Portable geographic information surveying instrument

Abstract

The invention relates to the technical field of geographic information surveying and mapping devices, in particular to a portable geographic information surveying and mapping instrument. Comprising a mounting plate, a tripod is arranged on the lower side of the mounting plate, a fixing plate is located above the mounting plate, an adjusting knob is arranged between the fixing plate and the mounting plate, and a total station is mounted on the upper side of the fixing plate; the protective plates are evenly distributed in the circumferential direction and rotationally connected to the fixing plate, first torsional springs are arranged between the protective plates and the fixing plate, and the protective plates are provided with air bags and air storage devices. When the tripod topples over, the air storage device is triggered to inflate the air bag, so that the air bag surrounds the periphery of the total station after being expanded to protect the total station, and after the protective plate is in contact with the ground, the impact force borne by the protective plate is buffered, so that the impact force borne by the total station is reduced, and the total station is prevented from being damaged due to impact.

Description

Technical Field

[0001] The present invention relates to the technical field of geodetic surveying and mapping devices, and particularly to a portable geodetic surveying instrument. Background Art

[0002] Geodetic surveying and mapping refers to the process of accurately measuring the position, shape, size, and attributes of surface objects through scientific methods and technical means, and converting this information into digital or graphical forms. Geodetic surveying and mapping is mainly used in multiple fields such as urban planning, land management, environmental protection, resource exploration, and disaster warning to assist decision-makers in formulating policies, planning projects, and solving problems. Among them, the total station is one of the extremely important tools in modern geodetic surveying and mapping. It integrates the functions of devices such as electronic distance meters (EDMs) and electronic theodolites, and can quickly and accurately measure angles and distances.

[0003] Currently, during the use of the total station, it is usually set on a tripod to obtain a stable support platform. However, when the total station is used on a muddy slope (after rain), compared with hard ground, the muddy ground is softer, and it is easy to sink when placing the tripod, thus unable to provide a stable supporting force for the tripod, resulting in the total station being more vulnerable to the influence of the external environment and tipping over, and even causing the total station to collide with the ground and be damaged, directly affecting the subsequent normal use of the total station. Summary of the Invention

[0004] In order to overcome the deficiencies existing in the use of the existing total station, the present invention provides a portable geodetic surveying instrument.

[0005] The technical solution of the present invention is as follows: A portable geodetic surveying instrument, comprising: A tripod, an installation plate is installed on the upper side of the tripod, a fixing plate is arranged above the installation plate, and an adjusting knob is arranged between the fixing plate and the installation plate, and a total station is installed on the upper side of the fixing plate; Guard plates, several of which are evenly distributed circumferentially, are all rotatably connected to the fixing plate, a first torsion spring is arranged between the guard plate and the fixing plate, and the guard plate is provided with an airbag and a gas storage device; First limit posts, the number of which is the same as the number of the guard plates, are all slidably connected to the fixing plate, the first limit posts are connected to second limit posts through pull ropes, and a limit groove for the adjacent second limit posts to slide is arranged on the outer side of the guard plate; A triggering assembly, which is arranged on the fixing plate, and the triggering assembly is used to trigger all the gas storage devices when the tripod tips over.

[0006] As a preferred technical solution of the present invention, the triggering assembly includes: The connecting frame is fixedly connected to the lower side of the fixed plate, and the mounting plate is provided with a through hole for the connecting frame to pass through; The moving rod is ball-jointed to the lower end of the connecting frame. The moving rod is connected to a connecting shell in a limited sliding manner. The connecting shell is slidably connected to the connecting frame, and a pin for connecting the two is provided between the connecting shell and the connecting frame; The elastic liquid sac. A connecting rod is fixedly connected to the lower part of the connecting frame. The elastic liquid sac is arranged on the connecting rod of the connecting frame, and the moving rod is used to squeeze the elastic liquid sac; The first liquid storage shell is fixedly connected to the connecting frame. The first liquid storage shell is communicated with the elastic liquid sac through a hose. A first one-way valve is arranged on the hose of the elastic liquid sac. A first piston rod is slidably connected to the first liquid storage shell; The limiting plate is slidably connected to the connecting frame, and the first piston rod is fixedly connected to the limiting plate.

[0007] As a preferred technical solution of the present invention, a heavy ball is fixedly connected to the lower end of the moving rod, and the center of gravity of the two is located on the heavy ball of the moving rod.

[0008] As a preferred technical solution of the present invention, the trigger assembly further includes: The L-shaped plates, the number of which is the same as that of the guard plates. The fixed plate is provided with storage holes with the same number as the guard plates. The L-shaped plates are slidably connected in adjacent storage holes on the fixed plate. The L-shaped plates are used to limit the adjacent first limiting posts, and a tension spring is arranged between the L-shaped plates and the fixed plate; The elastic electrode plates are fixedly connected in one of the storage holes on the fixed plate. A fixed electrode plate electrically connected to the elastic electrode plates is fixedly connected in this storage hole. The L-shaped plates are used to squeeze the elastic electrode plates to make the elastic electrode plates contact the fixed electrode plates. All the gas storage devices are electrically connected to the elastic electrode plates.

