CN217925920U

CN217925920U - Trolley for tunnel construction

Info

Publication number: CN217925920U
Application number: CN202222407964.0U
Authority: CN
Inventors: 粟登学
Original assignee: Chongqing Fanfu Construction Engineering Co ltd
Current assignee: Chongqing Fanfu Construction Engineering Co ltd
Priority date: 2022-09-09
Filing date: 2022-09-09
Publication date: 2022-11-29
Anticipated expiration: 2032-09-09

Abstract

The application relates to a trolley for tunnel construction, which comprises a travelling mechanism and a rack arranged on the travelling mechanism, wherein the rack is provided with a laying mechanism, the laying mechanism comprises at least one track, a support connected to the track in a sliding manner, a driving piece used for driving the support to slide relative to the track, a first feeding assembly arranged on the support and a tensioning piece, the first feeding assembly comprises an installation roller and a fixing piece used for fixing the installation roller on the support, the fixing piece is arranged on the support, and the installation roller is used for penetrating through and installing a waterproof cloth roll of a seat; the tensioning piece is used for supporting the waterproof cloth tightly on the inner wall of the tunnel, the track is fixedly connected to the rack, the track is arc-shaped, the driving piece is arranged on the rack, and the support is fixedly connected to the driving end of the driving piece. This application has the effect of the efficiency of laying that promotes tunnel tarpaulin.

Description

Trolley for tunnel construction

Technical Field

The application relates to the field of tunnel construction technology, in particular to a trolley for tunnel construction.

Background

The tunnel waterproofing is an important link of the construction quality of tunnel engineering, and is also one of the links with complicated operation process and larger construction difficulty. After the tunnel is subjected to primary lining, a layer of waterproof cloth is laid on the inner wall of the tunnel, and secondary lining is carried out to improve the waterproof effect of the tunnel.

At present, often be provided with the tarpaulin platform truck in the tunnel, the tarpaulin platform truck includes running gear and the rack by the shaped steel tailor-welding, and running gear includes base and a plurality of walking wheels that articulate in the base, and the rack sets up in the base. The rack is as constructor operation platform and relevant material stack platform, and the rack is provided with a plurality of operation platforms along the arc inner wall profile of tunnel cross-section. Weld into width of cloth waterproof, constructor is through climbing in proper order and standing to the operation platform of different positions and height, spreads waterproof yardage roll and paves the compaction back along the inner wall of tunnel cross-section, welds waterproof cloth on the tunnel inner wall again and fixes.

Because the span of the tunnel is very large, the laying area of the waterproof cloth is also very large, and the process that constructors unroll the waterproof cloth roll along the inner wall of the tunnel is difficult. And, when welding the tarpaulin in the tunnel inner wall, need other personnel to weld compressing tightly of tarpaulin, the unable one-man operation of laying of tarpaulin, constructor's working strength is great, and the efficiency of laying of tarpaulin is lower, and leads to the construction process in tunnel to slow down.

SUMMERY OF THE UTILITY MODEL

In order to promote the efficiency of laying of tunnel tarpaulin, this application provides a platform truck for tunnel construction.

The application provides a platform truck for tunnel construction adopts following technical scheme:

a trolley for tunnel construction comprises a travelling mechanism and a rack arranged on the travelling mechanism, wherein the rack is provided with a laying mechanism, the laying mechanism comprises at least one track, a support connected to the track in a sliding manner, a driving piece used for driving the support to slide relative to the track, a first feeding assembly arranged on the support and a tensioning piece, the first feeding assembly comprises an installation roller and a fixing piece used for fixing the installation roller on the support, the fixing piece is arranged on the support, and the installation roller is used for penetrating through and installing a waterproof cloth roll of a seat; the tensioning piece is used for supporting the waterproof cloth tightly on the inner wall of the tunnel, the track is fixedly connected to the rack, the track is arc-shaped, the driving piece is arranged on the rack, and the support is fixedly connected to the driving end of the driving piece.

