CN218208747U

CN218208747U - Tripod for engineering detection

Info

Publication number: CN218208747U
Application number: CN202222499888.0U
Authority: CN
Inventors: 王源珠; 钱亚荣
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-09-21
Filing date: 2022-09-21
Publication date: 2023-01-03
Anticipated expiration: 2032-09-21

Abstract

The utility model relates to an engineering detection tripod, which comprises a first adjusting device for adjusting the horizontal rotation angle of a camera, a second adjusting device for adjusting the vertical rotation angle of the camera, a bearing plate for bearing the camera and a tripod base for supporting the first adjusting device; the first adjusting device is arranged on the tripod base; the second adjusting device is arranged on the first adjusting device; the bearing plate is arranged on the second adjusting device. The problem that when the tripod head is adjusted, unidirectional movement cannot be performed in pitching and left-right directions, and a camera cannot be finely adjusted is solved.

Description

Tripod for engineering detection

Technical Field

The utility model relates to a tripod especially relates to an engineering detects tripod.

Background

The tripod head is used in conjunction with a tripod and is used for adjusting the angle of a camera. During the use, need install the tripod cloud platform earlier on the tripod, then install the camera on the tripod cloud platform again. The tripod can provide a stable, height-adjustable support for the camera, while the tripod head provides 360-degree horizontal rotation and a certain degree of declination and elevation for the camera.

At present, a spherical tripod head is a common tripod head and structurally comprises a shell, wherein an opening is formed in the upper part of the shell, and a spherical joint for connecting a camera is arranged in the opening; a rotatable chassis is arranged at the lower part of the shell, and a mounting hole for connecting with a tripod is formed in the middle of the chassis; three knobs are typically provided on the outer surface of the housing: the first is a Locking (LOCK) knob responsible for fastening the rotation, the inclination and the pitching of the holder, the second is a damping (FRICTION) knob responsible for changing the tightness of the holder during movement, and the third is a 360-degree rotation (PAN) locking knob responsible for locking a 360-degree rotatable chassis of the holder.

In the prior art, the tripod head can move to any angle due to the spherical joint, but the tripod head cannot move in a single direction only in pitching and left-right directions, and the adjustment action cannot be completed immediately due to an overlarge adjustment angle during adjustment.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides an engineering detection tripod, has solved among the prior art tripod cloud platform and can not only carry out the unilateral motion on every single move, left and right sides.

The technical scheme adopted by the embodiment of the application is as follows.

The engineering detection tripod comprises a first adjusting device for adjusting the horizontal rotation angle of the camera, a second adjusting device for adjusting the vertical rotation angle of the camera, a bearing plate for bearing the camera and a tripod base for supporting the first adjusting device; the first adjusting device is arranged on the tripod base; the second adjusting device is arranged on the first adjusting device; the bearing plate is arranged on the second adjusting device.

The further technical scheme is as follows: the first adjusting device comprises a first shell, a first connecting block connected with the second adjusting device, a first adjusting piece for adjusting the rotating angle of the first connecting block and a supporting column for rotating the first adjusting piece in the first shell; the support column is arranged in the first shell; the first adjusting piece is movably arranged in the first shell; the first adjusting piece is movably connected with the supporting column; the first connecting block is fixedly connected with the first adjusting piece; the first connecting block penetrates through the first shell and is fixedly connected with the second adjusting device.

The further technical scheme is as follows: the second adjusting device comprises a second shell connected to the first connecting block, a second adjusting piece for adjusting the bearing plate to rotate vertically, a fixing assembly for fixing the angle of the second adjusting piece, and a second connecting block for arranging the bearing plate on the second adjusting piece; the second shell is fixedly connected with the first connecting block; the second adjusting piece is arranged in the second shell; the fixing component penetrates through the second shell and is arranged on the second adjusting piece; the second connecting block is arranged on the second adjusting piece; the bearing plate is arranged on the second connecting block.

