CN216767401U

CN216767401U - Inverted arch sliding form mechanism of full-circle needle beam trolley for tunnel construction

Info

Publication number: CN216767401U
Application number: CN202122925712.2U
Authority: CN
Inventors: 杨党荣; 郑世强; 刘仲伟; 邱天文
Original assignee: GUANGHAN JINDA TUNNELING MACHINERY CO Ltd
Current assignee: GUANGHAN JINDA TUNNELING MACHINERY CO Ltd
Priority date: 2021-11-25
Filing date: 2021-11-25
Publication date: 2022-06-17
Anticipated expiration: 2031-11-25

Abstract

The utility model relates to the technical field of tunnel construction, in particular to a full-circle needle beam trolley inverted arch sliding mode mechanism for tunnel construction, which comprises a plurality of sliding templates and an arc-shaped track, wherein the plurality of sliding templates comprise a plurality of arc-shaped templates and a plurality of conical rollers, the plurality of conical rollers are respectively arranged at four corners of the arc-shaped track and roll in the arc-shaped track, the sliding templates are respectively provided with a traction assembly and a driving assembly, and on the basis of not influencing the integral stress structure of the trolley, the problem of accumulation of bubbles on the surface of inverted arch concrete is solved to the maximum extent, so that concrete diseases such as honeycombs, pitted surfaces, bubbles and the like are avoided, the concrete construction quality of the needle beam trolley is further improved, the difficulty and the cost of surface treatment of the inverted arch concrete in the later stage are reduced, the mechanism has the advantages of simple and convenient operation, high accuracy and the like, and can be completed only by one constructor, can be widely used in the construction of various tunnel inverted arch linings, and has good application prospect.

Description

Inverted arch sliding form mechanism of full-circle needle beam trolley for tunnel construction

Technical Field

The utility model relates to the technical field of tunnel construction, in particular to an inverted arch sliding mode mechanism of a full-circle needle beam trolley for tunnel construction.

Background

In the construction of the secondary lining concrete of the full-circular section tunnel, the needle beam trolley is the most common construction equipment and has the advantages of quick concrete pouring construction, one-step forming of the full section, high efficiency, high cost, low cost and the like.

Because the construction surface of the full-circle needle beam trolley is of a full-closed structure, the phenomenon of bubble accumulation easily occurs on the concrete surface of the inverted arch part, and concrete diseases such as honeycombs, pitted surfaces, bubbles and the like often occur on the surface of the formed inverted arch concrete due to various reasons such as insufficient construction vibration and the like, so that the construction quality is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an inverted arch slip form mechanism of a full-circle needle beam trolley for tunnel construction, which aims to solve the problems in the background technology. In order to achieve the purpose, the utility model provides the following technical scheme: full circle needle beam platform truck invert slipform mechanism of tunnel construction includes a plurality of sliding template and arc track, a plurality of the sliding template includes a plurality of arc templates and a plurality of toper gyro wheel, a plurality of the toper gyro wheel sets up respectively in four orbital corners of arc, and rolls in the orbital inside of arc, last traction assembly and the drive assembly of being provided with respectively of sliding template.

Preferably, the arc-shaped rails are welded on the inner sides of the annular arch plates of the trolley bottom arch formworks, and the left and right sides of each sliding formwork are respectively provided with one arc-shaped rail.

Preferably, the traction assembly comprises a support beam, a guide pulley, an eyelet bolt, a nut and a traction chain, the sliding template is fixedly provided with a plurality of support beams, the traction chain is hinged on the sliding template through a plurality of support beams, and two ends of the traction chain are respectively connected with two ends of the sliding template through the eyelet bolt and the nut to form a closed loop structure.

Preferably, drive assembly includes driving motor, sprocket, synchronous connecting axle, rigid coupling and sliding bearing seat, driving motor's output fixedly connected with synchronous connecting axle, just a plurality of sprocket has been cup jointed on the synchronous connecting axle, the fixed rigid coupling that has cup jointed of one end of synchronous connecting axle, rigid coupling sets up on sliding bearing seat.

