Hand-held range finder for land engineering survey

Abstract

The utility model relates to the technical field of hand-held range finders, and discloses a land engineering surveying hand-held range finder, which comprises a hand-held range finder body and a display screen, one end of the hand-held range finder body is provided with two groups of laser objective lenses, and one side of each of the two groups of laser objective lenses is fixedly connected with a threaded ring. And the surface of the threaded ring is in threaded connection with a protective cover. According to the land engineering surveying handheld range finder, through the arrangement of the cleaning assembly, when the range finder needs to be used, a rotating disc is pushed to expose an opening groove part in a protective cover, so that the rotating disc and a rotating column rotate in the protective cover, the rotating disc drives a supporting frame, and then a sponge wiper on the supporting frame is driven; the sponge eraser is tightly attached to the surface of the laser objective lens during closing, so that the sponge eraser wipes the surface of the laser objective lens, the effect of cleaning the surface of the laser objective lens is achieved, dust and other impurities are prevented from falling on the surface of the laser objective lens, the observation effect is prevented from being affected, the service life of the range finder is prolonged, and the measurement precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of handheld distance measuring instruments, in particular to a handheld distance measuring instrument for land engineering surveying. Background Art

[0002] A handheld rangefinder is a tool widely used in land engineering surveying. It shoots a thin laser beam at the target, and a photoelectric element receives the laser beam reflected by the target. A timer measures the time from the laser beam's emission to its reception, thereby calculating the distance from the observer to the target. It can measure distances quickly and accurately. Its handheld design is lightweight and easy to carry, making it suitable for field surveying. A handheld rangefinder is an indispensable tool in land engineering surveying. With its high efficiency and precision, it provides great convenience for various surveying tasks.

[0003] In actual use, the existing handheld distance meter for land engineering surveying is not convenient for adjusting the position of the display screen, which easily causes poor viewing angle and difficulty in reading.

[0004] After searching the existing patents: a handheld rangefinder (Announcement No.: CN215986480U), including a rangefinder body, a groove is provided on one side of the rangefinder body, a ranging probe is provided inside the groove, and protective cover plates are slidably connected to the two side walls of the groove. Two sets of fixing rods are provided on the side of the protective cover plate close to the ranging probe, and the fixing rods are located on both sides of the protective cover plate away from the ranging probe. A claw is provided on one side of the fixing rod, and a clamping portion is provided on one side of the protective cover plate. A limit rod cooperating with the claw is provided between the two side walls of the groove. The utility model discloses a handheld rangefinder that prevents the ranging probe from being exposed to the outside world for a long time and contaminated with dust, affecting its use, and is protected from damage when impacted by external force.

[0005] Although the above patent prevents the distance measuring probe from being exposed to the outside world for a long time and being contaminated by dust, which affects its use, and protects the handheld rangefinder from being damaged when it is hit by external forces, it is not convenient to clean the surface of the laser objective lens, making it easy for dust and other impurities to fall on the surface of the laser objective lens, affecting the observation effect.

[0006] Therefore, it is necessary to invent a land engineering surveying handheld rangefinder to solve the above problems. Utility Model Content

[0007] (1) Technical problems solved

[0008] The technical problem solved by the utility model is to provide a handheld rangefinder for land engineering measurement that is highly practical, can be easily operated, and has a relatively simple structure. It solves the problem in the above-mentioned background technology that it is inconvenient to clean the surface of the laser objective lens, which makes it easy for dust and other impurities to fall on the surface of the laser objective lens, affecting the observation effect.

[0009] (2) Technical solution

[0010] To achieve the above objectives, the present invention is implemented through the following technical solutions: a handheld rangefinder for land engineering measurement, comprising a handheld rangefinder body and a display screen, wherein one end of the handheld rangefinder body is provided with two groups of laser objective lenses, one side of the two groups of laser objective lenses is fixedly connected to a threaded ring, the surface of the threaded ring is threadedly connected to a protective cover, a cleaning assembly is rotatably connected to the surface of the display screen, two groups of extension rods are slidably connected to the inside of one side of the display screen, one end of the extension rod is fixedly connected to a connecting sleeve, one side of the connecting sleeve is fixedly connected to a positioning assembly, the cleaning assembly comprises a rotating column rotatably connected to the inside of the protective cover, a rotating disk is sleeved on the surface of the rotating column, one side of the rotating disk is fixedly connected to a support frame, and a sponge is fixedly connected to the surface of the support frame; the protective assembly comprises two groups of sliding columns slidably connected to the surface of the display screen, the top surface of the sliding column is fixedly connected to the sliding cover; the positioning assembly comprises a positive magnetic block fixedly connected to one side of the connecting sleeve, and the surface of the positive magnetic block is magnetically connected to the negative magnetic block.

