CN115355431B - Highway engineering construction level - Google Patents

Abstract

The invention relates to the technical field of measuring equipment, in particular to a highway engineering construction level, which comprises a level body, a supporting seat and an installing seat, wherein a plurality of notch grooves are formed in the side wall of the supporting seat, supporting legs are hinged in the notch grooves, a cavity and a first containing groove are formed in the supporting legs, a rotating shaft is connected in a rotating mode, a mounting plate and a spur gear are fixedly connected to the rotating shaft, a universal wheel is fixedly connected to the mounting plate, a limiting cover and a driving block in the invention can drive the universal wheel to turn to a position contacting with the ground when descending, the arrangement of the universal wheel and a U-shaped handle is convenient for staff to move the device, and a protective cylinder and a cover plate in the invention can effectively protect the level body, so that the level body can be effectively prevented from collision in the moving process, damage to the level body can be effectively reduced, and in addition, a supporting plate in the invention is convenient for staff to place paper for recording data.

Description

Highway engineering construction level

Technical Field

The invention relates to the technical field of measuring equipment, in particular to a highway engineering construction level.

Background

The leveling instrument is a measuring instrument frequently used in engineering measurement, is an instrument for establishing a horizontal line of sight to measure the height difference between two points on the ground, and can finish the final measurement work only by being matched with a leveling instrument bracket during measurement;

in the prior art, a tripod is often used for supporting the level, when the level is actually used, a worker needs to measure a plurality of places, at this time, the level needs to be transferred for a plurality of times, for convenience in measurement, the worker can not detach the level and then transfer the level in a box when transferring the level, but draws in the tripod, then lifts the tripod to carry the level to other places needing to be measured, and in the process of carrying the level by the worker, the level is always exposed in the external environment, so that collision between the external environment and the level is easy to cause, and the damage of the level is easy to cause;

aiming at the technical problems, the patent application number is as follows: 201920971916.X, a level holder, provides a solution to reduce the damage to the instrument during transfer by stowing the level into a protective case;

the comparison patent can protect the level gauge effectively, but still needs manpower to carry the level gauge, when the distance between the mapping points is far and the mapping device is heavy, the manpower carrying mapping device can consume a great deal of physical strength of staff, and the existing mapping device is also inconvenient for the staff to place and fix the paper for recording data, the staff often needs to hold a recording book to record data during mapping, and the handheld recording book is inconvenient for the staff to operate the instrument;

for this purpose, a road engineering construction level is proposed.

Disclosure of Invention

The invention aims to provide a road engineering construction level to solve the problems in the background technology.

In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a highway engineering construction level, includes level body, supporting seat and mount pad, a plurality of breach grooves have been seted up on the lateral wall of supporting seat, the breach inslot articulates there is the supporting leg, set up cavity and first storage tank on the supporting leg, first storage tank internal rotation connection has the pivot, fixedly connected with mounting panel and spur gear in the pivot, fixedly connected with universal wheel on the mounting panel, the meshing has the tooth slat on the spur gear, sliding connection has the movable plate in the cavity, fixedly connected with spring between the lower extreme of movable plate and the bottom of cavity, the upper end slip of tooth slat runs through the bottom of cavity and is fixedly connected with the lower extreme of movable plate, install the limiting cover of liftable on the supporting seat, fixedly connected with a plurality of drive blocks on the top of limiting cover, a plurality of drive blocks respectively slide and run through a plurality of perforation, install the lifter between limiting cover and the mount pad, fixedly connected with tooth slat on the mount pad, sliding connection has the second support for the support post, two support cylinders are used for the two fixed connection in the same supporting seat, two support cylinders are installed on the supporting seat is fixed connection and is used for the second side wall of support pad is fixed connection, two support cylinders are installed on the support pad is fixed connection in the same, and is used for installing the support pad is fixed connection in the second side of the support pad, the second driving piece is in transmission fit with the first driving piece.

Preferably, the first guide post which penetrates through the limiting cover in a sliding mode is fixedly connected to the supporting seat, and the first threaded rod which penetrates through the limiting cover in a threaded mode is connected to the supporting seat in a rotating mode.

Preferably, the lifting piece comprises a thread sleeve fixedly connected to the upper end of the limiting cover, a second threaded rod is connected to the thread sleeve in an internal thread mode, the upper end of the second threaded rod is rotationally connected with the lower end of the mounting seat, a second guide post is fixedly connected to the lower end of the mounting seat, a first guide groove is formed in the thread sleeve, and the second guide post is slidably inserted into the first guide groove.

