Range finder for real estate surveying and mapping

Abstract

The utility model relates to the technical field of distance measuring equipment, in particular to a distance measuring instrument for real estate surveying and mapping. The device comprises a round frame, a groove is formed in the inner wall of the round frame, a plurality of supporting rods are slidably connected into the groove and can do circular motion in the groove, the other ends of the supporting rods are fixedly connected with a round plate, a range finder body is fixedly connected to the top of the round plate, a plurality of supports are fixedly connected to the lower portion of the round frame, and the supports are fixedly connected to the lower portion of the round frame. The support is of a hollow structure, and supporting legs are connected to the lower portion of the support in a sliding mode. According to the range finder, the supporting rods do circular motion in the circular frame, all-directional observation of the range finder is achieved, the measurement range of the range finder is greatly widened, the supporting legs capable of being telescopically adjusted are additionally arranged, the range finder can work normally on the ground with the large fall, and the use range of the range finder is widened.

Description

Technical Field

[0001] The utility model relates to the technical field of distance measuring equipment, in particular to a distance measuring instrument for real estate surveying and mapping. Background Art

[0002] A rangefinder is a tool for measuring length or distance. It can also be combined with an angle measuring device or module to measure parameters such as angle and area. There are many forms of rangefinders, usually a long cylinder, consisting of an objective lens, an eyepiece, a display device (which can be built-in), a battery, and other parts. A laser rangefinder can also emit multiple laser pulses to determine whether an object is moving away from or approaching a light source through the Doppler effect. The accuracy of a laser rangefinder mainly depends on the accuracy of the instrument's calculation of the time between the laser emission and the reception. According to the technology used and the application occasions, laser rangefinders can be divided into conventional laser rangefinders with an accuracy of about 1 meter (mainly used for outdoor sports, hunting, etc.) and high-precision laser rangefinders used in surveying and mapping, land measurement, construction, engineering applications, military, and other occasions with high accuracy requirements. Laser rangefinders generally use two methods to measure distance: pulse method and phase method. The process of pulse distance measurement is as follows: the laser emitted by the rangefinder is reflected by the object to be measured and then received by the rangefinder, and the rangefinder also records the time of the laser round trip. Half of the product of the speed of light and the round-trip time is the distance between the rangefinder and the object being measured. The accuracy of the pulse method for measuring distance is generally around + / -1 meter. In addition, the measurement blind area of ​​this type of rangefinder is generally around 15 meters. The phase-type laser rangefinder uses the frequency of the radio band to modulate the amplitude of the laser beam and measure the phase delay caused by the modulated light going back and forth once. Then, according to the wavelength of the modulated light, the distance represented by this phase delay is converted.

[0003] The use of a rangefinder generally requires it to be in a horizontal position in order to better observe and thus perform measurements. However, when measuring buildings, it is inevitable that the bottom surface is uneven and the height difference is relatively large. At this time, it is difficult to ensure that the rangefinder is in a horizontal position. Therefore, we propose a rangefinder that can ensure that the rangefinder is in a horizontal state when in use and can perform multi-angle and all-round measurements, that is, a rangefinder for real estate surveying and mapping. Utility Model Content

[0004] The purpose of the utility model is to provide a rangefinder for real estate surveying and mapping to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides a rangefinder for real estate surveying and mapping, comprising a circular frame, an inner wall of the circular frame being provided with a groove, a plurality of support rods being slidably connected in the groove, the support rods being able to make circular motion in the groove, the other end of the support rods being fixedly connected to a circular plate, a rangefinder body being fixedly connected to the top of the circular plate, a plurality of brackets being fixedly connected below the circular frame, the brackets being of a "hollow" structure, and support legs being slidably connected below the brackets.

[0006] As a further improvement of the technical solution, a plurality of card slots are provided on the inner wall of the groove of the circular frame, and the intervals between the card slots are small. A card plate is slidably connected to the bottom of the support rod, and a handle is fixedly connected to the surface of the card plate, and the card plate corresponds to the card slot.

[0007] As a further improvement of the technical solution, a plurality of springs are fixedly connected to the top of the support leg, the other end of the spring is fixedly connected to the bottom of the round frame, and the spring is located inside the bracket and does not contact the inner wall of the bracket.

