CN209430213U - An eccentric hydraulic formwork trolley for the construction of cast-in-place driveway slabs in shield tunnels - Google Patents

Abstract

The utility model provides a kind of weighting hydraulic template trolley for the cast-in-place lane plate construction of shield tunnel, comprising: carriageway plate template, armpit Angle formwork, cross form telescopic device, vertical walking beam, ballast box, cross-brace connecting shaft and oblique template telescopic device；The lower part of carriageway plate template is provided with cross-brace beam, and first longitudinal direction supporting beam and second longitudinal direction supporting beam are connected between carriageway plate template and cross-brace beam；Vertical walking beam first end and ballast box first end are connect with cross-brace beam respectively, and vertical walking beam and ballast box extend to far from carriageway plate template side；Bracket is avoided to pacify the long working torn open, reduce materials dumping number, improves shield tunnel internal structure construction efficiency, greatly alleviate traffic pressure in construction period hole, it ensure that shield driving transport of materials, realize the synchronous construction of internal structure and shield driving.

Description

An eccentric hydraulic formwork trolley for the construction of cast-in-place driveway slabs in shield tunnels

technical field

The utility model relates to the technical field of shield tunneling, in particular to an overweight hydraulic formwork trolley used for the construction of cast-in-place driveway slabs in shield tunnels.

Background technique

In recent years, a large number of cross-river shield tunnels have been constructed in my country. During the excavation and construction of large-scale shield machines, the construction is usually synchronized with the internal structure of the tunnel. The driveway slabs in the internal structure mostly adopt the process of prefabricated middle box culvert and cast-in-place driveway slabs on both sides. Among them, the prefabricated middle box culvert is installed simultaneously with the shield excavation construction, the installation process is relatively mature, and the construction efficiency is high. The driveway slabs on both sides are mostly constructed using the traditional support method. Due to factors such as long erection and dismantling periods, limited construction space, and inconvenient material transportation, the construction progress is slow. The construction of material transportation, vehicle staggering, and relay pump installation is limited, and the overall construction period of the shield tunnel is restricted. In addition, the bracket method uses a small formwork assembly process, which makes it difficult to control the quality of the bracket and formwork installation, and it is difficult to guarantee the construction quality of the driveway slab.

Contents of the invention

In order to overcome the deficiencies in the above-mentioned prior art, the utility model designs a heavy automatic hydraulic formwork trolley for the construction of the small space of the cast-in-place driveway slab in the shield tunnel, which has achieved good results and is a great contribution to the safety of the shield tunnel. , Rapid construction provides a strong guarantee,

The utility model comprises: a roadway slab formwork, an armpit formwork, a horizontal formwork telescopic device, a vertical walking beam, a counterweight box, a lateral support shaft and an oblique formwork telescopic device;

The first end of the driveway slab formwork is connected to the first end of the axillary corner formwork; the lower part of the driveway slab formwork is provided with a transverse support beam, and the first longitudinal support beam and the second longitudinal support beam are connected between the driveway slab formwork and the transverse support beam beam;

The telescopic end of the horizontal formwork expansion device is connected to the first longitudinal support beam, and the fixed end of the horizontal formwork expansion device is connected to the upper surface of the horizontal support beam through a fixed support;

The first end of the vertical walking beam and the first end of the counterweight box are respectively connected to the horizontal support beam, and the vertical walking beam and the counterweight box extend to the side away from the formwork of the roadway slab;

The first end of the lateral support shaft is connected to the first connection position of the vertical walking beam;

The first end of the inclined formwork expansion device is connected to the second connection position of the vertical walking beam;

The second end of the horizontal support shaft and the second end of the diagonal formwork telescopic device are respectively connected to the second end of the axillary formwork;

The second end of the vertical walking beam and the second end of the counterweight box are respectively connected to the inner wall of the shield tunnel.

Preferably, a first traveling track is connected between the second end of the vertical traveling beam and the inner wall of the shield tunnel.

Preferably, a second running track is connected between the second end of the counterweight box and the inner wall of the shield tunnel.

Preferably, the transverse formwork telescopic device is arranged between the first longitudinal support beam and the second longitudinal support beam.

Preferably, it also includes: a transverse support link;

The first end of the horizontal support link is connected with the counterweight box, and the second end of the transverse support link is connected with the third connection position of the vertical walking beam.

Preferably, the cross-section of the axillary formwork is a C-shaped structure;

The first end of the driveway slab template is connected to the first end of the axillary corner template through a pin;

The second end of the axillary formwork is provided with an axillary connection seat, and the second end of the transverse support shaft and the second end of the diagonal formwork expansion device are respectively connected to the axillary connection seat.

Preferably, a reinforcement is provided on the transverse support beam close to the connection position with the second longitudinal support beam;

The transverse support beam is made of I-beam.

Preferably, a cast-in-place slab is installed on the upper part of the driveway slab template.

Preferably, the vertical walking beam is not of the same height as the counterweight box.

