CN112576874B

CN112576874B - On-spot mapping device of building engineering cost

Info

Publication number: CN112576874B
Application number: CN202011397862.4A
Authority: CN
Inventors: 江豪杰
Original assignee: Guangzhou Jiahui Engineering Consulting Co ltd
Current assignee: Guangdong Jiahui Construction Engineering Consulting Co.,Ltd.
Priority date: 2020-12-03
Filing date: 2020-12-03
Publication date: 2022-12-13
Anticipated expiration: 2040-12-03
Also published as: CN112576874A

Abstract

The invention discloses a construction project cost on-site surveying and mapping device, which comprises a surveying and mapping instrument and a support frame with an automatic adjusting function; the support frame comprises a base, a telescopic support rotatably connected to the base, a first cavity arranged in the base, a spherical block rotatably arranged in the first cavity, a rolling piece arranged on the side wall of the first cavity, a first limiting block arranged on the spherical block, a cushion arranged on the side wall of the first cavity, a counterweight structure arranged below the spherical block, a rotation stopping structure used for fixing the spherical block and a storage structure used for storing and protecting the surveying and mapping instrument; according to the invention, through the arrangement of the spherical block and the rolling piece, the spherical block can realize automatic adjustment under the influence of gravity, and the surveying instrument can automatically recover to a horizontal angle, so that the adjustment difficulty is reduced, the operation is more convenient, the surveying instrument can adapt to various terrains, and the surveying instrument also has good adaptability to uneven ground and can be adjusted more quickly.

Description

On-spot mapping device of building engineering cost

Technical Field

The invention belongs to the technical field of engineering surveying and mapping, and particularly relates to a construction engineering cost on-site surveying and mapping device.

Background

The project cost refers to the estimated or actual expenditure construction cost of the construction project in the construction period, and three elements of project valuation: the core contents of the method include investment estimation, design approximation, correction approximation, construction drawing budget, construction settlement, completion settlement and the like.

Surveying instrument on the market, when placing the measuring point with the support, need pass through the mode of artifical regulation, regulating block to on the base carries out continuous regulation, can measure until the surveying instrument that is located on the base reachs the position that is close the horizontally, this in-process is to the regulation of the levelness of instrument, it is big to hold the degree of difficulty, need be through long-time meticulous regulation, need certain regulation experience simultaneously, can adjust the completion, this equipment is higher to the condition on ground simultaneously, in the face of some unevenness's ground conditions, adaptability is relatively poor, it more increases to adjust the degree of difficulty.

Disclosure of Invention

The invention provides a construction project cost on-site surveying and mapping device which is convenient and quick to adjust and strong in adaptability to overcome the defects of the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme: a construction project cost on-site surveying and mapping device comprises a surveying and mapping instrument and a support frame with an automatic adjusting function; the support comprises a base support seat, a telescopic support rotatably connected to the base, a first cavity arranged in the base, a spherical block rotatably arranged in the first cavity, a rolling piece arranged on the side wall of the first cavity, a first limiting block arranged on the spherical block, a cushion arranged on the side wall of the first cavity, a counterweight structure arranged below the spherical block, a rotation stopping structure used for fixing the spherical block and a storage structure used for storing and protecting a surveying instrument; according to the invention, through the arrangement of the spherical block and the rolling piece, because the bottom of the spherical block is relatively heavy, the surveying instrument is arranged opposite to the counterweight structure, at the moment, the spherical block slides along the rolling piece on the side wall of the first cavity under the influence of gravity, when the spherical block stops, the surveying instrument is in a vertically upward state under the action of the gravity of the counterweight structure, so that the spherical block can realize automatic adjustment under the influence of the gravity, and the surveying instrument automatically recovers to a horizontal angle, thereby reducing the difficulty of adjustment, being more convenient to operate, and meanwhile, because the arrangement of the structure ensures that the position of the surveying instrument is only influenced by the gravity direction, and the gravity direction is always in a vertically downward state, the surveying instrument can timely face the state of the uneven ground, still can realize the horizontal arrangement of the instrument, adapt to various terrains, has good adaptability to the uneven ground, and can be adjusted more rapidly; and the effect of first stopper then has carried on spacingly to the rotation of spherical piece, make spheroidal rotation have certain limitation, will be because this structure can't continue to rotate after the spherical piece rotates to a certain extent, then need carry out regulation in length to the telescopic bracket this moment, setting through this structure, avoided because ground workman is too violent with the equipment slope in operation process, the focus that leads to is unstable, lead to the possibility that equipment emptys, setting through this structure, certain slope threshold value has been injectd, thereby the stability of equipment has been guaranteed, the service life of equipment has been prolonged.