By adopting the technical scheme, when the waterproof cloth is laid on the tunnel, the waterproof cloth roll is firstly sleeved and arranged on the mounting roller, one end of the waterproof cloth is welded and fixed on the inner wall of the bottom of the tunnel, the driving piece drives the support to slide along the track, the waterproof cloth roll rotates relative to the mounting roller and enables the waterproof cloth to be unfolded, the tensioning piece compresses and paves the unfolded waterproof cloth on the inner wall of the tunnel, and a constructor is not required to expand the waterproof cloth roll with a larger area and compress and pave the waterproof cloth on the inner wall of the tunnel; when the waterproof cloth is welded, the waterproof cloth is not required to be compressed by other personnel, the waterproof cloth can be directly welded, the difficulty of laying the waterproof cloth is reduced, the working strength of constructors is reduced, the laying efficiency of the waterproof cloth is improved, and the process of tunnel construction can be accelerated.

Optionally, the support still is provided with second material loading subassembly, second material loading subassembly's constitutional structure is the same with first material loading subassembly, and first material loading subassembly installation roller sets up along the relative orbital glide path interval of support with the installation roller of second material loading subassembly, tensioning piece is located between first material loading subassembly and the second material loading subassembly.

Through adopting above-mentioned technical scheme, the same cover is equipped with waterproof yardage roll on the installation roller of second material loading subassembly, and one side inner wall of tunnel bottom is original point department, and the relative one side inner wall of tunnel bottom is the turning department. When the support is located at the origin, the mounting roller of the first feeding assembly is located above the mounting roller of the second feeding assembly, one end of the waterproof cloth on the mounting roller of the first feeding assembly is welded and fixed at the origin, and the driving piece drives the support to slide along the rail to complete the laying of the section of tunnel waterproof cloth. After the bracket finishes single-way sliding along the track, the bracket is positioned at the turning position. The traveling system drives the rack to move forwards to the next section of tunnel, one end of the waterproof cloth on the installation roller of the second feeding assembly is welded and fixed at the turning position of the next section of tunnel, and the driving piece drives the support to slide back along the rail so as to finish laying the waterproof cloth of the next section of tunnel. The support can accomplish laying of two sections of tunnel tarpaulins along orbital one-time two-way slip in-process, has promoted the laying efficiency of tarpaulin. Tensioning piece is equallyd divide the below that is located first material loading subassembly and second material loading subassembly respectively in orbital two-way slip is followed to the support for tensioning piece can compress tightly the tarpaulin on first material loading subassembly and the second material loading subassembly in the tunnel, so that weld the tarpaulin in the tunnel inner wall.

Optionally, the mounting includes two fixing bases and two stationary blades, two equal fixed connection of fixing base in support, two the stationary blade all is the arc, two the stationary blade corresponds respectively to set up in two fixing bases, two the standing groove has all been seted up to the fixing base, stationary blade one end articulates in one side border of standing groove, the bolt is worn to be equipped with by the other end of stationary blade, the bolt is inserted and is established and threaded connection in fixing base, the installation roller is located the standing groove of two fixing bases simultaneously.

Through adopting above-mentioned technical scheme, take off the installation roller to locate the installation roller with waterproof cloth rolling up cover after, place the installation roller in the standing groove of two fixing bases simultaneously again, rotate the relative fixing base of stationary blade, make the stationary blade lock in the standing groove, rotate the bolt and make it insert and establish and threaded connection in fixing base, so that the stationary blade compresses tightly in the installation roller, in order to install installation roller fixed mounting in the support.

Optionally, the tensioning piece includes a plurality of cylinders, and is a plurality of the equal fixed connection in support of cylinder is a plurality of the stretching out and drawing back direction of the flexible end of cylinder all sets up to the rack dorsad.

Through adopting above-mentioned technical scheme, behind the inner wall with the one end welded fastening of tarpaulin in the tunnel bottom, start a plurality of cylinders, the flexible end of a plurality of cylinders stretches out simultaneously and supports the tarpaulin tightly in the tunnel inner wall to compress tightly the tarpaulin and lay in the tunnel inner wall, so that constructor welds the tarpaulin in the tunnel inner wall, and does not need the manual work to compress tightly the tarpaulin in the tunnel inner wall, has reduced constructor's working strength, has improved laying efficiency simultaneously.

Optionally, the flexible end setting of cylinder is used for adapting to the elastic expansion spare of tunnel inner wall unevenness department, elastic expansion spare includes dead lever, movable rod and spring, dead lever fixed connection is in the flexible end of cylinder, the activity is worn to establish and is slided and connect in the dead lever, spring while fixed connection is in dead lever and movable rod, the slip path of the relative dead lever of movable rod is on a parallel with the flexible route of the flexible end of cylinder.

