A land reclamation measuring device

Abstract

The invention provides a surveying device for land reclamation, belonging to the field related to surveying devices; the device comprises a theodolite body, a support seat is oppositely and slidably arranged on the theodolite body, an eyepiece is rotatably arranged on the upper middle end of the support seat, and a protective shell for protecting the eyepiece is arranged on the upper side end of the support seat; both sides of the eyepiece are connected with a rotating shaft through a connecting rod, the rotating shaft is arranged in a shaft sleeve, the shaft sleeve is rotatably and slidably arranged in the support seat, and a positioning component is arranged on the shaft sleeve; the shaft sleeve is connected with a connecting shaft arranged at the lower part of the support seat through a gear assembly, and the connecting shaft is fixedly arranged in the support seat; the positioning component is movably connected with the gear assembly; a display screen is rotatably arranged on the connecting shaft through a threaded sleeve assembly; the device can flexibly adjust the position of the eyepiece, and the protective shell provides all-round protection for the eyepiece; when the eyepiece is folded down, the display screen can also be folded inward, which has a further protective effect on the display screen.

Description

Technical Field

[0001] The invention belongs to the field related to surveying equipment, and in particular relates to surveying equipment for land reclamation. Background Art

[0002] In the field of land consolidation and surveying, obtaining accurate data is crucial to ensuring the quality and efficiency of the project. To achieve this goal, it is usually necessary to rely on high-precision surveying equipment, such as theodolites; as a commonly used surveying tool, the basic structure of the theodolite includes an eyepiece for observation and a display screen for displaying measurement data. Although these devices can meet basic surveying needs under ideal conditions, they have some obvious limitations in practical applications, especially in the changing field measurement environment. For example, the eyepiece, as a key component of the theodolite, usually does not have a special protective shell in the prior art, so it is susceptible to physical damage such as impact and friction when used in the field. In addition, the display screen also lacks effective protection and is easily affected by environmental factors such as dust and moisture, which not only affects the service life of the display screen, but also may reduce the readability of the measurement data.

[0003] In view of the above problems, the present invention proposes an improved land reclamation measurement device. Summary of the invention

[0004] The purpose of the present invention is to solve the above problems. The present invention provides a land reclamation surveying device to solve the technical problems in the prior art that the theodolite eyepiece has no protective shell and the display screen lacks an effective protection mechanism.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A land reclamation surveying device comprises a theodolite body, a support seat is slidably arranged on the theodolite body, an eyepiece is rotatably arranged on the upper middle end of the support seat, and a protective shell for protecting the eyepiece is arranged on the upper side end of the support seat; both sides of the eyepiece are connected to a rotating shaft through a connecting rod, the rotating shaft is arranged in a shaft sleeve, the shaft sleeve is rotatably and slidably arranged in the support seat, and a positioning assembly is arranged on the shaft sleeve; the shaft sleeve is connected to a connecting shaft arranged at the lower part of the support seat through a gear assembly, and the connecting shaft is fixedly arranged in the support seat; the positioning assembly is movably connected to the gear assembly; a display screen is rotatably arranged on the connecting shaft through a threaded sleeve assembly.

[0007] As a further improvement of the above solution, the protective shell includes oppositely arranged side panels, and a top panel is arranged at the top end of the side panels.

[0008] As a further improvement of the above solution, a slider is provided at the lower end of the support seat, the slider is slidably arranged on a guide rail at the upper end of the theodolite body, and limit blocks are provided on both sides of the guide rail.

[0009] As a further improvement of the above scheme, the gear assembly includes a first gear arranged on the shaft sleeve, the first gear is meshingly connected with the second gear, and the second gear is meshingly connected with the third gear; the second gear is arranged on the gear shaft, and the gear shaft is arranged in the support seat; the third gear is arranged on the connecting shaft, and the connecting shaft is fixedly arranged at the lower end of the support seat.

[0010] As a further improvement of the above solution, the positioning assembly includes a boss, which is adapted to fit the groove provided on the first gear; the boss is provided at the side end of the positioning block.

