A surveying and mapping device for construction site investigation and its usage method

Abstract

This invention discloses a surveying device and its method for use in construction site investigation. The device includes a vehicle body with two sets of symmetrical shock absorbers on its front and rear sides. A connecting rod is slidably connected to the bottom of each shock absorber, and both ends of the connecting rod are rotatably connected to a shaft. One end of each shaft is rotatably connected to a wheel leg rotatably connected to the outer wall of the vehicle body. The outer wall of each wheel leg is equipped with a height-adjustable wheel frame, and a pressure sensor is mounted on the top of the wheel frame. The vehicle body can be moved remotely, facilitating user movement and saving manpower. The shock absorbers reduce vibration damage to the measuring instrument during movement. When the vehicle body is stationary, due to terrain variations, the four wheel legs are at different heights, causing the top plate to be uneven. The pressure sensor detects the pressure on the wheel legs, thus determining the levelness of the top plate.

Description

Technical Field

[0001] This invention belongs to the field of architectural engineering technology, specifically relating to a surveying and mapping device for architectural engineering site investigation and its usage method. Background Technology

[0002] On-site surveying for construction cost estimation requires the use of a surveying instrument to measure the horizontal and vertical angles on site. During measurement, the surveying instrument is set up on a tripod. The surveying instrument is an automated, high-precision optical instrument that integrates optics, mechanics, electronics, and computing. Based on the electronic and intelligent optical theodolite, it adopts electronic subdivision, control processing technology, and filtering technology to achieve intelligent measurement readings. It can be widely used in third- and fourth-order triangulation control surveying in national and urban areas, for engineering surveying in railways, highways, bridges, water conservancy, and mining, and can also be used for the installation of buildings and large equipment. It is applied to cadastral surveying, topographic surveying, and various engineering surveys.

[0003] The surveying equipment for site investigation in construction engineering described in patent CN116480911A uses the relative movement of two clamping blocks to fix the surveying instrument. At the same time, a rotating mechanism is added to the bottom of the clamping mechanism to facilitate the adjustment of the angle of the surveying instrument during surveying, which improves the stability of surveying while maintaining the flexibility of surveying and brings convenience to the user. However, its movement still requires traditional manual handling, and the height of the three supporting legs also needs to be manually adjusted, so it is relatively troublesome to use. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a surveying equipment and method for site investigation in construction engineering, which has the advantages of easy automatic leveling and saving manpower.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a surveying and mapping device for construction site investigation, comprising a vehicle body, characterized in that: two sets of symmetrical shock absorbers are arranged on the front and rear sides of the vehicle body, a connecting rod is slidably connected to the bottom of the shock absorber, a connecting shaft is rotatably connected to both ends of the connecting rod, a wheel leg is rotatably connected to one end of the connecting shaft and rotatably connected to the outer wall of the vehicle body, a height-adjustable wheel frame is arranged on the outer wall of the wheel leg, and a pressure sensor is arranged on the top of the wheel frame; when the vehicle body is stopped, three of the four wheel legs are in contact with the ground, the pressure sensor detects the pressure on each wheel leg, and according to the detection results, the height of the wheel frame of the wheel leg with the highest and lowest pressure is changed, so that these two wheel legs tilt towards the value of the other wheel leg, thereby achieving automatic leveling; The vehicle body is equipped with a top box on its top, and a cylinder is installed inside the top box. A top plate is fixedly connected to the top of the cylinder. A placement rack is installed on the top of the top plate. A detachable measuring instrument is installed on the top of the placement rack. Flip-tops are installed on both sides of the top box.

[0006] Through the above technical solution, the vehicle can be moved remotely, making it convenient for users and saving manpower. Shock absorbers reduce vibrations during movement, minimizing damage to the measuring instrument. When the vehicle stops, due to terrain variations, the four wheel legs are at different heights, causing the top plate to be uneven. Pressure sensors detect the pressure on the wheel legs, thus determining the top plate's level. Three of the four wheel legs will be in contact with the ground. Based on pressure detection, the wheel frames of the wheel with the highest and lowest pressure will change height, causing these two wheel legs to tilt towards the other wheel leg, achieving automatic leveling. The top box protects the measuring instrument during movement, and cylinders can raise and lower the measuring instrument, making it easier for users to operate.

