CN210890659U

CN210890659U - Angle-adjustable mechanical-control electric laser level meter

Info

Publication number: CN210890659U
Application number: CN201921224031.XU
Authority: CN
Inventors: 毛震旭; 毛见
Original assignee: Yangzhou Best Tool Co ltd
Current assignee: Yangzhou Best Tool Co ltd
Priority date: 2019-07-31
Filing date: 2019-07-31
Publication date: 2020-06-30
Anticipated expiration: 2029-07-31

Abstract

The utility model provides an angle-adjustable mechanical control electric laser level meter in the technical field of surveying and mapping tools, which comprises a support sleeve and a base, wherein a plurality of connecting rods are distributed at the lower side of the support sleeve, one end of each connecting rod faces downwards is connected with the base, a swingable outer connecting sleeve is connected in each fixed sleeve, a swingable inner connecting sleeve is connected in each outer connecting sleeve, a connecting seat is arranged at the lower side of each inner connecting sleeve, a swinging body is arranged at the lower side of each connecting seat, a conductive coil ring is connected at the lower part of each swinging body, and the conductive coil ring is conductive when being in contact with; a lifting plate which can slide along the connecting rod is connected to the connecting rod above the base, a plurality of lifting holes are distributed in the connecting rod in the height direction, a return spring is sleeved on the connecting rod, one end of the return spring abuts against the lifting plate, the other end of the return spring abuts against the base, a conductive driving part is further arranged on the lower side of the lifting plate, a microswitch is connected to the base, and when the conductive driving part descends to act on the microswitch, the microswitch is pressed down; the utility model discloses can directly confirm the state of pendulum body.

Description

Angle-adjustable mechanical-control electric laser level meter

Technical Field

The utility model belongs to the technical field of the plotting tool, in particular to controllable spirit level of must cutting off power supply.

Background

The laser level meter comprises a base and a support sleeve, wherein a plurality of connecting rods are arranged at the lower side of the support sleeve, the downward ends of the connecting rods are connected with the base, a swinging body capable of swinging is connected in the support sleeve, and a plurality of lasers are mounted on the swinging body; in the design, when the level meter is required to be aligned to an object to be measured, only the whole base can be rotated, the laser is aligned to the object to be measured, the pendulum body swings, the measurement efficiency is reduced, and when the pendulum body swings, the pendulum body can only be observed by naked eyes whether swinging exists or not, and the state of the pendulum body cannot be directly confirmed; in addition, the control circuit board is externally connected with a power supply device for supplying power to the control circuit board, the control circuit board is powered on after the power supply device is connected, the control circuit board is powered off after the power supply device is pulled out, and the power of the control circuit board cannot be regulated and controlled according to actual requirements after the power supply device is connected.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model discloses an it is inconvenient and the uncontrollable technical problem of outage of control circuit board to confirm pendulum state among the solution prior art, the utility model provides an angularly adjustable mechanical control electric laser level appearance, the utility model discloses in can directly confirm the state of pendulum, control circuit board's outage is controllable, laser instrument angularly adjustable.

The purpose of the utility model is realized like this: an angle-adjustable mechanical electric control type laser level meter comprises a supporting sleeve and a base with a containing cavity, a plurality of vertical and downward connecting rods are arranged at the lower side of the supporting sleeve, a rotatable supporting seat is connected on the base, the downward end of the connecting rod is connected with the supporting seat, the lower part of the supporting seat is arranged in the containing cavity, the fixed sleeve is internally connected with a swingable external connecting sleeve, the laser device comprises a base, an outer connecting sleeve, a connecting seat, a swinging body, a conductive coil ring, a test slot and a power supply, wherein the inner connecting sleeve is connected in the outer connecting sleeve, the independent swinging directions of the inner connecting sleeve and the outer connecting sleeve are mutually vertical, the connecting seat is arranged at one end of the inner connecting sleeve, which extends downwards out of the supporting sleeve, the connecting seat is provided with a plurality of mounting holes for conveniently mounting a laser device, the swinging body is arranged at the lower side of the connecting seat, the outer side of the lower part of the swinging body is connected with the conductive coil ring, the test slot is arranged; each connecting rod above the base is connected with a lifting plate, the lifting plates can slide up and down along the connecting rods, a plurality of lifting holes are distributed in the height direction of the connecting rods, lifting parts which correspond to the connecting rods one by one are distributed on the lower sides of the lifting plates, a reset spring is sleeved on each connecting rod, one end of each reset spring abuts against one side, facing downwards, of each lifting part, the other end of each reset spring abuts against the upper side of the base, a conductive driving part extending downwards is further arranged on the lower side of each lifting plate, a microswitch is connected to the upper side of the base, when the conductive driving part descends to act on the microswitch, the microswitch is pressed down, and the lifting plates, the conductive driving parts and the lifting parts are all made of insulating materials; the upper side of the base is provided with a control circuit board, when the micro switch is pressed down, the control circuit board is powered on, and when the micro switch is not pressed down, the control circuit board is powered off.

