Two-dimensional adjustment electromechanical conduit floor-penetrating pre-burying positioning device and positioning method

CN118441881BActive Publication Date: 2026-08-11CHINA CONSTR EIGHT ENG DIV CORP LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-05-27
Publication Date
2026-08-11

AI Technical Summary

Technical Problem

[0005]本发明的目的在于提供一种二维调差机电管道穿楼板预埋定位装置及定位方法,能够解决现有技术的做法中导致的楼板混凝土质量问题和支撑底板强度降低的问题

Benefits of technology

[0026] 1. Because the present invention is equipped with a two-dimensional adjusting tie member, the upper support bridge and the support base plate are tied together by the tie member and the locking member. This ensures the stable installation of the embedded cylinder on the support base plate and prevents slippage during concrete pouring. At the same time, it also ensures that the embedded cylinder can be flexibly disassembled and moved, avoids repeated drilling on the support base plate, avoids the reduction of the support base plate strength, increases the service life and reusability of the support base plate, and avoids quality problems such as pitting, honeycombing, and unevenness after the floor slab concrete is poured.

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Abstract

This invention discloses a two-dimensional adjustable positioning device and method for pre-embedded electromechanical pipes penetrating floor slabs. The positioning device includes a positioning cover plate, an embedded cylinder, a supporting base plate, an upper supporting bridge, and a two-dimensional adjusting tie member. The embedded cylinder is a hollow cylindrical structure with openings at the top and bottom. The lower end of the embedded cylinder abuts against the supporting base plate. The upper supporting bridge is disposed inside the embedded cylinder and is parallel to the supporting base plate. The two-dimensional adjusting tie member is adjustable and tied between the upper supporting bridge and the supporting base plate, allowing the embedded cylinder to be installed at the pre-embedded position on the supporting base plate. The positioning cover plate is detachably disposed on top of the embedded cylinder and covers the upper supporting bridge and the two-dimensional adjusting tie member directly above it. This invention relates to the field of building construction technology and can solve the problems of floor slab concrete quality and reduced strength of the supporting base plate caused by existing techniques.
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Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to a two-dimensional differential electromechanical pipeline pre-embedded positioning device and positioning method for penetrating floor slabs. Background Technology

[0002] In the field of building construction, the pre-embedding and accurate positioning of mechanical and electrical pipelines penetrating floor slabs has always been a challenge. Currently, the following three methods are commonly used for pre-embedding mechanical and electrical pipelines penetrating floor slabs: First, steel pre-embedded cylinders are fabricated on-site, and after positioning, they are fixed by hammering nails into the supporting base plate around the pre-embedded cylinder; second, pre-fabricated PVC pipe pre-embedded cylinders are used, with ear plates set around the pre-fabricated PVC pipe pre-embedded cylinders, and after positioning, the ear plates are fixed to the supporting base plate with nails; third, pre-fabricated rubber pre-embedded blocks are used, with round holes pre-drilled in the supporting base plate, and the pre-fabricated rubber pre-embedded blocks are fixed to the supporting base plate with bolts.

[0003] For the first and second methods, when the supporting base plate is reused many times, the strength and flatness are poor due to the large number of nails driven into it. This makes the embedded cylinder prone to displacement during concrete pouring, and results in surface defects and unevenness in the finished floor slab concrete. For the third method, the rubber embedded blocks deform to some extent during pouring and after long-term use. With the reuse of the supporting base plate, coupled with construction errors and other factors, holes need to be continuously drilled in the supporting base plate, leading to reduced strength of the supporting base plate and honeycomb and surface defects in the floor slab concrete.

[0004] Therefore, there is a need to provide a two-dimensional differential electromechanical pipeline pre-embedded positioning device and positioning method for floor slabs, which can solve the problems of floor slab concrete quality and reduced strength of supporting base plate caused by the existing technology. Summary of the Invention

[0005] The purpose of this invention is to provide a two-dimensional differential electromechanical pipeline pre-embedded positioning device and positioning method for floor slabs, which can solve the problems of floor slab concrete quality and reduced strength of supporting base plate caused by the existing technology.