Preferably, the number of the driving assemblies is two, and the two driving assemblies are symmetrically distributed by taking the rigid coupling as a center.

Preferably, two traction chains are arranged on each sliding template, sixteen traction chains are arranged on the single-side eight sliding templates in the longitudinal direction, and the sixteen traction chains are meshed with the chain wheels on the synchronous connecting shafts.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, on the basis of not influencing the whole stress structure of the trolley, the problem of accumulation of bubbles on the surface of the inverted arch concrete is solved to the greatest extent, so that concrete diseases such as honeycombs, pitted surfaces, bubbles and the like are avoided, the concrete construction quality of the needle beam trolley is further improved, and the difficulty and cost of surface treatment of the inverted arch concrete at the later stage are reduced;

the mechanism has the advantages of simplicity, convenience and rapidness in operation, high accuracy and the like, can be operated by only one constructor, can be widely used in various tunnel invert lining constructions, and has a good application prospect.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a side view of the present invention;

FIG. 3 is a detailed structural diagram of the driving assembly of the present invention;

FIG. 4 is a detailed schematic of the draft assembly of the present invention;

FIG. 5 is an enlarged view of a portion of the structure of FIG. 4;

fig. 6 is a detailed structural view of the slide template in the present invention.

In the figure: 1. sliding the template; 2. an arc-shaped track; 3. a traction assembly; 4. a support beam; 5. a guide pulley; 6. an eye bolt; 7. a nut; 8. a drag chain; 9. a drive assembly; 10. a drive motor; 11. a sprocket; 12. a synchronous connecting shaft; 13. a rigid coupling; 14. and (4) sliding the bearing seat.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Referring to fig. 1 to 6, the present invention provides a technical solution: full circle needle beam platform truck invert slipform mechanism of tunnel construction, including a plurality of sliding template 1 and arc track 2, a plurality of sliding template 1 includes a plurality of arc template and a plurality of toper gyro wheel, and a plurality of toper gyro wheel sets up respectively in four corners of arc track 2, and rolls in arc track 2's inside, is provided with respectively on the sliding template 1 and pulls subassembly 3 and drive assembly 9.

In this embodiment, as shown in fig. 1, 2 and 6, the arc rails 2 are welded on the inner sides of the annular arch plates of the trolley bottom arch formworks, one arc rail 2 is installed on each of the left and right sides of each sliding formwork 1, the width of each sliding formwork is 1.1m, the length of each sliding formwork is 1m, eight arc rails are arranged on each side of each sliding formwork according to the length of 12 m of the trolley, and the arc rails 2 are formed by cold bending of channel steel and are guide rails for the movement of the sliding formworks 1.

In this embodiment, as shown in fig. 1, fig. 2, fig. 4 and fig. 5, the traction assembly 3 includes a support beam 4, a guide pulley 5, an eyelet bolt 6, a nut 7 and a traction chain 8, the sliding formwork 1 is fixedly installed with a plurality of support beams 4, the traction chain 8 is hinged on the sliding formwork 1 through a plurality of support beams 4, and two ends of the traction chain 8 are connected with two ends of the sliding formwork 1 through the eyelet bolt 6 and the nut 7 respectively to form a closed loop structure.

In this embodiment, as shown in fig. 1, fig. 2 and fig. 3, the driving assembly 9 includes a driving motor 10, a sprocket 11, a synchronous connecting shaft 12, a rigid coupling 13 and a sliding bearing seat 14, the output end of the driving motor 10 is fixedly connected with the synchronous connecting shaft 12, the synchronous connecting shaft 12 is sleeved with a plurality of sprockets 11, one end of the synchronous connecting shaft 12 is fixedly sleeved with the rigid coupling 13, and the rigid coupling 13 is disposed on the sliding bearing seat 14.

In this embodiment, as shown in fig. 1, 2 and 3, there are two sets of the driving assemblies 9, and the two sets of the driving assemblies 9 are symmetrically distributed around the rigid coupling 13.

In the embodiment, as shown in fig. 1 and fig. 2, two drag chains 8 are arranged on each sliding template 1, sixteen drag chains 8 are arranged on eight sliding templates 1 in the longitudinal direction on one side, and the sixteen drag chains 8 are all meshed with the chain wheel 11 on the synchronous connecting shaft 12.

