Geological compass

Abstract

The utility model discloses a geological compass, relates to the technical field of geological survey, and solves the technical problem that an upper cover of a geological compass in the prior art is easy to loosen. The geological compass comprises a first part and a second part, the connecting shaft is used for connecting the first part and the second part, and the first part is configured to be capable of overturning relative to the second part around the axis of the connecting shaft; wherein the connecting shaft comprises a shaft main body, a first locking piece and a second locking piece, the shaft main body is provided with an end part and a main body part, the end part is connected with the main body part, the first locking piece is provided with a first internal thread, the second locking piece is provided with a first external thread, the rotating direction of the first internal thread is opposite to that of the first external thread, and the first internal thread and the first external thread are both matched with the end part thread; the second locking piece is configured to abut against the first locking piece when the second locking piece is screwed into the main body part. Therefore, due to the arrangement of the first locking piece and the second locking piece, the upper cover of the geological compass provided by the utility model is not easy to loosen.

Description

Technical Field

[0001] The utility model belongs to the technical field of geological measurement, and in particular relates to a geological compass. Background Art

[0002] The geological compass, also known as the "pocket theodolite", is an indispensable tool for field geological work. It mainly includes a magnetic needle, a level and an inclinometer. Structurally, it can be divided into a chassis, a shell and an upper cover. The main instruments are fixed on the chassis, and the three are connected into a whole by a connecting shaft. It can be used to identify direction, determine location, measure the occurrence of geological bodies and survey topographic maps, etc.

[0003] However, after the geological compass in the prior art has been used for a long time, the fixing nuts at both ends of the shaft connecting the compass cover and the compass base are easy to loosen, causing the compass cover to loosen or even fall off, and further causing the geological compass to be easily damaged. Utility Model Content

[0004] The utility model provides a geological compass, which is used to solve the technical problem that the upper cover of the geological compass in the prior art is easy to loosen.

[0005] The utility model is realized through the following technical solutions:

[0006] A geological compass, comprising:

[0007] Part I and Part II;

[0008] A connecting shaft, used to connect the first part and the second part, wherein the first part is configured to be able to flip relative to the second part along the axis of the connecting shaft;

[0009] Among them, the connecting shaft includes a shaft body, a first locking member and a second locking member, the shaft body has an end and a main body, the end is connected to the main body, the first locking member has a first internal thread, the second locking member has a first external thread, the first internal thread and the first external thread have opposite rotation directions, the first internal thread and the first external thread are both matched with the end thread, and the second locking member is configured to be able to press against the first locking member when the second locking member is screwed into the main body.

[0010] Furthermore, the end portion is a circular ring installed at one end of the main body, the inner wall of the circular ring is provided with a second internal thread adapted to the first external thread, and the outer wall of the circular ring is provided with a second external thread adapted to the first internal thread.

[0011] Furthermore, there are two circular rings, which are coaxially arranged with the main body, and each of the circular rings is provided with the first locking member and the second locking member.

[0012] Further, the second locking member includes:

[0013] A round rod, wherein the first external thread is arranged on an outer side wall of the round rod;

[0014] The abutment plate is installed at either end of the round rod, and one end of the first section close to the round rod is tightly abutted against the first locking member.

[0015] Furthermore, a groove is formed at one end of the abutment plate away from the round rod.

[0016] Furthermore, a vertical distance from an edge of the abutment plate to the axis of the connecting shaft is equal to a vertical distance from an edge of the first locking member to the axis of the connecting shaft.

[0017] Furthermore, the first locking member is a hexagonal nut.

[0018] Furthermore, it also includes a gasket installed between the hexagonal nut and the abutment plate.

[0019] Furthermore, the gasket is a spring gasket.

[0020] Furthermore, the first part or the second part is fixedly connected to the main body.

