CN210888950U

CN210888950U - Tunnel construction trolley

Info

Publication number: CN210888950U
Application number: CN201921758765.6U
Authority: CN
Inventors: 谭常喜; 汪林; 周游; 张猛; 孙星亮; 张井承
Original assignee: Shijiazhuang Tiedao University; Third Engineering Co Ltd of China Railway 14th Bureau Co Ltd
Current assignee: Shijiazhuang Tiedao University; Third Engineering Co Ltd of China Railway 14th Bureau Co Ltd
Priority date: 2019-10-16
Filing date: 2019-10-16
Publication date: 2020-06-30
Anticipated expiration: 2029-10-16

Abstract

The utility model provides a tunnel construction trolley, belonging to the technical field of tunnel construction, comprising a portal frame, a first platform, a second platform, a lifting mechanism and a limiting mechanism; the first platform is rotatably arranged on the side part of the gantry and used for supporting constructors; the second platform is arranged on the lifting mechanism, can rotate, is positioned below the first platform and is used for supporting constructors; the lifting mechanism is arranged in the portal and used for adjusting the operation height of constructors; the limiting mechanism is arranged at the top of the portal frame and is used for being matched with the second platform for operation. The utility model provides a pair of tunnel construction platform truck, first platform and second platform all can rotate, to construction workman's construction height-adjustable, satisfy the construction requirement, but elevating system and stop gear height-adjusting construction satisfy constructor to the multi-functional demand of construction platform truck, make the construction platform truck can realize the not construction of co-altitude.

Description

Tunnel construction trolley

Technical Field

The utility model belongs to the technical field of the tunnel construction, more specifically say, relate to a tunnel construction platform truck.

Background

With the development of society and the progress of science and technology, in the aspect of tunnel construction, large-scale excavation machinery has already been put into use, and because the technical specification requirement to the tunnel is also higher and higher, need practice thrift construction cost again on the basis of requiring high-efficient construction quality, reduce the potential safety hazard. To being in the tunnel underground, owing to receive economic condition and technical level's restriction, large-scale machinery is difficult to carry out perfect excavation and protection to the tunnel, most tunnels still rely on artifical handheld pneumatic drill to carry out excavation work, but artifical excavation still will rely on the construction platform truck to carry out construction work, constructor is located the operation on the construction platform truck, because current construction platform truck is mostly frame attach structure, the form is relatively fixed, and the construction platform truck can not adjust the working height to constructor, when having higher or lower position to need the operation in so meetting in the construction, current platform truck function is more single, can not satisfy tunnel excavation construction demand.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a tunnel construction platform truck aims at solving current construction platform truck form ratio relatively fixed, the technical problem of function singleness.

In order to achieve the above object, the utility model adopts the following technical scheme: the tunnel construction trolley comprises a portal, a first platform, a second platform, a lifting mechanism and a limiting mechanism; the gantry is of a frame type structure; the first platform is arranged on the side part of the portal frame, is rotatably connected with the portal frame and is used for supporting constructors; the second platform is arranged at the upper end of the lifting mechanism, is rotatably connected with the lifting mechanism and is used for supporting constructors; the lifting mechanism is arranged in the door frame, is positioned below the first platform and is used for adjusting the operation height of constructors; the limiting mechanism is arranged at the top of the portal frame and used for being connected with the second platform in an articulated mode and limiting the second platform.

As another embodiment of the present application, the first platform includes a first rotating frame, a first folding frame, and a driving mechanism: the upper end face of the first rotating frame is flush with the upper end face of the portal frame, one end of the first rotating frame is hinged with the portal frame, the other end of the first rotating frame is a free end, and the first rotating frame is provided with a first limiting frame for limiting the first rotating frame to rotate clockwise; the upper end surface of the first folding frame is flush with the first rotating frame, one end of the first folding frame is hinged with the free end of the first rotating frame, the other end of the first folding frame is a free end, and the first folding frame is provided with a second limiting frame used for limiting the first folding frame to rotate clockwise; the driving mechanism is arranged on the door frame and used for driving the first rotating frame to rotate.

