CN115095145B - Pre-buried sleeve group pre-buried positioning device and pre-buried positioning method - Google Patents

Pre-buried sleeve group pre-buried positioning device and pre-buried positioning method Download PDF

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Publication number
CN115095145B
CN115095145B CN202210597056.4A CN202210597056A CN115095145B CN 115095145 B CN115095145 B CN 115095145B CN 202210597056 A CN202210597056 A CN 202210597056A CN 115095145 B CN115095145 B CN 115095145B
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laser pen
embedded
buried
ring support
laser
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CN115095145A (en
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赵思瑞
梁伟
刘伟
谷玉章
刘新
宋永新
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Shandong Shenbo Construction Engineering Co ltd
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Shandong Shenbo Construction Engineering Co ltd
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G15/00Forms or shutterings for making openings, cavities, slits, or channels
    • E04G15/06Forms or shutterings for making openings, cavities, slits, or channels for cavities or channels in walls of floors, e.g. for making chimneys
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G17/00Connecting or other auxiliary members for forms, falsework structures, or shutterings

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)

Abstract

The invention discloses a pre-buried sleeve group pre-buried positioning device and a pre-buried positioning method. The invention has high alignment speed, when the nail points are aligned, the laser pen is only moved to the corresponding radius position, and then slides for one circle around the fixed support, so that a plurality of nail points can be aligned, the thin steel wires can be hung into the hook body before being twisted, the thin steel wires can be twisted into one strand by rotating the laser pen, in the twisting process, the thin steel wires are not easy to move in a deviated manner, and the embedded sleeve is reliably positioned.

