CN117723034B - Device and method for keeping engineering measurement standard pole vertical in real time - Google Patents

Abstract

The invention discloses a real-time maintenance engineering measurement standard pole vertical device and a method, wherein the real-time maintenance engineering measurement standard pole vertical device comprises a supporting cylinder, a limiting ring is fixed inside the supporting cylinder, a reversing ball is clamped in the limiting ring in a rotating manner, the top of the reversing ball is fixedly connected with a shaft lever, the outer side of the shaft lever is fixedly connected with a floating barrel, the top of the shaft lever is detachably and fixedly connected with a standard pole body, and the bottom of the reversing ball is fixedly connected with a counterweight ball. According to the invention, the counterweight ball is fixed at the bottom of the reversing ball, the shaft lever is fixed at the top of the annular ball, the floating barrel is fixed at the outer side of the shaft lever, the marker post body is fixed at the top end of the shaft lever, the buoyancy of the floating barrel in water always brings the shaft lever to keep a vertical arrangement state, and the counterweight ball at the bottom of the reversing ball can pull the shaft lever by gravity downwards vertically, so that the marker post body can automatically keep a vertical state in the use process, and the efficiency of adjusting the marker post position is improved.

Description

Device and method for keeping engineering measurement standard pole vertical in real time

Technical Field

The invention relates to the technical field of grouting material production, in particular to a device and a method for keeping engineering measurement benchmarks vertical in real time.

Background

The engineering measurement marker post is a tool for engineering measurement as an indication measurement point, the common method is to use a level gauge and the marker post to perform measurement in a matched manner, the marker post is required to be perpendicular to the horizontal plane in measurement, the measurement precision can be ensured, the marker post is usually made of a wood rod or a hollow iron rod, the outer side of the rod is coated with paint or scales with red and white phases, the bottom is conical, and the marker post is convenient to stand on the ground for measurement;

at present, in the measuring process, an operator is usually required to hold the marker post for fixing, the working intensity of manual operation is increased by holding the marker post for a long time, the marker post is easy to shake and unstable, and the correct angle of the marker post is ensured by the feeling of the operator, so that the marker post and the horizontal plane are difficult to ensure to be vertical due to the complexity of the landform and the inconsistent technical level of the operator, the measurement is easy to be inaccurate, and the construction quality is not ensured;

In view of this, it is desirable to design a device for maintaining the vertical position of the post in real time for engineering measurement, automatically adjusting and maintaining the vertical position of the post in real time, and improving the efficiency of the post support and fixation in engineering measurement.

Disclosure of Invention

The invention aims to provide a device and a method for keeping engineering measurement targets vertical in real time so as to solve the problems in the background technology.

In order to achieve the above purpose, the present invention provides the following technical solutions:

The utility model provides a vertical device of engineering survey pole and method are kept in real time, includes a real-time vertical device of engineering survey pole that keeps, including a support section of thick bamboo, the inside of a support section of thick bamboo is fixed with the spacing ring, the inside rotation joint of spacing ring has the switching-over ball, the top fixedly connected with axostylus axostyle of switching-over ball, the outside fixedly connected with float bowl of axostylus axostyle, the fixedly connected with pole body can be dismantled on the top of axostylus axostyle, the bottom fixedly connected with counter weight ball of switching-over ball, the bottom of counter weight ball is provided with constraint mechanism, constraint mechanism includes the locating shaft with support section of thick bamboo inner bottom surface fixedly connected, the outside sliding sleeve of locating shaft has the sleeve pipe, the bottom surface fixedly connected with circular chassis, the outside of circular chassis is annular equiangular rotation and is connected with a plurality of arc splint, the outside sliding connection of sleeve pipe has two symmetrically distributed's L shape poles, two fixedly connected with drive ring between the top of L shape pole, the bottom surface transmission of drive ring and arc splint is leaned on, the bottom surface transmission of drive ring is fixed with haulage rope two, the support section of thick bamboo inner bottom surface fixedly connected with counter weight ball, the open end connection has a locking mechanism to open end of a fixed connection section of thick bamboo.

