A measuring and positioning device for use in keel construction

Abstract

This invention belongs to the field of measurement technology, specifically a measurement and positioning device applied to keel construction, including a positioning instrument. A laser emitter is fixedly connected to the top surface of the positioning instrument, used to emit laser light for measuring and positioning the keel. A connecting shell protecting the laser emitter is fixedly connected to the top surface of the positioning instrument, and a sliding rod is fixedly connected to the top surface of the connecting shell. A connecting rod is slidably connected to the surface of the sliding rod. A suction cup is attached to the wall or steel frame to complete the installation of the positioning instrument. Through the above structural improvements, this device can more accurately measure the distance, level, or dimensions of the keel during use, allowing for more precise keel construction and improving construction accuracy and efficiency.

Description

Technical Field

[0001] This invention belongs to the field of measurement technology, specifically a measurement and positioning device applied to keel construction. Background Technology

[0002] During the construction of the keel, measurement and positioning are crucial steps. Professional positioning equipment, such as laser positioning instruments or total stations, is required to accurately locate each key point of the keel to ensure the stability and reliability of the entire structure. Laser positioning instruments use laser beams for positioning, and the keel is installed along the beam so that the bottom surface of the keel is flush with the beam.

[0003] However, the above technologies often have the following drawbacks: the laser positioning device needs to be fixed to the wall. If there is a deviation in its installation position, the device will have to be removed from the wall and reinstalled because it lacks the necessary adjustment mechanism. This will affect the use of the laser positioning device and even the accuracy of the measurement. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0005] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention provides a measuring and positioning device for keel construction, including a positioning instrument; a laser emitter is fixedly connected to the top surface of the positioning instrument, the laser emitter is used to emit laser to measure and position the keel, a connecting shell protecting the laser emitter is fixedly connected to the top surface of the positioning instrument, a sliding rod is fixedly connected to the top surface of the connecting shell, a connecting rod is slidably connected to the surface of the sliding rod, and a positioning mechanism for positioning the sliding rod is provided inside the connecting rod;

[0006] A slider is fixedly connected to the top surface of the connecting rod, a slide rail is slidably connected to the surface of the slider, a lead screw is rotatably connected inside the slide rail, the surface of the lead screw is threadedly connected to the slider, and a motor for driving the lead screw to rotate is provided on one side of the slider.

[0007] A fixing plate is fixedly connected to the side of the slide rail away from the motor, and a set of suction cups is fixedly connected to the side of the fixing plate away from the slide rail.

[0008] Preferably, a hollow elastic block is fixedly connected to the bottom surface of the slide rail, a connecting pipe is connected inside the elastic block, a joint is connected inside the connecting rod, the end of the connecting pipe away from the elastic block is fixedly connected to the joint, the slide rod and the inner wall of the connecting rod are sealed and slidably connected, and a first spring is fixedly connected between the top surface of the slide rod and the inner wall of the connecting rod.

[0009] Preferably, the positioning mechanism includes a fixed plate fixed inside the joint, a fixed rod fixedly connected to the center of the fixed plate, a sliding column slidably connected to the surface of the fixed rod, the sliding column being slidably connected to the inner wall of the joint, a groove being formed on the side of the sliding column near the inside of the connecting rod, a set of first connecting holes communicating with the groove being formed on the inner side wall of the sliding column, a second spring being fixedly connected between the sliding column and the connecting plate, an opening being provided at the end of the fixed rod away from the connecting rod, and a set of second connecting holes communicating with the inside of the fixed rod being formed on the side wall of the fixed rod.

[0010] Preferably, both the fixing plate and the suction cup are hollow structures. The fixing plate has a first through hole that is interconnected on the side near the suction cup. The suction cup has a set of annularly distributed air vents on the side away from the fixing plate. A push plate is slidably connected inside the fixing plate. A third spring is fixedly connected between the side of the push plate away from the suction cup and the inner wall of the fixing plate. A push rod is fixedly connected to the side of the push plate near the third spring. The push rod passes through the push plate and reaches the slide rail.

