CN112502742A

CN112502742A - Tunnel invert lining cutting platform truck

Info

Publication number: CN112502742A
Application number: CN202011366363.9A
Authority: CN
Inventors: 冯佳; 王语嫣; 黄进
Original assignee: Wenzhou Yinfei Technology Co ltd
Current assignee: Wenzhou Yinfei Technology Co ltd
Priority date: 2020-11-29
Filing date: 2020-11-29
Publication date: 2021-03-16

Abstract

The invention belongs to the field of tunnel construction equipment, and particularly relates to a tunnel inverted arch lining trolley, wherein the tops of two side columns symmetrically and fixedly connected with the top of a base are fixedly connected with the same top cover, a power assembly in a mounting groove at the bottom of the base is in transmission connection with a ball screw, two ends of the ball screw are respectively in rotary connection with the inner walls of two sides of the mounting groove, two gears are symmetrically and fixedly sleeved on the ball screw, a connecting plate in the mounting groove is symmetrically and fixedly connected with two toothed plates meshed with the two gears, the bottom of the connecting plate is respectively provided with a driving wheel and a driven wheel, an output shaft of a first motor is fixedly connected with the bottom of the connecting plate is fixedly sleeved with a rotating wheel, the rotating wheel and the driving wheel are in transmission connection with the same transmission belt, the tops of two supporting columns at the top of the, the moving is inconvenient, and workers do not have good protection for binding the inverted arch reinforcing steel bars, and the safety is poor.

Description

Tunnel invert lining cutting platform truck

Technical Field

The invention belongs to the field of tunnel construction equipment, and relates to a tunnel inverted arch lining trolley.

Background

At the present stage, during tunnel engineering construction, the inverted arch is excavated and tunneled along a tunnel face, a foundation pit of the inverted arch is excavated firstly during inverted arch construction, then inverted arch reinforcing steel bars are bound one by one manually, an inverted arch template is installed, concrete is poured for construction, and after the inverted arch concrete is solidified, the template is removed and filling concrete is poured.

The existing tunnel invert lining trolley is inconvenient to move, workers do not have good protection for binding invert reinforcing steel bars, and safety is poor, so that the tunnel invert lining trolley is provided for solving the problems.

Disclosure of Invention

In view of the above, the invention provides a tunnel inverted arch lining trolley, which aims to solve the problems that the existing tunnel inverted arch lining trolley is inconvenient to move, does not have good protection for binding inverted arch reinforcing steel bars by workers and is poor in safety.

In order to achieve the purpose, the invention provides the following technical scheme: a tunnel inverted arch lining trolley comprises a base, wherein two side columns are symmetrically and fixedly connected to the top of the base, the same top cover is fixedly connected to the tops of the two side columns, a mounting groove is formed in the bottom of the base, a power assembly is arranged in the mounting groove, a ball screw is connected to the power assembly in a transmission mode, two ends of the ball screw are respectively connected with the inner walls of two sides of the mounting groove in a rotating mode, two gears are symmetrically and fixedly sleeved on the ball screw, a connecting plate is connected in the mounting groove in a sliding mode, two toothed plates are symmetrically and fixedly connected to the connecting plate and are respectively meshed with the two gears, a driving wheel and a driven wheel are respectively arranged at the bottom of the connecting plate, a first motor is fixedly connected to the bottom of the connecting plate, a rotating wheel is fixedly sleeved on an output shaft of the first motor, the top symmetry fixedly connected with two support columns of base, the same construction platform of top fixedly connected with of two support columns, be equipped with the cat ladder on the construction platform.

The beneficial effect of this basic scheme lies in: through making the action wheel and following the driving wheel downstream and contact with ground, make the action wheel rotate by first motor again, and then can make the base remove, convenient and fast can protect the staff through the rail, has increased the security.

Further, power component includes the riser of fixed connection on the inner wall of mounting groove top, one side fixedly connected with electric telescopic handle of riser, threaded connection has screw nut on the ball, electric telescopic handle's one end and one side fixed connection of screw nut, beneficial effect: can make screw nut remove through electric telescopic handle to can make ball rotate, and then be convenient for the connecting plate drive action wheel and follow driving wheel downstream.

