CN215488839U

CN215488839U - Adjustable tripod supporting structure

Info

Publication number: CN215488839U
Application number: CN202121083123.8U
Authority: CN
Inventors: 杨波; 沈晓伟; 姜华
Original assignee: Suzhou Zhonggang Construction Co ltd
Current assignee: Suzhou Zhonggang Construction Co ltd
Priority date: 2021-05-20
Filing date: 2021-05-20
Publication date: 2022-01-11
Anticipated expiration: 2031-05-20

Abstract

The utility model relates to a tripod bearing structure with adjustable belongs to the technical field of support frame, and it includes locating lever and bracing piece, be fixed with the mount table that is used for installing the instrument on the locating lever, the locating lever with be provided with auxiliary positioning subassembly between the bracing piece, auxiliary positioning subassembly including install in install bin on the locating lever, set up in plummet in the install bin, the bracing piece including articulate in dead lever on the install bin and wear to locate in the dead lever and with dead lever screw-thread fit's carriage release lever. This application has the effect that makes things convenient for operating personnel to aim at instrument and measuring point, improves work efficiency.

Description

Adjustable tripod supporting structure

Technical Field

The application relates to the field of support frames, in particular to an adjustable tripod support structure.

Background

When many measuring instruments in construction engineering are used, operators usually use a tripod to improve the stability of the instruments and the accuracy of the measurement.

In the related art, chinese utility model patent with publication number CN205079004U discloses a tripod, comprising a base and three supporting leg pipes which are coupled to the outer side of the base and are uniformly distributed, wherein a spherical cavity is arranged at the center of the base, a turntable assembly is arranged above the base, and a locking piece and a knob are arranged below the base; the upper surface of the locking sheet is matched with the lower surface of the base in size; the rotary table assembly comprises a rotary table, a spherical rotary body and an annular limiting ring, the rotary body is fixedly connected with the bottom of the rotary table, the limiting ring is sleeved on the upper part of the rotary body, the inner diameter of the limiting ring is smaller than the outer diameter of the rotary body, the limiting ring is fixedly connected with the base, and the rotary body is positioned in the concave cavity; the knob comprises a rotary disc, a pressing rod and a screw rod which are fixedly connected in sequence, and the outer diameter of the pressing rod is larger than that of the screw rod; the screw rod of the knob sequentially passes through the locking sheet, the base, the rotating body and the turntable and is respectively in threaded connection with the locking sheet, the base, the rotating body and the turntable.

In view of the above related art, the inventor believes that when a measurement point is specified, an operator needs to keep the instrument horizontal, and a central point at the bottom of the instrument is aligned with the measurement point, and the operator often needs to adjust a tripod many times to align the instrument with the measurement point, which has a defect of low working efficiency.

SUMMERY OF THE UTILITY MODEL

For the operating personnel aims at instrument and measuring point in order to make things convenient for, improve work efficiency, this application provides a tripod bearing structure with adjustable.

The application provides a tripod bearing structure with adjustable adopts following technical scheme:

the utility model provides a tripod bearing structure with adjustable, includes locating lever and bracing piece, be fixed with the mount table that is used for installing the instrument on the locating lever, the locating lever with be provided with auxiliary positioning subassembly between the bracing piece, auxiliary positioning subassembly including install in install the install bin on the locating lever, set up in plummet in the install bin, the bracing piece including articulate in dead lever on the install bin and wear to locate in the dead lever and with dead lever screw-thread fit's carriage release lever.

Through adopting above-mentioned technical scheme, operating personnel installs the instrument on the mount table earlier, and then, operating personnel aligns the locating lever and measures the vertical placing of point, and operating personnel installs the install bin on the locating lever again. Operating personnel stretches out a fixed section of thick bamboo suitable distance through rotatory carriage release lever, and the one end and the ground butt of install bin are kept away from to the carriage release lever to the support bar plays the supporting role to the install bin, guarantees bearing structure's stability. The operator reuses the plumb to adjust the positioning rod, so that the positioning rod is kept in a vertical state. The arrangement of the positioning rod and the supporting rod facilitates operators to quickly align the instrument and the measuring point, and the working efficiency is improved.

