the lower ends of the first transportation plate and the second transportation plate are provided with sliding plates which are inserted into the connecting slide in cooperation, the lower ends of the first transportation plate and the second transportation plate are vertically fixedly connected with jacks at both ends of the lower end faces, the lower ends of the first transportation plate and the second transportation plate are provided with clamping seats, the side wall of the first plate is provided with a side frame, and the side frame is provided with a telescopic push rod which is attached to the first transportation plate.

[0011] The switching assembly is arranged below the middle slot of the cross-shaped track, and the switching assembly comprises a base, a lifting column and an adjusting seat, the base is fixed at the lower end of the cross-shaped track, the lifting column is vertically fixedly installed at the upper end of the base, the upper end of the lifting column is fixedly connected with a first motor-driven rotating seat, and the rotating seat is cooperatively clamped with the clamping seat.

[0012] Preferably, the first plate and the second plate are fixedly connected through a fixing rod, the upper ends of the first transportation plate and the second transportation plate are provided with a plurality of groups of code stacking trolleys which are linearly arranged, and the code stacking trolleys are loaded with laying cover plates.

[0013] Preferably, the upper ends of the first transportation plate and the second transportation plate are provided with limiting sliding rails, the upper ends of the first transportation plate and the second transportation plate are provided with a plurality of groups of positioning insertion holes which are linearly distributed, the code stacking trolleys slide along the limiting sliding rails to the upper ends of the first transportation plate and the second transportation plate, and the code stacking trolleys are vertically inserted with insertion pins which are cooperatively inserted into the positioning insertion holes.

[0014] Preferably, the side frame is located on the side wall of the first plate, the extension direction of the telescopic push rod on the side frame is the same as the extension direction of the connecting slide, the end of the telescopic push rod is provided with a pressing plate which is attached to the side wall of the first transportation plate.

[0015] Preferably, the lower ends of the first transportation plate and the second transportation plate are provided with a pair of pressure bearing plates, the pressure bearing plates are slidably inserted with frame-shaped clamping plates, and the ends of the jacks are fixed on the clamping plates.

[0016] Preferably, the lower ends of the first transportation plate and the second transportation plate are provided with a pair of drive boxes, one end of the roller is bearingly rotatably installed on the outer side of the drive box, and the other end of the roller is connected with a second motor.

[0017] Preferably, the adjusting seat is provided with a double-layer plate assembly, the double-layer plate assembly comprises a lower plate, an upper plate and a connecting rod, the lower plate is fixed at the upper end of the lifting column, the lower plate and the upper plate are fixedly connected through the connecting rod, the rotating seat is rotatably installed at the upper end face of the upper plate, and the first motor is fixedly installed in the interval between the lower plate and the upper plate.

[0018] Preferably, a jack is arranged through the card seat, and a through slot matched with the card seat is arranged in the middle of the rotating seat, and a pair of pneumatic insertion rods are symmetrically arranged on the inner wall of the through slot and are arranged in a pneumatic telescopic mode, and the pneumatic insertion rods are matched with the jack.

[0019] Preferably, the one end of the cross rail is connected with the rail of the upper end of the first and second car plates, and the other end of the cross rail is connected with the extension guide rail.

[0020] A switching feeding method realized by the vehicle-mounted double-rail device capable of switching feeding according to the above, the switching feeding method comprising the following steps:

[0021] S1: a plurality of groups of loading cover plates are transported to the first and second transport plates along the limiting slide rails, and the position of the stacking trolley is limited by the cooperation of the bolt and the positioning jack.

[0022] S2: the first and second transport plates are transported to the first and second car plates through the rollers, when laying, the second transport plate at the upper end of the second car plate is moved to the extension guide rail, and the cover plates at the upper end of the second transport plate are taken and laid by the laying robot;

[0023] S3: when the cover plates at the upper end of the second transport plate are used up, the second transport plate is reversely moved, so that the second transport plate moves to the cross rail, and the card seat is opposite to the adjusting seat, the adjusting seat is driven to be matched with the card seat by the lifting column, and the second transport plate is rotated by 90 degrees under the drive of the first motor, so that the second transport plate is distributed vertically with the first transport plate;