Further, two slipmats of bottom symmetry fixedly connected with of base, the bottom of two slipmats all is equipped with anti-skidding line, beneficial effect: when the anti-slip mat does not move, the anti-slip lines on the anti-slip mat can increase friction force, so that the position of the base is more stable.

Further, the top of the construction platform is fixedly connected with a fence, two protective doors are symmetrically arranged on the fence and are buckled with each other, a protective box is fixedly connected onto the fence, a fixed shaft is rotationally connected with the protective box, a protective belt roller is fixedly sleeved on the fixed shaft, a protective belt is wound on the protective belt roller, the top end of the protective belt extends to the upper part of the top of the protective box and is fixedly connected with a fixed ring, a second torsion spring is sleeved on the fixed shaft, two ends of the second torsion spring are respectively fixedly connected with one side of the protective belt roller and the inner wall of one side of the protective box, a limiting turntable is fixedly sleeved on the fixed shaft, a plurality of limiting holes are annularly formed in the outer side of the limiting turntable, a limiting shaft is connected onto the protective box through threads, the bottom end of the limiting shaft extends into the protective box and is rotatably connected with a transverse, one side of diaphragm and the opposite side inner wall sliding connection of guard box, the bottom fixedly connected with card post of diaphragm, card post and spacing looks adaptation, beneficial effect: through rail and guard gate, can protect constructor, be connected safety belt on one's body and the solid fixed ring on the guard band through constructor, then according to required length pulling guard band, can be connected constructor and rail through the guard band, even meet accident, constructor also can not drop ground, has increased the security.

Further, the post is strengthened to the equal fixedly connected with second in both sides of construction platform, and the one end that the post was kept away from each other is all with the inner wall fixed connection of top cap, two first enhancement posts of the equal symmetrical fixedly connected with in one side that two support columns were kept away from each other, and four first one ends of strengthening the post and keeping away from each other are respectively with two side posts one side fixed connection that are close to each other, beneficial effect: because set up first enhancement post and second and strengthen the post, can increase the joint strength of construction platform and two support columns and side column and top cap.

Further, be equipped with fixed cavity on the construction platform, fixedly connected with second motor on the top inner wall of fixed cavity, the fixed cavity internal rotation is connected with the connecting axle, equal fixed cover is equipped with the bevel gear on the output shaft of second motor and the connecting axle, and two bevel gears mesh mutually, fixed cover is equipped with the steel wire roller on the connecting axle, around being equipped with the steel wire on the steel wire roller, the bottom of steel wire extends to construction platform's top below and fixedly connected with couple, beneficial effect: can make the connecting axle rotate through the second motor, the connecting axle can make the steel wire roller tighten up the steel wire, and then can stimulate the couple rebound to can transport required material to construction platform on, convenient construction.

Further, equal sliding connection has the gag lever post on the both sides inner wall of mounting groove, and the one side fixed connection that one end that two gag lever posts are close to each other respectively keeps away from each other with two pinion racks, beneficial effect: the limiting rod can support the toothed plate, and the toothed plate can move more stably.

Further, the spout has all been seted up on the both sides inner wall of mounting groove, one side inner wall sliding connection, beneficial effect that the both sides of connecting plate were kept away from each other with two spouts respectively: the spout can make the connecting plate remove more smoothly.

Further, the spacing groove has been seted up on the top inner wall of mounting groove, screw nut's top and the top inner wall sliding connection of spacing groove, beneficial effect: the limiting groove can reduce friction force, so that the screw nut moves more smoothly.

Further, fixed cover is equipped with the rotor plate on the connecting axle, the cover is equipped with first torsion spring on the connecting axle, first torsion spring's both ends respectively with one side of rotor plate and one side inner wall fixed connection of fixed cavity, beneficial effect: the first torsion spring may provide a restoring power to the connection shaft.

The invention has the beneficial effects that:

1. according to the tunnel inverted arch lining trolley disclosed by the invention, the screw nut can be moved through the electric telescopic rod, so that the ball screw can rotate, the two toothed plates can drive the connecting plate to move downwards through the two gears, the driving wheel and the driven wheel can further move downwards and contact with the ground, the driving wheel can be rotated through the first motor, so that the base can be moved conveniently and quickly.

