Pipe curtain deviation measuring device

Abstract

The utility model relates to the technical field of pipe curtain construction, specifically relates to a pipe curtain deviation measuring device, through setting up the support main part in the pipe curtain, makes the central target can with the support main part as reference as far as possible to the pipe curtain central position setting, through the support beam longitudinal setting of support main part, and the multiple support beams of annular arrangement are connected in an organic whole with the positioning part for installing central target, make the position stability of keeping central target. In this way, in the case of adopting the elongated member propulsion device, it is not easy to have the pitch and horizontal swing, through the cooperation of external detection equipment, with the device deep into the deep place of pipe curtain, can also measure the real position of central target along the axis under the condition that the field of vision is invisible, thereby reflecting the actual pipe curtain driving trajectory.

Description

Technical Field

[0001] This utility model relates to the field of pipe curtain construction technology, and in particular to a pipe curtain deviation measuring device. Background Technology

[0002] In tunnel engineering, underground utility tunnels, and foundation pit support, pipe jacking is a widely used trenchless construction technique due to its minimal surface disturbance and strong environmental adaptability. During pipe jacking construction, steel pipes (or other pipe materials) are driven into the ground along a designed trajectory using methods such as horizontal directional drilling to form a continuous support structure. During pipe driving, the position and angle of the pipe head are typically fed back in real time through a measurement while drilling (MWD) system or a directional instrument to guide operators in adjusting the drilling direction. If deviations are detected, they are immediately corrected by adjusting the drill bit attitude and thrust to reduce error accumulation. Since the measurement data comes from sensors built into the drilling rig or directional signals, once the pipe is driven in (piling is completed) and the drill rod is withdrawn, real-time data acquisition ceases.

[0003] However, due to factors such as geological heterogeneity and drilling equipment errors, the actual axis of the driven pipe curtain is prone to deviating from the design trajectory. Measurement data during construction alone cannot reflect the true shape of the driven pipe curtain. Uneven spacing, insufficient overlap, or encroachment on adjacent structural spaces can easily lead to support failure, ground subsidence, and other engineering risks. Therefore, systematic testing is necessary after all pipe curtain construction is completed to accurately assess the pipe curtain deviation accuracy and ensure the reliability of the overall support structure. Utility Model Content

[0004] The purpose of this invention is to solve the problem that in the existing technology, real-time monitoring during pipe jacking construction is mainly used for dynamic correction, and there is a lack of verification and testing methods for systematic accuracy evaluation after pile completion. This invention provides a pipe jacking deviation measurement device.

[0005] In a first aspect, the present invention provides a pipe curtain deviation measuring device, comprising:

[0006] The support body is used to support the inner wall of the tube curtain. The support body includes a positioning component and several support beams. Each support beam is arranged along the axis of the tube curtain and is spaced apart around the tube curtain. The positioning component is connected to each support beam as a whole and the positioning component corresponds to the center position of the tube curtain.

[0007] A central target is connected to the positioning component. The center of the central target corresponds to the center of the tube curtain. The central target is used to be identified by external detection equipment to determine the actual spatial position of the tube curtain center.

[0008] And an extension member, which is connected to the main body of the support.

[0009] Preferably, the plurality of the support beams are parallel to each other.

[0010] Preferably, there are four support beams, and all four support beams are in contact with the inner wall of the tube curtain.

[0011] Preferably, the positioning component is a rod member, arranged along the axis of the tube curtain, and both ends of the positioning component are fixedly connected to each of the supporting beams through connecting rods.

[0012] Preferably, the pipe curtain deviation measuring device of this utility model further includes a cross, which has four auxiliary targets along its circumference, and the cross is connected to the positioning component.

[0013] Preferably, the cross is rotatably connected to the positioning component, and a counterweight is provided at the bottom of the cross to prevent the cross from rotating due to the rotation of the support body during forward movement, thus ensuring that the cross remains in a specific position at all times.