The further technical scheme is as follows: the first adjusting piece comprises a worm wheel and a worm for controlling the rotation angle of the worm wheel; the worm wheel is fixedly connected with the first connecting block, and the worm penetrates through the first shell and is in transmission connection with the worm wheel; one end of the worm is rotationally connected with the first shell, and the other end of the worm is provided with a first knob; the first knob is coaxially and fixedly connected with the worm.

The further technical scheme is as follows: the second adjusting piece comprises a first bevel gear, an adjusting rod for adjusting the angle of the first bevel gear, a second bevel gear for controlling the rotating angle of the second connecting block and a guide rod for guiding the rotation of the second connecting block; the adjusting rod penetrates through the second shell; one end of the adjusting rod is rotatably connected with the second shell, and the other end of the adjusting rod is provided with a second knob; the second knob is coaxially and fixedly connected with the adjusting rod; the first bevel gear is sleeved on the adjusting rod; the second bevel gear is rotatably connected in the second shell; the first bevel gear is in transmission connection with the second bevel gear; the guide rod with second bevel gear fixed connection just the guide rod wears to locate the second shell.

The further technical scheme is as follows: the upper surface of the first shell is provided with first scale marks; a pointing piece is arranged on the side surface of the first connecting block; the first scale marks are uniformly arranged along the circumference of the rotating direction of the pointing piece; the pointing member points to the first graduation mark.

The further technical scheme is as follows: a first arc-shaped groove is formed in one side face of the second shell, and a second arc-shaped groove is formed in the other side face of the second shell; the fixing assembly is slidably positioned in the first arc-shaped groove, and the guide rod is slidably positioned in the second arc-shaped groove; a second scale mark is arranged on the outer side surface of the second arc-shaped groove; the second scale marks are uniformly arrayed along the rotation direction of the second bevel gear; one side of the guide rod is fixedly connected with the second bevel gear, and the other side of the guide rod is provided with an arrow which faces the second scale mark.

The further technical scheme is as follows: the fixing component comprises a bolt connected to the first bevel gear and a nut in threaded connection with the bolt; the bolt is positioned in the first arc-shaped groove to slide; the nut presses the side of the second housing.

The further technical scheme is as follows: and the guide rod is sleeved with a spool, and the spool is positioned in the second arc-shaped groove to slide.

The further technical scheme is as follows: and 3 groups of supporting rods are arranged on the tripod base.

One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

1. because the first adjusting device is adopted to control the rotation in the horizontal direction, and the second adjusting device is adopted to control the rotation in the vertical direction, the tripod head can not only move in the pitching and left-right directions in a single direction, and the rotation in the pitching and left-right directions can be accurately adjusted through the first adjusting device and the second adjusting device.

2. Because the first adjusting piece is the worm gear, the problem that deviation exists during rotation is effectively solved, and then the accuracy is higher during horizontal rotation.

3. Because the second adjusting part is in transmission connection with 2 groups of first bevel gears and 2 groups of second bevel gears, the problem that the second bevel gears shake during rotation is effectively solved, and the vertical rotation precision is higher.

4. Because the fixing assembly is arranged on the side face of the second bevel gear and compresses the side face of the second shell, the problem that the vertical rotation angle of the camera can be fixed is effectively solved, and the rotation angle of the camera is controlled.

5. Owing to adopted first scale mark and second scale mark, so, effectively solved to have meticulous control to the angle of rotation, and then realized more meticulous to the rotation of the vertical of camera, horizontal direction.

6. Due to the adoption of the spool, the problem that the second arc-shaped groove falls off when the second bevel gear rotates is effectively solved, and the front position and the rear position of the second bevel gear are fixed.

