阅读说明：本技术 一种漂浮式的激光测距装置 (Floating type laser ranging device ) 是由 李光耀 张华� 李红侠 乔昕 于 2021-09-08 设计创作，主要内容包括：本发明提供一种漂浮式的激光测距装置,涉及激光测距技术领域,包括激光测距仪,壳体一、水压杆、连杆、T形块、固定板一、配重块一和固定板二,激光测距仪枢接在壳体一上,固定板一和固定板二设置在壳体一内,水压杆设置在固定板一的底部,并与固定板一竖直滑动连接,固定板二上设置有十字滑道,配重块一滑动连接在十字滑道内,T形块设置在十字滑道上,且T形块与固定板二竖直滑动连接,固定板一上设置有支撑杆,连杆的一端与水压杆的顶部铰接,另一端与远离水压杆的T形块的底部铰接,且连杆铰接在支撑杆上。该发明可实现在水面上测距,同时在遇到水面波浪时也可以自动调节配重块一的位置从而使得激光测距始终处于水平状态,使得测距更加准确。(The invention provides a floating laser ranging device, which relates to the technical field of laser ranging and comprises a laser range finder, a shell I, a water pressure rod, a connecting rod, a T-shaped block, a fixing plate I, a balancing weight I and a fixing plate II, wherein the laser range finder is pivoted on the shell I, the fixing plate I and the fixing plate II are arranged in the shell I, the water pressure rod is arranged at the bottom of the fixing plate I and is vertically and slidably connected with the fixing plate I, a cross slide way is arranged on the fixing plate II, the balancing weight I is slidably connected in the cross slide way, the T-shaped block is arranged on the cross slide way and is vertically and slidably connected with the fixing plate II, a supporting rod is arranged on the fixing plate I, one end of the connecting rod is hinged with the top of the water pressure rod, the other end of the connecting rod is hinged with the bottom of the T-shaped block far away from the water pressure rod, and the connecting rod is hinged on the supporting rod. The invention can realize ranging on the water surface, and can automatically adjust the position of the first balancing weight when meeting water surface waves, so that the laser ranging is always in a horizontal state, and the ranging is more accurate.)

1. The utility model provides a float laser rangefinder of formula, includes laser range finder (1), the both sides of laser range finder (1) are provided with laser lens (2), its characterized in that: the laser range finder comprises a first shell (3), an air bag (6), a propeller (4), a motor (5), four water pressure rods (12), four connecting rods (14), four T-shaped blocks (16), a first fixing plate (11), four first counter weights (20) and a second fixing plate (17), wherein the laser range finder (1) is pivoted on the first shell (3), the motor (5) and the propeller (4) are arranged on the first shell (3), the output end of the motor (5) is connected with the propeller (4), the air bag (6) is arranged on two sides of the first shell (3), the first fixing plate (11) and the second fixing plate (17) are arranged in the first shell (3), the second fixing plate (17) is positioned above the first fixing plate (11), the four water pressure rods (12) are arranged at the bottom of the first fixing plate (11) at equal angles along the circumferential direction, and the four water pressure rods (12) penetrate through the first fixing plate (11) and are vertically connected with the first fixing plate (11) in a sliding manner, a cross slideway (18) is arranged at the top of the second fixing plate (17), the cross slideway (18) consists of four branch slideways, four first counter weights (20) are respectively arranged in the branch slideways of the cross slideway (18) and are in sliding connection with the branch slideways, and first springs (19) are respectively arranged between the four first counter weights (20) and the branch slideways; the four T-shaped blocks (16) are arranged at junctions of the four branch slideways and correspond to the branch slideways, the four T-shaped blocks (16) penetrate through the second fixing plate (17) and are vertically and slidably connected with the second fixing plate (17), and a second spring (21) is arranged between the top of each T-shaped block (16) and the first shell (3); the water pressure control device is characterized in that a supporting rod (15) is arranged on the first fixing plate (11), the T-shaped blocks (16) and the water pressure rods (12) which are symmetrical to each other are in a group, one end of each connecting rod (14) is hinged to the top of the water pressure rod (12), the other end of each connecting rod is hinged to the bottom of the T-shaped block (16) far away from the water pressure rod (12), the two connecting rods (14) are hinged to the supporting rod (15) in a mutually crossed mode, the two groups of connecting rods (14) have height difference, and the water pressure rods (12) are not in contact with the water surface when the second shell (9) floats on the water surface.