Through adopting above-mentioned technical scheme, when the flexible end of cylinder compressed tightly the tarpaulin in the tunnel inner wall, carry out elasticity through the movable rod relative fixed pole and stretch out and draw back, the movable rod can adapt to the not regular part in tunnel inner wall surface, reduces to take place to contradict because of the flexible end of cylinder and tunnel inner wall protrusion department, and makes the support be difficult to continue to slide along the track or the flexible end of cylinder takes place the possibility of damaging because of the removal by force.

Optionally, one end of the movable rod, which is far away from the air cylinder, is rotatably connected with a roller.

Through adopting above-mentioned technical scheme, the relative tarpaulin slides when the movable rod compresses tightly the tarpaulin, and the gyro wheel converts the sliding of the relative tarpaulin of movable rod into the roll, reduces the frictional resistance when the relative tarpaulin of movable rod removes to reduce because of the frictional resistance of movable rod and tarpaulin is too big, the movable rod causes the possibility of damaging to the tarpaulin.

Optionally, the driving part comprises a driving motor, a chain wheel rotatably connected to the rack and a transmission chain meshed with the chain wheel, the driving motor is fixedly connected to the rack, the chain wheel is fixedly connected with an output end of the driving motor, the transmission chain is slidably connected to the rail, the transmission chain is used for enabling the support to slide along the rail, and the support is fixedly connected to the transmission chain.

Through adopting above-mentioned technical scheme, open driving motor, driving motor's output drives the relative rack of sprocket and rotates, and the sprocket drives the relative track of conveying chain and slides to make the sprocket drive the relative track of support and slide.

Optionally, the track includes first guide rail and second guide rail, the equal fixed connection of first guide rail and second guide rail is in the rack, first guide rail and second guide rail all are the arc, the arc concentric setting of first guide rail and second guide rail, the arc radius of second guide rail is greater than first guide rail, conveying chain sliding connection is in first guide rail, just conveying chain is located between first guide rail and the second guide rail.

Through adopting above-mentioned technical scheme, the conveying chain is located between first guide rail and the second guide rail, and the second guide rail protects the conveying chain to reduce the tenesmus that produces among the tunnel work progress and pound to the chain, cause the damage to the conveying chain, and make the conveying chain can't drive the support and slide relative first guide rail, drag the possibility of the process of laying of tarpaulin slowly.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the driving piece drives the support to slide along the track, the waterproof cloth roll rotates relative to the mounting roller and enables the waterproof cloth to be unfolded, and the tensioning piece presses and paves the unfolded waterproof cloth on the inner wall of the tunnel, so that a constructor can weld the waterproof cloth on the inner wall of the tunnel conveniently, the difficulty of laying the waterproof cloth is reduced, the working strength of the constructor is reduced, the laying efficiency of the waterproof cloth is improved, and meanwhile, the progress of tunnel construction is accelerated;

2. the support can finish the laying of two sections of tunnel waterproof cloth in the one-time bidirectional sliding process along the track, so that the laying efficiency of the waterproof cloth is improved;

3. the movable rod elastically stretches relative to the fixed rod, so that the possibility that the support is difficult to continuously slide along the track or the telescopic end of the cylinder is damaged due to forced movement due to the fact that the telescopic end of the cylinder is abutted to the protruding part of the inner wall of the tunnel is reduced.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present application.

Fig. 2 is a schematic structural diagram of a drive motor, a sprocket and a support in an embodiment of the present application.

Fig. 3 is an enlarged schematic structural view of part a in the embodiment of the present application.

Figure 4 is a schematic diagram of the structure of a tensioning assembly in an embodiment of the present application.

Fig. 5 is a schematic sectional view taken along line B-B in fig. 4.

Reference numerals: 1. a traveling mechanism; 11. a traveling wheel; 2. a rack; 3. a laying mechanism; 31. a track; 311. a first guide rail; 312. a second guide rail; 32. a support; 33. a drive member; 331. a drive motor; 332. a sprocket; 333. a conveyor chain; 34. a first feeding assembly; 341. mounting a roller; 342. a fixing member; 3421. a fixed seat; 3422. a fixing sheet; 3423. a placement groove; 35. a tensioning member; 351. a cylinder; 36. a second feeding assembly; 4. a bolt; 5. an elastic expansion member; 51. fixing the rod; 52. a movable rod; 53. a spring; 6. a roller; 7. a support; 8. a rotating wheel; 9. and (5) operating the platform.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses platform truck for tunnel construction. Referring to fig. 1, the trolley for tunnel construction comprises a travelling mechanism 1 and a rack 2 arranged on the travelling mechanism 1, the travelling mechanism 1 comprises four travelling wheels 11, the four travelling wheels 11 are respectively and rotatably connected to the rack 2, and four travelling wheel 11 arrays are respectively arranged below the rack 2.