As another embodiment of the present application, the second platform includes a second rotating frame, a third rotating frame, and a second folding frame; the second rotating frame is arranged on the outer side of the portal, one end of the second rotating frame is rotatably connected with the upper end of the lifting mechanism, a third limiting frame used for limiting the second rotating frame to rotate clockwise is arranged on the second rotating frame, and the second rotating frame is limited by means of the tension of the limiting mechanism; the third rotating frame is arranged on the inner side of the portal frame, one end of the third rotating frame is rotatably connected with the upper end of the lifting mechanism, and the third rotating frame is limited by means of the tension of the limiting mechanism; the upper end surface of the second folding frame is flush with the second rotating frame, one end of the second folding frame is hinged with the outer end of the second rotating frame, the other end of the second folding frame is a free end, and a fourth limiting frame used for limiting the second folding frame to rotate clockwise is arranged on the second folding frame; the second platform is lifted by the aid of the lifting mechanism or limited by the aid of the limiting mechanism.

As another embodiment of the present application, the lifting mechanism includes a lifting beam and a first driver; the lifting beam is transversely arranged in the door frame, is in sliding connection with the door frame and is used for adjusting the operation height of constructors; one end of the first driver is fixedly arranged on the portal frame, and the pushing end of the first driver is fixedly connected with the lifting beam and used for pushing the lifting beam to lift along the portal frame.

As another embodiment of the present application, the limiting mechanism comprises a winch and a second driver; the winch is fixedly arranged at the top of the portal frame, a steel wire rope is wound on the winch, and a hook is arranged at the end part of the steel wire rope; the second driver is arranged at the top of the gantry and used for driving the winch to rotate; the hook is connected with the end of the second platform in a hanging mode, the second platform is limited by means of the tensile force of the steel wire rope, and the rotating angle of the second platform is adjusted by means of the second driver.

As another embodiment of this application, all be equipped with protective structure on first platform or the second platform, protective structure is used for fastening constructor.

As another embodiment of the present application, the first platform or the second platform are two sets and are respectively disposed on two opposite side surfaces of the gantry.

As another embodiment of the present application, the portal frame includes a top beam, a bottom beam, and a pillar; the top beams are multiple and can form a rectangular frame; the bottom beams are arranged in parallel and at intervals; the stand is many, and the equipartition is located the back timber with between the floorbar and mutual fixed connection for the bearing back timber.

As another embodiment of the application, the side part of the portal frame is fixedly provided with a stair leading to the top part of the portal frame.

As another embodiment of this application, the portal is inside to be equipped with a plurality of strengthening ribs, the bottom of portal is equipped with a plurality of walking wheels.

The utility model provides a pair of tunnel construction platform truck's beneficial effect lies in: compared with the prior art, the utility model relates to a tunnel construction platform truck, constructor stands and carries out the operation to the tunnel on the construction platform truck, but through setting up first platform and the second platform of adjustable construction height on the construction platform truck, when constructor's construction height need be adjusted, constructor just can stand and carry out the operation on first platform or second platform, satisfy the construction demand, in addition through the elevating system who sets up, can adjust constructor's operation height and satisfy the multi-functional demand of constructor to the construction platform truck, can be spacing or fix a position the second platform through stop gear, it is more fixed to have solved current construction platform truck form, the technical problem of function singleness, have the multi-functional demand that satisfies the constructor to the construction platform truck, make the construction platform truck can realize the technological effect of the construction demand of co-altitude not.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a tunnel construction trolley provided in an embodiment of the present invention;

fig. 2 is a side view of a tunnel construction trolley provided by an embodiment of the present invention;

fig. 3 is a schematic view of a usage status of a tunnel construction trolley provided by an embodiment of the present invention;

FIG. 4 is a front view of a gantry structure of the tunnel construction trolley shown in FIG. 1;

FIG. 5 is a side view of a gantry structure of one of the tunnel construction trolleys shown in FIG. 1;

fig. 6 is a front view of a lifting beam of a lifting mechanism of a tunnel construction trolley provided by an embodiment of the present invention;

fig. 7 is a top view of a lifting beam of a lifting mechanism of a tunnel construction trolley provided by an embodiment of the present invention;

fig. 8 is a side view of a lifting beam of a lifting mechanism of a tunnel construction trolley provided by an embodiment of the present invention;

fig. 9 is a front view of a first rotating frame of a first platform of a tunnel construction trolley provided by an embodiment of the present invention;

fig. 10 is a top view of a first rotating frame of a first platform of a tunnel construction trolley according to an embodiment of the present invention;

fig. 11 is a schematic view of the lifting mechanism and the second platform of the tunnel construction trolley provided in the embodiment of the present invention.