[0024] S4: the rollers on the first transport plate are lifted and separated from the rail by the jack, the first transport plate is vertically slid on the card plate by the transverse pushing of the telescopic push rod, so that the sliding plate moves to the connecting slide, at this time, the jack is retracted, and the first transport plate moves to the upper end of the second car plate under the continuous pushing of the telescopic push rod, when the sliding plate is separated from the connecting slide, the jack is lowered and pressed on the second car plate, at this time, the first transport plate moves to the upper end of the second car plate, the jack is retracted, and the rollers are pressed on the rail at the upper end of the second car plate;

[0025] S5: the rollers of the second transport plate fall on the cross rail, at this time, the card seat is separated from the rotating seat, the second transport plate is driven to slide along the cross rail, so that the card seat on the second transport plate moves to the adjusting seat at the front end of the first car plate, the second transport plate is reset by rotating again, at this time, the second transport plate is located on the first car plate, the lifting column is lowered, so that the rollers of the second transport plate fall on the rail of the first car plate, and the purpose of switching the first and second transport plates is achieved.

[0026] Compared with the prior art, the beneficial effects of the present application are:

[0027] The present application realizes double feeding of the paving robot by setting switchable double tracks, and realizes mutual rotation and switching of the two groups of transport plates by using a switching assembly, thereby improving double feeding, avoiding multiple loading and feeding, greatly improving the efficiency of paving the cover plate, and reducing the loading and switching time. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a top view of the present application;

[0029] Figure 2 is a perspective view of the rear vehicle plate assembly of the present application;

[0030] Figure 3 is Figure 2 is an enlarged view of structure at A;

[0031] Figure 4 is a structure schematic view of the rear vehicle plate assembly of the present application;

[0032] Figure 5 is a structure schematic view of the first transport plate bottom surface of the present application;

[0033] Figure 6 is a perspective view of the first transport plate of the present application;

[0034] Figure 7 is a structure schematic view of the first transport plate of the present application.

[0035] In the figure: 1, first vehicle plate; 2, second vehicle plate; 3, front vehicle plate; 4, track; 5, connecting seat; 6, extension guide rail; 7, first transport plate; 8, stacking trolley; 9, side frame; 10, telescopic push rod; 11, vehicle track; 12, paving robot; 13, control cabinet; 14, adjusting seat; 15, cross track; 16, connecting slide; 17, base; 18, lifting column; 19, limiting slide rail; 20, positioning jack; 21, pressing plate; 22, lower plate; 23, upper plate; 24, connecting rod; 25, first motor; 26, rotating seat; 27, pneumatic inserting rod; 28, fixed rod; 29, clamping seat; 30, second motor; 31, pressure bearing plate; 32, clamping plate; 33, jack; 34, sliding plate; 35, drive box; 36, roller; 37, second transport plate. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0037] Referring to Figures 1 to 7 The present application provides a technical solution:

[0038] A vehicle-mounted double-track device capable of switching feed, characterized in that the vehicle-mounted double-track device comprises a laying vehicle assembly, a laying assembly, a transportation assembly and a switching assembly.

[0039] The laying vehicle assembly comprises a front vehicle plate 3 and a rear vehicle plate assembly, the rear vehicle plate assembly is fixedly connected with the front vehicle plate 3 through a connecting seat 5, the rear vehicle plate assembly comprises a first vehicle plate 1 and a second vehicle plate 2, the first vehicle plate 1 and the second vehicle plate 2 are arranged in parallel with each other and are fixedly connected with each other at intervals, the upper end faces of the first vehicle plate 1 and the second vehicle plate 2 are both provided with vehicle rails 11, the upper end face of the front vehicle plate 3 is provided with an extension guide rail 6 and a track 4 which are parallel with each other, the extension guide rail 6 is opposite to the vehicle rail 11 at the upper end of the second vehicle plate 2, the first vehicle plate 1 and the second vehicle plate 2 are fixedly connected through a fixed rod 28, the upper ends of a first transportation plate 7 and a second transportation plate 37 are both provided with a plurality of groups of linearly arranged stacking trolleys 8, the stacking trolleys 8 are loaded with laying cover plates.