In the utility model, the control circuit board is provided with an alarm circuit, the conductive coil ring is electrically connected with the control circuit board, and when the conductive coil ring is conductive, the alarm circuit gives an alarm sound; installing the laser into the corresponding installation hole according to actual requirements, and rotating the supporting seat when the angle of the level meter needs to be adjusted to enable the laser to be aligned to an object to be measured; a detection person presses the lifting plate downwards, when the conductive driving part is tightly pressed on the micro switch, the micro switch is pressed down, the pin penetrates through a lifting hole which is above the lifting plate and is closest to the upper surface of the lifting plate, the lifting plate is fixed in the height direction, the reset spring is in a compressed state, the micro switch is pressed down, the control circuit board is connected with a power supply device for supplying power to the control circuit board, the control circuit board is powered on, and the laser can start to work; after the control circuit board is powered on, when the pendulum body swings, the conductive coil ring is contacted with the inner wall of the supporting seat, the conductive coil ring is conductive, and the alarm circuit sends out an alarm signal, such as an optical signal or a sound signal; when the pendulum body is in a vertical state, the conductive coil ring is not contacted with the inner wall of the supporting seat, the conductive coil ring is not conductive, and the alarm circuit stops alarming; when the connecting pin is pulled out, the lifting plate resets under the action of the reset spring, the conductive driving part leaves the micro switch, the micro switch is not pressed down, the control circuit board is powered off, and the laser does not act; the utility model can directly know the state of the pendulum body through the combined arrangement of the pendulum body and the wire coil ring, and the operation is convenient; the micro switch connected between the power supply device and the control circuit board can be mechanically controlled according to actual needs, so that the power failure of the control circuit board is controlled; the supporting seat is rotatably arranged to realize the angle adjustment of the laser; the device can be applied to the work of supporting the level.

In order to further realize the height adjustment of the level meter, at least three connecting parts are arranged on the periphery of the base, fixing holes are formed in the connecting parts, the connecting parts are connected with fixing shafts through the fixing holes, the fixing shafts are provided with sliding cavities, the fixing shafts are slidably connected with transmission nuts through the sliding cavities, supporting rods are in threaded connection with the transmission nuts, the upper parts of the supporting rods extend out of the transmission nuts, the lower parts of the supporting rods extend out of the fixing shafts downwards, the bottom sides of the supporting rods are lower than the bottom sides of the base, at least two limiting holes and two connecting holes I are arranged on the connecting parts, the limiting holes and the connecting holes I are arranged at intervals in the height direction, a plurality of connecting holes II which share the same axis with the connecting holes are arranged on the fixing shafts, through holes which share the same axis with the limiting holes are also formed in the fixing shafts, the periphery of the transmission nut is provided with at least two connecting grooves, each connecting groove comprises a first limiting part, a first horizontal part, an inclined part, a second horizontal part and a second limiting part, one end of each limiting part is flush with the outer side of the transmission nut, the other end of each limiting part is one end of the first horizontal part, the other end of each horizontal part is one end of the inclined part, the other end of each horizontal part is one end of the second limiting part, the other end of each limiting part is flush with the outer side of the transmission nut, the fixed shaft is connected with a limiting part capable of moving along the radial direction of the through hole through the through hole, a limiting step is arranged on the fixed shaft corresponding to each through hole, a limiting spring is sleeved on each limiting part, one end of each limiting spring is abutted against the lower part of each limiting part, the other end of each limiting spring is abutted against the corresponding limiting step, the other end of the limiting piece is arranged in the through hole; when the limiting piece is abutted against the second horizontal part, the limiting spring is in a compressed state, the other end of the limiting piece is positioned in the limiting hole, and at the moment, the third connecting hole and the second connecting hole of the fixed shaft are coaxial; in the design, when the height of the supporting rod needs to be adjusted, the transmission nut is pulled to enable the transmission nut to slide upwards along the sliding cavity, when the lower part of the limiting part abuts against the inclined part, the spring starts to compress, the limiting part is popped out under the action of the elastic force of the spring, when the lower part of the limiting part abuts against the horizontal part II, the spring is further compressed, the other end of the limiting part is arranged in the limiting hole of the connecting part, at the moment, the connecting hole II and the connecting hole III are coaxial, the connecting bolt is screwed inwards again, the connecting bolt penetrates into the connecting hole III, the transmission nut is fixed relative to the fixed shaft, the supporting rod is rotated, the supporting rod moves in the height direction while rotating, the rotating direction of the supporting rod is adjusted, the supporting rod moves in the required direction, and when the supporting rod moves; the process of adjusting the height of each support rod is similar to the above process, and is not described in detail herein.

