CN111576866A - Quick accurate positioner of buried sleeve - Google Patents
Quick accurate positioner of buried sleeve Download PDFInfo
- Publication number
- CN111576866A CN111576866A CN202010464579.2A CN202010464579A CN111576866A CN 111576866 A CN111576866 A CN 111576866A CN 202010464579 A CN202010464579 A CN 202010464579A CN 111576866 A CN111576866 A CN 111576866A
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- Prior art keywords
- sleeve
- template
- embedded
- laser
- scales
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G15/00—Forms or shutterings for making openings, cavities, slits, or channels
- E04G15/06—Forms or shutterings for making openings, cavities, slits, or channels for cavities or channels in walls of floors, e.g. for making chimneys
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G17/00—Connecting 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 quick and accurate positioning device for an embedded sleeve, which comprises a template, the embedded sleeve, a positioning mechanism, an adjusting mechanism and a laser alignment mechanism, wherein the positioning mechanism is used for fixing the embedded sleeve, the laser alignment mechanism is used for measuring the horizontal moving direction and distance of the embedded sleeve, and the adjusting mechanism adjusts the position of the embedded sleeve according to the direction and distance measured by the laser alignment mechanism. The device simple structure, convenient operation can realize fixing buried sleeve's accurate location and to buried sleeve.
Description
Technical Field
The invention relates to the technical field of constructional engineering, in particular to a quick and accurate positioning device for an embedded sleeve.
Background
When the architectural decoration is under construction, the riser need be installed in pre-buried sleeve, however because pre-buried sleeve position is difficult pinpointing during the construction, the later stage often needs to spend a large amount of efforts to carry out the back trompil, causes construction cost to increase, reduces structure construction quality, and the back trompil position also has the seepage risk simultaneously. Therefore, how to provide an embedded part positioning and fixing device which is quick to install, accurate in positioning and convenient and fast to operate is an important technical problem to be solved urgently by technical personnel in the field.
Disclosure of Invention
Based on the prior art, the invention provides a quick and accurate positioning device for an embedded sleeve, which is simple in structure and convenient to operate, and can realize accurate positioning of the embedded sleeve and fixing of the embedded sleeve.
The technical scheme adopted for realizing the above purpose of the invention is as follows:
a quick and accurate positioning device for an embedded sleeve comprises a template and the embedded sleeve, wherein the embedded sleeve is arranged on the template, and the device also comprises a positioning mechanism, an adjusting mechanism and a laser alignment mechanism;
the positioning mechanism comprises a support rod and a pressing plate, the support rod is vertically arranged, the support rod penetrates through the template and is movably connected with the template, the support rod penetrates through the embedded sleeve, the support rod and the embedded sleeve are coaxial, the pressing plate is fixedly arranged on the support rod, the top of the embedded sleeve is tightly pressed on two sides of the pressing plate, and the embedded sleeve is fixed on the template by the pressing plate;
the adjusting mechanism comprises two graduated scales and a sliding mechanism, one ends of the two graduated scales are symmetrically arranged on the supporting rod through the sliding mechanism, the other ends of the two graduated scales are respectively contacted with the inner wall of the embedded sleeve, the length directions of the two graduated scales are positioned in the same radial direction of the embedded sleeve, the two graduated scales can respectively slide along the length directions of the embedded sleeve, the two graduated scales are respectively positioned on two sides of the pressing plate, and the projection of the two graduated scales on the upper surface of the template is not overlapped with the projection of the pressing plate on the upper surface of the template;
the laser alignment mechanism comprises a laser spot projector and a sliding part, laser target and adapter sleeve, the lower extreme and the adapter sleeve upper end threaded connection of bracing piece, the bracing piece is coaxial with the adapter sleeve, the lower extreme of adapter sleeve is equipped with the end panel, end panel lateral wall edge is equipped with the extension strip, the length direction who extends the strip is located the footpath of adapter sleeve, the end panel constitutes the mounting panel that is used for installing laser dotting device with extending the strip jointly, the spout has been seted up along the footpath of adapter sleeve on the mounting panel, the one end of spout is located end panel central authorities, the other end of spout is located the extension strip, the spout is located same straight line with the support bar, one side of spout is equipped with the scale along its length direction, laser dotting device passes through the slider and installs on the tip that the spout is located end panel central authorities, the slider can slide along the spout, the laser that.
