Center distance measuring device of total station ranging telescope

Abstract

The application provides a center distance measuring device for a total station ranging telescope, which comprises a first mounting seat, a second mounting seat and a measuring component. The first mounting seat is used for positioning and placing the ranging telescope in a plug-in manner, and the axis of the ranging telescope is perpendicular to the first mounting seat. The second mounting seat is connected to one side of the first mounting seat. The measuring component is installed on the second mounting seat and has a pointer for abutting against the ranging telescope. The abutting direction of the pointer is perpendicular to the axis of the ranging telescope. When the pointer abuts against the outer wall of the ranging telescope, the pointer is telescoped and displaced towards the inside of the measuring component, so that the distance between the axis of the ranging telescope and the outer wall of the ranging telescope is obtained through the displacement amount of the pointer. The device solves the problems of the existing center distance measuring method for the ranging telescope, such as being too complicated, requiring harsh environment and being time-consuming and uneconomic, and significantly improves the efficiency and economy of the center distance measurement of the ranging telescope, which meets the urgent needs of modern total station manufacturing for high-precision, high-efficiency and low-cost measurement.

Description

Technical Field

[0001] This application relates to the technical field of center distance measuring equipment for precision instruments, and more particularly to a center distance measuring device for a total station distance measuring telescope. Background Technology

[0002] A total station is a high-precision surveying instrument integrating optics, mechanics, and electronics, widely used in various surveying fields such as civil engineering, building construction, water conservancy engineering, and geographic information systems. As the core component of a total station, the telescope has a decisive impact on the stability and accuracy of measurements. With the increasing demands for measurement accuracy in modern industry and engineering, the manufacturing precision of the telescope must also be improved accordingly. The telescope assembly mainly consists of key components such as the telescope body, objective lens optical system, eyepiece optical system, rangefinding system, and angle measuring system, all of which are attached to the telescope body. Therefore, the manufacturing quality of the telescope directly determines the overall performance of the total station. However, due to limitations in current manufacturing processes, there is a certain degree of dimensional error in the distance between the left and right end faces of the telescope and the center. This error directly affects the focusing accuracy of the total station in the horizontal direction, leading to deviations in the measurement results and seriously impacting the measurement performance of the total station.

[0003] In existing technology, coordinate measuring machines (CMMs) are used to measure the center distance of telescopes. The specific measurement method involves fixing the telescope to a measuring platform, using the CMM's probe to read the coordinate data of the inner hole of the telescope's focusing barrel and the left and right end faces, then using measurement software to fit the collected point cloud data to calculate the positions of the center line and the left and right end faces, and finally reading and recording the measurement results. This method requires precise workpiece positioning and multiple measurements to ensure data accuracy, but its operation is relatively cumbersome and demands a high level of technical skill from both the measurement software and the operator.

[0004] However, existing coordinate measuring machine (CMM) methods have several drawbacks when measuring the center distance of a ranging telescope. First, the operation is complex, requiring multiple adjustments to the telescope position and probe angle, resulting in long measurement cycles and low efficiency. Second, it demands high precision from the CMM equipment, requiring operation in a constant temperature and humidity environment, increasing equipment purchase and maintenance costs. Third, the entire measurement process is time-consuming, labor-intensive, and uneconomical, failing to meet the demands of modern industry for high-efficiency, high-precision measurements. With the rapid development of total station technology and the increasing demands for measurement accuracy, traditional CMM methods are no longer adequate for the rapid, accurate, and economical measurement needs of modern industry, necessitating a more efficient and convenient measurement technology to replace existing methods. Utility Model Content

[0005] This application provides a center distance measuring device for a total station rangefinder telescope, which solves the technical problems of existing methods for measuring the center distance of rangefinder telescopes being too cumbersome, having harsh environmental requirements, and being time-consuming and uneconomical. The technical solution is as follows:

[0006] This application provides a center distance measuring device for a total station rangefinder telescope, comprising: a first mounting base for positioning the rangefinder telescope in a plug-in manner and making the axis of the rangefinder telescope perpendicular to the first mounting base; a second mounting base connected to one side of the first mounting base; and a measuring component mounted on the second mounting base, the measuring component having a pointer for abutting against the rangefinder telescope, the abutting direction of the pointer being perpendicular to the axis of the rangefinder telescope.

