CN215810827U - Device for measuring gradient and verticality - Google Patents
Device for measuring gradient and verticality Download PDFInfo
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- CN215810827U CN215810827U CN202122271323.2U CN202122271323U CN215810827U CN 215810827 U CN215810827 U CN 215810827U CN 202122271323 U CN202122271323 U CN 202122271323U CN 215810827 U CN215810827 U CN 215810827U
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Abstract
The utility model relates to a device for measuring gradient and verticality, which comprises a plurality of telescopic rods, wherein the telescopic rod at the left end is a main rod, the telescopic rod at the right end is a measuring rod, and the telescopic rod in the middle is an extension rod; an extension screw rod is arranged in the extension rod, a main body nut is fixedly arranged in the main body rod, and a main body motor is arranged in the main body rod; the right end of the extension screw rod is sleeved with a transmission gear, the right end of the extension screw rod is also fixedly provided with an extension nut, and an extension nut gear is arranged outside the extension nut; a measuring screw rod is arranged in the measuring rod and penetrates through the extending nut, and the right end of the measuring screw rod is rotationally fixed on the inner wall of the measuring rod through a measuring rotating assembly; the right end of the measuring rod is provided with a distance measuring device; a control main board is arranged in the main body rod, the control main board is in communication connection with the main body motor, and the control main board is in communication connection with the range finder; the main body rod is provided with a measurer for measuring levelness and verticality simultaneously. The slope of foundation ditch and the straightness that hangs down of vertical face are convenient for measure.
Description
Technical Field
The utility model belongs to the technical field of building construction devices, and particularly relates to a device for measuring gradient and perpendicularity.
Background
The existing building foundation pit is deeper and deeper, the requirement on the foundation pit supporting construction is stricter and stricter, the requirement on the slope-releasing precision of the upper portion of a supporting structure is higher, the existing common slope-releasing control generally needs two persons to be matched with each other, the depth and the horizontal distance of the slope-releasing are measured respectively, then the actual slope of the slope-releasing is obtained through calculation, the levelness cannot be accurately controlled during measurement, the measurement error is large, the measurement speed is slow, great potential hazards exist in the safety process of personnel measurement, and the method is not suitable for night construction.
In the prior art, application publication number is CN 108645380A's utility model patent, discloses a foundation ditch slope measuring device and method, this foundation ditch slope measuring device, including support frame, telescopic link subassembly, cotton rope and plumb bob, the support frame props up and locates on the side slope, the telescopic link subassembly includes telescopic link and dead lever, and the dead lever is installed on the support frame, is equipped with horizontal bubble on the dead lever, and telescopic link relative fixed rod is concertina movement, is drawn with the scale on the telescopic link, and the plumb bob is connected in the tip of cotton rope, is drawn with the scale on the cotton rope, and the plumb bob hangs in the tip of telescopic link. This foundation ditch slope measuring device, the operation of telescopic link and cotton rope all needs manual operation, and it is comparatively complicated to measure, and the reading also is artifical reading, produces great error easily, and when measuring darker foundation ditch, the plumb bob is difficult for seeing, and the position of uncertain plumb bob leads to measuring inaccurately.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a device for measuring gradient and perpendicularity, which solves the technical problem that the gradient of a foundation pit is inconvenient to measure in the prior art.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
the device for measuring the gradient and the verticality comprises a plurality of hollow telescopic rods extending in the left-right direction, wherein the telescopic rods gradually become thinner from left to right, the telescopic rod at the left end is a main rod, the telescopic rod at the right end is a measuring rod, and the telescopic rod in the middle is an extension rod; an extension lead screw is arranged in the extension rod, a main body nut matched with the extension lead screw is fixedly arranged in the main body rod, a main body motor used for driving the main body nut to rotate is arranged in the main body rod, and the extension lead screw is matched with the main body nut so that the extension lead screw drives the extension rod to stretch and retract in the main body rod in the rotating process; the right end of the extension screw rod is sleeved with a transmission nut which rotates along with the rotation of the extension screw rod, a transmission gear is arranged outside the transmission nut, the right end of the extension screw rod is also fixedly provided with an extension nut, and an extension nut gear which is meshed with the transmission gear is arranged outside the extension nut, so that the extension nut rotates and moves along with the transmission nut; the measuring device comprises a measuring rod, a measuring rotating assembly, a measuring nut, a measuring screw rod, a measuring rotating assembly and a measuring rotating assembly, wherein the measuring screw rod is arranged in the measuring rod and penetrates through the extending nut in the extending rod adjacent to the measuring rod; a distance meter for measuring the distance perpendicular to the direction of the measuring rod is arranged at the right end of the measuring rod; the main body rod is internally provided with a control main board which is in communication connection with the main body motor so as to calculate the moving distance of the range finder in the left-right direction on the measuring rod through the rotation of the main body motor, and the control main board is in communication connection with the range finder so as to control the range finder to measure; the main body rod is provided with a measurer for measuring levelness and verticality simultaneously.