Preferably, the positioning rod comprises a fixing rod, an installation rod arranged at the upper end of the fixing rod, and a butt rod arranged at the lower end of the fixing rod, the butt rod penetrates through the fixing rod and is in sliding fit with the fixing rod, and a limiting assembly used for fixing the butt rod is arranged on the fixing rod.

Through adopting above-mentioned technical scheme, the dead lever and the setting of butt joint pole make things convenient for operating personnel to adjust the whole length of locating lever, are favorable to improving bearing structure's suitability, and the setting of spacing subassembly makes things convenient for the distance that the fixed butt joint pole of operating personnel stretches out the dead lever.

Preferably, a plurality of locating holes are formed in the abutting rod, the locating holes are evenly distributed along the length direction of the abutting rod, the limiting assembly comprises a pull rod which is arranged on the fixed rod in a penetrating mode and matched with the locating holes in an inserting mode, a fixed disk fixed on the pull rod, and a first spring sleeved on the pull rod, one end of the first spring is fixedly connected with the fixed disk, and the other end of the first spring is fixedly connected with the fixed rod.

Through adopting above-mentioned technical scheme, operating personnel pulls the fixed disk, and the fixed disk removes and drives the pull rod removal, thereby the pull rod breaks away from the locating hole and removes the locking to the butt joint pole, and at this moment, first spring is in tensile state. The pull rod is loosened after the abutting rod is pulled out by a proper distance by an operator, and the pull rod is in inserted connection with the abutting rod again through the positioning hole under the action of the elastic force of the first spring.

Preferably, a limiting block is fixed on the butt-joint rod, a limiting groove is formed in the inner side wall of the fixing rod, and the limiting block is arranged in the limiting groove and matched with the inner side wall of the limiting groove in a sliding mode.

Through adopting above-mentioned technical scheme, the cooperation of stopper and spacing groove is favorable to restricting the rotation of butt joint pole to make things convenient for pull rod and butt joint pole grafting cooperation.

Preferably, the dead lever with be provided with runner assembly between the installation pole, runner assembly including rotate the case, wear to locate rotate the incasement and with rotate case normal running fit's worm, set up in rotate the incasement and with worm intermeshing's worm wheel, be fixed in hand wheel on the worm, the installation pole is worn to locate rotate the incasement and with it is connected to rotate the case rotation, the fixed cover of worm wheel is located on the installation pole.

Through adopting above-mentioned technical scheme, operating personnel rotates the hand wheel, and the hand wheel rotates and drives the worm and rotate, rotates thereupon with worm intermeshing's worm wheel, and the worm wheel rotates and drives the installation pole and rotate, and the installation pole rotates and drives the instrument and rotate to make things convenient for operating personnel to adjust the instrument just right direction.

Preferably, an inserting plate is fixed on the installation box, a slot used for being matched with the inserting plate in an inserting mode is formed in the rotating box, a positioning pin penetrates through the rotating box, and the positioning pin penetrates through the inserting plate and is in threaded fit with the inserting plate.

Through adopting above-mentioned technical scheme, the cooperation of picture peg and slot makes things convenient for operating personnel to be connected the install bin with the rotation case, and being provided with of locating pin does benefit to the stability that improves the install bin and rotate the case and be connected.

Preferably, offer on the install bin and be used for accomodating the holding tank of plummet, be provided with storage assembly in the install bin, storage assembly includes the runner, is fixed in on the runner and wear to locate dwang, cover on the install bin are located first bevel gear on the dwang, rotate install in connecting rod and fixed cover on the holding tank inside wall are located on the connecting rod and with first bevel gear intermeshing's second bevel gear, the dwang with the install bin rotates to be connected, be fixed with the silk thread on the plummet, the silk thread keep away from the one end of plummet with connecting rod fixed connection.

