CN115479585B

CN115479585B - A inclination measuring equipment for engineering survey

Info

Publication number: CN115479585B
Application number: CN202211358980.3A
Authority: CN
Inventors: 马勇; 李伟才; 赵永胜; 程强; 张欢欢
Original assignee: Shandong Jiubo Intelligent Equipment Co ltd
Current assignee: Shandong Jiubo Intelligent Equipment Co ltd
Priority date: 2022-11-02
Filing date: 2022-11-02
Publication date: 2023-02-21
Anticipated expiration: 2042-11-02
Also published as: CN115479585A

Abstract

The invention discloses a dip angle measuring device for engineering measurement, and relates to the technical field of engineering measurement. The inclination angle measuring equipment for engineering measurement comprises a supporting plate, wherein the side wall of the supporting plate is provided with an adsorption mechanism used for adsorbing the inclination angle measuring equipment on an engineering building, the side wall of the supporting plate is fixedly connected with a connecting plate, the upper side wall of the connecting plate is connected with a rotating plate through a first rotating shaft in a rotating mode, and the lower side wall of the rotating plate is provided with a limiting mechanism used for limiting the first rotating shaft. Can be when carrying out dynamic measurement, when engineering building takes place to rock, carry out the speed limit to the swing speed of gravity line pointer, simultaneously, play fine damping buffering effect to its swing to reduce the swing range of gravity line pointer, make it can stop fast after receiving to rock, thereby make the measurement to the inclination more accurate, and, can mark the fluctuation range at inclination, thereby make the measuring effect to the inclination better.

Description

A inclination measuring equipment for engineering survey

Technical Field

The invention relates to the technical field of engineering measurement, in particular to a dip angle measuring device for engineering measurement.

Background

The inclination angle measurement is to measure the angular displacement, generally adopts an inclinometer to measure, attaches the inclinometer to the structure during measurement, and measures and reads the angular displacement of the structure by taking a gravity action line as a reference, which is one of engineering measurement. The structure test is based on experimental technique, measures relevant parameters capable of reflecting the actual working performance of the structure or the component, and provides important basis for judging the bearing capacity and the safety reserve of the structure. The angular displacement is an important measurement parameter in a structural test and reflects the overall working condition of the structure, and common inclinometers comprise a level tube inclinometer and a resistance strain inclinometer.

At present, many experimental researches are carried out at home and abroad aiming at the aspect of the anti-seismic performance of the structure, particularly more static tests are carried out aiming at the anti-seismic performance of the components or the nodes, in the anti-seismic static tests, the real-time angular displacement of the components or the nodes becomes very important measurement parameters, and an inclinometer needing to carry out dynamic angular displacement measurement becomes a necessary test tool for the anti-seismic tests. Although the conventional dip meter can dynamically measure the dip of a member or a node, the component or the node can shake synchronously to drive a gravity action line component to shake during measurement, so that the accuracy of a measurement result can be caused when the angular displacement of a reading structure is measured by taking a gravity action line as a reference.

Disclosure of Invention

The present invention is directed to a tilt angle measuring device for engineering measurement to solve the above-mentioned problems of the background art.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an inclination measuring equipment for engineering survey, includes the backup pad, the lateral wall of backup pad is provided with and is used for adsorbing its adsorption apparatus structure on the engineering building, and the lateral wall fixedly connected with connecting plate of backup pad, the last lateral wall of connecting plate rotates through first pivot and is connected with the rotor plate, and the lower lateral wall of rotor plate is provided with and is used for carrying out spacing stop gear to first pivot, the last lateral wall fixedly connected with fixed plate of rotor plate, and the last lateral wall fixedly connected with L shaped plate of fixed plate, the last lateral wall fixedly connected with bracing piece of L shaped plate, and the upper end fixedly connected with arc of bracing piece, the lateral wall of arc is provided with the angle sign, and the lateral wall of L shaped plate rotates through the second pivot and is connected with the gravity line pointer, the lower extreme fixedly connected with iron plate of gravity line pointer, and the lateral wall of gravity line pointer is provided with and is used for carrying out marking mechanism of marking off mark on the arc, the lateral wall of L shaped plate is provided with the speed-limiting mechanism that is used for restricting the second pivot rotational speed, and the last lateral wall of rotor plate is provided with the buffer gear that is used for buffering to the gravity line pointer.

