CN209639728U - Caisson vertical degree of the peg hole detection device - Google Patents
Caisson vertical degree of the peg hole detection device Download PDFInfo
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- CN209639728U CN209639728U CN201920773794.3U CN201920773794U CN209639728U CN 209639728 U CN209639728 U CN 209639728U CN 201920773794 U CN201920773794 U CN 201920773794U CN 209639728 U CN209639728 U CN 209639728U
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Abstract
The utility model relates to a kind of caisson vertical degree of the peg hole detection devices, including positioning device, lifting rope and detection annulus, positioning device is horizontally disposed, wire rope handling through-hole is offered in positioning device, lifting rope activity passes through wire rope handling through-hole, detection annulus is connected with lifting rope and is suspended in the lower section of positioning device, and detection annulus is coaxial in horizontal and detection annulus and wire rope handling through-hole；It detects and is equipped with the transmitting terminal of vertical laser emitter and laser emitter at the center of annulus towards positioning device so that the light beam directive positioning device that laser emitter issues and the axis collinear with wire rope handling through-hole；Positioning device is plate structure, using the center of wire rope handling through-hole as co-ordinate zero point, is equipped with criss-cross graduation mark on the positioning device in order to the verticality offset for measuring stake holes.The utility model is in detection in use, testing staff does not have to enter in stake holes with support personnel's safety；Testing staff carries out quantitative detection to the verticality of stake holes with can be convenient.
Description
Technical field
The utility model belongs to the gradient of drilling or well confirmation technical field in fixed buildings, and in particular to a kind of borehole
Stake vertical degree of the peg hole detection device.
Background technique
Caisson is widely used in architectural engineering, and pile foundation hole degree control is the dominant item of pile foundation hole quality control, by
It is detected in underground environment complexity, testing staff's access aperture, there is biggish security risk, therefore pile foundation hole measuring for verticality
It is the problem faced in engineering construction construction.For this purpose, can for engineering construction construction pile foundation hole perpendicularity testing staff
With examinations in not access aperture, also there is a large amount of correlative studys in the prior art, as CN205063940U, CN208780085U,
Disclosed in CN207879321U, messenger wire, the design axis of vertical messenger wire and pile foundation hole are put into pile foundation hole by positioning device
Line (center location in pile foundation hole aperture in other words) is overlapped, and messenger wire lower end connection level and coaxial detection annulus detect annulus
Transferred by messenger wire, by detected in decentralization process annulus whether can by or whether contact with pile foundation hole inner wall and judges that it is vertical
Whether straight degree (vertical degree) is qualified.But existing weaponry and equipment has the disadvantage that
1, be inconvenient to correct；The accuracy of equipment detection depends on equipping the concentricity of the several components of itself, especially
It is the level and coaxial situation for detecting annulus under suspended state, and current equipment check and correction is difficult, or even live can not proofread
And it must periodically send to the calibration authority for thering is correspondence to detect fixture (technological equipment) and be proofreaded.
2, it can only qualitatively judge, be unable to quantitative detection；Current equipment by detection annulus in decentralization process whether with stake
Datum hole inner wall contacts to judge whether verticality is qualified, is to qualitatively judge, is unable to quantitative detection so as to subsequent and repairs inclined construction, only
The detection frequency, low efficiency can be increased in subsequent construction.
3, because judge orientation it is uncertain due to when often result in repetition detection；In detection process, often occur detecting vertical
Spend it is unqualified, it is subsequent to repair inclined construction direction not since to cause orientation to judge unclear for the fault of record personnel after removing associated equipment
The phenomenon that determining, and having to detect again, inconvenient, mistake proofing is not strong.
In response to the above problems, also have in the prior art can quantitative detection equipment, as CN205262383U,
Use disclosed in CN204705346U stretches dipping plate or rangefinder to quantify, and the dipping plate that stretches uses more complicated, suspention
Rangefinder is also not easy guarantee level and coaxial use accuracy to emit laser ranging.
Also just like a kind of lasting construction direction equipment is substantially belonged to disclosed in CN204571971U, detection property is not strong.
Summary of the invention
For the above-mentioned deficiency of the prior art, the technical problem to be solved by the present invention is to provide a kind of caisson stake holes
Testing apparatus for verticality avoids being unable to vertical degree of the peg hole quantitative detection or the more complicated problem of quantitative detection, obtains use
It is convenient, it is convenient to the effect of quantitative detection.
