CN219755793U - Adjustable supporting device for measuring instrument - Google Patents

Abstract

The utility model belongs to the technical field of road and bridge construction, and particularly discloses an adjusting type supporting device for a measuring instrument. The utility model can adjust the height and the circumferential position of the supporting device, and has higher adjusting accuracy and convenience.

Description

Adjustable supporting device for measuring instrument

Technical Field

The utility model relates to the technical field of road and bridge construction, in particular to an adjustable supporting device for a road and bridge measuring instrument.

Background

The road bridge construction measurement is often used for instruments such as total stations and leveling instruments which need to provide support, and the existing road bridge measurement instrument needs to be supported through a frame body when in use, so that the measurement of the instrument is facilitated.

At present, there is the research and discloses an engineering measuring apparatu support for building engineering, including plate body, gyro wheel, backup pad, mounting panel and riser, the both sides of plate body bottom are all fixedly connected with gyro wheel, the top fixedly connected with backup pad of plate body, and the flexible subassembly of both sides all fixedly connected with of backup pad, the inner chamber has been seted up to the inside of backup pad, the inside of inner chamber is provided with the riser, and the top of riser extends to the outside of backup pad and fixedly connected with mounting panel, the top of mounting panel is provided with the cell body, the inside of cell body is provided with the measuring apparatu bottom plate, and the outside of measuring apparatu bottom plate is provided with and installs and removes the subassembly. According to the scheme, the height of the mounting plate is limited by the through hole of the limiting rod, the height is adjusted, but the height adjustment precision is poor, the height adjustment of a plurality of gears can be only performed, the position of the vertical plate needs to be adjusted during adjustment, the limiting rod is aligned with the through hole, and the height adjustment is inconvenient; in addition, this scheme can't realize the circumference position adjustment of instrument, has reduced the use convenience.

Therefore, if a supporting device for a measuring instrument can be provided, the height and circumferential position of the instrument can be easily adjusted, and the convenience of use of the supporting device can be further improved.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, an object of the present utility model is to provide an adjustable supporting device for a measuring instrument, which is used for solving the problems that in the prior art, the height of the supporting device cannot be conveniently and accurately adjusted, and the circumferential rotation angle cannot be adjusted while the height is adjusted.

In order to achieve the above and other related objects, the present utility model provides an adjusting type supporting device for a measuring instrument, which comprises a fixed table, a circumferential adjusting component rotatably connected to the fixed table, and a first height adjusting component installed under the fixed table, wherein the measuring instrument is installed on the circumferential adjusting component, the first height adjusting component comprises a screw, a sleeve component and a limiting block, the upper end of the screw is fixedly connected with the bottom of the fixed table, the lower end of the screw extends into the sleeve component, the outer wall of the screw is in threaded connection with the sleeve component, the limiting block is fixedly connected to the upper end of the sleeve component, a chute is arranged on the outer wall of the screw, the limiting block is slidably connected in the chute, and when the sleeve component rotates, the sleeve component drives the screw to move up and down along the sleeve component.

In an embodiment of the utility model, the sleeve assembly comprises a first sleeve, a second sleeve and a first rotating shaft, wherein the inner wall of the second sleeve is in threaded connection with the screw, the upper end of the first rotating shaft is connected with the bottom of the second sleeve, the lower end of the first rotating shaft is rotatably connected to the inner bottom wall of the first sleeve, and the second sleeve is rotatably connected to the inner side wall of the first sleeve through the first rotating shaft.

In an embodiment of the utility model, the first height adjusting assembly further comprises a hand wheel assembly and a bevel gear assembly, the bevel gear assembly comprises a first bevel gear and a second bevel gear, the second bevel gear is sleeved on the first rotating shaft and connected with the outer wall of the first rotating shaft, the second bevel gear is meshed with the first bevel gear, the first bevel gear is connected with the hand wheel assembly, and the hand wheel assembly is used for driving the bevel gear assembly to rotate.

In an embodiment of the present utility model, the first bevel gear is disposed in the first sleeve, the height adjusting assembly includes a hand wheel assembly, the hand wheel assembly includes a second rotating shaft disposed horizontally, one end of the second rotating shaft extends into the inner cavity of the first sleeve and is connected to the first bevel gear, and the second rotating shaft is rotatably connected to the first sleeve.

