Building engineering surveying and mapping device

Abstract

The invention relates to the technical field of surveying and mapping devices, in particular to a constructional engineering surveying and mapping device which comprises a protective cover, an installation disc and supporting legs, after the installation disc is stabilized, the installation disc is limited to rotate in a protective cavity, then a total station is installed on the installation disc, and the total station can freely slide on the surface of the installation disc; if the total station encounters strong wind during measurement, once the protective cover topples over and the landing legs separated from the ground slide along the arc-shaped guide rails, firstly, the angle between the landing legs separated from the ground and the landing legs in contact with the ground is adjusted to be increased, the moment for resisting the toppling of the protective cover is increased, and the toppling of the protective cover is avoided; therefore, the damage probability of the internal structure of the total station is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of surveying and mapping devices, and particularly to a surveying and mapping device for construction projects. Background Art

[0002] In the field of construction project surveying and mapping, the total station, as a commonly used and important measuring instrument, its performance and stability play a key role in the accuracy and efficiency of surveying and mapping work. With the continuous development and diversification of construction projects, the total station is widely used in various complex environments and scenarios. Currently, the general total station lacks an effective anti-tipping structure. In the actual surveying and mapping work of construction projects, the use environment of the total station is complex and changeable. Among them, strong wind weather is one of the more common and threatening external force factors. When the total station encounters strong wind, there is a certain risk of tipping. Once the total station tips over, there are many precision and important components integrated inside the total station. These components are crucial for the measurement accuracy and normal operation of the instrument. Tipping may cause these components to be impacted, vibrated or displaced, thereby damaging the internal structure of the instrument and affecting its measurement function. Summary of the Invention

[0003] The present invention provides a surveying and mapping device for construction projects to solve the problem that the existing surveying and mapping device is prone to tipping and damage when subjected to external forces.

[0004] The following technical scheme is adopted for a surveying and mapping device for construction projects of the present invention: A surveying and mapping device for construction projects includes a protective cover, a mounting plate and legs.

[0005] The protective cover is set to be spherical, and there is a protective cavity inside the protective cover; there is an object placement opening on the protective cover that communicates the protective cavity and the external environment; the outer side wall of the mounting plate is set to be an arc surface, the mounting plate is arranged in the protective cavity, the outer side wall of the mounting plate can abut against the inner side wall of the protective cover, and the mounting plate can rotate arbitrarily in the protective cavity; a total station can be installed on the mounting plate, and the total station can slide arbitrarily on the surface of the mounting plate; there are three legs, and there are three arc-shaped guide rails on the outer side wall of the protective cover. The plane where the arc-shaped guide rails are located passes through the center of the sphere of the protective cover, and the three arc-shaped guide rails are evenly distributed along the circumferential direction of the protective cover; one end of each leg is slidably arranged along one of the arc-shaped guide rails; the legs can be telescopically arranged, and the included angle between adjacent two legs is initially set to be the same; when the protective cover tips over, the legs that are separated from the ground can slide along the arc-shaped guide rails.

[0006] Further, an air cavity is provided inside the mounting disc. A plurality of through holes communicating the air cavity and the external environment are provided on the outer side wall of the mounting disc. An air pump is fixedly provided on the mounting disc, and the air pump can supply air to or extract air from the air cavity; a counterweight is provided on the mounting disc, and the counterweight has the same weight as the air pump. The counterweight and the air pump are evenly distributed along the circumferential direction of the mounting disc.

[0007] Further, the length of the leg has a first state and a second state, and the length in the first state is greater than the length in the second state. A pressure sensor is provided at one end of each leg away from the arc-shaped guide rail; a first control board is provided on the protective cover, and the first control board can receive the data of each pressure sensor; when the protective cover topples over, one of the legs is separated from the ground contact, and the first control board can control the leg separated from the ground contact to move along the arc-shaped guide rail in the first state along a first preset path; the first control board can also control the leg separated from the ground contact to move along the arc-shaped guide rail in the second state along a second preset path.