In order to further realize the swing of the pendulum body, four suspension holes are uniformly distributed on the periphery of the support sleeve, two external connection holes coaxial with the suspension holes are uniformly distributed on the periphery of the external connection sleeve, two small holes are uniformly distributed on the periphery of the external connection sleeve, two internal connection holes are uniformly distributed on the periphery of the internal connection sleeve, and the internal connection holes and the small holes are coaxial.

In order to further realize drive nut's spacing, the locating part includes sliding part one and sliding part two, is equipped with the supporting part between sliding part one and the sliding part two, the one end of spacing spring is contradicted on sliding part one, and the sliding part two can stretch into spacing downtheholely, and sliding part one is in the spread groove.

In order to further realize the rotation of the supporting seat, the base is rotatably connected with a worm wheel, the base is provided with a supporting block, the supporting block is rotatably connected with a worm, the worm is meshed with the worm wheel, one end, far away from the supporting block, of the worm extends out of the base, and the supporting seat is fixedly connected to the upper side of the worm wheel.

In order to further facilitate the adjustment of the angle of the level gauge, an adjusting handle which facilitates the rotation of the worm is arranged on the worm extending out of the base.

In order to rotate the supporting rod conveniently, a rotating handle is arranged at the end part of the supporting rod which extends out of the transmission nut upwards.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a first perspective view of the present invention.

Fig. 3 is a top view of the present invention.

Fig. 4 is a partially enlarged view of a portion a in fig. 3.

Fig. 5 is a second perspective view of the present invention.

Fig. 6 is an exploded view of the connection between the driving nut and the limiting member of the present invention.

Fig. 7 is a structural diagram of the middle connecting portion of the present invention connected to the supporting rod and in the initial state.

Fig. 8 is a structural diagram of the middle connecting part of the present invention connected to the supporting rod and in a height adjusting state.

Fig. 9 is a perspective view of the fixing shaft of the present invention.

Fig. 10 is a partial enlarged view of fig. 6 at B.

Fig. 11 is a structural diagram of the connection of the outer connecting sleeve and the inner connecting sleeve of the present invention.

Fig. 12 is a three-dimensional structure view of the middle inner connecting sleeve, the connecting seat and the pendulum body of the present invention.

Fig. 13 is a partial enlarged view at C in fig. 5.

Fig. 14 is a structural diagram of the present invention for realizing the rotation of the supporting seat (after the base is hidden).

