RTK device

Abstract

The utility model relates to the technical field of RTK measuring instruments, and discloses an RTK device, which is characterized in that a directional assembly mechanism is arranged on a shell of a main machine, a mounting nut of the directional assembly mechanism is rotatably arranged in a connecting hole of the main machine, and a mounting sleeve is provided with a positioning recess matched with a positioning bone on the connecting hole, so that the positioning groove is matched with the positioning bone on the connecting hole; when the mounting sleeve is connected to the shell, the mounting sleeve is inserted into the connecting hole, due to the positioning recess and the positioning bone, the mounting sleeve can only be directionally inserted into the connecting hole, and the mounting sleeve is driven to axially move in the rotating process of the mounting nut, so that the mounting sleeve sinks into the connecting hole, and the mounting sleeve is driven to axially move in the moving process of the mounting sleeve. The installation nut rotates while the installation sleeve does not rotate, and the direction of the installation sleeve is fixed, so that the initial position of a thread of the installation sleeve is fixed and unchanged, the direction of the centering rod is kept consistent with that of a main machine after the centering rod is in threaded connection with the installation sleeve, and subsequent personnel operation is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of RTK measurement instrument technology, and in particular to an RTK device. Background Technology

[0002] RTK, or Real-time Kinematic, is a carrier phase differential technology that uses real-time processing of carrier phase observations from two measurement stations. It transmits the carrier phase data collected by the base station to the user receiver, where the difference is calculated to determine the coordinates. This is a new and commonly used GPS measurement method. Previous static, rapid static, and dynamic measurements required post-processing to achieve centimeter-level accuracy, while RTK provides centimeter-level positioning accuracy in real-time in the field. It employs a dynamic real-time carrier phase differential method, representing a significant milestone in GPS applications. Its emergence has brought new hope to engineering surveying, topographic mapping, and various control surveys, greatly improving the efficiency of fieldwork. RTK measurement equipment includes an RTK base station and an RTK rover. The RTK base station is typically set up at a known point, using the known coordinates to inversely calculate the impact of various errors, and then transmits these errors wirelessly to the RTK rover, allowing the rover to quickly obtain error corrections and improve positioning accuracy.

[0003] For RTK rover stations, the RTK device typically includes a main unit and a centering rod. The main unit and the centering rod are connected via a threaded connection at the top of the centering rod and a threaded sleeve at the bottom of the main unit. The centering rod also needs to be connected to a support. The centering rod is an integrated centering rod that combines a laser rangefinder, a precision magnification device, and a display screen. Ideally, the operator should stand in front of the RTK device with the main unit's control buttons, the centering rod's control devices, and the screen facing the operator for easy operation. However, because the direction of the threaded sleeve during installation is uncertain, the starting position of the thread on the sleeve cannot be determined. When the centering rod is threadedly connected to the threaded sleeve on the main unit, the main unit's control buttons and the centering rod's control devices and screen are not in the same direction, causing operational inconvenience. Utility Model Content

[0004] The purpose of this invention is to provide an RTK device that enables directional installation, thereby aligning the centering rod with the direction of the host machine.

[0005] To achieve the above objectives, this utility model provides an RTK device, including a main unit and a centering rod. The main unit includes a housing with a connecting hole. The centering rod is installed in the connecting hole via a directional assembly mechanism. The directional assembly mechanism includes a mounting nut and a mounting sleeve. The mounting nut is rotatably disposed in the connecting hole. The mounting sleeve has threaded structures on both its inner and outer sides. The outer side of the mounting sleeve has a positioning recess that extends axially along the mounting sleeve. The inner side of the connecting hole has a positioning rib that mates with the positioning recess. The mounting sleeve is threadedly connected to the mounting nut. The top end of the centering rod has a mounting head with a threaded structure on its outer side. The mounting head is fitted inside the mounting sleeve and is threadedly connected to the mounting sleeve.

[0006] As a preferred embodiment, the housing is provided with a receiving cavity and an opening communicating with the receiving cavity, and the connecting hole communicates with the receiving cavity.

[0007] As a preferred embodiment, the connecting hole includes a first hole segment and a second hole segment connected to each other. The diameter of the first hole segment is larger than the diameter of the second hole segment. The second hole segment is further away from the center of the host relative to the first hole segment. The mounting nut is located in the first hole segment, and the positioning bone is located in the second hole segment.

[0008] As a preferred embodiment, the directional assembly mechanism further includes an anti-loosening washer, which is disposed within the first hole section and is closer to the second hole section than the mounting nut.

[0009] As a preferred embodiment, the diameter of the first hole is larger than the outer diameter of the mounting nut.

