CN219736387U

CN219736387U - Measuring device

Info

Publication number: CN219736387U
Application number: CN202321210442.XU
Authority: CN
Inventors: 曾旭山
Original assignee: Building Materials Guangzhou Engineering Survey Institute Co ltd
Current assignee: Building Materials Guangzhou Engineering Survey Institute Co ltd
Priority date: 2023-05-17
Filing date: 2023-05-17
Publication date: 2023-09-22
Anticipated expiration: 2033-05-17

Abstract

The utility model discloses a measuring device which comprises a square base, wherein the top of the square base is fixedly connected with a motor, the right end of an output shaft of the motor is fixedly connected with a multi-stage electric telescopic rod, and the right side of the multi-stage electric telescopic rod is provided with a laser range finder. According to the utility model, the shielding protection can be carried out on the laser range finder when the laser range finder is not used, the risk of damage caused by false collision in the carrying process can be effectively reduced, the self-adaptive adjustment and fixation of the perpendicularity of the laser range finder can be realized through the arrangement of the universal adjusting mechanism and the elastic pressing and fixing mechanism, the phenomenon of inaccurate measurement caused by the inclination of the laser range finder in the measuring process can be effectively reduced, the measuring accuracy is improved, and the pressing and fixing damping force can be increased and adjusted after the laser range finder is used for a period of time through the arrangement of the elastic adjusting mechanism, so that the fixing stability of the laser range finder is improved.

Description

Measuring device

Technical Field

The utility model relates to the technical field of measuring equipment, in particular to a measuring device.

Background

For the temporary pit that building foundation excavated is called the foundation ditch, before the foundation ditch excavated, need be according to geology hydrologic data to combine the nearby building condition of scene, thereby decide the excavation scheme, and need make waterproof drainage work, and move in the foundation ditch when, need measure its degree of depth and pit bottom uplift state, in prior art, often carry out the degree of depth measurement to the foundation ditch bottom through handheld range finder such as the optical cable that has the scale, but in actual use, because the instability of manual operation, optical cable length is limited, foundation ditch shape size is different factor influence such as, can lead to measuring work waste time and energy, the measured data error is great, in order to solve this problem, application number: 202221157531.8 the utility model discloses a foundation pit measuring device, including automobile body and measuring subassembly, measuring subassembly includes motor, electric putter and laser rangefinder, and the lower surface of automobile body is connected and is removed the subassembly, and the motor is connected to the upper surface of automobile body, and electric putter is connected to the motor electricity, and the laser rangefinder is connected to the one end that electric putter kept away from the motor, and laser rangefinder is used for obtaining shape and the degree of depth data of foundation pit, and the inside of automobile body sets up locating component, and locating component is used for fixed automobile body; when needs carry out the foundation ditch measurement, through the mobile component that sets up on the automobile body, remove the automobile body to inside the foundation ditch, accomplish the fixed work of automobile body through the locating component of automobile body, through measuring component, can realize the basic data acquisition to the foundation ditch, replace artifical handheld measuring apparatu operation through automatic equipment, promoted measuring precision, improved measuring speed, practice thrift man-hour manpower.

The laser range finder that sets up in the above-mentioned patent can realize the measurement to the foundation ditch, its laser range finder is when using, fix in the one end of electric putter output shaft, when measuring the degree of depth of foundation ditch, need keep the vertical state of whole laser range finder, fixed mounting's laser range finder can not be according to the use needs self-adaptation regulation straightness that hangs down, when the slope is placed to whole device, then can cause the laser range finder to take place to incline, thereby influence the measurement accuracy, can not satisfy the user demand, combine the aforesaid condition, consequently we propose a measuring device.

Disclosure of Invention

The utility model aims to solve the defects in the prior art and provides a measuring device.

