Leveling device based on GNSS (Global Navigation Satellite System)

Abstract

The utility model provides a leveling device based on a GNSS (Global Navigation Satellite System), belonging to the technical field of leveling. The device comprises a mounting seat, a fixing seat, a level gauge, a leveling rod and positioning assemblies, the level gauge and the leveling rod are arranged on the fixing seat at intervals, the positioning assemblies are arranged on the fixing seat and are in signal connection with an observation station, and the fixing assemblies are arranged on the two opposite sides of the bottom of the fixing seat and comprise fixing blocks and push-pull rods. The fixing block is arranged at the bottom of the fixing base, a sliding hole in the horizontal direction is formed in the fixing block, the push-pull rods penetrate through the sliding hole, the two push-pull rods abut against the two sides of the mounting base respectively, and the sliding holes of the two fixing assemblies are oppositely formed. By adopting the leveling device based on the GNSS provided by the embodiment of the utility model, the problems of low operation portability and low measurement efficiency in the prior art can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of leveling measurement, and particularly relates to a leveling measurement device based on GNSS. Background Technique

[0002] As a high-precision elevation observation method, leveling measurement is widely used in professional fields such as geodetic surveying and engineering surveying. Leveling measurement, also known as "geometric leveling measurement", is a method of measuring the height difference between two points on the ground with a level and a leveling staff. A level is placed between two points on the ground, and the leveling staffs erected at the two points are observed, and the height difference between the two points is calculated according to the readings on the staffs. Usually starting from the leveling origin or any known elevation point, the elevations of each point are measured station by station along the selected leveling route.

[0003] In the prior art, when performing leveling measurement, it is usually necessary for the surveyor to carry the level and the leveling staff between two measurement points, and in order to ensure the accuracy of the data, it is usually also necessary to interchange the positions of the leveling staff and the level mirror to obtain the front and back staff data respectively and complete the round-trip leveling measurement.

[0004] The leveling measurement method in the prior art usually requires manual handling of equipment, and in order to perform round-trip measurement, it is necessary to carry the level and the leveling staff back and forth, resulting in low operation portability and low measurement efficiency. Content of the Utility Model

[0005] An embodiment of the utility model provides a leveling measurement device based on GNSS, which can solve the problems of low operation portability and low measurement efficiency in the prior art. The technical solution is as follows:

[0006] A leveling measurement device based on GNSS includes a mounting base, a fixing base, a level, a leveling staff and a positioning component.

[0007] The fixing base is of a square structure, the level and the leveling staff are arranged at intervals on the fixing base, the positioning component is arranged on the fixing base, the positioning component is in signal connection with the observation station, a fixing component is arranged at the bottom of the fixing base, and the fixing component is used to fix the fixing base on the mounting base. The level and the leveling staff are configured to be adjustable in the relative position along the width direction of the fixing base.

[0008] Optionally, the level and the leveling staff are respectively arranged at both ends of the fixing base along the length direction. A first chute with a lateral opening is arranged at one end of the fixing base close to the level. The first chute is arranged along the width direction of the fixing base. A first slider is arranged in the first chute, and the first slider is slidably arranged in the first chute. The level is connected with the first slider.

[0009] Optionally, a limiting bump is arranged in the first sliding groove. The limiting bump protrudes from the top to the bottom or from the bottom to the top of the first sliding groove. Limiting grooves matching the limiting bump are arranged at the top and bottom of the first slider.

[0010] Optionally, a limiting bolt is further included. A plurality of threaded holes matching the limiting bolt are formed in the top of the fixed seat. The threaded holes are arranged above the first sliding groove, and the plurality of threaded holes are evenly spaced along the direction of the first sliding groove. A limiting hole matching the limiting bolt is arranged in the limiting groove.

[0011] Optionally, the limiting bump protruding from the top to the bottom of the first sliding groove is of a waveform structure. Its wave trough is located below the threaded hole, and its wave peak is located between two adjacent threaded holes. An installation hole is formed below the limiting hole. A first spring and a limiting column are arranged in the installation hole. The limiting column is connected to the bottom of the installation hole through the first spring.

[0012] Optionally, a lifting assembly is further included. The lifting assembly includes a fixed cylinder, a protection bracket, and a lifting mechanism. The fixed cylinder is connected to the fixed seat. The fixed cylinder is a tubular structure with an upward opening. The level, the protection bracket, and the lifting mechanism are all arranged in the fixed cylinder. The lifting mechanism is arranged at the bottom of the level and is used to drive the level to move up and down. The protection bracket is of a portal structure and is erected on the level.

[0013] Optionally, a fixed groove is formed in one side of the fixed seat. A movable seat is arranged in the fixed groove. The movable seat is slidably arranged in the fixed groove along the width direction of the fixed seat. The leveling staff is connected to the fixed seat through the movable seat. A limiting protrusion is fixedly arranged on the groove wall of the fixed groove. A second sliding groove arranged along the width direction of the fixed seat is arranged in the movable seat. The limiting protrusion is slidably arranged in the second sliding groove.