Description

Pre-buried sleeve group pre-buried positioning device and pre-buried positioning method
Technical Field
The invention relates to a pre-buried sleeve group pre-buried positioning device and a pre-buried positioning method.
Background
When a floor slab is poured, the pipeline through the floor slab is required to be embedded with holes, the embedded sleeves are fixed on the wood formwork at the lower layer of the floor slab, the embedded sleeves are folded to form the pipeline embedded holes after concrete is poured, the embedded sleeves are required to be fixed at the appointed positions on the wood formwork in order to ensure the accuracy of the positions of the embedded holes, the existing embedded sleeve positioning method comprises the steps of firstly drawing the excircle positions of the embedded sleeves on the wood formwork, uniformly nailing a plurality of screws which are bound with thin steel wires on the excircle positions of the embedded sleeves on the wood formwork, placing the embedded sleeves among a plurality of thin steel wires, and screwing the thin steel wires into a strand of embedded sleeve to tightly bind the embedded sleeves.
According to the method, the excircle position of the embedded sleeve is required to be accurately drawn on the wood template before positioning, a plurality of thin steel wires are not easy to be assembled together before screwing the thin steel wires, and the working efficiency is low. Is not suitable for positioning the embedded sleeve group.
Disclosure of Invention
The invention aims to solve the technical problems that: the embedded sleeve group embedded positioning device and the embedded positioning method adopting the embedded sleeve group embedded positioning device can be used for rapidly positioning the embedded sleeve group.
In order to solve the technical problems, the laser pen comprises a circular ring support, an L-shaped support and a laser pen, wherein the L-shaped support comprises a vertical rod and a cross rod which are connected into an L shape, the lower end of the vertical rod is arranged on the circular ring support in a sliding manner along the circumference of the circular ring support through a sliding seat, the cross rod is positioned above the circular ring support, a sliding groove extending in the length direction is arranged on the cross rod, the laser pen is arranged in the sliding groove in a sliding manner, light rays of the laser pen are vertically projected on the bottom surface of the circular ring support, and a scale is arranged on the cross rod and used for indicating the distance between the projection point of the bottom surface of the circular ring support and the circle center of the circular ring support.
Preferably, the laser pen set up in the spout through the registration arm, the spout longitudinal section be the cross, link up the horizontal pole from top to bottom in the spout, the left and right sides of registration arm respectively is provided with a slider, two sliders are located the left and right sides cell body of spout respectively, the lower extreme of registration arm stretches out the below of horizontal pole, the inner wall of registration arm is fixed with down the spacing ring, be fixed with the spacing ring on the outer wall of laser pen, the laser pen inserts in the registration arm, the coil spring of cover on the laser pen is held between the spacing ring and the spacing ring down, the lower extreme of laser pen is provided with the coupler body, be provided with laser transmission hole on the coupler body, when the laser pen is not pressed, the coupler body is retracted into the registration arm, when the laser pen is pressed, the coupler body can stretch out under the registration arm.
Preferably, the coupler body comprises a circular plate, the circular plate is connected with the laser pen through a connecting plate, a laser transmission hole is formed in the center of the circular plate, a notch communicated with the laser transmission hole is formed in one side of the circular plate, the notch is splayed, the small opening end of the notch is connected with the laser transmission hole, the large opening end of the notch is arranged on the outer circle of the circular plate, a plurality of line grooves staggering the connecting plate and the notch are uniformly distributed on the circumference of the circular plate, the line grooves are splayed, the small opening end of the line grooves points to the laser transmission hole and are not communicated with the laser transmission hole, the large opening end of the notch is arranged on the outer circle of the circular plate, the notch and the connecting plate are located on two sides of the laser transmission hole, a plane thrust bearing is arranged on the lower limiting ring, and the plane thrust bearing is clamped between the lower limiting ring and the spiral spring.
Preferably, the lower end of the spiral spring is fixedly connected with the upper shaft collar of the planar thrust bearing, the upper end of the spiral spring is fixed with the upper limiting ring, and the lower shaft collar of the planar thrust bearing is bonded with the lower limiting ring.
Preferably, the upper end of the laser pen is provided with handles extending towards two sides of the laser pen.
Preferably, one end of the chute far away from the vertical rod is provided with a blocking block, and when the positioning pipe moves to be attached to the blocking block, the light of the laser pen is vertically projected on the circular ring support center.
Preferably, the ring support is provided with an angle scale for indicating the angle of the ring support.
Preferably, the cross bar is provided with a locking groove which is communicated with the sliding groove, and the locking groove is provided with a locking screw for locking the positioning tube in a sliding way.
The embedded sleeve group embedded positioning method adopts any one of the embedded sleeve group embedded positioning devices.
