CN215155148U

CN215155148U - Chassis structure of AGV dolly and AGV dolly

Info

Publication number: CN215155148U
Application number: CN202120940194.9U
Authority: CN
Inventors: 傅峰峰
Original assignee: Guangzhou Fugang Life Intelligent Technology Co Ltd
Current assignee: Guangzhou Fugang Life Intelligent Technology Co Ltd
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2021-12-14
Anticipated expiration: 2031-04-30

Abstract

The utility model discloses a chassis structure of an AGV trolley, which comprises a chassis, a traveling mechanism and a first tensioning mechanism, wherein the traveling mechanism and the first tensioning mechanism are arranged on two sides of the chassis; the first tensioning mechanism comprises a first tensioning wheel and a second driving mechanism, and the second driving mechanism drives the first tensioning wheel to abut against the first synchronous belt. The utility model discloses a chassis structure under second actuating mechanism's effect, can drive first take-up pulley butt all the time on first synchronous belt to can be at the elasticity in the in-process of marcing of AGV dolly constantly adjustment first synchronous belt, and then play the effect of buffering to avoid possible earthquakes. Additionally, the utility model discloses still provide the AGV dolly that has this chassis structure.

Description

Chassis structure of AGV dolly and AGV dolly

Technical Field

The utility model relates to a haulage equipment field, concretely relates to chassis structure and AGV dolly of AGV dolly.

Background

AGVs (automated Guided vehicles), also known as automated Guided vehicles, provide for automated guidance of the AGVs along predetermined routes without manual navigation and transport of goods or materials from a starting point to a destination.

Most chassis structures of the existing AGV trolley adopt a synchronous belt to be matched with synchronous wheels on two sides for transmission, and then the AGV trolley is driven to move. Because most AGV dolly does not have to set up buffering damping device, when meetting the condition of road surface unevenness, the phenomenon that the AGV dolly jolt, skidded or even topples can take place at the in-process of marcing.

Accordingly, there is a need for a new AGV cart that overcomes, or at least alleviates, some or all of the above-mentioned disadvantages.

SUMMERY OF THE UTILITY MODEL

In order to overcome the prior art the defect, the utility model provides a chassis structure and AGV dolly of AGV dolly.

The utility model discloses a solve the technical scheme that its problem adopted and be:

the utility model provides a chassis structure of AGV dolly, includes the chassis and sets up running gear and the first tension mechanism of chassis both sides, wherein:

the walking mechanism comprises a driving wheel, a driven wheel and a first driving mechanism, wherein the driving wheel and the driven wheel are arranged on the chassis, the first driving mechanism drives the driving wheel and the driven wheel to rotate simultaneously, and the first driving mechanism comprises a first synchronous belt;

the first tensioning mechanism comprises a first tensioning wheel and a second driving mechanism, and the second driving mechanism drives the first tensioning wheel to abut against the first synchronous belt.

The utility model discloses a chassis structure under second actuating mechanism's effect, can drive first take-up pulley butt all the time on first synchronous belt to can be at the elasticity in the in-process of marcing of AGV dolly constantly adjustment first synchronous belt, and then play the effect of buffering to avoid possible earthquakes.

Furthermore, the second driving mechanism comprises a lifting seat and an elastic piece, wherein the lifting seat is connected with the first tensioning wheel, one end of the elastic piece is abutted against the lifting seat, and the other end of the elastic piece is abutted against the chassis;

under the elastic force of the elastic piece, a first tensioning wheel connected with the lifting seat can be driven to abut against a first synchronous belt.

Therefore, when the first tensioning wheel is pushed by the first synchronous belt, the first tensioning wheel can drive the lifting seat to move, the elastic piece can be extruded by the lifting seat to generate elastic deformation and apply flicking force to the lifting seat until the forces applied to the lifting seat and the first tensioning wheel are balanced, namely the first tensioning wheel plays a role in tensioning the first synchronous belt; after first synchronous belt tensioning degree became pine, this first tensioning wheel received the thrust that first synchronous belt was applyed to diminish, and the elastic deformation of elastic component can resume some and will go up and down the seat bullet and open, and first synchronous belt receives the thrust effect, and then has tensioned first synchronous belt in real time.

