CN110510544B - A logistics transport vehicle suitable for automated production lines - Google Patents

Abstract

The invention discloses a logistics transport vehicle suitable for an automatic production line, which relates to the field of logistics transport equipment and comprises a vehicle frame, a lifting assembly, a limiting assembly, a supporting assembly and a conveying assembly, wherein the lifting assembly adopts a double-shear fork lifting mechanism, the supporting area of a lifting platform is enlarged, the weight borne by the lifting platform is increased, the stable ascending and descending motion of the lifting platform when a heavy-load type goods shelf is borne is ensured, along with the ascending and descending motion of the lifting assembly, the functions of the limiting component and the supporting component can be synchronously and orderly realized, when the goods shelf is placed on the transport vehicle or the goods shelf is transshipped, the carrier vehicle can be fixed without shaking along with external interference, and the goods shelf in the carrier vehicle is limited to ensure the safety of transportation, meanwhile, the linkage mechanism embodies that the structure of the transport vehicle is more simplified and reasonable, and the goods shelf can be conveyed to an automatic production line stably, safely and smoothly.

Description

A logistics transport vehicle suitable for automated production lines

technical field

The invention relates to the field of logistics transportation equipment, in particular to a logistics transportation vehicle suitable for automatic production lines.

Background technique

With the rapid development of the industry, automated production lines are widely used in production. The racks with parts are directly transported to the production line through the conveyor line, and the parts in the racks are automatically grabbed by industrial robots to realize robot assembly. The environment and the transportation of the shelves have higher requirements. Transporting racks with parts to the production line by forklift is obviously not suitable for automated production workshops. First of all, the forklift will generate noise, vibration and exhaust gas in the process of working, which will seriously pollute the workshop environment and also affect the working performance of the precision equipment in the automated production workshop. The shelves are transported smoothly and safely to the automated production line.

However, in the existing transport vehicle, since the wheels are in contact with the ground, and there is no fixed mechanism and limit mechanism on the transport vehicle, when the rack is placed on the transport vehicle or the rack is transferred from the transport vehicle, the friction between the wheels and the ground is not enough. The transport vehicle will be offset and shaken, and the shelf may slip with the shaking of the transport vehicle, posing a safety hazard.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a logistics transport vehicle suitable for an automated production line, so as to solve the above-mentioned defects caused in the prior art.

A logistics transport vehicle suitable for an automated production line includes a frame, a lift assembly, a limit assembly, a support assembly and a conveying assembly, the frame includes a bottom plate, wheels and push rods, and the bottom plate is composed of two long horizontal bars and Two short crossbars are welded, the right side of the two long crossbars are provided with positioning pieces, and the left side of the long crossbar is provided with a circular hole, and the side between the two long crossbars is close to the side of the left short crossbar A supporting rod is provided, and a supporting rod 2 is provided on the side between the two long transverse rods near the right short transverse rod;

The lifting assembly is installed on two long cross bars, and the lifting assembly includes two symmetrically arranged double scissor lifting mechanisms and a lifting platform, and the lifting platform is arranged on the upper part of the two double scissor lifting mechanisms;

The lower part of the limiting assembly is installed on the left side of the first support rod, and the upper part is installed on the left end of the top of the lifting platform, and is used to limit the shelf on the lifting assembly when the lifting assembly rises;

The support assembly has two groups, one part of which is installed on the lifting platform, and the other part is installed on the bottom plate, which is used to fix the whole frame when the lifting assembly rises;

The conveying assembly is installed on the top of the lifting platform and is used for conveying the racks.

Preferably, the double scissor lift mechanism includes a first X-shaped scissor arm, a second X-shaped scissor arm, a fixed block, a sliding block and an electric push rod, the upper and lower parts of the left side of the first X-shaped scissor arm are respectively connected with the two The two fixed blocks are connected to the bottom of the lifting platform and the top of the long cross bar respectively. The right side of the X-shaped scissor arm 1 and the left side of the X-shaped scissor arm 2 are connected by the sliders between them, and the upper and lower sliders are respectively connected to the lifting platform and the long cross bar correspondingly. On the slide rail, the output end of the electric push rod is threadedly connected with the upper part of the X-shaped scissor arm.

