Total station hand wheel with damping easy to adjust

Abstract

The invention relates to the technical field of servo total stations, in particular to a total station hand wheel easy to adjust damping, which comprises a total station side cover, a hand wheel and a damping pressing ring, the hand wheel comprises an encoder rotating shaft assembly and a rotating assembly, and the rotating assembly sleeves the encoder rotating shaft assembly. An adjusting assembly and a fixing assembly which are used for adjusting the relative position of the encoder rotating shaft assembly and the rotating assembly are arranged in the rotating assembly, the encoder rotating shaft assembly is fixedly connected with the total station side cover, a mounting face is arranged on the side, close to the total station side cover, of the rotating assembly, a hand wheel mounting groove is formed in the total station side cover, and the damping pressing ring is arranged on the rotating assembly in a sleeving mode. One side of the damping pressing ring abuts against the hand wheel installation groove, and the other side of the damping pressing ring abuts against the installation face. Convenient stepless adjustment of damping force is achieved, fine adjustment difficulty caused by improper damping is avoided, and aiming precision and operation efficiency are remarkably improved.

Description

Technical Field

[0001] This invention relates to the technical field of servo total stations, and more specifically, to a total station handwheel with easily adjustable damping. Background Technology

[0002] A total station, also known as a total electronic distance measuring instrument, is a high-tech surveying instrument integrating optics, mechanics, and electronics. It's a surveying instrument system that integrates the functions of measuring horizontal angles, vertical angles, distances, and elevation differences. Because it can complete all measurement work at a station with a single instrument setup, it is called a total station. It is widely used in precision engineering surveying or deformation monitoring fields such as large-scale above-ground construction and underground tunnel construction. The handwheel of a total station, as an important component of the instrument, primarily functions to allow surveyors to precisely adjust the telescope's aiming position during measurement, thereby achieving fine-tuning of measurement parameters and ensuring the accuracy and reliability of the measurements. Therefore, the design requirements for the handwheel are extremely high in the design of a total station.

[0003] However, the handwheel structure of existing total stations generally suffers from difficult-to-adjust damping, making it hard to control the tightness of the handwheel rotation when fine-tuning the aiming at the measurement target. Excessive handwheel damping causes excessive force on the moving parts, increasing friction and making them prone to wear or damage. It may also make the handwheel difficult to turn during fine adjustments, affecting measurement accuracy. Conversely, excessively tight handwheel damping requires more force from the operator for fine-tuning, increasing operational difficulty and potentially causing operator fatigue, thus impacting measurement efficiency and accuracy. Insufficient handwheel damping may cause the handwheel to slip or spring back during adjustments, affecting alignment accuracy. It is also more susceptible to external vibrations or operator hand tremors, affecting measurement stability. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies where the damping of the handwheel rotation is not easy to adjust, thereby reducing the measurement accuracy and stability of the total station. This invention provides a total station handwheel with easily adjustable damping, which can quickly adjust the damping value according to the operator's needs, thereby improving the efficiency and accuracy of total station measurement work.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: An easily adjustable damping total station handwheel is provided, comprising a total station side cover, a handwheel, and a damping pressure ring. The handwheel includes an encoder shaft assembly and a rotating assembly. The rotating assembly is sleeved on the encoder shaft assembly. The rotating assembly contains an adjusting component and a fixing component for adjusting the relative position of the encoder shaft assembly and the rotating assembly. The encoder shaft assembly is fixedly connected to the total station side cover. The rotating assembly has a mounting surface on the side near the total station side cover. The total station side cover has a handwheel mounting groove. The damping pressure ring is sleeved on the rotating assembly, with one side abutting against the handwheel mounting groove and the other side abutting against the mounting surface.

[0006] The easily adjustable damping total station handwheel of this invention is installed in the handwheel mounting groove of the total station's side cover. The encoder shaft assembly, located inside the total station's side cover, is adjusted by rotating the rotating component, thereby completing the measurement work. When the damping force between the rotating component and the encoder shaft assembly is unsuitable and damping adjustment is required, the relative position of the encoder shaft assembly and the rotating component is adjusted by the adjusting component, decreasing or increasing the distance between the mounting surface and the handwheel mounting groove. Then, the relative position of the encoder shaft assembly and the rotating component is fixed by the fixing component, thereby changing the clamping degree of the damping ring between the mounting surface and the handwheel mounting groove. This achieves convenient stepless adjustment of the damping force. The operator can easily change the clamping degree between the damping ring and the handwheel mounting groove and mounting surface, which translates into a change in the frictional damping force when the rotating component rotates. This avoids the difficulty of fine-tuning caused by improper damping, significantly improving aiming accuracy and operating efficiency.