[0007] When the pointer touches the outer wall of the rangefinding telescope, it moves inward toward the measuring component to obtain the distance between the axis of the rangefinding telescope and the outer wall of the rangefinding telescope by measuring the amount of pointer displacement.

[0008] In one embodiment, the first mounting base includes: a base plate component, which has a plate-like structure and a first mounting hole; and a spindle component, which is detachably mounted on the upper surface of the base plate component through the first mounting hole and is used to be inserted into the center hole of the rangefinding telescope.

[0009] In one embodiment, it further includes: a first fastener; and a first threaded hole is provided at the bottom of the spindle component;

[0010] In this configuration, the mandrel component is located on the base plate component, and when the first threaded hole is aligned with the first mounting hole, the first fastener passes through the first mounting hole and is screwed into the first threaded hole to fix the mandrel component to the upper surface of the base plate component.

[0011] In one embodiment, the first mounting hole is configured as an elongated hole extending in a direction close to or away from the second mounting base, and the first fastener is slidable in the first mounting hole to adjust the spacing between the mandrel component and the second mounting base.

[0012] In one embodiment, the second mounting base includes: a side plate component, which has a plate-like structure and has a second mounting hole and a second threaded hole; the side plate component is vertically mounted on one side of the first mounting base through the second mounting hole; a flange component, which has a lug and a mounting portion, the lug being mounted on the side plate component through the second threaded hole, the mounting portion being located above the side plate component by the support of the lug, and the measuring component being detachably mounted on the mounting portion.

[0013] In one embodiment, the device further includes: a second fastener that passes through the second mounting hole and is screwed into the first mounting base in a threaded manner to fix the side plate component to one side of the first mounting base; and a third fastener that passes through the lug and is screwed into the second threaded hole to fix the lug to the side plate component.

[0014] In one embodiment, the second mounting hole is configured as an elongated hole near or away from the measuring component, and the second fastener is slidable in the second mounting hole to adjust the height at which the side plate component supports the measuring component on the first mounting base.

[0015] In one embodiment, the measuring component is configured as a pointer-type dial indicator.

[0016] Compared with existing technologies, the center distance measuring device for total station rangefinders proposed in the above technical solution eliminates the need for complex workpiece positioning and multiple measurement adjustments. It only requires plugging and unplugging the rangefinder telescope onto the first mounting base to achieve vertical axis positioning. The pointer on the measuring component directly abuts against the outer wall of the telescope, generating a telescoping displacement. The center distance data is directly obtained by calculating the displacement, avoiding the complex point cloud fitting process in coordinate measuring machines (CMMs). The measurement process is also unrestricted by environmental conditions and can be performed in ordinary working environments without the need for constant temperature and humidity. The device has a simple structure and low cost, eliminating the need for a high-precision CMM, significantly reducing equipment investment costs. Furthermore, it is easy to operate, requiring no highly skilled operators; ordinary technicians can quickly complete the measurement work. Adopting this application significantly improves the efficiency and economy of center distance measurement for rangefinder telescopes, meeting the urgent needs of modern total station manufacturing for high-precision, high-efficiency, and low-cost measurement, and providing an efficient and practical measurement method for total station quality control.

[0017] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of this application will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0018] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the various drawings denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments disclosed in this application and should not be construed as limiting the scope of this application.

[0019] Figure 1 This is a three-dimensional structural diagram of the center distance measuring device of the total station rangefinder telescope in the embodiments of this application.

[0020] Figure 2This is a three-dimensional structural diagram of the first mounting base in an embodiment of this application;

[0021] Figure 3 This is a structural assembly diagram of the base plate component and the first fastener in an embodiment of this application;

[0022] Figure 4 This is a three-dimensional structural diagram of the mandrel component in an embodiment of this application;

[0023] Figure 5 This is a three-dimensional structural diagram of the side plate component in an embodiment of this application;

[0024] Figure 6 This is a three-dimensional structural diagram of the flange component in an embodiment of this application.