Furthermore, the first driving mechanism further comprises a first driving pulley connected with the driving wheel, a first driven pulley connected with the driven wheel and a first driving device, and the first synchronous belt is respectively wound on the first driving pulley and the first driven pulley;

when the first driving device drives the first driving belt wheel to rotate, the first driving device can drive the driving wheel to rotate, and the first driven belt wheel and the driven wheel are driven to rotate through the first synchronous belt.

Furthermore, the walking mechanism also comprises at least one guide wheel pivoted on the chassis, and the first synchronous belt is wound around the guide wheel.

Further, running gear still includes two swing boards of symmetry setting, wherein:

the driving wheel and the driven wheel are respectively pivoted on the two swinging plates;

the chassis is provided with two symmetrically arranged guide grooves, and the swinging plate is provided with a guide shaft capable of moving along the guide grooves;

when the guide shafts of the two swing plates move along the two guide grooves respectively, the distance between the wheels and the driven wheels can be adjusted.

Therefore, the guide groove is arranged on the chassis and can guide the driving wheels and the driven wheels which are respectively positioned at two sides to adjust the distance between the driving wheels and the driven wheels in time when the driving wheels and the driven wheels encounter resistance so as to better drive on a bumpy road surface.

Furthermore, the swing plate device further comprises a driven shaft, wherein one end of the driven shaft is pivoted on the chassis, and the other end of the driven shaft is pivoted on the swing plate.

Therefore, by arranging the driven shaft, when the guide shaft on the swing plate moves along the guide groove, the driven shaft can be driven to rotate at the same time, so that the stability of the swing plate during swinging is improved.

Additionally, the utility model discloses the second aspect still provides a AGV dolly, be in including above-mentioned chassis structure, setting structural automobile body in chassis and setting are in manipulator on the automobile body, the automobile body includes the frame, be equipped with a plurality of bolster between frame and the chassis.

Therefore, the buffering and damping effects are achieved by arranging the buffering parts between the frame and the chassis, and the phenomenon that the AGV trolley jolts, slips or overturns in the advancing process is reduced.

Furthermore, the vehicle body further comprises a drawer arranged in the vehicle frame and a third driving mechanism for driving the drawer to extend out of or into the vehicle frame, the third driving mechanism comprises a rack arranged below the drawer and a second driving device, and the movable end of the second driving device is in transmission connection with the rack.

Further, the automobile body still includes the lifting support that sets up in the frame and drive the lifting support moves along the fourth actuating mechanism of frame direction of height, wherein:

the manipulator is arranged at the top of the lifting bracket;

the fourth driving mechanism comprises a second driving belt wheel pivoted on the frame, a second driven belt wheel pivoted on the frame, a second synchronous belt respectively wound on the second driving belt wheel and the second driven belt wheel, and a third driving device for driving the second driving belt wheel to rotate;

the lifting support is provided with a connecting block, and the connecting block is connected with a second synchronous belt.

The vehicle frame further comprises a second tensioning mechanism, the second tensioning mechanism comprises a second tensioning wheel and a swing rod mechanism pivoted on the vehicle frame, and the swing rod mechanism drives the second tensioning wheel to abut against a second synchronous belt.

Therefore, under the action of the swing rod mechanism, the second tensioning wheel can be driven to be always abutted against the second synchronous belt, so that the tightness of the second synchronous belt can be continuously adjusted in the lifting process of the lifting support, and the effect of buffering and shock absorption is further achieved.

To sum up, the utility model discloses a chassis structure and AGV dolly of AGV dolly has following beneficial effect:

(1) the utility model discloses a chassis structure under second actuating mechanism's effect, can drive first take-up pulley butt all the time on first synchronous belt to can be at the elasticity in the in-process of marcing of AGV dolly constantly adjustment first synchronous belt, and then play the effect of buffering to avoid possible earthquakes.

(2) The utility model discloses a chassis structure, through set up the guiding groove on the chassis, this guiding groove can guide initiative wheel and the driven wheel that is located both sides respectively and in time adjust its interval between the two when meeting and hinder to go better on the road surface of jolting injustice.

