CN112065078B - Vertical adjusting system - Google Patents
Vertical adjusting system Download PDFInfo
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- CN112065078B CN112065078B CN202011019822.6A CN202011019822A CN112065078B CN 112065078 B CN112065078 B CN 112065078B CN 202011019822 A CN202011019822 A CN 202011019822A CN 112065078 B CN112065078 B CN 112065078B
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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
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/18—Adjusting tools; Templates
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
A droop adjustment system comprising: the sagging measuring device is used for measuring the prefabricated part to obtain measuring parameters; the operation module receives the measurement parameters and calculates verticality; the vertical adjusting rod is used for supporting the prefabricated part and comprises a universal interface through which an external mechanism can adjust the length of the vertical adjusting rod; the control module sends out corresponding control instructions according to the verticality; the electric tool can be connected with the universal interface of the vertical adjusting rod, receives a control command transmitted by the control module, and adjusts the length of the vertical adjusting rod according to the command, wherein at least one of the device, the operation module, the control module and the electric tool transmits data in a wireless mode. The calculation of verticality and the generation of control instructions in the system are automatically realized according to the operation module, and data are transmitted among the devices in a wireless communication mode, so that the timeliness and the accuracy of the data are ensured. The system is convenient to use, can improve the working efficiency, improves the verticality adjusting precision, and reduces the labor intensity.
Description
Technical Field
The invention relates to the field of building construction, in particular to a verticality adjusting system for adjusting the placement verticality of prefabricated parts.
Background
With large-area application of the fabricated concrete structure, in the process of constructing the prefabricated building, the accuracy control of the verticality adjustment is important, but the efficiency is also a key point from hoisting, positioning, temporary fixing, fine-tuning the verticality to final positioning of the prefabricated component. In the construction process of the vertical members of the assembled concrete structure, the perpendicularity of the members after being fixed in place directly influences the quality of the whole structure and the construction control of the members of the subsequent floors.
At present, a construction method of manually measuring verticality and manually adjusting is adopted in a construction site. The method has the defects that the vertical precision is not high by means of visual inspection and manual adjustment, the skill and experience of operators are required to be high, manual direct adjustment is laborious, and the efficiency is low. If the management link is lost in the whole process, the problem of low efficiency and poor quality is caused.
Along with the development of building industrialization, more and more automatic mechanical equipment is put into the application of building engineering, and how to utilize the automatic equipment to improve the overall efficiency of the sagging adjustment work, so that in the installation process of prefabricated components, the prefabricated components can meet the requirements of ensuring the construction quality and considering the construction efficiency, and the problem to be solved is urgent at present.
Disclosure of Invention
In order to solve the problems, the invention provides the verticality adjusting system which can improve the working efficiency, improve the verticality adjusting precision and reduce the labor intensity.
The technical scheme of the sagging adjusting system is as follows:
a sag adjustment system for adjusting the placement verticality of a prefabricated component, comprising:
the sagging measuring device is used for measuring the prefabricated component to obtain measurement parameters;
the operation module receives the measurement parameters transmitted by the sagging measurement device and calculates the verticality of the prefabricated part according to the measurement parameters;
the vertical adjusting rod is used for supporting the prefabricated part and comprises a universal interface through which an external mechanism can adjust the length of the vertical adjusting rod;
the control module receives the perpendicularity transmitted by the operation module and sends out a corresponding control instruction according to the perpendicularity;
the electric tool can be connected with the universal interface of the vertical adjusting rod, receives the control command transmitted by the control module, adjusts the length of the vertical adjusting rod according to the control command,
at least one of the sagging measuring device, the operation module, the control module and the electric tool transmits data in a wireless mode.
Preferably, the method is characterized in that,
the operation module and the control module are integrated in the sagging measuring device, and the sagging measuring device transmits the control instruction to the electric tool in a wireless mode or
The operation module is integrated in the verticality measuring device, the control module is integrated in the electric tool, and the verticality measuring device transmits the verticality to the electric tool in a wireless mode.