[0006] This invention is implemented as follows:

[0007] A two-dimensional adjustable electromechanical pipeline penetration positioning device includes a positioning cover plate, a pre-embedded cylinder, a supporting base plate, an upper supporting bridge, and a two-dimensional adjusting tie member. The pre-embedded cylinder is a hollow cylindrical structure with openings at the top and bottom. The lower end of the pre-embedded cylinder abuts against the supporting base plate. The upper supporting bridge is set inside the pre-embedded cylinder and is parallel to the supporting base plate. The two-dimensional adjusting tie member can be adjusted in a two-dimensional manner between the upper supporting bridge and the supporting base plate, so that the pre-embedded cylinder is installed at the pre-embedded position on the supporting base plate. The positioning cover plate is detachably set on the top of the pre-embedded cylinder and covers the upper supporting bridge and the two-dimensional adjusting tie member directly above it.

[0008] The two-dimensional adjusting tie member includes a tie member, a first locking member, and a second locking member; a first adjusting groove is formed on the support base plate at the pre-embedded position of the pre-embedded cylinder, and a second adjusting groove is formed in the middle of the upper support bridge; the lower end of the tie member movably passes through the first adjusting groove and is locked to the support base plate by the first locking member, and the upper end of the tie member movably passes through the second adjusting groove and is locked to the upper support bridge by the second locking member.

[0009] Both the first and second adjustment grooves are elongated grooves, and the length direction of the first adjustment groove is perpendicular to the length direction of the second adjustment groove.

[0010] The lower part of the tie member is fitted with a fixing washer, which abuts against the top surface of the support base plate. The lower part of the tie member is fitted with a second movable washer, and the second locking member abuts the second movable washer against the bottom surface of the support base plate.

[0011] The upper part of the tie member is fitted with a first movable washer, and the first locking member presses the first movable washer against the top surface of the upper support bridge.

[0012] The positioning cover plate has a positioning scale groove, which is cross-shaped, and the center of the positioning scale groove, the center of the positioning cover plate, and the center of the embedded cylinder are arranged coaxially.

[0013] A slot is formed on the top inner wall of the pre-embedded cylinder, and the positioning cover plate rests on the slot.

[0014] A positioning method for a two-dimensional differential electromechanical pipeline pre-embedded positioning device through a floor slab includes the following steps:

[0015] Step 1: Assemble the tie rods onto the support base plate;

[0016] Step 2: Assemble the embedded cylinder to the pre-embedded position on the support base plate;

[0017] Step 3: Install the positioning cover plate onto the embedded cylinder and locate the embedded center;

[0018] Step 4: Adjust the position of the embedded cylinder according to the offset reading in the previous step;

[0019] Step 5: Place the positioning cover plate into the embedded cylinder, and use a measuring instrument to check the center position of the embedded cylinder to ensure that the center deviation of the embedded cylinder meets the specification requirements;

[0020] Step 6: Remove the positioning cover plate, tighten the first locking piece at the top of the tie member, and fix the embedded cylinder to the support base plate.

[0021] In step 1, after the tie member passes through the first adjustment groove on the support base plate, the second movable pad is inserted at the lower end, and the second locking member is screwed in but not tightened, so that the tie member can move in the first adjustment groove on the support base plate.

[0022] In step 2, the embedded cylinder is placed at the position to be embedded on the support base plate. At this time, there is a deviation between the placement position of the embedded cylinder and the embedded position. The tie piece is passed upward through the second adjustment groove of the upper support bridge and inserted into the first movable shim. The first locking piece is screwed in but not tightened. The embedded cylinder is rotated so that the second adjustment groove on the upper support bridge is perpendicular to the first adjustment groove on the support base plate.

[0023] In step 3, the positioning cover plate is placed into the slot at the top of the embedded cylinder, so that the positioning scale groove is aligned with the first adjustment groove and the second adjustment groove; the design embedded center of the embedded cylinder is precisely positioned using a measuring instrument, and the offset reading of the embedded center is read by referring to the positioning scale groove on the positioning cover plate.

[0024] In step 4, based on the horizontal and vertical coordinate values ​​of the offset reading, the embedded cylinder is moved along the first and second adjustment grooves respectively, so that the center of the embedded cylinder coincides with the designed embedded center.

