Supporting bracket of measuring instrument tripod

Abstract

The utility model discloses a supporting bracket of a measuring instrument tripod, relates to the field of measurement, and solves the problem that the measuring instrument tripod cannot be erected on a high-altitude structure such as a roof beam. According to the technical scheme, a supporting support of the measuring instrument tripod comprises a center shaft and a supporting arm, a fixing clamp is arranged at the lower end of the center shaft and used for being fixed to a high-altitude structure needing to be measured such as a roof beam, a top plate is fixed to the upper end of the center shaft, and the center shaft is provided with external threads. The two clamping bodies are arranged on the outer side of the center shaft in a penetrating mode, the number of the supporting arms is two, one end of each supporting arm is provided with a shaft sleeve, the two shaft sleeves are arranged on the outer side of the center shaft in a sleeving mode, the two shaft sleeves are located between the two clamping bodies, and the two clamping bodies are used for tightly abutting against the two shaft sleeves. The top plate and the two supporting arms form three positions capable of supporting the tripod, so that the measuring instrument can be installed on the corresponding tripod for measurement. The tripod is used for erecting the measuring instrument.

Description

Technical Field

[0001] The utility model relates to the field of measurement, and specifically relates to a bracket for supporting a tripod of a measuring instrument. Background Art

[0002] Roof beams mainly bear the pressure from purlins and roof panels in the roof structure. In factory buildings and large-span building structures, most roof beams are made of steel structures. Roof beams have large spans and a large number of them. During construction, it is necessary to repeatedly measure the elevation and align them. Since the top surface of the roof beam is a long strip-shaped plane, and the width of the long strip-shaped plane is very small, and the position of the roof beam is high, it is not safe and stable to directly install a measuring instrument on the roof beam.

[0003] In order to install a measuring instrument on a steel structure, a bracket can be fixedly installed on the steel structure, and then the measuring instrument can be installed on the bracket. For example, the patent with the application publication number CN 115574244 A discloses a steel structure high-altitude measurement erection instrument device, which includes a support frame and a fixing component installed at the bottom of the support frame. The fixing component is used for fixing with the outside, facilitating quick fixing on the steel column flange. The support frame includes a telescopic rod and a mounting plate installed at the top of the telescopic rod. The mounting plate is used for installing the measuring instrument. Another example is that the patent with the authorization announcement number CN 203981176 U discloses a portable measuring instrument support base, which includes a connecting rod, a fixing clip arranged at one end of the connecting rod, and a fixing end arranged at the other end of the connecting rod. The fixing clip is used for clamping the flange of the steel column. An activity end is movably fixed on the fixing end through a mounting bolt, and an instrument support is arranged on the activity end. Another example is that the patent with the application publication number CN 110440770 A discloses an instrument bracket suitable for steel structure measurement correction and its measurement method. The instrument bracket includes a steel plate fixing frame and an instrument fixing frame. The steel plate fixing frame is fixed on the steel beam through a fixing member, and a stable and reliable instrument installation platform is constructed in a space without an operating surface at high altitude. The instrument fixing frame includes a connecting plate, an instrument installation platform and a receiving target. The existing brackets including the above-mentioned several patents are all used for fixedly installing on steel structures, and the brackets are provided with structures for installing measuring instruments, and the measuring instruments are directly installed on the brackets. However, measuring instruments are generally installed on a tripod and adjusted. Directly installing the measuring instrument on the bracket is not conducive to the adjustment of the measuring instrument, resulting in an increase in measurement error. Summary of the Utility Model

[0004] The utility model provides a support bracket for a tripod of a measuring instrument, which solves the problem that a tripod of a measuring instrument cannot be erected on a high-altitude structure such as a roof beam.

[0005] The technical solution adopted by the present utility model is as follows: The support bracket of the measuring instrument tripod includes a central shaft and support arms. A fixing clip is provided at the lower end of the central shaft, and a top plate is fixed at the upper end of the central shaft. The central shaft is provided with an external thread, and two clamping bodies are penetrated outside the central shaft. At least one of the clamping bodies is a locking nut. There are two support arms. Shaft sleeves are respectively provided at one ends of the two support arms, and the two shaft sleeves are respectively sleeved outside the central shaft, and the two shaft sleeves are located between the two clamping bodies.

[0006] In order to avoid the problem that the two support arms interfere with each other due to being too close, further: An axial retaining sleeve is also provided between the two shaft sleeves, and the axial retaining sleeve is sleeved outside the central shaft.

[0007] The two clamping bodies are used to directly tighten the two shaft sleeves. Further: The clamping body near the upper end of the central shaft is a locking nut, and the clamping body near the lower end of the central shaft is a snap ring, and the snap ring is sleeved outside the central shaft.