[0010] As a preferred embodiment, the positioning recess is a groove extending axially along the mounting sleeve, and the positioning bone is a protrusion protruding from the inside of the connecting hole, with the positioning bone inserted into the positioning recess.

[0011] As a preferred embodiment, the mounting sleeve includes a first cylindrical section and a second cylindrical section connected together. The inner sides of both the first and second cylindrical sections are provided with threaded structures for connection to the mounting head. The outer side of the first cylindrical section at the end furthest from the second cylindrical section is provided with a threaded structure for connection to the mounting nut. The outer diameter of the second cylindrical section is larger than the outer diameter of the first cylindrical section. The cross-section of the first cylindrical section is circular, while the cross-section of the second cylindrical section is non-circular, thereby forming the positioning recess relative to its circumcircle. The connecting hole includes a mating hole section and a guide hole section connected together. The guide hole section is further away from the center of the housing relative to the mating hole section. The cross-section of the mating hole section is circular, the same as that of the first cylindrical section, while the cross-section of the guide hole section is non-circular, the same as that of the second cylindrical section, thereby forming the positioning bone relative to its circumcircle.

[0012] As a preferred embodiment, the outer side of the mounting sleeve is provided with a side groove extending circumferentially thereon.

[0013] As a preferred embodiment, the end of the mounting sleeve away from the mounting nut is provided with a retaining ring, the outer diameter of which is larger than the diameter of the connecting hole.

[0014] As a preferred embodiment, the directional assembly mechanism further includes a waterproof ring, which is fitted onto the mounting sleeve and located between the retaining ring and the housing.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This invention features an directional assembly mechanism on the housing of the main unit. The mounting nut of this mechanism is rotatably mounted in the connection hole of the main unit, and the mounting sleeve has a positioning recess that mates with the positioning rib on the connection hole. Therefore, when connecting the mounting sleeve to the housing, inserting the sleeve into the connection hole ensures that, due to the positioning recess and rib, the sleeve can only be inserted directionally. Rotating the mounting nut causes the mounting sleeve to move axially during rotation, causing it to sink into the connection hole. Furthermore, while the mounting nut rotates, the mounting sleeve remains stationary because its direction is fixed. This ensures that the starting position of the mounting sleeve's thread is constant, guaranteeing that after the centering rod and mounting sleeve are threadedly connected, the centering rod maintains the same direction as the main unit, facilitating subsequent operation. Attached Figure Description

[0017] Figure 1 This is an exploded view of the RTK device according to an embodiment of the present invention.

[0018] Figure 2This is a cross-sectional view of the RTK device according to an embodiment of the present invention.

[0019] Figure 3 This is an exploded view of the host computer of Embodiment 2 of this utility model.

[0020] Figure 4 This is a cross-sectional view of the host computer of Embodiment 2 of this utility model.

[0021] Figure 5 This is a schematic diagram of the installation sleeve according to Embodiment 2 of this utility model.

[0022] Figure 6 This is an exploded view of the host computer of Embodiment 3 of this utility model.

[0023] Figure 7 This is a schematic diagram of the installation sleeve of Embodiment 3 of this utility model.

[0024] In the diagram, 1-Main unit; 2-Centering rod; 3-Housing; 4-Connecting hole; 401-First hole section; 402-Second hole section; 4021-Matching hole section; 4022-Guide hole section; 5-Receiving cavity; 6-Opening; 7-Mounting nut; 8-Mounting sleeve; 801-Side groove; 802-First cylinder section; 803-Second cylinder section; 9-Positioning recess; 10-Positioning bone; 11-Mounting head; 12-Anti-loosening washer; 13-Retaining ring; 14-Waterproof ring; 15-Sealing ring. Detailed Implementation

[0025] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0026] In the description of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They 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, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0029] Example 1

