External laser head compass capable of positioning central point by using crossed light

Abstract

The invention discloses an external laser head compass capable of positioning a center point by using crossed light, which comprises a mounting plate, a compass body is arranged on the upper side of the mounting plate, an annular groove is formed in the upper side of the mounting plate, the circle center of the annular groove is the same as that of the compass body, a limiting ring groove is formed in the side wall of the annular groove, and the limiting ring groove is matched with the limiting ring groove. An annular groove is formed in the compass body, two first mounting blocks are connected into the annular groove through a limiting sliding device, the first mounting blocks slide along the annular groove and around the periphery of the compass body, the upper sides of the two first mounting blocks are connected with a second mounting block through any rotating device, and a baffle is arranged on the side wall of the second mounting block. The corresponding central vertical line point of the compass can be quickly found on the ground by utilizing the intersection point coincidence of the two cross-shaped lasers, the accuracy is high, meanwhile, the whole compass is convenient to disassemble and assemble, and the convenience is high.

Description

Technical Field

[0001] The invention relates to the technical field of compasses, and in particular to an external laser head compass capable of locating a center point by using cross-intersecting light rays. Background Art

[0002] The compass is also called Luojing. It is widely used in military, navigation, forestry, exploration, construction and other fields. The compass consists of three parts: the Tianchi, the inner plate and the outer plate. The Tianchi consists of a pin, a magnetic needle, a seabed line, a cylindrical outer box and a glass cover. The inner plate is the azimuth plate, which is fixed to the cylindrical outer box on the Tianchi. Various contents on the compass are engraved on different circles of the azimuth plate. The outer plate is usually square, and the crystal lines passing through the center holes on the four sides of the outer plate form the ten celestial lines, which are the positioning lines, which are used to read the contents on the inner plate.

[0003] When the compass is used for positioning, because the center point of the compass needs to be located at the center point of the house (center of gravity) or the center point of the room, it is very important to find the corresponding center vertical point of the compass on the ground when the compass is used. However, the compass needs to be set up on a tripod for use, and because of the uneven ground level, the tripod is often slightly tilted, making it inconvenient to find the corresponding center vertical point of the compass on the ground. Summary of the invention

[0004] The present invention provides an external laser head compass which can locate the center point by using cross-intersecting light rays, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An external laser head compass that can use cross-cross light to locate the center point, includes a mounting plate, a compass body is provided on the upper side of the mounting plate, an annular groove is opened on the upper side of the mounting plate, the annular groove is the same as the center of the compass body, a limiting annular groove is opened on the side wall of the annular groove, two first mounting blocks are connected in the annular groove through a limiting sliding device, the first mounting blocks slide along the annular groove and around the periphery of the compass body, the upper sides of the two first mounting blocks are connected to a second mounting block through an arbitrary rotating device, and a baffle is provided on the side wall of the second mounting block.

[0007] Preferably, the limiting sliding device includes an arc block, a movable cavity is commonly opened in the arc block and the first mounting block, the movable cavity is arranged in a Z shape, a Z-shaped rod is slidably connected in the movable cavity, one end of the Z-shaped rod extends out of the side wall of the first mounting block and is provided with an elastic pulling device, and the other end of the Z-shaped rod extends out of the side wall of the arc block and extends into the limiting ring groove.

[0008] Preferably, the elastic pulling device includes a baffle, which is fixedly connected to one end of the Z-shaped rod, and a section of the spring extending out of the first mounting block is sleeved with a spring, and both ends of the spring are respectively fixedly connected to the baffle and the side wall of the first mounting block.

[0009] Preferably, the curvature of the arc block matches the curvature of the annular groove.

[0010] Preferably, the arbitrary rotating device includes a second connecting frame and a first connecting frame, the side walls of the second connecting frame and the first connecting frame are rotatably connected with friction damping hinges, a connecting plate is fixedly connected between the two friction damping hinges, the side walls of the first mounting block and the second mounting block are fixedly connected with first threaded rods, nuts are threadedly connected to the two first threaded rods, and the first mounting block and the second mounting block respectively penetrate the side walls of the first connecting frame and the second connecting frame through the first threaded rod.

[0011] Preferably, a positioning triangle mark is fixedly connected to the side wall of the first mounting block, and the positioning triangle mark is close to the outer edge of the compass body.

[0012] Preferably, the first mounting block and the second mounting block have the same shape, and the first mounting block and the second mounting block are both arranged in a T-shape.