Preferably, the front part of the electric push rod passes through a circular hole on the long cross rod, and two sides of the electric push rod are hinged with mounting brackets for installing the electric push rod on the first bracket, and the first bracket is installed on the long cross rod .

Preferably, the first X-shaped scissor arm and the second X-shaped scissor arm are formed by the intersection of two connecting rods to form an X shape, and the two connecting rods are rotatably connected.

Preferably, the lifting assembly includes a first connecting rod, a second connecting rod, a third connecting rod, a positioning pin telescopic mechanism and a mounting plate, the lower part of the first connecting rod is installed on the left side of the first supporting rod, and the second connecting rod The connecting rod 3 and the connecting rod 3 are symmetrically arranged at the center of the connecting rod 1, and one end of the connecting rod 2 and the connecting rod 3 is rotatably connected with the output end of the connecting rod 1, and the other ends of the connecting rod 2 and the connecting rod 3 are respectively connected with the output of the positioning pin telescopic mechanism. The two positioning pin telescopic mechanisms are respectively mounted on two mounting plates, and the two mounting plates are mounted on the left end of the top of the lifting platform.

Preferably, the positioning pin telescopic mechanism includes a positioning pin, a spring and a guide sleeve, the spring is installed in the guide sleeve, the positioning pin passes through the spring and is slidably connected to the guide sleeve, and the output ends of the two positioning pins There are pins connected with the second connecting rod and the third connecting rod respectively.

Preferably, the support assembly includes a fourth connecting rod, a fifth connecting rod, a sixth connecting rod, a seventh connecting rod and a support seat, the top of the fourth connecting rod is mounted on the bottom of the short cross bar of the lifting platform, and the fifth connecting rod rotates Connected between connecting rod four and connecting rod six, the middle part of connecting rod six is rotatably connected with connecting rod seven, the output end of connecting rod six is rotatably connected with the support seat, and the top of the connecting rod seven is correspondingly installed on the support rod One and the side of the second support rod.

Preferably, the conveying assembly includes a sprocket, a double-row sprocket, a double-row sprocket, a double-row sprocket, a double-row sprocket, a motor, a chain 1, a chain 2, a rotating shaft, a bracket 2, and a traveling wheel. , a number of said brackets are arranged equidistantly along the direction of the long cross bar of the lifting platform, and one side of the four said rotating shafts is respectively connected with the first double-row sprocket, the second double-row sprocket, the third double-row sprocket and the fourth double-row sprocket. Connection, the output end of the rotating shaft is connected with the traveling wheel, the traveling wheel is arranged on the inner side of the bracket 2, and the three chains are staggered and connected to the double-row chain wheel 1, the double-row chain wheel 2, the double-row chain wheel 3, and the double-row chain wheel. In the fourth sprocket, the output end of the motor is connected with the sprocket, and the second chain connects the sprocket with the first double-row sprocket.

Preferably, one end of the traveling wheel is provided with a limiting portion, the rest is a traveling portion, the outer diameter of the limiting portion is greater than the outer diameter of the traveling portion, and the height of the top of the traveling portion is greater than the height of the top of the second bracket.

Preferably, the wheel includes a directional wheel and a universal wheel, the directional wheel is arranged under the right side of the bottom plate, and the universal wheel is arranged under the left side of the bottom plate.

The advantages of the present invention are:

1. The lifting component adopts double scissor lifting mechanism, which expands the supporting area of the lifting platform and increases the weight carried by the lifting platform, ensuring that the lifting platform can smoothly ascend and descend when it carries heavy-duty racks.

2. The limit component can achieve two different states with the lifting movement of the lifting component. When the lifting component moves down, the positioning pin telescopic mechanism descends, the spring resets, and the positioning pin retracts to the original position; when the lifting component moves upward, The positioning pin telescopic mechanism rises, the spring compresses, and the two positioning pins are pulled out by the second and third connecting rods respectively, beyond the left end face of the shelf, and play a limiting role on the shelf.