In an embodiment of the utility model, the circumferential adjustment assembly includes a workbench and a third rotating shaft, the lower end of the third rotating shaft is rotatably connected to the upper side of the fixed table, the upper end of the third rotating shaft is connected to the workbench, and the workbench is used for installing the measuring instrument.

In an embodiment of the utility model, the circumferential adjustment assembly further comprises a clamping ring and a limiting assembly, the clamping ring is sleeved on the third rotating shaft, a plurality of threaded holes which are distributed at intervals are formed in the outer side wall of the clamping ring, the limiting assembly comprises a support plate and a connecting piece, one end outer wall of the support plate is connected with the fixed table, and the connecting piece penetrates through the other end of the support plate and is detachably connected with the threaded holes.

In an embodiment of the utility model, the supporting device further includes a second height adjusting assembly, and the second height adjusting assembly is installed at the lower side of the first height adjusting assembly.

In an embodiment of the utility model, the second height adjusting assembly of the supporting device further comprises a folding bracket assembly, the folding bracket assembly comprises a supporting plate, a vertical rod and a plurality of telescopic supporting rods, the supporting plate is connected to the bottom of the first height adjusting assembly, the bottom of the supporting plate is connected with the vertical rod, the supporting rods are distributed at intervals along the circumference of the vertical rod, and one end, close to the first height adjusting assembly, of the supporting rods is hinged with the supporting plate.

In an embodiment of the utility model, the folding bracket assembly further comprises a connecting rod and a sliding sleeve, the sliding sleeve is arranged on the outer wall of the vertical rod in a sliding sleeved mode, the connecting rod is connected between the sliding sleeve and the supporting rod, and two ends of the connecting rod are hinged to the sliding sleeve and the supporting rod respectively. In another embodiment of the present utility model, the circumferential adjustment assembly includes a workbench and a spherical cradle head, the upper end of the spherical cradle head is connected with the workbench, the lower end of the spherical cradle head is connected with the first height adjustment assembly, and the workbench is used for installing the measuring instrument.

As described above, the present utility model has the following advantageous effects:

when the height of the supporting device is adjusted, an operator rotates the hand wheel assembly, the bevel gear assembly drives the first rotating shaft to rotate, and then the second sleeve is driven to rotate in the first sleeve, and the screw rod is in threaded connection with the second sleeve and moves up and down along the second sleeve under the transmission effect of the threads;

the circumferential adjusting assembly is used for supporting the measuring instrument, the circumferential adjusting assembly is driven to drive the measuring instrument to circumferentially rotate, the circumferential rotating position is limited through the limiting assembly, position adjustment is facilitated, and use convenience is improved. The clamping ring is provided with a plurality of equally-spaced positioning points, namely threaded holes, so that the circumferential rotation adjustment precision is higher.

Drawings

FIG. 1 is a schematic view of an adjustable support device for a measuring instrument according to the present utility model;

FIG. 2 is an enlarged view of a portion of FIG. 1A;

FIG. 3 is an enlarged view of a portion of B in FIG. 1;

FIG. 4 is an enlarged view of a portion of C in FIG. 1;

FIG. 5 is a schematic view illustrating the installation of the clamping ring and the third shaft according to the present utility model;

fig. 6 is a schematic installation view of an adjustable support device for a measuring instrument according to another embodiment of the present utility model.

Reference numerals

1: a fixed table; 2: a first sleeve; 3: a limiting block; 4: a second sleeve; 5: a first rotating shaft; 6: a screw; 7: a chute; 8: a work table; 9: a third rotating shaft; 10: a clamping ring; 11: a threaded hole; 12: a support plate; 13: a connecting piece; 14: a support plate; 15: a vertical rod; 16: a support rod; 17: a sliding sleeve; 18: a connecting rod; 19: a first bevel gear; 20: a second bevel gear; 21: a second rotating shaft; 22: a connecting plate; 23: a rotary handle; 24: a handle; 25: and a ground pin.

Detailed Description

Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present utility model with reference to specific examples. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model.