[0025] Figure label:

[0026] 1. First mounting base;

[0027] 11. Base plate assembly; 12. Spindle assembly;

[0028] 101. First mounting hole; 102. First threaded hole; 103. Straight groove structure;

[0029] 2. Second mounting bracket;

[0030] 21. Side panel components; 22. Flange components;

[0031] 201. Second mounting hole; 202. Second threaded hole; 221. Support lug; 222. Mounting part;

[0032] 3. Measuring components;

[0033] 31. Pointer;

[0034] 4. First fastener; 5. Second fastener; 6. Third fastener; 7. Rangefinder telescope. Detailed Implementation

[0035] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this application. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0036] Reference Figure 1As shown, an embodiment of this application proposes a center distance measuring device for a total station rangefinder 7. The center distance measuring device for the total station rangefinder 7 may include: a first mounting base 1 for positioning the rangefinder 7 in a plug-in manner, and making the axis of the rangefinder 7 perpendicular to the first mounting base 1; a second mounting base 2 connected to one side of the first mounting base 1; and a measuring component 3 mounted on the second mounting base 2, the measuring component 3 having a pointer 31 for abutting against the rangefinder 7, the abutting direction of the pointer 31 being perpendicular to the axis of the rangefinder 7.

[0037] When the pointer 31 touches the outer wall of the rangefinding telescope 7, the pointer 31 moves inward toward the measuring component 3 to obtain the distance between the axis of the rangefinding telescope 7 and the outer wall of the rangefinding telescope 7 by means of the displacement of the pointer 31.

[0038] Specifically, in the technical solution adopted in this application, the rangefinder telescope 7 can be positioned on the first mounting base 1, and the axis of the rangefinder telescope 7 is perpendicular to the first mounting base 1. The rangefinder telescope 7 is subject to displacement restriction in the direction of approaching or moving away from the second mounting base 2, thereby achieving accurate positioning of the rangefinder telescope 7. The second mounting base 2 is set on one side of the first mounting base 1, and the measuring component 3 is fixedly installed on the second mounting base 2. The measuring component 3 is equipped with a retractable pointer 31. When the pointer 31 is pushed by the outer wall of the rangefinder telescope 7, the pointer 31 can retract into the measuring component 3. Thus, the distance between the axis of the rangefinder telescope 7 and its outer wall can be calculated based on the amount of retraction displacement of the pointer 31, so as to determine whether the center distance of the rangefinder telescope 7 meets the industry standard.

[0039] In use, a standard model conforming to the center distance standard can be placed on the first mounting base 1, and the pointer 31 of the measuring component 3 can be pressed against the standard model. After it stabilizes, the first displacement of the pointer 31 can be recorded, or the first reading on the measuring component 3 that can characterize the displacement of the pointer 31 can be recorded. The standard model can be a rangefinder telescope 7 conforming to the center distance standard. Then, the standard model can be replaced with the rangefinder telescope 7 to be measured, and the pointer 31 of the measuring component 3 can be pressed against the outer wall of the rangefinder telescope 7. After it stabilizes, the second displacement can be obtained, or the second reading that characterizes the second displacement can be displayed on the measuring component 3. By comparing the second displacement with the first displacement, or by comparing the second reading with the first reading, it can be determined whether the distance between the axis of the rangefinder telescope 7 and its outer wall meets the preset standard.

[0040] In one embodiment, the measuring component 3 can be a pointer dial indicator; since pointer dial indicators are existing products, finished products can be purchased directly when implementing the embodiments of this application, so their internal structure will not be described in detail.

[0041] Furthermore, refer to Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments, the first mounting base 1 includes: a base plate component 11, which has a plate-like structure and a first mounting hole 101 is provided on the base plate component 11; and a spindle component 12, which is detachably mounted on the upper surface of the base plate component 11 through the first mounting hole 101 and is used to be inserted into the center hole of the rangefinder telescope 7.

[0042] Specifically, in the technical solution adopted in this application, the base plate component 11 needs to be placed on a leveled measuring platform. Its plate-like structure can increase the contact area with the platform, thereby providing stable support for the entire center distance measuring device. The spindle component 12 is detachably assembled to the upper surface of the base plate component 11 through the first mounting hole 101. On the one hand, by inserting the spindle component 12 into the center hole of the rangefinder telescope 7, the axial positioning of the rangefinder telescope 7 can be achieved, thereby making the axis of the rangefinder telescope 7 perpendicular to the upper surface of the base plate component 11, ensuring the accuracy of the subsequent measurement reference. On the other hand, when facing different models of rangefinder telescopes 7, the measurement requirements of different specifications of rangefinder telescopes 7 can be met by replacing the spindle component 12 with a scale diameter that matches the center hole of the rangefinder telescope 7, thereby significantly improving the practicality and versatility of the center distance measuring device.