[0011] As a further improvement of the above scheme, the display screen is rotatably set on the connecting shaft through a rotating block; the threaded sleeve assembly includes a threaded sleeve body set on the inner side of the lower end of the support seat, and the threaded sleeve body is suitable for the threaded block set behind the display screen; the threaded block is connected to the side end of the rotating block.

[0012] As a further improvement of the above solution, a hand wheel is arranged at one end of the shaft sleeve, and a handle is arranged on the hand wheel.

[0013] As a further improvement of the above scheme, a positioning pin assembly is movably arranged on the shaft sleeve and the rotating shaft, and the positioning pin assembly includes a horizontal plate, and an electric push rod is arranged at the lower end of the horizontal plate. The telescopic end of the electric push rod is connected to the pin body, and the pin body is movably inserted into the through hole of the shaft sleeve and the step hole of the rotating shaft.

[0014] As a further improvement of the above scheme, vertical rods are arranged at the top ends of the oppositely arranged support seats, and a horizontal rod is arranged between the two vertical rods, and the horizontal rod is arranged as a telescopic structure; the horizontal rod includes a sleeve body, and a rod body is inserted into the sleeve body, and telescopic movement is achieved by arranging an anti-slip layer on the inner side of the sleeve body; an anti-slip sleeve is arranged in the middle part of the rod body.

[0015] As a further improvement of the above solution, the connecting shaft is fixedly arranged on the theodolite body through a supporting body.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The invention provides a land reclamation surveying device. By arranging an opposing and sliding support seat on a theodolite body, the position of an eyepiece can be flexibly adjusted. A protective shell provides all-round protection for the eyepiece to prevent the eyepiece from being accidentally damaged or contaminated, thereby ensuring clarity and accuracy during measurement. When the eyepiece is folded downward, a display screen can be folded inward by a positioning assembly, a gear assembly on a shaft sleeve, and a threaded sleeve assembly, thereby further protecting the display screen.

[0018] In the present invention, a multi-stage meshing gear assembly is provided to drive the support base to move while fixing the connecting shaft, thereby driving the display screen to rotate and flip upward. The surface of the display screen is away from objects or surfaces that may directly contact it, reducing damage caused by friction, impact or pressure, and extending its service life.

[0019] The threaded sleeve and the threaded block in the present invention are used in combination to adjust the angle of the display screen, so that when the protection inside the support seat moves inward, the protective shell covers the eyepiece and flips the display screen upward at the same time. The two work in coordination to complete the covering action of the protective shell and the angle adjustment of the display screen at one time, simplifying the operation process.

[0020] In the present invention, the extension and retraction of the pin body is controlled by an electric push rod, and the user can easily achieve rapid positioning or disengagement of the sleeve and the rotating shaft. The electric push rod can be adjusted according to different usage environments and needs. First, when rotating the eyepiece, the sleeve and the rotating shaft need to be quickly positioned. After positioning, they need to be loosened to allow the sleeve to move inward for a certain distance. After the gear assembly and the positioning assembly on the sleeve are positioned, the sleeve is rotated again to allow the support seat to move inward. The protective shell covers the eyepiece and flips the display screen upward at the same time, which has strong adaptability.

[0021] The design of the telescopic cross bar in the present invention adjusts the length of the cross bar according to the movement of the support seat, providing greater flexibility and adaptability. The anti-skid layer on the inside of the cross bar and the anti-skid sleeve in the middle of the rod body provide good friction to prevent the cross bar from sliding during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a front view of the structure of the present invention.

[0023] Figure 2 It is a top view of the structure of the present invention.

[0024] Figure 3 It is a side view of the display screen related connecting components in the structure of the present invention.

[0025] Figure 4 It is a schematic diagram of the upper half of the front view of the structure of the present invention.

[0026] Figure 5 for Figure 4 Enlarged schematic diagram at point A in the middle.

[0027] Figure 6 It is a front view of the positioning block and the boss in the structure of the present invention.

