Construction engineering cost on-site surveying and mapping equipment

Abstract

The invention provides on-site surveying and mapping equipment for construction engineering cost, and relates to the technical field of construction surveying and mapping. The construction engineering cost field surveying and mapping equipment comprises a supporting frame, a total station body and a cleaning mechanism, the total station body is connected to the supporting frame and comprises a shell assembly and an observation assembly, the shell assembly comprises a bottom shell and side shells on the two sides of the bottom shell, and the observation assembly is rotatably arranged between the two side shells and comprises an eyepiece and an objective lens. The cleaning mechanism is arranged on the bottom shell, and when the observation assembly rotates to the vertical state, the cleaning mechanism is used for cleaning the objective lens. According to the invention, the observation assembly is rotated to the vertical state, the objective lens is vertically downward and directly faces the bottom shell, and the cleaning mechanism is arranged on the bottom shell, so that the cleaning mechanism can just clean flying dust on the objective lens, manual cleaning is not needed, and the surveying and mapping efficiency of a construction engineering cost site is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of building surveying and mapping, and more specifically, to a on-site surveying and mapping device for building project cost. Background Art

[0002] In the current process of building project cost, surveying and mapping work, as one of the key links, its accuracy and efficiency directly affect the accuracy and timeliness of project cost. Traditional surveying and mapping devices, such as total stations, distance meters, etc., although they can meet the needs of building engineering surveying and mapping to a certain extent, there are still many inconveniences and efficiency bottlenecks in actual applications.

[0003] During on-site surveying and mapping, due to the complex and changeable environment of building projects, the objective lens of the surveying and mapping device, especially its observation end, is very easy to be contaminated by pollutants such as flying dust and fine sand. These pollutants will not only affect the clarity of observation, thus affecting the accuracy of surveying and mapping data, but also usually require surveyors to clean it manually, which not only increases the workload of surveyors, but also prolongs the surveying and mapping time and reduces work efficiency. Summary of the Invention

[0004] To solve the above problems, the present invention provides a on-site surveying and mapping device for building project cost.

[0005] The present invention provides a on-site surveying and mapping device for building project cost, including a support frame, a total station body and a cleaning mechanism. The total station body is connected to the support frame. The total station body includes a housing assembly and an observation assembly. The housing assembly includes a bottom shell and side shells on both sides of the bottom shell. The observation assembly is rotatably arranged between the two side shells. The observation assembly includes an eyepiece and an objective lens. The cleaning mechanism is arranged on the bottom shell. When the observation assembly rotates to the vertical state, the cleaning mechanism is used to clean the objective lens.

[0006] Optionally, the cleaning mechanism includes a box body, a support plate, a lifting assembly and a dust sticking sticker. The box body is connected to the bottom shell. The top of the box body is an open structure. The support plate is slidably arranged on the upper part of the inner wall of the box body. The dust sticking sticker is arranged on the upper surface of the support plate. The lifting assembly is arranged on the lower part of the inner wall of the box body. The lifting assembly is used to drive the support plate to move vertically so that the dust sticking sticker abuts against the objective lens.

[0007] Optionally, the cleaning mechanism further includes an air suction and exhaust mechanism, which is used to provide an adsorption force and a release force for the dust sticking sticker.

[0008] Optionally, the lifting assembly includes a lead screw, a lifting plate, a support rod, a worm gear and a worm. One end of the lead screw is rotatably connected to the inner bottom surface of the box body, and the other end of the lead screw extends vertically upward. The worm gear is sleeved on the lead screw, the worm is meshed and connected with the worm gear, the lifting plate is threadedly connected to the lead screw, the lifting plate is slidably connected to the inner wall of the box body, one end of the support rod is connected to the lifting plate, and the other end of the support rod is connected to the support plate.

[0009] Optionally, the air intake and exhaust mechanism includes an air pipe. A plurality of air holes are provided on the support plate, and each air hole is connected to an air pipe, and the air pipe is used for inhaling or exhausting air.

[0010] Optionally, the air intake and exhaust mechanism further includes an air storage box, a piston, a push rod, a spring and a pressing plate. The air storage box is arranged in the box body and located between the lifting plate and the support plate. The piston is slidably connected to the inner wall of the air storage box. One end of the push rod is connected to the piston, and the other end of the push rod passes through the bottom surface of the air storage box and is connected to the pressing plate. The spring is sleeved on the push rod, and both ends of the spring respectively abut against the bottom surface of the air storage box and the upper surface of the pressing plate. One end of the air pipe is connected to the bottom end of the air hole, and the other end of the air pipe is communicated with the lower part of the inner cavity of the air storage box.