[0009] As a preferred technical solution of the present invention, a push plate is slidably connected to the guard plate. The push plate contacts the airbag. The push plate is fixedly connected with a sealing plate through an arc-shaped rod. The sealing plate slides on the adjacent guard plate. A connecting groove for the sealing plate on the adjacent guard plate to slide is arranged on the side of the guard plate away from the sealing plate thereon.

[0010] As a preferred technical solution of the present invention, there is a damping between the arc-shaped rod on the push plate and the adjacent guard plate, which is used to increase the resistance suffered by the push plate when moving and avoid the push plate moving due to vibration.

[0011] As a preferred technical solution of the present invention, it further includes: Moving plates, the number of which is the same as that of the protection plates. The protection plates are provided with storage cavities, the moving plates are slidably connected in the storage cavities, and a first spring is arranged between the moving plates and the protection plates; Fixing members, the number of which is the same as that of the moving plates, are fixedly connected to the moving plates. The fixing members are located in the storage cavities. A limiting block is slidably connected to the outer side of the protection plate, and the limiting block is used for limiting the adjacent fixing members. A second spring is fixedly connected between the limiting block and the adjacent protection plate; An unlocking assembly is arranged on the fixing plate, and the unlocking assembly is used to change the positions of all the limiting blocks.

[0012] As a preferred technical solution of the present invention, the unlocking assembly includes: A second liquid storage shell is fixedly connected to the connecting frame, and a second piston rod is slidably connected in the second liquid storage shell; A connecting plate is slidably connected to the connecting frame. The connecting plate is fixedly connected to the second piston rod, and the connecting plate is located below the limiting plate; Connecting ropes, the number of which is the same as that of the protection plates, are all fixedly connected to the connecting plate, and the connecting ropes are fixedly connected to the adjacent limiting blocks; A transmission assembly is arranged on the connecting frame, and the transmission assembly is used to detect the working environment of the total station.

[0013] As a preferred technical solution of the present invention, the transmission assembly includes: A transfer shell is fixedly connected to the connecting frame. The first liquid storage shell and the second liquid storage shell are both fixedly connected to the transfer shell, and the second liquid storage shell is communicated with the transfer shell through a hose. The transfer shell is communicated with the hose of the elastic liquid bag, and a second one-way valve is arranged between the transfer shell and the hose of the elastic liquid bag.

[0014] As a preferred technical solution of the present invention, the transmission assembly further includes: A moving shell is located inside the transfer shell; There are three connecting rods, all of which are slidably connected to the transfer shell. The connecting rods are fixedly connected to the moving shell, and the connecting rods are fixedly connected to the adjacent legs of the tripod through elastic ropes; A blocking block is slidably connected in the moving shell. A third spring is fixedly connected between the blocking block and the moving shell, and the blocking block is used to block the communication between the second liquid storage shell and the transfer shell.

[0015] Beneficial effects: When the tripod is tilted, the present invention triggers the air storage device to inflate the airbag, so that after the airbag expands, it surrounds the total station to protect the total station, and after the guard plate contacts the ground, the impact force received by the guard plate is buffered, thereby reducing the impact force received by the total station and avoiding damage to the total station due to impact; at the same time, when all the guard plates are in the initial position, they jointly form a complete ring to reduce the overall floor area of all the fixing plates and improve the portability of the device.

[0016] During the inflation process of the airbag, the push plate is squeezed, so that the sealing plate moves into the adjacent connecting groove to connect two adjacent guard plates, so that when the right guard plate contacts the ground, the impact force received by the right guard plate is transmitted to the other guard plates.

[0017] The sealing plate increases the sealing performance between two adjacent guard plates, avoiding soil on the ground from entering the guard plate and contacting the total station, which affects the normal use of the total station.

[0018] When the tripod is tilted, the fixing part is thrown out of the storage cavity, the fixing part is opened, and the opened fixing part contacts an object in the external environment, increasing the contact area between the device and the ground, and at the same time increasing the acting force between the device and the ground to fix the device to the ground and prevent the device from sliding or rolling along the slope after tipping over. Description of the drawings

[0019] Figure 1 is a three-dimensional structure schematic diagram of the present invention; Figure 2 is a three-dimensional structure schematic diagram of the fixing plate and the total station of the present invention; Figure 3 is a three-dimensional structure schematic diagram of the connecting frame and the moving rod of the present invention; Figure 4 is a three-dimensional structure sectional view of the guard plate of the present invention; Figure 5 is a three-dimensional structure schematic diagram of the airbag and the air storage device of the present invention; Figure 6 is a three-dimensional structure schematic diagram of the push plate and the sealing plate of the present invention; Figure 7 is an exploded three-dimensional structure diagram of the limit plate and the connecting plate of the present invention; Figure 8 is a three-dimensional structure sectional view of the transfer housing of the present invention; Figure 9 is a three-dimensional structure schematic diagram of the first limit post and the L-shaped plate of the present invention; Figure 10 is a three-dimensional structure sectional view of the moving housing of the present invention.

