CN208780206U - Verticality measurement device and degree control system - Google Patents
Verticality measurement device and degree control system Download PDFInfo
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- CN208780206U CN208780206U CN201821435877.3U CN201821435877U CN208780206U CN 208780206 U CN208780206 U CN 208780206U CN 201821435877 U CN201821435877 U CN 201821435877U CN 208780206 U CN208780206 U CN 208780206U
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- box
- plumb bob
- measurement device
- determinand
- peephole
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Abstract
This application involves verticality measurement device technical fields, more particularly, to a kind of verticality measurement device and degree control system.The verticality measurement device includes fixing piece, vertical, windproof box and peephole；The vertical includes suspension line and plumb bob, and one end of the suspension line is connect with the plumb bob；The fixing piece is connect with the other end of determinand and the suspension line respectively, so that the plumb bob is sagging along gravity direction；The radix saposhnikoviae box is connect with the determinand, and the plumb bob is located in the windproof box；The peephole is connect with the windproof box.The mode that the application can be avoided naked-eye observation verticality easily causes relatively large deviation and weather condition to impact the technical problem in turn resulting in squareness measurement inaccuracy to observation effect.
Description
Technical field
This application involves verticality measurement device technical fields, more particularly, to a kind of verticality measurement device and verticality
Control system.
Background technique
During Construction of High Pressure Jet Grouting Pile, it is Construction of High Pressure Jet Grouting Pile that the control of verticality, which is the most important thing of construction,
Successful key point.High-pressure rotary jet grouting pile is that one kind is mixed cement with soil layer by high-pressure rotary-spray nozzle, is allowed to form solid
Coagula, to reach the form of construction work of consolidated subsoil.It is in the construction process due to misoperation, ground flat degree deficiency, machine
The inclination that the factors such as tool vibration will cause drilling rod also brings along one to the uniformity of pile body while influencing pile quality
The influence of series.
Currently, the degree control mode that high-pressure rotary jet grouting pile uses in the construction process generally hangs sash weight, and with the naked eye
The observation of verticality is carried out, this mode easily causes relatively large deviation, and observation effect can be greatly influenced when blowing, so that
Pile body verticality is unable to get guarantee.
Utility model content
The application's is designed to provide a kind of verticality measurement device and degree control system, to solve the prior art
Present in the mode of naked-eye observation verticality easily cause relatively large deviation, and weather condition can impact observation effect, into
And cause the technical problem of squareness measurement inaccuracy.
This application provides a kind of verticality measurement devices, including fixing piece, vertical, windproof box and peephole；The lead
Hanging down includes suspension line and plumb bob, and one end of the suspension line is connect with the plumb bob；The fixing piece respectively with determinand and institute
The other end connection for stating suspension line, so that the plumb bob is sagging along gravity direction；The radix saposhnikoviae box is connect with the determinand, institute
Plumb bob is stated to be located in the windproof box；The peephole is connect with the windproof box.
In the above-mentioned technical solutions, further, the windproof box is open-topped open box；The plumb bob is located at institute
It states in the box chamber of open box；The side of the open box is connect with the determinand.
In any of the above-described technical solution, further, graduation mark, the plumb bob are provided on the bottom surface of the open box
Lower section there is cutting-edge structure, the cutting-edge structure is directed toward the specific location of the graduation mark for measuring the vertical of determinand
Degree.
In any of the above-described technical solution, further, the graduation mark is used to measure the deviation angle of the plumb bob, or
Graduation mark described in person is used to measure the offset distance of the plumb bob.
In any of the above-described technical solution, further, the bottom surface of the peephole and the open box is in set angle,
So that the peephole reflects the specific location that the plumb bob is directed toward the graduation mark.
In any of the above-described technical solution, further, drainage hole is provided on the bottom surface of the open box.
In any of the above-described technical solution, further, the radix saposhnikoviae box is made of clear material.
In any of the above-described technical solution, further, the peephole is plane mirror or the peephole is concave surface
Mirror.