In the figure: 1 connecting part, 2 supporting rods, 201 rotating handle, 3 fixed shaft, 4 connecting rod, 5 supporting sleeve, 6 laser, 7 mounting hole, 8 base, 9 pendulum body, 10 outer connecting sleeve, 11 inner connecting sleeve, 12 hanging hole, 13 connecting seat, 14 test slot, 15 control circuit board, 16 conductive coil ring, 17 transmission nut, 18 limit spring, 19 limit piece, 1901 sliding part I, 1902 supporting part, 1903 sliding part II, 20 connecting groove, 2001 limit part I, 2002 horizontal part I, 2003 inclined part, 2004 horizontal part II, 2005 limit part II, 21 connecting hole III, 22 connecting hole I, 23 connecting hole II, 24 sliding cavity, 25 mounting groove, 26 through hole, 27 limit hole, 28 limit step, 29 outer connecting hole, 30 small hole, 31 inner connecting hole, 32 connecting bolt, 33 lifting plate, 3301 lifting part, 3302 conductive driving part, 34 microswitch, 35 lifting hole, 36 swinging hole, 37 supporting seat, 38 supporting block, 39 worm, 3901 adjustment handle, 40 worm wheel, 41 return spring.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1 to 14, an angle-adjustable mechanical-control electric laser level includes a support sleeve 5 and a base 8 having a containing cavity, a plurality of vertically downward connecting rods 4 are arranged at a lower side of the support sleeve 5, a rotatable support seat 37 is connected to the base 8, a downward end of each connecting rod 4 is connected to the support seat 37, a lower portion of the support seat 37 is in the containing cavity, and a structure for realizing rotation of the support seat 37 is specifically that a worm wheel 40 is rotatably connected to the base 8, a support block 38 is arranged on the base 8, a worm 39 is rotatably connected to the support block 38, the worm 39 is meshed with the worm wheel 40 (shown in a simple schematic diagram of the worm 39 and the worm wheel 40 in fig. 14, and no meshed teeth are drawn), one end of the worm 39, which is far away from the support block 38, extends out of the base 8, the support seat 37 is fixedly connected to an upper side of the worm wheel 40; the swinging outer connecting sleeve 10 is connected in the fixed sleeve, the inner connecting sleeve 11 is connected in the outer connecting sleeve 10, the independent swinging directions of the inner connecting sleeve 11 and the outer connecting sleeve 10 are mutually vertical, one end of the inner connecting sleeve 11, which extends out of the supporting sleeve 5 downwards, is provided with a connecting seat 13, the connecting seat 13 is provided with a plurality of mounting holes 7 for conveniently mounting the laser 6, the lower side of the connecting seat 13 is provided with a swinging body 9, the outer side of the lower part of the swinging body 9 is connected with a conductive coil ring 16, a test slot 14 is arranged on the supporting seat 37, the conductive coil ring 16 extends into the test slot 14, and when the swinging body 9 swings, the conductive coil ring 16 is conductive when contacting with; wherein, the inner connecting sleeve 11, the connecting seat 13 and the swinging body 9 are integrated; each connecting rod 4 above the base 8 is connected with a lifting plate 33, the lifting plate 33 can slide up and down along the connecting rod 4, the lifting plate 33 is provided with a swinging hole 36 for swinging the swinging body 9, the connecting rods 4 are provided with a plurality of lifting holes 35 in the height direction, lifting parts 3301 corresponding to the connecting rods 4 one by one are arranged on the lower side of the lifting plate 33, a return spring 41 is sleeved on the connecting rod 4, one end of the return spring 41 is abutted against the downward side of the lifting part 3301, the other end of the return spring 41 is abutted against the upper side of the base 8, a conductive driving part 3302 extending downwards is further arranged on the lower side of the lifting plate 33, a micro switch 34 is connected to the upper side of the base 8, when the conductive driving part 3302 descends to act on the micro switch 34, the micro switch 34 is pressed down, and the lifting plate 33, the conductive driving part 3302 and the lifting part; the upper side of the base 8 is provided with a control circuit board 15, when the microswitch 34 is pressed down, the control circuit board 15 is powered on, the microswitch 34 is not pressed down, and the control circuit board 15 is powered off.