Preferably, a first sliding groove is formed in the inner wall of the protective cylinder, the first driving piece comprises a first sliding block which is slidably connected in the first sliding groove, the first sliding block is fixedly connected with the supporting disc, a third threaded rod penetrates through the first sliding groove in a rotating mode, and part of threads of the third threaded rod located in the first sliding groove penetrate through the first sliding block.

Preferably, a second sliding groove is formed in the top of the second storage groove, the second driving piece comprises a second sliding block which is slidably connected in the second sliding groove, the second sliding block is fixedly connected with the supporting plate, a fourth threaded rod penetrates through the second sliding groove in a rotating mode, and part of threads of the fourth threaded rod located in the second sliding groove penetrate through the second sliding block.

Preferably, the lower end of the third threaded rod penetrates through the second sliding groove in a rotating mode, the portions, located in the second sliding groove, of the third threaded rod and the fourth threaded rod are fixedly connected with bevel gears in a coaxial mode, and the two bevel gears are meshed.

Preferably, the lower extreme fixedly connected with third guide post of shielding plate, the lower extreme rotation of shielding plate is connected with the fifth threaded rod, the upper end of supporting disk is equipped with screw thread groove and second guide slot, fifth threaded rod threaded connection is in the screw thread groove, third guide post slides and inserts to establish in the second guide slot.

Preferably, a magnetic attraction groove is formed in the upper end of the supporting plate, and a plurality of magnetic pressing blocks are connected in the magnetic attraction groove in an adsorption mode.

Preferably, threaded holes are formed in the bases of the connecting base and the level body, and two threaded holes are connected with the same locking bolt in a threaded mode.

Preferably, a U-shaped handle is fixedly connected to the side wall of the mounting seat.

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

1. the limiting cover can effectively combine and gather the supporting legs into a vertical stable state, and workers do not need to additionally use binding ropes to bind and limit the supporting legs when carrying the device.

2. The limiting cover and the driving block can drive the universal wheels to turn over to a position contacting with the ground when the limiting cover and the driving block descend, and the arrangement of the universal wheels and the U-shaped handles facilitates the movement of the device by workers.

3. According to the invention, the device can be stably placed on the ground by adjusting the hinging state of the supporting legs, in addition, a worker can adjust the supporting height of the level body by adjusting the hinging state of the supporting legs, and the lifting piece is convenient for the worker to further adjust the supporting height of the level body.

4. The protective cylinder and the cover plate can effectively protect the level body, and can effectively avoid collision of the level body in the moving process, so that damage to the level body in the transferring process can be effectively reduced.

5. The supporting plate is convenient for workers to place paper for recording data, and when the level body is stored in the protective cylinder, the supporting plate is synchronously stored in the second storage groove, and the step of folding the device by the workers is reduced due to the linkage of the structure.

Drawings

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

FIG. 2 is a top view of FIG. 1;

FIG. 3 isbase:Sub>A sectional view taken along the direction A-A of FIG. 2;

FIG. 4 is an enlarged view of the structure at C of FIG. 3;

FIG. 5 is an enlarged view of the structure at D of FIG. 3;

FIG. 6 is a cross-sectional view of the B-B directional part of the structure of FIG. 2;

FIG. 7 is an enlarged view of the structure at E of FIG. 6;

fig. 8 is a schematic perspective view showing another state of the present invention.

In the figure: 1. a level body; 2. a support base; 3. a mounting base; 4. a notch groove; 5. support legs; 6. a chamber; 7. a first storage groove; 8. a rotating shaft; 9. a mounting plate; 10. spur gears; 11. a universal wheel; 12. rack plate; 13. a moving plate; 14. a spring; 15. a limiting cover; 16. a driving block; 17. a through hole; 18. a lifting member; 181. a thread sleeve; 182. a second threaded rod; 183. a second guide post; 184. a first guide groove; 19. a protective cylinder; 20. a support plate; 21. a support column; 22. a connecting seat; 23. a cover plate; 24. a first driving member; 241. a first slider; 242. a third threaded rod; 25. a second storage groove; 26. a support plate; 27. a second driving member; 271. a second slider; 272. a fourth threaded rod; 28. a first guide post; 29. a first threaded rod; 30. a first chute; 31. a second chute; 32. bevel gears; 33. a third guide post; 34. a fifth threaded rod; 35. a thread groove; 36. a second guide groove; 37. a magnetic attraction groove; 38. a magnetic briquette; 39. a locking bolt; 40. u-shaped handle.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise. Furthermore, the terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1 to 8, the present invention provides a technical solution:

1-8, including the level body 1, the supporting seat 2 and the mounting seat 3, a plurality of notch grooves 4 are formed on the side wall of the supporting seat 2, the supporting leg 5 is hinged in the notch groove 4, the chamber 6 and the first containing groove 7 are formed on the supporting leg 5, the rotating shaft 8 is connected in the first containing groove 7, the mounting plate 9 and the spur gear 10 are fixedly connected on the rotating shaft 8, the universal wheel 11 is fixedly connected on the mounting plate 9, the rack plate 12 is meshed on the spur gear 10, the moving plate 13 is connected in the chamber 6 in a sliding way, a spring 14 is fixedly connected between the lower end of the moving plate 13 and the bottom of the chamber 6, the upper end of the rack plate 12 is connected with the lower end of the moving plate 13 in a sliding way through the bottom of the chamber 6, the lifting limiting cover 15 is mounted on the supporting seat 2, a plurality of driving blocks 16 are fixedly connected on the top of the limiting cover 15, the top of the cavity 6 is provided with a plurality of through holes 17, a plurality of driving blocks 16 respectively pass through the plurality of through holes 17 in a sliding way, a lifting piece 18 is arranged between the limiting cover 15 and the mounting seat 3, a protective cylinder 19 with an open top is fixedly connected to the mounting seat 3, a supporting plate 20 is connected to the protective cylinder 19 in a sliding way, two supporting columns 21 are fixedly connected to the supporting plate 20, the same connecting seat 22 is fixedly connected to the two supporting columns 21, the level body 1 is detachably arranged on the connecting seat 22, a cover plate 23 for sealing the open end of the protective cylinder 19 is arranged on the supporting plate 20, a first driving piece 24 for driving the supporting plate 20 to lift is arranged in the protective cylinder 19, a second containing groove 25 is arranged on the side wall of one end of the mounting seat 3, a supporting plate 26 is connected to the second containing groove 25 in a sliding way, a second driving piece 27 for driving the supporting plate 26 to move horizontally is arranged in the mounting seat 3, the second driving member 27 is in driving engagement with the first driving member 24.

When highway engineering construction, often need survey to different mapping points, and then need the staff to carry the mapping device to different mapping points department, current mapping device, mostly by surveying instrument and tripod are constituteed, do not set up the moving structure on the tripod, and then need the staff manpower to carry the mapping device, when the interval between the mapping points is farther and the mapping device is heavier, manpower carries the mapping device can consume a large amount of physical power of staff, in order to make things convenient for the measurement, the staff when removing the mapping device, can not dismantle the surveying instrument again with its vanning transfer, but draw in the tripod, then carry and draw in the tripod and remove the instrument to other places that need measure, the staff is in the in-process to surveying instrument removal, the surveying instrument is exposed in the environment of outside all the time, the limiting cover 15 in the invention can effectively combine and gather a plurality of supporting legs 5 into a vertical stable state, a worker does not need to additionally use binding ropes to bind and limit the supporting legs 5 when carrying the device, the limiting cover 15 and the driving block 16 in the invention can drive the universal wheel 11 to overturn to a position contacted with the ground when descending, the universal wheel 11 is convenient for the worker to move the device, in addition, the device can be accommodated in the first accommodating groove 7, the use of the supporting legs 5 is not influenced, the device can be stably placed on the ground by adjusting the hinging state of the supporting legs 5, in addition, the worker can adjust the supporting height of the level body 1 by adjusting the hinging state of the supporting legs 5, the lifting piece 18 is convenient for a worker to further adjust the supporting height of the level body 1, the protective cylinder 19 and the cover plate 23 can effectively protect the level body 1, the impact of the level body 1 in the moving process can be effectively avoided, the damage to the level body 1 in the transferring process can be effectively reduced, the supporting plate 26 is convenient for the worker to place paper for recording data, and when the level body 1 is stored in the protective cylinder 19, the supporting plate 26 is synchronously stored in the second storage groove 25, and the step of the device for storing the worker is reduced due to the structural linkage.

As shown in fig. 3, a first guide post 28 that slides through the limiting cover 15 is fixedly connected to the supporting seat 2, and a first threaded rod 29 that threads through the limiting cover 15 is rotatably connected to the supporting seat 2.