In any of the above-described technical solution, further, the fixing piece is to be detachably connected with the determinand；It is described
Windproof box is to be detachably connected with the determinand.
Present invention also provides a kind of degree control systems, including squareness measurement described in any of the above-described technical solution
Device, thus, whole advantageous effects with the device, here, repeating no more.
Compared with prior art, the application has the beneficial effect that
Verticality measurement device provided by the present application, including fixing piece, vertical, windproof box and peephole.Wherein, vertical packet
Include suspension line and plumb bob, one end of suspension line is connect with fixing piece, and the other end of suspension line is connect with plumb bob, due to fixing piece with
Determinand connection, fixing piece i.e. will be near suspended plumbs to determinand.Plumb bob is due to gravity straightening hanging line, when freely sagging
Direction, that is, terrestrial gravitation line direction.Radix saposhnikoviae box provided by the present application is also connect with determinand, i.e., is consolidated to windproof box
Fixed, and windproof box is located at the lower section of fixing piece, when plumb bob straightening hanging line, plumb bob is to be located in windproof box.It is provided by the present application
Peephole is connect with windproof box, then operator can observe the sagging direction of plumb bob and the direction of determinand by peephole
It compares, and then judges whether determinand is vertical with ground holding.
Specifically, when operator is worked using verticality measurement device provided by the present application, it may in field work
Blow Deng adverse weathers situation can be encountered, the setting of windproof box ensure that plumb bob is not influenced by wind-force, it is ensured that plumb bob is sagging
Direction is the direction of terrestrial gravitation line.And in field construction due to condition of construction complexity, operator cannot directly observed
When to the case where plumb bob, plumb bob is observed by the image in peephole mirror, the clear determinand of operator can be facilitated whether
Plumbness is kept with ground.
Verticality measurement device provided by the present application can be realized and avoid the vertical of the direct naked-eye observation vertical of operator
It spends, and then be easy to cause the measurement of verticality to form relatively large deviation, and when blowing equal adverse weathers situation, the squareness measurement
Device can impact observation effect to avoid weather, in turn result in the technical problem of squareness measurement inaccuracy.
Present invention also provides degree control systems, including the verticality measurement device.Based on above-mentioned analysis may be used
Know, which can be realized the verticality for avoiding the direct naked-eye observation vertical of operator, and then be easy to cause
The measurement of verticality forms relatively large deviation, and when blowing equal adverse weathers situation, which can be to avoid day
Gas impacts observation effect, in turn results in the technical problem of squareness measurement inaccuracy.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the application specific embodiment or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the application, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram for the verticality measurement device that the embodiment of the present application one provides；
Fig. 2 is the another structural schematic diagram for the verticality measurement device that the embodiment of the present application one provides；
Fig. 3 is the structural schematic diagram for the verticality measurement device that the embodiment of the present application two provides；
Fig. 4 is the structural schematic diagram for the graduation mark that the embodiment of the present application two provides；
Fig. 5 is the application schematic diagram for the verticality measurement device that the embodiment of the present application two provides.
Appended drawing reference:
1- fixing piece, 2- vertical, 21- suspension line, 22- plumb bob, 3- radix saposhnikoviae box, the side of 31- open box, 32- open box
Bottom surface, 321- drainage hole, 322- graduation mark, 4- peephole, 5- drilling machine, 6- Grouting Pipe, 7- spray head, 8- grouting pressure pump, 9-
Pulp storage tank, 10- cement bin, 11- slurrying pond, 12- water tank.
Specific embodiment
It is clearly and completely described below in conjunction with technical solution of the attached drawing to the application, it is clear that described implementation
Example is some embodiments of the present application, instead of all the embodiments.
The component of the embodiment of the present application for usually describing and showing in attached drawing here can be with a variety of different configurations
To arrange and design.Therefore, the detailed description of the embodiments herein provided in the accompanying drawings is not intended to limit below and is wanted
The scope of the present application of protection is sought, but is merely representative of the selected embodiment of the application.