Drawings

Fig. 1 is a schematic structural view of an engineering detection tripod according to a first embodiment of the present invention;

fig. 2 is a schematic structural diagram of a front side of an adjusting assembly according to a first embodiment of the present invention;

fig. 3 is a schematic rear side structural view of an adjusting assembly according to a first embodiment of the present invention;

fig. 4 is a schematic view of the internal structure of the adjusting assembly according to the first embodiment of the present invention;

fig. 5 is a schematic structural diagram of an adjusting assembly according to a second embodiment of the present invention.

In the figure: 1. a first adjusting device; 11. a first housing; 111. a first scale mark; 12. a first connection block; 122. a pointing element; 13. a first adjustment member; 131. a worm gear; 132. a worm; 133. a first knob; 14. a support pillar; 2. a second adjusting device; 21. a second housing; 211. a first arc-shaped slot; 212. a second arc-shaped slot; 213. a second scale mark; 22. a second adjustment member; 221. a first bevel gear; 222. adjusting a rod; 223. a second bevel gear; 224. a guide bar; 225. a second knob; 226. an arrow; 227. a spool; 23. a fixing assembly; 231. a bolt; 232. a nut; 24. a second connecting block; 3. a carrier plate; 4. a tripod base; 5. a support rod.

Detailed Description

The embodiment of the application provides an engineering detection tripod, has solved prior art, and the tripod cloud platform can not only be in every single move, the direction of controlling go up the unilateral motion.

In order to solve the above problems, the technical solutions in the embodiments of the present application have the following general ideas

In order to better understand the technical scheme, the technical scheme is described in detail in the following with reference to the attached drawings of the specification and specific embodiments.

The first embodiment:

fig. 1 shows a schematic structural diagram of an engineering inspection tripod according to a first embodiment of the present invention. Fig. 2 shows a schematic structural diagram of the front side of the adjusting assembly according to the first embodiment of the present invention. Fig. 3 shows a schematic rear side structure diagram of an adjusting assembly according to a first embodiment of the present invention. Fig. 4 shows a schematic view of the internal structure of the adjusting assembly according to the first embodiment of the present invention. As shown in fig. 1, fig. 2, fig. 3 and fig. 4, the utility model discloses an engineering detection tripod. The direction of Y in the figure does the utility model discloses structural schematic's right-hand member, and the direction of X in the figure does the utility model discloses structural schematic's upper end.

As shown in fig. 1, the device comprises a first adjusting device 1 for adjusting the horizontal rotation angle of the camera, a second adjusting device 2 for adjusting the vertical rotation angle of the camera, a bearing plate 3 for bearing the camera, and a tripod base 4 for supporting the first adjusting device 1. The first adjusting device 1 is arranged on the tripod base 4. The second adjusting device 2 is arranged on the first adjusting device 1. The carrier plate 3 is arranged on the second adjusting device 2.

The upper surface of the tripod base 4 is fixedly connected with the lower surface of the first adjusting device 1. The upper surface of the first adjusting device 1 is fixedly connected with the lower surface of the second adjusting device 2. The first adjusting device 1 is arranged left and right, the second adjusting device 2 is arranged left and right, the bearing plate 3 is arranged on the second adjusting device 2 left and right, and the bearing plate 3 is used for being connected with a camera. When the camera needs to be horizontally rotated, the first adjusting device 1 is adjusted, the second adjusting device 2 and the bearing plate 3 are horizontally rotated, when the camera needs to be vertically rotated, the second adjusting device 2 is adjusted, the bearing plate 3 is vertically rotated, the left and right pitching angles of the camera can be independently moved, the camera can be adjusted more conveniently, and the accuracy is higher.

The first adjusting device 1 includes a first housing 11, a first connecting block 12 connected to the second adjusting device 2, a first adjusting member 13 adjusting a rotation angle of the first connecting block 12, and a support column 14 rotating the first adjusting member 13 within the first housing 11. The support column 14 is disposed in the first housing 11. The first adjusting member 13 is movably disposed in the first housing 11. The first adjusting piece 13 is movably connected with the supporting column 14. The first connecting block 12 is fixedly connected with the first adjusting piece 13. The first connecting block 12 is disposed through the first housing 11 and is fixedly connected to the second adjusting device 2.