The utility model provides an adjustable supporting device for a measuring instrument, which can be used for roads and bridges, and comprises a fixed table 1, a circumferential adjusting component rotationally connected to the fixed table 1 and a first height adjusting component arranged below the fixed table 1, wherein the measuring instrument is arranged on the circumferential adjusting component, the first height adjusting component comprises a screw rod 6, a sleeve component and a limiting block 3, the upper end of the screw rod 6 is fixedly connected with the bottom of the fixed table 1, the lower end of the screw rod 6 stretches into the sleeve component, the outer wall of the screw rod 6 is in threaded connection with the sleeve component, the limiting block 3 is fixedly connected with the upper end of the sleeve component, a chute 7 is arranged on the outer wall of the screw rod 6, the limiting block 3 is in sliding connection with the chute 7, and when the sleeve component rotates, the sleeve component drives the screw rod 6 to move up and down along the sleeve component.

In a specific embodiment of the utility model, the circumferential adjustment assembly comprises a workbench 8, a third rotating shaft 9 and a clamping ring 10, one end of the third rotating shaft 9 is rotatably connected to the upper side of the fixed table 1, the other end of the third rotating shaft 9 is connected with the workbench 8, the workbench 8 is used for supporting a measuring instrument, and the clamping ring 10 is sleeved on the third rotating shaft 9 and is connected with the outer wall of the third rotating shaft 9.

In another embodiment of the present utility model, the circumferential adjustment assembly includes a table 8 and a spherical head, the upper end of the spherical head is connected to the table 8, the lower end of the spherical head is connected to the first height adjustment assembly, and the table 8 is used for installing a measuring instrument.

The present utility model will be described in detail by way of specific examples. It is also to be understood that the following examples are given solely for the purpose of illustration and are not to be construed as limitations upon the scope of the utility model, as many insubstantial modifications and variations are within the scope of the utility model as would be apparent to those skilled in the art in light of the foregoing disclosure. The specific process parameters and the like described below are also merely examples of suitable ranges, i.e., one skilled in the art can make a suitable selection from the description herein and are not intended to be limited to the specific values described below.

Example 1

As shown in fig. 1, the measuring device of the present embodiment includes a fixed table 1, a circumferential adjustment assembly rotatably connected to the upper side of the fixed table 1, and a height adjustment assembly fixedly connected to the lower side of the fixed table 1. Wherein. The upside of the fixed table 1 is one side close to the measuring instrument, the downside of the fixed table 1 is one side far away from the measuring instrument, and the measuring device of the embodiment is arranged on the ground. The circumference adjusting part comprises a workbench 8, a third rotating shaft 9 and a clamping ring 10, wherein the third rotating shaft 9 and the clamping ring 10 form a rotary table part of the embodiment, the workbench 8 is used for installing a measuring instrument, the lower end of the third rotating shaft 9 is rotationally connected to the upper side of the fixed table 1, the upper end of the third rotating shaft 9 is fixedly connected with the workbench 8, and the clamping ring 10 is sleeved on the third rotating shaft 9 and is connected with the outer wall of the third rotating shaft 9. When the operator rotates the table 8, the third rotation shaft 9 rotates and drives the measuring instrument mounted on the table 8 to rotate circumferentially.

As shown in fig. 5, the outer side wall of the fastening ring 10 in this embodiment is provided with a plurality of equally spaced threaded holes 11. Preferably, 36 screw holes 11 can be arranged, and the axis included angle between two adjacent screw holes 11 and the third rotating shaft 9 is 10 degrees, so that operators can adjust according to the circumferential rotation angle demand, the circumferential rotation angle adjusting accuracy is improved, and the practicability is improved. The number of the screw holes 11 is not specifically limited, and may be set according to actual needs.

As shown in fig. 2, the circumferential adjustment assembly further comprises a limiting assembly, the limiting assembly comprises a support plate 12 and a connecting piece 13, one end outer wall of the support plate 12 is connected with the fixed table 1, and the connecting piece 13 penetrates through the other end of the support plate 12 and is detachably connected with the threaded hole 11. Specifically, the connecting piece 13 may be a butterfly bolt, one end of the butterfly bolt penetrates through the support plate 12 and is in threaded connection with any one of the threaded holes 11 on the clamping ring 10, each threaded hole 11 corresponds to one positioning point, and the positioning point is set in such a way, the turntable assembly is driven to rotate by rotating the workbench 8, circumferential rotation angle of the measuring instrument is adjusted, and after adjustment is completed, the measuring instrument is screwed into the corresponding threaded hole 11 by rotating the butterfly bolt, so that the circumferential rotation angle is fixed.

