CN110645930A - Accurate distance measuring device for building construction - Google Patents
Accurate distance measuring device for building construction Download PDFInfo
- Publication number
- CN110645930A CN110645930A CN201910789531.6A CN201910789531A CN110645930A CN 110645930 A CN110645930 A CN 110645930A CN 201910789531 A CN201910789531 A CN 201910789531A CN 110645930 A CN110645930 A CN 110645930A
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- shell
- conical disc
- housing
- pull rope
- measuring device
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
Abstract
The invention relates to a distance accurate measuring device for building construction, which aims to solve the problems of inconvenient operation and inaccurate data precision and adopts the technical scheme that: the device comprises a shell, a wire wheel and a pull rope, wherein a lead screw is arranged on the shell, a shaft sleeve is screwed on the lead screw, the shaft sleeve is axially and slidably connected with the shell, a conical disc which coaxially rotates is arranged on the shaft sleeve, a plurality of elastic slide bars which are circumferentially distributed along the axis of the conical disc are arranged on the shell, and the end parts of the slide bars are in extrusion contact with the conical surface of the conical disc; one end of the pull rope is connected with the wire wheel, and the other end of the pull rope bypasses the conical disc and extends out of the shell through the space between the conical surface of the conical disc and the sliding rod; the shell is provided with a connecting rod and a sliding block which horizontally slides, one end of the connecting rod is hinged with the shell along the axis of the conical disc, and the other end of the connecting rod is vertically hinged with the sliding block in a sliding manner; a rack horizontally arranged on the sliding block, a gear coaxially connected with the lead screw is arranged on the shell, and the rack is in transmission connection with the gear; the shell is provided with a counter which is in transmission connection with the conical disc.
Description
Technical Field
The invention relates to a building construction measuring device, in particular to a distance accurate measuring device for building construction.
Background
In the building construction and acceptance process, the dimension measurement needs to be carried out on buildings such as construction sites or walls, and the like, so as to ensure the specification of the construction process and the accuracy of the dimension of the buildings, however, most of the existing measurement adopts conventional tools such as tape measures, and in the actual operation process, the levelness or the verticality of a graduated scale during measurement is difficult to ensure, and the distance between two points with fixed angles cannot be measured visually, so that the obtained data has large error, the height of a measuring point and the angle between the measuring points need to be determined in advance, the requirement on the measurement operation is high, the steps are complicated, the error range is reduced by carrying out multiple measurements, time and labor are wasted, and the data accuracy is difficult to ensure.
Disclosure of Invention
In order to overcome the technical defects in the prior art, the invention provides a distance accurate measuring device for building construction, which aims to solve the problems of complicated and inconvenient operation and difficulty in ensuring data accuracy in the conventional measuring operation.
The technical scheme for solving the problem is as follows: the device comprises a shell, a wire wheel and a pull rope, wherein a lead screw is arranged on the shell, a shaft sleeve is screwed on the lead screw and is axially and slidably connected with the shell, a conical disc which coaxially rotates with the shaft sleeve is arranged on the shaft sleeve, a plurality of slide bars are distributed on the shell along the circumference of the axis of the conical disc, one end of each slide bar is elastically and slidably connected with the shell, and the other end of each slide bar is in extrusion contact with the conical surface of the conical disc; one end of the pull rope is connected with the wire wheel, the other end of the pull rope bypasses the conical disc through the conical surface of the conical disc and the sliding rod and extends out of the shell, and a limiting groove matched with the pull rope is formed in the shell; the shell is provided with a connecting rod and a sliding block which horizontally slides, one end of the connecting rod is hinged with the shell along the axis of the conical disc, and the other end of the connecting rod is vertically hinged with the sliding block in a sliding manner; the sliding block is provided with a rack which is horizontally arranged, the shell is provided with a gear which is coaxially connected with the lead screw, and the rack is in transmission connection with the gear; the shell is provided with a counter in transmission connection with the conical disc; the rope pulley is driven by the pull rope to drive the conical disc to rotate, so that the counter generates a reading, the conical disc is driven to axially move by the rotation of the lead screw, the pull rope and the conical disc generate axial relative displacement to realize speed change, and the reading generated by the counter is the same as the horizontal distance between actual measurement points.