As can be seen from the above technical solutions, the utility model has the following advantages:

The utility model adopts a modern full-automatic hydraulic formwork system to replace the traditional formwork support system, and realizes the rapid and cyclic construction of the cast-in-place driveway slab structure of the shield tunnel. Through process improvement, the long-term operation of bracket installation and dismantling is avoided, the number of times of material reverse transportation is reduced, the construction efficiency of the internal structure of the shield tunnel is improved, the traffic pressure in the tunnel is greatly relieved during the construction period, and the transportation of shield tunneling materials is ensured. The simultaneous construction of the internal structure and shield tunneling is guaranteed.

Description of drawings

In order to illustrate the technical solution of the utility model more clearly, the accompanying drawings that need to be used in the description will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the utility model. Ordinary technicians can also obtain other drawings based on these drawings on the premise of not paying creative work.

Fig. 1 is a cross-sectional view of an overweight hydraulic formwork trolley used for the construction of cast-in-place driveway slabs in shield tunnels;

Fig. 2 is a cross-sectional view of the demolition of the heavy hydraulic formwork trolley used for the construction of the cast-in-place driveway slab of the shield tunnel.

Detailed ways

The utility model provides a heavy-duty hydraulic formwork trolley for the construction of cast-in-place driveway slabs in shield tunnels, as shown in Figures 1 and 2, comprising: driveway slab formwork 1, armpit formwork 2, and transverse formwork telescopic device 3 , a vertical walking beam 8, a counterweight box 9, a lateral support shaft 6 and an oblique formwork telescopic device 7; the first end of the driveway slab formwork 1 is connected to the first end of the axillary corner formwork 2; the lower part of the driveway slab formwork 1 is set There is a transverse support beam 5, and a first longitudinal support beam 11 and a second longitudinal support beam 4 are connected between the carriageway slab formwork 1 and the transverse support beam 5; The fixed end of the horizontal formwork expansion device 3 is connected to the upper surface of the horizontal support beam 5 through the fixed support 12; The counterweight box 9 extends away from the side of the roadway slab formwork 1; the first end of the lateral support shaft 6 is connected to the first connection position of the vertical walking beam 8; the first end of the inclined formwork telescopic device 7 is connected to the vertical walking beam 8 The second connection position is connected; the second end of the horizontal support shaft 6 and the second end of the diagonal formwork telescopic device 7 are respectively connected to the second end of the axillary formwork 2; the second end of the vertical walking beam 8 and the counterweight box 9 The second ends are respectively connected to the inner wall of the shield tunnel.

Spatially relative terms for convenience of description, such as "under", "under", "lower", "above", "above", etc. may be used herein to describe the relationship between one element or feature and another as shown in the figures. A relationship between components or features. It will be understood that spatially relative terms are intended to encompass different orientations of the device in use or operation other than the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. Other orientations (rotated 90 degrees or otherwise) may be used for the device, and the spatially relative terms used herein interpreted accordingly.

The terms "first", "second", "third" and "fourth" in the specification and claims of the present utility model and the above drawings are used to distinguish similar objects if they exist, but not necessarily for description A particular order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein can be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusive inclusion.

In the present utility model, a first traveling track 10 is connected between the second end of the vertical traveling beam 8 and the inner wall of the shield tunnel. A second running track 14 is connected between the second end of the counterweight box 9 and the inner wall of the shield tunnel. The transverse formwork telescopic device 3 is arranged between the first longitudinal support beam 11 and the second longitudinal support beam 4 .

In the utility model, it also includes: a transverse support link 13; the first end of the transverse support link 13 is connected to the counterweight box 9, and the second end of the transverse support link 13 is connected to the third connection position of the vertical walking beam 8.

In the utility model, the cross section of the axillary formwork 2 is a C-shaped structure; the first end of the driveway slab formwork 1 is connected to the first end of the axillary formwork 2 through a pin shaft; the second end of the axillary formwork 2 is provided with an axillary connection seat , the second end of the lateral support shaft 6 and the second end of the oblique formwork telescopic device 7 are respectively connected to the axillary angle connecting seat.

In the utility model, a reinforcement 19 is provided on the transverse support beam 5 close to the connection position with the second longitudinal support beam 4; the transverse support beam 5 is made of I-shaped steel.

A cast-in-place plate 16 is installed on the top of the driveway slab template 1 . The vertical walking beam 8 is not equal to the counterweight box 9.

The utility model solves the problem of rapid construction of cast-in-place lane slabs in a shield tunnel in a small space. Solve the problem of uncontrollable construction quality of traditional support method.