2. According to the tunnel inverted arch lining trolley disclosed by the invention, through the arrangement of the crawling ladder, workers can conveniently climb on a construction platform, the workers can enter the fence by opening the protection door, the workers can be protected by the fence, the safety is increased, the workers can enter the fence, the workers can be protected by the fence, the safety belt on the body of the workers is connected with the fixing ring on the protection belt by the workers, then the protection belt is pulled according to the required length, the workers can be connected with the fence by the protection belt, and even if an accident occurs, the workers cannot fall off the ground, so that the safety is increased.

3. According to the tunnel invert lining trolley disclosed by the invention, the second motor can be used for rotating the connecting shaft, the connecting shaft can be used for enabling the steel wire roller to tighten the steel wire, and further the hook can be pulled to move upwards, so that required materials can be transported to the construction platform, and the construction is convenient.

The movable base is reasonable in structure and convenient to operate, the driving wheel and the driven wheel move downwards and are in contact with the ground, the driving wheel is rotated by the first motor, the base can move, convenience and rapidness are achieved, workers can be protected through the fence, and safety is improved.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.

Drawings

For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:

fig. 1 is a schematic front view of a tunnel inverted arch lining trolley according to the present invention;

FIG. 2 is a cross-sectional view of a support in the inverted arch lining trolley for a tunnel according to the present invention;

FIG. 3 is a schematic structural view of a construction platform in the tunnel inverted arch lining trolley;

FIG. 4 is a schematic view of a connecting structure of a gear and a toothed plate in the tunnel inverted arch lining trolley;

FIG. 5 is a sectional view of a protective box in the inverted arch lining trolley for a tunnel according to the present invention;

FIG. 6 is an enlarged view of the portion A of FIG. 2 according to the present invention.

Reference numerals: the device comprises a base 1, side columns 2, a top cover 3, a mounting groove 4, a ball screw 5, a gear 6, a toothed plate 7, a connecting plate 8, a driving wheel 9, a driven wheel 10, a first motor 11, a rotating wheel 12, a supporting column 13, a construction platform 14, a ladder 15, a first reinforcing column 16, a second reinforcing column 17, a protective door 18, a fence 19, a non-slip mat 20, an electric telescopic rod 21, a screw nut 22, a limiting groove 23, a limiting rod 24, a sliding chute 25, a fixing chamber 26, a second motor 27, a connecting shaft 28, a steel wire roller 29, a steel wire 30, a hook 31, a rotating plate 32, a first torsion spring 33, a protective box 34, a fixing shaft 35, a protective belt roller 36, a protective belt 37, a second torsion spring 38, a limiting shaft 39 and a limiting turntable 40.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.

Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.

As shown in fig. 1-6, a tunnel invert lining trolley comprises a base 1, two side posts 2 are symmetrically and fixedly connected to the top of the base 1, the same top cover 3 is fixedly connected to the tops of the two side posts 2, an installation groove 4 is formed in the bottom of the base 1, a power assembly is arranged in the installation groove 4, a ball screw 5 is connected to the power assembly in a transmission manner, two ends of the ball screw 5 are respectively rotatably connected to the inner walls of two sides of the installation groove 4, two gears 6 are symmetrically and fixedly sleeved on the ball screw 5, a connecting plate 8 is slidably connected to the installation groove 4, two toothed plates 7 are symmetrically and fixedly connected to the connecting plate 8, the two toothed plates 7 are respectively engaged with the two gears 6, a driving wheel 9 and a driven wheel 10 are respectively arranged at the bottom of the connecting plate 8, a first motor 11 is fixedly connected to the bottom of the connecting plate 8, the rotating wheel 12 and the driving wheel 9 are in transmission connection with the same transmission belt, the top of the base 1 is symmetrically and fixedly connected with two supporting columns 13, the top ends of the two supporting columns 13 are fixedly connected with the same construction platform 14, and the construction platform 14 is provided with a ladder stand 15.