2. A floating laser rangefinder apparatus as claimed in claim 1 wherein: the bottom of the water pressure rod (12) is provided with a water pressure disc (13), the water pressure disc (13) is in a hollow shape with a small upper part and a big lower part, the water pressure disc (13) is made of floating materials, and the bottom of the water pressure disc (13) is not in contact with the water surface when the shell I (3) floats on the water surface.

3. A floating laser rangefinder apparatus as claimed in claim 1 wherein: the wind power balance mechanism is arranged on two sides of the first shell (3) and used for balancing the first shell (3) when wind blows on the water surface, the wind power balance mechanism comprises a slide way (7), a scroll (26), a rack (10), a gear (24), a second balancing weight (25), an air duct (8), a wind wheel (23) and a rotating rod (22), the slide way (7) is horizontally arranged at the top of the first shell (3), the second balancing weight (25) is arranged in the slide way (7) and is in sliding connection with the slide way (7), the rack (10) is arranged at the top of the second balancing weight (25), the air duct (8) is arranged on the first shell (3), two sides of the air duct (8) are mutually penetrated, the rotating rod (22) is pivoted on the air duct (8), and the scroll (26), the wind wheel (23) and the gear (24) are coaxially connected on the rotating rod (22), and the wind wheel (23) is positioned in the air duct (8), the gear (24) is meshed with the rack (10), and one end of the outer side of the scroll (26) is connected with the air duct (8).

4. A floating laser rangefinder apparatus as claimed in claim 3 wherein: the utility model discloses a housing, including casing one (3), stabilizer mechanism, dwang (22), arc slide (28) are located the top of dwang (22), and dwang (22) are located the below at the gliding center of circular arc, ball (29) set up in arc slide (28) to with arc slide (28) sliding connection, when casing one (3) is in the horizontality, ball (29) are located the center department of arc slide (28), depression bar (27) set up the center department in the bottom of arc slide (28) down, and push down pole (27) and the vertical sliding connection of casing two (9), the bottom and dwang (22) of push down pole (27) are corresponding, be provided with spring three (31) between push down pole (27) and circular arc slide (28), the center department of circular arc slide (28) is provided with diaphragm (30), and diaphragm (30) are corresponding with the top of push down pole (27).

5. A floating laser rangefinder apparatus as claimed in claim 4 wherein: the diaphragm (30) is made of nylon material.

6. A floating laser rangefinder apparatus as claimed in claim 4 wherein: the bottom of the lower pressure lever (27) is in a semi-circular arc shape, and the rotating levers (22) correspond to each other.

7. A floating laser rangefinder apparatus as claimed in claim 1 wherein: the air bag (6) is an inflatable air bag.

Technical Field

The invention relates to the technical field of laser ranging, in particular to a floating type laser ranging device.

Background

The laser range finder is an instrument for accurately measuring the distance of a target by using laser, and because light rays are linearly transmitted and have higher transmission speed, and simultaneously can quickly obtain a value of the distance to be measured, the laser range finder is widely applied to the technical fields of buildings, indoor decoration, mapping and the like at present, wherein the laser range finder can reach a longer distance, and is widely used in the mapping field. However, in the field of surveying and mapping, due to the fact that the distance is long, the measured data are prone to being greatly deviated due to certain deflection of the laser range finder, and therefore the horizontal state of the laser range finder needs to be kept when the laser range finder is used for ranging, accuracy of measured data is guaranteed, and the accuracy of ranging is guaranteed by placing the laser range finder on the horizontal ground or on a support on the ground. However, when ranging is performed on the lake surface, certain waves often exist on the lake surface, which easily causes a certain deflection of the laser range finder on the lake surface, so that a final ranging result is not accurate.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a floating laser ranging device, which solves the problems in the background technology.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: a floating laser range finder comprises a laser range finder, wherein two sides of the laser range finder are provided with laser lenses, the laser range finder further comprises a first shell, an air bag, a screw propeller, a motor, four water pressure rods, four connecting rods, four T-shaped blocks, a first fixing plate, four first balancing weights and a second fixing plate, the laser range finder is pivoted on the first shell, the motor and the screw propeller are arranged on the first shell, the output end of the motor is connected with the screw propeller, the air bag is arranged on two sides of the first shell, the first fixing plate and the second fixing plate are arranged in the first shell, the two fixing plates are located above the first fixing plate, the four water pressure rods are arranged at the bottom of the first fixing plate at equal angles along the circumferential direction, the four water pressure rods penetrate through the first fixing plate and are vertically and slidably connected with the first fixing plate, the top of the second fixing plate is provided with a cross slide way, and the cross slide way is composed of four branch slide ways, the four first counter weights are respectively arranged in the branch slideways of the cross slideway and are in sliding connection with the branch slideways, and springs I are respectively arranged between the four first counter weights and the branch slideways; the four T-shaped blocks are arranged at the junctions of the four branch slideways and correspond to the branch slideways, the four T-shaped blocks penetrate through the second fixing plate and are vertically and slidably connected with the second fixing plate, and a second spring is arranged between the top of each T-shaped block and the first shell; the support rod is arranged on the first fixing plate, the T-shaped blocks and the water pressure rod which are symmetrical to each other form a group, one end of each connecting rod is hinged to the top of the water pressure rod, the other end of each connecting rod is hinged to the bottom of the T-shaped block far away from the water pressure rod, the two connecting rods are hinged to the support rod in an intersecting mode, the two groups of connecting rods are different in height, and the water pressure rod is not in contact with the water surface when the second shell floats on the water surface.