[0014] Optionally, a leveling staff quick-change assembly is further included. The leveling staff is connected to the movable seat through the leveling staff quick-change assembly. The leveling staff quick-change assembly is used to control the connection or separation of the leveling staff and the movable seat.

[0015] Optionally, a second slider is fixedly arranged on the leveling staff quick-change assembly. A third sliding groove arranged along the width direction of the fixed seat is arranged on the movable seat. The second slider is slidably arranged in the third sliding groove.

[0016] Optionally, the fixing component includes a fixing block and a push-pull rod. The fixing block is arranged at the bottom of the fixing seat. A sliding hole extending in the horizontal direction is formed in the fixing block. The push-pull rod is inserted into the sliding hole. The two push-pull rods are respectively abutted against both sides of the mounting seat. The sliding holes of the two fixing components are arranged oppositely. A lifting rod is arranged on the fixing seat. The bottom of the lifting rod is abutted against the top of the mounting seat. A trough-shaped block with an opening facing the push-pull rod is arranged between the push-pull rod and the mounting seat. The end of the push-pull rod is slidably arranged in the trough-shaped block in the vertical direction. The end of the push-pull rod is abutted against the bottom of the trough of the trough-shaped block. The trough-shaped block is abutted against the side surface of the mounting seat. A horizontal support block is arranged at the bottom of the trough-shaped block. The support block is abutted against the bottom of the mounting seat.

[0017] The beneficial effects brought by the technical solution provided by the embodiment of the present utility model at least include:

[0018] A GNSS-based leveling measurement device provided by an embodiment of the present utility model. The mounting seat is located on a moving vehicle. After placing the fixing seat on the mounting seat, by pushing the push-pull rod to slide on the sliding hole, the end of the push-pull rod is abutted against the side surface of the mounting seat, so as to fix the fixing seat on the mounting seat. In this way, the two leveling measurement devices in this embodiment are respectively installed on the mounting seats of two moving vehicles through the fixing components, and the two devices are respectively arranged at the first measurement point and the second measurement point for measuring the level. By using the level on the device at the first measurement point to measure the leveling staff on the device at the second measurement point, and using the level on the device at the second measurement point to measure the leveling staff on the device at the first measurement point, the front and back staff data at the first measurement point and the second measurement point can be obtained simultaneously. And through the movement of the moving vehicle, the device can move between the first measurement point and the second measurement point and then measure the front and back staff data, without manually carrying the level and the leveling staff. By setting the positioning component, satellite signals can be obtained, and differential correction data can be provided for the measurement data at the first measurement point and the second measurement point, improving the positioning accuracy of the measurement points. By setting the leveling measurement device in this embodiment, the measurement preparation time is shortened, the measurement efficiency is improved, and the problems of low operation portability and low measurement efficiency in the prior art can be effectively solved. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 is the overall structural schematic diagram provided by the embodiment of the present utility model;

[0021] Figure 2 is the overall structural schematic diagram when the movable seat pops out provided by the embodiment of the present utility model;

[0022] Figure 3 is the structural schematic diagram of one side of the movable seat provided by the embodiment of the present utility model;

[0023] Figure 4 is the structural schematic diagram of the other side of the movable seat provided by the embodiment of the present utility model;

[0024] Figure 5 is the structural schematic diagram of the leveling staff quick-change assembly provided by the embodiment of the present utility model;

[0025] Figure 6 is the structural schematic diagram of the second bracket provided by the embodiment of the present utility model;

[0026] Figure 7 is the structural schematic diagram of the lifting assembly provided by the embodiment of the present utility model;

[0027] Figure 8 is the structural schematic diagram of the cooperation between the fixed seat and the mounting seat provided by the embodiment of the present utility model;

[0028] Figure 9 is the structural schematic diagram of the limiting assembly provided by the embodiment of the present utility model;

[0029] Figure 10 is provided by the embodiment of the present utility model Figure 2 Schematic diagram of the slidable state of the first slider at A-A;

[0030] Figure 11 is provided by the embodiment of the present utility model Figure 2 Schematic diagram of the temporary limiting state of the first slider at A-A;

[0031] Figure 12 is provided by the embodiment of the present utility model Figure 2 Schematic diagram of the stable limiting state of the first slider at A-A.