Furthermore, the main body nut and the extension nut are supported and fixed through a supporting mechanism, and the supporting mechanism comprises a bracket and a sliding assembly matched with the bracket; the sliding assembly comprises a sliding chute arranged on the main body nut or the extension nut and a ball rolling in the sliding chute, the sliding chutes are arranged on the left side surface and the right side surface of the main body nut and the extension nut, and the sliding chutes are annular sliding chutes concentric with the main body nut or the extension nut; the support includes two connecting rods that are respectively and fixedly connected with the balls in the chutes on both sides.
Further, the support is fixed on the inner wall of main part pole or extension rod, all is provided with the groove of dodging that is used for dodging the support on the main part pole on the casing of extension rod and measuring stick.
Furthermore, a positioning sliding groove and a positioning sliding block which are matched with each other are arranged between every two adjacent telescopic rods, so that the two adjacent telescopic rods are prevented from rotating randomly in the relative sliding process.
Furthermore, the measuring rotating assembly comprises a supporting bearing sleeved on the measuring screw and a bearing frame used for fixing the supporting bearing on the inner wall of the measuring rod, a limiting step used for limiting the supporting bearing to slide in a translation mode relative to the measuring screw is arranged on the measuring screw, and the supporting bearing enables the measuring screw to rotate along with the extending nut to drive the measuring rod to move.
Further, be provided with the main part supporting seat in the main part pole, the main part supporting seat includes the backup pad that the upper and lower direction extends and the supporting platform that the left and right directions extends, and main part nut and main part motor are all installed on supporting platform.
Furthermore, a main body gear is arranged outside the main body nut, a motor gear is connected to a transmission rod of the main body motor, and the main body motor and the main body nut are in transmission connection through the motor gear and the main body gear.
Further, the range finder is a laser range finder.
Further, the range finder includes that measuring line and line weigh down, and the measuring line passes through the take-up reel to be fixed at the right-hand member of measuring stick, is connected with on the take-up reel to be used for driving take-up reel pivoted take-up reel motor, and the control switch setting of take-up reel motor is on the main part pole, control mainboard and take-up reel communication connection.
Furthermore, the measurer comprises a spherical measuring container, measuring liquid is filled in the spherical measuring container, measuring scales are arranged on the measuring container, and the spherical measuring container is provided with a transparent window for observing scales pointed by the measuring liquid and judging the levelness or the verticality through the corresponding measuring scales of the measuring liquid in the measuring container.
The utility model has the beneficial effects that:
the device for measuring the slope and the perpendicularity comprises a plurality of sections of telescopic rods, the telescopic rods are short in length when being folded, and convenient to store and transport, and when the device is used, the main body rods are short, do not need to occupy a large measuring space, and are convenient to measure. The automatic telescopic structure is convenient to operate, the measured data are obtained by calculation of the control main board, and the measured data are accurate. The distance of the distance meter in transverse movement can be calculated by the control main board according to the rotation of the main body motor, the distance meter can measure the vertical distance, and the gradient is calculated by the transverse distance and the vertical distance. The caliber can ensure that the telescopic rod keeps a horizontal state when the slope is measured, the measured slope value is more accurate, and the verticality can be measured when the caliber is used in the vertical direction.