[0011] Optionally, a knob is connected to the end of the worm away from the worm gear and passes through the side shell.

[0012] Optionally, a rubber layer is provided on the upper surface of the support plate.

[0013] Optionally, the support frame includes support legs and a mounting seat. Three support legs are circumferentially arranged along the mounting seat, and the mounting seat is used for mounting the total station body.

[0014] Optionally, the support leg includes a first support rod, a second support rod and a locking member. One end of the first support rod is rotatably connected to the mounting seat, the other end of the first support rod is slidably connected to the second support rod, the second support rod is used for sliding along the extending direction of the first support rod, and the locking member is connected to the first support rod and used for limiting the second support rod.

[0015] The beneficial effect of the on-site surveying and mapping equipment for construction project cost of the present invention is that when surveying on the construction project cost site, when dust is observed on the objective lens through the eyepiece, the observation assembly is rotated to the vertical state, and the objective lens is vertically downward and directly faces the bottom shell. Since the cleaning mechanism is arranged on the bottom shell, the cleaning mechanism can just clean the dust on the objective lens without manual cleaning, thereby improving the surveying and mapping efficiency on the construction project cost site. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of an embodiment of the present invention; Figure 2 It is a front view of the total station body and the cleaning mechanism in an embodiment of the present invention; Figure 3 It is a side view of the total station body and the cleaning mechanism in an embodiment of the present invention; Figure 4 It is a schematic structural diagram of the air suction and exhaust mechanism when it does not suck air in an embodiment of the present invention; Figure 5 is Figure 4 an enlarged structural diagram of part A in; Figure 6 It is a schematic structural diagram of the air suction and exhaust mechanism when it sucks air in an embodiment of the present invention; Figure 7 is Figure 6 an enlarged structural diagram of part B in.

[0017] Explanation of reference numerals: Support frame; 11, First support rod; 12, Second support rod; 13, Locking member; 14, Mounting seat; 2, Total station body; 21, Outer shell assembly; 211, Bottom shell; 212, Side shell; 22, Observation assembly; 221, Eyepiece; 222, Objective lens; 3, Cleaning mechanism; 31, Box body; 32, Tray; 321, Air hole; 33, Air suction and exhaust mechanism; 331, Air storage box; 332, Piston; 333, Push rod; 334, Spring; 335, Pressure plate; 336, Air pipe; 34, Lifting assembly; 341, Lead screw; 342, Lifting plate; 343, Support rod; 345, Worm gear; 346, Worm; 35, Dust sticking sticker. Detailed implementation manners

[0018] To make the above objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific embodiments of the present invention will be given with reference to the accompanying drawings.

[0019] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0020] In the description of this specification, the descriptions referring to terms such as "embodiment", "one embodiment", "some embodiments", "exemplarily", and "one embodiment" mean that the specific features, structures, materials, or characteristics described in connection with that embodiment or embodiment are included in at least one embodiment or embodiment of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or embodiment. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or embodiments.

[0021] The terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature.

[0022] In the drawings, the Z-axis represents the vertical direction, that is, the up and down position, and the positive direction of the Z-axis represents up, and the negative direction of the Z-axis represents down; the X-axis in the drawings represents the horizontal direction and is specified as the left and right position, and the positive direction of the X-axis represents the right side, and the negative direction of the X-axis represents the left side; the Y-axis in the drawings represents the front and back position, and the positive direction of the Y-axis represents the front side, and the negative direction of the Y-axis represents the back side. At the same time, it should be noted that the above-mentioned meanings of the Z-axis, Y-axis, and X-axis are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0023] An embodiment of the present invention provides a on-site surveying and mapping device for construction project cost, including a support frame 1, a total station body 2, and a cleaning mechanism 3. The total station body 2 is connected to the support frame 1. The total station body 2 includes a housing assembly 21 and an observation assembly 22. The housing assembly 21 includes a bottom shell 211 and side shells 212 on both sides of the bottom shell 211. The observation assembly 22 is rotatably provided between the two side shells 212. The observation assembly 22 includes an eyepiece 221 and an objective lens 222. The cleaning mechanism 3 is provided on the bottom shell 211. When the observation assembly 22 rotates to the vertical state, the cleaning mechanism 3 is used to clean the objective lens 222.

