CN116123413A

CN116123413A - Mapping instrument positioning equipment for engineering mapping

Info

Publication number: CN116123413A
Application number: CN202310347829.8A
Authority: CN
Inventors: 王铭; 陈臻臻
Original assignee: Shandong Muren Construction Engineering Co ltd
Current assignee: Shandong Muren Construction Engineering Co ltd
Priority date: 2023-04-04
Filing date: 2023-04-04
Publication date: 2023-05-16

Abstract

The invention belongs to the technical field of engineering surveying and mapping, and relates to surveying instrument positioning equipment for engineering surveying and mapping. The equipment comprises a tripod, wherein an installation seat is installed at the upper end of the tripod, and a ground grabbing mechanism is arranged at the lower end of the tripod. An adjusting ball is rotationally arranged in the mounting seat. The lower extreme of adjusting ball is provided with plumb bob through connecting the rope, fixed establishment is installed to the top of adjusting ball. The tripod is firmly fixed on the ground through the ground grabbing mechanism, so that the tripod is prevented from moving accidentally. Under the action of the plumb bob, the adjusting ball rotates in the inner cavity of the mounting seat, so that the mass center of the adjusting ball, the connecting rope and the conical tip of the plumb bob are positioned on the same vertical line, the bottom of the fixing groove on the adjusting ball is always positioned in a horizontal state, and then the placing table can be positioned in the horizontal state when the fixing mechanism is mounted on the adjusting ball. The adjusting ball is clamped and fixed through the clamping mechanism, so that the adjusting ball is prevented from rotating accidentally when the fixing mechanism is installed.

Description

Mapping instrument positioning equipment for engineering mapping

Technical Field

The invention belongs to the technical field of engineering surveying and mapping, and relates to surveying instrument positioning equipment for engineering surveying and mapping.

Background

Engineering mapping plays an important role in various modern production and construction. In the use process of the surveying instrument, the phenomenon of uneven ground is easy to occur due to the complexity of the surveying environment. On complex terrains, the placement of the mapping instrument is prone to tilting, and if the mapping instrument is not placed correctly or the placement position is slightly deviated, the measurement accuracy is affected.

An instrument positioning device for engineering mapping is disclosed in publication CN114658996a, which comprises a base, a mounting plate and support legs. The locating rod in the equipment drives the ball to rotate in the inner cavity under the action of self gravity and weight force of the counterweight until the locating rod is vertical to the ground, so that a surveying instrument on the mounting plate is in a horizontal state, then the locking bolt is loosened, the rod piece II and the counterweight body fall under the action of gravity, and when the counterweight body falls on the ground, a worker presses the counterweight body by hand to enable the counterweight body to be inserted into the ground. In the process of inserting the counterweight body into the ground, the force exerted by a person cannot be guaranteed to be always vertical to the ground, so that the counterweight body is easy to deviate from the original position, the ball is slightly rotated in the inner cavity, the mounting plate is inclined, and the surveying instrument is difficult to keep horizontal.

In order to solve the problems, the invention provides mapping instrument positioning equipment for engineering mapping.

Disclosure of Invention

In order to solve the problems in the background technology, the invention provides mapping instrument positioning equipment for engineering mapping.

In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: a mapper positioning apparatus for engineering mapping comprising:

the tripod comprises a tripod body, wherein the upper end of the tripod body is provided with a mounting seat, and the lower end of the tripod body is provided with a ground grabbing mechanism;

the adjusting ball is provided with an inner cavity with two open ends, and the shape of the inner cavity is matched with the shape of the adjusting ball; the adjusting ball is rotatably arranged in the inner cavity, a plumb bob is arranged at the lower end of the adjusting ball through a connecting rope, and a fixing mechanism is arranged at the uppermost end of the adjusting ball;

the clamping mechanism comprises a first guide rod, an arc plate and a first mounting ring;

the outer circumference of the mounting seat is fixedly provided with a ring plate, the ring plate is provided with an annular chute, and the first mounting ring is fixedly provided with a T-shaped sliding block in limit sliding fit with the annular chute; the arc plates are symmetrically arranged on the inner circumference of the first mounting ring; the arc plate is provided with a third inclined plane; first guide slots are symmetrically formed in the mounting base, first guide rods are matched in the two first guide slots, one end of each first guide rod penetrates through the mounting base to be matched with the arc plate, and the other end of each first guide rod penetrates through the corresponding first guide slot to be matched with the adjusting ball.

