360-degree prism device for contact survey and total station measuring system

Abstract

According to the 360-degree prism device for contact survey and the total station measuring system provided by the utility model, the structure of the 360-degree prism device is improved, so that the precision and the efficiency of underground space measurement are improved, and adverse effects caused by rotation of a plane reflection target are reduced. The 360-degree prism device comprises a prism frame, an upper lifting rope, a lower lifting rope and a prism body which is fixedly connected to the prism frame and can reflect in all directions, the upper lifting rope is connected with the top of the prism frame through a first centering device, and a gravity hammer is hung at the lower end of the lower lifting rope. The upper end is connected with the bottom of the prism frame through a second centering device; when the prism device is in a suspended state, under the action of the first centering device and the second centering device, the extension lines of the upper lifting rope and the lower lifting rope coincide and penetrate through the central axis of the prism body.

Description

Technical Field

[0001] This utility model relates to the field of shaft measurement technology, specifically to a 360° prism device for connection measurement and a total station measurement system. Background Technology

[0002] In the field of surveying technology, ensuring the use of unified coordinate and elevation benchmarks for above-ground and underground spaces is crucial, typically requiring the accurate transfer of surface plane coordinate and elevation systems to the underground. In this process, automatic total stations, as high-precision surveying instruments, are widely used in automated surveying operations. They efficiently acquire and process spatial data, significantly improving the efficiency and accuracy of surveying work.

[0003] However, traditional planar reflective targets have significant drawbacks when used with automatic total stations for underground space surveying. Specifically, traditional planar reflective targets are prone to losing target points due to rotation during the measurement process, which seriously affects the continuity and stability of the measurement. When the target rotates, the direction of the reflected light changes, leading to measurement interruption or data distortion. Utility Model Content

[0004] The purpose of this invention is to provide a 360° prism device for connecting measurements and a total station measurement system. By improving the structure of the 360° prism device, the accuracy and efficiency of underground space measurements are improved, and the adverse effects caused by the rotation of the planar reflective target are reduced.

[0005] To achieve the above objectives, this utility model provides a 360° prism device for measurement. The 360° prism device includes a prism frame, an upper suspension rope, a lower suspension rope, and a prism body capable of omnidirectional reflection fixedly connected to the prism frame. The upper suspension rope is connected to the top of the prism frame through a first centering device. A gravity hammer is suspended at the lower end of the lower suspension rope, and the upper end is connected to the bottom of the prism frame through a second centering device.

[0006] When the prism device is in a suspended state, under the action of the first centering device and the second centering device, the extension lines of the upper suspension rope and the lower suspension rope coincide and pass through the central axis of the prism body.

[0007] In the technical solution of this application, the upper suspension rope is connected to the prism frame using a first centering device, and the lower suspension rope is connected to the prism frame using a second centering device. In the suspended state, the central axes of the upper suspension rope, the lower suspension rope, and the prism body are located on the same straight line. Thus, the prism body is precisely positioned at the center of the 360° prism device, ensuring the stability and accuracy of the prism body in the total station, thereby improving the accuracy and reliability of the measurement. In addition, by using a 360° reflecting prism body, the loss of target points caused by the rotation of traditional planar targets in the suspended state can be avoided.

[0008] Optionally, the top of the prism frame has a first mounting channel for mounting the first centering device, and the bottom of the prism frame has a second mounting channel for mounting the second centering device, the first mounting channel and the second mounting channel extending vertically.

[0009] The central axes of the first mounting channel and the second mounting channel coincide and pass through the central axis of the prism body.

[0010] By setting up the first and second installation channels, the precise positioning and installation of the first and second centering devices are achieved. At the same time, it can be ensured that the prism body can be automatically and accurately positioned at the center of the 360° prism device after installation, without the need for additional adjustment of the prism body's position. This helps to ensure the accuracy of the prism body in optical measuring instruments such as total stations.

[0011] Optionally, both the first centering device and the second centering device include a centering component and a plug. The centering component is used to be fixedly connected to the upper suspension rope and the lower suspension rope, and the plug is used to be fixedly connected to the prism frame.

[0012] The plug is provided with a conical groove, and the centering component is spherical. Under the action of gravity, the centering component can automatically embed itself into the conical groove. The center line of the conical groove coincides with the center axis of the first installation channel and the second installation channel, and the center line of the conical groove passes through the center of the sphere of the centering component.