[0024] It should be noted that as Figure 1 shown in Figure 2 , the observation assembly 22 is in the horizontal state, that is, arranged along the Y-axis direction. As Figure 3 shown in

[0025] In this optional embodiment, when performing surveying and mapping at the construction project cost site, when dust is observed on the objective lens 222 through the eyepiece 221, the observation assembly 22 is rotated to the vertical state, and the objective lens 222 is vertically downward facing the bottom shell 211. Since the cleaning mechanism 3 is provided on the bottom shell 211, the cleaning mechanism 3 can exactly clean the dust on the objective lens 222 without manual cleaning, thereby improving the surveying and mapping efficiency at the construction project cost site.

[0026] Optionally, in combination with Figure 2 and Figure 3 As shown, the cleaning mechanism 3 includes a box body 31, a supporting plate 32, a lifting assembly 34 and a dust sticking sticker 35. The box body 31 is connected to the bottom shell 211. The top of the box body 31 is an open structure. The supporting plate 32 is slidably arranged on the upper part of the inner wall of the box body 31. The dust sticking sticker 35 is arranged on the upper surface of the supporting plate 32. The lifting assembly 34 is arranged on the lower part of the inner wall of the box body 31. The lifting assembly 34 is used to drive the supporting plate 32 to move vertically so that the dust sticking sticker 35 abuts against the objective lens 222.

[0027] In this optional embodiment, the box body 31, the supporting plate 32 and the dust sticking sticker 35 can all be set as circular structures. By driving the supporting plate 32 to move upward through the lifting assembly 34, the adhesive surface of the dust sticking sticker 35 on the supporting plate 32 abuts against and adheres to the objective lens 222, and the dust on the objective lens 222 is adhered down.

[0028] Optionally, the cleaning mechanism 3 further includes an air suction and exhaust mechanism 33. The air suction and exhaust mechanism 33 is used to provide an adsorption force and a release force for the dust sticking sticker 35.

[0029] In this optional embodiment, in combination with Figure 2 and Figure 3 As shown, when the air suction and exhaust mechanism 33 provides an adsorption force for the dust sticking sticker 35, the dust sticking sticker 35 can be firmly adsorbed on the upper surface of the supporting plate 32, so as to facilitate the dust sticking sticker 35 to adhere the dust on the objective lens 222. When the air suction and exhaust mechanism 33 provides a release force for the dust sticking sticker 35, it is convenient to remove the dust sticking sticker 35 from the upper surface of the supporting plate 32 for convenient replacement.

[0030] Optionally, in combination with Figure 2 and Figure 4 [[ID=z8]]As shown, the lifting assembly 34 includes a lead screw 341, a lifting plate 342, a support rod 343, a worm gear 345 and a worm 346. One end of the lead screw 341 is rotatably connected to the inner bottom surface of the box body 31, and the other end of the lead screw 341 extends vertically upward. The worm gear 345 is sleeved on the lead screw 341. The worm 346 is meshed with the worm gear 345. The lifting plate 342 is threadedly connected to the lead screw 341. The lifting plate 342 is slidably connected to the inner wall of the box body 31. One end of the support rod 343 is connected to the lifting plate 342, and the other end of the support rod 343 is connected to the supporting plate 32.

[0031] Specifically, in combination with Figure 4 , Figure 5 , Figure 6 and Figure 7 as shown, one end of the lead screw 341 can be rotatably connected to the middle of the inner bottom surface of the box body 31 through a bearing. A threaded hole can be provided in the middle of the lifting plate 342, and the threaded hole is threadedly connected to the lead screw 341. The lifting plate 342 can be set as a circular structure. By arranging a chute vertically along the inner wall of the box body 31 and arranging a slider along the periphery of the lifting plate 342, the slider is slidably connected to the chute, which plays a role in limiting and guiding the lifting plate 342. To maintain the stability of the support plate 32 when it is supported, three support rods 343 can be evenly arranged.

[0032] In this alternative embodiment, as Figure 4 shown, the support plate 32 is stored in the upper inner part of the box body 31. At this time, it will not prevent the objective lens 222 from rotating to the vertical state. In other words, there will be no problem of movement interference when the objective lens 222 rotates to the vertical state. As Figure 6 shown, by rotating the worm 346, the worm 346 drives the worm wheel 345 to rotate, thereby driving the lead screw 341 to rotate, so that the lifting plate 342 moves vertically upward, and the support rods 343 support the support plate 32 to move upward together until the adhesion surface of the dust sticking patch 35 in the support plate 32 contacts the objective lens 222.