Further, a second clamping plate is slidably matched in the first guide groove, the second clamping plate is fixedly connected with the first guide rod, the first clamping plate is matched with the adjusting ball, and the first clamping plate is provided with an arc-shaped surface matched with the adjusting ball;

the first guide rod is sleeved with a first spring, one end of the first spring is fixedly connected with the second clamping plate, and the other end of the first spring is fixedly connected with the bottom of the first guide groove.

Further, a threaded hole is formed in the first mounting ring, and a fastening bolt is matched in the threaded hole.

Further, the tripod comprises three first connecting rods, wherein the three first connecting rods form the tripod, and the lower end of each first connecting rod is provided with a ground grabbing mechanism;

the lower end of the annular plate is fixedly provided with three first supports, the three first supports are in one-to-one correspondence with the three first connecting rods, and the three first supports are uniformly and fixedly arranged at the lower end of the outer circumference of the annular plate; the upper end of the first connecting rod is rotationally connected with the corresponding first support through a first rotating shaft.

Further, the ground grabbing mechanism comprises a cone shell, a first lead screw, an extrusion rod and a second guide rod;

the cone shell is fixedly arranged at the lower end of the first connecting rod; the lower part of the cone shell is provided with a plurality of round holes; a plurality of round holes are arranged in a row up and down; a guide block is fixedly arranged on the side wall of each round hole; the plurality of second guide rods are in one-to-one correspondence with the plurality of round holes; a second guide groove matched with the guide block is formed in the second guide rod; one end, close to the interior of the conical shell, of the second guide rod is fixedly provided with a connecting block matched with the extrusion rod; the connecting block is provided with a first inclined plane and a first arc-shaped surface;

the second guide rod is sleeved with a second spring, one end of the second spring is fixedly connected with the connecting block, and the other end of the second spring is fixedly connected with the inner wall of the conical shell;

the cone shell is provided with an arc-shaped mounting cavity, a limiting chute is longitudinally formed in the inner wall of the mounting cavity, and a sliding block which is in sliding fit with the limiting chute is fixedly arranged on the extrusion rod; the lower end of the extrusion rod is provided with a second inclined plane matched with the first inclined plane; the extrusion rod is provided with a second arc-shaped surface matched with the inner wall of the cone shell; the extrusion rod is provided with a third arc-shaped surface matched with the first arc-shaped surface;

the inner wall of the conical shell is fixedly provided with two second fixing blocks, and the first screw rod is rotatably arranged between the two second fixing blocks; the first screw rod is in threaded connection with the sliding block.

Further, a second bevel gear is fixedly arranged at the upper end of the first lead screw; the upper part of the cone shell is provided with a perforation, and a third connecting rod is in running fit in the perforation; one end of the third connecting rod is fixedly provided with a first bevel gear meshed with the second bevel gear, and the other end of the third connecting rod penetrates through the through hole to extend out of the conical shell and is fixedly provided with a second hand wheel.

Further, a protection mechanism is arranged at the lower part of the tripod;

the protection mechanism comprises a fourth connecting rod and a protection net;

the protective net is fixedly arranged in the second mounting ring; the four connecting rods are three, and the three fourth connecting rods are in one-to-one correspondence with the three first connecting rods; one end of the fourth connecting rod is hinged with the corresponding first connecting rod, and one end of the fourth connecting rod is hinged with the second mounting ring.

Further, a second support is fixedly arranged on the first connecting rod, and the fourth connecting rod is rotationally connected with the second support through a second rotating shaft;

a third support is fixedly arranged on the second mounting ring; the fourth connecting rod is rotationally connected with the third support through a third rotating shaft.

Further, the fixing mechanism comprises a vertical plate, a placing table and a first clamping plate;

the top end of the adjusting ball is provided with a fixing groove; the lower end of the vertical plate is matched with the fixing groove;

the placing table is fixedly arranged at the top end of the vertical plate;

the two first clamping plates are in limit sliding fit with the placing table; the placing table is rotatably provided with a second screw rod, the second screw rod comprises a first thread section and a second thread section, the first thread section and the second thread section are fixedly connected, and the spiral directions of the first thread section and the second thread section are opposite; one of the first clamping plates is in threaded connection with the first threaded section; the other first clamping plate is in threaded connection with the second threaded section.

Further, a first notch is formed in one side of the upper end face of the placing table; two first fixing blocks are fixedly arranged on the first notch, and the second lead screw is rotatably arranged between the two first fixing blocks;

the first clamping plate comprises a long side section and a short side section, and the long side section and the short side section are fixedly connected to form an L shape; the long side section is in sliding fit with the upper end face of the placement table, and the short side section is in sliding fit with the first notch.