[0030] like Figures 1 to 7 As shown, a preferred embodiment of the RTK device of this utility model includes a main unit 1 and a centering rod 2. The main unit 1 includes a housing 3, and the housing 3 is provided with a connecting hole 4. The centering rod 2 is installed in the connecting hole 4 through a directional assembly mechanism. The directional assembly mechanism includes a mounting nut 7 and a mounting sleeve 8. The mounting nut 7 is rotatably disposed in the connecting hole 4. The inner and outer sides of the mounting sleeve 8 are provided with threaded structures. The outer side of the mounting sleeve 8 is provided with a positioning recess 9, which extends along the axial direction of the mounting sleeve 8. The inner side of the connecting hole 4 is provided with a positioning bone 10, which cooperates with the positioning recess 9. The mounting sleeve 8 is threadedly connected to the mounting nut 7. The top end of the centering rod 2 is provided with a mounting head 11, and the outer side of the mounting head 11 is provided with a threaded structure. The mounting head 11 is fitted inside the mounting sleeve 8, and the mounting head 11 is threadedly connected to the mounting sleeve 8. In this embodiment, an directional assembly mechanism is provided on the housing 3 of the main unit 1. The mounting nut 7 of the directional assembly mechanism is rotatably disposed in the connection hole 4 of the main unit 1, and the mounting sleeve 8 is provided with a positioning recess 9 that cooperates with the positioning bone 10 on the connection hole 4. Therefore, when the mounting sleeve 8 is connected to the housing 3, the mounting sleeve 8 is inserted into the connection hole 4. Due to the positioning recess 9 and the positioning bone 10, the mounting sleeve 8 can only be directionally inserted into the connection hole 4. When the mounting nut 7 is rotated, since the mounting nut 7 and the mounting sleeve 8 have a matching thread structure, the mounting sleeve 8 is driven to move axially during the rotation of the mounting nut 7, thereby causing the mounting sleeve 8 to sink into the connection hole 4. During the movement of the mounting sleeve 8, the mounting nut 7 rotates while the mounting sleeve 8 does not rotate. Because the direction of the mounting sleeve 8 is fixed, the starting position of the thread of the mounting sleeve 8 is fixed and unchanged. This ensures that after the centering rod 2 and the mounting sleeve 8 are threadedly connected, the direction of the centering rod 2 and the main unit 1 are consistent, which facilitates subsequent operation.

[0031] In this embodiment, the housing 3 has a receiving cavity 5 and an opening 6 communicating with the receiving cavity 5, and a connecting hole 4 communicating with the receiving cavity 5. Through the opening 6 and the receiving cavity 5, the operator's hand or tool can rotate the mounting nut 7 located in the connecting hole 4. The receiving cavity 5 is used to accommodate the battery, antenna, etc. of the main unit 1. When the main unit 1 is assembled, the mounting nut 7 is first placed on the housing 3, then the mounting sleeve 8 is connected, then the components in the receiving cavity 5 are installed, and finally the cover is installed at the opening 6.

[0032] Furthermore, the connecting hole 4 in this embodiment includes a first hole segment 401 and a second hole segment 402 connected to each other. The diameter of the first hole segment 401 is larger than the diameter of the second hole segment 402. The second hole segment 402 is further away from the center of the main unit 1 relative to the first hole segment 401. The mounting nut 7 is disposed in the first hole segment 401, and the positioning bone 10 is disposed in the second hole segment 402. Since the opening 6 and the receiving cavity 5 are provided, the mounting nut 7 is inserted into the first hole segment 401 through the receiving cavity 5 from the direction of the opening 6. The diameter of the second hole segment 402 is smaller than that of the second hole segment 402, which can position the mounting nut 7 and prevent the mounting nut from falling off.

[0033] In addition, the directional assembly mechanism also includes an anti-loosening washer 12, which is disposed within the first hole section 401 and is closer to the second hole section 402 than the mounting nut 7. The anti-loosening washer 12 can provide a fastening function after the mounting nut 7 is connected to the mounting sleeve 8. Furthermore, it can also withstand wear during the process of rotating the mounting nut 7 to allow the mounting sleeve to sink into the connecting hole 4, thereby preventing damage to the housing 3.

[0034] In addition, the diameter of the first hole section 401 is larger than the outer diameter of the mounting nut 7. After the mounting sleeve 8 is connected, waterproof glue is applied to the first hole section 401 to form a waterproof glue layer that covers the mounting nut 7, thereby fixing the mounting nut 7 and providing a waterproof function.

[0035] Example 2

[0036] The difference between this embodiment and Embodiment 1 is that, based on Embodiment 1, this embodiment provides a further explanation of the installation sleeve 8.

[0037] like Figures 3 to 5 As shown, the positioning recess 9 is a groove extending axially along the mounting sleeve 8, and the positioning rib 10 is a protrusion protruding from the inner side of the connecting hole 4. The positioning rib 10 is inserted into the positioning recess 9. During installation, the positioning rib 10 must be inserted into the positioning recess 9, and due to the obstruction of the positioning rib 10, the mounting sleeve 8 cannot rotate. It can only move axially under the rotation of the mounting sleeve 8, thereby orienting the mounting sleeve 8 and thus orienting the thread on the inner side of the mounting sleeve 8, ensuring the starting position of the thread on the inner side of the mounting sleeve 8.

