Surveying instrument
By introducing a fine-tuning structure into the rangefinder and utilizing the threaded connection of the collar and the interference ring as well as the plug-in rod design, the problem of inaccurate position of the sliding rod is solved, and the accurate distance measurement effect of the ranging head is achieved.
Patent Information
- Application Number
- CN202422887862.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-09-09
- Estimated Expiration
- 2034-11-26
AI Technical Summary
In existing rangefinders, the position adjustment force of the sliding rod is difficult to control, resulting in inaccurate vertical position of the rangefinder head.
The fine-tuning structure is adopted, including a collar and a resistance ring. Through the cooperation of threaded connection and plug rod, the precise fine-tuning of the sliding rod is achieved. Combined with the design of guide groove and guide block, the position of the sliding rod is ensured to be accurately adjusted.
The precise adjustment of the sliding rod position is achieved, thereby improving the ranging accuracy and stability of the ranging head.
Smart Images
Figure CN223318795U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of surveying and mapping instruments, and more specifically, to a surveying and mapping instrument. Background Art
[0002] Surveying and mapping instruments are devices used to measure and record geographic spatial data. They are widely used in surveying, exploration, engineering design and other fields. There are many types of surveying and mapping instruments, and rangefinder is one of them.
[0003] A rangefinder is a device used to accurately measure the distance between objects. Some existing rangefinders include a bracket and a rangefinder head. The bracket is provided with a sleeve, and a sliding rod arranged in a vertical direction is slidably connected in the sleeve. The rangefinder head is mounted on the sliding rod. People adjust the height of the rangefinder head by sliding the sliding rod, so that the rangefinder head can adapt to different distance measurement scenarios. However, the position of the sliding rod is generally adjusted directly by applying force to the sliding rod by hand. The force of the sliding rod directly sliding by hand is difficult to control, which may result in the vertical position of the rangefinder head being inaccurate.
[0004] Therefore, new solutions need to be proposed to solve this problem. Utility Model Content
[0005] In view of the deficiencies in the prior art, the present invention aims to provide a surveying and mapping instrument.
[0006] The above technical purpose of the present utility model is achieved through the following technical solutions: a surveying instrument, including a bracket and a ranging head, a sleeve is provided on the bracket, a sliding rod is slidably connected in the sleeve, the ranging head is installed on the top of the sliding rod, a fine-tuning part is slidably connected to the sliding rod, the fine-tuning part includes a collar and a resistance ring, the resistance ring is threadedly connected to the outer peripheral wall of the collar, the lower end of the resistance ring is used to resist the top surface of the sleeve, a plurality of positioning holes are opened on the sliding rod, and the plurality of positioning holes are arranged in a linear array in the length direction of the sliding rod, and a rod for inserting into the positioning holes is slidably connected to the collar.
[0007] The utility model is further configured as follows: a guide groove is provided on the outer peripheral wall of the sliding rod, the guide groove is arranged along the length direction of the sliding rod, and the collar is provided with a guide block which is always located in the guide groove.
[0008] The utility model is further configured such that: the maximum static friction force between the sliding rod and the sleeve is less than the sum of the gravity of the sliding rod and the distance measuring head.
[0009] The utility model is further configured as follows: an external threaded portion is provided on the outer peripheral wall of the collar, an internal threaded portion is provided on the inner peripheral wall of the interference ring, a limiting ring is provided on the outer peripheral wall of the collar and is located above the external threaded portion, and there is a distance between the internal threaded portion and the lower side of the interference ring.
[0010] The utility model is further configured as follows: a sliding hole is opened on the outer peripheral wall of the limiting ring, the insertion rod slides in the sliding hole, and the collar is configured to be transparent.
[0011] The utility model is further configured as follows: a guide hole connected to the positioning hole is opened on the outer peripheral wall of the sliding rod, the diameter of the guide hole becomes smaller as it approaches the positioning hole, and the end of the insertion rod facing the sliding rod is in an arc shape.