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

the measuring device comprises a square base, wherein the top of the square base is fixedly connected with a motor, the right end of an output shaft of the motor is fixedly connected with a multi-stage electric telescopic rod, the right side of the multi-stage electric telescopic rod is provided with a laser range finder, the transverse position of the laser range finder can be adjusted by arranging the multi-stage electric telescopic rod, four T-shaped anchor rods are arranged in the square base, the bottom ends of the T-shaped anchor rods extend to the lower part of the square base, screw threads of the square base are sleeved on the four T-shaped anchor rods, the whole device can be fixed through the four T-shaped anchor rods, the right side of the square base is fixedly connected with a protection box with the top and the right side being provided with openings, the laser range finder is positioned in the protection box, the right side of the protection box is fixedly provided with a protection plate fixedly arranged on the right side of the laser range finder through the protection box and the protection plate being matched with each other, can shelter from the protection to the laser rangefinder, the top fixedly connected with universal adjustment mechanism of laser rangefinder, multistage electric telescopic handle's output shaft right-hand member fixedly connected with mount pad, the ball groove has been seted up to the bottom of mount pad, universal adjustment mechanism movable sleeve establishes in the ball inslot, universal adjustment mechanism's setting, can adjust the inclination of laser rangefinder, the mounting groove has been seted up on the top inner wall of ball groove, universal adjustment mechanism's top in close contact has the elasticity press solid mechanism of installing in the mounting groove, through the setting of elasticity press solid mechanism, be used for pressing solid to universal adjustment mechanism, the top of elasticity press solid mechanism extends to the top of mount pad, the slip cap is equipped with elasticity adjustment mechanism on the elasticity press solid mechanism, be used for adjusting the pressure solid power of elasticity press solid mechanism between the elasticity adjustment mechanism, elasticity adjustment mechanism's top extends to the top of mount pad, the mounting seat is sleeved on the elastic adjusting mechanism through threads.

Preferably, the universal adjustment mechanism includes the balancing weight of fixed connection at laser range finder top, and the top fixedly connected with universal ball of balancing weight, and universal ball cover is established in the ball groove, and the outside bonding cladding of universal ball has the hard rubber, and the inner wall activity laminating in hard rubber and ball groove, the cooperation of balancing weight and universal ball can utilize gravity to the straightness self-adaptation of perpendicularity of laser range finder.

Preferably, the elastic pressing mechanism comprises a pressing block which is arranged in the mounting groove in a sliding mode, the bottom of the pressing block is of an arc-shaped structure, the bottom of the pressing block is fixedly connected with a plurality of sharp blocks, the sharp ends of the sharp blocks are in tight contact with the top of the hard rubber, the fixing of the universal ball can be achieved under the action of friction force between the sharp blocks and the hard rubber, the top of the pressing block is fixedly connected with a pull rod, the top of the pull rod is slidably extended to the upper portion of the mounting seat and fixedly connected with a pull ring, the top of the pressing block is fixedly connected with a compression spring which is movably sleeved on the pull rod, the compression spring is in a compression state, the compression spring is arranged in a compression state, and the downward tightening force can be always given to the sharp blocks, so that the sharp blocks can be always in tight contact with the outer side of the hard rubber, the top of the pressing block is fixedly connected with two L-shaped positioning rods, the two L-shaped positioning rods are symmetrically arranged, the top of the L-shaped positioning rods are slidably arranged above the mounting seat, and the L-shaped positioning rods are fixedly arranged on the two guide rods.

Preferably, the elastic adjusting mechanism comprises an adjusting block, the adjusting block is slidably sleeved on the pull rod, the bottom of the adjusting block is fixedly connected with the top end of the compression spring, the adjusting block is slidably sleeved on the right L-shaped positioning rod, the top of the adjusting block is rotatably provided with a T-shaped screw rod, the top of the T-shaped screw rod extends to the upper side of the mounting seat, the mounting seat is threadedly sleeved on the T-shaped screw rod, and the mounting seat and the T-shaped screw rod are in threaded connection, so that the T-shaped screw rod can rotate and vertically move.

