Adjustable marking device for shield measurement

Abstract

The utility model discloses an adjustable marking device for shield measurement. The objective of the utility model is to solve the technical problems that the installation of a centering facility at a tunnel pipe ring is limited, and the measurement operation is poor in accuracy and reliability due to the disturbance of pipe piece rotation. A slotted hole is formed in the side face of the cross beam in the length direction, the centering disc is arranged at the position, corresponding to the top of the end side of the slotted hole, of the cross beam, and one end of the supporting rod is hinged to the cross beam in a sliding mode correspondingly along the slotted hole through a threaded rod arranged in the slotted hole in a penetrating mode. And the mounting seats are respectively hinged to the cross beam and the other end side of the supporting rod and are correspondingly and fixedly connected with tunnel segments. The marking device has the advantages of being convenient and efficient to adjust and operate, high in environmental adaptability and the like.

Description

Technical Field

[0001] This application relates to the technical field of shield measurement, and particularly to an adjustable marking device for shield measurement. Background Art

[0002] The main purpose of shield measurement is to control the position and propulsion direction of the shield machine, ensure that the shield machine tunnels accurately along the designed axis, and thus guarantee the quality and safety of tunnel construction. Through precise measurement, construction deviations can be detected and corrected in a timely manner to ensure that the accuracy after tunnel breakthrough meets the design requirements.

[0003] High-precision measuring instruments are required for shield measurement, such as total stations, levels, gyrotheodolites, etc. The forced centering plate can provide forced centering connections for various measuring instrument devices such as total stations, theodolites, distance meters, levels, GPS, etc. Through precise design and processing, it is ensured that the measuring instrument can be centered after installation, reducing human installation errors and improving measurement accuracy.

[0004] Due to the arc shape of the formed tunnel segments, it is difficult to install the centering plate, resulting in limited installation positions; in addition, the tunnel segments may rotate to a certain extent after installation, causing the position of the fixedly installed centering plate to change and being difficult to adjust, thereby affecting the accuracy and reliability of the measurement operation in the tunnel and posing great potential risks.

[0005] The information disclosed in this background art section is only used to deepen the understanding of the background art of the present disclosure, and should not be regarded as an admission or any form of suggestion that this information constitutes the prior art known to those skilled in the art. Summary of the Invention

[0006] In view of at least one of the above technical problems, the present disclosure provides an adjustable marking device for shield measurement. The aim is to solve the technical problems that the installation of the centering facility at the tunnel pipe ring is limited and the accuracy and reliability of the measurement operation are poor due to the disturbance caused by the rotation of the segments.

[0007] According to one aspect of the present disclosure, there is provided an adjustable marking device for shield measurement, which includes a cross beam having a slot hole opened along the length direction on the side, a centering plate provided at the top position of the corresponding end side of the cross beam with respect to the slot hole, a support rod whose one end is slidably hinged to the cross beam along the slot hole through a screw rod inserted into the slot hole, and mounting seats respectively hinged to the other end sides of the cross beam and the support rod for fixedly connecting to the corresponding tunnel segments.

[0008] In some embodiments of the present disclosure, a fastening nut for relatively fixing the cross beam and the support rod is correspondingly screwed at one end of the screw rod.

[0009] In some embodiments of the present disclosure, an anti-slip gasket ring is provided between the side surface of the cross beam, the screw head of the screw rod and the fastening nut, and the anti-slip gasket ring is sleeved on the screw rod.

[0010] In some embodiments of the present disclosure, the mounting seat includes a fixing plate matching the curvature of the tunnel segment, and two hinge plates perpendicularly fixed to the corresponding side surfaces of the fixing plate and arranged in parallel correspondingly. The hinge plates are correspondingly hinged to the cross beam and the strut through hinge shafts.

[0011] In some embodiments of the present disclosure, a rubber layer with a certain thickness is provided on the contact surface of the fixing plate corresponding to the tunnel segment.

[0012] In some embodiments of the present disclosure, bolt holes for passing and fixing bolts are formed in the fixing plate.

[0013] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0014] 1. The cross beam is relatively fixed to the segment through the hinged mounting seat. Thus, when the segment rotates and causes the cross beam to be inclined at an angle relative to the initial design position, the cross beam can be easily adjusted by rotating the cross beam relative to its mounting seat, without disassembling, positioning, and reinstalling the mounting seat, reducing the workload and improving the efficiency.

[0015] 2. The strut can stably support the cross beam, and both ends are respectively hinged to the mounting seat through the screw rod passing through the slot hole of the cross beam. The support angle of the strut can be adjusted without disassembling the mounting seat, which is beneficial to reducing the operation workload and improving the operation efficiency.

[0016] 3. The rubber layer provided on the contact surface between the mounting seat and the segment can, on the one hand, achieve full contact with the segment through its elastic deformation, so as to ensure the uniform release of the load; on the other hand, it can avoid the hard contact between the fixing plate of the mounting seat and the segment, ensuring the structural safety of the segment. Description of the Drawings

[0017] Figure 1 It is a structural schematic diagram of an adjustable marking device in an embodiment of the present application.

