CN215303860U

CN215303860U - Portable survey and drawing topography instrument platform

Info

Publication number: CN215303860U
Application number: CN202121538869.3U
Authority: CN
Inventors: 周新星; 章达成; 袁伟俭; 谢斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-07-07
Filing date: 2021-07-07
Publication date: 2021-12-28
Anticipated expiration: 2031-07-07

Abstract

The utility model discloses a portable topographic surveying and mapping tool table which comprises a workbench, wherein four inner thread supporting legs are fixedly connected to four corners of the bottom of the workbench, a first screw rod is sleeved in an inner thread of each inner thread supporting leg, the bottom end of the first screw rod extends to the position below the inner thread supporting leg and is fixedly connected with an installation block, a universal wheel with a lock is rotatably installed at the bottom of the installation block, a U-shaped handle is fixedly connected to the right side of the workbench, two pressing strips are arranged above the workbench, a first L-shaped rod is fixedly connected to the left side of the pressing strip on the left side of the two pressing strips, and a second L-shaped rod is fixedly connected to the right side of the pressing strip on the right side of the two pressing strips. The device is reasonable in design, the U-shaped handle and the four universal wheels with the locks are arranged, the whole device is convenient to move, carry and transport, paper with different specifications is convenient to press and fix, the phenomenon that surveying and mapping paper is blown up when the device works outdoors is avoided, and stable surveying and mapping operation is guaranteed.

Description

Portable survey and drawing topography instrument platform

Technical Field

The utility model relates to the technical field of topographic tool tables, in particular to a portable topographic tool table.

Background

The topographic surveying and mapping is a basic precondition of the geographic surveying and mapping, and is used for measuring, collecting, analyzing, describing and the like relevant data distributed in a geographic space, information such as the ground relief state, the slope change, the land utilization condition and the like of a certain area can be comprehensively mastered through surveying and mapping a topographic map, and when a surveying and mapping staff carries out surveying and mapping work outside, a tool table is required to be used for supporting operation;

present survey and drawing topography toolkit, its most lack the paper to different specifications and compress tightly fixed shortcoming, when the outdoor use, especially strong wind weather, there is often the phenomenon that wind blows the survey and drawing paper, and then influence the accurate normal going on of survey and drawing work, and be not convenient for remove the survey and drawing toolkit, current mode through artifical transport wastes time and energy, be not convenient for transport and carry, can not satisfy the user demand, therefore we have proposed a portable survey and drawing topography toolkit and are used for solving above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides a portable topographic tool table.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a portable topographic tool table comprises a workbench, four inner thread supporting legs are fixedly connected to four corners of the bottom of the workbench, a first screw rod is sleeved in an inner thread of each inner thread supporting leg, the bottom end of the first screw rod extends to the position below the inner thread supporting leg and is fixedly connected with a first installation block, a universal wheel with a lock is rotatably installed at the bottom of the first installation block, a U-shaped handle is fixedly connected to the right side of the workbench, two pressing strips are arranged above the workbench, a first L-shaped rod is fixedly connected to the left side of the pressing strip on the left side of the two pressing strips, a second L-shaped rod is fixedly connected to the right side of the pressing strip on the right side of the two pressing strips, an installation hole is formed in the right side of the workbench, the bottom end of the second L-shaped rod extends into the installation hole, two sliding sleeves are fixedly connected to the inner walls of the bottoms of the installation holes, a positioning block is slidably sleeved in the sliding sleeves, and the tops of the two positioning blocks are fixedly connected with the same, the bottom of the first L-shaped rod is fixedly connected with the left side of the top of the movable plate, the first groove is formed in the top of the movable plate, the circular groove is formed in the inner wall of the left side of the first groove, the vertical driving mechanism is slidably mounted in the circular groove, the thread driving mechanism is rotatably mounted between the inner walls of the two sides of the first groove, the thread sleeve of the second L-shaped rod is arranged on the thread driving mechanism, the vertical driving mechanism is slidably mounted on the thread driving mechanism, the vertical driving mechanism is matched with the two pressing strips, and the vertical driving mechanism is hinged to the inner wall of the bottom of the mounting hole.