[0013] By using a method that adapts the conical groove to the centering component of the sphere, the centering component can automatically find and align with the center line of the conical groove during the suspension process, and then automatically find the center axis of the first and second installation channels. This ensures that the prism body can be automatically and accurately positioned at the center of the 360° prism device after installation, even after repeated use.

[0014] Optionally, the upper or lower suspension rope extends radially from one side of the centering member to the other, passing through the center of the sphere of the centering member.

[0015] This ensures that the center of the sphere of the centered component coincides with the center line of the conical groove.

[0016] Optionally, the plugs of the first centering device and the second centering device each include a body portion, which is fixed to the corresponding first mounting channel and second mounting channel; the plug also includes a flange formed by radially outward turning of the body portion; the flange is located on the side where the groove of the conical groove is located; when the prism device is in a suspended state, under the action of the centering member, the flange of the first centering device is vertically pressed against the lower surface of the upper crossbeam; the flange of the second centering device is vertically pressed against the upper surface of the lower crossbeam.

[0017] This increases the load-bearing capacity of the main body, prevents the main body from coming out of the installation channel, and improves the durability of the plug.

[0018] Optionally, the prism frame has an upper crossbeam, the first mounting channel is disposed on the upper crossbeam, the upper crossbeam has a first centerline extending vertically, the first centerline passes through the midpoint of the upper crossbeam in the horizontal plane, and the first centerline coincides with the central axis of the first mounting channel.

[0019] This enables precise centering and positioning of the prism body during installation. It improves the convenience and efficiency of installation and ensures high-precision use of the prism body in optical measuring instruments such as total stations.

[0020] Optionally, the prism frame has a lower crossbeam, the second mounting channel is disposed on the lower crossbeam, the lower crossbeam has a second centerline extending vertically, the second centerline passes through the midpoint of the lower crossbeam in the horizontal plane, and the second centerline coincides with the central axis of the second mounting channel.

[0021] This enables precise centering and positioning of the prism body during installation. It improves the convenience and efficiency of installation and ensures high-precision use of the prism body in optical measuring instruments such as total stations.

[0022] Optionally, a support beam is also provided between the upper crossbeam and the lower crossbeam, and the support beam is also provided with a third mounting channel for mounting the prism body. The first mounting channel, the second mounting channel and the third mounting channel coincide on the vertically extending central axis.

[0023] The central axis of the third mounting channel passes through the central axis of the prism body. Therefore, the prism body can be aligned and positioned with the first and second mounting channels via the third mounting channel.

[0024] Optionally, the radial dimensions of the first and second mounting channels are larger than that of the third mounting channel. This allows the machining device to easily pass through the first and second mounting channels to process the support beam.

[0025] A total station measurement system includes the aforementioned 360° prism device, wherein the prism body serves as a reflective target for the total station measurement system.

[0026] Therefore, by using a prism body that reflects 360° (capable of omnidirectional reflection), the loss of target points caused by the rotation of traditional planar targets in a suspended state can be avoided.

[0027] Other features and advantages of this specification will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0028] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of this specification and, together with their description, serve to explain the principles of this specification.

[0029] Figure 1 This is a structural schematic diagram and front view of the 360° prism device in an embodiment of this utility model;

[0030] Figure 2 yes Figure 1 Axonometric view;

[0031] Figure 3 yes Figure 1 Vertical cross-sectional view of the middle section of the structure.

[0032] Figure label:

[0033] 1-Prism frame; 11-Upper crossbeam; 11a-First mounting channel; 12-Support beam; 12a-Third mounting channel; 13-Lower crossbeam; 13a-Second mounting channel; 14-Longitudinal beam; s1-First centerline; s2-Second centerline; s3-Central axis; 11a-1-First centering device; 11a-2-Second centering device; 111-Centering component; 112-Plug; 112a-Main body; 112b-Flange; 112a-1-Conical groove; 112a-1a-Groove wall; 2-Upper lifting rope; 3-Lower lifting rope; 4-Gravity hammer; 5-Prism body; 51-Connecting column. Detailed Implementation

[0034] This invention provides a 360° prism device and a total station measurement system. By improving the structure of the 360° prism device, the accuracy and efficiency of underground space measurement are improved, and the adverse effects caused by the rotation of the planar reflective target are reduced.

[0035] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] Relational terms such as “first” and “second” are used merely to distinguish one component from another that has the same name, without necessarily requiring or implying any such actual relationship or order between the components.

[0037] Please refer to Figures 1 to 3 , Figure 1 This is a structural schematic diagram and front view of the 360° prism device in an embodiment of this utility model; Figure 2 yes Figure 1 Axonometric view; Figure 3 yes Figure 1 Vertical cross-sectional view of the middle section of the structure.

