Auxiliary calibration device for land surveying and mapping

Abstract

An auxiliary calibration device for land surveying and mapping disclosed by the present invention comprises a base and a calibration rod member, a driving gear and a plurality of first gears which are sequentially engaged are arranged in the base, one of the first gears is engaged with the driving gear, and reinforcing rods are arranged on the first gears. The first gear is used for driving the reinforcing rod to move in the vertical direction, the calibration rod piece is connected with the driving gear through threads, and a locking assembly used for limiting rotation of the driving gear and an unlocking assembly used for unlocking the locking assembly are further arranged in the base. When the calibration rod assembly stretches into the soil and encounters obstacles such as stones, the first gear can be driven to rotate through meshing of the arranged driving gear, so that the fixing rod stretches into the soil, it is guaranteed that the base can be stably fixed to the ground, and therefore the calibration rod piece can be stably fixed to the ground and prevented from toppling over.

Description

Technical Field

[0001] This invention relates to the field of land surveying technology, and more specifically to an auxiliary calibration device for land surveying. Background Technology

[0002] Land surveying and calibration devices are equipment used for fixed-point marking in land surveying. Their main function is to help surveyors accurately locate and mark land. With the development of technology, some modern surveying and calibration devices are also equipped with intelligent monitoring systems, which can monitor data changes in real time during the surveying process. They play an important role in land surveying, topographic surveying, engineering construction, land planning and other fields.

[0003] Most existing surveying markers consist of a single stake inserted into the ground. This means that if there are obstacles such as rocks below the marker's installation location, the obstacles will prevent the marker from being inserted deep into the soil, making it difficult to fix the marker stably on the ground. This can easily lead to the marker tipping over and affecting the subsequent measurement results. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art. The purpose is to provide an auxiliary calibration device for land surveying. When the calibration rod assembly encounters obstacles such as stones when it is inserted into the soil, the active gear can be engaged to drive the first gear to rotate, thereby extending the fixing rod into the soil and ensuring that the base can be stably fixed on the ground. This allows the calibration rod to be stably fixed on the ground and prevents it from tipping over.

[0005] This invention is achieved through the following technical solution:

[0006] An auxiliary calibration device for land surveying includes a base and a calibration rod. The base contains a drive gear and several sequentially meshing first gears, one of which meshes with the drive gear. Each of the first gears is equipped with a reinforcing rod. The first gear drives the reinforcing rod to move vertically. The calibration rod is connected to the drive gear by a thread. The base also contains a locking component for limiting the rotation of the drive gear and an unlocking component for unlocking the locking component.

[0007] Furthermore, the locking assembly includes a second gear and a rotating shaft, the driving gear or the first gear meshes with the second gear, the base has a first cavity inside, one end of the rotating shaft is located in the first cavity, and the other end is fixedly connected to the second gear;

[0008] The first cavity has a first blind hole on its inner wall and the rotating shaft has a second blind hole on its outer wall. The second blind hole has a limiting rod with an outer diameter that is the same as the inner diameter of the second blind hole and a first elastic element. The first elastic element is used to push the limiting rod into the first blind hole.

[0009] Furthermore, the unlocking component includes a movable disc and a negative pressure rod. The base also has a second cavity with an inner diameter that matches the outer diameter of the movable disc. A first channel with an inner diameter that matches the outer diameter of the negative pressure rod is provided between the second cavity and the first cavity. The movable disc is located in the second cavity. One end of the negative pressure rod is connected to the movable disc, and the other end extends into the first channel. The top of the rotating shaft also has a connecting hole that communicates with the first channel. The connecting hole communicates with a second blind hole.

[0010] Furthermore, the unlocking component also includes a squeezing plate, the base has a through hole, the center of the drive gear is located in the through hole, the base also has a third cavity, the third cavity is connected to the second cavity through a second channel, the squeezing plate is located in the third cavity, one end of the squeezing plate has an outer diameter that is the same as the inner diameter of the third cavity, and the other end of the squeezing plate extends into the through hole.