Compared with the prior art, the invention has the following beneficial effects:

the tripod is firmly fixed on the ground through the ground grabbing mechanism, so that the tripod is prevented from moving accidentally. Under the action of the plumb bob, the adjusting ball rotates in the inner cavity of the mounting seat, so that the mass center of the adjusting ball, the connecting rope and the conical tip of the plumb bob are positioned on the same vertical line, the bottom of the fixing groove on the adjusting ball is always positioned in a horizontal state, and then the placing table can be positioned in the horizontal state when the fixing mechanism is mounted on the adjusting ball. The adjusting ball is clamped and fixed through the clamping mechanism, so that the adjusting ball is prevented from rotating accidentally when the fixing mechanism is installed.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the structure of the ground grabbing mechanism of the present invention;

FIG. 3 is an enlarged view of portion B of FIG. 2 in accordance with the present invention;

FIG. 4 is an enlarged view of section C of FIG. 2 in accordance with the present invention;

FIG. 5 is a schematic view of the structure of the second guide bar of the present invention;

FIG. 6 is a schematic view of the structure of the connecting block of the present invention;

FIG. 7 is a schematic view showing the structure of the extrusion rod in the present invention;

FIG. 8 is a schematic view of the structure of the protection mechanism of the present invention;

FIG. 9 is a cross-sectional view of the clamping mechanism of the present invention;

FIG. 10 is an enlarged view of portion A of FIG. 9 in accordance with the present invention;

FIG. 11 is a schematic view of the structure of the second clamping plate in the present invention;

FIG. 12 is a schematic view of the structure of the mounting base of the present invention;

FIG. 13 is a schematic view of the structure of the annular chute of the present invention;

FIG. 14 is a schematic view of a first mounting ring of the present invention;

FIG. 15 is a schematic view of the structure of an arc plate of the present invention;

fig. 16 is a schematic structural view of the fixing mechanism in the present invention.

In the figure: 1. a vertical plate; 2. a mounting base; 3. a protective net; 4. a ring plate; 5. a first support; 6. a first rotating shaft; 7. a first link; 8. a plumb bob; 9. a protection mechanism; 10. a ground grabbing mechanism; 11. a connecting rope; 12. a first mounting ring; 13. an arc plate; 14. an adjusting ball; 15. a fixing mechanism; 16. a first hand wheel; 17. a second lead screw; 18. a first fixed block; 19. a first notch; 20. a placement table; 21. a first clamping plate; 22. a fixing groove; 23. a push rod; 24. a T-shaped slider; 25. a first guide groove; 26. a second clamping plate; 27. a first spring; 28. a first guide bar; 29. a fastening bolt; 30. an annular chute; 31. a cone shell; 32. a first lead screw; 33. a second fixed block; 34. a second guide bar; 35. a connecting block; 36. an extrusion rod; 37. a first bevel gear; 38. a third link; 39. the second hand wheel; 40. a slide block; 41. a second bevel gear; 42. a mounting cavity; 43. a second spring; 44. a round hole; 45. a guide block; 46. a second guide groove; 47. a second support; 48. a second rotating shaft; 49. a fourth link; 50. a third rotating shaft; 51. a third support; 52. and a second mounting ring.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

As shown in fig. 1 to 16, the technical scheme adopted by the invention is as follows: a mapping instrument positioning device for engineering mapping comprises a tripod, an adjusting ball 14, a fixing mechanism 15 and a clamping mechanism. The upper end of tripod is provided with mount pad 2, and adjusting ball 14 rotates to set up in mount pad 2. The lower end of the tripod is provided with a ground grabbing mechanism 10. A fixing mechanism 15 is mounted on the adjustment ball 14, the fixing mechanism 15 being used to mount the surveying instrument. The adjustment ball 14 keeps the fixing mechanism 15 in a horizontal state. The clamping mechanism is used to secure the adjustment ball 14.

The tripod comprises three first connecting rods 7, and the three first connecting rods 7 are distributed in a triangle to form the tripod. A ground grabbing mechanism 10 is fixedly arranged at the lower end of each first connecting rod 7, and the first connecting rods 7 are fixed to the ground through the ground grabbing mechanism 10.

The ground grabbing mechanism 10 comprises a conical shell 31, an extrusion rod 36, a second guide rod 34 and a first lead screw 32.

