Portable surveying and mapping device based on BIM technology

Abstract

The invention belongs to the related technical field of surveying and mapping instruments, and particularly relates to a portable surveying and mapping device based on the BIM technology, the portable surveying and mapping device comprises a base support, the upper end of the base support is fixedly connected with a transparent cover body, and a surveying and mapping instrument is arranged in the transparent cover body; the self-adaptive fixing mechanism comprises a liquid storage chamber formed in the base support, a piston plate is slidably connected to the interior of the liquid storage chamber in a sealed mode, an electric push rod used for driving the piston plate is fixedly connected to the upper inner wall of the liquid storage chamber, and a plurality of liquid conveying channels are formed in the inner wall of the peripheral side of the liquid storage chamber; the lower wall of the base support is rotationally connected with a plurality of rotating rollers. By arranging the self-adaptive fixing mechanism, under the action of the electrorheological fluid, the telescopic amount of the multiple telescopic rods can be flexibly adjusted according to the fluctuation state of the ground, the base support can be adjusted in a self-adaptive mode according to the ground condition, and the stability of the base support and the surveying instrument above the base support is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field related to surveying and mapping instruments, and in particular relates to a portable surveying and mapping device based on BIM technology. Background Art

[0002] Surveying and mapping equipment refers to equipment and tools used to acquire and record geographic spatial information, usually including measuring instruments, sensors, drones, etc. Its main function is to collect three-dimensional data of the ground or buildings to facilitate terrain analysis, architectural design, urban planning, etc.

[0003] In the process of using surveying and mapping devices, BIM technology is usually applied to integrate all the information required in the design, construction and operation process into a digital model, so that all parties involved can share and update data in real time. For example, the patent document with the authorization announcement number CN117848299B discloses a portable surveying and mapping processing device based on BIM technology, which includes a lower box body, an upper box body, a surveying and mapping instrument and a portable bracket. The surveying and mapping processing device can store the three supporting legs parallel to each other and horizontally on the lower side of the lower box body. It is portable and directly integrated with the lower box body. The volume occupied by the supporting legs after storage is small, which makes it easy to carry.

[0004] However, the above surveying and mapping processing device still has the following technical problems when used:

[0005] During surveying, it is usually necessary to use the surveying device in various working environments. Different working environments will cause different ground undulations. In existing surveying devices, the bracket used to support the surveying device cannot be adaptively adjusted according to the ground conditions, resulting in poor stability of the bracket fixed on the ground, which in turn causes the surveying device to be unstable during use, resulting in errors in the measurement data, affecting the accuracy of the measurement results, and having a direct impact on subsequent design, construction and other links. Summary of the invention

[0006] The purpose of the present invention is to address the problems raised in the above background technology and to provide a portable surveying and mapping device based on BIM technology that can adaptively adjust the base bracket according to ground conditions to increase the stability of the base bracket and the surveying instrument above it.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A portable surveying and mapping device based on BIM technology, comprising:

[0009] A base bracket, the upper end of which is fixedly connected to a transparent cover, and a surveying instrument is arranged inside the transparent cover;

[0010] The adaptive fixing mechanism comprises a liquid storage chamber opened inside the base support, the internal sealing and sliding connection of the liquid storage chamber is connected to a piston plate, the upper inner wall of the liquid storage chamber is fixedly connected to an electric push rod for driving the piston plate, a plurality of infusion channels are opened on the peripheral inner wall of the liquid storage chamber, a plurality of rotating rollers are rotatably connected to the lower wall of the base support, an infusion groove selectively connected to the infusion channel at the corresponding position is opened inside the rotating roller, a telescopic rod is fixedly connected to the rotating roller, the infusion groove is connected to the inside of the telescopic rod, an anchoring column fixed to the ground is arranged below the telescopic rod, a first liquid storage space is formed between the inside of the telescopic rod, the infusion groove, the infusion channel and the space below the piston plate in the liquid storage chamber, and the first liquid storage space is filled with electrorheological fluid.

[0011] Preferably, a conducting wire is provided inside the liquid storage chamber, and a power supply device connected in series with the conducting wire is provided inside the base bracket.