Based on the embodiment in the application, those of ordinary skill in the art are obtained without making creative work
The every other embodiment obtained, shall fall in the protection scope of this application.
In the description of the present application, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for describe the application and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore should not be understood as the limitation to the application.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present application, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in application.
Embodiment one
Referring to shown in Fig. 1 to Fig. 2, embodiments herein one provides a kind of verticality measurement device, including fixing piece
1, vertical 2, windproof box 3 and peephole 4；Vertical 2 includes suspension line 21 and plumb bob 22, and one end of suspension line 21 and plumb bob 22 connect
It connects；Fixing piece 1 is connect with the other end of determinand and suspension line 21 respectively, so that plumb bob 22 is sagging along gravity direction；Windproof box 3
It is connect with determinand, plumb bob 22 is located in windproof box 3；Peephole 4 is connect with windproof box 3.
In this embodiment, verticality measurement device provided by the present application includes fixing piece 1, vertical 2, windproof box 3 and sees
Examine mirror 4.Wherein, vertical 2 includes suspension line 21 and plumb bob 22, and one end of suspension line 21 connect with fixing piece 1, suspension line 21 it is another
One end is connect with plumb bob 22, and since fixing piece 1 is connect with determinand, vertical 2 is hanging near determinand by fixing piece 1.It hangs down
Direction, that is, terrestrial gravitation line direction of the ball 22 due to gravity straightening hanging line 21, when freely sagging.It is provided by the present application anti-
Wind box 3 is also connect with determinand, i.e., is fixed to windproof box 3, and windproof box 3 is located at the lower section of fixing piece 1, plumb bob 22
When straightening hanging line 21, plumb bob 22 is located in windproof box 3.Peephole 4 provided by the present application is connect with windproof box 3, then grasping
Making personnel can be compared by the sagging direction of the observation plumb bob 22 of peephole 4 and the direction of determinand, and then judge determinand
It is whether vertical with ground holding.
Specifically, when operator is worked using verticality measurement device provided by the present application, it may in field work
Blow Deng adverse weathers situation can be encountered, the setting of windproof box 3 ensure that plumb bob 22 is not influenced by wind-force, it is ensured that under plumb bob 22
Vertical direction is the direction of terrestrial gravitation line.And in field construction due to condition of construction complexity, operator is cannot be direct
When the case where observing plumb bob 22, plumb bob 22 is observed by the image in 4 mirror of peephole, can facilitate operator clearly to
Survey object whether with ground keep plumbness.
Verticality measurement device provided by the present application can be realized and avoid hanging down for the direct naked-eye observation vertical 2 of operator
It is straight to spend, and then it be easy to cause the measurement of verticality to form relatively large deviation, and when blowing equal adverse weathers situation, squareness measurement
Device can impact observation effect to avoid weather, in turn result in the technical problem of squareness measurement inaccuracy.
In the optional scheme of the embodiment, the material of suspension line 21 is that the material of wirerope or suspension line 21 is nylon
Rope.
In this embodiment, the material of suspension line 21 is wirerope, wirerope have intensity it is high, from heavy and light, stable working,
The characteristics of being not easy whole root fracture suddenly, reliable operation；The material of suspension line 21 is nylon rope, and nylon rope is by nylon material system
At rope, be called and release cord, anti-static sampling rope, nylon rope is tough and tensile and hardness is high, heat-resistant quality with higher and wear-resisting
Characteristic is suitble to the use in special operation condition.
In the optional scheme of the embodiment, the material of plumb bob 22 is copper alloy.
In this embodiment, the material of plumb bob 22 is copper alloy, and the density of copper alloy is larger, about 8.2~8.9g/
cm3, plumb bob 22 is made using Cu alloy material, the small volume of plumb bob 22 under equivalent weight may be implemented, is convenient for operator
It carries, and the density of plumb bob 22 is big, weight is big, when discharging plumb bob 22, but realizes its position of 22 immediate stability of plumb bob；And by
In the Thermal conductivity and hardly carbon containing speciality of copper, when making tool and object friction or hitting, generated in the short time
Heat is absorbed and conducts, and another reason rubs since copper itself is relatively soft and has good deformability when hitting, be not easy to produce
Raw minute metallic particle, then we are hardly visible spark, and quality is stablized, had excellent performance.