Preferably, the droop adjusting system further comprises a handheld mobile device, the operation module and/or the control module operates on the handheld mobile device in a software mode, the droop measuring device sends the measurement parameters or verticality to the handheld mobile device in a wireless mode, and after the data are processed by the operation module and/or the control module, the handheld mobile device sends the verticality or the control instruction to the electric tool in a wireless mode.
Preferably, the vertical adjusting rod comprises a worm extending along the length direction of the vertical adjusting rod and a turbine vertically arranged on the worm, the turbine is meshed with the worm, the worm is driven by the turbine to realize the expansion and contraction of the whole rod piece, and the turbine shaft is provided with the universal interface.
Preferably, the drop bar further comprises a manual wheel, which can be matched to the universal interface.
Preferably, the electric tool is a hand-held electric wrench, which can automatically control forward rotation or reverse rotation according to set parameters, and the hand-held electric wrench comprises a wireless module, a motor and a socket wrench, and the socket wrench can be matched with the universal interface on the hanging rod.
Preferably, the control module calculates the rotation direction and the rotation number of the hand-held electric wrench according to the perpendicularity to form a control instruction, and the hand-held electric wrench automatically works according to the control instruction.
Preferably, in the whole verticality adjusting process, the verticality measuring device detects the placement verticality of the prefabricated part in real time, and the control module sends a control instruction to the handheld electric wrench according to the real-time verticality, so that the handheld electric wrench rotates forwards or reversely until the prefabricated part vertically sends a stop command, and the verticality adjusting process is finished.
Preferably, the hand-held electric wrench further comprises a display panel and/or a USB interface.
Preferably, the vertical measuring device comprises a base and a vertical measuring rod, one end of the vertical measuring rod is connected with the base, the vertical measuring rod comprises a first ranging module and a second ranging module which are arranged at intervals along the extending direction of the axis of the vertical measuring rod, the first ranging module is connected with the vertical measuring rod through a first pivoting structure, the second ranging module is connected with the vertical measuring rod through a second pivoting structure, and the rotating shafts of the first pivoting structure and the second pivoting structure are perpendicular to the axis of the vertical measuring rod.
Preferably, the measurement parameters output by the sagging measurement device comprise angle values of the two ranging modules and distance values of the measured object.
Preferably, the two ranging modules are both laser rangefinders.
According to the verticality adjusting system, calculation of verticality and what action is to be executed according to the verticality are automatically achieved by the operation control module in the system according to the measured data, and data are transmitted among the devices in a wireless communication mode, so that timeliness and accuracy of the data are guaranteed. The system is convenient to use, can improve the working efficiency, improves the verticality adjusting precision, and reduces the labor intensity.
Drawings
FIG. 1 is a schematic view of a preferred embodiment 1 of a sag adjustment system of the present invention;
FIG. 2 is a schematic view of a drop bar in example 1 of the present invention;
FIG. 3 is a schematic view showing the structure of a telescopic adjusting mechanism in a vertically adjusting lever according to embodiment 1 of the present invention;
FIG. 4 is a schematic view of a hand-held electric wrench according to embodiment 1 of the present invention;
FIG. 5 is a schematic view of a sagging measuring apparatus according to embodiment 1 of the present invention;
FIG. 6 is a schematic view of a drop bar in example 2 of the present invention;
fig. 7 is a schematic illustration of inclination calculation in a preferred embodiment of the present invention.
Detailed Description
The droop adjusting system provided by the invention is further described in detail below with reference to the accompanying drawings and specific embodiments. Advantages and features of the invention will become more apparent from the following description and from the claims. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for convenience and clarity in aiding in the description of embodiments of the invention.
Example 1:
fig. 1 shows a sagging system according to a preferred embodiment of the present application, which is shown for adjusting the placement verticality of a prefabricated part 4, the sagging system comprising a sagging measuring device 1, a power tool 2 and a sagging adjusting rod 3.
In this system, the sagging measuring apparatus 1 is used to measure the prefabricated member 4 to obtain a measurement parameter. One end of the hanging-adjusting rod 3 is connected with the reference horizontal plane 5, and the other end is connected with the prefabricated part 4 to form an inclined supporting structure so as to support the prefabricated part 4. The drop rod 3 includes a universal interface through which the power tool 2 can adjust the length of the drop rod.