The cone shell 31 is fixedly arranged at the lower end of the first connecting rod 7. The cone shell 31 has an arcuate mounting cavity 42 therein. The lower part of the cone shell 31 is provided with a plurality of round holes 44, and the round holes 44 are arranged in a row up and down. A guide block 45 is fixedly arranged on the side wall of each round hole 44. The second guide bar 34 mates with the circular aperture 44. The second guide rod 34 is provided with a second guide groove 46 which is in sliding fit with the guide block 45. The second guide rod 34 is close to the connecting block 35 that has set firmly of the one end in the cone shell 31, and the one end that the connecting block 35 kept away from second guide rod 34 has first inclined plane and first arcwall face, and first inclined plane is located the top of first arcwall face. The end of the second guide rod 34 remote from the connection block 35 extends into the circular aperture 44 and is tapered to facilitate insertion of the second guide rod 34 into the earth. The second guide rod 34 is sleeved with a second spring 43. One end of the second spring 43 is fixedly connected with the connecting block 35, and the other end of the second spring 43 is fixedly connected with the inner wall of the conical shell 31.

In this embodiment, the number of the round holes 44 is three, and the number of the corresponding second guide rods 34 is three. For convenience of expression, three second guide bars 34 are named as a first second guide bar 34, a second guide bar 34, and a third second guide bar 34 in this order from the top down. The corresponding connecting blocks 35 are a first connecting block 35, a second connecting block 35 and a third connecting block 35 in sequence.

The pressing rod 36 is slidably disposed in the cone 31. Specifically, the pressing rod 36 is fixedly provided with a slider 40. A limiting chute is longitudinally formed on the inner wall of the conical shell 31, and the sliding block 40 is in limiting sliding fit with the limiting chute. The extrusion stem 36 has a second arcuate surface that mates with the inner wall of the cone 31. The extrusion stem 36 has a third arcuate surface that mates with the first arcuate surface. The lower end of the pressing rod 36 has a second inclined surface adapted to the first inclined surface. The first inclined plane and the second inclined plane are both curved surfaces.

The first screw 32 is rotatably provided in the conical shell 31, and an axis of the first screw 32 is parallel to an axis of the conical shell 31. Specifically, the inner wall of the conical shell 31 is fixedly provided with two second fixing blocks 33, and the two second fixing blocks 33 are arranged up and down. The first screw 32 is rotatably mounted between two second fixed blocks 33. The slider 40 is screwed with the first screw 32. The upper end of the first screw shaft 32 passes through the second fixing block 33 above and is fixedly provided with a second bevel gear 41. The upper part of the cone shell 31 is provided with a perforation, and a third connecting rod 38 is in rotary fit in the perforation. One end of the third link 38 is fixedly sleeved with a first bevel gear 37 engaged with a second bevel gear 41. The other end of the third connecting rod 38 extends outside the conical shell 31 through the perforation and is fixedly provided with a second hand wheel 39. The second hand wheel 39 facilitates rotation of the third link 38.

In the initial state, the extrusion rod 36 is positioned above the first connecting block 35, and none of the three connecting blocks 35 is in contact with the extrusion rod 36. The second springs 43 are all in a natural state, and one end of the second guide rod 34, which is far away from the connecting block 35, is positioned in the corresponding round hole 44.

The second hand wheel 39 is rotated to enable the third connecting rod 38 to rotate, the third connecting rod 38 drives the first lead screw 32 to rotate through the first bevel gear 37 and the second bevel gear 41, and the first lead screw 32 drives the sliding block 40 to slide up and down, so that the extrusion rod 36 slides up and down. When the pressing rod 36 moves downward, the pressing rod 36 presses the first inclined surface through the second inclined surface, and thus the second guide rod 34 moves outward of the cone 31 against the elastic force of the second spring 43. The end of the second guide rod 34 remote from the connection block 35 protrudes beyond the conical shell 31 and is inserted transversely into the earth, so that the first connection rod 7 is more firmly fixed to the ground.

The lower part of the tripod formed by the first connecting rod 7 is provided with a protection mechanism 9. The protection mechanism 9 includes a fourth link 49 and the protection net 3. The protection net 3 is fixedly arranged in the second mounting ring 52. The fourth links 49 have three, three fourth links 49 in one-to-one correspondence with the three first links 7. One end of the fourth link 49 is hinged with the second mounting ring 52, and the other end of the fourth link 49 is hinged with the corresponding first link 7. Specifically, the first link 7 is fixed with a second support 47, and the fourth link 49 is rotatably connected to the second support 47 through a second rotation shaft 48. The second mounting ring 52 is fixedly provided with a third support 51, and the fourth connecting rod 49 is rotatably connected with the third support 51 through a third rotating shaft 50.