The first housing 11 is hollow inside. The support column 14 is vertically disposed on the bottom surface inside the first housing 11. The first adjusting member 13 is movably disposed in the first housing 11. The first adjusting piece 13 is movably connected with the supporting column 14. The first adjusting part 13 is sleeved on the supporting column 14, the first connecting block 12 is arranged on the upper surface of the first adjusting part 13, and the upper surface of the first connecting block 12 is fixedly connected with the lower surface of the second adjusting part 13.

Preferably, the second adjusting device 2 includes a second housing 21 connected to the first connecting block 12, a second adjusting member 22 for adjusting the vertical rotation of the bearing plate 3, a fixing assembly 23 for fixing the angle of the second adjusting member 22, and a second connecting block 24 for arranging the bearing plate 3 on the second adjusting member 22. The second housing 21 is fixedly connected to the first connection block 12. The second regulating member 22 is disposed in the second housing 21. The fixing component 23 is disposed through the second housing 21 and disposed on the second adjusting component 22. The second connecting block 24 is provided on the second regulating member 22. The carrier plate 3 is disposed on the second connection block 24.

The second housing 21 is hollow and has an opening on the upper surface, the lower surface of the second housing 21 is fixedly connected with the upper surface of the first connecting block 12, and the second adjusting member 22 is disposed inside the second housing 21. The fixed component 23 is located on the left side of the second adjusting part 22, the fixed component 23 is arranged on the left and right sides and penetrates through the second shell 21, and the bottom of the second connecting block 24 is fixedly connected with the upper surface of the second adjusting part 22. By adjusting the rotation angle of the second adjusting member 22, the angle of the bearing plate 3 is changed, and the bearing plate 3 rotates back and forth.

The first adjusting member 13 includes a worm wheel 131 and a worm 132 controlling a rotation angle of the worm wheel 131. The worm wheel 131 is fixedly connected with the first connecting block 12, and the worm 132 is disposed through the first housing 11 and is in transmission connection with the worm wheel 131. One end of the worm 132 is rotatably connected to the first housing 11, and the other end of the worm 132 is provided with a first knob 133. The first knob 133 is coaxially and fixedly connected with the worm 132.

Preferably, the worm 131 is inserted into the first housing 11, a circular hole is formed in the front end of the first housing 11, the front end of the worm 131 is located in the circular hole and rotatably located in the circular hole, the rear end of the worm 131 is inserted into the first housing 11, the rear side surface of the worm 131 is fixedly connected with the first knob 133, the first knob 133 is coaxial with the worm 131, the worm wheel 132 is sleeved on the supporting column 14, the worm wheel 132 is rotatably connected to the supporting column 14, and the upper surface of the worm wheel 132 is fixedly connected with the lower surface of the first connecting block 12. When the worm 121 is controlled to rotate circumferentially, the worm 131 is in transmission connection with the worm wheel 132, so that the worm wheel 131 rotates horizontally to drive the first connecting block 12 to rotate horizontally, and the bearing plate 3 is adjusted in the horizontal direction.

Preferably, the second adjusting member 22 includes a first bevel gear 221, an adjusting lever 222 for adjusting the angle of the first bevel gear 221, a second bevel gear 223 for controlling the rotation angle of the second connecting block 24, and a guide lever 224 for guiding the rotation of the second connecting block 24. The adjustment lever 222 is inserted through the second housing 21. One end of the adjusting lever 222 is rotatably connected to the second housing 21, and the other end of the adjusting lever 222 is provided with a second knob 225. The second knob 225 is coaxially and fixedly connected with the adjustment lever 222. The first bevel gear 221 is sleeved on the adjusting rod 222. The second bevel gear 223 is rotatably coupled within the second housing 21. The first bevel gear 221 is in transmission connection with the second bevel gear 223. The guide rod 224 is fixedly connected with the second bevel gear 223, and the guide rod 224 is arranged through the second casing 21.