[0011] Preferably, the fixing plate has a second through hole that communicates with the center of the suction cup on one side, the inner wall of the suction cup is connected to a first sealing plate that seals the first through hole by a torsion spring, and the inner wall of the fixing plate is connected to a second sealing plate that seals the second through hole by a torsion spring.

[0012] Preferably, a connecting block is fixedly connected to the side of the fixing plate away from the suction cup. The connecting block has a hollow structure and an alarm module is installed inside. A round rod is fixedly connected to the side of the push plate away from the suction cup. The round rod passes through the fixing plate and reaches into the connecting block. A first contact point is fixed at one end of the round rod located in the connecting block. A second contact point is provided on the inner wall of the connecting block. When the first contact point contacts the second contact point, the alarm module will be activated to sound an alarm.

[0013] Preferably, the side wall of the connecting block is provided with a sound outlet, the second contact is slidably connected to the inner wall of the connecting block, and the second contact can seal the sound outlet. A third spring is fixedly connected between the second contact and the alarm module.

[0014] Preferably, an elastic sheet is fixedly connected inside the air outlet, and the elastic sheet has multiple sets of shrinkage holes.

[0015] Preferably, a measuring block is fixedly connected to the top surface of the slide rail, a movable groove is provided in the measuring block, a third contact point is fixedly connected to both ends of the movable groove, and a ball is movably connected in the movable groove.

[0016] Preferably, a magnetic block is fixedly connected inside the sphere, and the slider is made of a magnetic material that can magnetically attract the magnetic block.

[0017] The beneficial effects of this invention are as follows:

[0018] 1. This application uses a suction cup to attach to a wall or steel frame to install the positioning device. If the positioning device is not positioned correctly, a motor can drive a lead screw to rotate, allowing the slider to move within a slide rail, thereby moving the positioning device horizontally. If the positioning device needs to move vertically, simply move the slide bar to move the positioning device to the appropriate position. This allows the positioning device to be adjusted according to the actual situation, thereby improving its accuracy and enabling it to better measure the keel and position it more precisely.

[0019] 2. When the slide bar needs to be moved, the connecting rod can be driven by the lead screw to move closer to the elastic block. At this time, the connecting rod will squeeze the elastic block, so that the gas in the elastic block enters the connecting rod from the connecting pipe, and then pushes the slide bar to move. After the slide bar moves to the appropriate position, the rotation of the lead screw is stopped, and the slide bar is positioned by the positioning mechanism. The above mechanism achieves the effect of automatically adjusting and moving the slide bar. Attached Figure Description

[0020] The invention will now be further described with reference to the accompanying drawings.

[0021] Figure 1 This is a perspective view of the measuring and positioning device in this invention;

[0022] Figure 2 This is a schematic diagram of the internal structure of the slide rail and connecting rod in this invention;

[0023] Figure 3 yes Figure 2 Enlarged view of point A;

[0024] Figure 4 This is a schematic diagram of the internal structure of the fixing plate in this invention;

[0025] Figure 5 yes Figure 4 Enlarged view of point B;

[0026] Figure 6 yes Figure 5 Enlarged view of point C;

[0027] Figure 7 This is a partial structural cross-sectional view of the slide rail in this invention;

[0028] Figure 8 This is a cross-sectional view of the measuring block in this invention.

[0029] In the diagram: 1. Positioner; 2. Laser emitter; 3. Connecting shell; 4. Slide rod; 5. Connecting rod; 6. Slide rail; 7. Slider; 8. Lead screw; 9. Suction cup; 10. Elastic block; 11. Connecting pipe; 12. Connector; 13. Fixing plate; 14. Fixing rod; 15. Sliding column; 16. Groove; 17. First connecting hole; 18. Second connecting hole; 19. Push rod; 20. Push plate; 21. Fixing plate; 22. First through hole; 23. Air outlet; 24. Second through hole; 25. First sealing plate; 26. Second sealing plate; 27. Connecting block; 28. Alarm module; 29. ​​First contact; 30. Second contact; 31. Round rod; 32. Sound outlet; 33. Elastic sheet; 34. Constriction hole; 35. Measuring block; 36. Third contact; 37. Sphere; 38. Magnetic block. Detailed Implementation