[0020] Wherein: 1 - mounting plate, 101 - tripod, 2 - fixing plate, 3 - total station, 4 - protection plate, 5 - airbag, 6 - gas storage device, 7 - first limiting post, 8 - second limiting post, 81 - limiting groove, 9 - connecting frame, 10 - moving rod, 11 - connecting shell, 12 - elastic liquid sac, 13 - first liquid storage shell, 14 - first piston rod, 15 - limiting plate, 16 - L-shaped plate, 18 - elastic electrode sheet, 19 - pushing plate, 20 - sealing plate, 21 - connecting groove, 22 - storage cavity, 221 - moving plate, 222 - fixing piece, 23 - limiting block, 25 - second liquid storage shell, 26 - second piston rod, 27 - connecting plate, 28 - connecting rope, 29 - transfer shell, 30 - moving shell, 31 - connecting rod, 34 - blocking block. Detailed implementation mode

[0021] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but it is not a limitation to the present invention.

[0022] Embodiment 1: A portable geographic information surveying and mapping instrument, as Figures 1-9 shown, includes: a tripod 101, a mounting plate 1 is installed on the upper side of the tripod 101, the tripod 101 is arranged on the lower side of the mounting plate 1, a fixing plate 2 is arranged above the mounting plate 1, and an adjusting knob is arranged between the fixing plate 2 and the mounting plate 1, and a total station 3 is installed on the upper side of the fixing plate 2; protection plates 4, having a plurality of them evenly distributed circumferentially, are all rotatably connected to the fixing plate 2, a first torsion spring is arranged between the protection plate 4 and the fixing plate 2, and the protection plate 4 is provided with an airbag 5 and a gas storage device 6; first limiting posts 7, the number of which is the same as the number of the protection plates 4, are all slidably connected to the fixing plate 2, the first limiting posts 7 are connected to a second limiting post 8 through a pulling rope, and a limiting groove 81 for the adjacent second limiting posts 8 to slide is arranged on the outer side of the protection plate 4; a triggering assembly, arranged on the fixing plate 2, and the triggering assembly is used for triggering all the gas storage devices 6 when the tripod 101 topples over.

[0023] In the above solution, the tripod 101 is an existing device, and the three legs of the tripod 101 are all telescopic legs, which are used for supporting and fixing the total station 3; the adjusting knob on the mounting plate 1 is an existing device, and during use, the staff adjusts the fixing plate 2 to a horizontal state through the adjusting knob; the specific number of the protection plates 4 can be selected by the staff according to the actual situation during use, and six protection plates 4 evenly distributed circumferentially are taken as an example for illustration in both the figure and the text, and initially, the six protection plates 4 are all located on the upper side of the fixing plate 2, and initially, the outer sides of the six fixing plates 2 enclose a complete ring; the airbag 5 is located inside the protection plate 4, and the gas storage device 6 stores chemical drugs that can react to generate gas, which is used for inflating the airbag 5 when the tripod 101 topples over, so that the airbag 5 expands rapidly.

[0024] Furthermore, as Figures 2-5 、 Figure 7And Figure 8 As shown in Figure 8 , the triggering assembly includes: a connecting frame 9, fixedly connected to the lower side of the fixed plate 2, and the mounting plate 1 is provided with a through hole for the connecting frame 9 to pass through; a moving rod 10, ball-jointed to the lower end of the connecting frame 9, the moving rod 10 is connected to a connecting shell 11 in a limited sliding manner, the connecting shell 11 is slidably connected to the connecting frame 9, and a plug pin for connecting the two is provided between the connecting shell 11 and the connecting frame 9; an elastic liquid sac 12, a connecting rod is fixedly connected to the lower part of the connecting frame 9, and the elastic liquid sac 12 is arranged on the connecting rod of the connecting frame 9; a first liquid storage shell 13, fixedly connected to the connecting frame 9, the first liquid storage shell 13 is communicated with the elastic liquid sac 12 through a hose, a first one-way valve is arranged on the hose of the elastic liquid sac 12, and a first piston rod 14 is slidably connected to the first liquid storage shell 13; a limiting plate 15, slidably connected to the connecting frame 9, and the first piston rod 14 is fixedly connected to the limiting plate 15.