Positioning mechanism still include sleeve and gland nut, telescopic both ends opening, telescopic lower port symmetry is equipped with spacing opening, the bracing piece is the screw rod, the cover is equipped with the spacing ring on the bracing piece, the symmetry is equipped with the screens otic placode on the spacing ring, the terminal surface of two screens otic placodes perpendicular to spacing ring respectively, the sleeve is arranged in on the template, the sleeve is located buried sleeve pipe central authorities in advance, the bracing piece runs through the sleeve, bracing piece and sleeve are coaxial, two screens otic placodes respectively with two spacing opening joints, the clamp plate is fixed in on the sleeve top, the bracing piece runs through the clamp plate, the clamp plate passes through gland nut and compresses tightly the sleeve top, and the both sides of clamp plate compress tightly respectively and bury the relative both sides in.
And a calibration hole is formed in the side wall of the lower end part of the support rod, and the axis of the calibration hole is perpendicular to the symmetrical plane in the vertical direction of the two graduated scales.
The clamp plate be a word form, the both sides of clamp plate are fan ring shape, the width of clamp plate increases in proper order from the centre towards the direction at both ends, the bracing piece runs through the clamp plate middle part, the both sides of clamp plate are pushed down the relative both sides in embedded sleeve top, the projection of two scales on the template upper surface and the projection of clamp plate both sides at the template upper surface are along same circumference evenly distributed.
The sliding mechanism comprises two U-shaped sliding rails, two locking bolts and two locking nuts, the bottoms of the two sliding rails are respectively provided with a through hole, one ends of the two sliding rails are symmetrically fixed at the top of the side wall of the sleeve, the two scales are respectively provided with a guide groove along the length direction of the two scales, one ends of the two scales are respectively inserted into the two sliding rails, each locking bolt respectively penetrates through the corresponding through hole and the corresponding guide groove, and the two locking bolts are respectively locked through the two locking nuts.
The laser alignment mechanism further comprises a calibration pin, alignment holes are symmetrically formed in the side wall of the connecting sleeve, the axes of the two alignment holes and the axes of the calibration holes are on the same straight line, the calibration pin penetrates through the two pairs of calibration holes and the calibration holes, and the calibration pin is perpendicular to the different surfaces of the extension strip.
The sliding part comprises a connecting screw, the connecting screw penetrates through the sliding groove, the head of the connecting screw is located in the connecting sleeve, the connecting screw is fixed on the connecting sleeve, a slot for the head of the connecting screw to slide is formed in the lower end of the connecting sleeve, the slot is communicated with the sliding groove, the laser spot device is in threaded connection with the connecting screw, and the laser spot device is fixed on the end portion, located in the center of the end face plate, of the sliding groove through the connecting screw.
The positioning mechanism further comprises a positioning nut, the supporting rod is in clearance fit with the template, and the supporting rod is fixed on the template through the positioning nut positioned at the bottom of the template.
Compared with the prior art, the invention has the beneficial effects and advantages that:
the device simple structure, low in cost through the displacement distance between laser dotting device and the laser target, converts the distance that the buried sleeve pipe that needs removed into ingeniously, easy operation not only, fixes a position accurately moreover, has reduced the degree of difficulty of construction by a wide margin, has improved construction quality, has reduced construction cost, and the practicality is strong.
Drawings
Fig. 1 is a schematic structural view of a quick and accurate positioning device for an embedded casing.
Fig. 2 is an assembly view of the positioning mechanism, adjustment mechanism, and laser alignment mechanism.
Fig. 3 is an assembly view of the adjustment mechanism and the positioning mechanism (the positioning mechanism is partially shown).
Fig. 4 is a schematic structural view of the support rod.
Fig. 5 is an assembly view of the scale and the slide rail.