[0038] like Figures 1 to 3 As shown, this utility model provides a 360° prism device, which includes a prism frame 1, an upper suspension rope 2, a lower suspension rope 3, and a prism body 5 fixedly connected to the prism frame 1. When the prism device is in a suspended state, the prism frame 1 is suspended on the lower side of the upper suspension rope 2, the prism body 5 is fixed on the prism frame 1, and a gravity hammer 4 is suspended on the lower side of the prism frame 1 through the lower suspension rope 3.

[0039] Specifically, the upper suspension rope 2 is connected to the top of the prism frame 1 through the first centering device 11a-1, and the lower suspension rope 3 has a gravity hammer 4 suspended at its lower end and is connected to the bottom of the prism frame through the second centering device 11a-2 at its upper end.

[0040] When the prism device is suspended, under the action of the first centering device 11a-1 and the second centering device 11a-2, the extension lines of the upper suspension rope 2 and the lower suspension rope 3 coincide and pass through the central axis s3 of the prism body 5.

[0041] In the technical solution of this application, the upper suspension rope 2 is connected to the prism frame 1 by the first centering device 11a-1, and the lower suspension rope 3 is connected to the prism frame 1 by the second centering device 11a-2. In the suspended state, the upper suspension rope 2, the lower suspension rope 3, and the central axis s3 of the prism body 5 are located on the same straight line. Thus, the prism body 5 is accurately positioned at the center of the 360° prism device, thereby improving the accuracy and reliability of the measurement. In addition, by using the 360° reflective (omnidirectional reflective) prism body 5 as the target of the total station, the situation where the traditional planar target rotates in the suspended state and the target point is lost can be avoided.

[0042] Please refer to the technical solution in this application. Figure 1 and Figure 2 The prism frame 1 is a prism frame formed by several beams to fix the prism body 5. The prism body 5 is a device capable of omnidirectional reflection, which is existing technology, and its structure will not be described in detail here. The prism frame 1 includes an upper crossbeam 11, a lower crossbeam 13, and a support beam 12, which is used to fix the prism body 5. Vertically, the upper crossbeam 11 is located at the top of the prism frame 1, the lower crossbeam 13 is located at the bottom of the prism frame 1, and the support beam 12 is located between the upper crossbeam 11 and the lower crossbeam 13. One end of the upper crossbeam 11, the lower crossbeam 13, and the support beam 12 on the same side in the horizontal direction are all connected to a longitudinal beam 14, and the other end on the same side in the horizontal direction is connected to another longitudinal beam 14. The prism body 5 is located in the space between the lower crossbeam 13 and the support beam 12.

[0043] Please combine Figure 3 The upper crossbeam 11 has a first mounting channel 11a for installing the first centering device 11a-1, and the lower crossbeam 13 has a second mounting channel 13a for installing the second centering device 11a-2. The first mounting channel 11a and the second mounting channel 13a extend vertically and pass through the corresponding upper crossbeam 11 and lower crossbeam 13.

[0044] Specifically, the upper crossbeam 11 has a first centerline s1 extending vertically, which passes through the midpoint of the upper crossbeam 11 in the horizontal plane and coincides with the central axis of the first mounting channel 11a. The lower crossbeam 13 has a second centerline s2 extending vertically, which passes through the midpoint of the lower crossbeam 13 in the horizontal plane and coincides with the central axis of the second mounting channel 13a. This achieves precise centering and positioning of the prism body 5 during installation, improving the convenience and efficiency of installation and ensuring high-precision use of the prism body 5 in optical measuring instruments such as total stations.

[0045] The central axes of the first mounting channel 11a and the second mounting channel 13a coincide and pass through the central axis s3 of the prism body 5.

[0046] As an alternative example, the middle part of the upper crossbeam 11, i.e., the area where the first mounting channel 11a is opened, is provided with an annular structure, the middle part of which is the first mounting channel 11a, and the rest of the upper crossbeam 11 extends in a straight line. The lower crossbeam 13 and the support beam 12 can both adopt such a structure. When the upper crossbeam 11, the lower crossbeam 13, and the support beam 12 are projected in a direction perpendicular to the plane of the paper, the first center line s1, the central axis s3 of the prism body 5, and the second center line s2 coincide, and the first center line s1 passes through the center of the annular structure.

