CN219081605U - Movable bent - Google Patents

Abstract

The utility model provides a movable bent, which comprises a bent main body, a moving mechanism, a traction mechanism and a steel walking platform; the bottom of the bent main body forms a door opening arranged along the extending direction of the tunnel; the moving mechanism is arranged at the bottom of the bent main body; the traction mechanism is arranged at the front end of the moving mechanism and is used for guiding the moving mechanism to move forwards; the steel walking platform is laid at the bottom of the tunnel, and the moving mechanism is movably arranged above the steel walking platform. Compared with the prior art, the movable bent provided by the utility model has the advantages that the steel walking platform is arranged at the bottom of the tunnel, the moving mechanism is arranged below the bent main body, the bent main body is driven to move by the moving mechanism, the integral movement of the bent main body is realized, the moving mechanism moves on the steel walking platform, and the moving stability of the bent main body is improved.

Description

Movable bent

Technical Field

The utility model belongs to the technical field of tunnel construction, and particularly relates to a movable bent.

Background

The cast-in-situ concrete beam of the tunnel (tunnel) body secondary lining top arch concrete and the bridge generally adopts a full-hall steel pipe bent formwork supporting scheme, and the scheme mainly utilizes common steel pipes to be mutually connected through fasteners to form a grid full-hall steel pipe bent support, and concrete is poured after the bent supports the formwork. The steel pipe bent is generally erected manually one by one.

After the concrete pouring of each bin in the prior art is completed, the steel pipe bent frame needs to be detached, the bent frame is carried to the next bin and then reinstalled, and the construction is sequentially and circularly carried out. In the construction mode, the steel pipe bent is required to be repeatedly assembled and disassembled, a large amount of materials are conveyed and lifted, a large amount of labor is consumed, and the construction period is prolonged; the repeated disassembly and assembly of materials causes material loss and damage, and causes material waste; the bent reinforcement workload is large, the safety risk is large, and the management is inconvenient.

Disclosure of Invention

The embodiment of the utility model provides a movable bent, which aims to solve the problems that a large amount of labor is consumed, the construction period is long, the material is consumed due to the assembly and disassembly, and the cost is increased in the prior art because the bent is required to be repeatedly assembled and disassembled when the bent position is replaced.

In order to achieve the above purpose, the utility model adopts the following technical scheme: provided is a movable bent including:

the bent main body is provided with a door opening arranged along the extending direction of the tunnel at the bottom;

the moving mechanism is arranged at the bottom of the bent main body;

the traction mechanism is arranged at the front end of the moving mechanism and is used for guiding the moving mechanism to move forwards; and

the steel walking platform is paved at the bottom of the tunnel, and the moving mechanism is movably arranged above the steel walking platform.

In one possible implementation manner, the moving mechanisms are provided with two groups, and the two groups of moving mechanisms are respectively located at two sides of the door opening, and the moving mechanisms include:

the bearing plate is arranged at the bottom of the bent main body; and

the roller is arranged below the bearing plate and is in rolling fit with the steel walking platform.

In a possible implementation manner, the bent main body comprises a plurality of vertical rod assemblies and a plurality of cross rod assemblies, the vertical rod assemblies comprise a plurality of vertical rods sequentially connected from top to bottom, the cross rod assemblies comprise a plurality of horizontal rods sequentially connected along a preset horizontal direction, the vertical rods are parallel to each other, the horizontal rods are parallel to each other, the adjacent vertical rods and the horizontal rods are vertically crossed and are fixedly connected at the right-angle point through butt joint fasteners, and the bent main body further comprises cover plates which are arranged at the top of the vertical rods at intervals;

and a reinforcing diagonal rod is arranged between two adjacent vertical rods in the horizontal direction and close to the door opening.

In one possible implementation manner, a scissor brace is arranged on the outer side of the bent main body, the scissor brace comprises a plurality of groups of inclined stay bars which are arranged in a crossing manner, and two ends of the inclined stay bars are respectively hinged with the horizontal bars.

In one possible implementation, the cover plate is provided with a railing and a foot blocking plate, and a safety net is arranged outside the railing.

In one possible implementation manner, the movable bent further includes a ladder, where the ladder is fixed on a side surface of the bent main body, and the ladder is connected with the moving mechanism and the cover plate located below, and is also connected with an adjacent cover plate.