The counterweight structure comprises a fixed column arranged at the bottom of the spherical block, an extension pipe sleeved on the fixed column, a counterweight pipe sleeved on the extension pipe, a counterweight block arranged at the bottom of the counterweight pipe, a bottom pin arranged below the counterweight block, a second limiting block arranged at the bottom of the fixed column, a third limiting block arranged at the bottom of the extension pipe, a first block body sleeved at the middle section of the fixed column, a second cavity arranged in the first block body, a winding roll arranged in the second cavity, a first gear used for winding the winding roll, and a rope body, one end of which is wound on the winding roll and the other end of which is fixedly connected with the counterweight block; through rotating first gear, then the winding wheel of operatable rotates, thereby realize receiving and releasing to the rope body, thereby the position height through receiving and releasing the control balancing weight to the rope body, thereby the lift of control end needle, through the direction of end needle, then can very clear and definite position of definite surveying instrument, it is more accurate to surveying instrument location in vertical side, the precision of test result has effectively been guaranteed, the weight of spherical piece bottom has been increased through setting up of this structure simultaneously, thereby the precision of spherical piece has been guaranteed, its location ability has been guaranteed, simultaneously through the setting of this structure, weight has been increased, the time that rocks the location needs has been reduced, thereby the location efficiency of equipment has been increased, it is relatively poor on the day, when possessing certain degree blow problem, then the accessible rotates first gear this moment, thereby descend the balancing weight, thereby the whole focus of this structure has been reduced, thereby the influence of wind to device location ability has been reduced, thereby make the location more accurate, equipment operability is simpler.

The rotation stopping structure comprises a third cavity arranged in the base, a first through groove arranged on the side wall of the third cavity, a first sliding block capable of moving back and forth in the first through groove, a friction block arranged on the first sliding block, a rotating ring capable of rotating in the third cavity, a first rotating rod with two ends respectively rotatably connected to the inner wall of the rotating ring and the first sliding block, a first convex tooth arranged below the rotating ring, a fourth cavity arranged below the third cavity, a third gear arranged in the fourth cavity and an adjusting wheel used for controlling the third gear to rotate; when surveying instrument's location is accurate, twist manual regulating wheel afterwards with the hand, rotate, the regulating wheel will pass through the cooperation between third gear and the first dogtooth, thereby control the swivel rotates, the swivel will promote first slider at first logical inslot removal through first swing arm at the rotation in-process, thereby make the clutch blocks on the first slider contact with the surface of sphere piece, thereby carry out the spline to the sphere piece and handle, thereby the rotation of fixed sphere piece, setting through this structure, the fixed situation of sphere piece will effectively be guaranteed, its fixed effect has been guaranteed, can effectively reduce the influence to the sphere piece through the mode of centre gripping, the pivoted possibility that can take place with it in the contact process in its clamping process has been reduced, thereby the accuracy of location has been guaranteed, the convenient operation nature of equipment will effectively be guaranteed through the setting of this structure simultaneously, the efficiency of the operation of equipment has effectively been guaranteed.