The first bevel gears 221 are located at the lower left side in the second housing 21 and sleeved on the adjusting rods 222, the first bevel gears 221 are fixedly connected with the adjusting rods 222, and two groups of the first bevel gears 221 are oppositely arranged. The second bevel gear 223 is disposed at a middle position of the second housing 21, a fixing rod is disposed inside the second housing 21, the second bevel gear 223 is sleeved on the fixing rod, and the second bevel gear 223 is in transmission connection with the first bevel gear 221. Two groups of second bevel gears 223 are arranged oppositely, the two groups of second bevel gears 223 are in transmission connection with the two groups of first bevel gears 221 respectively, and two groups of through holes are formed in the second shell 21. The adjusting rod 222 is inserted through the two sets of through holes and is rotatably connected with the two sets of through holes, one side of the adjusting rod 222 is rotatably connected with the second housing 21, and the other side is coaxially and fixedly connected with the second knob 225. The fixing member 23 is disposed on the rear side of the second bevel gear 223 in the front-rear direction. The front side of the second bevel gear 223 is provided with a guide rod 224 at the front and rear, and the guide rod 224 is inserted into the second housing 21. The plane has been seted up to second bevel gear 223 top, and second connecting block 24 is trapezoidal dress, the bottom that second connecting block 24 area is little and second bevel gear 223 fixed connection, the big upper surface of second connecting block 24 area and the ground fixed connection of loading board 3. The adjusting rod 222 is driven to rotate by rotating the second knob 225, the two groups of first bevel gears 221 are in transmission connection with the two groups of second bevel gears 223, the adjusting rod 222 drives the two groups of first bevel gears 221 to rotate, the two groups of second bevel gears 223 are driven to rotate, and therefore the bearing plate 3 is driven to rotate in the vertical direction. So that the camera can rotate in a vertical direction, the second bevel gear 223 can be fixed in rotation angle by the fixing member 23 on the rear side of the second bevel gear 223.

The upper surface of the first housing 11 is provided with first graduation marks 111. The first connecting block 12 is provided at a side thereof with a pointing member 122. The first graduation marks 111 are uniformly arranged circumferentially along the direction of rotation of the pointing element 122. The pointing element 122 points at the first tick mark 111.

First scale mark 11 evenly sets up along the rotatory direction of directional piece 122, first scale mark 111 is provided with 360, the upper surface in first shell is seted up to first scale mark 111, first housing 11 is worn to locate by first connecting block 12, the side of going up of first connecting block 12 is located outside first shell 11, directional piece 122 sets up on the side of going up of first connecting block 12 from top to bottom, and the side that first connecting block 12 was kept away from to directional piece is equipped with 2 sets of chamfers, it is directional more clear and definite to make the front end. The first housing 11 is provided with a first scale mark 111, so that the rotation angle of the first connecting block 12 can be finely adjusted.

A first arc-shaped groove 211 is formed on one side surface of the second housing 21, and a second arc-shaped groove 212 is formed on the other side surface of the second housing 21. The fixed assembly 23 is slidably disposed in the first arcuate slot 211 and the guide bar 224 is slidably disposed in the second arcuate slot 212. The outer side surface of the second arc-shaped groove 212 is provided with a second scale mark 213. The second scale markings 213 are evenly arrayed along the direction of rotation of the second bevel gear 223. One side of the guide rod 224 is fixedly connected with the second bevel gear 223, and the other side of the guide rod 224 is provided with an arrow 226, and the arrow 226 faces the second scale mark 213.