[0008] As a further improvement of the technical solution, a nut is rotatably connected to the outer side of the bracket, and a circular hole corresponding to the nut is opened on the outer surface of the bracket.

[0009] As a further improvement of the technical solution, a level is fixedly connected to the upper surface of the circular frame.

[0010] As a further improvement of the technical solution, a support plate is fixedly connected to the bottom of the support leg, and the support plate is a "rectangular" structure.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The rangefinder used for real estate surveying and mapping realizes all-round observation of the rangefinder by allowing the support rod to make circular motion in a circular frame, thereby greatly improving the measurement range of the rangefinder. The addition of telescopically adjustable support legs allows the rangefinder to work normally on a ground with a large drop, thereby increasing the use range of the rangefinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the cross-sectional structure of the circular frame of the utility model;

[0015] Figure 3 It is a schematic diagram of the cross-sectional structure of the bracket of the utility model;

[0016] Figure 4 This is a schematic diagram of the support rod structure of the utility model.

[0017] The meaning of each number in the figure is:

[0018] 1. round frame; 11. groove; 12. support rod; 13. slot; 14. card plate; 15. handle; 16. level;

[0019] 2. round plate; 21. rangefinder body;

[0020] 3. Bracket; 31. Nut; 32. Spring; 33. Support leg; 34. Support plate. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] A rangefinder is a tool for measuring length or distance. It can also be combined with an angle measuring device or module to measure parameters such as angles and areas. There are many types of rangefinders, usually a long cylinder consisting of an objective lens, an eyepiece, a display device (which can be built-in), a battery, etc. Laser rangefinders can also emit multiple laser pulses to determine whether an object is moving away from or approaching a light source through the Doppler effect. See Figure 1-Figure 4 As shown, the utility model provides a rangefinder for real estate surveying and mapping, including a circular frame 1, an inner wall of the circular frame 1 is provided with a groove 11, a plurality of support rods 12 are slidably connected in the groove 11, the support rods 12 can make a circular motion in the groove 11, the other end of the support rods 12 is fixedly connected to a circular plate 2, a rangefinder body 21 is fixedly connected to the top of the circular plate 2, the support rods 12 are rotated to make a circular motion in the groove 11, thereby driving the rangefinder body 21 to rotate, so that the rangefinder body 21 can observe the entire circumferential range, a plurality of brackets 3 are fixedly connected below the circular frame 1, the brackets 3 are of a "hollow" structure, and support legs 33 are slidably connected below the brackets 3. By adjusting the support legs 33 up and down, it can not only adapt to a ground with a large drop, but also change the height of the rangefinder body 21.

[0023] The improvement of this embodiment is that:

[0024] Taking into account that when measuring buildings, it is inevitable to encounter uneven ground and large height differences, it is difficult to ensure that the rangefinder is in a horizontal position at this time. Therefore, a plurality of brackets 3 are fixedly connected below the circular frame 1, and the brackets 3 are of a "hollow" structure. Support legs 33 are slidably connected below the brackets 3. By adjusting the support legs 33 up and down, it can not only adapt to the ground with a large height difference, but also change the height of the rangefinder body 21. In order to achieve all-round observation of the rangefinder body 21, a groove 11 is provided on the inner wall of the circular frame 1, and a plurality of support rods 12 are slidably connected in the groove 11. The support rods 12 can make circular motion in the groove 11, and the other end of the support rods 12 is fixedly connected to the circular plate 2. The top of the circular plate 2 is fixedly connected with the rangefinder body 21. The support rods 12 are rotated to make circular motion in the groove 11, thereby driving the rangefinder body 21 to rotate, so as to achieve observation of the rangefinder body 21 over the entire circumferential range.

[0025] Considering that the support rod 12 can be fixed after rotation to ensure that the rangefinder body 21 does not shake, a plurality of card slots 13 are provided on the inner wall of the groove 11 of the round frame 1. The intervals between the card slots 13 are small. A card plate 14 is slidably connected to the bottom of the support rod 12. A handle 15 is fixedly connected to the surface of the card plate 14. The card plate 14 corresponds to the card slot 13. After the support rod 12 rotates, the handle 15 is pushed to drive the card plate 14 to engage with the card slot 13, thereby fixing the support rod 12.