In this embodiment, the power assembly includes a vertical plate fixedly connected to the inner wall of the top of the mounting groove 4, one side of the vertical plate is fixedly connected with an electric telescopic rod 21, a screw nut 22 is connected to the ball screw 5 in a threaded manner, one end of the electric telescopic rod 21 is fixedly connected to one side of the screw nut 22, the screw nut 22 can be moved by the electric telescopic rod 21, so that the ball screw 5 can be rotated, and the connecting plate 8 can drive the driving wheel 9 and the driven wheel 10 to move downwards, the inner walls of the two sides of the mounting groove 4 are both slidably connected with a limiting rod 24, the ends of the two limiting rods 24 close to each other are respectively fixedly connected to the sides of the two toothed plates 7 far away from each other, the limiting rods 24 can support the toothed plates 7 and can make the toothed plates 7 move more stably, the inner walls of the two sides of the mounting groove 4 are both provided with sliding grooves 25, and the, spout 25 can make connecting plate 8 remove more smoothly, the spacing groove 23 has been seted up on the top inner wall of mounting groove 4, screw nut 22's top and the top inner wall sliding connection of spacing groove 23, the spacing groove 23 can reduce friction, it is more smooth-going to make screw nut 22 remove, two slipmats 20 of base 1's bottom symmetry fixedly connected with, the bottom of two slipmats 20 all is equipped with anti-skidding line, when unmovable, the antiskid line on the slipmat 20 can increase friction, make base 1's position more firm.

In this embodiment, a fence 19 is fixedly connected to the top of the construction platform 14, two guard doors 18 are symmetrically arranged on the fence 19, the two guard doors 18 are buckled, a guard box 34 is fixedly connected to the fence 19, a fixed shaft 35 is rotatably connected to the guard box 34, a guard belt roller 36 is fixedly sleeved on the fixed shaft 35, a guard belt 37 is wound on the guard belt roller 36, the top end of the guard belt 37 extends to the top of the guard box 34 and is fixedly connected with a fixed ring, a second torsion spring 38 is sleeved on the fixed shaft 35, two ends of the second torsion spring 38 are respectively fixedly connected with one side of the guard belt roller 36 and the inner wall of one side of the guard box 34, a limit turntable 40 is fixedly sleeved on the fixed shaft 35, a plurality of limit holes are annularly formed in the outer side of the limit turntable 40, a limit shaft 39 is threadedly connected to the guard box 34, the bottom end of the limit shaft 39 extends to the guard, one side of diaphragm and the opposite side inner wall sliding connection of guard box 34, the bottom fixedly connected with card post of diaphragm, card post and spacing hole looks adaptation, through rail and guard gate, can protect the constructor, be connected safety belt on one's body and the solid fixed ring on the guard band 37 through the constructor, then according to required length pulling guard band 37, can be connected constructor and rail 19 through guard band 37, even meet accident, the constructor also can not drop ground, the security has been increased.

The two sides of the construction platform 14 are fixedly connected with second reinforcing columns 17, the ends, far away from each other, of the two second reinforcing columns 17 are fixedly connected with the inner wall of the top cover 3, the sides, far away from each other, of the two supporting columns 13 are symmetrically and fixedly connected with the two first reinforcing columns 16, the ends, far away from each other, of the four first reinforcing columns 16 are fixedly connected with the side, close to each other, of the two side columns 2, due to the arrangement of the first reinforcing columns 16 and the second reinforcing columns 17, the connection strength of the construction platform 14, the two supporting columns 13, the side columns 2 and the top cover 3 can be increased, the construction platform 14 is provided with a fixing cavity 26, the inner wall at the top of the fixing cavity 26 is fixedly connected with a second motor 27, the fixing cavity 26 is rotatably connected with a connecting shaft 28, bevel gears are fixedly sleeved on output shafts of the second motor 27 and the connecting shaft 28 and are engaged with, around being equipped with steel wire 30 on the steel wire roller 29, the bottom of steel wire 30 extends to the top below and the fixedly connected with couple 31 of construction platform 14, can make connecting axle 28 rotate through second motor 27, connecting axle 28 can make steel wire roller 29 tighten up steel wire 30, and then can stimulate couple 31 rebound, thereby can transport required material to construction platform 14 on, convenient construction, fixed cover is equipped with rotor plate 32 on the connecting axle 28, the cover is equipped with first torsion spring 33 on the connecting axle 28, the both ends of first torsion spring 33 respectively with one side of rotor plate 32 and one side inner wall fixed connection of fixed cavity 26, first torsion spring 33 can provide reset power for connecting axle 28.