In order to further realize the height adjustment of the level instrument, at least three connecting parts 1 are arranged on the periphery of a base 8, a fixing hole is arranged on each connecting part 1, each connecting part 1 is connected with a fixing shaft 3 through the corresponding fixing hole, a sliding cavity 24 is arranged on each fixing shaft 3, each fixing shaft 3 is connected with a transmission nut 17 in a sliding mode through the corresponding sliding cavity 24, a support rod 2 is connected onto each transmission nut 17 in a threaded mode, the upper portion of each support rod 2 extends out of the corresponding transmission nut 17, a rotating handle 201 is arranged at the end portion, extending out of the corresponding transmission nut 17 upwards, of each support rod 2, the lower portion of each support rod 2 extends out of the corresponding fixing shaft 3 downwards, the bottom side of each support rod 2 is lower than the bottom side of the base 8, two limiting holes 27 and two connecting holes 22 are arranged on each connecting part 1, the limiting holes 27 and the connecting holes 22 are arranged at intervals in the height direction, a plurality, the side of the fixed shaft 3 is further provided with two mounting grooves 25 facilitating the mounting of the limiting member 19, the two mounting grooves 25 are respectively communicated with two through holes 26, a plurality of connecting holes three 21 are distributed on the transmission nut 17, the connecting holes three 21 can be coaxial with the connecting holes two 23, the periphery of the transmission nut 17 is provided with two connecting grooves 20, each connecting groove 20 comprises a limiting part I2001, a horizontal part I2002, an inclined part 2003, a horizontal part II 2004 and a limiting part II 2005, one end of the limiting part is flush with the outer side of the transmission nut 17, the other end of the limiting part I2001 is one end of the horizontal part I2002, the other end of the horizontal part I2002 is one end of the inclined part 2003, the other end of the inclined part 2003 is one end of the horizontal part II 2004, the other end of the horizontal part II 2004 is one end of the limiting part II 2005, the other end of the limiting part II 2005 is flush with the outer, a limiting step 28 is arranged on the fixed shaft 3 corresponding to each through hole 26, a limiting spring 18 is sleeved on the limiting piece 19, one end of the limiting spring 18 abuts against the lower part of the limiting piece 19, the other end of the limiting spring 18 abuts against the limiting step 28, when one end of the limiting piece 19 abuts against the horizontal part I2002, the limiting spring 18 is in a natural state, and the other end of the limiting piece 19 is in the through hole 26; when the limiting piece 19 abuts against the second horizontal part 2004, the limiting spring 18 is in a compressed state, the other end of the limiting piece 19 is in the limiting hole 27, and at the moment, the third connecting hole 21 and the second connecting hole 23 of the fixed shaft 3 are coaxial; the position-limiting member 19 includes a first sliding portion 1901 and a second sliding portion 1903, a supporting portion 1902 is disposed between the first sliding portion 1901 and the second sliding portion 1903, one end of the position-limiting spring 18 abuts against the first sliding portion 1901, the second sliding portion 1903 can extend into the position-limiting hole 27, and the first sliding portion 1901 is disposed in the connecting groove 20.

In order to further realize the swing of the pendulum body 9, four suspension holes 12 are uniformly distributed on the periphery of the support sleeve 5, two outer connection holes 29 coaxial with the suspension holes 12 are uniformly distributed on the periphery of the outer connection sleeve 10, two small holes 30 are also uniformly distributed on the periphery of the outer connection sleeve 10, two inner connection holes 31 are uniformly distributed on the periphery of the inner connection sleeve 11, and the inner connection holes 31 and the small holes 30 are coaxial; a bearing is arranged in the two coaxial hanging holes 12 and the external connecting hole 29, and a bearing is also arranged in the internal connecting hole 31 and the small hole 30, so that the pendulum body 9 can swing left, right, front and back.