Preferably, the adsorption mechanism comprises fixed insertion tubes which are symmetrically arranged on the side wall of the supporting plate, one end of each fixed tube is fixedly connected with a sucker, a piston is slidably connected in each fixed tube, and the piston moves through the moving mechanism.

Preferably, the moving mechanism comprises a U-shaped plate fixedly connected to the side wall of the supporting plate, a first sleeve rod fixedly connected to the side wall of the U-shaped plate is sleeved on the side wall of the first sleeve rod, a first sleeve pipe is sleeved on the side wall of the first sleeve pipe, a movable plate is fixedly connected to the other end of the first sleeve pipe, one end of the piston is fixed to the side wall of the movable plate, a threaded sleeve is fixedly connected to the side wall of the movable plate, a threaded rod is connected to the inner thread of the threaded sleeve in a threaded mode, the other end of the threaded rod is rotatably connected to the side wall of the U-shaped plate, and a rocking wheel is fixedly connected to the other end of the threaded rod.

Preferably, the marking mechanism comprises a sliding rod inserted in the side wall of the gravity line pointer, a marking pen is fixedly connected to one end, close to the arc-shaped plate, of the sliding rod, and the sliding rod is connected with the side wall of the gravity line pointer through a first resetting mechanism.

Preferably, the first reset mechanism comprises two first T-shaped guide rods which are fixedly connected to the side wall of the gravity line pointer and symmetrically arranged, a sliding plate is sleeved on the side wall of each first T-shaped guide rod, the other end of each sliding rod is fixed to the side wall of each sliding plate, and a first spring is sleeved on the side wall of each first T-shaped guide rod.

Preferably, speed limit mechanism includes fixed connection at the mounting panel of L shaped plate lateral wall, and the lateral wall fixedly connected with friction ring of mounting panel, the fixed cover of lateral wall of second pivot is equipped with solid fixed ring, and solid fixed ring's lateral wall is connected with the metal ball that a plurality of arrays set up through flexible subassembly, the metal ball slides at solid fixed ring's inside wall.

Preferably, flexible subassembly includes the second sleeve pipe that fixed connection set up at a plurality of arrays of retaining ring lateral wall, and sliding connection has the sliding plate in the second sleeve pipe, the tip fixedly connected with second loop bar of sliding plate, and the other end of second loop bar is fixed with the lateral wall of metal ball, the lateral wall cover of second loop bar is equipped with the second spring.

Preferably, stop gear includes the connecting axle of fixed connection at first pivot lower extreme, and the fixed cover of the lateral wall of connecting axle is equipped with the lantern ring, the spacing groove that a plurality of arrays set up is seted up to the lateral wall of lantern ring, and the lower lateral wall of rotor plate is connected with the stopper through second canceling release mechanical system, stopper and spacing groove offset.

Preferably, the second reset mechanism comprises a connecting block fixedly connected to the lower side wall of the connecting plate, two third T-shaped guide rods symmetrically arranged are inserted into the side wall of the connecting block, one end of each third T-shaped guide rod is fixed to the side wall of the limiting block, and a third spring is sleeved on the side wall of each third T-shaped guide rod.

Preferably, buffer gear includes first installation piece and the second installation piece of fixed connection lateral wall on the rotor plate, and the lateral wall fixedly connected with first magnet of first installation piece, the lateral wall fixedly connected with second magnet of second installation piece, and second magnet and first magnet heteropolarity are relative.

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

(1) This kind of an inclination measuring equipment for engineering survey, through setting up adsorption apparatus structure etc, when needs measure, support the sucking disc tightly on the glossy surface of engineering building element or node, and rotate and shake the wheel, the rotation that shakes the wheel drives the rotation of threaded rod, and then drive the movable plate and remove to the direction that is close to and shakes the wheel, the synchronous motion of piston is driven in the removal of movable plate, thereby make and form the negative pressure in the sucking disc, and then adsorb on the surface of engineering building, thereby make the measurement to the engineering building inclination convenient and fast more.