The method is further characterized in that: the outside of spacing ring is fixed with two symmetrically distributed connecting axle, connecting axle and the inboard fixed connection of supporting cylinder, the axostylus axostyle closes with the mark post body soon and is connected.

The method is further characterized in that: the outer side of counter weight ball bottom evenly is fixed with a plurality of spacing needles, the top surface of circular chassis and the inboard of arc splint all are fixed with the sponge piece, sponge piece and spacing needle activity grafting.

The method is further characterized in that: one end of the L-shaped rod, which is away from the driving ring, is fixed with a lantern ring, and the lantern ring is in sliding sleeve joint with the sleeve.

The method is further characterized in that: the outside of arc splint is fixed with spacing post, spacing post is arranged in the outside of actuating ring.

The method is further characterized in that: one end of the arc clamping plate is fixed with a first rotating seat, the outer side of the circular chassis is annular and is fixed with a plurality of second rotating seats at equal angles, and the first rotating seat is rotationally connected with the second rotating seat through a rotating shaft.

The method is further characterized in that: the outer side of the rotating shaft is sleeved with a torsion spring, and a first traction rope is fixedly connected between the round chassis and the lantern ring.

The method is further characterized in that: the utility model discloses a support section of thick bamboo, including support section of thick bamboo, the bottom surface of support section of thick bamboo can be dismantled and be fixed with the toper seat, the top surface of toper seat is fixed with the rotating block, the screw thread groove that closes with the rotating block soon is seted up to support the bottom surface of section of thick bamboo, one side of barrel casing from down up internal diameter increase, the outside of barrel casing is fixed with the hand (hold).

Preferably: the locking mechanism comprises two supporting blocks fixedly connected with the open end of the cylinder cover, the two supporting blocks are rotationally connected with a bidirectional screw rod, two clamping plates fixedly connected with a crank are rotationally connected to the outer side of the bidirectional screw rod, and the two clamping plates are fixedly connected with the open end of the cylinder cover.

The invention also provides a method for keeping the engineering measurement marker post vertical device in real time, which comprises the following steps:

Step one: the conical seat at the bottom of the supporting cylinder is inserted into the soil on the ground by the hand-held handle;

Step two: the buoyancy of the floating barrel in water always brings the shaft lever to keep a vertical arrangement state, and the counterweight ball at the bottom of the reversing ball can apply a vertical downward gravity traction to the shaft lever, so that the marker post body can automatically keep a vertical state in the use process;

Step three: pulling the traction rope II upwards to enable the driving ring to move upwards along the sleeve, and enabling the driving ring to approach to the centers of the arc clamping plates;

step four: the limiting needle at the outer side of the counterweight ball can be inserted into the sponge block at the inner side of the arc-shaped clamping plate, so that the counterweight ball is initially limited and fixed in the supporting cylinder, and the marker post body can be arranged in a vertical state and cannot shake;

step five: the crank is rotated to enable the bidirectional screw rod between the two supporting blocks to rotate, and the two clamping plates clamp and fix the marker post body, so that the marker post body keeps the vertical position in real time.

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

Through being fixed with the spacing ring in the inside of supporting the section of thick bamboo, the inboard rotation joint of spacing ring has the switching-over ball, the bottom of switching-over ball is fixed with the counter weight ball, the top of annular ball is fixed with the axostylus axostyle, the outside of axostylus axostyle is fixed with the float bowl, the top of axostylus axostyle is fixed with the marker post body, through the inside water injection of a proper amount of support section of thick bamboo, make the float bowl float in the surface of water, when ground is the slope, support section of thick bamboo and barrel casing are although the slope is arranged on ground, but still can keep vertical state arrangement at the axostylus axostyle body, because the buoyancy of float bowl in the water is kept vertical arrangement state all the time with the axostylus axostyle, the counter weight ball of adding switching-over ball bottom can have a vertical decurrent gravity traction to the axostylus axostyle, so the marker post body can keep vertical state automatically in the use, save the manual setting of marker post body to vertical state, save the manpower, be favorable to improving the efficiency of marker post position adjustment.