The invention can obtain the required data only by pulling out or retracting the pull rope at a stable angle and straightness, reduces unnecessary operation steps, improves the measurement precision, and the measured data are correlated with each other to be more convenient for verifying the result so as to find and eliminate errors in time; the invention does not need to rely on energy sources such as electric power and the like, and is widely suitable for various construction environments and use scenes.
Drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is a left side view of the present invention.
Fig. 3 is a top view of the present invention.
Fig. 4 is a cross-sectional view a-a of the present invention.
Fig. 5 is a cross-sectional view B-B of the present invention.
Fig. 6 is a cross-sectional view taken along line C-C of fig. 2 in accordance with the present invention.
Fig. 7 is a cross-sectional view taken along line D-D of fig. 2 in accordance with the present invention.
Fig. 8 is an axial cross-sectional view of the present invention.
Fig. 9 is a perspective cross-sectional view of the present invention.
FIG. 10 is a parameter calculation analysis diagram according to the present invention.
FIG. 11 is a graph of the cone generatrix of a conical disk.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 10, the present invention includes a housing 1, a reel 2 disposed inside the housing 1 and rotating along a front-rear axis is disposed on the housing 1, and a pull rope 3 is wound on the reel 2; the shell 1 is provided with a lead screw 4 which is arranged on the inner side of the shell 1 and rotates along a front-back arranged axis, the lead screw 4 is coaxially connected with a shaft sleeve 5 through lead screw threads, the shaft sleeve 5 is in sliding connection with the shell 1 along the axis direction of the lead screw 4, the shaft sleeve 5 is provided with a conical disc 6 which rotates coaxially with the shaft sleeve 5, a conical surface bus of the conical disc 6 is a curve, the shell 1 is provided with a plurality of slide bars 7 which radially slide along the axis of the conical disc 6 and are uniformly distributed on the circumference, one end of each slide bar 7 is elastically and slidably connected with the shell 1, the other end of each slide bar 7 is in extrusion contact with the conical surface of the conical disc 6, and when the conical disc 6 axially moves, the slide bars 7 generate centrifugal or centripetal sliding under the combined action of the jacking force and the elastic force of the conical surface, so that the axial movement of the conical disc 6 is not; one end of the pull rope 3 is connected with the wire wheel 2, the other end of the pull rope 3 bypasses the conical disc 6 between the conical surface of the conical disc 6 and the sliding rod 7 and extends out of the shell 1, a limiting groove 8 matched with the pull rope 3 is formed in the shell 1 to avoid the axial deviation of the pull rope 3 on the conical disc 6 caused by the overlarge moving range of the pull rope 3, and under the clamping action of the conical surface and the sliding rod 7 and the limiting action of the limiting groove 8, the pull rope 3 tightly winds the conical disc 6 and cannot slide in an axial dislocation manner; the shell 1 is provided with a connecting rod 9 and a sliding block 10 which are horizontally arranged, one end of the connecting rod 9 is hinged with the shell 1 along the axis of the conical disc 6, and the other end of the connecting rod 9 is vertically hinged with the sliding block 10 in a sliding manner: a vertical straight groove 11 is arranged on the sliding block 10, a sliding shaft 12 matched with the straight groove 11 is arranged at the other end of the connecting rod 9, and the sliding shaft 12 is vertically arranged in the straight groove 11 in a sliding manner; a rack 13 horizontally arranged on the sliding block 10, a gear 14 coaxially connected with the lead screw 4 is arranged on the shell 1, and the rack 13 is in transmission connection with the gear 14; the shell 1 is provided with a mechanical counter 15 in transmission connection with the conical disc 6, and the shell 1 is provided with a window corresponding to the counter 15; the curve equation of the conical surface generatrix of the conical disc 6 is as follows: Δ r =
In the formula (I), wherein,the fixed value R is the minimum pitch circle radius of the pull rope 3 tightly wound on the conical disc 6 in the above connection mode, the fixed value R is the rotation radius of the connecting rod 9, the independent variable Δ R is the horizontal displacement generated by driving the sliding block 10 when the connecting rod 9 rotates, and the variable Δ R is the variable generated by the pitch circle radius of the pull rope 3 due to the axial relative sliding between the conical surface and the pull rope 3 when the conical disc 6 axially displaces, and with reference to fig. 10, the derivation process of the curve equation is as follows:
because the rotating speed and the radius are inversely proportional under the same linear speed, the ratio of the rotating speed after the conical disc 6 moves axially to the rotating speed before the conical disc 6 moves is equal to the ratio of the initial rotating radius of the pull rope 3 before the conical disc 6 moves, namely the ratio of the initial pitch radius r of the pull rope 3 when the connecting rod 9 is horizontal to the pitch radius (r + delta r) of the pull rope 3 after the connecting rod 9 rotates to enable the conical disc 6 to generate axial displacement, namely the transmission ratio of the conical disc 6 after the conical disc 6 moves to the conical disc before the conical disc moves isI.e. the counter 15 displays the value of the actual length of rotation of the pull cord 3
(ii) a Therefore, when the value of the counter 15 is used to indicate the distance in the horizontal direction corresponding to the moving length of the rope 3, the ratio should be equal to the rate of change cos (α) (α is the angle between the link 9 and the horizontal plane) of the horizontal distance between the slider 10 and the rotation axis of the link 9 after the slider 10 moves, and cos (α) = is the distance in the horizontal directionAnd then:
In the invention, since the delta R and the delta R are not directly related but are in transmission connection by means of a gear rack mechanism and a lead screw mechanism,therefore, the axial displacement of the conical disc 6, i.e., the transmission distance H of the screw 4, needs to be converted into an independent variable Δ R, i.e., H = Δ R, where: the moving distance of the rack 13 is L, the arc length of the reference circle of the gear 14 is Δ S, the diameter of the reference circle of the gear 14 is D, the pitch of the lead screw 4 is P, the number of turns of the lead screw 4, that is, the number of turns of the gear 14, is n, and the transmission distance of the lead screw 4 is H = n · P; since the rack 13 and the gear 14, whether in direct engagement transmission or in conventional rotary motion transmission mechanisms such as gear pairs, belt pairs, chain pairs, etc., satisfy the relationship of equal linear speeds of transmission, L = Δ R, Δ S = L, Δ S = Δ R, and since H = Δ R and n =
Then, the pitch of the screw rod 4 should satisfy the following relationship: p =
。
The pitch P of the spindle 4 is thus determined as a function of the pitch circle diameter of the gear wheel 14 and it is ensured that the conical generatrix of the conical disk 6 satisfies the curve equation Δ r =
Namely, when the sliding block 10 generates the sliding displacement Δ R, the rotation radius of the pull rope 3 generates the corresponding increment Δ R, so that the counter 15 can always accurately measure the horizontal distance between two actual measurement points of the pull rope 3 when the pull rope 3 is pulled out or retracted at different angles.
Preferably, the sliding rod 7 is connected with the housing 1 through an elastic telescopic rod 16: one end of the elastic expansion piece 16 is hinged with the sliding rod 7, the other end of the elastic expansion piece 16 is hinged with the shell 1, and the sliding rod 7 centripetally slides under the action of elastic tension of the elastic expansion piece 16.
Preferably, the sliding rod 7 is connected with the housing 1 through a spring, and the sliding rod 7 centripetally slides under the elastic force of the spring.
Preferably, the sliding rod 7 is hinged with the housing 1 through a telescopic member: one end of the telescopic piece is hinged with the sliding rod 7, the other end of the telescopic piece is elastically hinged with the shell 1, the telescopic piece rotates under the action of hinged elasticity and pulls the sliding rod 7 to slide centripetally, and meanwhile, the telescopic piece generates telescopic motion to match the distance change generated between the two hinged ends of the telescopic piece after the sliding rod 7 slides.
Preferably, the housing 1 is provided with a large gear 17, and the rack 13 and the gear 14 are in transmission connection through the large gear 17, that is, the large gear 17 is meshed with the rack 13 and the gear 14 simultaneously.
Preferably, the housing 1 is provided with a guide slider 18 which is arranged in the limit groove 8 and slides vertically, the guide slider 18 is provided with a rope outlet 19 which horizontally penetrates through the guide slider 18, and the other end of the pull rope 3 passes through the tapered disc 6 and then penetrates out of the housing 1 through the rope outlet 19.
