CN217440049U

CN217440049U - Tunnel secondary lining trolley capable of automatically heating

Info

Publication number: CN217440049U
Application number: CN202220966445.5U
Authority: CN
Inventors: 王帅帅; 李小桐; 吴江; 刘斌
Original assignee: CCCC Second Highway Engineering Co Ltd
Current assignee: CCCC Second Highway Engineering Co Ltd
Priority date: 2022-04-25
Filing date: 2022-04-25
Publication date: 2022-09-16
Anticipated expiration: 2032-04-25

Abstract

The utility model belongs to the technical field of tunnel maintenance, in particular to two lining platform trucks in tunnel and tunnel heating maintenance method that can self-heating. The utility model provides a two lining platform trucks in tunnel that can self-heating, including two lining platform truck main parts, install the automatic pressure boost hot water circulation device on two lining platform truck main part frames, a controller, the frame outside of two lining platform truck main parts is equipped with two lining platform truck templates with tunnel profile assorted, the outside surface of two lining platform truck templates is equipped with the heat preservation, be equipped with the hot-water line between two lining platform truck templates and the heat preservation, automatic pressure boost hot water circulation device passes through the data line with the controller and is connected, the automatic pressure boost hot water circulation device of controller control provides circulation hot water for the hot-water line, carry out the heat preservation operation to two lining platform truck templates. The utility model discloses a set up heat preservation and hot water pipeline on the outside surface of two lining platform truck templates, can realize concrete placement and heating maintenance integration, reduce equipment input, utilize the site operation, reduce construction cost.

Description

Tunnel secondary lining trolley capable of automatically heating

Technical Field

The utility model belongs to the technical field of the tunnel maintenance, in particular to but two lining platform trucks in self-heating's tunnel.

Background

At present, the curing of the secondary lining concrete of the tunnel in China generally adopts natural curing, water spray (fog) curing and other curing modes, the curing modes are greatly influenced by the environmental temperature and human interference, the curing effect is unstable, and the heat-preservation and moisture-preservation curing conditions are difficult to realize. In recent years, along with the continuous improvement of people to the early maintenance importance of concrete, especially research discovery is through early heating concrete maintenance, can improve concrete strength and quality, for the maintenance problem of solving two lining concretes, has appeared through intelligent maintenance platform truck, mainly through steam health preserving + enclosure space's mode, realizes the constant temperature and humidity maintenance to lining concrete. But the mode that adopts intelligent maintenance platform truck has not only increased the construction cost input, follows closely the two lining platform trucks rear moreover, has occupied the tunnel originally just with limited space, influences two lining platform trucks and pours, is unfavorable for the site operation.

Researches show that 24 hours after concrete pouring is the best period for concrete strength increase, at the moment, heating curing can be adopted to obviously improve the concrete strength and quality, but because of the influence of the form removal time of the two-lining trolley, the concrete heating heat preservation curing is difficult to carry out, the site is carried out after the form removal and the displacement of the two-lining trolley, the time is often more than 24 hours after the concrete pouring is finished, and the best heating curing period is missed.

Disclosure of Invention

In view of the above problem, the utility model aims at providing a two lining platform trucks in tunnel and tunnel heating maintenance method that can self-heating, can real-time detection concrete temperature to adjust the maintenance temperature, ensure that template temperature and concrete temperature are at the settlement within range, reduce the concrete fracture risk, improve the concrete strength, realize concrete placement and heating maintenance integration, reduce the equipment input, utilize the site operation, reduce construction cost.

The technical scheme of the utility model lies in: the tunnel two-lining trolley capable of automatically heating comprises a two-lining trolley main body, an automatic pressurizing hot water circulating device and a controller, wherein the automatic pressurizing hot water circulating device and the controller are installed on a frame of the two-lining trolley main body, a two-lining trolley template matched with a tunnel profile is arranged on the outer side of the frame of the two-lining trolley main body, the two-lining trolley template is movably connected with the two-lining trolley main body through a plurality of hydraulic jacks, a heat insulating layer is arranged on the outer side surface of the two-lining trolley template, a hot water pipeline is arranged between the two-lining trolley template and the heat insulating layer, the hot water pipeline is connected with the automatic pressurizing hot water circulating device, the automatic pressurizing hot water circulating device is connected with the controller through a data line, and the controller controls the automatic pressurizing hot water circulating device to provide circulating hot water for the hot water pipeline to perform heat insulating operation on the two-lining trolley template.