Preferably, the bottom of the water pressure rod is provided with a water pressure disc, the water pressure disc is in a hollow shape with a small upper part and a large lower part, the water pressure disc is made of a floating material, and the bottom of the water pressure disc is not in contact with the water surface when the shell floats on the water surface.

Preferably, the two sides of the first shell are provided with wind power balance mechanisms for balancing the first shell when wind blows on the water surface, each wind power balance mechanism comprises a slide way, a scroll, a rack, a gear, a second balancing weight, an air duct, a wind wheel and a rotating rod, the slide way is horizontally arranged at the top of the first shell, the second balancing weight is arranged in the slide way and is in sliding connection with the slide way, the rack is arranged at the top of the second balancing weight, the air duct is arranged on the first shell, the two sides of the air duct are mutually penetrated, the rotating rod is pivoted on the air duct, the scroll, the wind wheel and the gear are coaxially connected onto the rotating rod, the gear and the rack are mutually meshed, and one end of the outer side of the wind wheel is connected with the air duct.

Preferably, stabilizing mechanisms are respectively arranged on two sides of the first shell and used for stabilizing the first shell, each stabilizing mechanism comprises a second shell, a round ball and a lower pressing rod, the second shell is arranged on the first shell, one end of each rotating rod is pivoted in the second shell, an arc slideway is arranged in the second shell and is located above the rotating rod, the rotating rod is located below the center of the arc sliding, the round ball is arranged in the arc slideway and is in sliding connection with the arc slideway, when the first shell is in a horizontal state, the round ball is located at the center of the arc slideway, the lower pressing rod is arranged at the center of the bottom of the arc slideway, the lower pressing rod is vertically in sliding connection with the second shell and corresponds to the rotating rod, a third spring is arranged between the lower pressing rod and the arc slideway, and a diaphragm is arranged at the center of the arc slideway, and the diaphragm corresponds to the top of the push down rod.

Preferably, the diaphragm is made of a nylon material.

Preferably, the balloon is an inflatable balloon.

(III) advantageous effects

The invention provides a floating laser distance measuring device. The method has the following beneficial effects:

1. this float laser rangefinder of formula, through set up on fixed plate one with a vertical sliding connection pressurized-water pole of fixed plate, when the casing receives the wave, casing lopsidedness earlier on, thereby make through water with pressurized-water pole jack-up, thereby make the connecting rod of pressurized-water pole one end rise, the connecting rod of T-shaped piece one end descends, make the T-shaped piece get into in the cross slide, move the balancing weight earlier on the outside, make the center of cross slide is kept away from to the balancing weight, thereby make the casing one meet the wave on the lake surface, when the casing one takes place the slope, the balancing weight can move to one perk one side of casing, thereby make the casing one side sink to the weight aggravate, thereby guarantee to make the casing one be in the horizontality, make final measuring result more accurate.

Drawings

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

FIG. 2 is a schematic structural view of the bottom of the present invention;

FIG. 3 is a schematic view of the interior of a housing according to the present invention;

FIG. 4 is a schematic view of the internal structure of another side of the housing according to the present invention;

FIG. 5 is a schematic view of a top portion of the housing of the present invention;

FIG. 6 is a schematic structural view of the interior of the second housing of the present invention;

fig. 7 is a partially enlarged view of fig. 6A.