[0007] Preferably, the vehicle body includes a base block, drawers are slidably connected to both sides of the inner wall of the base block, a top plate is fixedly connected to the top outer wall of the base block, and connecting lugs for connecting wheel legs are fixedly connected to both sides of the base block.

[0008] With the above technical solution, when the vehicle is moving, objects or tools can be stored in the drawers, thereby saving manpower. At the same time, the top plate can provide space for the equipment on the top, and the connecting legs can be used to rotate and connect the wheel legs. When the wheel legs rotate slightly, the shock absorbers can absorb the shock.

[0009] Preferably, the connecting rod includes a rod body, the inner wall of which has two sliding grooves, the inner wall of which is slidably connected to the outer wall of the shock absorber, and the two ends of the rod body are provided with connectors for rotating the connecting shaft.

[0010] With the above technical solution, the rod body can be connected to the connecting shaft through the connectors at both ends, and then the connecting shaft is linked with the wheel legs on both sides. When the wheel legs rotate, they will drive the connecting rod to move, thereby allowing the shock absorber to absorb vibration through the connecting rod.

[0011] Preferably, the wheel leg includes a leg rod, a rotating head is fixedly connected to the top of the leg rod, a transmission head is fixedly connected to one side of the outer wall of the leg rod, a screw driven by a motor is provided on the outer wall of the leg rod, a baffle is fixedly connected to one side of the screw, and a sliding groove is provided through the inner wall of the baffle.

[0012] With the above technical solution, the wheel leg is rotatably connected to the connecting leg lug via a rotating head on the leg rod, and the screw is driven by a motor. The screw can control the lifting and lowering of the wheel frame, thereby adjusting the height of the wheel leg.

[0013] Preferably, the wheel frame includes a mounting plate, the outer wall of which is fixedly connected with a threaded block, the bottom of which is provided with a transmission column connected to a pressure sensor, and the bottom of which is provided with a wheel hub.

[0014] Through the above technical solution, the friction of the wheel hub can be reduced when the vehicle body moves, thus facilitating the movement of the vehicle body. The pressure on the wheel hub will be transmitted to the top pressure sensor through the transmission column, so that the vehicle body can be automatically leveled by measuring the pressure.

[0015] Preferably, the top box includes a box body, the top outer wall of the box body is fixedly connected to a connecting cover lug, and the inner wall of the box body is fixedly connected to a rotating shaft.

[0016] Through the above technical solution, the box body can provide a protective space for the measuring instrument. The flip cover can be connected through the connecting ear, so that the flip cover covers the top of the box body. The rotating shaft can achieve the effect of rotating and connecting the support rod.

[0017] Preferably, the top plate includes a plate body, the top of the plate body has a groove, the outer walls on both sides of the plate body have limit grooves, and the inner walls of the limit grooves are slidably connected to support rods.

[0018] With the above technical solution, the top plate serves as a support platform for the placement rack, and the support rods can slide through the limiting grooves, thus making the top plate more stable around its perimeter.

[0019] Preferably, the placement rack includes a placement platform, the bottom of which is fixedly connected to three balance legs, and the bottom of each balance leg is fixedly connected to a lifting rod.

[0020] The above technical solution allows the height of the three balance legs to be controlled by the lifting rod, thus enabling the level of the placement frame to be readjusted.

[0021] Preferably, a locator is fixedly connected to the bottom of the placement platform, and a screw head for connecting a measuring instrument is fixedly connected to the top outer wall of the placement platform.

[0022] The above technical solution uses a locator to automatically detect the level of the placement rack, and then, in conjunction with three lifting rods, it can automatically level itself.

[0023] A method for using a surveying equipment for construction site investigation includes the following steps: S1. The vehicle body can be moved remotely, making it convenient for users and saving manpower. Shock absorbers reduce vibrations during movement, minimizing damage to the measuring instrument. When the vehicle stops, due to terrain variations, the four wheel legs are at different heights, causing the top plate to be uneven. Pressure sensors detect the pressure on the wheel legs, thus determining the top plate's level. Three of the four wheel legs will be in contact with the ground. Based on pressure detection, the wheel frames of the wheel with the highest and lowest pressure will change height, causing these two wheel legs to tilt towards the other wheel leg, achieving automatic leveling. The top box protects the measuring instrument during movement, and a cylinder can raise and lower the measuring instrument, making it easier for users to operate.