(2) This kind of an inclination measuring equipment for engineering survey, through setting up speed limit mechanism, when measuring, when engineering building takes place to rock, can drive the gravity line pointer and swing, this moment, the rotation of gravity line pointer drives the rotation of second pivot, the rotation of second pivot drives the synchronous rotation of solid fixed ring and metal ball, thereby make the metal ball move to the outside under the centrifugal force effect simultaneously, sliding disk and second cover pole move to the direction of keeping away from solid fixed ring, the second spring is compressed, thereby make the inside wall counterbalance friction of metal ball and friction ring, thereby can carry out the speed limit to the swing speed of second pivot, reduce the swing range of second pivot and gravity line pointer, make the gravity line pointer can the rapid stop after receiving to rock, thereby make the measurement to the inclination more accurate.

(3) This kind of an inclination measuring equipment for engineering survey, through setting up buffer gear etc, when engineering building takes place to rock, can drive the gravity line pointer and swing, the swing of gravity line pointer drives the synchronous swing of iron plate, and be electromagnetic damping motion between second magnet and first magnet, can play fine damping buffering effect to its swing, reduce the swing range of second pivot and gravity line pointer, make the gravity line pointer can receive to rock the back and can stop fast, thereby make the measurement to the inclination more accurate.

(4) This kind of an inclination measuring equipment for engineering survey, through setting up marking mechanism etc. when measuring, the gravity line pointer can swing, and the gravity line pointer drives the marker pen when swinging and carries out synchronous rotation to can rule the mark on the arc, the measuring is waited to be measured and is accomplished the back, can confirm the fluctuation range at inclination through the sign of ruling, thereby make the measuring effect to the inclination better.

Drawings

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

FIG. 2 is a schematic perspective view of another embodiment of the present invention;

FIG. 3 is a schematic view of the marking mechanism of the present invention;

FIG. 4 is a schematic structural view of a spacing mechanism according to the present invention;

FIG. 5 is an enlarged schematic view of the structure at A in FIG. 1;

FIG. 6 is an enlarged view of the structure at B in FIG. 2;

FIG. 7 is an enlarged view of the structure at C in FIG. 3;

fig. 8 is an enlarged schematic view of the structure at D in fig. 4.

In the figure: 1. a support plate; 2. a limiting mechanism; 201. a connecting shaft; 202. a collar; 203. a limiting groove; 204. a limiting block; 3. a second reset mechanism; 301. connecting blocks; 302. a third T-shaped guide rod; 303. a third spring; 4. a marking mechanism; 401. a slide bar; 402. a marking pen; 5. a first reset mechanism; 501. a first T-shaped guide rod; 502. a sliding plate; 503. a first spring; 6. a speed limiting mechanism; 601. mounting a plate; 602. a friction ring; 603. a fixing ring; 604. a metal ball; 7. a telescopic assembly; 701. a second sleeve; 702. a sliding disk; 703. a second loop bar; 704. a second spring; 8. a buffer mechanism; 801. a first mounting block; 802. a second mounting block; 803. a second magnet; 804. a first magnet; 9. an adsorption mechanism; 901. a fixed tube; 902. a suction cup; 903. a piston; 10. a moving mechanism; 1001. a U-shaped plate; 1002. a first loop bar; 1003. a first sleeve; 1004. a threaded sleeve; 1005. a threaded rod; 1006. shaking the wheel; 1007. moving the plate; 11. a connecting plate; 12. a rotating plate; 13. a fixing plate; 14. an L-shaped plate; 15. a support bar; 16. an arc-shaped plate; 17. identifying an angle; 18. a second rotating shaft; 19. a gravity line pointer; 20. an iron block; 21. a first rotating shaft.