In one possible implementation manner, the steel walking platform comprises a plurality of supporting plates which are sequentially connected along the extending direction of the tunnel, the supporting plates are laid at the bottom of the tunnel, and the moving mechanism is movably arranged on the supporting plates.

In one possible implementation, the traction mechanism includes:

the movable pile is detachably arranged on the steel walking platform and is positioned in front of the bent main body; and

and the two ends of the traction guide chain are respectively connected with the movable pile and the movable mechanism.

In one possible implementation manner, a plurality of support rods are arranged on the steel walking platform along the laying path of the steel walking platform, each support rod is vertically arranged, and the support rods correspond to the inner side of the door opening;

and one side, close to the door opening, of the moving mechanism is provided with a locking mechanism, one end of the locking mechanism is hinged with the moving mechanism, and the other end of the locking mechanism is detachably connected with the supporting rod.

In one possible implementation manner, the locking mechanism comprises a telescopic oil cylinder, a cylinder body of the telescopic oil cylinder is rotatably arranged on one side, facing the door opening, of the moving mechanism, and the telescopic direction of the telescopic oil cylinder is perpendicular to a rod body of the supporting rod;

the telescopic oil cylinder is characterized in that a connecting piece is correspondingly arranged on the supporting rod, the connecting piece is rotationally arranged on the supporting rod, the rotating shaft of the connecting piece is parallel to the rod body of the supporting rod, and the telescopic end of the telescopic oil cylinder is detachably connected with the connecting piece.

Compared with the prior art, the movable bent provided by the utility model has the advantages that the steel walking platform is arranged at the bottom of the tunnel, the moving mechanism is arranged below the bent main body, the bent main body is driven to move by the moving mechanism, the integral movement of the bent main body is realized, the moving mechanism moves on the steel walking platform, and the moving stability of the bent main body is improved. Compared with the prior art, the repeated assembly and disassembly in the steel pipe bent construction process is reduced, the construction safety is ensured, most common materials and small-sized equipment can be placed on the bent main body, the repeated transportation of the materials is greatly reduced, repeated assembly and disassembly is avoided, a large amount of labor force, materials and construction period are saved, the construction cost is effectively reduced, and the construction progress is accelerated.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.

Fig. 1 is a schematic front view of a movable bent according to an embodiment of the present utility model;

FIG. 2 is a side view of a bent body according to an embodiment of the present utility model;

FIG. 3 is a schematic front view of a moving mechanism according to an embodiment of the present utility model;

FIG. 4 is a schematic side view of a traction mechanism according to an embodiment of the present utility model;

FIG. 5 is a schematic view illustrating the assembly of a pole and an auxiliary pole according to a first embodiment of the present utility model;

FIG. 6 is a schematic structural diagram of a steel platform according to an embodiment of the present utility model;

FIG. 7 is an enlarged view of a portion of a bent main body according to an embodiment of the present utility model;

fig. 8 is a schematic front view of a movable bent according to a second embodiment of the present utility model;

fig. 9 is a schematic top view of a locking mechanism according to a second embodiment of the present utility model.

Reference numerals illustrate:

1. a bent main body; 10. a door opening; 11. a pole assembly; 111. a vertical rod; 112. an auxiliary rod; 12. a cross bar assembly; 121. a horizontal bar; 13. a cover plate; 14. a scissors support; 15. railing; 16. a ladder stand; 17. reinforcing the diagonal rods;

2. a moving mechanism; 21. a bearing plate; 211. a rod; 22. a roller;

3. a traction mechanism; 31. moving the pile; 32. traction guide chain;

4. a steel walking platform; 41. a support plate; 42. a support rod; 421. a connecting piece;

5. a locking mechanism; 51. and (5) a telescopic oil cylinder.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

It should be noted that the terms "length," "width," "height," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," "tail," and the like indicate an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the utility model.

It should also be noted that unless explicitly stated or limited otherwise, terms such as "mounted," "connected," "secured," "disposed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. Furthermore, the meaning of "a plurality of", "a number" is two or more, unless explicitly defined otherwise.

Referring to fig. 1 to 9, the movable bent provided by the present utility model will now be described. The movable bent comprises a bent main body 1, a moving mechanism 2, a traction mechanism 3 and a steel walking platform 4. A door opening 10 arranged along the extending direction of the tunnel is formed at the bottom of the bent main body 1; the moving mechanism 2 is arranged at the bottom of the bent main body 1; the traction mechanism 3 is arranged at the front end of the moving mechanism 2, and the traction mechanism 3 is used for guiding the moving mechanism 2 to move forwards; the steel walking platform 4 is paved at the bottom of the tunnel, and the moving mechanism 2 is movably arranged above the steel walking platform 4.