Drawings
FIG. 1 is a schematic view of an apparatus for measuring slope and perpendicularity;
FIG. 2 is a cross-sectional view of the apparatus for measuring slope and perpendicularity in a collapsed state;
FIG. 3 is an enlarged view of a portion of FIG. 2;
FIG. 4 is a cross-sectional view of the apparatus for measuring slope and perpendicularity as it is extended for measurement;
FIG. 5 is an enlarged view of a portion of FIG. 4 at B;
FIG. 6 is an enlarged view of a portion of FIG. 4 at C;
FIG. 7 is an enlarged view of a portion of FIG. 4 at D;
fig. 8 is a schematic view of the structure of the main body nut and the supporting mechanism.
In the figure: 1. a main body lever; 11. a body nut; 111. a main body gear; 12. a main body motor; 13. A main body supporting seat; 131. a support plate; 132. a support platform; 14. a control main board; 15. a display screen; 2. a measuring rod; 21. measuring a lead screw; 211. a limiting step; 212. a plug; 3. an extension rod; 31. an extension lead screw; 311. a transmission gear; 312. an extension nut; 4. a measuring rotating assembly; 41. a support bearing; 42. a bearing bracket; 5. a support mechanism; 51. a support; 511. a limiting plate; 52. a sliding assembly; 521. a chute; 522. a ball bearing; 6. a positioning assembly; 61. positioning the chute; 62. positioning the sliding block; 7. a laser range finder; 8. a measurer; 81. measuring the liquid; 82. measuring scales; 83. a transparent window.
Detailed Description
The present invention will be further described with reference to the following examples and accompanying drawings.
Example 1
The device for measuring the slope and the perpendicularity of the embodiment is shown in figures 1-8.
The device of measurement slope and straightness that hangs down of this embodiment, including the hollow telescopic link that 4 sections left right directions extend, the telescopic link from a left side to the right side taper, and the length of every telescopic link is 1m, and the whole shrink is got up about 1m, conveniently accomodates and transports, also need not occupy great measuring space when measuring. The telescopic link of left end is main part pole 1, and the telescopic link of right-hand member is measuring stick 2, and two sections telescopic links in the middle of the measuring stick are extension rod 3. In other embodiments, the number of hollow telescoping rods may be 3 or 5.
Be provided with extension lead screw 31 in the extension rod 3, main part pole 1 internal fixation is provided with and extends lead screw 31 complex main part nut 11, is provided with in the main part pole 1 to be used for driving main part nut 11 pivoted main part motor 12, extends lead screw 31 and main part nut 11 cooperation so that extension lead screw 31 drives extension rod 3 at the rotation in-process and stretches out and draws back in main part pole 1. The body nut 11 is externally provided with a body gear 111, a transmission rod of the body motor 12 is connected with a motor gear, and the body motor 12 and the body nut 11 are in transmission connection through the motor gear and the body gear. The main body support base 13 is provided in the main body lever 1, the main body support base 13 includes a support plate 131 extending in the vertical direction and a support platform 132 extending in the horizontal direction, and the main body nut 11 and the main body motor 12 are both mounted on the support platform 132.
The right end of the extension screw rod 31 is sleeved with a transmission gear 311 which rotates along with the rotation of the extension screw rod 31, the right end of the extension screw rod 31 is also fixedly provided with an extension nut 312, and an extension nut gear which is meshed with the transmission gear 311 is arranged outside the extension nut 312 so as to enable the extension nut to rotate and move along with the transmission gear. The transmission gear 311 is sleeved on the extension screw 31, and rotates and translates along with the extension screw in the process of rotating and translating the extension screw, and the rotation of the transmission gear drives the extension nut to rotate through the meshing between the transmission gear and the extension nut gear, so that the rotating power is transmitted to the extension nut. The transmission gear also drives the extension nut to translate.