[0043] Furthermore, refer to Figure 3 and Figure 4 As shown, in some embodiments, it further includes: a first fastener 4; and a first threaded hole 102 is provided at the bottom of the spindle component 12;

[0044] When the spindle component 12 is located on the base plate component 11 and the first threaded hole 102 is aligned with the first mounting hole 101, the first fastener 4 passes through the first mounting hole 101 and is screwed into the first threaded hole 102 to fix the spindle component 12 to the upper surface of the base plate component 11.

[0045] Specifically, in the technical solution adopted in this application, the first fastener 4 can be a bolt whose external thread matches the first threaded hole 102, and the diameter of the first mounting hole 101 is larger than the shank of the first fastener 4 and smaller than the head of the first fastener 4. During installation, the bottom of the mandrel component 12 is first placed against the upper surface of the base plate component 11, and the position of the mandrel component 12 is adjusted so that the axis of the first threaded hole 102 at the bottom of the mandrel is completely aligned with the axis of the first mounting hole 101 of the base plate component 11; then the shank of the first fastener 4 is passed through the first mounting hole 101 from the lower surface of the base plate component 11 until its external thread contacts the internal thread of the first threaded hole 102, and the first fastener 4 is screwed on. Through the thread engagement, the shank of the first fastener 4 is gradually screwed into the first threaded hole 102 until the head of the first fastener 4 is tightly abutted against the lower surface of the base plate component 11, so as to complete the fixed assembly of the mandrel component 12.

[0046] In one embodiment, a straight groove structure 103 surrounding the first mounting hole 101 can be provided at the bottom of the base plate component 11, and the head of the first fastener 4 can be embedded in the straight groove structure 103, thereby preventing the first fastener 4 from affecting the flatness of the lower surface of the base plate component 11.

[0047] Furthermore, refer to Figure 3 As shown, in some embodiments, the first mounting hole 101 is configured as an elongated hole extending in a direction close to or away from the second mounting base 2, and the first fastener 4 is slidable in the first mounting hole 101 to adjust the spacing between the spindle component 12 and the second mounting base 2.

[0048] Specifically, in the technical solution adopted in this application, when the position of the spindle component 12 needs to be adjusted, it is not necessary to remove the first fastener 4. Only the first fastener 4 needs to be loosened in the first threaded hole 102. At this time, the rod of the first fastener 4 can slide along the extension direction of the first mounting hole 101, thereby driving the spindle component 12 to slide and adjust along the extension direction of the first mounting hole 101 on the upper surface of the base plate component 11. That is, the spindle component 12 slides and adjusts in the direction closer to or away from the second mounting seat 2. Since the measuring component 3 is assembled on the second mounting seat 2, it can also be understood that it slides and adjusts in the direction closer to or away from the measuring component 3. In this embodiment, before using the center distance measuring device, the distance between the spindle component 12 and the measuring component 3 can be adjusted by the above adjustment method. For range measuring telescopes 7 with different radial dimensions, it is ensured that the extension and retraction of the pointer 31 is within the range that the measuring component 3 can bear, avoiding measurement failure due to improper spacing, and realizing matching for more models and sizes of range measuring telescopes 7.

[0049] Furthermore, refer to Figure 5 and Figure 6 As shown, in some embodiments, the second mounting base 2 includes: a side plate component 21, which has a plate-like structure, and the side plate component 21 has a second mounting hole 201 and a second threaded hole 202; the side plate component 21 is vertically mounted on one side of the first mounting base 1 through the second mounting hole 201; a flange component 22, which has a lug portion 221 and a mounting portion 222, the lug portion 221 is mounted on the side plate component 21 through the second threaded hole 202, and the mounting portion 222 is located above the side plate component 21 by the support of the lug portion 221, and the measuring component 3 is detachably mounted on the mounting portion 222.