[0047] By setting the first installation channel 11a and the second installation channel 13a, the precise positioning and installation of the first centering device 11a-1 and the second centering device 11a-2 are achieved. At the same time, it can ensure that the prism body 5 can be automatically and accurately positioned at the center of the 360° prism device after installation, without the need for additional adjustment of the position of the prism body 5. This helps to ensure the accuracy of the prism body 5 in optical measuring instruments such as total stations.

[0048] The structure of the centering device will be explained in detail below.

[0049] Please see Figure 3 and combined Figure 1 or Figure 2 Both the first centering device 11a-1 and the second centering device 11a-2 include a centering element 111 and a plug 112. The centering element 111 and the plug 112 of the two centering devices have the same structure. The centering element 111 is spherical and is used to fix it to the upper lifting rope 2 and the lower lifting rope 3. Both the centering element 111 and the plug 112 are made of metal, such as hard steel, which can be selected by those skilled in the art.

[0050] The connection method between the centering component 111 and the upper suspension rope 2 will be explained below, taking the connection method between the upper suspension rope 2 and the centering component 111 of the first centering device 11a-1 as an example.

[0051] The upper suspension rope 2 runs radially along the centering member 111, passing from one side of the centering member 111 to the other, and through the center of the sphere of the centering member 111. When the 360° prism device is suspended, the upper suspension rope 2 runs vertically through the centering member 111, exiting from the upper part of the centering member 111 to the lower part of the centering member 111, with the bottom end of the upper suspension rope 2 exiting to the lower side of the centering member 111. A stop structure is provided at the bottom end of the upper suspension rope 2 to engage vertically with the centering member 111. The specific structure of the stop structure can be selected by those skilled in the art to prevent the upper suspension rope 2 from coming off the centering member 111.

[0052] It is understandable that the connection method between the lower suspension rope 3 and the centering member 111 is the same as that between the upper suspension rope 2. The difference is that the top of the lower suspension rope 3 passes through the centering member 111, and the stop structure is set at the top of the lower suspension rope 3.

[0053] In the aforementioned manner, the central axis of the first mounting channel 11a and the central axis of the second mounting channel 13a both pass through the center of the sphere of the centering member 111.

[0054] The plug 112 is used to fix it to the prism frame 1. Specifically, the plugs 112 of the first centering device 11a-1 and the second centering device 11a-2 both include a body portion 112a, which is fixed to the corresponding first mounting channel 11a and second mounting channel 13a. That is, the body portion 112a can be pressed into the corresponding first mounting channel 11a and second mounting channel 13a by press fitting.

[0055] The plug 112 is provided with a conical groove 112a-1. That is, a conical groove 112a-1 is formed by vertically recessing one surface of the body 112a. Specifically, the opening of the conical groove 112a-1 faces the side where the prism body 5 is located, that is, the side where the support beam 12 is located, while the cone apex of the conical groove 112a-1 is located on the side away from the prism body 5.

[0056] As shown in the figure, the opening of the conical groove 112a-1 on the upper crossbeam 11 faces downwards, and the bottom of the groove is located on the upper side of the opening. Conversely, the opening of the conical groove 112a-1 on the lower crossbeam 13 faces upwards, and the bottom of the conical groove 112a-1 is located on the lower side of the opening.

[0057] Under the action of gravity, the corresponding centering component 111 can be automatically embedded into the conical groove 112a-1 through the slot. The center line of the conical groove 112a-1 coincides with the central axis of the first mounting channel 11a and the second mounting channel 13a. The center line of the conical groove 112a-1 passes through the center of the ball of the centering component 111.

[0058] By using a method where the conical groove 112a-1 is adapted to the centering component 111 of the sphere, during the suspension process, the centering component 111 can automatically find and align with the center line of the conical groove 112a-1, and thus automatically find the central axis of the first installation channel 11a and the second installation channel 13a. This ensures that, even after repeated use, the prism body 5 can be automatically and accurately positioned at the center of the 360° prism device after installation.

[0059] Specifically, the conical groove 112a-1 has a groove opening and a cone apex, both of which face the side where the prism body 5 is located. The central axes of the first mounting channel 11a and the second mounting channel 13a pass through the cone apex and coincide with the center line of the conical groove. The center line of the conical groove 112a-1 is a straight line perpendicular to the bottom surface from the cone apex. The conical groove 112a-1 can be a cone or a pyramid. When the conical groove 112a-1 is a cone, the center line of the conical groove 112a-1 is a straight line passing through the center of the bottom circle from the cone apex. When the conical groove 112a-1 is a pyramid, the center line of the conical groove 112a-1 is a straight line passing through the center of the bottom polygon from the cone apex. The center of the bottom polygon is the center of the circumcircle or the center of the incircle.