[0008] Further, the leg includes a first section and a second section. The first section is hollow inside, and one end of the second section is inserted into the inside of the first section; the first section is slidably arranged along the arc-shaped guide rail; a limiting groove is provided at one end of the second section inside the first section; a through hole is provided on the side wall of the first section, and a limiting block is slidably arranged in the through hole of the first section, and the limiting block can abut against the limiting groove; a tension spring is provided inside the first section, one end of the tension spring is fixedly connected to the inner end of the first section, and the other end of the tension spring is fixedly connected to the end of the second section. Initially, the tension spring is set in a state of being in tension, and the leg is in the second state. When the limiting groove abuts against the limiting block, the leg is in the first state.

[0009] Further, a control groove is provided on the protective cover, and a control block is slidably arranged in the control groove. The control block is connected to the limiting block by a traction rope; when the leg moves along the arc-shaped guide rail along the second preset path, the leg can push the control block to slide along the control groove. Through the transmission of the traction rope, the limiting block is separated from the limiting groove, so that the leg quickly shortens to the second state.

[0010] Furthermore, a rack is disposed in each of the arc-shaped guide rails. A driving motor is fixedly arranged at the end of the first section. A driving gear is fixedly arranged on the power output shaft of the driving motor. The driving gear is always engaged with the rack. The first control board can control the start and stop of the driving motor, and the rotation direction of the driving motor can be controlled by the first control board. When the support leg moves along the arc-shaped guide rail in the first preset path in the first state, the driving motor rotates clockwise. When the support leg moves along the arc-shaped guide rail in the second preset path in the second state, the driving motor rotates counterclockwise.

[0011] Furthermore, a sealing cover is arranged at the upper end of the total station instrument. A driving cylinder is fixedly arranged at the lower end of the total station instrument. The driving cylinder can extend and retract. When the driving cylinder is in the shortest state, the sealing cover can seal the object placing opening.

[0012] Furthermore, a first electromagnet is arranged at the lower end of the driving cylinder, and a second electromagnet is arranged on the mounting disc. The magnetic poles of the first electromagnet and the second electromagnet are opposite to each other. A second control board is arranged on the protective cover. The second control board can adjust the magnetic forces of the first electromagnet and the second electromagnet.

[0013] Furthermore, a plurality of air vent holes communicating the protective cavity and the external environment are arranged on the side wall of the protective cover. The plurality of air vent holes are evenly distributed along the circumferential direction of the protective cover.

[0014] Furthermore, a protective curtain is arranged at the position of each air vent hole. The protective curtain can seal the air vent hole. During the tipping process of the protective cover, the protective curtain seals the air vent hole.

[0015] The beneficial effects of the present invention are as follows: A building engineering surveying and mapping device of the present invention includes a protective cover, a mounting plate, and legs. During building engineering surveying and mapping, all three legs are stretched to the longest state, and then the angles between adjacent legs are adjusted to the same state. When adjusting the angle between adjacent legs, the legs slide along the arc-shaped guide rails. After the angle between adjacent legs is adjusted, when the legs are placed on the ground, there may be a concave condition at the position where the legs contact the ground, making the mounting plate in a non-horizontal state. Since the outer wall of the mounting plate is set as an arc surface and the mounting plate can rotate freely within the protective cavity, under the action of its own gravity, the mounting plate actively rotates within the protective cavity to keep the mounting plate in a horizontal state. After the mounting plate is stable, the rotation of the mounting plate within the protective cavity is restricted. Subsequently, the total station is installed on the mounting plate, and the total station can slide freely on the surface of the mounting plate to ensure that the total station can be aligned with the measurement reference point. If strong winds are encountered during the measurement, once the protective cover topples, the legs that are off the ground slide along the arc-shaped guide rails. First, the angle between the legs off the ground and the legs in contact with the ground is adjusted to increase, increasing the moment to resist the toppling of the protective cover and preventing the protective cover from toppling, thereby reducing the probability of damage to the internal structure of the total station.

[0016] Further, if increasing the angle between the legs off the ground and the legs in contact with the ground cannot prevent the toppling of the protective cover, at this time, the angle between the legs off the ground and the legs in contact with the ground is adjusted to decrease again. At this time, the length of the legs off the ground needs to be reduced first, and after the legs off the ground and the legs in contact with the ground are coplanar, they continue to slide along the arc-shaped guide rails until the legs off the ground come into contact with the ground again, so that the three legs form a support for the protective cover again, further preventing the toppling of the protective cover and reducing the probability of damage to the internal structure of the total station. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] Figure 1 It is a schematic structural diagram of a building engineering surveying and mapping device provided by an embodiment of the present invention; Figure 2 For Figure 1 The partial enlarged view at A in Figure 3 It is a top view of a building engineering surveying and mapping device provided by an embodiment of the present invention; Figure 4 ForFigure 3 Cross-sectional view in the B-B direction; Figure 5 is Figure 4 Partial enlarged view at C in; Figure 6 is Figure 4 Partial enlarged view at D in; Figure 7 State diagram when the leg of a building engineering surveying device provided by an embodiment of the present invention contacts the ground again after sliding along the arc-shaped guide rail during the tipping of the protective cover; Figure 8 State diagram of a building engineering surveying device provided by an embodiment of the present invention when the protective cover has no ventilation holes.