The inside measuring screw 21 that is provided with of measuring stick 2, on measuring screw 21 worn to locate the extension nut 312 in the extension rod 3 adjacent with measuring stick 2, measuring screw 21's right-hand member rotated through measuring rotating assembly 4 and is fixed in the measuring stick inner wall, and measuring screw 21 drives measuring stick 2 along the extension rod is flexible under the rotation of extending nut 312. The measuring rotating component 4 comprises a supporting bearing 41 sleeved on the measuring lead screw 21 and a bearing bracket 42 used for fixing the supporting bearing on the inner wall of the measuring rod, the supporting bearing 41 is sleeved on the measuring lead screw 21, a limiting step 211 used for limiting the supporting bearing to slide in a translation manner relative to the measuring lead screw is arranged on the left side of the supporting bearing on the measuring lead screw 21, an end cap 212 is arranged on the right side of the supporting bearing on the measuring lead screw 21 and used for preventing the supporting bearing from slipping, the measuring lead screw can rotate in the supporting bearing 41 but can not translate relative to the measuring lead screw, meanwhile, the supporting bearing is fixed on the inner wall of the measuring rod 2 through the bearing bracket 42, and the measuring lead screw 21 rotates along with the extending nut 312 to drive the measuring rod to move.
The main body nut 11 and the extension nut 312 are supported and fixed by a support mechanism 5, and the support mechanism 5 comprises a bracket 51 and a sliding assembly 52 matched with the bracket 51. The sliding assembly 52 includes a sliding slot 521 disposed on the main body nut or the extension nut and a ball 522 rolling in the sliding slot, the sliding slot 521 is disposed on both left and right sides of the main body nut 11 and the extension nut 312, and the sliding slot 521 is an annular sliding slot concentric with the main body nut or the extension nut. The bracket 51 includes two connecting rods fixedly connected to the balls 522 in the sliding grooves on both sides, respectively. The bracket 51 is provided with a limiting plate 511 for limiting the position of the main body nut or the extending nut, the limiting plate is blocked between the main body nut and the motor gear to prevent the main body nut and the motor gear from sliding relatively in the rotating process, and the limiting plate is blocked between the extending nut and the transmission gear to prevent the extending nut and the transmission gear from sliding relatively in the rotating process.
The bracket 51 is fixed on the inner wall of the main rod 1 or the extension rod 3, and the extending rod and the shell of the measuring rod are provided with avoidance grooves (not shown in the figure) for avoiding the bracket on the main rod. Because of the support is fixed on the inner wall of main part pole or extension rod, extension rod and measuring stick are at flexible in-process, through the support position, set up and dodge the groove and can make extension rod and measuring stick realize flexible smoothly, in this embodiment, dodge groove department can set up brush (not shown in the figure) in order to prevent that the dust from getting into extension rod or measuring stick, in other embodiments, dodge groove department and also can set up other flexible dustproof construction.
Be provided with locating component 6 between two adjacent telescopic links, locating component 6 is including the location spout 61 and the location slider 62 of mutually supporting to prevent that two adjacent telescopic links from rotating at will at the in-process of relative slip. The location spout is rectangular shape groove, and the location spout extends along the flexible direction of telescopic link, because of being hollow in the telescopic link, and is provided with a plurality of spare parts, when the telescopic link relative slip, need avoid as far as possible to have the rotation each other, and can smooth relative slip between the adjacent telescopic link.
The laser range finder 7 that is used for measuring perpendicular to measuring stick direction distance is installed to the right-hand member of measuring stick 2, and laser range finder 7 can record the distance H of measuring stick distance foundation ditch bottom. Laser range finder 7 is prior art, installs it at the measuring stick right-hand member, and laser range finder 7 all can measure daytime and evening, and measurement accuracy is higher, and the adaptability is stronger. A control main board 14 is arranged in the main body rod 1 and is in communication connection with the laser range finder to control the range finder to measure. In this embodiment, control mainboard and laser range finder pass through line connection, and laser range finder's control switch and control mainboard are connected, and laser range finder's control switch sets up on the outer wall of main part pole. In other embodiments, the laser range finder may also be in communication connection with the control motherboard in a wireless manner, such as installing a wireless communication module on the laser range finder and the control motherboard. The connection mode and the control mode of the control mainboard and the laser range finder are the prior art.
