Compass convenient to disassemble and assemble and provided with laser head with free rotation function

Abstract

The invention discloses a portable dismounting and mounting compass with a laser head with a free rotation function, the compass comprises a mounting plate, the bottom side of the mounting plate is provided with a triangular support device, the center of the upper surface of the mounting plate is provided with a compass body, the upper side of the mounting plate is provided with an annular track groove, the annular track groove is internally provided with two laser routing devices, and the two laser routing devices are arranged on the mounting plate. And each laser routing device comprises a first mounting head. According to the invention, the design is reasonable, 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 influence of the inclination of the tripod is avoided, the accuracy is high, meanwhile, the whole 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 a portable, detachable compass with a laser head having a free-rotation function. 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 a portable and detachable compass with a laser head having a free-rotation function, 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] A portable and detachable compass with a laser head with a free-rotating function, comprising a mounting plate, a triangular supporting device is arranged on the bottom side of the mounting plate, a compass body is arranged in the center of the upper surface of the mounting plate, an annular track groove is opened on the upper side of the mounting plate, two laser marking devices are arranged in the annular track groove, each of the laser marking devices comprises a first mounting head, a first connecting frame is fixedly connected to the upper end of the first mounting head, a second connecting frame is connected to the upper side of the first connecting frame through a rotating device, a second mounting head is fixedly connected to the upper side of the second connecting frame, a straight laser lamp and a cross laser lamp are respectively arranged on the side walls of the first mounting head and the second mounting head, three bearings are arranged on the bottom side of the first mounting head, and the first mounting head is slidably connected to the annular track groove through the three bearings.

[0007] Preferably, the triangular supporting device includes a fixed cylinder, three legs are provided on the bottom outer wall of the fixed cylinder, a lifting rod is slidably connected inside the fixed cylinder, a fastening bolt is threadedly connected on the side wall of the fixed cylinder, one end of the fastening bolt is against the side wall of the lifting rod, and the upper end of the lifting rod is connected to the mounting plate through an adsorption device.

[0008] Preferably, the adsorption device includes a suction cup and a copper sheet, the suction cup is fixedly connected to the upper end of the lifting rod, a disc groove is opened on the bottom side wall of the mounting plate, a disc-shaped copper sheet is fixedly connected to the bottom side wall of the disc groove, the suction cup is adsorbed on the side wall of the copper sheet, the diameter of the suction cup is the same as the diameter of the copper sheet, and the suction cup is a glue-dropping vacuum suction cup.

[0009] Preferably, a wear-resistant ball is fixedly connected to the bottom end of each of the legs.

[0010] Preferably, the rotating device includes a second fixed block, which is fixedly connected to the side wall of the first connecting frame, a through hole is opened on the side wall of the second fixed block, a fixed shaft passes through the through hole, the fixed shaft and the through hole are interference fit, and both ends of the fixed shaft are fixedly connected to the first fixed blocks, and the two first fixed blocks are fixedly connected to the bottom side wall of the second connecting frame.

[0011] Preferably, the diameter of the bearing is matched with the diameter of the annular track groove.

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

[0013] Preferably, the compass body adopts an oil-filled strong magnetic compass.

[0014] Preferably, the entire triangular support device is made of aluminum alloy or pure copper and is a non-magnetic material.

[0015] Preferably, the second mounting head and the first mounting head are fixedly connected to the side walls with threaded rods, the side walls of the two threaded rods are threaded with nuts, and the second mounting head and the first mounting head are respectively penetrated through the side walls of the first connecting frame and the second connecting frame through the threaded rods.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The device is reasonably designed. By utilizing the overlap of two cross laser intersections, the corresponding central vertical point of the compass can be quickly found on the ground. It is not affected by the tilt of the tripod and has high accuracy. At the same time, the device is easy to disassemble and assemble as a whole and is highly convenient.