[0013] Preferably, the method of using the external laser head compass is:

[0014] In the first step, when it is necessary to locate the center point of the compass body on the ground, the baffle can be pulled first to retract the bottom end of the Z-shaped rod into the arc block, and then the first mounting block can be inserted into the annular groove through the arc block, and then the baffle is released to allow the bottom end of the Z-shaped rod to re-enter the limiting annular groove under the action of the spring, so that both first mounting blocks can slide along the circumference of the annular groove;

[0015] In the second step, the second mounting block is rotated with the friction damping hinge as the axis so that the cross laser light on the side wall of the second mounting block faces the ground. The cross laser lights on the two side walls of the second mounting blocks can both project cross laser lines on the ground. Then, by adjusting the pitch angles of the second connecting frames of the two second mounting heads, the two cross intersection points of the two cross laser lines projected on the ground overlap, and the overlapping point can be the central vertical point of the compass body on the ground.

[0016] Preferably, threaded holes are provided in the middle of the four side walls of the second mounting block, a second threaded rod is fixedly connected to the side wall of the first mounting block, and the two first mounting blocks are threadedly mounted in two threaded holes at a 90-degree angle therein through the second threaded rod, and the location of the compass center point can be determined by adjusting the elevation angle of the cross laser light on the side wall of the second mounting block so that the intersection points of the cross laser beams of the two cross laser lights coincide.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The device is reasonably designed. By utilizing the overlap of two cross laser intersection points, the corresponding central vertical point of the compass can be quickly found on the ground with high accuracy. At the same time, the device is easy to disassemble and assemble as a whole and is highly convenient.

[0019] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. The specific implementation of the present invention is given in detail by the following embodiments and their accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0021] Figure 1 This is a schematic diagram of the structure of an external laser head compass proposed in Example 1 that can locate the center point using cross-crossed light rays;

[0022] Figure 2 It is a schematic diagram of the structure between the first mounting block and the second mounting block in the first embodiment;

[0023] Figure 3 This is a schematic diagram of a front cross-sectional structure of an external laser head compass proposed in Example 1 that can locate a center point using cross-crossed light rays;

[0024] Figure 4 for Figure 1 A is a schematic diagram of the partially enlarged structure of the middle part;

[0025] Figure 5 This is a schematic diagram of the structure of the first mounting block in Embodiment 1;

[0026] Figure 6 This is a schematic diagram of the structure of an external laser head compass proposed in Example 2 that can locate the center point using cross-crossed light rays.

[0027] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0028] 1. Mounting plate; 2. Compass body; 3. First mounting block; 4. Second mounting block; 5. Second connecting frame; 6. First connecting frame; 7. Friction damping hinge; 8. Baffle; 9. Spring; 10. Moving cavity; 11. Limiting ring groove; 12. Arc block; 13. Annular groove; 14. Nut; 15. First threaded rod; 16. Positioning triangle mark; 17. Z-shaped rod; 18. Cross laser light; 19. Threaded hole; 20. Second threaded rod; 21. Connecting plate. DETAILED DESCRIPTION

[0029] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention. The present invention is described in more detail by way of example with reference to the accompanying drawings in the following paragraphs. It should be noted that the accompanying drawings are all in a very simplified form and are not in precise proportions, and are only used to facilitate and clearly assist in explaining the purpose of the embodiments of the present invention.

[0030] See also Figures 1 to 5 In the first embodiment of the present invention, an external laser head compass that can use cross-cross light to locate the center point includes a mounting plate 1, a compass body 2 is provided on the upper side of the mounting plate 1, an annular groove 13 is provided on the upper side of the mounting plate 1, the annular groove 13 is the same as the center of the compass body 2, a limiting annular groove 11 is provided on the side wall of the annular groove 13, two first mounting blocks 3 are connected in the annular groove 13 through a limiting sliding device, the first mounting blocks 3 slide along the annular groove 13 and around the periphery of the compass body 2, the upper sides of the two first mounting blocks 3 are connected to the second mounting blocks 4 through an arbitrary rotating device, a baffle 8 is provided on the side wall of the second mounting block 4, the first mounting block 3 and the second mounting block 4 have the same shape, and the first mounting block 3 and the second mounting block 4 are both T-shaped.