[0011] Furthermore, the calibration rod includes a first calibration rod, a second calibration rod, and a third calibration rod, wherein the first calibration rod is threadedly connected to the center thread of the drive gear;

[0012] The two ends of the second calibration rod are movably connected to the first calibration rod and the third calibration rod, respectively;

[0013] The second calibration rod is also provided with a handle on its side wall, and the handle is detachably connected to the second calibration rod.

[0014] Furthermore, the second calibration rod has a cavity, and a first airbag is provided inside the cavity. The upper end of the first calibration rod is located inside the cavity. Several third blind holes are provided on the side wall of the first calibration rod. A compression rod and a third elastic element are provided inside the third blind holes. The third blind holes are connected to the first airbag through a third channel.

[0015] Furthermore, a limiting groove is provided on the inner wall of the cavity of the second calibration rod, and a fourth blind hole is provided on the side wall of the first calibration rod. A fourth elastic element and a limiting ball are provided in the third blind hole. The fourth elastic element is used to push the limiting ball into the limiting groove.

[0016] The inner wall of the cavity is also provided with a guide groove, which is connected to the limiting groove.

[0017] Furthermore, the handle includes a horizontal tube and a movable rod. The side wall of the horizontal tube is provided with a fifth blind hole communicating with the interior of the horizontal tube. The side wall of the second calibration rod is provided with a mounting hole. The inner wall of the mounting hole is provided with a groove. The groove is provided with a fifth elastic element and a locking block. The fifth elastic element is used to push the locking block into the fifth blind hole to fix the horizontal tube in the mounting hole.

[0018] The horizontal tube is provided with a sealing plug, and the movable rod extends into the horizontal tube and connects with the sealing plug. The second calibration rod is also provided with a fourth cavity. The fourth cavity is provided with a sixth elastic element and a push rod. The push rod passes through the limiting groove. The fourth cavity is connected to the mounting hole through a fourth channel.

[0019] Furthermore, the mounting hole is also provided with a second airbag and a movable block. The outer diameter of the movable block is consistent with the inner diameter of the mounting hole. The side wall of the second calibration rod is also provided with a vent hole, which is connected to the mounting hole. The movable block is provided with an inlet hole, one end of which is connected to the vent hole and the other end is connected to the second airbag.

[0020] The top of the second calibration rod is also provided with an assembly hole, the second airbag is connected to the assembly hole, a rubber plug is provided in the assembly hole, and the third calibration rod extends into the assembly hole and is connected to the rubber plug.

[0021] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0022] When the calibration rod encounters obstacles such as rocks during its insertion into the soil, the present invention utilizes an unlocking component to unlock the locking component. This allows the calibration rod to rotate synchronously with the first gear via the drive gear, thereby extending the reinforcing rod into the soil and stabilizing the base on the ground. Ultimately, this achieves the goal of stabilizing the calibration rod on the base and preventing it from tilting. Attached Figure Description

[0023] The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0024] Figure 1 This is a schematic diagram of the structure of the present invention;

[0025] Figure 2 For the present invention Figure 1 A magnified structural diagram of section A in the middle;

[0026] Figure 3 This is a schematic diagram of the internal structure of the base of the present invention;

[0027] Figure 4 For the present invention Figure 3 A magnified structural diagram of section B in the middle;

[0028] Figure 5 This is a schematic diagram of the connection structure between the first calibration rod and the second calibration rod of the present invention;

[0029] Figure 6 This is a schematic diagram of the handle component of the present invention;

[0030] Figure 7 This is a schematic diagram of the reinforcing rod of the present invention.