In the figure: 1. a gantry; 11. a top beam; 12. a bottom beam; 13. a column; 2. a first platform; 21. a first rotating frame; 22. a first folding frame; 23. a drive mechanism; 24. a first limit bracket; 25. a second limiting frame; 3. a second platform; 31. a second rotating frame; 32. a second folding frame; 33. a third limiting frame; 34. a fourth limiting frame; 35. a third rotating frame; 4. a lifting mechanism; 41. a lifting beam; 42. a first driver; 5. a limiting mechanism; 51. a winch; 52. a second driver; 6. a staircase; 7. reinforcing ribs; 8. a traveling wheel; 9. a steel bar protective net.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 and 11, a tunnel construction trolley according to the present invention will be described. The tunnel construction trolley comprises a portal 1, a first platform 2, a second platform 3, a lifting mechanism 4 and a limiting mechanism 5; the gantry 1 is of a frame type structure; the first platform 2 is arranged on the side part of the gantry 1, is rotatably connected with the gantry 1 and is used for supporting a constructor to operate; the second platform 3 is arranged at the upper end of the lifting mechanism 4, is rotatably connected with the lifting mechanism 4 and is used for bearing the operation of constructors; the lifting mechanism 4 is positioned below the first platform 2, and the lifting mechanism 4 is arranged in the portal 1 and used for adjusting the operation height of constructors; the limiting mechanism 5 is arranged at the top of the gantry 1 and used for being connected with the second platform 3 in an articulated mode and limiting the second platform 3 to rotate.

Compared with the prior art, the utility model provides a tunnel construction trolley, constructors stand on the construction trolley to operate the tunnel, through the first platform 2 and the second platform 3 which are arranged on the construction trolley and can adjust the construction height, when the construction height of the constructor needs to be adjusted, the constructor can stand on the first platform 2 or the second platform 3 to operate, the construction requirement is met, in addition, the lifting mechanism 4 can adjust the operation height of the constructor and meet the multifunctional requirement of the constructor on the construction trolley, can be spacing or the location with second platform 3 through stop gear 5, it is relatively fixed to have solved current construction trolley form, and the technical problem of function singleness has the multi-functional demand that satisfies the constructor to the construction trolley, makes the construction trolley can realize the not technological effect of the construction demand of co-altitude.

In a specific embodiment, the gantry 1 is a frame structure formed by fixedly connecting a plurality of beam bodies, the first platform 2 and the second platform 3 can both realize the function of rotating with the gantry 1, and protective structures for preventing constructors from slipping or falling off and potential safety hazards are arranged on the first platform 2 and the second platform 3. Protective structure can be for setting up skid resistant course, slipmat, the safety belt on first platform 2 or second platform 3 and be used for the fixed ligature area etc. of fixed constructor foot, when constructor was located operation on first platform 2 or second platform 3, the safety protection subassembly can obtain the powerful guarantee to constructor's safety.