[0012] Preferably, a plurality of sealing arc blocks are fixedly connected to the lower wall of the base bracket, and each of the rotating rollers is sealingly and slidably connected to a sealing arc block at a corresponding position.

[0013] Preferably, an anchoring mechanism is provided between the telescopic rod and the anchor column, including a fixing seat fixedly connected to the lower end of the telescopic rod, the bottom end of the fixing seat is rotatably connected to a rotating seat, the bottom end of the rotating seat is provided with a hinged seat, the anchor column is hinged to the hinged seat, a sliding groove is provided on the bottom wall of the anchor column, the internal sealing sliding connection of the sliding groove is connected to a piston block, the bottom end of the piston block is fixedly connected to an anchoring cone head, hydraulic rods for driving the piston block are provided on the inner walls on both sides of the sliding groove, a plurality of pressure sensors are provided in a circular array on the bottom wall of the anchor column, a microcontroller is provided inside the anchor column, and the microcontroller controls the opening and closing of the hydraulic rod according to the electrical signal fed back by the pressure sensor.

[0014] Preferably, an anti-slip pad is fixedly connected to the peripheral side wall of the anchor column.

[0015] Preferably, both side walls of the transparent cover body are provided with an adaptive heat dissipation mechanism, including a ventilation duct penetrating the side wall of the transparent cover body, the end of the ventilation duct away from the transparent cover body is fixedly connected to a filter screen plate, both side walls of the ventilation duct are penetrated by baffles that are slidably connected, and both side outer walls of the ventilation duct are fixedly connected with temperature-controlled telescopic columns, the interior of the temperature-controlled telescopic columns is filled with a thermal expansion and contraction medium, and the telescopic end of the temperature-controlled telescopic column is fixedly connected to the baffle at the corresponding position.

[0016] Preferably, a cleaning mechanism driven by an anchoring mechanism is provided at the upper end of the base bracket, including an annular liquid storage cavity opened inside the base bracket, multiple positions above the piston block in the slide grooves are connected with infusion pipes, and multiple infusion pipes are connected with the annular liquid storage cavity, and the upper wall of the annular liquid storage cavity is provided with two control grooves, and a second liquid storage space is formed between the control grooves, the annular liquid storage cavity, the infusion pipes, and the space above the piston block in the slide grooves, and the second liquid storage space is filled with hydraulic oil, and the control grooves are sealed and slidably connected with a lifting block, and the upper end of the lifting block is fixedly connected with a fixing rod extending to the top of the base bracket, and the top of the fixing rod is fixedly connected with a support plate, and the upper end of the support plate is slidably connected with a cleaning plate in a horizontal direction, and the cleaning plate is used in conjunction with a filter screen plate at a corresponding position, and both ends of the cleaning plate are fixedly connected with connecting rods, and one end of each connecting rod away from the cleaning plate is fixedly connected with a guide wheel, and the upper end of the base bracket is provided with two triangular blocks, and the two guide wheels successively contact and roll with the triangular blocks at corresponding positions.

[0017] Preferably, the two triangular blocks on the same side are arranged in a mirror-image manner, and each of the triangular blocks is fixedly connected to the upper end of the base bracket through an L-shaped rod.

[0018] Compared with existing technologies, the advantages of this portable surveying and mapping device based on BIM technology are:

[0019] 1. The present invention is provided with an adaptive fixing mechanism. Before use, the piston plate is pushed downward in the liquid storage chamber by the electric push rod, and the electrorheological fluid in the liquid storage chamber is transported to the inside of a plurality of telescopic rods through the infusion channel and the infusion tank, so that the telescopic amount of the plurality of telescopic rods can be flexibly adjusted according to the undulating state of the ground. Then, the power supply device is powered on, the electric field strength around the wire is in a high state, the electrorheological fluid is changed from liquid to solid, the telescopic amount of the telescopic rod cannot be changed, so that the plurality of anchoring columns remain in a state of contact with the ground and cannot be changed, so that the base bracket can be adaptively adjusted according to the ground conditions, thereby increasing the stability of the base bracket and the surveying instrument above it, and improving the accuracy of the measurement results.