The two clamping plates are in close mutual movement by rotating the crank at the end part of the bidirectional screw rod, so that the two clamping plates clamp and fix the marker post body in a clamping manner in parallel to the inclination direction of the supporting cylinder, and the position of the marker post body is further limited and fixed to the marker post body in a vertical state, thereby being beneficial to keeping the marker post body in a vertical arrangement state in real time;

Through being fixed with the sponge piece in the bottom surface of circular chassis, when ground is level ground, the counter weight ball is arranged directly over circular chassis, at this moment, can make circular chassis upwards move along the arc splint through the drive girdle, the limiting needle can peg graft on the sponge piece of circular chassis, the marker post body also can be fixed to vertical state by spacing when making ground be the horizontal plane, through setting up the barrel casing to from down up the internal diameter grow gradually, conveniently support a section of thick bamboo and barrel casing place when inclining ground, the barrel casing is close to the position of floating barrel can reserve great floating barrel activity space, make the floating barrel bring the axostylus axostyle to adjust vertical position, in addition, the barrel casing can rotate the inclined upper portion of ground inclined plane with the great region of internal diameter on the barrel casing according to the incline direction on the ground in advance, the great displacement adjustment position of barrel casing inside internal diameter is supplied in the later stage to the convenience, save the barrel casing occupation space, also make things convenient for the barrel casing to rotate to the position of not putting and use.

Drawings

FIGS. 1-2 are schematic views of the overall structure of the present invention from different viewing angles;

FIG. 3 is a schematic view of the internal structure of the cartridge cover in the present invention;

FIG. 4 is a schematic view showing the structure of the support cylinder and the cylinder cover in an inclined state in the invention;

FIG. 5 is a schematic view of the structure of the stop collar, the reversing ball, the counterweight ball and the shaft lever in the invention;

FIG. 6 is a schematic view of the structure of the binding mechanism of the present invention;

FIG. 7 is a schematic view of the structure of the cartridge housing and locking mechanism of the present invention;

FIG. 8 is a schematic view of the structure of the support cylinder and the conical seat in the invention.

In the figure: 100. a support cylinder; 110. a barrel cover; 111. a handle; 120. a limiting ring; 121. a connecting shaft; 130. a conical seat; 131. a rotating block; 200. reversing balls; 210. a shaft lever; 211. a floating barrel; 212. a marker post body; 300. a weight ball; 310. a limiting needle; 400. a binding mechanism; 410. positioning a shaft; 420. a sleeve; 430. a circular chassis; 431. a first traction rope; 440. an arc clamping plate; 441. a limit column; 500. an L-shaped rod; 510. a drive ring; 511. a traction rope II; 520. a collar; 600. a locking mechanism; 610. a support block; 620. a two-way screw rod; 630. and a clamping plate.

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.

Example 1

Referring to fig. 1-6, in an embodiment of the present invention, a real-time engineering measurement standard pole vertical device includes a supporting cylinder 100, a limiting ring 120 is fixed inside the supporting cylinder 100, a reversing ball 200 is rotatably clamped inside the limiting ring 120, a shaft lever 210 is fixedly connected to the top of the reversing ball 200, a float 211 is fixedly connected to the outer side of the shaft lever 210, a standard pole body 212 is detachably and fixedly connected to the top of the shaft lever 210, a counterweight ball 300 is fixedly connected to the bottom of the reversing ball 200, a binding mechanism 400 is provided at the bottom of the counterweight ball 300, the binding mechanism 400 includes a positioning shaft 410 fixedly connected to the inner bottom of the supporting cylinder 100, a sleeve 420 is slidably sleeved outside the positioning shaft 410, a circular chassis 430 is fixedly connected to the bottom of the sleeve 420, a plurality of arc clamping plates 440 are rotatably connected to the outer side of the circular chassis 430 in an annular equal angle, two symmetrically distributed L-shaped rods 500 are fixedly connected between the tops of the sleeve 420, a driving ring 510 is in driving contact with the bottom of the arc clamping plates 440, a rope 511 is fixedly connected to the bottom of the driving ring 511, and an opening 110 is connected to the opening 110 of the supporting cylinder 100.