[0031] The attached diagram shows the markings and corresponding component names:

[0032] 1. Base; 2. Reinforcing rod; 3. First calibration rod; 4. Handle; 5. Second calibration rod; 6. Third calibration rod; 7. Drive gear; 8. Rotating shaft; 9. Second gear; 10. First gear; 11. Rotating shaft; 12. Extrusion plate; 14. Through hole; 15. Second cavity; 16. Movable disc; 17. Negative pressure rod; 18. Limiting rod; 19. Sealing plug; 20. Horizontal tube; 21. Movable rod; 24. Fifth blind hole; 25. Locking block; 26. Second airbag; 27. Movable block; 28. Inlet hole; 29. ​​Vent hole; 30. Extrusion rod; 31. Limiting ball; 32. Guide groove; 33. First airbag; 34. Push rod; 35. Fourth channel; 36. Constraint strip. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention.

[0034] Example

[0035] like Figures 1 to 7 As shown, the present invention includes a base 1 and a calibration rod. The base 1 is provided with a drive gear 7 and a plurality of first gears 10 meshing sequentially, and one of the first gears 10 meshes with the drive gear 7. Each of the first gears 10 is provided with a reinforcing rod 2. The first gear 10 is used to drive the reinforcing rod 2 to move in the vertical direction. The calibration rod is connected to the drive gear 7 by a thread. The base 1 is also provided with a locking component for limiting the rotation of the drive gear 7 and an unlocking component for unlocking the locking component.

[0036] During outdoor surveying, the inventors discovered that when inserting a marker pole into a predetermined location, obstacles such as rocks beneath the soil layer can prevent the pole from being stably fixed in place, causing it to tilt and affecting the accuracy of subsequent measurements. To address this, the inventors designed this auxiliary calibration device for use when rocks obstruct the installation of the marker pole in the soil. Specifically, a base 1 is designed for placement on the ground. Inside the base 1 are a drive gear 7 and several first gears 10. A rotating shaft 11 is mounted on each of the first gears 10, and a reinforcing rod 2 is threadedly connected to the rotating shaft 11. The first gear 10 can drive the rotating shaft 11 to rotate within the base 1. One of the first gears 10 meshes with the driving gear 7. Thus, when the driving gear 7 rotates, the first gear 10 can rotate synchronously. At the same time, the calibration rod is connected to the driving gear 7 by a thread. In the initial state, the locking component restricts the driving gear 7 from rotating. Thus, when installing the calibration rod, by rotating for calibration, since the driving gear 7 cannot rotate at this time, the calibration rod can rotate and move in the vertical direction, allowing the calibration rod to be inserted into the soil, thus achieving the purpose of inserting the calibration rod into the soil.

[0037] When the calibration rod encounters obstacles such as rocks during its insertion into the soil, it cannot continue to extend into the soil. At this point, the locking component is unlocked using the unlocking mechanism, allowing the drive gear 7 to rotate synchronously with the calibration rod. Thus, when the operator rotates the calibration rod, it cannot move downwards further, causing the drive gear 7 to rotate synchronously. The drive gear 7, in turn, drives each of the first gears 10, causing the reinforcing rods 2 on the first gears 10 to extend from the base 1 into the ground, achieving the purpose of extending the reinforcing rods 2 into the soil. The purpose of the reinforcing rods 2 in this design is to improve the fixation of the base 1 to the ground, ensuring the base 1 is stably fixed to the ground, thereby achieving the goal of stably fixing the calibration rod to the ground. Even when obstacles such as rocks are present, the reinforcing rods 2 within the base 1 extend into the soil, achieving the goal of stably fixing the base 1 to the ground, thus preventing the calibration rod from tipping over.

[0038] The locking assembly includes a second gear 9 and a rotating shaft 8. The driving gear 7 or the first gear 10 meshes with the second gear 9. The base 1 has a first cavity inside. One end of the rotating shaft 8 is located in the first cavity, and the other end is fixedly connected to the second gear 9. A first blind hole is provided on the inner wall of the first cavity, and a second blind hole is provided on the outer wall of the rotating shaft 8. A limiting rod 18 with an outer diameter consistent with the inner diameter of the second blind hole and a first elastic element are provided in the second blind hole. The first elastic element is used to push the limiting rod 18 into the first blind hole.

