Dual purpose level stand

Abstract

This utility model discloses a dual-purpose level support, including a base (1), a mounting plate (2) rotatably connected to the upper side of the base (1), three circumferentially distributed support feet (3) at the bottom of the base (1), the upper ends of the support feet (3) being hinged to the outer periphery of the base (1), a vertical telescopic shaft (4) at the bottom of the base (1), a drive sleeve (5) on the outer side of the telescopic shaft (4), an annular groove on the outer circumferential surface of the drive sleeve (5), a rotating sleeve (6) inside the annular groove, and a connecting rod (7) between the rotating sleeve (6) and the support feet (3); the support feet (3) include a square tube (8) with its upper end hinged to the base (1), the connecting rod (7) being hinged to the side wall of the square tube (8), a square shaft (9) inside the square tube (8), and a first bolt (10) at the lower end of the square tube (8). This utility model has the advantages of being easy to use and easy to store.

Description

Technical Field

[0001] This utility model belongs to the field of level instrument accessories, and in particular relates to a dual-purpose level instrument bracket. Background Technology

[0002] During surveying, the level instrument is supported by a bracket to obtain a certain height above the ground, thereby avoiding ground obstacles and ensuring that the emitted laser light can reach the target to be measured smoothly.

[0003] The existing support structure includes a base with a mounting plate rotatably connected to its upper side. The level is fixed to the mounting plate. The bottom of the base has three circumferentially distributed support feet, the length of which is adjustable. The upper end of each support foot is rotatably connected to the outer circumference of the base, and the lower end of each support foot has a protruding tip, allowing the base to connect to the ground at three points. These three points define a plane, ensuring the support is placed stably. Furthermore, on softer ground, it facilitates the insertion of the support feet into the ground, thus ensuring stability. However, surveying work is not only conducted on ground with sufficient strength but also sometimes in swampy areas. Swamps have a thick layer of mud on top, where the support receives insufficient ground support, making it difficult to place stably. Currently, a large board is placed on the ground first, and then the support is placed on top of the board to increase the contact area and stabilize the support. However, carrying such a board in the field is very inconvenient. Utility Model Content

[0004] The purpose of this invention is to provide a dual-purpose level holder. This invention has the advantages of being easy to use and easy to store.

[0005] The technical solution of this utility model is as follows: A dual-purpose level support includes a chassis, an mounting plate rotatably connected to the upper side of the chassis, three circumferentially distributed support feet at the bottom of the chassis, the upper ends of the support feet being hinged to the outer periphery of the chassis, a vertical telescopic shaft at the bottom of the chassis, a drive sleeve on the outer side of the telescopic shaft, an annular groove on the outer circumferential surface of the drive sleeve, a rotating sleeve inside the annular groove, a connecting rod between the rotating sleeve and the support feet, one end of the connecting rod being hinged to the rotating sleeve, and the other end of the connecting rod being hinged to the support feet.

[0006] In the aforementioned dual-purpose level support, the support leg includes a square tube with its upper end hinged to the chassis, a connecting rod hinged to the side wall of the square tube, a square shaft inside the square tube, and a first bolt connecting the square shaft at the lower end of the square tube.

[0007] In the aforementioned dual-purpose level support, the lower end of the square shaft is provided with a first protrusion.

[0008] In the aforementioned dual-purpose level holder, the length of the square shaft is less than the length of the square tube, so that the first protrusion can be fully inserted into the square tube.

[0009] In the aforementioned dual-purpose level bracket, the lower end of the square shaft is provided with a notch, the width of which matches the width of the square shaft, and the square shaft is provided with an elongated hole through which the first bolt passes.

[0010] In the aforementioned dual-purpose level bracket, the telescopic shaft includes a circular tube fixed to the chassis, a drive sleeve screwed to the circular tube, a circular rod inside the drive sleeve, and a second bolt connecting the circular rod at the lower end of the circular tube.