[0011] As a further solution of the present invention, a sliding hole adapted to the extension rod is provided inside the display screen, and sliding grooves adapted to the sliding column are provided on the top and bottom of the display screen, and the sliding grooves facilitate the sliding of the sliding column.

[0012] As a further solution of the present invention, a rotating rod is sleeved inside the connecting sleeve, and the rotating rod is rotatably connected to one side of the handheld rangefinder body, so that the rotating rod can drive the connecting sleeve to rotate.

[0013] As a further solution of the present invention, a groove adapted to the display screen is provided on one side of the handheld rangefinder body, and an open slot adapted to the rotating disk is provided on one side of the protective cover, the open slot facilitating the pushing of the rotating disk.

[0014] As a further solution of the present invention, two sets of fixing blocks are fixedly connected to the other side of the handheld rangefinder body, and the fixing blocks are rotatably connected to connecting rings inside, which facilitate the connection between the fixing blocks and the straps.

[0015] As a further solution of the present invention, a strap is rotatably connected to the surface of the connecting ring. The strap is made of nylon and facilitates the handheld rangefinder to remain stable.

[0016] As a further solution of the present invention, an observation eyepiece is fixedly connected to one side of the handheld rangefinder body, and two groups of adjustment buttons are fixedly connected to the top of the handheld rangefinder body, and the adjustment buttons are convenient for adjusting the rangefinder value.

[0017] (3) Beneficial effects

[0018] The utility model provides a handheld distance meter for land engineering surveying, which has the following beneficial effects:

[0019] 1. The land engineering surveying handheld rangefinder is provided with a cleaning component. When the rangefinder needs to be used, the rotating disk is pushed to expose the open slot on the protective cover, so that the rotating disk and the rotating column rotate inside the protective cover. The rotating disk drives the support frame, and then drives the sponge on the support frame. Since the sponge is in close contact with the surface of the laser objective lens, the sponge wipes the surface of the laser objective lens, thereby achieving the effect of cleaning the surface of the laser objective lens, preventing dust and other impurities from falling on the surface of the laser objective lens and affecting the observation effect, thereby improving the service life and measurement accuracy of the rangefinder.

[0020] 2. The handheld rangefinder for land engineering measurement is provided with a protective component, a positioning component and an extension rod. When in use, the display screen is pulled to make the rotating rod on the connecting sleeve rotate in the groove of the handheld rangefinder body, and then the positive magnetic block and the negative magnetic block on the connecting sleeve are magnetically attracted to each other and limited. Then, according to personal preference and observation position, the display screen is pulled to slide a suitable distance on the extension rod. At the same time, the sliding cover is pulled to make the sliding column slide in the sliding groove on the display screen, thereby achieving the effect of adjusting the display screen position, allowing users to observe measurement data more conveniently, reducing the difficulty of reading due to poor viewing angle, and improving the flexibility of the handheld rangefinder for land engineering measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the split structure of the utility model;

[0023] Figure 3 This is a schematic diagram of the cleaning component structure of the utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the protection component and positioning component of the utility model.

