阅读说明：本技术 带护栏板起吊装置的多功能护栏抢修车 (Take guardrail board hoisting accessory's multi-functional guardrail breakdown van ) 是由 许德金 高明 于 2021-08-06 设计创作，主要内容包括：本发明公开了一种带护栏板起吊装置的多功能护栏抢修车,包括移动车体、护栏抢修装置和旋转装置,还包括护栏板起吊装置,护栏板起吊装置设置在移动车体的后部,护栏板起吊装置包括支架总成、固定臂、第一驱动装置、起吊装置固定架、收放卷装置和钢索,支架总成在使用状态下安装在移动车体上,固定臂设置在支架总成上,第一驱动装置安装在支架总成上,起吊装置固定架的中部固定设置在固定臂的端部,收放卷装置安装在起吊装置固定架上,钢索的一端固定在收放卷装置上,另一端绕过定滑轮,第一驱动装置驱动固定臂移动。本发明可直接将护栏板放置在移动车体上,由护栏板起吊装置将移动车体上的护栏板吊至其所需安装的位置,方便护栏的抢修。(The invention discloses a multifunctional guardrail breakdown van with a guardrail plate hoisting device, which comprises a moving vehicle body, the guardrail breakdown device and a rotating device, and further comprises the guardrail plate hoisting device, wherein the guardrail plate hoisting device is arranged at the rear part of the moving vehicle body, the guardrail plate hoisting device comprises a bracket assembly, a fixed arm, a first driving device, a hoisting device fixing frame, a winding and unwinding device and a steel cable, the bracket assembly is arranged on the moving vehicle body in a use state, the fixed arm is arranged on the bracket assembly, the first driving device is arranged on the bracket assembly, the middle part of the hoisting device fixing frame is fixedly arranged at the end part of the fixed arm, the winding and unwinding device is arranged on the hoisting device fixing frame, one end of the steel cable is fixed on the winding and unwinding device, the other end of the steel cable passes through a fixed pulley, and the first driving device drives the fixed arm to move. The guardrail plate can be directly placed on the movable vehicle body, and the guardrail plate on the movable vehicle body is lifted to the position required to be installed by the guardrail plate lifting device, so that the emergency repair of the guardrail is facilitated.)

1. Take guardrail board hoisting accessory's multi-functional guardrail breakdown van, including removing automobile body (1), device (2) and rotary device (3) are salvageed to the guardrail, rotary device (3) set up in the front portion of removing automobile body (1) and can rotate on removing automobile body (1), device (2) are salvageed to the guardrail set up on rotary device (3) and can be along with the rotation of rotary device (3) and synchronous revolution for pile driving, pile pulling and drilling when using, its characterized in that: the guardrail plate hoisting device is arranged at the rear part of the moving vehicle body (1), and comprises a bracket assembly (5), a fixed arm (6), a first driving device, a hoisting device fixing frame (7), a coiling and uncoiling device (8) and a steel cable (9), wherein the bracket assembly (5) is arranged on the moving vehicle body (1) in a use state, the fixed arm (6) is arranged on the bracket assembly (5) and forms a horizontal moving pair with the bracket assembly (5), the first driving device is arranged on the bracket assembly (5) and is used for driving the fixed arm (6) to horizontally move on the bracket assembly (5) along the left and right directions of the moving vehicle body (1), the middle part of the hoisting device fixing frame (7) is fixedly arranged at the end part of the fixed arm (6), and the length direction of the hoisting device fixing frame (7) is the same as the front and back directions of the moving vehicle body (1), the two ends of a lifting device fixing frame (7) are respectively provided with a fixed pulley (10), a winding and unwinding device (8) is installed on the lifting device fixing frame (7) and can move synchronously along with the horizontal movement of the lifting device fixing frame (7), one end of a steel cable (9) is fixed on the winding and unwinding device (8), the other end of the steel cable is wound around the fixed pulley (10) and used for fixing guardrail plates (11) from the two ends in a use state, a first driving device drives the fixing arm (6) to move towards the direction far away from the support assembly (5) and used for moving the guardrail plates (11) towards one side of a moving vehicle body (1), and the winding and unwinding steel cable (9) of the winding and unwinding device (8) is used for lifting or putting down the guardrail plates (11).