The containing structure comprises a containing cavity arranged in the spherical block, a first sliding groove arranged on the side wall of the containing cavity, a support arranged below the surveying instrument, extending blocks arranged on two sides of the support and capable of moving back and forth in the first sliding groove, fixed blocks arranged on the first limiting blocks, a baffle plate capable of moving back and forth in the fixed blocks and fourth limiting blocks arranged at two ends of the baffle plate; through the removal of baffle in the fixed block, thereby realize opening and shutting of holding the chamber, move the limit of one end when the baffle afterwards, this moment for open mode, contact each other between fourth stopper and the fixed block, can pull out the surveying instrument from holding the intracavity, the extension piece on the support that sets up in the in-process surveying instrument below of pulling out will remove along first spout, when removing extreme position, promptly the surveying instrument wholly exposes, promote the dog and reset along the fixed block this moment, baffle after resetting is located the surveying instrument, the below provides the support for the surveying instrument, thereby good supporting role has been played, when needs handling instrument, then can accomodate the surveying instrument and get into and hold the intracavity, thereby good guard action has been played.

The telescopic support comprises a first rotating part arranged on the base, a first rotating block arranged on the first rotating part, a fifth cavity arranged in the first rotating block, a supporting leg capable of moving back and forth in the fifth cavity, a rubber cushion block arranged at the tail end of the support, a second through groove arranged on the supporting leg, a second convex tooth arranged on the side wall of the second through groove, a second gear arranged in the second through groove, a manual wheel arranged on the outer side of the first rotating block and used for driving the second gear to rotate, and a fixing structure arranged at the tail end of the supporting leg.

The fixing structure comprises a sixth cavity arranged at the tail end of the supporting leg, a second sliding block capable of moving back and forth in the sixth cavity, a contact pin arranged on the second sliding block, a first elastic piece arranged in the sixth cavity and used for resetting the contact pin, a second block body connected with the second sliding block, a central rod arranged on the second block body, a pedal sleeved on the central rod, an oblique angle arranged at the outer end of the pedal and a one-way structure used for fixing the second sliding block to move; the pedal is treaded by the foot, so that the second sliding block is driven to move along the sixth cavity, the contact pin is inserted into the ground afterwards, the oblique angle is formed on the pedal, a worker can easily stretch the pedal outwards only in a mode that the foot moves downwards along the support leg when using the pedal, and then the pedal is treaded, the convenience of equipment operation is effectively guaranteed by the mode, meanwhile, the structure is in a mode that the contact pin is hidden, the contact area between the equipment and the ground is effectively increased, the friction of the worker on the cement ground is increased, the use stability is guaranteed, the contact pin is protected on the other hand, the contact pin is prevented from being damaged and loosened, the contact pin is broken, the length is reduced, the accuracy of the equipment is increased, the safety in the carrying process is guaranteed, the worker cannot be injured, and the safety of the worker is guaranteed.

The unidirectional structure comprises a seventh cavity arranged on the side wall of the sixth cavity, a third sliding block capable of moving back and forth in the seventh cavity, a first unidirectional tooth arranged on the third sliding block, a second elastic part arranged in the seventh cavity and used for resetting the third sliding block, an eighth cavity arranged in the second sliding block, a fourth sliding block capable of moving back and forth in the eighth cavity, a third elastic part arranged in the eighth cavity and used for resetting the fourth sliding block, a second unidirectional tooth arranged on the fourth sliding block, a ninth cavity arranged below the eighth cavity, an extrusion block arranged on the pedal and used for pushing the fourth sliding block, a fourth elastic part arranged on the second block and used for resetting the pedal, a fifth elastic part sleeved on the central rod, a clamping block arranged on the pedal and a clamping port arranged on the second block; when the pedal is forced to be turned outwards, the extrusion block on the pedal rotating at the moment pushes the fourth slider to move, so that the second unidirectional tooth on the fourth slider is in contact with the first unidirectional tooth, thereby playing a unidirectional role, when the second slider moves downwards along with the pedal, the fourth slider continuously pushes the third slider to retract inwards, thereby enabling the second slider to move downwards, when the foot leaves the pedal, the second slider is engaged between the first unidirectional tooth and the second unidirectional tooth to be limited at the moment, thereby realizing the stability after the contact pin is inserted into the ground, meanwhile, when the pedal rotates to a limit position, namely, when the pedal is vertical to a support leg, the clamping block arranged on the pedal is clamped into the clamping port under the pushing force of the fifth elastic piece, thereby forming fixation, the stability of the extrusion block to the fourth slider is guaranteed, when the pedal needs to be unlocked, when the contact pin is reset, the pedal is pushed upwards along the direction of the fifth elastic piece by the foot, the clamping block is clamped in the pushing port, the sliding block is pressed in the fourth slider, thereby the whole-course operation of the sliding block is effectively reduced, and the efficiency of the sliding block is effectively reduced when the sliding of the sliding plug-in the sliding process of the sliding operation of the fourth slider, thereby effectively reducing the sliding pin.