[0020] 2. The present invention sets an anchoring mechanism. When the bottom surface of the anchoring column is completely in contact with the ground, multiple pressure sensors on the bottom surface of the anchoring column are subjected to a certain pressure. At this time, the microcontroller controls the hydraulic rod to open and drill the anchoring cone head into the ground, thereby improving the fixing effect of the anchoring column and the ground and further increasing the stability of the base bracket and the surveying and mapping device.

[0021] 3. The present invention sets an adaptive heat dissipation mechanism. When in use, the size of the vent in the ventilation duct can be adaptively adjusted through the thermal expansion and contraction medium, so as to adaptively adjust the heat dissipation and thermal insulation effect of the surveying and mapping instrument according to the external working environment temperature. When the temperature is high, the air flow rate in the transparent cover is increased to improve the heat dissipation effect and avoid overheating and damage of the surveying and mapping device when used in a high temperature environment. When the temperature is low, the air flow rate in the transparent cover is reduced to improve the thermal insulation effect and avoid affecting the normal operation of electronic components when the surveying and mapping instrument is used in a low temperature environment, thereby preventing the surveying and mapping instrument from malfunctioning.

[0022] 4. The present invention is provided with a cleaning mechanism. Before each work, the anchor cone head and the piston block move in the slide groove, so that the hydraulic oil in the annular liquid storage chamber and the control groove can be transported to the slide groove through the infusion pipe, so that the liquid level of the hydraulic oil in the control groove is lowered, thereby driving the lifting block and the fixed rod to pull the support plate and the cleaning plate to move downward. At the same time, under the action of the guide wheel and the triangular block, the cleaning plate is horizontally displaced relative to the lifting plate, and the dust and impurities on the filter screen plate are swept to both sides to avoid dust and impurities being mixed between the cleaning plate and the filter screen plate. The filter screen plate is effectively cleaned to ensure the heat dissipation effect of the surveying instrument. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0024] Figure 2 It is a cross-sectional structural schematic diagram of the present invention;

[0025] Figure 3 yes Figure 2 The enlarged view of point A in the middle;

[0026] Figure 4 yes Figure 2 The enlarged view of point B in the middle;

[0027] Figure 5 It is a partial cross-sectional view of the ventilation duct in the present invention.

[0028] In the figure: 1. base bracket; 11. transparent cover; 12. surveying instrument; 2. adaptive fixing mechanism; 21. liquid storage chamber; 22. piston plate; 23. electric push rod; 24. infusion channel; 25. rotating roller; 26. infusion tank; 27. telescopic rod; 28. anchoring column; 3. sealing arc block; 4. anchoring mechanism; 41. fixed seat; 42. rotating seat; 43. hinged seat; 44. slideway; 45. piston block; 46. anchoring cone head; 47. hydraulic rod; 5. adaptive heat dissipation mechanism; 51. ventilation duct; 52. filter screen plate; 53. baffle; 54. temperature control telescopic column; 6. cleaning mechanism; 61. annular liquid storage chamber; 62. infusion tube; 63. control tank; 64. lifting block; 65. fixed rod; 66. support plate; 67. cleaning plate; 68. connecting rod; 69. guide wheel; 610. triangular block. DETAILED DESCRIPTION

[0029] The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0030] Example: Refer to Figures 1 to 5 , a portable surveying and mapping device based on BIM technology, comprising:

[0031] A base support 1, the upper end of which is fixedly connected with a transparent cover 11, and a surveying instrument 12 is arranged inside the transparent cover 11;

[0032] The adaptive fixing mechanism 2 is used to adaptively adjust the base bracket 1 according to the undulation of the ground. The adaptive fixing mechanism 2 includes a liquid storage chamber 21 opened inside the base bracket 1. The interior of the liquid storage chamber 21 is sealed and slidably connected to a piston plate 22. The upper inner wall of the liquid storage chamber 21 is fixedly connected to an electric push rod 23 for driving the piston plate 22. The circumferential inner wall of the liquid storage chamber 21 is provided with a plurality of infusion channels 24 distributed in a circumferential array. The lower wall of the base bracket 1 is rotatably connected to a plurality of rotating rollers 25 distributed in a circumferential array. The interior of the rotating roller 25 is provided with an infusion groove 26 selectively connected to the infusion channel 24 at a corresponding position. A telescopic rod 27 is fixedly connected to the rotating roller 25. The infusion groove 26 is connected to the interior of the telescopic rod 27. An anchor column 28 fixed to the ground is provided below the telescopic rod 27. A liquid storage space is formed between the interior of the telescopic rod 27, the infusion groove 26, the infusion channel 24, and the space below the piston plate 22 in the liquid storage chamber 21. The liquid storage space is filled with electrorheological fluid.