[0012] In summary, the present invention has the following beneficial effects:
[0013] When people need to adjust the position of the sliding rod in the sleeve, they first apply force to the sliding rod by hand to make the sliding rod slide up and down in the sleeve to perform rough adjustment of the sliding rod position. When people slide the sliding rod to a position close to the correct position, they fix the fine-tuning piece connected to the sliding rod, and make the fine-tuning piece close to the correct position by inserting the insertion rod into the positioning hole close to the correct position. At this time, the lower end of the interference ring contacts the top surface of the sleeve, and people rotate the interference ring clockwise or counterclockwise to make the interference ring move up and down along the sleeve. The upper and lower positions of the sliding rod can be fine-tuned by screw rotation adjustment, so that the position of the sliding rod is more accurate, thereby ensuring the ranging effect of the ranging head. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a structural diagram of the utility model;
[0015] Figure 2 It is a partial cross-sectional view of the utility model;
[0016] Figure 3 for Figure 2 Enlarged view of part A in the middle.
[0017] In the figure: 1. bracket; 2. distance measuring head; 3. sleeve; 4. sliding rod; 5. collar; 6. contact ring; 7. positioning hole; 8. insertion rod; 9. guide groove; 10. guide block; 11. limit ring; 12. sliding hole; 13. guide hole. DETAILED DESCRIPTION
[0018] The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
[0019] A surveying instrument, such as Figure 1 and Figure 2As shown, it includes a bracket 1 and a ranging head 2, a sleeve 3 is provided on the bracket 1, a sliding rod 4 is slidably connected in the sleeve 3, the ranging head 2 is installed on the top of the sliding rod 4, and a fine-tuning part is slidably connected on the sliding rod 4, the fine-tuning part includes a collar 5 and a resistance ring 6, the resistance ring 6 is threadedly connected to the outer peripheral wall of the collar 5, and the lower end of the resistance ring 6 is used to resist the top surface of the sleeve 3, a plurality of positioning holes 7 are provided on the sliding rod 4, and the plurality of positioning holes 7 are arranged in a linear array in the length direction of the sliding rod 4, and a plug 8 for inserting the positioning hole 7 is slidably connected on the collar 5, and people achieve pre-positioning of the fine-tuning part by inserting the plug 8 into the positioning hole 7, and a threaded hole is provided on the outer peripheral wall of the sleeve 3, and a bolt for resisting the sliding rod 4 is threaded in the threaded hole. People limit the sliding rod 4 in the sleeve 3 by tightening the bolt, and when people need to adjust the sliding rod 4 in the sleeve When the cam 5 is in the correct position, people first apply force to the sliding rod 4 by hand to make the sliding rod 4 slide up and down in the sleeve 3 to perform rough adjustment of the position of the sliding rod 4. When the sliding rod 4 is slid close to the correct position, people fix the fine-tuning piece connected to the sliding rod 4. People make the fine-tuning piece close to the correct position by inserting the insertion rod 8 into the positioning hole 7 close to the correct position. At this time, the lower end of the interference ring 6 conflicts with the top surface of the sleeve 3. At this time, people rotate the interference ring 6 clockwise or counterclockwise to make the interference ring 6 move up and down along the collar 5. The fine-tuning of the upper and lower positions of the sliding rod 4 can be achieved by screw rotation adjustment, thereby making the position of the sliding rod 4 more accurate and ensuring the ranging effect of the ranging head 2. After the fine-tuning of the sliding rod 4 is completed, people tighten the bolt so that the bolt tightens the sliding rod 4, thereby ensuring the fixing effect of the sliding rod 4.