[0040] The first vehicle plate 1 and the second vehicle plate 2 are fixedly connected in parallel at intervals through the fixed rod 28, the cover plates are loaded by the stacking trolleys 8, and the first transportation plate 7 and the second transportation plate 3 are limitedly moved on the first vehicle plate 1 and the second vehicle plate 2 by the vehicle rails 11.

[0041] The upper ends of the first transportation plate 7 and the second transportation plate 37 are provided with limiting slide rails 19, the upper ends of the first transportation plate 7 and the second transportation plate 37 are provided with a plurality of groups of linearly distributed positioning insertion holes 20, the stacking trolleys 8 slide along the limiting slide rails 19 to the upper ends of the first transportation plate 7 and the second transportation plate 37, and the stacking trolleys 8 are vertically inserted with the insertion pins which are cooperatively inserted with the positioning insertion holes 20.

[0042] The positions of the stacking trolleys 8 sliding on the first transportation plate 7 and the second transportation plate 37 are limited by the limiting slide rails 19, the positions of the stacking trolleys 8 are limited by the cooperation of the insertion pins and the positioning insertion holes 20, and the neat fixed arrangement of the plurality of groups of stacking trolleys 8 is realized.

[0043] The laying assembly comprises a control cabinet 13 and a laying robot 12, the control cabinet 13 and the laying robot 12 are both arranged on the front vehicle plate 3, the laying robot 12 is slidingly installed on the track 4, the transportation assembly comprises the first transportation plate 7 and the second transportation plate 37, the lower ends of the first transportation plate 7 and the second transportation plate 37 are provided with rollers 36 driven by a second motor 30, the rollers 36 roll along the vehicle rails 11, the lower ends of the first transportation plate 7 and the second transportation plate 37 are provided with a pair of drive boxes 35, one end bearings of the rollers 36 are rotatably installed on the outer sides of the drive boxes 35, and the other ends of the rollers 36 are connected with the second motor 30.

[0044] The movement on the first transport plate 7 and the second transport plate 37 is realized by the roller 36. During laying, the second transport plate 37 is first transported along the track 11, the extension guide rail 6 to the front trolley plate 3, and the laying robot 12 is used to take materials in the stacking trolley 8 for laying, and the sliding of the laying robot 12 on the track 4 is used to adapt the stacking trolley 8 in different positions.

[0045] A plurality of connecting slides 16 are arranged between the first trolley plate 1 and the second trolley plate 2, the lower end of the first transport plate 7 and the second transport plate 37 is provided with a sliding plate 34 matched with the connecting slide 16, the lower end of the first transport plate 7 and the second transport plate 37 is vertically fixedly connected with a jack 33 at both ends of the lower end face, the lower end of the first transport plate 7 and the second transport plate 37 is provided with a pair of pressure plates 31, the pressure plates 31 are slidingly inserted with a frame-shaped clamping plate 32, and the end of the jack 33 is fixed on the clamping plate 32.

[0046] Through the extension and retraction of the jack 33, the connection and switching of the roller 36 and the track 11 are realized, the sliding plate 34 and the connecting slide 16 are matched to achieve the limiting and supporting effect of transverse propulsion, and the clamping plate 32 and the pressure plate 31 are matched and slidingly inserted to achieve the purpose of adapting the switching support of the jack 33.

[0047] The side wall of the first trolley plate 1 is provided with a side frame 9, the side frame 9 is provided with a telescopic push rod 10 matched with the first transport plate 7, the side frame 9 is located on the side wall of the first trolley plate 1, and the extension direction of the telescopic push rod 10 on the side frame 9 is the same as the extension direction of the connecting slide 16, and the end of the telescopic push rod 10 is provided with a pressure plate 21 matched with the side wall of the first transport plate 7.

[0048] The telescopic push rod 10 is fixed by the side frame 9, and the telescopic push rod 10 and the pressure plate 21 are matched to realize the switching of the transverse position.

[0049] The lower end of the first transport plate 7 and the second transport plate 37 is provided with a clamping seat 29, the front end of the first trolley plate 1 and the second trolley plate 2 is provided with a switching assembly, the front trolley plate 3 and the rear trolley plate assembly are provided with a cross rail 15, the switching assembly is located below the middle slot of the cross rail 15, one end of the cross rail 15 is connected with the track 11 on the upper end of the first trolley plate 1 and the second trolley plate 2, and the other end of the cross rail 15 is connected with the extension guide rail 6.