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. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

Referring to fig. 1 to 8, the present invention provides a technical solution: the utility model provides an inclination measuring equipment for engineering survey, including backup pad 1, the lateral wall of backup pad 1 is provided with and is used for adsorbing its adsorption apparatus 9 on the engineering building, and the lateral wall fixedly connected with connecting plate 11 of backup pad 1, the last lateral wall of connecting plate 11 is connected with rotor plate 12 through first pivot 21 rotation, and the lower lateral wall of rotor plate 12 is provided with and is used for carrying out spacing stop gear 2 to first pivot 21, the last lateral wall fixedly connected with fixed plate 13 of rotor plate 12, and the last lateral wall fixedly connected with L shaped plate 14 of fixed plate 13, the last lateral wall fixedly connected with bracing piece 15 of L shaped plate 14, and the upper end fixedly connected with arc 16 of bracing piece 15, the lateral wall of arc 16 is provided with angle sign 17, and the lateral wall of L shaped plate 14 is connected with gravity line pointer 19 through second pivot 18 rotation, the lower extreme fixedly connected with iron plate 20 of gravity line pointer 19, and the lateral wall of gravity line pointer 19 is provided with the marker mechanism 4,L shaped plate 14 that is used for marking on arc 16 and is provided with the speed limiting mechanism 6 that is used for carrying out the rotational speed limit to second pivot 18, and the upside wall of rotor plate 12 is provided with the buffer gear that the buffer force pointer 19.

Please refer to fig. 1, fig. 2 and fig. 5, the adsorption mechanism 9 includes two symmetrically arranged fixing tubes 901 fixedly inserted in the side walls of the supporting plate 1, and one end of the fixing tube 901 is fixedly connected with a suction cup 902, a piston 903 is slidably connected in the fixing tube 901, and the movement of the piston 903 moves through a moving mechanism 10, when dynamic measurement is performed, when the engineering building shakes, the swing speed of the gravity line pointer 19 is limited, and meanwhile, a good damping and buffering effect is exerted on the swing of the gravity line pointer 19, so that the swing amplitude of the gravity line pointer 19 is reduced, and the gravity line pointer can be quickly stopped after shaking, so that the measurement of the inclination angle is more accurate, and the fluctuation range of the inclination angle can be marked, so that the measurement effect of the inclination angle is better.

Referring to fig. 5, the moving mechanism 10 includes a U-shaped plate 1001 fixedly connected to a sidewall of the supporting plate 1, the sidewall of the U-shaped plate 1001 is fixedly connected to a first bushing 1002, the sidewall of the first bushing 1002 is sleeved with a first bushing 1003, and another end of the first bushing 1003 is fixedly connected to a moving plate 1007, one end of the piston 903 is fixed to a sidewall of the moving plate 1007, and a sidewall of the moving plate 1007 is fixedly connected to a threaded bushing 1004, the threaded bushing 1004 is connected to a threaded rod 1005 in a threaded manner, and another end of the threaded rod 1005 is rotatably connected to a sidewall of the U-shaped plate 1001, another end of the threaded rod 1005 is fixedly connected to a rocking wheel 1006, the rocking wheel 1006 is rotated, the rotation of the rocking wheel 1006 drives the rotation of the threaded rod 1005, and further drives the moving plate 1007 to move in a direction close to the rocking wheel 1006, the moving plate 1007 drives the piston 903 to move synchronously, so that a negative pressure is formed in the suction cup 902, and further the suction cup is attached to a surface of an engineering building, and thus the measurement of an inclination angle of the engineering building is more convenient and rapid.

Referring to fig. 7, the marking mechanism 4 includes a sliding rod 401 inserted in the side wall of the gravity line pointer 19, and one end of the sliding rod 401 close to the arc plate 16 is fixedly connected with a marking pen 402, the sliding rod 401 is connected with the side wall of the gravity line pointer 19 through the first reset mechanism 5, when measurement is performed, the gravity line pointer 19 swings, and when the gravity line pointer 19 swings, the marking pen 402 is driven to synchronously rotate, so that marking can be performed on the arc plate 16, and after measurement is completed, the fluctuation range of the inclination angle can be determined through the marking mark, so that the measurement effect of the inclination angle is better.

Referring to fig. 7, the first reset mechanism 5 includes two first T-shaped guide rods 501 fixedly connected to the side walls of the gravity line pointer 19, the first T-shaped guide rods 501 are symmetrically disposed, a sliding plate 502 is sleeved on the side walls of the first T-shaped guide rods 501, the other end of the sliding rod 401 is fixed to the side walls of the sliding plate 502, and a first spring 503 is sleeved on the side walls of the first T-shaped guide rods 501, so that the marking pen 402 always abuts against the side walls of the arc-shaped plate 16, and the marking effect is ensured.