According to the invention, through the arrangement of the spherical block and the rolling piece, the spherical block can realize automatic adjustment under the influence of gravity, and the surveying instrument can automatically recover to a horizontal angle, so that the adjustment difficulty is reduced, the operation is more convenient, the device can adapt to various terrains, has good adaptability to uneven ground, and can be adjusted more quickly.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a right side view of the present invention.

Fig. 3 isbase:Sub>A schematic perspective cross-sectional view of fig. 2 taken along linebase:Sub>A-base:Sub>A.

Fig. 4 is an enlarged schematic view of a portion a of fig. 3.

Fig. 5 is an enlarged schematic view of C in fig. 4.

Fig. 6 is an enlarged schematic view of fig. 4 at D.

Fig. 7 is an enlarged schematic view of B in fig. 3.

Fig. 8 is a partially enlarged schematic view of fig. 7.

Fig. 9 is a perspective cross-sectional view of fig. 2 taken along line B-B.

Fig. 10 is a partially enlarged schematic view of fig. 9.

Fig. 11 is a partially enlarged schematic view of fig. 1.

Detailed Description

As shown in fig. 1-11, a construction cost field mapping device comprises a mapping instrument 1 and a bracket 2; the support 2 has an automatic adjusting function, and the support 2 comprises a base 21, a telescopic support 3, a first cavity 22, a spherical block 23, a rolling piece 24, a first limiting block 25, a cushion 26, a counterweight structure 4, a rotation stopping structure 5 and a containing structure 6; surveying instrument is the prior art who buys on the market, and here is no longer repeated, telescopic bracket 3 swivelling joint in on the base, first cavity 22 set up in the base, spherical piece 23 is rotatable to be located in the first cavity, rolling member 24 is located on the first cavity lateral wall, rolling member here sets up to the ball structure, also replaces for columniform roller structure, and on first stopper 25 located the spherical piece, cushion 26 located first cavity lateral wall, the cushion was the block of rubber material, and spherical piece below is located to counter weight structure 4, and spline structure 5 is used for fixed spherical piece, accomodates structure 6 and is used for accomodating the protection surveying instrument.

The counterweight structure 4 comprises a fixing column 41, an extension tube 42, a counterweight tube 43, a counterweight block 44, a bottom needle 45, a second limiting block 46, a third limiting block 47, a first block 48, a second cavity 49, a winding roll 410, a first gear 411 and a rope body 412; the fixed column 41 is arranged at the bottom of the spherical block, the extension tube 42 is sleeved on the fixed column, the counterweight tube 43 is sleeved on the extension tube, the counterweight block 44 is arranged at the bottom of the counterweight tube, the counterweight block is a bottom pin 45 arranged below the counterweight block, the second stopper 46 is arranged at the bottom of the fixed column, the third stopper 47 is arranged at the bottom of the extension tube, the first block 48 is sleeved at the middle section of the fixed column, the second cavity 49 is arranged in the first block, the winding roll 410 is arranged in the second cavity, the first gear 411 is used for winding the winding roll, and one end of the rope 412 is wound on the winding roll and the other end of the rope is fixedly connected with the counterweight block.