The hot water pipeline comprises a plurality of groups of annular heating pipes, longitudinal heating pipes and longitudinal water return pipes, the plurality of groups of annular heating pipes are uniformly distributed along the annular direction of the tunnel outside the two lining trolley templates, each group of annular heating pipes is connected with one end of each longitudinal heating pipe and one end of each longitudinal heating pipe is connected with the corresponding longitudinal water return pipe, the annular heating pipes are in a spiral line shape or a continuous U shape, and the longitudinal heating pipes and the longitudinal water return pipes are respectively arranged at the bottoms of the two sides of the tunnel trolley and are parallel to the axis of the tunnel.

The outer side of the two-lining trolley template is radially provided with a plurality of temperature sensors, and the temperature sensors are connected with the controller through data lines.

The temperature sensors are divided into three groups, wherein one group of temperature sensors is positioned in the center of the top of the arch of the two-lining trolley template, and the other two groups of temperature sensors are respectively positioned on two sides of the arch of the two-lining trolley template.

The automatic pressurization hot water circulating device comprises a main water inlet pipe, a pressurization part, a heating part and a hot water outlet pipe which are sequentially connected, a main water inlet valve is arranged on a pipeline between the main water inlet pipe and the pressurization part, a water temperature sensor and a pressure sensor are arranged on a pipeline between the hot water outlet pipe and the heating part, and the water temperature sensor and the pressure sensor are respectively connected with the controller through data lines.

The water inlet of the hot water pipeline is connected with the hot water outlet pipe, the water outlet of the hot water pipeline is connected with the pipeline of the water inlet of the pressurizing part, and a one-way valve is arranged on the pipeline at the joint of the water outlet of the hot water pipeline and the pipeline of the water inlet of the pressurizing part.

The pipeline material of the hot water pipeline adopts a flexible pipe material.

The technical effects of the utility model reside in that: 1. the utility model has the advantages that the heat preservation layer and the hot water pipeline are arranged on the outer side surface of the two-lining trolley template, so that the problem that the traditional curing mode cannot increase the curing effect on the early strength of the concrete is solved, the golden time before the template is removed after the concrete is poured can be fully utilized, and the early strength and quality of the concrete are improved; 2. the utility model makes up the defects that the prior two-lining trolley has single use and can not take heating and heat-preserving measures for two-lining concrete, and can automatically adjust the water temperature and the flow according to the temperature change of the concrete, ensure the temperature difference of concrete curing within a set range, reduce the cracking risk of the concrete, realize automatic heating and curing, and is simple and convenient; 3. the utility model discloses can realize that concrete early strength improves before the form removal, ensure the concrete quality, can practice thrift constant temperature and humidity maintenance platform truck and drop into, reduce tunnel space and occupy, improve and pour the work efficiency.

The following will be further described with reference to the accompanying drawings.

Drawings

Fig. 1 is a front cross-sectional view of a tunnel two-lining trolley structure capable of automatically heating according to an embodiment of the present invention.

Fig. 2 is a side cross-sectional view of a tunnel two-lining trolley structure capable of automatically heating according to an embodiment of the present invention.

Fig. 3 is a control flow chart of an automatic pressurizing hot water circulating device of a tunnel secondary lining trolley capable of automatically heating according to an embodiment of the present invention.

Fig. 4 is a control flow chart between the water temperature sensing device, the pressure sensing device and the controller of the tunnel two-lining trolley capable of automatically heating according to the embodiment of the present invention.

Reference numerals: 1. A secondary liner trolley main body; 2. a hot water pipeline; 3. a heat-insulating layer; 4. a temperature sensor; 5. an automatic pressurizing hot water circulating device; 6. a controller; 7. two lining trolley templates; 8. a hydraulic jack; 9-a ventilation pipe; 21. a circumferential heating pipe; 22. a longitudinal heating tube; 51. a main water inlet pipe; 52. a hot water outlet pipe; 53. a heating section; 54. a pressurization part; 511. a main water inlet valve; 521. a one-way valve; 531. a water temperature sensor; 541. a pressure sensor.