3. The support assembly can also achieve two different states with the lifting movement of the lifting assembly. When the lifting assembly descends, the connecting rod four in the supporting assembly descends with the lifting platform, and the connecting rod seven is fixed on the bottom plate of the frame, and is connected to the bottom of the frame. Rod 5 and connecting rod 6 are turned back, the support seat is off the ground, and the rack is placed on the traveling wheel of the conveying assembly. The two stacking feet on the right end of the rack are inserted into the positioning pieces on the bottom plate to position the rack. The shelves are transported stably and safely to the corresponding automatic production line docking port; when the lifting assembly moves up, the fourth connecting rod in the support assembly rises with the lifting platform, and the seventh connecting rod is fixed on the bottom plate of the frame, and the fifth connecting rod is connected with the connecting rod. Rod 6 rotates and the support base contacts the ground, so that the transporter is fixed on the ground, preventing the transporter from shaking, and starting the conveying assembly, the shelves in the transporter can be smoothly and safely transported to the automated production line.

With the lifting movement of the lifting component, the linkage between the limit component and the support component can be realized. It is not necessary to design the driving mechanism of the limit component and the support component separately, and the functions of the limit component and the support component can be realized synchronously and orderly. When arriving on the transport vehicle or reloading the shelf, the support seat in the support component contacts the ground to increase the friction force, and the transport vehicle can be fixed without shaking with external interference. The limit component limits the shelf in the transport vehicle to ensure The safety of transportation, at the same time, this linkage mechanism reflects the more streamlined and reasonable structure of the transport vehicle.

Description of drawings

FIG. 1 is a schematic structural diagram of a logistics transport vehicle (after the lifting component is raised) suitable for an automated production line according to the present invention.

FIG. 2 is a schematic structural diagram of the frame of the present invention.

FIG. 3 is a schematic structural diagram of the present invention when the support assembly plays a supporting role (after the lift assembly is raised).

FIG. 4 is a schematic structural diagram of the present invention when the limiting component plays a limiting role (after the lifting component is raised).

FIG. 5 is a cross-sectional view of two states of extension and retraction of the positioning pin telescopic mechanism of the present invention.

FIG. 6 is a schematic structural diagram of the lifting assembly of the present invention after being lifted.

7 and 8 are schematic diagrams of the structure of the conveying assembly of the present invention.

FIG. 9 is a schematic diagram of the structure of the rack transported by the transport vehicle of the present invention.

FIG. 10 is a schematic structural diagram of the lifting assembly of the present invention (when transporting the rack) after being lowered.

FIG. 11 is a schematic structural diagram of the lifting assembly after the descending of the present invention (when transporting the rack).

Among them: 1-car frame, 2-lifting component, 3-limiting component, 4-support component, 5-conveying component, 6-bottom plate, 7-wheel, 8-push rod, 9-long crossbar, 10-short crossbar Rod, 11-positioning piece, 12-circular hole, 13-support rod one, 14-support rod two, 15-double scissor lift mechanism, 16-lifting platform, 17-connecting rod one, 18-connecting rod two, 19-Link three, 20-Positioning pin telescopic mechanism, 21-Installation plate, 22-Link four, 23-Link five, 24-Link six, 25-Link seven, 26-Support seat, 27-X 1-shaped scissor arm, 28-X-shaped scissor arm 2, 29-fixed block, 30-slider, 31-electric push rod, 32-support one, 33-positioning pin, 34-spring, 35-guide sleeve, 36-sprocket, 37-double-row sprocket one, 38-double-row sprocket two, 39-double-row sprocket three, 40-double-row sprocket four, 41-motor, 42-chain one, 43-chain two , 44-shaft, 45-support two, 46-walking wheel, 47-limiting part, 48-walking part, 49-directional wheel, 50-universal wheel.

Detailed ways

The present invention will be further described below with reference to the accompanying drawings and examples. The embodiments of the present invention include but are not limited to the following examples.