[0033] Furthermore, the air suction and exhaust mechanism 33 includes an air pipe 336. A plurality of air holes 321 are provided on the support plate 32, and each air hole 321 is connected to an air pipe 336. The air pipe 336 is used for suction or exhaust.

[0034] In this alternative embodiment, in combination with Figure 4 , Figure 5 , Figure 6 and Figure 7 as shown, since both the box body 31 and the support plate 32 are set as circular structures, and the dust sticking patch 35 is also circular, then a plurality of air holes 321 can be evenly arranged on the support plate 32, and the plurality of air holes 321 are within a circular range, so that the non-adhesion surface of the circular dust sticking patch 35 can be laid flat and covered on the air holes 321 within the circular range. When the air pipe 336 sucks air, the air pipe 336 forms a negative pressure, so as to adsorb the non-adhesion surface of the dust sticking patch 35. When the air pipe 336 exhausts air, the negative pressure in the air pipe 336 gradually disappears, so as to release the non-adhesion surface of the dust sticking patch 35.

[0035] Further, the air intake and exhaust mechanism 33 further includes a gas storage box 331, a piston 332, a push rod 333, a spring 334 and a pressing plate 335. The gas storage box 331 is arranged in the box body 31 and located between the lifting plate 342 and the supporting plate 32. The gas storage box 331 can be fixed in the box body 31 through a connecting rod. The piston 332 is slidably connected to the inner wall of the gas storage box 331. One end of the push rod 333 is connected to the piston 332, and the other end of the push rod 333 passes through the bottom surface of the gas storage box 331 and is connected to the pressing plate 335. The spring 334 is sleeved on the push rod 333, and both ends of the spring 334 respectively abut against the bottom surface of the gas storage box 331 and the upper surface of the pressing plate 335. One end of the air pipe 336 is connected to the bottom end of the air hole 321, and the other end of the air pipe 336 communicates with the lower part of the inner cavity of the gas storage box 331.

[0036] In this alternative embodiment, in combination with Figure 4 、 Figure 5 、 Figure 6 and Figure 7 shown, as Figure 4 and Figure 5 shown, at this time, the objective lens 222 rotates to the vertical state. The lifting plate 342 is located below the pressing plate 335 and does not contact the pressing plate 335. The spring 334 is in the natural state. The piston 332 is roughly located in the middle of the gas storage box 331. The non-adhesive surface of the dust sticking sticker 35 is laid flat on the upper surface of the supporting plate 32 and covers a plurality of air holes 321. As Figure 6 and Figure 7 shown, when the lifting plate 342 moves vertically upward, the supporting plate 32 moves vertically upward synchronously until the lifting plate 342 abuts against the lower surface of the pressing plate 335, thereby pushing the pressing plate 335 upward and causing the piston 332 to move upward. At this time, the air in the air pipe 336 is gradually sucked into the lower part of the inner cavity of the gas storage box 331, and the air pipe 336 forms a negative pressure to gradually adsorb the non-adhesive surface of the dust sticking sticker 35 through a plurality of air holes 321. As Figure 6 and Figure 7As shown, as the lifting plate 342 rises to the maximum height, the supporting plate 32, the piston 332 and the pressing plate 335 are all at the maximum height. At this time, the adhesion of the dust sticker 35 contacts the objective lens 222, the negative pressure degree in the air pipe 336 is the largest, the air holes 321 adsorb the non-adhesive surface of the dust sticker 35 most tightly. After staying for a few seconds, the adhesive surface of the dust sticker 35 is fully contacted with the objective lens 222. Then the lifting plate 342 moves downward. At this time, the spring 334 gradually returns to its original state, pushing the pressing plate 335 to drive the piston 332 to start moving downward. Although some gas will enter the air pipe 336, the air pipe 336 is still in a negative pressure state and adsorbs the non-adhesive surface of the dust sticker 35 through the air holes 321. And the adsorption force of the air holes 321 on the non-adhesive surface of the dust sticker 35 is greater than the adhesion force of the adhesive surface of the dust sticker 35 on the objective lens 222. In other words, the adhesive surface of the dust sticker 35 can be peeled off from the objective lens 222, so that the flying dust adheres to the adhesive surface of the dust sticker 35. As the lifting plate 342 continues to descend, the piston 332 continues to descend and exhausts air into the air pipe 336, thereby releasing the non-adhesive surface of the dust sticker 35 through the air holes 321.