The invention relates to a method for embedding and positioning an embedded sleeve group, which adopts the embedded sleeve group embedding and positioning device of any one of the above steps, and comprises the following steps: (1) a floor plank sheathing; (2) Marking the central position of each embedded pipe of the embedded pipe group on the wood template to form an embedded pipe central mark; (3) installing the embedded pipe group on the wood template: the method comprises the steps of (3-1) placing a ring support on a wood template and sleeving the ring support outside a central mark of an embedded pipe, (3-2) adjusting a laser pen to the position of aligning the light to the center of the ring support, moving the ring support to enable the light of the laser pen to be projected onto the central mark of the embedded pipe, (3-3) pushing the laser pen to slide in a sliding groove for the distance of the outer radius of a sleeve to be embedded, taking a plurality of nails bound with thin steel wires, pushing a sliding seat to slide on the ring support for a circle, driving one nail to the light projection point of the laser pen on the wood template every time the sliding seat is at a set angle, (3-4) placing a sleeve to be embedded on the wood template and sleeving the sleeve to the central mark of the embedded pipe, adjusting the laser pen to the position of aligning the center of the ring support, pushing down the laser pen to enable the hook body to extend out of the locating pipe, pushing all the thin steel wires on the wood template to be squeezed into the laser pen from the opening and folded, then clamping the thin steel wires into a same angle of the same line groove, enabling the free ends of the thin steel wires to be located below the line groove, loosening the laser pen to enable the locating pipe, (3-4), screwing all the thin steel wires on the wood template to be tightly fastened to the sleeve on the wood template until the wood template is completed, (6).
The beneficial effects of the invention are as follows: the positioning device aligns the central mark of the embedded pipe through the laser pen, the ring support can be placed at the correct position only by enabling light to face the central mark of the embedded pipe, the alignment speed is high, when the nail point is aligned, the laser pen is only moved to the corresponding radius position, the laser pen slides around the fixed support for one circle, a plurality of nail points can be aligned, the thin steel wires can be hung into the hook body before being twisted, the thin steel wires can be twisted into one strand through rotating the laser pen, in addition, the thin steel wires are not easy to move in a deflecting manner in the twisting process, and the embedded sleeve is reliably positioned. Therefore, the embedded positioning speed is high, and the working efficiency is high.
Drawings
FIGS. 1 and 2 are schematic perspective views of a positioning device in two orientations of a hook body in an extended state;
FIGS. 3 and 4 are schematic perspective views of the positioning device in two orientations with the hook body not extended;
FIG. 5 is a schematic diagram of the connection structure of the laser pen and the sleeve;
FIG. 6 is a schematic view of the lower end structure of the laser pen of example 1;
FIG. 7 is a schematic view of the disk of example 2;
FIG. 8 is a schematic perspective view of example 3;
in the figure: 1. the laser device comprises a ring support, 2, a sliding seat, 3, a vertical rod, 4, a cross rod, 4-1, a sliding groove, 5, a laser pen, 6, a handle, 7, a blocking block, 8, a positioning tube, 9, a circular plate, 10, a spiral spring, 11, an upper limiting ring, 12, a planar thrust bearing, 13, a lower limiting ring, 14, a connecting plate, 15, a notch, 16, a laser transmission hole, 17, a line slot, 18, a locking screw, 19 and a scale.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The embedded sleeve group embedded positioning device shown in the figures 1-6 comprises a circular ring support 1, an L-shaped support and a laser pen 5,L-shaped support, wherein the L-shaped support comprises a vertical rod 3 and a cross rod 4 which are connected into an L shape, the lower end of the vertical rod 3 is fixedly provided with a sliding seat 2, the sliding seat 2 can be arranged on the circular ring support 1 in a sliding manner along the circumference of the circular ring support 1, the cross rod 4 is positioned above the circular ring support 1, a sliding groove 4-1 extending in the length direction is arranged on the cross rod 4, one end of the sliding groove 4-1 far away from the vertical rod 3 is provided with a blocking block 7, one end of the blocking block 7 facing the vertical rod 3 is provided with an arc surface identical to the outer circle of a positioning tube 8, the laser pen 5 is arranged in the sliding groove 4-1 through the positioning tube 8, the longitudinal section of the sliding groove 4-1 is in a cross shape, the sliding groove 4-1 vertically penetrates through the cross rod 4, the left side and the right side of the positioning tube 8 are respectively provided with a sliding block, the two sliding blocks are respectively positioned in the left groove body and the right groove body of the sliding groove, the lower end of the positioning tube 8 extends out to the lower part of the cross rod 4, the inner wall of the positioning tube 8 is fixedly provided with a lower limiting ring 13, the outer wall of the laser pen 5 is fixedly provided with an upper limiting ring 11, the laser pen 5 is inserted in the positioning tube 8, a spiral spring 10 sleeved on the laser pen 5 is arranged between the upper limiting ring 11 and the lower limiting ring 13, the lower end of the laser pen 5 is provided with a hook body, as shown in figure 6, the hook body comprises a circular plate 9, the circular plate 9 is connected with the laser pen 5 through a connecting plate 14, the center of the circular plate 9 is provided with a laser transmission hole 16, one side of the circular plate 9 is provided with a notch 15 communicated with the laser transmission hole 16, the notch 15 is in a splayed shape, the small opening end of the notch 15 is connected with the laser transmission hole 16, the large opening end of the notch 15 is arranged on the outer circle of the circular plate 9, the notch 15 and the connecting plate 14 are positioned on two sides of the laser transmission hole 16, the lower limiting ring 13 is provided with a planar thrust bearing 12, and the planar thrust bearing 12 is clamped between the lower limiting ring 13 and the spiral spring 10. When the laser pen 5 is not pressed, the hook body is retracted into the positioning tube 8, and when the laser pen 5 is pressed, the hook body can extend out below the positioning tube 8. When the positioning tube 8 moves to be attached to the blocking piece 7, the light of the laser pen 5 vertically projects on the center of the circular ring support 1. As shown in fig. 4, the cross bar 4 is provided with a scale 19, and the scale 19 is used for indicating the distance between the projection point of the laser pen 5 on the bottom surface of the ring support 1 and the center of the ring support. The scale may be a scale printed directly on the rail 4. Reference may be made to the scale on the ruler. The angle scale for indicating the angle of the ring support 1 is arranged on the ring support 1, and can refer to the scale of the protractor, or only a few scale points can be arranged, one scale line is arranged every 90 degrees in proportion, and four scale lines are arranged in total.