[0032] In the figure: 101 - mounting base; 1 - fixing base; 11 - first chute; 111 - limiting convex block; 12 - first slider; 121 - limiting groove; 1211 - limiting hole; 1212 - mounting hole; 1213 - first spring; 1214 - limiting post; 13 - limiting bolt; 14 - threaded hole; 15 - fixing groove; 151 - limiting protrusion; 152 - spring fixing post; 16 - buzzer alarm; 2 - level; 3 - leveling staff; 31 - first jack; 4 - positioning component; 5 - fixing component; 51 - fixing block; 511 - sliding hole; 52 - push-pull rod; 53 - grooved block; 54 - support block; 6 - lifting component; 61 - fixing cylinder; 611 - fourth chute; 612 - second spring; 62 - protection bracket; 621 - connecting block; 63 - lifting mechanism; 631 - rotating motor; 632 - screw rod; 633 - nut sleeve; 7 - movable seat; 71 - second chute; 72 - third chute; 73 - third spring; 74 - fixing hole; 8 - leveling staff quick-change component; 81 - second slider; 82 - first bracket; 821 - first pin; 83 - second bracket; 831 - second pin; 832 - second jack; 9 - lifting rod; 91 - limiting component; 911 - limiting rod; 912 - connecting sleeve; 913 - fixing pipe; 914 - rotating shaft; 915 - return spring. Detailed implementation manners

[0033] To make the objectives, technical solutions and advantages of the present utility model clearer, the following will further describe in detail the embodiments of the present utility model in conjunction with the attached drawings.

[0034] Figure 1 is the overall structure schematic diagram provided by an embodiment of the present utility model; Figure 2 is the overall structure schematic diagram when the movable seat pops out provided by an embodiment of the present utility model; Figure 3 is the schematic diagram of one side structure of the movable seat provided by an embodiment of the present utility model; Figure 4 is the schematic diagram of the other side structure of the movable seat provided by an embodiment of the present utility model; Figure 5 is the schematic diagram of the leveling staff quick-change component structure provided by an embodiment of the present utility model; Figure 6 is the schematic diagram of the second bracket structure provided by an embodiment of the present utility model; Figure 7 is the schematic diagram of the lifting component structure provided by an embodiment of the present utility model; Figure 8 is the schematic diagram of the cooperation structure between the fixing base and the mounting base provided by an embodiment of the present utility model; Figure 9 is the schematic diagram of the limiting component structure provided by an embodiment of the present utility model; Figure 10 is provided by an embodiment of the present utility model Figure 2 Schematic diagram of the slidable state of the first slider at A-A; Figure 11 is provided by an embodiment of the present utility model Figure 2 Schematic diagram of the short-term limiting state of the first slider at A-A;Figure 12 This is provided by an embodiment of the present utility model Figure 2 Schematic diagram of the stable limiting state of the first slider at A-A. As Figures 1 to 12 shown, a GNSS-based leveling device includes: a mounting base 101, a fixed base 1, a level 2, a leveling staff 3, and a positioning component 4. The fixed base 1 has a square structure. The level 2 and the leveling staff 3 are arranged at intervals on the fixed base 1. The positioning component 4 is provided on the fixed base 1. The positioning component 4 is signal-connected to the observation station. Fixing components 5 are provided on opposite sides of the bottom of the fixed base 1. The fixing components 5 are used to fix the fixed base 1 on the mounting base 101. The level 2 and the leveling staff 3 are configured to be adjustable in relative position along the width direction of the fixed base 1.

[0035] Exemplarily, in the embodiment of the present utility model, GNSS (Global Navigation Satellite System), that is, the global navigation satellite system, the positioning component 4 is used to obtain positioning data from GNSS. The positioning component 4 is equivalent to the data processing center of the entire measurement system, and is specifically responsible for receiving and packing satellite signals (such as information such as satellite numbers and device numbers), and then uploading these data to the server in real time. The positioning component 4 is signal-connected to the first observation station and the second observation station. When the first observation station and the second observation station use the same set of satellite signals, the positioning component 4 will calculate a more accurate correction value by comparing the differences between the two stations (i.e., the differential items), and finally improve the positioning accuracy. For example, when moving and measuring between the first observation point and the second observation point, this correction can ensure the accuracy of the level measurement. The first observation station and the second observation station (reference station) respectively provide differential correction data for the first observation point and the second observation point (measurement point), so as to improve the positioning accuracy of the measurement point. The moving measurement of the first observation point and the second observation point requires the static data support of the first observation station and the second observation station, forming a classic differential positioning mode of "reference station + mobile station". The fixing component 5 includes a fixing block 51 and a push rod 52. The fixing block 51 is arranged at the bottom of the fixing seat 1. A sliding hole 511 is formed in the fixing block 51 along the horizontal direction. The push rod 52 is inserted through the sliding hole 511. The two push rods 52 respectively abut against both sides of the mounting seat 101, and the sliding holes 511 of the two fixing components 5 are arranged oppositely. A buzzer alarm 16 is further arranged on the fixing seat 1. A pressure sensor is arranged between the push rod 52 and the mounting seat 101. When the pressure sensor detects that the pressure between the push rod 52 and the mounting seat 101 is too small, it transmits a signal to the buzzer alarm 16, and the alarm sound reminds the operator that the device is not firmly installed on the mounting seat 101.In this embodiment, the mounting base 101 can be the rear seat of an electric vehicle or a bicycle. When leveling measurements need to be taken at the first measurement point and the second measurement point, this leveling measurement device is provided at both the first measurement point and the second measurement point. The fixed base 1 is placed on the mounting base 101. The fixing blocks 51 are vertically arranged on both sides of the bottom of the fixed base 1 and provide structural support for the sliding holes 511. By adjusting the push-pull rod 52, its end is made to abut against the side surface of the mounting base 101. By increasing the pressure between the push-pull rod 52 and the mounting base 101, the fixed base 1 and the mounting base 101 are fixed together. By adjusting the relative positions of this device at the first measurement point and the second measurement point, the level 2 at the first measurement point is aligned with the leveling staff 3 at the second measurement point for measurement, and the level 2 at the second measurement point is aligned with the leveling staff 3 at the first measurement point for measurement. In this way, the leveling data based on the first measurement point and the leveling data based on the second measurement point can be obtained simultaneously. Compared with the leveling measurement device in the traditional technology, which requires manual transportation of the level and the leveling staff back and forth, in this embodiment, by arranging the level 2 and the leveling staff 3 on the mounting base 101, it is convenient to move, and the leveling data of the front and back staffs can be read simultaneously, greatly improving the measurement efficiency.