[0018] 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

[0019] 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:

[0020] Figure 1 This is a schematic diagram of the front cross-sectional structure of a portable, detachable compass with a freely rotating laser head proposed by the present invention;

[0021] Figure 2 This is a schematic diagram of the upper surface structure of the mounting plate proposed by the present invention;

[0022] Figure 3 for Figure 1 A is a schematic diagram of the partially enlarged structure of the middle part;

[0023] Figure 4 for Figure 1 A schematic diagram of the partially enlarged structure of B in the middle;

[0024] Figure 5 It is a schematic diagram of the connection structure between the first mounting head and the second mounting head in the present invention;

[0025] Figure 6 It is a schematic diagram of the second connection frame structure in the present invention;

[0026] Figure 7 It is a schematic diagram of the first connection frame structure in the present invention;

[0027] Figure 8 It is a structural schematic diagram of the first mounting head in the present invention;

[0028] Fig. 9 It is a schematic diagram of the front cross-sectional structure of the mounting plate in the present invention;

[0029] Fig.10 It is a schematic diagram of the bottom surface structure of the mounting plate in the present invention;

[0030] Fig.11 It is a schematic diagram of using the threaded rods on the two first mounting heads as aiming rods.

[0031] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0032] 1. Copper sheet; 2. Compass body; 3. First connecting frame; 4. Second connecting frame; 5. Second mounting head; 6. First mounting head; 7. Suction cup; 8. Fixing tube; 9. Mounting plate; 10. Lifting rod; 11. Support leg; 12. Wear-resistant ball; 13. Fastening bolt; 14. Linear laser light; 15. Cross laser light; 16. Annular track groove; 17. Bearing; 18. First fixing block; 19. Second fixing block; 20. Fixed shaft; 21. Disc groove; 22. Nut; 23. Threaded rod. DETAILED DESCRIPTION

[0033] 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.

[0034] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0036] See also Figures 1 to 10 In the first embodiment of the present invention, a portable detachable compass with a freely rotating laser head includes a mounting plate 9, a triangular support device is provided on the bottom side of the mounting plate 9, a compass body 2 is provided at the center of the upper surface of the mounting plate 9, an annular track groove 16 is provided on the upper side of the mounting plate 9, and the center of the annular track groove 16 is the same as that of the compass body 2. Two laser marking devices are provided in the annular track groove 16, each laser marking device includes a first mounting head 6, and the upper end of the first mounting head 6 is fixedly connected to a first connecting frame 3, and the upper side of the first connecting frame 3 is rotated The device is connected with a second connection frame 4, a second mounting head 5 is fixedly connected to the upper side of the second connection frame 4, threaded rods 23 are fixedly connected to the side walls of the second mounting head 5 and the first mounting head 6, nuts 22 are threadedly connected to the side walls of the two threaded rods 23, the second mounting head 5 and the first mounting head 6 respectively penetrate the side walls of the first connection frame 3 and the second connection frame 4 through the threaded rods 23, and then the second mounting head 5 and the first mounting head 6 can be respectively fixedly connected to the side walls of the second connection frame 4 and the first connection frame 3 through the nuts 22 and the threaded rods 23;

[0037] The first mounting head 6 and the second mounting head 5 have the same shape and are both T-shaped blocks. A straight laser light 14 and a cross laser light 15 are respectively provided on the side walls of the first mounting head 6 and the second mounting head 5. Three bearings 17 are provided on the bottom side of the first mounting head 6. The first mounting head 6 is slidably connected to the annular track groove 16 through the three bearings 17. The diameter of the bearing 17 is adapted to the diameter of the annular track groove 16.