[0030] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0031] Example 1: As Figures 1 to 6 As shown in the figure, a measurement and positioning device for keel construction according to an embodiment of the present invention includes a positioning instrument 1; a laser emitter 2 is fixedly connected to the top surface of the positioning instrument 1, the laser emitter 2 is used to emit laser to measure and position the keel, a connecting shell 3 is fixedly connected to the top surface of the positioning instrument 1 to protect the laser emitter 2, a sliding rod 4 is fixedly connected to the top surface of the connecting shell 3, a connecting rod 5 is slidably connected to the surface of the sliding rod 4, and a positioning mechanism for positioning the sliding rod 4 is provided inside the connecting rod 5;

[0032] A slider 7 is fixedly connected to the top surface of the connecting rod 5. A slide rail 6 is slidably connected to the surface of the slider 7. A lead screw 8 is rotatably connected inside the slide rail 6. The surface of the lead screw 8 is threadedly connected to the slider 7. A motor for driving the lead screw 8 to rotate is provided on one side of the slider 7.

[0033] A fixing plate 21 is fixedly connected to the side of the slide rail 6 away from the motor, and a set of suction cups 9 is fixedly connected to the side of the fixing plate 21 away from the slide rail 6.

[0034] When measuring and positioning the keel construction location, this application requires placing the laser emitter 2 in a suitable position and then attaching the suction cup 9 to the wall or steel frame. After installation, if the position of the positioning device 1 is incorrect, the motor can drive the lead screw 8 to rotate, allowing the slider 7 to move within the slide rail 6, thereby moving the positioning device 1 horizontally. If the positioning device 1 needs to move vertically, simply move the slide rod 4 to move the positioning device 1 to a suitable position, and then use the positioning mechanism to position the slide rod 4. After the positioning device 1 is adjusted to a suitable position, the laser emitter 2 emits a laser beam, aligning the bottom surface of the keel with the beam. The aforementioned mechanism allows the positioning device 1 to be adjusted according to the actual situation after installation, thereby improving the ease of use of the positioning device 1.

[0035] A hollow elastic block 10 is fixedly connected to the bottom surface of the slide rail 6. A connecting pipe 11 is connected inside the elastic block 10. A connector 12 is connected inside the connecting rod 5. The end of the connecting pipe 11 away from the elastic block 10 is fixedly connected to the connector 12. The slide rod 4 is slidably connected to the inner wall of the connecting rod 5. A first spring is fixedly connected between the top surface of the slide rod 4 and the inner wall of the connecting rod 5. When the slide rod 4 needs to be moved, the connecting rod 5 can be driven to move closer to the elastic block 10 by means of the lead screw 8. At this time, the connecting rod 5 will squeeze the elastic block 10, so that the gas in the elastic block 10 enters the connecting rod 5 from the connecting pipe 11, and then pushes the slide rod 4 to move. After the slide rod 4 moves to the appropriate position, the rotation of the lead screw 8 is stopped. At the same time, the slide rod 4 is positioned by means of the positioning mechanism. The above mechanism achieves the effect of automatically adjusting and moving the slide rod 4.

[0036] The positioning mechanism includes a fixed plate 13 fixed inside the connector 12. A fixed rod 14 is fixedly connected to the center of the fixed plate 13. A sliding column 15 is slidably connected to the surface of the fixed rod 14. The sliding column 15 is slidably connected to the inner wall of the connector 12. A groove 16 is provided on the side of the sliding column 15 near the inside of the connecting rod 5. A set of first connecting holes 17 communicating with the groove 16 is provided on the inner side wall of the sliding column 15. A second spring is fixedly connected between the sliding column 15 and the connecting plate. The fixed rod 14 is open at the end away from the connecting rod 5. A set of second connecting holes 18 communicating with the inside of the fixed rod 14 is provided on the side wall of the fixed rod 14.