[0019] In the figure: 110, protective cover; 111, control groove; 112, storage opening; 120, arc-shaped guide rail; 121, rack; 130, mounting plate; 131, air cavity; 140, leg; 141, first section; 142, second section; 143, limiting groove; 144, limiting block; 145, tension spring; 150, air pump; 160, counterweight; 170, control block; 180, towing rope; 210, driving motor; 211, driving gear; 220, total station; 230, sealing cover; 240, driving cylinder; 250, ventilation hole; 260, protective curtain. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meanings. And the "connection" and "coupling" mentioned in this application, unless otherwise specified, both include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention.

[0022] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply indicates that the horizontal height of the first feature is less than that of the second feature.

[0023] As Figures 1 to 8 shown, a building engineering surveying device provided by an embodiment of the present invention includes a protective cover 110, a mounting plate 130 and legs 140.

[0024] The protective cover 110 is set to be spherical. There is a protective cavity inside the protective cover 110, and the contour of the protective cavity is spherical. A storage opening 112 communicating the protective cavity and the external environment is provided on the protective cover 110. After the storage opening 112 is provided on the protective cover 110, the external contour of the protective cover 110 is slightly in the shape of three - quarters of a sphere. Three arc - shaped guide rails 120 are provided on the outer side wall of the protective cover 110. The arc - shaped guide rails 120 are set to be U - shaped, and the plane where the arc - shaped guide rails 120 are located passes through the center of the sphere of the protective cover 110. The three arc - shaped guide rails 120 are evenly distributed along the circumferential direction of the protective cover 110. There is an intersection point among the three arc - shaped guide rails 120. When the storage opening 112 faces upward, the intersection point of the three arc - shaped guide rails 120 is directly below the center of the sphere.

[0025] The outer side wall of the mounting plate 130 is set to be an arc surface. The mounting plate 130 is a sheet - like structure cut from a sphere. The outer diameter of the sphere from which the mounting plate 130 is cut is equal to the inner diameter of the protective cavity, so that the mounting plate 130 can rotate arbitrarily in the protective cavity. When the mounting plate 130 is in a horizontal state, the diameter length of the upper end surface of the mounting plate 130 is less than the diameter of the protective cavity, and the diameter length of the lower end surface of the mounting plate 130 is less than the diameter of the protective cavity. During the manufacturing process, the mounting plate 130 is manufactured in segments to facilitate setting the mounting plate 130 in the protective cavity. Due to the fact that the mounting plate 130 has a certain gravity and the diameter of the mounting plate 130 is set, the mounting plate 130 maintains a horizontal state in the protective cavity. When the mounting plate 130 is in a horizontal state, the rotation of the mounting plate 130 in the protective cavity is restricted. A total station 220 can be installed on the upper end surface of the mounting plate 130, and the total station 220 can slide arbitrarily on the upper end surface of the mounting plate 130, so as to ensure that the total station 220 is aligned with the measurement reference point.