[0024] S2. When the vehicle is moving, objects or tools can be stored in the drawers, thus saving manpower. At the same time, the top plate can provide space for the equipment on the top, and the connecting legs can be used to rotate and connect the wheel legs. When the wheel legs rotate slightly, the shock absorbers can absorb the shock.

[0025] S3. The rod body can be connected to the connecting shaft through the connectors at both ends. Then the connecting shaft is linked with the wheel legs on both sides. When the wheel legs rotate, they will drive the connecting rod to move, thereby allowing the shock absorber to absorb shock through the connecting rod.

[0026] S4. The wheel leg is rotatably connected to the connecting leg lug via a rotating head on the leg rod, and the screw is driven by a motor. The screw can control the lifting and lowering of the wheel frame, thereby adjusting the height of the wheel leg.

[0027] S5. When the vehicle body moves, the wheel hub can reduce friction, thus facilitating the movement of the vehicle body. The pressure on the wheel hub is transmitted to the top pressure sensor through the drive column, so that the vehicle body can be automatically leveled by measuring the pressure.

[0028] S6. The housing provides a protective space for the measuring instrument. The flip cover can be connected via the connecting lugs, allowing the flip cover to cover the top of the housing. The pivot can be used to rotate and connect the support rod.

[0029] S7. The top plate is a support platform for the placement rack. The support rod can slide through the limiting groove, which makes the top plate more stable around its perimeter.

[0030] S8. The height of the three balance legs can be controlled by the lifting rod, so the level of the placement rack can be adjusted again.

[0031] S9. The locator can automatically detect the level of the placement rack, and then, together with the three lifting rods, it can automatically level itself.

[0032] Compared with the prior art, the beneficial effects of the present invention are: 1. The vehicle can be moved remotely, making it convenient for users and saving manpower. Shock absorbers reduce vibrations during movement, minimizing damage to the measuring instrument. When the vehicle stops, due to terrain variations, the four wheel legs are at different heights, causing the top plate to be uneven. Pressure sensors detect the pressure on the wheel legs, thus determining the top plate's level. Three of the four wheel legs will be in contact with the ground. Based on pressure detection, the wheel frames of the wheel with the highest and lowest pressure will change height, causing these two wheel legs to tilt towards the other wheel leg, achieving automatic leveling. The top box protects the measuring instrument during movement, and a cylinder can raise and lower the measuring instrument, making it easier for users to operate.

[0033] 2. When the vehicle is moving, objects or tools can be stored in the drawers, thus saving manpower. At the same time, the top plate can provide space for the equipment on the top, and the connecting legs can be used to rotate and connect the wheel legs. When the wheel legs rotate slightly, the shock absorbers can absorb the shock.

[0034] 3. The rod body can be connected to the connecting shaft through the connectors at both ends. The connecting shaft is then linked with the wheel legs on both sides. When the wheel legs rotate, they will drive the connecting rod to move, thereby causing the shock absorber to absorb shock through the connecting rod. The height of the three balance legs can be controlled by the lifting rod, so the level of the placement rack can be adjusted again. The positioner can automatically detect the level of the placement rack, and together with the three lifting rods, it can achieve an automatic leveling effect. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram of the vehicle body structure of the present invention; Figure 3 This is a schematic diagram of the linkage structure of the present invention; Figure 4 This is a schematic diagram of the top plate structure of the present invention; Figure 5 This is a schematic diagram of the wheel leg structure of the present invention; Figure 6 This is a schematic diagram of the wheel frame structure of the present invention.