[0031] Specifically, the limiting sliding device includes an arc block 12, and a movable cavity 10 is jointly opened in the arc block 12 and the first mounting block 3. The movable cavity 10 is arranged in a Z shape, and a Z-shaped rod 17 is slidably connected in the movable cavity 10. One end of the Z-shaped rod 17 extends out of the side wall of the first mounting block 3 and is provided with an elastic pulling device. The elastic pulling device includes a baffle 8, and the baffle 8 is fixedly connected to one end of the Z-shaped rod 17. The spring 9 is sleeved on a section extending out of the first mounting block 3. The two ends of the spring 9 are respectively fixedly connected to the baffle 8 and the side wall of the first mounting block 3. The other end of the Z-shaped rod 17 extends out of the side wall of the arc block 12 and extends into the limiting ring groove 11. The curvature of the arc block 12 is adapted to the curvature of the annular groove 13.

[0032] Specifically, the arbitrary rotating device includes a second connecting frame 5 and a first connecting frame 6, and the side walls of the second connecting frame 5 and the first connecting frame 6 are both rotatably connected with friction damping hinges 7, and a connecting plate 21 is fixedly connected between the two friction damping hinges 7, and the side walls of the first mounting block 3 and the second mounting block 4 are both fixedly connected with first threaded rods 15, and nuts 14 are threadedly connected to the two first threaded rods 15. The first mounting block 3 and the second mounting block 4 are respectively penetrated through the side walls of the first connecting frame 6 and the second connecting frame 5 by the first threaded rods 15. Due to the provision of two friction damping hinges 7 rotatably connected to each other, the first mounting block 3 and the second mounting block 4 can rotate relative to each other at an angle greater than 270°. When the first mounting block 3 and the second mounting block 4 are arbitrarily rotated with the friction damping hinge 7 as the axis, the cross laser light 18 on the side wall of the second mounting block 4 can be made to face the ground.

[0033] Specifically, a positioning triangle mark 16 is fixedly connected to the side wall of the first mounting block 3 , and the positioning triangle mark 16 is close to the outer edge of the compass body 2 . The positioning triangle mark 16 can be used to quickly locate and find the scale line 3 on 2 .

[0034] The usage of the external laser head compass is as follows:

[0035] In the first step, when it is necessary to locate the center point of the compass body 2 on the ground, the baffle 8 can be pulled first to retract the bottom end of the Z-shaped rod 17 into the arc block 12, and then the first mounting block 3 can be inserted into the annular groove 13 through the arc block 12, and then the baffle 8 is released to allow the bottom end of the Z-shaped rod 17 to re-enter the limiting annular groove 11 under the action of the spring 9, so that both first mounting blocks 3 can slide along the circumference of the annular groove 13;

[0036] In the second step, the second mounting block 4 is rotated with the friction damping hinge 7 as the axis so that the cross laser light 18 on the side wall of the second mounting block 4 faces the ground. The cross laser lights 18 on the two side walls of the second mounting blocks 4 can both project cross laser lines on the ground. Then, by adjusting the pitch angles of the second connecting frames 5 of the two second mounting heads, the two cross intersection points of the two cross laser lines projected on the ground coincide with each other, and the coincidence point can be the central vertical point of the compass body 2 on the ground.

[0037] Embodiment 2

[0038] See also Figure 6 A threaded hole 19 is provided in the middle of the four side walls of the second mounting block 4, and a second threaded rod 20 is fixedly connected to the side wall of the first mounting block 3. The two first mounting blocks 3 are threadedly mounted in two threaded holes 19 at a 90-degree angle thereto through the second threaded rod 20. By adjusting the elevation angle of the cross laser light 18 on the side wall of the second mounting block 4, the intersection points of the cross laser beams of the two cross laser lights 18 are made to coincide, and the center point of the compass can be determined.

[0039] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any ordinary technician in the industry can smoothly implement the present invention as shown in the drawings and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. An external laser head compass capable of locating a center point using cross-light rays, comprising a mounting plate (1), characterized in that: A compass body (2) is provided on the upper side of the mounting plate (1), an annular groove (13) is provided on the upper side of the mounting plate (1), the annular groove (13) and the compass body (2) have the same center, a limiting annular groove (11) is provided on the side wall of the annular groove (13), two first mounting blocks (3) are connected in the annular groove (13) via a limiting sliding device, the first mounting blocks (3) slide along the annular groove (13) and around the periphery of the compass body (2), the upper sides of the two first mounting blocks (3) are connected to second mounting blocks (4) via an arbitrary rotating device, and a baffle (8) is provided on the side wall of the second mounting block (4).