2. The multifunctional guardrail breakdown van with guardrail plate hoisting device of claim 1, which is characterized in that: the operation platform assembly (12) is arranged on the rotating device (3) and can synchronously rotate along with the rotation of the rotating device (3), and the operation platform assembly (12) is used for controlling the rotation of the rotating device (3) on the moving vehicle body (1) and controlling the guardrail rush-repair device (2) to carry out piling, pile pulling and drilling.

3. The multifunctional guardrail breakdown van with guardrail plate hoisting device of claim 1 or 2, which is characterized in that: the number of the fixed arms (6) and the first driving devices is two, the two fixed arms (6) are arranged in parallel, the two first driving devices respectively drive the two fixed arms (6) to move towards opposite directions on the support assembly (5), one ends, far away from each other, of the two fixed arms (6) are respectively provided with a hoisting device fixing frame (7), each hoisting device fixing frame (7) is provided with a winding and unwinding device (8), the winding and unwinding devices (8) drive two steel cables (9), and the winding and unwinding devices (8) on the two hoisting device fixing frames (7) are respectively used for hoisting the guardrail plates (11) on the left side and the right side of the support assembly (5) and moving the hoisted guardrail plates (11) towards the left side or the right side of the moving vehicle body (1).

4. The multifunctional guardrail breakdown van with guardrail plate hoisting device of claim 3, characterized in that: the bottom of the bracket assembly (5) is arranged on the movable vehicle body (1) and forms a horizontal moving pair with the movable vehicle body (1), and a second driving device (13) is arranged on the movable vehicle body (1) and used for driving the bracket assembly (5) to horizontally move on the movable vehicle body (1) along the front-back direction of the movable vehicle body (1).

5. The multifunctional guardrail breakdown van with guardrail plate hoisting device of claim 4, which is characterized in that: the rear part of the movable vehicle body (1) is provided with two bidirectional slideways (14) along the front and rear directions, the bottom of the support assembly (5) is matched with the bidirectional slideways (14), and the bottom of the support assembly (5) slides in the bidirectional slideways (14).

6. The multifunctional guardrail breakdown van with guardrail plate hoisting device according to claim 5, characterized in that: support assembly (5) include two stands (15) and a crossbeam (16), crossbeam (16) are along the left and right sides direction level setting of removal automobile body (1), the top and crossbeam (16) fixed connection of stand (15), the bottom of stand (15) sets up slider (17), slider (17) and two-way slide (14) cooperation and slide in two-way slide (14), fixed arm (6) slide and set up on crossbeam (16), a drive arrangement installs drive fixed arm (6) on crossbeam (16) and slides on crossbeam (16).

7. The multifunctional guardrail breakdown van with guardrail plate hoisting device of claim 6, characterized in that: a groove (18) is formed in the movable trolley body (1) and is located between two bidirectional slideways (14) and sunken downwards, the two sliding blocks (17) are connected through a connecting rod (19), a second driving device (13) is connected with the middle of the connecting rod (19), and the second driving device (13) drives the two sliding blocks (17) to slide along the bidirectional slideways (14) through the connecting rod (19).

8. The multifunctional guardrail breakdown van with guardrail plate hoisting device of claim 6, characterized in that: the winding and unwinding device (8) comprises two winding and unwinding motors (20) and two winding and unwinding drums (21), the winding and unwinding motors (20) are arranged at the front part and the rear part of the lifting device fixing frame (7), the winding and unwinding drums (21) are connected with an output shaft of the winding and unwinding motors (20) and driven to rotate by the winding and unwinding motors (20), one end of one steel cable (9) in front is fixedly connected with one winding and unwinding drum (21) in front, the other end of the steel cable bypasses a fixed pulley (10) at the front end of the lifting device fixing frame (7) to bend downwards, one end of one steel cable (9) in rear is fixedly connected with one winding and unwinding drum (21) in rear, the other end of the steel cable bypasses the fixed pulley (10) at the rear end of the lifting device fixing frame (7) to bend downwards, the front and rear steel cables (9) are driven by the two winding and unwinding motors (20) to synchronously wind or unwind, for lifting up or placing down the balustrade panel (11) from the front and rear to a position to be installed.