(3) The utility model discloses a AGV dolly is through setting up a plurality of bolster between frame and chassis to play the absorbing effect of buffering, thereby reduce the phenomenon that the AGV dolly jolts, skids or topples at the in-process of marcing.

(4) The utility model discloses a AGV dolly, under the effect of pendulum rod mechanism, can drive the second take-up pulley butt all the time on the second hold-in range to can be at the in-process of lifting support lift constantly adjustment second hold-in range's elasticity, and then play the effect of buffering to avoid possible earthquakes.

Drawings

FIG. 1 is a schematic structural diagram of a chassis structure of an AGV of the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1 from another perspective;

FIG. 3 is a schematic view of a part of the structure of the chassis of the present invention;

FIG. 4 is a schematic structural view of the vehicle shown in FIG. 3 with the driving wheels and the driven wheels hidden;

FIG. 5 is a schematic structural diagram of an AGV of the present invention;

FIG. 6 is a schematic structural view of the AGV according to the present invention after the drawer is hidden in the body;

fig. 7 is a schematic structural view of fig. 6 from another angle.

Wherein the reference numerals have the following meanings:

1. a chassis structure; 11. a chassis; 111. a guide groove; 12. a driving wheel; 13. a driven wheel; 14. a first drive mechanism; 141. a first synchronization belt; 142. a first driving pulley; 143. a first driven pulley; 144. a first driving device; 15. a first tensioning wheel; 16. a second drive mechanism; 161. a lifting seat; 162. an elastic member; 17. a guide wheel; 18. a swing plate; 181. a guide shaft; 19. a driven shaft; 2. a vehicle body; 21. a frame; 22. a drawer; 23. a third drive mechanism; 231. a rack; 232. a second driving device; 24. a lifting support; 241. connecting blocks; 25. a fourth drive mechanism; 251. a second driving pulley; 252. a second driven pulley; 253. a second synchronous belt; 254. a third driving device; 255. a transfer wheel; 26. a second tensioning mechanism; 261. a second tensioning wheel; 262. a swing rod mechanism; 2621. a first swing link; 2622. a second swing link; 27. a first guide rail; 28. a second guide rail; 3. a robot arm.

Detailed Description

For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Example one

Referring to fig. 1-4, the utility model provides a chassis structure of AGV dolly, including chassis 11 and running gear and the first straining device of setting in the 11 left and right sides on this chassis, this chassis 11 includes left and right sides board and connects two support crossbeams that left and right sides board and interval set up respectively. The running mechanism comprises a driving wheel 12, a driven wheel 13 and a first driving mechanism 14, wherein the driving wheel 12 and the driven wheel 13 are arranged on the left side plate and the right side plate of the chassis 11, and the first driving mechanism 14 drives the driving wheel 12 and the driven wheel 13 to rotate simultaneously. Under the action of the first driving mechanism 14, the driving wheels 12 and the driven wheels 13 can be driven to rotate simultaneously, so as to drive the AGV to move integrally.

Specifically, the first driving mechanism 14 includes a first driving pulley 142 connected to the driving wheels 12, a first driven pulley 143 connected to the driven wheels 13, and a first driving device 144, and the first synchronous belt 141 is wound around the first driving pulley 142 and the first driven pulley 143, respectively; when the first driving device 144 drives the first driving pulley 142 to rotate, the driving wheel 12 can be driven to rotate, and the first synchronous belt 141 drives the first driven pulley 143 and the driven wheel 13 to rotate, so as to move the AGV.

In this embodiment, the first driving device 144 is a motor.

In addition, the running mechanism further comprises at least one guide wheel 17 pivoted on the chassis 11, and the first synchronous belt 141 is wound around the guide wheel 17.

Referring to fig. 1-4, the traveling mechanism further includes two swing plates 18 pivoted to the side plates of the chassis 11 and symmetrically disposed, the swing plates 18 are comma-shaped, one end of each swing plate 18 is pivoted to the driving wheel 12 or the driven wheel 13, and the other end of each swing plate is pivoted to the side plates; the chassis 11 is further provided with guide grooves 111 symmetrically provided on side plates, the guide grooves 111 are formed in an arc shape, and the swing plate 18 is provided with a guide shaft 181 movable along the guide grooves 111.