[0033] Specifically, a wire is provided inside the liquid storage chamber 21, and a power supply device connected in series with the wire is provided inside the base bracket 1. When the power supply device is powered on, the electric field strength around the wire is high. When the power supply device is powered off, the electric field strength around the wire is low. Since the electrorheological fluid can convert between liquid and solid when the electric field strength changes, the base bracket 1 can be adaptively adjusted.

[0034] Specifically, a plurality of electric telescopic rods for driving the rotating roller 25 are provided at the lower end of the base bracket 1. The driving method is that the electric telescopic rod drives the rack to move, and further drives the gear fixedly connected to the rotating roller 25 to rotate, so that the rotating roller 25 can drive the telescopic rod 27 and the anchor column 28 to rotate, so that the telescopic rod 27 and the anchor column 28 are supported during work, and the telescopic rod 27 and the anchor column 28 are retracted to the bottom of the base bracket 1 after the work is completed, so as to facilitate carrying.

[0035] Specifically, the lower wall of the base bracket 1 is fixedly connected with a plurality of sealing arc blocks 3 distributed in a circumferential array, and each rotating roller 25 is sealingly and slidably connected to the sealing arc block 3 at the corresponding position, so that when the rotating roller 25 is propped up, the electrorheological fluid in the rotating roller 25 can only be connected to the storage chamber 21 through the infusion groove 26 and the infusion channel 24, and when the rotating roller 25 is contracted, the infusion groove 26 on the rotating roller 25 is closed by the sealing arc block 3, so as to avoid overflow of the electrorheological fluid and ensure subsequent adaptive adjustment of the base bracket 1.

[0036] In view of the problem that the bracket supporting the surveying and mapping device in the prior art cannot be adaptively adjusted according to the ground conditions, resulting in poor stability of the bracket fixed on the ground, which in turn causes the surveying and mapping device to be unstable during use, the present invention sets an adaptive fixing mechanism 2, and before use, the power supply device is disconnected, so that the electric field strength around the wire is in a low state, so that the electrorheological fluid is in a liquid state, and at this time, the electric push rod 23 pushes the piston plate 22 to move downward in the liquid storage chamber 21, and the electrorheological fluid in the liquid storage chamber 21 is delivered through the infusion channel 24 and the infusion groove 26. The electric field strength around the conductor is high, and the electrorheological fluid changes from liquid to solid. The extension amount of the telescopic rods 27 cannot be changed, so that the state of the anchoring columns 28 abutting the ground cannot be changed, thereby increasing the stability of the base bracket 1 and the surveying instrument 12 above it, and improving the accuracy of the measurement results.

[0037] An anchoring mechanism 4 is provided between the telescopic rod 27 and the anchoring column 28 for improving the stability of the base bracket 1. The anchoring mechanism 4 includes a fixed seat 41 fixedly connected to the lower end of the telescopic rod 27. The bottom end of the fixed seat 41 is rotatably connected to a rotating seat 42. The bottom end of the rotating seat 42 is provided with a hinged seat 43. The anchoring column 28 is hinged to the hinged seat 43. A slide groove 44 is provided on the bottom wall of the anchoring column 28. The internal sealing sliding connection of the slide groove 44 is connected to a piston block 45. The bottom end of the piston block 45 is fixedly connected to an anchoring cone head 46. Hydraulic rods 47 for driving the piston block 45 are provided on the inner walls on both sides of the slide groove 44. A plurality of pressure sensors are arranged in a circular array on the bottom wall of the anchoring column 28. A microcontroller is provided inside the anchoring column 28. The microcontroller controls the opening and closing of the hydraulic rod 47 according to the electrical signal fed back by the pressure sensor.