[0007] Furthermore, the rotating assembly includes a handwheel knob, the inner side of the damping pressure ring has a first abutment surface that is interference-fitted with the handwheel knob, and the outer side of the damping pressure ring has a V-shaped annular groove. The interference fit between the inner side of the damping pressure ring and the handwheel knob ensures that the first abutment surface maintains close contact with the handwheel knob, thereby providing stable frictional damping. Simultaneously, the V-shaped annular groove on the outer side of the damping pressure ring facilitates deformation when compressed, increasing or decreasing the damping, thus enabling convenient damping adjustment.

[0008] Furthermore, the damping ring has a second abutting surface that abuts against the handwheel mounting groove and a third abutting surface that abuts against the mounting surface. A fixing groove is provided on the mounting surface. By using adhesive in the fixing groove to connect the mounting surface and the third abutting surface, the installation of the damping ring is ensured to be more stable. During use, by adjusting the relative positions of the encoder shaft assembly and the rotating assembly, the distance between the handwheel and the handwheel mounting groove is changed, thereby adjusting the friction between the second abutting surface and the handwheel mounting groove, and between the third abutting surface and the mounting surface, achieving stepless adjustment of the rotational damping.

[0009] Furthermore, the adjustment assembly includes a length adjustment component. The rotating assembly has a support portion with a mounting hole. The length adjustment component passes through the mounting hole and abuts against the support portion. The length adjustment component is fixedly connected to the encoder shaft assembly. The length adjustment component can pass through the mounting hole and connect to the encoder shaft assembly. Through the abutment design between the length adjustment component and the support portion, the rotating assembly is driven to move closer to the encoder shaft assembly, achieving precise adjustment of the relative position between the rotating assembly and the encoder shaft assembly, thereby flexibly controlling the magnitude of the handwheel rotation damping force.

[0010] Furthermore, the length adjusting component is a screw, and the encoder shaft assembly has a fixing screw hole. The screw passes through the mounting hole and is threaded into the fixing screw hole, with the screw head abutting against the support portion. By screwing the screw into or out of the fixing screw hole, the relative position between the length adjusting component and the encoder shaft assembly can be adjusted. The abutting action between the screw head and the support portion allows for stepless adjustment of the axial distance between the rotating component and the encoder shaft assembly, thereby precisely controlling the damping force of the handwheel rotation.

[0011] Furthermore, the adjustment assembly also includes a reset component disposed between the length adjustment member and the encoder shaft assembly. The reset component is used to restore the position of the length adjustment member. The reset component automatically compensates for the displacement of the length adjustment member. When damping needs to be reduced, there is no need for the user to manually move the manual adjustment member; simply use the fixing component to fix the rotating assembly and the encoder shaft assembly at a suitable position. This improves the convenience of damping adjustment operations and increases on-site adjustment efficiency.

[0012] Furthermore, the reset component is an elastic element sleeved on the length adjusting member. The encoder shaft assembly has an elastic element mounting groove. One end of the elastic element abuts against the elastic element mounting groove, and the other end abuts against the support portion. By being installed between the elastic element mounting groove and the support portion, the elastic element provides elastic force to the length adjusting member for automatic reset, thereby improving the stability and automatic recovery capability of the damping adjustment.

[0013] Furthermore, the fixing component is a connecting set screw, and the rotating component has a threaded connection hole. The connecting set screw is threadedly connected to the threaded connection hole and abuts against the encoder shaft assembly. The threaded connection between the connecting set screw and the threaded connection hole enables the detachable axial fixing of the encoder shaft assembly, ensuring a stable connection between the rotating component and the encoder shaft assembly while facilitating quick removal of the fixing for damping adjustment.