[0025] In the above solution, the connecting frame 9 is located in the through hole of the mounting plate 1; initially, the connecting shell 11 is in contact with the connecting frame 9, so that the connecting frame 9 and the moving rod 10 are fixedly connected through the connecting shell 11; the elastic liquid sac 12 is filled with hydraulic oil; the hydraulic oil in the elastic liquid sac 12 can only flow into the first liquid storage shell 13 through the first one-way valve on its hose, so that the first piston rod 14 can only move downward along the first liquid storage shell 13.

[0026] Further, as Figure 8 And Figure 9 As shown in Figure 9 , the triggering assembly further includes: L-shaped plates 16, the number of which is the same as the number of the guard plates 4, the fixed plate 2 is provided with storage holes with the same number as the number of the guard plates 4, the L-shaped plates 16 are slidably connected in the adjacent storage holes on the fixed plate 2, the L-shaped plates 16 are used to limit the adjacent first limiting posts 7, and a tension spring is arranged between the L-shaped plates 16 and the fixed plate 2; an elastic electrode sheet 18, fixedly connected in one of the storage holes on the fixed plate 2, a fixed electrode sheet electrically connected to the elastic electrode sheet 18 is fixedly connected in this storage hole, the L-shaped plates 16 are used to squeeze the elastic electrode sheet 18 so that the elastic electrode sheet 18 contacts the fixed electrode sheet, and all the gas storage devices 6 are electrically connected to the elastic electrode sheet 18.

[0027] In the above solution, there are six L-shaped plates 16, the number of storage holes on the fixed plate 2 is six, and the tension springs on the L-shaped plates 16 are in a stretched state initially; both the elastic electrode sheet 18 and the fixed electrode sheet are located in the storage hole on the right side of the fixed plate 2, initially the elastic electrode sheet 18 does not contact the fixed electrode sheet, and the elastic electrode sheet 18 is inclined.

[0028] Further, as Figure 8 As shown in Figure 8 , a heavy ball is fixedly connected to the lower end of the moving rod 10, and the center of gravity of the two is located on the heavy ball of the moving rod 10, so that when the tripod 101 topples, the moving rod 10 can smoothly squeeze the elastic liquid sac 12.

[0029] The specific workflow of the above scheme is as follows: When it is necessary to use this device to survey the geographic information of a specified area, the staff first adjusts the tripod 101 to a supporting state, then installs the mounting plate 1 on the tripod 101, and adjusts the fixing plate 2 to a horizontal state through the adjustment knob on the mounting plate 1, thereby completing the calibration of the total station 3.

[0030] After the calibration of the total station 3 is completed, the staff swings the six guard plates 4 in sequence to rotate the guard plates 4 around the connection between the guard plates 4 and the fixed plate 2. The following is a description of the movement process of the right guard plate 4: During the rotation of the guard plate 4, the torsion spring between the guard plate 4 and the fixed plate 2 is twisted and force is accumulated. After the guard plate 4 rotates 180°, the staff moves the second limit column 8 to the limit groove 81. Then, under the action of the torsion spring on it, the guard plate 4 pulls the pull rope between the first limit column 7 and the second limit column 8 through the mutual cooperation of the limit groove 81 and the second limit column 8 thereon, so that the pull rope between the first limit column 7 and the second limit column 8 is in a taut state. The first limit column 7, the second limit column 8 and the pull rope therebetween jointly limit the guard plate 4, so that the guard plate 4 cannot be reset under the action of the torsion spring on it.

[0031] After the positions of the six guard plates 4 are adjusted, the staff pulls out the latches on the connecting frame 9 and the connecting shell 11, so that the connecting shell 11 moves downward along the moving rod 10 under the action of its own gravity. After the connecting shell 11 loses contact with the connecting frame 9, the connection relationship between the connecting frame 9 and the moving rod 10 is converted into a ball connection. At this time, the moving rod 10 is in a vertical state under the action of its own gravity. Then the staff uses the total station 3 to survey and record the geographic information of the designated location. During the surveying process, if the tripod 101 is affected by the outside world (wind, collision or other influences) and tilts to the right, and the staff fails to lift the tripod 101 in time: During the tipping process of the tripod 101, the tripod 101 drives the moving rod 10 and other parts connected thereto to move synchronously through the fixing plate 2 and the connecting frame 9. When the tripod 101 just starts to tip over, the vertical state of the moving rod 10 does not change. Therefore, when the connecting frame 9 drives the elastic liquid bag 12 to move together, the elastic liquid bag 12 will be squeezed and deformed by the moving rod 10, so that the hydraulic oil in the elastic liquid bag 12 flows into the first liquid storage shell 13 through the hose, and then the first piston rod 14 is squeezed and drives the limit plate 15 to move downward synchronously.