In a preferred manner, the fully automatic hydraulic formwork of the present invention is mainly analyzed and studied from several aspects such as the overall formwork walking system, formwork hydraulic system, and overall force analysis of the formwork. Drawing on the structure of traditional formwork trolleys, the design length of a single-section trolley is 10m, which can meet the construction of the inner structure of the tunnel with a turning radius greater than 600m. Each trolley is equipped with four motors with a power of 2.2kw, together with the reduction box, traveling wheels and traveling tracks to form a walking system, which meets the requirements for walking within the longitudinal slope of the tunnel within 4.5%. The hydraulic system mainly realizes the expansion and contraction of the formwork of the trolley through the hydraulic cylinder, and the maximum expansion and contraction is designed to be 15cm to meet the construction requirements of formwork reinforcement and dismantling. The overall formwork mainly adopts the longitudinal force main beam and the transverse support beam to form a frame force system. The maximum load is 15kN/㎡, which meets the construction load requirements. Since shield tunnels are mostly circular structures, in order to ensure the normal travel of formwork trolleys, a double-track design with unequal heights is adopted, in which the track spacing is 0.9m and the track height difference is 0.5m. Each trolley is equipped with 4 counterweight boxes with a weight of 2.5t, which solves the phenomenon that the trolley is biased in the process of walking. After the coordination and combination of various systems, a complete active system is formed, which ensures the feasibility of the construction of the fully automatic hydraulic formwork trolley.

Wherein, the horizontal formwork telescopic device is a hydraulic oil cylinder. The driveway slab formwork and the axillary formwork are connected by pins with a diameter of 1cm, and are effectively connected with the horizontal formwork telescopic device to realize the automatic expansion and contraction effect of the formwork. The longitudinal support beam adopts I-beams and transverse support beams to form a formwork support system to meet the needs of concrete pouring.

The vertical walking beam, the counterweight box, and the driving track form the traveling system of the trolley, which is powered by a 2.2kw motor and a gearbox to realize the overall movement of the demolition.

Through the on-site construction of the utility model, the high-efficiency and high-quality construction characteristics of the lining trolley are fully utilized, the unfavorable factors of small space and unilateral support are overcome, the construction progresses smoothly, and the construction quality is excellent.

The above description of the disclosed embodiments enables those skilled in the art to realize or use the utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1. a kind of weighting hydraulic template trolley for the cast-in-place lane plate construction of shield tunnel characterized by comprising runway Template die plate (1), armpit Angle formwork (2), cross form telescopic device (3), vertical walking beam (8), ballast box (9), cross-brace connect Axis (6) and oblique template telescopic device (7)；

Carriageway plate template (1) first end is connect with armpit Angle formwork (2) first end；The lower part of carriageway plate template (1) is provided with Cross-brace beam (5) is connected with first longitudinal direction supporting beam (11) and between carriageway plate template (1) and cross-brace beam (5) Two longitudinal support beams (4)；

Cross form telescopic device (3) telescopic end is connected in first longitudinal direction supporting beam (11), cross form telescopic device (3) is fixed The upper surface that end passes through hold-down support (12) connection cross-brace beam (5)；

Vertical walking beam (8) first end and ballast box (9) first end are connect with cross-brace beam (5) respectively, vertical walking beam (8) Extend with ballast box (9) to far from carriageway plate template (1) side；

The first end of cross-brace connecting shaft (6) is connect with vertical (8) first connection position of walking beam；

The first end of oblique template telescopic device (7) is connect with vertical (8) second connection position of walking beam；

The second end of cross-brace connecting shaft (6) and the second end of oblique template telescopic device (7) respectively with armpit Angle formwork (2) second End connection；

Vertical walking beam (8) second end and ballast box (9) second end are separately connected shield tunnel inner wall.

2. weighting hydraulic template trolley according to claim 1, which is characterized in that

The first walking track (10) is connected between vertical walking beam (8) second end and shield tunnel inner wall.

3. weighting hydraulic template trolley according to claim 1, which is characterized in that

The second walking track (14) is connected between ballast box (9) second end and shield tunnel inner wall.

4. weighting hydraulic template trolley according to claim 1, which is characterized in that

Cross form telescopic device (3) is arranged between first longitudinal direction supporting beam (11) and second longitudinal direction supporting beam (4).

5. weighting hydraulic template trolley according to claim 1, which is characterized in that

Further include: cross-brace connecting rod (13)；

Cross-brace connecting rod (13) first end is connect with ballast box (9), cross-brace connecting rod (13) second end and vertical walking beam (8) third connection position connects.

6. weighting hydraulic template trolley according to claim 1, which is characterized in that

Armpit Angle formwork (2) cross section is C-shaped configuration；

Carriageway plate template (1) first end is connect with armpit Angle formwork (2) first end by pin shaft；

Armpit Angle formwork (2) second end is equipped with armpit angle attachment base, the second end of cross-brace connecting shaft (6) and oblique template telescopic device (7) second end is connect with armpit angle attachment base respectively.

7. weighting hydraulic template trolley according to claim 1, which is characterized in that

It is close on cross-brace beam (5) to be equipped with reinforcer (19) with second longitudinal direction supporting beam (4) link position；

Cross-brace beam (5) is made of I-steel.

8. weighting hydraulic template trolley according to claim 1, which is characterized in that

The top of carriageway plate template (1) is equipped with Bars In Poured Concrete Slab (16).

9. weighting hydraulic template trolley according to claim 1, which is characterized in that

Vertical walking beam (8) and ballast box (9) be not contour.