Preferably, a first perforation with an opening at the bottom is formed in the right inner wall of the ball-shaped groove, the distance between the front inner wall and the rear inner wall of the first perforation is the same as the distance between the front side and the rear side of the balancing weight, and the distance between the front inner wall and the rear inner wall of the first perforation is smaller than the distance between the front side and the rear side of the universal ball.

Preferably, the right side bottom fixedly connected with first magnet of protection box, the recess is seted up to the left side bottom of guard plate, fixedly connected with second magnet on the right side inner wall of recess, the right side of first magnet extends to in the recess and adsorbs mutually with the left side of second magnet, the outside and the recess inner wall movable contact of first magnet, fixedly connected with connecting block between the left side of guard plate and the right side of laser range finder, through the setting of first magnet and second magnet, can realize the fixed between guard plate and the protection box fast.

Preferably, the screw hole has been seted up on the top inner wall of mounting groove, and screw hole and T shape screw rod threaded connection, the rotation groove has been seted up at the top of regulating block, and the fixed cover in rotation groove is equipped with the bearing, the inboard outside fixed connection with T shape screw rod of inner circle of bearing, and the bearing plays the effect that supplies T shape screw rod to rotate the installation.

Preferably, two universal wheels are rotatably arranged on two sides of the bottom of the square base, and the whole device can be moved through four universal wheels.

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

1. the whole device can be fixed through the arrangement of the four T-shaped anchor rods;

2. the multi-stage electric telescopic rod, the protection box and the protection plate are matched, so that the laser range finder can be shielded and protected when not in use, and the risk of mistaken collision damage in the carrying process can be effectively reduced;

3. the universal adjusting mechanism is matched with the elastic pressing mechanism, so that the perpendicularity of the laser range finder can be adaptively adjusted and fixed, the effect that the laser range finder is in inclination to influence measurement in the measurement process can be effectively reduced, the measurement accuracy is improved, and the laser range finder can be adjusted to be horizontal according to the measurement requirement for measurement;

4. through the arrangement of the elastic adjusting mechanism, the pressing damping force between the tip block and the hard rubber can be increased and adjusted after the elastic adjusting mechanism is used for a period of time, the situation that the fixing stability is reduced due to the fact that the elastic force of the compression spring is weakened after the elastic adjusting mechanism is used for a long time can be effectively reduced, and the fixing stability is improved;

according to the utility model, the shielding protection can be carried out on the laser range finder when the laser range finder is not used, the risk of damage caused by false collision in the carrying process can be effectively reduced, the self-adaptive adjustment and fixation of the perpendicularity of the laser range finder can be realized through the arrangement of the universal adjusting mechanism and the elastic pressing and fixing mechanism, the phenomenon of inaccurate measurement caused by the inclination of the laser range finder in the measuring process can be effectively reduced, the measuring accuracy is improved, and the pressing and fixing damping force can be increased and adjusted after the laser range finder is used for a period of time through the arrangement of the elastic adjusting mechanism, so that the fixing stability of the laser range finder is improved.

Drawings

Fig. 1 is a schematic perspective view of a measuring device according to the present utility model;

FIG. 2 is a schematic diagram of a measuring device according to the present utility model;

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

In the figure: 100. a square base; 101. a motor; 102. a multi-stage electric telescopic rod; 103. a laser range finder; 1. t-shaped anchor rod; 2. a protective case; 3. a protection plate; 4. a mounting base; 5. a spherical groove; 6. a universal ball; 7. hard rubber; 8. balancing weight; 9. pressing and fixing the block; 10. an L-shaped positioning rod; 11. a pull rod; 12. an adjusting block; 13. a T-shaped screw; 14. a compression spring; 15. a sharp block; 16. a pull ring; 17. and a mounting groove.

Detailed Description

The following description of the embodiments of the present utility model 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 utility model, but not all embodiments.

