Device for measuring concentricity of sleeve

Abstract

The utility model provides a device for measuring the concentricity of a sleeve, belongs to the technical field of building construction, and effectively solves the problem that the concentricity detection of a floor sleeve is not changed at present. According to the technical scheme, the device comprises a fixing base, a sliding rod is fixedly connected to the center of the top of the fixing base, a sliding base is slidably connected to the outer side of the sliding rod, a plurality of horizontally-arranged sliding rails are fixedly connected to the outer side of the fixing base in the circumferential direction of the fixing base at equal intervals, sliding blocks are slidably connected to the sliding rails, and laser heads are vertically and downwards arranged on the sliding blocks; and a connecting rod is connected between each sliding block and the sliding seat. The device for measuring the concentricity of the casing pipe has the beneficial effects that the casing pipe deviation of different floors can be quickly measured, and the pre-embedded inclined casing pipe can be detected.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, and more specifically, to a device for measuring the concentricity of a sleeve. Background Art

[0002] During the construction of building mechanical and electrical reserved embedment, it is often necessary to embed sleeves for vertical pipes such as drainage risers and fire protection risers. Whether the sleeves embedded on different upper and lower floors are aligned is an important factor affecting the later pipe installation. We usually use concentricity to measure whether the sleeve embedment is aligned, that is, to see the distance between the center of the sleeve and the central axis of the pipe. Existing measurement techniques: First, select the sleeve on one floor as the standard; hang a plumb line vertically downward from the center of the sleeve hole to the lower floor, and this plumb line is used to simulate the central axis of the pipe; the length of the plumb line is generally about 30m. After the plumb line stabilizes, fix the line on the lowest floor; send someone to measure the position of the plumb line in the sleeve on each floor, and calculate whether the outer edge of the pipe will collide with the sleeve. Second: Select the sleeve on one floor as the standard; use a leveling instrument to emit a vertical laser beam downward from the center of the sleeve hole to simulate the central axis of the pipe; send someone to measure the position of the laser spot in the sleeve on each floor with a laser target board, and calculate whether the outer edge of the pipe will collide with the sleeve.

[0003] During the existing construction process, it is necessary to send someone to measure each floor and calculate the deviation between the sleeve and the pipe to comprehensively judge whether modification is needed. Since we don't know whether the sleeve selected as the reference itself is offset. Usually, we will count the number of offset sleeves, and then repeatedly adjust the position of the simulated central axis of the pipe (hanging line or single-point laser point). When the number of measured offset sleeves is the least, the measurement can be completed, and at the same time, record the position of this central axis and the position of the offset sleeves for later construction. Disadvantages of the existing technology: 1. It is necessary to repeatedly adjust the position of the simulated central axis of the pipe. Each adjustment requires sending someone to measure floor by floor, which costs a lot of labor; 2. The actual outer diameter of the sleeve is not the DN model (for example, the outer diameter of a DN100 pipe is 114mm, and the outer diameter of a DN150 pipe is 169mm, neither of which is an integer), and the calculation amount during measurement is large and it is easy to make mistakes.

[0004] Therefore, how to solve the above technical problems becomes the topic faced by the utility model. Summary of the Utility Model

[0005] Aiming at the problems existing in the prior art, the purpose of the utility model is to provide a device for measuring the concentricity of a sleeve, which can quickly measure the deviation of sleeves on different floors and detect the embedded skew sleeves.

[0006] The technical solution adopted by the present utility model to solve its technical problems is as follows: The present utility model provides a device for measuring the concentricity of a casing, which includes a cylindrical fixed seat. At the center of the top of the fixed seat, a cylindrical sliding rod is fixedly connected and arranged vertically upward. A circular sliding seat is slidably connected to the outer side of the sliding rod;

[0007] A plurality of horizontally arranged sliding rails are fixedly connected to the outer side of the fixed seat at equal intervals along its circumferential direction. Each sliding rail is slidably connected with a sliding block, and a laser head is vertically arranged downward on each sliding block;

[0008] A connecting rod is connected between each sliding block and the sliding seat.

[0009] The sliding rail is cylindrical. A through sliding hole that slidably cooperates with the sliding rail is opened at the center of the sliding block. Two pairs of lower ear plates are symmetrically arranged on both sides of the top of the sliding block. Corresponding to each pair of lower ear plates, a pair of upper ear plates are arranged on the outer wall of the sliding seat. A lower rotating rod is fixedly and horizontally connected between the two sides of each pair of lower ear plates away from the fixed seat, and an upper rotating rod is fixedly and horizontally connected between the upper ear plates;

[0010] The two ends of the connecting rod are respectively fixedly connected with an upper connecting plate and a lower connecting plate. An upper connecting hole is opened on the upper connecting plate, and a lower connecting hole is opened on the lower connecting plate. The upper connecting hole is sleeved on the outer side of the upper rotating rod and rotatably cooperates with the upper rotating rod. The lower connecting hole is sleeved on the outer side of the lower rotating rod and rotatably cooperates with the lower rotating rod.