2. The external laser head compass capable of locating the center point by using cross-crossed light rays according to claim 1, characterized in that: The limiting sliding device comprises an arc block (12), a movable cavity (10) is provided in the arc block (12) and the first mounting block (3), the movable cavity (10) is arranged in a Z shape, a Z-shaped rod (17) is slidably connected in the movable cavity (10), one end of the Z-shaped rod (17) extends out of the side wall of the first mounting block (3) and is provided with an elastic pulling device, and the other end of the Z-shaped rod (17) extends out of the side wall of the arc block (12) and extends into the limiting ring groove (11).

3. The external laser head compass capable of locating the center point by using cross-crossed light rays according to claim 2, characterized in that: The elastic pulling device comprises a baffle (8), the baffle (8) being fixedly connected to one end of the Z-shaped rod (17), a section of the spring (9) extending out of the first mounting block (3) being sleeved with the spring (9), and two ends of the spring (9) being fixedly connected to the baffle (8) and the side wall of the first mounting block (3), respectively.

4. The external laser head compass capable of locating the center point by using cross-crossed light rays according to claim 3, characterized in that: The curvature of the arc-shaped block (12) matches the curvature of the annular groove (13).

5. The external laser head compass capable of locating the center point by using cross-crossed light rays according to claim 4, characterized in that: The arbitrary rotating device comprises a second connecting frame (5) and a first connecting frame (6); the side walls of the second connecting frame (5) and the first connecting frame (6) are both rotatably connected with friction damping hinges (7); a connecting plate (21) is fixedly connected between the two friction damping hinges (7); the side walls of the first mounting block (3) and the second mounting block (4) are both fixedly connected with first threaded rods (15); nuts (14) are threadedly connected to the two first threaded rods (15); the first mounting block (3) and the second mounting block (4) respectively penetrate the side walls of the first connecting frame (6) and the second connecting frame (5) through the first threaded rods (15).

6. The external laser head compass capable of locating the center point by using cross-crossed light rays according to claim 5, characterized in that: A positioning triangle mark (16) is fixedly connected to the side wall of the first mounting block (3), and the positioning triangle mark (16) is close to the outer edge of the compass body (2).

7. The external laser head compass capable of locating the center point by using cross-crossed light rays according to claim 6, characterized in that: The first mounting block (3) and the second mounting block (4) have the same shape, and the first mounting block (3) and the second mounting block (4) are both arranged in a T-shape.

8. The external laser head compass capable of locating the center point by using cross-crossed light rays according to claim 7, characterized in that: The usage of the external laser head compass is as follows: In the first step, when it is necessary to locate the compass body (2) at the center point of the ground, the baffle (8) can be pulled first to allow the bottom end of the Z-shaped rod (17) to retract into the arc block (12), and then the first mounting block (3) can be inserted into the annular groove (13) through the arc block (12), and then the baffle (8) can be released to allow the bottom end of the Z-shaped rod (17) to re-enter the limiting annular groove (11) under the action of the spring (9), so that both first mounting blocks (3) can slide along the circumference of the annular groove (13); In the second step, the second mounting block (4) is rotated with the friction damping hinge (7) as the axis so that the cross laser light (18) on the side wall of the second mounting block (4) faces the ground. The cross laser lights (18) on the side walls of the two second mounting blocks (4) can both project cross laser lines on the ground. Then, by adjusting the pitch angles of the second connecting frames (5) of the two second mounting heads, the two cross intersection points of the two cross laser lines projected on the ground are made to coincide with each other. The coincidence point can be the central vertical point of the compass body (2) on the ground.

9. The external laser head compass capable of locating the center point by using cross-crossed light rays according to claim 1, characterized in that: The second mounting block (4) is provided with threaded holes (19) in the middle of the four side walls, and the side wall of the first mounting block (3) is fixedly connected with a second threaded rod (20). The two first mounting blocks (3) are threadedly mounted in two threaded holes (19) at a 90-degree angle therebetween through the second threaded rod (20). By adjusting the elevation angle of the cross laser lights (18) on the side wall of the second mounting block (4), the intersection points of the cross laser beams of the two cross laser lights (18) are made to coincide, so that the location of the compass center point can be determined.

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