9. The multifunctional guardrail breakdown van with guardrail plate hoisting device of claim 8, characterized in that: two horizontal slideways around being provided with of crossbeam (16) are gone up the parallel, two fixed arms (6) set up respectively in two horizontal slideways and can move in the horizontal slideway, first drive arrangement is first flexible hydro-cylinder (22), the top at crossbeam (16) is installed to the cylinder body of first flexible hydro-cylinder (22), the piston rod of first flexible hydro-cylinder (22) is connected with hoisting accessory mount (7) of fixed arm (6) tip, the piston rod extension or the shrink of first flexible hydro-cylinder (22) are used for driving fixed arm (6) reciprocating sliding in the horizontal slideway.

10. The multifunctional guardrail breakdown van with guardrail plate hoisting device of claim 9, characterized in that: the connecting part of the piston rod of the first telescopic oil cylinder (22) and the hoisting device fixing frame (7) is arranged between the two winding and unwinding motors (20).

Technical Field

The invention relates to a multifunctional guardrail breakdown van with a guardrail plate hoisting device, and belongs to the technical field of municipal emergency repair tools.

Background

Along with the rapid development of traffic transportation, accidents on expressways are increasing day by day, most of the accidents may damage guardrail plates and guardrail piles on two sides of roads, multifunctional special equipment is adopted to solve the problems of piling, drilling, safety facility maintenance and the like of the anti-collision guardrail of the roads in the process of constructing the roads and after constructing the roads, namely, a guardrail breakdown van is adopted to maintain the damaged guardrail plates and guardrail piles on two sides of the roads.

The utility model discloses a chinese utility model patent that the bulletin number is CN210946810U discloses a guardrail breakdown van, its guardrail breakdown device's length is equivalent with the length of frame, when guardrail breakdown van removed, the guardrail board is placed in unnecessary space not, therefore it need be equipped with a fortune skip alone, with transport guardrail board when the guardrail breakdown, the manpower and the equipment cost of guardrail breakdown are all higher, the guardrail breakdown van of above-mentioned prior art shifts the guardrail board many times, cause the installation of guardrail board inconvenient.

Disclosure of Invention

The invention aims to provide a multifunctional guardrail breakdown van with a guardrail plate hoisting device, and solves the technical problem that in the prior art, a material conveying vehicle is required to be independently equipped for conveying guardrail plates in guardrail breakdown, and the guardrail plates are inconvenient to install.