[0025] Compared with the prior art, the present invention has the following advantages:

[0026] 1. Because the present invention is equipped with a two-dimensional adjusting tie member, the upper support bridge and the support base plate are tied together by the tie member and the locking member. This ensures the stable installation of the embedded cylinder on the support base plate and prevents slippage during concrete pouring. At the same time, it also ensures that the embedded cylinder can be flexibly disassembled and moved, avoids repeated drilling on the support base plate, avoids the reduction of the support base plate strength, increases the service life and reusability of the support base plate, and avoids quality problems such as pitting, honeycombing, and unevenness after the floor slab concrete is poured.

[0027] 2. Because the present invention is equipped with a two-dimensional adjustment tie-in component, the first and second adjustment grooves, which are perpendicular to each other, provide lateral and radial movement guidance for the embedded cylinder, making it easy to quickly and accurately adjust the embedded cylinder to the embedded position. This helps to improve the positioning efficiency and positioning accuracy of the embedded cylinder and solves the problem of difficult positioning of electromechanical pipelines through floor slabs.

[0028] 3. Because the present invention is equipped with a positioning cover plate, the deviation between the placement position of the pre-embedded cylinder and the pre-embedded position can be quickly determined and verified through the positioning scale groove on the positioning cover plate. Thus, the pre-embedded cylinder can be adjusted in two dimensions in combination with the first adjustment groove and the second adjustment groove, which is beneficial to improving the positioning accuracy of the pre-embedded cylinder. Attached Figure Description

[0029] Figure 1This is a top-view perspective view of the two-dimensional differential electromechanical pipeline pre-embedded positioning device for floor slabs according to the present invention;

[0030] Figure 2 This is a schematic diagram of the structure of the two-dimensional differential electromechanical pipeline penetration positioning device of the present invention.

[0031] Figure 3 This is a three-dimensional view from below of the two-dimensional differential electromechanical pipeline pre-embedded positioning device for floor slabs according to the present invention.

[0032] In the figure, 1 is the positioning cover plate; 2 is the embedded cylinder; 201 is the slot; 3 is the support base plate; 301 is the first adjustment groove; 4 is the upper support bridge; 401 is the second adjustment groove; 5 is the tie piece; 6 is the first locking piece; 7 is the first movable shim; 8 is the fixed shim; 9 is the second locking piece; 10 is the second movable shim; and 11 is the positioning scale groove. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0034] Please see the appendix Figure 1 A two-dimensional adjustable electromechanical pipeline penetration pre-embedded positioning device includes a positioning cover plate 1, a pre-embedded cylinder 2, a supporting base plate 3, an upper supporting bridge 4, and a two-dimensional adjustable tie member. The pre-embedded cylinder 2 is a hollow cylindrical structure with openings at the top and bottom. The lower end of the pre-embedded cylinder 2 abuts against the supporting base plate 3. The upper supporting bridge 4 is disposed inside the pre-embedded cylinder 2 and is arranged parallel to the supporting base plate 3. The two-dimensional adjustable tie member can be adjusted in a two-dimensional manner between the upper supporting bridge 4 and the supporting base plate 3, so that the pre-embedded cylinder 2 is installed at the pre-embedded position on the supporting base plate 3. The positioning cover plate 1 is detachably disposed on the top of the pre-embedded cylinder 2 and covers the upper supporting bridge 4 and the two-dimensional adjustable tie member directly above them.

[0035] The two-dimensional adjustment tie piece provides two-dimensional adjustment of the embedded position of the embedded cylinder 2, improving the accuracy of the embedded position. Because the two-dimensional adjustment tie piece has a two-dimensional adjustment function and uses a detachable tie method to connect the upper support bridge 4 and the support base plate 3, repeated drilling on the support base plate 3 is avoided, thus preventing the problem of reduced strength of the support base plate 3 and quality problems such as pitting, unevenness, and honeycombing after the concrete floor slab is poured.

[0036] The positioning cover plate 1 is used to assist in positioning the embedded cylinder 2 and to determine the deviation between the position of the embedded cylinder 2 and the pre-embedded position, thereby facilitating the adjustment and positioning of the embedded cylinder 2 and ensuring the accuracy of the pre-embedded position of the embedded cylinder 2. Preferably, the positioning cover plate 1 can be made of transparent acrylic material, allowing the upper support bridge 4, the two-dimensional adjustment tie piece and the support base plate 3 below to be seen, which facilitates positioning and adjustment.

