CN113979384A

CN113979384A - U-shaped section bar installation method based on lifting vehicle

Info

Publication number: CN113979384A
Application number: CN202111265760.1A
Authority: CN
Inventors: 王晓凯; 王希鹏; 贾建伟; 刘文武; 贾建文; 黄帅; 金雪琪; 郝亚明; 高江涛; 温博宇; 贺宇航; 李建国; 庞瑾彬; 胡凌云; 雷瑞杰
Original assignee: Taiyuan Institute of China Coal Technology and Engineering Group; Shanxi Tiandi Coal Mining Machinery Co Ltd
Current assignee: Taiyuan Institute of China Coal Technology and Engineering Group; Shanxi Tiandi Coal Mining Machinery Co Ltd
Priority date: 2021-10-28
Filing date: 2021-10-28
Publication date: 2022-01-28
Anticipated expiration: 2041-10-28
Also published as: CN113979384B

Abstract

The invention discloses a U-shaped section bar installation method based on a lifting vehicle, which comprises the following steps: moving the vehicle body to a set site and fixing the vehicle body on the set site; controlling the first telescopic arm and the second telescopic arm to swing and extend towards the ground and contact with the ground, and placing the U-shaped section in the bracket; adjusting the width of brackets on the first bracket and the second bracket; controlling the first telescopic arm and the second telescopic arm to contract to the shortest length, lifting the second platform to a set height through the lifting assembly, and rotating the operating platform to enable the operating platform to extend along the width direction of the vehicle body; controlling the first telescopic arm and the second telescopic arm to swing upwards; after the U-shaped section bar is contacted with the roadway roof, the middle part of the U-shaped section bar is fixed with the roadway roof by personnel on the operation platform, and the two side arm parts of the U-shaped section bar are respectively fixed with the corresponding roadway side walls. The U-shaped section bar mounting method facilitates the lifting and fixing of the U-shaped section bar, and further facilitates the underground shed erecting operation.

Description

U-shaped section bar installation method based on lifting vehicle

Technical Field

The invention relates to the technical field of shed erecting operation, in particular to a U-shaped section bar installation method based on a lifting vehicle.

Background

In recent years, with the increase in coal mining depth, the conditions of the roof of the roadway are becoming more complicated, and in order to prevent roof collapse, it is necessary to perform a roof erecting operation at a position where roof slab members are not good and roof cracks develop. In the related art, the shed erecting operation mostly adopts a manual operation mode.

During the canopy erecting operation, the canopy erecting material needs to be moved to the tunneling and anchoring machine body manually, due to the factors that underground roadway space is narrow, the canopy erecting material is heavy, high-altitude operation does not have proper station points, labor is more, labor intensity is higher and the like, when the tunneling and anchoring machine is matched with a canopy erecting machine, on one hand, the number of operation people is more, on the other hand, equipment operation and matching are improper, personnel injury is easily caused, potential safety hazards such as falling objects and hurting people exist, on the other hand, the canopy erecting operation time is longer every time, normal tunneling is influenced, normal maintenance cannot be normally carried out on the tunneling and anchoring machine, production can be severely restricted when the potential safety hazards of equipment and canopy erecting operation occur simultaneously, and the safe and efficient operation of the canopy erecting operation is not facilitated.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.

Therefore, the U-shaped section installation method based on the lifting vehicle is convenient for lifting and fixing the U-shaped section, and further facilitates underground shed erecting operation.

The U-shaped section installation method based on the lifting vehicle comprises a vehicle body, a lifting platform, a lifting assembly and an operation platform, wherein the vehicle body is provided with a first platform; the lifting platform is arranged on the first platform and comprises a lifting assembly and a second platform, and the lifting assembly is arranged between the first platform and the second platform; the lifting assembly comprises a first telescopic arm and a second telescopic arm, a first bracket is arranged at one end of the first telescopic arm, the other end of the first telescopic arm is connected with the second platform and can swing up and down, a second bracket is arranged at one end of the second telescopic arm, the other end of the second telescopic arm is connected with the second platform and can swing up and down, brackets with upward notches are arranged on the first bracket and the second bracket, and the width size of each bracket is adjustable; the operating platform is arranged on the second platform and can swing in the horizontal direction;

the U-shaped profile mounting method comprises the following steps:

s1: moving the vehicle body to a set site and fixing the vehicle body on the set site;

s2: operating the first telescopic arm and the second telescopic arm to swing and extend towards the ground, enabling the first bracket and the second bracket to be in contact with the ground, and then placing the middle part of the U-shaped section bar into the bracket of the first bracket and the second bracket;

s3: widening the width dimension of the bracket on the first bracket and the second bracket, and enabling the middle part of the U-shaped profile to rotate in the bracket;

s4: controlling the first telescopic arm and the second telescopic arm to be contracted to the shortest length, then lifting the second platform to a set height through the lifting assembly so as to lift the middle part of the U-shaped profile, and then rotating the operating platform to enable the operating platform to extend along the width direction of the vehicle body;

s5: controlling the first telescopic arm and the second telescopic arm to swing upwards to continuously lift the middle part of the U-shaped section;

s6: after the middle part of the U-shaped section bar is contacted with the roadway top plate, the middle part of the U-shaped section bar is fixed with the roadway top plate through personnel on the operation platform, and then the arm parts at two sides of the U-shaped section bar are respectively fixed with the corresponding roadway side walls.

According to the U-shaped profile mounting method based on the lifting vehicle, the U-shaped profile can be conveniently lifted and fixed, and therefore underground shed erecting operation is facilitated.

In some embodiments, the bracket extends along the width direction of the vehicle body, and in step S1, after the vehicle body is moved to a set place, the position of the vehicle body needs to be adjusted so that the extending direction of the bracket is the same as the width direction of the tunnel, and so that the distance between the left side of the vehicle body and the left side of the tunnel coincides with the distance between the right side of the vehicle body and the right side of the tunnel.

In some embodiments, in step S3, the width dimension of the bracket after adjustment is greater than the maximum length dimension in the cross-section of the U-shaped profile.

In some embodiments, step S7 is further included: after the U-shaped section is installed, the first telescopic arm and the second telescopic arm are contracted to be shortest, the first telescopic arm and the second telescopic arm extend along the up-down direction, the second platform is lowered to the lowest position through the lifting assembly, and the operation platform is rotated and extends along the length direction of the vehicle body.