[0025] In the figure: 1. Handheld rangefinder body; 2. Laser objective lens; 3. Threaded ring; 4. Protective cover; 5. Cleaning assembly; 501. Rotating column; 502. Rotating disk; 503. Support frame; 504. Sponge; 6. Display screen; 7. Protective assembly; 701. Sliding column; 702. Sliding cover; 8. Extension rod; 9. Connecting sleeve; 10. Positioning assembly; 1001. Positive magnetic block; 1002. Negative magnetic block; 11. Rotating rod; 12. Fixed block; 13. Connecting ring; 14. Strap; 15. Observation eyepiece; 16. Adjustment button. DETAILED DESCRIPTION

[0026] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0027] See also Figures 1 to 4 The utility model provides a technical solution: a handheld rangefinder for land engineering measurement, comprising a handheld rangefinder body 1 and a display screen 6. Two groups of laser objective lenses 2 are provided at one end of the handheld rangefinder body 1. One side of the two groups of laser objective lenses 2 is fixedly connected with a threaded ring 3. The surface of the threaded ring 3 is threadedly connected with a protective cover 4. The inside of the protective cover 4 is rotatably connected with a cleaning component 5. Through the setting of the cleaning component 5, the effect of cleaning the surface of the laser objective lens 2 is achieved, preventing dust and other impurities from falling on the surface of the laser objective lens 2 and affecting the observation effect, thereby improving the service life and measurement accuracy of the rangefinder. The surface of the display screen 6 is slidably connected with a protective component 7. Through the setting of the protective component 7, the positioning component 10 and the extension rod 8, the effect of adjusting the position of the display screen 6 is achieved, so that the user can observe the measurement data more conveniently and reduce the reading caused by poor viewing angle. The number of difficulties is improved, and the flexibility of the handheld rangefinder for land engineering measurement is improved. Two groups of extension rods 8 are slidably connected to the inside of one side of the display screen 6. One end of the extension rod 8 is fixedly connected to a connecting sleeve 9, and one side of the connecting sleeve 9 is fixedly connected to a positioning assembly 10. The cleaning assembly 5 includes a rotating column 501 rotatably connected to the inside of the protective cover 4, and a rotating disk 502 is sleeved on the surface of the rotating column 501. A support frame 503 is fixedly connected to one side of the rotating disk 502, and a sponge 504 is fixedly connected to the surface of the support frame 503; the protective assembly 7 includes two groups of sliding columns 701 slidably connected to the surface of the display screen 6, and the top surface of the sliding column 701 is fixedly connected to the sliding cover 702; the positioning assembly 10 includes a positive magnetic block 1001 fixedly connected to one side of the connecting sleeve 9, and the surface of the positive magnetic block 1001 is magnetically connected to the negative magnetic block 1002.

[0028] A sliding hole adapted to the extension rod 8 is provided inside the display screen 6, and a sliding groove adapted to the sliding column 701 is provided on the top and bottom of the display screen 6. The setting of the sliding groove facilitates the sliding of the sliding column 701.

[0029] A rotating rod 11 is sleeved inside the connecting sleeve 9 , and the rotating rod 11 is rotatably connected to one side of the handheld rangefinder body 1 . The setting of the rotating rod 11 drives the connecting sleeve 9 to rotate.

[0030] A groove adapted to the display screen 6 is provided on one side of the handheld rangefinder body 1 , and an opening slot adapted to the rotating disk 502 is provided on one side of the protective cover 4 . The setting of the opening slot facilitates pushing the rotating disk 502 .

[0031] Two sets of fixing blocks 12 are fixedly connected to the other side of the handheld rangefinder body 1 . A connecting ring 13 is rotatably connected inside the fixing block 12 . The connecting ring 13 connects the fixing block 12 and the binding strap 14 .

[0032] The surface of the connecting ring 13 is rotatably connected with a strap 14 , which is made of nylon. The arrangement of the strap 14 facilitates the handheld rangefinder to remain stable.

[0033] An observation eyepiece 15 is fixedly connected to one side of the handheld rangefinder body 1, and two groups of adjustment buttons 16 are fixedly connected to the top of the handheld rangefinder body 1. By setting the adjustment buttons 16, the rangefinder value is adjusted.