In order to solve the above technical problems, the utility model adopts the following technical solution:
Caisson vertical degree of the peg hole detection device, including positioning device, lifting rope and detection annulus, the positioning device water
It is flat to be arranged, wire rope handling through-hole is offered in the positioning device, the lifting rope activity passes through the wire rope handling through-hole, the detection annulus
It is connected and is suspended in the lower section of positioning device with lifting rope, the detection annulus is in horizontal and detection annulus and the wire rope handling through-hole
Coaxially；The transmitting terminal direction positioning of vertical laser emitter and the laser emitter is equipped at the center of the detection annulus
Device is so that the light beam directive positioning device that laser emitter issues and the axis collinear with wire rope handling through-hole；The positioning device is
Plate structure, using the center of the wire rope handling through-hole as co-ordinate zero point, on the positioning device be equipped with criss-cross graduation mark with
Just in actual use, laser emitter can be read when vertical degree of the peg hole is unqualified issues the projection of light beam on the positioning device
The offset of point relative coordinate zero point.
The utility model is the further improvement in existing detection device, basic use process and testing principle
It is identical as the prior art (such as CN205063940U, CN208780085U), in detection in use, testing staff does not have to enter stake holes
It is interior with support personnel's safety；But by being arranged criss-cross grid-like graduation mark in the positioning device of plate, and with
Co-ordinate zero point of the center of circle of wire rope handling through-hole as the graduation mark, further combining can be to the inspection of positioning device projecting beam
Annulus is surveyed, testing staff carries out quantitative detection to the verticality of stake holes with can be convenient.In use, detection annulus is put by lifting rope
Enter in stake holes, positioning device is in a horizontal state above, guarantees the wire rope handling through-hole in positioning device and the center in stake holes (aperture)
Point position is overlapped；Under normal circumstances, detection annulus is in a horizontal state, and the light beam that laser emitter issues and messenger wire, wire rope handling are logical
The axis in hole be it is conllinear, detection annulus is transferred by lifting rope and detects the side of annulus if tested vertical degree of the peg hole is unqualified
Contacted with stake holes inner wall and make detect annulus run-off the straight, detect annulus on laser emitter issue light beam no longer with hang
Line, wire rope handling through-hole axis be it is conllinear, also run-off the straight and form incident point on the positioning device, incident point is fallen in hands in length and breadth
In wrong graduation mark, it is convenient to carry out quantitative measurement, and press design requirement value, can be and directly counted by the graduation mark
The offset obtained is also possible to transfer the angular misalignment that length computation comes out further combined with lifting rope.There are no right herein
The material of positioning device, graduation mark setting position be defined, can routinely be interpreted as common plate and by institute
The lower surface that positioning device is arranged in graduation mark is stated, in use, positioning device wants frame to be higher than stake holes aperture, so as to testing staff's sight
The scale and light beam incident point instruction situation for examining positioning device lower surface, reach said effect, exploitativeness is that there is no problem
's.
The detection device of the utility model is exactly in the accurate, reliable of detection device itself there are one convenient place
It is very convenient on degree, make positioning device in level, messenger wire suspends the detection annulus of lower section in midair, if its laser emitter issues
Light beam and messenger wire, wire rope handling through-hole axis be it is conllinear, i.e., positioning device graduation mark region formation subpoint, that
Illustrate to detect annulus is horizontal and the concentricity of whole device also there is no problem, can be used normally.When implementation, this verification step
It is rapid that the actually detected initial stage can even be combined just to observe judgement by the way, it is very convenient, high without specially for carrying out
Effect.This is not available for existing detection device.
Above-mentioned technical proposal is further improved, the positioning device is the transparent setting layer position so as to for the graduation mark
More selections are provided.
In this way, positioning device can be tempered glass or plastic products, the setting position of 1, graduation mark is had the advantage that
More selections can be had by setting, as long as it is horizontal, it can be the upper surface or lower surface carved and be located at positioning device, even
Also can be set preferably to avoid being worn inside positioning device, can infuse it is molten by way of or double-layer structure overlapping
Mode is realized；2, the observation metering of testing staff is more convenient, is not limited to view mode above, can be restored to it is conventional from
On mode down observed, using more convenient；Still can when the positioning device for the light beam passes through transparent that laser emitter issues
It is left in its plate face in macroscopic " incident point ", observation metering is not affected.