[0036] In the diagram: 1. Vehicle body; 2. Shock absorber; 3. Linkage rod; 4. Coupling shaft; 5. Wheel leg; 6. Wheel frame; 7. Pressure sensor; 8. Top box; 9. Cylinder; 10. Top plate; 11. Storage rack; 12. Measuring instrument; 13. Flip cover; 100. Base block; 101. Drawer; 102. Top plate; 103. Connecting leg lug; 300. Rod; 301. Sliding groove; 302. Connector; 500. Leg rod; 501. Rotating head; 502. Transmission head; 503, screw; 504, slide groove; 600, mounting plate; 601, threaded block; 602, transmission column; 603, hub; 800, housing; 801, connecting cover lug; 802, rotating shaft; 1000, plate; 1001, groove; 1002, limiting groove; 1003, support rod; 1100, placement platform; 1101, balance leg; 1102, lifting rod; 1103, positioner; 1104, screw head. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Example 1: Please see Figures 1-6 This invention provides a technical solution: a surveying and mapping device for construction site investigation, comprising a vehicle body 1, two sets of symmetrical shock absorbers 2 are arranged on the front and rear sides of the vehicle body 1, a connecting rod 3 is slidably connected to the bottom of the shock absorber 2, and a connecting shaft 4 is rotatably connected to both ends of the connecting rod 3. One end of the connecting shaft 4 is rotatably connected to a wheel leg 5 rotatably connected to the outer wall of the vehicle body 1. A height-adjustable wheel frame 6 is arranged on the outer wall of the wheel leg 5, and a pressure sensor 7 is arranged on the top of the wheel frame 6. When the vehicle body 1 is stopped, three of the four wheel legs 5 are in contact with the ground. The pressure sensor 7 detects the pressure on each wheel leg 5, and according to the detection results, changes the height of the wheel frame 6 of the wheel leg 5 with the highest and lowest pressure, so that the two wheel legs 5 tilt towards the value of the other wheel leg 5, thereby achieving automatic leveling. A top box 8 is provided on the top of the vehicle body 1. A cylinder 9 is provided inside the top box 8. A top plate 10 is fixedly connected to the top of the cylinder 9. A placement rack 11 is provided on the top of the top plate 10. A detachable measuring instrument 12 is provided on the top of the placement rack 11. Flip covers 13 are provided on both sides of the top box 8.

[0039] In this embodiment, the vehicle body 1 can be moved remotely, which facilitates user movement and saves manpower. Simultaneously, the shock absorber 2 reduces vibration during vehicle body 1 movement, minimizing damage to the measuring instrument 12. When the vehicle body 1 stops, due to the terrain, the four wheel legs 5 are at different heights, causing the top plate 10 to be uneven. The pressure sensor 7 detects the pressure on the wheel legs 5, thus determining the level of the top plate 10. Three of the four wheel legs 5 will be in contact with the ground. Based on the pressure detection, the wheel frame 6 of the wheel leg 5 with the highest and lowest pressure will change height, causing these two wheel legs 5 to tilt towards the other wheel leg 5, achieving automatic leveling. The top box 8 protects the measuring instrument 12 during movement, and the cylinder 9 can raise and lower the measuring instrument 12, making it easier for the user to operate.

[0040] Example 2: Please see Figures 2-5 Based on Embodiment 1, the present invention provides a technical solution for a surveying equipment for construction site investigation: The vehicle body 1 includes a base block 100, drawers 101 are slidably connected to both sides of the inner wall of the base block 100, a top plate 102 is fixedly connected to the top outer wall of the base block 100, and connecting legs 103 for connecting wheel legs 5 are fixedly connected to both sides of the base block 100. The connecting rod 3 includes a rod body 300, two sliding grooves 301 are opened on the inner wall of the rod body 300, the inner wall of the sliding grooves 301 is slidably connected to the outer wall of the shock absorber 2, and connecting heads 302 for rotatably connecting the connecting shaft 4 are provided at both ends of the rod body 300. The wheel leg 5 includes a leg rod 500, a rotating head 501 is fixedly connected to the top of the leg rod 500, a transmission head 502 is fixedly connected to one side of the outer wall of the leg rod 500, and a screw 503 driven by a motor is provided on the outer wall of the leg rod 500. A baffle is fixedly connected to one side of the screw 503, and a sliding groove 504 is opened through the inner wall of the baffle.

[0041] In this embodiment, when the vehicle body 1 is moving, it can store objects or tools through the drawer 101, thereby saving manpower. At the same time, the top plate 102 can provide space for the equipment on the top, and the connecting leg lug 103 can rotate and connect the wheel legs 5. When the wheel legs 5 rotate slightly, the shock absorber 2 can absorb the shock. The rod 300 can be connected to the connecting shaft 4 through the connectors 302 at both ends. Then the connecting shaft 4 is linked with the wheel legs 5 on both sides. When the wheel legs 5 rotate, it will drive the connecting rod 3 to move, thereby allowing the shock absorber 2 to absorb the shock through the connecting rod 3. The wheel legs 5 are rotatably connected to the connecting leg lug 103 through the rotating head 501 on the leg rod 500. The screw 503 is driven by a motor, and the wheel frame 6 can be raised and lowered through the screw 503, thereby adjusting the height of the wheel legs 5.