As a specific embodiment of the tunnel construction trolley provided by the present invention, please refer to fig. 1-3 and fig. 9-10, the first platform 2 includes a first rotating frame 21, a first folding frame 22 and a driving mechanism 23: the upper end face of the first rotating frame 21 is flush with the upper end face of the portal 1, one end of the first rotating frame is hinged with the portal 1, the other end of the first rotating frame is a free end, and a first limiting frame 24 used for limiting the first rotating frame 21 to rotate clockwise is arranged on the first rotating frame 21; the upper end surface of the first folding frame 22 is flush with the first rotating frame 21, one end of the first folding frame is hinged with the free end of the first rotating frame 21, the other end of the first folding frame is a free end, and a second limiting frame 25 used for limiting the clockwise rotation of the first folding frame 22 is arranged on the first folding frame 22; the driving mechanism 23 is disposed on the gantry 1 and is used for driving the first rotating frame 21 to rotate. The first rotating frame 21 is a rotating plate, one end of the first rotating frame is hinged to the side portion of the door frame 1, the other end of the first rotating frame is a free end, the first limiting frame 24 at the bottom of the first rotating frame 21 can limit clockwise rotation of the first rotating frame 21, it can be understood that the first limiting frame 24 can limit a rotation angle between the first platform 2 and the door frame 1, and the lowest limiting degree of the first limiting frame 24 is achieved when the first rotating frame 21 is flush with the upper end face of the door frame 1. First folding frame 22 and first revolving frame 21 articulate each other, because first folding frame 22 and first revolving frame 21 all have certain thickness, and the pin joint of first folding frame 22 and first revolving frame 21 is located both adjacent upper corner positions, then can set up the spacing frame 25 of second in corner position down, and spacing frame 25 of second can be understood as a set of baffle, and the minimum is that first folding frame 22 and first revolving frame 21 keep the parallel and level. Through the drive of actuating mechanism 23, can push up first revolving rack 21 and rotate around the pin joint, just so can be when the construction, when the construction height need be adjusted, constructor stands on first revolving rack 21 or first folding frame 22, through the drive of actuating mechanism 23, makes first revolving rack 21 and first folding frame 22 take place to rotate, lifts constructor and goes up and down a take the altitude. The first folding frame 22 can rotate around the hinge point, the upper end surface of the first folding frame 22 is in an unfolded state when being flush with the first rotating frame 21, and the first folding frame 22 is folded upwards, namely, the upper end surface of the first folding frame 22 is in a folded state when being overlapped with the upper end surface of the first rotating frame 21; the first folding frame 22 can save space after being folded towards the upper end face of the first rotating frame 21; after being unfolded, the utility model can be used by workers standing.

In an embodiment, the constructor stands on the first rotating frame 21, and since the first folding frame 22 rotates on the basis of the first rotating frame 21, when the first rotating frame 21 is rotated, the first folding frame 22 also rotates, which meets the requirement of height adjustment for construction. In addition, when the construction height is high, a constructor can stand on the first folding frame 22 to perform operation, and the construction requirement can be met by adjusting the first folding frame through the driving mechanism 23. When the first folding frame 22 is not used, the first folding frame 22 can be folded toward the upper end of the first rotating frame 21, so that the construction space can be saved, and the space utilization rate of the tunnel can be increased.

In one embodiment, the driving mechanism 23 is a telescopic cylinder for driving the first rotating frame 21 to rotate, one end of the telescopic cylinder is hinged to the side portion of the gantry 1, and the other end of the telescopic cylinder is hinged to the bottom portion of the first rotating frame 21, and the telescopic cylinder is controlled by a control system, which is operable to control the telescopic length of the telescopic cylinder, and thus the rotating angle of the first rotating frame 21.

In an embodiment, the first rotating frame 21 and the first folding frame 22 of the first platform 2 are welded together to form a frame structure, and a steel bar protection net 9 is fixed on the frame structure, wherein the steel bar protection net 9 can effectively protect the safety of the working platform and the constructors under the gantry 1 from being damaged by rocks falling from the surrounding rock surface which is not supported.

As a specific embodiment of the tunnel construction trolley provided by the present invention, please refer to fig. 1 to 3 and 11, the second platform 3 includes a second rotating frame 31, a third rotating frame 35 and a second folding frame 32; the second rotating frame 31 is arranged on the outer side of the portal 1, one end of the second rotating frame 31 is rotatably connected with the upper end of the lifting mechanism 4, a third limiting frame 33 used for limiting the clockwise rotation of the second rotating frame 31 is arranged on the second rotating frame 31, and the second rotating frame 31 is limited by means of the tension of the limiting mechanism 5; the third rotating frame 35 is arranged on the inner side of the portal 1, one end of the third rotating frame is rotatably connected with the upper end of the lifting mechanism 4, and the third rotating frame 35 is limited by means of the tension of the limiting mechanism 5; the upper end surface of the second folding frame 32 is flush with the second rotating frame 31, one end of the second folding frame is hinged with the outer end of the second rotating frame 31, the other end of the second folding frame is a free end, a fourth limiting frame 34 used for limiting the clockwise rotation of the second folding frame 32 is arranged on the second folding frame 32, and the second platform 3 is lifted by means of the lifting mechanism 4 or limited by means of the limiting mechanism 5. Second platform 3 is located the below of first platform 2, and when the construction height was low, constructor can stand and carry out the operation on second platform 3, when the height of second platform 3 can not satisfy the construction requirement, then second platform 3 can adjust the construction height.

