Engineering surveying handheld range finder
By introducing a counterweight adjustment mechanism and a grip assembly into the handheld rangefinder to control the horizontal or vertical state of the laser probe, the problem of large measurement errors in the prior art is solved, and the measurement accuracy and flexibility are improved.
Patent Information
- Application Number
- CN202420757145.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-12
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-04-12
AI Technical Summary
When performing long-distance measurements, the horizontal or vertical state of the laser beam depends on the direction angle of the user's handheld, resulting in large data errors and serious interference in hand shaking, which affects the measurement accuracy.
A hand-held rangefinder including a housing, grip assembly, counterweight adjustment mechanism and docking assembly is designed. The horizontal or vertical state of the laser probe is controlled through the counterweight adjustment mechanism to ensure that the laser beam always remains horizontal or vertical, and lower the hand. Angle shaking interference and the illumination angle of the laser probe is regulated by flexible grip assembly.
Improves the accuracy and flexibility of measurement, ensuring that the laser beam always remains horizontal or vertical during the measurement process, and reduces the impact of hand angle shaking on the measurement results.
Smart Images
Figure CN222211719U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of engineering measurement, in particular to a handheld distance meter for engineering measurement. Background Art
[0002] A rangefinder is an instrument used for distance measurement. It emits a very thin laser beam to the target, and the photoelectric element receives the laser beam reflected by the target to calculate the distance of the target. According to the prior art, such as the Chinese patent document CN202220619247.1, a handheld rangefinder for land engineering measurement, the disclosed technical solution, through the provided bracket, hand-held rod and support base, can facilitate personnel to hold the rangefinder for distance measurement operations. By placing the support base on the desktop, the rangefinder can also be placed at an angle, which can facilitate personnel to record the measurement data on the display screen.
[0003] According to the technical solution disclosed by the user, the handheld rangefinder in the prior art installs a laser probe on the top of the instrument housing, and controls the direction of the laser probe by holding the rod at the rear end to measure the distance to the target point. Therefore, when used for horizontal and vertical measurements, whether the laser beam is in a horizontal or vertical state is completely controlled by the direction angle of the user's hand. For longer distances, even a slight tilt of the hand will cause the laser beam to produce a large error in the final measured data during the long-distance transmission process. On the other hand, the shaking of the hand will also interfere with the reading of the final data results. Utility Model Content
[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a handheld rangefinder for engineering measurement to solve the problems raised in the above-mentioned background technology. The utility model can control the laser probe to reach a completely horizontal or completely vertical state in a static state, and has higher flexibility.
[0005] In order to achieve the above-mentioned purpose, the utility model is realized through the following technical scheme: a handheld rangefinder for engineering measurement, comprising a rangefinder body, the rangefinder body comprising a shell, a grip assembly, a counterweight adjustment mechanism and a docking assembly, a laser probe is arranged at the front end of the shell, threaded columns are installed on both sides of the shell, the surfaces of the threaded columns are respectively connected to the front end of the grip assembly and the top end of the counterweight adjustment mechanism, a docking assembly is arranged at the rear end of the shell, the counterweight adjustment mechanism is embedded into the interior of the docking assembly after rotating around the threaded column, and the center of gravity of the shell is located at the midpoint of the two threaded columns.
[0006] Furthermore, the counterweight adjustment mechanism includes a connecting rod and a counterweight guide roller, both ends of the counterweight guide roller are provided with bosses, the ends of the bosses are fixed to the inner side of the bottom end of the connecting rod as a whole, and a docking ring is installed on the top of the connecting rod.
[0007] Furthermore, a limiting end plate is provided at the end of the threaded column, a threaded collar is sleeved on the surface of the threaded column, and a lever is connected to the side of the threaded collar.
[0008] Furthermore, the counterweight adjustment mechanism is sleeved on the surface of the threaded column through a docking collar, the end of the threaded column is welded and mounted on the shell of the outer shell, and the docking collar is clamped by the threaded collar and the limiting end plate.
[0009] Furthermore, the docking assembly includes an arc-shaped plate and a latch, a groove is provided on the inner side of the arc-shaped plate, an outer positioning hole is provided on the side of the arc-shaped plate, and an inner positioning hole is provided on the side of the counterweight guide roller.