[0037] Specifically, as Figure 1 shown, during surveying and mapping, the surveyor stands on one side in the negative direction of the Y-axis, the eyepiece 221 is also located on the side in the negative direction of the Y-axis, and the objective lens 222 is located on the side in the positive direction of the Y-axis. Since there is sometimes dust in the construction project cost site, when it is observed that there is flying dust on the objective lens 222, there is no need for manual wiping, thus greatly improving the surveying and mapping efficiency. And the dust sticker 35 can be used multiple times. When there is more flying dust adhered to the dust sticker 35, it is replaced.

[0038] It should be noted that since the flying dust adheres to the objective lens 222 at the construction project cost site, the contact force between the flying dust and the objective lens 222 is very small. Therefore, selecting a dust sticker 35 with a smaller adhesion force on the adhesive surface can achieve the effect of adhering the flying dust on the objective lens 222, so that the adhesive surface of the dust sticker 35 can be peeled off from the objective lens 222 under the adsorption of the air holes 321. The top surface of the air storage box 331 is provided with a plurality of channels. When the piston 332 moves upward, the gas in the upper inner cavity of the air storage box 331 is discharged from the channels. When the air storage box 331 moves downward, external gas enters the air storage box 331 from the channels.

[0039] Further, one end of the worm 346 far away from the worm gear 345 passes through the side shell 212 and is connected with a knob.

[0040] In this optional embodiment, in combination with Figure 2 shown, one end of the worm 346 is meshed and connected with the worm gear 345. The other end of the worm 346 can pass through the side shell 212 on the right side and install a knob, so that the worm 346 can be rotated through the knob, and then the worm gear 345 drives the lead screw 341 to rotate synchronously.

[0041] Furthermore, a rubber layer is provided on the upper surface of the pallet 32.

[0042] In this alternative embodiment, as Figure 6 shown, the rubber layer can be fixed to the upper surface of the pallet 32 by bonding. By laying the dust sticker 35 flat on the upper surface of the pallet 32, when the pallet 32 rises and the adhesive surface of the dust sticker 35 contacts the objective lens 222, the rubber layer can not only provide a buffering effect, avoiding rigid contact between the pallet 32 and the objective lens 222 and causing damage to the objective lens 222, but also when the rubber layer is subjected to a certain amount of extrusion, it can make the adhesive surface of the dust sticker 35 fit more closely to the objective lens 222, thereby improving the adhesion effect of the adhesive surface of the dust sticker 35 on the flying dust on the objective lens 222.

[0043] Optionally, the support frame 1 includes support legs and a mounting base 14. There are three support legs circumferentially arranged along the mounting base 14, and the mounting base 14 is used for mounting the total station body 2.

[0044] In this alternative embodiment, in combination with Figure 1 shown, the number of support legs is three and they are evenly arranged along the circumference of the mounting base 14, so that the mounting base 14 can be stably lifted. The mounting base 14 has an interface matching the bottom interface of the total station body 2, so that the total station body 2 can be fixed to the mounting base 14 using screws or other fasteners.

[0045] Furthermore, the support leg includes a first rod 11, a second rod 12 and a locking member 13. One end of the first rod 11 is rotatably connected to the mounting base 14, the other end of the first rod 11 is slidably connected to the second rod 12, the second rod 12 is used to slide along the extension direction of the first rod 11, and the locking member 13 is connected to the first rod 11 and is used to limit the second rod 12.

[0046] In this alternative embodiment, in combination with Figure 1 shown, one end of the first rod 11 can be rotatably connected to the mounting base 14 through a rotating shaft or a similar mechanism, enabling the first rod 11 to be adjusted by a certain angle in the horizontal plane to adapt to different terrains and surveying requirements; the second rod 12 is slidably connected to the first rod 11. The specific implementation method can be, for example, that there is a chute or a guide rail inside the second rod 12, and there are corresponding protrusions or sliding rails on the first rod 11 to cooperate with it. In this way, the surveyor can manually adjust the position of the second rod 12 on the first rod 11 according to needs, thereby changing the overall length of the support leg; the locking member 13 can be a structure such as a knob, a bolt or a buckle, installed on the first rod 11, and is used to firmly lock the second rod 12 in the required position after adjusting its position, preventing sliding or loosening during use and ensuring the stability and safety of the support leg.

[0047] Although the present invention is disclosed as above, the scope of protection of the present invention is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will all fall within the scope of protection of the present invention.