[0032] When the limit plate 15 loses contact with the six L-shaped plates 16, the six L-shaped plates 16 move toward the direction close to the central axis of the fixed plate 2 under the action of the tension springs thereon. When the six L-shaped plates 16 lose contact with the adjacent first limit columns 7 respectively (at this time the L-shaped plates 16 can still continue to move), the six guard plates 4 are reset to their initial positions under the action of the first torsion springs thereon. Even if the six guard plates 4 are rotated to the upper side of the fixed plate 2, the six guard plates 4 respectively drive the adjacent first limit columns 7, the second limit columns 8 and the pull ropes therebetween to move synchronously during this process.

[0033] During the movement of the above-mentioned six L-shaped plates 16, the L-shaped plate 16 on the right squeezes the elastic electrode sheet 18, so that the elastic electrode sheet 18 is close to the fixed electrode sheet on the fixed plate 2. When the six L-shaped plates 16 all move to the extreme position (that is, the tension springs on the six L-shaped plates 16 are restored to the unstretched state, and the six guard plates 4 have all rotated to the upper side of the fixed plate 2), the elastic electrode sheet 18 contacts the fixed electrode sheet on the fixed plate 2, thereby triggering all the gas storage devices 6, so that the medicines stored in the gas storage devices 6 produce gas to fill the adjacent airbags 5 (the specific working principle can refer to the inflation process of the airbag), so that the six airbags 5 jointly protect the total station 3, and after the guard plate 4 contacts the ground, the six airbags 5 jointly buffer the impact force exerted on the guard plate 4, thereby reducing the impact force exerted on the total station 3 and preventing the total station 3 from being damaged by the impact.

[0034] After the tripod 101 falls over, the staff will lift up the tripod 101, reset all the above parts to their initial positions, replenish the consumed medicines in the gas storage device 6, and move the six L-shaped plates 16 to their initial positions. Then the staff will extract the hydraulic oil delivered to the first liquid storage shell 13, so that the first piston rod 14 drives the limit plate 15 to reset upward, and the limit plate 15 will re-limit the six L-shaped plates 16, and replenish the extracted hydraulic oil into the elastic liquid bag 12 for subsequent use.

[0035] Further, such as Figures 4-6 As shown, the guard plate 4 is slidably connected to a push plate 19, the push plate 19 contacts the airbag 5, the push plate 19 is fixedly connected to a sealing plate 20 through an arc rod, the sealing plate 20 slides on the adjacent guard plate 4, and a connecting groove 21 is provided on the side of the guard plate 4 away from the sealing plate 20 thereon for the sliding of the sealing plate 20 on the adjacent guard plate 4.

[0036] Furthermore, if Figure 6 As shown, there is damping between the arc-shaped rod on the push plate 19 and the adjacent guard plate 4, which is used to increase the resistance encountered by the push plate 19 when it moves, so as to maintain the initial position of the push plate 19 and prevent the push plate 19 from moving due to vibration.

[0037] In the above solution, all the sealing plates 20 and all the connecting grooves 21 are staggered in the circumferential direction, and both the sealing plates 20 and the connecting grooves 21 are arc-shaped. During the inflation process of the airbag 5, the airbag 5 pushes the adjacent push plates 19 to move, so that the push plates 19 drive the adjacent sealing plates 20 to move clockwise through the arc-shaped rods thereon, and then the sealing plates 20 move into the connecting grooves 21 of the adjacent guard plates 4 to connect the adjacent two guard plates 4. Thus, when the right guard plate 4 contacts the ground, the impact force received by the right guard plate 4 is transmitted to the other guard plates 4 (the impact force received by the right guard plate 4 is unloaded), and the sealing performance between the adjacent two guard plates 4 is increased through the sealing plates 20, preventing the soil on the ground from entering the guard plates 4 and contacting the total station 3, which affects the normal use of the total station 3.

[0038] Embodiment 2: On the basis of Embodiment 1, as Figure 4 and Figure 5 shown, it further includes: moving plates 221, the number of which is the same as that of the guard plates 4. The guard plates 4 are provided with storage cavities 22, and the moving plates 221 are slidably connected to the storage cavities 22. A first spring is arranged between the moving plates 221 and the guard plates 4; fixing members 222, the number of which is the same as that of the moving plates 221, are fixedly connected to the moving plates 221. The fixing members 222 are located in the storage cavities 22. The outer sides of the guard plates 4 are slidably connected with limiting blocks 23, and the limiting blocks 23 are used to limit the adjacent fixing members 222. A second spring is fixedly connected between the limiting blocks 23 and the adjacent guard plates 4; an unlocking assembly is arranged on the fixing plate 2, and the unlocking assembly is used to change the positions of all the limiting blocks 23.

[0039] In the above solution, the numbers of the storage cavities 22, the moving plates 221, the fixing members 222 and the limiting blocks 23 are all represented by six as an example. The storage cavities 22 are located below the adjacent guard plates 4. Initially, the first spring on the moving plates 221 is in a compressed state; the fixing members 222 are provided with elastic nets, and the elastic nets on the fixing members 222 are in a contracted state initially.