[0020] like Figure 2 and Figure 3 As shown, a guide groove 9 is provided on the outer peripheral wall of the sliding rod 4, and the guide groove 9 is arranged along the length direction of the sliding rod 4. A guide block 10 is provided on the collar 5 that is always located in the guide groove 9. The collar 5 slides up and down along the guide groove 9. The setting of the guide groove 9 can limit the rotation of the collar 5 on the sliding rod 4, so that when the collar 5 slides up and down, the insertion rod 8 can align with the positioning hole 7 on the sliding rod 4. The maximum static friction between the sliding rod 4 and the sleeve 3 is less than the sum of the gravity of the sliding rod 4 and the ranging head 2. This setting ensures that the collar 5 can be fine-tuned. During the process of knotting, the lower end of the interference ring 6 always conflicts with the upper end of the sleeve 3, an external threaded portion is provided on the outer peripheral wall of the ring 5, an internal threaded portion is provided on the inner peripheral wall of the interference ring 6, and a limiting ring 11 is provided on the outer peripheral wall of the ring 5 above the external threaded portion. There is a distance between the internal threaded portion and the lower side of the interference ring 6. The limiting ring 11 can limit the interference ring 6 from being screwed out upward, and the internal threaded portion is not connected to the lower end of the interference ring 6, so that the interference ring 6 cannot be screwed out downward. This arrangement ensures that the interference ring 6 and the ring 5 will not separate.
[0021] like Figure 2 and Figure 3As shown, a sliding hole 12 is provided on the outer peripheral wall of the limiting ring 11, and the insertion rod 8 slides in the sliding hole 12. The collar 5 is transparent. The sliding hole 12 is provided on the limiting ring 11, so that the hole depth of the sliding hole 12 is relatively deep. The collar 5 is transparent, so that people can observe the position of the positioning hole 7 and the alignment of the insertion rod 8 and the positioning hole 7 through the upper end of the collar 5. A guide hole 13 connected to the positioning hole 7 is provided on the outer peripheral wall of the sliding rod 4. The diameter of the guide hole 13 becomes smaller as it approaches the positioning hole 7. The end of the insertion rod 8 facing the sliding rod 4 is in an arc shape. When the insertion rod 8 is inserted into the guide hole 13, the arc-shaped end of the insertion rod 8 will conflict with the oblique inner wall of the guide hole 13, thereby guiding the insertion rod 8 into the positioning hole 7, further facilitating the insertion of the insertion rod 8.
[0022] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.
Claims
1. A surveying instrument, comprising a bracket (1) and a distance measuring head (2), wherein a sleeve (3) is provided on the bracket (1), a sliding rod (4) is slidably connected in the sleeve (3), and the distance measuring head (2) is mounted on the top end of the sliding rod (4), characterized in that: The sliding rod (4) is slidably connected to a fine-tuning member, the fine-tuning member comprising a collar (5) and a contact ring (6), the contact ring (6) being threadedly connected to the outer peripheral wall of the collar (5), the lower end of the contact ring (6) being used to contact the top surface of the sleeve (3), the sliding rod (4) being provided with a plurality of positioning holes (7), the plurality of positioning holes (7) being arranged in a linear array in the longitudinal direction of the sliding rod (4), the collar (5) being slidably connected to an insertion rod (8) for inserting into the positioning holes (7).
2. A surveying and mapping instrument according to claim 1, characterized in that: A guide groove (9) is provided on the outer peripheral wall of the sliding rod (4), and the guide groove (9) is arranged along the length direction of the sliding rod (4). The collar (5) is provided with a guide block (10) that is always located in the guide groove (9).
3. A surveying and mapping instrument according to claim 2, characterized in that: The maximum static friction force between the sliding rod (4) and the sleeve (3) is less than the sum of the weights of the sliding rod (4) and the distance measuring head (2).
4. A surveying and mapping instrument according to claim 3, characterized in that: An external threaded portion is provided on the outer peripheral wall of the collar (5), an internal threaded portion is provided on the inner peripheral wall of the abutment ring (6), and a limiting ring (11) is provided on the outer peripheral wall of the collar (5) and is located above the external threaded portion, with a distance between the internal threaded portion and the lower side of the abutment ring (6).
5. A surveying and mapping instrument according to claim 4, characterized in that: A sliding hole (12) is provided on the outer peripheral wall of the limiting ring (11), the inserting rod (8) slides in the sliding hole (12), and the collar (5) is provided in a transparent shape.
6. A surveying and mapping instrument according to claim 5, characterized in that: A guide hole (13) communicating with the positioning hole (7) is provided on the outer peripheral wall of the sliding rod (4). The diameter of the guide hole (13) decreases as it approaches the positioning hole (7). One end of the insertion rod (8) facing the sliding rod (4) is in an arc shape.