[0026] There are three outriggers 140. One end of each outrigger 140 is slidably arranged along an arc-shaped guide rail 120. The outrigger 140 can be telescopically arranged. In the initial state, for the convenience of transportation, the outrigger 140 is in the shortest state, and the three outriggers 140 are in a parallel state with each other. When surveying and mapping is required, each outrigger 140 is driven to slide along an arc-shaped guide rail 120. At the same time, the outrigger 140 is towed to extend to the longest state, and the angle between two adjacent outriggers 140 is adjusted to be equal, so as to ensure that the lower ends of the three outriggers 140 are in the same horizontal plane. When the outrigger 140 is placed on the ground, due to different degrees of depression at different positions on the ground, if the mounting plate 130 is in a horizontal state in the initial state, when the outrigger 140 touches the ground, the mounting plate 130 tilts. Under the action of its own gravity, the mounting plate 130 actively rotates in the protective cavity, so that the mounting plate 130 rotates to a horizontal state. When the outrigger 140 touches the ground and the mounting plate 130 is in a horizontal state, the rotation of the mounting plate 130 in the protective cavity will be restricted. When the protective cover 110 is tilted by an external force, at least one outrigger 140 will leave the ground. The outrigger 140 that leaves the ground will slide along the arc-shaped guide rail 120. Initially, it is set that the outrigger 140 is in the middle of the arc-shaped guide rail 120. At this time, the outrigger 140 can slide clockwise or counterclockwise along the arc-shaped guide rail 120. First, adjust the outrigger 140 to slide counterclockwise along the arc-shaped guide rail 120, so that the angle between the outrigger 140 that leaves the ground and the outrigger 140 that touches the ground increases, increasing the moment to resist the tilting of the protective cover 110 and preventing the protective cover 110 from tilting; if the tilting of the protective cover 110 cannot be hindered after adjusting the increase in the angle between the outrigger 140 that leaves the ground and the outrigger 140 that touches the ground, at this time, adjust the outrigger 140 to slide clockwise along the arc-shaped guide rail 120 again, so that the angle between the outrigger 140 that leaves the ground and the outrigger 140 that touches the ground decreases. At this time, it is necessary to first reduce the length of the outrigger 140 that leaves the ground, and continue to slide clockwise along the arc-shaped guide rail 120 after the outrigger 140 that leaves the ground and the outrigger 140 that touches the ground are coplanar until the outrigger 140 that leaves and touches the ground touches the ground again, so that the three outriggers 140 form a support for the protective cover 110 again, further preventing the protective cover 110 from tilting.

[0027] A surveying and mapping device for construction projects according to the present invention. During the surveying and mapping of construction projects, all three legs 140 are stretched to the longest state, and then the angles between adjacent legs 140 are adjusted to the same state. When adjusting the angle between adjacent legs 140, the legs 140 slide along the arc-shaped guide rails 120. After the adjustment of the angle between adjacent legs 140 is completed and the legs 140 are placed on the ground, there may be a sunken condition at the positions where the legs 140 contact the ground, making the mounting plate 130 in a non-horizontal state. Since the outer wall of the mounting plate 130 is set as an arc surface and the mounting plate 130 can rotate freely within the protection chamber, under the action of its own gravity, the mounting plate 130 actively rotates within the protection chamber to keep the mounting plate 130 in a horizontal state. After the mounting plate 130 is stable, the rotation of the mounting plate 130 within the protection chamber is restricted. Subsequently, the total station 220 is installed on the mounting plate 130, and the total station 220 can slide freely on the surface of the mounting plate 130 to ensure that the total station 220 can be aligned with the measurement reference point. If strong winds are encountered during the measurement, once the protective cover 110 topples, the legs 140 that are off the ground slide along the arc-shaped guide rails 120. First, the angle between the legs 140 that are off the ground and the legs 140 that are in contact with the ground is adjusted to increase, increasing the moment to resist the toppling of the protective cover 110 and avoiding the toppling of the protective cover 110, thereby reducing the probability of damage to the internal structure of the total station 220. Further, if increasing the angle between the legs 140 that are off the ground and the legs 140 that are in contact with the ground cannot prevent the toppling of the protective cover 110, at this time, the angle between the legs 140 that are off the ground and the legs 140 that are in contact with the ground is adjusted to decrease again. At this time, the length of the legs 140 that are off the ground needs to be reduced first, and after the legs 140 that are off the ground and the legs 140 that are in contact with the ground are coplanar, they continue to slide along the arc-shaped guide rails 120 until the legs 140 that are off the ground and in contact with the ground touch the ground again, so that the three legs 140 form a support for the protective cover 110 again, further preventing the toppling of the protective cover 110, and further reducing the probability of damage to the internal structure of the total station 220.