[0010] Furthermore, the counterweight guide roller is embedded into the groove as the counterweight adjustment mechanism rotates, and the surface diameter of the counterweight guide roller is the same as the inner wall diameter of the groove, and the bayonet passes through the outer positioning hole and the inner positioning hole in sequence.
[0011] Furthermore, the holding assembly includes a handle and a bracket, a docking bearing is installed at the end of the bracket, and the inner ring part of the docking bearing is installed on the surface of the threaded column, and a connecting plate is provided at the other end of the bracket.
[0012] Furthermore, the bracket as a whole is a right-angle bending structure, the threaded ring moves along the threaded column and abuts against the side of the docking bearing, and the handle is installed on the side of the connecting plate.
[0013] Beneficial effects of the utility model:
[0014] The engineering measurement handheld rangefinder is provided with a threaded column on the side of the shell, and a counterweight adjustment mechanism is installed at the end of the threaded column. The counterweight adjustment mechanism is controlled to droop naturally and keep it vertical with the shell. The counterweight adjustment mechanism is fixedly combined with the shell with the help of a threaded ring. In the subsequent measurement process, the laser probe can always maintain a horizontal irradiation state, reducing the interference of hand angle shaking on horizontal measurement, thereby improving the accuracy of measurement.
[0015] This engineering surveying handheld rangefinder can transfer the center of the inside of the shell toward the rear end by controlling the rotation of the counterweight adjustment mechanism and connecting it with the docking assembly at the rear end. Therefore, when performing vertical measurements, this state can ensure that the laser beam can be irradiated vertically upward, so that both horizontal and vertical measurements can achieve higher accuracy.
[0016] The engineering measurement handheld rangefinder uses a threaded ring to rotate and squeeze on one side of the docking bearing, so that the grip component and the shell part can be fixed as a whole. At this time, the irradiation angle of the laser probe can be directly controlled through the grip component, and the angle between the shell and the handle can be flexibly adjusted when controlling the threaded ring to squeeze the docking bearing, thereby changing different gripping methods with higher flexibility. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic diagram of the structure of a handheld distance meter for engineering measurement according to the utility model;
[0018] Figure 2 It is a structural schematic diagram of the counterweight adjustment mechanism of the utility model;
[0019] Figure 3 It is a structural schematic diagram of the gripping component part of the utility model;
[0020] Figure 4 It is a structural schematic diagram of the docking assembly part of the utility model;
[0021] In the figure: 1. Shell; 2. Laser probe; 3. Holding assembly; 4. Counterweight adjustment mechanism; 5. Docking assembly; 6. Docking collar; 7. Connecting rod; 8. Counterweight guide roller; 9. Threaded column; 10. Limiting end plate; 11. Threaded collar; 12. Push rod; 13. Docking bearing; 14. Bracket; 15. Connecting plate; 16. Handle; 17. Arc plate; 18. External positioning hole; 19. Pin; 20. Groove; 21. Boss; 22. Internal positioning hole. DETAILED DESCRIPTION
[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.
[0023] See also Figures 1 to 4The utility model provides a technical solution: a handheld rangefinder for engineering measurement, comprising a rangefinder body, the rangefinder body comprising a shell 1, a grip assembly 3, a counterweight adjustment mechanism 4 and a docking assembly 5, a laser probe 2 is arranged at the front end of the shell 1, threaded columns 9 are installed on both sides of the shell 1, the surfaces of the threaded columns 9 are respectively connected to the front end of the grip assembly 3 and the top end of the counterweight adjustment mechanism 4, a docking assembly 5 is arranged at the rear end of the shell 1, the counterweight adjustment mechanism 4 is embedded in the interior of the docking assembly 5 after rotating around the threaded column 9, and the center of gravity of the shell 1 is between the two threaded columns 9 and the top end of the threaded column 9. At the middle point of column 9, the engineering measurement handheld rangefinder is picked up through the holding component 3, and the laser probe 2 at the front end of the shell 1 is controlled to irradiate the target point where the distance measurement is required, and the measurement process can be realized with the help of the laser beam generated by the laser probe 2, wherein the laser probe 2 is an existing mature technology. The laser probe 2 of the corresponding specification is selected according to the actual measurement range and installed at the front end of the shell 1 to generate a laser beam parallel to the surface of the shell 1. When performing horizontal or vertical measurements, the counterweight adjustment mechanism 4 at the bottom is controlled to rotate and change its initial position, so as to realize the control of the center of gravity position of the shell 1.