The second platform 3 can also move up and down by means of the lifting mechanism 4, after the end part of the second platform 3 is articulated with the limiting mechanism 5, the rotation angle (or construction height) of the second platform 3 can be adjusted, and after the second platform 3 is adjusted, the second platform 3 can be limited by the limiting mechanism 5. The second platform 3 can keep horizontal by means of the adjustment of the lifting mechanism 4 and the limiting mechanism 5, so that the operation of constructors is facilitated.

When the height of the construction trolley can not meet the construction requirement, the second platform 3 can be adjusted to a proper position (or height) through the driving of the lifting mechanism 4 and the limiting mechanism 5 so as to meet the construction requirement, and the lengths of the second rotating frame 31 and the third rotating frame 35 are both greater than that of the first rotating frame 21; specifically, the end portions of the second rotating frame 31 and the third rotating frame 35 are rotatably connected or hinged with the lifting mechanism 4, the structure of the third limiting frame 33 is the same as that of the first limiting frame 24, and the structure of the fourth limiting frame 34 is the same as that of the second limiting frame 25.

In one embodiment, the second rotating frame 31 and the third rotating frame 35 are respectively connected to the elevating mechanism 4 by hinges. When not using second folding frame 32, can fold second folding frame 32 to the up end of second rotating turret 31, after second folding frame 32 and second rotating turret 31 are folded, can save the occupation space of construction platform truck, increase the construction space in tunnel, the folding operation of second folding frame 32 is very convenient, it can to expand it when using.

In an embodiment, the second rotating frame 31 and the second folding frame 32 of the second platform 3 are welded together to form a frame structure, and a steel bar protection net 9 is fixed on the frame structure, and the steel bar protection net 9 can effectively protect the safety of the working platform and the constructors under the gantry 1 from being damaged by rocks falling from the surrounding rock surface which is not supported.

As a specific embodiment of the utility model provides a pair of tunnel construction platform truck, please refer to fig. 1 to 3, all be equipped with protective structure on first platform 2 or the second platform 3, protective structure is used for fastening constructor. Wherein the protective structure is a steel bar protective net 9.

Protective structure can be skid resistant course, slipmat, the safety belt of setting on first platform 2 or second platform 3 and be used for the fixed ligature area etc. of fixed constructor foot, and when constructor was located operation on first platform 2 or second platform 3, safety protection subassembly can obtain the powerful guarantee to constructor's safety.

As a specific embodiment of the tunnel construction trolley provided by the present invention, please refer to fig. 1 to 3, fig. 6 to 8, and fig. 11, the lifting mechanism 4 includes a lifting beam 41 and a first driver 42; the lifting beam 41 is transversely arranged in the portal frame 1 and is in sliding connection with the portal frame 1, and the lifting beam 41 is used for adjusting the operation height of a constructor; one end of the first driver 42 is fixedly arranged on the gantry 1, and the pushing top end of the first driver 42 is fixedly connected with the lifting beam 41 and used for pushing the lifting beam 41 to slide up and down along the gantry 1. Because the two ends of the lifting beam 41 are of groove structures, the lifting beam can be just connected with the portal 1 in a clamping or embedded manner, so that the lifting beam 41 cannot slip off or the like when sliding on the portal 1, and the use cannot be influenced. The end of the lifting beam 41 is equivalent to a sliding chute, the gantry 1 is equivalent to a sliding rail, and the lifting beam 41 can slide up and down along the gantry 1. The second rotating frame 31 and the third rotating frame 35 are respectively hinged on both sides of the lifting beam 41.

In a specific embodiment, the first actuator 42 includes two or more telescopic cylinders, and can drive the lifting beam 41 to move up and down, the lifting beam 41 can drive the second platform 3 to move up and down, if the construction personnel can stand on the second platform 3 to perform operation when the height to be constructed is low, the height of the lifting beam 41 or the second platform 3 can be adjusted by the first actuator 42 so as to meet the construction requirement.