As shown in FIG. 1 to FIG. 11 , a logistics transport vehicle suitable for an automated production line includes a frame 1 , a lifting assembly 2 , a limit assembly 3 , a support assembly 4 and a conveying assembly 5 , and the frame 1 includes a bottom plate 6 , wheel 7 and push rod 8, the bottom plate 6 is welded by two long cross bars 9 and two short cross bars 10, the right side of the two long cross bars 9 are provided with positioning members 11, and the long cross bars 9 The left side is provided with a circular hole 12, a support rod 13 is provided between the two long cross bars 9 on the side close to the left short cross bar 10, and a support bar 13 is provided between the two long cross bars 9, which is close to the right short cross bar 10. The side is provided with a support rod two 14;

The lift assembly 2 is mounted on two long cross bars 9 , the lift assembly 2 includes two symmetrically arranged double scissor lift mechanisms 15 and a lift platform 16 , and the lift platform 16 is arranged between the two double scissor lift mechanisms 15 . upper part;

The lower part of the limiting assembly 3 is installed on the left side of the support rod one 13, and the upper part is installed on the left end of the top of the lifting platform 16, and is used to limit the shelf on the lifting assembly 2 when the lifting assembly 2 rises;

The support assembly 4 has two groups, one part of which is installed on the lifting platform 16, and the other part is installed on the bottom plate 6, for fixing the entire vehicle frame when the lifting assembly 2 rises;

The conveying assembly 5 is installed above the lifting platform 16 for conveying the racks.

In this embodiment, the double scissor lift mechanism 15 includes a first X-shaped scissor arm 27 , a second X-shaped scissor arm 28 , a fixed block 29 , a sliding block 30 and an electric push rod 31 . The upper and lower parts of the left side of the arm one 27 are respectively connected with two fixing blocks 29, the two fixing blocks 29 are respectively fixed on the bottom of the lifting platform 16 and the top of the long cross bar 9, and the right side of the X-shaped scissor arm two 28 The upper and lower parts are respectively connected with the two sliders 30 located on the right side, the right side of the X-shaped scissor arm 27 is connected with the left side of the X-shaped scissor arm 28 through the slider 30 between them, The upper and lower sliding blocks 30 are respectively slidably connected to the lifting platform 16 and the slide rails on the long cross bar 9. The output end of the electric push rod 31 is threadedly connected to the upper part of the X-shaped scissor arm-27. The first X-shaped scissor arm 27 and the second X-shaped scissor arm 28 are formed by the intersection of two connecting rods to form an X shape, and the two connecting rods are connected in rotation. 27 The connecting rod on the upper left side is connected, the front part of the electric push rod 31 passes through the circular hole 12 on the long cross bar 9, and the two sides of the electric push rod 31 are hinged to install the electric push rod 31 on the bracket one 32 The mounting bracket, the bracket one 32 is installed on the long cross bar 9, and the double scissor lifting mechanism 15 is adopted, which expands the supporting area of the lifting platform 16 and increases the weight carried by the lifting platform 16, ensuring that the lifting platform 16 can carry heavy-duty racks It can move up and down smoothly.

In this embodiment, the limiting assembly 3 includes a first link 17 , a second link 18 , a third link 19 , a positioning pin telescopic mechanism 20 and a mounting plate 21 , and the lower part of the first link 17 is mounted on a support rod On the left side of the first 13, the second connecting rod 18 and the third connecting rod 19 are symmetrically arranged in the center of the connecting rod one 17, and one end of the second connecting rod 18 and the third connecting rod 19 is rotatably connected with the output end of the first connecting rod 17, The other ends of the second connecting rod 18 and the third connecting rod 19 are respectively connected with the output end of the positioning pin telescopic mechanism 20 , and the two positioning pin telescopic mechanisms 20 are respectively installed on two mounting plates 21 . Installed on the left end of the top of the lifting platform 16, the positioning pin telescopic mechanism 20 includes a positioning pin 33, a spring 34 and a guide sleeve 35, the spring 34 is installed in the guide sleeve 35, the positioning pin 33 passes through the spring 34 and is connected with the guide sleeve 35. The guide sleeve 35 is slidably connected, and the output ends of the two positioning pins 33 are respectively provided with pins connected to the second connecting rod 18 and the third connecting rod 19 . The spring 34 is compressed, and the two positioning pins 33 are elongated by the second connecting rod 18 and the third connecting rod 19 respectively, and extend beyond the left end face of the shelf to limit the position of the shelf.