[0028] The text labels in the figure are as follows: 1. theodolite body; 2. guide rail; 3. support seat; 4. gear shaft; 5. first gear; 501. groove; 6. bushing; 7. positioning block; 8. hand wheel; 9. vertical rod; 10. horizontal rod; 1001. sleeve body; 1002. rod body; 11. anti-slip sleeve; 12. positioning pin assembly; 1201. horizontal plate; 1202. electric push rod; 1203. pin body; 13. rotating shaft; 14. boss; 15. handle; 16. second gear; 17. third gear; 18. connecting shaft; 19. slider; 20. limit block; 21. display screen; 22. support body; 23. protective shell; 2301. side panel; 2302. top panel; 24. threaded sleeve body; 25. threaded block; 26. rotating block; 27. eyepiece; 28. connecting rod. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the technical solution, the present invention is described in detail below in conjunction with embodiments. The description in this section is only exemplary and explanatory and should not have any limiting effect on the scope of protection of the present invention.

[0030] like Figure 1-6 As shown, the specific scheme of this embodiment is: a surveying equipment for land reclamation, including a theodolite body 1, on which a support seat 3 is oppositely and slidably arranged, an eyepiece 27 is rotatably arranged at the upper middle end of the support seat 3, and a protective shell 23 for protecting the eyepiece 27 is arranged at the upper side end of the support seat 3; both sides of the eyepiece 27 are connected to the rotating shaft 13 through a connecting rod 28, the rotating shaft 13 is arranged in a sleeve 6, the sleeve 6 is rotatably and slidably arranged in the support seat 3, and a positioning assembly is arranged on the sleeve 6; the sleeve 6 is connected to a connecting shaft 18 arranged at the lower part of the support seat 3 through a gear assembly, and the connecting shaft 18 is fixedly arranged in the support seat 3; the positioning assembly is movably connected to the gear assembly; a display screen 21 is rotatably arranged on the connecting shaft 18 through a threaded sleeve assembly.

[0031] like Figure 3As shown, as a preferred embodiment of the above embodiment, the protective shell 23 includes side plates 2301 arranged opposite to each other, and a top plate 2302 is arranged at the top of the side plates 2301. The protective shell 23 is used to cover and protect the eyepiece 27 to prevent it from being impacted, rubbed or contaminated by the outside. The protective shell 23 is composed of two side plates 2301 arranged opposite to each other, and the two side plates 2301 form protection on both sides of the eyepiece 27. The design of the side plates 2301 allows the protective shell 23 to cover the eyepiece 27 from both sides. Top plates 2302 are respectively arranged at the tops of the two side plates 2301. The top plate 2302 is connected to the side plates 2301 to form a closed protective space to ensure that the top of the eyepiece 27 is also protected. This design allows the protective shell 23 to completely cover the eyepiece 27 when no measurement is required, thereby providing all-round protection. When the eyepiece 27 needs to be used for observation, the protective shell 23 can be opened or removed to expose the eyepiece 27 for measurement. After use, the protective shell 23 covers the eyepiece 27 again to protect it from damage.

[0032] like Figure 1 As shown, as a preferred embodiment of the above embodiment, a slider 19 is provided at the lower end of the support seat 3, and the slider 19 is slidably arranged on the guide rail 2 at the upper end of the theodolite body 1, and limit blocks 20 are arranged on both sides of the guide rail 2. The slider 19 is arranged at the lower end of the support seat 3, and the slider 19 can slide on the guide rail 2 at the upper end of the theodolite body 1. This design allows the support seat 3 and the eyepiece 27 and protective shell 23 thereon to move along a certain direction on the guide rail 2; the guide rail 2 is installed at the upper end of the theodolite body 1, and its function is to provide a sliding path for the slider 19. The design of the guide rail 2 ensures that the slider 19 can move smoothly and linearly, thereby ensuring the precise positioning of the support seat 3. The limit blocks 20 are arranged on both sides of the guide rail 2, and the function of the limit blocks 20 is to limit the moving range of the slider 19 and prevent the support seat 3 from leaving the guide rail 2 during the movement. The limit blocks 20 ensure that the support seat 3 can only move within the predetermined range of the guide rail 2, thereby increasing the safety and reliability of use. In a specific embodiment, the slider 19 may contact the guide rail 2 through a mechanical roller or a sliding bearing to reduce friction and ensure smooth sliding. The limit block 20 may adopt a rigid structure fixed on the guide rail 2. The precise matching of these components ensures the stability of the entire measuring device during use and the flexibility of operation.