Preferably, the housing 1 is provided with at least one front fixed pulley 20 and at least one rear fixed pulley 21 which are arranged inside the housing 1, the other end of the pull rope 3 sequentially passes through the front fixed pulley 20, the tapered disc 6 and the rear fixed pulley 21 and penetrates out of the housing 1, the front fixed pulley 20 enables the pull rope 3 to be wound and tightened, and the pull rope 3 has a large enough wrap angle on the tapered disc 6, so that sufficient friction force is provided between the pull rope 3 and the tapered disc 6 to drive the tapered disc 6 to reliably rotate, the slip probability is effectively reduced, and the measurement accuracy is guaranteed; the rear fixed pulley 21 makes the stay cord 3 always deflect along the axis of the last rear fixed pulley 21 when measuring at different angles to ensure more accuracy and convenience in angle measurement or alignment.
Preferably, the housing 1 is provided with a guide sliding block 18 which is arranged in the limiting groove 8 and slides along the circumference of the axis of the last rear fixed pulley 21 around which the pull rope 3 passes, the guide sliding block 18 is provided with a rope outlet 19 which radially penetrates through the guide sliding block 18 along the axis of the last rear fixed pulley 21, one end of the guide sliding block 18 is arranged outside the housing 1 and is provided with a positioning pointer 22 aligned with the axis of the rope outlet 19, and the other end of the pull rope 3 passes through the last rear fixed pulley 21 and then passes out of the housing 1 through the rope outlet 19; the shell 1 is provided with a pointer 23 which is coaxially arranged with the last rear fixed pulley 21 and an angle dial 24 which corresponds to the pointer 23, the pointer 23 is connected with the guide sliding block 18 to enable the pointer 23 and the guide sliding block to synchronously rotate, and the direction of the pointer 23 is kept parallel to the pull rope 3 which stretches between the last rear fixed pulley 21 and the guide sliding block 18; the pointer 23 is connected with the connecting rod 9 through a parallelogram connecting rod mechanism 25 to enable the pointer 23 and the connecting rod 9 to rotate in parallel, and the rotation angle of the connecting rod 9 is consistent with the scale pointed by the pointer 23; the guide sliding block 18 is provided with a positioning screw 26 arranged outside the shell 1, and the guide sliding block 18 is locked and positioned on the shell 1 by using the positioning screw 26, so that the pull rope 3 can be pulled out or retracted at a stable preset angle, and the influence on the measurement result caused by the angular deviation generated in the pulling-out or retracting process is avoided.
Preferably, the housing 1 is provided with a level 27, and the measuring device is horizontally positioned by the level 27 by taking the length direction of the connecting rod 9 as the horizontal reference of the level 27 when the connecting rod 9 is perpendicular to the sliding block 10, so that the measuring accuracy can be ensured.
Preferably, the housing 1 is provided with a coil spring 28 coaxially connected to the pulley 2, both ends of the coil spring 28 are connected to the housing 1 and the pulley 2, respectively, and the pulley 2 is automatically rotated by the elastic force of the coil spring 28 to retract the rope 3.
Preferably, the conical disk 6 and the counter 15 are in transmission connection through a gear pair 29, and the transmission ratio of the gear pair 29 is set according to the initial pitch circle radius of the pull rope 3 on the conical disk 6 when the connecting rod 9 is horizontal, so that when the conical disk 6 rotates for one circle in the state, the value measured by the counter 15 is equal to the circumference corresponding to the initial pitch circle radius, and the measured data are accurate.
Preferably, the end of the pull rope 3 disposed outside the housing 1 has a pull ring to facilitate the pulling operation of the pull rope 3.
When the invention is used, the level ruler 27 is in a horizontal state and fixes the shell 1, the pull rope 3 is pulled out or retracted at a stable angle and kept straight, the guide slide block 18 generates circumferential sliding, the angle of the connecting rod 9 is adjusted to be parallel to the pull rope 3, the slide block 10 generates horizontal displacement by being pulled by the connecting rod 9, and the lead screw is driven by the gear rack mechanism to rotate, so that the conical disc 6 generates corresponding displacement to change the pitch circle radius of the pull rope 3 on the conical disc 6; since the pulling-out or retracting speed of the pulling rope 3 cannot be changed by axially displacing the conical disc 6 or not, namely the linear speed is not changed, the pitch circle radius of the pulling rope 3 is changed as follows: after the rotation speed of the conical disc 6 is increased, the rotation speed of the counter 15 is correspondingly reduced, the displayed numerical value is reduced, and when the conical generatrix of the conical disc 6 meets the curve equation and the thread pitch of the lead screw 4 meets the conditions, the numerical value displayed by the counter 15 is the cosine length corresponding to the included angle between the pull rope 3 and the horizontal plane, namely the horizontal distance between the actual measuring points.