In this embodiment, the support assembly 4 includes a fourth connecting rod 22 , a fifth connecting rod 23 , a sixth connecting rod 24 , a seventh connecting rod 25 and a support base 26 , and the top of the fourth connecting rod 22 is installed at the bottom of the lifting platform 16 . At the bottom of the cross bar, the fifth connecting rod 23 is rotatably connected between the fourth connecting rod 22 and the sixth connecting rod 24, the middle part of the sixth connecting rod 24 is rotatably connected with the seventh connecting rod 25, and the output end of the sixth connecting rod 24 is connected to the The support base 26 is rotatably connected, and the tops of the seventh connecting rods ( 25 ) are respectively installed on the sides of the first support rod 13 and the second support rod 14 .

In this embodiment, the conveying assembly 5 includes a sprocket 36 , a first double-row sprocket 37 , a second double-row sprocket 38 , a third double-row sprocket 39 , a fourth double-row sprocket 40 , a motor 41 , and a first chain 42 , chain two 43, rotating shaft 44, bracket two 45 and walking wheel 46, a plurality of said bracket two 45 are arranged equidistantly along the direction of the long cross bar of the lifting platform 16, one side of the four said rotating shafts 44 is respectively connected with the double row sprocket one 37. The second double-row sprocket 38, the third double-row sprocket 39 and the fourth double-row sprocket 40 are connected, and the output end of the rotating shaft 44 is connected with the walking wheel 46, which is arranged on the inner side of the bracket two 45, and the three The chain one 42 is alternately connected to the double-row sprocket 1 37 , the double-row sprocket 2 38 , the double-row sprocket 39 and the double-row sprocket 4 40 , the output end of the motor 41 is connected to the sprocket 36 , the The second chain 43 connects the sprocket 36 with the first double-row sprocket 37, and the first chain 42 connects multiple double-row sprockets alternately, so as to realize the smooth transmission of the multiple traveling wheels.

In this embodiment, one end of the traveling wheel 46 is provided with a limiting portion 47, and the rest is the traveling portion 48. The outer diameter of the limiting portion 47 is larger than the outer diameter of the traveling portion 48, and the height of the top of the traveling portion 48 is greater than that of the bracket The height of the top of the second 45 ensures that the shelves always run on the walking part 48, and the shelves can be safely and smoothly transported to the automated production line.

In this embodiment, the wheel 7 includes a directional wheel 49 and a universal wheel 50. The directional wheel 49 is arranged under the right side of the bottom plate 6, and the universal wheel 50 is arranged under the left side of the bottom plate 6. During the transportation of the vehicle, the transportation direction can be flexibly adjusted through the universal wheel 50, and the directional wheel 49 can be used to reach the designated position.

The working process and principle of the present invention are as follows:

The limit component 3 and the support component 4 can achieve two different states with the lifting movement of the lifting component 2, which can transport the shelves in the transport vehicle to the automatic production line smoothly, safely and smoothly. The lifting component 2 adopts double scissors to lift. Mechanism 15, double scissor lift mechanism 15 is mainly composed of X-shaped scissor arm 1 27 and X-shaped scissor arm 2 28 through the connection of fixed block 29 and slider 30.

When the lifting assembly 2 moves down, the connecting rod four 22 in the supporting assembly 4 descends with the lifting platform 16, the connecting rod seven 25 is fixed on the bottom plate 6 of the frame 1, and is turned back through the connecting rod five 23 and the connecting rod six 24, and the support seat 26 is released from the ground, and at the same time, the positioning pin telescopic mechanism 20 in the limiting assembly 3 descends, the spring 34 in the guide sleeve 35 is reset, and the positioning pin 33 is retracted to the original position.