The rotation stopping structure 5 comprises a third cavity 51, a first through groove 52, a first sliding block 53, a friction block 54, a rotating ring 55, a first rotating rod 56, a first convex tooth 57, a fourth cavity 58, a third gear 59 and an adjusting wheel 510; third cavity 51 is seted up in the base, and first logical groove 52 is seted up on the third cavity lateral wall, and first slider 53 can first logical inslot round trip movement, and clutch blocks 54 locates on the first slider, the clutch blocks be a block structure that the surface is comparatively crude and possess elasticity, and the rubber block can be chooseed for use to this place, and swivel 55 can the internal rotation of third cavity, first swing arm 56 both ends are swivelling joint respectively on swivel inner wall and the first slider, first dogtooth 57 is located the swivel below, fourth cavity 58 is seted up in third cavity below, third gear 59 locates in the fourth cavity, regulating wheel 510 is used for control the third gear rotates.

The accommodating structure 6 comprises an accommodating cavity 61, a first sliding groove 62, a bracket 63, an extending block 64, a fixing block 65, a baffle 66 and a fourth limiting block 67; hold the chamber 61 and set up in the spherical block, first spout 62 sets up hold on the chamber lateral wall, the support 63 is located the surveying instrument below, extend the piece 64 locate the support both sides can round trip movement in the first spout, fixed block 65 is located on the first stopper, baffle 66 can round trip movement in the fixed block, fourth stopper 67 is located the baffle both ends.

The telescopic bracket 3 comprises a first rotating part 31, a first rotating block 32, a fifth cavity 33, a supporting leg 34, a rubber cushion block 35, a second through groove 36, a second convex tooth 37, a second gear 38, a manual wheel 39 and a fixing structure 7; first rotating member 31 is located on the base, first rotating member is located on the first rotating member, fifth cavity 33 is seted up in first rotating member, and stabilizer blade 34 can round trip movement in the fifth cavity, and rubber cushion 35 locates the support end, and second through-slot 36 is seted up on the stabilizer blade, on second protruding tooth 37 located the second led to the groove lateral wall, second gear 38 located the second led to the inslot, manual wheel 39 is located the first rotating member outside and is used for driving the second gear to rotate, and fixed knot constructs 7 and locates the stabilizer blade end.

The fixed structure 7 comprises a sixth cavity 71, a second slider 72, a pin 73, a first elastic piece 74, a second block 75, a central rod 76, a pedal 77, a bevel 78 and a one-way structure 8; the sixth cavity 71 is arranged at the tail end of the supporting leg, the second sliding block 72 can move back and forth in the sixth cavity, the inserting pin 73 is arranged on the second sliding block, the first elastic piece 74 is arranged in the sixth cavity and used for resetting the inserting pin, the first elastic piece is arranged as a spring piece, the second block 75 is connected with the second sliding block, the central rod 76 is arranged on the second block, the pedal 77 is sleeved on the central rod, the oblique angle 78 is arranged at the outer end of the pedal, and the one-way structure 8 is used for fixing the second sliding block to move.

The unidirectional structure 8 comprises a seventh cavity 81, a third sliding block 82, a first unidirectional tooth 83, a second elastic piece 84, an eighth cavity 85, a fourth sliding block 86, a third elastic piece 87, a second unidirectional tooth 88, a ninth cavity 89, an extrusion block 810, a fourth elastic piece 811, a fifth elastic piece 812, a clamping block 813 and a clamping interface 814; a seventh cavity 81 is arranged on the side wall of the sixth cavity, a third slide block 82 can move back and forth in the seventh cavity, a first one-way tooth 83 is arranged on the third slide block, a second elastic piece 84 is arranged in the seventh cavity and used for resetting the third slide block, an eighth cavity 85 is arranged in the second slide block, a fourth slide block 86 can move back and forth in the eighth cavity, a third elastic piece 87 is arranged in the eighth cavity and used for resetting the fourth slide block, a second one-way tooth 88 is arranged on the fourth slide block, a ninth cavity 89 is arranged below the eighth cavity, an extrusion block 810 is arranged on the pedal and used for pushing the fourth slide block, a fourth elastic piece 811 is arranged on the second block and used for resetting the pedal, a fifth elastic piece 812 is sleeved on the central rod, a clamping block 813 is arranged on the pedal, and a clamping port 814 is arranged on the second block; the second elastic element, the third elastic element, the fourth elastic element and the fifth elastic element are all arranged to be spring elements.

