Auxiliary bearing device of inclinometer for freezing hole of contact channel in shield section

Abstract

The utility model discloses an auxiliary bearing device for a shield section contact channel freezing hole inclinometer, which comprises a carrier plate and a sleeve which are rotationally connected through a pair of framework connecting rods arranged in parallel, and a connecting screw rod is vertically and fixedly arranged in the center of one side plate surface of the carrier plate; at least two jacking screws are vertically arranged on the outer wall of the end, away from the carrying plate, of the sleeve in a threaded connection and penetrating mode in the circumferential direction, and the distances from the penetrating hole of one jacking screw to the two framework connecting rods are equal. The auxiliary bearing device has the advantages of stably bearing inclination measuring instruments (such as a total station or an electronic theodolite), easily realizing rough leveling of the instruments, ensuring firm connection between the whole auxiliary bearing device and a penetrating pipe, enabling the instruments to be horizontally suspended and supported at the opening of a freezing hole through accurate leveling again, and improving the working efficiency. Deviation of the instrument in a leveling state caused by treading of a worker is prevented, and the measurement accuracy is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of shield construction, in particular to an auxiliary bearing device for inclinometer of freezing holes in shield tunnel connection passages. Background Technique

[0002] In the shield construction of underground rail transit, when the freezing holes of the connection passage are drilled, the measurement of the hole inclination needs to be carried out. At present, a more rapid, efficient and stable measurement method is to use inclinometer instruments (such as total station or electronic theodolite) for measurement. Before measurement, stable and easy-to-level working conditions need to be provided for the instrument as the working reference for the inclinometer measurement of the freezing holes in the connection passage. The existing method is to fully cover the walkway boards on the working scaffold on the edge of the connection passage, and then use a tripod to set up the inclinometer instrument for measurement; due to the small internal space and poor stability of the scaffold, it is difficult to set up the instrument with a tripod, and the setup time is too long, seriously affecting the measurement efficiency. In addition, when the staff stands or moves in the nearby area, they will step on the scaffold, causing the leveling state of the instrument to deviate; in addition, due to the fact that the distance and angle between the objective lens of the instrument and the pipe orifice in the freezing hole have a certain limited range, neither too close nor too far, it is impossible to ensure that the distance and angle are met at one time when using a tripod to set up the instrument, resulting in the influence on the measurement accuracy and measurement efficiency when the instrument conducts the next measurement work. Summary of the Invention

[0003] The purpose of the utility model is to provide an auxiliary bearing device for inclinometer of freezing holes in shield tunnel connection passages aiming at the defects of the prior art.

[0004] To achieve the above purpose, the utility model can adopt the following technical solutions:

[0005] The auxiliary bearing device for inclinometer of freezing holes in shield tunnel connection passages of the utility model includes a carrier plate and a sleeve rotatably connected through a pair of parallel skeleton connecting rods. A connecting screw is vertically fixed at the center of one side plate surface of the carrier plate. At least two pressing screws are vertically screwed and penetrated through the outer wall of the end of the sleeve far away from the carrier plate along the circumferential direction, and the distance from the perforation of one of the pressing screws to the two skeleton connecting rods is equal.

[0006] Specifically, a pair of first rotating shaft screws vertically fixed on the left and right plate edges of the carrier plate are horizontally screwed and penetrated through one end of the two skeleton connecting rods, and a pair of second rotating shaft screws vertically fixed on the left and right side walls of the sleeve are horizontally screwed and penetrated through the other end of the two skeleton connecting rods. A pair of first sleeve shaft nuts for fixing the skeleton connecting rods are arranged on each first rotating shaft screw, and a pair of second sleeve shaft nuts for fixing the skeleton connecting rods are arranged on each second rotating shaft screw.

[0007] Further, the carrier plate is a thick steel plate with a length of 270 mm, a width of 130 mm, and a thickness of 10 mm. The sleeve is a steel pipe with a length of 160 mm, a diameter of 120 mm, and a wall thickness of 5 mm. The skeleton connecting rod is a 40×40 mm square steel pipe with a length of 560 mm. The connecting screw is an M15 screw, the pressing screw is an M16 screw, the first rotating shaft screw has a diameter of 16 mm and a length of 120 mm, and the second rotating shaft screw has a diameter of 16 mm and a length of 132 mm.