Referring to fig. 1, a laying mechanism 3 is disposed on the gantry 2, and the laying mechanism 3 includes two rails 31, a bracket 32, a first feeding assembly 34 disposed on the bracket 32, a tensioning member 35, and a driving member 33. Two rails 31 are fixedly attached to the gantry 2, and the two rails 31 are provided at intervals in the advancing direction of the gantry 2. Both rails 31 are arc-shaped and the gantry 2 is located in the arc-shaped openings of both rails 31 at the same time. The support 32 extends along the advancing direction of the table 2, and the support 32 is simultaneously sleeved and slidably connected with the two rails 31.

Referring to fig. 1 and 2, the number of the driving members 33 is set to two corresponding to the rails 31, and the two driving members 33 are respectively provided at both ends of the gantry 2 in the advancing direction of the gantry 2. The driving member 33 includes a driving motor 331, a sprocket 332 and a transmission chain 333, the driving motor 331 is fixedly connected to the gantry 2, the sprocket 332 is rotatably connected to the gantry 2 through the support 7, and an output end of the driving motor 331 is fixedly connected to a central portion of the sprocket 332. The transmission chain 333 is sleeved and engaged with the chain wheel 332, the rack 2 and the track 31 are rotatably connected with a plurality of rotating wheels 8, the transmission chain 333 is sleeved and engaged with the plurality of rotating wheels 8 at the same time, the plurality of rotating wheels 8 guide the transmission chain 333, so that the transmission chain 333 is connected with the track 31 in a sliding way, and the sliding path of the transmission chain 333 along the track 31 is arc-shaped. The support frame 32 is fixedly connected to the transmission chains 333 of the two driving members 33, and the support frame 32 is located on the side of the transmission chains 333 far away from the rotating wheel 8.

The driving motor 331 is turned on, the output end of the driving motor 331 drives the chain wheel 332 to rotate relative to the rack 2, and the chain wheel 332 drives the transmission chain 333 to slide relative to the rail 31, so that the transmission chain 333 drives the bracket 32 to slide relative to the rail 31.

Referring to fig. 1, to ensure the normal operation of the transmission chain 333, the track 31 includes a first guide rail 311 and a second guide rail 312, and both the first guide rail 311 and the second guide rail 312 are fixedly connected to the rack 2. The first guide rail 311 and the second guide rail 312 are both arc-shaped, the arc-shaped centers of the first guide rail 311 and the second guide rail 312 are concentrically arranged, and the arc radius of the second guide rail 312 is larger than that of the first guide rail 311. The plurality of wheels 8 are rotatably connected to the first guide rail 311, the transmission chain 333 is slidably connected to the first guide rail 311 by the plurality of rollers 6, and the transmission chain 333 is located between the first guide rail 311 and the second guide rail 312.

The transmission chain 333 is located between the first guide rail 311 and the second guide rail 312, and the second guide rail 312 protects the transmission chain 333 to reduce the possibility that objects falling down during the tunnel construction process fall down to the transmission chain 333 to damage the transmission chain 333, so that the transmission chain 333 cannot drive the support 32 to slide relative to the first guide rail 311, and the laying process of the waterproof cloth is slowed.

Referring to fig. 1 and 3, the first feeding assembly 34 includes an installation roller 341 and a fixing member 342, the fixing member 342 includes two fixing bases 3421 and two fixing pieces 3422, the two fixing bases 3421 are both fixedly connected to the support 32, the two fixing bases 3421 are perpendicular to the support 32, the two fixing bases 3421 are spaced apart along the length direction of the support 32, the two fixing bases 3421 are both provided with a placement groove 3423, and the two placement grooves 3423 are both arc-shaped. The two fixing pieces 3422 are both arc-shaped, the two fixing pieces 3422 are respectively and correspondingly disposed on the two fixing bases 3421, and the arc-shaped openings of the fixing pieces 3422 and the placing grooves 3423 are disposed oppositely. One end of the fixing piece 3422 is hinged to one side edge of the placing groove 3423, a bolt 4 is inserted through the other end of the fixing piece 3422, and the bolt 4 is inserted and screwed into the other side edge of the placing groove 3423. The installation rollers 341 are simultaneously located in the two placement grooves 3423, and the installation rollers 341 are located in the arc-shaped openings of the fixing pieces 3422.