[0037] In this application, when the gas from the elastic block 10 enters the connector 12 through the connecting pipe 11, the gas first enters the fixed rod 14 and then exits from the second connecting hole 18. At this time, the gas pushes the sliding column 15 to move, causing the sliding column 15 to disengage from the connector 12. Then, the gas can enter the connecting rod 5 to push the sliding rod 4 to move. After the sliding rod 4 moves to the appropriate position, the compression of the elastic block 10 stops the gas delivery to the connector 12. At this time, the second spring pulls the sliding column 15 to reset and seal the connector 12, so that the inside of the connecting rod 5 is in a sealed state. At this time, the sliding rod 4 cannot continue to slide. When the sliding rod 4 needs to move upward, it is pushed upward. At this time, the gas pushes the sliding column 15, causing the sliding column 15 to move towards the side closer to the connecting plate. After the first connecting hole 17 and the second connecting hole 18 are aligned, the gas in the connecting rod 5 is in a flowing state. At this time, the sliding rod 4 can move upward smoothly. Through the above mechanism, after the sliding rod 4 moves to the appropriate position, it can be aligned and positioned to prevent the sliding rod 4 from moving further.

[0038] Both the fixing plate 21 and the suction cup 9 are hollow. The fixing plate 21 has a first through hole 22 that is interconnected with the suction cup 9 on the side near the fixing plate 21. The suction cup 9 has a set of annularly distributed air outlet holes 23 on the side away from the fixing plate 21. A push plate 20 is slidably connected inside the fixing plate 21. A third spring is fixedly connected between the side of the push plate 20 away from the suction cup 9 and the inner wall of the fixing plate 21. A push rod 19 is fixedly connected to the side of the push plate 20 near the third spring. The push rod 19 passes through the push plate 20 and reaches the slide rail 6. The slider 7 is driven by the lead screw 8 to move towards the side near the push rod 19. During the movement of the slider 7, it pushes the push rod 19. At this time, the push rod 19 drives the push plate 20 to move. The push plate 20 pushes the gas in the fixing plate 21 into the suction cup 9 through the first through hole 22. Finally, the gas is blown out of the air outlet holes 23 to the area of ​​the suction cup 9 that needs to be adsorbed, cleaning the dust and impurities in the adsorption area, thereby improving the subsequent adsorption effect of the suction cup 9 and improving the stability of the entire measurement and positioning device.

[0039] The fixing plate 21 has a second through hole 24 that is interconnected with the center of the suction cup 9. The inner wall of the suction cup 9 is connected to a first sealing plate 25 that seals the first through hole 22 by a torsion spring. The inner wall of the fixing plate 21 is connected to a second sealing plate 26 that seals the second through hole 24 by a torsion spring. In this application, when the push plate 20 pushes the gas in the fixing plate 21, the gas will push the first sealing plate 25, so that the first sealing plate 25 no longer seals the first through hole 22. At this time, the gas can be blown out normally from the air outlet 23. When the suction cup 9 is adsorbed on the wall, the slider 7 needs to keep pressing against the slide rod 4. After the suction cup 9 is adsorbed, the slider 7 is moved away from the slide rod 4. At this time, the third spring will pull the slide plate. At this time, the second through hole 24 will be air-intake, so that the second sealing plate 26 no longer seals the second through hole 24. When the second through hole 24 is air-intake, it will suck away the air from the suction cup 9, thereby further improving the adsorption effect of the suction cup 9 on the wall.

[0040] A connecting block 27 is fixedly connected to the side of the fixing plate 21 away from the suction cup 9. The connecting block 27 has a hollow structure and an alarm module 28 is installed inside it. A round rod 31 is fixedly connected to the side of the push plate 20 away from the suction cup 9. The round rod 31 passes through the fixing plate 21 and reaches the connecting block 27. A first contact point 29 is fixed to one end of the round rod 31 located in the connecting block 27. A second contact point 30 is provided on the inner wall of the connecting block 27. When the first contact point 29 contacts the second contact point 30, the alarm module 28 will be activated to sound an alarm. If a suction cup 9 in this application falls off due to an accident, the second through hole 24 at the point of detachment will allow air to enter, causing the push plate 20 to move closer to the connecting block 27. At this time, the push plate 20 will drive the round rod 31 to move, thereby causing the first contact point 29 to contact the second contact point 30 and activate the alarm module 28. The alarm module 28 can alert the staff that the suction cup 9 has fallen off, so that timely handling can be carried out to prevent the risk of the measuring and positioning device falling off.