The lower end of the spiral spring 10 is fixedly connected with an upper shaft collar of the planar thrust bearing 12, the upper end of the spiral spring 10 is fixed with an upper limiting ring 11, and a lower shaft collar of the planar thrust bearing 12 is adhered with a lower limiting ring 13. The upper end of the laser pen 5 is provided with a handle 6 extending towards the two sides of the laser pen 5. Thereby facilitating control of the rotation of the laser pen 5.
Example 2
As shown in fig. 7, the difference between the present embodiment and the first embodiment is that a plurality of line grooves 17 with staggered connection plates 14 and notches 15 are uniformly distributed on the circumference of the circular plate 9, the line grooves 17 are splayed, the small opening ends of the line grooves 17 point to the laser transmission holes 16 and are not communicated with the laser transmission holes 16, and the large opening ends of the line grooves 17 are arranged on the outer circle of the circular plate 9.
Example 3
As shown in fig. 8, the difference between this embodiment and the first embodiment is that a locking groove is provided on the cross bar 4, the locking groove is provided at one side of the cross bar 4, the locking groove is communicated with the chute 4-1, a locking screw 18 for locking the positioning tube is slidably provided in the locking groove, the locking screw 18 is in threaded connection with one of the sliding blocks, and locking of the positioning tube 8 is controlled by rotating the locking screw 18.
The invention relates to a method for embedding and positioning an embedded sleeve group, which adopts the embedded sleeve group embedded positioning device and comprises the following steps: (1) a floor plank sheathing; (2) Marking the central position of each embedded pipe of the embedded pipe group on the wood template to form an embedded pipe central mark; (3) installing the embedded pipe group on the wood template: (3-1) placing the ring support 1 on a wood template and sleeving the wood template outside an embedded pipe center mark, (3-2) adjusting the laser pen 5 to a position where light is aligned with the center of the ring support 1, namely pushing the positioning pipe 8 to be attached to the blocking block 7, screwing the locking screw when the locking screw is arranged, moving the ring support 1 to enable the light of the laser pen 5 to be projected on the embedded pipe center mark, (3-3) pushing the laser pen 5 to slide in the sliding groove 4-1 for the distance of the outer circle radius of the sleeve to be embedded, so that the light of the laser pen 5 is directly projected on the outer circle of the embedded sleeve to be embedded, taking a plurality of nails bound with thin steel wires, pushing the sliding seat 2 to slide on the ring support 1 for one circle, driving one nail to be projected on the light projection point of the laser pen 5 on the wood template every time when the positioning pipe is slid to a set angle, (3-4) placing the sleeve to be pre-buried on the wood template and sleeving the sleeve outside the central mark of the pre-buried pipe, adjusting the laser pen 5 to the position of aligning the light to the center of the circular ring support 1, pressing down the laser pen 5 to enable the hook body to extend out of the positioning pipe 8, extruding all the thin steel wires pinned on the wood template from the notch 15 into the laser transmission hole 16 and clamping the thin steel wires into a line groove 17 with the same angle after turning over, enabling the free ends of the thin steel wires to be positioned below the line groove 17, loosening the laser pen 5 to enable the laser pen 5 to retract into the positioning pipe 8, (3-5) rotating the laser pen 5 to enable all the thin steel wires to be twisted into one strand until the pre-buried sleeve is tightly tied on the wood template, in the process of rotating the laser pen 5, enabling the thin steel wires to have guiding and friction clamping effects on the thin steel wires due to the twisting shortening of the line groove, so that the thin steel wires are tensioned, and finally, twisting the sleeve on the top of the embedded sleeve, binding the embedded sleeve, lifting the positioning device upwards to enable the positioning device to leave the bound embedded sleeve, completely pulling out the positioning device by the thin steel wire, and pressing the twisted thin steel wire on the top of the embedded sleeve. (3-6) fixing all the embedded sleeve groups according to the method. The steps (1-2) are all adopted in the prior art.
The external diameter of the thin steel wire adopted by the invention is determined according to the precision requirement of construction on the embedded hole, and is generally in the range of 0.5-2 mm. According to industry inertial navigation, the two ends of the embedded sleeve are plugged by using adhesive tapes so as to prevent later-stage pouring concrete from entering the embedded sleeve, and the elasticity of the adhesive tapes also enables the top of the embedded sleeve to have a space for accommodating twisted thin steel wires. The positioning device of example 1 uses extrusion between the circular plate and the positioning tube to align the wires, but when the thin wire is twisted for many turns, the thin wire becomes shorter, and the circular plate is pulled out of the positioning tube, and then the thin wire needs to be manually screwed. The laser pen may be any device capable of emitting a laser beam.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. The utility model provides a pre-buried positioner of pre-buried sleeve pipe group which characterized in that: including ring support, L type support and laser pen, L type support is including connecting montant and the horizontal pole of forming the L shape, and the montant lower extreme can follow the gliding setting of circumference of ring support through the slide on the ring support, and the horizontal pole is located the top of ring support, is provided with the spout that length direction extends on the horizontal pole, and the laser pen slides and sets up in the spout, and the light vertical projection of laser pen is on the bottom surface of ring support, is provided with the scale on the horizontal pole, and the scale is used for instructing the laser pen and throws the distance of the centre of a circle of point distance ring support in ring support bottom surface.