In order to solve the problems, the technical scheme adopted by the invention is as follows: a multifunctional guardrail breakdown van with a guardrail plate hoisting device comprises a moving van body, a guardrail breakdown device and a rotating device, wherein the rotating device is arranged at the front part of the moving van body and can rotate on the moving van body, the guardrail breakdown device is arranged on the rotating device and can synchronously rotate along with the rotation of the rotating device and is used for piling, pulling piles and drilling holes when in use, the multifunctional guardrail breakdown van also comprises a guardrail plate hoisting device, the guardrail plate hoisting device is arranged at the rear part of the moving van body, the guardrail plate hoisting device comprises a bracket assembly, a fixed arm, a first driving device, a hoisting device fixed frame, a winding and unwinding device and a steel cable, the bracket assembly is arranged on the moving van body in a use state, the fixed arm is arranged on the bracket assembly and forms a horizontal moving pair with the bracket assembly, the first driving device is arranged on the bracket assembly and is used for driving the bracket assembly to horizontally move along the left and right directions of the moving van body, the middle of the lifting device fixing frame is fixedly arranged at the end part of the fixing arm, the length direction of the lifting device fixing frame is the same as the front-back direction of the moving vehicle body, two ends of the lifting device fixing frame are respectively provided with a fixed pulley, the winding and unwinding device is arranged on the lifting device fixing frame and can synchronously move along with the horizontal movement of the lifting device fixing frame, one end of the steel cable is fixed on the winding and unwinding device, the other end of the steel cable bypasses the fixed pulleys and is used for fixing the guardrail plates from two ends in a use state, the first driving device drives the fixing arm to move towards the direction away from the support assembly and is used for moving the guardrail plates towards one side of the moving vehicle body, and the winding and unwinding device winds or unwinds the steel cable and is used for lifting or putting down the guardrail plates. When the guardrail emergency repair device is used, the guardrail plate is placed on the multi-action vehicle body, and is lifted to a position to be installed through the guardrail plate lifting device, so that the guardrail plate is convenient to install, and meanwhile, a material conveying vehicle is not required to be independently arranged to convey the guardrail plate, the equipment investment and the labor investment for guardrail emergency repair are reduced, and the guardrail emergency repair cost is reduced.

As a further improvement of the invention, the guardrail emergency repair device further comprises an operation platform assembly, wherein the operation platform assembly is installed on the rotating device and can synchronously rotate along with the rotation of the rotating device, and is used for controlling the rotating device to rotate on the moving vehicle body and controlling the guardrail emergency repair device to pile, pull and drill. The operating console assembly is arranged on the rotating device, so that the working state of the guardrail rush-repair device can be observed conveniently during use, and the guardrail rush-repair accuracy is improved.

As a further improvement of the invention, the number of the fixed arms and the first driving devices is two, the two fixed arms are arranged in parallel, the two first driving devices respectively drive the two fixed arms to move towards opposite directions on the support assembly, one end, far away from each other, of each fixed arm is provided with a hoisting device fixing frame, each hoisting device fixing frame is provided with a winding and unwinding device, the winding and unwinding devices drive the two steel cables, and the winding and unwinding devices on the two hoisting device fixing frames are respectively used for hoisting the guardrail plates on the left side and the right side of the support assembly and moving the hoisted guardrail plates towards the left side or the right side of the moving vehicle body. The guardrail emergency repair device is provided with the two fixed arms which can move towards different directions, can be used for hoisting the guardrail plates on two sides of the support assembly, can hoist the guardrail plate on one emergency repair side according to actual needs, does not need to transfer a vehicle head, and further facilitates emergency repair of the guardrail.

As a further improvement of the invention, the bottom of the bracket assembly is arranged on the movable vehicle body and forms a horizontal moving pair with the movable vehicle body, and the movable vehicle body is provided with a second driving device for driving the bracket assembly to horizontally move on the movable vehicle body along the front-back direction of the movable vehicle body. The bracket assembly slides on the movable vehicle body, the position of the guardrail plate hoisting device on the movable vehicle body is adjusted, and the position of the hoisted guardrail plate in the front-back direction can be adjusted through the position of the movable guardrail plate hoisting device, so that the whole guardrail breakdown van does not need to move forwards or backwards.

As a further improvement of the invention, the rear part of the movable vehicle body is provided with two bidirectional slideways along the front and rear directions, the bottom of the bracket assembly is matched with the bidirectional slideways, and the bottom of the bracket assembly slides in the bidirectional slideways. The invention realizes the sliding connection with the movable vehicle body through the matching of the bracket assembly and the bidirectional slideway.