In the figure: 1 laser range finder, 2 laser lens, 3 casing I, 4 screw propellers, 5 motors, 6 airbags, 7 slideways, 8 air ducts, 9 casing II, 10 racks, 11 fixing plate I, 12 water pressure rods, 13 water pressure disks, 14 connecting rods, 15 supporting rods, 16T-shaped blocks, 17 fixing plate II, 18 cross slideways, 19 spring I, 20 balancing weight I, 21 spring II, 22 rotating rod, 23 wind wheel, 24 gears, 25 balancing weight II, 26 scroll 27 lower pressure rods, 28 arc slideways, 29 round balls, 30 diaphragms and 31 spring III.

Detailed Description

The embodiment of the invention provides a floating type laser range finder, which comprises a laser range finder 1, a first shell 3, an air bag 6, a propeller 4, a motor 5, four water pressure rods 12, four connecting rods 14, four T-shaped blocks 16, a first fixing plate 11, a plurality of first counter weights 20 and a second fixing plate 17, wherein laser lenses 2 are respectively arranged on two sides of the laser range finder 1, so that laser is emitted to measure the distance of an object, the bottom of the laser range finder 1 is pivoted to the top of the first shell 3, the laser range finder 1 can rotate on the top of the first shell 3, and the distance of each angle can be measured. Motor 5 and screw 4 set up on casing 3 to be located the rear side of casing 3, drive screw 4 through motor 5 and rotate, drive casing 3 moves ahead in aqueous, thereby make laser range finder 1 can reach the assigned position, convenient measurement. The air bags 6 are arranged on two sides of the first shell 3, and the air bags 6 are inflatable air bags, so that the content of air in the air bags 6 can be adjusted as required, and the first shell 3 can float on the water surface. The first shell 3 is hollow at the bottom, the first fixing plate 11 and the second fixing plate 17 are arranged in the first shell 3, and the second fixing plate 17 is located above the first fixing plate 11, so that an accommodating cavity is formed between the first fixing plate 11 and the second fixing plate. The water pressure rods 12 are arranged at the bottom of the first fixing plate 11 at equal angles along the circumferential direction, and the four water pressure rods 12 penetrate through the first fixing plate 11 and are vertically connected with the first fixing plate 11 in a sliding mode. A cross slide 18 is arranged at the top of the second fixing plate 17, the cross slide 18 is composed of four slide rails, the four slide rails correspond to the four hydraulic rods 12, the first four balancing weights 20 are arranged in the four slide rails respectively and are connected with the slide rails 18 in a sliding mode, meanwhile, a first spring 19 is arranged between the first balancing weight 20 and the slide rails, and the first balancing weight 20 is located at the center of the cross slide 18 through the elastic force of the first spring 19, so that the balance of the first shell 3 is guaranteed. Four T-shaped blocks 16 are respectively located the juncture of four slide ways, and with the vertical sliding connection of four slide ways, and be located between balancing weight one 20 and the cross slide way 18, thereby can open balancing weight one 20 to the outside during the downward motion of T-shaped block 16, the bottom of T-shaped block 16 all passes fixed plate two 17 and the vertical sliding connection of fixed plate two 17, be provided with spring two 21 simultaneously between the top of T-shaped block 16 and casing one 3, elasticity through spring two 21 makes T-shaped block 16 reset, thereby make balancing weight one 20 can reset under the effect of spring one 19. The top of the first fixing plate 11 is provided with a support rod 15, wherein the T-shaped block 16 and the water pressure rod 12 which are symmetrical to each other form a group, one end of a connecting rod 14 is hinged to the top of the water pressure rod 12, the other end of the connecting rod is hinged to the bottom of the T-shaped block 16 far away from one side of the water pressure rod 12, the T-shaped block 16 far away from the water pressure rod 12 can be driven to descend when the water pressure rod 12 ascends, and therefore the first balancing weight block 20 far away from one side of the water pressure rod 12 moves outwards. The symmetrical T-shaped blocks 16 and the two connecting rods 14 on the water pressure rod 12 are mutually crossed and hinged on the supporting rod 15, the T-shaped blocks 16 on the other group and the two connecting rods 14 on the water pressure rod 12 are also mutually crossed and hinged on the supporting rod 15, and the two groups of connecting rods 14 have height difference, so that the 4 connecting rods 14 are prevented from mutually interfering when moving.