[0040] Furthermore, as Figure 4 , Figure 5 , Figure 7 and Figure 8 shown, the unlocking assembly includes: a second liquid storage shell 25, fixedly connected to the connecting frame 9. A second piston rod 26 is slidably connected in the second liquid storage shell 25; a connecting plate 27 is slidably connected to the connecting frame 9, and the connecting plate 27 is fixedly connected to the second piston rod 26. The connecting plate 27 is located below the limiting plate 15; connecting ropes 28, the number of which is the same as that of the guard plates 4, are all fixedly connected to the connecting plate 27, and the connecting ropes 28 are fixedly connected to the adjacent limiting blocks 23; a transmission assembly is arranged on the connecting frame 9, and the transmission assembly is used to detect the working environment of the total station 3.

[0041] In the above solution, the distance between the connecting plate 27 and the limiting plate 15 is sufficient to support the downward movement of the limiting plate 15 until it loses contact with the L-shaped plate 16; the connecting ropes 28 are represented by six examples both in the figure and in the text.

[0042] Furthermore, as Figure 8 and Figure 10 shown, the transmission assembly includes: a transfer housing 29, fixedly connected to the connecting frame 9, the first liquid storage housing 13 and the second liquid storage housing 25 are both fixedly connected to the transfer housing 29, and the second liquid storage housing 25 is communicated with the transfer housing 29 through a hose. The transfer housing 29 is communicated with the hose of the elastic liquid bladder 12, and a second one-way valve is arranged between the hose of the transfer housing 29 and the hose of the elastic liquid bladder 12; the transmission assembly further includes: a moving housing 30, located inside the transfer housing 29; three connecting rods 31, all slidably connected to the transfer housing 29, the connecting rods 31 are fixedly connected to the moving housing 30, and the connecting rods 31 are fixedly connected to the adjacent legs of the tripod 101 through elastic ropes; a blocking block 34, slidably connected inside the moving housing 30, a third spring is fixedly connected between the blocking block 34 and the moving housing 30, and the blocking block 34 is used to block the communication between the second liquid storage housing 25 and the transfer housing 29.

[0043] In the above solution, the transfer housing 29 stores hydraulic oil, and the hydraulic oil in the elastic liquid bladder 12 can only flow into the transfer housing 29 through the hose and the second one-way valve on the transfer housing 29; the arrangement of the three connecting rods 31 is the same as the arrangement of the three legs of the tripod 101, and the three connecting rods 31 correspond to the three legs of the tripod 101 one by one. The connecting rods 31 are fixedly connected to the telescopic ends of the adjacent legs of the tripod 101 through elastic ropes; the upper part of the blocking block 34 is set to be frustum-shaped to enhance the blocking effect between the blocking block 34 and the second liquid storage housing 25. Initially, the blocking block 34 has blocked the communication between the second liquid storage housing 25 and the transfer housing 29.

[0044] The specific working process of the above solution is as follows: Initially, all six connecting ropes 28 are in a tensioned state. After the above six guard plates 4 rotate to the lower side of the fixed plate 2, all six connecting ropes 28 are in a relaxed state.

[0045] During the process of adjusting the positions of the three legs of the tripod 101 above, the following takes the movement process of the left leg of the tripod 101 as an example for description: During the process of pulling out the telescopic end of the left leg of the tripod 101, the telescopic end of the left leg of the tripod 101 drives the connecting rod 31 to move synchronously through the elastic cord (stretching and storing energy in the elastic cord), and the connecting rod 31 drives the moving shell 30 to move leftward synchronously. The moving shell 30 drives the blocking block 34 to move leftward synchronously, so that the blocking block 34 moves downward under the extrusion of the middle transfer shell 29 during the movement, compressing the third spring on the moving shell 30, connecting the second liquid storage shell 25 with the middle transfer shell 29, enabling the hydraulic oil in the elastic liquid sac 12 to flow into the middle transfer shell 29 through the hose, and enabling the hydraulic oil flowing into the middle transfer shell 29 to flow into the second liquid storage shell 25 through the hose.

[0046] After the adjustment of the three legs of the tripod 101 is completed as described above, if the tripod 101 is on a slope (taking the slope with the right side lower and the left side higher as an example), the extended length of the left leg of the tripod 101 is shorter than that of the other two legs. As a result, the energy stored in the elastic cord on the left connecting rod 31 is less than that on the other two connecting rods 31. At this time, the whole moving shell 30 will be biased to the right, thus connecting the second liquid storage shell 25 with the middle transfer shell 29. Subsequently, during the process of the hydraulic oil in the elastic liquid sac 12 flowing into the first liquid storage shell 13, the hydraulic oil in the elastic liquid sac 12 flows into the middle transfer shell 29, and then flows into the second liquid storage shell 25 through the middle transfer shell 29, causing the second piston rod 26 to drive the connecting plate 27 to move downward synchronously, changing the lowest points of the six connecting cords 28 (at this time, the guard plate 4 has not rotated to the upper side of the fixed plate 2).