[0034] In the present invention, the working steps of the device are as follows:

[0035] Step 1: When the rangefinder is needed, the rotating disk 502 is pushed to expose the open slot on the protective cover 4, so that the rotating disk 502 and the rotating column 501 rotate inside the protective cover 4. The rotating disk 502 drives the support frame 503, and then drives the sponge 504 on the support frame 503. Since the sponge 504 is in close contact with the surface of the laser objective lens 2 when closed, the sponge 504 wipes the surface of the laser objective lens 2;

[0036] Step 2: When in use, pull the display screen 6, so that the rotating rod 11 on the connecting sleeve 9 rotates in the groove of the handheld rangefinder body 1, and then the positive magnetic block 1001 and the negative magnetic block 1002 on the connecting sleeve 9 are magnetically attracted to each other and limited;

[0037] Step 3: According to personal preference and observation position, pull the display screen 6 on the extension rod 8 to slide a suitable distance, and at the same time pull the sliding cover 702 to make the sliding column 701 slide in the sliding groove on the display screen 6.

[0038] It should be noted that the device structure and drawings of the present invention mainly describe the principle of the present invention. In terms of the technology of the design principle, the settings of the device's power mechanism, power supply system, and control system are not fully described. However, those skilled in the art can clearly understand the details of its power mechanism, power supply system, and control system on the premise that they understand the principle of the above-mentioned utility model. The control method of the application document is automatic control through a controller, and the control circuit of the controller can be implemented by simple programming by those skilled in the art.

[0039] The standard parts used can be purchased from the market and can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the components known to technical personnel in this field, their structures and principles can be known to these technical personnel through technical manuals or through conventional experimental methods.

[0040] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A handheld distance meter for land engineering surveying, comprising a handheld distance meter body (1) and a display screen (6), characterized in that: One end of the handheld rangefinder body (1) is provided with two groups of laser objective lenses (2), one side of the two groups of laser objective lenses (2) is fixedly connected with a threaded ring (3), the surface of the threaded ring (3) is threadedly connected with a protective cover (4), the interior of the protective cover (4) is rotatably connected with a cleaning component (5), the surface of the display screen (6) is slidably connected with a protective component (7), the interior of one side of the display screen (6) is slidably connected with two groups of extension rods (8), one end of the extension rod (8) is fixedly connected with a connecting sleeve (9), and one side of the connecting sleeve (9) is fixedly connected with a positioning component (10). The cleaning assembly (5) comprises a rotating column (501) rotatably connected to the interior of the protective cover (4); a rotating disk (502) is sleeved on the surface of the rotating column (501); a support frame (503) is fixedly connected to one side of the rotating disk (502); and a sponge (504) is fixedly connected to the surface of the support frame (503); The protective component (7) comprises two sets of sliding columns (701) slidably connected to the surface of the display screen (6), and the top surfaces of the sliding columns (701) are fixedly connected to a sliding cover (702); The positioning assembly (10) comprises a positive pole magnetic block (1001) fixedly connected to one side of the connecting sleeve (9), and a negative pole magnetic block (1002) is magnetically connected to the surface of the positive pole magnetic block (1001).

2. The handheld distance meter for land engineering surveying according to claim 1, characterized in that: The interior of the display screen (6) is provided with a sliding hole adapted to the extension rod (8), and the top and bottom of the display screen (6) are both provided with sliding grooves adapted to the sliding column (701).

3. The handheld distance meter for land engineering surveying according to claim 1, characterized in that: A rotating rod (11) is sleeved inside the connecting sleeve (9), and the rotating rod (11) is rotatably connected to one side of the handheld rangefinder body (1).

4. The handheld distance meter for land engineering surveying according to claim 1, characterized in that: A groove adapted to the display screen (6) is provided on one side of the handheld rangefinder body (1), and an opening slot adapted to the rotating disk (502) is provided on one side of the protective cover (4).

5. The handheld distance meter for land engineering surveying according to claim 1, characterized in that: Two groups of fixed blocks (12) are fixedly connected to the other side of the handheld rangefinder body (1), and a connecting ring (13) is rotatably connected inside the fixed block (12).

6. The handheld distance meter for land engineering surveying according to claim 5, characterized in that: The surface of the connecting ring (13) is rotatably connected with a binding strap (14), and the material of the binding strap (14) is nylon.

7. The handheld distance meter for land engineering surveying according to claim 1, characterized in that: An observation eyepiece (15) is fixedly connected to one side of the handheld rangefinder body (1), and two groups of adjustment buttons (16) are fixedly connected to the top of the handheld rangefinder body (1).

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