[0038] Specifically, an anti-skid pad is fixedly connected to the peripheral side wall of the anchor column 28. The anti-skid pad can improve the stability of the anchor column 28 when the anchor column 28 abuts against the ground.

[0039] In order to further improve the stability of the base bracket 1 and the surveying instrument 12, the present invention sets an anchoring mechanism 4, and adjusts the extension and contraction amount of the telescopic rod 27, so that when the anchor column 28 abuts against the ground, due to the action of the rotating seat 42 and the hinged seat 43, the anchor column 28 below the telescopic rod 27 can rotate and swing, so that the bottom surface of the anchor column 28 can fit the ground well. When the bottom surface of the anchor column 28 is completely in contact with the ground, the continued delivery of the electrorheological fluid will increase the pressure of the anchor column 28 on the ground, and then transmit the pressure data detected by the pressure sensor to the microcontroller through an electrical signal. When the multiple pressure sensors on the bottom surface of the anchor column 28 are all subjected to a certain pressure, it means that the anchor column 28 is completely in contact with the ground. At this time, the microcontroller controls the hydraulic rod 47 to open, and drills the anchor cone head 46 into the ground, thereby improving the fixing effect of the anchor column 28 and the ground, and further increasing the stability of the base bracket 1 and the surveying instrument 12.

[0040] An adaptive heat dissipation mechanism 5 is provided on both side walls of the transparent cover body 11, which is used to adjust the heat dissipation and thermal insulation effect according to the ambient temperature. The adaptive heat dissipation mechanism 5 includes a ventilation duct 51 that runs through the side wall of the transparent cover body 11, and a filter screen plate 52 is fixedly connected to one end of the ventilation duct 51 away from the transparent cover body 11. Baffles 53 are slidably connected to both side walls of the ventilation duct 51, and temperature-controlled telescopic columns 54 are fixedly connected to both side outer walls of the ventilation duct 51. The interior of the temperature-controlled telescopic columns 54 is filled with a thermal expansion and contraction medium, and the telescopic end of the temperature-controlled telescopic columns 54 is fixedly connected to the baffle 53 at the corresponding position.

[0041] Specifically, the thermal expansion and contraction medium may be kerosene or other liquid medium with a large thermal expansion coefficient, which is not limited here.

[0042] In order to prevent the surveying and mapping instrument 12 from being damaged by overheating in a high temperature environment and malfunctioning in a low temperature environment, the present invention provides an adaptive heat dissipation mechanism 5. When in use, the size of the vent in the ventilation duct 51 can be adaptively adjusted through a thermal expansion and contraction medium, thereby adaptively adjusting the heat dissipation and heat preservation effect of the surveying and mapping instrument 12 according to the external working environment temperature. The specific adjustment process is as follows:

[0043] When the temperature is high, the thermal expansion and contraction medium expands to a larger volume, so that the extension degree of the temperature control telescopic column 54 increases, thereby pushing the two baffles 53 away from each other, making the vent in the ventilation duct 51 larger, increasing the air flow speed in the transparent cover 11, improving the heat dissipation effect, and preventing the surveying instrument from being overheated and damaged when used in a high temperature environment;

[0044] When the temperature is low, the thermal expansion and contraction medium shrinks to a smaller volume, thereby reducing the extension of the temperature control telescopic column 54, pulling the two baffles 53 closer to each other, making the vent in the ventilation duct 51 smaller, reducing the air flow rate in the transparent cover 11, improving the thermal insulation effect, avoiding affecting the normal operation of electronic components when the surveying instrument is used in a low temperature environment, and preventing the surveying instrument 12 from malfunctioning.