[0042] Example 3: Please see Figures 4-6 Based on Embodiments 1 and 2, the present invention provides a technical solution for a surveying equipment for construction site investigation: the wheel frame 6 includes a mounting plate 600, a threaded block 601 is fixedly connected to the outer wall of the mounting plate 600, a transmission column 602 connected to a pressure sensor 7 is provided at the bottom of the mounting plate 600, and a wheel hub 603 is provided at the bottom of the transmission column 602; the top box 8 includes a box body 800, a connecting cover ear 801 is fixedly connected to the top outer wall of the box body 800, and a rotating shaft 802 is fixedly connected to the inner wall of the box body 800; the top plate 10 includes a plate body 1000, a groove 1001 is provided at the top of the plate body 1000, and limiting grooves 1002 are provided on the outer walls of both sides of the plate body 1000, with a support rod 1003 slidably connected to the inner wall of the limiting groove 1002.

[0043] In this embodiment, the wheel hub 603 can reduce friction when the vehicle body 1 moves, thus facilitating the movement of the vehicle body 1. The pressure on the wheel hub 603 is transmitted to the top pressure sensor 7 through the transmission column 602, thereby assisting the vehicle body 1 in automatic leveling by measuring the pressure. The box body 800 provides a protective space for the measuring instrument 12. The flip cover 13 can be connected through the connecting ear 801, so that the flip cover 13 covers the top of the box body 800. The rotating shaft 802 can rotate and connect the support rod 1003. The top plate 10 is a support platform for the placement rack 11. The support rod 1003 can slide through the limiting groove 1002, thus making the top plate 10 more stable around its perimeter.

[0044] Example 4: Please see Figure 4 Based on Embodiments 1, 2, and 3, the present invention provides a technical solution for a surveying equipment for construction site investigation: the placement frame 11 includes a placement platform 1100, three balance legs 1101 are fixedly connected to the bottom of the placement platform 1100, a lifting rod 1102 is fixedly connected to the bottom of each balance leg 1101, a locator 1103 is fixedly connected to the bottom of the placement platform 1100, and a screw head 1104 for connecting a measuring instrument 12 is fixedly connected to the top outer wall of the placement platform 1100.

[0045] In this embodiment, the height of the three balance legs 1101 can be controlled by the lifting rod 1102, so the level of the placement rack 11 can be adjusted again. The locator 1103 can automatically detect the level of the placement rack 11, and then, together with the three lifting rods 1102, it can achieve the effect of automatic leveling.

[0046] A method for using a surveying equipment for construction site investigation includes the following steps: S1. The vehicle body 1 can be moved remotely, which facilitates user movement and saves manpower. At the same time, the shock absorber 2 can absorb vibration when the vehicle body 1 is moving, thereby reducing the damage to the measuring instrument 12 caused by vibration. When the vehicle body 1 is stopped, due to the terrain, the height of the four wheel legs 5 is different, so the top plate 10 is not level. The pressure sensor 7 can detect the pressure on the wheel legs 5, thereby detecting the level of the top plate 10. Three of the four wheel legs 5 will be in contact with the ground. According to the pressure detection, the wheel frame 6 of the wheel leg 5 with the highest and lowest pressure will change its height, thereby tilting these two wheel legs 5 towards the value of the other wheel leg 5, thereby achieving an automatic leveling effect. At the same time, the top box 8 can protect the measuring instrument 12 during movement, and the cylinder 9 can raise and lower the measuring instrument 12, making it easier for users to operate the measuring instrument 12.

[0047] S2. When the vehicle body 1 is moving, it can store objects or tools through the drawer 101, thereby saving manpower. At the same time, the top plate 102 can provide space for the equipment on the top, and the connecting leg ear 103 can rotate and connect the wheel leg 5. When the wheel leg 5 rotates slightly, it can be damped by the shock absorber 2.

[0048] S3. The rod body 300 can be connected to the connecting shaft 4 through the connectors 302 at both ends. Then the connecting shaft 4 is linked with the wheel legs 5 on both sides. When the wheel legs 5 rotate, they will drive the connecting rod 3 to move, thereby allowing the shock absorber 2 to perform shock absorption through the connecting rod 3.

