CN220380421U - Device for centering construction site - Google Patents
Device for centering construction site Download PDFInfo
- Publication number
- CN220380421U CN220380421U CN202321841023.6U CN202321841023U CN220380421U CN 220380421 U CN220380421 U CN 220380421U CN 202321841023 U CN202321841023 U CN 202321841023U CN 220380421 U CN220380421 U CN 220380421U
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- Prior art keywords
- ruler
- gear
- measuring ruler
- measuring
- positioning
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- 238000010276 construction Methods 0.000 title abstract description 6
- 238000013016 damping Methods 0.000 claims abstract description 14
- 238000005259 measurement Methods 0.000 description 14
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 2
- 238000009435 building construction Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Landscapes
- Length-Measuring Instruments Using Mechanical Means (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model relates to a device for centering a construction site, which can quickly and accurately position the center of an object. The utility model comprises a shell, a first caliper, a second caliper, a gear and a knob, wherein the knob is rotatably arranged on the shell through a rotating shaft, the gear is coaxially and fixedly arranged on the rotating shaft, the first caliper comprises a first positioning ruler and a first measuring ruler which are vertically connected, the second caliper comprises a second positioning ruler and a second measuring ruler which are vertically connected, the first measuring ruler and the second measuring ruler are mutually parallel and are respectively arranged on two sides of the gear, the first measuring ruler and the second measuring ruler are both in sliding connection with the shell, the first measuring ruler and the second measuring ruler are both provided with rack structures matched with the gear, the first measuring ruler and the second measuring ruler can be driven to synchronously move through the rotation of the gear, the first positioning ruler and the second positioning ruler are oppositely arranged, and the shell and the knob are provided with center graduation marks; a damping mechanism is arranged in the rotary connecting structure of the knob and the shell.
Description
Technical Field
The utility model relates to a device for centering a construction site, and belongs to the technical field of measuring instruments in building construction.
Background
In building construction, it is often necessary to determine the center position of objects such as exterior walls, columns, circular pipes, etc. In the conventional measurement technology, the center of an object is usually determined manually, and the center point can be determined only by measuring the object once, and the measurement difficulty is high, especially when circular, tubular or batch measurement is complicated and is easy to make mistakes because the measurement position is inaccurate or the actual condition of the spot is not allowed. Furthermore, there may be errors in the measurement results due to inaccuracy of manual measurement. Therefore, there is a need for developing a tool that can quickly and accurately measure the center of an object.
Disclosure of Invention
The technical problems to be solved by the utility model are as follows: provided is a device for centering a construction site, which can quickly and accurately center an object.
The technical scheme adopted by the utility model for solving the technical problems is as follows: the device for centering the construction site comprises a shell, a first caliper, a second caliper, a gear and a knob, wherein the back surface of the knob is provided with a rotating shaft which is fixedly arranged, the gear is rotatably arranged on the shell through the rotating shaft, the gear is coaxially and fixedly arranged on the rotating shaft, the first caliper comprises a first positioning ruler and a first measuring ruler which are vertically connected, the second caliper comprises a second positioning ruler and a second measuring ruler which are vertically connected, the first measuring ruler and the second measuring ruler are mutually parallel and are respectively arranged on two sides of the gear, the first measuring ruler and the second measuring ruler are both in sliding connection with the shell, the first measuring ruler is provided with a first rack matched with the gear, the second measuring ruler is provided with a second rack matched with the gear, the first positioning ruler and the second measuring ruler can be driven to synchronously move through the rotation of the gear, the first positioning ruler and the second positioning ruler are in opposite arrangement, a vertical plane which is set as a first vertical plane by taking the moving direction of the rotating shaft as a reference, a central axis which passes through the rotating shaft and is vertical plane which is perpendicular to the moving direction of the first measuring ruler, the first positioning ruler and the second positioning ruler are arranged in the vertical plane, the first positioning ruler and the first positioning ruler are arranged in the vertical plane where the first positioning ruler and the first positioning ruler are positioned in the vertical plane or the vertical position of the central line is located in the vertical position of the shell, and the vertical position is arranged on the vertical plane or the vertical position where the first positioning is located in the vertical position or the vertical position is located in the vertical position or the vertical plane; a damping mechanism is arranged in the rotary connecting structure of the knob and the shell.