[0028] In one embodiment, the installation disk 130 has an air cavity 131 inside, and a plurality of through holes communicating the air cavity 131 with the external environment are provided on the outer side wall of the installation disk 130. An air pump 150 is fixedly arranged on the installation disk 130, and the air pump 150 can supply air to or extract air from the air cavity 131. During the process when the supporting leg 140 just touches the ground, the air pump 150 is in a state of supplying air to the air cavity 131, and the gas in the air cavity 131 flows outwards through the through holes. Since the outer side wall of the installation disk 130 is in contact with the inner side wall of the protection cavity, and there is a certain frictional resistance when the inner side wall of the protection cavity and the outer side wall of the installation disk 130 move relative to each other, to ensure that the installation disk 130 can rotate smoothly in the protection cavity, by using the air pump 150 to supply air into the air cavity 131, the gas flowing outwards through the through holes can form an air film between the installation disk 130 and the protection cavity, thereby reducing the frictional force between the inner side wall of the protection cavity and the outer side wall of the installation disk 130, and further improving the accuracy of the installation disk 130 rotating to the horizontal state in the protection cavity. A counterweight 160 is arranged on the installation disk 130, and the counterweight 160 has the same weight as the air pump 150. The counterweight 160 and the air pump 150 are evenly distributed along the circumferential direction of the installation disk 130. By arranging the counterweight 160 on the installation disk 130 and fixedly connecting both the counterweight 160 and the air pump 150 to the lower end surface of the installation disk 130, the center of gravity of the installation disk 130 is kept stable. After the supporting leg 140 touches the ground and the installation disk 130 rotates to the horizontal state, the air pump 150 extracts the gas in the air cavity 131 outwards, and the gas in the external environment enters the air cavity 131 through the through holes. Under the action of negative pressure, the installation disk 130 is kept stationary in the protection cavity.

[0029] In one embodiment, the outrigger 140 has a first state and a second state, and the length of the first state is greater than that of the second state. For the convenience of transporting the outrigger 140, in the initial state, the outrigger 140 is in the second state. When the protective cover 110 needs to be supported, the outrigger 140 is switched from the second state to the first state. Moreover, the lengths of the three outriggers 140 are the same. A pressure sensor is provided at one end of each outrigger 140 away from the arc-shaped guide rail 120. When the outrigger 140 contacts the ground, the extrusion force between the outrigger 140 and the ground can be detected by the pressure sensor. A first control board is provided on the protective cover 110, and the first control board can receive the data of the three pressure sensors. The first control board can control any one of the outriggers 140 to move along the arc-shaped guide rail 120. When the protective cover 110 topples, one of the outriggers 140 gradually disengages from the ground, and the pressure value detected by the pressure sensor provided on the outrigger 140 that gradually disengages from the ground gradually decreases. The first control board can control the outrigger 140 that disengages from the ground to move along the arc-shaped guide rail 120 in a first preset path in the first state. The first preset path is that the outrigger 140 that disengages from the ground slides counterclockwise along the arc-shaped guide rail 120 in the first state. Among them, when the outrigger 140 moves along the arc-shaped guide rail 120 in the first preset path, the included angle between the outrigger 140 that disengages from the ground and the outrigger 140 that contacts the ground gradually increases, thereby increasing the moment to resist the toppling of the protective cover 110 and reducing the force for the protective cover 110 to continue toppling. After the first control board controls the outrigger 140 that disengages from the ground to move along the arc-shaped guide rail 120 in the first preset path in the first state, the protective cover 110 still continues to topple. During this process, the first control board controls the outrigger 140 that disengages from the ground to move along the arc-shaped guide rail 120 in a second preset path in the second state. The second preset path is that the outrigger 140 that disengages from the ground slides clockwise along the arc-shaped guide rail 120 in the second state. Among them, when the outrigger 140 moves along the arc-shaped guide rail 120 in the second preset path, the outrigger 140 first changes from the first state to the second state, and the length of the outrigger 140 is shortened to the shortest state. The included angle between the outrigger 140 that disengages from the ground and the outrigger 140 that contacts the ground gradually decreases. When the three outriggers 140 are in the same plane, the outrigger 140 that disengages from the ground continues to rotate until the outrigger 140 that disengages from the ground contacts the ground again, so that the three outriggers 140 form a support for the protective cover 110 again. At this time, the storage opening 112 provided on the protective cover 110 is in an inclined state, and the three outriggers 140 further prevent the protective cover 110 from toppling.