[0008] In order for the tripod to be stably erected on the top plate and the two support arms, further: The top plate is provided with a positioning structure, and the two support arms are respectively provided with positioning structures at intervals along their lengths.

[0009] Specifically: The top plate is provided with a positioning hole or a positioning groove. The two support arms are angle steels, and the opening direction of the inner corner of the angle steel is upward; or, the top plate is provided with a positioning hole or a positioning groove, and the two support arms are respectively provided with positioning holes or positioning grooves at intervals along their lengths.

[0010] In order to ensure the strength of the support bracket, further: The central shaft, the fixing clip, the top plate and the support arms are all made of metal materials. For example: The top plate is a steel plate, the central shaft is a stud, and the central position of the top plate is connected by screw thread or welding.

[0011] The roof beam is generally an I-beam, and the fixing clip is correspondingly used for fixed installation on the upper flange of the I-beam. Specifically: The lower end of the central shaft is fixedly connected to the fixing clip. The fixing clip includes two parallel clamping plates and a connecting plate connecting the two clamping plates. The fixing clip is C-shaped in its cross-section. At least one screw hole is provided on one clamping plate of the fixing clip, and a suitable tightening bolt is provided in the screw hole; or, the fixing clip includes a fixing nut and two identical clamping plates. The clamping plate includes an upper clamping plate and a lower clamping plate that are parallel to each other and a connecting plate connecting the upper clamping plate and the lower clamping plate. The clamping plate is C-shaped in its cross-section. The opening directions of the two clamping plates are opposite, and a through hole is formed by splicing between the upper clamping plates of the two clamping plates. The central shaft penetrates through the through hole, and the central shaft penetrates through the fixing nut. The fixing nut is located inside the two clamping plates, and the thickness of the fixing nut is less than the distance between the upper clamping plate and the lower clamping plate.

[0012] In order to facilitate the fixing nut not to rotate when rotating the central shaft, further: A slot adapted to the fixing nut is provided on the inner side of the upper clamping plates of the two clamping plates.

[0013] For the convenience of assembling the two clamping plates, further: the through hole formed by splicing between the upper clamping plates of the two clamping plates is an oblong hole, and the upper clamping plates of the two clamping plates are clamped between the fixing nut and the clamping body near the lower end of the central axis.

[0014] The beneficial effects of the present utility model are as follows: The fixing clip fixes the central axis to the object to be measured, and the central axis remains vertical or nearly vertical. The top plate and the two support arms form three positions that can support the tripod, so that the measuring instrument can be installed on the corresponding tripod for measurement, thereby ensuring the measurement accuracy. The two support arms are fixed by two clamping bodies, ensuring the stability of the two support arms and the entire support bracket. The two support arms can be rotated around the central axis to an appropriate position and fixed, and can adapt to tripods of different sizes. After the measurement is completed, the fixing clip is released, and the support bracket can be installed on another object to be measured, facilitating multiple and rapid relocation for measurement. Description of the Drawings

[0015] Figure 1 It is a schematic structural diagram of an embodiment of the present utility model after being installed on the upper flange of an I-beam.

[0016] Reference numerals: central axis 1, support arm 2, top plate 3, clamping body 4, shaft sleeve 5, shaft clamping sleeve 6, fixing nut 7, clamping plate 8, I-beam 9. Detailed Description of the Embodiment

[0017] The present utility model will be further described below with reference to the drawings.

[0018] When in use, the present utility model is fixedly installed on high-altitude structures such as roof beams that need to be measured, for erecting a tripod for a measuring instrument. As Figure 1 shown, the support bracket of the measuring instrument tripod of the present utility model includes a central axis 1 and a support arm 2. A fixing clip is provided at the lower end of the central axis 1. The fixing clip is used to be installed on high-altitude structures such as roof beams, so that the central axis 1 and other objects installed on the central axis 1 are fixed to the high-altitude structure to be measured. The roof beam is generally an I-beam 9, and the fixing clip is correspondingly used for fixed installation on the upper flange of the I-beam 9. The following provides an embodiment of the fixing clip. The lower end of the central axis 1 is fixedly connected to the fixing clip. For example, the lower end of the central axis 1 is welded or mechanically connected to the fixing clip. The fixing clip includes two parallel clamping plates and a connecting plate connecting the two clamping plates. The corresponding planes of the clamping plates are perpendicular to the central axis 1. The fixing clip is C-shaped in its cross-section. The two clamping plates are used to clamp the upper flange of the I-beam 9. Therefore, the distance between the two clamping plates is greater than the thickness of the upper flange of the I-beam 9. At least one screw hole is provided on one clamping plate of the fixing clip, and an adapted tightening bolt is provided in the screw hole. The tightening bolt is used to tighten the upper flange of the I-beam 9, so that the fixing clip is firmly fixed to the upper flange of the I-beam 9.

