Secondary lining trolley template positioning and displacement monitoring system

Abstract

The invention discloses a secondary lining trolley template positioning and displacement monitoring system, which relates to the field of tunnel construction equipment, and comprises a first displacement sensor arranged at the top of a rear end top template of a secondary lining trolley, a second displacement sensor arranged at the side part of a rear end template of the secondary lining trolley, and a controller, the first displacement sensor is used for measuring the distance between the top of a secondary lining trolley template and the top of a lining surface, the second displacement sensor is used for measuring the distance between the side part of the secondary lining trolley template and the side part of the lining surface, and the controller receives real-time data of the displacement sensors and outputs a control instruction through a preset control program. The secondary lining trolley has the high-precision positioning and displacement monitoring functions, and formwork shifting and slab staggering caused by pouring overload and too large stress difference of formworks on the two sides of the secondary lining trolley are avoided.

Description

Technical Field

[0001] The invention relates to the field of tunnel construction equipment, in particular to a secondary lining trolley template positioning and displacement monitoring system. Background Art

[0002] The secondary lining trolley is a special equipment for the secondary lining in the tunnel construction process. With the emergence of various new technologies, the requirements for the trolley are getting higher and higher. Informatization is an important direction for the development of trolleys. Informatization can reduce the accident rate, discover and solve problems in advance, and provide complete report support.

[0003] At present, the information system of the secondary lining trolley mainly includes an attached vibration system, an inserted vibration system, an anti-top cracking system, an anti-emptying system, a video monitoring system, etc., which greatly improves the automation level of the secondary lining trolley. However, the template positioning of the secondary lining trolley is still mainly carried out by the observer directing the operator to perform the template positioning operation. Some manufacturers have added a travel switch to the anti-top cracking system, and the system reminds when the template is in place. However, due to the large mass of the secondary lining trolley, the secondary lining trolley still has a large inertia after the template is in place, which can easily damage the poured concrete and the travel switch. Some other manufacturers use laser ranging, but there are problems such as millimeter-level error in accuracy and easy obstruction by concrete. In addition, there is currently no effective monitoring method for the displacement of the secondary lining trolley during construction to detect the displacement of the trolley during pouring. The different pouring heights of concrete on both sides result in different forces on the template, which often leads to mold running and misalignment.

[0004] In view of the above reasons, it is necessary to develop a second lining trolley template positioning and displacement monitoring system with high-precision positioning and displacement monitoring functions to avoid the occurrence of mold running and misalignment due to pouring overload and excessive force difference on the templates on both sides of the second lining trolley. Summary of the invention

[0005] The purpose of the present invention is to provide a second lining trolley template positioning and displacement monitoring system, which has high-precision positioning and displacement monitoring functions to avoid the occurrence of mold running and misalignment due to pouring overload and excessive force difference on the templates on both sides of the second lining trolley.

[0006] To achieve the above object, the present invention provides the following technical solutions: A secondary lining trolley template positioning and displacement monitoring system comprises a first displacement sensor arranged at the top of the rear end top mold of the secondary lining trolley, a second displacement sensor arranged at the side of the rear end template of the secondary lining trolley, and a controller, wherein the first displacement sensor is used to measure the distance between the top of the secondary lining trolley template and the top of the lining surface, and the second displacement sensor is used to measure the distance between the side of the secondary lining trolley template and the side of the lining surface, and the controller receives real-time data of the first displacement sensor and the second displacement sensor, and outputs control instructions through a preset control program.

[0007] Preferably, the second lining trolley template positioning and displacement monitoring system further comprises an inclination sensor, which is mounted on the portal frame or the template and is used to measure the longitudinal and lateral inclination angles of the portal frame and the template.

[0008] Preferably, the first displacement sensor is installed vertically near the top position to measure the vertical distance between the top of the second lining trolley template and the lining surface.

[0009] Preferably, the second displacement sensor is installed horizontally near the arch line position to measure the horizontal distance between the side of the second lining trolley template and the lining surface.

[0010] Preferably, two second displacement sensors are arranged, one on the left and one on the right, and are arranged symmetrically on the left and right about the center line of the second lining trolley.