Therefore, by arranging the guide grooves 111 on the side plates of the chassis 11, the guide grooves 111 can guide the driving wheels 12 and the driven wheels 13 respectively positioned at two sides to adjust the distance between the driving wheels and the driven wheels in time when encountering resistance, so as to better drive on the road with bumpy road surface.

In addition, the traveling mechanism further comprises a driven shaft 19, one end of the driven shaft 19 is pivoted on the chassis 11, and the other end is pivoted on the swinging plate 18.

Thus, by providing the driven shaft 19, when the guide shaft 181 of the swing plate 18 moves along the guide groove 111, the driven shaft 19 is simultaneously driven to rotate, and the stability of the swing plate 18 during swinging is improved.

Referring to fig. 1-4, the vehicle chassis further includes a first tensioning mechanism disposed on two sides of the chassis 11, the first tensioning mechanism includes a first tensioning wheel 15 and a second driving mechanism 16, the second driving mechanism 16 includes a lifting base 161 connected to the first tensioning wheel 15 and an elastic member 162, one end of the elastic member 162 abuts against the lifting base 161, and the other end abuts against the chassis 11; under the elastic force of the elastic member 162, the first tension wheel 15 connected to the lifting base 161 is driven to abut against the first synchronous belt 141.

Therefore, when the first tension wheel 15 is pushed by the first synchronous belt 141, the first tension wheel 15 drives the lifting base 161 to move, and the elastic member 162 is pressed by the lifting base 161 to be elastically deformed and applies a springing force to the lifting base 161 until the forces applied to the lifting base 161 and the first tension wheel 15 are balanced, that is, the first tension wheel 15 plays a role in tensioning the first synchronous belt 141; after the first synchronous belt 141 is loosened, the pushing force applied by the first synchronous belt 141 on the first tension pulley 15 is reduced, the elastic deformation of the elastic member 162 is restored and the lifting base 161 is sprung open, and the first synchronous belt 141 is pushed to tension the first synchronous belt 141 in real time.

Therefore, under the action of the second driving mechanism 16, the first tension wheel 15 can be driven to be always abutted against the first synchronous belt 141, so that the tightness of the first synchronous belt 141 can be continuously adjusted in the advancing process of the AGV trolley, and the effects of buffering and shock absorption are further achieved.

In this embodiment, the elastic member 162 is a spring.

Example two

Referring to fig. 5-7, the second aspect of the present invention further provides an AGV cart, which includes the chassis structure 1, the car body 2 disposed on the chassis structure 1, and the manipulator 3 disposed on the car body 2. The vehicle body 2 includes a frame 21, the frame 21 is a rectangular frame, and includes a top plate, a bottom plate, a left side plate and a right side plate respectively connecting the top plate and the bottom plate, and a plurality of support rods connecting the left side plate and the right side plate, and a plurality of buffer members (not shown in the figure) are disposed between the bottom plate of the frame 21 and the chassis 11.

Therefore, the buffering and damping effects are achieved by arranging the buffering parts between the frame 21 and the chassis 11, and the phenomenon that the AGV trolley jolts, slips or overturns in the advancing process is reduced.

In this embodiment, the buffer member may be a hydraulic buffer cylinder, a pneumatic buffer cylinder, a buffer spring, or the like, which is not limited herein.

Referring to fig. 5-7, the vehicle body 2 further includes a plurality of drawers 22 disposed in the frame 21, and a third driving mechanism 23 for driving the plurality of drawers 22 to extend out of or into the frame 21, the third driving mechanism 23 includes a rack 231 disposed below the drawers 22, and a second driving device 232, a movable end of the second driving device 232 is in transmission connection with the rack 231.

In this embodiment, the second driving device 232 is a motor, and an output end of the motor is connected to a gear, and the gear is in meshing transmission with the rack 231.

In addition, the vehicle body 2 further comprises a first guiding mechanism, which comprises a first guide rail 27 disposed above the bottom plate of the frame 21 and spaced apart from the bottom plate, and a first slider (not shown) disposed below the drawer 22, and the first slider is slidably engaged with the first guide rail 27.

Thus, when the second driving device 232 drives the drawer 22 to extend into or out of the frame 21, the drawer 22 can slide along the first guide rail 27, thereby improving the stability of the sliding of the drawer 22.