Further, it is additionally provided with scale value corresponding with the graduation mark on the positioning device quickly to read offset
Amount.
In this way, improving man-machine efficacy, property easy to use is further increased, improves experience sense；Conventional, it is aforementioned criss-cross
Graduation mark be according to certain unit length certainly, such as centimetre, parallel interval setting forms several 1 on the positioning device
× 1 centimetre of grid, it is corresponding along with the scale value for indicating numerical value after, so that it may light beam is issued according to laser emitter
Which grid incident point falls in and quickly reads offset, and does not have to count corresponding grid quantity one by one again.
Further, be additionally provided on the positioning device it is corresponding with the graduation mark be used to indicate east or/and west or/and south
Or/and the mark in north orientation orientation.
In this way, combining actual use, it can be prevented repeatedly with mistake proofing, improve measurement accuracy and detection efficiency.Actual use
When, often occur verticality qualitatively judge be it is unqualified, remove associated equipment after, due to record personnel fault cause orientation to sentence
Break unclear, it is subsequent that repair inclined construction direction uncertain, and the phenomenon that have to detect again；It is filled using the positioning of the utility model
It sets, at the beginning of detection, when placement positioning device, just combines the bearing mark in positioning device by positioning device by corresponding correct
Orientation places, and when later observation is measured, records orientation and offset, or offset section and offset (usual offset
The positive and negative also spacing of x, y value illustrates offset section, so there is no the workloads increased deliberately), after removing associated equipment,
Offset and orientation can all reappear, and play mistake proofing, prevent effect repeatedly.
Further, the shape of the positioning device is circle, and the wire rope handling through-hole is provided at the center of positioning device,
That is the shape of positioning device and wire rope handling through-hole is coaxial.
In this way, being a kind of design that comparison is conventional, at the beginning of facilitating detection, make to guarantee the wire rope handling through-hole and stake in positioning device
The operation that the center position in hole (aperture) is overlapped is simpler easily to be implemented.
Further, the liner cross that the detection annulus includes outer toroid and is connected on the inside of the outer toroid, institute
The center for stating liner cross is equipped with mounting hole and is detachably connected by the mounting hole with laser emitter, the liner ten
Four ends of cabinet frame are connected with one end of four connecting lines respectively, and the other end of four connecting lines is connected with the lifting rope upwards.
In this way, being also a kind of design method that comparison is conventional for detection annulus itself, facilitates and guarantee that lifting rope and detection are justified
The connection of ring and horizontal suspension；Be detachably connected be laser emitter for convenience replacement or maintenance, mounting hole and laser are sent out
The exact shape of emitter is corresponding, usually column, does not remake concrete restriction, the light beam that connection guarantees that laser emitter issues is perpendicular
It is straight upwards and be conllinear with the axis of lifting rope, wire rope handling through-hole.The laser emitter is interpreted as an existing finished product,
Its generally include a shell and assembled the power supply module (usually button cell) being placed in shell, circuit connection and
Laser beam emitting head offers the hole projected for laser beam on shell and is formed as transmitting terminal, in order to save electric energy, can also have
Whether the switch of one power on/off is connected to control circuit.
Further, the connecting line is equipped with length adjustment device so that the length of the connecting line is adjustable thus into one
Step facilitates the verification before single unit system use.
In this way, at the beginning of verification or detection find laser emitter issue light beam and messenger wire, wire rope handling through-hole axis not
Can be conllinear, i.e., when the graduation mark region of positioning device forms subpoint, illustrate that the overhead horizontal state for detecting annulus occurs
Problem, can be tuned up by the length of connecting line, easy to operate.
Further, the diameter of the lifting rope is corresponding with the aperture of the wire rope handling through-hole or the diameter of lifting rope is slightly less than wire rope handling
The aperture of through-hole.
In this way, in the margin of tolerance of permission, reduction error small as far as possible guarantees the accuracy of detection.
Compared with prior art, the utility model has the following beneficial effects:
1, the utility model is in detection in use, testing staff does not have to enter in stake holes with support personnel's safety；Detection
Personnel carry out quantitative detection to the verticality of stake holes with can be convenient.