As a further improvement of the invention, the support assembly comprises two upright posts and a cross beam, the cross beam is horizontally arranged along the left and right directions of the movable vehicle body, the top ends of the upright posts are fixedly connected with the cross beam, the bottom ends of the upright posts are provided with slide blocks, the slide blocks are matched with the bidirectional slide ways and slide in the bidirectional slide ways, the fixed arm is arranged on the cross beam in a sliding manner, and the first driving device is arranged on the cross beam and drives the fixed arm to slide on the cross beam. The upright column is used for supporting the cross beam, the sliding block at the bottom end of the upright column is matched with the bidirectional slide way, and the horizontal movement of the whole support assembly on the moving vehicle body is realized through the relative sliding of the sliding block and the bidirectional slide way.

As a further improvement of the invention, a groove is formed by sinking downwards between two bidirectional slideways on the movable vehicle body, the two sliding blocks are connected by adopting a connecting rod, the second driving device is connected with the middle part of the connecting rod, and the second driving device drives the two sliding blocks to slide along the bidirectional slideways through the connecting rod. The groove is arranged, so that enough space is reserved for mounting the second driving device.

As a further improvement of the invention, the winding and unwinding device comprises two winding and unwinding motors and two winding and unwinding drums, the winding and unwinding motors are arranged at the front part and the rear part of the lifting device fixing frame, the winding and unwinding drums are connected with output shafts of the winding and unwinding motors and driven to rotate by the winding and unwinding motors, one end of a front steel cable is fixedly connected with the front winding drum, the other end of the front steel cable is bent downwards by a fixed pulley at the front end of the lifting device fixing frame, one end of a rear steel cable is fixedly connected with the rear winding drum, the other end of the rear steel cable is bent downwards by a fixed pulley at the rear end of the lifting device fixing frame, and the front steel cable and the rear steel cable are synchronously wound or unwound by the two winding and unwinding motors and are used for lifting or downwards placing the guardrail plate to a position to be installed from the front part and the rear part. The two winding and unwinding motors drive the two steel cables to wind or unwind synchronously, so that the front part and the rear part of the guardrail plate are lifted or put down synchronously, the stability of the guardrail plate during lifting is good, and the safety is higher.

As a further improvement of the invention, a front horizontal slideway and a rear horizontal slideway are arranged on the cross beam in parallel, two fixing arms are respectively arranged in the two horizontal slideways and can move in the horizontal slideways, the first driving device is a first telescopic oil cylinder, the cylinder body of the first telescopic oil cylinder is arranged at the top of the cross beam, the piston rod of the first telescopic oil cylinder is connected with the lifting device fixing frame at the end part of the fixing arm, and the piston rod of the first telescopic oil cylinder extends or contracts to drive the fixing arms to slide in the horizontal slideways in a reciprocating manner. According to the invention, the fixed arm can horizontally slide on the cross beam through the matching of the fixed arm and the horizontal slideway, and the telescopic action of the piston rod of the first telescopic oil cylinder drives the fixed arm to slide.

As a further improvement of the invention, the connecting part of the first telescopic oil cylinder piston rod and the lifting device fixing frame is arranged between the two winding and unwinding motors. According to the invention, the stress of the fixing frame of the lifting device is uniform, the overall stability of the guardrail plate lifting device is good, and the movement of the fixing arm is more stable.

In conclusion, the beneficial effects of the invention are as follows: the movable guardrail plate lifting device can be used for piling, pulling and drilling, and can also be used for directly placing the guardrail plate on the movable vehicle body, and the guardrail plate on the movable vehicle body is lifted to the position required to be installed by the guardrail plate lifting device, so that the emergency repair of the guardrail is facilitated.

Drawings

Fig. 1 is a rear view of the present invention.

Fig. 2 is a right side view of the present invention.

Fig. 3 is a view in the direction P of fig. 2.

Fig. 4 is a rear view of the use state of the present invention.

Wherein: moving the vehicle body; 2. a guardrail emergency repair device; 3. a rotating device; 5. a drive bracket assembly; 6. a fixed arm; 7. a hoisting device fixing frame; 8. a coiling and uncoiling device; 9. a steel cord; 10. a fixed pulley; 11. a guardrail plate; 12. an operating floor assembly; 13. a second driving device; 14. a bidirectional slideway; 15. a column; 16. a cross beam; 17. a slider; 18. a groove; 19. a connecting rod; 20. a winding and unwinding motor; 21. winding the roll; 22. a first telescopic cylinder; 23. a motor base.