The specific operation flow is as follows;

the equipment is carried to a specified measuring point, then the telescopic bracket 3 is propped open, the surveying instrument 1 can be pulled out from the accommodating cavity through the movement of the baffle 66 in the fixed block 65, then when the baffle moves to the limit of one end, at the moment, the baffle is in an open state, the fourth limit block 67 is in mutual contact with the fixed block, the extending block 64 on the bracket 63 arranged below the surveying instrument moves along the first sliding groove 62 in the pulling process, when the baffle moves to the limit position, namely, the whole surveying instrument is exposed, at the moment, the push stop block is reset along the fixed block, the reset baffle is positioned on the surveying instrument, the lower part provides support for the surveying instrument, thereby playing a good supporting role, the first gear 411 is screwed, the winding wheel 410 can be operated to rotate, thereby realizing the winding and unwinding of the rope body 412, the balancing weight 44 is lowered through the paying off form, then, the position of the surveying instrument can be determined clearly through the direction of the bottom pin 45, meanwhile, the height of the support leg of the equipment is adjusted to adapt to the fluctuation of the ground, so that the possibility of equipment toppling is avoided, then, the equipment is adjusted again, so that the bottom pin points to the specified position, namely, the support leg can be fixed, if the measuring ground is a flat cement ground, the following steps are not needed, if the measuring ground is a rugged mud ground, the second sliding block 72 is driven to move along the sixth cavity 71 through the way of stepping on the pedal 77 by feet, then, the contact pin 73 is inserted into the ground, in the process, when the pedal is forced to turn over outwards, the extrusion block 810 on the rotating pedal pushes the fourth sliding block 86 to move, so that the second one-way tooth 88 on the fourth sliding block is contacted with the first one-way tooth 83, and the one-way effect is achieved, when the second slider 72 moves downwards along with the pedal, the fourth slider 86 continuously pushes the third slider to retract inwards, so that the second slider moves downwards, and when the foot leaves the pedal, the second slider is engaged with the first one-way teeth and the second one-way teeth to limit the positions, so that the stability after the contact pins are inserted into the ground is realized, meanwhile, when the pedal rotates to a limit position, namely, when the pedal is vertical to the legs, the clamping block arranged on the second slider is clamped into the clamping port under the driving force of the fifth elastic piece 812, so that the fixation is formed, when the fixation is completed, the spherical block 23 is waited to stop moving, if the movement amplitude is too large, the amplitude can be reduced in a manual mode, when the pedal stops completely, the adjusting wheel 510 is screwed by hand to rotate, the adjusting wheel is controlled to rotate by matching between the third gear and the first convex teeth, and the rotating ring is pushed to move in the first slider 53 in the first through rod 56 in the first through groove 52, so that the friction block 54 on the first slider is in contact with the surface of the ball, and the ball is stopped. At this point it becomes device commissioning complete. If need demolish, then dial the footboard along the direction of extrusion fifth elastic component with one with the foot, the roll-off in the joint mouth will be followed to the joint piece this moment, and the footboard resets under the effect of fourth elastic component, and the fourth slider has lost the extrusion of extrusion piece simultaneously to retracting, can not carry out the joint with first one-way tooth, the second slider will reset this moment, thereby makes the contact pin inwards retract.