Preferably, vertical actuating mechanism includes the movable block of slidable mounting in the circular recess, fixedly connected with second installation piece between the top inner wall of circular recess and the bottom inner wall, fixedly connected with first spring between the left side of second installation piece and the right side of movable block, sliding sleeve is equipped with the carriage release lever in the circular recess, the left end of carriage release lever extends to the left side and the fixedly connected with knob of workstation, the movable block rotates the right-hand member of installing at the carriage release lever, it has the stripper bar of two slope settings to articulate between the bottom of movable block and the bottom inner wall of mounting hole, a plurality of second springs of fixedly connected with between the bottom of movable plate and the bottom inner wall of mounting hole.

Preferably, the thread driving mechanism comprises a second screw rotatably installed between inner walls of two sides of the first groove, the bottom end of the second L-shaped rod extends into the first groove, the second L-shaped rod is in threaded sleeve connection with the second screw, the top of the movable plate is fixedly connected with a positioning rod, the second L-shaped rod is in sliding sleeve connection with the positioning rod, the left end of the second screw extends into the circular groove and is fixedly connected with a square rod, the movable rod is in sliding sleeve connection with the square rod, the second installation block and the movable block are both in sleeve connection with the square rod, and the first spring is movably sleeved on the square rod.

Preferably, the bottom of the pressing strip is fixedly bonded with an anti-skid rubber sheet, and the bottom of the anti-skid rubber sheet is in movable contact with the top of the workbench.

Preferably, the inner wall of one side that two sliding sleeves are close to each other is all seted up spacing hole, the equal fixedly connected with stopper in one side that two locating pieces are close to each other, stopper and the spacing hole sliding connection who corresponds.

Preferably, the inner wall of the bottom of the circular groove is provided with a first through hole, the extrusion rod is located in the first through hole and is not in contact with the inner wall of the first through hole, the inner wall of the top of the circular groove is provided with a sliding hole, and the top of the moving block is fixedly connected with a sliding block which is in sliding connection with the sliding hole.

Preferably, the left side of the moving block is fixedly connected with a connecting pipe, the connecting pipe is sleeved on the square rod, the right end of the moving rod is fixedly connected with a bearing, and the inner side of the inner ring of the bearing is fixedly connected with the outer side of the connecting pipe.

Preferably, one side of the second L-shaped rod is provided with a threaded hole and a rectangular hole, the threaded hole is in threaded connection with the second screw, the inner wall of the rectangular hole is in sliding connection with the outer side of the positioning rod, the right end of the moving rod is provided with a square hole, and the inner wall of the square hole is in sliding connection with the outer side of the square rod.

Preferably, one side of the moving block is provided with a second through hole, one side of the second mounting block is provided with a third through hole, and the square rod is positioned in the first through hole and the second through hole and is not in contact with the inner walls of the first through hole and the second through hole.

Preferably, the top of the moving plate is fixedly connected with two supporting blocks, and one sides of the two supporting blocks, which are close to each other, are fixedly connected with two ends of the positioning rod respectively.

Compared with the prior art, the utility model has the beneficial effects that:

through the working table, the internal thread supporting leg, the pressing bar, the first L-shaped rod, the first mounting block, the first screw rod, the second L-shaped rod, the mounting hole, the movable plate, the sliding sleeve, the positioning block, the second spring, the first groove, the second screw rod, the positioning rod, the circular groove, the square rod, the movable block, the extrusion rod, the first spring is matched with the second mounting block, the U-shaped handle and the four universal wheels with locks are arranged, the whole device is convenient to move, and further the carrying and the transportation of personnel are convenient, when the height position of the working table needs to be adjusted when the working table is moved to a surveying and mapping place, the universal wheels with the locks are lifted to be separated from the ground, then the first mounting block is rotated to drive the corresponding first screw rod to rotate in the internal thread supporting leg and move downwards, so that the height of the working table is changed, when the height of the working table is adjusted to a proper height, the first mounting block is stopped to be rotated independently, the levelness of the workbench can be adjusted;