Specifically, after a proper amount of water is injected into the supporting cylinder 100 and the cylinder cover 110, the supporting cylinder 100 is placed at a place to be tested, the floating barrel 211 in the cylinder cover 110 is provided with buoyancy in water, the shaft rod 210 is conveniently driven to be vertically arranged in the cylinder cover 110, meanwhile, the counterweight ball 300 at the bottom of the reversing ball 200 can drive the reversing ball 200 to be always in a vertical arrangement state with the shaft rod 210 inside the limiting ring 120 by means of self gravity, the marker post body 212 at the top of the shaft rod 210 can be conveniently kept in a vertical arrangement state in real time, the circular chassis 430 and the arc clamping plates 440 are arranged below the counterweight ball 300, the driving ring 510 is driven to rotate with the arc clamping plates 440 in the middle by the traction rope two 511, the position of the counterweight ball 300 is conveniently limited by the arc clamping plates 440, and the position of the marker post body 212 is further limited.

As shown in fig. 5, in the embodiment, two symmetrically distributed connecting shafts 121 are fixed on the outer side of the limiting ring 120, the connecting shafts 121 are fixedly connected with the inner side of the supporting cylinder 100, the shaft lever 210 is screwed with the marker post body 212, a plurality of limiting pins 310 are uniformly fixed on the outer side of the bottom of the weight ball 300, sponge blocks are fixed on the top surface of the circular chassis 430 and the inner side of the arc-shaped clamping plate 440, and the sponge blocks are movably inserted with the limiting pins 310.

In this embodiment, the limiting ring 120 is supported and fixed inside the supporting cylinder 100 by the connecting shaft 121, and when the limiting ring 120 is arranged obliquely along with the supporting cylinder 100, the reversing ball 200 can rotate to a vertical position with the shaft lever 210, and after the limiting needle 310 is inserted into the sponge block, the counterweight ball 300 is limited to move inside the supporting cylinder 100, so that the reversing ball 200 and the shaft lever 210 are limited to move.

As shown in fig. 6, in this embodiment, a collar 520 is fixed at one end of the L-shaped rod 500 facing away from the driving ring 510, the collar 520 is slidably sleeved with the sleeve 420, a limiting post 441 is fixed at the outer side of the arc-shaped clamping plate 440, the limiting post 441 is arranged at the outer side of the driving ring 510, a first rotating seat is fixed at one end of the arc-shaped clamping plate 440, a plurality of second rotating seats are fixed at the outer side of the circular chassis 430 in an annular equal angle, the first rotating seat and the second rotating seat are rotationally connected through a rotating shaft, a torsion spring is sleeved at the outer side of the rotating shaft, and a first traction rope 431 is fixedly connected between the circular chassis 430 and the collar 520.

In this embodiment, the driving ring 510 can move along the positioning shaft 410 towards the counterweight ball 300, the limiting post 441 limits the driving ring 510 from leaving the arc clamping plate 440 in the process of pushing the arc clamping plate 440 to move, the arc clamping plate 440 can rotate along the edge of the circular chassis 430, the second traction rope 511 is released, the first traction rope 431 moves down along the positioning shaft 410 under the gravity action of the arc clamping plate 440, the driving ring 510 and the circular chassis 430, the collar 520 is connected with the circular chassis 430 together, the circular chassis 430 can move down synchronously along with the downward movement of the collar 520, and when the driving ring 510 is not pulled to move up by the second traction rope 511, the plurality of arc clamping plates 440 rotate away from the circular chassis 430 due to the elasticity of the torsion spring, so that the arc clamping plate 440 can rotate back to the initial position.

As shown in fig. 8, in the present embodiment, a conical seat 130 is detachably fixed to the bottom surface of the supporting cylinder 100, a rotating block 131 is fixed to the top surface of the conical seat 130, a thread groove connected with the rotating block 131 in a screwing manner is formed in the bottom surface of the supporting cylinder 100, the inside diameter of one side of the cylinder cover 110 increases from bottom to top, and a handle 111 is fixed to the outside of the cylinder cover 110.

In this embodiment, the conical seat 130 may be inserted to fix the support cylinder 100 to the ground, and when the ground is a cement ground, the conical seat 130 may be detached in advance, and the support cylinder 100 may be directly placed on the cement ground.