Referring to fig. 2 and 6, the speed limiting mechanism 6 includes a mounting plate 601 fixedly connected to the side wall of the L-shaped plate 14, and the side wall of the mounting plate 601 is fixedly connected to a friction ring 602, a fixing ring 603 is fixedly sleeved on the side wall of the second rotating shaft 18, and the side wall of the fixing ring 603 is connected to a plurality of metal balls 604 arranged in an array through a telescopic assembly 7, the metal balls 604 slide on the inner side wall of the fixing ring 603, when the engineering building shakes during measurement, the gravity line pointer 19 is driven to swing, at this time, the rotation of the gravity line pointer 19 drives the second rotating shaft 18 to rotate, the rotation of the second rotating shaft 18 drives the fixing ring 603 and the metal balls 604 to synchronously rotate, so that the metal balls 604 move outwards under the action of centrifugal force, the sliding disc 702 and the second sleeve rod 703 move in a direction away from the fixing ring 603, the second spring is compressed, so that the metal balls 604 rub against the inner side wall of the friction ring 602, thereby limiting the swing speed of the second rotating shaft 18, reducing the swing amplitude of the second rotating shaft 18 and the gravity line pointer 19, and enabling the pointer to stop quickly and accurately measure the inclination angle after the shaking.

Referring to fig. 6, the telescopic assembly 7 includes a plurality of second sleeves 701 fixedly connected to the side wall of the fixing ring 603, the second sleeves 701 are arranged in an array, a sliding plate 702 is slidably connected in the second sleeves 701, a second sleeve rod 703 is fixedly connected to an end of the sliding plate 702, the other end of the second sleeve rod 703 is fixed to the side wall of the metal ball 604, and a second spring 704 is sleeved on the side wall of the second sleeve rod 703 to guide and reset the movement of the metal ball 604.

Referring to fig. 4 and 8, the limiting mechanism 2 includes a connecting shaft 201 fixedly connected to the lower end of the first rotating shaft 21, a sleeve 202 is fixedly sleeved on a side wall of the connecting shaft 201, a plurality of limiting grooves 203 arranged in an array are formed in a side wall of the sleeve 202, a limiting block 204 is connected to a lower side wall of the rotating plate 12 through the second reset mechanism 3, the limiting block 204 abuts against the limiting grooves 203, when the angles of the rotating plate 12 and the gravity line pointer 19 need to be adjusted, the limiting block 204 is withdrawn from the limiting grooves 203 by pulling the third T-shaped guide rod 302, meanwhile, the third spring 303 is compressed, then, the rotating plate 12 and the gravity line pointer 19 are rotationally adjusted, after the adjustment is completed, the third T-shaped guide rod 302 is loosened, the limiting block 204 abuts against the limiting grooves 203 under the action of the third spring 303, and it is ensured that the gravity line pointer 19 can normally swing to a vertical state during measurement.

Referring to fig. 8, the second reset mechanism 3 includes a connecting block 301 fixedly connected to the lower side wall of the connecting plate 11, two third T-shaped guide rods 302 symmetrically arranged are inserted into the side wall of the connecting block 301, one end of each third T-shaped guide rod 302 is fixed to the side wall of the limiting block 204, and a third spring 303 is sleeved on the side wall of each third T-shaped guide rod 302 to guide and reset the movement of the limiting block 204.

Referring to fig. 1 and 5, the buffering mechanism 8 includes a first mounting block 801 and a second mounting block 802 fixedly connected to the upper side wall of the rotating plate 12, the side wall of the first mounting block 801 is fixedly connected with a first magnet 804, the side wall of the second mounting block 802 is fixedly connected with a second magnet 803, and the second magnet 803 is opposite to the first magnet 804 in opposite polarity, when the engineering building shakes, the gravity line pointer 19 is driven to swing, the swing of the gravity line pointer 19 drives the iron block 20 to swing synchronously, and electromagnetic damping motion is performed between the second magnet 803 and the first magnet 804, so that a good damping and buffering effect can be achieved on the swing of the engineering building, the swing amplitude of the second rotating shaft 18 and the gravity line pointer 19 is reduced, the gravity line pointer 19 can be stopped quickly after shaking, and the measurement of the inclination angle is more accurate.