when the paper for surveying and mapping needs to be pressed and fixed, firstly, the knob is rotated in the forward direction to drive the movable rod to rotate, the movable rod drives the second screw rod to rotate through the square rod, the second screw rod rotates to drive the second L-shaped rod to move leftwards, the second L-shaped rod drives the pressing strip on the right side to move leftwards, so that the distance between the two pressing strips is changed, when the distance between the two pressing strips is adjusted according to the width of the paper, the knob is stopped to rotate, then the knob is pushed rightwards to drive the movable rod to slide rightwards on the square rod, the movable rod drives the movable block to move rightwards through the bearing and the connecting pipe and compress the first spring, the movable block extrudes the extrusion rod to move and rotate in position, the reaction force of extrusion drives the movable plate to move upwards through the movable block and stretch the movable plate, and drives the two pressing strips to move upwards through the first L-shaped rod and the second L-shaped rod, the press strips drive the corresponding anti-skid rubber sheets to be separated from the top of the workbench upwards, the paper can be placed below the two anti-skid rubber sheets at the moment, the pushing force on the knob is released immediately, the first spring elastic force in a compressed state drives the moving block to pull the extrusion rod to move leftwards and rotate, the rotating force of the extrusion rod and the elastic force of the first spring simultaneously drive the moving plate to move downwards, the moving plate drives the two press strips and the two anti-skid rubber sheets to press downwards and fix the paper through the first L-shaped rod and the second L-shaped rod, and the phenomenon that the paper is blown up when the paper works outdoors is avoided.

The device is reasonable in design, the U-shaped handle and the four universal wheels with the locks are arranged, the whole device is convenient to move, carry and transport, paper with different specifications is convenient to press and fix, the phenomenon that surveying and mapping paper is blown up when the device works outdoors is avoided, and stable surveying and mapping operation is guaranteed.

Drawings

FIG. 1 is a schematic diagram of a portable topographic tool table according to the present invention;

FIG. 2 is a schematic cross-sectional view of FIG. 1;

fig. 3 is an enlarged schematic view of a portion a in fig. 2.

In the figure: 100 workbench, 101 internal thread support legs, 1 pressing bar, 2 first L-shaped rods, 3 first mounting blocks, 4 first screw rods, 5 second L-shaped rods, 6 mounting holes, 7 moving plates, 8 sliding sleeves, 9 positioning blocks, 10 second springs, 11 first grooves, 12 second screw rods, 13 positioning rods, 14 circular grooves, 15 square rods, 16 moving rods, 17 moving blocks, 18 extrusion rods, 19 first springs and 20 second mounting blocks.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-3, a portable topographic tool table for surveying and mapping comprises a workbench 100, four inner thread supporting legs 101 are fixedly connected to four corners of the bottom of the workbench 100, a first screw rod 4 is sleeved in the inner thread of each inner thread supporting leg 101, the bottom end of the first screw rod 4 extends to the lower side of the inner thread supporting leg 101 and is fixedly connected with a first mounting block 3, a universal wheel with a lock is rotatably mounted at the bottom of the first mounting block 3, a U-shaped handle is fixedly connected to the right side of the workbench 100, two pressing strips 1 are arranged above the workbench 100, a first L-shaped rod 2 is fixedly connected to the left side of the pressing strip 1 on the left side of the two pressing strips 1, a second L-shaped rod 5 is fixedly connected to the right side of the pressing strip 1, a mounting hole 6 is formed in the right side of the workbench 100, the bottom end of the second L-shaped rod 5 extends into the mounting hole 6, two sliding sleeves 8 are fixedly connected to the inner wall of the bottom of the mounting hole 6, the sliding sleeve 8 is internally and slidably sleeved with positioning blocks 9, the tops of the two positioning blocks 9 are fixedly connected with the same moving plate 7, the bottom end of the first L-shaped rod 2 is fixedly connected with the left side of the top of the moving plate 7, the top of the moving plate 7 is provided with a first groove 11, the inner wall of the left side of the first groove 11 is provided with a circular groove 14, a vertical driving mechanism is slidably installed in the circular groove 14, a threaded driving mechanism is rotatably installed between the inner walls of the two sides of the first groove 11, the second L-shaped rod 5 is in threaded sleeve connection with the threaded driving mechanism, the vertical driving mechanism is in sliding sleeve connection with the threaded driving mechanism, the vertical driving mechanism is matched with the two pressing strips 1, and the vertical driving mechanism is hinged to the inner wall of the bottom of the mounting hole 6;

the vertical driving mechanism comprises a moving block 17 which is slidably mounted in the circular groove 14, a second mounting block 20 is fixedly connected between the top inner wall and the bottom inner wall of the circular groove 14, a first spring 19 is fixedly connected between the left side of the second mounting block 20 and the right side of the moving block 17, a moving rod 16 is slidably sleeved in the circular groove 14, the left end of the moving rod 16 extends to the left side of the workbench 100 and is fixedly connected with a knob, the moving block 17 is rotatably mounted at the right end of the moving rod 16, two obliquely arranged extrusion rods 18 are hinged between the bottom of the moving block 17 and the bottom inner wall of the mounting hole 6, and a plurality of second springs 10 are fixedly connected between the bottom of the moving plate 7 and the bottom inner wall of the mounting hole 6;