[0019] Another embodiment of the fixing clip is provided below. Refer to Figure 1 , the fixing clip includes a fixing nut 7 and two identical clamping plates 8. The clamping plate 8 includes an upper clamping plate and a lower clamping plate that are parallel to each other and a connecting plate that connects the upper clamping plate and the lower clamping plate. The cross-section of the clamping plate 8 is C-shaped. The clamping plate 8 is used to clamp the upper flange of the I-beam 9. Therefore, the distance between the upper clamping plate and the lower clamping plate is greater than the thickness of the upper flange of the I-beam 9. The opening directions of the two clamping plates 8 are opposite, and a through hole is formed by splicing between the upper clamping plates of the two clamping plates 8. The central shaft 1 passes through the through hole. The central shaft 1 passes through the fixing nut 7. The fixing nut 7 is located inside the two clamping plates 8, and the thickness of the fixing nut 7 is less than the distance between the upper clamping plate and the lower clamping plate. The fixing nut 7 is installed at the lower end of the central shaft 1. The lower end of the central shaft 1 is placed on the top surface of the upper flange of the I-beam 9. Then, the two clamping plates 8 are clamped on both sides of the upper flange to clamp the fixing nut 7 and the upper flange. Rotate the central shaft 1. The fixing nut 7 does not rotate. The fixing nut 7 jacks up the two clamping plates 8 to achieve the purpose of fixing the central shaft 1 to the I-beam 9. In order to facilitate the fixing nut 7 not to rotate when rotating the central shaft 1, a clamping groove adapted to the fixing nut 7 is provided on the inner side of the upper clamping plate of the two clamping plates 8. For example, both the fixing nut 7 and the clamping groove are in the shape of a regular hexagonal prism and are adapted to each other. Another example is that the fixing nut 7 is an M20 nut. In order to facilitate the assembly of the two clamping plates 8, the through hole formed by splicing between the upper clamping plates of the two clamping plates 8 is an oval hole. The upper clamping plates of the two clamping plates 8 are clamped between the fixing nut 7 and the clamping body 4 near the lower end of the central shaft 1, that is, the clamping body 4 near the lower end of the central shaft 1 is in tight fit with the fixing nut 7.

[0020] A top plate 3 is fixed to the upper end of the central shaft 1. The top plate 3 is used to form a position for supporting the measuring instrument tripod. In order to ensure the strength of the top plate 3, the top plate 3 is preferably a metal plate, generally a steel plate. For example, the top plate 3 is a steel plate with a length, width and thickness of 200mm×200mm×10mm respectively. In order to ensure the strength of the support bracket, further: the central shaft 1, the fixing clip, the top plate 3 and the support arm 2 are all made of metal, generally all made of steel. The top plate 3 can be movably installed at the upper end of the central shaft 1 or fixedly installed at the upper end of the central shaft 1. For example, the top plate 3 is threadedly installed at the upper end of the central shaft 1 or welded to the upper end of the central shaft 1.

[0021] The central shaft 1 is provided with an external thread, and two clamping bodies 4 are sleeved outside the central shaft 1, and at least one of the clamping bodies 4 is a locking nut. There are two support arms 2. One ends of the two support arms 2 are respectively provided with bushings 5. The inner diameter of the bushing 5 is adapted to the outer diameter of the central shaft 1. For example, the bushing 5 is welded and fixed to one end of the support arm 2. The support arm 2 is a straight piece, and the center line of the bushing 5 is perpendicular to the corresponding straight line of the support arm 2. The two bushings 5 are respectively sleeved outside the central shaft 1, and the two bushings 5 are located between the two clamping bodies 4. For example, the two bushings 5 are both M20 bushings. The two clamping bodies 4 are used to directly press the two bushings 5 tightly, so that the two support arms 2 are fixed to the central shaft 1. The two clamping bodies 4 can both be nuts. For example, the central shaft 1 is a screw rod with a length of 300 mm, and the two clamping bodies 4 are M20 nuts. When only one of the two clamping bodies 4 is a nut, the other clamping body 4 presses the bushing 5 tightly by means of the top plate 3 or the fixed clamp, or the clamping body 4 and the central shaft 1 are an integral body or fixed to the central shaft 1. For example, see Figure 1 , the clamping body 4 near the upper end of the central shaft 1 is a locking nut, and the clamping body 4 near the lower end of the central shaft 1 is a snap ring. The snap ring is sleeved outside the central shaft 1. The snap ring can axially displace along the central shaft 1, and the snap ring can rotate around the central shaft 1. The snap ring presses the bushing 5 tightly by means of the clamping plate 8 and the fixed nut 7. In order to avoid the problem that the two support arms 2 interfere with each other because the distance is too close, a shaft collar 6 is also provided between the two bushings 5. The shaft collar 6 is sleeved outside the central shaft 1. Neither the shaft collar 6 nor the snap ring is provided with an internal thread.