Fig. 6 is a schematic structural diagram of a laser alignment mechanism.
Fig. 7 is a schematic structural diagram of a laser alignment mechanism (at a different angle from fig. 7).
Fig. 8 is a schematic structural diagram of a laser target.
Fig. 9 is a using state diagram of the quick and accurate positioning device for the embedded casing.
The device comprises a template 1, a pre-embedded sleeve 2, a supporting rod 3, a pressing plate 4, a graduated scale 5, a laser pointer 6, a laser target 7, a connecting sleeve 8, an end face plate 9, an extending strip 10, a sliding chute 11, a sleeve 12, a limiting notch 13, a limiting ring 14, a limiting lug plate 15, a pressing nut 16, a calibration hole 17, a sliding rail 18, a locking bolt 19, a positioning nut 20, a calibration pin 21, a calibration hole 22, a connecting screw 23, a gasket 24, a guide groove 25, a floor 26 and a circular mark 27.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
The structure of the quick and accurate positioning device for the embedded sleeve provided by the embodiment is shown in fig. 1 and fig. 2, and comprises a template 1, an embedded sleeve 2, a positioning mechanism, an adjusting mechanism and a laser alignment mechanism, wherein the embedded sleeve 2 is arranged on the template 1.
The positioning mechanism comprises a support rod 3, a pressure plate 4, a sleeve 12, a compression nut 16 and a positioning nut 20. As shown in fig. 4, the supporting rod 3 is a screw rod, a limiting ring 14 is sleeved on the supporting rod 3, the limiting ring 14 is symmetrically provided with two clamping ear plates 15, and the two clamping ear plates 15 are respectively perpendicular to the end surface of the limiting ring 14. The side wall of the lower end part of the support rod 3 is provided with a calibration hole 17. The vertical setting of bracing piece 3, the bracing piece runs through the template, bracing piece 3 and 1 clearance fit of template, and set nut 20 compresses tightly gasket 24 on 1 bottoms of template with bracing piece 3 and template fixed connection through gasket 24.
The two ends of the sleeve 12 are open, and the lower port of the sleeve 12 is symmetrically provided with limiting notches 13. The sleeve 12 is arranged on the template 1, the sleeve 12 is positioned in the center of the embedded sleeve 2, the supporting rod 2 penetrates through the sleeve 12 and the embedded sleeve 2, and the supporting rod 2, the sleeve 12 and the embedded sleeve are coaxial. The two clamping lug plates 15 are respectively clamped with the two limiting openings 13, and the circumferential rotation of the sleeve 12 can be limited through the matching of the two clamping lug plates 15 and the two limiting openings 13.
As shown in fig. 1 and 3, the pressing plate 4 is in a straight shape, both sides of the pressing plate 4 are in a fan-shaped ring shape, and the width of the pressing plate 4 increases from the middle to both ends in sequence. The middle part of the pressing plate 4 is fixed on the top of the sleeve, the supporting rod 3 penetrates through the middle part of the pressing plate 4, the middle part of the pressing plate 4 is pressed on the top of the sleeve 12 through the compression nut 16 and the gasket 24, and meanwhile, two sides of the pressing plate 4 are respectively pressed on two opposite sides of the top of the buried sleeve 2.
The adjusting mechanism comprises two graduated scales 5 and a sliding mechanism, and the two graduated scales 5 are respectively provided with a guide groove 25 along the length direction. The sliding mechanism comprises two U-shaped sliding rails 18, two locking bolts 19 and two locking nuts, and the bottoms of the two sliding rails 18 are respectively provided with a through hole. One end of each of the two slide rails 18 is symmetrically fixed on the top of the sidewall of the sleeve 12, as shown in fig. 5, one end of each of the two scales 5 is inserted into each of the two slide rails 18, each of the two locking bolts 19 penetrates through the corresponding through hole and the corresponding guide groove 25, each of the two locking bolts 19 is locked by each of the two locking nuts, and the other end of each of the two scales 5 is in contact with the inner wall of the embedded sleeve 2. The length directions of the two graduated scales 5 are located in the same radial direction of the embedded sleeve 2, the axis of the calibration hole 17 is perpendicular to the symmetrical plane in the vertical direction of the two graduated scales 5, and the projections of the two graduated scales 5 on the upper surface of the template 1 and the projections of the two sides of the pressure plate 4 on the upper surface of the template 1 are uniformly distributed along the same circumference.