As a specific embodiment of the tunnel construction trolley provided by the present invention, please refer to fig. 1 to 3, the limiting mechanism 5 includes a winch 51 and a second driver 52; the winch 51 is fixedly arranged at the top of the portal 1, a steel wire rope is wound on the winch 51, and a hook is arranged at the end part of the steel wire rope; the second driver 52 is arranged at the top of the gantry 1 and is used for driving the winch 51 to rotate; the hook is connected with the end part of the second platform 3 in a hanging mode, the second platform 3 is limited by means of the tensile force of the steel wire rope, and the rotating angle of the second platform 3 is adjusted by means of the second driver 52. After the hook is hung on the end part of the second platform 3, the pulling force of the steel wire rope can maintain the balance of the second platform 3, and the rotating angle of the second platform 3 can be adjusted through the stretched or retracted steel wire rope, so that the construction height can be adjusted. The steel wire rope can be respectively connected with the second rotating frame 31 and the third rotating frame 35 in a hanging mode, and the upper end faces of the second rotating frame 31 and the third rotating frame 35 are kept in a horizontal state through cooperation with the lifting mechanism 4, so that construction of constructors is facilitated.

The both ends of capstan winch 51 are rotated and are connected at the top of portal 1, and the wire rope that has enough length is coiled on capstan winch 51, is fixed with the couple on wire rope's the end that stretches out, and this couple can articulate the tip of second platform 3, articulates the back and through adjusting wire rope's the length that stretches out, can adjust the rotation angle of second platform 3 to alright in order to satisfy the construction demand.

The first driver 42 and the second driver 52 are controlled by the control system, and the actions of the lifting mechanism 4 and the limiting mechanism 5 can be respectively met by controlling and controlling the control system, so that the construction requirements can be met.

As a specific embodiment of the tunnel construction trolley provided by the present invention, please refer to fig. 1 to 3, the first platform 2 or the second platform 3 are two sets and are respectively disposed on the two opposite side surfaces of the gantry 1. For the convenience of construction, set up two sets of first platforms 2 or two sets of second platform 3 in the both sides of portal 1 relatively, and set up with the central line symmetry of portal 1, just so can satisfy the construction requirement, the multiunit constructor of being convenient for carries out the operation simultaneously to improve tunnel construction operating efficiency.

As a specific embodiment of the tunnel construction trolley provided by the present invention, please refer to fig. 1 to 5, the gantry 1 includes a top beam 11, a bottom beam 12 and a vertical column 13; the top beam 11 is provided with a plurality of beams which can form a rectangular frame; the bottom beams 12 are arranged in parallel and at intervals; the upright posts 13 are uniformly distributed between the top beam 11 and the bottom beam 12 and fixedly connected with each other for supporting the top beam 11. The portal frame 1 is of a frame structure, the top beam 11 enables the top to be combined into a rectangular frame structure, and the bottom beam 12 is fixedly connected with the upright posts 13 and then fixedly connected with the top beam 11, so that a portal frame structure is formed.

As a specific embodiment of the tunnel construction trolley provided by the present invention, please refer to fig. 1 to 3, the lateral part of the gantry 1 is fixedly provided with a stair 6 leading to the top of the gantry 1. Stair 6 is the subassembly that leads to portal 1 top, and constructor can rise to the top of portal 1 through climbing stair 6 and carry out the operation, satisfies the construction requirement.

As a specific embodiment of the utility model provides a pair of tunnel construction platform truck please refer to fig. 1 to 5, and portal 1 is inside to be equipped with a plurality of strengthening ribs 7, and portal 1's bottom is equipped with a plurality of walking wheels 8.

In a specific embodiment, the reinforcing ribs 7 can enhance or increase the stability of the portal 1, and since the height of the portal 1 is high, when the reinforcing ribs 7 are not used, the portal 1 becomes softer, shaking and other phenomena can be generated, and in order to avoid dangerous factors, a plurality of reinforcing ribs 7 are arranged on the portal 1, so that the overall stability of the portal 1 can be enhanced. The walking wheel 8 is four, all locates four angle departments in the bottom of portal 1, and walking wheel 8 can support portal 1 and remove. Wherein still be equipped with brake mechanism on each walking wheel 8, when portal 1 moves the place of treating the construction in the tunnel, can lock each walking wheel 8 respectively through brake mechanism, guarantee portal 1's stability and construction requirement.