2, the utility model is very convenient in the accurate of detection device itself, reliability, and making positioning device is in level,
Messenger wire suspends the detection annulus of lower section in midair, if the axis of light beam and messenger wire that its laser emitter issues, wire rope handling through-hole is altogether
Line, i.e., subpoint is not formed in the graduation mark region of positioning device, annulus is horizontal and whole device then illustrating to detect
Also there is no problem for concentricity, can be used normally.
3, the man-machine efficacy of the utility model is good, easy to use, and can be prevented repeatedly with mistake proofing, be improved measurement
Accuracy and detection efficiency.
4, the apparatus structure of the utility model improves and uncomplicated but practicability is very strong, and installation cost is low, and applicability is good.
Detailed description of the invention
The structural schematic diagram of Fig. 1-specific embodiment caisson vertical degree of the peg hole detection device；
The independent schematic diagram (vertical view) of positioning device in Fig. 2-specific embodiment；
The independent schematic diagram (vertical view) of detection annulus in Fig. 3-specific embodiment；
The portion A partial enlarged view in Fig. 4-Fig. 1；
Wherein, positioning device 1, wire rope handling through-hole 11, co-ordinate zero point 12, graduation mark 13, scale value 14, bearing mark 15 are hung
Rope 2 detects annulus 3, and outer toroid 31, liner cross 32, mounting hole 33, connecting line 4, length adjustment device 41, first is rod-shaped
Part 411, the second rod-like element 412, laser emitter 5.
Specific embodiment
Specific embodiment of the present utility model is described in further detail with reference to the accompanying drawing.
Referring to Fig. 1-3, the caisson vertical degree of the peg hole detection device of specific embodiment, including positioning device 1, lifting rope 2 with
And detection annulus 3, the positioning device 1 are circular plate structure made of transparent plastics material, in horizontally disposed, the positioning
Vertical perforative wire rope handling through-hole 11 is offered at the center of device 1,2 activity of lifting rope passes through the wire rope handling through-hole 11, described
Detection annulus 3 is connected with lifting rope 2 and is suspended in the lower section of positioning device 1, and the detection annulus 3 includes outer toroid 31 and is connected
Liner cross 32 in 31 inside of the outer toroid, four ends of the liner cross 32 respectively with four connecting lines 4 one
End is connected, and the other end of four connecting lines 4 is connected with the lifting rope 2 upwards, and under the suspended state, the detection annulus 3 is in
Horizontal and detection annulus 3 and the wire rope handling through-hole 11 are coaxial, i.e. the axis of detection annulus 3 plays the vertical of suspension function with lifting rope 2
Section is conllinear.
The transmitting terminal court of vertical laser emitter 5 and the laser emitter 5 is equipped at the center of the detection annulus 3
To positioning device 1 so that light beam directive positioning device 1 that laser emitter 5 issues and total with the axis of lifting rope 2, wire rope handling through-hole 11
Line；Using the center of the wire rope handling through-hole 11 as co-ordinate zero point 12, is carved in the upper surface of positioning device 1 and be equipped with criss-cross quarter
Line 13 and scale value 14 corresponding with the graduation mark 13 are spent to read laser emitter 5 and to issue light beam in positioning device 1
Incident point relative coordinate 0. 12 offset, also carve to be equipped with and with the graduation mark 13 corresponding be used to indicate south and north orientation
Bearing mark 15.
Wherein, the center of the liner cross 32 is equipped with mounting hole 33 and passes through the mounting hole 33 and laser emitter
5 are detachably connected.When implementation, laser emitter 5 is existing finished product, and usually column, corresponding to be formed as out mounting hole 33
The upward blind hole of mouth, aperture is corresponding with laser emitter 5, and by the insertion of laser emitter 5, (clearance fit or slightly interference are matched
Closing) mounting hole 33 installed.
Wherein, the connecting line 4 is equipped with length adjustment device 41 so that the length of the connecting line 4 is adjustable thus into one
Step facilitates the verification before single unit system use.There are many device of adjustable rope yarn length, referring to fig. 4, the length in the present embodiment
Regulating device 41, including the first rod-like element 411, the second rod-like element 412 being connected through a screw thread, connecting line 4 described in one divides
It is two sections, one end of two rod-like elements is respectively fixedly connected with corresponding one section of connecting line, and the other end of the first rod-like element 411 is one
A rotary end (using its axis as the centre of gyration) simultaneously has internal thread hole, and the other end of the second rod-like element 412 is band
There is externally threaded screw rod, the rotary end of the first rod-like element 411 is threadedly coupled with the screw rod end of the second rod-like element 412,
By rotating the rotary end of first rod-like element 411, (other fixations, avoiding connecting line 4, there are distorting stresses
And influence balance), so that it may it realizes the telescopic adjustment on the length direction of connecting rope, and then realizes the adjustment of length.