In the optional scheme of the embodiment, windproof box 3 is open-topped open box；Plumb bob 22 is located at the box of open box
In chamber；The side 31 of open box is connect with determinand.
In this embodiment, windproof box 3 is open-topped open box, and plumb bob 22 and suspension line connected to it 21 can
To pass through from the opening at the top of windproof box 3, the position of plumb bob 22 is fallen in windproof box 3, then in equal adverse weathers of blowing
When situation, windproof box 3 can prevent wind from blowing plumb bob 22, cause the shaking of plumb bob 22, and vertical 2 is caused to measure hanging down for determinand
The situation of straight degree inaccuracy.The side 31 of open box is connect with determinand, for realizing the fixation to open box；Optionally, it opens
The other faces of mouth box are connect with determinand, for realizing the fixation to open box.
In the optional scheme of the embodiment, drainage hole 321 is provided on the bottom surface 32 of open box.
In this embodiment, it is provided with drainage hole 321 on the bottom surface 32 of open box, the effect of drainage hole 321 is in wet weather
In the case of weather or other factors, water can be discharged in time after water inlet in windproof box 3, prevent ponding from influencing the vertical of vertical
State, and reduce the influence observed vertical, optionally, the quantity of drainage hole 321 is multiple.
In the optional scheme of the embodiment, windproof box 3 is in cylindrical structure, or windproof box 3 is in rectangular parallelepiped structure.
In the optional scheme of the embodiment, windproof box 3 is made of clear material.
In this embodiment, windproof box 3 is made of clear material, and optionally, transparent material can be polycarbonate, first propylene
Sour methyl esters (being commonly called as acrylic) or tempered glass etc..Transparent material is not only limited to above several in the present embodiment one, can also be with
Other transparent materials are freely chosen according to actual condition for making windproof box 3；Not for other transparent material the present embodiment one
It specifically repeats one by one again.
In the optional scheme of the embodiment, peephole 4 is plane mirror or peephole 4 is concave mirror.
In this embodiment, peephole 4 is plane mirror, and the effect of plane mirror is reflected the drift condition of vertical 2
Imaging, operator only need plane of vision mirror that can be immediately seen the degrees of offset of plumb bob 22, reduce staff in observation
Inconvenience；Peephole 4 is concave mirror, and concave mirror can carry out catoptric imaging to the drift condition of vertical 2, and be amplification
Picture.Staff is in observation, since peephole 4 can amplify imaging to the drift condition of vertical 2, in the sight of operator
Point position and verticality measurement device can also see offset feelings of the vertical 2 relative to determinand clearly in farther away situation
Condition.
In the optional scheme of the embodiment, fixing piece 1 is to be detachably connected with determinand；Windproof box 3 is with determinand can
Dismantling connection.
In this embodiment, fixing piece 1 is to be detachably connected with determinand, and calibration verticality is not needed in operation process
When, it can device is removed.For example, one end of fixing piece 1 is provided with external screw thread, internal screw thread is provided on determinand, it is fixed
External screw thread on part 1 is adapted with the internal screw thread of determinand, and fixing piece 1 can be threadedly coupled with determinand.It needs to illustrate
It is that fixing piece 1 is not only limited to rod-type structure shown in figure, is also possible to the structure of other shapes.Optionally, fixing piece 1
On may also set up magnetic mechanism, be adsorbed on determinand made of metal by magnetic adsorption capacity.
Windproof box 3 is to be detachably connected with determinand, when not needing calibration verticality in operation process, it can will fill
Set dismounting.Optionally, it is provided with connecting hole on windproof box 3, windproof box 3 can be fixed on determinand by connecting hole.