In the measurement process, the angle of stay cord 3 can be read at any time through pointer 23 and calibrated scale 24, and in order to further increase the measuring accuracy, can install the actual measurement counter with arbitrary leading fixed pulley 20 or arbitrary rear fixed pulley 21 coaxial coupling on casing 1 for show the actual measurement length of stay cord 3, combine the angle value of stay cord 3 and the horizontal distance that counter 15 shows, can carry out the later stage verification to the measuring result, thereby make the measuring result clear accurate, data accuracy and credibility are higher.
Since the conventional counters 15 are all provided with the zero clearing button, when the measurement is finished, the counter 15 is cleared to carry out the measurement again.
The pull rope measuring device is exquisite in structure and convenient and fast to operate, required data can be obtained only by pulling out or retracting the pull rope at a stable angle and flatness during measurement, compared with the existing measuring mode, unnecessary operation steps are reduced, the measuring precision is improved, the measured data are correlated with each other, the result is more convenient to verify, errors can be found and corrected in time, and construction accidents and potential safety hazards caused by the errors are avoided; the method and the device are combined with the embodiment provided by the specification to carry out comprehensive setting, so that more convenient and more accurate measurement experience can be achieved, the method and the device do not depend on energy sources such as electric power and the like, and the method and the device are widely applied to various construction environments and use scenes.
Claims (10)
1. The accurate distance measuring device for building construction comprises a shell (1), wherein a wire wheel (2) is arranged on the shell (1), and a pull rope (3) is wound on the wire wheel (2), and is characterized in that a lead screw (4) is arranged on the shell (1), a shaft sleeve (5) is screwed on the lead screw (4), the shaft sleeve (5) is axially and slidably connected with the shell (1), a conical disc (6) coaxially rotating with the shaft sleeve (5) is arranged on the shaft sleeve (5), a plurality of slide bars (7) are circumferentially distributed on the shell (1) along the axis of the conical disc (6), one end of each slide bar (7) is elastically and slidably connected with the shell (1), and the other end of each slide bar (7) is in extrusion contact with the conical surface of the conical disc (6); one end of the pull rope (3) is connected with the wire wheel (2), the other end of the pull rope (3) bypasses the conical disc (6) through the conical surface of the conical disc (6) and the sliding rod (7) and extends out of the shell (1), and a limiting groove (8) matched with the pull rope (3) is formed in the shell (1); a connecting rod (9) and a sliding block (10) which horizontally slides are arranged on the shell (1), one end of the connecting rod (9) is hinged with the shell (1) along the axis of the conical disc (6), and the other end of the connecting rod (9) is vertically hinged with the sliding block (10) in a sliding manner; a rack (13) horizontally arranged on the sliding block (10), a gear (14) coaxially connected with the lead screw (4) is arranged on the shell (1), and the rack (13) is in transmission connection with the gear (14); the shell (1) is provided with a counter (15) which is in transmission connection with the conical disc (6).
2. The accurate distance measuring device for building construction according to claim 1, characterized in that the slide bar (7) is connected with the housing (1) via an elastic telescopic rod (16).
3. The accurate distance measuring device for building construction according to claim 1, wherein the slide rod (7) is connected with the housing (1) through a spring.
4. The accurate distance measuring device for building construction according to claim 1, characterized in that the slide bar (7) is hinged with the housing (1) via a telescopic member: one end of the telescopic piece is hinged with the sliding rod (7), and the other end of the telescopic piece is elastically hinged with the shell (1).
5. The accurate distance measuring device for building construction as claimed in claim 1, wherein the housing (1) is provided with a large gear (17), and the rack (13) and the gear (14) are in transmission connection through the large gear (17).
6. The accurate distance measuring device for building construction according to claim 1, characterized in that a guide slider (18) which is arranged in the limiting groove (8) and slides vertically is arranged on the shell (1), a rope outlet hole (19) which horizontally penetrates through the guide slider (18) is arranged on the guide slider (18), and the pull rope (3) bypasses the conical disc (6) and then penetrates out of the shell (1) through the rope outlet hole (19).
7. The accurate distance measuring device for building construction according to claim 1 is characterized in that the housing (1) is provided with at least one front fixed pulley (20) and at least one rear fixed pulley (21), and the pull rope (3) sequentially passes through the front fixed pulley (20), the conical disc (6) and the rear fixed pulley (21) and penetrates out of the housing (1).