The protection mechanism 9 is used for protecting the plumb bob 8 and preventing the plumb bob 8 from falling off accidentally and falling to the ground to be broken. The protection mechanism 9 can also make the tripod more stable.

The lower end of the adjusting ball 14 is provided with a plumb bob 8 through a connecting rope 11, and the plumb bob 8 is a cone. The top end of the adjusting ball 14 is provided with a fixing groove 22. The adjusting ball 14 is a homogeneous sphere, and the center of the adjusting ball 14 is the center of mass of the adjusting ball 14. Under the action of the plumb bob 8, the centroid point of the adjusting ball 14, the connecting rope 11 and the cone tip point of the plumb bob 8 are positioned on the same vertical line. The bottom of the fixing groove 22 is in a horizontal state.

The clamping mechanism comprises a first guide bar 28, an arc plate 13, a first mounting ring 12.

The mounting seat 2 is provided with an inner cavity, and the adjusting ball 14 is embedded in the inner cavity of the mounting seat 2 and can freely rotate in the inner cavity. The shape of the inner cavity is matched with the shape of the adjusting ball 14. The upper end face of the adjusting ball 14 protrudes out of the upper end face of the mounting seat 2 through the upper port of the inner cavity, and the lower end face of the adjusting ball 14 protrudes out of the lower end face of the mounting seat 2 through the lower port of the inner cavity. The side wall of the mounting seat 2 is symmetrically provided with a first guide groove 25. The outer circumference of mount pad 2 has set firmly annular plate 4, and the lower extreme of annular plate 4 has set firmly first support 5, and first support 5 has three, and three first support 5 and three first connecting rod 7 one-to-one. The upper end of the first link 7 is rotatably connected to the first support 5 via a first rotation shaft 6. The first mounting ring 12 is in limit sliding fit with the ring plate 4. Specifically, the annular runner 30 is formed on the annular plate 4, and the cross section of the annular runner 30 is T-shaped. A T-shaped slider 24 is fixedly arranged on the first mounting ring 12 and is in sliding fit with the annular chute 30.

The number of the arc plates 13 is two, and the two arc plates 13 are symmetrically fixed on the inner circumference of the first mounting ring 12. One end of the arc plate 13 has a third inclined surface inclined toward the first mounting ring 12, and the third inclined surface has a guiding function. The cross-sectional area of the arc plate 13 gradually increases from one end having the third inclined surface to the other end.

The axes of the ring plate 4, the mounting seat 2 and the first mounting ring 12 are on the same straight line.

Two push rods 23 are symmetrically fixed on the outer circumference of the first mounting ring 12. The first mounting ring 12 is pushed by the push rod 23 to move along the annular chute 30.

The first guide bars 28 have two, two first guide bars 28 corresponding to the two first guide grooves 25 one by one. One end of the first guide rod 28 is engaged with the arc plate 13, and the other end of the first guide rod 28 is engaged with the adjustment ball 14 through the first guide groove 25.

Specifically, the first guide groove 25 is slidably fitted with a second clamping plate 26, and the second clamping plate 26 is fitted with the adjustment ball 14. The surface of the second clamping plate 26, which is adapted to the adjusting ball 14, is curved, so that the second clamping plate 26 is in contact with the adjusting ball 14, which is advantageous for the second clamping plate 26 to clamp the adjusting ball 14. One end of the first guide bar 28 is fixedly connected with the second clamping plate 26. The other end of the first guide rod 28 penetrates the mount 2 and extends between the mount 2 and the first mounting ring 12. The end of the first guide rod 28 matched with the arc plate 13 is arc-shaped. The first guide rod 28 is sleeved with a first spring 27, one end of the first spring 27 is fixedly connected with the second clamping plate 26, and the other end of the first spring 27 is fixedly connected with the bottom of the first guide groove 25.

In the initial state, the first spring 27 is in a natural state, and the second clamping plate 26 is at a certain distance from the adjusting ball 14. The end of the first guide bar 28 remote from the second clamping plate 26 is not in contact with the arc plate 13. The first mounting ring 12 is rotated, the first mounting ring 12 drives the arc plate 13 to rotate, so that a third inclined surface on the arc plate 13 is gradually contacted with the first guide rod 28, the arc plate 13 pushes the first guide rod 28 to move towards the direction approaching to the adjusting ball 14, and then the second clamping plate 26 is gradually contacted with the adjusting ball 14 and is abutted against the adjusting ball 14. Both second clamping plates 26 are abutted against the adjusting ball 14 to clamp the adjusting ball 14, thereby fixing the adjusting ball 14.