The system provided by the application is an automated system, and therefore the system further comprises: the operation module receives the measurement parameters transmitted by the sagging measurement device 1 and calculates the verticality of the prefabricated part 4 according to the measurement parameters; the control module receives the perpendicularity data transmitted by the operation module, and sends out a corresponding control instruction according to the perpendicularity data, and the control instruction can control the electric tool 2 to perform corresponding actions so as to adjust the length of the hanging rod 3.
The operation module and the control module are not shown in fig. 1, because they are not separate devices but are integrated in the sagging measuring apparatus 1 or the electric tool 2, in this embodiment, the operation module and the control module are integrated in the sagging measuring apparatus 1, the operation module and the control module share one MCU, the sagging measuring apparatus 1 directly calculates the verticality according to the measured parameters after measuring the prefabricated member 4, and calculates the position where the sagging adjusting rod 3 should reach according to the verticality, and gives a corresponding instruction to the electric tool 2. In another preferred embodiment, the operation module may be integrated in the verticality measuring device 1, and the control module may be integrated in the electric tool 2, where the verticality measuring device 1 calculates the verticality through the operation module and then directly transmits the calculated verticality to the electric tool 2, and then the control module in the electric tool 2 selects what operation should be adopted according to the verticality, so as to directly control the action of the electric tool 2. The control module is integrated in the electric tool, so that tools of more types can be matched, and each tool can directly send out an operation instruction according to own parameters and operation modes only by obtaining one perpendicularity data. It is of course also possible to integrate the arithmetic module into the power tool 2. However, in spite of the above combinations, there is a data transmission process in between, and when the modules are integrated in a device, data can be directly transmitted by way of a guided connection. In this embodiment, if the operation module and the control module are integrated in the sagging measuring device 1, the measurement parameters and the verticality data can be directly transmitted, but the transmission of the control command needs to be from the sagging measuring device 1 to the electric tool 2, if the connection between the control command and the sagging measuring device needs to be conducted by wires, the application range of the system is greatly limited, so that in the system, the data transmission across the devices is performed in a wireless manner. The integration mode for the operation module and the control module can be selected in various ways, so that at least one of the sagging measuring device 1, the operation module, the control module and the electric tool 2 in the system can transmit data in a wireless mode. The wireless transmission mode may be bluetooth, wi F i, public mobile communication network, etc., which is not limited in this application.
Fig. 2 shows a specific structure of the hanging rod 3 in the present embodiment. Two connecting structures 302 are respectively arranged at two ends of the hanging adjusting rod 3 as shown in the figure. The body of the hanging rod 3 is a supporting rod 301, and an adjusting mechanism is arranged at the end of the supporting rod, and particularly as shown in the enlarged view of fig. 3, the adjusting mechanism comprises a housing 307, a worm 304 extending along the length direction of the supporting rod 301, a turbine 303 vertically arranged with the worm 304, and a flange nut 306 sleeved on the worm 304. Wherein the flange nut 306 is rigidly connected to the end of the support rod 301. The worm wheel 303 is meshed with the worm 304, and the worm 304 can be driven by rotating the worm wheel 303 to realize the extension and retraction of the whole rod piece. The shaft of the turbine 303 is provided with a universal interface which can be matched with various electric tools, such as an electric wrench, and the action of the turbine 303 is driven and controlled by the electric tools. In addition, in order to adapt to various situations, the universal interface can be matched with the manual rotating wheel 305, and when the electric tool cannot be used due to the unestimulable factors on the construction site, the manual rotating wheel can be used for driving, so that the construction is not affected. In this embodiment, the reduction ratio of the worm gear is 24:1, save effort by 1/24 compared with the traditional manual rotation handle.