[0039] In this embodiment, to prevent the driving gear 7 from rotating synchronously with the calibration rod during the installation of the calibration rod, thus preventing the calibration rod from moving downward smoothly, a locking assembly is provided. The locking assembly includes a second gear 9 and a rotating shaft 8. In the initial state, under the action of the first elastic element, the limiting rod 18 is pushed into the first blind hole, thereby fixing the rotating shaft 8 in the first cavity. This prevents the rotating shaft 8 from rotating in the first cavity, thus preventing the second gear 9 from rotating. Since the driving gear 7 or the first gear 10 meshes with the second gear 9, neither the driving gear 7 nor the first gear 10 can rotate at this time. This ensures that during the rotation of the calibration rod, the calibration rod can extend downward into the soil under the action of the thread.

[0040] The unlocking assembly includes a movable disc 16 and a negative pressure rod 17. The base 1 also has a second cavity 15 with an inner diameter that is the same as the outer diameter of the movable disc 16. A first channel with an inner diameter that is the same as the outer diameter of the negative pressure rod 17 is provided between the second cavity 15 and the first cavity. The movable disc 16 is located in the second cavity. One end of the negative pressure rod 17 is connected to the movable disc 16, and the other end extends into the first channel. The top of the rotating shaft 8 also has a connecting hole that communicates with the first channel and communicates with a second blind hole.

[0041] In this embodiment, when the calibration rod encounters an obstacle during its extension into the soil, the drive gear 7 drives the first gear 10 to rotate. When the reinforcing rod 2 is extended into the soil, the movable disk 16 located in the second cavity 15 moves upward. During the upward movement of the movable disk 16, the negative pressure rod 17 moves synchronously. Since the outer diameter of the negative pressure rod 17 is the same as the inner diameter of the first channel, the negative pressure rod 17 will generate negative pressure during its movement in the first channel. Under the action of negative pressure, the limiting rod 18, which was originally inserted into the first blind hole, is retracted into the second blind hole, thereby removing the constraint of the limiting rod 18 on the rotating shaft 8, so that the rotating shaft 8 can rotate in the first cavity. At this time, when the calibration rod rotates, the calibration rod will drive the drive gear 7 and the first gear 10 to rotate synchronously, ultimately achieving the purpose of extending the reinforcing rod 2 into the soil.

[0042] The unlocking assembly also includes a squeezing plate 12. The base 1 has a through hole 14. The center of the drive gear 7 is located in the through hole 14. The base 1 also has a third cavity. The third cavity is connected to the second cavity 15 through a second channel. The squeezing plate 12 is located in the third cavity. The outer diameter of one end of the squeezing plate 12 is the same as the inner diameter of the third cavity. The other end of the squeezing plate 12 extends into the through hole 14.

[0043] In this embodiment, in order to enable the movement of the movable disc 16, the unlocking component also includes a compression plate 12. When the compression plate 12 is radially compressed by the through hole, the compression plate 12 will compress the air in the third cavity and compress the air into the second cavity 15, thereby pushing the movable disc 16 in the second cavity 15 to move upward, thus realizing the adjustment of the position of the negative pressure rod 17.

[0044] In another embodiment, the top of the base 1 is also provided with an exhaust hole that communicates with the second cavity 15. The exhaust hole is used to ensure that the air in the second cavity is discharged through the exhaust hole during the movement of the movable disk 16 in the second cavity 15.

[0045] A first spring is also provided in the third cavity. When the pressure on the extrusion plate 12 is removed, the first spring can ensure that the extrusion plate 12 returns to its initial position.

[0046] The calibration rods include a first calibration rod 3, a second calibration rod 5, and a third calibration rod 6. The first calibration rod 3 is threaded to the center of the drive gear 7. The two ends of the second calibration rod 5 are movably connected to the first calibration rod 3 and the third calibration rod 6, respectively. The side wall of the second calibration rod 5 is also provided with a handle 4, which is detachably connected to the second calibration rod 5.