[0018] In the above figures, 1 is the cross beam, 11 is the slot hole, 2 is the centering plate, 3 is the strut, 41 is the screw rod, 42 is the fastening nut, 51 is the fixing plate, and 52 is the hinge plate. Detailed Embodiments

[0019] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "vertical", "horizontal", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application. And the "connection" and "coupling" involved in the present application, unless otherwise specified, both include direct and indirect connection (coupling).

[0020] In order to better understand the technical solution of the present application, the above technical solution will be described in detail below in conjunction with the drawings of the specification and specific implementation manners.

[0021] After the tunnel segments are laid, the inner contour of the tunnel is arc-shaped, which makes it difficult to install measuring equipment such as total stations. It cannot be installed on the arc surface, and even after being installed and fixed, due to the possible rotation of the segments, the instrument equipment that has been centered will rotate with the pipe ring, thus having an adverse impact on the accuracy and reliability of the measurement operation. However, due to the relatively small rotation of the pipe ring, disassembling and reinstalling the measuring device has a large workload and low efficiency, and affects the normal tunneling of the shield machine. Therefore, this example discloses an adjustable marking device for shield measurement to solve the technical problems of difficult fixation of the measuring device, inability to adjust after fixation, and difficult adjustment, thereby avoiding delays in the tunneling period of the shield machine and ensuring the measurement accuracy of the measuring device.

[0022] Specifically, refer to Figure 1 , the marking device is used to support and fix the measuring equipment, which includes a cross beam 1. One end of the cross beam 1 is provided with a centering plate 2, and the centering plate 2 is fixed on the top of the cross beam 1 for the fixed placement of the measuring equipment.

[0023] To achieve the relative fixed setting between the cross beam 1 and the tunnel segment, refer to Figure 1 , an installation seat is provided on one side of one end of the cross beam 1. Specifically, the installation seat includes a fixing plate 51. In this example, the fixing plate 51 is an arc-shaped plate, and its radian is the same as that of the shield tunnel segment, thereby realizing the fitting and force transmission between the fixing plate and the segment, uniformly transmitting the load at its position to the segment, and avoiding the concentrated release of the load from affecting the structural safety of the segment. Among them, in order to realize the installation and fixation between the installation seat and the segment, in this embodiment, at least two bolt holes are provided at the fixing plate 51 for passing through and fixing bolts to realize the installation and fixation of the installation seat at the corresponding position of the segment.

[0024] Since the segment may rotate after installation, the marking device installed at the corresponding segment ring will rotate accordingly, which will affect the measurement accuracy and reliability of the measuring equipment installed at the centering plate 2. In addition, if the mounting seat at the cross beam is disassembled and reinstalled, on the one hand, the workload is large and it takes a certain amount of time; on the other hand, it is unknown whether the segment will rotate after adjustment, so multiple holes need to be drilled at the segment to fix the bolts, which affects the structural safety of the segment. Therefore, in this embodiment, the mounting seat is hinged to the cross beam 1, see Figure 1 The mounting seat further includes two hinge plates 52. The plane where the hinge plates 52 are located is perpendicular to the fixing plate 51, and the two hinge plates 51 are arranged in parallel. In this example, the distance between the two hinge plates 51 is the same as the corresponding width of the cross beam 1, so that the cross beam can just be clamped between the two hinge plates 51, and the rotation of the cross beam 1 relative to the mounting seat is realized through the hinge shaft passing through the two hinge plates 52 and the cross beam 1.

[0025] Through the hinge connection between the cross beam 1 and the mounting seat, when the segment rotates, resulting in a certain angle between the cross beam 1 and the designed position, that is, when the measuring instrument tilts due to the rotation of the segment, after rotating the cross beam 1 by a certain angle relative to the mounting seat, the level of the measuring instrument can be restored, and the tilt adjustment of the measuring equipment can be realized without disassembling the fixed connection between the mounting seat and the segment. However, the hinge connection between the cross beam 1 and the mounting seat will cause the cross beam to rotate around its mounting seat under the action of its own weight and the weight of the measuring equipment, and the relative position cannot be fixed. Therefore, see Figure 1 A support rod 3 is provided below the cross beam 1.

[0026] The support rod 3 is used to support the cross beam 1. One end of the support rod is relatively fixed to the cross beam, and the other end is relatively fixed to the tunnel segment. Thus, after the adjustment of the measuring equipment is completed, the cross beam 1 is prevented from rotating under the action of gravity. However, considering that after the segment rotates, the relative position of the cross beam 1 needs to rotate by a certain angle around its mounting seat. Therefore, the support rod 3 needs to be adjusted accordingly. In order to avoid disassembling and installing the fixed position of the support rod 3 to adapt to the position change of the cross beam 1, in this embodiment, see Figure 1 A slot hole 11 is formed on the side surface of the cross beam 1, and the corresponding end of the support rod 3 is also fixed through the mounting seat and the segment.