2. The embedded sleeve group embedded positioning device according to claim 1, wherein: the laser pen set up in the spout through the registration arm, the spout longitudinal section be the cross, link up the horizontal pole from top to bottom in the spout, the left and right sides of registration arm respectively is provided with a slider, two sliders are located the left and right sides cell body of spout respectively, the lower extreme of registration arm stretches out the below of horizontal pole, the inner wall of registration arm is fixed with down the spacing ring, be fixed with on the outer wall of laser pen and go up the spacing ring, the laser pen inserts in the registration arm, go up the spacing ring and down the coil spring of spacing ring's clamp on the laser pen, the lower extreme of laser pen is provided with the coupler body, be provided with laser transmission hole on the coupler body, when the laser pen is not pressed, the coupler body is retracted into the registration arm, when the laser pen is pressed down, the coupler body can stretch out under the registration arm.
3. The embedded sleeve set embedded positioning device of claim 2, wherein: the coupler body comprises a circular plate, the circular plate is connected with a laser pen through a connecting plate, a laser transmission hole is formed in the center of the circular plate, a notch communicated with the laser transmission hole is formed in one side of the circular plate, the notch is splayed, the small opening end of the notch is connected with the laser transmission hole, the large opening end of the notch is arranged on the outer circle of the circular plate, a plurality of line grooves staggered with the connecting plate and the notch are uniformly distributed on the circumference of the circular plate, the line grooves are splayed, the small opening end of the line grooves points to the laser transmission hole and are not communicated with the laser transmission hole, the large opening end of the notch is arranged on the outer circle of the circular plate, the notch and the connecting plate are located on two sides of the laser transmission hole, a plane thrust bearing is arranged on the lower limiting ring, and the plane thrust bearing is clamped between the lower limiting ring and the spiral spring.
4. A pre-buried sleeve group pre-buried positioner according to claim 3, wherein: the lower end of the spiral spring is fixedly connected with the upper shaft collar of the plane thrust bearing, the upper end of the spiral spring is fixed with the upper limiting ring, and the lower shaft collar of the plane thrust bearing is bonded with the lower limiting ring.
5. The pre-buried sleeve group pre-buried positioning device according to any one of claims 1 to 4, wherein: the upper end of the laser pen is provided with a handle extending towards two sides of the laser pen.
6. The pre-buried sleeve group pre-buried positioning device according to any one of claims 1 to 4, wherein: the one end that the montant was kept away from to the spout be provided with the shutoff piece, when the locating tube moved to with the shutoff piece laminating, the light of laser pen vertically projected on ring support center.
7. The pre-buried sleeve group pre-buried positioning device according to any one of claims 1 to 4, wherein: the ring support is provided with angle scales for indicating the angle of the ring support.
8. The pre-buried sleeve group pre-buried positioning device according to any one of claims 1 to 4, wherein: the transverse rod is provided with a locking groove which is communicated with the sliding groove, and a locking screw for locking the positioning tube is arranged in the locking groove in a sliding manner.
9. A method for embedding and positioning an embedded sleeve group is characterized in that: a pre-buried positioning device employing a pre-buried sleeve set according to any one of claims 1-4.
10. A method for embedding and positioning an embedded sleeve group is characterized in that: a pre-embedding positioning device for a pre-embedding sleeve group according to any one of claims 1 to 4, comprising the following steps: (1) a floor plank sheathing; (2) Marking the central position of each embedded pipe of the embedded pipe group on the wood template to form an embedded pipe central mark; (3) installing the embedded pipe group on the wood template: the method comprises the steps of (3-1) placing a ring support on a wood template and sleeving the ring support outside a central mark of an embedded pipe, (3-2) adjusting a laser pen to the position of aligning the light to the center of the ring support, moving the ring support to enable the light of the laser pen to be projected onto the central mark of the embedded pipe, (3-3) pushing the laser pen to slide in a sliding groove for the distance of the outer radius of a sleeve to be embedded, taking a plurality of nails bound with thin steel wires, pushing a sliding seat to slide on the ring support for a circle, driving one nail to the light projection point of the laser pen on the wood template every time the sliding seat is at a set angle, (3-4) placing a sleeve to be embedded on the wood template and sleeving the sleeve to the central mark of the embedded pipe, adjusting the laser pen to the position of aligning the center of the ring support, pushing down the laser pen to enable the hook body to extend out of the locating pipe, pushing all the thin steel wires on the wood template to be squeezed into the laser pen from the opening and folded, then clamping the thin steel wires into a same angle of the same line groove, enabling the free ends of the thin steel wires to be located below the line groove, loosening the laser pen to enable the locating pipe, (3-4), screwing all the thin steel wires on the wood template to be tightly fastened to the sleeve on the wood template until the wood template is completed, (6).
CN202210597056.4A 2022-05-30 2022-05-30 Pre-buried sleeve group pre-buried positioning device and pre-buried positioning method Active CN115095145B (en)