[0011] An opening penetrating to the outside of the sliding block is opened at the bottom of the sliding hole. A pair of fixing plates are symmetrically arranged on both sides of the opening. Two bolts are symmetrically arranged on both sides of the two fixing plates. The bolts are threadedly engaged with fastening nuts;

[0012] There are eight sliding rails.

[0013] One side surface of the sliding block is a rectangular vertical surface structure, and four internal threaded holes are arranged in a rectangular distribution at the vertical surface;

[0014] Four adjusting holes are respectively opened at the four corners of a rectangular adjusting plate corresponding to the internal threaded holes. Screws are connected between the adjusting holes and the corresponding internal threaded holes. The diameter of the adjusting hole is larger than the diameter of the internal threaded hole, and the diameter of the adjusting hole is smaller than the diameter of the nut part at the end of the screw;

[0015] An arc-shaped card slot that cooperates with the laser head is arranged at the center of the adjusting plate. The diameter of the card slot is smaller than the diameter of the laser head body, and the card slot is made of elastic plastic material.

[0016] A positioning ring sleeving the outer side of the sliding rod and slidably mating with the sliding rod is arranged on the bottom side of the sliding seat, and positioning bolts are arranged between the two sides of the positioning ring and the sliding rod;

[0017] A battery compartment is arranged on the top of the sliding seat, and the battery in the battery compartment is electrically connected to the laser head.

[0018] The fixed seat, the sliding seat and the sliding block are all made of plastic materials;

[0019] The sliding rod, the sliding rail and the connecting rod are all made of metal materials.

[0020] When the utility model is actually used: The fixed seat can be installed on a precise leveling device to realize vertical projection to simulate a pipeline. The precise leveling device is a mature product and is widely used in use scenarios such as a spirit level and photography. Select a sleeve on the upper floor as a reference, project the light beam downward along the center of the sleeve, and the construction worker looks down through the sleeve to check whether there is a light spot projected outside the sleeve. If there is a light spot projected outside the sleeve, it indicates that the sleeve is offset. After finding that the sleeve is offset, adjust the position of the device so that the instrument can project downward to the most floors. At this time, these sleeves can all meet the pipeline installation requirements. Use a laser target to record the position where the simulated pipeline passes through this sleeve to be used as a reference for the subsequent formal pipeline installation. It is also possible to measure how much the lower sleeve is specifically deviated by adjusting the outer diameter of the simulated pipeline on the topmost floor. By reducing the size, the simulated pipeline just passes through the offset sleeve. At this time, measure the outer diameter of the simulated pipeline with a laser target plate on the topmost floor, and the difference from the original outer diameter can obtain the offset value.

[0021] By adjusting the height of the sliding seat to drive the horizontal position of the sliding block, the position of the entire laser head is synchronously adjusted to be applicable to the detection of sleeves with different pipe diameters within a certain range. The positioning bolt positions the sliding seat, and the bolt and the fastening nut position the sliding block to ensure the stability of the measurement position. Since the diameter of the adjustment hole is larger than the diameter of the internal threaded hole, the position of the adjustment plate can be adjusted within a certain range, so that the direction of the laser beam can be finely adjusted to ensure its perpendicularity.

[0022] The beneficial effects of the utility model are as follows:

[0023] 1. The utility model is simple to operate and convenient to measure, without the need for personnel to climb up and down the stairs for measurement and calculation, saving a large amount of manpower and time, improving work efficiency and detection accuracy;

[0024] 2. The utility model has strong applicability and can be quickly adjusted to be applicable to the measurement of sleeves with different pipe diameters;

[0025] 3. The utility model has a small and compact structure, and is convenient to carry and use.

[0026] 3. The utility model has a small and compact structure, and is convenient to carry and use. Brief Description of the Drawings

[0027] Figure 1 This is the front view of the present utility model;

[0028] Figure 2 This is the top view of the present utility model;

[0029] Figure 3 This is the schematic diagram of the three-dimensional structure of the present utility model;

[0030] Figure 4 is Figure 3 the enlarged schematic diagram of area A of;

[0031] Figure 5 This is the schematic diagram of the separated state of the partial structure of the sliding block of the present utility model;

[0032] Figure 6 This is the schematic diagram of the three-dimensional structure of the sliding seat of the present utility model;

[0033] Figure 7 This is the schematic diagram of the three-dimensional structure of the connecting rod of the present utility model.