Through adopting above-mentioned technical scheme, operating personnel rotates the runner, and the runner rotates and drives the dwang and rotate, and the dwang rotates and makes first bevel gear rotate, rotates thereupon with first bevel gear intermeshing's second bevel gear, and second bevel gear rotates and makes the connecting rod rotate, and the connecting rod rotates and makes the silk thread emit or twine to make things convenient for operating personnel to remove the plummet, the setting of holding tank makes things convenient for operating personnel to accomodate the plummet.

Preferably, be provided with closed subassembly on the install bin, the guide way has been seted up on the inside wall of holding tank, closed subassembly including slide set up in closed board on the guide way inside wall, be fixed in fixed plate on the closed board, set up in the guide way and with fixed plate fixed connection's second spring, the second spring with the inside wall fixed connection of guide way.

Through adopting above-mentioned technical scheme, operating personnel removes the fixed plate, and the fixed plate removes to drive the closure plate and removes along the guide way, and at this moment, the holding tank is opened, and the second spring is in compression state. When the fixed plate is loosened by an operator, the closing plate resets under the action of the elastic force of the second spring, so that the accommodating groove is closed, and the closing assembly is favorable for preventing the plumb from dropping and losing.

In summary, the present application includes at least one of the following beneficial technical effects:

the movable rod plays a supporting role for the installation box, and the stability of the supporting structure is ensured. An operator adjusts the positioning rod by using the plumb bob, so that the positioning rod is kept in a vertical state, the positioning rod and the supporting rod are arranged, the operator can conveniently and quickly align an instrument and a measuring point, and the working efficiency is improved;

the fixed disc, the pull rod and the first spring are arranged, so that an operator can conveniently adjust the length of the abutting rod extending out of the fixed rod, the length of the whole positioning rod can be adjusted, and the applicability of the supporting structure can be improved;

operating personnel rotates the runner, and the runner rotates and drives the dwang and rotate, and the dwang rotates and makes first bevel gear rotate, rotates thereupon with first bevel gear intermeshing's second bevel gear, and second bevel gear rotates and makes the connecting rod rotate, and the connecting rod rotates and makes the silk thread emit or twine to make things convenient for operating personnel to remove the plummet, the setting of holding tank makes things convenient for operating personnel to accomodate the plummet.

Drawings

FIG. 1 is a schematic structural view of an adjustable tripod support structure according to an embodiment of the present application.

FIG. 2 is a schematic view of the internal structure of an adjustable tripod support structure according to an embodiment of the present application.

Description of reference numerals: 1. positioning a rod; 11. fixing the rod; 111. a limiting groove; 12. mounting a rod; 13. A butting rod; 131. positioning holes; 132. a limiting block; 2. a support bar; 21. fixing the rod; 22. a travel bar; 3. an installation table; 4. an auxiliary positioning assembly; 41. installing a box; 411. inserting plates; 412. accommodating grooves; 413. a guide groove; 414. fixing the sleeve; 415. a moving block; 415. a cavity; 42. a plumb bob; 421. a silk thread; 5. a limiting component; 51. a pull rod; 52. fixing the disc; 53. a first spring; 6. a rotating assembly; 61. a rotating box; 611. a slot; 612. positioning pins; 62. a worm; 63. a worm gear; 64. a hand wheel; 7. a closure assembly; 71. a closing plate; 72. a fixing plate; 73. a second spring; 8. a receiving assembly; 81. a rotating wheel; 82. rotating the rod; 83. a first bevel gear; 84. a connecting rod; 85. a second bevel gear.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses tripod bearing structure with adjustable. Referring to fig. 1 and 2, the adjustable tripod supporting structure includes a positioning rod 1, a supporting rod 2 and an auxiliary positioning assembly 4.