[0014] Furthermore, the rotating assembly also includes a fixed base, which is sleeved inside the handwheel knob. The encoder shaft assembly is sleeved inside the fixed base, and the threaded connection hole is located inside the fixed base. The encoder shaft assembly has a first limiting plane, and the fixed base has a second limiting plane inside. The first and second limiting planes are aligned, and there is a play between them. The bottom surface of the connecting set screw abuts against the first limiting plane. The alignment of the first and second limiting planes restricts the fixed base to move only back and forth on the encoder shaft assembly. The play between the first and second limiting planes prevents excessive friction from causing difficulty in position adjustment. Finally, the abutting force between the connecting set screw and the first limiting plane locks the positions of the rotating assembly and the encoder shaft assembly, synchronously driving the encoder shaft to move when the rotating assembly moves.

[0015] Furthermore, the handwheel knob has a third limiting plane with a through hole, and the fixed base has a fourth limiting plane aligned with the third limiting plane. The threaded connection hole passes through the fourth limiting plane and intersects the second limiting plane, with the threaded connection hole aligned with the through hole. This alignment of the third and fourth limiting planes limits the relative position between the handwheel knob and the fixed base, ensuring the threaded connection hole aligns with the through hole and facilitating the installation of the connecting screw.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. Enables convenient stepless adjustment of damping force. Operators can easily change the tightness between the damping pressure ring and the handwheel mounting groove and mounting surface, which is converted into a change in the frictional damping force when the rotating component rotates. This avoids the difficulty of fine adjustment caused by improper damping and significantly improves aiming accuracy and operating efficiency. 2. By adjusting the cooperation between the fixed and fixed components, the relative position between the encoder shaft assembly and the rotating assembly is precisely controlled, ensuring the stability and consistency of the damping force adjustment during use and preventing loosening; 3. The multi-limit plane design and the precise alignment of through holes and threaded connection holes ensure accurate alignment and reliable connection between components, facilitating quick installation and damping adjustment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the handwheel of a total station; Figure 2 This is a cross-sectional view of the handwheel of a total station; Figure 3 An exploded view of the total station handwheel; Figure 4 This is a cross-sectional view of the rotating component; Figure 5 This is a schematic diagram of the damping pressure ring.

[0018] In the attached diagram: 100, total station side cover; 110, handwheel mounting slot; 200, handwheel; 210, encoder shaft assembly; 211, fixing screw hole; 212, elastic element mounting slot; 213, first limit plane; 220, adjustment assembly; 221, length adjustment element; 222, reset assembly; 230, fixing assembly; 231, connecting set screw; 240, handwheel knob; 241, mounting surface; 242, fixing glue groove; 243, third limit plane. Surface; 244, Through hole; 245, Knob cover; 246, Tooling hole; 250, Fixing base; 251, Support part; 252, Mounting hole; 253, Threaded connection hole; 254, Second limiting plane; 255, Fourth limiting plane; 300, Damping pressure ring; 310, First abutting surface; 320, V-shaped ring groove; 330, Second abutting surface; 340, Third abutting surface; 400, Bluetooth antenna; 500, Automatic measurement button; 600, Nameplate slot. Detailed Implementation

[0019] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0020] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0021] Example 1 This embodiment is a first embodiment of an easily adjustable damping total station handwheel, including a total station side cover 100, a handwheel 200, and a damping pressure ring 300. The handwheel 200 includes an encoder shaft assembly 210 and a rotating assembly. The rotating assembly is sleeved on the encoder shaft assembly 210. The rotating assembly has an adjusting assembly 220 and a fixing assembly 230 for adjusting the relative position of the encoder shaft assembly 210 and the rotating assembly. The encoder shaft assembly 210 is fixedly connected to the total station side cover 100. The rotating assembly has a mounting surface 241 on the side near the total station side cover 100. The total station side cover 100 has a handwheel mounting groove 110. The damping pressure ring 300 is sleeved on the rotating assembly. One side of the damping pressure ring 300 abuts against the handwheel mounting groove 110, and the other side abuts against the mounting surface 241.