In the utility model, the control circuit board 15 is provided with an alarm circuit, the conductive coil ring 16 is electrically connected with the control circuit board 15, and when the conductive coil ring 16 is conductive, the alarm circuit gives out an alarm sound; the connecting bolt 32 is used for sequentially screwing the connecting hole I22 and the connecting hole II 23, so that the fixed shaft 3 is fixed on the connecting part 1; when the laser 6 is installed in the corresponding installation hole 7 according to actual requirements and the height of the support rod 2 needs to be adjusted, the transmission nut 17 is pulled to enable the transmission nut 17 to slide upwards along the sliding cavity 24, when the lower part of the limiting piece 19 abuts against the inclined part 2003, the limiting spring 18 starts to compress, the limiting piece 19 is under the action of the elastic force of the limiting spring 18, the limiting piece 19 is popped out, when the lower part of the limiting piece 19 abuts against the second horizontal part 2004, the limiting spring 18 is further compressed, the other end of the limiting piece 19 is in the limiting hole 27 of the connecting part 1, at the moment, the second connecting hole 23 and the third connecting hole 21 are coaxial, the connecting bolt 32 is screwed inwards again, the connecting bolt 32 is screwed into the third connecting hole 21, the transmission nut 17 is fixed relative to the fixed shaft 3, the rotating handle 201 is rotated, the support rod 2 moves in the height direction while rotating, and, the supporting rod 2 is moved to a required direction, and when the supporting rod 2 moves to a specified height, the rotating handle 201 stops rotating; the process of adjusting the height of each support rod 2 is similar to the above process, and is not repeated herein, so that the level is adjusted to the designated height until the laser 6 is aligned with the object to be measured; installing the laser 6 into the corresponding installation hole 7 according to actual requirements, when the angle of the level needs to be adjusted, rotating the adjusting handle 3901, rotating the worm 39 to drive the worm wheel 40 to rotate, rotating the worm wheel 40 to drive the supporting seat 37 to rotate, rotating the supporting seat 37 to drive the laser 6 to rotate, enabling the laser 6 to be aligned with an object to be measured, and stopping rotating the adjusting handle 3901; a detection person presses the lifting plate 33 downwards, when the conductive driving part 3302 is pressed on the micro switch 34, and the micro switch 34 is pressed, a pin penetrates through the lifting hole 35 above the lifting plate 33 and closest to the upper surface of the lifting plate 33, so that the lifting plate 33 is fixed in the height direction, the reset spring 41 is in a compressed state, and the micro switch 34 is pressed, the control circuit board 15 is connected with a power supply device for supplying power to the control circuit board 15 (the power supply device is externally connected to the control circuit board 15, and is not shown in the drawing), the control circuit board 15 is powered on, and the laser 6 can start to work; after the control circuit board 15 is powered on, when the pendulum body 9 swings, the conductive coil ring 16 is contacted with the inner wall of the supporting seat 37, the conductive coil ring 16 is conductive, and the alarm circuit sends out an alarm signal, such as an optical signal or a sound signal; when the pendulum body 9 is in a vertical state, the conductive coil ring 16 is not contacted with the inner wall of the supporting seat 37, the conductive coil ring 16 is not conductive, and the alarm circuit stops alarming; when the pin is pulled out, the lifting plate 33 is reset under the action of the reset spring 41, the conductive driving part 3302 leaves the micro switch 34, the micro switch 34 is not pressed, the control circuit board 15 is powered off, and the laser 6 does not act; the utility model can finely adjust the height of the support rod 2 according to actual needs, and the structure for adjusting the height of the level meter is convenient to disassemble and assemble; the lifting plate 33 and the microswitch 34 are jointly arranged, so that the power on and off of the mechanical regulation control circuit board 15 are realized, and the regulation control circuit board 15 is convenient to power off; the pendulum body 9 and the wire coil ring are combined, so that the state of the pendulum body 9 can be known conveniently; the fine adjustment of the angle of the level gauge is realized through the arrangement of the rotating supporting seat 37; the device can be applied to the work of supporting the level.

While particular embodiments of the present invention have been described, it is to be understood that the present invention is not limited to the precise embodiments described above, and that various changes and modifications may be effected therein by one skilled in the art without departing from the scope of the appended claims. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

Claims

1. The utility model provides an angularly adjustable mechanical accuse electric laser level appearance which characterized in that: the laser positioning device comprises a support sleeve and a base with a containing cavity, wherein a plurality of vertical downward connecting rods are arranged on the lower side of the support sleeve, a rotatable support seat is connected onto the base, one downward end of each connecting rod is connected with the corresponding support seat, the lower part of each support seat is in the containing cavity, a swingable outer connecting sleeve is connected into each fixing sleeve, an inner connecting sleeve is connected into each outer connecting sleeve, the independent swinging directions of the inner connecting sleeve and the outer connecting sleeve are perpendicular to each other, a connecting seat is arranged at one end, extending downwards out of the support sleeve, of each inner connecting sleeve, a plurality of mounting holes facilitating installation of a laser are formed in each connecting seat, a swinging body is arranged on the lower side of each connecting seat, a conductive coil ring is connected to the outer side of the lower part of each swinging body, a test slot is formed in; each connecting rod above the base is connected with a lifting plate, the lifting plates can slide up and down along the connecting rods, a plurality of lifting holes are distributed in the height direction of the connecting rods, lifting parts which correspond to the connecting rods one by one are distributed on the lower sides of the lifting plates, a reset spring is sleeved on each connecting rod, one end of each reset spring abuts against one side, facing downwards, of each lifting part, the other end of each reset spring abuts against the upper side of the base, a conductive driving part extending downwards is further arranged on the lower side of each lifting plate, a microswitch is connected to the upper side of the base, when the conductive driving part descends to act on the microswitch, the microswitch is pressed down, and the lifting plates, the conductive driving parts and the lifting parts are all made of insulating materials; the upper side of the base is provided with a control circuit board, when the micro switch is pressed down, the control circuit board is powered on, and when the micro switch is not pressed down, the control circuit board is powered off.