In specific implementation, the conical seat 130 at the bottom of the supporting cylinder 100 is inserted into the soil on the ground by holding the handle 111, when the ground is inclined, the supporting cylinder 100 and the cylinder cover 110 are obliquely arranged on the ground (refer to fig. 4 in the specification), the buoyancy of the floating barrel 211 in water always keeps a vertical arrangement state with the shaft lever 210, the counterweight ball 300 at the bottom of the reversing ball 200 can exert a vertical downward gravity traction on the shaft lever 210, so that the marker post body 212 can automatically keep a vertical state in the use process, the driving ring 510 moves upwards along the sleeve 420 by pulling the traction rope two 511 upwards by hand, the driving ring 510 is centered and approaches with the arc clamping plates 440, the limiting needle 310 at the outer side part of the counterweight ball 300 is promoted to be inserted into the sponge block at the inner side of the arc clamping plates 440, and the counterweight ball 300 is initially limited and fixed in the supporting cylinder 100, so that the marker post body 212 can keep a vertical arrangement state and can not shake.

Example 2

On the basis of the first embodiment, in order to keep the pole body 212 adjusted to the vertical position in a vertical state in real time, a more firm and durable fixation of the pole body 212 is achieved.

As shown in fig. 7, in this embodiment, the locking mechanism 600 includes two supporting blocks 610 fixedly connected to the open end of the barrel housing 110, the two supporting blocks 610 are rotatably connected to a bidirectional screw rod 620, two clamping plates 630 fixedly connected to the open end of the barrel housing 110 are screwed and connected to the outer side of the bidirectional screw rod 620, and a crank is fixedly connected to one end of the bidirectional screw rod 620.

In this embodiment, the crank at the end of the bidirectional screw 620 is rotated to make the two clamping plates 630 screwed to the bidirectional screw 620 move close to each other, so that the two clamping plates 630 clamp and fix the marker post body 212 from the inclined direction parallel to the supporting cylinder 100, and the position of the marker post body 212 is adjusted to be in a vertical state, which is beneficial for the marker post body 212 to maintain a vertical arrangement state in real time.

In particular, when the marker post body 212 has been adjusted to a vertically arranged state, the crank is rotated to rotate the bidirectional screw rod 620 between the two supporting blocks 610, the two clamping plates 630 rotatably connected with the bidirectional screw rod 620 move close to each other, and the two clamping plates 630 clamp and fix the marker post body 212, at this time, the two clamping plates 630 are parallel to the direction of the ground inclination, so that the marker post body 212 cannot be moved with the two clamping plates 630 in the process of clamping and fixing the marker post body 212, and when the marker post body 212 is not used, the marker post body 212 in the hand-held and fixed state or the hand-held handle 111 can be used to move the marker post body 212 in the hand-held and fixed state.

The application also provides a method for keeping the engineering measurement marker post vertical device in real time, which specifically comprises the following steps:

step one: the conical seat 130 at the bottom of the supporting cylinder 100 is inserted into the soil on the ground by the hand-held handle 111;

step two: the buoyancy of the float 211 in the water always keeps a vertical arrangement state along with the shaft lever 210, and the counterweight ball 300 at the bottom of the reversing ball 200 can apply a vertical downward gravity traction to the shaft lever 210, so that the marker post body 212 can automatically keep a vertical state in the use process;

step three: pulling the second traction rope 511 upward to move the driving ring 510 upward along the sleeve 420, wherein the driving ring 510 is centered and close to the plurality of arc-shaped clamping plates 440;

step four: the limiting needle 310 at the outer side part of the weight ball 300 can be inserted into the sponge block at the inner side of the arc-shaped clamping plate 440, so that the weight ball 300 is initially limited and fixed in the supporting cylinder 100, and the marker post body 212 can be arranged in a vertical state and cannot shake;

Step five: rotating the crank rotates the bi-directional screw 620 between the two support blocks 610, and the two clamping plates 630 clamp and fix the pole body 212, so that the pole body 212 maintains the vertical position in real time.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (4)