[0036] A GNSS-based leveling measurement device provided in an embodiment of the present invention. The mounting base 101 is located on a moving vehicle. After the fixed base 1 is placed on the mounting base 101, by pushing the push-pull rod 52 to slide on the sliding hole 511, the end of the push-pull rod 52 is made to abut against the side surface of the mounting base 101, thereby fixing the fixed base 1 on the mounting base 101. In this way, the two leveling measurement devices in this embodiment are respectively installed on the mounting bases of two moving vehicles through the fixing components 5, and the two devices are respectively arranged at the first measurement point and the second measurement point for leveling measurement. The level 2 on this device at the first measurement point measures the leveling staff 3 on this device at the second measurement point, and the level 2 on this device at the second measurement point measures the leveling staff 3 on this device at the first measurement point. In this way, the front and back staff data at the first measurement point and the second measurement point can be obtained simultaneously. And through the movement of the moving vehicle, this device can be moved between the first measurement point and the second measurement point and then measure the front and back staff data without manual transportation of the level 2 and the leveling staff 3. By setting the positioning component 4, satellite signals can be obtained, and differential correction data can be provided for the measurement data at the first measurement point and the second measurement point, improving the positioning accuracy of the measurement points. By setting the leveling measurement device in this embodiment, the measurement preparation time is shortened, the measurement efficiency is improved, and the problems of low operation portability and low measurement efficiency in the existing technology can be effectively solved.

[0037] Optionally, the level 2 and the leveling staff 3 are respectively arranged at both ends of the fixed seat 1 along the length direction. One end of the fixed seat 1 close to the level 2 is provided with a first chute 11 with a lateral opening. The first chute 11 is arranged along the width direction of the fixed seat 1. A first slider 12 is arranged in the first chute 11. The first slider 12 is slidably arranged in the first chute 11, and the level 2 is connected to the first slider 12.

[0038] Exemplarily, in the embodiment of the present invention, as Figure 1 and Figure 2 shown, in this embodiment, the first slider 12 can be in a long rod-shaped structure, so as to increase the contact area with the first chute 11, thereby improving the stability of the device. By arranging the first chute 11 and the first slider 12 to cooperate and slide, and connecting the level 2 with the first slider 12, the level 2 can slide along the direction of the first chute 11, so that the position of the level 2 along the width direction of the fixed seat 1 can be adjusted, thereby facilitating the dislocation of the level 2 from the leveling staff 3 on this device. When reading the leveling staff 3 at another measurement point, it can prevent the leveling staff 3 at this measurement point from blocking the level 2 and making it impossible to read. By arranging this structure, the movement freedom of the level 2 is improved, and the operation convenience of this device is also improved.

[0039] Optionally, a limiting convex block 111 is arranged in the first chute 11. The limiting convex block 111 protrudes from the top to the bottom of the first chute 11 or protrudes from the bottom to the top of the first chute 11. Limiting grooves 121 matching the limiting convex block 111 are arranged at the top and bottom of the first slider 12.

[0040] Exemplarily, in the embodiment of the present invention, as Figure 1 and Figure 2 shown, by arranging the cooperation of the limiting convex block 111 and the limiting grooves 121, a guiding effect can be provided for the sliding of the first slider 12 in the first chute 11, preventing the first slider 12 from falling off from the end of the fixed seat 1. By arranging this structure, the stability of this device is improved.