The use method and the advantages of the utility model are as follows: when the inverted arch slip form mechanism of the tunnel construction full-circle needle beam trolley is used, the working process is as follows:

as shown in fig. 1, 2, 3, 4, 5 and 6, the inverted arch sliding form mechanism is a sliding formwork 1 which is respectively arranged on two sides of the middle part of each inverted arch bottom mold and can slide along a lining profile surface, the width of the sliding formwork 1 is 1.1m, the length of the sliding formwork 1 is 1m, eight sliding formworks are arranged on each side according to the length of 12 m of the trolley, the sliding formwork 1 is hinged with a traction chain 8, and a driving chain wheel 11 is driven by a driving motor 10 to drive the traction chain 8 to move, so that the sliding formwork 1 slides up and down along an arc-shaped track 2.

When the concrete at the bottom of the inverted arch is poured, along with the solidification of the concrete at the bottom of the template, when the concrete at the lower layer of the template reaches an initial setting condition, the driving motor 10 is started to slide the sliding template 1 upwards for a certain distance along the arc-shaped track 2, so that the concrete at the lower layer is exposed, the surface of the sliding template is immediately subjected to plastering treatment, the defects of honeycombs, pitted surfaces, bubbles and the like on the surface are overcome, the surface quality of the concrete is improved, the operation is circulated according to the method until the sliding template 1 slides to the upper part of the open hole of the bottom template, and then the concrete at the edge of the trolley and the top arch of the pin beam can be normally poured.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. Full circle needle beam platform truck invert slipform mechanism of tunnel construction includes a plurality of sliding formwork (1) and arc track (2), its characterized in that: a plurality of sliding template (1) includes a plurality of arc templates and a plurality of toper gyro wheel, a plurality of the toper gyro wheel sets up respectively in four corners of arc track (2), and rolls in the inside of arc track (2), be provided with respectively on sliding template (1) and pull subassembly (3) and drive assembly (9).

2. The inverted arch slip form mechanism of the tunnel construction full-circle needle beam trolley according to claim 1, characterized in that: the arc-shaped rails (2) are welded on the inner sides of the annular arch plates of the trolley bottom arch template, and the arc-shaped rails (2) are respectively installed on the left and the right of each sliding template (1).

3. The inverted arch slip form mechanism of the tunnel construction full-circle needle beam trolley according to claim 1, characterized in that: the traction assembly (3) comprises a support beam (4), a guide pulley (5), an eyelet bolt (6), a nut (7) and a traction chain (8), wherein the support beam (4) is fixedly installed on the sliding template (1), the traction chain (8) is hinged to the sliding template (1) through the support beam (4), and two ends of the traction chain (8) are connected with two ends of the sliding template (1) through the eyelet bolt (6) and the nut (7) respectively to form a closed loop structure.

4. The inverted arch slip form mechanism of the tunnel construction full-circle needle beam trolley according to claim 1, characterized in that: drive assembly (9) are including driving motor (10), sprocket (11), synchronous connecting axle (12), rigid coupling (13) and sliding bearing seat (14), the synchronous connecting axle (12) of output fixedly connected with of driving motor (10), just a plurality of sprocket (11) has been cup jointed on synchronous connecting axle (12), the fixed cup joint of one end of synchronous connecting axle (12) has rigid coupling (13), rigid coupling (13) set up on sliding bearing seat (14).

5. The inverted arch slip form mechanism of the tunnel construction full-circle needle beam trolley according to claim 4, characterized in that: the number of the driving assemblies (9) is two, and the two driving assemblies (9) are symmetrically distributed by taking the rigid coupling (13) as a center.

6. The inverted arch slip form mechanism of the tunnel construction full-circle needle beam trolley according to claim 1, characterized in that: every be provided with two drive chains (8) on sliding template (1), and the vertical eight of unilateral sliding template (1) arranges sixteen drive chains (8) altogether, and sixteen drive chains (8) all mesh with sprocket (11) on synchronous connecting axle (12).