Referring to fig. 1-3, a measuring device comprises a square base 100, two universal wheels are rotatably installed on two sides of the bottom of the square base 100, the whole device can move through four universal wheels, a motor 101 is fixedly connected to the top of the square base 100, the right end of an output shaft of the motor 101 is fixedly connected with a multi-stage electric telescopic rod 102, a laser range finder 103 is arranged on the right side of the multi-stage electric telescopic rod 102, the principle of measuring a foundation pit by matching the motor 101, the multi-stage electric telescopic rod 102 and the laser range finder 103 is the prior art, the transverse position of the laser range finder 103 can be adjusted by setting the multi-stage electric telescopic rod 102, four T-shaped anchors 1 are arranged in the square base 100, the bottom ends of the T-shaped anchors 1 extend to the lower part of the square base 100, the screw thread sleeve of the square base 100 is arranged on the four T-shaped anchor rods 1, wherein the inner wall of the bottom of the square base 100 is provided with four anchor rod holes, the anchor rod holes are in screw thread connection with the corresponding T-shaped anchor rods 1, the whole device can be fixed through the four T-shaped anchor rods 1, the right side of the square base 100 is fixedly connected with a protection box 2 with an opening arranged at the top and the right side, a laser range finder 103 is positioned in the protection box 2, the right side of the protection box 2 is magnetically fixed with a protection plate 3 fixedly arranged on the right side of the laser range finder 103, the protection box 2 is matched with the protection plate 3 to shield and protect the laser range finder 103, the bottom of the right side of the protection box 2 is fixedly connected with a first magnet, the bottom of the left side of the protection plate 3 is provided with a groove, the right side inner wall of the groove is fixedly connected with a second magnet, the right side of the first magnet extends into the groove and is adsorbed with the left side of the second magnet, the outer side of the first magnet is in movable contact with the inner wall of the groove, a connecting block is fixedly connected between the left side of the protection plate 3 and the right side of the laser range finder 103, connection between the protection plate 3 and the laser range finder 103 is realized through the connecting block, and the fixation between the protection plate 3 and the protection box 2 can be realized quickly through the arrangement of the first magnet and the second magnet;

the top of the laser range finder 103 is fixedly connected with a universal adjusting mechanism, the right end of an output shaft of the multistage electric telescopic rod 102 is fixedly connected with a mounting seat 4, the bottom of the mounting seat 4 is provided with a spherical groove 5, the universal adjusting mechanism is movably sleeved in the spherical groove 5, the universal adjusting mechanism comprises a balancing weight 8 fixedly connected to the top of the laser range finder 103, the top of the balancing weight 8 is fixedly connected with a universal ball 6, the balancing weight 8 and the matching of the universal ball 6 can be adjusted in a self-adapting mode by utilizing gravity, the universal ball 6 is sleeved in the spherical groove 5, the outer side of the universal ball 6 is adhered and coated with a hard rubber 7, the hard rubber 7 is movably attached to the inner wall of the spherical groove 5, the right inner wall of the spherical groove 5 is provided with a first perforation with an opening at the bottom, the distance between the front inner wall of the first perforation and the rear inner wall of the balancing weight 8 is the same as the distance between the front side and the rear side of the balancing weight 8, the distance between the front inner wall of the first perforation is smaller than the distance between the front side of the first perforation and the rear side of the universal ball 6, and the distance between the front side inner wall of the first perforation is smaller than the distance between the front side of the first perforation and the rear side of the universal ball 6;