After the waterproof cloth is wound around the installation roller 341, the installation roller 341 is placed in the placement grooves 3423 of the two fixing bases 3421, the fixing pieces 3422 are rotated relative to the fixing bases 3421, so that the fixing pieces 3422 are buckled to the placement grooves 3423, the bolts 4 are rotated to be inserted and screwed into the fixing bases 3421, so that the fixing pieces 3422 are pressed against the installation roller 341, and the installation roller 341 is fixedly installed on the bracket 32.

When laying the waterproof cloth for the tunnel, firstly, the waterproof cloth is wound and arranged on the installation roller 341, one end of the waterproof cloth is welded and fixed on the inner wall of the bottom of the tunnel, the driving motor 331 is started, the transmission chain 333 drives the bracket 32 to slide along the first guide rail 311, the waterproof cloth is rotated relative to the installation roller 341 and is unfolded, the tensioning piece 35 compresses and paves the unfolded waterproof cloth on the inner wall of the tunnel, and a constructor is not required to expand the waterproof cloth with a larger area and compress and pave the waterproof cloth on the inner wall of the tunnel; when the waterproof cloth is welded, the waterproof cloth is not required to be compressed by other personnel, the waterproof cloth can be directly welded, the difficulty of laying the waterproof cloth is reduced, the working strength of constructors is reduced, the laying efficiency of the waterproof cloth is improved, and the process of tunnel construction can be accelerated.

Referring to fig. 1, the bracket 32 is further provided with a second feeding assembly 36, the composition structure of the second feeding assembly 36 is the same as that of the first feeding assembly 34, the two fixing bases 3421 of the second feeding assembly 36 are also fixedly connected to the bracket 32, the opening directions of the placing grooves 3423 of the fixing bases 3421 of the first feeding assembly 34 and the second feeding assembly 36 are opposite, and the mounting rollers 341 of the first feeding assembly 34 and the mounting rollers 341 of the second feeding assembly 36 are arranged at intervals along the sliding path of the bracket 32 along the first guide rail 311.

The installation roller 341 of the second feeding assembly 36 is also sleeved with a waterproof cloth roll, the inner wall of one side of the bottom of the tunnel is the origin, and the inner wall of the opposite side of the bottom of the tunnel is the turning point. When the bracket 32 is located at the origin, the mounting roller 341 of the first feeding assembly 34 is located above the mounting roller 341 of the second feeding assembly 36, one end of the waterproof cloth on the mounting roller 341 of the first feeding assembly 34 is welded and fixed at the origin, and the conveying chain 333 drives the bracket 32 to slide along the first guide rail 311 to complete the laying of the section of the tunnel waterproof cloth. After the rack 32 completes the single sliding movement along the first guiding rail 311, the rack 32 is at the turning point. The frame is moved forward to the next section of tunnel by rolling the walking wheels 11, one end of the waterproof cloth on the mounting roller 341 of the second feeding assembly 36 is welded and fixed at the turning position of the next section of tunnel, and the transmission chain 333 drives the bracket 32 to perform return sliding so as to finish the laying of the waterproof cloth of the next section of tunnel.

The support 32 can complete the laying of two sections of tunnel waterproof cloth in the one-time bidirectional sliding process along the first guide rail 311, and the laying efficiency of the waterproof cloth is improved. The tension member 35 is respectively located below the first feeding assembly 34 and the second feeding assembly 36 in the bidirectional sliding of the bracket 32 along the first guide rail 311, so that the tension member 35 can press the waterproof cloth on the first feeding assembly 34 and the second feeding assembly 36 to the tunnel, so as to weld the waterproof cloth on the inner wall of the tunnel.