The diameter of the lifting rope 2 is corresponding with the aperture of the wire rope handling through-hole 11 or the diameter of lifting rope 2 is slightly less than wire rope handling through-hole
11 aperture, in the present embodiment, the selection of lifting rope 2 uses the wirerope of φ 5, and the aperture of the wire rope handling through-hole 11 is φ 5.5,
Because testing principle is mainly the movement straight down by detection annulus 3 under gravity, allow lifting rope 2 and wire rope handling through-hole
Both 11 diameter has some deviations, as fit-up gap and guarantees that 2 activity of lifting rope passes through the sliding property of wire rope handling through-hole 11.
For ease of understanding, it is further described the use process of the present apparatus:
The verification of device itself: make positioning device 1 in level, a cross air level can be placed in positioning device 1
It observes, or is directly embedded a cross air level in the upper surface of positioning device 1 to observe and to use, messenger wire can be slid through
Wire rope handling through-hole 11 suspends the detection annulus 3 of lower section in midair, opens laser emitter 5 and issues laser beam, if light beam and messenger wire,
The axis of wire rope handling through-hole 11 be it is conllinear, i.e., not positioning device 1 13 region of graduation mark formed subpoint, illustrate detection circle
Also there is no problem for the concentricity of 3 level of ring and whole device, can be used normally；Light beam said herein and lifting rope 2, wire rope handling through-hole
11 axis collinear, it is not necessarily absolutely conllinear, as long as the laser emitter 5 being slightly slanted is not at the quarter of positioning device 1
It spends 13 region of line and forms subpoint, then it is assumed that be the error range etc in permission, can determine whether to can be used normally.If light
The axis of beam and messenger wire, wire rope handling through-hole 11 fails collinearly, i.e., when 13 region of graduation mark of positioning device 1 forms subpoint,
Illustrate that the overhead horizontal state for detecting annulus 3 there is a problem, line 4 is correspondingly connected with by the adjustment of corresponding length adjustment device 41
Length, make the axis collinear of light beam and messenger wire, wire rope handling through-hole 11, can normal use.The present apparatus have can itself verification
Function assembles that the calibration process used is simple and convenient as long as the manufacture size qualification of each part, and can guarantee the standard of subsequent detection
True property.
Detection vertical degree of the peg hole: detection annulus 3 is put into stake holes aperture hereinafter, positioning device 1 is fixed above by lifting rope 2
It (can be realized by the bracket of adapted) more than stake holes aperture or in stake holes aperture, be in a horizontal state, make in positioning device 1
North-south orientation mark 15 be consistent with actual direction, and guarantee the wire rope handling through-hole 11 in positioning device 1 in stake holes (aperture)
Heart point position is overlapped, and can be confirmed by total station, is the prior art, which is not described herein again；By the decentralization of lifting rope 2, (lifting rope 2 has
Certain length passes through the past decentralization of wire rope handling through-hole 11 by artificial or gear teeth rotating machinery above positioning device 1) detection annulus 3,
If tested vertical degree of the peg hole is unqualified, the side of detection annulus 3 contacts with stake holes inner wall and makes to detect 3 run-off the straight of annulus,
Detection annulus 3 on laser emitter 5 issue light beam be no longer with the axis of messenger wire, wire rope handling through-hole 11 it is conllinear, also occur
It tilts and passes through transparent positioning device 1 and form " incident point " in positioning device 1, this " incident point " refers to laser beam
Position across transparent positioning device 1 is visible, and in conjunction with the graduation mark 13 and scale value 14 in positioning device 1, can be facilitated
Ground carries out quantitative measurement；By design requirement value, orientation and offset can record, or offset section and offset are (usually partially
The positive and negative also spacing of the x of shifting amount, y value illustrates offset section, and there is no increase redundant work amount), it is also possible to further tie
(determination that lifting rope 2 transfers length can be on lifting rope 2 originally the angular misalignment and orientation that the conjunction decentralization length computation of lifting rope 2 comes out
Body is equipped with length mark, and the later period measures again after being also possible to label), all achieve the effect that quantitative detection, it is simple to operate；
After removing associated equipment, offset and orientation can all reappear, and play mistake proofing, prevent effect repeatedly.