[0045] The upper end of the base bracket 1 is provided with a cleaning mechanism 6 driven by the anchoring mechanism 4, which is used to clean the filter screen plate 52 before each operation. The cleaning mechanism 6 includes an annular liquid storage chamber 61 opened inside the base bracket 1, and the positions above the piston block 45 in the multiple slide grooves 44 are all connected with infusion pipes 62, and the multiple infusion pipes 62 are all connected with the annular liquid storage chamber 61. The upper wall of the annular liquid storage chamber 61 is provided with two control grooves 63 arranged in the vertical direction. The control groove 63, the annular liquid storage chamber 61, the infusion pipe 62, and the space in the slide groove 44 above the piston block 45 form a second liquid storage space, and the second liquid storage space is filled with hydraulic Oil, the control groove 63 is sealed and slidably connected with a lifting block 64, the upper end of the lifting block 64 is fixedly connected with a fixing rod 65 extending to the top of the base bracket 1, the top of the fixing rod 65 is fixedly connected with a supporting plate 66, the upper end of the supporting plate 66 is slidably connected with a cleaning plate 67 in the horizontal direction, the cleaning plate 67 is used in conjunction with the filter screen plate 52 at the corresponding position, both ends of the cleaning plate 67 are fixedly connected with connecting rods 68, and one end of each connecting rod 68 away from the cleaning plate 67 is fixedly connected with a guide wheel 69, and two triangular blocks 610 are provided at the upper end of the base bracket 1, and the two guide wheels 69 successively contact and roll with the triangular blocks 610 at the corresponding positions.

[0046] Specifically, the two triangular blocks 610 on the same side are arranged in a mirror-like manner, and each triangular block 610 is fixedly connected to the upper end of the base bracket 1 through an L-shaped rod, so that the two triangular blocks 610 can staggeredly abut the two guide wheels 69 to push the cleaning plate 67 to move to both sides.

[0047] Specifically, two fixed blocks are fixedly connected to the support plate 66, and the cleaning plate 67 is elastically connected to the two fixed blocks by two springs, ensuring that the cleaning plate 67 is at the center of the support plate 66 in the initial state and just fits the filter screen plate 52, thereby ensuring the cleaning effect of the cleaning plate 67 on the filter screen plate 52.

[0048] In order to clean the filter screen 52 before each operation to avoid clogging of the filter screen 52 and thus affecting the heat dissipation effect of the surveying instrument 12, the present invention sets a cleaning mechanism 6. Before each operation, the anchoring column 28 needs to be fixed to the ground through the anchoring cone head 46. When the anchoring cone head 46 moves, the piston block 45 moves in the slide groove 44. Therefore, the hydraulic oil in the annular liquid storage chamber 61 and the control groove 63 can be transported to the slide groove 44 through the liquid delivery pipe 62, so that the liquid level of the hydraulic oil in the control groove 63 is reduced, thereby driving the lifting block 64 to move downward in the control groove 63. The support plate 66 is pulled downward by the fixing rod 65, so that the cleaning plate 67 on the support plate 66 cleans the filter screen plate 52. When the cleaning plate 67 moves downward, it can also drive the cleaning plate 67 to move horizontally relative to the support plate 66 under the action of the guide wheel 69 and the triangular block 610, and sweep the dust and impurities on the filter screen plate 52 to both sides to avoid dust and impurities being mixed between the cleaning plate 67 and the filter screen plate 52, resulting in reduced cleaning effect of the filter screen plate 52. Before each work, the filter screen plate 52 can be effectively cleaned to ensure the heat dissipation effect of the surveying instrument 12.

[0049] The present invention can be explained by the following operation mode:

[0050] When the transport mapping instrument 12 is carried, the telescopic rod 27 and the anchoring column 28 are retracted to below the base bracket 1. At this time, the infusion groove 26 on the rotating roller 25 is closed by the sealing arc block 3, and the electrorheological fluid cannot overflow;

[0051] When the surveying instrument 12 is in use, the rack is displaced by the electric telescopic rod, and the gear fixedly connected to the rotating roller 25 is further driven to rotate, so that the rotating roller 25 can drive the telescopic rod 27 and the anchor column 28 to rotate, support the telescopic rod 27 and the anchor column 28, keep the base bracket 1 in a horizontal state, and make the power supply device in a disconnected state. The piston plate 22 is pushed downward in the liquid storage chamber 21 by the electric push rod 23, and the electrorheological fluid in the liquid storage chamber 21 is transported to the inside of the plurality of telescopic rods 27 through the infusion channel 24 and the infusion tank 26, so that the anchor columns 28 under the plurality of telescopic rods 27 can all abut on the ground, so that the telescopic amount of the plurality of telescopic rods 27 can be flexibly adjusted according to the undulating state of the ground. Subsequently, the power supply device is powered on, and the electrorheological fluid changes from liquid to solid. The plurality of anchor columns 28 remain in a state of abutting the ground and cannot be changed, thereby increasing the stability of the base bracket 1 and the surveying instrument 12 above it.