When the rack needs to be transferred, place the rack on the traveling wheel 46 of the conveying assembly 5 through professional equipment, and insert the two stacking feet on the right end of the rack into the positioning member 11 to position the rack on the traveling wheel 46, and push the transport vehicle to move the rack. It is transported to the line-to-line interface of the automated production line; start the electric push rod 31 to extend the electric push rod 31, push the upper part of the X-shaped scissor arm 1 27 to move upward, and then the double scissor lift mechanism 15 moves upward, and the shelf follows the lifting platform 16. When the lifting platform 16 rises to the highest point, the two stacking feet at the right end of the shelf are pulled out from the positioning member 11, and at the same time, the connecting rod 4 22 in the support assembly 4 rises with the lifting platform 16, connecting The rod seven 25 is fixed on the bottom plate 6 of the frame 1, and is rotated by the connecting rod five 23 and the connecting rod six 24, and the support seat 26 is in contact with the ground, so that the transport vehicle is fixed on the ground to prevent the transport vehicle from shaking, and the positioning pin telescopic mechanism 20 Ascending, the spring 34 in the guide sleeve 35 is compressed, and the two positioning pins 33 are respectively elongated by the second connecting rod 18 and the third connecting rod 19, beyond the left end face of the shelf, to limit the shelf, start the motor 41, and pass the chain two 43 The transmission drives the double-row sprocket 1 37 to rotate, and then drives the double-row sprocket 2 38, the double-row sprocket 39 and the double-row sprocket 4 40 to rotate through the transmission of the chain 1 42, and drives the walking wheel 46 through the rotating shaft 44. Rotating, one end of the traveling wheel 46 is provided with a limiting portion 47 to ensure that the rack always runs on the traveling portion 48, and the rack is safely and smoothly transported to the automated production line.

According to the above-mentioned embodiment, the present invention can be well realized. It is worth noting that, under the premise of the above-mentioned structural design, in order to solve the same technical problem, even if some insubstantial changes or embellishments are made in the present invention, the essence of the adopted technical solution is still the same as the present invention, Therefore, it should also be within the protection scope of the present invention.

Claims (10)