The electric tool 2 in the present embodiment is a hand-held electric wrench, which can automatically control forward rotation or reverse rotation according to set parameters. The structure of the handheld electric wrench of this embodiment includes a switch 201 disposed on a handle, a USB interface 202 disposed on a main body, a wireless module 203, a display panel 204, a motor and a socket wrench 205 as shown in fig. 4. The socket wrench 205 can be matched with a universal interface on the hanging rod 3, and when the socket wrench 205 is sleeved on the shaft of the turbine 303, the electric wrench can drive the turbine 303 to rotate. The wireless module 203 is used for receiving data transmitted by the sagging measuring device 1. Related parameter values of engineering quality control such as verticality deviation value can be displayed on the display screen, so that the inspection is convenient. In addition, the electric wrench also comprises an internal storage module, and the electric wrench can automatically record data such as a serial number and a sag adjustment control parameter for construction according to a scheme requirement sequence. The data can be saved to the USB flash disk through the USB interface 202 as construction process data. The sagging adjustment condition of each PC wallboard can be inquired and printed through a computer.
In a specific sagging adjusting process, when the prefabricated part 4 is inclined inwards, the hand-held electric wrench rotates positively to enable the length of the sagging adjusting rod 3 to be prolonged; when tilting outwards, the inversion shortens the vertical adjusting rod 3, thereby achieving the effect of adjusting the verticality. Thus, the control command received at the hand-held power wrench should include the direction of rotation and the number of turns. In this embodiment, the control command is completed by the control module, and the control module integrated in the sagging measuring device 1 calculates the rotation direction and the rotation number of the hand-held electric wrench according to the verticality to form the control command, and sends the control command by the hand-held electric wrench in a wireless manner. The hand-held electric wrench automatically adjusts the sag after receiving the control instruction and automatically stops after finishing the specified turns, has low requirements on the skills and experience of operators, solves the problem of human influence, and improves the working efficiency and the working quality.
In another preferred embodiment, a feedback control method of real-time measurement can also be adopted, in the whole verticality adjustment process, the verticality of the prefabricated component 4 placed by the verticality measuring device 1 is detected in real time, and the control module determines whether the hand-held electric wrench should rotate positively or negatively according to the real-time verticality, so as to form corresponding control instructions but not calculate the number of rotation turns. The verticality measuring device 1 sends the control instruction to the hand-held electric wrench, so that the hand-held electric wrench starts to rotate forwards or reversely according to the control instruction, the verticality measuring device 1 continues to measure verticality in the engineering until the verticality of the prefabricated part 4 is zero, when the verticality measuring device is completely vertical, the control instruction of stopping is sent out again, the hand-held electric wrench stops immediately after receiving the instruction, and the whole verticality adjusting process is finished.
As shown in fig. 5, the sagging measuring device 1 in this embodiment includes a base 101 and a sagging adjusting rod 102, the sagging measuring rod 102 includes two ranging modules 103, 104 arranged at intervals in a vertical direction, in this embodiment, the two ranging modules 103, 104 are both laser ranging apparatuses, and in other preferred embodiments, other ranging apparatuses are also possible. Generally, the two ranging modules can be arranged at any position of the rod, as long as a certain distance exists between the two ranging modules, but in a preferable scheme, the two ranging modules are respectively arranged at two ends of the vertical measuring rod, so that the length of the rod body can be effectively utilized. In this embodiment, the first ranging module 103 is disposed near the top end of the drop bar and is connected to the drop bar 102 by a first pivot structure. The second ranging module 104 is disposed at a position of the drop pole near the base 101 and is connected to the drop pole 102 through a second pivot structure. The axes of rotation of the first and second pivoting structures are perpendicular to the axis of the drop bar 102, so that both distance measuring modules 103, 104 can be adjusted in angle in a plane perpendicular to the drop plane to be measured of the prefabricated part 4. The angle of the ranging modules 103 and 104 can be adjusted, so that the sagging measuring device 1 can adapt to objects to be measured with different sizes, one beam of laser is hit to the top of the object to be measured, and the other beam of laser is hit to the bottom, and therefore, the object to be measured with any height can obtain smaller verticality deviation. Since the angles of the ranging modules 103, 104 can be adjusted, four parameters are needed to calculate the perpendicularity, namely the ranging value (a) of the first ranging module 103, the angle data (α) of the first ranging module 103, the ranging value (b) of the second ranging module 104, and the angle data (β) of the second ranging module 104.