[0041] The side wall of the connecting block 27 is provided with a sound outlet 32. The second contact 30 is slidably connected to the inner wall of the connecting block 27, and the second contact 30 can seal the sound outlet 32. A third spring is fixedly connected between the second contact 30 and the alarm module 28. Under normal conditions, the second contact 30 seals the sound outlet 32 ​​to prevent dust or rainwater from entering the connecting block 27 and causing damage to the alarm module 28. When the second contact 30 is pushed by the first contact 29, the sound outlet 32 ​​is no longer sealed, and the alarm sound of the alarm module 28 can be transmitted from the sound outlet 32.

[0042] An elastic sheet 33 is fixedly connected inside the air outlet 23, and multiple sets of constriction holes 34 are formed on the elastic sheet 33. After the gas in this application enters the suction cup 9, the air pressure will increase. When the air pressure increases to a certain value, all the constriction holes 34 will be opened synchronously. At this time, the gas will be pressurized, thereby improving the blowing effect on impurities and allowing the gas to be sprayed out evenly.

[0043] Example 2: Figures 7 to 8 As shown in the comparative embodiment one, another embodiment of the present invention is as follows: a measuring block 35 is fixedly connected to the top surface of the slide rail 6, a moving groove is provided in the measuring block 35, and a third contact point 36 is fixedly connected to both ends of the moving groove. A ball 37 is movably connected in the moving groove. If the positioning device 1 in this application tilts during installation, the ball 37 will roll in the moving groove. At this time, the ball 37 will contact the third contact point 36 to activate the alarm module 28 to sound an alarm, thereby warning the staff that the positioning device 1 is not installed stably, so as to prevent affecting the measurement and positioning effect of the keel.

[0044] A magnetic block 38 is fixedly connected inside the sphere 37, and the slider 7 is made of a magnetic material that can be magnetically attracted to the magnetic block 38. When it is not necessary to use the sphere 37 to measure the tilt of the positioning device 1, the slider 7 can be moved to the measuring block 35 so that the slider 7 is magnetically attracted to the magnetic block 38. At this time, the sphere 37 will be positioned to prevent the alarm module 28 from being falsely triggered during the carrying of the positioning device 1.

[0045] When measuring and positioning the keel construction location, the laser emitter 2 is placed in a suitable position, and then the suction cup 9 is attached to the wall or steel frame. After installation, if the position of the positioning device 1 is incorrect, the motor can drive the lead screw 8 to rotate, allowing the slider 7 to move within the slide rail 6, thereby moving the positioning device 1 horizontally. If the positioning device 1 needs to move vertically, the slide rod 4 is moved to move the positioning device 1 to a suitable position, and then the positioning mechanism is used to position the slide rod 4. After the positioning device 1 is adjusted to a suitable position, the laser emitter 2 emits a laser beam, aligning the bottom surface of the keel with the beam. Through the above mechanism, the positioning device 1 can be adjusted according to the actual situation after installation, thereby improving the convenience of using the positioning device 1.

[0046] When it is necessary to move the slide bar 4, the connecting rod 5 can be driven to move closer to the elastic block 10 by the lead screw 8. At this time, the connecting rod 5 will squeeze the elastic block 10, so that the gas in the elastic block 10 enters the connecting rod 5 from the connecting pipe 11, and then pushes the slide bar 4 to move. After the slide bar 4 moves to the appropriate position, the rotation of the lead screw 8 is stopped, and the slide bar 4 is positioned by the positioning mechanism. The above mechanism achieves the effect of automatically adjusting and moving the slide bar 4.