[0047] In this embodiment, the calibration rod consists of three sections: a first calibration rod 3, a second calibration rod 5, and a third calibration rod 6. The first calibration rod 3 and the third calibration rod 6 are movably connected to the second calibration rod 5, meaning their extension lengths can be adjusted on the second calibration rod 5. The first calibration rod 3 is used for pre-embedding in the soil, and the second calibration rod 5 is used to adjust the overall length of the calibration rod to meet the needs of different working conditions. The outer wall of the third calibration rod 6 is also provided with graduations for easy adjustment of its extension length. Furthermore, a handle 4 is provided to facilitate rotation of the calibration rod. After installation, the handle 4 can be quickly detached from the second calibration rod 5.

[0048] The second calibration rod 5 has a cavity, and a first airbag 33 is provided in the cavity. The upper end of the first calibration rod 3 is located in the cavity. A plurality of third blind holes are provided on the side wall of the first calibration rod 3. A compression rod 30 and a third elastic element are provided in the third blind holes. The third blind holes are connected to the first airbag 33 through a third channel.

[0049] In this embodiment, in order to ensure that the extrusion plate 12 located in the through hole 14 can be extruded to unlock the locking assembly, a cavity is also provided in the second calibration rod 5, and a first airbag 33 is also provided in the cavity. When the first calibration rod 3 encounters a stone while extending into the soil, the second calibration rod 5 is used to extrude the first airbag 33, so that the air inside the first airbag 33 is extruded into the third blind hole, thereby pushing the extrusion rod 30 in the third blind hole to extend out of the third blind hole. During the extension process, the extrusion rod 30 extrudes the extrusion plate 12, thereby extruding the cavity in the third cavity into the second cavity. During the process of pushing the movable disc 16 to drive the negative pressure rod 17 to move, the locking assembly is unlocked.

[0050] In this embodiment, since the first calibration rod 3 is used under different working conditions and the position where it encounters stones in the soil varies, in order to ensure that the extrusion rods 30 on the outer wall of the first calibration rod 3 can act on the extrusion plate 12 when the first calibration rod 3 is inserted into the soil at different positions, a number of extrusion rods 30 are provided in the axial direction of the first calibration rod 3, and the distance between two adjacent extrusion rods 30 is less than the length of the extrusion plate 12. At the same time, the extrusion plate 12 is an arc-shaped structure and is distributed circumferentially along the through hole 14, ensuring that the extrusion rods 30 located on the first calibration rod 3 can act on the extrusion plate 12.

[0051] The inner wall of the cavity of the second calibration rod 5 is also provided with a limiting groove, and the side wall of the first calibration rod 3 is also provided with a fourth blind hole. The third blind hole is provided with a fourth elastic element and a limiting ball 31. The fourth elastic element is used to push the limiting ball 31 into the limiting groove. The inner wall of the cavity is also provided with a guide groove 32, which is connected to the limiting groove.

[0052] In this embodiment, in order to ensure that the first calibration rod 3 and the second calibration rod 5 move relative to each other during the normal insertion of the first calibration rod 3 into the soil, a limiting ball 31 and a limiting groove are provided between the first calibration rod 3 and the second calibration rod 5. Under the action of the fourth elastic element, the limiting ball 31 can be pushed into the limiting groove, thereby fixing the limiting ball 31 in the limiting groove and achieving the purpose of fixing the first calibration rod 3 and the second calibration rod 5 together. In this way, during the rotation of the second calibration rod 5, the first calibration rod 3 can be driven to rotate synchronously, thereby achieving the purpose of inserting the second calibration rod 5 into the soil.