Detailed Description

The following further describes embodiments of the present invention with reference to the drawings.

Example 1

As shown in fig. 1-4, the multifunctional emergency maintenance vehicle with a lifting device of a guardrail plate comprises a moving vehicle body 1, a first-aid maintenance device 2 and a rotating device 3, compared with the first-aid maintenance vehicle of a guardrail in the prior art, the moving vehicle body 1 adopted in the embodiment is longer, the rotating device 3 is arranged at the front part of the moving vehicle body 1 and can rotate on the moving vehicle body 1, the rotating device 3 in the embodiment is the prior art, the structure of the rotating device and the structure arranged on the moving vehicle body 1 are the same as the structure of the rotating device in the chinese utility model with the publication number of CN210946810U, and specific reference can be made to the above-mentioned patent, the embodiment is not detailed, the first-aid maintenance device 2 is arranged on the rotating device 3 and can rotate synchronously with the rotation of the rotating device 3, and is used for piling, pile pulling and drilling during use, the structure of the first-aid maintenance device 2 in the embodiment and the structure arranged on the rotating device 3 are also the prior art, it is the same with the guardrail rush-repair device in CN 210946810U's the chinese utility model patent of bulletin number, and the angle that is used for adjusting guardrail rush-repair device 2 is rotated through rotary device 3 to the operation of piling, pulling out dress and drilling when device realization rush-repair guardrail is salvageed through the guardrail.

Compared with the prior art, the embodiment is provided with the guardrail plate hoisting device which is arranged at the rear part of the moving vehicle body 1, the guardrail plate hoisting device comprises a support assembly 5, a fixed arm 6, a first driving device, a hoisting device fixing frame 7, a winding and unwinding device 8 and a steel cable 9, the support assembly 5 is arranged on the moving vehicle body 1 in a use state, when in use, the guardrail plate 11 to be installed can be placed at the rear part of the moving vehicle body 1, the guardrail plates 11 are positioned at two sides of the support assembly 5, the fixed arm 6 in the embodiment is arranged on the support assembly 5 and forms a horizontal moving pair with the support assembly 5, the first driving device is arranged on the support assembly 5 and is used for driving the fixed arm 6 to horizontally move on the support assembly 5 along the left and right direction of the moving vehicle body 1, the middle part of the hoisting device fixing frame 7 is fixedly arranged at the end part of the fixed arm 6, the end parts of the lifting device fixing frame 7 and the fixed arm 6 in the embodiment are welded and fixed to ensure the connecting strength of the two, the length direction of the lifting device fixing frame 7 is the same as the front and back direction of the movable vehicle body 1, the projection of the lifting device fixing frame 7 and the fixed arm 6 on the horizontal plane is in a T shape, two ends of the lifting device fixing frame 7 are respectively provided with a fixed pulley 10 in a rotating way, the winding and unwinding device 8 is arranged on the lifting device fixing frame 7, and can move synchronously with the horizontal movement of the fixing frame 7 of the lifting device, one end of a steel cable 9 is fixed on the coiling and uncoiling device 8, the other end of the steel cable is wound around a fixed pulley 10 for fixing a guardrail plate 11 from two ends in a use state, a first driving device drives a fixing arm 6 to move towards a direction far away from the bracket assembly 5, for moving the balustrade panel 11 toward one side of the moving vehicle body 1, and the take-up and pay-off device 8 takes up or pay-off the wire rope 9 for lifting or lowering the balustrade panel 11. In order to fix the guardrail plate by the cable 9 in use, the embodiment preferably has a clip or a hook or the like at an end of the cable 9 far from the winding and unwinding device 8.