[0047] During the process of the above-mentioned guard plate 4 resetting to its initial position, as the rotation angle of the guard plate 4 gradually increases, the distance between the six limit blocks 23 and the connecting plate 27 gradually increases, thereby gradually converting the six connecting ropes 28 from a relaxed state to a tensioned state. When the six connecting ropes 28 are in a tensioned state again, the guard plate 4 has not yet been reset to its initial position. During the subsequent rotation of the six guard plates 4, the six limit blocks 23 are respectively pulled by the adjacent connecting ropes 28 and move downward relative to the adjacent guard plates 4, thereby gradually reducing the contact area between the limit blocks 23 and the adjacent fixing members 222, and compressing and storing energy in the second springs on the limit blocks 23. Until the guard plate 4 rotates to the upper side of the fixing plate 2, the limit blocks 23 are completely out of contact with the adjacent fixing members 222. At this time, the six moving plates 221 drive the adjacent fixing members 222 to move outward (throw the fixing members 222 outward) from the adjacent storage cavities 22 under the action of the first springs thereon, causing the elastic nets on the fixing members 222 to open, and making the opened elastic nets on the fixing members 222 contact objects in the external environment (such as soil blocks, tree branches, etc.), increasing the contact area between the device and the ground, and at the same time increasing the acting force between the device and the ground, fixing the device to the ground, avoiding the situation that the device slides or rolls along the slope after tipping over, and further avoiding the device from colliding with other objects on the ground, so as to ensure that the total station 3 can be used normally subsequently.

[0048] During the process of the resetting of each part of the above-mentioned device, the staff extracts the hydraulic oil in the second liquid storage shell 25, enables the second piston rod 26 to reset upward, and conveys the extracted hydraulic oil into the elastic liquid bag 12, and selects whether to replace the elastic net on the fixing member 222 according to the damage degree of the elastic net on the fixing member 222 for subsequent use.

[0049] When the device is used on a horizontal ground, even when the device tips over, the position of the device after tipping over is relatively stable. Therefore, it is not necessary to use the elastic net on the fixing member 222 to connect the device to the ground. When the device is used on a horizontal ground, the moving lengths of the telescopic ends of the three legs of the tripod 101 are close, so the position of the moving shell 30 does not change, thereby disconnecting the second liquid storage shell 25 from the transfer shell 29. At this time, when the tripod 101 tips over, the six fixing members 222 cannot move out of the adjacent storage cavities 22.

[0050] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A portable geographic information surveying and mapping instrument, characterized in that: Included are: A tripod (101), wherein a mounting plate (1) is mounted on the upper side of the tripod (101), a fixing plate (2) is arranged above the mounting plate (1), an adjustment knob is arranged between the fixing plate (2) and the mounting plate (1), and a total station (3) is mounted on the upper side of the fixing plate (2); The guard plate (4) has a plurality of guard plates evenly distributed in the circumferential direction and are all rotatably connected to the fixing plate (2); a first torsion spring is provided between the guard plate (4) and the fixing plate (2); and the guard plate (4) is provided with an air bag (5) and an air storage device (6); The number of first limiting columns (7) is the same as that of the guard plates (4), and both are slidably connected to the fixing plate (2); the first limiting columns (7) are connected to second limiting columns (8) via a pull rope, and the outer side of the guard plate (4) is provided with a limiting groove (81) for sliding of the adjacent second limiting columns (8); A trigger component is arranged on the fixing plate (2), and is used to trigger all of the gas storage devices (6) when the tripod (101) is tipped over.

2. A portable geographic information surveying and mapping instrument according to claim 1, characterized in that: The trigger component comprises: A connecting frame (9) is fixedly connected to the lower side of the fixing plate (2), and the mounting plate (1) is provided with a through hole for the connecting frame (9) to pass through; A movable rod (10) is ball-connected to the lower end of the connecting frame (9); the movable rod (10) is limitedly slidably connected to a connecting shell (11); the connecting shell (11) is slidably connected to the connecting frame (9); a latch is provided between the connecting shell (11) and the connecting frame (9) for connecting the two; An elastic liquid sac (12), the lower part of the connecting frame (9) being fixedly connected to a connecting rod, the elastic liquid sac (12) being arranged on the connecting rod of the connecting frame (9), and the moving rod (10) being used to squeeze the elastic liquid sac (12); a first liquid storage shell (13) fixedly connected to the connecting frame (9); the first liquid storage shell (13) is connected to the elastic liquid bag (12) via a hose; a first one-way valve is provided on the hose of the elastic liquid bag (12); and the first liquid storage shell (13) is slidably connected to a first piston rod (14); A limit plate (15) is slidably connected to the connecting frame (9), and the first piston rod (14) is fixedly connected to the limit plate (15).