[0011] In the aforementioned dual-purpose leveling instrument bracket, the lower end of the round rod is provided with a second protruding tip.

[0012] In the aforementioned dual-purpose level support, the length of the round rod is less than the length of the round tube, so that the second protrusion can be fully inserted into the round tube.

[0013] Compared with existing technologies, this utility model, based on existing supports, not only features three hinged support legs on the outer side of the chassis but also a telescopic shaft in the middle of the chassis. When used on ground with a certain strength, conventional operation involves the three support legs contacting the ground. However, when used on soft ground, the length of the telescopic shaft is increased, allowing it to insert into the ground and increasing the contact area between the support and the ground, thus ensuring stability. Furthermore, through structural optimization of the support legs, which include a square tube and a square shaft inside the tube, the square shaft can rotate to fit against the ground on soft ground, further increasing the contact area and ensuring stability. Since this utility model can be used stably on both ground with a certain strength and soft ground, it has two applications and eliminates the need to carry additional materials during field operations, making it convenient to use. In addition, the size of this utility model is adjustable, allowing it to be reduced to a smaller size when not in use for easy storage. Therefore, this utility model has the advantages of being easy to use and easy to store. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the present invention placed on a surface with a certain strength.

[0015] Figure 2 This is a schematic diagram of the present invention being used on a soft surface.

[0016] The labels in the attached diagram are as follows: 1-chassis, 2-mounting plate, 3-support foot, 4-telescopic shaft, 5-drive sleeve, 6-swivel sleeve, 7-connecting rod, 8-square tube, 9-square shaft, 10-first bolt, 11-first protrusion, 12-notch, 13-elongated hole, 14-round tube, 15-round rod, 16-second bolt, 17-second protrusion. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0018] Example: A dual-purpose level holder, such as Figure 1 and Figure 2 As shown, the device includes a chassis 1, with a mounting plate 2 rotatably connected to the upper side of the chassis 1. The level is fixed on the mounting plate 2, and the bottom of the chassis 1 is provided with three circumferentially distributed support feet 3.

[0019] The support leg 3 includes a square tube 8 hinged to the outer periphery of the chassis 1 at its upper end. A square shaft 9 is located inside the square tube 8. A first bolt 10 connecting the square shaft 9 is located at the lower end of the square tube 8. A first protrusion 11 is located at the lower end of the square shaft 9. The length of the square shaft 9 is less than the length of the square tube 8. When the square shaft 9 moves upward to its limit position, the first protrusion 11 can fully enter the square tube 8. A notch 12 is located at the lower end of the square shaft 9. The width of the notch 12 matches the width of the square shaft 9. An elongated hole 13 is provided on the square shaft 9 through which the first bolt 10 passes. When the square shaft 9 is pulled down to its lowest point, it can rotate to a horizontal position.

[0020] The bottom of the chassis 1 is provided with a vertical telescopic shaft 4. The telescopic shaft 4 includes a circular tube 14 fixed to the middle of the chassis 1. A drive sleeve 5 is threaded to the outer side of the circular tube 14. An annular groove is provided on the outer circumference of the drive sleeve 5. A rotating sleeve 6 is provided in the annular groove. A connecting rod 7 is provided between the rotating sleeve 6 and the square tube 8. One end of the connecting rod 7 is hinged to the rotating sleeve 6, and the other end of the connecting rod 7 is hinged to the square tube 8. A circular rod 15 is provided inside the drive sleeve 5. A second bolt 16 is provided at the lower end of the circular tube 14 to connect the circular rod 15. A second protrusion 17 is provided at the lower end of the circular rod 15. The length of the circular rod 15 is less than the length of the circular tube 14. When the circular rod 15 moves upward to its limit position, the second protrusion 17 can be fully inserted into the circular tube 14.