Specifically, in this embodiment, the workbench 8 and the measuring instrument are assembled through the mounting groove or the quick release plate, and the specific assembly mode of the workbench 8 and the measuring instrument is not limited here. Preferably, a level corrector (not shown in the drawings) may be installed on the workbench 8, and the specific model and working distance of the level corrector are all in the prior art, which is not described herein. In the embodiment, the operation staff can conveniently adjust the circumferential rotation angle of the workbench 8 through the level corrector, so that the measurement accuracy of the measuring instruments for roads, bridges and the like is improved. More preferably, the outer side wall of the workbench 8 is fixedly connected with a holding block, and an operator rotates the workbench 8 by holding the holding block, so that the circumferential rotation angle of the measuring instrument is adjusted, and convenience is achieved.

As shown in fig. 1, 3 and 4, the height adjusting assembly of the embodiment comprises a screw rod 6 and a sleeve assembly, wherein the upper end of the screw rod 6 is connected with the lower side of the fixed table 1, the lower end of the screw rod 6 stretches into the sleeve assembly, the outer wall of the screw rod 6 is in threaded connection with the sleeve assembly, and when the sleeve assembly rotates, the sleeve assembly drives the screw rod 6 to move up and down along the sleeve assembly and position the screw rod 6.

Specifically, the sleeve assembly comprises a first sleeve 2, a second sleeve 4 and a first rotating shaft 5, wherein the inner wall of the second sleeve 4 is in threaded connection with a screw rod 6, the upper end of the first rotating shaft 5 is connected to the bottom of the second sleeve 4, the lower end of the first rotating shaft 5 is rotationally connected to the inner bottom wall of the first sleeve 2, and the second sleeve 4 is rotationally connected to the inner side wall of the first sleeve 2 through the first rotating shaft 5. The inside wall of the first sleeve 2, which is close to one end of the fixed table 1, is connected with a plurality of limiting blocks 3, a sliding groove 7 is arranged on the outer wall of the screw rod 6, and the limiting blocks 3 are in sliding connection in the sliding groove 7. When the first rotating shaft 5 rotates, the second sleeve 4 connected with the first rotating shaft is driven to rotate in the first sleeve 2, and due to the fact that the screw rod 6 is in threaded connection with the second sleeve 4, the screw rod 6 moves in the second sleeve 4 relative to the second sleeve 4 under the transmission effect of the threaded structure, and up-down lifting motion is carried out along the length direction of the first sleeve 2. Because stopper 3 sliding connection on first sleeve 2 is on the spout 7 of screw rod 6, this embodiment realizes the circumference spacing of screw rod 6 through stopper 3 and spout 7 for screw rod 6 only can reciprocate at second sleeve 4, can not take place to rotate, and then drives revolving stage subassembly and the measuring instrument that are connected with screw rod 6 and reciprocate, thereby reaches the purpose that carries out the altitude mixture control to strutting arrangement. Specifically, the screw 6 of the present embodiment has a certain rigidity and supporting force to drive the circumferential adjustment assembly and the measuring instrument to move.

Specifically, the first height adjusting assembly comprises a bevel gear assembly, the bevel gear assembly comprises a first bevel gear 19 and a second bevel gear 20, the second bevel gear 20 is sleeved on the first rotating shaft 5 and is connected with the outer wall of the first rotating shaft 5, and the second bevel gear 20 is meshed with the first bevel gear 19. The height adjusting assembly comprises a hand wheel assembly, the hand wheel assembly comprises a second rotating shaft 21, one end of the second rotating shaft 21 stretches into the inner cavity of the first sleeve 2 and is connected with the first bevel gear 19, and the second rotating shaft 21 is connected with the first sleeve 2 in a rotating mode. The hand wheel assembly further comprises a connecting plate 22 and a rotating handle 23, wherein the connecting plate 22 is connected to one end, far away from the first bevel gear 19, of the second rotating shaft 21, the second rotating shaft 21 is rotatably connected with the first sleeve 2 through a bearing, the rotating handle 23 is fixedly connected to the connecting plate 22, and the rotating handle 23 is used for being held by an operator. Further, when the operator rotates the rotary handle 23, the second rotating shaft 21 is driven to rotate in the first sleeve 2, then the first bevel gear 19 is driven to rotate, the second bevel gear 20 and the first rotating shaft 5 connected with the second bevel gear 20 are driven to rotate through the meshing transmission function of the bevel gear assembly, the second sleeve 4 is driven to rotate through the first rotating shaft 5, and then the screw rod 6 is driven to move up and down, so that the vertical height of the supporting device is adjusted. The rotary handle 23 is rotated in this embodiment, and through the linkage of hand wheel subassembly, bevel gear subassembly and sleeve subassembly, realize high regulation, and this embodiment is through this kind of setting up the mode for it is more convenient to adjust strutting arrangement, and uses manpower sparingly, once only realizes adjusting and location.