Specifically, still be equipped with construction lighting assembly in portal 1's inside, construction lighting assembly can provide the illumination for the construction in the tunnel, and construction lighting assembly can be light, searchlight or LED lamp etc..

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A tunnel construction trolley, comprising:

a gantry;

the first platform is rotatably arranged on the side part of the gantry and used for supporting constructors;

the lifting mechanism is arranged in the gantry, is positioned below the first platform and is used for adjusting the operation height of constructors;

the second platform is rotatably arranged at the upper end of the lifting mechanism and used for supporting constructors; and

and the limiting mechanism is arranged at the top of the portal frame and used for being articulated with the second platform and limiting the second platform.

2. A tunnel construction trolley according to claim 1 wherein the first platform comprises:

the upper end face of the first rotating frame is flush with the upper end face of the portal frame, one end of the first rotating frame is hinged with the portal frame, the other end of the first rotating frame is a free end, and a first limiting frame used for limiting the first rotating frame to rotate clockwise is arranged on the first rotating frame;

the upper end surface of the first folding frame is flush with the first rotating frame, one end of the first folding frame is hinged with the free end of the first rotating frame, the other end of the first folding frame is a free end, and the first folding frame is provided with a second limiting frame used for limiting the first folding frame to rotate clockwise; and

and the driving mechanism is arranged on the portal and used for driving the first rotating frame to rotate.

3. A tunnel construction trolley according to claim 1 wherein the second platform comprises:

the second rotating frame is arranged on the outer side of the portal, one end of the second rotating frame is rotatably connected with the upper end of the lifting mechanism, a third limiting frame used for limiting the second rotating frame to rotate clockwise is arranged on the second rotating frame, and the second rotating frame is limited by means of the tension of the limiting mechanism;

the third rotating frame is arranged on the inner side of the portal, one end of the third rotating frame is rotatably connected with the upper end of the lifting mechanism, and the third rotating frame is limited by means of the tension of the limiting mechanism; and

and the upper end surface of the second folding frame is parallel and level with the second rotating frame, one end of the second folding frame is hinged with the outer end of the second rotating frame, the other end of the second folding frame is a free end, and a fourth limiting frame used for limiting the second folding frame to rotate clockwise is arranged on the second folding frame.

4. The tunnel construction trolley according to claim 1, wherein the elevating mechanism comprises:

the lifting beam is transversely arranged in the portal frame, is in sliding connection with the portal frame and is used for adjusting the operation height of constructors; and

and one end of the first driver is fixedly arranged on the portal frame, and the ejection end of the first driver is fixedly connected with the lifting beam and used for ejecting the lifting beam to lift along the portal frame.

5. The tunnel construction trolley according to claim 1, wherein the limit mechanism comprises:

the winch is fixedly arranged at the top of the portal frame, a steel wire rope is wound on the winch, and a hook is arranged at the end part of the steel wire rope; and

the second driver is arranged at the top of the gantry and used for driving the winch to rotate; the hook is connected with the end of the second platform in a hanging mode, the second platform is limited by means of the tensile force of the steel wire rope, and the rotating angle of the second platform is adjusted by means of the second driver.

6. A tunnel construction trolley according to claim 1, characterised in that a protective structure is provided on either the first platform or the second platform, which protective structure is used to secure the constructors.

7. A tunnel construction trolley according to claim 1 wherein there are two sets of first platforms or second platforms, one on each of the opposite sides of the gantry.

8. The tunnel construction trolley of claim 1 wherein the portal comprises:

the top beams are multiple and can form a rectangular frame;

the bottom beams are arranged in parallel at intervals; and

the stand is many, and the equipartition is located the back timber with between the floorbar and mutual fixed connection for the bearing back timber.

9. A tunnel construction trolley according to claim 1, wherein the sides of the portal are provided with fixed stairways leading to the top of the portal.

10. The tunnel construction trolley of claim 1, wherein the portal is internally provided with a plurality of reinforcing ribs, and the bottom of the portal is provided with a plurality of road wheels.