[0024] In this embodiment, the counterweight adjustment mechanism 4 includes a connecting rod 7 and a counterweight guide roller 8, and bosses 21 are provided at both ends of the counterweight guide roller 8. The ends of the bosses 21 are fixed to the inner side of the bottom end of the connecting rod 7 as a whole. A docking collar 6 is installed on the top of the connecting rod 7, and a limiting end plate 10 is provided at the end of the threaded column 9. The surface of the threaded column 9 is sleeved with a threaded collar 11, and the side of the threaded collar 11 is connected with a lever 12. The counterweight adjustment mechanism 4 is sleeved on the surface of the threaded column 9 through the docking collar 6, and the end of the threaded column 9 is welded and installed on the shell of the outer shell 1. The docking collar 6 is clamped by the threaded collar 11 and the limiting end plate 10. The counterweight adjustment mechanism 4 is controlled to droop naturally and maintain a vertical state with the outer shell 1 part. After the counterweight adjustment mechanism 4 is fixedly combined with the outer shell 1 with the help of the threaded collar 11, the laser probe 2 can be used in the subsequent measurement process. Always maintain a horizontal illumination state, reduce the interference of hand angle shaking on horizontal measurement, thereby improving the accuracy of measurement. Specifically, before performing horizontal measurement, loosen the threaded ring 11, and control the counterweight adjustment mechanism 4 to remain vertical with the top shell 1. After it is completely vertical, the threaded ring 11 can be rotated to cooperate with the limiting end plate 10 to clamp the docking ring 6 part. At this time, the shell 1 can rotate synchronously with the bottom counterweight adjustment mechanism 4. During subsequent measurements, since the holding component 3 is movably connected with the threaded column 9 through the docking bearing 13, and the center of gravity of the shell 1 moves downward due to the influence of the combined counterweight adjustment mechanism 4, the shell 1 will be pulled by the bottom counterweight adjustment mechanism 4 without external force, so that the shell 1 is always in a horizontal state. Even if the holding hand shakes at an angle, it can still be close to horizontal with the help of the center of gravity of the shell 1 and the bottom counterweight adjustment mechanism 4.
[0025] In this embodiment, the docking assembly 5 includes an arc plate 17 and a bayonet 19, a groove 20 is provided on the inner side of the arc plate 17, an outer positioning hole 18 is provided on the side of the arc plate 17, and an inner positioning hole 22 is provided on the side of the counterweight guide roller 8. The counterweight guide roller 8 is embedded in the groove 20 after the counterweight adjustment mechanism 4 rotates, and the surface diameter of the counterweight guide roller 8 is the same as the inner wall diameter of the groove 20. The bayonet 19 passes through the outer positioning hole 18 and the inner positioning hole 22 in turn. By controlling the rotation of the counterweight adjustment mechanism 4 and connecting with the docking assembly 5 at the rear end, the center of the interior of the housing 1 can be transferred toward the rear end, so when performing During vertical measurement, this state can be used to ensure that the laser beam can be irradiated vertically upward, so that both horizontal and vertical measurements can obtain higher accuracy. Specifically, after loosening the threaded collar 11, rotate the connecting rod 7 until the counterweight guide roller 8 at the end is rotated into the groove 20 on the inner side of the arc plate 17, and use the bayonet 19 to fix the counterweight guide roller 8, and then use the threaded collar 11 to clamp the docking collar 6. At this time, the weight of the counterweight adjustment mechanism 4 will be increased to the rear end of the shell 1. Therefore, when repeating the above-mentioned distance measurement process, the center of gravity moves backward, causing the rear end of the shell 1 to fall when there is no external force, while the laser probe 2 at the front end always irradiates vertically upward.