[0014] Preferably, the bottom of the support beam is provided with rollers at at least two locations to facilitate movement.

[0015] Preferably, the extension member is connected to a PVC pipe, which is used to extend the pipe via an adapter.

[0016] Preferably, the pipe curtain deviation measuring device of this utility model further includes a water pipe, which is connected to the PVC pipe and the support body respectively, and the water pipe is used for rinsing.

[0017] Preferably, the support beam is made of square steel or steel plate.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] This invention provides a pipe curtain deviation measurement device. By setting a support body inside the pipe curtain, the central target can be positioned as close as possible to the center of the pipe curtain with the support body as a reference. By longitudinally arranging the support beams of the support body and connecting multiple circumferentially arranged support beams with a positioning component for installing the central target, the position of the central target is kept stable. This minimizes pitch and horizontal swaying when using an extension propulsion device. In conjunction with external detection equipment, as the device penetrates deeper into the pipe curtain, the actual position of the central target along the axis can be measured even when not visible, thus reflecting the actual driving trajectory of the pipe curtain. This device has a simple structure, maintains the target's stable position within the pipe curtain, reduces measurement costs in complex environments, enables post-construction accuracy verification and risk prediction, and fills the gap in accuracy assessment during the pile acceptance stage of existing pipe curtain construction methods. Attached Figure Description

[0020] Figure 1This is a cross-sectional view of a pipe curtain deviation measuring device in the embodiment;

[0021] Figure 2 This is a longitudinal section view of a pipe curtain deviation measuring device in the embodiment;

[0022] Figure 3 A schematic diagram of the structure connecting the cross and the positioning component.

[0023] Marked in the image:

[0024] 1-Positioning component; 11-Sleeve; 2-Support beam; 3-Connecting rod; 4-Center target; 5-Cross; 6-Auxiliary target; 7-Extension piece; 8-Roller. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0026] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0027] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0028] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0029] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0030] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0031] Example

[0032] like Figure 1 , Figure 2 As shown, a pipe curtain deviation measuring device includes a support body, a central target 4, and an extension member 7.

[0033] The main support structure is placed on the inner wall of the tube curtain to fix the central target 4, aligning it with the center of the tube curtain. The central target 4 is used by external detection equipment to determine the actual spatial position of the tube curtain center. The extension member 7 is connected to the main support structure and is used to move the main support structure for easy hand-held propulsion. By pushing and pulling the extension member 7, the main support structure is moved along the axis of the tube curtain steel pipe. As the main support structure goes deeper into the tube curtain steel pipe, the extension member 7 can be gradually lengthened.

[0034] In one or more embodiments, the main body of the support includes a positioning component 1 and several support beams 2. Each support beam 2 is arranged along the axis of the tube curtain and spaced circumferentially along the tube curtain. The positioning component 1 and each support beam 2 are connected as one unit by radially arranged connecting rods 3. The positioning component 1 corresponds to the center position of the tube curtain. A center target 4 is installed on the positioning component 1 at the position corresponding to the center of the tube curtain, so that the center of the center target 4 corresponds to the center position of the tube curtain. At this time, the distance from the position where the center target 4 is installed on the positioning component 1 to any three positions on the inner wall of the tube curtain steel pipe on the same cross section is basically the same. By arranging multiple support beams 2 longitudinally and connecting the multiple circumferentially arranged support beams 2 to the positioning component 1 for installing the center target 4, the position of the center target 4 can be kept stable, realizing the overall self-stabilization of the device. In this way, when using the extension member 7 as an integral propulsion device, pitch and horizontal sway are not easy to occur. Thus, the true position of the center target 4 along the axis can be measured as the device penetrates deeper into the tube curtain, thereby truly reflecting the actual trajectory of the tube curtain, unaffected by the dim light in the surrounding area. During measurement, the detection equipment located outside the tube curtain can be adjusted to a suitable height according to the preset height of the central target 4 to accurately locate the central target 4.