[0038] The other structures in this embodiment are the same as in Embodiment 1, and will not be described again here.

[0039] Example 3

[0040] The difference between this embodiment and embodiment two is that the positioning recess 9 and the positioning bone 10 in this embodiment are different from those in embodiment two.

[0041] like Figure 6 and Figure 7 As shown, in this embodiment, the mounting sleeve 8 includes a first cylindrical section 802 and a second cylindrical section 803 connected together. The inner sides of both the first cylindrical section 802 and the second cylindrical section 803 are provided with threaded structures that connect to the mounting head 11. The outer side of the end of the first cylindrical section 802 away from the second cylindrical section 803 is provided with a threaded structure that connects to the mounting nut 7. The outer diameter of the second cylindrical section 803 is larger than the outer diameter of the first cylindrical section 802. The cross-section of the first cylindrical section 802 is circular, while the cross-section of the second cylindrical section 803 is non-circular, thereby forming a positioning recess 9 of the second cylindrical section 803 relative to its circumcircle. The connecting hole 4 includes a mating hole section 4021 and a guide hole section 4022 connected together. The guide hole section 4022 is further away from the center of the housing 3 relative to the mating hole section 4021. The cross-section of the mating hole section 4021 is the same as that of the first cylindrical section 802, while the cross-section of the guide hole section 4022 is the same as that of the second cylindrical section 803, thereby forming a positioning bone 10 of the guide hole section 4022 relative to its circumcircle.

[0042] Since the cross-sections of the second cylindrical section 803 and the guide hole section 4022 are non-circular, when the mounting sleeve 8 is inserted into the connecting hole 4, the second cylindrical section 803 and the guide hole section 4022 must be aligned so that the mounting sleeve 8 can sink into the connecting hole 4 and thus achieve orientation.

[0043] In this embodiment, the positioning recess 9 and the positioning bone 10 are formed relative to the outer circle. The positioning recess 9 is non-circular due to its inward concavity, and the positioning bone 10 is non-circular due to its protrusion into the connection hole 4.

[0044] Optionally, in this embodiment, the cross-sections of the second cylindrical section 803 and the guide hole section 4022 are both formed by two rectangular sections and two arc-shaped sections.

[0045] The other structures in this embodiment are the same as in Embodiment 1, and will not be described again here.

[0046] Example 4

[0047] The difference between this embodiment and Embodiment 1 is that, based on Embodiment 1, this embodiment provides a further explanation of the installation sleeve 8.

[0048] In this embodiment, the outer side of the mounting sleeve 8 is provided with a side groove 801 extending circumferentially. The side groove 801 on the outer side of the mounting sleeve 8 reduces the contact area between the mounting sleeve 8 and the wall of the connecting hole 4, thereby reducing friction during the process of the mounting sleeve 8 sinking into the connecting hole 4.

[0049] In addition, a retaining ring 13 is provided at the end of the mounting sleeve 8 away from the mounting nut 7. The outer diameter of the retaining ring 13 is larger than the diameter of the connecting hole 4. When the mounting sleeve 8 is connected in place, the retaining ring 13 abuts against the housing 3 to position the mounting sleeve 8 and prevent the mounting nut 7 from being inserted too deeply into the connecting hole 4.

[0050] In addition, the directional assembly mechanism of this embodiment also includes a waterproof ring 14, which is fitted on the mounting sleeve 8 and is located between the retaining ring 13 and the housing 3, thus playing a waterproof sealing role.

[0051] In this embodiment, the mounting head 11 is also fitted with a sealing ring 15. When the centering rod 2 is connected to the mounting sleeve 8 through the mounting head 11, the sealing ring 15 is located between the centering rod 2 and the retaining ring 13, which plays a role in waterproof sealing.

[0052] The other structures in this embodiment are the same as in Embodiment 1, and will not be described again here.

[0053] In summary, this utility model embodiment provides an RTK device, which provides an directional assembly mechanism on the housing 3 of the main unit 1. The mounting nut 7 of the directional assembly mechanism is rotatably disposed in the connection hole 4 of the main unit 1, and the mounting sleeve 8 is provided with a positioning recess 9 that cooperates with the positioning bone 10 on the connection hole 4. Therefore, when the mounting sleeve 8 is connected to the housing 3, the mounting sleeve 8 is inserted into the connection hole 4. Due to the positioning recess 9 and the positioning bone 10, the mounting sleeve 8 can only be directionally inserted into the connection hole 4. When the mounting nut 7 is rotated, since the mounting nut 7 and the mounting sleeve 8 have a matching thread structure, the mounting sleeve 8 is driven to move axially during the rotation of the mounting nut 7, thereby causing the mounting sleeve 8 to sink into the connection hole 4. During the movement of the mounting sleeve 8, the mounting nut 7 rotates while the mounting sleeve 8 does not rotate. Because the direction of the mounting sleeve 8 is fixed, the starting position of the thread of the mounting sleeve 8 is fixed and unchanged, thereby ensuring that after the centering rod 2 and the mounting sleeve 8 are threadedly connected, the direction of the centering rod 2 and the main unit 1 are consistent, which facilitates subsequent operation.