[0033] like Figure 1 As shown, as a preferred embodiment of the above embodiment, the gear assembly includes a first gear 5 arranged on the shaft sleeve 6, the first gear 5 is meshingly connected with the second gear 16, and the second gear 16 is meshingly connected with the third gear 17; the second gear 16 is arranged on the gear shaft 4, and the gear shaft 4 is arranged in the support seat 3; the third gear 17 is arranged on the connecting shaft 18, and the connecting shaft 18 is fixedly arranged at the lower end of the support seat 3.

[0034] The first gear 5 is arranged on the sleeve 6, and the sleeve 6 itself can rotate and slide along the guide rail 2 in the support seat 3. The first gear 5 is mounted on the sleeve 6, meshed with the second gear 16, and is responsible for transmitting the rotational motion to the subsequent gear system. The second gear 16 is meshed with the first gear 5 and arranged on the gear shaft 4. This arrangement allows the second gear 16 to rotate on the gear shaft 4, thereby driving the third gear 17 meshed with it. The gear shaft 4 is mounted in the support seat 3, supporting the second gear 16, and ensuring the stable rotation of the second gear 16. The third gear 17 is meshed with the second gear 16 and arranged on the connecting shaft 18. When the second gear 16 rotates, power is transmitted to the third gear 17 through meshing. The connecting shaft 18 is fixed to the lower end of the support seat 3, supports the third gear 17, and transmits the power of the gear assembly to the connecting shaft 18, thereby driving the support seat 3 to slide. The sliding of the support seat 3 drives the interaction of the threaded sleeve assembly, thereby driving the display screen 21 to rotate upward by a certain angle. The fixed arrangement of the connecting shaft 18 ensures the stability and reliability of the transmission process. The precise transmission and distribution of power is achieved through the meshing between the gears. The design of the sleeve 6 and the gear shaft 4 ensures the stability of the rotational motion. The rotation and sliding ability of the sleeve 6, combined with the gear assembly, allows the support seat 3 and related components to be adjusted accurately in angle and position.

[0035] like Figure 1 As shown, as a preferred embodiment of the above embodiment, the positioning assembly includes a boss 14 , and the boss 14 is compatible with the groove 501 provided on the first gear 5 ; the boss 14 is provided at the side end of the positioning block 7 .

[0036] As a whole, the main function of the positioning assembly is to provide a stable positioning point to ensure the accuracy and repeatability of the gear assembly during the transmission process. The boss 14 is a part of the positioning assembly, and the boss 14 is designed to cooperate with the groove 501 on the first gear 5. The size and shape of the boss 14 are precisely matched with the groove 501 to achieve a good fit between the two. The boss 14 is arranged on the side end of the positioning block 7, and the positioning block 7 may be connected to the sleeve 6 by screws, buckles or other fixing structures. The position and stability of the positioning block 7 are crucial to the function of the entire positioning assembly. Through this design, the cooperation between the boss 14 and the groove 501 ensures the precise positioning of the gear assembly during the transmission process, and prevents the transmission error caused by the sliding or displacement of the gear. At the same time, the positioning block 7 provides a stable support for the boss 14, enhancing the reliability and durability of the entire positioning assembly. This precise positioning mechanism is crucial to ensure the stability and measurement accuracy of the measuring equipment during long-term use.