[0053] The handle 4 includes a horizontal tube 20 and a movable rod 21. The side wall of the horizontal tube 20 is provided with a fifth blind hole 24 that communicates with the interior of the horizontal tube 20. The side wall of the second calibration rod 5 is provided with a mounting hole whose inner diameter is the same as the outer diameter of the horizontal tube 20. The inner wall of the mounting hole is provided with a groove, and a fifth elastic element and a locking block 25 are provided in the groove. The fifth elastic element is used to push the locking block 25 into the fifth blind hole 24 to fix the horizontal tube 20 in the mounting hole. A sealing plug 19 is provided in the horizontal tube 20. The movable rod 21 extends into the horizontal tube 20 and connects with the sealing plug 19. The second calibration rod 5 is also provided with a fourth cavity. The fourth cavity is provided with a sixth elastic element and a push rod 34. The push rod passes through the limiting groove. The fourth cavity communicates with the mounting hole through a fourth channel 35.

[0054] In this embodiment, in order to enable the detachable connection between the handle 4 and the second calibration rod 5, an installation hole is provided on the side wall of the second calibration rod 5. During installation, the horizontal tube 20 is inserted into the installation hole. When the fifth blind hole 24 on the horizontal tube 20 moves to the locking block 25, the locking block 25 can be inserted into the fifth blind hole 24 under the action of the fifth elastic element, thereby fixing the horizontal tube 20 in the installation hole and realizing a quick connection between the horizontal tube 20 and the installation hole.

[0055] Meanwhile, in this embodiment, when the first calibration rod 3 encounters an obstacle during its insertion into the soil, the movable rod 21 pushes the sealing plug 19 to move within the horizontal tube 20. The sealing plug 19 compresses the air within the horizontal tube 20, causing the air to be squeezed into the mounting hole. The air entering the mounting hole then enters the fourth cavity through the fourth channel 35. The air entering the fourth cavity acts on the push rod 34, forcing the push rod 34 to move into the limiting groove, thereby pushing the limiting ball 31 in the limiting groove out. At this time, when the second calibration rod 5 is pressed down, the limiting ball 31 will move into the guide groove 32. This causes the second calibration rod 5 to compress the top of the first calibration rod 3 against the first airbag 33 as it moves downward, forcing the air inside the first airbag 33 to be squeezed into the third blind hole, thereby pushing the compression rod 30 out. At the same time, when the handle 4 is used to rotate the second calibration rod 5, the guide groove 32 ensures that the first calibration rod 3 can rotate synchronously.

[0056] The elastic force of the fifth elastic element is greater than that of the sixth elastic element.

[0057] When it is necessary to remove the horizontal tube 20 from the mounting hole, continue to push the sealing plug 19 using the movable rod 21. When the air pressure entering the mounting hole pushes the push rod 34 to the maximum displacement, the air pressure generated by the sealing plug 19 will enter the fifth blind hole 24, pushing the locking block 25 in the fifth blind hole 24 back into the groove, thereby quickly removing the constraint of the locking block 25 on the horizontal tube 20, so that the horizontal tube 20 can be removed from the mounting hole.

[0058] The end of the horizontal tube 20 is a conical structure, and the interior of the horizontal tube 20 is permeated by the conical structure.

[0059] During installation, in order to avoid the locking block 25 from obstructing the horizontal tube 20, the end of the horizontal tube 20 is designed as a conical structure to facilitate the interference caused by the locking block 25 during installation.

[0060] The mounting hole is also provided with a second airbag 26 and a movable block 27. The outer diameter of the movable block 27 is the same as the inner diameter of the mounting hole. The side wall of the second calibration rod 5 is also provided with a vent hole 29, which communicates with the mounting hole. The movable block 27 is provided with an inlet hole 28, one end of which communicates with the vent hole 29 and the other end of which communicates with the second airbag 26. The top of the second calibration rod 5 is also provided with an assembly hole, which communicates with the second airbag 26. A rubber plug is provided in the assembly hole, and the third calibration rod 6 extends into the assembly hole and connects with the rubber plug.