Referring to fig. 5-7, the vehicle body 2 further includes a lifting bracket 24 disposed in the frame 21 and a fourth driving mechanism 25 for driving the lifting bracket 24 to move along the height direction of the frame 21, and the manipulator 3 is mounted on the top of the lifting bracket 24; the fourth driving mechanism 25 includes a second driving pulley 251 pivotally connected to the frame 21, a second driven pulley 252 pivotally connected to the frame 21, a second timing belt 253 respectively wound around the second driving pulley 251 and the second driven pulley 252, and a third driving device 254 for driving the second driving pulley 251 to rotate; the lifting bracket 24 is provided with a connecting block 241, and the connecting block 241 is connected with a second synchronous belt 253.

Therefore, under the action of the third driving device 254, the second driving pulley 251 can be driven to rotate, and further the second synchronous belt 253 and the second driven pulley 252 are driven to rotate, and further the lifting support 24 is driven to move along the height direction of the frame 21, so that the movement of the manipulator 3 is realized.

In this embodiment, a transmission wheel 255 coaxially rotating with the second driving pulley 251 is further included, the third driving device 254 is a motor, an output end of the motor is connected with a gear, and the gear is in meshing transmission connection with the transmission wheel 255.

Referring to fig. 5-7, the vehicle body 2 further includes a second tensioning mechanism 26, the second tensioning mechanism 26 includes a second tensioning wheel 261 and a swing link mechanism 262 pivotally connected to the vehicle frame 21, the swing link mechanism 262 includes a first swing link 2621 and a second swing link 2622 hinged to each other, a distal end of the first swing link 2621 is hinged to the vehicle frame 21, a top end of the second swing link 2622 is connected to the second tensioning wheel 261, and the second tensioning wheel 261 can be driven to abut against the second timing belt 253 under the action of the first swing link 2621 and the second swing link 2622.

Therefore, under the action of the swing rod mechanism 262, the second tensioning wheel 261 can be driven to be always abutted against the second synchronous belt 253, so that the tightness of the second synchronous belt 253 can be continuously adjusted in the lifting process of the lifting support 24, and the buffering and shock-absorbing effects are further achieved.

In addition, the vehicle body 2 further includes a second guide mechanism, which includes a second guide rail 28 disposed on a side plate of the vehicle frame 21 and disposed at an interval, and a second slider disposed on the lifting bracket 24, and the second slider is slidably engaged with the second guide rail 28.

Thus, the provision of the second guide mechanism improves the stability of the sliding movement of the lifting bracket 24.

To sum up, the utility model discloses a chassis structure 1 and AGV dolly of AGV dolly has following beneficial effect:

(one) the utility model discloses a chassis structure 1, under second actuating mechanism 16's effect, can drive first take-up pulley 15 butt all the time on first synchronous belt 141 to can be at the elasticity of the in-process of marcing of AGV dolly constantly adjustment first synchronous belt 141, and then play the effect of buffering and moving away to avoid possible earthquakes.

(II) the utility model discloses a chassis structure 1, through set up guiding groove 111 on chassis 11, this guiding groove 111 can guide initiative wheel 12 and the driven wheel 13 that are located both sides respectively and in time adjust its interval between the two when meeting and hinder to go better on the uneven road surface of jolting.

(III) the utility model discloses a AGV dolly is through setting up a plurality of bolster between frame 21 and chassis 11 to play the absorbing effect of buffering, thereby reduce the AGV dolly and take place to jolt, skid or the phenomenon that topples at the in-process of marcing.

(IV) the utility model discloses a AGV dolly, under the effect of pendulum rod mechanism 262, can drive second take-up pulley 261 butt all the time on second hold-in range 253 to can be at the in-process continuous adjustment second hold-in range 253's of lifting support 24 lift elasticity, and then play the effect of buffering moving away to avoid possible earthquakes.

The technical means disclosed by the scheme of the present invention is not limited to the technical means disclosed by the above embodiments, but also includes the technical scheme formed by the arbitrary combination of the above technical features. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications are also considered as the protection scope of the present invention.