[0030] In one embodiment, the outrigger 140 includes a first section 141 and a second section 142. The first section 141 is hollow inside. One end of the first section 141 is slidably arranged along the arc-shaped guide rail 120. The second section 142 is coaxially arranged with the first section 141. One end of the second section 142 is slidably arranged coaxially inside the first section 141. A limiting groove 143 is provided at one end of the second section 142 inside the first section 141. A through hole penetrating the side wall of the first section 141 is provided on the first section 141. A limiting block 144 is slidably arranged in the through hole. The limiting block 144 is arranged along the radial direction of the first section 141. In the initial state, the outrigger 140 is in the shortest second state. During the process of stretching and elongating the outrigger 140, one end of the second section 142 slides inside the first section 141. When the outrigger 140 reaches the longest first state, the limiting block 144 can slide along the through hole, and the end of the limiting block 144 can enter the limiting groove 143. When the limiting block 144 cooperates with the limiting groove 143, it can hinder the relative movement between the first section 141 and the second section 142. Further, a tension spring 145 is arranged inside the first section 141. One end of the tension spring 145 is fixedly connected to the inner end of the first section 141, and the other end of the tension spring 145 is fixedly connected to the end of the second section 142 inside the first section 141. The tension spring 145 is always in a state of being in tension. In the initial state, under the action of the tension spring 145, the outrigger 140 is in the shortest second state. When it is necessary to elongate the outrigger 140, the second section 142 is driven to move relative to the first section 141, and the tension spring 145 is further stretched. When the first control board controls the outrigger 140 that is disengaged from the ground to move along the arc-shaped guide rail 120 in the second state in a second preset path, the staff drives the limiting block 144 to disengage from the limiting groove 143. Under the action of the restoring force of the tension spring 145, the outrigger 140 quickly changes from the first state to the second state.

[0031] In one embodiment, a contact plate is provided at the end of the second section 142 of each outrigger 140 that contacts the ground. The contact plate is ball-jointed with the second section 142 to ensure that the contact plate can stably contact the ground.

[0032] In one embodiment, the protective cover 110 is provided with a control slot 111, and a control block 170 is slidably provided in the control slot 111. The control block 170 is connected to the limit block 144 through a traction rope 180. In the initial state, the limit block 144 is not in the limit slot 143, the control block 170 is at one end of the control slot 111, and the traction rope 180 is in a relaxed state. At this time, the length of the leg 140 is in the second state. When the leg 140 is pulled and extended to the first state by the staff, the staff inserts the limit block 144 into the limit slot 143. At this time, the traction rope 180 is in a relaxed state. When the leg 140 moves along the arc guide rail 120 in the first state in the first preset path, the control block 170 remains stationary in the control groove 111, and the traction rope 180 is gradually tightened, but the limit block 144 does not leave the limit groove 143; when the leg 140 moves along the arc guide rail 120 in the second preset path, the leg 140 can push the control block 170 to slide along the control groove 111, and the starting point of the movement of the leg 140 along the arc guide rail 120 is at the end point of the first preset path. At this time, the tension of the traction rope 180 gradually decreases, and the leg 140 During the movement along the arc guide rail 120 in the second preset path, when the support leg 140 moves to the starting point of the first preset path along the arc guide rail 120, the traction rope 180 returns to the most relaxed state. As the support leg 140 continues to move along the arc guide rail 120 in the second preset path, the support leg 140 pushes the control block 170 to slide along the control groove 111. During this process, the traction rope 180 is quickly tensioned. Through the transmission of the traction rope 180, the limit block 144 disengages from the limit groove 143. Under the action of the restoring force of the tension spring 145, the support leg 140 is quickly shortened to the second state.

[0033] In one embodiment, a rack 121 is provided in each arc guide rail 120, and the rack 121 is cut off in the area where the three arc guide rails 120 intersect to prevent the racks 121 in the three arc guide rails 120 from interlacing with each other. A drive motor 210 is fixedly provided at the end of the first section 141, and a drive gear 211 is fixedly provided on the power output shaft of the drive motor 210. The drive gear 211 can rotate on the first section 141, and the drive gear 211 is always meshed with the rack 121. The first control panel can control the start and stop of the drive motor 210, and the rotation direction of the drive motor 210 can be controlled by the first control panel. When the leg 140 moves along the arc guide rail 120 in the first state in the first preset path, the drive motor 210 rotates clockwise, so that the angle between the leg 140 that is off the ground and the leg 140 that is in contact with the ground gradually increases. When the leg 140 moves along the arc guide rail 120 in the second state in a second preset path, the drive motor 210 rotates counterclockwise, so that the angle between the leg 140 disengaged from contacting the ground and the leg 140 contacting the ground first decreases and then increases in the reverse direction.