2. The mechanically controlled, electrically adjustable angle laser level according to claim 1, wherein: at least three connecting parts are arranged at the periphery of the base, a fixing hole is formed in each connecting part, each connecting part is connected with a fixing shaft through the corresponding fixing hole, a sliding cavity is formed in each fixing shaft, each fixing shaft is connected with a transmission nut through the corresponding sliding cavity in a sliding mode, a supporting rod is connected to each transmission nut in a threaded mode, the upper portion of each supporting rod extends out of the corresponding transmission nut, the lower portion of each supporting rod extends out of the corresponding fixing shaft downwards, the bottom side of each supporting rod is lower than the bottom side of the base, at least two limiting holes and two first connecting holes are arranged in each connecting part, the limiting holes and the first connecting holes are arranged in the height direction at intervals, a plurality of second connecting holes which share the same axis with the connecting holes are arranged in each fixing shaft, through holes which share the same axis with the limiting holes are further formed in each fixing shaft, the connecting groove comprises a first limiting part and a first horizontal part, the transmission nut comprises an inclined part, a second horizontal part and a second limiting part, wherein one end of the limiting part is flush with the outer side of the transmission nut, the other end of the first limiting part is one end of the first horizontal part, the other end of the first horizontal part is one end of the inclined part, the other end of the second horizontal part is one end of the second limiting part, the other end of the second limiting part is flush with the outer side of the transmission nut, the fixed shaft is connected with a limiting part capable of moving along the radial direction of the through hole through the through hole, a limiting step is arranged on the fixed shaft corresponding to each through hole, a limiting spring is sleeved on the limiting part, one end of the limiting spring abuts against the lower part of the limiting part, the other end of the limiting spring abuts against the limiting step, when one end of the limiting part abuts against the; when the limiting part is abutted against the second horizontal part, the limiting spring is in a compressed state, the other end of the limiting part is in the limiting hole, and at the moment, the third connecting hole and the second connecting hole of the fixing shaft are coaxial.

3. The mechanically controlled, electrically adjustable angle laser level according to claim 1, wherein: the periphery equipartition of supporting the cover has four to hang the hole, the periphery equipartition of outer adapter sleeve have two with hang the external hole of hole coaxial axle center, the periphery of outer adapter sleeve still equipartition has two apertures, the periphery equipartition of inner coupling sleeve has two inner holes, inner hole and aperture coaxial axle center.

4. The mechanically controlled, electrically adjustable angle laser level according to claim 2, wherein: the locating part includes sliding part one and sliding part two, is equipped with the supporting part between sliding part one and the sliding part two, the one end of spacing spring is contradicted on sliding part one, and the sliding part two can stretch into spacing downthehole, and sliding part one is in the spread groove.

5. The angle-adjustable mechanical-control electric laser level instrument according to any one of claims 1 to 4, wherein: the worm wheel is rotatably connected to the base, a supporting block is arranged on the base, a worm is rotatably connected to the supporting block and meshed with the worm wheel, one end, far away from the supporting block, of the worm extends out of the base, and the supporting seat is fixedly connected to the upper side of the worm wheel.

6. The mechanically controlled, electrically adjustable angle laser level according to claim 5, wherein: an adjusting handle which is convenient for rotating the worm is arranged on the worm extending out of the base.

7. The angle-adjustable mechanical-control electric laser level instrument according to any one of claims 2 to 4, wherein: and a rotating handle is arranged at the end part of the supporting rod which extends out of the transmission nut.