[0021] Instructions for use: When using on hard surfaces, such as cement or gravel, loosen the first bolt 10, move the square shaft 9 to change the total length of the support leg 3, adjust the height of the level instrument, and tighten the first bolt 10 to fix the total length of the support leg 3. The horizontal tilt angle of the mounting plate 2 should not exceed 3°. The bracket should contact the ground through the three first protrusions 11 for stable placement. The round rod 15 should be kept inside the round tube 14 and fixed by the second bolt 16 to prevent it from falling. By rotating the drive sleeve 5, the rotating sleeve 6 can be moved upwards, increasing the opening angle of the support leg 3 and improving stability. The landing point can also be changed to adapt to different site requirements.

[0022] When used on soft ground, such as paddy fields or marshes, Figure 2As shown, loosen the first bolt 10, rotate the square shaft 9 to a horizontal position, with the first protrusion 11 facing inward to avoid contact with workers; loosen the second bolt 16, pull down the round rod 15, the pull-down length depending on the looseness of the rod, the principle being that the looser the rod, the more it should be pulled down; then tighten the second bolt 16 to fix the length of the telescopic shaft 4. Insert the lower end of the round rod 15 into the ground until the square shaft 9 also contacts the ground, and tighten the first bolt 10. At this point, because the square shaft 9 is inserted into the ground, all three square shafts 9 maintain surface contact with the ground, and the support is placed stably.

[0023] When not in use, both the support leg 3 and the telescopic shaft 4 are adjusted to their shortest positions. Rotating the drive sleeve 5 causes the rotating sleeve 6 to move downwards. The rotating sleeve 6 pulls the support leg 3 inwards through the connecting rod 7, reducing the volume of the bracket.

[0024] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

Claims

1. A dual-purpose leveling instrument bracket, comprising a base (1), a mounting plate (2) rotatably connected to the upper side of the base (1), and three circumferentially distributed support feet (3) at the bottom of the base (1), the upper ends of the support feet (3) being hinged to the outer periphery of the base (1), characterized in that: The bottom of the chassis (1) is provided with a vertical telescopic shaft (4), and a drive sleeve (5) is provided on the outside of the telescopic shaft (4). An annular groove is provided on the outer circumference of the drive sleeve (5), and a rotating sleeve (6) is provided in the annular groove. A connecting rod (7) is provided between the rotating sleeve (6) and the support foot (3). One end of the connecting rod (7) is hinged to the rotating sleeve (6), and the other end of the connecting rod (7) is hinged to the support foot (3).

2. The dual-purpose level holder according to claim 1, characterized in that: The support foot (3) includes a square tube (8) with its upper end hinged to the chassis (1), a connecting rod (7) hinged to the side wall of the square tube (8), a square shaft (9) inside the square tube (8), and a first bolt (10) connecting the square shaft (9) at the lower end of the square tube (8).

3. The dual-purpose level holder according to claim 2, characterized in that: The lower end of the square shaft (9) is provided with a first protrusion (11).

4. The dual-purpose level holder according to claim 3, characterized in that: The length of the square shaft (9) is less than the length of the square tube (8), so that the first protrusion (11) can be fully inserted into the square tube (8).

5. The dual-purpose level holder according to claim 2, characterized in that: The lower end of the square shaft (9) is provided with a notch (12), the width of the notch (12) matches the width of the square shaft (9), and the square shaft (9) is provided with a long hole (13) through which the first bolt (10) passes.

6. The dual-purpose level holder according to claim 1, characterized in that: The telescopic shaft (4) includes a round tube (14) fixed to the chassis (1), a drive sleeve (5) screwed to the round tube (14), a round rod (15) inside the drive sleeve (5), and a second bolt (16) connecting the round rod (15) at the lower end of the round tube (14).

7. The dual-purpose level holder according to claim 6, characterized in that: The lower end of the round rod (15) is provided with a second protrusion (17).

8. The dual-purpose level holder according to claim 7, characterized in that: The length of the round rod (15) is less than the length of the round tube (14), so that the second protrusion (17) can be fully inserted into the round tube (14).

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