It should be noted that, the door opening 10 penetrates through the front end and the rear end of the bent main body 1, and can be used as a traffic channel to meet the traffic of engineering equipment, solve the traffic problem after the bent main body 1 is constructed, ensure that the bent main body 1 can work simultaneously front and rear, avoid construction interference, and facilitate construction and traffic.

Compared with the prior art, the movable bent provided by the embodiment is provided with the steel walking platform 4 at the bottom of the tunnel, the moving mechanism 2 is arranged below the bent main body 1, the bent main body 1 is driven to move through the moving mechanism 2, the integral movement of the bent main body 1 is realized, the moving mechanism 2 moves on the steel walking platform 4, and the moving stability of the bent main body 1 is improved. Compared with the prior art, the repeated assembly and disassembly in the steel pipe bent construction process is reduced, the construction safety is ensured, most common materials and small-sized equipment can be placed on the bent main body 1, the repeated transportation of the materials is greatly reduced, repeated assembly and disassembly is avoided, a large amount of labor force, materials and construction period are saved, the construction cost is effectively reduced, and the construction progress is accelerated.

In some embodiments, referring to fig. 1 and 3, the moving mechanism 2 is provided with two groups, and the two groups of moving mechanisms 2 are respectively located at two sides of the door opening 10, and the moving mechanism 2 includes a bearing plate 21 and a roller 22. The bearing plate 21 is arranged at the bottom of the bent main body 1; the roller 22 is arranged below the bearing plate 21 and is in rolling fit with the steel walking platform 4. Two supporting plates 21 are respectively arranged at two sides of the door opening 10 and are positioned at the bottom of the bent main body 1 to support the bent main body 1 and ensure the structural strength of the bent main body 1; the roller 22 is arranged below the bearing plate 21 to realize the integral movement of the bent main body 1, and the roller 22 has strong flexibility, so that the bent main body 1 can flexibly move.

In some embodiments, referring to fig. 1 and 2, the bent main body 1 includes a plurality of vertical rod assemblies 11 and a plurality of horizontal rod assemblies 12, the vertical rod assemblies 11 include a plurality of vertical rods 111 sequentially connected from top to bottom, the horizontal rod assemblies 12 include a plurality of horizontal rods 12 sequentially connected along a preset horizontal direction, the vertical rods 111 are parallel to each other, the horizontal rods 112 are parallel to each other, the adjacent vertical rods 111 and the horizontal rods 112 are vertically crossed and are fixedly connected at the right crossing points through butt joint fasteners, the bent main body 1 further includes cover plates 13, and the plurality of cover plates 13 are arranged at the top of the vertical rods 111 at intervals; a reinforcing diagonal 17 is provided between two uprights 111 adjacent in the horizontal direction, close to the door opening 10.

It should be noted that, in the same upright component 11, a plurality of uprights 111 are sequentially connected from top to bottom, and the connection points are fastened by the butt-joint fasteners; in the same cross bar assembly 12, a plurality of horizontal bars 121 are sequentially connected along the horizontal direction, and the connecting points are buckled through butt-joint fasteners.

It should be noted that, referring to fig. 7, the upright 111 on the left side and the upright 111 in the middle in the figure are two upright 111 adjacent in the horizontal direction, and a reinforcing diagonal 17 is disposed between the two uprights 111; the upright 111 on the right side and the upright 111 in the middle in the figure are two uprights 111 adjacent in the horizontal direction, and a reinforcing diagonal 17 is arranged between the two uprights 111.

The bent main body 1 that this embodiment provided, horizontal pole 121 and pole setting 111 are violently indulged the quadrature setting to the right-hand member point sets up butt joint fastener, and butt joint fastener can improve the structural strength and the structural stability of bent main body 1. The top of the upright 111 is capped by a cover 13, and the upper surface of the cover 13 is used for performing operations.

In practice, the upright 111 and the horizontal rod 121 are straight and smooth steel pipes, each steel pipe has a dimension of phi 48.3mm by 3.6mm, and each steel pipe has a dimension of not more than 25.8kg.