The working principle is as follows: when the device is used, when measurement is needed, the sucker 902 is abutted against the smooth surface of an engineering building component or a node, the rocking wheel 1006 is rotated, the rotation of the rocking wheel 1006 drives the threaded rod 1005 to rotate, and then the moving plate 1007 is driven to move towards the direction close to the rocking wheel 1006, and the moving plate 1007 drives the piston 903 to synchronously move, so that negative pressure is formed in the sucker 902 and is adsorbed on the surface of the engineering building, and the measurement of the inclination angle of the engineering building is more convenient and rapid;

when the engineering building shakes, the gravity line pointer 19 is driven to swing, at the moment, the rotation of the gravity line pointer 19 drives the second rotating shaft 18 to rotate, the rotation of the second rotating shaft 18 drives the fixing ring 603 and the metal ball 604 to synchronously rotate, so that the metal ball 604 moves outwards under the action of centrifugal force, the sliding disc 702 and the second loop bar 703 move towards the direction far away from the fixing ring 603, the second spring 704 is compressed, the metal ball 604 is made to be in friction with the inner side wall of the friction ring 602 in an abutting mode, the swing speed of the second rotating shaft 18 can be limited, the swing amplitude of the second rotating shaft 18 and the gravity line pointer 19 is reduced, the gravity line pointer 19 can be quickly stopped after shaking, and the measurement of the inclination angle is more accurate;

meanwhile, the swinging of the gravity line pointer 19 drives the synchronous swinging of the iron block 20, and the electromagnetic damping motion is performed between the second magnet 803 and the first magnet 804, so that a good damping buffer effect can be achieved on the swinging of the iron block, the swinging amplitude of the second rotating shaft 18 and the gravity line pointer 19 is reduced, the gravity line pointer 19 can be quickly stopped after being shaken, and the measurement of the inclination angle is more accurate;

and, when measuring, gravity line pointer 19 can swing, and gravity line pointer 19 drives marker 402 when swinging and rotates in step to can mark the line on arc 16, await measuring and accomplish the back, can confirm the fluctuation range at inclination through the sign of drawing a line, thereby make the measuring effect to the inclination better.

Claims

1. An inclination measuring device for engineering measurements, comprising a support plate (1), characterized in that: the utility model discloses a construction method, including the following steps, the lateral wall of backup pad (1) is provided with and is used for its adsorption mechanism (9) that adsorbs on engineering building, and the lateral wall fixedly connected with connecting plate (11) of backup pad (1), the last lateral wall of connecting plate (11) is connected with rotor plate (12) through first pivot (21) rotation, and the lower lateral wall of rotor plate (12) is provided with and is used for carrying out spacing stop gear (2) to first pivot (21), the last lateral wall fixedly connected with fixed plate (13) of rotor plate (12), and the last lateral wall fixedly connected with L shaped plate (14) of fixed plate (13), the last lateral wall fixedly connected with bracing piece (15) of L shaped plate (14), and the upper end fixedly connected with arc (16) of bracing piece (15), the lateral wall of arc (16) is provided with angle sign (17), and the lateral wall of L shaped plate (14) is connected with gravity line pointer (19) through second pivot (18) rotation, the lower extreme fixedly connected with iron plate (20) of gravity line pointer (19), and the lateral wall of gravity line pointer (19) is provided with and is used for carrying out the mark mechanism (4) that the marking on arc (16) the marking line, the rotation speed limiting mechanism (6) of rotation, and the lateral wall (6) that the rotation is provided with the rotation speed limiting mechanism (6) that the rotation is carried out the rotation, and buffer mechanism (6) that the rotation speed limiting mechanism (6) is carried out the rotation, and buffer mechanism (6) to the upper side of rotation, and buffer mechanism (6), and the upper side of rotation of L shaped plate (16) is provided with the upper side of rotation of L shaped plate (16), and buffer mechanism (16), and the rotation of L shaped plate (16), and the buffer pointer (16), and is provided with arc plate (16), and buffer mechanism (16), and is provided with the buffer mechanism (16), and the upper side wall (18) is provided with the buffer mechanism (16), and is provided with the buffer mechanism (6) of L shaped plate (16), and is provided with the upper side wall of gravity line (12), and is provided with the rotation of gravity line pointer ( (8) (ii) a