Referring to fig. 1 and 2, the fixing rod 1 includes a fixing rod 11, an installation rod 12 and a butt rod 13, the fixing rod 11 is in a circular cylinder shape, the fixing rod 11 is vertically arranged, one end of the fixing rod 11 is open, and the other end of the fixing rod 11 is closed. The pole 13 is vertical to be set up, and the cross section of pole 13 is circular, and 13 one end of butt pole is coniform, and the 13 other ends of butt pole set up in the open end of dead lever 11, and the axis of butt pole 13 coincides with the axis of dead lever 11, and the inside wall cooperation of sliding of butt pole 13 and dead lever 11. A limiting block 132 is fixed on the circumferential surface of the abutting rod 13, and the cross section of the limiting block 132 is rectangular. The inner side wall of the fixing rod 11 is provided with a limiting groove 111, the opening of the limiting groove 111 is rectangular, and the length direction of the limiting groove 111 is consistent with the length direction of the fixing rod 11. The limiting block 132 is disposed in the limiting groove 111 of the fixing rod 11, and the limiting block 132 is slidably engaged with the inner sidewall of the limiting groove 111.

Referring to fig. 1 and 2, a limiting assembly 5 is arranged between the abutting rod 13 and the fixing rod 11, the limiting assembly 5 includes a pull rod 51, a fixing disc 52 and a first spring 53, the pull rod 51 is arranged on the fixing rod 11 in a penetrating manner, the pull rod 51 is connected with the fixing rod 11 in a sliding manner, and the pull rod 51 penetrates through one end of the fixing rod 11 to be matched with the abutting rod 13 in a plugging manner. The fixing plate 52 is disc-shaped, the fixing plate 52 is disposed at one end of the pull rod 51 far away from the abutting rod 13, and the side surface of the fixing plate 52 close to the fixing rod 11 is fixedly connected with the pull rod 51. The first spring 53 is sleeved on the pull rod 51, one end of the first spring 53 is fixedly connected with the fixed disc 52, and the other end of the first spring 53 is fixedly connected with the circumferential surface of the fixed bar 11. The circumferential surface of the abutting rod 13 is provided with a positioning hole 131 for being in plug-in fit with the pull rod 51, the opening of the positioning hole 131 is circular, the positioning holes 131 are provided in a plurality, and the positioning holes 131 are uniformly arranged along the length direction of the abutting rod 13. When an operator needs to adjust the length of the positioning rod 1, the operator pulls the fixed disc 52, the fixed disc 52 moves to drive the pull rod 51 to be separated from the positioning hole 131, the first spring 53 is in a stretching state, the operator stretches the abutting rod 13 out of the fixing rod 11 by a proper length, the operator loosens the fixed disc 52, and the pull rod 51 is in splicing fit with the abutting rod 13 again through the positioning hole 131 under the elastic force action of the first spring 53.

Referring to fig. 1 and 2, the mounting rod 12 is cylindrical, the mounting rod 12 is vertically arranged, the mounting table 3 is fixed at the upper end of the mounting rod 12, the rotating assembly 6 is arranged between the mounting rod 12 and the fixing rod 11, and the rotating assembly 6 comprises a rotating box 61, a worm 62, a worm wheel 63 and a hand wheel 64. The rotating box 61 is a hollow cuboid, the bottom surface of the rotating box 61 is fixedly connected with the upper surface of the fixed rod 11, the installation rod 12 penetrates through the rotating box 61, and the bottom surface of the installation rod 12 is rotatably connected with the inner bottom surface of the rotating box 61. The worm 62 is arranged in the rotating box 61 in a penetrating way, and the worm 62 is connected with the rotating box 61 in a rotating way. The worm wheel 63 is sleeved on the mounting rod 12, the worm wheel 63 is fixedly connected with the mounting rod 12, the worm wheel 63 is in threaded fit with the worm 62, and the hand wheel 64 is fixed at the end part, far away from the worm wheel 63, of the worm 62. An operator rotates the hand wheel 64, the hand wheel 64 rotates to drive the worm 62 to rotate, the worm 62 rotates to drive the worm wheel 63 to rotate, the worm wheel 63 rotates to enable the installation rod 12 to rotate, the installation rod 12 rotates to enable the installation table 3 to rotate, and the installation table 3 rotates to enable an instrument fixed on the installation table 3 to rotate.