In some embodiments, the first telescopic arm can swing to one side of the vehicle body width direction, the second telescopic arm can swing to the other side of the vehicle body width direction, the lifting assembly further includes a guide rail, a slider and a clamping jaw, the guide rail is detachably mounted on the second platform, the guide rail is located between the first telescopic arm and the second telescopic arm and extends in the up-and-down direction, the slider is slidably mounted on the guide rail in a guiding manner, the clamping jaw is hinged to the slider, the clamping jaw includes a first clamping arm, a second clamping arm, a connecting rod and an adjuster, the first clamping arm is hinged to the second clamping arm, the adjuster is connected between the first clamping arm and the second clamping arm, the adjuster is adjustable in length to realize clamping adjustment of the first clamping arm and the second clamping arm, and one end of the connecting rod is hinged to the first clamping arm or the second clamping arm, the other end of the connecting rod is hinged with the sliding block.

In some embodiments, the first bracket is disposed at an end of the first telescopic arm and is pivotable relative to the first telescopic arm, the second bracket is disposed at an end of the second telescopic arm and is pivotable relative to the second telescopic arm, the pivot axes of the first bracket and the second bracket extend along a length direction of the vehicle body, the first bracket and the second bracket each include a first frame, a second frame, and a roller, the first frame and the second frame are disposed opposite to each other, a groove is disposed between the first frame and the second frame, the roller is disposed at a groove bottom of the groove, and a rotation axis of the roller extends along the length direction of the vehicle body.

In some embodiments, the first telescopic arm and the second telescopic arm each include a telescopic sleeve and a plurality of first drivers, each telescopic sleeve includes a plurality of sleeves sleeved in sequence, the first driver is arranged between any two adjacent sleeves, one end of each first driver is connected with one of the two adjacent sleeves, the other end of each first driver is connected with the other of the two adjacent sleeves, the length of each first driver is adjustable to adjust the length between the two adjacent sleeves, and the first bracket and the second bracket are arranged at the free end of each telescopic sleeve.

In some embodiments, the operating platform is adjustable in length, the operating platform further includes a second driver, the operating platform includes a first sub-platform and a second sub-platform, one end of the first sub-platform is connected to the second platform, the second sub-platform is assembled at the other end of the first sub-platform in a guiding manner, one end of the second driver is hinged to the first sub-platform, the other end of the second driver is hinged to the second sub-platform, the length of the second driver is adjustable to adjust the length of the operating platform, the operating platform further includes a support member, a first column and a second column, the first column is disposed below the second platform, the second column is disposed below the first sub-platform, one end of the support member is rotatably connected to the first column, and the other end of the support member is rotatably connected to the second column, the length of the support member is adjustable.

In some embodiments, the operation platform comprises a fence detachably mounted on the top surface of the operation platform and extending along the circumferential edge of the operation platform, and the step S4 further comprises the step of mounting the fence on the operation platform before lifting the second platform to the set height;

the automobile body still includes a plurality of roof supporting pieces, and is a plurality of roof supporting pieces establish the bottom of first platform and along the circumference interval arrangement of first platform, roof supporting pieces' S length is adjustable still include following step in step S1, treat the automobile body removes to setting for after the place, will roof supporting pieces extend and contact with ground in order to realize the fixing of automobile body.

In some embodiments, the lifting assembly includes a limiting member and a plurality of third drivers, the plurality of third drivers are disposed on an outer peripheral side of the limiting member, one end of each third driver is hinged to the first platform, the other end of each third driver is hinged to the second platform, the limiting member includes a hinge base, a first member, a second member, and a third member, the hinge base is fixed to the first platform, one end of the first member is hinged to the hinge base, the other end of the first member is hinged to the third member, one end of the second member is hinged to the hinge base, the other end of the second member is hinged to the third member, the first member is located above the second member, one end of the third member is connected to the first member and the second member, the other end of the third member is hinged to the second platform, and the limiting member is adapted to limit an expansion direction of the third drivers when the third drivers expand.

Drawings

Fig. 1 is a schematic structural view of a lift truck according to an embodiment of the present invention.

Fig. 2 is a partially enlarged view of a portion a in fig. 1.

Fig. 3 is a partially enlarged view at B in fig. 1.

Fig. 4 is a schematic moving state diagram of the lifting truck according to the embodiment of the invention.

Fig. 5 is a partially enlarged view at C in fig. 4.

Fig. 6 is a right side view of a lift truck of an embodiment of the present invention.

Fig. 7 is a rear view of a lift truck in accordance with an embodiment of the present invention.

Fig. 8 is a schematic view of the lifting state of the lifting vehicle according to the embodiment of the invention.

Reference numerals:

a vehicle body 1; a first platform 11; a supporting member 12;

a lifting platform 2; a second stage 21; a first pivot groove 211; a second pivot slot 212; a lifting assembly 22; a stopper 221; a hinge base 201; a first piece 202; a second piece 203; a third piece 204; a third driver 222;

a lifting assembly 3; a first telescopic arm 31; a second telescopic arm 32; a telescopic sleeve 301; a first driver 302; a first bracket 33; a second bracket 34; a first frame 303; a second frame 304; a roller 305; a guide rail 35; a slider 36; the clamping jaws 37; a first clamp arm 371; a second clamp arm 372; a regulator 373; a link 374;

an operating platform 4; a first operation platform 41; a second operation platform 42; a first sub-platform 401; a second sub-platform 402; a second driver 403; a support 43; a first post 44; a second column 45; a fence 46;

u-shaped section bar 5.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

As shown in fig. 1 to 8, the method for installing the U-shaped profile 5 based on the lift truck according to the embodiment of the invention comprises a truck body 1, a lifting platform 2, a lifting assembly 3 and an operation platform 4.

The vehicle body 1 is provided with a first platform 11, the lifting platform 2 is arranged on the first platform 11, the lifting platform 2 comprises a lifting component 22 and a second platform 21, and the lifting component 22 is arranged between the first platform 11 and the second platform 21.

Specifically, the vehicle body 1 can move by itself, the first platform 11 is arranged horizontally, the lifting assembly 22 is arranged at the upper end of the first platform 11, the second platform 21 is arranged at the upper end of the lifting assembly 22, and the second platform 21 is substantially parallel to the first platform 11. Therefore, the second platform 21 can move up and down under the action of the lifting assembly 22 by taking the first platform 11 as a base, so that the operator on the second platform 21 can be lifted.

The lifting assembly 3 comprises a first telescopic arm 31 and a second telescopic arm 32, a first bracket 33 is arranged at one end of the first telescopic arm 31, the other end of the first telescopic arm 31 is connected with the second platform 21 and can swing in the up-down direction, a second bracket 34 is arranged at one end of the second telescopic arm 32, the other end of the second telescopic arm 32 is connected with the second platform 21 and can swing in the up-down direction, a bracket with an upward notch is arranged on the first bracket 33 and the second bracket 34, and the width of the bracket is adjustable.