[0026] In this embodiment, the holding assembly 3 includes a handle 16 and a bracket 14, a docking bearing 13 is installed at the end of the bracket 14, and the inner ring portion of the docking bearing 13 is installed on the surface of the threaded column 9, and a connecting plate 15 is provided at the other end of the bracket 14. The bracket 14 is a right-angle bending structure as a whole, and the threaded collar 11 moves along the threaded column 9 and abuts against the side of the docking bearing 13. The handle 16 is installed on the side of the connecting plate 15. With the help of the threaded collar 11, it is rotated and squeezed on one side of the docking bearing 13, so that the holding assembly 3 and the shell 1 part can be fixed as a whole. At this time The irradiation angle of the laser probe 2 can be directly controlled through the holding component 3, and the angle between the shell 1 and the handle 16 can be flexibly adjusted when the threaded ring 11 is controlled to squeeze the docking bearing 13, so as to change different holding methods with higher flexibility. Specifically, after the threaded ring 11 is rotated to clamp the docking bearing 13, the counterweight adjustment mechanism 4 is connected to the docking component 5 according to the above process. At this time, since the docking bearing 13 is squeezed by the threaded ring 11 and combined with the shell 1 as a whole, the entire shell 1 can be driven to be controlled and used at any angle by rotating the handle 16.
[0027] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.
[0028] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. A handheld distance meter for engineering measurement, comprising a distance meter body, characterized in that: The rangefinder body comprises a housing (1), a gripping assembly (3), a counterweight adjustment mechanism (4) and a docking assembly (5); a laser probe (2) is arranged at the front end of the housing (1); threaded columns (9) are installed on both sides of the housing (1); surfaces of the threaded columns (9) are respectively connected to the front end of the gripping assembly (3) and the top end of the counterweight adjustment mechanism (4); a docking assembly (5) is arranged at the rear end of the housing (1); the counterweight adjustment mechanism (4) is embedded into the interior of the docking assembly (5) after rotating around the threaded columns (9); and the center of gravity of the housing (1) is located at the midpoint of the two threaded columns (9).
2. The engineering surveying handheld distance meter according to claim 1, characterized in that: The counterweight adjustment mechanism (4) comprises a connecting rod (7) and a counterweight guide roller (8), wherein both ends of the counterweight guide roller (8) are provided with bosses (21), the ends of the bosses (21) are fixed to the inner side of the bottom end of the connecting rod (7) as a whole, and a docking ring (6) is installed on the top of the connecting rod (7).
3. The engineering surveying handheld distance meter according to claim 2, characterized in that: A limiting end plate (10) is provided at the end of the threaded column (9), a threaded collar (11) is sleeved on the surface of the threaded column (9), and a lever (12) is connected to the side of the threaded collar (11).
4. The engineering surveying handheld distance meter according to claim 3, characterized in that: The counterweight adjustment mechanism (4) is sleeved on the surface of the threaded column (9) via a docking collar (6); the end of the threaded column (9) is welded and mounted on the shell of the outer shell (1); and the docking collar (6) is clamped by the threaded collar (11) and the limiting end plate (10).
5. The engineering surveying handheld distance meter according to claim 3, characterized in that: The docking assembly (5) comprises an arc-shaped plate (17) and a latch (19); a groove (20) is provided on the inner side of the arc-shaped plate (17); an outer positioning hole (18) is provided on the side of the arc-shaped plate (17); and an inner positioning hole (22) is provided on the side of the counterweight guide roller (8).
6. The engineering surveying handheld distance meter according to claim 5, characterized in that: The counterweight guide roller (8) is embedded in the groove (20) as the counterweight adjustment mechanism (4) rotates, and the surface diameter of the counterweight guide roller (8) is the same as the inner wall diameter of the groove (20). The bayonet (19) passes through the outer positioning hole (18) and the inner positioning hole (22) in sequence.
7. The engineering surveying handheld distance meter according to claim 3, characterized in that: The holding assembly (3) comprises a handle (16) and a bracket (14); a docking bearing (13) is installed at the end of the bracket (14); an inner ring portion of the docking bearing (13) is installed on the surface of the threaded column (9); and a connecting plate (15) is provided at the other end of the bracket (14).
8. The engineering surveying handheld distance meter according to claim 7, characterized in that: The bracket (14) is an overall right-angle bent structure, the threaded collar (11) moves along the threaded column (9) and abuts against the side of the docking bearing (13), and the handle (16) is mounted on the side of the connecting plate (15).