[0041] Optionally, it further includes a limiting bolt 13. A plurality of threaded holes 14 matching the limiting bolt 13 are formed in the top of the fixed seat 1. The threaded holes 14 are arranged above the first chute 11, and the plurality of threaded holes 14 are evenly spaced along the direction of the first chute 11. A limiting hole 1211 matching the limiting bolt 13 is arranged in the limiting groove 121.

[0042] Exemplarily, in the embodiment of the present invention, as Figure 1 and Figure 12As shown in the figure, three threaded holes 14 are provided on the fixed base 1. After the first slider 12 slides to a suitable position, in order to prevent the level 2 from sliding during the measurement process, a limit bolt 13 is provided in the threaded hole 14. The bottom of the limit bolt 13 is limited by the side wall of the limit hole 1211, which can limit the sliding of the first slider 12 in the first chute 11, thereby fixing the position of the level 2. By setting this structure, the operation convenience of the device is further improved.

[0043] Optionally, the limit bump 111 protruding from the top to the bottom of the first chute 11 is a waveform structure, the wave trough of which is located below the threaded hole 14, and the wave crest is located between two adjacent threaded holes 14. An installation hole 1212 is provided below the limit hole 1211, and a first spring 1213 and a limit post 1214 are provided in the installation hole 1212. The limit post 1214 is connected to the bottom of the installation hole 1212 through the first spring 1213.

[0044] Exemplarily, in the embodiment of the present utility model, as Figure 10 shown, at this time the limit post 1214 is located at the wave crest of the limit bump 111, and the first spring 1213 is in a compressed state. At this time, when the first slider 12 is dragged in the first chute 11, the first slider 12 is still in a slidable state and can move smoothly in the first chute 11. When the first slider 12 is continuously dragged, when the limit post 1214 is located at the wave trough of the limit bump 111, as Figure 11 shown, the wave trough and the threaded hole 14 form a passage. Under the elastic force of the first spring 1213, the limit post 1214 moves into the threaded hole 14. At this time, the first slider 12 is locked in the first chute 11 and cannot continue to slide, being in a temporary limit state, as Figure 12 shown. At this time, the limit bolt 13 is inserted into the threaded hole 14 having the limit post 1214. After tightening the limit bolt 13, the first spring 1213 is further compressed, so that the limit post 1214 is completely pressed into the installation hole 1212, and the limit bolt 13 can limit the movement of the first slider 12 with the side wall of the limit hole 1211, thereby forming a stable limit state. By setting this structure, when the first slider 12 slides in the first chute 11, the limit post 1214 and the limit bump 111 cooperate to achieve frictional movement and can enter a temporary limit state, which can realize the quick limit of the first slider 12, thereby further improving the operation convenience of the device. In the actual practical process, the horizontal distance between the wave crest and the wave trough of the limit bump 111 can be designed according to the actual situation, so as to realize the temporary limit of different distances of the first slider 12.

[0045] Optionally, it further includes a lifting assembly 6. The lifting assembly 6 includes a fixed cylinder 61, a protective bracket 62, and a lifting mechanism 63. The fixed cylinder 61 is connected to the fixed seat 1. The fixed cylinder 61 is a tubular structure with an upward opening. The level 2, the protective bracket 62, and the lifting mechanism 63 are all arranged inside the fixed cylinder 61. The lifting mechanism 63 is arranged at the bottom of the level 2 and is used to drive the level 2 to move up and down. The protective bracket 62 is a portal structure and is erected on the level 2.

[0046] Exemplarily, in the embodiment of the present invention, as Figure 7 shown, the lifting mechanism 63 includes a rotary motor 631, a screw 632, and a nut sleeve 633. The rotating shaft of the motor 631 is arranged vertically upward. The screw 632 is fixedly connected to the rotating shaft of the motor 631. The nut sleeve 633 is fixedly arranged at the bottom of the level 2. The screw 632 passes through the nut sleeve 633. The protective bracket 62 is a portal structure. Connecting blocks 621 are arranged on the two side plates of the protective bracket 62. A fourth chute 611 in the vertical direction is arranged on the inner wall of the fixed cylinder 61. A second spring 612 is arranged in the fourth chute 611. The bottom end of the second spring 612 is connected to the connecting block 621, and the top end of the second spring 612 is connected to the top wall of the fourth chute 611. When the level 2 needs to work, start the rotary motor 631 to rotate, which drives the screw 632 to rotate, drives the nut sleeve 633 to move upward on the screw 632, thereby driving the level 2 to move upward, driving the protective bracket 62 to move upward together. At this time, the connecting block 621 also moves upward along the fourth chute 611 and compresses the second spring 612, so that the protective bracket 62 is closely attached to the top of the level 2. Thus, when the level 2 is in the working state, the protective bracket 62 can be closely attached to the level 2 to provide physical protection for the level 2. When the work of the level 2 is completed, reverse drive the rotary motor 631 to make the level 2 return to the fixed cylinder 61 to provide physical protection for the level 2 and prevent the level 2 from colliding during transportation, thereby improving the service life of the level 2 and further improving the stability of the device.