[0037] like Figure 3As shown, as a preferred embodiment of the above embodiment, the display screen 21 is rotatably arranged on the connecting shaft 18 through a rotating block 26; the threaded sleeve assembly includes a threaded sleeve body 24 arranged on the inner side of the lower end of the support seat 3, and the threaded sleeve body 24 is suitable for a threaded block 25 arranged behind the display screen 21; the threaded block 25 is connected to the side end of the rotating block 26. The display screen 21 is an important part of the measuring device and is used to display the measurement data or image; the rotating block 26 is a key component that enables the display screen 21 to rotate, and it allows the display screen 21 to rotate around the connecting shaft 18. The connecting shaft 18 is fixed to the lower end of the support seat 3, providing a stable support point for the rotating block 26 and the display screen 21. The rotating block 26 rotates around the connecting shaft 18 through the threaded sleeve assembly to adjust the angle of the display screen 21. The threaded sleeve body 24 is arranged on the inner side of the lower end of the support seat 3, and cooperates with the threaded block 25 to form an adjustable threaded connection. The threaded sleeve body 24 has an internal thread that matches the external thread of the threaded block 25. The threaded block 25 is connected to the side end of the rotating block 26 behind the display screen 21, and has an external thread that matches the internal thread of the threaded sleeve 24. When the threaded sleeve 24 moves, the threaded block 25 is driven to rotate, so that the rotating block 26 rotates and thus drives the display screen 21 to rotate. Through the connection and interaction of the above components, the display screen 21 can be stored and used by rotating adjustment. At the same time, the design of the threaded sleeve assembly provides a stable and reliable adjustment mechanism to ensure that the display screen 21 can be firmly maintained at the set position after adjustment.

[0038] like Figure 1 As shown, as a preferred embodiment of the above embodiment, a handwheel 8 is provided at one end of the sleeve 6, and a handle 15 is provided on the handwheel 8. The settings of the handwheel 8 and the handle 15 conform to the principles of ergonomics, so that the user can feel more comfortable during operation and reduce hand fatigue. The handwheel 8 can provide smooth and continuous rotation movements. Together with the use of the handle 15, the rotation angle of the sleeve 6 can be accurately controlled to meet the needs of fine adjustment. The sleeve 6 can be quickly adjusted to the desired position to improve work efficiency.

[0039] like Figure 5 As shown, as a preferred mode of the above embodiment, a positioning pin assembly 12 is movably provided on the sleeve 6 and the rotating shaft 13, and the positioning pin assembly 12 includes a horizontal plate 1201, and an electric push rod 1202 is provided at the lower end of the horizontal plate 1201, and the telescopic end of the electric push rod 1202 is connected to the pin body 1203, and the pin body 1203 is movably inserted into the through hole of the sleeve 6 and the step hole of the rotating shaft 13. When the sleeve 6 and the rotating shaft 13 need to be fixed, the electric push rod 1202 can drive the pin body 1203 to extend and insert into the through hole of the sleeve 6 and the step hole of the rotating shaft 13 to achieve rapid positioning. When the fixing of the sleeve 6 or the rotating shaft 13 needs to be adjusted, the electric push rod 1202 can drive the pin body 1203 to retract and release the positioning of the sleeve 6 and the rotating shaft 13.

[0040] like Figure 1 As shown, as a preferred embodiment of the above embodiment, a vertical rod 9 is provided at the top of the support seat 3 arranged opposite to each other, and a horizontal rod 10 is provided between the two vertical rods 9, and the horizontal rod 10 is provided as a telescopic structure; the horizontal rod 10 includes a sleeve 1001, and a rod 1002 is inserted in the sleeve 1001, and the telescopic structure is achieved by providing an anti-skid layer on the inner side of the sleeve 1001; an anti-skid cover 11 is provided in the middle of the rod 1002. This design allows the length of the horizontal rod 10 to be adjusted as needed to adapt to different measurement environments or user needs. The vertical rod 9 and the support seat 3 provide a stable support point, while the telescopic horizontal rod 10 provides flexibility and convenience of adjustment. The design of the anti-skid layer cover ensures the stability and safety of the horizontal rod 10 during use. The anti-skid cover 11 is provided in the middle of the rod 1002, which may be used to increase the friction with the hand, so that the user is more stable when holding or adjusting the horizontal rod 10 to prevent slipping.

[0041] like Figure 1 As shown, as a preferred embodiment of the above embodiment, the connecting shaft 18 is fixedly arranged on the theodolite body 1 through the supporting body 22. The connecting shaft 18 not only provides support for the display screen 21 and other components, but also enhances the stability and reliability of the entire measuring device through the fixed connection between the supporting body 22 and the theodolite body 1.