The connection type of fixing piece 1 and determinand, windproof box 3 and determinand is not only limited to above several in the present embodiment one
Kind, the connection type of other forms can also be freely chosen according to actual condition, to realize fixed fixing piece 1, radix saposhnikoviae box 3
Function；Connection type the present embodiment one of other forms is no longer specifically repeated one by one.
Embodiment two
Verticality measurement device in the embodiment two is improvement on the basis of embodiment one, disclosed in embodiment one
Technology contents not repeated description, one disclosure of embodiment also belong to two disclosure of embodiment.
Referring to shown in Fig. 3 to Fig. 4, in the embodiment, graduation mark 322 is provided on the bottom surface 32 of open box, plumb bob 22
Lower section has cutting-edge structure, and the specific location that cutting-edge structure is directed toward graduation mark 322 is used to measure the verticality of determinand.
Specifically, the application is provided with graduation mark 322 on the bottom surface of open box 32,22 lower end of plumb bob is tied with tip
Structure, the specific location that the cutting-edge structure of plumb bob 22 is directed toward graduation mark 322 can react the vertical extent of determinand.Determinand with
In the state that ground is vertical, the cutting-edge structure of plumb bob 22 is directed toward the base position of graduation mark 322, shown in Figure 4, base position
For center location；It is tilted in determinand, when not keeping plumbness with ground, the cutting-edge structure of plumb bob 22 is i.e. from base position
The specific scale of graduation mark 322 is directed toward in offset, shown in Figure 4, and the dot in figure on graduation mark 322 indicates 22 tip of plumb bob
Pointed location, the specific scale being directed toward by the cutting-edge structure of plumb bob 22, can be to the inclination journey of the clear determinand of Observation personnel
Degree.
In the optional scheme of the embodiment, graduation mark 322 is used to measure the deviation angle or graduation mark 322 of plumb bob 22
For measuring the offset distance of plumb bob 22.
In this embodiment, graduation mark 322 is used to measure the deviation angle of plumb bob 22, shown in Figure 4, in suspension line 21
Length when being fixed length, the limbus line 322 in graduation mark 322 can indicate the deviation angle of plumb bob 22；In suspension line 21
Length it is variable when, the limbus line 322 in graduation mark 322 can indicate the offset distance of plumb bob 22, pass through plumb bob 22
21 length of offset distance and corresponding suspension line, can calculate the deviation angle of plumb bob 22.In Fig. 4, radial quarter
Degree line 322 is used to indicate the offset direction of plumb bob 22.
In the optional scheme of the embodiment, the bottom surface 32 of peephole 4 and open box is in set angle, so that peephole 4 is anti-
Penetrate the specific location that plumb bob 22 is directed toward graduation mark 322.
In this embodiment, the bottom surface 32 of peephole 4 and open box is in set angle, for the bottom surface 32 to open box
Graduation mark 322 carries out catoptric imaging, and the degrees of offset of vertical 2 is observed convenient for operator.Optionally, peephole 4 and spacious
32 angulation of bottom surface of mouthful box is adjustable, specifically, the connecting band of one adjustable length of setting, connecting band respectively with it is spacious
The bottom surface 32 of mouthful box and peephole 4 connect, and adjust the length of connecting band, can regulation inspection glass 4 and open box 32 institute of bottom surface
Angled size.By adjusting the 32 angled size of institute of bottom surface of peephole 4 and open box, but realize that Observation personnel is located at not
With observation point when, the drift condition of plumb bob 22 can be clearly observed.
Shown in Figure 5, the verticality measurement device that embodiments herein provides is during Construction of High Pressure Jet Grouting Pile
Concrete application during, verticality measurement device can be installed on the drilling cramp or framework platform of drilling machine, wherein windproof box
3 and peephole 4 be set in the altitude range on opposite 1~1.5 meter of ground, the Observation personnel observation convenient for standing on the ground is hung down
The drift condition of ball 22.It, can also be with it should be noted that the installation site of verticality measurement device is not only limited to above two
Other installation sites are freely chosen according to actual condition, to realize the function of fixed vertical degree measuring device.