The first mounting ring 12 is provided with a threaded hole, and a fastening bolt 29 is fitted in the threaded hole. By abutting the fixing bolt 29 against the mount 2, the first mount ring 12 is prevented from being rotated accidentally.

The fixing mechanism 15 includes a riser 1, a placement table 20, and a first clamping plate 21.

The vertical plate 1 and the adjusting ball 14 are fixedly connected with the adjusting ball 14 through the fixing groove 22. The placement table 20 is fixedly arranged at the top end of the vertical plate 1, the placement table 20 is vertical to the vertical plate 1, and when the fixing mechanism 15 is installed in the fixing groove 22, the upper surface of the placement table 20 is in a horizontal state. The first clamping plates 21 are two, and the two first clamping plates 21 are in limit sliding fit with the placing table 20. The first clamping plate 21 includes a long side section and a short side section, and the long side section and the short side section are fixedly connected to form an L-shape. The long side section of the first clamping plate 21 is in sliding fit with the upper surface of the placement table 20. The two first clamping plates 21 move towards each other to clamp the surveying instrument, so that the fixing of the surveying instrument is realized. The two first clamping plates 21 are moved away from each other, releasing the mapping instrument.

A first notch 19 is formed in one side of the placement table 20, and a short side section of the first clamping plate 21 is in sliding fit with the first notch 19. Two first fixed blocks 18 are fixedly arranged on the first notch 19, a second lead screw 17 is rotatably arranged between the two first fixed blocks 18, the second lead screw 17 comprises a first thread section and a second thread section, the first thread section and the second thread section are fixedly connected, and the spiral directions of the first thread section and the second thread section are opposite. The first thread segments are screwed with one of the first clamping plates 21 and the second thread segments are screwed with the other first clamping plate 21. One end of the second screw rod 17 passes through the corresponding first fixed block 18 to fixedly arrange the first hand wheel 16.

Working principle: in the initial state, the extrusion rod 36 is positioned above the first connecting block 35, and none of the three connecting blocks 35 is in contact with the extrusion rod 36. The second spring 43 is in a natural state, and one end of the second guide rod 34, which is far away from the connecting block 35, is positioned in the corresponding round hole 44. The first spring 27 is in its natural state and the second clamping plate 26 is at a distance from the adjustment ball 14. The end of the first guide bar 28 remote from the second clamping plate 26 is not in contact with the arc plate 13.

In use, the tripod is first spread apart and the tip of the cone 31 is inserted into the ground. During the tripod opening process, the first link 7 rotates around the first rotation shaft 6. One end of the fourth link 49 rotates about the second rotation axis 48, the other end of the fourth link 49 rotates about the third rotation axis 50, and the angle between the fourth link 49 and the first link 7 becomes gradually larger. The height of the tripod is adjusted by adjusting the opening angle of the first link 7. The mounting seat 2 should be in a horizontal state as much as possible when the tripod is placed.

The second hand wheel 39 is rotated, the second hand wheel 39 drives the third connecting rod 38 to rotate, the third connecting rod 38 drives the first lead screw 32 to rotate through the first bevel gear 37 and the second bevel gear 41, the first lead screw 32 drives the sliding block 40 to move downwards, the extrusion rod 36 further moves downwards, and the lower end of the extrusion rod 36 is gradually contacted with the first connecting block 35. The pressing rod 36 presses the first inclined surface through the second inclined surface, so that the first second guide rod 34 moves to the outside of the conical shell 31 through the cooperation of the guide block 45 and the second guide groove 46, and the second spring 43 is compressed. The end of the first second guide rod 34 remote from the connection block 35 is extended to the outside of the cone 31 and inserted into the soil until the first arc surface is engaged with the outer surface of the pressing rod 36. Continuing to rotate the second hand wheel 39, the extrusion rod 36 acts on the second connecting block 35 and the third connecting block 35 in sequence. The second guide rod 34 and the third guide rod 34 extend out of the cone shell 31 and are inserted into soil. The plurality of second guide rods 34 are inserted into the earth, increasing the stability of the tripod.

In the tripod installation process, the connecting rope 11 pulls the adjusting ball 14 under the action of gravity of the plumb bob 8, so that the adjusting ball 14 rotates in the installation seat 2, when the plumb bob 8 does not shake any more, the connecting rope 11 is in a vertical state under the action of gravity of the plumb bob 8, the mass center of the adjusting ball 14, the connecting rope 11 and the cone tip of the plumb bob 8 are on the same vertical line, and the bottom of the fixing groove 22 is in a horizontal state.