[0035] In an optional embodiment, several support beams 2 are arranged parallel to each other, which allows the support beams 2 to fit as closely as possible to the pipe wall, minimizing the risk of overturning. Preferably, four support beams 2 are provided, all of which are in full contact with the inner wall of the pipe curtain and are distributed in an upward, downward, left, and right orientation. The four support beams 2 are connected as a whole at their front and rear ends by two cross-shaped brackets. The cross-shaped brackets can be formed by welding two connecting rods 3 together, or by splicing one long connecting rod 3 and two short connecting rods 3. The connecting rods 3 can be made of steel bars or structural steel components, and the support beams 2 can be made of steel plates or structural steel components. When the four support beams 2 at different locations contact the pipe wall, they can mutually limit each other, preventing the position of the central target 4 from shifting due to improper operation. When the support beam 2 moves to the position where the steel pipe undergoes radial deformation when it is driven into the formation, the entire device can be rotated to make the support beam 2 move away from the deformed position.

[0036] Accordingly, the positioning component 1 is preferably a rod member with a certain length, and its structure can be the same as that of the connecting rod 3. The positioning component 1 is arranged along the axis of the tube curtain and is located at the center of the four peripheral support beams 2. The two ends of the positioning component 1 are connected to the cross-shaped brackets at the front and rear ends, resulting in a simple structure. Alternatively, several connecting rods 3 can be arranged along the positioning component 1 to connect the peripheral support beams 2 respectively, forming a single unit. That is, the connecting rods 3 connecting the support beams 2 can be located at the same node or at different node positions. The distance from the positioning component 1 to the four support beams 2 is basically the same.

[0037] In an optional embodiment, two support beams 2 can be used to support the left and right sides of the tube curtain in parallel. Rollers 8 are installed at the front and rear of the two support beams 2 at the bottom for easy movement, so that the two support beams 2 together serve as the support fulcrum of the measuring device. The other two support beams 2 at the top can maintain a certain amount of space with the inner wall of the tube, so that the measuring device can be placed into the tube curtain steel pipe as a whole. The distance between the central target 4 and the two support beams 2 at the bottom is adapted to the radius of the tube wall. When the measuring device moves to different positions, it is considered that the central target 4 always corresponds to the center position of the tube curtain. Therefore, the measuring device can ensure the accuracy of the measurement of the position of the central target 4 and can be used to measure the actual position of the tube curtain. The support beams 2 are preferably made of square steel structure. Both ends of the support beams 2 are inclined and the inclined ports are sealed by welded steel plates to prevent mud in the tube curtain from entering the interior of the support beams 2, thus reducing the resistance to advancement.

[0038] In one or more embodiments, a cross 5 can be further installed at the front end of the above-mentioned device. The cross 5 has four auxiliary targets 6 arranged circumferentially. The cross 5 is connected to the positioning component 1; the central target 4 can be fixedly set at the center of the cross 5. The four auxiliary targets 6 are used to assist in measuring the position of the tube curtain and to verify the measurement accuracy of the central target 4. The cross 5 and the positioning component 1 are preferably rotatably connected. A counterweight is provided at the bottom of the cross 5, which can be set on any of the rods of the cross 5 to prevent the cross 5 from rotating due to the rotation of the support body during forward movement, ensuring that the cross 5 remains in a specific position at all times.

[0039] In an optional implementation, to prevent the cross 5 from detaching from the positioning component 1, while allowing the cross 5 to rotate, such as... Figure 3 As shown, a sleeve 11 with a threaded hole can be provided at the front end of the positioning component 1. A connector with a limiting plate is movably inserted into the center of the cross 5. One end of the connector is threaded to the sleeve 11. The cross 5 is movably positioned between the sleeve 11 and the limiting plate through the limiting plate at the other end of the connector. The cross 5 can rotate relative to the sleeve 11. Under the gravity of the counterweight, the cross 5 can maintain a stable position.