[0034] In one embodiment, a sealing cover 230 is provided at the upper end of the total station 220. The sealing cover 230 is arranged as an arc-shaped protrusion. The sealing cover 230 can seal the storage opening 112. A driving cylinder 240 is fixedly arranged at the lower end of the total station 220. The driving cylinder 240 can be telescopically arranged. The driving cylinder 240 is perpendicularly arranged with the mounting plate 130. When the total station 220 is installed on the mounting plate 130, the length of the driving cylinder 240 is in the longest state. At this time, the sealing cover 230 is in a state of not sealing the storage opening 112. When the protective cover 110 is tilted, the driving cylinder 240 can quickly shorten, so that the sealing cover 230 seals the storage opening 112, preventing objects in the external environment from damaging the total station 220 through the storage opening 112.

[0035] In one embodiment, a first electromagnet is provided at the lower end of the driving cylinder 240, and a second electromagnet is provided on the mounting plate 130. The magnetic poles of the first electromagnet and the second electromagnet are opposite. When the total station 220 is arranged on the mounting plate 130, it is adsorbed by the magnetic force between the first electromagnet and the second electromagnet, so as to ensure that when the mounting plate 130 is in a stable horizontal state, the total station 220 can adjust its position on the mounting plate 130. A second control board is provided on the protective cover 110. The second control board can adjust the magnetic force between the first electromagnet and the second electromagnet. When the magnetic force between the first electromagnet and the second electromagnet changes, the magnetic attraction between the first electromagnet and the second electromagnet changes. Further, in the initial state, the magnetic attraction between the first electromagnet and the second electromagnet is in the minimum state. At this time, the staff can move the position of the driving cylinder 240 on the mounting plate 130, so as to ensure that the total station 220 is aligned with the measurement reference point. After the total station 220 is aligned with the measurement reference point, the second control board adjusts the magnetic force between the first electromagnet and the second electromagnet to increase simultaneously, so that the magnetic force between the first electromagnet and the second electromagnet is in the maximum state, and the staff cannot easily move the position of the driving cylinder 240 on the mounting plate 130, thus ensuring sufficient stability during the working process of the total station 220.

[0036] In one embodiment, a plurality of ventilation holes 250 communicating the protective cavity and the external environment are provided on the side wall of the protective cover 110. The plurality of ventilation holes 250 are evenly distributed along the circumferential direction of the protective cover 110. By providing the plurality of ventilation holes 250, the ventilation degree of the protective cover 110 is increased, and the probability of the protective cover 110 being blown down by the wind is reduced.

[0037] In one of the embodiments, a protective curtain 260 is provided at the position of each ventilation hole 250. The protective curtain 260 can block the ventilation hole 250. During the tipping process of the protective cover 110, the protective curtain 260 blocks the ventilation hole 250. Further, a traction cylinder is provided on the side wall of each ventilation hole 250. When the ventilation hole 250 is in a fully conductive state, the length of the traction cylinder is in the smallest state. During the tipping process of the protective cover 110, the traction cylinder gradually elongates, and the traction cylinder drives the protective curtain 260 to block the ventilation hole 250, preventing objects in the external environment from damaging the total station 220 through the ventilation hole 250.

[0038] The foregoing are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A building engineering surveying and mapping device, characterized in that, Comprising: A protective cover, the protective cover is set to be spherical, and there is a protective cavity inside the protective cover; a storage opening communicating the protective cavity and the external environment is provided on the protective cover; An installation plate, the outer side wall of the installation plate is set to be an arc surface, the installation plate is arranged inside the protective cavity, the outer side wall of the installation plate can abut against the inner side wall of the protective cover, and the installation plate can rotate arbitrarily inside the protective cavity; a total station can be installed on the installation plate, and the total station can slide arbitrarily on the surface of the installation plate; Legs, there are three legs, three arc-shaped guide rails are provided on the outer side wall of the protective cover, the plane where the arc-shaped guide rails are located passes through the center of the sphere of the protective cover, and the three arc-shaped guide rails are evenly distributed along the circumferential direction of the protective cover; one end of each leg is slidably arranged along one of the arc-shaped guide rails; the legs can be telescopically arranged, and the included angle between adjacent two legs is initially set to be the same; when the protective cover topples, the leg that is separated from the ground can slide along the arc-shaped guide rail.