[0047] Optionally, a fixed groove 15 is formed on one side of the fixed seat 1. A movable seat 7 is arranged in the fixed groove 15. The movable seat 7 is slidably arranged in the fixed groove 15 along the width direction of the fixed seat 1. The leveling staff 3 is connected to the fixed seat 1 through the movable seat 7. A limiting protrusion 151 is fixedly arranged on the groove wall of the fixed groove 15. A second chute 71 arranged along the width direction of the fixed seat 1 is arranged in the movable seat 7. The limiting protrusion 151 is slidably arranged in the second chute 71.

[0048] Exemplarily, in the embodiment of the present invention, as Figure 2 and Figure 3As shown, the fixing groove 15 is opened along the width direction of the fixing base 1. By providing the limiting protrusion 151 and the second sliding groove 71, the movable seat 7 can carry the leveling staff 3 to move horizontally, thereby adjusting the horizontal position of the leveling staff 3, so as to stagger the positions of the level 2 and the leveling staff 3, preventing interference during the measurement of leveling data and making it impossible to read the data. This improves the freedom of movement of the leveling staff 3 and further enhances the operational convenience of this device. A third spring 73 can also be provided in the second sliding groove 71, and a spring fixing post 152 is provided in the fixing groove 15. The spring fixing post 152 is arranged along the length direction of the fixing base 1 and can move telescopically along its length direction. A fixing hole 74 matching the spring fixing post 152 is provided on the movable seat 7. When the leveling staff 3 is in a non-working state, through the cooperation of the spring fixing post 152 and the fixing hole 74, the movable seat 7 is located in the fixing groove 15, and at this time the third spring 73 is in the maximum compressed state. When the leveling staff 3 needs to work, the restraint of the spring fixing post 152 on the movable seat 7 is released, so that the movable seat 7 can quickly pop out of the fixing groove 15. By providing this structure, the movable seat 7 can be in two states of being stored and popped out, and can also be quickly switched between these two states, thereby further enhancing the operational convenience of this device.

[0049] Optionally, it further includes a leveling staff quick-change assembly 8. The leveling staff 3 is connected to the movable seat 7 through the leveling staff quick-change assembly 8, and the leveling staff quick-change assembly 8 is used to control the connection or separation of the leveling staff 3 and the movable seat 7.

[0050] Exemplarily, in the embodiment of the present utility model, as Figure 5As shown, the leveling staff quick-change assembly 8 includes a first bracket 82 and a second bracket 83. Both the first bracket 82 and the second bracket 83 are L-shaped brackets. The first bracket 82 and the second bracket 83 are reversely buckled and combined to form a frame structure, and the leveling staff 3 is located in the middle of the frame structure. A first pin 821 is provided on the first bracket 82. The leveling staff 3 is located between the vertical plate of the first bracket 82 and the first pin 821. On one side of the top of the second bracket 83 close to the leveling staff 3, a second pin 831 is provided. On the top of the leveling staff 3, a first jack 31 matching the second pin 831 is provided. At the bottom of the vertical plate of the second bracket 83, a second jack 832 matching the first pin 821 is provided. After placing the leveling staff 3 on the first bracket 82, then reversely buckle the second bracket 83 on the leveling staff 3, so that the first pin 821 cooperates with the second jack 832, and the second pin 831 cooperates with the first jack 31. At this time, the leveling staff 3 is stably fixed on the leveling staff quick-change assembly 8. When the leveling staff 3 needs to be replaced, only need to pick up the second bracket 83, then the jacks and pins can be disengaged, losing the limiting effect, and the leveling staff 3 can be easily taken out. In the actual application process, after the leveling staff 3 is exposed to the outside and used for a period of time, it will be worn, resulting in a decrease in the measurement accuracy. By setting this structure, the leveling staff 3 can be quickly fixed and disassembled, further improving the operation convenience of the device.

[0051] Optionally, a second slider 81 is fixedly provided on the leveling staff quick-change assembly 8. A third chute 72 arranged along the width direction of the fixed seat 1 is provided on the movable seat 7. The second slider 81 is slidably arranged in the third chute 72.

[0052] Exemplarily, in the embodiment of the present utility model, as Figure 4 shown, by setting the second slider 81 and the third chute 72, the leveling staff 3 can slide along the width direction of the fixed seat 1, so as to adjust the horizontal position of the leveling staff 3, which is convenient for the device at another measurement point to perform reading measurement, thereby further improving the moving freedom of the leveling staff 3 and also further improving the operation convenience of the device.