[0011] Preferably, the second lining trolley template positioning and displacement monitoring system also includes a third displacement sensor arranged on the rear end top mold, and the third displacement sensor is installed horizontally to measure the horizontal distance between the second lining trolley top mold and the lining surface.

[0012] Preferably, two third displacement sensors are arranged near the arch waist and symmetrically arranged on the left and right sides of the center line of the second lining trolley.

[0013] Preferably, the second lining trolley template positioning and displacement monitoring system also includes a fourth displacement sensor arranged at the bottom of the rear end template, and the fourth displacement sensor is installed horizontally to measure the horizontal distance between the bottom of the second lining trolley template and the lining surface.

[0014] Preferably, two fourth displacement sensors are arranged symmetrically on the left and right sides of the center line of the second lining trolley.

[0015] Preferably, the first displacement sensor, the second displacement sensor, the third displacement sensor and the fourth displacement sensor are self-resetting linear displacement sensors.

[0016] Preferably, the extending ends of the first displacement sensor, the second displacement sensor, the third displacement sensor and the fourth displacement sensor extend out of the outer contour of the second lining trolley template.

[0017] Preferably, the second lining trolley template positioning and displacement monitoring system also includes a side mold position sensor for detecting the relative position between the side mold and the top mold.

[0018] Preferably, one side mold position sensor is provided on each side of the front and rear ends.

[0019] Preferably, the side mold position sensor is a pull rope sensor, one end of which is connected to the top mold and the other end is connected to the side mold. It detects the distance between the two points and is used to determine the distance of the side mold from the support position or the retracted position, and is used as a control signal to control the action of the side mold cylinder of the second lining trolley.

[0020] Preferably, the side mold position sensor is a proximity switch installed on the side mold and / or the top mold to detect whether the top mold and / or the side mold has reached a specified position, and is used to determine whether the side mold has reached a supporting position or a retracted position, and is used as a control signal to control the action of the side mold cylinder of the second lining trolley.

[0021] Preferably, the side mold position sensor is a proximity switch installed on the side mold and / or the top mold to detect whether the top mold and / or the side mold has reached a specified position, and is used to determine whether the side mold has reached a supporting position or a retracted position, and is used as a control signal to control the action of the side mold cylinder of the second lining trolley.

[0022] Preferably, the side mold position sensor is a travel switch, which is installed on the side mold and / or the top mold to detect whether the top mold and / or the side mold has reached the specified position, and is used to determine whether the side mold has reached the supporting position or the retracted position, and is used as a control signal to control the action of the side mold cylinder of the second lining trolley.

[0023] Preferably, the second lining trolley template positioning and displacement monitoring system also includes front and rear end alignment devices, which align the central axes of the front and rear end templates with the center line of the tunnel.

[0024] Preferably, the front and rear end alignment device includes a laser emitting device and a laser receiving device, which are respectively installed at the front and rear ends of the second lining trolley. The laser emitting device emits laser, and the laser receiving device is provided with a plurality of areas along the left and right directions, each area can receive the laser emitted by the laser emitting device, and send a signal of the corresponding area to the controller. The controller sends a signal to adjust the front end translation cylinder according to the signal of the laser receiving device so that the central axis of the front and rear end templates are aligned with the center line of the tunnel.

[0025] Preferably, the controller controls the movement of the vertical cylinder of the second lining trolley according to the displacement data of the first displacement sensor.

[0026] Preferably, the controller controls the action of the side mold cylinder of the second lining trolley according to the displacement data of the second displacement sensor and the fourth displacement sensor.

[0027] Preferably, the controller controls the movement of the translation cylinder at the rear end of the second lining trolley according to the difference in displacement between the third displacement sensors on both sides.

[0028] Preferably, the controller detects the vertical displacement change value of the second lining trolley during the lining process according to the displacement data of the first displacement sensor, which is used to control the pouring of top concrete. When the displacement change value is greater than the set value, an alarm is issued to indicate overload, and a control signal is given to the pouring system.