[0026] In order to more conveniently adjust the height of each supporting leg 33 so that it can adapt to the ground with different height differences, a plurality of springs 32 are fixedly connected to the top of the supporting leg 33, and the other end of the spring 32 is fixedly connected to the bottom of the round frame 1. The spring 32 is located inside the bracket 3 and does not contact the inner wall of the bracket 3. Under the elastic force of the plurality of springs 32, it is more convenient to adjust each supporting leg 33.

[0027] Considering that the support leg 33 needs to be fixed after the height adjustment is completed, a nut 31 is rotatably connected to the outer side of the bracket 3, and a circular hole corresponding to the nut 31 is opened on the outer surface of the bracket 3. By rotating the nut 31, the nut 31 clamps and fixes the outer surface of the support leg 33, so that the height of the support leg 33 no longer changes.

[0028] In order to make the rangefinder body 21 in a horizontal state, a level 16 is fixedly connected to the upper surface of the circular frame 1. By observing the level 16, the height of the supporting legs 33 is adjusted to make the circular frame 1 horizontal, thereby making the rangefinder body 21 in a horizontal state.

[0029] In order to make the contact between the support leg 33 and the ground more stable, a support plate 34 is fixedly connected to the bottom of the support leg 33. The support plate 34 is a "rectangular" structure. The support plate 34 increases the contact area with the ground and makes the whole more stable.

[0030] In summary, the working principle of this solution is as follows:

[0031] When the rangefinder is used for work, the support plate 34 under each support leg 33 is allowed to contact the ground. For a ground with a large drop, the entire device is roughly in a horizontal state under the elastic force of the spring 32. By observing the level 16, the height of the support leg 33 is adjusted to make the circular frame 1 horizontal, thereby making the rangefinder body 21 in a horizontal state. At this time, the nut 31 is rotated to clamp and fix the outer surface of the support leg 33 by the nut 31, so that the height of the support leg 33 no longer changes. After the fixation is completed, the support rod 12 is rotated to make a circular motion in the groove 11, thereby driving the rangefinder body 21 to rotate, and realizing the observation of the entire circumferential range by the rangefinder body 21. If you want to stop the rotation of the rangefinder body 21 and fix it, push the handle 15 to drive the clamping plate 14 to clamp with the clamping groove 13, so as to fix the support rod 12, thereby fixing the rangefinder body 21.

[0032] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A distance meter for real estate surveying and mapping, comprising a circular frame (1), characterized in that: The inner wall of the circular frame (1) is provided with a groove (11), a plurality of support rods (12) are slidably connected in the groove (11), the support rods (12) are capable of performing circular motion in the groove (11), the other end of the support rod (12) is fixedly connected to the circular plate (2), the top of the circular plate (2) is fixedly connected to the rangefinder body (21), a plurality of brackets (3) are fixedly connected below the circular frame (1), the brackets (3) are of a "hollow" structure, and support legs (33) are slidably connected below the brackets (3).

2. The distance meter for real estate surveying and mapping according to claim 1, characterized in that: The inner wall of the groove (11) of the circular frame (1) is provided with a plurality of slots (13), the slots (13) are spaced relatively close to each other, a card plate (14) is slidably connected to the bottom of the support rod (12), a handle (15) is fixedly connected to the surface of the card plate (14), and the card plate (14) corresponds to the slots (13).

3. The distance meter for real estate surveying and mapping according to claim 1, characterized in that: A plurality of springs (32) are fixedly connected to the top of the support leg (33); the other ends of the springs (32) are fixedly connected to the bottom of the round frame (1); and the springs (32) are located inside the bracket (3) and do not contact the inner wall of the bracket (3).

4. The distance meter for real estate surveying and mapping according to claim 3, characterized in that: A nut (31) is rotatably connected to the outer side of the bracket (3), and a circular hole corresponding to the nut (31) is provided on the outer surface of the bracket (3).

5. The distance meter for real estate surveying and mapping according to claim 1, characterized in that: A level (16) is fixedly connected to the upper surface of the circular frame (1).

6. The distance meter for real estate surveying and mapping according to claim 1, characterized in that: A support plate (34) is fixedly connected to the bottom of the support leg (33), and the support plate (34) is a "rectangular" structure.

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