[0022] like Figure 1 , Figure 2 As shown, in this embodiment, the easily adjustable damping total station handwheel 200 is installed in the handwheel mounting groove 110 of the total station side cover 100. The encoder shaft assembly 210 located inside the total station side cover 100 is adjusted by rotating the rotating assembly, thereby completing the measurement work. When the damping force between the encoder shaft assembly 210 and the rotating component is unsuitable and damping adjustment is required, the relative position of the encoder shaft assembly 210 and the rotating component is adjusted by adjusting component 220, thereby decreasing or increasing the distance between the mounting surface 241 and the handwheel mounting groove 110. Then, the relative position of the encoder shaft assembly 210 and the rotating component is fixed by fixing component 230, thereby changing the clamping degree of the damping pressure ring 300 set between the mounting surface 241 and the handwheel mounting groove 110. This achieves convenient stepless adjustment of the damping force. The operator can easily change the clamping degree between the damping pressure ring 300 and the handwheel mounting groove 110 and the mounting surface 241, which is converted into a change in the frictional damping force when the rotating component rotates. This avoids the difficulty of fine adjustment caused by improper damping and significantly improves aiming accuracy and operating efficiency.

[0023] like Figure 5 As shown, the rotating assembly includes a handwheel 200 knob, a first contact surface 310 on the inner side of the damping pressure ring 300 that is interference-fitted with the handwheel 200 knob, and a V-shaped annular groove 320 on the outer side of the damping pressure ring 300. The interference fit between the inner side of the damping pressure ring 300 and the handwheel 200 knob ensures that the first contact surface 310 maintains close contact with the handwheel 200 knob, thus providing stable frictional damping. Simultaneously, the design of the V-shaped annular groove 320 on the outer side of the damping pressure ring 300 facilitates deformation of the damping pressure ring 300 when compressed, increasing or decreasing the damping, thereby achieving convenient damping adjustment.

[0024] like Figure 5As shown, the damping pressure ring 300 has a second abutting surface 330 that abuts against the handwheel mounting groove 110 and a third abutting surface 340 that abuts against the mounting surface 241. The mounting surface 241 has a fixing glue groove 242. By setting glue in the fixing glue groove 242 to connect the mounting surface 241 and the third abutting surface 340, the installation of the damping pressure ring 300 is ensured to be more stable. During use, by adjusting the relative position of the encoder shaft assembly 210 and the rotating assembly, the distance between the handwheel 200 and the handwheel mounting groove 110 is changed, thereby adjusting the friction between the second abutting surface 330 and the handwheel mounting groove 110, and between the third abutting surface 340 and the mounting surface 241, so as to achieve stepless adjustment of the rotational damping.

[0025] The adjustment component 220 in this embodiment includes a length adjustment member 221. A support portion 251 is provided within the rotating component, and a mounting hole 252 is provided within the support portion 251. The length adjustment member 221 passes through the mounting hole 252 and abuts against the support portion 251. The length adjustment member 221 is fixedly connected to the encoder shaft assembly 210. The length adjustment member 221 can pass through the mounting hole 252 and connect to the encoder shaft assembly 210. Through the abutment design between the length adjustment member 221 and the support portion 251, the rotating component as a whole is driven to move closer to the encoder shaft assembly 210, achieving precise adjustment of the relative position between the rotating component and the encoder shaft assembly 210, thereby flexibly controlling the magnitude of the damping force of the handwheel 200.

[0026] like Figure 3 As shown, the length adjustment component 221 is a screw. The encoder shaft assembly 210 has a fixing screw hole 211. The screw passes through the mounting hole 252 and is threaded into the fixing screw hole 211. The screw head abuts against the support part 251. By screwing the screw into or out of the fixing screw hole 211, the relative position between the length adjustment component 221 and the encoder shaft assembly 210 can be adjusted. The abutment between the screw head and the support part 251 enables stepless adjustment of the axial distance between the rotating component and the encoder shaft assembly 210, thereby precisely controlling the rotational damping force of the handwheel 200.

[0027] like Figure 1 , Figure 3As shown, the total station side cover 100 in this embodiment can be equipped with multiple sets of handwheels 200, corresponding to horizontal and vertical adjustments respectively. Each handwheel 200 knob has a knob cover 245 threadedly connected to it, protecting the internal structure of the knob. The knob cover 245 has a tooling hole 246 for quick removal, allowing adjustment of the internal screws and damping. The total station side cover 100 in this embodiment is also equipped with a Bluetooth antenna 400. Surveyors can remotely operate the instrument for measurements by connecting to the total station via Bluetooth using a wireless device, eliminating the need for one person to operate the instrument and another to move the tripod, enabling single-person operation, simplifying and improving work efficiency while reducing labor costs. The total station side cover 100 also features an automatic measurement button 500. This button quickly activates the measurement function, simplifying the operation process and automatically completing measurements such as angles, distances, and elevations, reducing human error and improving measurement efficiency. The total station's side cover 100 is also designed with an inwardly recessed nameplate groove 600 for attaching instrument nameplate information. In addition, reinforcing ribs can be added to the total station's side cover 100 to strengthen the side cover's structural strength and prevent deformation.