When the device needs to be moved, a worker can rotate the first threaded rod 29 clockwise, the first threaded rod 29 rotates clockwise to enable the limiting cover 15 to move downwards under the limiting effect of the first guide post 28, in the process of moving downwards the limiting cover 15, the supporting legs 5 are gradually gathered and finally in a vertical stable state, after the supporting legs 5 are in a vertical state, the limiting cover 15 continues to move downwards to drive the driving block 16 to continue to move downwards, the driving block 16 continues to move downwards to pass through the through hole 17 and gradually squeeze the moving plate 13, the moving plate 13 and the rack plate 12 move downwards, the rack plate 12 moves downwards to enable the spur gear 10 to rotate, the rotating shaft 8, the mounting plate 9 and the universal wheel 11 to rotate, finally the mounting plate 9 is turned to a horizontal state, at the moment, the universal wheel 11 is contacted with the ground, and the supporting legs 5 are separated from the ground, then the worker can move the device through the universal wheel 11, after the device moves to a proper position, the worker can rotate the first threaded rod 29 anticlockwise, the first threaded rod 29 anticlockwise rotates to enable the limiting cover 15 to move upwards under the limiting action of the first guide post 28, further enable the driving block 16 to move upwards, when the limiting cover 15 moves upwards to the limit position, the driving block 16 moves out of the cavity 6, at the moment, the moving plate 13 moves upwards under the elastic reset action of the spring 14, further enable the rack plate 12 to move upwards, the rack plate 12 moves upwards to enable the spur gear 10, the rotating shaft 8, the mounting plate 9 and the universal wheel 11 to rotate, finally the mounting plate 9 can be overturned to be in a vertical state and stored in the first storage groove 7 together with the universal wheel 11, in addition, when the limiting cover 15 moves upwards to the limit position, the limiting state of the supporting leg 5 is relieved, the staff member can then turn the support legs 5 flexibly to allow the device to rest stably on the ground.

As shown in fig. 3 and 6, the lifting member 18 includes a threaded sleeve 181 fixedly connected to the upper end of the limiting cover 15, a second threaded rod 182 is connected to the threaded sleeve 181 in a threaded manner, the upper end of the second threaded rod 182 is rotatably connected to the lower end of the mounting seat 3, a second guide post 183 is fixedly connected to the lower end of the mounting seat 3, a first guide groove 184 is formed in the threaded sleeve 181, and the second guide post 183 is slidably inserted into the first guide groove 184.

When the supporting height of the level body 1 needs to be adjusted, the staff can manually rotate the second threaded rod 182, the second threaded rod 182 rotates to enable the mounting seat 3 to move upwards or downwards under the limiting action of the first guide groove 184 and the second guide post 183, then the level body 1 above the mounting seat 3 moves upwards or downwards, and the second threaded rod 182 rotates until the level body 1 reaches the proper supporting height.

As shown in fig. 1 to 8, a first sliding groove 30 is formed in the inner wall of the protection barrel 19, the first driving member 24 includes a first sliding block 241 slidably connected in the first sliding groove 30, the first sliding block 241 is fixedly connected with the supporting disk 20, a third threaded rod 242 is rotatably penetrated through the first sliding groove 30, a second sliding groove 31 is formed on the top of the second storage groove 25, the second driving member 27 includes a second sliding block 271 slidably connected in the second sliding groove 31, the second sliding block 271 is fixedly connected with the supporting plate 26, a fourth threaded rod 272 is rotatably penetrated through the second sliding block 271 in the second sliding groove 31, a part of the fourth threaded rod 272 positioned in the second sliding groove 31 is rotatably penetrated through the second sliding groove 31, a part of the third threaded rod 242 positioned in the second sliding groove 31 is coaxially and fixedly connected with a bevel gear 32, and two bevel gears 32 are meshed.