[0042] The specific working principle of the present invention is:

[0043] The theodolite body 1 is a core component that provides a basic platform for the measuring device, ensuring the stability and accuracy of the entire system. The support base 3 is oppositely and slidably arranged on the theodolite body 1, allowing the eyepiece 27 and the display screen 21 to adjust their angles according to the measurement requirements.

[0044] The eyepiece 27 is connected to the rotating shaft 13 through a connecting rod 28, and the rotating shaft 13 is arranged in the sleeve 6, so that the eyepiece 27 can be rotated to a desired angle as needed. The protective shell 23 is composed of a side plate 2301 and a top plate 2302 arranged oppositely, protecting the eyepiece 27 from damage and contamination.

[0045] The shaft sleeve 6 rotates and slides in the support base 3 and is equipped with a positioning assembly to ensure that the connection between the rotating shaft 13 and the gear assembly further drives the support base 3 to slide and the angle adjustment of the display screen 21.

[0046] The gear assembly is composed of a first gear 5, a second gear 16 and a third gear 17, which realize mechanical transmission through meshing connection, drive the support seat 3 to slide and the threaded sleeve 24 on the support seat 3 to slide to the threaded block 25 to interact with each other, thereby driving the angle adjustment of the display screen 21. The connecting shaft 18 is fixed in the support seat 3 and connected to the gear assembly on the sleeve 6 to transmit power.

[0047] The positioning pin assembly 12 includes a transverse plate 1201 and an electric push rod 1202 to achieve rapid and accurate positioning or separation of the sleeve 6 and the rotating shaft 13.

[0048] The telescopic crossbar 10, including a sleeve 1001 and a rod 1002, is telescopically adjustable through the inner anti-skid layer, which facilitates the distance adjustment when the support seat 3 slides. The support body 22 ensures that the connecting shaft 18 is stably fixed on the theodolite body 1, enhancing the stability of the overall structure.

[0049] The eyepiece 27 and the display screen 21 of the theodolite are operated according to actual conditions, such as storage or use, and the processes of using the two are reversed according to needs.

[0050] The specific working process of the present invention is:

[0051] After the theodolite is used, the rotating shaft 13 and the sleeve 6 are connected and fixed by the positioning pin assembly 12 through the coordinated action of the rotating shaft 13 and the sleeve 6. The electric push rod 1202 is operated to insert the pin body 1203 into the stepped hole of the rotating shaft 13 to achieve rapid positioning of the sleeve 6 and the rotating shaft 13; at this time, the rotating sleeve 6 drives the rotating shaft 13 to rotate and adjust the eyepiece 27 to flip downward.

[0052] When the eyepiece 27 is in the state of flipping down, the pin body 1203 is retracted by the contraction of the electric push rod 1202, so that the pin body 1203 is not inserted into the stepped hole of the rotating shaft 13, and the sleeve 6 is moved inwardly, so that the boss 14 in the positioning assembly is adapted to the groove 501 provided on the first gear 5. At this time, the sleeve 6 is rotated again, and the mechanical transmission is realized through the meshing connection of the first gear 5, the second gear 16 and the third gear 17, so as to drive the support seat 3 to slide, thereby moving the protective shell 23 inwardly, and protecting the eyepiece 27 in the protective shell 23;

[0053] When the support seat 3 slides, the threaded sleeve 24 on the support seat 3 slides into the threaded block 25 to interact with it. When the threaded block 25 rotates, the angle of the display screen 21 is adjusted, so that the display screen 21 is flipped up for storage. The connecting shaft 18 is fixed in the support seat 3 and connected to the gear assembly on the shaft sleeve 6 to transmit power. The support body 22 firmly fixes the connecting shaft 18 on the theodolite body 1 to ensure the stability of the equipment during the measurement process.

[0054] When the shaft sleeve 6 rotates, the hand wheel 8 and the handle 15 can be used for adjustment, thereby reducing hand fatigue and improving work efficiency.

[0055] The telescopic cross bar 10 is adjusted according to the sliding of the support seat 3 .

[0056] When it is needed, the working process is opposite to the above.

[0057] It should be noted that, in this article, the terms include, contain or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. Specific examples are used in this article to illustrate the principle and implementation of the technical solution of the present invention. The above examples are only used to help understand the method of the present invention and its core idea. The above is only a preferred implementation of the present invention. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements, modifications or changes can be made, and the above technical features can also be combined in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the invention to other occasions without improvement, should be regarded as the protection scope of the present invention.