the thread driving mechanism comprises a second screw 12 rotatably arranged between the inner walls of the two sides of a first groove 11, the bottom end of a second L-shaped rod 5 extends into the first groove 11, the second L-shaped rod 5 is in thread fit on the second screw 12, the top of a movable plate 7 is fixedly connected with a positioning rod 13, the second L-shaped rod 5 is in slide fit on the positioning rod 13, the left end of the second screw 12 extends into a circular groove 14 and is fixedly connected with a square rod 15, a movable rod 16 is in slide fit on the square rod 15, a second mounting block 20 and a movable block 17 are both in slide fit on the square rod 15, a first spring 19 is movably fit on the square rod 15, the utility model has reasonable design, and the arrangement of a U-shaped handle and four universal wheels with locks is convenient for moving the whole device, and the portable transportation is convenient for press the paper of different specifications admittedly, avoids the phenomenon that survey and drawing paper is blown up when outdoor work, guarantees to stabilize the survey and drawing operation.

In the utility model, the bottom of the press strip 1 is fixedly bonded with an anti-skid rubber sheet, the bottom of the anti-skid rubber sheet is movably contacted with the top of the workbench 100, the inner walls of the two adjacent sides of the sliding sleeves 8 are respectively provided with a limiting hole, the adjacent sides of the two positioning blocks 9 are respectively fixedly connected with a limiting block, the limiting blocks are slidably connected with the corresponding limiting holes, the inner wall of the bottom of the circular groove 14 is provided with a first through hole, an extrusion rod 18 is positioned in the first through hole and is not contacted with the inner wall of the first through hole, the inner wall of the top of the circular groove 14 is provided with a sliding hole, the top of the moving block 17 is fixedly connected with a sliding block, the sliding block is slidably connected with the sliding hole, the left side of the moving block 17 is fixedly connected with a connecting pipe, the connecting pipe is sleeved on the square rod 15, the right end of the moving rod 16 is fixedly connected with a bearing, the inner side of the bearing is fixedly connected with the outer side of the connecting pipe, one side of the second L-shaped rod 5 is provided with a threaded hole and a rectangular hole, the threaded hole is in threaded connection with the second screw 12, the inner wall of the rectangular hole is in sliding connection with the outer side of the positioning rod 13, the right end of the moving rod 16 is provided with a square hole, the inner wall of the square hole is in sliding connection with the outer side of the square rod 15, one side of the moving block 17 is provided with a second through hole, one side of the second mounting block 20 is provided with a third through hole, the square rod 15 is positioned in the first through hole and the second through hole and is not in contact with the inner walls of the first through hole and the second through hole, the top of the moving plate 7 is fixedly connected with two supporting blocks, one sides of the two supporting blocks, which are close to each other, are respectively and fixedly connected with the two ends of the positioning rod 13, the device has reasonable design, the U-shaped handle and the four universal wheels with locks are arranged, and the whole device is convenient to move, and the portable transportation is convenient for press the paper of different specifications admittedly, avoids the phenomenon that survey and drawing paper is blown up when outdoor work, guarantees to stabilize the survey and drawing operation.

The working principle is as follows: when in use, the whole device is convenient to move through the arrangement of the U-shaped handle and the four universal wheels with locks, the mode that the U-shaped handle is matched with the four universal wheels with the lock to push the whole device is convenient for personnel to carry and transport, when the device is moved to a surveying and mapping place and the height position of the workbench 100 is adjusted according to the use requirement, firstly, the corresponding universal wheel with the lock is lifted to be separated from the ground, then the first mounting block 3 is rotated to drive the corresponding first screw rod 4 to rotate, the first screw rod 4 rotates in the corresponding internal thread supporting leg 101 and moves downwards, and along with the movement of the first screw rod 4, so that the height of the worktable 100 is changed, and when the worktable is adjusted to a proper height, the first mounting block 3 stops rotating, in addition, the levelness of the workbench 100 can be adjusted by independently rotating the first mounting block 3, so that the phenomenon that the workbench 100 is placed unstably due to uneven ground is reduced;