[0050] The cross rail 15 is arranged to facilitate the vertical sliding switching after rotation adjustment.

[0051] The switching assembly comprises a base 17 fixed at the lower end of the cross rail 15, a lifting column 18 vertically fixed and installed at the upper end of the base 17, a rotating seat 26 fixedly connected at the upper end of the lifting column 18 and driven by a first motor 25, a clamping seat 29 which is cooperatively clamped with the rotating seat 26, a plug hole provided through the clamping seat 29, a through slot provided in the middle of the rotating seat 26 and cooperatively clamped with the clamping seat 29, and a pair of pneumatic insertion rods 27 symmetrically provided on the inner wall of the through slot and pneumatically installed.

[0052] The pneumatic insertion rods 27 are provided to cooperatively insert the clamping seat 29, thereby realizing stable rotary connection.

[0053] A double-layer plate assembly is provided in the adjusting seat 14, which comprises a lower plate 22, an upper plate 23 and a connecting rod 24, the lower plate 22 is fixed at the upper end of the lifting column 18, the lower plate 22 and the upper plate 23 are fixedly connected through the connecting rod 24, the rotating seat 26 is rotatably installed at the upper end surface of the upper plate 23, and the first motor 25 is fixedly installed in the interval between the lower plate 22 and the upper plate 23.

[0054] The lifting driving of the lifting column 18 is used to cooperatively insert the clamping seat 29 with the rotating seat 26, and the second transport plate 37 is lifted at the same time, the first motor 25 is used to drive the second transport plate 37 to rotate, then the lifting column 18 is lowered, so that the second transport plate 37 slides along the cross rail 15 to the end of the first car plate 1, through reset rotation, the purpose of rotary switching is achieved.

[0055] Working process: the switching feeding method comprises the following steps:

[0056] S1: a plurality of loading cover plate stacking trolleys 8 are transported to the first transport plate 7 and the second transport plate 37 along the limiting slide rail 19, the position of the stacking trolley 8 is limited by the cooperation of the latch and the positioning plug hole 20;

[0057] S2: the first transport plate 7 and the second transport plate 37 are transported to the first car plate 1 and the second car plate 2 through the roller 36, when laying, the second transport plate 37 at the upper end of the second car plate 2 is moved into the extension guide rail 6, and the cover plate at the upper end of the second transport plate 37 is taken and laid by the laying robot 12;

[0058] S3: when the cover plate at the upper end of the second transport plate 37 is used up, the second transport plate 37 is moved reversely, so that the second transport plate 37 moves to the cross rail 15, the clamping seat 29 is opposite to the adjusting seat 14 by the driving of the lifting column 18, at this time the second transport plate 37 is lifted, the roller 36 on the second transport plate 37 is separated from the car rail 11, under the driving of the first motor 25, the second transport plate 37 is rotated by 90 degrees, so that the second transport plate 37 is distributed vertically with the first transport plate 7;

[0059] S4: the first transport plate 7 is lifted by the jack 33 and the roller 36 is separated from the rail 11, the first transport plate 7 is vertically slid on the clamping plate 32 by the lateral pushing of the telescopic push rod 10, the slide plate 34 is moved to the connecting slide 16, at this time the jack 33 is retracted, the first transport plate 7 is moved to the upper end of the second transport plate 2 by the continuous pushing of the telescopic push rod 10, when the slide plate 34 is separated from the connecting slide 16, the jack 33 is lowered and pressed on the second transport plate 2, at this time the first transport plate 7 is moved to the upper end of the second transport plate 2, the jack 33 is retracted, the roller 36 is pressed on the rail 11 at the upper end of the second transport plate 2;

[0060] S5: the lifting column 18 is lowered, the roller 36 of the second transport plate 37 falls on the cross rail 15, at this time the clamping seat 29 is separated from the rotating seat 26, the second transport plate 37 is driven to slide on the cross rail 15, the clamping seat 29 on the second transport plate 37 is moved to the adjusting seat 14 at the front end of the first transport plate 1, the clamping seat 29 is clamped again by the lifting of the lifting column 18, the second transport plate 37 is rotated by 90 degrees, at this time the second transport plate 37 is located on the first transport plate 1, the lifting column 18 is lowered, the roller 36 of the second transport plate 37 falls on the rail 11 of the first transport plate 1, the purpose of switching the second transport plate 37 and the first transport plate 7 is achieved.