1. A logistics transport vehicle adapted to an automated production line, characterized in that it comprises a vehicle frame (1), a lifting assembly (2), a limit assembly (3), a support assembly (4) and a conveying assembly (5), so The frame (1) includes a bottom plate (6), a wheel (7) and a push rod (8), and the bottom plate (6) is welded by two long cross bars (9) and two short cross bars (10). , a positioning member (11) is provided on the right side of the two long crossbars (9), and a circular hole (12) is opened on the left side of the long crossbar (9). The two long crossbars (9) are close to each other. One side of the left short crossbar (10) is provided with a supporting rod (13), and the side between the two long crossbars (9) close to the right short crossbar (10) is provided with a supporting rod two (14); The lift assembly (2) is mounted on two long cross bars (9), and the lift assembly (2) includes two symmetrically arranged double scissor lift mechanisms (15) and a lift platform (16), the lift platform (16) ) is arranged on the upper part of the two double scissor lift mechanisms (15); The lower part of the limiting assembly (3) is installed on the left side of the support rod one (13), and the upper part is installed on the left end of the top of the lifting platform (16), and is used for the lifting assembly (2) to be positioned on the lifting assembly (2) when it rises. 2) Limit the position on the shelf; The support assembly (4) has two groups, one part of which is installed on the lifting platform (16), and the other part is installed on the bottom plate (6), for fixing the entire vehicle frame when the lifting assembly (2) rises; The conveying assembly (5) is installed above the lifting platform (16) and is used for conveying the racks. 2. A logistics transport vehicle adapted to an automated production line according to claim 1, characterized in that: the double scissor lift mechanism (15) comprises an X-shaped scissor arm (27), an X-shaped scissor arm Two (28), a fixed block (29), a slider (30) and an electric push rod (31), the upper and lower left sides of the first X-shaped scissor arm (27) are respectively connected with two fixed blocks (29), The two fixing blocks (29) are respectively fixed on the bottom of the lifting platform (16) and the top of the long cross bar (9). Two sliders (30) are connected, the right side of the X-shaped scissor arm (27) is connected with the left side of the X-shaped scissor arm two (28) through the slider (30) between them, The upper and lower sliding blocks (30) are respectively slidably connected to the lifting platform (16) and the slide rails on the long crossbar (9). The output end of the electric push rod (31) is connected to the X-shaped scissor arm. One (27) upper threaded connection. 3. A logistics transport vehicle suitable for an automated production line according to claim 2, characterized in that: the front part of the electric push rod (31) passes through the circular hole (12) on the long cross rod (9) , The two sides of the electric push rod (31) are hinged with mounting brackets for installing the electric push rod (31) on the first bracket 32, and the first bracket (32) is installed on the long cross bar (9). 4. A logistics transport vehicle suitable for an automated production line according to claim 2, characterized in that: the first X-shaped scissor arm (27) and the second X-shaped scissor arm (28) are connected by two The rods cross to form an X shape, and the two links are connected in rotation. 5. A logistics transport vehicle suitable for an automated production line according to claim 1, characterized in that: the lifting assembly (3) comprises a first connecting rod (17), a second connecting rod (18), and a third connecting rod ( 19), the positioning pin telescopic mechanism (20) and the mounting plate (21), the lower part of the connecting rod one (17) is installed on the left side of the supporting rod one (13), the connecting rod two (18) and the connecting rod The third rod (19) is symmetrically arranged in the center of the connecting rod one (17), and one end of the connecting rod two (18) and the third connecting rod (19) is rotatably connected with the output end of the connecting rod one (17), and the second connecting rod (18) ) and the other end of the third connecting rod (19) are respectively connected with the output end of the positioning pin telescopic mechanism (20), the two positioning pin telescopic mechanisms (20) are respectively installed on the two mounting plates (21), the two The mounting plate (21) is mounted on the left end of the top of the lifting platform (16). 6. A logistics transport vehicle suitable for an automated production line according to claim 5, wherein the positioning pin telescopic mechanism (20) comprises a positioning pin (33), a spring (34) and a guide sleeve (35) , the spring (34) is installed in the guide sleeve (35), the positioning pin (33) passes through the spring (34) and is slidably connected with the guide sleeve (35), the output of the two positioning pins (33) The ends are respectively provided with pins connected with the second connecting rod (18) and the third connecting rod (19). 7. A logistics transport vehicle adapted to an automated production line according to claim 1, characterized in that: the support assembly (4) comprises a fourth connecting rod (22), a fifth connecting rod (23), and a sixth connecting rod ( 24), the seventh connecting rod (25) and the support seat (26), the top of the connecting rod four (22) is installed at the bottom of the short cross bar of the lifting platform (16), and the fifth connecting rod (23) is rotatably connected to the Between the fourth connecting rod (22) and the sixth connecting rod (24), the middle part of the sixth connecting rod (24) is rotatably connected with the seventh connecting rod (25), and the output end of the sixth connecting rod (24) is connected to the support seat (26). ) rotating connection, the top of the connecting rod seven (25) is correspondingly installed on the side of the supporting rod one (13) and the supporting rod two (14). 8. A logistics transport vehicle suitable for an automated production line according to claim 1, characterized in that: the conveying assembly (5) comprises a sprocket (36), a double-row sprocket (37), a double-row chain Wheel two (38), double-row sprocket three (39), double-row sprocket four (40), motor (41), chain one (42), chain two (43), shaft (44), bracket two (45 ) and the traveling wheel (46), a number of the two brackets (45) are arranged equidistantly along the direction of the long cross bar of the lifting platform (16), and one side of the four described rotating shafts (44) is respectively connected with the double row sprocket one (37). ), double-row sprocket two (38), double-row sprocket three (39) and double-row sprocket four (40) are connected, and the output end of the rotating shaft (44) is connected with the traveling wheel (46), the traveling wheel ( 46) Set on the inner side of the bracket two (45), three of the chain one (42) are staggered to connect the double-row chain wheel one (37), the double-row chain wheel two (38), the double-row chain wheel three (39) and The fourth (40) double-row sprocket, the output end of the motor (41) is connected with the sprocket (36), and the second (43) chain connects the sprocket (36) with the first (37) double-row sprocket. 9. A logistics transport vehicle suitable for an automated production line according to claim 8, characterized in that: one end of the traveling wheel (46) is provided with a limiting portion (47), and the rest is a traveling portion (48), The outer diameter of the limiting portion (47) is greater than the outer diameter of the running portion (48), and the height of the top of the running portion (48) is greater than the height of the top of the second bracket (45). 10. A logistics transport vehicle adapted to an automated production line according to claim 1, characterized in that: the wheel (7) comprises a directional wheel (49) and a universal wheel (50), the directional wheel (49) ) is arranged below the right side of the bottom plate (6), and the universal wheel (50) is arranged below the left side of the bottom plate (6).

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