As shown in fig. 6 and 7, the laser alignment mechanism includes a laser pointer (e.g., a single-point laser pointer) 6, a calibration pin 21, a sliding member, a laser target (a newmeprobe vertical laser target) 7, and a connection sleeve 8. The upper end opening of adapter sleeve 8 is equipped with the internal thread in the adapter sleeve 8, and the symmetry is equipped with mark hole 22 on the adapter sleeve 8 lateral wall. The connecting sleeve 8 is in threaded connection with the lower end of the supporting rod 3, the axes of the two pairs of calibration holes 22 and the axes of the calibration holes 17 are on the same straight line, and the calibration pin 21 penetrates through the two pairs of calibration holes 22 and the calibration holes 17. An end surface plate 9 is arranged at the lower end of the connecting sleeve 8, an extending strip 10 is arranged on the edge of the side wall of the end surface plate 9, the length direction of the extending strip 10 is located in the radial direction of the connecting sleeve 8, and the calibration pin 21 is perpendicular to the different surface of the extending strip 10. End panel 9 constitutes the mounting panel that is used for installing the laser dotter with extending strip 10 jointly, has seted up spout 11 along the radial of adapter sleeve on the mounting panel, and the one end of spout 11 is located end panel 9 central authorities, and the other end of spout 11 is located and extends strip 10, and spout 11 is located same straight line with support bar 10, and one side of spout 11 is equipped with the scale along its length direction. The lower port of the connecting sleeve 8 is provided with a notch for the connecting screw head 23 to slide, and the notch is communicated with the sliding groove 11.
Through setting up calibration hole 17, to calibration hole 22 and calibration round pin 21, the axis of calibrating hole 17 perpendicular to two scales 5 are at the symmetrical plane of vertical direction, and the axis of calibrating hole 17, to calibration hole 22 and calibration round pin 21 three is the same, and calibration round pin 21 is perpendicular with the different face of support bar 10, and support bar 10 and spout 11 are located same straight line, can guarantee like this that the vertical symmetrical plane of two scales 5 and the vertical symmetrical plane of spout 11 coincide basically all the time.
The slider includes connecting screw 23, and connecting screw 23 runs through spout 11, and the head of connecting screw 23 is located adapter sleeve 8, and connecting screw 23 is fixed in on the adapter sleeve, and laser dotting device 6 and connecting screw 23 threaded connection, laser dotting device 6 are fixed in spout 11 through connecting screw 23 and are located the tip of end panel 9 central authorities, and the laser that laser dotting device 6 sent is on same straight line with adapter sleeve 8 axis.
As shown in fig. 8, the laser target is provided with a circle mark and a scale which are matched with different sizes of the embedded sleeves, and the circle center mark is arranged to ensure that the circle center of the laser target is positioned on the axis of the embedded sleeve which is embedded in the lower floor slab.