Specifically, as shown in fig. 1, a handle 24 is fixedly connected to the outer wall of the first sleeve 2 in this embodiment, and the handle 24 is used for an operator to hold, so that the operator carries the supporting device, and portability is further improved.

Specifically, as shown in fig. 1, the supporting device further includes a second height adjusting component, the second height adjusting component is installed at the lower side of the first height adjusting component, the second height adjusting component includes a folding bracket component, and the supporting device is fixed on the ground through the folding bracket component in this embodiment. The folding bracket assembly comprises a supporting plate 14, a vertical rod 15 and a plurality of telescopic supporting rods 16, wherein the supporting plate 14 is connected to the bottom of the first height adjusting assembly, the bottom of the supporting plate 14 is connected with the vertical rod 15, the supporting rods 16 are distributed at intervals along the circumference of the vertical rod 15, one ends, close to the first height adjusting assembly, of the supporting rods 16 are hinged to the supporting plate 14, and the supporting rods 16 and the vertical rod 15 have a certain inclination angle. The folding bracket assembly further comprises a connecting rod 18 and a sliding sleeve 17, the sliding sleeve 17 is arranged on the outer wall of the vertical rod 15 in a sliding sleeve mode, the connecting rod 18 is connected between the sliding sleeve 17 and the supporting rod 16, and two ends of the connecting rod 18 are hinged to the sliding sleeve 17 and the supporting rod 16 respectively. Through this kind of setting scheme, this embodiment drives connecting rod 18 through sliding sleeve 17 and reciprocates along pole setting 15, and then realizes the packing up and the expansion of a plurality of branches 16, is convenient for accomodate it when not using strutting arrangement, conveniently carries. Preferably, in this embodiment, the bottom of the upright 15 and the plurality of struts 16 close to the ground is fixedly connected with a ground pin 25, so as to further improve the installation stability of the bottom of the supporting device and the ground, and facilitate the measurement of the measuring instrument. More preferably, the strut 16 is a telescopic strut 16 (not shown in the figures) so as to expand the adjustment range of the vertical height and improve the applicability of the device.

Specifically, the usage method of the adjustable supporting device of the embodiment is as follows:

the operator deploys the folding bracket assembly by sliding the sliding sleeve 17 and secures the support device to an installation location such as the ground by the ground pin 25.

When the circumferential rotation position of the measuring instrument needs to be adjusted, an operator rotates the workbench 8 through the holding block of the workbench 8, and when the workbench rotates to the required circumferential position, the butterfly bolt is screwed into the threaded hole 11 corresponding to the turntable assembly so as to lock the measuring instrument at the current position.

When the height position of the measuring instrument needs to be adjusted, an operator rotates the knob 23 to adjust the height of the supporting device.

Example 2

The embodiment is a further improvement to the technical scheme of embodiment 1, as shown in fig. 6, the circumferential adjustment assembly of the embodiment comprises a workbench 8 and a spherical cradle head, one end of the spherical cradle head is connected with the workbench 8, the other end of the spherical cradle head is fixedly connected with the screw rod 6, and the workbench 8 is used for supporting a measuring instrument. Specifically, the spherical tripod head can adopt a K888 spherical damping tripod head, and a locking component is arranged on the spherical damping tripod head so as to lock the rotation position of the measuring instrument. According to the embodiment, the spherical damping cradle head is arranged to rotate the measuring instrument up and down by 360 degrees left and right, so that the adjustment convenience is further improved.

The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model, and it is intended that the appended claims be interpreted as covering all equivalent modifications and variations as fall within the true spirit and scope of the utility model.