While there have been shown and described what are at present considered to be the basic principles and essential features of the invention and advantages thereof, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A construction project cost on-site surveying and mapping device comprises a surveying and mapping instrument (1) and a support frame (2) with an automatic adjusting function; the method is characterized in that: the supporting frame (2) comprises a base (21), a telescopic support (3) rotatably connected to the base, a first cavity (22) arranged in the base, a spherical block (23) rotatably arranged in the first cavity, a rolling piece (24) arranged on the side wall of the first cavity, a first limiting block (25) arranged on the spherical block, a soft pad (26) arranged on the side wall of the first cavity, a counterweight structure (4) arranged below the spherical block, a rotation stopping structure (5) used for fixing the spherical block and a containing structure (6) used for containing and protecting a surveying and mapping instrument; the counterweight structure (4) comprises a fixed column (41) arranged at the bottom of the spherical block, an extension pipe (42) sleeved on the fixed column, a counterweight pipe (43) sleeved on the extension pipe, a counterweight block (44) arranged at the bottom of the counterweight pipe, a bottom needle (45) arranged below the counterweight block, a second limiting block (46) arranged at the bottom of the fixed column, a third limiting block (47) arranged at the bottom of the extension pipe, a first block (48) sleeved at the middle section of the fixed column, a second cavity (49) arranged in the first block, a winding roll (410) arranged in the second cavity, a first gear (411) used for winding the winding roll, and a rope body (412) with one end wound on the winding roll and the other end fixedly connected with the counterweight block; the rotation stopping structure (5) comprises a third cavity (51) arranged in the base, a first through groove (52) arranged on the side wall of the third cavity, a first sliding block (53) capable of moving back and forth in the first through groove, a friction block (54) arranged on the first sliding block, a rotating ring (55) capable of rotating in the third cavity, a first rotating rod (56) with two ends respectively rotatably connected to the inner wall of the rotating ring and the first sliding block, a first convex tooth (57) arranged below the rotating ring, a fourth cavity (58) arranged below the third cavity, a third gear (59) arranged in the fourth cavity and an adjusting wheel (510) used for controlling the third gear to rotate; the containing structure (6) comprises an accommodating cavity (61) arranged in the spherical block, a first sliding groove (62) arranged on the side wall of the accommodating cavity, a support (63) arranged below the surveying instrument, extending blocks (64) arranged on two sides of the support and capable of moving back and forth in the first sliding groove, a fixed block (65) arranged on the first limiting block, a baffle (66) capable of moving back and forth in the fixed block and fourth limiting blocks (67) arranged at two ends of the baffle; the telescopic support (3) comprises a first rotating part (31) arranged on the base, a first rotating block (32) arranged on the first rotating part, a fifth cavity (33) arranged in the first rotating block, a support leg (34) capable of moving back and forth in the fifth cavity, a rubber cushion block (35) arranged at the tail end of the support, a second through groove (36) arranged on the support leg, a second convex tooth (37) arranged on the side wall of the second through groove, a second gear (38) arranged in the second through groove, a manual wheel (39) arranged outside the first rotating block and used for driving the second gear to rotate, and a fixing structure (7) arranged at the tail end of the support leg; the fixing structure (7) comprises a sixth cavity (71) arranged at the tail end of the supporting leg, a second sliding block (72) capable of moving back and forth in the sixth cavity, a contact pin (73) arranged on the second sliding block, a first elastic piece (74) arranged in the sixth cavity and used for resetting the contact pin, a second block body (75) connected with the second sliding block, a central rod (76) arranged on the second block body, a pedal (77) sleeved on the central rod, an oblique angle (78) arranged at the outer end of the pedal and a one-way structure (8) used for fixing the second sliding block to move; the unidirectional structure (8) comprises a seventh cavity (81) arranged on the side wall of the sixth cavity, a third sliding block (82) capable of moving back and forth in the seventh cavity, first unidirectional teeth (83) arranged on the third sliding block, a second elastic part (84) arranged in the seventh cavity and used for resetting the third sliding block, an eighth cavity (85) arranged in the second sliding block, a fourth sliding block (86) capable of moving back and forth in the eighth cavity, a third elastic part (87) arranged in the eighth cavity and used for resetting the fourth sliding block, a second unidirectional tooth (88) arranged on the fourth sliding block, a ninth cavity (89) arranged below the eighth cavity, an extrusion block (810) arranged on the pedal and used for pushing the fourth sliding block, a fourth elastic part (811) arranged on the second block and used for resetting the pedal, a fifth elastic part (812) sleeved on the central rod, a clamping block (813) arranged on the pedal and a clamping port (814) arranged on the second block.