When the mapping device needs to be transferred, a worker can rotate the fourth threaded rod 272, the fourth threaded rod 272 rotates to enable the second sliding block 271 to horizontally move under the limiting action of the second sliding groove 31, the supporting plate 26 is further enabled to horizontally move, in addition, under the transmission action of the two bevel gears 32, the fourth threaded rod 272 rotates to drive the third threaded rod 242 to rotate, the third threaded rod 242 rotates to enable the first sliding block 241 to move upwards or downwards under the limiting action of the first sliding groove 30, further, the supporting plate 20 and the level body 1 and the covering plate 23 above the supporting plate 20 move upwards or downwards, when the fourth threaded rod 272 rotates to enable the supporting plate 26 to move into the second storage groove 25, the level body 1 is just stored into the protective cylinder 19, and at the moment, the covering plate 23 also just seals the top opening end of the protective cylinder 19, so that the level body 1 is effectively protected from being damaged in the transferring process, when the level body 1 needs to be used again, the worker can rotate the fourth threaded rod 272 until the level body 1 moves out of the protective cylinder 19, the supporting plate 26 can also move out of the second storage groove 25, the supporting plate 26 can store data of the level body, and the worker can record data conveniently.

As shown in fig. 6 and 7, the lower end of the cover plate 23 is fixedly connected with a third guide post 33, the lower end of the cover plate 23 is rotatably connected with a fifth threaded rod 34, the upper end of the support plate 20 is provided with a threaded groove 35 and a second guide groove 36, the fifth threaded rod 34 is in threaded connection with the threaded groove 35, and the third guide post 33 is slidably inserted into the second guide groove 36.

The cover plate 23 is arranged above the level body 1, which can effectively shield the level body 1 from sunlight and rain, in addition, the mounting mode of the cover plate 23 is convenient for a worker to detach the cover plate, when the worker needs to detach the cover plate 23, the worker can rotate the fifth threaded rod 34 until the fifth threaded rod 34 is removed from the thread groove 35, when the worker needs to reinstall the cover plate 23, the worker can align the fifth threaded rod 34 with the thread groove 35 and align the third guide post 33 with the second guide groove 36, and finally rotate the fifth threaded rod 34 so that the worker is in threaded connection with the thread groove 35.

As shown in fig. 8, a magnetic attraction groove 37 is formed at the upper end of the support plate 26, and a plurality of magnetic pressing blocks 38 are attracted and connected in the magnetic attraction groove 37, wherein the magnetic attraction groove 37 and the magnetic pressing blocks 38 have magnetism, and the opposite sides of the magnetic attraction groove 37 and the magnetic pressing blocks 38 have opposite magnetism, so that the two are attracted and connected.

The setting of magnetic briquetting 38 is convenient for the staff to press the paper fastening of record data in the magnetic groove 37, compresses tightly the paper after the fixation and is more convenient for the staff to record data.

As shown in fig. 6, threaded holes are formed in the base of the connecting base 22 and the level body 1, and the same locking bolt 39 is screwed into the two threaded holes.

When the level body 1 needs to be detached from the connection base 22, a worker directly unscrews the locking bolt 39.

As shown in fig. 1, a U-shaped handle 40 is fixedly connected to the side wall of the mounting base 3.

The provision of the U-shaped handle 40 facilitates movement of the device by personnel.