[0061] In this embodiment, to facilitate the adjustment of the extension length of the third calibration rod 6, a second airbag 26 and a movable block 27 are also provided in the mounting hole. When the handle 4 is not initially connected to the second calibration rod 5, the movable block 27 moves to the opening of the mounting hole, causing the guide hole 28 and the vent hole 29 on the movable block 27 to be misaligned, and the guide hole 28 to be closed. This closes the assembly hole on the second calibration rod 5, preventing the rubber plug inside the assembly hole from moving, thus ensuring the third calibration rod 6 remains stable within the assembly hole. When the handle 4 is initially not connected to the second calibration rod 5, the movable block 27 moves to the opening of the mounting hole, causing the guide hole 28 to be misaligned with the vent hole 29, and the guide hole 28 to be closed. When the horizontal tube 20 extends into the mounting hole, the end of the horizontal tube 20 pushes the movable block 27 back. When the horizontal tube 20 is stably fixed in the mounting hole, the inlet hole 28 is in communication with the vent hole 29. At this time, the assembly hole is in communication with the outside, so the position of the third calibration rod 6 in the assembly hole can be adjusted arbitrarily. After the device is installed in place, the horizontal tube 20 is removed from the mounting hole, and the inlet hole 28 on the movable block 27 is offset from the vent hole 29 again, so that the assembly hole is sealed again, ensuring that the third calibration rod 6 can be stably fixed on the second calibration rod 5.

[0062] A second spring is also provided inside the second airbag 26, and the elastic force of the second spring is greater than that of the fifth elastic element.

[0063] The second spring ensures that the inlet hole 28 and the vent hole 29 on the movable block 27 are staggered.

[0064] In another embodiment, the top of the base 1 is also provided with the same number of vertical holes as the number of reinforcing rods 2. The reinforcing rods 2 are located inside the vertical holes. The inner wall of the vertical holes is provided with constraint grooves, which are distributed along the direction of the vertical holes. The side wall of the reinforcing rods 2 is also provided with constraint strips 36, which are located inside the constraint grooves.

[0065] When the first gear 10 rotates, the reinforcing rod 2 is connected to the rotating shaft 11 by a thread. This allows the reinforcing rod 2 to move vertically under the action of the constraint bar 36 and the constraint groove, thus extending the reinforcing rod 2 into the soil.

[0066] The bottom of the reinforcing rod 2 is a conical structure, which makes it easy for the reinforcing rod 2 to extend into the soil.

[0067] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An auxiliary calibration device for land surveying, characterized in that, The utility model provides a calibration rod piece and the base (1) that includes, the base (1) is equipped with driving gear (7) and a plurality of first gear (10) that engages in order, and one of first gear (10) is engaged with driving gear (7), first gear (10) is equipped with reinforcing rod (2) all, first gear (10) is used for driving reinforcing rod (2) moves along vertical direction, calibration rod piece is connected with driving gear (7) through thread, the base (1) is equipped with locking assembly for limiting driving gear (7) rotation and unlocking assembly for unlocking locking assembly.

2. The auxiliary calibration device for land surveying according to claim 1, wherein The locking assembly includes a second gear (9) and a rotating shaft (8), the driving gear (7) or the first gear (10) is engaged with the second gear (9), the base (1) is internally provided with a first cavity, one end of the rotating shaft (8) is located in the first cavity, and the other end is fixedly connected with the second gear (9); A first blind hole is arranged on the inner wall of the first cavity, a second blind hole is arranged on the outer wall of the rotating shaft (8), a limiting rod (18) with an outer diameter consistent with the inner diameter of the second blind hole and a first elastic member are arranged in the second blind hole, and the first elastic member is used to push the limiting rod (18) to extend into the first blind hole.

3. The auxiliary calibration device for land surveying according to claim 2, wherein The unlocking assembly includes a movable disc (16) and a negative pressure rod (17), the base (1) is further provided with a second cavity (15) with an inner diameter consistent with the outer diameter of the movable disc (16), a first channel with an inner diameter consistent with the outer diameter of the negative pressure rod (17) is arranged between the second cavity (15) and the first cavity, the movable disc (16) is located in the second cavity, one end of the negative pressure rod (17) is connected with the movable disc (16), and the other end extends into the first channel, and the top of the rotating shaft (8) is further provided with a connecting hole in communication with the first channel, and the connecting hole is in communication with the second blind hole.