Referring to fig. 1 and 2, the auxiliary positioning assembly 4 includes a mounting box 41 and a plumb bob 42, the mounting box 41 is a rectangular parallelepiped, an insertion plate 411 is fixed on a side surface of the mounting box 41 close to the rotating box 61, and the cross section of the insertion plate 411 is rectangular. The side of the rotating box 61 close to the mounting box 41 is provided with a slot 611, the opening of the slot 611 is rectangular, and the inserting plate 411 is disposed in the slot 611 and slidably engaged with the inner side wall of the slot 611. A positioning pin 612 penetrates through the rotating box 61, and the positioning pin 612 penetrates through the inserting plate 411 and is in threaded fit with the inserting plate 411. The support rod 2 comprises a fixed cylinder 21 and a moving rod 22, the fixed cylinder 21 is in a circular cylinder shape, the closed end of the fixed cylinder 21 is hinged to the bottom surface of the installation box 41, the moving rod 22 is arranged in the open end of the fixed cylinder 21, and the moving rod 22 is in threaded fit with the fixed cylinder 21. The two support rods 2 are arranged, and the two support rods 2 are symmetrically arranged.

Referring to fig. 1 and 2, a storage assembly 8 is arranged in the installation box 41, the storage assembly 8 includes a rotating wheel 81, a rotating rod 82, a first bevel gear 83, a connecting rod 84 and a second bevel gear 85, the rotating rod 82 is fixed on the rotating wheel 81, the rotating rod 82 is vertically arranged, the rotating rod 82 is arranged in the installation box 41 in a penetrating manner, and the rotating rod 82 is rotatably connected with the installation box 41. A cavity 415 is formed in the installation box 41, the cross section of the cavity 415 is rectangular, the first bevel gear 83 is arranged in the cavity 415 of the installation box 41, the rotating rod 82 is sleeved with the first bevel gear 83, and the first bevel gear 83 is fixedly connected with the rotating rod 82. A receiving groove 412 for receiving the plumb bob 42 is formed in the bottom surface of the mounting case 41, and the cross section of the receiving groove 412 is rectangular. Connecting rod 84 level setting, connecting rod 84 one end and the inside wall of holding tank 412 rotate to be connected, and the connecting rod 84 other end extends to in the cavity 415, and connecting rod 84 rotates with install bin 41 to be connected. The second bevel gear 85 is disposed in the cavity 415 of the mounting box 41, the second bevel gear 85 is sleeved on the connecting rod 84, the second bevel gear 85 is fixedly connected with the connecting rod 84, and the second bevel gear 85 is engaged with the first bevel gear 83. The plumb bob 42 is provided with a silk thread 421, one end of the silk thread 421 is fixedly connected with the center of the circle of the circular surface of the plumb bob 42, and the other end of the silk thread 421 winds on the connecting rod 84 and is fixedly connected with the connecting rod 84. An operator rotates the rotating wheel 81, the rotating wheel 81 rotates to drive the rotating rod 82 to rotate, the rotating rod 82 rotates to drive the first bevel gear 83 to rotate, the first bevel gear 83 rotates to drive the second bevel gear 85 to rotate, the second bevel gear 85 rotates to drive the connecting rod 84 to rotate, the connecting rod 84 rotates to enable the silk thread 421 to be wound, and finally the plumb bob 42 is enabled to be released or recovered.

Referring to fig. 1 and 2, a fixing sleeve 414 is fixed on the inner side wall of the accommodating groove 412 far away from the rotating box 61, one end of the fixing sleeve 414 is closed, the other end of the fixing sleeve 414 is open, the fixing sleeve 414 is vertically arranged, the open end of the fixing sleeve 414 faces downward, and the outer side wall of the fixing sleeve 414 is fixedly connected with the inner side wall of the accommodating groove 412. A moving block 415 is installed in the fixed sleeve 414, the moving block 415 is disposed in the open end of the fixed sleeve 414, and the side wall of the moving block 415 is in sliding fit with the inner side wall of the fixed sleeve 414.