The rear side surface of the second housing 21 is provided with a second arc-shaped groove 212, the second arc-shaped groove 212 is a semicircular arc-shaped groove, the guide rod 224 is located in the second arc-shaped groove 212, the rear end of the guide rod 224 is fixedly connected with the second bevel gear 223, the front end of the guide rod 224 penetrates through the second arc-shaped groove 212, the front end of the guide rod 224 is provided with an arrow 226, the tip of the arrow 226 faces the second scale mark 213, and the outer side of the guide rod 224 contacts with the inner side of the second arc-shaped groove 212. The second graduation marks 213 are uniformly arranged along the direction in which the guide bar 224 rotates, the second graduation marks 213 are arranged at 180 °, and the second graduation marks 213 are opened at the rear side of the second housing 21. When the second knob 225 is rotated, the second bevel gear 223 drives the guide rod 224 to rotate along the second arc-shaped groove 212, and the second arc-shaped groove 212 enables the second bevel gear 223 to rotate more stably. Be equipped with fixed subassembly 23 in the first arc wall 211, fixed subassembly 23 is rotatory along the direction of first arc wall 211, makes the rotation of second bevel gear 223 more stable through first arc wall 211 and second arc wall 212, and second scale mark 213 makes the angle when can the vertical rotation of fine adjustment loading board 3.

Preferably, the fixing assembly 23 includes a bolt 231 coupled to the first bevel gear 221 and a nut 232 threadedly coupled to the bolt 231. The bolt 231 slides within the first arcuate slot 211. The nut 232 presses the side of the second housing 21.

Preferably, the bolt 231 is inserted into the first arc-shaped groove 211, the side surface of the bolt 231 contacts the inner side surface of the first arc-shaped groove 211, and the bolt 231 is threadedly connected with the nut 232. The front side of the nut 232 contacts with the rear side of the second housing 21, and when the rotation angle of the bearing plate 3 in the vertical direction needs to be adjusted, the nut 232 is far away from the second housing 21, so that the adjustment can be performed. When the angle is adjusted to a proper angle, the nut 232 is screwed, so that the nut 232 presses the side surface of the second shell 21, and the vertical angle of the bearing plate 3 is fixed.

The tripod base 4 is provided with 3 groups of supporting rods 5.

Second embodiment:

fig. 4 shows a schematic structural diagram of an aluminum hull fuel injection device according to a second embodiment of the present invention. Fig. 5 shows a partial enlarged view of C in fig. 4. As shown in fig. 1, 2, 3, 4 and 5, the second embodiment is different from the first embodiment in that:

the spool 227 is sleeved on the guide rod 224, and the spool 227 slides in the second arc-shaped groove 212.

The outer surface of the inner cylinder with the small diameter of the spool 227 is in contact with the inner part of the second arc-shaped groove 212, the spool 227 is sleeved on the guide rod 224, and the spool 227 is rotatably connected with the guide rod 224. So that the second bevel gear 223 is more stable in rotation and does not disengage from the second arc-shaped slot 212.

While the preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. An engineering detection tripod is characterized by comprising a first adjusting device (1) for adjusting the horizontal rotation angle of a camera, a second adjusting device (2) for adjusting the vertical rotation angle of the camera, a bearing plate (3) for bearing the camera and a tripod base (4) for supporting the first adjusting device (1);

the first adjusting device (1) is arranged on the tripod base (4); the second adjusting device (2) is arranged on the first adjusting device (1); the bearing plate (3) is arranged on the second adjusting device (2).

2. An engineering testing tripod according to claim 1, wherein said first adjusting device (1) comprises a first housing (11), a first connecting block (12) connected to said second adjusting device (2), a first adjusting member (13) adjusting the rotation angle of said first connecting block (12) and a supporting column (14) rotating said first adjusting member (13) inside said first housing (11);

the support column (14) is arranged in the first shell (11); the first adjusting piece (13) is movably arranged in the first shell (11); the first adjusting piece (13) is movably connected with the supporting column (14); the first connecting block (12) is fixedly connected with the first adjusting piece (13); the first connecting block (12) penetrates through the first shell (11) and is fixedly connected with the second adjusting device (2).