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CN202210597056.4A CN115095145B (en) 2022-05-30 2022-05-30 Pre-buried sleeve group pre-buried positioning device and pre-buried positioning method

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CN115095145B true CN115095145B (en) 2023-05-19

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Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10119632B2 (en) * 2015-05-18 2018-11-06 Kuan-Lung Lin Method for producing through hole in floor system for pipe penetration and floor system using the same
CN209066908U (en) * 2018-10-09 2019-07-05 成都建工第四建筑工程有限公司 A kind of positioning device for pre-buried floor sleeve
CN110607907B (en) * 2019-10-23 2024-03-15 中国建筑第七工程局有限公司 Quick accurate positioning tool assembly for embedded sleeve
CN111576866B (en) * 2020-05-28 2024-08-27 武汉建工集团股份有限公司 Quick accurate positioner of pre-buried sleeve pipe
CN214010317U (en) * 2020-12-12 2021-08-20 中铁建工集团山东有限公司 Pre-buried spool positioner of aluminum alloy template
CN113356583B (en) * 2021-06-09 2022-10-04 张家港市建筑设计研究院有限责任公司 Infrared positioning structure of embedded sleeve of standard floor slab and construction method thereof
CN113338640B (en) * 2021-06-16 2023-01-31 中建中新建设工程有限公司 Multilayer building pipeline reserved hole positioning equipment

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Denomination of invention: A pre embedded casing set pre embedded positioning device and pre embedded positioning method

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