[0052] When the bottom surface of the anchor column 28 is completely in contact with the ground, the continued delivery of the electrorheological fluid will increase the pressure of the anchor column 28 on the ground. When the multiple pressure sensors on the bottom surface of the anchor column 28 are all subjected to a certain pressure, it means that the anchor column 28 is completely in contact with the ground. At this time, the microcontroller controls the hydraulic rod 47 to open, and the anchor cone head 46 is drilled into the ground, thereby improving the fixing effect of the anchor column 28 and the ground.

[0053] At the same time, when the anchor cone head 46 drills into the ground, the piston block 45 moves in the slide groove 44, and the hydraulic oil in the annular liquid storage chamber 61 and the control groove 63 is transported to the slide groove 44 through the liquid delivery pipe 62, so that the liquid level of the hydraulic oil in the control groove 63 is reduced, thereby driving the lifting block 64 to move downward in the control groove 63, and pulling the support plate 66 to move downward through the fixing rod 65, so that the cleaning plate 67 on the support plate 66 cleans the filter screen plate 52. At the same time, under the action of the guide wheel 69 and the triangular block 610, the cleaning plate 67 is driven to move horizontally relative to the support plate 66, and the dust and impurities on the filter screen plate 52 are swept to both sides to avoid dust and impurities being mixed between the cleaning plate 67 and the filter screen plate 52. Before each work, the filter screen plate 52 is effectively cleaned;

[0054] In addition, when the surveying and mapping instrument 12 is working, the heat dissipation and heat preservation effect of the surveying and mapping instrument 12 is adaptively adjusted according to the external working environment temperature:

[0055] When the temperature is high, the thermal expansion and contraction medium expands to a larger volume, so that the extension degree of the temperature control telescopic column 54 increases, thereby pushing the two baffles 53 away from each other, making the vent in the ventilation duct 51 larger, increasing the air flow speed in the transparent cover 11, and improving the heat dissipation effect;

[0056] When the temperature is low, the thermal expansion and contraction medium shrinks to a smaller volume, thereby reducing the extension of the temperature control telescopic column 54, pulling the two baffles 53 closer to each other, improving the thermal insulation effect, and preventing the surveying instrument from affecting the normal operation of electronic components when used in a low temperature environment.

[0057] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A portable surveying and mapping device based on BIM technology, characterized in that: include: A base support (1), wherein the upper end of the base support (1) is fixedly connected to a transparent cover (11), and a surveying instrument (12) is arranged inside the transparent cover (11); The adaptive fixing mechanism (2) comprises a liquid storage chamber (21) provided inside a base support (1), the interior of the liquid storage chamber (21) being sealingly and slidably connected to a piston plate (22), the upper inner wall of the liquid storage chamber (21) being fixedly connected to an electric push rod (23) for driving the piston plate (22), a plurality of liquid infusion channels (24) being provided on the circumferential inner wall of the liquid storage chamber (21), a plurality of rotating rollers (25) being rotatably connected to the lower wall of the base support (1), the interior of the rotating rollers (25) being provided with a plurality of rotating rollers (25) corresponding to the positions of the rotating rollers. The infusion channel (24) is selectively connected to an infusion trough (26), the rotating roller (25) is fixedly connected to a telescopic rod (27), the infusion trough (26) is connected to the inside of the telescopic rod (27), an anchoring column (28) fixed to the ground is provided below the telescopic rod (27), and a first liquid storage space is formed between the inside of the telescopic rod (27), the infusion trough (26), the infusion channel (24), and the space below the piston plate (22) in the liquid storage chamber (21), and the first liquid storage space is filled with electrorheological fluid.

2. The portable surveying and mapping device based on BIM technology according to claim 1 is characterized in that: A conductive wire is provided inside the liquid storage chamber (21), and a power supply device connected in series with the conductive wire is provided inside the base support (1).