when the paper for surveying and mapping needs to be pressed and fixed, firstly, the distance between the two pressing strips 1 is adjusted according to the width of the paper, when the adjustment is carried out, the forward rotation knob drives the moving rod 16 to rotate, the moving rod 16 drives the square rod 15 to rotate through the square hole, the square rod 15 drives the second screw rod 12 to rotate, under the action of the threaded hole formed on the second L-shaped rod 5, the second screw rod 12 rotates to drive the second L-shaped rod 5 to move leftwards, the second L-shaped rod 5 slides on the positioning rod 13, the second L-shaped rod 5 drives the pressing strip 1 on the right side to move leftwards, the pressing strip 1 on the right side drives the anti-skid rubber adhered and fixed with the pressing strip 1 on the right side to move leftwards, the distance between the two pressing strips 1 is changed along with the movement of the pressing strip 1 on the right side, when the distance between the two pressing strips 1 is adjusted according to the width of the paper, the rotation knob is stopped, under the action of the thread locking force between the threaded hole and the second screw rod 12, the pressing strips 1 are fixed, then the knob is pushed rightwards, the knob drives the moving rod 16 to slide rightwards on the square rod 15, the moving rod 16 drives the moving block 17 to move rightwards through the bearing and the connecting pipe, the moving block 17 compresses the first spring 19 rightwards, the moving block 17 presses the position of the extrusion rod 18 to move and rotate, the reaction force of the extrusion rod 18 drives the moving block 17 to move upwards while rotating, the moving block 17 drives the moving plate 7 to move upwards, the moving plate 7 drives the two positioning blocks 9 to respectively slide upwards in the corresponding sliding sleeves 8, the moving plate 7 upwards stretches the second spring 10, the moving plate 7 drives the first L-shaped rod 2 and the second screw 12 to move upwards, the second screw 12 drives the second L-shaped rod 5 to move upwards, the first L-shaped rod 2 and the second L-shaped rod 5 respectively drive the corresponding pressing strips 1 to move upwards, the pressing strips 1 drive the corresponding anti-skid rubber sheets to upwards separate from the top of the workbench 100, at the moment, paper can be placed on the workbench 100 and is positioned below the two anti-skid rubber sheets, then the pushing force on the knob is released, the first spring 19 in a compressed state is reset, the elastic force of the first spring 19 drives the moving block 17 to move leftwards, the moving block 17 pulls the extrusion rod 18 leftwards to move and rotate, the rotating force of the extrusion rod 18 and the elastic force of the first spring 10 simultaneously drive the moving plate 7 to move downwards, the moving plate 7 drives the first L-shaped rod 2 and the second L-shaped rod 5 to move downwards, the first L-shaped rod 2 and the second L-shaped rod 5 drive the two pressing strips 1 to move downwards, the pressing strips 1 drive the corresponding anti-skid rubber sheets to press and fix the paper downwards, and in a mode of adjusting the transverse position of the pressing strips 1 on the right side, the pressing and fixing of the paper with different specifications can be realized, the phenomenon that the paper is blown up when the paper works outdoors can be avoided, and the stable surveying and mapping operation is ensured.

In the description of the present application, it should be further noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, a connection through an intermediate medium, and a connection between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to specific circumstances.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The utility model provides a portable survey and drawing topography tool table, includes workstation (100), four internal thread landing legs (101) of the equal fixedly connected with in bottom four corners of workstation (100), a serial communication port, internal thread landing leg (101) internal thread cover is equipped with first screw rod (4), the bottom of first screw rod (4) extends to the below of internal thread landing leg (101) and fixedly connected with first installation piece (3), the bottom of first installation piece (3) is rotated and is installed the universal wheel of area lock, the right side fixedly connected with U-shaped handle of workstation (100), the top of workstation (100) is equipped with two layering (1), lie in the left side fixedly connected with first L shape pole (2) of layering (1) on left side in two layering (1), lie in the right side fixedly connected with second L shape pole (5) on right side layering (1), mounting hole (6) have been seted up on the right side of workstation (100), the bottom end of the second L-shaped rod (5) extends into the mounting hole (6), two sliding sleeves (8) are fixedly connected to the inner wall of the bottom of the mounting hole (6), positioning blocks (9) are sleeved in the sliding sleeves (8) in a sliding mode, the tops of the two positioning blocks (9) are fixedly connected with the same movable plate (7), the bottom end of the first L-shaped rod (2) is fixedly connected with the left side of the top of the movable plate (7), the top of the movable plate (7) is provided with a first groove (11), the inner wall of the left side of the first groove (11) is provided with a circular groove (14), a vertical driving mechanism is arranged in the circular groove (14) in a sliding mode, a thread driving mechanism is rotatably arranged between the inner walls of the two sides of the first groove (11), the second L-shaped rod (5) is sleeved on the thread driving mechanism in a threaded mode, the vertical driving mechanism is sleeved on the thread driving mechanism in a sliding mode, and the vertical driving mechanism is matched with the two pressing strips (1), the vertical driving mechanism is hinged on the inner wall of the bottom of the mounting hole (6).