[0008] The advantages of the present utility model are as follows: The sleeve and the pressing screw passing through it can be easily coaxially installed on the pipe in the freezing hole. At the same time, a pair of skeleton connecting rods rotatably connected to the sleeve and the carrier plate rotatably connected to the two skeleton connecting rods are used to stably carry surveying instruments (such as total stations or electronic theodolites), easily achieving a rough leveling of the instruments. While ensuring a firm connection between the entire auxiliary loading device and the pipe, the instrument can be horizontally suspended at the orifice of the freezing hole by precise leveling again, preventing the deviation of the leveling state of the instrument caused by the staff stepping on it and ensuring the measurement accuracy. In addition, the entire auxiliary loading device has a simple structure, is easy to operate, and has a low manufacturing cost, and can be easily processed and manufactured at the construction site. Description of the Drawings

[0009] Figure 1 is a structural schematic diagram of the present utility model.

[0010] Figure 2 is Figure 1 the left view of

[0011] Figure 3 is Figure 1 the bottom view of Detailed Embodiments

[0012] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0013] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0014] In addition, in the present utility model, descriptions such as "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature.

[0015] As Figures 1-3 shown, the auxiliary bearing device for the inclinometer of the freeze hole in the shield tunnel connection passage described in the present utility model includes a carrier plate 1, a sleeve 2, and a pair of parallel skeleton connecting rods 3. The carrier plate 1 and the sleeve 2 are rotationally connected into one body through the skeleton connecting rods 3. Specifically, at one end of the two skeleton connecting rods 3, a pair of first rotating shaft screw rods 4 vertically fixed to the left and right plate edges of the carrier plate 1 are horizontally screwed through. At the other end of the two skeleton connecting rods 3, a pair of second rotating shaft screw rods 5 vertically fixed to the left and right side walls of the sleeve 2 are horizontally screwed through. The two first rotating shaft screw rods 4 are located on the same axis, so that the carrier plate 1 can rotate around the axis of the first rotating shaft screw rod 4. The two second rotating shaft screw rods 5 are located on the same axis, so that the sleeve 2 can rotate around the axis of the second rotating shaft screw rod 5. In addition, in order to fix the positions of the carrier plate 1 and the sleeve 2 after they rotate in place, a pair of first sleeve shaft nuts 6 for pressing and fixing the skeleton connecting rods 3 should be provided on each first rotating shaft screw rod 4, and a pair of second sleeve shaft nuts 7 for pressing and fixing the skeleton connecting rods 3 should be provided on each second rotating shaft screw rod 5.

[0016] A connecting screw rod 8 is vertically fixed at the center of one side plate surface of the carrier plate 1. The connecting screw rod 8 should be matched with the base of the existing common inclinometer and can be screwed through and fixed in the connecting hole at the bottom of the base, so that the inclinometer can be stably fixed on the carrier plate 1. At least two pressing screw rods 9 are vertically screwed through the outer wall of the end of the sleeve 2 far from the carrier plate 1 along the circumferential direction. The distance from the perforation of one pressing screw rod 9 to the two skeleton connecting rods 3 is equal (i.e., directly above the midline between the two skeleton connecting rods 3) for facilitating alignment of the device. In addition, in order to improve the pressing effect of the pressing screw rods 9, a rubber pad sleeve can be fixedly sleeved on the inner end of each pressing screw rod 9.