[0029] Preferably, the controller detects the horizontal displacement change value of the second lining trolley during the lining process according to the displacement data of the second displacement sensor, the third displacement sensor and the fourth displacement sensor, so as to control the pouring of the side concrete. When the displacement change value is greater than a set value, an alarm is issued to prompt overload, and a control signal is given to the pouring system. When the difference between the displacement change values ​​of the second displacement sensors on both sides is greater than a set value, or the difference between the displacement change values ​​of the third displacement sensors on both sides is greater than a set value, or the difference between the displacement change values ​​of the fourth displacement sensors on both sides is greater than a set value, an alarm is issued to prompt unbalanced load, and a control signal is given to the pouring system.

[0030] Compared with the prior art, the present invention has the following beneficial effects: During the formwork support process, the distance from the lining surface can be displayed in real time, enabling high-precision positioning and preventing the formwork from quickly contacting the lining surface, causing concrete top cracking or formwork deformation; During the pouring process, the distance from the lining surface can be displayed in real time to reflect the deformation of the formwork, an alarm can be given to indicate overload or unbalanced load, and a control signal can be given to the pouring system to effectively avoid the occurrence of overload and unbalanced load. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 The structure of the present invention is schematically shown Figure 1 ; Figure 2 The structure of the present invention is schematically shown Figure 2 . DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0033] A secondary lining trolley template positioning and displacement monitoring system comprises a first displacement sensor 1 arranged on the top of the rear end template of the secondary lining trolley, a second displacement sensor 2 arranged on the side of the rear end template of the secondary lining trolley, a third displacement sensor 3 arranged near the arch waist of the rear end template, a fourth displacement sensor 4 arranged at the bottom position of the rear end template, an inclination sensor 5 and a controller 6 installed on a door frame, and a side template position sensor 8 arranged between the top template and the side template.

[0034] The first displacement sensor 1 is installed vertically, near the bottom position, and is used to measure the vertical distance between the top of the second lining trolley template and the lining surface. The second displacement sensor 2 is installed horizontally, near the arch line position. Two second displacement sensors 2 are arranged, symmetrically arranged on the left and right of the center line of the second lining trolley, and are used to measure the horizontal distance between the side of the second lining trolley template and the lining surface. The third displacement sensor 3 is installed horizontally, near the arch waist position of the rear end top formwork. Two third displacement sensors 3 are arranged, symmetrically arranged on the left and right of the center line of the second lining trolley, and are used to measure the horizontal distance between the side of the second lining trolley top template and the lining surface. Two fourth displacement sensors 4 are arranged, symmetrically arranged on the left and right of the center line of the second lining trolley, and are used to measure the horizontal distance between the side of the second lining trolley side template and the lining surface. The inclination sensor 5 is used to measure the longitudinal inclination and lateral inclination of the gantry and the template.

[0035] The first displacement sensor 1, the second displacement sensor 2, the third displacement sensor 3, and the fourth displacement sensor 4 are self-resetting linear displacement sensors. The protruding ends of the first displacement sensor 1, the second displacement sensor 2, the third displacement sensor 3, and the fourth displacement sensor 4 extend beyond the outer contour of the second lining trolley template, with an excess length of 50 mm.

[0036] The controller 6 controls the action of the vertical cylinder of the second lining trolley according to the displacement data of the first displacement sensor 1 and the longitudinal inclination and lateral inclination data of the inclination sensor 5 .

[0037] The controller 6 controls the action of the side mold cylinder of the second lining trolley according to the displacement data of the second displacement sensor 2 and the fourth displacement sensor 4 .

[0038] The controller 6 controls the action of the translation cylinder of the second lining trolley according to the difference in displacement data of the third displacement sensor 3 .

[0039] The side mold position sensor 8 is used to detect the relative position between the side mold and the top mold. The side mold position sensor 8 is a pull rope sensor, one end of which is connected to the top mold and the other end is connected to the side mold. It detects the distance between the two points and is used to determine the distance between the side mold and the support position or the retracted position. It is used as a control signal to control the action of the side mold cylinder of the second lining trolley. Example