2. A portable topographic tool station according to claim 1, vertical actuating mechanism includes movable block (17) of slidable mounting in circular recess (14), fixedly connected with second installation piece (20) between the top inner wall of circular recess (14) and the bottom inner wall, fixedly connected with first spring (19) between the left side of second installation piece (20) and the right side of movable block (17), sliding sleeve is equipped with carriage release lever (16) in circular recess (14), the left end of carriage release lever (16) extends to the left side and the fixedly connected with knob of workstation (100), movable block (17) rotate and install the right-hand member in carriage release lever (16), it has extrusion ram (18) that two slopes set up to articulate between the bottom of movable block (17) and the bottom inner wall of mounting hole (6), a plurality of second springs (10) of fixedly connected with between the bottom of movable plate (7) and the bottom inner wall of mounting hole (6).

3. The portable topographic tool table for mapping as claimed in claim 1, wherein the screw driving mechanism comprises a second screw rod (12) rotatably mounted between the inner walls of the two sides of the first groove (11), the bottom end of the second L-shaped rod (5) extends into the first groove (11), the second L-shaped rod (5) is threadedly sleeved on the second screw rod (12), the top of the movable plate (7) is fixedly connected with a positioning rod (13), the second L-shaped rod (5) is slidably sleeved on the positioning rod (13), the left end of the second screw rod (12) extends into the circular groove (14) and is fixedly connected with a square rod (15), the movable rod (16) is slidably sleeved on the square rod (15), the second mounting block (20) and the movable block (17) are both sleeved on the square rod (15), and the first spring (19) is movably sleeved on the square rod (15).

4. A portable topographic tool table according to claim 1, wherein the bottom of the pressure strip (1) is bonded and fixed with an anti-slip rubber sheet, and the bottom of the anti-slip rubber sheet is in movable contact with the top of the workbench (100).

5. A portable topographic survey and drawing tool table according to claim 1, wherein the inner walls of the two sliding sleeves (8) close to each other are provided with limiting holes, the sides of the two positioning blocks (9) close to each other are fixedly connected with limiting blocks, and the limiting blocks are slidably connected with the corresponding limiting holes.

6. The portable topographic tool table according to claim 2, wherein the inner wall of the bottom of the circular groove (14) is provided with a first through hole, the extrusion rod (18) is located in the first through hole and is not in contact with the inner wall of the first through hole, the inner wall of the top of the circular groove (14) is provided with a sliding hole, and the top of the moving block (17) is fixedly connected with a sliding block which is in sliding connection with the sliding hole.

7. A portable topographic tool table according to claim 2, wherein a connecting pipe is fixedly connected to the left side of the moving block (17), the connecting pipe is sleeved on the square rod (15), a bearing is fixedly connected to the right end of the moving block (16), and the inner side of the inner ring of the bearing is fixedly connected to the outer side of the connecting pipe.

8. A portable topographic tool table according to claim 3, wherein one side of the second L-shaped bar (5) is provided with a threaded hole and a rectangular hole, the threaded hole is in threaded connection with the second screw (12), the inner wall of the rectangular hole is slidably connected with the outer side of the positioning bar (13), the right end of the movable bar (16) is provided with a square hole, and the inner wall of the square hole is slidably connected with the outer side of the square bar (15).

9. A portable topographic tool station according to claim 3, wherein one side of the moving block (17) is provided with a second through hole, one side of the second mounting block (20) is provided with a third through hole, and the square bar (15) is located in the first and second through holes and does not contact the inner walls of the first and second through holes.

10. A portable topographic tool station according to claim 3, wherein two support blocks are fixedly connected to the top of the moving plate (7), and the sides of the two support blocks adjacent to each other are fixedly connected to the two ends of the positioning rod (13), respectively.