[0061] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vehicle-mounted dual-track device with switchable feeding, characterized in that: The vehicle-mounted dual-track device includes: The paving vehicle assembly includes a front plate (3) and a rear plate assembly. The rear plate assembly is fixedly connected to the front plate (3) via a connecting seat (5). The rear plate assembly includes a first plate (1) and a second plate (2). The first plate (1) and the second plate (2) are arranged parallel to each other and are fixedly connected at intervals. Multiple sets of connecting slides (16) are provided between the first plate (1) and the second plate (2). The upper surfaces of the first plate (1) and the second plate (2) are provided with rails (11). The upper surface of the front plate (3) is provided with parallel extension guides (6) and tracks (4). The extension guides (6) are directly opposite the rails (11) at the upper end of the second plate (2). The laying assembly includes a control cabinet (13) and a laying robot (12), both of which are mounted on the front plate (3), and the laying robot (12) is slidably mounted on the track (4). The transportation assembly includes a first transportation plate (7) and a second transportation plate (37). The lower ends of the first transportation plate (7) and the second transportation plate (37) are provided with rollers (36) driven by a second motor (30). The rollers (36) roll along the rail (11). The lower ends of the first transportation plate (7) and the second transportation plate (37) are provided with sliding plates (34) that are engaged with connecting slides (16). The lower ends of the first transportation plate (7) and the second transportation plate (37) are vertically fixed with jacks (33). The middle of the lower ends of the first transportation plate (7) and the second transportation plate (37) is provided with a card seat (29). The side wall of the first vehicle plate (1) is provided with a side frame (9). The side frame (9) is provided with a telescopic push rod (10) that fits the first transportation plate (7). The switching assembly is provided at the front end of the first vehicle plate (1) and the second vehicle plate (2). A grid track (15) is provided between the front vehicle plate (3) and the rear vehicle plate assembly. The switching assembly is located directly below the middle slot of the grid track (15). The switching assembly includes a base (17), a lifting column (18) and an adjusting seat (14). The base (17) is fixed at the lower end of the grid track (15). The lifting column (18) is vertically fixed at the upper end of the base (17). The upper end of the lifting column (18) is fixedly connected to a rotating seat (26) driven by the first motor (25). The rotating seat (26) and the card seat (29) can be engaged.

2. The vehicle-mounted dual-track device with switchable feeding according to claim 1, characterized in that: The first car plate (1) and the second car plate (2) are fixedly connected by a fixing rod (28). The upper ends of the first transport plate (7) and the second transport plate (37) are provided with multiple sets of palletizing trolleys (8) arranged in a linear fashion. The palletizing trolleys (8) are loaded with laying cover plates.

3. The vehicle-mounted dual-track device with switchable feeding according to claim 2, characterized in that: The upper ends of the first transport plate (7) and the second transport plate (37) are provided with limit slide rails (19), and the upper ends of the first transport plate (7) and the second transport plate (37) are provided with multiple sets of linearly distributed positioning holes (20). The palletizing trolley (8) slides along the limit slide rails (19) to the upper ends of the first transport plate (7) and the second transport plate (37). The palletizing trolley (8) is vertically inserted with pins that cooperate with the positioning holes (20).

4. The vehicle-mounted dual-track device with switchable feeding according to claim 3, characterized in that: The side frame (9) is located on the side wall of the first vehicle plate (1), and the extension direction of the telescopic push rod (10) on the side frame (9) is the same as the extension direction of the connecting slide (16). The end of the telescopic push rod (10) is provided with a pressure plate (21), which is attached to the side wall of the first transport plate (7).

5. A vehicle-mounted dual-track device with switchable feeding according to claim 4, characterized in that: The lower ends of the first transport plate (7) and the second transport plate (37) are provided with a pair of pressure plates (31), and a frame-shaped clamping plate (32) is slidably inserted on the pressure plate (31). The end of the jack (33) is fixed on the clamping plate (32).