[0028] Example 2 This embodiment is a second embodiment of an easily adjustable damping total station handwheel. Similar to the first embodiment, the difference lies in that the adjustment component 220 further includes a reset component 222 disposed between the length adjustment component 221 and the encoder shaft assembly 210. The reset component 222 is used to restore the position of the length adjustment component 221. The reset component 222 automatically compensates for the displacement of the length adjustment component 221. When damping needs to be reduced, the user does not need to manually move the manual adjustment component; simply use the fixing component 230 to fix the rotating component and the encoder shaft assembly 210 at a suitable position. This improves the convenience of damping adjustment and increases on-site adjustment efficiency.

[0029] The reset component 222 is an elastic element sleeved on the length adjusting component 221. The encoder shaft assembly 210 has an elastic element mounting groove 212. One end of the elastic element abuts against the elastic element mounting groove 212, and the other end abuts against the support part 251. By being installed between the elastic element mounting groove 212 and the support part 251, the elastic element provides elastic force to the length adjusting component 221 for automatic reset, thereby improving the stability and automatic recovery capability of the damping adjustment.

[0030] like Figure 2 , Figure 3As shown, the fixing component 230 is a connecting set screw 231, and the rotating component has a threaded connection hole 253. The connecting set screw 231 is threadedly connected to the threaded connection hole 253 and abuts against the encoder shaft assembly 210. The threaded connection between the connecting set screw 231 and the threaded connection hole 253 enables the detachable axial fixing of the encoder shaft assembly 210, ensuring a stable connection between the rotating component and the encoder shaft assembly 210, and facilitating quick removal of the fixing for damping adjustment.

[0031] Example 3 This embodiment is a second embodiment of an easily adjustable damping total station handwheel. This embodiment is similar to the first embodiment, except that, as shown in the example... Figure 2 , Figure 4 As shown, the rotating assembly also includes a fixed base 250, which is fitted inside the handwheel 200 knob. The encoder shaft assembly 210 is fitted inside the fixed base 250, and a threaded connection hole 253 is provided inside the fixed base 250. The encoder shaft assembly 210 is provided with a first limiting plane 213, and the fixed base 250 is provided with a second limiting plane 254. The first limiting plane 213 and the second limiting plane 254 are aligned and there is a movable gap between the first limiting plane 213 and the second limiting plane 254. The bottom surface of the connecting set screw 231 abuts against the first limiting plane 213. The first limiting plane 213 and the second limiting plane 254 are aligned to restrict the fixed seat 250 to move back and forth only on the encoder shaft assembly 210. At the same time, a clearance is left between the first limiting plane 213 and the second limiting plane 254 to avoid excessive friction that would make position adjustment difficult. Finally, the position of the rotating component and the encoder shaft assembly 210 is locked by the contact force between the connecting set screw 231 and the first limiting plane 213, and the encoder shaft moves synchronously when the rotating component moves.

[0032] like Figure 4 As shown, in this embodiment, the handwheel 200 knob has a third limiting plane 243, and a through hole 244 on the third limiting plane 243. The fixed base 250 has a fourth limiting plane 255 aligned with the third limiting plane 243. The threaded connection hole 253 passes through the fourth limiting plane 255 and intersects the second limiting plane 254, and the threaded connection hole 253 is aligned with the through hole 244. The alignment of the third limiting plane 243 and the fourth limiting plane 255 limits the relative position between the handwheel 200 knob and the fixed base 250, allowing the threaded connection hole 253 to align with the through hole 244, facilitating the installation of the connecting screw 231.

[0033] In this embodiment, the mounting base 250 is also provided with a mounting head. The mounting head passes through the knob of the handwheel 200 and has an external thread. The mounting nut is threadedly connected to the mounting head, thereby fixing the mounting base 250 and the knob of the handwheel 200 and ensuring connection stability. In this embodiment, the encoder shaft assembly 210 includes a mounting frame and a shaft disposed inside the mounting frame. The mounting frame has an external thread. The encoder shaft assembly 210 is fixed to the side cover by the encoder nut of the handwheel 200 that is threadedly connected to the external thread of the mounting frame.