Then, the first mounting ring 12 is rotated through the push rod 23, so that the first mounting ring 12 drives the second arc plate 13 to rotate, one end with the smallest sectional area of the arc plate 13 is contacted with the first guide rod 28, along with the rotation of the first mounting ring 12, the sectional area of the arc plate 13 at the contact position with the first guide rod 28 is gradually increased, the arc plate 13 pushes the first guide rod 28 to move towards the direction approaching to the adjusting ball 14, the first spring 27 is stretched, and the first guide rod 28 pushes the second clamping plate 26 to move towards the direction approaching to the adjusting ball 14. Until one end of the first guide bar 28 passes over the third incline and then continues to rotate the first mounting ring 12 until it is stationary. At this time, the second clamping plates 26 are abutted against the adjusting ball 14, and the two second clamping plates 26 clamp the adjusting ball 14, so that the adjusting ball 14 is fixed. The fixing bolt 29 is then screwed so that the fixing bolt 29 abuts against the mount 2, preventing the first mounting ring 12 from rotating relative to the mount 2.

The riser 1 is then inserted into the fixing slot 22 such that the fixing mechanism 15 is fixedly mounted to the adjustment ball 14 and the placement table 20 is in the horizontal plane. Then placing the surveying instrument on the placing table 20 and between the two first clamping plates 21, then rotating the first hand wheel 16, and driving the second lead screw 17 to rotate by the first hand wheel 16, and driving the two first clamping plates 21 to move in opposite directions by the second lead screw 17, so that the two first clamping plates 21 clamp the surveying instrument.

Although the present invention has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present invention.

Claims

1. A mapping instrument positioning apparatus for engineering mapping, comprising: the tripod comprises a tripod body, wherein an installation seat (2) is installed at the upper end of the tripod body, and a ground grabbing mechanism (10) is arranged at the lower end of the tripod body; the adjusting ball (14) is provided with an inner cavity with two open ends, and the shape of the inner cavity is matched with the shape of the adjusting ball (14); the adjusting ball (14) is rotatably arranged in the inner cavity, a plumb bob (8) is arranged at the lower end of the adjusting ball (14) through a connecting rope (11), and a fixing mechanism (15) is arranged at the uppermost end of the adjusting ball (14); the clamping mechanism comprises a first guide rod (28), an arc plate (13) and a first mounting ring (12); the outer circumference of the mounting seat (2) is fixedly provided with a ring plate (4), the ring plate (4) is provided with an annular chute (30), and the first mounting ring (12) is fixedly provided with a T-shaped sliding block (24) in limit sliding fit with the annular chute (30); the arc plates (13) are symmetrically arranged on the inner circumference of the first mounting ring (12); the arc plate (13) is provided with a third inclined plane; first guide grooves (25) are symmetrically formed in the mounting base (2), first guide rods (28) are matched in the two first guide grooves (25), one end of each first guide rod (28) penetrates through the mounting base (2) to be matched with the arc plate (13), and the other end of each first guide rod (28) penetrates through the corresponding first guide groove (25) to be matched with the corresponding adjusting ball (14).

2. A mapper positioning device for engineering mapping according to claim 1, characterized in that: the first guide groove (25) is slidably matched with a second clamping plate (26), the second clamping plate (26) is fixedly connected with the first guide rod (28), the first clamping plate (21) is matched with the adjusting ball (14), and the first clamping plate (21) is provided with an arc-shaped surface matched with the adjusting ball (14); the first guide rod (28) is sleeved with a first spring (27), one end of the first spring (27) is fixedly connected with the second clamping plate (26), and the other end of the first spring (27) is fixedly connected with the bottom of the first guide groove (25).

3. A mapper positioning device for engineering mapping according to claim 1, characterized in that: the first mounting ring (12) is provided with a threaded hole, and a fastening bolt (29) is matched in the threaded hole.

4. A mapper positioning device for engineering mapping according to claim 1, characterized in that: the tripod comprises three first connecting rods (7), wherein the three first connecting rods (7) form the tripod, and the lower end of each first connecting rod (7) is provided with a ground grabbing mechanism (10); the lower end of the annular plate (4) is fixedly provided with three first supports (5), the three first supports (5) are in one-to-one correspondence with the three first connecting rods (7), and the three first supports (5) are uniformly fixedly arranged at the lower end of the outer circumference of the annular plate (4); the upper end of the first connecting rod (7) is rotationally connected with the corresponding first support (5) through a first rotating shaft (6).