[0037] Please see the appendix Figure 2The two-dimensional adjustable tie member includes a tie member 5, a first locking member 6, and a second locking member 9; a first adjusting groove 301 is formed on the support base plate 3 at the pre-embedded position of the pre-embedded cylinder 2, and a second adjusting groove 401 is formed in the middle of the upper support bridge 4; the lower end of the tie member 5 movably passes through the first adjusting groove 301 and is locked to the support base plate 3 by the first locking member 6, and the upper end of the tie member 5 movably passes through the second adjusting groove 401 and is locked to the upper support bridge 4 by the second locking member 9.

[0038] Preferably, the tie member 5 can be a tie bolt, and the first locking member 6 and the second locking member 9 can be nuts that match the tie bolt. The tie bolt and the nut can tie the upper support bridge 4 to the support base plate 3 together, thereby ensuring a reliable connection between the embedded cylinder 2 and the support base plate 3 and preventing displacement during concrete pouring. At the same time, the tie bolt and the nut have high disassembly and assembly flexibility and high reusability, and can be moved and adjusted along the first adjustment groove 301 and the second adjustment groove 401 to ensure that the embedded cylinder 2 has good adjustability.

[0039] Please see the appendix Figure 2 The first adjustment groove 301 and the second adjustment groove 401 are both elongated grooves, and the length direction of the first adjustment groove 301 is perpendicular to the length direction of the second adjustment groove 401.

[0040] The lengths of the first adjustment groove 301 and the second adjustment groove 401 can be adaptively adjusted according to actual adjustment needs. The vertically arranged elongated grooves can meet the adjustment in two length directions, thereby accurately adjusting the pre-embedded cylinder 2 to the pre-embedded position.

[0041] Please see the appendix Figure 2 The lower part of the tie member 5 is fitted with a fixing pad 8, which abuts against the top surface of the support base plate 3. The lower part of the tie member 5 is fitted with a second movable pad 10, and the second locking member 9 abuts the second movable pad 10 against the bottom surface of the support base plate 3.

[0042] The fixed shim 8 and the second movable shim 10 help improve the connection stability between the lower part of the tie member 5 and the support base plate 3.

[0043] Please see the appendix Figure 1 and attached Figure 2 The upper part of the tie member 5 is fitted with a first movable pad 7, and the first locking member 6 presses the first movable pad 7 against the top surface of the upper support bridge 4.

[0044] The placement of the first movable pad 7 helps to improve the connection stability between the upper part of the tie member 5 and the upper support bridge 4.

[0045] Please see the appendix Figure 1 and attached Figure 2The positioning cover plate 1 has a positioning scale groove 11, which has a cross-shaped structure, and the center of the positioning scale groove 11, the center of the positioning cover plate 1, and the center of the pre-embedded cylinder 2 are arranged coaxially.

[0046] The projection of the second adjustment groove 401 on the support base plate 3 forms a cross-shaped groove structure with the first adjustment groove 301. The positioning scale groove 11 of the cross-shaped structure matches the cross-shaped groove structure, so that the deviation between the placement position and the pre-embedded position of the pre-embedded cylinder 2 can be determined by the positioning scale groove 11 and the cross-shaped groove structure.

[0047] Please see the appendix Figure 1 and attached Figure 2 A slot 201 is formed on the top inner wall of the pre-embedded cylinder 2, and the positioning cover plate 1 is placed on the slot 201.

[0048] The slot 201 allows for the stable placement of the positioning cover 1, facilitating its installation and removal.

[0049] Please see the appendix Figure 1 To be continued Figure 3 A two-dimensional differential electromechanical pipe penetration and pre-embedded positioning method for floor slabs includes the following steps:

[0050] Step 1: Assemble the tie piece 5 onto the support base plate 3.

[0051] Specifically, after the tie member 5 passes through the first adjustment groove 301 on the support base plate 3, the second movable pad 10 is inserted at the lower end, and the second locking member 9 is screwed in but not tightened, leaving a small amount of space so that the tie member 5 can move within the first adjustment groove 301 on the support base plate 3.

[0052] Step 2: Assemble the embedded cylinder 2 to the embedded position on the supporting base plate 3.

[0053] Specifically, the embedded cylinder 2 is placed on the support base plate 3 at the desired embedding position. At this time, there may be a certain deviation between the placement of the embedded cylinder 2 and the actual embedding position. The tie rod 5 is passed upwards through the second adjustment groove 401 of the upper support bridge 4 and inserted into the first movable washer 7. The first locking member 6 is screwed in, but not tightened, and the embedded cylinder 2 is rotated so that the second adjustment groove 401 on the upper support bridge 4 is perpendicular to the first adjustment groove 301 on the support base plate 3.