The control main board is in communication connection with the main motor so as to calculate the moving distance A of the laser range finder on the measuring rod in the left-right direction through the rotation of the main motor. The control switch of the main body motor is arranged on the main body rod so as to be convenient to operate. The number of turns of the transmission main body gear can be calculated according to the number of turns of the main body motor, so that the number of turns of the main body nut can be calculated, and the distance of the extension lead screw in translation matched with the main body nut can be calculated according to the number of turns of the main body nut. The number of turns of the transmission gear is the same as that of the extension screw rod, the number of turns of the extension nut gear matched with the transmission gear can be calculated according to the number of turns of the transmission gear, so that the translation distance of the extension screw rod or the measurement screw rod matched with the extension nut gear is obtained through calculation, the distance of the laser range finder moving on the measurement rod is the sum of the translation distances of the two extension rods and the measurement rod, the translation distance of the laser range finder can be calculated, and the related calculation methods are the prior art.
The slope of foundation ditch is i, i = H/A. Be provided with the display screen 15 that is used for showing the data that the control mainboard measured on the outer wall of main part pole 1, the display screen can show the vertical direction's that laser range finder measured data H, main part motor drive laser range finder remove the horizontal direction's distance A and calculate the slope i that obtains.
In the in-process at the actual measurement foundation ditch slope, because of some foundation ditches are darker, the bottom on difficult definite foundation ditch slope, use laser range finder and telescopic link complex structure, it is comparatively convenient to measure, at the in-process that the telescopic link extends, can repetitious usage laser range finder survey the ascending distance in vertical side, the ascending distance crescent of vertical side, explain not arrive the foundation ditch sloping bottom, if the ascending distance in vertical side diminishes or has the fluctuation, then explain that laser range finder is located the foundation ditch sloping bottom directly over, furthermore, a plurality of slope values of survey can take the mean value, can improve measurement accuracy.
The main body rod 1 is provided with a measurer 8 for measuring levelness and verticality simultaneously. The measurer comprises a spherical measuring container, measuring liquid 81 is filled in the spherical measuring container, measuring scales 82 are arranged on the measuring container, and levelness or verticality is judged according to the corresponding measuring scales of the measuring liquid 81 in the measuring container. The spherical measuring vessel is provided with a transparent window 83 for viewing the measuring scale to which the liquid is directed. When measuring the levelness, the telescopic rod is laid flat, and whether the measuring liquid is on the horizontal scale mark or not is observed. When the verticality is measured, the telescopic rod is leaned on the measuring surface, and the measuring scale pointed by the measuring liquid is observed to judge the verticality.
Example 2
The device for measuring gradient and perpendicularity described in this embodiment has a general structure in accordance with embodiment 1, but differs from embodiment 1 in that: the distance measuring device comprises a measuring line and a line weight, the measuring line is fixed at the right end of the measuring rod through a winding roll, a winding roll motor used for driving the winding roll to rotate is connected onto the winding roll, a control switch of the winding roll motor is arranged on the main body rod, and a control mainboard is in communication connection with the winding roll.
Finally, it should be noted that: in the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The above embodiments are only for illustrating the technical solutions of the present invention and are not limited, and other modifications or equivalent substitutions made by the technical solutions of the present invention by the ordinary skilled person in the art are included in the scope of the claims of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. The device for measuring the gradient and the verticality is characterized by comprising a plurality of sections of hollow telescopic rods extending in the left-right direction, wherein the telescopic rods gradually become thinner from left to right, the telescopic rod at the left end is a main rod, the telescopic rod at the right end is a measuring rod, and the telescopic rod in the middle is an extension rod;
an extension lead screw is arranged in the extension rod, a main body nut matched with the extension lead screw is fixedly arranged in the main body rod, a main body motor used for driving the main body nut to rotate is arranged in the main body rod, and the extension lead screw is matched with the main body nut so that the extension lead screw drives the extension rod to stretch and retract in the main body rod in the rotating process;
the right end of the extension screw rod is sleeved with a transmission gear which rotates along with the rotation of the extension screw rod, the right end of the extension screw rod is also fixedly provided with an extension nut, and an extension nut gear which is meshed with the transmission gear is arranged outside the extension nut, so that the extension nut rotates and moves along with the transmission gear;
the measuring device comprises a measuring rod, a measuring rotating assembly, a measuring nut, a measuring screw rod, a measuring rotating assembly and a measuring rotating assembly, wherein the measuring screw rod is arranged in the measuring rod and penetrates through the extending nut in the extending rod adjacent to the measuring rod;
a distance meter for measuring the distance perpendicular to the direction of the measuring rod is arranged at the right end of the measuring rod;
the main body rod is internally provided with a control main board which is in communication connection with the main body motor so as to calculate the moving distance of the range finder in the left-right direction on the measuring rod through the rotation of the main body motor, and the control main board is in communication connection with the range finder so as to control the range finder to measure;
the main body rod is provided with a measurer for measuring levelness and verticality simultaneously.