[0053] Optionally, the fixing component 5 includes a fixing block 51 and a push-pull rod 52. The fixing block 51 is arranged at the bottom of the fixing seat 1. A sliding hole 511 extending in the horizontal direction is formed in the fixing block 51. The push-pull rod 52 is inserted into the sliding hole 511. The two push-pull rods 52 are respectively abutted against both sides of the mounting seat 101. The sliding holes 511 of the two fixing components 5 are arranged oppositely. A lifting rod 9 is arranged on the fixing seat 1. The bottom of the lifting rod 9 is abutted against the top of the mounting seat 101. A groove-shaped block 53 with an opening facing the push-pull rod 52 is arranged between the push-pull rod 52 and the mounting seat 101. The end of the push-pull rod 52 is slidably arranged in the groove-shaped block 53 in the vertical direction. The end of the push-pull rod 52 is abutted against the bottom of the groove of the groove-shaped block 53. The groove-shaped block 53 is abutted against the side surface of the mounting seat 101. A horizontal support block 54 is arranged at the bottom of the groove-shaped block 53. The support block 54 is abutted against the bottom of the mounting seat 101.

[0054] Exemplarily, in the embodiment of the present invention, as Figure 8 and Figure 9As shown, the support block 54 and the grooved block 53 form a right-angled structure. When installing the fixed seat 1 on the mounting seat 101, the bottom of the mounting seat 101 is attached to and limited by the right-angled structure. At this time, the lifting rod 9 is adjusted to extend, and the bottom of the lifting rod 9 abuts against the top of the mounting seat 101, so that the distance between the fixed seat 1 and the mounting seat 101 becomes larger, and the end of the push-pull rod 52 slides in the grooved block 53, thereby adjusting the overall height of the fixed seat 1, and then adjusting the heights of the level 2 and the leveling staff 3, which is convenient for data measurement. As shown in the figure, a limiting component 91 is also provided at the bottom of the lifting rod 9. The limiting component 91 includes a limiting rod 911, a connecting sleeve 912, a fixed tube 913, a rotating shaft 914 and a return spring 915. The return spring 915 is a spiral torsion spring, coaxially sleeved outside the rotating shaft 914 and completely accommodated inside the fixed tube 913. One end of the return spring 915 is positioned by a positioning protrusion embedded in the inner wall of the connecting sleeve 912 through a card slot, and the other end is fixed to the circumferential groove of the rotating shaft 914 through a pin. When the lifting rod 9 executes its stroke, the limiting rod 911 drives the connecting sleeve 912 to move axially, forcing the fixed tube 913 and the rotating shaft 914 to rotate relative to each other (the end of the rotating shaft 914 is fixedly connected to the frame of the lifting rod 9). During this process, the rotating shaft 914 applies torsional deformation to the return spring 915, and the spiral pitch of the return spring 915 is compressed to store energy; when the external force is removed, the return spring 915 drives the rotating shaft 914 to rotate in the reverse direction by releasing the stored elastic potential energy, driving the connecting sleeve 912 to accurately return to the initial angular position. Guide ribs are provided on the inner wall of the fixed tube 913 to ensure that the return spring 915 does not deviate radially during the torsion process, and at the same time limit the maximum torsion angle not to exceed the elastic limit of the return spring 915. This structure can achieve precise setting of the initial torque of the return spring 915 through a pre-tightening adjustment bolt. By setting this structure, when the lifting rod 9 descends, it pushes the limiting rod 911 to tilt, and the limiting rod 911 contacts the mounting seat 101 when tilted. On the one hand, the contact area with the mounting seat 101 is increased according to the tilt degree of the limiting rod 911, and on the other hand, the limiting rod 911 is adjusted and extruded according to the different shapes of the mounting seat 101, thereby further improving the stability of the device.

[0055] Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meanings as understood by those of ordinary skill in the art to which this utility model pertains. The terms "first", "second" and similar terms used in the description and claims of this utility model patent application do not denote any order, quantity or importance, but are merely used to distinguish different components. Similarly, terms such as "a" or "an" do not denote a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" and similar terms mean that the elements or items appearing before "comprising" or "including" cover the elements or items listed after "comprising" or "including" and their equivalents, and do not exclude other elements or items. The terms "connected" or "coupled" and similar terms are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms "upper", "lower", "left", "right" etc. are only used to indicate relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationships may also change accordingly.

[0056] The above are only optional embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this utility model shall be included within the protection scope of this utility model.

Claims

1. A GNSS-based leveling device, comprising a mounting base (101), characterized in that, Including: A fixed base (1), a level (2), a leveling staff (3), and a positioning component (4). The fixed base (1) has a square structure. The level (2) and the leveling staff (3) are arranged at intervals along the length direction of the fixed base (1) on the fixed base (1). The positioning component (4) is arranged on the fixed base (1). The positioning component (4) is signal-connected to an observation station. A fixing component (5) is arranged at the bottom of the fixed base (1). The fixing component (5) is used to fix the fixed base (1) on the mounting base (101). The level (2) and the leveling staff (3) are configured to be adjustable in the relative position along the width direction of the fixed base (1).