[0054] Step 3: Install the positioning cover plate 1 onto the slot 201 at the top of the pre-embedded cylinder 2 and position the pre-embedded center.

[0055] Specifically, the positioning cover plate 1 is placed into the slot 201 at the top of the embedded cylinder 2, so that the positioning scale groove 11 is aligned with the first adjustment groove 301 and the second adjustment groove 401. The design embedded center of the embedded cylinder 2 is precisely positioned using a measuring instrument, and the offset reading of the embedded center is read by referring to the positioning scale groove 11 on the positioning cover plate 1.

[0056] A coordinate system is formed by a cross-shaped positioning groove 11. The center of the positioning groove 11, which is also the center of the pre-embedded cylinder 2, is the center of the coordinate system. A laser positioning device can be used to emit a laser beam to the design pre-embedded center of the support base plate 3. The laser beam forms a laser point on the positioning cover plate 1, which is the design pre-embedded center. The horizontal and vertical coordinate values ​​of the design pre-embedded center on the coordinate system can be read, which is the offset reading of the pre-embedded center.

[0057] Step 4: Adjust the position of the embedded cylinder 2 according to the offset reading in Step 3.

[0058] Specifically, based on the horizontal and vertical coordinate values ​​of the offset reading, the embedded cylinder 2 is moved along the first adjustment groove 301 and the second adjustment groove 401 respectively, so that the center of the embedded cylinder 2 coincides with the designed embedded center.

[0059] When moving the embedded cylinder 2, the direction of movement is determined by the sign of the offset reading, and the distance moved is the absolute value of the offset reading. For example, if the horizontal coordinate value of the offset reading is positive, the horizontal movement direction of the embedded cylinder 2 is towards the second and third quadrants of the coordinate system; if the vertical coordinate value of the offset reading is negative, the vertical movement direction of the embedded cylinder 2 is towards the first and second quadrants of the coordinate system. Thus, through two-dimensional movement in both the horizontal and vertical directions, the center of the embedded cylinder 2 is moved to the designed embedded center, ensuring the embedding accuracy of the embedded cylinder 2.

[0060] Step 5: Place the positioning cover plate 1 into the slot 201 at the top of the embedded cylinder 2, and use a measuring instrument to check the center position of the embedded cylinder 2 so that the center deviation of the embedded cylinder 2 meets the specification requirements.

[0061] The process of checking the center position of the embedded cylinder 2 is the same as the operation process of steps 3 and 4, and will not be repeated here. Just check the center position of the embedded cylinder 2 to the allowable deviation range so that the embedded cylinder 2 is in the pre-embedded position.

[0062] Step 6: Remove the positioning cover plate 1, tighten the first locking piece 6 at the top of the tie piece 5, and fix the embedded cylinder 2 to the support base plate 3. Then, subsequent construction such as concrete pouring can be carried out.

[0063] The above are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the invention. Therefore, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A two-dimensional differential electromechanical pipeline pre-embedded positioning device for floor slabs, characterized in that: The device includes a positioning cover plate (1), a pre-embedded cylinder (2), a supporting base plate (3), an upper supporting bridge (4), and a two-dimensional adjustment tie piece. The pre-embedded cylinder (2) is a hollow cylindrical structure with openings at the top and bottom. The lower end of the pre-embedded cylinder (2) abuts against the supporting base plate (3). The upper supporting bridge (4) is set inside the pre-embedded cylinder (2) and is set parallel to the supporting base plate (3). The two-dimensional adjustment tie piece can be adjusted in a two-dimensional manner between the upper supporting bridge (4) and the supporting base plate (3) so that the pre-embedded cylinder (2) is installed at the pre-embedded position on the supporting base plate (3). The positioning cover plate (1) is detachably set on the top of the pre-embedded cylinder (2) and covers the upper supporting bridge (4) and the two-dimensional adjustment tie piece directly above them. The two-dimensional adjustable tie member includes a tie member (5), a first locking member (6), and a second locking member (9); a first adjustment groove (301) is formed on the support base plate (3) at the pre-embedded position of the pre-embedded cylinder (2), and a second adjustment groove (401) is formed in the middle of the upper support bridge (4). The lower end of the tie member (5) can movably pass through the first adjustment groove (301) and is locked to the support base plate (3) by the first locking member (6). The upper end of the tie member (5) can movably pass through the second adjustment groove (401) and is locked to the upper support bridge (4) by the second locking member (9). The first adjustment groove (301) and the second adjustment groove (401) are both elongated grooves, and the length direction of the first adjustment groove (301) is perpendicular to the length direction of the second adjustment groove (401).