[0040] When the second lining trolley is supporting the top formwork, the vertical cylinder of the second lining trolley extends to raise the trolley, and the extended end of the first displacement sensor 1 first contacts the lining surface, displaying the vertical distance between the top of the top form and the lining surface. At this time, the vertical distance between the top of the top form and the lining surface is 50mm, and the vertical cylinder continues to extend to raise the trolley. When the vertical distance between the top of the top form and the lining surface is 20mm, the controller 6 sends an alarm signal to prompt that the top form is about to be in place and reduce the extension speed of the vertical cylinder. When the vertical distance between the top of the top form and the lining surface is 0mm, the controller 6 sends an alarm signal to prompt that the top form is in place and stops extending the vertical cylinder. Example

[0041] When the secondary lining trolley is supporting the top formwork, the vertical cylinder of the secondary lining trolley extends to raise the trolley, and the extended ends of the third displacement sensors 3 on the left and right sides contact the lining surface, displaying the horizontal distance between the two sides of the top formwork and the lining surface. The action of the translation cylinder of the secondary lining trolley is controlled by the difference in displacement of the third displacement sensors 3 on the left and right sides, so that the displacements of the third displacement sensors 3 on the left and right sides are the same, and the center line of the trolley is located on the center line of the tunnel.

[0042] Embodiment 4: When the second lining trolley is supporting the side formwork, the side form cylinder of the second lining trolley extends to expand the side formwork, and the extended ends of the first displacement sensor 2 and the fourth displacement sensor 4 contact the lining surface, displaying the horizontal distance of the side formwork from the lining surface. At this time, the horizontal distance of the side formwork from the lining surface is 50mm, and the side form cylinder continues to extend to expand the side formwork. When the horizontal distance of the side formwork from the lining surface is 20mm, the controller 6 sends an alarm signal to prompt that the side formwork is about to be in place and reduce the extension speed of the side form cylinder. When the horizontal distance of the side formwork from the lining surface is 0mm, the controller 5 sends an alarm signal to prompt that the side formwork is in place and stops extending the side form cylinder. Example

[0043] When the secondary lining trolley is pouring concrete, if the change in displacement of the first displacement sensor 1 and the displacement during positioning exceeds a set value, the controller 6 sends out an alarm signal, indicating that the pouring pressure is too large and overloaded. Example

[0044] When the secondary lining trolley is pouring concrete, if the displacement of the second displacement sensor 2, the third displacement sensor 3, and the fourth displacement sensor 4 exceeds the set value when compared with the displacement during positioning, the controller 6 sends out an alarm signal to indicate that the pouring pressure is too high and overloaded. Example

[0045] When the second lining trolley is pouring concrete, if the difference between the displacement change values ​​of the second displacement sensors 2 on the left and right sides and during positioning exceeds the set value, the controller 6 sends out an alarm signal, indicating that the pouring pressure on one side is too different from the other side, and alarming for overloading. Example

[0046] When the second lining trolley is pouring concrete, if the difference between the displacement change values ​​of the second displacement sensors 3 on the left and right sides and during positioning exceeds the set value, the controller 6 sends out an alarm signal, indicating that the pouring pressure on one side is too different from that on the other side, and an alarm of overloading is given. Example

[0047] When the second lining trolley is pouring concrete, if the difference between the displacement change values ​​of the second displacement sensors 4 on the left and right sides and during positioning exceeds the set value, the controller 6 sends out an alarm signal, indicating that the pouring pressure on one side is too different from that on the other side, and an alarm of overloading is given. Example

[0048] A secondary lining trolley template positioning and displacement monitoring system also includes a front and rear end alignment device 7, including a laser emitting device 70 and a laser receiving device 71, which are respectively installed at the front and rear ends of the secondary lining trolley. The laser emitting device 70 emits laser, and the laser receiving device 71 is provided with three areas along the left and right directions, which are area A, area B, and area C from left to right. Each area can receive the laser emitted by the laser emitting device 70 and send a signal of the corresponding area to the controller 6. The controller adjusts the front end translation cylinder according to the signal of the laser receiving device 71 so that the central axis of the front and rear end templates are aligned with the center line of the tunnel.