8. The accurate distance measuring device for building construction according to claim 7, characterized in that the housing (1) is provided with a guide slider (18) which is arranged in the limiting groove (8) and slides along the circumference of the axis of the last rear fixed pulley (21) around which the pulling rope (3) passes, the guide slider (18) is provided with a rope outlet hole (19) which radially penetrates through the guide slider (18) along the axis of the last rear fixed pulley (21), one end of the guide slider (18) is arranged outside the housing (1) and is provided with a positioning pointer (22) aligned with the axis of the rope outlet hole (19), and the pulling rope (3) passes through the rope outlet hole (19) after passing around the last rear fixed pulley (21) and then penetrates out of the housing (1); the shell (1) is provided with a pointer (23) which is coaxially arranged with the last rear fixed pulley (21) and a dial (24) which corresponds to the pointer (23), and the pointer (23) is connected with the guide sliding block (18) to ensure that the direction of the pointer (23) is parallel to the pull rope (3) which stretches between the last rear fixed pulley (21) and the guide sliding block (18); the pointer (23) is connected with the connecting rod (9) through a parallelogram connecting rod mechanism (25) to enable the pointer (23) and the connecting rod (9) to rotate in parallel; and a positioning screw (26) arranged outside the shell (1) is arranged on the guide sliding block (18).
9. The accurate distance measuring device for building construction according to claim 1 is characterized in that the housing (1) is provided with a level ruler (27).
10. The accurate distance measuring device for building construction as claimed in claim 1, wherein the housing (1) is provided with a coil spring (28) coaxially connected with the reel (2), and two ends of the coil spring (28) are respectively connected with the housing (1) and the reel (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910789531.6A CN110645930B (en) | 2019-08-26 | 2019-08-26 | Accurate distance measuring device for building construction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910789531.6A CN110645930B (en) | 2019-08-26 | 2019-08-26 | Accurate distance measuring device for building construction |
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| CN110645930A true CN110645930A (en) | 2020-01-03 |
| CN110645930B CN110645930B (en) | 2021-02-09 |
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| CN201910789531.6A Active CN110645930B (en) | 2019-08-26 | 2019-08-26 | Accurate distance measuring device for building construction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114234789A (en) * | 2022-02-24 | 2022-03-25 | 四川省林业和草原调查规划院(四川省林业和草原生态环境监测中心) | Tree diameter measuring method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000035303A (en) * | 1998-07-17 | 2000-02-02 | Sumitomo Electric Ind Ltd | Root push stroke meter |
| US20060191153A1 (en) * | 2005-02-25 | 2006-08-31 | Thompson Rocke P | Length measuring method and device |
| CN204902801U (en) * | 2015-05-27 | 2015-12-23 | 徐州凌特自动化工程有限公司 | Stay cord sensor |
| CN205066632U (en) * | 2015-11-05 | 2016-03-02 | 王大勇 | Building works survey chi |
-
2019
- 2019-08-26 CN CN201910789531.6A patent/CN110645930B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000035303A (en) * | 1998-07-17 | 2000-02-02 | Sumitomo Electric Ind Ltd | Root push stroke meter |
| US20060191153A1 (en) * | 2005-02-25 | 2006-08-31 | Thompson Rocke P | Length measuring method and device |
| CN204902801U (en) * | 2015-05-27 | 2015-12-23 | 徐州凌特自动化工程有限公司 | Stay cord sensor |
| CN205066632U (en) * | 2015-11-05 | 2016-03-02 | 王大勇 | Building works survey chi |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114234789A (en) * | 2022-02-24 | 2022-03-25 | 四川省林业和草原调查规划院(四川省林业和草原生态环境监测中心) | Tree diameter measuring method |
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Effective date of registration: 20210108 Address after: Room 2404, building 17, Dongsheng Huayuan, Xiabu village, Dongshan street, Ruian City, Wenzhou City, Zhejiang Province 325000 Applicant after: Gangrui Holding Group Co.,Ltd. Address before: 226600 No. 99, Zhong Ba Nan Road, Haian Town, Haian, Nantong, Jiangsu Applicant before: NANTONG HUAXIN CONSTRUCTION ENGINEERING GROUP Co.,Ltd. Applicant before: NANTONG KEDA BUILDING MATERIALS Co.,Ltd. |
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