[0034] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0035] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A total station handwheel with easily adjustable damping, characterized in that, The device includes a total station side cover (100), a handwheel (200), and a damping ring (300). The handwheel (200) includes an encoder shaft assembly (210) and a rotating assembly. The rotating assembly is sleeved on the encoder shaft assembly (210). The rotating assembly has an adjustment assembly (220) and a fixing assembly (230) for adjusting the relative position of the encoder shaft assembly (210) and the rotating assembly. The encoder shaft assembly (210) is fixedly connected to the total station side cover (100). The rotating assembly has a mounting surface (241) on the side near the total station side cover (100). The total station side cover (100) has a handwheel mounting groove (110). The damping ring (300) is sleeved on the rotating assembly. One side of the damping ring (300) abuts against the handwheel mounting groove (110), and the other side abuts against the mounting surface (241).

2. The easily adjustable damping total station handwheel according to claim 1, characterized in that, The rotating assembly includes a handwheel (200) knob, the inner side of the damping pressure ring (300) is provided with a first contact surface (310) that is interference-fitted with the handwheel (200) knob, and the outer side of the damping pressure ring (300) is provided with a V-shaped annular groove (320).

3. The easily adjustable damping total station handwheel according to claim 1, characterized in that, The damping pressure ring (300) is provided with a second contact surface (330) that abuts against the handwheel mounting groove (110) and a third contact surface (340) that abuts against the mounting surface (241). The mounting surface (241) is provided with a fixing groove (242).

4. The easily adjustable damping total station handwheel according to claim 1, characterized in that, The adjustment assembly (220) includes a length adjustment member (221). The rotation assembly has a support part (251) inside. The support part (251) has a mounting hole (252) inside. The length adjustment member (221) passes through the mounting hole (252) and abuts against the support part (251). The length adjustment member (221) is fixedly connected to the encoder shaft assembly (210).

5. The easily adjustable damping total station handwheel according to claim 4, characterized in that, The length adjustment component (221) is a screw. The encoder shaft assembly (210) has a fixing screw hole (211). The screw passes through the mounting hole (252) and is threadedly connected to the fixing screw hole (211). The head of the screw abuts against the support part (251).

6. The easily adjustable damping total station handwheel according to claim 4, characterized in that, The adjustment assembly (220) further includes a reset assembly (222) disposed between the length adjustment member (221) and the encoder shaft assembly (210), the reset assembly (222) being used to restore the position of the length adjustment member (221).

7. The easily adjustable damping total station handwheel according to claim 6, characterized in that, The reset component (222) is an elastic element sleeved on the length adjustment component (221). The encoder shaft assembly (210) is provided with an elastic element mounting groove (212). One end of the elastic element abuts against the elastic element mounting groove (212), and the other end abuts against the support part (251).

8. The easily adjustable damping total station handwheel according to any one of claims 2 to 7, characterized in that, The fixing component (230) is a connecting set screw (231), and the rotating component is provided with a threaded connecting hole (253). The connecting set screw (231) is threadedly connected to the threaded connecting hole (253) and abuts against the encoder shaft assembly (210).

9. The easily adjustable damping total station handwheel according to claim 8, characterized in that, The rotating assembly also includes a fixed seat (250), which is fitted inside the handwheel (200) knob. The encoder shaft assembly (210) is fitted inside the fixed seat (250). The threaded connection hole (253) is located inside the fixed seat (250). The encoder shaft assembly (210) is provided with a first limiting plane (213). The fixed seat (250) is provided with a second limiting plane (254). The first limiting plane (213) and the second limiting plane (254) are aligned and there is a movable gap between the first limiting plane (213) and the second limiting plane (254). The bottom surface of the connecting set screw (231) abuts against the first limiting plane (213).

10. The easily adjustable damping total station handwheel according to claim 9, characterized in that, The handwheel (200) knob has a third limiting plane (243) inside, and a through hole (244) is provided on the third limiting plane (243). The fixed base (250) has a fourth limiting plane (255) aligned with the third limiting plane (243). The threaded connection hole (253) passes through the fourth limiting plane (255) and is aligned with the second limiting plane (254).

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