[0060] When the centering member 111 enters the conical groove 112a-1 through the opening of the conical groove 112a-1, the groove wall 112a-1a of the conical groove can contact the centering member 111. This contact can be a line contact or a point contact. When there is a line contact, the part of the groove wall 112a-1a that is tangent to the centering member 111 forms a closed circle around the center line of the conical groove 112a-1. At this time, the conical groove 112a-1 has a conical structure. When the conical groove 112a-1 has a pyramidal structure, the point where the centering member 11 is tangent to the groove wall 112a-1a is symmetrically distributed with respect to the center line of the conical groove 112a-1, and the line connecting the centering member 111 to the center line of the conical groove 112a-1 is perpendicular to the center line of the conical groove 112a-1.

[0061] When the centering component 111 comes into contact with the groove wall 112a-1a of the conical groove 112a-1, under the action of the upper suspension rope 2 and the lower suspension rope 3, the centering component 111 can automatically adjust its center to the groove centerline of the conical groove 112a-1, thereby completing automatic centering.

[0062] This ensures the installation accuracy of the conical groove 112a-1, thereby ensuring that the central axis s3 of the prism body 5 coincides with the extension lines of the upper suspension rope 2 and the lower suspension rope 3 when it is suspended.

[0063] In the aforementioned technical solutions, the plug 112 further includes a flange 112b formed by radially outward turning of the body portion 112a; the flange 112b is located on the side where the opening of the conical groove 112a-1 is located. When the prism device is in a suspended state, under the action of the centering member 111, the flange 112b of the first centering device 11a-1 vertically abuts against the lower surface of the upper crossbeam 11. The flange 112b of the second centering device 11a-2 vertically abuts against the upper surface of the lower crossbeam 13.

[0064] In the suspended state, as shown in the figure, the centering member 111 of the first centering device 11a-1, under the pull of the upper suspension rope 2, is embedded in the corresponding conical groove 112a-1. At this time, the centering member 111 can indirectly press the flange 112b against the lower surface of the upper crossbeam 11. The second centering device 11a-2 can be understood in the same way, and will not be described in detail here.

[0065] This increases the load-bearing capacity of the main body 112a, prevents the main body 112a from coming out of the installation channel, and improves the durability of the plug 112.

[0066] The connection between the support beam 12 and the prism body 5 is described in detail below. The support beam 12 is also provided with a third mounting channel 12a, which is used to mount the prism body 5. The first mounting channel 11a, the second mounting channel 13a, and the third mounting channel 12a coincide on their vertically extending central axes. The radial dimensions of the first mounting channel 11a and the second mounting channel 13a are larger than those of the third mounting channel 12a. This allows the processing device to easily pass through the first mounting channel 11a and the second mounting channel 13a to process the support beam 12. The central axis of the third mounting channel 12a passes through the central axis s3 of the prism body 5. Thus, the prism body 5 can be aligned and positioned with the first mounting channel 11a and the second mounting channel 13a through the third mounting channel 12a.

[0067] To connect the prism body 5 to the third mounting channel 12a, a connecting post 51 is provided at the top of the prism body 5. The connecting post 51 is inserted into the third mounting channel 12a and threadedly connected to the third mounting channel 12a. The central axis of the connecting post 51 coincides with the central axis s3 of the prism body 5, thereby ensuring the installation accuracy of the prism body 5.

[0068] This application also provides a total station measurement system, including the aforementioned 360° prism device, with the prism body 5 serving as a reflective target for the total station measurement system.

[0069] Therefore, by using a prism body 5 with 360° reflection, the loss of target point caused by the rotation of traditional planar targets in a suspended state can be avoided.

[0070] It is understood that, in addition to the matching method between the centering component 111 of the sphere and the conical groove 112a-1 provided in the embodiments of this application, the first centering device 11a-1 and the second centering device 11a-2 in this application may also adopt other structures, and structures that are the same as or similar to them are within the protection scope of this patent.

[0071] Compared with existing technologies, the advantages of this application are:

[0072] By employing a 360° reflective prism body 5, the loss of target points caused by the rotation of traditional planar targets in a suspended state can be avoided; by adopting a new 360° prism device, the testing accuracy of the 360° prism device can be guaranteed even after repeated use.