The bottoms of the four water pressure rods 12 are respectively provided with a water pressure disc 13, the water pressure discs 13 are hollow, the upper part of each water pressure disc is small, and the lower part of each water pressure disc 13 is large, and the water pressure discs 13 are made of floating materials such as plastics. When the first shell 3 floats on a calm water surface, the amount of gas in the air bag 6 is controlled at the same time, so that the water pressure disc 13 does not contact with the water surface. When waves appear on the water surface, when the first shell 3 inclines to a certain degree, the water pressure disc 13 at the bottom of one side of the first shell 3, which inclines downwards, contacts the water surface rapidly, the water pressure disc 13 drives the water pressure rod 12 to ascend under the action of buoyancy, so that the connecting rod 14 at one end of the water pressure rod 12 moves upwards, the connecting rod 14 at the other end moves downwards (namely, the one side of the first shell 3, which inclines upwards), the T-shaped block 16 is driven to move downwards, the first balancing weight 20 is moved to the outer side of the cross slideway 18, so that the weight of one side of the first shell 3, which inclines upwards, is increased, the first shell 3, which inclines upwards, so that the first shell 3 is in a horizontal state, the laser ranging on the first shell 3 is ensured to be capable of measuring under the horizontal state, and the final measuring accuracy is ensured.

Because the measurement is carried out on the water surface, waves on the water surface are often caused by wind, when the wind blows to the whole device, the first shell 3 can be inclined, and in order to solve the influence of the wind on the horizontal state of the first shell 3, wind power balance mechanisms are arranged on two sides of the upper portion of the first shell 3 and used for balancing the first shell 3 when the wind blows on the water surface, and the accuracy of a measurement result is guaranteed. The wind power balance mechanism comprises a slide way 7, a scroll 26, a rack 10, a gear 24, a second balancing weight 25, an air duct 8, a wind wheel 23 and a rotating rod 22, wherein the slide way 7 is horizontally arranged at the top of the first shell 3, the second balancing weight 25 is arranged in the slide way 7 and is in sliding connection with the slide way 7, and the rack 10 is arranged at the top of the second balancing weight 25. The air duct 8 is arranged at the top of the first shell 3, the air duct 8 is large at two sides and small in the middle, and the two sides of the air duct 8 are communicated with each other, so that air can be blown into the air duct 8 from the two sides of the air duct 8. The rotating rod 22 is pivoted on the air duct 8 and is located at the center of the air duct 8, the wind wheel 23, the gear 24 and the scroll 26 are coaxially connected on the rotating rod 22, and the wind wheel 23 is located in the air duct 8, so that the wind wheel 23 can be driven to rotate when the wind passes through the air duct 8. One end fixed connection in the snail 26 outside is on the casing, and the one end of inboard is connected on dwang 22 to can tighten up snail 26 when dwang 22 rotates, gear 24 and rack 10 intermeshing simultaneously, make dwang 22 rotate and drive rack 10 seesaw, thereby make two 25 of balancing weights can slide around in slide 7, increase the weight of casing front and back side. When the wind is scraped on the surface of water, wind passes through the wind channel 8, drives the wind wheel 23 and rotates, makes the dwang 22 rotate and tightens up the scroll 26, and gear 24 rotates simultaneously and drives rack 10 and move to the direction that the wind blows, and balancing weight two 25 also moves along with rack 10, thereby makes one side weight increase that casing one 3 blows against the wind, prevents that casing one 3 from upwards perk owing to the one side that faces against the wind, and the removal of balancing weight two 25 in casing one 3 makes casing one 3 keep a horizontality simultaneously.