2. The two-dimensional adjustable mechanical conduit through-floor pre-burying and positioning device according to claim 1, characterized in that: The lower part of the tie member (5) is fitted with a fixing pad (8), which abuts against the top surface of the support base plate (3). The lower part of the tie member (5) is fitted with a second movable pad (10), and the second locking member (9) abuts the second movable pad (10) against the bottom surface of the support base plate (3).

3. The two-dimensional adjustable mechanical conduit through floor pre-burying and positioning device according to claim 1, characterized in that: The upper part of the tie member (5) is fitted with a first movable pad (7), and the first locking member (6) presses the first movable pad (7) against the top surface of the upper support bridge (4).

4. The two-dimensional adjustable mechanical conduit through floor pre-burying and positioning device according to claim 1, characterized in that: The positioning cover plate (1) has a positioning scale groove (11) formed on it. The positioning scale groove (11) has a cross-shaped structure, and the center of the positioning scale groove (11), the center of the positioning cover plate (1), and the center of the pre-embedded cylinder (2) are arranged coaxially.

5. The two-dimensional adjustment mechanical pipeline through floor pre-burying positioning device according to claim 1 or 4, characterized in that: A slot (201) is formed on the top inner wall of the pre-embedded cylinder (2), and the positioning cover plate (1) rests on the slot (201).

6. A positioning method using the two-dimensional differential electromechanical pipeline pre-embedded positioning device described in claim 1, characterized in that: Includes the following steps: Step 1: Assemble the tie rod (5) onto the support base plate (3); Step 2: Assemble the embedded cylinder (2) to the embedded position on the supporting base plate (3); Step 3: Install the positioning cover plate (1) onto the embedded cylinder (2) and position the embedded center; Step 4: Adjust the position of the embedded cylinder (2) according to the offset reading in Step 3; Step 5: Place the positioning cover plate (1) into the embedded cylinder (2), and use a measuring instrument to check the center position of the embedded cylinder (2) so that the center deviation of the embedded cylinder (2) meets the specification requirements; Step 6: Remove the positioning cover plate (1), tighten the first locking piece (6) at the top of the tie piece (5), and fix the embedded cylinder (2) to the support base plate (3).

7. The positioning method according to claim 6, characterized in that: In step 1, after the tie member (5) is passed through the first adjustment groove (301) on the support base plate (3), the second movable pad (10) is inserted at the lower end, and the second locking member (9) is screwed in but not tightened, so that the tie member (5) can move in the first adjustment groove (301) on the support base plate (3); In step 2, the embedded cylinder (2) is placed on the support base plate (3) at the position to be embedded. At this time, there is a deviation between the placement position of the embedded cylinder (2) and the embedded position. The tie piece (5) is passed upward through the second adjustment groove (401) of the upper support bridge (4) and inserted into the first movable pad (7). The first locking piece (6) is screwed in but not tightened. The embedded cylinder (2) is rotated so that the second adjustment groove (401) on the upper support bridge (4) and the first adjustment groove (301) on the support base plate (3) are perpendicular to each other.

8. The positioning method according to claim 6, characterized in that: In step 3, the positioning cover plate (1) is placed on the slot (201) at the top of the pre-embedded cylinder (2) so that the positioning scale groove (11) is aligned with the first adjustment groove (301) and the second adjustment groove (401); the design pre-embedded center of the pre-embedded cylinder (2) is precisely positioned using a measuring instrument, and the offset reading of the pre-embedded center is read by referring to the positioning scale groove (11) on the positioning cover plate (1); In step 4, based on the horizontal and vertical coordinate values ​​of the offset reading, the embedded cylinder (2) is moved along the first adjustment groove (301) and the second adjustment groove (401) respectively, so that the center of the embedded cylinder (2) coincides with the design embedded center.

Citation Information

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