Specifically, the first telescopic arm 31 has a movable end and a fixed end, the fixed end of the first telescopic arm 31 is pivotally connected to the second platform 21, and the movable end of the first telescopic arm 31 is provided with a first bracket 33. Second telescopic arm 32 has a movable end and a fixed end, the fixed end of second telescopic arm 32 is pivotally connected to second platform 21, and the movable end of second telescopic arm 32 is provided with second bracket 34.

When the lifting carriage lifts the U-profile 5, the U-profile 5 can be placed on the first bracket 33 and the second bracket 34. The first telescopic arm 31 can rotate in the plane of the width direction of the vehicle body 1 with the joint of the first telescopic arm 31 and the second platform 21 as an axis, and the second telescopic arm 32 can rotate in the plane of the width direction of the vehicle body 1 with the joint of the second telescopic arm 32 and the second platform 21 as an axis. For example, the first telescopic arm 31 and the second telescopic arm 32 may be both provided at the front side of the vehicle body 1, wherein the first telescopic arm 31 may swing to the left side of the vehicle body 1 and the second telescopic arm 32 may swing to the right side of the vehicle body 1.

It should be noted that in the present embodiment, the first telescopic arm 31 and the second telescopic arm 32 are used synchronously, that is, when the first telescopic arm 31 swings up and down on the left side of the vehicle body 1, the second telescopic arm 32 swings up and down on the right side of the vehicle body 1 synchronously, and in the swinging process, the first bracket 33 at the end of the first telescopic arm 31 and the second bracket 34 at the end of the second telescopic arm 32 are always in the same level, so that on one hand, the U-shaped profile 5 can be lifted up on the first bracket 33 and the second bracket 34, and on the other hand, the situation that the U-shaped profile 5 on the first bracket 33 and the second bracket 34 is tilted and falls off can also be avoided.

Brackets may be provided in both the first bracket 33 and the second bracket 34, the brackets of the first bracket 33 may penetrate the first bracket 33 in the left-right direction, the brackets of the second bracket 34 may penetrate the second bracket 34 in the left-right direction, and the notches of the brackets of the first bracket 33 and the second bracket 34 may be arranged upward. When placing the U-profile 5, the U-profile 5 may be placed in the brackets of the first bracket 33 and the second bracket 34.

The slot width of the bracket of the first bracket 33 and the slot width of the bracket of the second bracket 34 can be adjusted, for example, the first bracket 33 and the second bracket 34 can be arranged separately, the first bracket 33 and the second bracket 34 can be both symmetrically split into two parts, one of the two parts can be the first frame 303, the other can be the second frame 304, the bracket is formed between the first frame 303 and the second frame 304, and when the slot width of the bracket needs to be adjusted, the distance between the first frame 303 and the second frame 304 can be adjusted. Therefore, the bracket can meet the placement requirements of the U-shaped section bars 5 with different widths, and the flexibility and the adaptability of the use of the bracket are improved.

The operation platform 4 is provided on the second platform 21 and is swingable in the horizontal direction.

Specifically, as shown in fig. 1 and 4, the operation platform 4 may include two parts arranged in bilateral symmetry, that is, the operation platform 4 may include a first operation platform 41 and a second operation platform 42, wherein the first operation platform 41 is disposed on the left side of the second platform 21, the second operation platform 42 is disposed on the right side of the second platform 21, and both the first operation platform 41 and the second operation platform 42 are pivotally assembled with the second platform 21, as shown in fig. 4, wherein the first operation platform 41 may horizontally rotate to the left side by 90 °, and the second operation platform 42 may horizontally rotate to the right side by 90 °.

Therefore, as shown in fig. 4, when the first operation platform 41 and the second operation platform 42 extend in the front-rear direction, the operation platform 4 is in the retracted state, which is convenient for reducing the space occupied by the lift truck, and improves the trafficability of the lift truck. As shown in fig. 1, when the first operation platform 41 is rotated to the left side of the vehicle body 1 and the second operation platform 42 is rotated to the right side of the vehicle body 1, the first operation platform 41 and the second operation platform 42 extend along the width direction of the roadway, and an operator can move on the first operation platform 41 and the second operation platform 42, so that any position of the U-shaped profile 5 can be fixed in the width direction of the roadway.

It is understood that in some other embodiments, only one operation platform 4 may be disposed on the second platform 21, and in this case, the operation platform 4 may rotate to the left side of the vehicle body 1 or rotate to the right side of the vehicle body 1.

The installation method of the U-shaped section bar 5 comprises the following steps:

s1: the vehicle body 1 is moved to a set place and fixed at the set place.

Specifically, set for the place and can be for the tunnel tunnelling in the pit wait to put up the canopy position, lift truck can utilize automobile body 1 to remove to set for the place, then can fix automobile body 1 in setting for the place, for example, can die the walking wheel or the walking track lock of automobile body 1, also can place the barrier around the walking wheel of automobile body 1 to the condition that automobile body 1 moved at will when having avoided the operation of putting up the canopy has guaranteed the stability of putting up the canopy and has gone on.

S2: the first telescopic arm 31 and the second telescopic arm 32 are operated to swing and extend towards the ground, the first bracket 33 and the second bracket 34 are made to be in contact with the ground, and then the middle part of the U-shaped section bar 5 is placed in the bracket of the first bracket 33 and the second bracket 34.

Specifically, as shown in fig. 1, the positions of the first telescopic arm 31 and the second telescopic arm 32 may be first adjusted, and both the first telescopic arm 31 and the second telescopic arm 32 extend downward, then the first telescopic arm 31 and the second telescopic arm 32 may be controlled to extend until the free end of the first telescopic arm 31 and the free end of the second telescopic arm 32 contact with the roadway floor, and then the U-shaped profile 5 may be placed in the bracket of the first bracket 33 and the second bracket 34.

Because the free end of first flexible arm 31 and the free end of second flexible arm 32 all contact with the tunnel bottom plate, from this, make first bracket 33 and second bracket 34 can be in lower position department on the one hand to can reduce operation workman's transport intensity, reduce work load, on the other hand because U type section bar 5 only need the lower height of lift, promoted the security of operation. In addition, because first flexible arm 31 and second flexible arm 32 all contact with ground to make first flexible arm 31 and second flexible arm 32's structure relatively more stable, avoided U type section bar 5 to place the in-process, the condition of first flexible arm 31 and second flexible arm 32 swing at will.