[0047] When the gas from the elastic block 10 enters the connector 12 through the connecting pipe 11, the gas first enters the fixed rod 14 and then exits from the second connecting hole 18. At this time, the gas pushes the sliding column 15 to move, causing the sliding column 15 to disengage from the connector 12. Then, the gas can enter the connecting rod 5 to push the sliding rod 4 to move. After the sliding rod 4 moves to the appropriate position, the compression of the elastic block 10 stops the gas delivery to the connector 12. At this time, the second spring pulls the sliding column 15 to reset and seal the connector 12, so that the inside of the connecting rod 5 is sealed. At this time, the sliding rod 4 cannot continue to slide. When the sliding rod 4 needs to move upward, push the sliding rod 4 to move upward. The gas will push the sliding column 15, causing the sliding column 15 to move towards the side closer to the connecting plate. After the first connecting hole 17 and the second connecting hole 18 are aligned, the gas in the connecting rod 5 is in a flowing state. At this time, the sliding rod 4 can move upward smoothly. Through the above mechanism, after the sliding rod 4 moves to the appropriate position, it can be aligned and positioned to prevent the sliding rod 4 from moving further.

[0048] The slider 7 is driven by the lead screw 8 to move closer to the push rod 19. During this movement, the slider 7 pushes the push rod 19, which in turn moves the push plate 20. The push plate 20 then pushes the gas inside the fixed plate 21 through the first through hole 22 into the suction cup 9. Finally, the gas is blown out through the air outlet 23 to the area of ​​the suction cup 9 that needs to be adsorbed, cleaning away dust and impurities and improving the subsequent adsorption effect of the suction cup 9, thus enhancing the stability of the entire measurement and positioning device. In this application, when the push plate 20 pushes the gas inside the fixed plate 21, the gas pushes the first sealing plate 25, causing it to no longer seal the first through hole 22. At this point, the gas can be blown out normally from the air outlet 23. When the suction cup 9 is adsorbed onto the wall, the slider 7 needs to continuously press against the slide rod 4. After the suction cup 9 has finished adsorbing, the slider 7 is moved away from the slide bar 4. At this time, the third spring will pull the slide plate, and the second through hole 24 will be able to take in air, so that the second sealing plate 26 will no longer seal the second through hole 24. When the second through hole 24 takes in air, it will suck away the air from the suction cup 9, thereby further improving the adsorption effect of the suction cup 9 on the wall. If a suction cup 9 in this application falls off due to accident, the second through hole 24 at the point of fall will take in air, causing the push plate 20 to move towards the side closer to the connecting block 27. At this time, the push plate 20 will drive the round rod 31 to move, thereby causing the first contact 29 to contact the second contact 30 and activate the alarm module 28. The alarm module 28 can alert the staff that the suction cup 9 has fallen off, so that it can be dealt with in time to prevent the risk of the measuring and positioning device falling off.

[0049] Under normal conditions, the second contact 30 seals the sound outlet 32 ​​to prevent dust or rainwater from entering the connecting block 27 and damaging the alarm module 28. When the second contact 30 is pushed by the first contact 29, the sound outlet 32 ​​is no longer sealed, and the alarm sound of the alarm module 28 can be transmitted from the sound outlet 32. After the gas in this application enters the suction cup 9, the air pressure will increase. When the air pressure increases to a certain value, all the constriction holes 34 will be opened synchronously. At this time, the gas will be pressurized, thereby improving the blowing effect of impurities and allowing the gas to be sprayed out evenly.