The using method comprises the following steps: in practice, when the device is used, a worker can move the level body 1 out of the protective cylinder 19 and then stably support the device on the ground through the plurality of supporting legs 5, when the supporting height of the level body 1 needs to be adjusted, the worker can manually rotate the second threaded rod 182, the second threaded rod 182 rotates to enable the mounting seat 3 to move upwards or downwards under the limiting action of the first guide groove 184 and the second guide post 183, the level body 1 above the mounting seat 3 further moves upwards or downwards, the second threaded rod 182 rotates until the level body 1 reaches the proper supporting height, after the level body 1 reaches the proper height, the worker can survey the construction site through the level body 1, and the fact that the level body 1 is the prior art is required to be explained, the concrete surveying and mapping steps are not repeated here, when the device needs to be transferred, a worker can rotate the fourth threaded rod 272, the fourth threaded rod 272 rotates to enable the second sliding block 271 to horizontally move under the limit action of the second sliding groove 31, the supporting plate 26 further horizontally moves, under the transmission action of the two bevel gears 32, the fourth threaded rod 272 rotates to drive the third threaded rod 242 to rotate, the third threaded rod 242 rotates to enable the first sliding block 241 to move upwards or downwards under the limit action of the first sliding groove 30, the supporting plate 20 and the level body 1 and the shielding plate 23 above the supporting plate are further moved upwards or downwards, the fourth threaded rod 272 is rotated until the level body 1 is stored in the protective cylinder 19, and at the moment, the shielding plate 23 just seals the top opening end of the protective cylinder 19, so that the level body 1 is effectively protected from collision in the transfer process, in addition, the supporting plate 26 is also moved into the second receiving groove 25, then the worker can rotate the first threaded rod 29 clockwise, the first threaded rod 29 rotates clockwise to enable the limiting cover 15 to move downwards under the limiting action of the first guide post 28, the limiting cover 15 moves downwards to enable the supporting legs 5 to be gradually gathered and finally in a vertical state, after the supporting legs 5 are in a vertical state, the limiting cover 15 continues to move downwards to drive the driving block 16, the driving block 16 moves downwards to pass through the through hole 17 and press the moving plate 13, the moving plate 13 and the rack plate 12 move downwards, the rack plate 12 moves downwards to enable the spur gear 10 to rotate, the rotating shaft 8, the mounting plate 9 and the universal wheel 11 to rotate, finally the mounting plate 9 is enabled to be overturned to a horizontal state, the universal wheel 11 is enabled to be contacted with the ground, the supporting legs 5 are separated from the ground, then the worker can move the device through the universal wheel 11, when the device is moved to a proper position, a worker can rotate the first threaded rod 29 anticlockwise, the first threaded rod 29 anticlockwise rotates to enable the limiting cover 15 to move upwards under the limiting action of the first guide post 28, the driving block 16 is further enabled to move upwards, when the limiting cover 15 moves to the limit, the driving block 16 moves out of the cavity 6, at the moment, the moving plate 13 moves upwards under the elastic reset action of the spring 14, the rack plate 12 moves upwards to enable the spur gear 10, the rotating shaft 8, the mounting plate 9 and the universal wheel 11 to rotate, finally, the mounting plate 9 can be turned to be in a vertical state and is stored in the first storage groove 7 together with the universal wheel 11, in addition, when the limiting cover 15 moves upwards to the limit, the limiting state of the supporting leg 5 is released, then the worker can flexibly rotate the supporting leg 5 to enable the device to be stably placed on the ground, thereby continuing the mapping work.

The electric elements are all connected with an external main controller and 220V mains supply through a transformer, and the main controller can be conventional known equipment for controlling a computer and the like.

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

Claims (5)

1. The utility model provides a highway engineering construction level, includes level body (1), supporting seat (2) and mount pad (3), its characterized in that: a plurality of notch grooves (4) are formed in the side wall of the supporting seat (2), a supporting leg (5) is hinged in the notch grooves (4), a cavity (6) and a first storage groove (7) are formed in the supporting leg (5), a rotating shaft (8) is connected in the first storage groove (7) in a rotating mode, a mounting plate (9) and a spur gear (10) are fixedly connected to the rotating shaft (8), a universal wheel (11) is fixedly connected to the mounting plate (9), a rack plate (12) is meshed on the spur gear (10), a moving plate (13) is connected in a sliding mode in the cavity (6), a spring (14) is fixedly connected between the lower end of the moving plate (13) and the bottom of the cavity (6), the upper end of the rack plate (12) is connected with the lower end of the moving plate (13) in a sliding mode, a limiting cover (15) capable of ascending and descending is mounted on the supporting seat (2), a plurality of driving blocks (16) are fixedly connected to the top of the limiting cover (15), a plurality of through holes (17) are formed in the driving blocks (16) and the plurality of through holes (17) are formed in the supporting seat (17), the protective device comprises a mounting seat (3), wherein a protective cylinder (19) with an opening at the top is fixedly connected to the mounting seat (3), a supporting disc (20) is connected to the protective cylinder (19) in a sliding manner, two supporting columns (21) are fixedly connected to the supporting disc (20), the same connecting seat (22) is fixedly connected to the supporting columns (21), a level body (1) is detachably arranged on the connecting seat (22), a cover plate (23) for blocking the opening end of the protective cylinder (19) is arranged on the supporting disc (20), a first driving piece (24) for driving the supporting disc (20) to lift is arranged in the protective cylinder (19), a second containing groove (25) is formed in one end side wall of the mounting seat (3), a supporting plate (26) is connected to the supporting column (25) in a sliding manner, a second driving piece (27) for driving the supporting plate (26) to move horizontally is arranged in the mounting seat (3), and the second driving piece (27) is in transmission fit with the first driving piece (24);

the inner wall of the protection cylinder (19) is provided with a first sliding groove (30), the first driving piece (24) comprises a first sliding block (241) which is connected in the first sliding groove (30) in a sliding way, the first sliding block (241) is fixedly connected with the supporting disc (20), a third threaded rod (242) is penetrated through the first sliding groove (30) in a rotating way, and part of threads of the third threaded rod (242) positioned in the first sliding groove (30) penetrate through the first sliding block (241);