Next, we will describe the principle of calculating the verticality with reference to fig. 7, in which two points D, C respectively represent the positions of the first ranging module 103 and the second ranging module 104, and A, B is the intersection point of the ranging laser and the measured object. The distance measurement values ad=a, bc=b, the two measurement point distances cd=z, α, β are the angles between the sensor and the horizontal line (defined as positive counterclockwise, negative clockwise), k is BC to Y-axis slope, and θ is the perpendicularity deviation angle. Set point D as origin of coordinates, A (x 1 ,y 1 )、B(x 2 ,y 2 )。
Is available in the form of
Can be obtained after conversion
Calculating k to obtain
Finally available θ= -arctank
Note that the above calculations all use metric units.
When theta is positive, the perpendicularity of the measured object deflects to the direction of the sagging measuring device; when theta is negative, the perpendicularity of the measured object is reversely deflected to the sagging measuring device; when θ is 0, the measured object is vertical.
Example 2:
fig. 6 shows another preferred embodiment of the present application, in which the basic structure is similar to that of embodiment 2 and embodiment 1, and the sagging measuring device 1, the electric tool 2 and the sagging adjusting lever 3 are also included, and the specific forms of these devices are similar to that of embodiment 1, and will not be repeated here.
The main difference between the embodiment 2 and the embodiment 1 is that the handheld mobile device 6 is added, and along with the development of the smart phone, many devices can be controlled through the mobile phone and the tablet, and in the droop adjusting system provided by the application, some operation works in the application can be realized by using the handheld mobile device such as the mobile phone and the tablet. In this embodiment the control module runs in software on the hand-held mobile device 6, in particular a smart phone, on which an App is mounted that can control the power tool 2. The verticality measuring device 1 firstly measures the verticality of the prefabricated part 4, and then sends the verticality to the smart phone in a wireless mode after calculating the verticality, an App on the smart phone is a control module, and a corresponding control instruction is selected to send to the electric tool 2 after receiving the verticality data. The electric power tool 2 receives the control command and operates according to the command. In this embodiment, the wireless transmission mode may directly use a mobile communication network of a mobile phone, such as a 4G network or a 5G network.
In another preferred embodiment, the operation module and the control module may be set in the mobile phone in a software mode, so that the calculation of verticality and the selection of the control instruction can be completed at the mobile phone end only by directly taking the mobile phone to read the measurement parameters of the sagging measuring device 1. Meanwhile, a plurality of expansion functions can be added in the software, such as printing two-dimensional codes on each prefabricated plate, scanning the codes before sagging, recording sagging adjusting data of each plate, and the like. The present application does not limit these extended functions.
The above description is only illustrative of the preferred embodiments of the present invention and is not intended to limit the scope of the present invention, and any alterations and modifications made by those skilled in the art based on the above disclosure shall fall within the scope of the appended claims.
Claims (10)
1. A sag adjustment system for adjusting the placement verticality of a prefabricated component, comprising:
the sagging measuring device is used for measuring the prefabricated component to obtain measurement parameters; the vertical measuring device comprises a base and a vertical measuring rod, one end of the vertical measuring rod is connected with the base, the vertical measuring rod comprises a first ranging module and a second ranging module which are arranged at intervals along the extending direction of the axis of the vertical measuring rod, the first ranging module is connected with the vertical measuring rod through a first pivoting structure, the second ranging module is connected with the vertical measuring rod through a second pivoting structure, and the rotating shafts of the first pivoting structure and the second pivoting structure are perpendicular to the axis of the vertical measuring rod;
the operation module receives the measurement parameters transmitted by the sagging measurement device and calculates the verticality of the prefabricated part according to the measurement parameters;
the vertical adjusting rod is used for supporting the prefabricated part and comprises a universal interface, and an external mechanism adjusts the length of the vertical adjusting rod through the universal interface;
the control module receives the perpendicularity transmitted by the operation module and sends out a corresponding control instruction according to the perpendicularity;
the electric tool is connected with the universal interface of the vertical adjusting rod, receives a control instruction transmitted by the control module and adjusts the length of the vertical adjusting rod according to the control instruction;
at least one of the sagging measuring device, the operation module, the control module and the electric tool transmits data in a wireless mode; the measurement parameters output by the sagging measurement device comprise the angle values of the two ranging modules and the distance value of the measured object.