2. The device for measuring the slope and the perpendicularity according to claim 1, wherein the main body nut and the extension nut are supported and fixed through a supporting mechanism, and the supporting mechanism comprises a support and a sliding assembly matched with the support; the sliding assembly comprises a sliding chute arranged on the main body nut or the extension nut and a ball rolling in the sliding chute, the sliding chutes are arranged on the left side surface and the right side surface of the main body nut and the extension nut, and the sliding chutes are annular sliding chutes concentric with the main body nut or the extension nut; the support includes two connecting rods that are respectively and fixedly connected with the balls in the chutes on both sides.
3. The device for measuring the slope and the perpendicularity according to claim 2, wherein the support is fixed on the inner wall of the main body rod or the extension rod, and avoidance grooves for avoiding the support on the main body rod are formed in the extension rod and the shell of the measuring rod.
4. The device for measuring the slope and the perpendicularity according to claim 1, wherein a positioning sliding groove and a positioning sliding block which are matched with each other are arranged between every two adjacent telescopic rods so as to prevent the two adjacent telescopic rods from rotating randomly in the relative sliding process.
5. The device for measuring the slope and the verticality according to claim 1, wherein the measuring rotating assembly comprises a supporting bearing sleeved on the measuring screw rod and a bearing frame used for fixing the supporting bearing on the inner wall of the measuring rod, a limiting step used for limiting the supporting bearing to slide in a translation mode relative to the measuring screw rod is arranged on the measuring screw rod, and the supporting bearing enables the measuring screw rod to rotate along with the extending nut to drive the measuring rod to move.
6. The apparatus according to claim 1, wherein the main body support seat is provided in the main body rod, the main body support seat comprises a support plate extending in an up-down direction and a support platform extending in a left-right direction, and the main body nut and the main body motor are mounted on the support platform.
7. The device for measuring the slope and the perpendicularity according to claim 1, wherein a main gear is arranged outside the main nut, a motor gear is connected to a transmission rod of a main motor, and the main motor and the main nut are in transmission connection through the motor gear and the main gear.
8. A device for measuring grade and squareness according to claim 1 characterised in that the rangefinder is a laser rangefinder.
9. The apparatus for measuring slope and verticality according to claim 1, wherein the distance measuring device comprises a measuring line and a line weight, the measuring line is fixed at the right end of the measuring rod through a winding roll, a winding roll motor for driving the winding roll to rotate is connected to the winding roll, a control switch of the winding roll motor is arranged on the main rod, and a control main board is in communication connection with the winding roll.
10. The apparatus for measuring a slope and a verticality according to claim 1, wherein the measurer comprises a spherical measuring container, the spherical measuring container is filled with measuring liquid, the spherical measuring container is provided with a transparent window for observing measuring scales pointed by the measuring liquid, and the levelness or the verticality is judged by the corresponding measuring scales of the measuring liquid in the measuring container.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122271323.2U CN215810827U (en) | 2021-09-18 | 2021-09-18 | Device for measuring gradient and verticality |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122271323.2U CN215810827U (en) | 2021-09-18 | 2021-09-18 | Device for measuring gradient and verticality |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113654524A (en) * | 2021-09-18 | 2021-11-16 | 中国建筑第五工程局有限公司 | Device for measuring gradient and verticality |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113654524A (en) * | 2021-09-18 | 2021-11-16 | 中国建筑第五工程局有限公司 | Device for measuring gradient and verticality |
| CN113654524B (en) * | 2021-09-18 | 2024-12-13 | 中国建筑第五工程局有限公司 | Device for measuring slope and verticality |
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