[0049] S4. The wheel leg 5 is rotatably connected to the connecting leg lug 103 via the rotating head 501 on the leg rod 500, and the screw 503 is driven by a motor. The screw 503 can control the lifting and lowering of the wheel frame 6, thereby adjusting the height of the wheel leg 5.

[0050] S5. When the wheel hub 603 moves, it can reduce friction, thus facilitating the movement of the vehicle body 1. The pressure on the wheel hub 603 is transmitted to the top pressure sensor 7 through the transmission column 602, so that the vehicle body 1 can be automatically leveled by measuring the pressure.

[0051] S6. The box body 800 provides a protective space for the measuring instrument 12. The flip cover 13 can be connected through the cover lug 801 so that the flip cover 13 covers the top of the box body 800. The rotating shaft 802 can rotate and connect the support rod 1003.

[0052] S7. The top plate 10 is a support platform for the placement rack 11. The support rod 1003 can slide through the limiting groove 1002, so that the top plate 10 can be more stable around its perimeter through the support rod 1003.

[0053] S8. The height of the three balance legs 1101 can be controlled by the lifting rod 1102, so that the level of the placement rack 11 can be adjusted again.

[0054] S9. The positioner 1103 can automatically detect the level of the placement rack 11, and then, together with the three lifting rods 1102, it can automatically level itself.

[0055] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A surveying and mapping device for construction site investigation, comprising a vehicle body (1), characterized in that: Two sets of symmetrical shock absorbers (2) are provided on the front and rear sides of the vehicle body (1). The bottom of the shock absorber (2) is slidably connected to a connecting rod (3). Both ends of the connecting rod (3) are rotatably connected to a shaft (4). One end of the shaft (4) is rotatably connected to a wheel leg (5) that is rotatably connected to the outer wall of the vehicle body (1). The outer wall of the wheel leg (5) is provided with a liftable wheel frame (6). The top of the wheel frame (6) is provided with a pressure sensor (7). When the vehicle body (1) stops, three of the four wheel legs (5) are in contact with the ground. The pressure sensor (7) detects the pressure on each wheel leg (5). Based on the detection results, the height of the wheel frame (6) of the wheel leg (5) with the highest and lowest pressure is changed, so that the two wheel legs (5) are tilted towards the value of the other wheel leg (5), thereby achieving automatic leveling. The top of the vehicle body (1) is provided with a top box (8), the inside of the top box (8) is provided with a cylinder (9), the top of the cylinder (9) is fixedly connected with a top plate (10), the top of the top plate (10) is provided with a placement rack (11), the top of the placement rack (11) is provided with a detachable measuring instrument (12), and the top box (8) is provided with flip covers (13) on both sides.

2. The surveying equipment for site investigation in construction engineering according to claim 1, characterized in that: The vehicle body (1) includes a base block (100), drawers (101) are slidably connected to both sides of the inner wall of the base block (100), a top plate (102) is fixedly connected to the top outer wall of the base block (100), and connecting lugs (103) for connecting wheel legs (5) are fixedly connected to both sides of the base block (100).

3. The surveying equipment for site investigation in construction engineering according to claim 2, characterized in that: The connecting rod (3) includes a rod body (300), and two sliding grooves (301) are provided on the inner wall of the rod body (300). The inner wall of the sliding groove (301) is slidably connected to the outer wall of the shock absorber (2). Connecting heads (302) for rotating connecting shaft (4) are provided at both ends of the rod body (300).

4. The surveying equipment for site investigation in construction engineering according to claim 3, characterized in that: The wheel leg (5) includes a leg rod (500), a rotating head (501) is fixedly connected to the top of the leg rod (500), a transmission head (502) is fixedly connected to one side of the outer wall of the leg rod (500), a screw (503) driven by a motor is provided on the outer wall of the leg rod (500), a baffle is fixedly connected to one side of the screw (503), and a sliding groove (504) is provided through the inner wall of the baffle.

5. The surveying equipment for site investigation in construction engineering according to claim 4, characterized in that: The wheel frame (6) includes a mounting plate (600), the outer wall of which is fixedly connected with a threaded block (601), and the bottom of the mounting plate (600) is provided with a transmission column (602) connected to a pressure sensor (7), and the bottom of the transmission column (602) is provided with a wheel hub (603).