[0017] During actual processing, the carrier plate 1 is made of a thick steel plate with a length of 270 mm, a width of 130 mm, and a thickness of 10 mm. The sleeve 2 is made of a steel pipe with a length of 160 mm, a diameter of 120 mm, and a wall thickness of 5 mm. The skeleton connecting rod 3 is made of a 40×40 mm square steel pipe with a length of 560 mm. The diameter of the first rotating shaft screw rod 4 is 16 mm and the length is 120 mm. The diameter of the second rotating shaft screw rod 5 is 16 mm and the length is 132 mm. The connecting screw rod 8 is an M15 screw rod, and the pressing screw rod 9 is an M16 screw rod. The overall structure is simple and the manufacturing cost is low. All materials can be obtained at the construction site and easily processed and manufactured. During manufacturing, first, the two first rotating shaft screw rods 4 are coaxially welded and fixed on the left and right plate edges of the carrier plate 1, and one end of the skeleton connecting rod 3 is stripped of threads and drilled with a hole with a diameter of 16 mm, which is matched with the first rotating shaft screw rod 4. Then, the two skeleton connecting rods 3 are installed on the two first rotating shaft screw rods 4 one by one in the order of the first sleeve nut 6 - the skeleton connecting rod 3 - the first sleeve nut 6. After that, the two skeleton connecting rods 3 are stripped of threads and drilled with a hole with a diameter of 16 mm at the end far from the carrier plate 1, which is matched with the second rotating shaft screw rod 5. The two second rotating shaft screw rods 5 are inserted through the two skeleton connecting rods 3 one by one, and a pair of second sleeve nuts 7 that respectively abut against the left and right sides of the skeleton connecting rod 3 are screwed on each second rotating shaft screw rod 5. After the above operations are completed, the two second rotating shaft screw rods 5 are coaxially welded and fixed on the left and right side walls of the sleeve 2. Finally, a connecting screw rod 8 is vertically welded and fixed at the center of one side plate surface of the carrier plate 1. Two 16-mm-diameter openings with internal threads are circumferentially opened on the outer wall of the sleeve 3 at the end far from the carrier plate 1, and a pressing screw rod 9 is screwed and inserted into each opening to complete the processing and manufacturing of the entire auxiliary bearing device.

[0018] During use, first, the end of the sleeve 2 with the pressing screw rod 9 is sleeved on the pipe passing through the freezing hole, and fixed with the pressing screw rod 9. The sleeved depth is such that the freezing hole orifice is aligned with the end face of the sleeve 2, so that the sleeve 2 is firmly connected and fitted with the freezing hole. Then, the inclinometer is fixed on the carrier plate 1, and by rotating the skeleton connecting rod 3 and the carrier plate 1, the inclinometer is always in a roughly leveled state. After that, the inclination measurement of the freezing hole can be carried out, and the precise leveling of the instrument can be easily achieved before measurement. While ensuring that the entire auxiliary bearing device is firmly connected to the pipe passing through, the instrument can be horizontally suspended at the freezing hole orifice, preventing the instrument leveling state from deviating due to the staff stepping on the walkway plate laid in the connection passage and ensuring the accuracy of the measurement.

Claims

1. An inclinometer auxiliary bearing device for a frozen hole in a shield tunnel connection passage, characterized in that: It includes a carrier plate and a sleeve rotatably connected by a pair of parallelly arranged skeleton connecting rods. A connecting screw is vertically fixed at the center of one side plate surface of the carrier plate. At least two pressing screws are vertically screwed and penetrated through the outer wall of the end of the sleeve far from the carrier plate along the circumferential direction. The distance from the perforation of one of the pressing screws to the two skeleton connecting rods is equal.

2. The inclinometer auxiliary bearing device for the frozen holes of the shield tunnel connecting passage according to claim 1, wherein: At one end of the two skeleton connecting rods, a pair of first rotating shaft screw rods vertically fixed to the left and right plate edges of the carrier plate are horizontally screwed and penetrated. At the other end of the two skeleton connecting rods, a pair of second rotating shaft screw rods vertically fixed to the left and right side walls of the sleeve are horizontally screwed and penetrated. A pair of first sleeve shaft nuts for firmly pressing the skeleton connecting rods are arranged on each first rotating shaft screw rod. A pair of second sleeve shaft nuts for firmly pressing the skeleton connecting rods are arranged on each second rotating shaft screw rod.

3. The inclinometer auxiliary bearing device for the frozen hole of the shield tunnel connection passage according to claim 2, wherein: The carrier plate is a thick steel plate with a length of 270 mm, a width of 130 mm, and a thickness of 10 mm. The sleeve is a steel pipe with a length of 160 mm, a diameter of 120 mm, and a wall thickness of 5 mm. The skeleton connecting rod is a 40×40 mm square steel pipe with a length of 560 mm.

4. The inclinometer auxiliary bearing device for the frozen holes of the shield tunnel connection passage according to claim 3, characterized in that: The connecting screw is an M15 screw. The pressing screw is an M16 screw. The diameter of the first rotating shaft screw rod is 16 mm and the length is 120 mm. The diameter of the second rotating shaft screw rod is 16 mm and the length is 132 mm.

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