a second sliding groove (31) is formed in the top of the second storage groove (25), the second driving piece (27) comprises a second sliding block (271) which is connected in the second sliding groove (31) in a sliding mode, the second sliding block (271) is fixedly connected with the supporting plate (26), a fourth threaded rod (272) is penetrated through the second sliding groove (31) in a rotating mode, and part of threads of the fourth threaded rod (272) located in the second sliding groove (31) penetrate through the second sliding block (271);

the lower end of the third threaded rod (242) rotates to penetrate through the second sliding groove (31), bevel gears (32) are coaxially and fixedly connected to the parts of the third threaded rod (242) and the fourth threaded rod (272) located in the second sliding groove (31), and the two bevel gears (32) are meshed;

the lower end of the shielding plate (23) is fixedly connected with a third guide column (33), the lower end of the shielding plate (23) is rotatably connected with a fifth threaded rod (34), the upper end of the supporting plate (20) is provided with a threaded groove (35) and a second guide groove (36), the fifth threaded rod (34) is in threaded connection with the threaded groove (35), and the third guide column (33) is slidably inserted into the second guide groove (36);

a first guide post (28) penetrating through the limiting cover (15) in a sliding manner is fixedly connected to the supporting seat (2), and a first threaded rod (29) penetrating through the limiting cover (15) in a threaded manner is rotatably connected to the supporting seat (2);

when the first threaded rod (29) is rotated clockwise, the first threaded rod (29) rotates clockwise to enable the limiting cover (15) to move downwards under the limiting action of the first guide post (28), in the process of downwards moving the limiting cover (15), the supporting legs (5) are gradually gathered and finally in a vertical stable state, after the supporting legs (5) are in a vertical state, the limiting cover (15) continues to move downwards to drive the driving block (16) to continue to move downwards, when the driving block (16) continues to move downwards, the driving block passes through the through hole (17) and gradually extrudes the moving plate (13), further the moving plate (13) and the rack plate (12) move downwards, the rack plate (12) moves downwards to enable the spur gear (10) to rotate, and then the rotating shaft (8), the mounting plate (9) and the universal wheel (11) to rotate, at the moment, the universal wheel (9) is turned to a horizontal state, the supporting legs (5) are in contact with the ground, then the universal wheel (11) is separated from the ground, when the first threaded rod (29) is moved upwards through the universal wheel (11) to move upwards, when the first guide post (29) moves upwards, the first threaded rod (29) rotates upwards, and when the first threaded rod (29) moves upwards and then moves upwards, the drive block (16) moves out from the cavity (6), at this moment, the movable plate (13) moves upwards under the elastic reset action of the spring (14), and then, the rack plate (12) moves upwards to enable the spur gear (10), the rotating shaft (8), the mounting plate (9) and the universal wheel (11) to rotate, and finally, the mounting plate (9) can be overturned to a vertical state and is stored in the first storage groove (7) with the universal wheel (11), and in addition, when the limiting cover (15) moves upwards to the limit, the limiting state of the supporting leg (5) is relieved, and then, the leveling instrument is stably placed on the ground by rotating the supporting leg (5).

2. A highway engineering construction level according to claim 1 wherein: lifting piece (18) are including threaded sleeve (181) of fixed connection in limit housing (15) upper end, threaded sleeve (181) internal thread connection has second threaded rod (182), the upper end of second threaded rod (182) is rotated with the lower extreme of mount pad (3) and is connected, the lower extreme fixedly connected with second guide post (183) of mount pad (3), be equipped with first guide slot (184) on threaded sleeve (181), second guide post (183) slip is inserted and is established in first guide slot (184).

3. A highway engineering construction level according to claim 1 wherein: the upper end of backup pad (26) is equipped with magnetism and inhales groove (37), magnetism is inhaled inslot (37) and is adsorbed and be connected with a plurality of magnetism briquetting (38).

4. A highway engineering construction level according to claim 1 wherein: screw holes are formed in bases of the connecting seat (22) and the level body (1), and two locking bolts (39) are connected with the screw holes in a threaded mode.

5. A highway engineering construction level according to claim 1 wherein: the side wall of the mounting seat (3) is fixedly connected with a U-shaped handle (40).

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