The guardrail plate 11 is fixed to the end portion of the steel cable 9, the steel cable 9 is wound through the winding and unwinding device 8, the guardrail plate 11 is lifted upwards, the fixing arm 6 is driven by the first driving device to move towards the direction far away from the support assembly 5, the guardrail plate 11 is moved towards one side of the moving vehicle body to the position above the position of the guardrail plate 11 to be installed, the winding and unwinding device 8 is used for unwinding, and the guardrail plate 11 is placed at the position where the guardrail plate needs to be installed. This embodiment can directly place guardrail board 11 on the guardrail breakdown van, and need not be equipped with the stack pallet alone again, makes things convenient for the salvageing of guardrail.

Example 2

The present embodiment is a further improvement of embodiment 1, compared with embodiment 1, the present embodiment is provided with an operation table assembly 12, the operation table assembly 12 is installed on the rotating device 3 and can rotate synchronously with the rotation of the rotating device 3, the operation table assembly 12 is used for controlling the rotation of the rotating device 3 on the moving vehicle body 1 and controlling the emergency maintenance device 2 to pile, pull and drill, the operation table assembly 12 in the present embodiment is a prior art, and only the control ground part on the emergency maintenance vehicle in the prior art is installed on the rotating device 3, so as to facilitate observing the situations of pile driving, pile pulling and drilling when in use. The structure of the rest of the present embodiment is the same as that of embodiment 1, and reference may be made to embodiment 1 for details, which are not repeated herein.

Example 3

The embodiment is a further improvement on the basis of the embodiment 1, and compared with the embodiment 1, in the embodiment, the number of the fixed arms 6 and the number of the first driving devices are two, the two fixed arms 6 are arranged in parallel, the two first driving devices respectively drive the two fixed arms 6 to move towards opposite directions on the support assembly 5, one ends, far away from each other, of the two fixed arms 6 are respectively provided with a hoisting device fixing frame 7, each hoisting device fixing frame 7 is provided with a reeling and unreeling device 8, the reeling and unreeling devices 8 drive the two steel cables 9, and the reeling and unreeling devices 8 on the two hoisting device fixing frames 7 are respectively used for hoisting the guardrail plates 11 on the left side and the right side of the support assembly 5 and moving the hoisted guardrail plates 11 towards the left side or the right side of the moving vehicle body 1.

In the present embodiment, the bottom of the rack assembly 5 is mounted on the moving vehicle body 1 and forms a horizontal moving pair with the moving vehicle body 1, and the moving vehicle body 1 is provided with a second driving device 13 for driving the rack assembly 5 to move horizontally on the moving vehicle body 1 along the front-rear direction of the moving vehicle body 1. The concrete structure of this embodiment for realizing the sliding installation of the bracket assembly 5 and the moving vehicle body 1 is: two bidirectional slideways 14 are arranged at the rear part of the movable vehicle body 1 along the front and rear directions, the bottom of the bracket assembly 5 is matched with the bidirectional slideways 14, and the bottom of the bracket assembly 5 slides in the bidirectional slideways 14.

In this embodiment, the support assembly 5 includes two upright columns 15 and a cross beam 16 that are the same in size and shape, the cross beam 16 is horizontally arranged along the left and right directions of the moving vehicle body 1, the top end of the upright column 15 is fixedly connected with the cross beam 16, in this embodiment, the upright column 15 and the cross beam 16 are fixed in a welded manner, the bottom end of the upright column 15 is fixedly welded with a sliding block 17, the sliding block 17 is matched with the bidirectional slideway 14 and slides in the bidirectional slideway 14, in this embodiment, the length of the sliding block 17 along the front and rear directions of the moving vehicle body 1 is greater than the width of the upright column 15 along the front and rear directions of the moving vehicle body 1 so as to be higher than the stability of the supporting upright column 15, the fixing arm 6 is slidably arranged on the cross beam 16, and the first driving device is installed on the cross beam 16 to drive the fixing arm 6 to slide on the cross beam 16.