The use method of the quick and accurate positioning device for the embedded sleeve comprises the following steps:
1. after the parts of the whole device except the laser target are assembled on the template according to the schematic diagram of fig. 1, as shown in fig. 9, the laser target is placed on the pre-embedded sleeve pre-embedded in the lower floor slab, so that the circle center of the laser target is located on the axis of the pre-embedded sleeve on the lower floor slab, because the laser emitted by the laser projector and the axis of the pre-embedded sleeve are on the same straight line, after the laser projector is opened, if the laser emitted by the laser projector does not irradiate the target center of the laser target, the connecting sleeve is rotated first, so that the laser projector can slide along the sliding groove, after the laser projector moves along the sliding groove, the laser projector emits laser energy to irradiate the target center of the laser target, and when the connecting sleeve is rotated to adjust the sliding groove to a proper position, the connecting sleeve stops rotating;
2. in order to ensure that the vertical symmetrical surfaces of the two graduated scales are basically superposed with the vertical symmetrical surface of the sliding chute, the compression nut and the positioning nut are unscrewed, the supporting rod is rotated according to the same direction as the rotating connecting sleeve, when the supporting rod is rotated until the axes of the two pairs of marking holes and the marking holes are the same, namely the marking pin can be inserted into the two pairs of marking holes and the marking holes, the supporting rod is stopped from rotating, the positioning nut is screwed down, and the supporting rod is fixed on the template;
3. loosening the nut on the connecting screw, moving the connecting screw, stopping moving the connecting screw when the laser generated by the laser spot thrower irradiates the target center of the laser target, screwing the nut on the connecting screw, and reading the moving distance of the connecting screw according to the scale on one side of the chute;
4. unscrew two lock nuts, remove two scales along the direction the same with the connecting screw, the distance that two scales removed is the same with the distance that the connecting screw removed, along with the removal of two scales, embedded sleeve also along with two scales remove on the horizontal direction, reach the distance that the connecting screw removed when two scales displacement, stop removing two scales, tighten gland nut, fix embedded sleeve on the template through the clamp plate, just so can fix a position embedded sleeve comparatively accurately, and fix embedded sleeve.
Claims (8)
1. The utility model provides a quick accurate positioner of buried sleeve, includes template and buried sleeve, on the template was arranged in to buried sleeve, its characterized in that: the laser alignment device also comprises a positioning mechanism, an adjusting mechanism and a laser alignment mechanism;
the positioning mechanism comprises a support rod and a pressing plate, the support rod is vertically arranged, the support rod penetrates through the template and is movably connected with the template, the support rod penetrates through the embedded sleeve, the support rod and the embedded sleeve are coaxial, the pressing plate is fixedly arranged on the support rod, the top of the embedded sleeve is tightly pressed on two sides of the pressing plate, and the embedded sleeve is fixed on the template by the pressing plate;
the adjusting mechanism comprises two graduated scales and a sliding mechanism, one ends of the two graduated scales are symmetrically arranged on the supporting rod through the sliding mechanism, the other ends of the two graduated scales are respectively contacted with the inner wall of the embedded sleeve, the length directions of the two graduated scales are positioned in the same radial direction of the embedded sleeve, the two graduated scales can respectively slide along the length directions of the embedded sleeve, the two graduated scales are respectively positioned on two sides of the pressing plate, and the projection of the two graduated scales on the upper surface of the template is not overlapped with the projection of the pressing plate on the upper surface of the template;
the laser alignment mechanism comprises a laser spot projector and a sliding part, laser target and adapter sleeve, the lower extreme and the adapter sleeve upper end threaded connection of bracing piece, the bracing piece is coaxial with the adapter sleeve, the lower extreme of adapter sleeve is equipped with the end panel, end panel lateral wall edge is equipped with the extension strip, the length direction who extends the strip is located the footpath of adapter sleeve, the end panel constitutes the mounting panel that is used for installing laser dotting device with extending the strip jointly, the spout has been seted up along the footpath of adapter sleeve on the mounting panel, the one end of spout is located end panel central authorities, the other end of spout is located the extension strip, the spout is located same straight line with the support bar, one side of spout is equipped with the scale along its length direction, laser dotting device passes through the slider and installs on the tip that the spout is located end panel central authorities, the slider can slide along the spout, the laser that.
2. The quick accurate positioner of buried sleeve according to claim 1, characterized in that: positioning mechanism still include sleeve and gland nut, telescopic both ends opening, telescopic lower port symmetry is equipped with spacing opening, the bracing piece is the screw rod, the cover is equipped with the spacing ring on the bracing piece, the symmetry is equipped with the screens otic placode on the spacing ring, the terminal surface of two screens otic placodes perpendicular to spacing ring respectively, the sleeve is arranged in on the template, the sleeve is located buried sleeve pipe central authorities in advance, the bracing piece runs through the sleeve, bracing piece and sleeve are coaxial, two screens otic placodes respectively with two spacing opening joints, the clamp plate is fixed in on the sleeve top, the bracing piece runs through the clamp plate, the clamp plate passes through gland nut and compresses tightly the sleeve top, and the both sides of clamp plate compress tightly respectively and bury the relative both sides in.