Claims

1. The utility model provides an AGV dolly chassis structure, its characterized in that includes chassis (11) and sets up running gear and the first straining device in chassis (11) both sides, wherein:

the walking mechanism comprises a driving wheel (12) and a driven wheel (13) which are arranged on a chassis (11), and a first driving mechanism (14) which drives the driving wheel (12) and the driven wheel (13) to rotate simultaneously, wherein the first driving mechanism (14) comprises a first synchronous belt (141);

the first tensioning mechanism comprises a first tensioning wheel (15) and a second driving mechanism (16), and the second driving mechanism (16) drives the first tensioning wheel (15) to abut against the first synchronous belt (141).

2. The chassis structure according to claim 1, characterized in that the second driving mechanism (16) comprises a lifting seat (161) connected with the first tensioning wheel (15) and an elastic member (162), one end of the elastic member (162) abuts on the lifting seat (161) and the other end abuts on the chassis (11);

under the action of the elastic force of the elastic piece (162), a first tension wheel (15) connected with the lifting seat (161) can be driven to abut against the first synchronous belt (141).

3. The chassis structure according to claim 1, wherein the first driving mechanism (14) further comprises a first driving pulley (142) connected to the driving wheel (12), a first driven pulley (143) connected to the driven wheel (13), and a first driving device (144), the first synchronous belt (141) being wound around the first driving pulley (142) and the first driven pulley (143), respectively;

when the first driving device (144) drives the first driving pulley (142) to rotate, the driving wheel (12) can be driven to rotate, and the first driven pulley (143) and the driven wheel (13) are driven to rotate through the first synchronous belt (141).

4. The chassis structure according to claim 3, characterized in that said walking mechanism further comprises at least one guide wheel (17) pivoted on the chassis (11), said first synchronization belt (141) being wound around said guide wheel (17).

5. The chassis structure according to claim 1, wherein the running gear further comprises two symmetrically arranged swing plates (18), wherein:

the driving wheel (12) and the driven wheel (13) are respectively pivoted on the two swinging plates (18);

two guide grooves (111) are symmetrically arranged on the chassis (11), and a guide shaft (181) capable of moving along the guide grooves (111) is arranged on the swinging plate (18);

when the guide shafts (181) of the two swing plates (18) move along the two guide grooves (111), the distance between the driving wheel (12) and the driven wheel (13) can be adjusted.

6. Chassis structure according to claim 5, characterized in that it further comprises a driven shaft (19), said driven shaft (19) being pivoted at one end to the chassis (11) and at the other end to the oscillating plate (18).

7. AGV trolley, characterized in that it comprises a chassis structure (1) according to any of claims 1-6, a car body (2) arranged on the chassis structure (1) and a manipulator (3) arranged on the car body (2), the car body (2) comprising a frame (21), a number of buffers being arranged between the frame (21) and the chassis (11).

8. AGV according to claim 7, characterized in that the body (2) further comprises a drawer (22) arranged inside the frame (21) and a third drive mechanism (23) driving the drawer (22) to extend out of or into the frame (21), the third drive mechanism (23) comprising a rack (231) arranged below the drawer (22) and a second drive means (232), the movable end of the second drive means (232) being in driving connection with the rack (231).

9. AGV according to claim 7, characterised in that the car body (2) further comprises a lifting bracket (24) arranged in the frame (21) and a fourth drive mechanism (25) for driving the lifting bracket (24) in the height direction of the frame (21), wherein:

the manipulator (3) is arranged at the top of the lifting bracket (24);

the fourth driving mechanism (25) comprises a second driving pulley (251) pivoted on the frame (21), a second driven pulley (252) pivoted on the frame (21), a second synchronous belt (253) respectively wound on the second driving pulley (251) and the second driven pulley (252) and a third driving device (254) for driving the second driving pulley (251) to rotate;

be equipped with connecting block (241) on lifting support (24), connecting block (241) are connected with second hold-in range (253).

10. The AGV trolley according to claim 9, further comprising a second tensioning mechanism (26), said second tensioning mechanism (26) including a second tensioning wheel (261) and a rocker mechanism (262) pivotally connected to said frame (21), said rocker mechanism (262) driving said second tensioning wheel (261) against a second timing belt (253).