Referring to fig. 1 and 2, a guide groove 413 is formed on an inner side wall of the receiving groove 412, an opening of the guide groove 413 is rectangular, and a length direction of the guide groove 413 is identical to a length direction of the mounting case 41. The installation box 41 is provided with a closing component 7, the closing component 7 comprises a closing plate 71, a fixing plate 72 and a second spring 73, the closing plate 71 is rectangular plate-shaped, the closing plate 71 is arranged in the guide groove 413, and the closing plate 71 is matched with the inner side wall of the guide groove 413 in a sliding manner. The fixed plate 72 is disposed on a side of the closing plate 71 close to the rotating box 61, and the fixed plate 72 and the closing plate 71 are fixedly connected to each other. The second spring 73 is disposed in the guide groove 413, one end of the second spring 73 is fixedly connected to the closing plate 71, and the other end of the second spring 73 is fixedly connected to an inner end surface of the guide groove 413. When an operator moves the fixed plate 72, the fixed plate 72 moves to drive the closing plate 71 to move, the second spring 73 is in a compressed state at the moment, the moving block 415 slides out of the fixed sleeve 414, when the operator loosens the fixed plate 72, the closing plate 71 moves towards the direction of the rotating box 61 under the elastic action of the second spring 73, and the moving block 415 is abutted to the fixed plate 72 to block the closing plate 71 to move, so that the plumb bob 42 is conveniently released by the operator. When the operator pushes the moving block 415 upward until the moving block does not abut against the fixed plate 72, the closing plate 71 is reset by the elastic force of the second spring 73.

The implementation principle of an adjustable tripod supporting structure in the embodiment of the application is as follows: an operator pulls the fixed disc 52 first, the fixed disc 52 moves to enable the pull rod 51 to be separated from the positioning hole 131, the operator moves the abutting rod 13 by a proper length, the operator releases the pull rod 51, and the pull rod 51 is plugged and matched with the abutting rod 13 again under the elastic force of the first spring 53. The operator installs the instrument on the mounting table 3 again, and then, the operator aligns the locating lever 1 with the measuring point and vertically places, and the operator installs the installation box 41 on the rotation box 61 by using the inserting plate 411 and the locating pin 612 again. An operator extends out of the fixed cylinder 21 for a proper distance by rotating the movable rod 22, and one end, far away from the installation box 41, of the movable rod 22 is abutted to the ground, so that the movable rod 22 supports the installation box 41, and the stability of the supporting structure is guaranteed.

The operator moves the fixed plate 72, the fixed plate 72 moves to drive the closing plate 71 to move, the closing plate 71 moves to open the accommodating groove 412, and then the operator pulls out the moving block 415 to abut against the fixed plate 72, so that the closing plate 71 is prevented from being reset under the action of the second spring 73. The operator rotates the rotating wheel 81 again, the rotating wheel 81 drives the rotating rod 82 to rotate, the rotating rod 82 rotates to finally rotate the connecting rod 84, the connecting rod 84 rotates to pay out the silk thread 421 wound on the connecting rod 84, and the plumb bob 42 moves out of the accommodating groove 412. The operator adjusts the securing lever 1 using the plumb bob 42 so that the securing lever 1 is kept in the upright state. The arrangement of the positioning rod 1 and the supporting rod 2 facilitates operators to quickly align instruments and measuring points, and the working efficiency is improved. An operator rotates the hand wheel 64, the hand wheel 64 rotates to drive the worm 62 to rotate, the worm 62 rotates to enable the worm wheel 63 to rotate, the worm wheel 63 rotates to enable the mounting rod 12 to rotate, and finally the operator can adjust the orientation of an instrument on the mounting table 3 conveniently.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. An adjustable tripod supporting structure, which is characterized in that: including locating lever (1) and bracing piece (2), be fixed with mount table (3) that are used for installing the instrument on locating lever (1), locating lever (1) with be provided with auxiliary positioning subassembly (4) between bracing piece (2), auxiliary positioning subassembly (4) including install in install bin (41) on locating lever (1), set up in plummet (42) in install bin (41), bracing piece (2) including articulate in fixed section of thick bamboo (21) on install bin (41) and wear to locate in dead lever (11) and with dead lever (11) screw-thread fit's carriage release lever (22).