[0034] Among them, the reference numerals are: 1, fixed seat; 2, sliding rod; 3, sliding seat; 301, upper ear plate; 302, upper rotating rod; 303, positioning ring; 304, positioning bolt; 305, battery compartment; 4, slide rail; 5, sliding block; 501, lower ear plate; 502, lower rotating rod; 503, opening; 504, fixing plate; 505, bolt; 506, fastening nut; 507, internal thread hole; 508, adjusting plate; 509, adjusting hole; 510, screw; 511, card slot; 512, sliding hole; 6, laser head; 7, connecting rod; 701, upper connecting plate; 702, lower connecting plate; 703, upper connecting hole; 704, lower connecting hole. Detailed Embodiment

[0035] To clearly illustrate the technical features of this solution, the following will elaborate on this solution through specific embodiments.

[0036] Refer to Figures 1 to 7 , the present utility model is a device for measuring the concentricity of a casing, including a cylindrical fixed seat 1, a cylindrical sliding rod 2 fixedly connected to the center of the top of the fixed seat 1 and vertically upward, a circular sliding seat 3 slidably connected to the outside of the sliding rod 2, a plurality of horizontally arranged slide rails 4 fixedly connected to the outside of the fixed seat 1 at equal intervals along its circumferential direction, a sliding block 5 slidably connected to each slide rail 4, a laser head 6 vertically downward arranged on each sliding block 5, and a connecting rod 7 connected between each sliding block 5 and the sliding seat 3.

[0037] The slide rail 4 is cylindrical. A through sliding hole 512 that slidably mates with the slide rail 4 is provided at the center of the sliding block 5. On both sides of the top of the sliding block 5, two pairs of lower ear plates 501 are symmetrically arranged. Corresponding to each pair of lower ear plates 501, a pair of upper ear plates 301 are provided on the outer wall of the sliding seat 3. A lower rotating rod 502 is fixedly and horizontally connected between the sides of each pair of lower ear plates 501 away from the fixed seat 1. An upper rotating rod 302 is fixedly and horizontally connected between the upper ear plates 301. Both ends of the connecting rod 7 are fixedly connected with an upper connecting plate 701 and a lower connecting plate 702 respectively. The upper connecting plate 701 is provided with an upper connecting hole 703, and the lower connecting plate 702 is provided with a lower connecting hole 704. The upper connecting hole 703 is sleeved outside the upper rotating rod 302 and rotatably mates with the upper rotating rod 302. The lower connecting hole 704 is sleeved outside the lower rotating rod 502 and rotatably mates with the lower rotating rod 502. The fixed seat 1, the sliding seat 3, and the sliding block 5 are all made of plastic material, and the sliding rod 2, the slide rail 4, and the connecting rod 7 are all made of metal material.

[0038] An opening 503 that penetrates to the outside of the sliding block 5 is provided at the bottom of the sliding hole 512. A pair of fixing plates 504 are symmetrically arranged on both sides of the opening 503. Two bolts 505 are symmetrically arranged on both sides of the two fixing plates 504. The bolts 505 are threadedly mated with fastening nuts 506. There are eight slide rails 4. One side surface of the sliding block 5 is a rectangular vertical surface structure. Four internal threaded holes 507 arranged in a rectangular pattern are provided at the vertical surface. Four adjusting holes 509 are respectively provided at the four corners of the rectangular adjusting plate 508 corresponding to the internal threaded holes 507. A screw 510 is connected between the adjusting hole 509 and the corresponding internal threaded hole 507. The diameter of the adjusting hole 509 is larger than the diameter of the internal threaded hole 507, and the diameter of the adjusting hole 509 is smaller than the diameter of the nut part at the end of the screw 510. An arc-shaped card slot 511 that mates with the laser head 6 is provided at the center of the adjusting plate 508. The diameter of the card slot 511 is smaller than the diameter of the body of the laser head 6. The card slot 511 is made of elastic plastic material. A positioning ring 303 that is sleeved outside the sliding rod 2 and slidably mates with the sliding rod 2 is provided at the bottom side of the sliding seat 3. A positioning bolt 304 is fitted between the two sides of the positioning ring 303 and the sliding rod 2. A battery compartment 305 is provided at the top of the sliding seat 3. The battery in the battery compartment 305 is electrically connected to the laser head 6.

[0039] During actual use: The fixed base 1 can be installed on a precise leveling device to achieve vertical projection of a simulated pipeline. The precise leveling device is a mature product and is widely used in scenarios such as leveling instruments and photography. Select a casing on the upper floor as a reference, project the light beam downward along the exact center of the casing, and the construction workers look down through the casing to check if there is a light spot projected outside the casing. If there is a light spot projected outside the casing, it indicates that the casing is offset. After discovering the offset of the casing, adjust the position of the device so that the instrument can project to the maximum number of floors downward. At this time, these casings can all meet the requirements for pipeline installation. Use a laser target to record the position where the simulated pipeline passes through this casing, so as to provide a reference for the subsequent formal pipeline installation. It is also possible to measure how much the lower casing is specifically offset by adjusting the outer diameter of the simulated pipeline on the topmost floor. By reducing the size, the simulated pipeline can just pass through the offset casing. At this time, measure the outer diameter of the simulated pipeline with a laser target plate on the topmost floor, and the difference from the original outer diameter can be used to obtain the offset value.