[0038] Specifically, the triangular support device includes a fixed cylinder 8, three legs 11 are provided on the bottom outer wall of the fixed cylinder 8, a lifting rod 10 is slidably connected in the fixed cylinder 8, a fastening bolt 13 is threadedly connected on the side wall of the fixed cylinder 8, one end of the fastening bolt 13 is against the side wall of the lifting rod 10, and the upper end of the lifting rod 10 is connected to the mounting plate 9 through an adsorption device, the adsorption device includes a suction cup 7 and a copper sheet 1, the suction cup 7 is fixedly connected to the upper end of the lifting rod 10, a disc groove 21 is provided on the bottom side wall of the mounting plate 9, a disc-shaped copper sheet 1 is fixedly connected to the bottom side wall of the disc groove 21, the suction cup 7 is adsorbed on the side wall of the copper sheet 1, the diameter of the suction cup 7 is the same as the diameter of the copper sheet 1, the central axes of the compass body 2, the suction cup 7 and the tripod are in a collinear line, and the compass body 2 can be more accurately aligned at the center point of the room by combining the three centers into one;

[0039] The suction cup 7 is a glue-dropping vacuum suction cup, which has a stronger adsorption force and can be more easily and firmly adsorbed on the bottom side wall of the copper sheet 1.

[0040] Specifically, the rotating device includes a second fixed block 19, which is fixedly connected to the side wall of the first connecting frame 3. A through hole is opened on the side wall of the second fixed block 19, and a fixed shaft 20 passes through the through hole. The fixed shaft 20 is interference fit with the through hole, and both ends of the fixed shaft 20 are fixedly connected to the first fixed blocks 18. The two first fixed blocks 18 are fixedly connected to the bottom side wall of the second connecting frame 4. The second mounting head 5 and the first mounting head 6 can be rotated with the fixed shaft 20 as the axis. Because the fixed shaft 20 is interference fit with the through hole, the angle between the second mounting head 5 and the first mounting head 6 can be kept fixed after manual adjustment.

[0041] It should be noted that multiple groups of laser heads can be freely disassembled and assembled on the annular track groove 16 to perform combined compass orientation, rather than the combined application of only two laser heads.

[0042] Specifically, when the two first mounting heads 6 are in adjacent contact, the laser straight line angle generated by the straight laser lamp 14 on the side walls of the two first mounting heads 6 is precisely designed and processed to be 15 degrees, which can perform single-mountain orientation on the compass (360 degrees is 24 hills, and a single hill is 15 degrees).

[0043] The compass body 2 adopts an oil-filled strong magnetic compass, which can reduce the damage to the compass caused by the bumps of the compass, and can also make the magnetic needle point more smoothly and accurately.

[0044] The entire triangular support device (including the wear-resistant balls 12 , the legs 11 , the lifting rods 10 , the fixing tubes 8 , and the fastening bolts 13 ) are made of aluminum alloy or pure copper and are non-magnetic, so as to avoid the influence of magnetic materials on the direction of the compass body 2 .

[0045] The working principle of the present invention is:

[0046] When in use, the three legs 11 can be spread out on the ground first, and then the copper sheet 1 on the bottom side of the mounting plate 9 is adsorbed on the suction cup 7 on the upper end of the lifting rod 10 to complete the installation of the mounting plate 9. When it is necessary to locate the center point of the compass body 2 on the ground, the two first mounting heads 6 can be inserted into the annular track groove 16 through the bearing 17, so that the two first mounting heads 6 can slide along the circumference of the annular track groove 16, and the second mounting heads 5 above the two first mounting heads 6 can be rotated by the fixed shaft 20. The cross laser lights 15 on the side walls of the two second mounting heads 5 can both project cross laser lines on the ground. By adjusting the pitch angles of the two second mounting heads 5, the two cross intersections of the two cross laser lines projected on the ground are made to coincide, and the coincidence point can be the central vertical point of the compass body 2 on the ground, so that the compass can be completely and accurately coincident with the center point of the determined house;

[0047] At the same time, the straight laser lamps 14 on the side walls of the two first mounting heads 6 can also emit vertical straight lasers to facilitate positioning of the azimuth indicated by the compass body 2 .

[0048] Embodiment 2

[0049] See also Fig.11 , when the battery is out of power or the outdoor sunlight is too strong to use the laser, or the directional landscape object is too far away, such as Fig.11 The pure copper threaded rod 23 above the first mounting head 6 can be used as an aiming rod. Through the aiming rods on the front and rear two groups of first mounting heads 6, the landscape objects near and far can be aligned and aimed at two points in a straight line.