2. The roll-off system of claim 1, wherein,
the operation module and the control module are integrated in the sagging measuring device, and the sagging measuring device transmits the control instruction to the electric tool in a wireless mode or
The operation module is integrated in the verticality measuring device, the control module is integrated in the electric tool, and the verticality measuring device transmits the verticality to the electric tool in a wireless mode.
3. The droop adjustment system according to claim 2, further comprising a handheld mobile device, wherein the operation module and/or the control module is/are operated on the handheld mobile device in a software form, the droop measurement device sends the measurement parameter or the verticality to the handheld mobile device in a wireless mode, and after the data is processed by the operation module and/or the control module, the handheld mobile device sends the verticality or the control instruction to the electric tool in a wireless mode.
4. A drop regulating system according to any one of claims 1 to 3, wherein the drop regulating rod comprises a worm extending along the length direction of the drop regulating rod and a turbine vertically arranged with the worm, the turbine is meshed with the worm, the turbine drives the worm to realize the expansion and contraction of the whole rod, and the turbine shaft is provided with the universal interface.
5. The drop system of claim 4, wherein the drop lever further comprises a manual wheel that mates with the universal interface.
6. A droop adjustment system according to any one of claims 1 to 3, wherein the power tool is a hand-held power wrench which automatically controls forward or reverse rotation according to set parameters, the hand-held power wrench comprising a wireless module, a motor and a socket wrench which mates with the universal interface on the droop adjustment lever.
7. The droop adjustment system of claim 6, wherein the control module calculates a direction of rotation and a number of turns of the hand-held electric wrench according to the perpendicularity to form a control command, and the hand-held electric wrench automatically works according to the control command.
8. The system of claim 6, wherein the verticality measuring device detects the verticality of the prefabricated part in real time during the whole verticality adjusting process, and the control module sends a control command to the hand-held electric wrench according to the real-time verticality so that the hand-held electric wrench rotates forward or backward until the prefabricated part vertically sends a stop command, and the verticality adjusting process is finished.
9. The droop adjustment system of claim 6, wherein the hand-held power wrench further comprises a display panel and/or a USB interface.
10. The roll-off system of claim 9, wherein both ranging modules are laser rangefinders.
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| CN202011019822.6A CN112065078B (en) | 2020-09-25 | 2020-09-25 | Vertical adjusting system |
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| CN202011019822.6A CN112065078B (en) | 2020-09-25 | 2020-09-25 | Vertical adjusting system |
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| CN111827689A (en) * | 2020-06-17 | 2020-10-27 | 上海建工二建集团有限公司 | Intelligent verticality adjusting and mounting system and method for prefabricated part |
| CN112681771B (en) * | 2020-12-15 | 2022-07-19 | 上海建工五建集团有限公司 | Intelligent leveling device and method for horizontal elevation of prefabricated part |
| CN113882686B (en) * | 2021-09-02 | 2023-05-26 | 上海建工四建集团有限公司 | Automatic handheld tool for prefabricated wallboard verticality adjustment |
| CN113863689B (en) * | 2021-09-02 | 2023-08-08 | 上海建工四建集团有限公司 | Construction method for adjusting sag of prefabricated wallboard by using automatic handheld tool |
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| CN102350671A (en) * | 2011-09-12 | 2012-02-15 | 黄修民 | Combination wrench for safely dismounting handheld electric tool |
| CN204252556U (en) * | 2014-11-27 | 2015-04-08 | 陈青帅 | A kind of plumb bob frame |
| CN205772900U (en) * | 2016-02-06 | 2016-12-07 | 上海建工五建集团有限公司 | The mechanical adjustment bar of self adaptation diagonal brace vertical adjustment |
| CN208996468U (en) * | 2018-08-30 | 2019-06-18 | 三一筑工科技有限公司 | Automatically adjust bearing diagonal |
| CN209793590U (en) * | 2019-04-19 | 2019-12-17 | 新疆送变电有限公司 | Remote control visual electric wrench |
| CN111561166B (en) * | 2020-07-14 | 2020-10-02 | 上海建工四建集团有限公司 | Integrated prefabricated wallboard verticality adjusting device |
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