4. The auxiliary calibration device for land surveying according to claim 3, wherein The unlocking assembly further includes an extrusion plate (12), the base (1) is provided with a through hole (14), the center of the driving gear (7) is located in the through hole (14), the base (1) is further provided with a third cavity, the third cavity is in communication with the second cavity (15) through a second channel, the extrusion plate (12) is located in the third cavity, one end of the extrusion plate (12) has an outer diameter consistent with the inner diameter of the third cavity, and the other end of the extrusion plate (12) extends into the through hole (14).

5. The auxiliary calibration device for land surveying according to claim 4, wherein The calibration rod piece includes a first calibration rod (3), a second calibration rod (5) and a third calibration rod (6), the first calibration rod (3) is threadedly connected with the center of the driving gear (7) through thread; Both ends of the second calibration rod (5) are movably connected with the first calibration rod (3) and the third calibration rod (6) respectively; The side wall of the second calibration rod (5) is further provided with a handle piece (4), and the handle piece (4) is detachably connected with the second calibration rod (5).

6. The auxiliary calibration device for land surveying according to claim 5, wherein The second calibration rod (5) is internally provided with a cavity, the cavity is internally provided with a first air bag (33), the upper end of the first calibration rod (3) is located in the cavity, a plurality of third blind holes are arranged on the side wall of the first calibration rod (3), the third blind holes are internally provided with extrusion rods (30) and third elastic members, and the third blind holes are communicated with the first air bag (33) through third channels.

7. The auxiliary calibration device for land surveying according to claim 6, wherein A limiting groove is further arranged on the inner wall of the cavity of the second calibration rod (5), a fourth blind hole is further arranged on the side wall of the first calibration rod (3), a fourth elastic member and a limiting ball (31) are arranged in the third blind hole, and the fourth elastic member is used to push the limiting ball (31) to be clamped into the limiting groove. A guide groove (32) is further arranged on the inner wall of the cavity, and the guide groove (32) is communicated with the limiting groove.

8. The auxiliary calibration device for land surveying according to claim 7, wherein The handle piece (4) comprises a cross pipe (20) and a movable rod (21), a fifth blind hole (24) in communication with the inside of the cross pipe (20) is arranged on the side wall of the cross pipe (20), a mounting hole is arranged on the side wall of the second calibration rod (5), a groove is arranged on the inner wall of the mounting hole, a fifth elastic member and a locking block (25) are arranged in the groove, and the fifth elastic member is used to push the locking block (25) to be inserted into the fifth blind hole (24), so that the cross pipe (20) is fixed in the mounting hole. A sealing plug (19) is arranged in the cross pipe (20), the movable rod (21) is connected with the sealing plug (19) and extends into the cross pipe (20), a fourth cavity is further arranged in the second calibration rod (5), a sixth elastic member and a push rod (34) are arranged in the fourth cavity, the push rod penetrates into the limiting groove, and the fourth cavity is communicated with the mounting hole through a fourth channel (35).

9. The auxiliary calibration device for land surveying according to claim 7, wherein A second air bag (26) and a movable block (27) are further arranged in the mounting hole, the outer diameter of the movable block (27) is consistent with the inner diameter of the mounting hole, a gas vent (29) is further arranged on the side wall of the second calibration rod (5), the gas vent (29) is communicated with the mounting hole, a lead-in hole (28) is arranged on the movable block (27), one end of the lead-in hole (28) is communicated with the gas vent (29), and the other end of the lead-in hole (28) is communicated with the second air bag (26); A mounting hole is further arranged on the top of the second calibration rod (5), the second air bag (26) is communicated with the mounting hole, a rubber plug is arranged in the mounting hole, and the third calibration rod (6) is connected with the rubber plug and extends into the mounting hole.

Images