The using method of the tunnel inverted arch lining trolley comprises the steps that when the base 1 needs to move, the electric telescopic rod 21 is started, the electric telescopic rod 21 is contracted, the screw nut 22 can move, the screw nut 22 is in threaded connection with the ball screw 5, the screw nut 22 and the ball screw 5 are reversible in transmission, the ball screw 5 can rotate to enable the two gears 6 to rotate, the two toothed plates 7 can drive the connecting plate 8 to move downwards, the connecting plate 8 can enable the driving wheel 9 and the driven wheel 10 to move downwards and to be in contact with the ground, then the first motor 11 is started, the output shaft of the first motor 11 can enable the rotating wheel 12 to rotate, the rotating wheel 12 can enable the driving wheel 9 to rotate through the transmission belt, the base 1 can be moved through the driving wheel 9 and the driven wheel 10, the use method is convenient and fast, when the base 1 is moved to a proper position, the driving wheel 9 and the driven wheel 10, and two non-slip mats 20 can make the ground contact, and the bottom of non-slip mat 20 is equipped with anti-skidding line, can increase frictional force for the position of base 1 is more firm.

Because the first reinforcing column 16 and the second reinforcing column 17 are arranged, the connection strength of the construction platform 14 and the two supporting columns 13 with the side columns 2 and the top cover 3 can be increased, the climbing ladder 15 is arranged, workers can conveniently climb on the construction platform 14, the workers can enter the fence 19 by opening the protective door 18, after the workers enter the fence 19, the safety belt hooks on the workers are connected with the fixing rings on the protective belts 37, then the protective belts 37 can be pulled according to the required length, the protective belts 37 can be released through the protective belt rollers 36, the protective belt rollers 36 can drive the fixed shaft 35 to rotate, when the protective belts 37 reach the required length, the limiting shaft 39 rotates downwards, the transverse plate 39 can drive the clamping columns to move downwards, so that the clamping columns can be clamped with the corresponding limiting holes on the limiting rotary table 40 to limit the fixed shaft 35, make fixed axle 35 can not take place the unexpected removal, can be connected constructor and rail 19 like this, even the accident takes place, constructor also can not fall subaerial, the security has been increased, owing to set up couple 31, can hang required article on couple 31, through starting second motor 27, second motor 27's output shaft can make connecting axle 28 rotate through two bevel gears, connecting axle 28 can make steel wire roller 29 tighten up steel wire 30, and then can stimulate couple 31 rebound, thereby can transport required material to construction platform 14 on, convenient construction.

Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.

Claims

1. The tunnel inverted arch lining trolley comprises a base (1) and is characterized in that two side columns (2) are symmetrically and fixedly connected to the top of the base (1), the top of the two side columns (2) is fixedly connected with the same top cover (3), a mounting groove (4) is formed in the bottom of the base (1), a power assembly is arranged in the mounting groove (4), a ball screw (5) is connected to the power assembly in a transmission mode, the two ends of the ball screw (5) are rotatably connected with the inner walls of the two sides of the mounting groove (4) respectively, two gears (6) are symmetrically and fixedly sleeved on the ball screw (5), a connecting plate (8) is connected to the mounting groove (4) in a sliding mode, two toothed plates (7) are fixedly connected to the symmetry of the connecting plate (8), the two toothed plates (7) are meshed with the two gears (6) respectively, a driving wheel (9) and a driven wheel (10) are arranged at the bottom of, the bottom fixedly connected with first motor (11) of connecting plate (8), fixed cover is equipped with runner (12) on the output shaft of first motor (11), transmission connection has same driving belt on runner (12) and action wheel (9), two support columns (13) of the top symmetry fixedly connected with of base (1), the same construction platform (14) of the top fixedly connected with of two support columns (13), be equipped with cat ladder (15) on construction platform (14).