Claims (10)

1. The utility model provides an adjustable support device for measuring apparatu, its characterized in that includes fixed station (1), rotates to be connected circumference adjustment subassembly on fixed station (1) and install first high adjustment subassembly under fixed station (1), measuring instrument installs circumference adjustment subassembly is last, first high adjustment subassembly includes screw rod (6), sleeve subassembly and stopper (3), the upper end of screw rod (6) with fixed station (1) bottom fixed connection, the lower extreme of screw rod (6) stretches into sleeve subassembly, screw rod (6) with sleeve subassembly threaded connection, stopper (3) fixed connection is in sleeve subassembly upper end, be equipped with spout (7) on screw rod (6) outer wall, stopper (3) sliding connection is in spout (7), when sleeve subassembly rotates, sleeve subassembly drive screw rod (6) are followed sleeve subassembly carries out elevating movement.

2. The adjustable support device for a measuring instrument according to claim 1, wherein the sleeve assembly comprises a first sleeve (2), a second sleeve (4) and a first rotating shaft (5), the inner wall of the second sleeve (4) is in threaded connection with the screw (6), the upper end of the first rotating shaft (5) is connected with the bottom of the second sleeve (4), the lower end of the first rotating shaft (5) is rotatably connected to the inner bottom wall of the first sleeve (2), and the second sleeve (4) is rotatably connected to the first sleeve (2).

3. The adjustable support device for a measuring instrument according to claim 2, wherein the first height adjusting assembly further comprises a hand wheel assembly and a bevel gear assembly, the bevel gear assembly comprises a first bevel gear (19) and a second bevel gear (20), the second bevel gear (20) is sleeved on the first rotating shaft (5), the second bevel gear (20) is meshed with the first bevel gear (19), the first bevel gear (19) is connected with the hand wheel assembly, and the hand wheel assembly is used for driving the bevel gear assembly to rotate.

4. An adjustable support device for a measuring instrument according to claim 3, characterized in that a first bevel gear (19) is arranged in the first sleeve (2), the hand wheel assembly comprises a second rotating shaft (21) which is horizontally arranged, one end of the second rotating shaft (21) extends into the inner cavity of the first sleeve (2) and is connected with the first bevel gear (19), and the second rotating shaft (21) is rotatably connected with the first sleeve (2).

5. The adjustable support device for a measuring instrument according to claim 1, wherein the circumferential adjustment assembly comprises a workbench (8) and a third rotating shaft (9), the lower end of the third rotating shaft (9) is rotatably connected to the upper side of the fixed table (1), the upper end of the third rotating shaft (9) is connected to the workbench (8), and the workbench (8) is used for installing the measuring instrument.

6. The adjustable supporting device for the measuring instrument according to claim 5, wherein the circumferential adjustment assembly further comprises a clamping ring (10) and a limiting assembly, the clamping ring (10) is sleeved on the third rotating shaft (9), a plurality of threaded holes (11) which are distributed at intervals are formed in the outer side wall of the clamping ring (10), the limiting assembly comprises a support plate (12) and a connecting piece (13), one end outer wall of the support plate (12) is connected with the fixed table (1), and the connecting piece (13) penetrates through the other end of the support plate (12) and is detachably connected with the threaded holes (11).

7. The adjustable support device for a measuring instrument according to claim 1, further comprising a second height adjustment assembly mounted on an underside of the first height adjustment assembly.

8. The adjustable support device for a measuring instrument according to claim 7, wherein the second height adjusting assembly comprises a folding bracket assembly, the folding bracket assembly comprises a support plate (14), a vertical rod (15) and a plurality of telescopic struts (16), the support plate (14) is connected to the bottom of the first height adjusting assembly, the bottom of the support plate (14) is connected to the vertical rod (15), the plurality of struts (16) are distributed at intervals along the circumference of the vertical rod (15), and one end of the plurality of struts (16) close to the first height adjusting assembly is hinged to the support plate (14).

9. The adjustable supporting device for the measuring instrument according to claim 8, wherein the folding bracket assembly further comprises a connecting rod (18) and a sliding sleeve (17), the sliding sleeve (17) is slidably sleeved on the outer wall of the upright (15), the connecting rod (18) is connected between the sliding sleeve (17) and the supporting rod (16), and two ends of the connecting rod (18) are respectively hinged with the sliding sleeve (17) and the supporting rod (16).

10. The adjustable support device for a measuring instrument according to claim 1, wherein the circumferential adjustment assembly comprises a workbench (8) and a spherical head, the upper end of the spherical head is connected with the workbench (8), the lower end of the spherical head is connected with the first height adjustment assembly, and the workbench (8) is used for installing the measuring instrument.