Claims

1. A on-site surveying and mapping device for construction project cost, characterized in that, It includes a support frame (1), a total station body (2) and a cleaning mechanism (3). The total station body (2) is connected to the support frame (1). The total station body (2) includes a housing assembly (21) and an observation assembly (22). The housing assembly (21) includes a bottom shell (211) and side shells (212) on both sides of the bottom shell (211). The observation assembly (22) is rotatably arranged between the two side shells (212). The observation assembly (22) includes an eyepiece (221) and an objective lens (222). The cleaning mechanism (3) is arranged on the bottom shell (211). When the observation assembly (22) rotates to the vertical state, the cleaning mechanism (3) is used to clean the objective lens (222).

2. The on-site surveying and mapping equipment for construction project cost according to claim 1, characterized in that, The cleaning mechanism (3) includes a box body (31), a support plate (32), a lifting assembly (34) and a dust sticking sticker (35). The box body (31) is connected to the bottom shell (211). The top of the box body (31) is of an open structure. The support plate (32) is slidably arranged on the upper part of the inner wall of the box body (31). The dust sticking sticker (35) is arranged on the upper surface of the support plate (32). The lifting assembly (34) is arranged on the lower part of the inner wall of the box body (31). The lifting assembly (34) is used to drive the support plate (32) to move vertically so that the dust sticking sticker (35) abuts against the objective lens (222).

3. The on-site surveying and mapping equipment for construction project cost according to claim 2, characterized in that, The cleaning mechanism (3) further includes an air suction and exhaust mechanism (33). The air suction and exhaust mechanism (33) is used to provide an adsorption force and a release force for the dust sticking sticker (35).

4. The on-site surveying and mapping equipment for construction project cost according to claim 3, characterized in that, The lifting assembly (34) includes a lead screw (341), a lifting plate (342), a support rod (343), a worm gear (345) and a worm (346). One end of the lead screw (341) is rotatably connected to the inner bottom surface of the box body (31). The other end of the lead screw (341) extends vertically upward. The worm gear (345) is sleeved on the lead screw (341). The worm (346) is meshed and connected with the worm gear (345). The lifting plate (342) is threadedly connected to the lead screw (341). The lifting plate (342) is slidably connected to the inner wall of the box body (31). One end of the support rod (343) is connected to the lifting plate (342). The other end of the support rod (343) is connected to the support plate (32).

5. The on-site surveying and mapping equipment for construction project cost according to claim 4, characterized in that, The air suction and exhaust mechanism (33) includes an air pipe (336). A plurality of air holes (321) are arranged on the support plate (32). Each air hole (321) is connected to an air pipe (336). The air pipe (336) is used for air suction or exhaust.

6. The on-site surveying and mapping equipment for construction project cost according to claim 5, characterized in that, The air intake and exhaust mechanism (33) further includes an air storage box (331), a piston (332), a push rod (333), a spring (334) and a pressing plate (335). The air storage box (331) is arranged in the box body (31) and located between the lifting plate (342) and the supporting plate (32). The piston (332) is slidably connected to the inner wall of the air storage box (331). One end of the push rod (333) is connected to the piston (332), and the other end of the push rod (333) passes through the bottom surface of the air storage box (331) and is connected to the pressing plate (335). The spring (334) is sleeved on the push rod (333), and both ends of the spring (334) respectively abut against the bottom surface of the air storage box (331) and the upper surface of the pressing plate (335). One end of the air pipe (336) is connected to the bottom end of the air hole (321), and the other end of the air pipe (336) is communicated with the lower part of the inner cavity of the air storage box (331).

7. The on-site surveying and mapping equipment for construction project cost according to claim 4, wherein One end of the worm (346) far away from the worm wheel (345) passes through the side shell (212) and is connected with a knob.

8. The on-site surveying and mapping equipment for construction project cost according to claim 2, wherein The upper surface of the supporting plate (32) is provided with a rubber layer.

9. The on-site surveying and mapping equipment for construction project cost according to claim 1, characterized in that, The support frame (1) includes support legs and a mounting seat (14). Three support legs are circumferentially arranged along the mounting seat (14), and the mounting seat (14) is used for mounting the total station body (2).

10. The on-site surveying and mapping equipment for construction project cost according to claim 9, characterized in that The support leg includes a first support rod (11), a second support rod (12) and a locking member (13). One end of the first support rod (11) is rotatably connected to the mounting seat (14), the other end of the first support rod (11) is slidably connected to the second support rod (12), the second support rod (12) is used for sliding along the extending direction of the first support rod (11), the locking member (13) is connected to the first support rod (11), and the locking member (13) is used for limiting the second support rod (12).

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