2. The tunnel invert lining trolley according to claim 1, characterized in that said power assembly comprises a vertical plate fixedly connected to the inner wall of the top of the installation groove (4), an electric telescopic rod (21) is fixedly connected to one side of the vertical plate, a screw nut (22) is screwed on the ball screw (5), and one end of the electric telescopic rod (21) is fixedly connected to one side of the screw nut (22).

3. The tunnel invert lining trolley according to claim 1, characterized in that two skidproof mats (20) are symmetrically and fixedly connected to the bottom of the base (1), and the bottoms of the two skidproof mats (20) are provided with skidproof lines.

4. The tunnel invert lining trolley according to claim 1, wherein the top of the construction platform (14) is fixedly connected with a fence (19), the fence (19) is symmetrically provided with two guard doors (18), the two guard doors (18) are buckled with each other, the fence (19) is fixedly connected with a guard box (34), the guard box (34) is rotatably connected with a fixed shaft (35), the fixed shaft (35) is fixedly sleeved with a guard belt roller (36), the guard belt roller (36) is wound with a guard belt (37), the top end of the guard belt (37) extends to the position above the top of the guard box (34) and is fixedly connected with a fixed ring, the fixed shaft (35) is sleeved with a second torsion spring (38), the two ends of the second torsion spring (38) are respectively fixedly connected with one side of the guard belt roller (36) and the inner wall of one side of the guard box (34), fixed cover is equipped with spacing carousel (40) on fixed axle (35), a plurality of spacing holes have been seted up to the outside annular of spacing carousel (40), threaded connection has spacing axle (39) on protective housing (34), the bottom of spacing axle (39) extends to in protective housing (34) and the swivelling joint has the diaphragm, the opposite side inner wall sliding connection of one side and protective housing (34) of diaphragm, the bottom fixedly connected with card post of diaphragm, card post and spacing hole looks adaptation.

5. A tunnel invert lining trolley as claimed in claim 1, characterized in that the construction platform (14) is fixedly connected with second reinforcing columns (17) at both sides, the ends of the two second reinforcing columns (17) far away from each other are fixedly connected with the inner wall of the top cover (3), the sides of the two supporting columns (13) far away from each other are symmetrically fixedly connected with two first reinforcing columns (16), and the ends of the four first reinforcing columns (16) far away from each other are fixedly connected with the sides of the two side columns (2) close to each other.

6. The tunnel invert lining trolley as claimed in claim 1, wherein a fixing chamber (26) is provided on the construction platform (14), a second motor (27) is fixedly connected to the inner wall of the top of the fixing chamber (26), a connecting shaft (28) is rotatably connected to the fixing chamber (26), bevel gears are fixedly sleeved on the output shaft of the second motor (27) and the connecting shaft (28), the two bevel gears are engaged with each other, a steel wire roller (29) is fixedly sleeved on the connecting shaft (28), a steel wire (30) is wound on the steel wire roller (29), and the bottom end of the steel wire (30) extends to the lower part of the top of the construction platform (14) and is fixedly connected with a hook (31).

7. The tunnel invert lining trolley according to claim 1, characterized in that the inner walls of both sides of the mounting groove (4) are slidably connected with limit rods (24), and the ends of the two limit rods (24) close to each other are fixedly connected with the sides of the two toothed plates (7) far away from each other.

8. The tunnel invert lining trolley according to claim 1, characterized in that the inner walls of both sides of the mounting groove (4) are provided with sliding grooves (25), and both sides of the connecting plate (8) are slidably connected with the inner walls of the sides of the two sliding grooves (25) away from each other.

9. The tunnel invert lining trolley according to claim 2, characterized in that the top inner wall of the mounting groove (4) is provided with a limiting groove (23), and the top of the screw nut (22) is connected with the top inner wall of the limiting groove (23) in a sliding manner.

10. The tunnel invert lining trolley as claimed in claim 6, wherein said connecting shaft (28) is fixedly sleeved with a rotating plate (32), said connecting shaft (28) is sleeved with a first torsion spring (33), two ends of said first torsion spring (33) are fixedly connected with one side of said rotating plate (32) and one side of the inner wall of said fixed chamber (26), respectively.