6. A vehicle-mounted dual-track device with switchable feeding according to claim 5, characterized in that: A pair of drive boxes (35) are provided at the lower ends of the first transport plate (7) and the second transport plate (37). One end of the roller (36) is rotatably mounted on the outside of the drive box (35), and the other end of the roller (36) is connected to the second motor (30).

7. A vehicle-mounted dual-track device with switchable feeding according to claim 6, characterized in that: The adjusting seat (14) is provided with a double-layer plate assembly, which includes a lower plate (22), an upper plate (23) and a connecting rod (24). The lower plate (22) is fixed to the upper end of the lifting column (18). The lower plate (22) and the upper plate (23) are fixedly connected at intervals by the connecting rod (24). The rotating seat (26) is rotatably installed on the upper end face of the upper plate (23). The first motor (25) is fixedly installed in the interval between the lower plate (22) and the upper plate (23).

8. A vehicle-mounted dual-track device with switchable feeding according to claim 7, characterized in that: The card holder (29) has a through hole, and the rotating seat (26) has a through groove in the middle that engages with the card holder (29). A pair of pneumatic telescopic rods (27) are symmetrically arranged on the inner wall of the through groove, and the pneumatic rods (27) engage with the through hole.

9. A vehicle-mounted dual-track device with switchable feeding according to claim 8, characterized in that: One end of the grid track (15) is connected to the rail (11) at the upper end of the first car plate (1) and the second car plate (2), respectively, and the other end of the grid track (15) is connected to the extension guide rail (6).

10. A switching feeding method implemented by the vehicle-mounted dual-track device with switchable feeding as described in claim 9, characterized in that: The feeding switching method includes the following steps: S1: Transport multiple sets of palletizing trolleys (8) loaded with cover plates along the limiting slide rail (19) to the first transport plate (7) and the second transport plate (37), and use the cooperation of the pin and the positioning hole (20) to limit the position of the palletizing trolley (8); S2: The first transport plate (7) and the second transport plate (37) are transported to the first car plate (1) and the second car plate (2) by rollers (36). During the laying, the second transport plate (37) at the top of the second car plate (2) is moved to the extension guide rail (6), and the laying robot (12) is used to pick up and lay the cover plate at the top of the second transport plate (37). S3: When the upper cover of the second transport plate (37) is used up, the second transport plate (37) is moved in the opposite direction, so that the second transport plate (37) moves to the grid track (15) and the card seat (29) is facing the adjustment seat (14). The lifting column (18) drives the adjustment seat (14) to engage with the card seat (29). Under the drive of the first motor (25), the second transport plate (37) is rotated 90 degrees, so that the second transport plate (37) is perpendicular to the first transport plate (7). S4: The rollers (36) on the first transport plate (7) are lifted by the jack (33) and disengaged from the rail (11). The first transport plate (7) slides vertically on the clamp plate (32) by the lateral push of the telescopic push rod (10), so that the slide plate (34) moves to the connecting slide (16). At this time, the jack (33) retracts. As the telescopic push rod (10) continues to push, the first transport plate (7) moves to the upper end of the second plate (2). When the slide plate (34) disengages from the connecting slide (16), the jack (33) descends and presses against the second plate (2). At this time, the first transport plate (7) moves to the upper end of the second plate (2). The jack (33) retracts, so that the rollers (36) press against the rail (11) at the upper end of the second plate (2). S5: The roller (36) of the second transport plate (37) falls on the grid track (15). At this time, the card holder (29) separates from the rotating seat (26), driving the second transport plate (37) to slide along the grid track (15), so that the card holder (29) on the second transport plate (37) moves to the adjusting seat (14) at the front end of the first car plate (1). By locking and rotating again, the second transport plate (37) is reset and rotated 90 degrees. At this time, the second transport plate (37) is located on the first car plate (1), and the lifting column (18) descends, so that the roller (36) of the second transport plate (37) falls on the car rail (11) of the first car plate (1), thus achieving the purpose of switching the second transport plate (37) and the first transport plate (7).

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