3. A portable geographic information surveying and mapping instrument according to claim 2, characterized in that: A weight ball is fixedly connected to the lower end of the moving rod (10), and the center of gravity of the two is located on the weight ball of the moving rod (10).

4. A portable geographic information surveying and mapping instrument according to claim 2, characterized in that: The trigger component also includes: L-shaped plates (16), the number of which is the same as the number of the guard plates (4); the fixed plate (2) is provided with storage holes, the number of which is the same as the number of the guard plates (4); the L-shaped plates (16) are slidably connected to adjacent storage holes on the fixed plate (2); the L-shaped plates (16) are used to limit the adjacent first limiting columns (7); and a tension spring is provided between the L-shaped plates (16) and the fixed plate (2); An elastic electrode sheet (18) is fixedly connected to one of the storage holes on the fixed plate (2); a fixed electrode sheet electrically connected to the elastic electrode sheet (18) is fixedly connected to the storage hole; the L-shaped plate (16) is used to press the elastic electrode sheet (18) so that the elastic electrode sheet (18) contacts the fixed electrode sheet; and all of the gas storage devices (6) are electrically connected to the elastic electrode sheet (18).

5. A portable geographic information surveying and mapping instrument according to claim 4, characterized in that: The guard plate (4) is slidably connected to a push plate (19), the push plate (19) is in contact with the airbag (5), the push plate (19) is fixedly connected to a sealing plate (20) via an arc rod, the sealing plate (20) slides on the adjacent guard plate (4), and a connecting groove (21) is provided on a side of the guard plate (4) away from the sealing plate (20) thereon, which is capable of sliding the sealing plate (20) on the adjacent guard plate (4).

6. A portable geographic information surveying and mapping instrument according to claim 5, characterized in that: There is damping between the arc-shaped rod on the push plate (19) and the adjacent guard plate (4), which is used to increase the resistance encountered by the push plate (19) when it moves, thereby preventing the push plate (19) from moving due to vibration.

7. The portable geographic information surveying and mapping instrument according to claim 5, characterized in that: Also included are: The number of movable plates (221) is the same as that of the guard plates (4); the guard plates (4) are provided with a storage cavity (22); the movable plates (221) are slidably connected in the storage cavity (22); and a first spring is provided between the movable plates (221) and the guard plates (4); The number of fixing members (222) is the same as that of the movable plate (221), and they are fixedly connected to the movable plate (221). The fixing members (222) are located in the storage cavity (22). The outer side of the guard plate (4) is slidably connected to a limiting block (23). The limiting block (23) is used to limit the position of adjacent fixing members (222). A second spring is fixedly connected between the limiting block (23) and the adjacent guard plate (4); An unlocking component is arranged on the fixing plate (2), and is used to change the positions of all the limit blocks (23).

8. A portable geographic information surveying and mapping instrument according to claim 7, characterized in that: The unlocking component comprises: A second liquid storage shell (25) is fixedly connected to the connecting frame (9), and a second piston rod (26) is slidably connected inside the second liquid storage shell (25); A connecting plate (27) slidably connected to the connecting frame (9), the connecting plate (27) being fixedly connected to the second piston rod (26), and the connecting plate (27) being located below the limiting plate (15); The number of connecting ropes (28) is the same as the number of the guard plates (4), and both are fixedly connected to the connecting plate (27); the connecting ropes (28) are fixedly connected to the adjacent limiting blocks (23); A transmission component is arranged on the connecting frame (9), and the transmission component is used to detect the working environment of the total station (3).

9. A portable geographic information surveying and mapping instrument according to claim 8, characterized in that: The transmission assembly comprises: The intermediate transfer shell (29) is fixedly connected to the connecting frame (9); the first liquid storage shell (13) and the second liquid storage shell (25) are both fixedly connected to the intermediate transfer shell (29); the second liquid storage shell (25) is connected to the intermediate transfer shell (29) via a hose; the intermediate transfer shell (29) is connected to the hose of the elastic liquid sac (12); and a second one-way valve is provided between the intermediate transfer shell (29) and the hose of the elastic liquid sac (12).

10. The portable geographic information surveying and mapping instrument according to claim 9, characterized in that: The transmission assembly also includes: A moving shell (30) located inside the transfer shell (29); There are three connecting rods (31), all of which are slidably connected to the transfer shell (29), the connecting rods (31) are fixedly connected to the moving shell (30), and the connecting rods (31) are fixedly connected to the adjacent legs of the tripod (101) via elastic ropes; A blocking block (34) is slidably connected inside the movable shell (30), a third spring being fixedly connected between the blocking block (34) and the movable shell (30), and the blocking block (34) is used to block the connection between the second liquid storage shell (25) and the transfer shell (29).

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