[0050] Specifically, in the technical solution adopted in this application, two or more second mounting holes 201 can be opened on the side plate component 21 to stably fix the side plate component 21 to one side of the base plate component 11 of the first mounting seat 1. The second mounting holes 201 are arranged in a straight line along the width direction of the side plate component 21 and penetrate the side plate component 21 along the thickness direction. The lug portion 221 of the flange component 22 and the mounting portion 222 are integrally formed, and the extension direction of the lug portion 221 is perpendicular to the plate surface of the mounting portion 222. The lug portion 221 is positioned below the mounting portion 222 and fixed to one side surface of the side plate component 21 through the second threaded hole 202, so that the mounting portion 222 is positioned above the side plate component 21. The measuring component 3 is detachably mounted on the surface of the mounting part 222 away from the support lug 221, so that the measuring component 3 is located above the side plate component 21. The measuring component 3 is positioned by the structure between the flanges so that the pointer 31 of the measuring component 3 can accurately point directly above the spindle component 12, that is, point to the axis of the rangefinder telescope 7 placed on the spindle component 12, providing a position reference for the pointer 31 to hit the outer wall of the rangefinder telescope 7 and accurately measure the "distance between the axis and the outer wall".

[0051] Furthermore, refer to Figure 1 , Figure 2 and Figure 5 As shown, in some embodiments, it further includes: a second fastener 5, which passes through the second mounting hole 201 and is screwed into the first mounting base 1 in a threaded manner to fix the side plate component 21 to one side of the first mounting base 1; and a third fastener 6, which passes through the lug 221 and is screwed into the second threaded hole 202 to fix the lug 221 to the side plate component 21.

[0052] Specifically, in the technical solution adopted in this application, the second fastener 5 can be a bolt with external threads, the number of which is the same as the number of the second mounting holes 201. On the one hand, this ensures that the connection force between the side plate component 21 and the first mounting base 1 is uniform, and on the other hand, it can prevent the side plate component 21 from flipping or shifting based on the base plate component 11. During installation: first, the side plate component 21 is attached to the side wall of the base plate component 11 of the first mounting base 1, so that the second mounting hole 201 of the side plate component 21 can be aligned with the axis of the preset threaded hole (compatible with the second fastener 5) of the base plate component 11. Then, the rod of the second fastener 5 is passed through the second mounting hole 201 from the outside of the side plate component 21 and screwed into the threaded hole of the base plate component 11 until the head of the fastener tightly abuts against the outer wall of the side plate component 21. This connection method can not only achieve stable erection of the side plate component 21, but also flexibly adjust the position of the side plate component 21 by disassembling the second fastener 5, thereby improving the assembly flexibility of the device. The third fastener 6 can be a bolt that fits the second threaded hole 202. When installing the flange 22, first attach the lug 221 of the flange 22 to the side plate component 21, aligning the through hole on the lug 221 with the second threaded hole 202 on the side plate component 21. Then, pass the rod of the third fastener 6 through the through hole from the outside of the lug 221 and screw it into the second threaded hole 202 until the head of the third fastener 6 is tightly against the lug 221, thus clamping and fixing the lug 221 to the side wall of the side plate component 21. This ensures that the mounting part 222 of the flange 22 is stably placed above the side plate component 21, thereby providing a stable mounting reference for the measuring component 3 and avoiding positional deviation of the pointer 31 during the measurement process, which would affect the accuracy of the center distance measurement.

[0053] Furthermore, refer to Figure 5 As shown, in some embodiments, the second mounting hole 201 is configured as an elongated hole near or away from the measuring component 3, and the second fastener 5 is slidable in the second mounting hole 201 to adjust the height of the side plate component 21 supporting the measuring component 3 on the first mounting base 1.