[0073] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A 360° prism device for measurement, characterized in that, It includes a prism frame (1), an upper suspension rope (2), a lower suspension rope (3), and a prism body (5) that is fixedly connected to the prism frame (1) and is capable of omnidirectional reflection. The upper suspension rope (2) is connected to the top of the prism frame (1) through a first centering device (11a-1). The lower end of the lower suspension rope (3) is equipped with a gravity hammer (4), and the upper end is connected to the bottom of the prism frame (1) through a second centering device (11a-2). When the prism device is in a suspended state, under the action of the first centering device (11a-1) and the second centering device (11a-2), the extension lines of the upper suspension rope (2) and the lower suspension rope (3) coincide and pass through the central axis (s3) of the prism body (5).

2. The 360° prism device for measurement according to claim 1, characterized in that, The top of the prism frame (1) has a first mounting channel (11a) for mounting the first centering device (11a-1), and the bottom of the prism frame (1) has a second mounting channel (13a) for mounting the second centering device (11a-2). The first mounting channel (11a) and the second mounting channel (13a) extend vertically. The central axes of the first mounting channel (11a) and the second mounting channel (13a) coincide and pass through the central axis (s3) of the prism body (5).

3. The 360° prism device for contact measurement according to claim 2, characterized in that, Both the first centering device (11a-1) and the second centering device (11a-2) include a centering component (111) and a plug (112). The centering component (111) is used to be fixedly connected to the upper suspension rope (2) and the lower suspension rope (3), and the plug (112) is used to be fixedly connected to the prism frame (1). The plug (112) is provided with a conical groove (112a-1), and the centering member (111) is spherical. Under the action of gravity, the centering member (111) can automatically embed into the conical groove (112a-1). The center line of the conical groove (112a-1) coincides with the central axis of the first installation channel (11a) and the second installation channel (13a). The center line of the conical groove (112a-1) passes through the center of the sphere of the centering member (111).

4. The 360° prism device for measurement according to claim 3, characterized in that, The upper suspension rope (2) or the lower suspension rope (3) runs vertically from one side of the centering member (111) to the other side and passes through the center of the ball of the centering member (111).

5. The 360° prism device for contact measurement according to claim 3 or 4, characterized in that, The prism frame (1) has an upper crossbeam (11), and the first mounting channel (11a) is disposed on the upper crossbeam (11). The upper crossbeam (11) has a first center line (s1) extending vertically, the first center line (s1) passing through the midpoint of the upper crossbeam (11) in the horizontal plane, and the first center line (s1) coincides with the central axis of the first mounting channel (11a).

6. The 360° prism device for contact measurement according to claim 5, characterized in that, The prism frame (1) has a lower crossbeam (13), and the second mounting channel (13a) is disposed on the lower crossbeam (13). The lower crossbeam (13) has a second center line (s2) extending vertically, which passes through the midpoint of the lower crossbeam (13) in the horizontal plane and coincides with the central axis of the second mounting channel (13a).

7. The 360° prism device for contact measurement according to claim 6, characterized in that, The plugs (112) of the first centering device (11a-1) and the second centering device (11a-2) both include a body part (112a), which is fixed to the corresponding first mounting channel (11a) and second mounting channel (13a); The plug (112) also includes a flange (112b) formed by radially outward turning of the body part (112a); the flange (112b) is located on the side where the groove of the conical groove (112a-1) is located; When the prism device is in a suspended state, under the action of the centering member (111), the flange (112b) of the first centering device (11a-1) is vertically pressed against the lower surface of the upper crossbeam (11); The flange (112b) of the second centering device (11a-2) is vertically pressed against the upper surface of the lower crossbeam (13).

8. The 360° prism device for contact measurement according to claim 6, characterized in that, A support beam (12) is also provided between the upper crossbeam (11) and the lower crossbeam (13). The support beam (12) is also provided with a third mounting channel (12a). The third mounting channel (12a) is used to install the prism body (5). The first mounting channel (11a), the second mounting channel (13a) and the third mounting channel (12a) coincide on the vertically extending central axis. The central axis of the third mounting channel (12a) passes through the central axis (s3) of the prism body (5).

9. The 360° prism device for contact measurement according to claim 8, characterized in that, The radial dimensions of the first mounting channel (11a) and the second mounting channel (13a) are greater than the radial dimension of the third mounting channel (12a).

10. A total station surveying system, characterized in that, Includes the 360° prism device for connection measurement as described in any one of claims 1-9, wherein the prism body (5) serves as a reflective target of the total station measurement system.

Images