Detailed Description

Example 1

As shown in fig. 1 and 2, a tunnel two-lining trolley capable of automatically heating comprises a two-lining trolley main body 1, an automatic pressurized hot water circulating device 5 and a controller 6, wherein the automatic pressurized hot water circulating device 5 and the controller 6 are installed on a frame of the two-lining trolley main body 1, a two-lining trolley template 7 matched with a tunnel profile is arranged on the outer side of the frame of the two-lining trolley main body 1, the two-lining trolley template 7 is movably connected with the two-lining trolley main body 1 through a plurality of hydraulic jacks 8, an insulating layer 3 is arranged on the outer side surface of the two-lining trolley template 7, a hot water pipeline 2 is arranged between the two-lining trolley template 7 and the insulating layer 3, the hot water pipeline 2 is connected with the automatic pressurized hot water circulating device 5, the automatic pressurized hot water circulating device 5 is connected with the controller 6 through a data line, the controller 6 controls the automatic pressurized hot water circulating device 5 to provide circulating hot water for the hot water pipeline 2, and carrying out heat preservation operation on the two-lining trolley template 7.

In the practical use process, the heat preservation layer 3 and the hot water pipeline 2 are arranged on the outer side surface of the two-lining trolley template 7, so that the problem that the traditional curing mode cannot increase the early curing effect on the strength of concrete is solved, the golden time before the template is removed after the concrete is poured can be fully utilized, and the early strength and quality of the concrete are improved; be provided with the display instrument on the controller for data such as show hot water temperature, hot water pressure, template temperature and two lining concrete temperatures can be according to temperature and the flow of concrete temperature change automatically regulated automatic boost hot water circulating device 5, ensure that the concrete maintenance difference in temperature reduces the concrete risk of splitting in the settlement within range, realize the self-heating maintenance, and is simple and convenient, the utility model discloses can realize that concrete early strength improves before the form removal, ensure the concrete quality, can practice thrift constant temperature and humidity maintenance platform truck and drop into, reduce the tunnel space and occupy, improve and pour the work efficiency.

Example 2

Preferably, on the basis of embodiment 1, as shown in fig. 2, in this embodiment, the hot water pipeline 2 includes multiple groups of circumferential heating pipes 21, longitudinal heating pipes 22 and longitudinal water returning pipes 23, the multiple groups of circumferential heating pipes 21 are uniformly arranged outside the two lining trolley templates 7 along a circumferential direction of the tunnel, one end of each group of circumferential heating pipes 21 is connected to the longitudinal heating pipe 22, and the other end is connected to the longitudinal water returning pipe 23, the circumferential heating pipes 21 are shaped as "helical lines" or "continuous U-shaped", and the longitudinal heating pipes 22 and the longitudinal water returning pipes 23 are respectively arranged at bottoms of two sides of the tunnel trolley and are parallel to an axis of the tunnel.

In the use process, hot-water line 2 includes multiunit hoop heating pipe 21, vertical heat supply pipe 22 and vertical wet return 23, multiunit hoop heating pipe 21 is evenly laid along the tunnel hoop two lining platform truck templates 7 outsides, hoop heating pipe 21's shape is "helix" or "continuous U type". The hot water pipeline 2 is uniformly arranged on the two-lining trolley template 7 through a plurality of groups of annular heating pipes 21, the contact area between the heating pipes and the two-lining trolley template 7 is increased by the spiral line or continuous U-shaped annular heating pipes 21, the hot water flow speed in the heating pipes is reduced, and the heat preservation effect on the two-lining trolley template 7 is ensured.

Example 3

Preferably, in addition to embodiment 1 or embodiment 2, in this embodiment, a plurality of temperature sensors 4 are radially provided on the outer side of the two-lining trolley template 7, and the temperature sensors 4 are connected to the controller 6 through data lines.