[0040] In an optional embodiment, the elongation member 7 adopts a Y-shaped structure, with the two forked ends of the elongation member 7 fixedly connected to two support beams 2 supported on the tube curtain at the bottom, making it easy to push and pull and resulting in more even stress distribution on the structure. Preferably, the elongation member 7 is rotatably connected to the support beams 2, so that when not in operation, the elongation member 7 can be placed directly on the tube curtain, minimizing the impact of the operation of the elongation member 7 on the measuring device and preventing it from tipping over.

[0041] In one or more embodiments, the extension member 7 is connected to a PVC pipe, which can be extended by an adapter for easy connection.

[0042] In one or more embodiments, the above-mentioned pipe curtain deviation measuring device further includes a water pipe, which is connected to the PVC pipe and the support body respectively, and the water pipe is used for rinsing.

[0043] After the completion of all pipe jacking construction, the aforementioned pipe jacking deviation measurement device can be used to systematically detect deviations by pre-setting high-recognition targets within the steel pipe jacking. Combined with subsequent ground-penetrating radar or optical measurement methods, the three-dimensional trajectory of the pipe jacking can be quickly reconstructed to reflect its true shape after pile formation, thereby accurately assessing the pipe jacking deviation accuracy and ensuring the reliability of the overall support structure. This device enables full-axis measurement of the pipe jacking axis, significantly reducing measurement costs in complex environments, facilitating post-construction accuracy verification and risk prediction, and filling the gap in accuracy assessment during the pile acceptance stage of existing pipe jacking methods.

[0044] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for measuring pipe curtain deviation, characterized in that, include: The main body of the support is used to support the inner wall of the tube curtain. The main body of the support includes a positioning component (1) and several support beams (2). Each support beam (2) is arranged along the axis of the tube curtain and is spaced apart along the circumference of the tube curtain. The positioning component (1) is connected to each support beam (2) as a whole. The positioning component (1) corresponds to the center position of the tube curtain. The center target (4) is connected to the positioning component (1). The center of the center target (4) corresponds to the center position of the tube curtain. The center target (4) is used to be identified by external detection equipment to determine the actual spatial position of the tube curtain center. And an extension member (7), which is connected to the main body of the support.

2. The pipe curtain deviation measuring device according to claim 1, characterized in that, Several of the supporting beams (2) are parallel to each other.

3. The pipe curtain deviation measuring device according to claim 1, characterized in that, The number of the support beams (2) is four, and all four support beams (2) are in contact with the inner wall of the tube curtain.

4. The pipe curtain deviation measuring device according to claim 1, characterized in that, The positioning component (1) is a rod component, which is set along the axis of the tube curtain. The two ends of the positioning component (1) are fixedly connected to each of the support beams (2) through connecting rods (3).

5. The pipe curtain deviation measuring device according to claim 1, characterized in that, It also includes a cross (5), which has four auxiliary targets (6) along its circumference, and the cross (5) is connected to the positioning component (1).

6. The pipe curtain deviation measuring device according to claim 5, characterized in that, The cross (5) is rotatably connected to the positioning component (1), and a counterweight is provided at the bottom of the cross (5).

7. The pipe curtain deviation measuring device according to claim 1, characterized in that, At least two of the support beams (2) are provided with rollers (8) at their bottom.

8. A pipe curtain deviation measuring device according to any one of claims 1-7, characterized in that, The extension member (7) is connected to a PVC pipe, which is used to extend the pipe via an adapter.

9. A pipe curtain deviation measuring device according to claim 8, characterized in that, It also includes a water pipe, which is connected to the PVC pipe and the support body respectively, and the water pipe is used for showering.

10. A pipe curtain deviation measuring device according to any one of claims 1-7, characterized in that, The supporting beam (2) is made of square steel or steel plate.

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