1. The utility model provides a real-time vertical device of engineering survey pole, includes a supporting section of thick bamboo, its characterized in that, the inside of supporting section of thick bamboo is fixed with the spacing ring, the inside rotation joint of spacing ring has the switching-over ball, the top fixedly connected with axostylus axostyle of switching-over ball, the outside fixedly connected with float bowl of axostylus axostyle, the top of axostylus axostyle can be dismantled fixedly connected with the sighting rod body, the bottom fixedly connected with counter weight ball of switching-over ball, the bottom of counter weight ball is provided with constraint mechanism, constraint mechanism includes the locating shaft with supporting section of thick bamboo inner bottom fixed connection, the outside slip cup joint sleeve pipe of locating shaft, the bottom surface fixedly connected with circular chassis of sleeve pipe, the outside of circular chassis is annular equiangular rotation and is connected with a plurality of arc splint, the outside sliding connection of sleeve pipe has two symmetrically distributed L shape poles, fixedly connected with the actuating ring between the top of L shape pole, the actuating ring is close with the bottom transmission of arc splint, the bottom surface of actuating ring is fixedly connected with haulage rope two, the open end of supporting cylinder rotates and is connected with the open end of a section of thick bamboo cover, open end fixedly connected with locking mechanism of a locking cylinder;

two symmetrically distributed connecting shafts are fixed on the outer side of the limiting ring, the connecting shafts are fixedly connected with the inner side of the supporting cylinder, the shaft rod is screwed with the marker post body, a plurality of limiting pins are uniformly fixed on the outer side of the bottom of the counterweight ball, sponge blocks are fixed on the top surface of the circular chassis and the inner side of the arc-shaped clamping plate, the sponge blocks are movably inserted with the limiting pins, a lantern ring is fixed at one end of the L-shaped rod, which is far away from the driving ring, the sleeve ring is in sliding sleeve joint with the sleeve, a limit column is fixed on the outer side of the arc clamping plate, the limit column is arranged on the outer side of the driving ring, a first rotating seat is fixed at one end of the arc clamping plate, a plurality of second rotating seats are fixed on the outer side of the circular chassis in an annular equal angle mode, the first rotating seat and the second rotating seat are in rotating connection through a rotating shaft, a torsion spring is sleeved on the outer side of the rotating shaft, and a first traction rope is fixedly connected between the circular chassis and the sleeve ring.

2. The device for keeping engineering measurement standard in real time vertical according to claim 1, wherein the bottom surface of the supporting cylinder is detachably fixed with a conical seat, the top surface of the conical seat is fixed with a rotating block, the bottom surface of the supporting cylinder is provided with a thread groove in screwed connection with the rotating block, one side of the cylinder cover is increased in inner diameter from bottom to top, and the outer side of the cylinder cover is fixed with a handle.

3. The device for keeping the engineering measurement standard pole vertical in real time according to claim 2, wherein the locking mechanism comprises two supporting blocks fixedly connected with the open end of the cylinder cover, the two supporting blocks are rotationally connected with a bidirectional screw rod, the outer side of the bidirectional screw rod is rotationally connected with two clamping plates fixedly connected with a crank, and the two clamping plates are fixedly connected with one end of the bidirectional screw rod.

4. A method for maintaining an engineering survey pole vertical in real time according to claim 3, comprising the steps of:

Step one: the conical seat at the bottom of the supporting cylinder is inserted into the soil on the ground by the hand-held handle;

Step two: the buoyancy of the floating barrel in water always brings the shaft lever to keep a vertical arrangement state, and the counterweight ball at the bottom of the reversing ball can apply a vertical downward gravity traction to the shaft lever, so that the marker post body can automatically keep a vertical state in the use process;

Step three: pulling the traction rope II upwards to enable the driving ring to move upwards along the sleeve, and enabling the driving ring to approach to the centers of the arc clamping plates;

step four: the limiting needle at the outer side of the counterweight ball can be inserted into the sponge block at the inner side of the arc-shaped clamping plate, so that the counterweight ball is initially limited and fixed in the supporting cylinder, and the marker post body can be arranged in a vertical state and cannot shake;

step five: the crank is rotated to enable the bidirectional screw rod between the two supporting blocks to rotate, and the two clamping plates clamp and fix the marker post body, so that the marker post body keeps the vertical position in real time.