[0050] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0051] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0052] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A measuring and positioning device for use in keel construction, comprising a positioning instrument (1); characterized in that: The top surface of the positioner (1) is fixedly connected with a laser emitter (2), the laser emitter (2) is used for emitting laser to measure and position keel, the top surface of the positioner (1) is fixedly connected with a connecting shell (3) for protecting the laser emitter (2), the top surface of the connecting shell (3) is fixedly connected with a sliding rod (4), the surface of the sliding rod (4) is slidably connected with a connecting rod (5), the connecting rod (5) is provided with a positioning mechanism for positioning the sliding rod (4); The top surface of the connecting rod (5) is fixedly connected with a sliding block (7), the surface of the sliding block (7) is slidably connected with a sliding rail (6), the sliding rail (6) is rotatably connected with a lead screw (8), the surface of the lead screw (8) is threadedly connected with the sliding block (7), one side of the sliding block (7) is provided with a motor for driving the lead screw (8) to rotate; The side, away from the motor, of the sliding rail (6) is fixedly connected with a fixed plate (21), the side, away from the sliding rail (6), of the fixed plate (21) is fixedly connected with a group of suction cups (9); The bottom surface of the sliding rail (6) is fixedly connected with a hollow elastic block (10), the elastic block (10) is communicated with a connecting pipe (11), the connecting rod (5) is communicated with a connector (12), one end of the connecting pipe (11), away from the elastic block (10), is fixedly connected with the connector (12), the sliding rod (4) is sealingly and slidably connected with the inner wall of the connecting rod (5), and the top surface of the sliding rod (4) is fixedly connected with the inner wall of the connecting rod (5) through a first spring; The positioning mechanism comprises a fixed disc (13) fixed in the connector (12), the center part of the fixed disc (13) is fixedly connected with a fixed rod (14), the surface of the fixed rod (14) is sealingly and slidably connected with a sliding column (15), the sliding column (15) is sealingly and slidably connected with the inner wall of the connector (12), the side, close to the inside of the connecting rod (5), of the sliding column (15) is provided with a groove (16), the inner side wall of the sliding column (15) is provided with a group of first connecting holes (17) communicated with the groove (16), the sliding column (15) is fixedly connected with a second spring between the connecting disc, and the end, away from the connecting rod (5), of the fixed rod (14) is provided with an opening, and the side wall of the fixed rod (14) is provided with a group of second connecting holes (18) communicated with the inside thereof; The fixed plate (21) and the suction cup (9) are both hollow structures, the side, close to the suction cup (9), of the fixed plate (21) is provided with first through holes (22) communicated with each other, the side, away from the fixed plate (21), of the suction cup (9) is provided with a group of annularly and evenly distributed air outlet holes (23), the fixed plate (21) is sealingly and slidably connected with a push plate (20), the side, away from the suction cup (9), of the push plate (20) is fixedly connected with the inner wall of the fixed plate (21) through a third spring, the side, close to the third spring, of the push plate (20) is fixedly connected with a push rod (19), and the push rod (19) passes through the push plate (20) and reaches the sliding rail (6); The fixed plate (21) is provided with a second through hole (24) near the center of the suction cup (9), the inner wall of the suction cup (9) is provided with a first sealing plate (25) for sealing the first through hole (22), and the inner wall of the fixed plate (21) is provided with a second sealing plate (26) for sealing the second through hole (24); The fixed plate (21) is provided with a second through hole (24) near the center of the suction cup (9), the inner wall of the suction cup (9) is provided with a first sealing plate (25) for sealing the first through hole (22), and the inner wall of the fixed plate (21) is provided with a second sealing plate (26) for sealing the second through hole (24); 2. The measuring and positioning device for keel construction according to claim 1, characterized in that: The side wall of the connecting block (27) is provided with a sound outlet hole (32), the second contact (30) is slidably connected with the inner wall of the connecting block (27), and the second contact (30) seals the sound outlet hole (32), and the third spring is fixedly connected between the second contact (30) and the alarm module (28).

3. The measuring and positioning device for keel construction according to claim 1, characterized in that: The elastic sheet (33) is fixedly connected in the air outlet hole (23), and a plurality of shrinkage holes (34) are formed in the elastic sheet (33).

4. The measuring and positioning device for keel construction according to claim 1, characterized in that: The top surface of the sliding rail (6) is fixedly connected with a measuring block (35), the measuring block (35) is provided with a moving groove, and the two ends of the moving groove are fixedly connected with third contacts (36).

5. The surveying and positioning device for use in keel construction according to claim 4, characterized in that: The inner wall of the moving groove is movably connected with a spherical ball (37). The spherical ball (37) is fixedly connected with a magnetic block (38), and the sliding block (7) is made of a material capable of being magnetically attracted to the magnetic block (38).

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