[0050] 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. A portable and detachable compass with a freely rotating laser head, comprising a mounting plate (9), characterized in that: A triangular support device is provided on the bottom side of the mounting plate (9); a compass body (2) is provided in the center of the upper surface of the mounting plate (9); an annular track groove (16) is provided on the upper side of the mounting plate (9); two laser marking devices are provided in the annular track groove (16); each of the laser marking devices comprises a first mounting head (6); the upper end of the first mounting head (6) is fixedly connected to a first connecting frame (3); the upper side of the first connecting frame (3) is connected to a second connecting frame (4) via a rotating device; the upper side of the second connecting frame (4) is fixedly connected to a second mounting head (5); a straight laser light (14) and a cross laser light (15) are provided on the side walls of the first mounting head (6) and the second mounting head (5), respectively; three bearings (17) are provided on the bottom side of the first mounting head (6); the first mounting head (6) is slidably connected to the annular track groove (16) via the three bearings (17).

2. A portable and detachable compass with a freely rotating laser head according to claim 1, characterized in that: The triangular support device comprises a fixed cylinder (8), three legs (11) are arranged on the outer side wall of the bottom of the fixed cylinder (8), a lifting rod (10) is slidably connected inside the fixed cylinder (8), a fastening bolt (13) is threadedly connected on the side wall of the fixed cylinder (8), one end of the fastening bolt (13) is against the side wall of the lifting rod (10), and the upper end of the lifting rod (10) is connected to the mounting plate (9) through an adsorption device.

3. A portable and detachable compass with a freely rotating laser head according to claim 2, characterized in that: The adsorption device comprises a suction cup (7) and a copper sheet (1); the suction cup (7) is fixedly connected to the upper end of the lifting rod (10); a disc groove (21) is provided on the bottom side wall of the mounting plate (9); a disc-shaped copper sheet (1) is fixedly connected to the bottom side wall of the disc groove (21); the suction cup (7) is adsorbed on the side wall of the copper sheet (1); the diameter of the suction cup (7) is the same as the diameter of the copper sheet (1); and the suction cup (7) is a glue-dropping vacuum suction cup.

4. A portable and detachable compass with a freely rotating laser head according to claim 3, characterized in that: The bottom end of each support leg (11) is fixedly connected with a wear-resistant ball (12).

5. A portable and detachable compass with a freely rotating laser head according to claim 4, characterized in that: The rotating device comprises a second fixed block (19), the second fixed block (19) is fixedly connected to the side wall of the first connecting frame (3), a through hole is opened on the side wall of the second fixed block (19), a fixed shaft (20) passes through the through hole, the fixed shaft (20) and the through hole are interference fit, the two ends of the fixed shaft (20) are fixedly connected to the first fixed blocks (18), and the two first fixed blocks (18) are fixedly connected to the bottom side wall of the second connecting frame (4).

6. A portable and detachable compass with a freely rotating laser head according to claim 5, characterized in that: The diameter of the bearing (17) is matched with the diameter of the annular track groove (16).

7. A portable and detachable compass with a freely rotating laser head according to claim 6, characterized in that: The first mounting head (6) and the second mounting head (5) have the same shape and are both arranged in a T-shaped block.

8. A portable and detachable compass with a freely rotating laser head according to claim 7, characterized in that: The compass body (2) adopts an oil-filled strong magnetic compass.

9. A portable and detachable compass with a freely rotating laser head according to claim 8, characterized in that: The entire triangular support device is made of aluminum alloy or pure copper and is non-magnetic.

10. A portable and detachable compass with a freely rotating laser head according to claim 9, characterized in that: The second mounting head (5) and the first mounting head (6) are both fixedly connected to the side walls with threaded rods (23), the side walls of the two threaded rods (23) are both threadedly connected to nuts (22), and the second mounting head (5) and the first mounting head (6) are both respectively passed through the side walls of the first connection frame (3) and the second connection frame (4) through the threaded rods (23).

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