As a further preferable embodiment of the present utility model: the damping mechanism comprises a plurality of tooth-shaped blocks which are uniformly arranged at intervals in the circumferential direction of the gear, one side of each tooth-shaped block is meshed with the gear, one side of each tooth-shaped block, which is away from the gear, is provided with a sliding rod, the sliding rod is in sliding connection with a fixed cylinder on the shell, the moving axis of the sliding rod is arranged along the radial direction of the gear, a cylindrical spring is arranged between the fixed cylinder and each tooth-shaped block, the cylindrical spring is sleeved on the sliding rod, and the tooth-shaped blocks are abutted against the gear through the reset elastic force of the cylindrical spring.
As a further preferable embodiment of the present utility model: the shell is rectangular box body, and the knob is located outside the box body, and in the box body was located to the gear, the direction of movement of first dipperstick and second dipperstick set up along the length direction of box body, and the measurement locating terminal of first location chi and second location chi is for the outside terminal surface protrusion setting of box body.
As a further preferable embodiment of the present utility model: the first measuring ruler and the second measuring ruler are both provided with length measurement scale marks.
The beneficial effects of the utility model are as follows: when the measuring device is used, the first positioning ruler and the second positioning ruler are clamped at two ends of an object to be measured. The gear is driven to rotate through the rotary knob, the first measuring ruler and the second measuring ruler are driven to synchronously move, and then the first positioning ruler and the second positioning ruler can be driven to synchronously open or shrink inwards, so that the first positioning ruler and the second positioning ruler can be tightly attached to two ends of an object to be measured, the accurate positioning of the device is ensured, and the position of the center scale mark is the position of the center of the object. Be provided with damping mechanism in the rotation connection structure of knob and shell, when utilizing the knob to rotate the gear, need overcome damping mechanism and applyed resistance, damping mechanism can avoid first slide caliper rule, second slide caliper rule to rock at will, ensures that first location chi and second location chi can closely laminate all the time and be in the object both ends that need measure, ensures that the device location is accurate. The utility model has simple design and convenient use, and can improve the efficiency for batch measurement.
Drawings
Fig. 1 is an isometric view of the overall structure of the present utility model.
Fig. 2 is an isometric view of the internal structure of the present utility model.
Fig. 3 is a top view of the internal structure of the present utility model.
Fig. 4 is an enlarged view of a portion of the damping mechanism of fig. 3.
Fig. 5 is an isometric view of the utility model as applied to measuring prefabricated columns.
Fig. 6 is an isometric view of the utility model as applied to measuring an exterior wall.
Fig. 7 is an isometric view of the utility model as applied to measuring circular pipes.
Part numbers in the figures: the measuring device comprises a shell, a first caliper, a second caliper, a 4-tooth-shaped block, a 5-sliding rod, a 6-gear, a 7-knob, an 8-fixed cylinder, a 9-cylindrical spring, a first positioning ruler, a first measuring ruler, a second positioning ruler and a second measuring ruler, wherein the first measuring ruler, the second measuring ruler and the second measuring ruler are arranged in sequence.
Detailed Description
The utility model will be further described with reference to the accompanying drawings and examples.
As shown in fig. 1 to 4, the utility model comprises a housing 1, a first caliper 2, a second caliper 3, a gear 6 and a knob 7, wherein the back surface of the knob 7 is provided with a rotating shaft which is fixedly arranged, and is rotatably arranged on the housing 1 through the rotating shaft (referring to a conventional rotating connection mode, a rotating support or a shaft sleeve which is matched with the rotating shaft is fixedly arranged on the housing 1), the gear 6 is coaxially and fixedly arranged on the rotating shaft, the first caliper 2 comprises a first positioning rule 21 and a first measuring rule 22 which are vertically connected (generally designed to be an L-shaped structure), the second caliper 3 comprises a second positioning rule 31 and a second measuring rule 32 which are vertically connected (generally designed to be an L-shaped structure), the first measuring ruler 22 and the second measuring ruler 32 are parallel to each other and are respectively arranged on two sides of the gear 6, the first measuring ruler 22 and the second measuring ruler 32 are both in sliding connection with the shell 1 (usually, the side, where the measuring ruler is not provided with a rack structure, of the measuring ruler is correspondingly provided with a sliding rail, the sliding rail is fixedly arranged on the shell 1), the first measuring ruler 22 is provided with a first rack matched with the gear 6, the second measuring ruler 32 is provided with a second rack matched with the gear 6, the first measuring ruler 22 and the second measuring ruler 32 can be driven to synchronously move through rotation of the gear 6, and the synchronous movement means that the synchronous extension or retraction lengths of the first rack and the second rack are identical, namely the transmission ratio of the first rack and the second rack relative to the gear 6 is identical. The first positioning rule 21 and the second positioning rule 31 are arranged relatively, the moving direction of the rotating shaft is set vertically, the moving directions of the first measuring rule 22 and the second measuring rule 32 are set horizontally as references, a vertical plane which passes through the central axis of the rotating shaft and is perpendicular to the moving direction of the first measuring rule 22 is set as a first vertical plane, the central line between the first positioning rule 21 and the second positioning rule 31 is located in the first vertical plane, and the central scale mark is arranged at the position of the first vertical plane on the shell 1 or the knob 7 or the central scale mark is arranged at the position of the first vertical plane on the shell 1 or the knob 7. When the knob 7 is utilized to rotate the gear 6, the first measuring ruler 22 and the second measuring ruler 32 move synchronously, and the first positioning ruler 21 and the second positioning ruler 31 can be driven to open or contract synchronously, so that the first positioning ruler 21 and the second positioning ruler 31 can be tightly attached to two ends of an object to be measured, positioning accuracy of the device is ensured, and the position of a center scale mark is the position of the center of the object.