It should be noted that the U-shaped section bar 5 includes a middle section, a first side arm and a second side arm, wherein the first side arm and the second side arm are substantially parallel, the first side arm is connected to one end of the middle section, the second side arm is connected to the other end of the middle section, and both the first side arm and the second side arm are substantially perpendicular to the middle section. When the U-shaped profile 5 is placed, the middle section can be placed in the brackets of the first bracket 33 and the second bracket 34, and the first side arm and the second side arm can be located on the front side of the vehicle body 1 and extend in the front-rear direction.

It will be appreciated that in other embodiments, the first bracket 33 at the end of the first telescopic arm 31 and the second bracket 34 at the end of the second telescopic arm 32 may contact the ground after the first telescopic arm 31 and the second telescopic arm 32 are swung to extend.

S3: the width dimension of the brackets on the first bracket 33 and the second bracket 34 is widened, and the middle part of the U-shaped section bar 5 is enabled to rotate in the brackets.

Specifically, after the U-shaped section bar 5 is placed in the brackets of the first bracket 33 and the second bracket 34, the slot width of the bracket of the first bracket 33 and the slot width of the bracket of the second bracket 34 are adjusted, and since the middle section (middle part) of the U-shaped section bar 5 is placed in the bracket, the slot width of the bracket can be adjusted by observing with human eyes, and it is only necessary to ensure that the U-shaped section bar 5 can rotate in the bracket after adjustment.

S4: the first telescopic arm 31 and the second telescopic arm 32 are controlled to be contracted to the shortest length, then the second platform 21 is lifted to a set height through the lifting assembly 22 so as to lift the middle part of the U-shaped profile 5, and then the operating platform 4 is rotated so that the operating platform 4 extends along the width direction of the vehicle body 1.

Specifically, after the width of the bracket to be supported is adjusted, the first telescopic arm 31 and the second telescopic arm 32 can be controlled to contract at first, and when the first telescopic arm 31 and the second telescopic arm 32 both contract to the shortest dimension, the middle section of the U-shaped profile 5 is lifted upwards in the contraction process, and the first side arm and the second side arm of the U-shaped profile 5 swing upwards with the free ends as pivots, so that the initial lifting of the U-shaped profile 5 is realized.

Then, the lifting assembly 22 can be operated to extend and lift the second platform 21, and since the first telescopic arm 31 and the second telescopic arm 32 are both connected to the second platform 21, the second platform 21 will drive the first telescopic arm 31 and the second telescopic arm 32 to move upwards, and at the same time, the U-shaped profile 5 will continue to move upwards under the pulling of the first telescopic arm 31 and the second telescopic arm 32.

After the second platform 21 is lifted to the set height, it should be noted that when the distance between the second platform 21 and the top plate of the roadway is enough for the operator on the second platform 21 to freely work, it is determined that the second platform 21 reaches the set height. The operation platform 4 can then be operated to rotate, and the operation platform 4 can be switched from extending along the front-back direction to extending along the left-right direction, i.e. the operation platform 4 can be switched to the position shown in fig. 1 from the position shown in fig. 4. Therefore, the displacement of the operator in the width direction of the roadway is increased, so that the operator can fix each position of the U-shaped section 5.

S5: the first telescopic arm 31 and the second telescopic arm 32 are operated to swing upwards to continue lifting the middle part of the U-profile 5.

Specifically, after the operation platform 4 is rotationally switched, the first telescopic arm 31 and the second telescopic arm 32 can be driven to swing, wherein the first telescopic arm 31 swings to the left and upward, and the second telescopic arm 32 swings to the right and upward, so that the U-shaped profile 5 on the first bracket 33 and the second bracket 34 can be continuously lifted by the first telescopic arm 31 and the second telescopic arm 32.

Note that, in this step, the first telescopic arm 31 and the second telescopic arm 32 can be extended while rotating until the middle section of the U-shaped profile 5 comes into contact with the roof of the roadway. Preferably, in other embodiments, first telescopic arm 31 and second telescopic arm 32 may also be rotated first, and after first telescopic arm 31 and second telescopic arm 32 are extended upwards, first telescopic arm 31 and second telescopic arm 32 are manipulated to extend. Because the length dimension of first flexible arm 31 and second flexible arm 32 is less, at first flexible arm 31 and the swing in-process of second flexible arm 32, first flexible arm 31 and second flexible arm 32 have higher structural strength and the moment effect that receives is less to be favorable to the stable lifting of U type section bar 5.

It should be noted that when the first telescopic arm 31 and the second telescopic arm 32 swing, both the first bracket 33 and the second bracket 34 are reciprocally movable with respect to the extending direction of the middle section of the U-shaped profile 5.

S6: after the middle part of the U-shaped section bar 5 is contacted with the roadway roof, the middle part of the U-shaped section bar 5 is fixed with the roadway roof by personnel on the operation platform 4, and then the arm parts at two sides of the U-shaped section bar 5 are respectively fixed with the corresponding roadway side walls.

Specifically, after the U-shaped profile 5 is lifted to be in contact with the roof of the roadway, the swinging extension of the first telescopic arm 31 and the second telescopic arm 32 is stopped, and the first telescopic arm 31 and the second telescopic arm 32 are kept at the positions, and then an operator on the operation platform 4 can move on the operation platform 4, so that the U-shaped profile 5 can be fixedly connected with the roof or the side wall of the roadway through fasteners such as screws or bolts.

According to the method for installing the U-shaped section 5 based on the lifting vehicle, the U-shaped section 5 is lifted and fixed conveniently, in the shed erecting operation process, an operator only needs to convey the U-shaped section 5 to the first bracket 33 and the second bracket 34, then stands on the operation platform 4 to connect and fix the U-shaped section 5 and the top plate, the shed erecting operation is convenient to operate, efficient and convenient, the labor intensity of the worker is reduced, the situation that the production is influenced due to the fact that an anchor driving machine is occupied for a long time in the related technology is avoided, and the production efficiency of a mine is improved.

In some embodiments, the bracket extends along the width direction of the vehicle body 1, and in step S1, after the vehicle body 1 is moved to the set site, it is necessary to adjust the position of the vehicle body 1 so that the extending direction of the bracket is the same as the width direction of the tunnel and so that the distance between the left side of the vehicle body 1 and the left side of the tunnel coincides with the distance between the right side of the vehicle body 1 and the right side of the tunnel.