the top inner wall of the ball-shaped groove 5 is provided with a mounting groove 17, the top of the hard rubber 7 is tightly contacted with an elastic pressing mechanism arranged in the mounting groove 17, wherein the elastic pressing mechanism comprises a pressing block 9 which is sleeved in the mounting groove 17 in a sliding way, the bottom of the pressing block 9 is provided with an arc-shaped structure, the bottom of the pressing block 9 is fixedly connected with a plurality of sharp blocks 15, the tips of the sharp blocks 15 are tightly contacted with the top of the hard rubber 7, under the action of friction force between the sharp blocks 15 and the hard rubber 7, the fixation of the universal ball 6 can be realized, the top of the pressing block 9 is fixedly connected with a pull rod 11, the top end of the pull rod 11 is slidingly extended to the upper part of the mounting seat 4 and fixedly connected with a pull ring 16, the top inner wall of the mounting groove 17 is provided with a rectangular perforation, the inner wall of the rectangular perforation is slidingly sleeved with the outer side of the pull rod 11, the top of the pressing and fixing block 9 is fixedly connected with a compression spring 14 which is movably sleeved on the pull rod 11, the compression spring 14 is in a compression state, the compression spring 14 in the compression state is arranged, and can always provide downward tightening force for the pressing and fixing block 9, so that the downward tightening force is provided for the sharp block 15, the sharp block 15 can always be tightly contacted with the outer side of the hard rubber 7, the top of the pressing and fixing block 9 is fixedly connected with two L-shaped positioning rods 10, the two L-shaped positioning rods 10 are symmetrically arranged, the top of the L-shaped positioning rods 10 extends to the upper side of the mounting seat 4, the mounting seat 4 is slidably sleeved on the two L-shaped positioning rods 10, two positioning holes are formed in the inner wall of the top of the mounting groove 17, the inner wall of each positioning hole is slidably sleeved with the outer side of the corresponding L-shaped positioning rod 10, and the L-shaped positioning rods 10 play a vertical guiding effect on the pressing and fixing block 9;

the pull rod 11 is provided with an elastic adjusting mechanism in a sliding sleeve manner, the top of the elastic adjusting mechanism extends to the upper side of the mounting seat 4, the mounting seat 4 is sleeved on the elastic adjusting mechanism in a threaded manner, the elastic adjusting mechanism comprises an adjusting block 12, the adjusting block 12 is sleeved on the pull rod 11 in a sliding manner, the top of the adjusting block 12 is provided with a sliding through hole for the pull rod 11 to slide through, the bottom of the adjusting block 12 is fixedly connected with the top of the compression spring 14, the adjusting block 12 is sleeved on the right L-shaped positioning rod 10 in a sliding manner, the top of the adjusting block 12 is provided with a sliding hole, the inner wall of the sliding hole is sleeved with the outer side of the right L-shaped positioning rod 10 in a sliding manner, the top of the adjusting block 12 is rotatably provided with a T-shaped screw 13, the top of the adjusting block 12 is provided with a rotating groove, the inner ring of the rotating groove is fixedly sleeved with a bearing, the inner side of the bearing is fixedly connected with the outer side of the T-shaped screw 13, the bearing plays a role in rotating and mounting the T-shaped screw 13, the top of the T-shaped screw 13 extends to the upper side of the mounting seat 4, the mounting seat 4 is in threaded sleeve on the T-shaped screw 13, a threaded hole is formed in the inner wall of the top of the mounting groove 17, the threaded hole is in threaded connection with the T-shaped screw 13, the mounting seat 4 and the T-shaped screw 13 can move vertically while the T-shaped screw 13 rotates in a threaded connection mode, the shielding protection of the laser range finder 103 can be realized by the arrangement of the protection box 2 and the protection plate 3 when the laser range finder is not used, the risk of damage caused by false collision in the carrying process can be effectively reduced, the self-adaptive adjustment and fixation of the perpendicularity of the laser range finder 103 can be realized by the arrangement of the universal adjusting mechanism and the elastic pressing mechanism, the phenomenon of inaccurate measurement caused by the inclination of the laser range finder 103 in the measuring process can be effectively reduced, the accuracy of measurement is improved, and through the setting of elasticity adjustment mechanism, can increase the regulation to pressing the damping force after using a period, improve the fixed stability to laser range finder 103.