When implementation, bearing mark 15 be also possible to east and west to or any of four direction, mark can be played and made
With；The laser emitter 5 or laser range finder provide laser beam by laser range finder, and installation position is not
Become, aforementioned using effect is constant, simply by laser range finder, then corresponding one sender unit of setting and reception display
Terminal, laser range finder, to display terminal transmission range information is received, facilitate testing staff by connecing by sender unit
It receives display terminal and obtains the distance that detection annulus 3 arrives positioning device 1, to obtain depth information by the way.
Finally, it is stated that above embodiments are merely intended for describing the technical solutions of the present application, but not for limiting the present application, although ginseng
The utility model is described in detail according to preferred embodiment, those skilled in the art should understand that, it can be to this
The technical solution of utility model is modified or replaced equivalently, without departing from the objective and model of technical solutions of the utility model
It encloses, should all cover in the scope of the claims of the utility model.
Claims (8)
1. caisson vertical degree of the peg hole detection device, including positioning device, lifting rope and detection annulus, the positioning device are horizontal
Setting, offers wire rope handling through-hole in the positioning device, and the lifting rope activity passes through the wire rope handling through-hole, the detection annulus and
Lifting rope is connected and is suspended in the lower section of positioning device, and the detection annulus is same in horizontal and detection annulus and the wire rope handling through-hole
Axis；It is characterized by: being equipped with the transmitting of vertical laser emitter and the laser emitter at the center of the detection annulus
It holds towards positioning device so that the light beam directive positioning device that laser emitter issues and the axis collinear with wire rope handling through-hole；It is described
Positioning device is plate structure, using the center of the wire rope handling through-hole as co-ordinate zero point, is equipped on the positioning device criss-cross
Graduation mark so as in actual use can quantitative detection vertical degree of the peg hole offset.
2. caisson vertical degree of the peg hole detection device according to claim 1, it is characterised in that: the positioning device is transparent
To provide more selections for the setting layer position of the graduation mark.
3. caisson vertical degree of the peg hole detection device according to claim 1, it is characterised in that: be additionally provided on the positioning device
Scale value corresponding with the graduation mark is quickly to read offset.
4. caisson vertical degree of the peg hole detection device according to claim 1, it is characterised in that: be additionally provided on the positioning device
The mark for being used to indicate east or/and west or/and south or/and north orientation orientation corresponding with the graduation mark.
5. caisson vertical degree of the peg hole detection device according to claim 1, it is characterised in that: the shape of the positioning device
For circle, the wire rope handling through-hole is provided at the center of positioning device.
6. caisson vertical degree of the peg hole detection device according to claim 1, it is characterised in that: the detection annulus includes outer
Annulus and the liner cross being connected on the inside of the outer toroid, the center of the liner cross are equipped with mounting hole and pass through institute
It states mounting hole to be detachably connected with laser emitter, four ends of liner cross one end phase with four connecting lines respectively
Even, the other end of four connecting lines is connected with the lifting rope upwards.
7. caisson vertical degree of the peg hole detection device according to claim 6, it is characterised in that: the connecting line is equipped with length
Degree regulating device is so that the length of the connecting line is adjustable to further facilitate the verification before single unit system use.
8. caisson vertical degree of the peg hole detection device according to claim 1, it is characterised in that: the diameter of the lifting rope and institute
The diameter of the aperture correspondence or lifting rope of stating wire rope handling through-hole is slightly less than the aperture of wire rope handling through-hole.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920773794.3U CN209639728U (en) | 2019-05-27 | 2019-05-27 | Caisson vertical degree of the peg hole detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920773794.3U CN209639728U (en) | 2019-05-27 | 2019-05-27 | Caisson vertical degree of the peg hole detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110057351A (en) * | 2019-05-27 | 2019-07-26 | 中冶建工集团有限公司 | Caisson vertical degree of the peg hole detection device and detection method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110057351A (en) * | 2019-05-27 | 2019-07-26 | 中冶建工集团有限公司 | Caisson vertical degree of the peg hole detection device and detection method |
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