In the use process, the utility model discloses in the concrete is directly buried to temperature sensor 4, through data line and 6 lug connection of controller, can two lining concrete temperatures of real-time detection to can convey controller 6 with the detection data.

Example 4

Preferably, on the basis of embodiment 1, embodiment 2, or embodiment 3, in this embodiment, the temperature sensors 4 are divided into three groups, one group of temperature sensors is located in the center of the top of the arch of the two lining trolley templates 7, and the other two groups of temperature sensors are located on two sides of the arch of the two lining trolley templates 7 respectively.

In the in-service use process, temperature sensor 4 divides into three groups, and one of them a set of temperature sensor is located 7 arch top central authorities of two lining platform truck templates, all the other two sets of being located respectively 7 arch both sides of two lining platform truck templates, the whole two lining concrete temperature of detection that can be accurate in real time ensure to carry out the maintenance under the settlement temperature, guarantee concrete maintenance quality.

Example 5

Preferably, in addition to embodiment 1 or embodiment 2 or embodiment 3 or embodiment 4, in this embodiment, as shown in fig. 3 and fig. 4, the automatic pressurized hot water circulation device 5 includes a main water inlet pipe 51, a pressurizing part 54, a heating part 53, and a hot water outlet pipe 52 that are sequentially connected, a main water inlet valve 511 is disposed on a pipe between the main water inlet pipe 51 and the pressurizing part 54, a water temperature sensor 531 and a pressure sensor 541 are disposed on a pipe between the hot water outlet pipe 52 and the heating part 53, and the water temperature sensor 531 and the pressure sensor 541 are respectively connected to the controller 6 through data lines.

In the use process, the utility model discloses automatic 5 accessible heating portions 53 of pressure boost hot water circulating device and pressure boost portion 54 supply to hot water pipe 2 area hot water, realize carrying out direct circulation heating to the platform truck template, temperature sensor 531, pressure sensor 541 respectively through the data line with controller 6 connects, can real-time detection hot water temperature and water pressure to can convey controller 6 with detecting data, ensure that temperature and water pressure satisfy the maintenance requirement.

Example 6

Preferably, on the basis of embodiment 1 or embodiment 2 or embodiment 3 or embodiment 4 or embodiment 5, in this embodiment, the water inlet of the hot water pipeline 2 is connected to the hot water outlet pipe 52, the water outlet is connected to the pipeline of the water inlet of the pressurization part 54, and a check valve 521 is arranged on the pipeline at the connection position of the water outlet of the hot water pipeline 2 and the pipeline of the water inlet of the pressurization part 54.

In the use, hot-water line 2 delivery port with be equipped with check valve 521 on the pipeline of the pipe connection department of pressurization portion 54 water inlet, can realize that the hot water circulation in the hot-water line 2 gets into automatic pressure boost hot water circulating device 5, improves heat utilization efficiency, practices thrift the cost.

Example 7

Preferably, on the basis of embodiment 1, in this embodiment, a flexible pipe material is used as the pipe material of the hot water pipeline 2.

In the in-service use process, heating line 2 adopt flexible tube material, for example plastic hose, platform truck from the top down layering is arranged, arranges at 7 surface curves of two lining platform truck templates, realizes the purpose to 7 even heating of two lining platform truck templates.

A use method of a tunnel secondary lining trolley capable of automatically heating comprises the following steps:

s1: after the tunnel secondary lining trolley capable of automatically heating is in place, positioning a secondary lining trolley template 7 through a hydraulic jack 8 according to construction requirements, then pouring concrete, and embedding the temperature sensors 4 radially arranged on the outer side of the secondary lining trolley template 7 in the concrete;

s2: after concrete pouring is finished, the maintenance of the concrete of the tunnel secondary lining is directly carried out without form removal operation, and the concrete process is as follows: the controller 6 automatically judges whether the temperature is in a deviation range set by the detection temperature of the second liner concrete according to the concrete temperature detected by the temperature sensor 4, if the detected temperature is lower than the set minimum negative deviation value of the temperature of the second liner concrete, the controller 6 controls the heating part 53 of the automatic pressurizing hot water circulating device 5 to start working, the hot water of the hot water pipeline 2 is heated, and the concrete is heated and cured; if the detected concrete temperature reaches the maximum positive deviation value of the set secondary lining concrete detection temperature, the controller 6 controls the heating part 53 of the automatic pressurizing hot water circulating device 5 to stop working, hot water of the hot water pipeline 2 circulates normally, and heat preservation and maintenance are carried out on the concrete;