Working principle: the whole device is conveniently moved to a designated place through the four universal wheels, the whole device is fixed by rotating the four T-shaped anchor rods 1 to move into soil, and the laser range finder 103 is positioned in the protection box 2, so that shielding protection of the laser range finder 103 can be realized through the cooperation of the protection box 2 and the protection plate 3, and the phenomenon that the laser range finder 103 is mistakenly touched in the carrying process can be effectively reduced;

when the laser range finder 103 is required to be moved out for use, the multistage electric telescopic rod 102 is started in the forward direction, the output shaft of the multistage electric telescopic rod 102 sequentially passes through the mounting seat 4, the universal ball 6 and the balancing weight 8 to drive the laser range finder 103 to move from the protection box 2, the laser range finder 103 can be normally used, if the whole device is placed in an inclined state, the pull ring 16 is pulled upwards firstly, the pull ring 16 drives the pull rod 11 to move upwards, the pull rod 11 drives the press-fixing block 9 to move upwards, the press-fixing block 9 compresses the compression spring 14 while moving upwards, the press-fixing block 9 drives the plurality of pointed blocks 15 to be separated from the hard rubber 7 upwards, the fixation of the universal ball 6 is relieved, at the moment, the balancing weight 8 is self-adaptively rotated to a vertical state under the gravity action of the balancing weight 8, the balancing weight 8 drives the laser range finder 103 to rotate to the vertical state, the balancing weight 8 also drives the universal ball 6 to rotate in the spherical groove 5 in a self-adaptive manner, when the laser range finder 103 rotates to a vertical state, the tension on the pull ring 16 is relaxed, at the moment, the elastic force of the compression spring 14 in a compressed state drives the compression block 9 to move downwards, the compression block 9 drives the plurality of sharp blocks 15 to move downwards to be in close contact with the outer side of the hard rubber 7, the universal ball 6 can be fixed under the friction force action between the sharp blocks 15 and the hard rubber 7, so that the laser range finder 103 is fixed, the effect of self-adaptive adjustment on the perpendicularity of the laser range finder 103 is realized, the depth of a foundation pit can be measured, the effect of the measurement of the influence of the inclination of the laser range finder 103 in the measuring process can be effectively reduced, and the measuring accuracy is improved;

when the laser range finder 103 is required to be adjusted to be horizontal to measure the left and right width, the pull ring 16 can be pulled upwards again to release the fixation of the laser range finder 103, then the laser range finder 103 can be rotated to be horizontal, the pulling force of the pull ring 16 is relaxed, the fixation of the laser range finder 103 is realized, and the left and right width can be measured;

when the elastic force of the compression spring 14 is easy to weaken after long-time use, the T-shaped screw 13 can be rotated positively, the T-shaped screw 13 rotates and moves downwards, the T-shaped screw 13 drives the adjusting block 12 to move downwards, the adjusting block 12 compresses the compression spring 14, the compression degree of the compression spring 14 is increased, the compression force of the compression spring 14 on the compression block 9 is increased, the compression block 9 drives the plurality of pointed blocks 15 to increase the extrusion force of the hard rubber 7, so that the compression damping force of the hard rubber is increased, and the fixing stability is improved.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. The utility model provides a measuring device, includes return shape base (100), the top fixedly connected with motor (101) of return shape base (100), the output shaft right-hand member fixedly connected with multistage electric telescopic handle (102) of motor (101), the right side of multistage electric telescopic handle (102) is equipped with laser rangefinder (103), characterized in that, be equipped with four T anchor rods (1) in return shape base (100), return shape base (100) thread bush is established on four T anchor rods (1), the right side fixedly connected with top and right side of return shape base (100) are protection box (2) that the opening set up, laser rangefinder (103) are located protection box (2), the right side magnetism of protection box (2) is inhaled fixedly connected with guard plate (3) on laser rangefinder (103) right side, the top fixedly connected with universal adjustment mechanism of laser rangefinder (103), the output shaft right-hand member fixedly connected with mount pad (4) of multistage electric telescopic handle (102), spherical groove (5) have been seted up to the bottom of mount pad (4), universal adjustment mechanism movable sleeve sets up in spherical groove (5) and installs on the top of the elastic mechanism (17) in the top of the installation groove (17) that extends closely, the elastic pressing mechanism is provided with an elastic adjusting mechanism in a sliding sleeve manner, the top of the elastic adjusting mechanism extends to the upper side of the mounting seat (4), and the mounting seat (4) is arranged on the elastic adjusting mechanism in a threaded sleeve manner.