[0049] When area A receives the laser emitted by the laser emitting device 70, it means that the laser emitted by the rear end laser emitting device 70 is received by the laser receiving area 71 on the left side of the front end, which means that the central axis of the front end template is to the right of the central axis of the front end template. The controller 6 sends a signal for the front end translation cylinder to move left according to the signal of the laser receiving device 71, so that the front end template moves left until area B receives the laser emitted by the laser emitting device 70, thereby adjusting the front end translation cylinder to align the central axes of the front and rear end templates with the center line of the tunnel.

[0050] When area C receives the laser emitted by the laser emitting device 70, it means that the laser emitted by the rear end laser emitting device 70 is received by the laser receiving area 71 on the right side of the front end, which means that the central axis of the front end template is on the left side of the central axis of the front end template. The controller 6 sends a signal for the front end translation cylinder to move right according to the signal of the laser receiving device 71, so that the front end template moves right until area B receives the laser emitted by the laser emitting device 70, thereby adjusting the front end translation cylinder to align the central axes of the front and rear end templates with the center line of the tunnel.

[0051] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. The terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A secondary lining trolley template positioning and displacement monitoring system, characterized in that: It comprises a first displacement sensor arranged at the top of the rear end top mold of the secondary lining trolley, a second displacement sensor arranged at the side of the rear end template of the secondary lining trolley, and a controller, wherein the first displacement sensor is used to measure the distance between the top of the template of the secondary lining trolley and the top of the lining surface, and the second displacement sensor is used to measure the distance between the side of the template of the secondary lining trolley and the side of the lining surface, and the controller receives the real-time data of the first displacement sensor and the second displacement sensor, and outputs control instructions through a preset control program; The first displacement sensor is installed near the top position and is used to measure the vertical distance between the top of the secondary lining trolley template and the lining surface; The second displacement sensor is installed near the arch line position and is used to measure the horizontal distance between the side of the second lining trolley template and the lining surface. Two second displacement sensors are arranged, one on the left and one on the right.

2. A secondary lining trolley template positioning and displacement monitoring system according to claim 1, characterized in that: The first displacement sensor and the second displacement sensor are self-resetting linear displacement sensors, and the extending ends of the first displacement sensor and the second displacement sensor extend outside the outer contour of the second lining trolley template.

3. A secondary lining trolley template positioning and displacement monitoring system according to claim 1, characterized in that: The second displacement sensors are arranged symmetrically on the left and right sides of the center line of the second lining trolley.

4. A secondary lining trolley template positioning and displacement monitoring system according to claim 1, characterized in that: The secondary lining trolley template positioning and displacement monitoring system also includes an inclination sensor, which is installed on the portal frame or the template and is used to measure the longitudinal inclination and lateral inclination of the portal frame and the template.

5. The secondary lining trolley template positioning and displacement monitoring system according to claim 1 is characterized in that: The secondary lining trolley template positioning and displacement monitoring system also includes a third displacement sensor arranged on the rear end top mold, and the third displacement sensor is used to measure the horizontal distance between the secondary lining trolley top mold and the lining surface.

6. A secondary lining trolley template positioning and displacement monitoring system according to claim 5, characterized in that: Two third displacement sensors are arranged near the arch waist, and are self-resetting linear displacement sensors, which are arranged symmetrically on the left and right sides of the center line of the second lining trolley.

7. The secondary lining trolley template positioning and displacement monitoring system according to claim 1 is characterized by: The secondary lining trolley template positioning and displacement monitoring system also includes a fourth displacement sensor arranged at the bottom of the rear end template, and the fourth displacement sensor is used to measure the horizontal distance between the bottom of the secondary lining trolley template and the lining surface.

8. A secondary lining trolley template positioning and displacement monitoring system according to claim 7, characterized in that: The fourth displacement sensors are arranged in two, symmetrically arranged on the left and right sides of the center line of the second lining trolley, and are self-resetting linear displacement sensors.

9. The secondary lining trolley template positioning and displacement monitoring system according to claim 1 is characterized by: The second lining trolley template positioning and displacement monitoring system also includes front and rear end alignment devices, which align the central axes of the front and rear end templates with the center line of the tunnel.

10. The secondary lining trolley template positioning and displacement monitoring system according to claim 1 is characterized in that: The secondary lining trolley template positioning and displacement monitoring system also includes a side mold position sensor for detecting the relative position between the side mold and the top mold.

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