The adsorption mechanism (9) comprises two symmetrically-arranged fixed tubes (901) fixedly inserted into the side wall of the support plate (1), one end of each fixed tube (901) is fixedly connected with a sucker (902), a piston (903) is connected in the fixed tube (901) in a sliding mode, the piston (903) moves through a moving mechanism (10), the moving mechanism (10) comprises a U-shaped plate (1001) fixedly connected to the side wall of the support plate (1), the side wall of the U-shaped plate (1001) is fixedly connected with a first sleeve rod (1002), the side wall of the first sleeve rod (1002) is sleeved with a first sleeve pipe (1003), the other end of the first sleeve pipe (1003) is fixedly connected with a moving plate (1007), one end of the piston (903) is fixed to the side wall of the moving plate (1007), the side wall of the moving plate (1007) is fixedly connected with a threaded sleeve (1004), the threaded sleeve (1004) is connected with a threaded sleeve (1005) in a threaded manner, the other end of the threaded sleeve (1005) is rotatably connected with the side wall of the U-shaped plate (1001), the other end of the threaded rod (1005) is fixedly connected with a rocking wheel (4), the sliding mechanism (19) comprises a pointer (401) inserted into the side wall of the sliding line (19), and a marker pen pointer (401) close to the marker pen needle bar (401), the slide rod (401) is connected with the side wall of the gravity line pointer (19) through a first reset mechanism (5), the first reset mechanism (5) comprises two first T-shaped guide rods (501) which are fixedly connected with the side wall of the gravity line pointer (19) and symmetrically arranged, a sliding plate (502) is sleeved on the side wall of each first T-shaped guide rod (501), the other end of the slide rod (401) is fixed with the side wall of the sliding plate (502), a first spring (503) is sleeved on the side wall of each first T-shaped guide rod (501), the speed limiting mechanism (6) comprises a mounting plate (601) which is fixedly connected with the side wall of an L-shaped plate (14), a friction ring (602) is fixedly connected with the side wall of the mounting plate (601), a fixing ring (603) is fixedly sleeved on the side wall of the second rotating shaft (18), a plurality of metal balls (604) arranged in an array are connected with the side wall of the fixing ring (603) through a telescopic assembly (7), the metal balls (604) slide on the inner side wall of the fixing ring (603), the metal balls (7) slide on the inner side wall of the fixing ring (603), a second sleeve (701) fixedly connected with the side wall of the second sleeve (703) arranged in a plurality of the fixing ring (701), and a second sleeve (701) and a second sleeve (702) and a second sleeve (701) fixed with the end part (702) fixed sleeve (701) and a second sleeve (702) fixed with the end of the slide rod (701), the side wall of the second sleeve rod (703) is sleeved with a second spring (704), the limiting mechanism (2) comprises a connecting shaft (201) fixedly connected to the lower end of the first rotating shaft (21), and the side wall of the connecting shaft (201) is fixedly sleeved with a lantern ring (202), the side wall of the lantern ring (202) is provided with a plurality of spacing grooves (203) which are arranged in an array, the lower side wall of the rotating plate (12) is connected with a limiting block (204) through a second reset mechanism (3), the limiting block (204) is abutted against the limiting groove (203), the second reset mechanism (3) comprises a connecting block (301) fixedly connected with the lower side wall of the connecting plate (11), and two third T-shaped guide rods (302) which are symmetrically arranged are inserted into the side wall of the connecting block (301), one end of the third T-shaped guide rod (302) is fixed with the side wall of the limiting block (204), and the side wall of the third T-shaped guide rod (302) is sleeved with a third spring (303), the buffer mechanism (8) comprises a first mounting block (801) and a second mounting block (802) which are fixedly connected with the upper side wall of the rotating plate (12), and the side wall of the first mounting block (801) is fixedly connected with a first magnet (804), the side wall of the second mounting block (802) is fixedly connected with a second magnet (803), and the second magnet (803) is opposite to the first magnet (804) in opposite polarity.