In order to facilitate the installation of the second driving device 13, in this embodiment, a groove 18 is formed by recessing downwards between the two bidirectional sliding ways 14 on the moving vehicle body 1, the two sliding blocks 17 are connected by using a connecting rod 19, two ends of the connecting rod 19 are respectively welded and fixed with the two sliding blocks 17, the second driving device 13 is connected with the middle part of the connecting rod 19, and the second driving device 13 drives the two sliding blocks 17 to slide along the bidirectional sliding ways 14 through the connecting rod 19. The second driving device 13 in this embodiment preferably employs a second telescopic cylinder, a cylinder body of the second telescopic cylinder is hinged in the groove 18, a piston rod of the second telescopic cylinder is arranged along the front-rear direction of the moving vehicle body 1, an end portion of the piston rod of the second telescopic cylinder is hinged with a middle portion of the connecting rod 19, the piston rod of the second telescopic cylinder extends or contracts to drive the connecting rod 19 to reciprocate along the front-rear direction of the moving vehicle body 1, and the two sliding blocks 17 move synchronously in the bidirectional slideway 14 along with the piston rod to drive the support assembly 1 to move.

The winding and unwinding device 8 in this embodiment includes two winding and unwinding motors 20 and two winding and unwinding drums 21, the winding and unwinding motors 20 are installed at the front and rear portions of the hoisting device fixing frame 7, in this embodiment, a motor base 23 is respectively installed at the front and rear portions of the hoisting device fixing frame 7, the winding and unwinding motors 10 are installed on the motor base 23, the winding and unwinding drums 21 are connected with the output shaft of the winding and unwinding motors 20 and are driven to rotate by the winding and unwinding motors 20, one end of a front steel cable 9 is fixedly connected with the front winding and unwinding drum 21, the other end of the front steel cable is bent downwards around a fixed pulley 10 at the front end of the hoisting device fixing frame 7, one end of a rear steel cable 9 is fixedly connected with the rear winding and unwinding drum 21, the other end of the rear steel cable is bent downwards around the fixed pulley 10 at the rear end of the hoisting device fixing frame 7, the front and rear steel cables 9 are driven to synchronously wind or unwind by the two winding and unwinding motors 20, for lifting or lowering the balustrade panel 11 from the front and rear to a position to be installed. In the embodiment, preferably, a through groove penetrating through the front end and the rear end of the fixing frame 7 of the lifting device is formed at each of the front end and the rear end, and the fixed pulley 10 is rotatably installed in the through groove by adopting a rotating shaft.

The specific structure of the embodiment for realizing the sliding connection between the fixing arm 6 and the cross beam 16 is as follows: two horizontal slideways in front and back are parallelly arranged on the cross beam 16, the longitudinal section of each horizontal slideway is the same as that of the fixing arm 6, the two fixing arms 6 are respectively arranged in the two horizontal slideways and can move in the horizontal slideways, the first driving device in the embodiment is a first telescopic oil cylinder 22, the cylinder body of the first telescopic oil cylinder 22 is arranged at the top of the cross beam 16, the piston rod of the first telescopic oil cylinder 22 is connected with the lifting device fixing frame 7 at the end part of the fixing arm 6, and the piston rod of the first telescopic oil cylinder 22 extends or contracts to drive the fixing arms 6 to slide in the horizontal slideways in a reciprocating mode. The connection part of the piston rod of the first telescopic cylinder 22 and the lifting device fixing frame 7 in the embodiment is between the two winding and unwinding motors 20.

In the embodiment, when in use, the two fixing arms 6 respectively move towards the left side and the right side of the moving vehicle body 1, so that the guardrail plates 11 on the two sides of the bracket assembly 5 can be respectively hung to the two sides of the moving vehicle body 1 according to actual use, and the turning around is not needed when in use.

Parts which are not specifically described in the above description are prior art or can be realized by the prior art. The specific embodiments of the present invention are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention. That is, all equivalent changes and modifications made according to the contents of the claims of the present invention should be regarded as the technical scope of the present invention.