In particular, the plurality of upright posts 111 overlap end to end in the up-down direction, so that the cover 13 is provided with a plurality of upright posts and is disposed at intervals in the up-down direction.

In specific implementation, referring to fig. 5, a door opening 10 is formed below the middle of the bent main body 1, auxiliary rods 112 are arranged on upright rods 111 adjacent to two sides of the door opening 10, the auxiliary rods 112 are fixedly connected with the upright rods 111 through rotary fasteners, and the auxiliary rods 112 are used for improving the supporting capacity of the upright rods 111 and guaranteeing stable forming of the door opening 10.

The auxiliary rod 112 and the vertical rod 111 are matched to form a supporting component, the structural strength of the supporting component is high, the supporting component has good bearing capacity, the supporting effect is better than that of the vertical rod 111 which is independently arranged, and the stability and the safety of the door opening 10 are improved.

In specific implementation, the vertical rod 111 is divided into a longitudinal vertical rod and a transverse vertical rod, the horizontal rod 121 is divided into a longitudinal horizontal rod and a transverse horizontal rod, the longitudinal horizontal rod is arranged on the inner side of the vertical rod 111, and the longitudinal horizontal rod is lengthened by adopting a butt joint fastener or lap joint. The two adjacent longitudinal horizontal rods should not be arranged in the same time or span; the distance of the non-synchronization or different staggering in the horizontal direction across two adjacent joints should be greater than 50cm; the distance from the center of each joint to the main node is not more than 1/3 of the longitudinal distance; the lap joint length is not less than 1m, and 3 rotary fasteners are arranged at equal intervals for fixation; the distance from the edge of the end fastener cover plate to the end of the lap joint longitudinal horizontal rod is not less than 10cm; the longitudinal horizontal bars serve as supports for the transverse horizontal bars and are fixed to the upright 111 by right angle fasteners.

In some embodiments, referring to fig. 2, a scissors stay 14 is provided on the outer side of the bent main body 1, and the scissors stay 14 includes a plurality of sets of diagonal braces disposed to intersect, and both ends of the diagonal braces are hinged to horizontal bars 121, respectively. The scissors stay 14 is used for improving the structural strength of the bent main body 1, the scissors stay 14 and the bent main body 1 form a triangular support, and the structural stability of the bent main body 1 is improved.

In the concrete implementation, the width of each shear stay should not be smaller than 4.5m, and the inclination angle between the inclined rod and the ground should be between 45 and 60 degrees. The diagonal rods of the scissors stay 16 are connected in a lap joint or butt joint mode. The diagonal rods of the scissor braces are fixed on the extending ends or the vertical rods of the transverse horizontal rods intersected with the diagonal rods by using rotary fasteners, and the distance from the central line of each rotary fastener to the main joint should not be more than 15cm.

In the concrete implementation, continuous vertical scissors support are arranged around and inside the bent main body 1 every 6m to 8m in the longitudinal and transverse directions from bottom to top. When the height of the bent main body 1 is below 8m, a continuous horizontal scissors support is arranged at the top of the bent main body 1; when the height of the bent main body 1 is 8m or more, horizontal continuous scissors supports are respectively arranged at the bottom, the top and the vertical intervals of the bent main body 1 not more than 8m. The horizontal cross bracing is preferably arranged on the intersecting plane of the vertical cross bracing diagonal bars. The width of the scissors support is 6-8 m.

In some embodiments, referring to fig. 1, a railing 15 and a foot guard are provided on the cover 13, and a safety net is provided outside the railing 15. The cover plate 13 forms a working layer, workers work on the working layer, so that the safety of the workers is ensured by arranging the railing 15 and the foot blocking plate, and the safety net further improves the operation safety degree.

The cover plate 13 is also provided with a scaffold board, the scaffold board is a wood board or a bamboo string board, the weight of the single scaffold board is not more than 30kg, the thickness of the wood board is not less than 5cm, and two galvanized steel wire hoops with diameters not less than 4mm are respectively arranged at two ends.

In practice, each three horizontal bars 121 form a group, and the groups of bars 121 together support the scaffold board. The scaffold plates should be laid by butt joint or lap joint, two horizontal bars should be arranged at the joint when the scaffold plates are butt joint and laid, and the overhanging length of the receiving plate should be removed

The sum of the overhanging lengths of the two scaffold plates should not be more than 30cm.