5. A mapper positioning device for engineering mapping according to claim 1, characterized in that: the ground grabbing mechanism (10) comprises a conical shell (31), a first lead screw (32), an extrusion rod (36) and a second guide rod (34); the cone shell (31) is fixedly arranged at the lower end of the first connecting rod (7); the lower part of the cone shell (31) is provided with a plurality of round holes (44); a plurality of round holes (44) are arranged in a row up and down; a guide block (45) is fixedly arranged on the side wall of each round hole (44); the second guide rods (34) are multiple, and the second guide rods (34) are in one-to-one correspondence with the round holes (44); a second guide groove (46) matched with the guide block (45) is formed in the second guide rod (34); one end, close to the interior of the conical shell (31), of the second guide rod (34) is fixedly provided with a connecting block (35) matched with the extrusion rod (36); the connecting block (35) is provided with a first inclined plane and a first arc-shaped surface; a second spring (43) is sleeved on the second guide rod (34), one end of the second spring (43) is fixedly connected with the connecting block (35), and the other end of the second spring (43) is fixedly connected with the inner wall of the conical shell (31); the cone shell (31) is provided with an arc-shaped mounting cavity (42), a limiting chute is longitudinally formed in the inner wall of the mounting cavity (42), and a sliding block (40) which is in sliding fit with the limiting chute is fixedly arranged on the extrusion rod (36); the lower end of the extrusion rod (36) is provided with a second inclined plane matched with the first inclined plane; the extrusion rod (36) is provided with a second arc-shaped surface matched with the inner wall of the conical shell (31); the extrusion rod (36) is provided with a third arc-shaped surface matched with the first arc-shaped surface; the inner wall of the conical shell (31) is fixedly provided with two second fixing blocks (33), and the first screw rod (32) is rotatably arranged between the two second fixing blocks (33); the first screw (32) is in threaded connection with the slider (40).

6. A mapper positioning device for engineering mapping according to claim 5, characterized in that: a second bevel gear (41) is fixedly arranged at the upper end of the first lead screw (32); the upper part of the cone shell (31) is provided with a perforation, and a third connecting rod (38) is in rotary fit in the perforation; one end of the third connecting rod (38) is fixedly provided with a first bevel gear (37) meshed with the second bevel gear (41), and the other end of the third connecting rod (38) penetrates through the through hole to extend out of the conical shell (31) and is fixedly provided with a second hand wheel (39).

7. A mapper positioning device for engineering mapping according to claim 4, characterized in that: the lower part of the tripod is provided with a protection mechanism (9); the protection mechanism (9) comprises a fourth connecting rod (49) and a protection net (3); the protective net (3) is fixedly arranged in the second mounting ring (52); the four connecting rods (49) are three, and the three fourth connecting rods (49) are in one-to-one correspondence with the three first connecting rods (7); one end of the fourth connecting rod (49) is hinged with the corresponding first connecting rod (7), and one end of the fourth connecting rod (49) is hinged with the second mounting ring (52).

8. A mapper positioning device for engineering mapping according to claim 7, characterized in that: a second support (47) is fixedly arranged on the first connecting rod (7), and a fourth connecting rod (49) is rotationally connected with the second support (47) through a second rotating shaft (48); a third support (51) is fixedly arranged on the second mounting ring (52); the fourth connecting rod (49) is rotatably connected with the third support (51) through a third rotating shaft (50).

9. A mapper positioning device for engineering mapping according to claim 1, characterized in that: the fixing mechanism (15) comprises a vertical plate (1), a placing table (20) and a first clamping plate (21); a fixed groove (22) is formed in the top end of the adjusting ball (14); the lower end of the vertical plate (1) is matched with the fixing groove (22); the placing table (20) is fixedly arranged at the top end of the vertical plate (1); the two first clamping plates (21) are in limit sliding fit with the placing table (20); the placing table (20) is rotatably provided with a second screw rod (17), the second screw rod (17) comprises a first thread section and a second thread section, the first thread section and the second thread section are fixedly connected, and the spiral directions of the first thread section and the second thread section are opposite; one of the first clamping plates (21) is in threaded connection with the first threaded section; the other first clamping plate (21) is in threaded connection with the second threaded section.

10. A mapper positioning device according to claim 9 for engineering mapping, characterized in that: a first notch (19) is formed in one side of the upper end face of the placing table (20); two first fixed blocks (18) are fixedly arranged on the first notch (19), and the second lead screw (17) is rotatably arranged between the two first fixed blocks (18); the first clamping plate (21) comprises a long side section and a short side section, and the long side section and the short side section are fixedly connected to form an L shape; the long side section is in sliding fit with the upper end face of the placement table (20), and the short side section is in sliding fit with the first notch (19).