[0027] Specifically, see Figure 1, the slot 11 is opened on the side surface of the cross beam 1 and arranged along the length direction of the cross beam 1; a screw rod 41 is slidably arranged in the slot 11, and the screw rod 41 penetrates through one end of the support rod 3. Thus, while realizing the hinged connection between the support rod 3 and the cross beam 1 through the screw rod 41, the corresponding end of the support rod 3 can move along the slot within the opening range of the slot 11, so as to adapt to the change in the distance between the cross beam 1 and the fixed point of the support rod at the segment after the cross beam 1 rotates correspondingly, thereby avoiding the adjustment of the length of the support rod 3. In addition, considering that after the cross beam 1 is adjusted, it is necessary to ensure the reliable support of the support rod 3 for the cross beam 1, that is, it is necessary to ensure the relative fixation of the position of the screw rod in the slot 11. For this purpose, refer to Figure 1 , a fastening nut 42 is threadedly connected to the screw rod 41. By tightening the fastening nut 42, the fastening nut 42 is in close contact with the side surface of the cross beam, thereby ensuring the change in the position of the screw rod 41. When the cross beam 1 is adjusted, the support position of the support rod is adjusted after loosening the fastening nut 42. In some other embodiments, in order to further ensure the relative fixation of the position of the screw rod 41 in the slot 11 during the working process, anti-slip gasket rings are arranged between the screw head of the screw rod and the corresponding side surface of the cross beam and between the fastening nut and the corresponding side surface of the cross beam. In this example, the anti-slip gasket ring is a rubber material part, and the anti-slip gasket ring correspondingly penetrates through the screw rod to increase the friction between the fastening nut and the cross beam when the fastening nut is tightened, so as to ensure the relative stability of the position of the screw rod.

[0028] In addition, considering that when the cross beam 1 is rotated and adjusted, the position of the support rod 3 also needs to be adjusted accordingly. In order to avoid the adjustment of the fixed position of the support rod 3 at the pipe ring, refer to Figure 1 , in this embodiment, the other end of the support rod 3 is fixedly connected to the segment through the mounting seat. Similarly, the mounting seat includes a fixing plate 51, and bolt holes are opened on the fixing plate 51, and the fixing plate 51 is fixedly connected to the segment through the bolt holes; and two parallel hinge plates 52 are arranged perpendicular to the fixing plate 51, and the support rod 3 is hinged to the hinge plates 52. Thus, the rotation of the rod body of the support rod 3 relative to the mounting seat can be realized when the support rod 3 is adjusted. Furthermore, the two ends of the support rod 3 are respectively movably hinged along the slot through the screw rod and hinged to the mounting seat, so that when adjusting along with the cross beam 1, it is not necessary to adjust its mounting position, greatly reducing the adjustment workload and avoiding the adverse impact on the segment structure.

[0029] In some other embodiments, considering that there are certain allowable errors during the casting process of the segment, the fixing plate 51 of the mounting seat cannot be fully fitted with the segment, resulting in stress concentration at the contact part between the fixing plate 51 and the segment, and the uniform release of stress cannot be achieved. Therefore, in this embodiment, a rubber layer is provided on the contact surface between the fixing plate 51 and the tunnel segment. The rubber layer has a certain thickness. Thus, when the mounting seat is correspondingly installed at the corresponding position of the segment, through the elastic deformation of the rubber layer, on the one hand, there is no gap between the mounting seat and the segment, so as to ensure full contact between the mounting seat and the segment and achieve uniform load transfer; on the other hand, the hard contact between the fixing plate of the mounting seat and the segment can be avoided through this rubber layer, avoiding adverse effects on the segment structure.

[0030] Although some preferred embodiments of the present application have been described, those skilled in the art can make additional changes and modifications to these embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be construed as including the preferred embodiments as well as all changes and modifications falling within the scope of the present application.

[0031] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. An adjustable marking device for shield measurement, characterized in that, It includes a cross beam with a slot hole opened along the length direction on the side, a centering disc arranged at the top position on the end side of the cross beam corresponding to the slot hole, a strut with one end slidably hinged to the cross beam along the slot hole through a screw rod inserted into the slot hole, and mounting seats respectively hinged to the other end sides of the cross beam and the strut for correspondingly fixedly connecting with tunnel segments.

2. The adjustable marking device according to claim 1, characterized in that One end of the screw rod is correspondingly screwed with a fastening nut for relatively fixing the cross beam and the strut.

3. The adjustable marking device according to claim 2, wherein, An anti-slip gasket ring is arranged between the side surface of the cross beam and the screw head of the screw rod and the fastening nut, and the anti-slip gasket ring is inserted through the screw rod.

4. The adjustable marking device according to claim 1, characterized in that, The mounting seat includes a fixing plate matching the radian of the tunnel segment, and two hinge plates perpendicularly fixed to the corresponding side surface of the fixing plate and correspondingly arranged in parallel, and the hinge plates are correspondingly hinged to the cross beam and the strut through hinge shafts.

5. The adjustable marking device according to claim 4, wherein, The fixing plate is provided with a rubber layer with a certain thickness on the contact surface corresponding to the tunnel segment.

6. The adjustable marking device according to claim 4 or 5, characterized in that, The fixing plate is provided with bolt holes for inserting and fixing bolts.

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