[0054] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. An RTK device, characterized in that, The system includes a main unit (1) and a centering rod (2). The main unit (1) includes a housing (3) with a connecting hole (4). The centering rod (2) is installed in the connecting hole (4) via a directional assembly mechanism. The directional assembly mechanism includes a mounting nut (7) and a mounting sleeve (8). The mounting nut (7) is rotatably disposed in the connecting hole (4). The mounting sleeve (8) has threaded structures on both its inner and outer sides. The outer side of the mounting sleeve (8) has a positioning recess (9). The recess (9) extends axially along the mounting sleeve (8), and the inner side of the connecting hole (4) is provided with a positioning bone (10). The positioning bone (10) cooperates with the positioning recess (9). The mounting sleeve (8) is threadedly connected to the mounting nut (7). The top end of the centering rod (2) is provided with a mounting head (11). The outer side of the mounting head (11) is provided with a threaded structure. The mounting head (11) is fitted inside the mounting sleeve (8), and the mounting head (11) is threadedly connected to the mounting sleeve (8).

2. The RTK device according to claim 1, characterized in that, The housing (3) is provided with a receiving cavity (5) and an opening (6) communicating with the receiving cavity (5), and the connecting hole (4) is communicating with the receiving cavity (5).

3. The RTK device according to claim 1, characterized in that, The connecting hole (4) includes a first hole segment (401) and a second hole segment (402) connected to each other. The diameter of the first hole segment (401) is larger than the diameter of the second hole segment (402). The second hole segment (402) is further away from the center of the host (1) relative to the first hole segment (401). The mounting nut (7) is located in the first hole segment (401), and the positioning bone (10) is located in the second hole segment (402).

4. The RTK device according to claim 3, characterized in that, The directional assembly mechanism also includes an anti-loosening washer (12), which is disposed in the first hole section (401) and is closer to the second hole section (402) than the mounting nut (7).

5. The RTK device according to claim 3, characterized in that, The diameter of the first hole (401) is larger than the outer diameter of the mounting nut (7).

6. The RTK device according to claim 1, characterized in that, The positioning recess (9) is a groove extending axially along the mounting sleeve (8), and the positioning bone (10) is a protrusion protruding from the inside of the connecting hole (4). The positioning bone (10) is inserted into the positioning recess (9).

7. The RTK device according to claim 1, characterized in that, The mounting sleeve (8) includes a first cylindrical section (802) and a second cylindrical section (803) connected to each other. The inner sides of the first cylindrical section (802) and the second cylindrical section (803) are provided with threaded structures that connect to the mounting head (11). The outer side of the end of the first cylindrical section (802) away from the second cylindrical section (803) is provided with a threaded structure that connects to the mounting nut (7). The outer diameter of the second cylindrical section (803) is larger than the outer diameter of the first cylindrical section (802). The cross-section of the first cylindrical section (802) is circular, and the cross-section of the second cylindrical section (803) is non-circular, so that the second cylindrical section (803) forms the positioning recess (9) relative to its circumcircle. The connecting hole (4) includes a mating hole section (4021) and a guide hole section (4022) connected to each other. The guide hole section (4022) is further away from the center of the housing (3) relative to the mating hole section (4021). The cross-section of the mating hole section (4021) is the same as that of the first cylindrical section (802), and the cross-section of the guide hole section (4022) is the same as that of the second cylindrical section (803), so that the guide hole section (4022) forms the positioning bone (10) relative to its circumcircle.

8. The RTK device according to claim 1, characterized in that, The outer side of the mounting sleeve (8) is provided with a side groove (801) extending circumferentially thereon.

9. The RTK device according to claim 1, characterized in that, The mounting sleeve (8) has a retaining ring (13) at one end away from the mounting nut (7), and the outer diameter of the retaining ring (13) is larger than the diameter of the connecting hole (4).

10. The RTK device according to claim 9, characterized in that, The directional assembly mechanism also includes a waterproof ring (14), which is fitted onto the mounting sleeve (8) and is located between the retaining ring (13) and the housing (3).

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