2. The a building engineering surveying and mapping device according to claim 1, characterized in that: An air cavity is provided inside the installation plate, a plurality of through holes communicating the air cavity and the external environment are provided on the outer side wall of the installation plate, an air pump is fixedly arranged on the installation plate, and the air pump can supply air or extract air to the air cavity; a counterweight is arranged on the installation plate, the weight of the counterweight is the same as that of the air pump, and the counterweight and the air pump are evenly distributed along the circumferential direction of the installation plate.

3. A building engineering surveying and mapping device according to claim 1, characterized in that: The length of the leg has a first state and a second state, the length in the first state is greater than the length in the second state, and a pressure sensor is arranged at one end of each leg away from the arc-shaped guide rail; a first control board is arranged on the protective cover, and the first control board can receive the data of each pressure sensor; when the protective cover topples, one of the legs is separated from the ground contact, and the first control board can control the leg separated from the ground contact to move along the arc-shaped guide rail in the first state along a first preset path; the first control board can also control the leg separated from the ground contact to move along the arc-shaped guide rail in the second state along a second preset path.

4. The a building engineering surveying and mapping device according to claim 3, characterized in that: The leg includes a first section and a second section, the first section is hollow inside, and one end of the second section is inserted into the inside of the first section; The first section is slidably arranged along the arc-shaped guide rail; a limiting groove is arranged at one end of the second section inside the first section; a through hole is arranged on the side wall of the first section, a limiting block is slidably arranged in the through hole of the first section, and the limiting block can abut against the limiting groove; a tension spring is arranged inside the first section, one end of the tension spring is fixedly connected to the inner end of the first section, and the other end of the tension spring is fixedly connected to the end of the second section. Initially, the tension spring is set to be in a state of storing energy, and the leg is in the second state. When the limiting groove abuts against the limiting block, the leg is in the first state.

5. An architectural engineering surveying and mapping device according to claim 4, characterized in that: The protective cover is provided with a control groove, in which a control block is slidably provided, and the control block is connected to the limit block by a traction rope; when the support leg moves along the arc guide rail along the second preset path, the support leg can push the control block to slide along the control groove, and through the transmission of the traction rope, the limit block disengages from the limit groove, so that the support leg is quickly shortened to the second state.

6. The a building engineering surveying and mapping device according to claim 4, characterized in that: A rack is provided in each of the arc-shaped guide rails, a driving motor is fixedly provided at the end of the first section, a driving gear is fixedly provided on the power output shaft of the driving motor, the driving gear is always engaged with the rack, the first control panel can control the start and stop of the driving motor, and the rotation direction of the driving motor can be controlled by the first control panel, when the leg moves along the arc-shaped guide rail with a first preset path in the first state, the driving motor rotates clockwise, and when the leg moves along the arc-shaped guide rail with a second preset path in the second state, the driving motor rotates counterclockwise.

7. An architectural engineering surveying and mapping device according to claim 1, characterized in that: A blocking cover is arranged at the upper end of the total station, and a driving cylinder is fixedly arranged at the lower end of the total station. The driving cylinder can be extended and retracted. When the driving cylinder is in the shortest state, the blocking cover can block the storage opening.

8. An architectural engineering surveying and mapping device according to claim 7, characterized in that: A first electromagnet is arranged at the lower end of the driving cylinder, and a second electromagnet is arranged on the mounting plate. The magnetic pole of the first electromagnet is opposite to the magnetic pole of the second electromagnet. A second control board is arranged on the protective cover, and the second control board can adjust the magnetic force of the first electromagnet and the second electromagnet.

9. The a building engineering surveying and mapping device according to claim 1, characterized in that: The side wall of the protective cover is provided with a plurality of air holes connecting the protective cavity and the external environment, and the plurality of air holes are evenly distributed along the circumferential direction of the protective cover.

10. An architectural engineering surveying and mapping device according to claim 9, characterized in that: A protective curtain is arranged at the position of each of the air holes, and the protective curtain can block the air holes. During the tilting process of the protective cover, the protective curtain blocks the air holes.

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