Referring to fig. 1 and 4, the tensioning member 35 includes a plurality of cylinders 351, the plurality of cylinders 351 are all fixedly connected to the support 32, the plurality of cylinders 351 are arranged at intervals along the length direction of the support 32, and the plurality of cylinders 351 are all located between the first feeding assembly 34 and the second feeding assembly 36. The plurality of cylinders 351 are all perpendicular to the support 32, and the extending directions of the telescopic ends of the plurality of cylinders 351 are the same and are all arranged back to the rack 2.

Referring to fig. 4 and 5, the telescopic end of the cylinder 351 is provided with an elastic telescopic member 5, and the elastic telescopic member 5 includes a fixed rod 51, a movable rod 52, and a spring 53. The fixed rod 51 is fixedly connected to the telescopic end of the cylinder 351, and the movable rod 52 penetrates through and is slidably connected to the fixed rod 51. One end of the spring 53 is fixedly connected to the inner wall of the fixed rod 51, and the other end of the spring 53 is fixedly connected to the movable rod 52. The sliding path of the movable rod 52 relative to the fixed rod 51 is parallel to the telescopic path of the telescopic end of the cylinder 351.

After the one end welded fastening of tarpaulin is in the inner wall of tunnel bottom, start a plurality of cylinders 351, the flexible end of a plurality of cylinders 351 stretches out simultaneously and supports the tarpaulin tightly in the tunnel inner wall to compress tightly the tarpaulin and pave in the tunnel inner wall, so that constructor welds the tarpaulin in the tunnel inner wall, and does not need the manual work to compress tightly the tarpaulin in the tunnel inner wall, has reduced constructor's working strength, has improved simultaneously and has laid efficiency.

Cylinder 351's flexible end compresses tightly the tarpaulin when tunnel inner wall, carries out elasticity through movable rod 52 relative fixed pole 51 and stretches out and draws back, and movable rod 52 can adapt to the not regular part in tunnel inner wall surface, reduces to take place to contradict because of cylinder 351's flexible end and tunnel inner wall protrusion department, and makes support 32 be difficult to continue to slide along first guide rail 311, or cylinder 351's flexible end takes place the possibility of damaging because of removing by force.

Referring to fig. 4 and 5, the movable rod 52 may slide against the tarpaulin while pressing the tarpaulin, and the tarpaulin may be damaged by the movable rod 52 due to excessive frictional resistance between the movable rod 52 and the tarpaulin. The end of the movable rod 52 far from the cylinder 351 is rotatably connected with a roller 6, and the rotation plane of the roller 6 relative to the movable rod 52 is parallel to the sliding path of the bracket 32 relative to the first guide rail 311. The roller 6 converts the sliding of the movable rod 52 relative to the waterproof cloth into rolling, and reduces the friction resistance when the movable rod 52 moves relative to the waterproof cloth, so as to reduce the possibility that the movable rod 52 damages the waterproof cloth due to the overlarge friction resistance between the movable rod 52 and the waterproof cloth.

Referring to fig. 1, a plurality of operation platforms 9 are fixedly connected to the rack 2, the operation platforms 9 are arranged at intervals along a sliding path of the bracket 32 relative to the first guide rail 311, and the operation platforms 9 are all arranged horizontally. When the support 32 slides along the rail 31 to finish the laying and pressing of the section of tunnel waterproof cloth, a constructor can climb onto the operation platforms 9 with different heights to weld the laid and pressed waterproof cloth in time, so that the possibility that the waterproof cloth falls off relative to the inner wall of the tunnel after being laid and before being welded is reduced.