A damping mechanism is arranged in the rotary connection structure of the knob 7 and the shell 1. When the gear 6 is rotated by the knob 7, the resistance applied by the damping mechanism needs to be overcome, and the damping mechanism can avoid random shaking of the first caliper 2 and the second caliper 3. It is understood that the damping mechanism may be implemented in various ways, for example, an annular friction plate may be directly disposed on the outer peripheral surface of the rotating shaft, and the friction resistance may be applied by the friction plate. The utility model also provides another simple and reliable damping mechanism, which comprises a plurality of tooth-shaped blocks 4 which are uniformly arranged at intervals in the circumferential direction of the gear 6, wherein one side of each tooth-shaped block 4 is meshed with the gear 6, one side of each tooth-shaped block 4, which is away from the gear 6, is provided with a sliding rod 5, the sliding rod 5 is in sliding connection with a fixed cylinder 8 on the shell 1, the moving axis of the sliding rod 5 is arranged along the radial direction of the gear 6, a cylindrical spring 9 is arranged between the fixed cylinder 8 and the tooth-shaped block 4, the cylindrical spring 9 is sleeved on the sliding rod 5, and the tooth-shaped block 4 is abutted against the gear 6 through the reset elastic force of the cylindrical spring 9. The tooth-shaped blocks 4 are symmetrically arranged.
The shell 1 is preferably a rectangular box body, the knob 7 is positioned outside the box body, the gear 6 is arranged in the box body, the moving directions of the first measuring ruler 22 and the second measuring ruler 32 are arranged along the length direction of the box body, and the measuring positioning ends of the first positioning ruler 21 and the second positioning ruler 31 are arranged in a protruding manner relative to the outer side end face of the box body. When measuring some objects, such as an outer wall, a prefabricated upright post and the like, the long side of the shell 1 can be directly attached to the surface of the object, so that the measurement and the positioning are convenient; in general, it may be preferable to provide a center tick mark on the long side of the housing 1 that is to be attached to the surface of the object. The housing 1 is the basic support part of the whole device, which is usually made of metallic material, ensuring the stability and reliability of the device.
To facilitate direct reading of the length of the object being measured, the first measuring scale 22 and the second measuring scale 32 are each provided with length measurement graduation marks.
Referring to fig. 5, the present utility model is applicable to prefabricated pillar centerline positioning. When the positioning is carried out on the center of the prefabricated upright, the two calipers are pulled open first, and then the first positioning ruler 21 and the second positioning ruler 31 are clamped on two sides of the prefabricated upright to be measured. Then, manually rotating the knob 7, the knob 7 controls the gear 6 to rotate, so that the callipers move on the guide rail of the housing 1, and finally the first positioning ruler 21 and the second positioning ruler 31 are clung to two sides of the prefabricated upright, and the center of the prefabricated upright is accurately positioned according to the direction provided by the center scale mark.
Referring to fig. 6, the present utility model is applicable to outer wall center line positioning. The two calipers are pulled apart first to be adjusted to be approximately the same as the thickness of the outer wall, and then the first positioning rule 21 and the second positioning rule 31 are clamped at both sides of the outer wall to be measured, as in the case of measuring the prefabricated upright. Then, the knob 7 is manually rotated so that the first positioning rule 21 and the second positioning rule 31 are closely attached to both sides of the outer wall, and the center of the outer wall is accurately positioned according to the direction provided by the center scale mark. The caliper has length measurement graduation marks, and the wall thickness can be directly known. Through using the device to measure on the wall many times, reduce the error, can verify thickness uniformity, connect the central point and be the central line of outer wall promptly, cooperate other devices, for example plumb weight gravity device, can verify the wall condition of perpendicularity fast.