[0040] By adjusting the height of the sliding base 3 to drive the horizontal position of the sliding block 5, the positions of 8 laser heads 6 are synchronously adjusted to be applicable to the detection of casings with different pipe diameters within a certain range. The positioning bolt 304 positions the sliding base 3, and the bolt 505 and the fastening nut 506 position the sliding block to ensure the stability of the measurement position. Since the diameter of the adjustment hole 509 is larger than the diameter of the internal threaded hole 507, the position of the adjustment plate 508 can be adjusted within a certain range, so that the direction of the laser beam can be finely adjusted to ensure its perpendicularity.

[0041] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A device for measuring the concentricity of a casing, characterized in that: It comprises a cylindrical fixing seat (1), a cylindrical sliding rod (2) vertically arranged upwards is fixedly connected to the top center of the fixing seat (1), and a circular ring-shaped sliding seat (3) is slidably connected to the outer side of the sliding rod (2); A plurality of horizontally arranged slide rails (4) are fixedly connected to the outer side of the fixed seat (1) at equal intervals along the circumferential direction thereof, each of the slide rails (4) is slidably connected to a slide block (5), and each of the slide blocks (5) is vertically downwardly provided with a laser head (6); A connecting rod (7) is connected between each sliding block (5) and the sliding seat (3).

2. The device for measuring the concentricity of a casing according to claim 1, characterized in that: The slide rail (4) is cylindrical, and a sliding hole (512) penetrating therethrough and slidingly cooperating with the slide rail (4) is opened in the center of the slide block (5). Two pairs of lower ear plates (501) are symmetrically arranged on both sides of the top of the slide block (5), and a pair of upper ear plates (301) are arranged on the outer wall of the slide seat (3) corresponding to each pair of the lower ear plates (501). A lower rotating rod (502) is fixedly connected horizontally between the sides of each pair of the lower ear plates (501) away from the fixed seat (1), and an upper rotating rod (302) is fixedly connected horizontally between the upper ear plates (301); The two ends of the connecting rod (7) are respectively fixedly connected with an upper connecting plate (701) and a lower connecting plate (702); the upper connecting plate (701) is provided with an upper connecting hole (703); the lower connecting plate (702) is provided with a lower connecting hole (704); the upper connecting hole (703) is sleeved on the outer side of the upper rotating rod (302) and is rotatably engaged with the upper rotating rod (302); the lower connecting hole (704) is sleeved on the outer side of the lower rotating rod (502) and is rotatably engaged with the lower rotating rod (502).

3. The device for measuring the concentricity of casing according to claim 2, characterized in that: The bottom of the sliding hole (512) is provided with an opening (503) penetrating to the outside of the sliding block (5), a pair of fixing plates (504) are symmetrically arranged on both sides of the opening (503), two bolts (505) are symmetrically arranged on both sides of the two fixing plates (504), and the bolts (505) are threadedly matched with fastening nuts (506); There are eight slide rails (4).

4. The device for measuring the concentricity of a casing according to claim 3, characterized in that: One side surface of the sliding block (5) is a rectangular vertical structure, and four internal screw holes (507) distributed in a rectangular shape are arranged on the vertical surface; Four adjusting holes (509) are respectively opened at the four corners of the rectangular adjusting plate (508) corresponding to the inner screw hole (507), and screws (510) are connected between the adjusting holes (509) and the corresponding inner screw holes (507), and the diameter of the adjusting holes (509) is larger than the diameter of the inner screw hole (507), and the diameter of the adjusting holes (509) is smaller than the diameter of the nut portion at the tail end of the screw (510); The center of the adjustment plate (508) is provided with an arc-shaped slot (511) that matches the laser head (6); the diameter of the slot (511) is smaller than the diameter of the laser head (6) body; the slot (511) is made of elastic plastic material.

5. The device for measuring the concentricity of casing according to claim 4, characterized in that: The bottom side of the sliding seat (3) is provided with a positioning ring (303) which is sleeved on the outside of the sliding rod (2) and slidably matched with the sliding rod (2), and positioning bolts (304) are matched between the two sides of the positioning ring (303) and the sliding rod (2); A battery compartment (305) is provided on the top of the sliding seat (3), and the battery in the battery compartment (305) is electrically connected to the laser head (6).

6. The device for measuring the concentricity of casing according to claim 1, characterized in that: The fixed seat (1), the sliding seat (3) and the sliding block (5) are all made of plastic; The slide rod (2), the slide rail (4) and the connecting rod (7) are all made of metal.

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