2. The measuring device according to claim 1, wherein the universal adjusting mechanism comprises a balancing weight (8) fixedly connected to the top of the laser range finder (103), a universal ball (6) is fixedly connected to the top of the balancing weight (8), the universal ball (6) is sleeved in the spherical groove (5), the outer side of the universal ball (6) is adhered and coated with a hard rubber (7), and the hard rubber (7) is movably attached to the inner wall of the spherical groove (5).

3. The measuring device according to claim 2, wherein the elastic pressing mechanism comprises a pressing block (9) which is sleeved in the mounting groove (17) in a sliding manner, the bottom of the pressing block (9) is of an arc-shaped structure, the bottom of the pressing block (9) is fixedly connected with a plurality of pointed blocks (15), the pointed ends of the pointed blocks (15) are tightly contacted with the top of the hard rubber (7), the top of the pressing block (9) is fixedly connected with a pull rod (11), the top of the pull rod (11) slidingly extends to the upper side of the mounting seat (4) and is fixedly connected with a pull ring (16), the top of the pressing block (9) is fixedly connected with a compression spring (14) which is movably sleeved on the pull rod (11), the compression spring (14) is in a compressed state, the top of the pressing block (9) is fixedly connected with two L-shaped positioning rods (10), the tops of the two L-shaped positioning rods (10) are symmetrically arranged, the tops of the L-shaped positioning rods (10) extend to the upper side of the mounting seat (4), and the mounting seat (4) slidingly sleeves on the two L-shaped positioning rods (10).

4. A measuring device according to claim 3, characterized in that the elastic adjusting mechanism comprises an adjusting block (12), the adjusting block (12) is slidably sleeved on the pull rod (11), the bottom of the adjusting block (12) is fixedly connected with the top end of the compression spring (14), the adjusting block (12) is slidably sleeved on the right-side L-shaped positioning rod (10), the top of the adjusting block (12) is rotatably provided with a T-shaped screw (13), the top of the T-shaped screw (13) extends to the upper side of the mounting seat (4), and the mounting seat (4) is threadedly sleeved on the T-shaped screw (13).

5. A measuring device according to claim 2, characterized in that the right side inner wall of the spherical groove (5) is provided with a first perforation with an opening at the bottom, the distance between the front side inner wall and the rear side inner wall of the first perforation being the same as the distance between the front side and the rear side of the counterweight (8), the distance between the front side inner wall and the rear side inner wall of the first perforation being smaller than the distance between the front side and the rear side of the universal ball (6).

6. The measuring device according to claim 1, wherein the right side bottom of the protection box (2) is fixedly connected with a first magnet, the left side bottom of the protection plate (3) is provided with a groove, the right side inner wall of the groove is fixedly connected with a second magnet, the right side of the first magnet extends into the groove and is adsorbed with the left side of the second magnet, the outer side of the first magnet is in movable contact with the inner wall of the groove, and a connecting block is fixedly connected between the left side of the protection plate (3) and the right side of the laser range finder (103).

7. The measuring device according to claim 4, wherein a threaded hole is formed in the inner wall of the top of the mounting groove (17), the threaded hole is in threaded connection with the T-shaped screw (13), a rotating groove is formed in the top of the adjusting block (12), a bearing is fixedly sleeved in the rotating groove, and the inner side of the inner ring of the bearing is fixedly connected with the outer side of the T-shaped screw (13).

8. A measuring device according to claim 1, characterized in that two universal wheels are rotatably mounted on both sides of the bottom of the square base (100).