3. An engineering test tripod according to claim 2, wherein said second adjusting means (2) comprises a second housing (21) connected to said first connecting block (12), a second adjusting member (22) for adjusting the vertical rotation of said carrying plate (3), a fixing assembly (23) for fixing the angle of said second adjusting member (22), and a second connecting block (24) for arranging said carrying plate (3) on said second adjusting member (22);

the second shell (21) is fixedly connected with the first connecting block (12); the second adjusting piece (22) is arranged in the second shell (21); the fixing component (23) penetrates through the second shell (21) and is arranged on the second adjusting piece (22); the second connecting block (24) is arranged on the second adjusting piece (22); the bearing plate (3) is arranged on the second connecting block (24).

4. An engineering testing tripod according to claim 2, wherein said first adjusting member (13) comprises a worm wheel (131) and a worm (132) controlling the rotation angle of said worm wheel (131); the worm wheel (131) is fixedly connected with the first connecting block (12), and the worm (132) penetrates through the first shell (11) and is in transmission connection with the worm wheel (131); one end of the worm (132) is rotationally connected with the first shell (11), and the other end of the worm (132) is provided with a first knob (133); the first knob (133) is coaxially and fixedly connected with the worm (132).

5. An engineering inspection tripod according to claim 3, wherein the second adjusting member (22) comprises a first bevel gear (221), an adjusting lever (222) for adjusting the angle of the first bevel gear (221), a second bevel gear (223) for controlling the rotation angle of the second connecting block (24), and a guide bar (224) for guiding the rotation of the second connecting block (24);

the adjusting rod (222) is arranged in the second shell (21) in a penetrating mode; one end of the adjusting rod (222) is rotatably connected with the second shell (21), and the other end of the adjusting rod (222) is provided with a second knob (225); the second knob (225) is coaxially and fixedly connected with the adjusting rod (222); the first bevel gear (221) is sleeved on the adjusting rod (222); the second bevel gear (223) is rotatably connected in the second housing (21); the first bevel gear (221) is in transmission connection with the second bevel gear (223); the guide rod (224) is fixedly connected with the second bevel gear (223) and the guide rod (224) penetrates through the second shell (21).

6. An engineering testing tripod according to claim 2, wherein the upper surface of said first shell (11) is provided with a first graduation mark (111); a pointing piece (122) is arranged on the side surface of the first connecting block (12); the first scale marks (111) are uniformly arranged along the circumference of the rotation direction of the pointing piece (122); the pointing member (122) points at the first graduation mark (111).

7. An engineering test tripod according to claim 5, wherein a first arc-shaped groove (211) is formed on one side surface of the second casing (21), and a second arc-shaped groove (212) is formed on the other side surface of the second casing (21); the fixing component (23) is slidably positioned in the first arc-shaped groove (211), and the guide rod (224) is slidably positioned in the second arc-shaped groove (212); a second scale mark (213) is arranged on the outer side surface of the second arc-shaped groove (212); the second scale marks (213) are uniformly arrayed along the rotation direction of the second bevel gear (223); one side of the guide rod (224) is fixedly connected with the second bevel gear (223), the other side of the guide rod (224) is provided with an arrow (226), and the arrow (226) faces the second scale mark (213).

8. An engineering testing tripod according to claim 7, wherein said fixing assembly (23) comprises a bolt (231) connected to said first bevel gear (221) and a nut (232) screwed on said bolt (231); the bolt (231) is positioned in the first arc-shaped groove (211) to slide; the nut (232) presses the side surface of the second housing (21).

9. An engineering testing tripod according to claim 7, wherein a spool (227) is sleeved on said guide bar (224), said spool (227) being slidable in said second arc-shaped slot (212).

10. An engineering testing tripod according to claim 1, wherein 3 sets of support bars (5) are provided on said tripod base (4).