Specifically, the brackets of the first bracket 33 and the brackets of the second bracket 34 extend in the left-right direction, and in step S1, after the vehicle body 1 is moved to the position where the canopy is to be installed, the specific position of the vehicle body 1 may be adjusted, for example, the central axis of the tunnel floor may be measured first, then the vehicle body 1 is moved to the central axis of the tunnel floor, and the symmetry axis of the vehicle body 1 is located above the central axis of the tunnel floor and is kept substantially parallel, so that the distance between the left side of the vehicle body 1 and the left side of the tunnel is substantially consistent with the distance between the right side of the vehicle body 1 and the right side of the tunnel, thereby facilitating the centering of the subsequent U-shaped section 5, avoiding the situation that one side of the U-shaped section 5 is heavy during the lifting process, and facilitating the smooth lifting of the U-shaped section 5.

In some embodiments, in step S3, the width dimension of the bracket after adjustment is larger than the maximum length dimension in the cross section of the U-shaped profile 5.

Specifically, the U-shaped section 5 may be square steel, i-steel, V-shaped steel, etc., for example, when the U-shaped section 5 is square steel, the cross-sectional area of the U-shaped section 5 is rectangular, the maximum length dimension in the cross-sectional area is the diagonal length of the rectangular cross-section, and after adjustment, the width dimension of the bracket is greater than the diagonal length, so that the middle section of the U-shaped section 5 may rotate in the bracket, and when the U-shaped section 5 is lifted, the U-shaped section 5 may swing by itself under the action of gravity, thereby satisfying the requirement that the U-shaped section 5 adjusts the azimuth angle by itself.

In some embodiments, step S7 is further included: after the U-shaped section 5 is installed, the first telescopic arm 31 and the second telescopic arm 32 are contracted to the shortest length, the first telescopic arm 31 and the second telescopic arm 32 are extended along the up-down direction, the second platform 21 is lowered to the lowest position through the lifting assembly 22, and the operation platform 4 is rotated and extended along the length direction of the vehicle body 1.

Specifically, after the U-shaped profile 5 is connected and fixed with the roadway roof, the first telescopic arm 31 and the second telescopic arm 32 can be firstly contracted to the shortest length, and then the first telescopic arm 31 and the second telescopic arm 32 are swung downwards, and the final positions of the first telescopic arm 31 and the second telescopic arm 32 are shown in fig. 4. The second platform 21 can then be lowered and the operation platform 4 switched to a position extending in the front-rear direction, as shown in particular in fig. 4. Therefore, the trafficability of the lifting vehicle can be enhanced, and the lifting vehicle is convenient to move to the next set place.

In some embodiments, the first telescopic arm 31 can swing to one side of the width direction of the vehicle body 1, the second telescopic arm 32 can swing to the other side of the width direction of the vehicle body 1, the lifting assembly 3 further comprises a guide rail 35, a slider 36 and a clamping jaw 37, the guide rail 35 is detachably mounted on the second platform 21, the guide rail 35 is located between the first telescopic arm 31 and the second telescopic arm 32 and extends along the up-and-down direction, the slider 36 is slidably mounted on the guide rail 35 in a guiding manner, the clamping jaw 37 is hinged with the slider 36, the clamping jaw 37 comprises a first clamping arm 371, second arm lock 372, connecting rod 374 and regulator 373, first arm lock 371 and second arm lock 372 are connected in an articulated way, and regulator 373 connects between first arm lock 371 and second arm lock 372, and regulator 373 is adjustable in length in order to realize that first arm lock 371 and second arm lock 372 clamp and adjust, and one end of connecting rod 374 is articulated with first arm lock 371 or second arm lock 372, and the other end of connecting rod 374 is articulated with slider 36.

Specifically, as shown in fig. 1 and 8, the first telescopic arm 31 can be rotated 180 ° to the upper left from the vertically downward state, and the second telescopic arm 32 can be rotated 180 ° to the upper right from the vertically downward state. Therefore, when lifting the U-shaped section 5, the first telescopic arm 31 and the second telescopic arm 32 can be extended and retracted to lift the U-shaped section 5, and the first telescopic arm 31 and the second telescopic arm 32 can also be rotated outward, so that the first telescopic arm 31 and the second telescopic arm 32 swing obliquely upward, and the U-shaped section 5 can be continuously lifted, and the height of the U-shaped section 5 can be made to exceed the second platform 21.

The guide rail 35 is provided at the front ends of the first platform 11 and the second platform 21 and located at the front side of the vehicle body 1, the guide rail 35 extends in the vertical direction, and the bottom end of the guide rail 35 may contact the ground or may be spaced from the ground by a certain distance. The guide rail 35 is provided with a guide groove, and the slider 36 is fitted in the guide groove and can move up and down along the extending direction of the guide rail 35. The clamping jaw 37 can be directly hinged with the sliding block 36, and the clamping jaw 37 can also be hinged with the sliding block 36 through a connecting piece. Therefore, when the sliding block 36 moves to the top end of the guide rail 35, the clamping jaw 37 can be turned to the rear side of the guide rail 35, so that the condition that the U-shaped profile 5 is interfered with the clamping jaw 37 is avoided.

It should be noted that the guide rail 35 needs to be provided between the first telescopic arm 31 and the second telescopic arm 32, so that the first telescopic arm 31 and the second telescopic arm 32 can be prevented from touching and interfering with the guide rail 35 during the rotation and swing processes.

In the use, after the first side arm and the second side arm of U type section bar 5 all extend along upper and lower direction, can utilize clamping jaw 37 to press from both sides the interlude of U type section bar 5, then can utilize first flexible arm 31 and second flexible arm 32 to continue to lift U type section bar 5, the in-process of lifting, clamping jaw 37 can be fixed with the interlude clamp of U type section bar 5, and clamping jaw 37 can rise along with U type section bar 5 is synchronous, therefore, can avoid the condition of the unstability of U type section bar 5 in the lift process, the even running of lift process has been guaranteed.

As shown in fig. 3, the first clamping arm 371 is disposed at the front side of the second clamping arm 372, the upper end of the first clamping arm 371 is hinged to one end of the adjuster 373, and the upper end of the second clamping arm 372 is hinged to the other end of the adjuster 373. The middle section of the first clamping arm 371 is hinged with the middle section of the second clamping arm 372, and the upper end of the second clamping arm 372 is hinged with the connecting rod 374. Thus, the lower ends of the first clamping arm 371 and the second clamping arm 372 can be used for clamping the U-shaped profile 5. In the using process, the distance between the upper ends of the first clamping arm 371 and the second clamping arm 372 can be adjusted by adjusting the length of the adjuster 373, so that the distance between the lower ends of the first clamping arm 371 and the second clamping arm 372 can be changed, and the U-shaped section 5 can be clamped or loosened.