The implementation principle of the trolley for tunnel construction in the embodiment of the application is as follows: when laying the waterproof cloth for the tunnel, firstly, the waterproof cloth is wound and arranged on the installation roller 341, one end of the waterproof cloth is welded and fixed on the inner wall of the bottom of the tunnel, the driving motor 331 is started, the transmission chain 333 drives the bracket 32 to slide along the first guide rail 311, the waterproof cloth is rotated relative to the installation roller 341 and is unfolded, the tensioning piece 35 compresses and paves the unfolded waterproof cloth on the inner wall of the tunnel, and a constructor is not required to expand the waterproof cloth with a larger area and compress and pave the waterproof cloth on the inner wall of the tunnel; when the waterproof cloth is welded, the waterproof cloth is not required to be compressed by other personnel, the waterproof cloth can be directly welded, the difficulty of laying the waterproof cloth is reduced, the working strength of constructors is reduced, the laying efficiency of the waterproof cloth is improved, and the process of tunnel construction can be accelerated.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a platform truck for tunnel construction, includes running gear (1) and sets up in rack (2) of running gear (1), its characterized in that: the rack (2) is provided with a laying mechanism (3), the laying mechanism (3) comprises at least one track (31), a support (32) connected to the track (31) in a sliding manner, a driving piece (33) used for driving the support (32) to slide relative to the track (31), a first feeding assembly (34) and a tensioning piece (35) arranged on the support (32), the first feeding assembly (34) comprises an installation roller (341) and a fixing piece (342) used for fixing the installation roller (341) on the support (32), the fixing piece (342) is arranged on the support (32), and the installation roller (341) is used for penetrating and installing a waterproof cloth roll of a seat; tensioning piece (35) are used for supporting the tarpaulin tightly in the tunnel inner wall, track (31) fixed connection is in rack (2), track (31) are the arc, driving piece (33) set up in rack (2), support (32) fixed connection is in the drive end of driving piece (33).

2. The tunnel construction trolley according to claim 1, wherein: the support (32) is also provided with a second feeding assembly (36), the composition structure of the second feeding assembly (36) is the same as that of the first feeding assembly (34), the installation rollers (341) of the first feeding assembly (34) and the installation rollers (341) of the second feeding assembly (36) are arranged at intervals along the sliding path of the support (32) relative to the track (31), and the tensioning piece (35) is positioned between the first feeding assembly (34) and the second feeding assembly (36).

3. The trolley for tunnel construction according to claim 1, wherein: the fixing piece (342) comprises two fixing seats (3421) and two fixing pieces (3422), the two fixing seats (3421) are fixedly connected to a support (32), the two fixing pieces (3422) are arc-shaped, the two fixing pieces (3422) are correspondingly arranged on the two fixing seats (3421) respectively, the two fixing seats (3421) are provided with placing grooves (3423), one ends of the fixing pieces (3422) are hinged to one side edge of the placing grooves (3423), bolts (4) penetrate through the other ends of the fixing pieces (3422), the bolts (4) are inserted and connected to the fixing seats (3421) in a threaded mode, and the installation roller (341) is located in the placing grooves (3423) of the two fixing seats (3421) simultaneously.

4. The tunnel construction trolley according to claim 1, wherein: tensioning member (35) include a plurality of cylinders (351), and is a plurality of equal fixed connection in support (32) of cylinder (351), it is a plurality of the extending direction of the flexible end of cylinder (351) all sets up to rack (2) dorsad.

5. The tunnel construction trolley according to claim 4, wherein: the flexible end of cylinder (351) is provided with elastic expansion spare (5) that are used for adapting to tunnel inner wall unevenness department, elastic expansion spare (5) include dead lever (51), movable rod (52) and spring (53), dead lever (51) fixed connection is in the flexible end of cylinder (351), movable rod (52) wear to establish and slide and connect in dead lever (51), spring (53) fixed connection is in dead lever (51) and movable rod (52) simultaneously, the slide path of movable rod (52) relative dead lever (51) is on a parallel with the flexible route of the flexible end of cylinder (351).

6. The tunnel construction trolley according to claim 5, wherein: one end of the movable rod (52) far away from the cylinder (351) is rotatably connected with a roller (6).

7. The tunnel construction trolley according to claim 1, wherein: the driving part (33) comprises a driving motor (331), a chain wheel (332) rotationally connected to the rack (2) and a transmission chain (333) meshed with the chain wheel (332), the driving motor (331) is fixedly connected to the rack (2), the chain wheel (332) is simultaneously and fixedly connected with an output end of the driving motor (331), the transmission chain (333) is slidably connected to the track (31), the transmission chain (333) is used for enabling the support (32) to slide along the track (31), and the support (32) is fixedly connected to the transmission chain (333).

8. The trolley for tunnel construction according to claim 7, wherein: track (31) include first guide rail (311) and second guide rail (312), first guide rail (311) and second guide rail (312) all fixed connection in rack (2), first guide rail (311) and second guide rail (312) all are the arc, the arc concentric setting of first guide rail (311) and second guide rail (312), the arc radius of second guide rail (312) is greater than first guide rail (311), conveying chain (333) sliding connection is in first guide rail (311), just conveying chain (333) is located between first guide rail (311) and second guide rail (312).