If only rely on wind balance mechanism and casing one 3 in balancing weight one 20 to keep casing one 3 balanced probably to have a problem, if casing one 3 still is in the horizontality, scrape wind through wind channel 8 can arouse balancing weight two 25's mistake to remove to lead to casing one 3 not to keep the horizontality, consequently be provided with stabilizing mean in the both sides at casing one 3 top, when preventing that casing one 3 still is in the horizontality, scrape the wind and arouse balancing weight two 25's mistake to remove. The stabilizing mechanism comprises a second shell 9, a spherical ball 29 and a lower pressing rod 27, the second shell 9 is arranged at the top of the first shell 3, is connected with the first shell 3 and is positioned at the right side of the slideway 7, and one end of the rotating rod 22, which is far away from the air duct 8, is pivoted on the second shell 9. An arc slideway 28 is arranged in the second shell 9, the arc slideway 28 is positioned above the rotating rod 22, the center of the arc slideway 28 is positioned above the rotating rod 22, a round ball 29 is arranged in the arc slideway 28, the round ball 29 is in sliding connection with the arc slideway 28, so that the round ball 29 can slide in the arc slideway 28, when the first shell 3 is in a horizontal state, the round ball 29 is positioned at the center of the arc slideway 28, and when the first shell 3 is not in the horizontal state, the round ball 29 rolls towards two sides of the arc slideway 28. The lower pressing rod 27 is located below the center of the arc slideway 28, the lower pressing rod 27 is vertically connected with the second shell 9 in a sliding mode, the third spring 31 is arranged between the lower pressing rod 27 and the arc slideway 28, the lower pressing rod 27 moves upwards through the elastic force of the third spring 31, the bottom of the lower pressing rod 27 corresponds to the rotating rod 22 and is in a semicircular arc shape, and therefore when the lower pressing rod 27 presses downwards, the bottom of the lower pressing rod 27 contacts the rotating rod 22, and the rotating rod 22 cannot rotate. A diaphragm 30 is provided at the center of the circular arc chute 28, and the diaphragm 30 is made of nylon material and corresponds to the top of the lower press rod 27. Therefore, when the first shell 3 is in a horizontal state, the round ball 29 is located above the diaphragm 30, the lower pressing rod 27 is pressed downwards, the bottom of the lower pressing rod 27 is in contact with the rotating rod 22, the rotating rod 22 cannot rotate, when the first shell 3 is not in the horizontal state, the round ball 29 rolls to one side, the lower pressing rod 27 is not pressed downwards, the lower pressing rod 27 moves upwards under the action of the spring three 31, the bottom of the lower pressing rod 27 is not in contact with the rotating rod 22, the rotating rod 22 can rotate, whether the first shell 3 is in the horizontal state can be known according to the position of the round ball 29 in the arc slideway 28, and whether the first shell 3 is in the horizontal state or not is determined through the wind power balance mechanism.

The working principle is as follows: when the floating laser ranging device is used, the air bag 6 is inflated, so that the first shell 3 can float on the water surface, the water pressure disc 13 is not contacted with the water surface, when waves appear on the water surface, one side of the first shell 3 is upwards tilted and the other side is sunk, so that the water pressure disc 13 is contacted with the water surface, the water pressure disc 13 is lifted under the action of buoyancy, the water pressure rod 12 is lifted, one end of the connecting rod 14 is driven to ascend, the other end of the connecting rod is driven to descend, the descending end of the connecting rod drives the T-shaped block 16 to downwards move, so that the first balancing weight block 20 moves towards the outer side of the cross slide way 18, the weight of one side of the first shell 3 which is upwards tilted due to the waves is increased, one side of the first shell 3 which is upwards tilted moves downwards, the first shell 3 is slowly in a horizontal state, meanwhile, the contact area between the water pressure disc 13 and the water surface is reduced, the T-shaped block 16 is slowly reset under the action of the second spring 21, and the first shell 3 is in a horizontal state when the first shell 3 is reset to a certain degree, so that the laser range finder 1 on the first housing 3 can be in a horizontal state for ranging. Meanwhile, when wind blows on the water surface and the first shell 3 is not inclined, the round ball 29 is located at the center of the arc slideway 28, and the lower pressing rod 27 is pressed downwards, so that the bottom of the lower pressing rod 27 abuts against the rotating rod 22, and the rotating rod 22 cannot rotate. When the first shell 3 is in an inclined state, the round ball 29 rolls towards one side of the arc slideway 28, the round ball is not in the center of the arc slide, the lower pressing rod 27 is not pressed downwards, the lower pressing rod 27 moves upwards under the action of the third spring 31, the bottom of the lower pressing rod 27 is not abutted against the rotating rod 22, the rotating rod 22 can rotate, the wind wheel 23 is driven to rotate when wind passes through the wind channel 8, so as to drive the gear 24 to rotate, the rack 10 moves towards one side of the windward side under the rotation of the gear 24, so that the weight of the windward side of the first shell 3 is increased, the windward side of the first shell 3 sinks, the first shell 3 keeps a horizontal state, the round ball 29 is located at the center of the arc slideway 28 again, the lower pressing rod 27 is pressed downwards, the rotating rod 22 cannot rotate, and the first shell 3 is in a horizontal state.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.