It will be appreciated that in other embodiments, the jaws 37 may be other jaws 37 such as spring clips.

In some embodiments, the first bracket 33 is provided at an end of the first telescopic arm 31 and is pivotable with respect to the first telescopic arm 31, the second bracket 34 is provided at an end of the second telescopic arm 32 and is pivotable with respect to the second telescopic arm 32, the pivot axes of the first bracket 33 and the second bracket 34 each extend along a length direction of the vehicle body 1, the first bracket 33 and the second bracket 34 each include a first frame 303, a second frame 304, and a roller 305, the first frame 303 and the second frame 304 are arranged oppositely, and a groove is provided between the first frame 303 and the second frame 304, the roller 305 is provided at a groove bottom of the groove, and a rotation axis of the roller 305 extends along the length direction of the vehicle body 1.

Specifically, as shown in fig. 4, the first bracket 33 is pivotally attached to the free end of the first telescopic arm 31 by a pivot shaft, the pivot shaft of the first bracket 33 extends in the front-rear direction, the second bracket 34 is pivotally attached to the free end of the second telescopic arm 32 by a pivot shaft, and the pivot shaft of the second bracket 34 extends in the front-rear direction, whereby both the first bracket 33 and the second bracket 34 can rotate in the width plane (the plane perpendicular to the front-rear direction) of the vehicle body 1. In the process of lifting the U-shaped section bar 5, along with the height change of the U-shaped section bar 5, the first bracket 33 and the first telescopic arm 31 as well as the second bracket 34 and the second telescopic arm 32 can rotate automatically, so that the notch of the bracket on the first bracket 33 and the notch of the bracket on the second bracket 34 are always upward, and the translational lifting of the U-shaped section bar 5 is ensured.

As shown in fig. 5, each of the first and

second brackets

33 and 34 includes a first frame 303, a second frame 304, and rollers 305, wherein a bottom end of the first frame 303 and a bottom end of the second frame 304 may be connected by a shaft, and a top end of the first frame 303 and a top end of the second frame 304 may be spaced apart and form a groove, i.e., a bracket. The roller 305 may be installed in a groove between the first frame 303 and the second frame 304, and a rotation axis of the roller 305 extends in the front-rear direction, that is, the roller 305 may rotate in the width plane of the vehicle body 1. Therefore, when the first bracket 33 and the second bracket 34 move relative to the U-shaped profile 5, rolling friction can be formed between the U-shaped profile 5 and the first bracket 33, and between the U-shaped profile 5 and the second bracket 34, so that the first bracket 33 and the second bracket 34 can move more smoothly, and the stable lifting of the U-shaped profile 5 is ensured.

It will be appreciated that the spacing between the first and

second brackets

303, 304 may be adjustable, thereby allowing adjustment of the bracket slot width and improving the adaptability of the bracket to different sizes of U-shaped profiles 5. For example, the first frame 303 and the second frame 304 may be fixed by a long bolt and a nut, and when the slot width of the bracket needs to be adjusted, the first frame 303 and the second frame 304 may be fixed by adding a partition plate therebetween and then clamping the long bolt and the nut.

In some embodiments, each of the first telescopic arm 31 and the second telescopic arm 32 includes a telescopic sleeve 301 and a plurality of first drivers 302, the telescopic sleeve 301 includes a plurality of sleeves sequentially sleeved, the first driver 302 is disposed between any two adjacent sleeves, one end of the first driver 302 is connected to one of the two adjacent sleeves, the other end of the first driver 302 is connected to the other of the two adjacent sleeves, the length of the first driver 302 is adjustable to adjust the length between the two adjacent sleeves, and the first bracket 33 and the second bracket 34 are disposed at the free end of the telescopic sleeve 301.

Specifically, as shown in fig. 4, the first driver 302 includes a fixed end and a telescopic end, each first driver 302 corresponds to two sleeves sequentially sleeved, the fixed end of the first driver 302 is fixedly connected to one of the two sleeves sequentially sleeved with a larger diameter, and the telescopic end of the first driver 302 is fixedly connected to one of the two sleeves sequentially sleeved with a smaller diameter. Thus, when the first actuator 302 is extended, the distance between the first actuator 302 and the fixing points fixedly connected to the two sleeves sequentially sleeved increases, so that the two sleeves slide relatively, and the total length of the plurality of sleeves sequentially sleeved is extended, that is, the first telescopic arm 31 or the second telescopic arm 32 is extended.

From this, at the in-process that U type section bar 5 lifted, telescopic sleeve 301 bears most effort to guaranteed the structural strength of first flexible arm 31 and the flexible arm 32 of second, avoided the damage of first flexible arm 31 and the flexible arm 32 of second, guaranteed the stability of operation.

In some embodiments, the operation platform 4 is adjustable in length, the operation platform 4 further includes a second driver 403, the operation platform 4 includes a first sub-platform 401 and a second sub-platform 402, one end of the first sub-platform 401 is connected to the second platform 21, the second sub-platform 402 is guided and mounted at the other end of the first sub-platform 401, one end of the second driver 403 is hinged to the first sub-platform 401, the other end of the second driver 403 is hinged to the second sub-platform 402, the length of the second driver 403 is adjustable to adjust the length of the operation platform 4, the operation platform 4 further includes a support 43, first post 44 and second post 45, first post 44 is established in the below of second platform 21, and second post 45 is established in the below of first sub-platform 401, and the one end of support piece 43 rotates with first post 44 and links to each other, and the other end of support piece 43 rotates with second post 45 and links to each other, and the length of support piece 43 is adjustable.

Specifically, as shown in fig. 6, the lower side of the operation platform 4 is provided with a second driver 403, one end of the second driver 403 is connected to the lower end of the first sub-platform 401, and the other end of the second driver 403 is connected to the lower end of the second sub-platform 402. The second sub-platform 402 can be received in the lower side of the first sub-platform 401, and the second sub-platform 402 is slidably connected to the first sub-platform 401. Thus, when the second actuator 403 extends, the second sub-platform 402 is pushed to slide out from the lower side of the first sub-platform 401 to the extending direction of the first sub-platform 401, so that the operation platform 4 extends.

A first column 44 and a second column 45 are arranged below the first sub-platform 401, wherein the first column 44 is arranged at one end of the first sub-platform 401 close to the guide rail 35, the second column 45 is arranged at the other end of the first sub-platform 401, the first column 44 and the second column 45 both extend along the up-down direction, and the length of the first column 44 is greater than that of the second column 45. One end of the supporting member 43 is sleeved on the outer peripheral side of the first column 44 and is rotatably connected with the lower end of the first column 44, the other end of the supporting member 43 is sleeved on the outer peripheral side of the second column 45 and is rotatably connected with the lower end of the second column 45, and a certain included angle is formed between the supporting member 43 and the second platform 21. Therefore, the supporting member 43, the first sub-platform 401 and the first column 44 generally form a triangular structure, so as to support the operation platform 4, thereby ensuring the structural stability of the operation platform 4.