3. The portable surveying and mapping device based on BIM technology according to claim 1 is characterized in that: A plurality of sealing arc blocks (3) are fixedly connected to the lower wall of the base support (1), and each of the rotating rollers (25) is sealingly and slidably connected to a sealing arc block (3) at a corresponding position.

4. The portable surveying and mapping device based on BIM technology according to claim 1 is characterized in that: An anchoring mechanism (4) is provided between the telescopic rod (27) and the anchoring column (28), comprising a fixing seat (41) fixedly connected to the lower end of the telescopic rod (27); the bottom end of the fixing seat (41) is rotatably connected to a rotating seat (42); the bottom end of the rotating seat (42) is provided with a hinge seat (43); the anchoring column (28) is hinged to the hinge seat (43); a sliding groove (44) is provided on the bottom wall of the anchoring column (28); the interior of the sliding groove (44) is sealingly slidably connected to a piston block (45); the bottom end of the piston block (45) is fixedly connected to an anchoring cone head (46); hydraulic rods (47) for driving the piston block (45) are provided on the inner walls on both sides of the sliding groove (44); a plurality of pressure sensors are provided on the bottom wall of the anchoring column (28); a microcontroller is provided inside the anchoring column (28); the microcontroller controls the opening and closing of the hydraulic rod (47) according to an electrical signal fed back by the pressure sensor.

5. The portable surveying and mapping device based on BIM technology according to claim 1 is characterized in that: An anti-slip pad is fixedly connected to the peripheral side wall of the anchor column (28).

6. The portable surveying and mapping device based on BIM technology according to claim 4 is characterized in that: The two side walls of the transparent cover (11) are both provided with an adaptive heat dissipation mechanism (5), comprising a ventilation duct (51) penetrating the side wall of the transparent cover (11), the end of the ventilation duct (51) away from the transparent cover (11) being fixedly connected to a filter screen plate (52), the two side walls of the ventilation duct (51) being penetrating with a baffle (53) being slidably connected, the two side outer walls of the ventilation duct (51) being fixedly connected with a temperature control telescopic column (54), the interior of the temperature control telescopic column (54) being filled with a thermal expansion and contraction medium, and the telescopic end of the temperature control telescopic column (54) being fixedly connected to the baffle (53) at a corresponding position.

7. The portable surveying and mapping device based on BIM technology according to claim 6 is characterized in that: The upper end of the base support (1) is provided with a cleaning mechanism (6) driven by the anchor mechanism (4), including an annular liquid storage cavity (61) opened inside the base support (1), multiple positions in the slide grooves (44) located above the piston block (45) are connected with a liquid infusion tube (62), and multiple liquid infusion tubes (62) are connected with the annular liquid storage cavity (61), and the upper wall of the annular liquid storage cavity (61) is provided with two control grooves (63), and a second liquid storage space is formed between the control grooves (63), the annular liquid storage cavity (61), the liquid infusion tube (62), and the space in the slide groove (44) located above the piston block (45), and the second liquid storage space is filled with hydraulic oil, and the control grooves (63) are sealed and slidably connected with a lifting block. (64), the upper end of the lifting block (64) is fixedly connected to a fixing rod (65) extending to the top of the base bracket (1), the top of the fixing rod (65) is fixedly connected to a support plate (66), the upper end of the support plate (66) is slidably connected to a cleaning plate (67) in a horizontal direction, the cleaning plate (67) is used in conjunction with the filter screen plate (52) at a corresponding position, both ends of the cleaning plate (67) are fixedly connected to connecting rods (68), and one end of each connecting rod (68) away from the cleaning plate (67) is fixedly connected to a guide wheel (69), and the upper end of the base bracket (1) is provided with two triangular blocks (610), and the two guide wheels (69) successively contact and roll with the triangular blocks (610) at corresponding positions.

8. The portable surveying and mapping device based on BIM technology according to claim 7 is characterized in that: The two triangular blocks (610) on the same side are arranged in a mirror-image manner, and each triangular block (610) is fixedly connected to the upper end of the base bracket (1) via an L-shaped rod.

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