6. The surveying equipment for site investigation in construction engineering according to claim 5, characterized in that: The top box (8) includes a box body (800), with a connecting cover lug (801) fixedly connected to the top outer wall of the box body (800) and a rotating shaft (802) fixedly connected to the inner wall of the box body (800).

7. A surveying and mapping device for site investigation in construction engineering according to claim 6, characterized in that: The top plate (10) includes a plate body (1000), the top of the plate body (1000) is provided with a groove (1001), and the outer walls on both sides of the plate body (1000) are provided with limiting grooves (1002), and the inner wall of the limiting groove (1002) is slidably connected with a support rod (1003).

8. A surveying and mapping equipment for site investigation in construction engineering according to claim 7, characterized in that: The placement rack (11) includes a placement platform (1100), and three balance legs (1101) are fixedly connected to the bottom of the placement platform (1100). Each balance leg (1101) is fixedly connected to a lifting rod (1102) at its bottom.

9. A surveying and mapping equipment for site investigation in construction engineering according to claim 8, characterized in that: The bottom of the placement platform (1100) is fixedly connected to a locator (1103), and the top outer wall of the placement platform (1100) is fixedly connected to a screw head (1104) for connecting a measuring instrument (12).

10. The method of using a surveying equipment for site investigation in construction engineering according to claim 9, characterized in that: Includes the following steps: S1. The vehicle body (1) can be moved by remote control, which makes it convenient for users to move and saves manpower. At the same time, when the vehicle body (1) moves, it can be damped by shock absorber (2), which can reduce the damage to the measuring instrument (12) due to vibration. When the vehicle body (1) stops, due to the terrain, the height of the four wheel legs (5) is different, so the top plate (10) is not horizontal. The pressure sensor (7) can detect the pressure on the wheel legs (5) and thus detect the level of the top plate (10). Three of the four wheel legs (5) will be in contact with the ground. According to the pressure detection, the wheel frame (6) of the wheel leg (5) with the highest and lowest pressure will change the height, so that the two wheel legs (5) tilt towards the value of the other wheel leg (5), thus achieving the effect of automatic leveling. At the same time, the top box (8) can protect the measuring instrument (12) when moving. At the same time, the measuring instrument (12) can be raised and lowered by cylinder (9), so that users can operate the measuring instrument (12) more conveniently. S2. When the vehicle body (1) is moving, it can store objects or tools through the drawer (101), thereby saving manpower. At the same time, the top plate (102) can provide space for the equipment on the top, and the connecting leg ear (103) can achieve the effect of rotating and connecting the wheel leg (5). When the wheel leg (5) rotates slightly, it can be damped by the shock absorber (2). S3. The rod (300) can be connected to the connecting shaft (4) through the connectors (302) at both ends. Then the connecting shaft (4) is linked with the wheel legs (5) on both sides. When the wheel legs (5) rotate, they will drive the connecting rod (3) to move, thereby allowing the shock absorber (2) to perform shock absorption through the connecting rod (3). S4. The wheel leg (5) is rotatably connected to the connecting leg ear (103) through the rotating head (501) on the leg rod (500), and the screw (503) is driven by the motor. The wheel frame (6) can be raised and lowered through the screw (503), thereby adjusting the height of the wheel leg (5). S5. When the wheel hub (603) moves, it can reduce friction, which makes it easier for the vehicle body (1) to move. The pressure on the wheel hub (603) will be transmitted to the top pressure sensor (7) through the transmission column (602), so that the vehicle body (1) can be automatically leveled by measuring the pressure. S6. The box (800) provides a protective space for the measuring instrument (12). The flip cover (13) can be connected through the connecting ear (801), so that the flip cover (13) covers the top of the box (800). The rotating shaft (802) can achieve the effect of rotating the connecting support rod (1003). S7. The top plate (10) is a support platform for the placement rack (11). The support rod (1003) can slide through the limiting groove (1002), so that the top plate (10) can be more stable around the perimeter through the support rod (1003). S8. The height of the three balance legs (1101) can be controlled by the lifting rod (1102), so that the level of the placement rack (11) can be adjusted again; S9. The positioner (1103) can automatically detect the level of the placement rack (11), and then, with the help of three lifting rods (1102), it can automatically level itself.

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