It should be noted that in some embodiments, the length of the supporting member 43 can be adjusted, for example, the supporting member 43 can include a first screw, a threaded sleeve and a second screw, the first screw is threadedly mounted at one end of the threaded sleeve, the second screw is threadedly mounted at the other end of the threaded sleeve, and when the length of the supporting member 43 needs to be adjusted, the threaded sleeve is rotated.

In some embodiments, the operation platform 4 includes a first operation platform 41 and a second operation platform 42, the second platform 21 is provided with a first pivot slot 211 and a second pivot slot 212, at least a portion of the first operation platform 41 is fitted in the first pivot slot 211 and is rotatable in the first pivot slot 211 toward one side in the width direction of the vehicle body 1, and at least a portion of the second operation platform 42 is fitted in the second pivot slot 212 and is rotatable in the second pivot slot 212 toward the other side in the width direction of the vehicle body 1.

Specifically, as shown in fig. 4, the first pivot groove 211 and the second pivot groove 212 are arranged in left-right symmetry on the upper end surface of the second platform 21, the first operation platform 41 and the second operation platform 42 include a fixed end and a free end, the fixed end of the first operation platform 41 is engaged with the first pivot groove 211 and can rotate in the first pivot groove 211, and the first operation platform 41 can rotate from a state of extending in the front-rear direction to a state of extending in the left-right direction; the fixed end of the second operation platform 42 is engaged with the second pivot groove 212 and can rotate in the second pivot groove 212, and the second operation platform 42 can rotate to the right side from a state of extending in the front-rear direction to a state of extending in the left-right direction. From this, operation platform 4 can expand and pack up, and operation platform 4 extends along fore-and-aft direction when packing up, and operation platform 4 all is located automobile body 1 in the projection of vertical direction this moment in the projection of vertical direction, has saved the space that operation platform 4 took under the shrink state.

It should be noted that, when the first operation platform 41 and the second operation platform 42 extend in the front-rear direction and most of the second sub-platform 402 extends from the lower end of the first sub-platform 401, the operation platform 4 is in the retracted state; the operation platform 4 is in the unfolded state when the first operation platform 41 and the second operation platform 42 extend in the left-right direction and most of the second sub-platform 402 is located at the lower side of the first sub-platform 401.

During the rotation of the first operating platform 41, the first operating platform 41 can be in contact with the groove wall of the first pivoting groove 211, and during the rotation of the second operating platform 42, the second operating platform 42 can be in contact with the groove wall of the first pivoting groove 211. Therefore, the stability of the first operating platform 41 and the second operating platform 42 in the rotating process can be enhanced, and the stable switching between the retracted state and the deployed state of the first operating platform 41 and the second operating platform 42 is facilitated.

In some embodiments, the operation platform 4 comprises a fence 46, the fence 46 is detachably mounted on the top surface of the operation platform 4 and extends along the circumferential edge of the operation platform 4, and the step of mounting the fence 46 on the operation platform 4 before lifting the second platform 21 to the set height is further included in the step of S4.

Specifically, as shown in fig. 1 and 4, the outer edge of the upper end surface of the operation platform 4 is provided with a plurality of slots, and the lower end of the rail 46 can be matched with the slots, so that the rail 46 can be detachably mounted on the outer edge of the upper end surface of the operation platform 4. Thus, the fence 46 can be removed when the lift car is stowed, further reducing the space occupied by the lift car.

The vehicle body 1 further includes a plurality of roof supporting members 12, the plurality of roof supporting members 12 are provided at the bottom of the first platform 11 and are arranged at intervals along the circumferential direction of the first platform 11, the length of the roof supporting members 12 is adjustable, and in step S1, after the vehicle body 1 moves to a set place, the roof supporting members 12 are extended and are in contact with the ground to fix the vehicle body 1.

Specifically, as shown in fig. 4 and 6, the supporting members 12 are provided at four corners of the lower bottom surface of the first platform 11, and the supporting members 12 can be extended and fixed. Therefore, when the first platform 11 is supported on the uneven tunnel ground, the lengths of the first platform 11 can be adjusted to different lengths through different supporting pieces 12, so that the first platform 11 is kept horizontal, and the first platform 11 and parts above the first platform 11 are stably supported in the tunnel. Secondly, since the supporting member 12 can support the ground, it can play a role of fixing the vehicle body 1.

In some embodiments, the lifting assembly 22 includes a limiting member 221 and a plurality of third drivers 222, the plurality of third drivers 222 are disposed on the outer periphery of the limiting member 221, one end of the third driver 222 is hinged to the first platform 11, the other end of the third driver 222 is hinged to the second platform 21, the limiting member 221 includes a hinge base 201 and a first member 202, the hinge base 201 is fixed on the first platform 11, one end of the first member 202 is hinged to the hinge base 201, the other end of the first member 202 is hinged to the third member 204, one end of the second member 203 is hinged to the hinge base 201, the other end of the second member 203 is hinged to the third member 204, the first member 202 is located above the second member 203, one end of the third member 204 is connected to the first member 202 and the second member 203, the other end of the third member 204 is hinged to the second platform 21, and the limiting member 221 is suitable for limiting the telescopic direction of the third driver 222 when the third driver 222 is telescopic.

Specifically, as shown in fig. 6, the limiting member 221 is disposed at the front end of the first platform 11, the hinge base 201, the first member 202, the second member 203, and the third member 204 form a multi-link mechanism in a vertical plane extending in the front-rear direction, the hinge base 201 may be an L-shaped base, the first member 202, the second member 203, and the third member 204 may be rectangular plates, as shown in fig. 6, the bottom end of the first member 202 may be pivotally assembled with one free end of the hinge base 201, the bottom end of the second member 203 may be pivotally assembled with the other free end of the hinge base 201, the bottom end of the third member 204 may be pivotally assembled with the top end of the first member 202 and the top end of the second member 203, and the top end of the third member 204 may be pivotally assembled with the second platform 21. Thus, first member 202, second member 203, and third member 204 provide a linkage effect, which allows the upper end of third member 204 to move only up and down in the vertical direction when first member 202, second member 203, and third member 204 are actuated. Therefore, when the third driver 222 extends and contracts, the second platform 21 moves in parallel in the vertical direction, and the situation that the second platform 21 is inclined in the moving process is avoided.