[0054] Specifically, in the technical solution adopted in this application, when it is necessary to adjust the support height of the side plate component 21, it is not necessary to completely disassemble the second fastener 5. It is only necessary to loosen the second fastener 5 on the base plate component 11 of the first mounting seat 1. At this time, the rod of the second fastener 5 can slide along the extension direction of the second mounting hole 201. The side plate component 21 is adjusted by sliding on the second fastener 5 with the base plate component 11 as the reference and through the second mounting hole 201. After the side plate component 21 is adjusted to the target position, the second fastener 5 is tightened again. Through the clamping force between the fastener head and the side plate component 21, the side plate component 21 is stably fixed at the current height, thus completing the adjustment of the support height of the measuring component 3. It should be explained that the vertical height of the outer wall of the rangefinder telescope 7 varies with different specifications. By adjusting the height of the side plate component 21 supporting the measuring component 3, it can be ensured that the pointer 31 of the measuring component 3 can smoothly reach the effective measuring area of ​​the outer wall of the rangefinder telescope 7, avoiding the pointer 31 not being able to contact or the position being deviated due to height mismatch, thereby enabling stable measurement of more models and specifications of rangefinder telescope 7.

[0055] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0056] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0057] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process. Furthermore, the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functionality involved.

[0058] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus or device (such as a computer-based system, a processor-included system or other system that can fetch and execute instructions from, an instruction execution system, apparatus or device).

[0059] It should be understood that various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. All or part of the steps of the methods in the above embodiments can be implemented by a program instructing related hardware, the program being stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiments.

[0060] Furthermore, the functional units in the various embodiments of this application can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into a module. The integrated module can be implemented in hardware or as a software functional module. If the integrated module is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. This storage medium can be a read-only memory, a disk, or an optical disk, etc.

[0061] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this application, and these should all be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A center distance measuring device for a total station rangefinder telescope, characterized in that, include: A first mounting base is used to position and place a rangefinder telescope in a plug-in manner, and to make the axis of the rangefinder telescope perpendicular to the first mounting base. A second mounting base is connected to one side of the first mounting base; and, A measuring component is mounted on the second mounting base, the measuring component having a pointer for abutting against the rangefinding telescope, the direction of abutting of the pointer being perpendicular to the axis of the rangefinding telescope; When the pointer touches the outer wall of the ranging telescope, the pointer extends or retracts towards the interior of the measuring component to obtain the distance between the axis of the ranging telescope and the outer wall of the ranging telescope through the displacement of the pointer.

2. The center distance measuring device for a total station rangefinder telescope according to claim 1, characterized in that, The first mounting base includes: The base plate component has a plate-like structure, and a first mounting hole is provided on the base plate component; The spindle component is detachably mounted to the upper surface of the base plate component through the first mounting hole, and is used to insert into the center hole of the rangefinding telescope.

3. The center distance measuring device for a total station rangefinder telescope according to claim 2, characterized in that, Also includes: First fastener; The bottom of the mandrel component is provided with a first threaded hole; Wherein, the mandrel component is located on the base plate component, and when the first threaded hole is aligned with the first mounting hole, the first fastener passes through the first mounting hole and is screwed into the first threaded hole to fix the mandrel component to the upper surface of the base plate component.

4. The center distance measuring device for a total station rangefinder telescope according to claim 3, characterized in that, The first mounting hole is configured as an elongated hole extending in a direction close to or away from the second mounting base, and the first fastener is slidable in the first mounting hole to adjust the spacing between the mandrel component and the second mounting base.

5. The center distance measuring device for a total station rangefinder telescope according to claim 1, characterized in that, The second mounting base includes: The side plate component has a plate-like structure, and the side plate component is provided with a second mounting hole and a second threaded hole; The side plate component is vertically mounted on one side of the first mounting base through the second mounting hole; A flange has a lug and a mounting portion, the lug being mounted on the side plate component via a second threaded hole, the mounting portion being positioned above the side plate component by the support of the lug, and the measuring component being detachably mounted on the mounting portion.

6. The center distance measuring device for a total station rangefinder telescope according to claim 5, characterized in that, Also includes: A second fastener passes through the second mounting hole and is screwed into the first mounting base in a threaded manner to fix the side plate component to one side of the first mounting base; A third fastener passes through the lug and is screwed into the second threaded hole to secure the lug to the side plate component.

7. The center distance measuring device for a total station rangefinder telescope according to claim 6, characterized in that, The second mounting hole is configured as an elongated hole near or away from the measuring component, and the second fastener is slidable in the second mounting hole to adjust the height at which the side plate component supports the measuring component on the first mounting base.

8. The center distance measuring device for a total station rangefinder telescope according to claim 1, characterized in that, The measuring component is set as a pointer-type dial indicator.

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