2. An adjustable tripod support structure according to claim 1, wherein: the positioning rod (1) comprises a fixing rod (11), an installation rod (12) arranged at the upper end of the fixing rod (11) and a butt rod (13) arranged at the lower end of the fixing rod (11), the butt rod (13) penetrates through the fixing rod (11) and is in sliding fit with the fixing rod (11), and a limiting component (5) used for fixing the butt rod (13) is arranged on the fixing rod (11).

3. An adjustable tripod support structure according to claim 2, wherein: the utility model discloses a spacing subassembly, including butt and connect pole (13), locating hole (131) have been seted up on butt and connect pole (13), locating hole (131) are followed the length direction of butt and connect pole (13) evenly arranges, spacing subassembly (5) including set up in wear to locate on dead lever (11) and with locating hole (131) grafting complex pull rod (51), be fixed in fixed disk (52) on pull rod (51), cover are located first spring (53) on pull rod (51), first spring (53) one end with fixed disk (52) fixed connection, first spring (53) the other end with dead lever (11) fixed connection.

4. An adjustable tripod support structure according to claim 2, wherein: the limiting rod (13) is fixedly provided with a limiting block (132), the inner side wall of the fixing rod (11) is provided with a limiting groove (111), and the limiting block (132) is arranged in the limiting groove (111) and is in sliding fit with the inner side wall of the limiting groove (111).

5. An adjustable tripod support structure according to claim 2, wherein: dead lever (11) with be provided with rotating assembly (6) between installation pole (12), rotating assembly (6) including rotate case (61), wear to locate rotate in case (61) and with rotate case (61) normal running fit's worm (62), set up in rotate in case (61) and with worm (62) intermeshing's worm wheel (63), be fixed in hand wheel (64) on worm (62), installation pole (12) wear to locate rotate in case (61) and with it connects to rotate case (61) rotation, worm wheel (63) fixed cover is located on installation pole (12).

6. An adjustable tripod support structure according to claim 5, wherein: be fixed with picture peg (411) on install bin (41), seted up on rotatory case (61) be used for with picture peg (411) grafting complex slot (611), wear to be equipped with locating pin (612) on rotatory case (61), locating pin (612) pass picture peg (411) and with picture peg (411) screw-thread fit.

7. An adjustable tripod support structure according to claim 6, wherein: the mounting box (41) is provided with a containing groove (412) for containing the plumb bob (42), a containing component (8) is arranged in the installation box (41), the containing component (8) comprises a rotating wheel (81), a rotating rod (82) fixed on the rotating wheel (81) and penetrating through the installation box (41), a first bevel gear (83) sleeved on the rotating rod (82), a connecting rod (84) rotatably installed on the inner side wall of the containing groove (412), and a second bevel gear (85) fixedly sleeved on the connecting rod (84) and meshed with the first bevel gear (83), the rotating rod (82) is rotatably connected with the installation box (41), a silk thread (421) is fixed on the plumb bob (42), one end of the silk thread (421) far away from the plumb bob (42) is fixedly connected with the connecting rod (84).

8. An adjustable tripod support structure according to claim 7, wherein: be provided with closed subassembly (7) on install bin (41), guide way (413) have been seted up on the inside wall of holding tank (412), closed subassembly (7) including slide set up in closing board (71) on guide way (413) inside wall, be fixed in fixed plate (72) on closing board (71), set up in guide way (413) and with fixed plate (72) fixed connection's second spring (73), second spring (73) with the inside wall fixed connection of guide way (413).