Embodiment three
The embodiment of the present application three provides a kind of degree control system, hangs down including what embodiment one, embodiment two provided
Straight degree measuring device.Thus, whole advantageous effects with the device, here, repeating no more.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the application, rather than its limitations；To the greatest extent
Pipe is described in detail the application referring to foregoing embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, each embodiment technology of the application that it does not separate the essence of the corresponding technical solution
The range of scheme.In addition, it will be appreciated by those of skill in the art that although some embodiments described herein include other implementations
Certain features rather than other feature included by example, but the combination of the feature of different embodiments means in the application
Within the scope of and form different embodiments.For example, in the following claims, embodiment claimed
It is one of any can in any combination mode come using.
Claims (10)
1. a kind of verticality measurement device, which is characterized in that including fixing piece, vertical, windproof box and peephole；The vertical packet
Suspension line and plumb bob are included, one end of the suspension line is connect with the plumb bob；The fixing piece respectively with determinand and described outstanding
The other end of hanging wire connects, so that the plumb bob is sagging along gravity direction；The radix saposhnikoviae box is connect with the determinand, described to hang down
Ball is located in the windproof box；The peephole is connect with the windproof box.
2. verticality measurement device according to claim 1, which is characterized in that the radix saposhnikoviae box is open-topped opening
Box；The plumb bob is located in the box chamber of the open box；The side of the open box is connect with the determinand.
3. verticality measurement device according to claim 2, which is characterized in that be provided with quarter on the bottom surface of the open box
Line is spent, the lower section of the plumb bob has cutting-edge structure, and the cutting-edge structure is directed toward the specific location of the graduation mark for measuring
The verticality of determinand.
4. verticality measurement device according to claim 3, which is characterized in that the graduation mark is for measuring the plumb bob
Deviation angle or the graduation mark be used to measure the offset distance of the plumb bob.
5. verticality measurement device according to claim 4, which is characterized in that the bottom of the peephole and the open box
Face is in set angle, so that the peephole reflects the specific location that the plumb bob is directed toward the graduation mark.
6. verticality measurement device according to claim 2, which is characterized in that the row of being provided on the bottom surface of the open box
Water hole.
7. verticality measurement device according to claim 6, which is characterized in that the radix saposhnikoviae box is made of clear material.
8. verticality measurement device according to claim 1, which is characterized in that the peephole is plane mirror, Huo Zhesuo
Stating peephole is concave mirror.
9. verticality measurement device according to claim 1, which is characterized in that the fixing piece is with the determinand can
Dismantling connection；The radix saposhnikoviae box is to be detachably connected with the determinand.
10. a kind of degree control system, which is characterized in that including squareness measurement described in any one of claims 1 to 9
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821435877.3U CN208780206U (en) | 2018-08-31 | 2018-08-31 | Verticality measurement device and degree control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821435877.3U CN208780206U (en) | 2018-08-31 | 2018-08-31 | Verticality measurement device and degree control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208780206U true CN208780206U (en) | 2019-04-23 |
Family
ID=66159549
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821435877.3U Expired - Fee Related CN208780206U (en) | 2018-08-31 | 2018-08-31 | Verticality measurement device and degree control system |
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| Country | Link |
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| CN (1) | CN208780206U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109115201A (en) * | 2018-08-31 | 2019-01-01 | 中铁六局集团广州工程有限公司 | Verticality measurement device and degree control system |
| CN111981960A (en) * | 2020-08-20 | 2020-11-24 | 中铁六局集团天津铁路建设有限公司 | Frame bridge center line deviation measuring device with adjustable height and angle and movable scale plate |
-
2018
- 2018-08-31 CN CN201821435877.3U patent/CN208780206U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109115201A (en) * | 2018-08-31 | 2019-01-01 | 中铁六局集团广州工程有限公司 | Verticality measurement device and degree control system |
| CN111981960A (en) * | 2020-08-20 | 2020-11-24 | 中铁六局集团天津铁路建设有限公司 | Frame bridge center line deviation measuring device with adjustable height and angle and movable scale plate |
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