It should be noted that, in this embodiment, the top end of each third driver 222 may be hinged to the second platform 21, and the bottom end of each third driver 222 may be hinged to the first platform 11, so that the third drivers 222 have a shock absorption effect, and the situation that the end portions of the third drivers 222 are rigidly touched when the second platform 21 is stressed is avoided.

In this embodiment, the left side, the right side and the rear side of the limiting member 221 are respectively provided with a third driver 222, and the third drivers 222 are distributed in a triangular shape, so that the stability of the plurality of third drivers 222 when lifting and supporting the second platform 21 can be improved.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A U-shaped section bar installation method based on a lifting vehicle is characterized by comprising a vehicle body, a lifting platform, a lifting assembly and an operation platform, wherein the vehicle body is provided with a first platform; the lifting platform is arranged on the first platform and comprises a lifting assembly and a second platform, and the lifting assembly is arranged between the first platform and the second platform; the lifting assembly comprises a first telescopic arm and a second telescopic arm, a first bracket is arranged at one end of the first telescopic arm, the other end of the first telescopic arm is connected with the second platform and can swing up and down, a second bracket is arranged at one end of the second telescopic arm, the other end of the second telescopic arm is connected with the second platform and can swing up and down, brackets with upward notches are arranged on the first bracket and the second bracket, and the width size of each bracket is adjustable; the operating platform is arranged on the second platform and can swing in the horizontal direction;

the U-shaped profile mounting method comprises the following steps:

2. The U-shaped section bar installing method based on the lift truck as claimed in claim 1, wherein the bracket extends along the width direction of the truck body, and after the truck body is moved to a set place in step S1, the position of the truck body needs to be adjusted so that the extending direction of the bracket is the same as the width direction of the tunnel, and the distance between the left side of the truck body and the left side of the tunnel is the same as the distance between the right side of the truck body and the right side of the tunnel.

3. The method of claim 1, wherein in step S3, the width dimension of the bracket is adjusted to be larger than the maximum length dimension in the cross section of the U-shaped profile.

4. The method for installing U-shaped section bar based on lifting car according to claim 1, characterized by further comprising the step S7: after the U-shaped section is installed, the first telescopic arm and the second telescopic arm are contracted to be shortest, the first telescopic arm and the second telescopic arm extend along the up-down direction, the second platform is lowered to the lowest position through the lifting assembly, and the operation platform is rotated and extends along the length direction of the vehicle body.

5. The method for installing U-shaped section bar based on lifting vehicle as claimed in claim 1, wherein the first telescopic arm can swing to one side of the vehicle body width direction, the second telescopic arm can swing to the other side of the vehicle body width direction, the lifting assembly further comprises a guide rail, a slide block and a clamping jaw, the guide rail is detachably installed on the second platform, the guide rail is located between the first telescopic arm and the second telescopic arm and extends along the up-and-down direction, the slide block is slidably assembled on the guide rail in a guiding way, the clamping jaw is hinged with the slide block, the clamping jaw comprises a first clamping arm, a second clamping arm, a connecting rod and an adjuster, the first clamping arm is hinged with the second clamping arm, the adjuster is connected between the first clamping arm and the second clamping arm, and the length of the adjuster is adjustable to realize the clamping adjustment of the first clamping arm and the second clamping arm, one end of the connecting rod is hinged to the first clamping arm or the second clamping arm, and the other end of the connecting rod is hinged to the sliding block.

6. A method for installing a U-shaped section bar according to claim 1, characterized in that the first bracket is provided at the end of the first telescopic arm and is pivotable relative to the first telescopic arm, the second bracket is provided at the end of the second telescopic arm and is pivotable relative to the second telescopic arm, the pivoting axes of the first bracket and the second bracket extend along the length direction of the vehicle body, the first bracket and the second bracket each comprise a first frame, a second frame and a roller, the first frame and the second frame are arranged oppositely, a groove is provided between the first frame and the second frame, the roller is provided at the groove bottom of the groove, and the rotation axis of the roller extends along the length direction of the vehicle body.

7. The U-shaped profile installation method based on the lifting vehicle as claimed in claim 1, wherein the first telescopic arm and the second telescopic arm each comprise a telescopic sleeve and a plurality of first drivers, the telescopic sleeve comprises a plurality of sleeves which are sequentially sleeved, the first drivers are arranged between any two adjacent sleeves, one end of each first driver is connected with one of the two adjacent sleeves, the other end of each first driver is connected with the other of the two adjacent sleeves, the length of each first driver is adjustable to adjust the length between the two adjacent sleeves, and the first bracket and the second bracket are arranged at free ends of the telescopic sleeves.

8. The method for installing U-shaped section bar based on lifting vehicle as claimed in claim 1, wherein the operation platform is adjustable in length, the operation platform further comprises a second driver, the operation platform comprises a first sub-platform and a second sub-platform, one end of the first sub-platform is connected with the second platform, the second sub-platform is assembled at the other end of the first sub-platform in a guiding manner, one end of the second driver is hinged with the first sub-platform, the other end of the second driver is hinged with the second sub-platform, the length of the second driver is adjustable to realize the adjustment of the length of the operation platform, the operation platform further comprises a support, a first column and a second column, the first column is arranged below the second platform, the second column is arranged below the first sub-platform, and one end of the support is rotatably connected with the first column, the other end of the supporting piece is rotatably connected with the second column, and the length of the supporting piece is adjustable.

9. A method for installing a U-profile based on a lift car according to claim 1, wherein the operation platform comprises a fence detachably mounted on the top surface of the operation platform and extending along the circumferential edge of the operation platform, and further comprising the step of mounting the fence on the operation platform before lifting the second platform to a set height in step S4;

10. The method for installing a U-shaped profile based on a lifting vehicle according to any one of claims 1-9, wherein the lifting assembly comprises a limiting member and a plurality of third drivers, the plurality of third drivers are arranged on the outer peripheral side of the limiting member, one end of each third driver is hinged with the first platform, the other end of each third driver is hinged with the second platform, the limiting member comprises a hinged seat, a first member, a second member and a third member, the hinged seat is fixed on the first platform, one end of the first member is hinged with the hinged seat, the other end of the first member is hinged with the third member, one end of the second member is hinged with the hinged seat, the other end of the second member is hinged with the third member, the first member is positioned above the second member, and one end of the third member is connected with the first member and the second member, the other end of the third piece is hinged to the second platform, and the limiting piece is suitable for limiting the stretching direction of the third driver when the third driver stretches.