Claims

1. A land reclamation surveying device, comprising a theodolite body (1), characterized in that: A support seat (3) is slidably arranged on the theodolite body (1), an eyepiece (27) is rotatably arranged on the upper middle end of the support seat (3), and a protective shell (23) for protecting the eyepiece (27) is arranged on the upper side end of the support seat (3); both sides of the eyepiece (27) are connected to a rotating shaft (13) through a connecting rod (28), the rotating shaft (13) is arranged in a shaft sleeve (6), the shaft sleeve (6) is rotatably and slidably arranged in the support seat (3), and a positioning assembly is arranged on the shaft sleeve (6); the shaft sleeve (6) is connected to a shaft arranged at the lower part of the support seat (3) through a gear assembly. The connecting shaft (18) is connected, and the connecting shaft (18) is fixedly arranged in the support seat (3); the positioning assembly is movably connected to the gear assembly; a display screen (21) is rotatably arranged on the connecting shaft (18) through a threaded sleeve assembly; the protective shell (23) includes side plates (2301) arranged opposite to each other, and a top plate (2302) is arranged at the top of the side plates (2301); a slider (19) is arranged at the lower end of the support seat (3), and the slider (19) is slidably arranged on a guide rail (2) at the upper end of the theodolite body (1), and limit blocks (20) are arranged on both sides of the guide rail (2).

2. A land reclamation measuring device according to claim 1, characterized in that: The gear assembly comprises a first gear (5) arranged on a shaft sleeve (6), the first gear (5) being meshedly connected with a second gear (16), and the second gear (16) being meshedly connected with a third gear (17); the second gear (16) being arranged on a gear shaft (4), and the gear shaft (4) being arranged in a support seat (3); and the third gear (17) being arranged on a connecting shaft (18), and the connecting shaft (18) being fixedly arranged at the lower end of the support seat (3).

3. A land reclamation measuring device according to claim 1, characterized in that: The positioning assembly comprises a boss (14), the boss (14) being adapted to fit a groove (501) provided on the first gear (5); the boss (14) being provided at a side end of the positioning block (7).

4. A land reclamation measurement device according to claim 1, characterized in that: The display screen (21) is rotatably arranged on the connecting shaft (18) via a rotating block (26); the threaded sleeve assembly comprises a threaded sleeve body (24) arranged on the inner side of the lower end of the support seat (3), and the threaded sleeve body (24) is adapted to be compatible with a threaded block (25) arranged behind the display screen (21); The threaded block (25) is connected to the side end of the rotating block (26).

5. The land reclamation measuring device according to claim 1, characterized in that: A hand wheel (8) is arranged at one end of the shaft sleeve (6), and a handle (15) is arranged on the hand wheel (8).

6. The land reclamation measuring device according to claim 1, characterized in that: A positioning pin assembly (12) is movably provided on the shaft sleeve (6) and the rotating shaft (13). The positioning pin assembly (12) comprises a horizontal plate (1201). An electric push rod (1202) is provided at the lower end of the horizontal plate (1201). The telescopic end of the electric push rod (1202) is connected to a pin body (1203). The pin body (1203) is movably inserted into the through hole of the shaft sleeve (6) and the stepped hole of the rotating shaft (13).

7. The land reclamation measuring device according to claim 1, characterized in that: A vertical rod (9) is arranged at the top of the support seat (3) arranged opposite to each other, a horizontal rod (10) is arranged between the two vertical rods (9), and the horizontal rod (10) is arranged as a telescopic structure; the horizontal rod (10) comprises a sleeve (1001), a rod body (1002) is inserted into the sleeve (1001), and telescopic movement is achieved by arranging an anti-slip layer on the inner side of the sleeve (1001); and an anti-slip sleeve (11) is arranged in the middle of the rod body (1002).

8. The land reclamation measuring device according to claim 1, characterized in that: The connecting shaft (18) is fixedly arranged on the theodolite body (1) via a supporting body (22).

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