When the scaffold board is lapped and paved, the joint is supported on the transverse horizontal rod 121, the lapping length is not more than 20cm, and the length of the joint extending out of the transverse horizontal rod is not more than 10cm. The two ends of the scaffold board are firmly bound on the steel pipe by using 4mm galvanized lead wires.

The length of the probe of the scaffold board at the end part of the working layer is 15cm; the foot blocking plate adopts a bamboo string plate; the upright posts of the railing 15 are directly extended upright posts 111 or are overlapped with the upright posts 111, and two longitudinal horizontal rods 121 are equidistantly arranged between the foot blocking plate and the upper railing 15.

In some embodiments, referring to fig. 2, the mobile bent further includes a ladder stand 16, where the ladder stand 16 is fixed on one side of the bent main body 1, and the ladder stand 16 engages the moving mechanism 2 and the cover plate 13 located below, and also engages the adjacent cover plate 13. The ladder stand 16 is used for the staff to move to the cover plate 13, so that the operation is convenient.

In some embodiments, the bent main body 1 is further provided with a sweeping bar fixed to the bottom 20cm of the upright 111 at the bottom of the bent main body 1 by a right angle fastener.

In some embodiments, referring to fig. 6, the steel walking platform 4 includes a plurality of support plates 41 sequentially connected along the extending direction of the tunnel, the support plates 41 are laid on the bottom of the tunnel, and the moving mechanism 2 is movably arranged on the support plates 41. The roller 22 moves on the supporting plate 41, the supporting plate 41 can change the moving environment of the roller 22, the phenomena of pits or inclination and the like on a moving surface are avoided, the moving stability of the bent main body 1 is affected, and the bent main body 1 is prevented from overturning. The supporting plate 41 of polylith links up from beginning to end, has improved and has walked steel platform 4 and assembled and demolish efficiency, can remove the supporting plate 41 of installing at the front end with terminal supporting plate 41 moreover after moving main part 1 and remove a distance, saves the cost of laying and walking steel platform 4.

In specific implementation, the supporting plate 41 is fixed at the bottom of the tunnel through steel bars, the supporting plate 41 is provided with jacks, and the steel bars penetrate through the jacks to be inserted into the bottom surface inside the tunnel.

In some embodiments, referring to fig. 4, the traction mechanism 3 includes a traveling pile 31 and a traction guide chain 32. The movable pile 31 is detachably arranged on the steel walking platform 4 and is positioned in front of the bent main body 1; the traction guide chain 32 is connected with the moving pile 31 and the moving mechanism 2 at two ends respectively. The movable piles 31 are supported as fixed supporting points, the traction guide chains 32 are manually controlled, and the movable mechanisms 2 are pulled to move through the traction guide chains 32, so that stable movement of the bent main body 1 is realized, and the moving stability of the bent main body 1 is ensured.

In practice, the moving pile 31 is a reinforcing bar of Φ22mm and is at a distance of 30m from the moving mechanism 2. The moving pile 31 is inserted on the steel platform 4 and is connected with the moving mechanism 2 through a traction guide chain 32.

On the basis of the above embodiment, referring to fig. 8, a plurality of support rods 42 are provided on the steel walking platform 4 along the laying path of the steel walking platform 4, each support rod 42 is vertically arranged, and the support rod 42 corresponds to the inner side of the door opening 10; a locking mechanism 5 is arranged on one side of the moving mechanism 2 adjacent to the door opening 10, one end of the locking mechanism 5 is hinged with the moving mechanism 2, and the other end is detachably connected with the supporting rod 42. The bracing piece 42 is fixed on walking steel platform 4, and bracing piece 42 passes through locking mechanical system 5 and mobile mechanism 2 to be connected, prevents that bent main part 1 atress aversion and rocking from influencing the construction safety in the work progress, guarantees the stability of bent main part 1 in the work progress.

The support rods 42 are provided on both sides of the inner wall of the door opening 10, so that the movement of the bent main body 1 is not affected, and the traffic in the door opening 10 is not affected.

In specific implementation, the two rows of support rods 42 are arranged in parallel along the laying direction of the steel platform 4, and the two rows of support rods 42 respectively correspond to two sides of the inside of the door opening 10 and are respectively matched with the two moving mechanisms 2.