The utility model is equally applicable to the positioning of the center and length of a circular or other regular shaped member, and if the bottom surface of the member is solid, the center and length can be measured according to the diagonal line of the bottom surface of the member (the measurement mode is the same as that of the measurement prefabricated upright post), and only the case that the bottom surface of the member is hollow is discussed below. Referring to fig. 7, the device is integrally placed in the inner cavity of the circular pipe fitting, and the caliper is pulled open until the caliper has no movable space, so that the device can be finely adjusted in the horizontal and vertical directions as required to obtain an accurate position. The plane of the caliper is the diameter plane, the length scale indicated on the caliper is the diameter length, the component center can be obtained according to the direction provided by the center scale mark on the shell, and other measures can be added in an auxiliary manner to determine the center, such as connecting steel wires and connecting adhesive tapes, and the center is drawn on the connecting steel wires and the connecting adhesive tapes.
Claims (4)
1. A device for job site center location, its characterized in that: comprises a shell (1), a first caliper (2), a second caliper (3), a gear (6) and a knob (7), wherein the back surface of the knob (7) is provided with a rotating shaft which is fixedly arranged, the rotary shaft is rotatably arranged on the shell (1), the gear (6) is coaxially and fixedly arranged on the rotating shaft, the first caliper (2) comprises a first positioning ruler (21) and a first measuring ruler (22) which are vertically connected, the second caliper (3) comprises a second positioning ruler (31) and a second measuring ruler (32) which are vertically connected, the first measuring ruler (22) and the second measuring ruler (32) are mutually parallel and are respectively arranged on two sides of the gear (6), the first measuring ruler (22) and the second measuring ruler (32) are both in sliding connection with the shell (1), the first measuring ruler (22) is provided with a first rack which is matched with the gear (6), the second measuring ruler (32) is provided with a second rack which is matched with the gear (6), the first measuring ruler (22) and the second measuring ruler (32) can be driven to synchronously move through the rotation of the gear (6), the first positioning ruler (21) and the second measuring ruler (32) are arranged in a horizontal direction relative to the first positioning ruler (31) and the second measuring ruler (32) which are arranged in a relative mode, the vertical plane which passes through the central axis of the rotating shaft and is perpendicular to the moving direction of the first measuring ruler (22) is set as a first vertical plane, the central line between the first positioning ruler (21) and the second positioning ruler (31) is positioned in the first vertical plane, and the position of the shell (1) or the knob (7) in the first vertical plane is provided with a central scale mark or both the two are provided with a central scale mark in the position of the first vertical plane; a damping mechanism is arranged in a rotary connection structure of the knob (7) and the shell (1).
2. The apparatus for job site centering as claimed in claim 1, wherein: the damping mechanism comprises a plurality of tooth-shaped blocks (4) which are circumferentially and evenly arranged at intervals on a gear (6), one side of each tooth-shaped block (4) is meshed with the gear (6), one side of each tooth-shaped block (4) deviating from the gear (6) is provided with a sliding rod (5), the sliding rods (5) are slidably connected with a fixed cylinder (8) on a shell (1), the moving axis of each sliding rod (5) is arranged along the radial direction of the gear (6), a cylindrical spring (9) is arranged between each fixed cylinder (8) and each tooth-shaped block (4), each cylindrical spring (9) is sleeved on each sliding rod (5), and the tooth-shaped blocks (4) are abutted against the gears (6) through the reset elastic force of the cylindrical springs (9).
3. The apparatus for job site centering as claimed in claim 1, wherein: the shell (1) is rectangular box body, the knob (7) is located outside the box body, the gear (6) is arranged in the box body, the moving direction of the first measuring ruler (22) and the second measuring ruler (32) is arranged along the length direction of the box body, and the measuring and positioning ends of the first positioning ruler (21) and the second positioning ruler (31) are arranged in a protruding mode relative to the outer side end face of the box body.
4. A device for job site centering as claimed in any one of claims 1 to 3, wherein: the first measuring ruler (22) and the second measuring ruler (32) are provided with length measuring graduation marks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321841023.6U CN220380421U (en) | 2023-07-13 | 2023-07-13 | Device for centering construction site |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321841023.6U CN220380421U (en) | 2023-07-13 | 2023-07-13 | Device for centering construction site |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220380421U true CN220380421U (en) | 2024-01-23 |
Family
ID=89565738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321841023.6U Active CN220380421U (en) | 2023-07-13 | 2023-07-13 | Device for centering construction site |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220380421U (en) |
-
2023
- 2023-07-13 CN CN202321841023.6U patent/CN220380421U/en active Active
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