[0022] The top plate 3 and the two support arms 2 form three positions for supporting the tripod, so that the measuring instrument can be installed on the corresponding tripod for measurement. The included angle formed by the two support arms 2 is adjustable, so as to adapt to tripods of different sizes. In order for the tripod to be stably erected on the top plate 3 and the two support arms 2, the top plate 3 is provided with a positioning structure, and the two support arms 2 are respectively provided with positioning structures at intervals along their lengths. For example, the top plate 3 is provided with positioning holes or positioning grooves, and the two support arms 2 are angle steels. For example, the support arm 2 is an equal-angle steel of ∠50° with a length of 1.5 m, and the opening direction of the inner corner of the angle steel is upward. For another example, the top plate 3 is provided with positioning holes or positioning grooves, and the two support arms 2 are respectively provided with positioning holes or positioning grooves at intervals along their lengths.

Claims

1. A support bracket for a tripod of a measuring instrument, characterized in that: The invention comprises a central shaft (1) and a support arm (2), wherein a fixing clamp is provided at the lower end of the central shaft (1), a top plate (3) is fixed at the upper end of the central shaft (1), the central shaft (1) is provided with an external thread, two clamping bodies (4) are passed through the outer side of the central shaft (1), at least one of the clamping bodies (4) is a locking nut, the support arms (2) are two, one end of the two support arms (2) is respectively provided with a shaft sleeve (5), the two shaft sleeves (5) are respectively sleeved on the outer side of the central shaft (1), and the two shaft sleeves (5) are located between the two clamping bodies (4).

2. The support bracket of the tripod of the measuring instrument according to claim 1, characterized in that: A shaft clamping sleeve (6) is also provided between the two shaft sleeves (5), and the shaft clamping sleeve (6) is sleeved on the outside of the central shaft (1).

3. The support bracket of the tripod of the measuring instrument according to claim 1, characterized in that: The clamping body (4) close to the upper end of the central shaft (1) is a locking nut, and the clamping body (4) close to the lower end of the central shaft (1) is a clamping ring, which is sleeved on the outer side of the central shaft (1).

4. The support bracket of the tripod of the measuring instrument according to claim 1, characterized in that: The top plate (3) is provided with a positioning structure, and the two support arms (2) are respectively provided with positioning structures at intervals along the length direction thereof.

5. The support bracket of the tripod of the measuring instrument according to claim 4, characterized in that: The top plate (3) is provided with a positioning hole or a positioning groove, the two support arms (2) are angle steels, and the inner angle opening direction of the angle steels faces upward; or, the top plate (3) is provided with a positioning hole or a positioning groove, and the two support arms (2) are respectively provided with positioning holes or positioning grooves at intervals along their length direction.

6. The support bracket of the tripod of the measuring instrument according to claim 1, characterized in that: The central shaft (1), the fixing clamp, the top plate (3) and the support arm (2) are all made of metal.

7. The support bracket of the tripod of the measuring instrument according to claim 6, characterized in that: The top plate (3) is a steel plate, the central axis (1) is a stud, and the center position of the top plate (3) is connected with threads or welding.

8. The support bracket of a tripod for a measuring instrument according to any one of claims 1 to 7, characterized in that: The lower end of the central axis (1) is fixedly connected to a fixing clamp, the fixing clamp comprising two parallel clamping plates and a connecting plate connecting the two clamping plates, the fixing clamp having a C-shaped cross section, one clamping plate of the fixing clamp being provided with at least one screw hole, and a matching tightening bolt being provided in the screw hole; or the fixing clamp comprising a fixing nut (7) and two identical clamping plates (8), the clamping plates (8) comprising an upper clamping plate and a lower clamping plate parallel to each other and a connecting plate connecting the upper clamping plate and the lower clamping plate, the clamping plates (8) having a C-shaped cross section, the opening directions of the two clamping plates (8) being opposite, and the upper clamping plates of the two clamping plates (8) being spliced ​​to form a through hole, the central axis (1) passing through the through hole, the fixing nut (7) being passed through the central axis (1), the fixing nut (7) being located in the two clamping plates (8), and the thickness of the fixing nut (7) being less than the spacing between the upper clamping plate and the lower clamping plate.

9. The support bracket of the tripod of the measuring instrument according to claim 8, characterized in that: The inner sides of the upper clamping plates of the two clamping plates (8) are provided with clamping grooves adapted to the fixing nuts (7).

10. The support bracket of the tripod of the measuring instrument according to claim 8, characterized in that: The through hole formed by splicing the upper clamping plates of the two clamping plates (8) is a waist-shaped hole, and the upper clamping plates of the two clamping plates (8) are clamped between the fixing nut (7) and the clamping body (4) close to the lower end of the central axis (1).

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