2. The GNSS-based level measurement device according to claim 1, characterized in that, The level (2) and the leveling staff (3) are respectively arranged at both ends of the fixed base (1) along the length direction. A first chute (11) with a lateral opening is arranged at one end of the fixed base (1) close to the level (2). The first chute (11) is arranged along the width direction of the fixed base (1). A first slider (12) is arranged in the first chute (11). The first slider (12) is slidably arranged in the first chute (11). The level (2) is connected to the first slider (12).

3. The GNSS-based leveling device according to claim 2, wherein, A limiting convex block (111) is arranged in the first chute (11). The limiting convex block (111) protrudes from the top to the bottom of the first chute (11) or protrudes from the bottom to the top of the first chute (11). Limiting grooves (121) matching the limiting convex block (111) are arranged at the top and bottom of the first slider (12).

4. A GNSS-based leveling device according to claim 3, characterized in that, It further includes a limiting bolt (13). A plurality of threaded holes (14) matching the limiting bolt (13) are opened at the top of the fixed base (1). The threaded holes (14) are arranged above the first chute (11). The plurality of threaded holes (14) are evenly arranged at intervals along the direction of the first chute (11). Limiting holes (1211) matching the limiting bolt (13) are arranged in the limiting grooves (121).

5. The GNSS-based leveling device according to claim 4, wherein, The limiting convex block (111) protruding from the top to the bottom of the first chute (11) has a waveform structure. Its wave trough is located below the threaded hole (14), and its wave peak is located between two adjacent threaded holes (14). An installation hole (1212) is opened below the limiting hole (1211). A first spring (1213) and a limiting column (1214) are arranged in the installation hole (1212). The limiting column (1214) is connected to the bottom of the installation hole (1212) through the first spring (1213).

6. The GNSS-based leveling device according to claim 1, wherein, It further includes a lifting assembly (6), and the lifting assembly (6) includes a fixed cylinder (61), a protective bracket (62) and a lifting mechanism (63). The fixed cylinder (61) is connected to the fixed seat (1). The fixed cylinder (61) is a tubular structure with an upward opening. The level (2), the protective bracket (62) and the lifting mechanism (63) are all arranged inside the fixed cylinder (61). The lifting mechanism (63) is arranged at the bottom of the level (2) and is used to drive the level (2) to move up and down. The protective bracket (62) is in a portal structure and is erected on the level (2).

7. A GNSS-based leveling device according to claim 1, characterized in that, One side of the fixed seat (1) is provided with a fixed groove (15). An activity seat (7) is arranged inside the fixed groove (15). The activity seat (7) is slidably arranged inside the fixed groove (15) along the width direction of the fixed seat (1). The leveling staff (3) is connected to the fixed seat (1) through the activity seat (7). A limiting projection (151) is fixedly arranged on the groove wall of the fixed groove (15). A second chute (71) arranged along the width direction of the fixed seat (1) is arranged inside the activity seat (7). The limiting projection (151) is slidably arranged in the second chute (71).

8. The GNSS-based level measurement device according to claim 7, characterized in that, It further includes a leveling staff quick-change assembly (8). The leveling staff (3) is connected to the activity seat (7) through the leveling staff quick-change assembly (8). The leveling staff quick-change assembly (8) is used to control the connection or separation between the leveling staff (3) and the activity seat (7).

9. The GNSS-based leveling device according to claim 8, characterized in that, A second slider (81) is fixedly arranged on the leveling staff quick-change assembly (8). A third chute (72) arranged along the width direction of the fixed seat (1) is arranged on the activity seat (7). The second slider (81) is slidably arranged in the third chute (72).

10. The GNSS-based leveling device according to claim 1, characterized in that, The fixing assembly (5) includes a fixing block (51) and a push-pull rod (52). The fixing block (51) is arranged at the bottom of the fixed seat (1). A sliding hole (511) along the horizontal direction is opened on the fixing block (51). The push-pull rod (52) passes through the sliding hole (511). The two push-pull rods (52) are respectively abutted against the two sides of the mounting seat (101). The sliding holes (511) of the two fixing assemblies (5) are arranged oppositely. A lifting rod (9) is arranged on the fixed seat (1). The bottom of the lifting rod (9) is abutted against the top of the mounting seat (101). A trough-shaped block (53) with an opening facing the push-pull rod (52) is arranged between the push-pull rod (52) and the mounting seat (101). The end of the push-pull rod (52) is slidably arranged in the trough-shaped block (53) along the vertical direction. The end of the push-pull rod (52) is abutted against the bottom of the trough-shaped block (53). The trough-shaped block (53) is abutted against the side of the mounting seat (101). A horizontal support block (54) is arranged at the bottom of the trough-shaped block (53). The support block (54) is abutted against the bottom of the mounting seat (101).

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