3. The quick accurate positioner of buried sleeve pipe according to claim 2, characterized in that: and a calibration hole is formed in the side wall of the lower end part of the support rod, and the axis of the calibration hole is perpendicular to the symmetrical plane in the vertical direction of the two graduated scales.
4. The quick and accurate positioning device for embedded sleeves according to claim 2, characterized in that: the clamp plate be a word form, the both sides of clamp plate are fan ring shape, the width of clamp plate increases in proper order from the centre towards the direction at both ends, the bracing piece runs through the clamp plate middle part, the both sides of clamp plate are pushed down the relative both sides in embedded sleeve top, the projection of two scales on the template upper surface and the projection of clamp plate both sides at the template upper surface are along same circumference evenly distributed.
5. The quick and accurate positioning device for the embedded sleeves according to any one of claims 1 to 4, which is characterized in that: the sliding mechanism comprises two U-shaped sliding rails, two locking bolts and two locking nuts, the bottoms of the two sliding rails are respectively provided with a through hole, one ends of the two sliding rails are symmetrically fixed at the top of the side wall of the sleeve, the two scales are respectively provided with a guide groove along the length direction of the two scales, one ends of the two scales are respectively inserted into the two sliding rails, each locking bolt respectively penetrates through the corresponding through hole and the corresponding guide groove, and the two locking bolts are respectively locked through the two locking nuts.
6. The quick and accurate positioning device for embedded sleeves according to claim 5, characterized in that: the laser alignment mechanism further comprises a calibration pin, alignment holes are symmetrically formed in the side wall of the connecting sleeve, the axes of the two alignment holes and the axes of the calibration holes are on the same straight line, the calibration pin penetrates through the two pairs of calibration holes and the calibration holes, and the calibration pin is perpendicular to the different surfaces of the extension strip.
7. The quick and accurate positioning device for embedded sleeves according to claim 5, characterized in that: the sliding part comprises a connecting screw, the connecting screw penetrates through the sliding groove, the head of the connecting screw is located in the connecting sleeve, the connecting screw is fixed on the connecting sleeve, a slot for the head of the connecting screw to slide is formed in the lower end of the connecting sleeve, the slot is communicated with the sliding groove, the laser spot device is in threaded connection with the connecting screw, and the laser spot device is fixed on the end portion, located in the center of the end face plate, of the sliding groove through the connecting screw.
8. The quick and accurate positioning device for embedded sleeves according to claim 5, characterized in that: the positioning mechanism further comprises a positioning nut, the supporting rod is in clearance fit with the template, and the supporting rod is fixed on the template through the positioning nut positioned at the bottom of the template.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN202010464579.2A CN111576866A (en) | 2020-05-28 | 2020-05-28 | Quick accurate positioner of buried sleeve |
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CN202010464579.2A CN111576866A (en) | 2020-05-28 | 2020-05-28 | Quick accurate positioner of buried sleeve |
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CN111576866A true CN111576866A (en) | 2020-08-25 |
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CN202010464579.2A Pending CN111576866A (en) | 2020-05-28 | 2020-05-28 | Quick accurate positioner of buried sleeve |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114278309A (en) * | 2021-12-06 | 2022-04-05 | 绍兴文理学院 | Tunnel position adjusting and positioning device in tunnel physical model |
CN115095145A (en) * | 2022-05-30 | 2022-09-23 | 山东深博建筑工程有限公司 | Embedded positioning device and method for embedded sleeve group |
-
2020
- 2020-05-28 CN CN202010464579.2A patent/CN111576866A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114278309A (en) * | 2021-12-06 | 2022-04-05 | 绍兴文理学院 | Tunnel position adjusting and positioning device in tunnel physical model |
CN115095145A (en) * | 2022-05-30 | 2022-09-23 | 山东深博建筑工程有限公司 | Embedded positioning device and method for embedded sleeve group |
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