Specifically, referring to fig. 9, the locking mechanism 5 includes a telescopic cylinder 51, and a cylinder body of the telescopic cylinder 51 is rotatably disposed on a side of the moving mechanism 2 facing the door opening 10, and a telescopic direction of the telescopic cylinder 51 is perpendicular to a rod body of the support rod 42; the supporting rod 42 is correspondingly provided with a connecting piece 421, the connecting piece 421 is rotatably arranged on the supporting rod 42, and the rotating shaft of the connecting piece 421 is parallel to the rod body of the supporting rod 42; the telescopic end of the telescopic cylinder 51 is detachably connected to the connecting member 421. The telescopic oil cylinder 51 both ends respectively with mobile mechanism 2 and bracing piece 42 rotate to be connected, can make bracing piece 42 adapt to the displacement position of bent main part 1, need not accurate alignment telescopic oil cylinder 51 and bracing piece 42, make things convenient for on-the-spot quick fixed mobile mechanism 2, and then fixed bent main part 1.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (10)

1. A mobile bent, comprising:

the bent main body is provided with a door opening arranged along the extending direction of the tunnel at the bottom;

the moving mechanism is arranged at the bottom of the bent main body;

the traction mechanism is arranged at the front end of the moving mechanism and is used for guiding the moving mechanism to move forwards; and

the steel walking platform is paved at the bottom of the tunnel, and the moving mechanism is movably arranged above the steel walking platform.

2. The mobile bent according to claim 1, wherein the moving mechanism is provided with two groups, the two groups of moving mechanisms being respectively located at both sides of the door opening, the moving mechanism comprising:

the bearing plate is arranged at the bottom of the bent main body; and

the roller is arranged below the bearing plate and is in rolling fit with the steel walking platform.

3. The movable bent according to claim 2, wherein the bent main body comprises a plurality of vertical rod assemblies and a plurality of cross rod assemblies, the vertical rod assemblies comprise a plurality of vertical rods sequentially connected from top to bottom, the cross rod assemblies comprise a plurality of horizontal rods sequentially connected along a preset horizontal direction, the vertical rods are parallel to each other, the horizontal rods are parallel to each other, the adjacent vertical rods and the horizontal rods are vertically crossed and are fixedly connected at the right-angle point through butt joint fasteners, the bent main body further comprises cover plates, and the cover plates are arranged at the tops of the vertical rods at intervals;

and a reinforcing diagonal rod is arranged between two adjacent vertical rods in the horizontal direction and close to the door opening.

4. The movable bent according to claim 3, wherein a scissors support is arranged on the outer side of the bent main body, the scissors support comprises a plurality of groups of inclined support rods which are arranged in a crossing mode, and two ends of each inclined support rod are hinged with the horizontal rods respectively.

5. A mobile bent according to claim 3, wherein the cover plate is provided with a railing and a foot guard, and a safety net is arranged outside the railing.

6. The mobile bent according to claim 3, further comprising a ladder secured to a side of the bent body, the ladder engaging the moving mechanism and the underlying cover plate and also engaging an adjacent cover plate.

7. The movable bent according to claim 1, wherein the steel platform comprises a plurality of support plates sequentially connected along the extending direction of the tunnel, the support plates are laid on the bottom of the tunnel, and the moving mechanism is movably arranged on the support plates.

8. The mobile bent according to claim 1, wherein the traction mechanism includes:

the movable pile is detachably arranged on the steel walking platform and is positioned in front of the bent main body; and

and the two ends of the traction guide chain are respectively connected with the movable pile and the movable mechanism.

9. The movable bent according to claim 8, wherein a plurality of support rods are provided on the steel walking platform along a laying path of the steel walking platform, each of the support rods being vertically disposed, the support rods corresponding to an inner side of the door opening;

and one side, close to the door opening, of the moving mechanism is provided with a locking mechanism, one end of the locking mechanism is hinged with the moving mechanism, and the other end of the locking mechanism is detachably connected with the supporting rod.

10. The movable bent according to claim 9, wherein the locking mechanism comprises a telescopic cylinder, the cylinder body of the telescopic cylinder is rotatably arranged on one side of the moving mechanism facing the door opening, and the telescopic direction of the telescopic cylinder is perpendicular to the rod body of the support rod;

the telescopic oil cylinder is characterized in that a connecting piece is correspondingly arranged on the supporting rod, the connecting piece is rotationally arranged on the supporting rod, the rotating shaft of the connecting piece is parallel to the rod body of the supporting rod, and the telescopic end of the telescopic oil cylinder is detachably connected with the connecting piece.

Images