s3: after the concrete heating, heat preservation and maintenance are completed, the hydraulic jack 8 withdraws the two-lining trolley template 7 to complete the pouring of the tunnel two-lining concrete, and the tunnel two-lining trolley capable of automatically heating shifts other working faces.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention.

Claims

1. The utility model provides a two lining platform trucks in tunnel that can self-heating which characterized in that: the hot water circulation system comprises two lining trolley main bodies (1), and an automatic pressurizing hot water circulation device (5) and a controller (6) which are installed on a frame of the two lining trolley main bodies (1), wherein two lining trolley templates (7) matched with the contour of a tunnel are arranged on the outer side of the frame of the two lining trolley main bodies (1), the two lining trolley templates (7) are movably connected with the two lining trolley main bodies (1) through a plurality of hydraulic jacks (8), a heat insulation layer (3) is arranged on the outer side surface of each two lining trolley template (7), a hot water pipeline (2) is arranged between each two lining trolley template (7) and the heat insulation layer (3), the hot water pipeline (2) is connected with the automatic pressurizing hot water circulation device (5), the automatic pressurizing hot water circulation device (5) is connected with the controller (6) through a data line, the controller (6) controls the automatic pressurizing hot water circulation device (5) to provide circulating hot water for the hot water pipeline (2), and carrying out heat preservation operation on the two-lining trolley template (7).

2. The auto-heatable tunnel secondary lining trolley according to claim 1, wherein: hot-water line (2) include multiunit hoop heating pipe (21), vertical heat supply pipe (22) and vertical wet return (23), multiunit hoop heating pipe (21) are evenly laid along the tunnel hoop two lining platform truck template (7) outsides, every group hoop heating pipe (21) one end with vertical heat supply pipe (22) are connected, one end with vertical wet return (23) are connected, the shape of hoop heating pipe (21) is "helix" or "continuous U type", vertical heat supply pipe (22) and vertical wet return (23) are arranged respectively in tunnel platform truck both sides bottom, are parallel with the tunnel axis.

3. The auto-heatable tunnel secondary lining trolley according to claim 1, wherein: the outer side of the two-lining trolley template (7) is radially provided with a plurality of temperature sensors (4), and the temperature sensors (4) are connected with the controller (6) through data lines.

4. The auto-heatable tunnel secondary lining trolley according to claim 3, wherein: the temperature sensors (4) are divided into three groups, wherein one group of temperature sensors are located in the center of the top of the arch of the two-lining trolley template (7), and the other two groups of temperature sensors are located on two sides of the arch of the two-lining trolley template (7) respectively.

5. The auto-heatable tunnel secondary lining trolley according to claim 1, wherein: automatic pressure boost hot water circulating device (5) are including total inlet tube (51), pressure boost portion (54), heating portion (53), hot water outlet pipe (52) that connect gradually, be equipped with total water intaking valve (511) on the pipeline between total inlet tube (51), pressure boost portion (54), hot water outlet pipe (52) with be equipped with temperature sensor (531), pressure sensor (541) on the pipeline between heating portion (53), temperature sensor (531), pressure sensor (541) respectively through the data line with controller (6) are connected.

6. The auto-heatable tunnel secondary lining trolley according to claim 5, wherein: the water inlet of the hot water pipeline (2) is connected with the hot water outlet pipe (52), the water outlet of the hot water pipeline is connected with the pipeline of the water inlet of the pressurizing part (54), and a one-way valve (521) is arranged on the pipeline at the joint of the water outlet of the hot water pipeline (2) and the pipeline of the water inlet of the pressurizing part (54).

7. The auto-heatable tunnel secondary lining trolley according to claim 1, wherein: the pipeline material of the hot water pipeline (2) adopts a flexible pipe material.