[0021] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0022] The geological compass provided by the utility model comprises a first part, a second part and a connecting shaft, the connecting shaft is used to connect the first part and the second part, the first part is configured to be able to flip relative to the second part with the axis of the connecting shaft, wherein the connecting shaft comprises a shaft body, a first locking member and a second locking member, the shaft body has an end and a main body, the end is connected to the main body, the first locking member has a first internal thread, the second locking member has a first external thread, the first internal thread and the first external thread have opposite rotation directions, the first internal thread and the first external thread are both matched with the end thread, and the second locking member is configured to be able to press against the first locking member when the second locking member is screwed into the main body. Through the above structure, when the geological compass provided by the utility model is used, when the first part is flipped relative to the second part, friction occurs between the first part and the first locking piece, thereby driving the first locking piece to rotate in a direction away from the main body. When the first locking piece rotates, the second locking piece is driven to rotate in the same direction, and the first internal thread on the first locking piece and the first external thread on the second locking piece have opposite rotation directions, so that the second locking piece moves in a direction close to the main body, thereby achieving the purpose of tightening the first locking piece. Therefore, through the arrangement of the first locking piece and the second locking piece, the upper cover of the geological compass provided by the utility model is not easy to loosen, and thus it is not easy to be damaged and has a longer service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, constitute a part of this application, and do not constitute a limitation of the embodiments of the present utility model. In the drawings:

[0024] Figure 1 A schematic diagram of the structure of a geological compass provided by an embodiment of the utility model;

[0025] Figure 2 A schematic diagram of the structure of the connecting shaft provided in an embodiment of the utility model;

[0026] Figure 3 An exploded view of the connecting shaft provided in an embodiment of the utility model.

[0027] Marks and corresponding parts names in the attached drawings:

[0028] 1-first part, 2-second part, 3-connecting shaft, 31-shaft body, 311-circular ring, 312-main body, 32-hexagonal nut, 33-second locking piece, 331-round rod, 332-abutment plate, 3321-groove, 4-spring washer. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation manner of the utility model and its description are only used to explain the utility model and are not intended to limit the utility model.

[0030] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or indirectly on the other component. When a component is referred to as being "connected to" another component, it can be directly or indirectly connected to the other component.

[0031] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0033] Example:

[0034] This embodiment provides a geological compass, which is used to solve the technical problem that the upper cover of the geological compass in the prior art is easy to loosen. The geological compass includes a first part 1, a second part 2 and a connecting shaft 3, wherein:

[0035] The connecting shaft 3 is used to connect the first part 1 and the second part 2 . The first part 1 is configured to be able to flip relative to the second part 2 along the axis of the connecting shaft 3 , that is, the first part 1 and the second part 2 are hinged through the connecting shaft 3 .

[0036] The connecting shaft 3 includes a shaft body 31, a first locking member and a second locking member 33. The shaft body 31 has an end and a main body 312. The end is connected to the main body 312. The first locking member has a first internal thread, and the second locking member has a first external thread. The first internal thread and the first external thread have opposite rotation directions. The first internal thread and the first external thread are both matched with the end thread. The second locking member 33 is configured to be able to tighten the first locking member when the second locking member 33 is screwed into the main body 312. In this way, the shaft body 31, the first locking member and the second locking member 33 connected by threaded matching are more convenient for disassembly and assembly of the geological compass provided by the embodiment of the utility model, and thus convenient for replacement of parts.

[0037] Through the above structure, when the geological compass provided by the utility model is used, when the first part 1 is flipped relative to the second part 2, friction occurs between the first part 1 and the first locking member, thereby driving the first locking member to rotate in a direction away from the main body 312. When the first locking member rotates, the second locking member is driven to rotate in the same direction, and the first internal thread on the first locking member and the first external thread on the second locking member 33 have opposite rotation directions, so that the second locking member 33 moves in a direction close to the main body 312, thereby achieving the purpose of tightening the first locking member. Therefore, through the arrangement of the first locking member and the second locking member 33, the upper cover of the geological compass provided by the utility model is not easy to loosen, and thus it is not easy to be damaged and has a longer service life.

[0038] An optional implementation of this embodiment is as follows: the end is a circular ring 311, which is installed at one end of the main body 312. It should be noted that the circular ring 311 can be connected to the main body 312 by welding, bonding or hot melting. Of course, it can also be integrally formed. The inner wall of the circular ring 311 is provided with a second internal thread that is compatible with the first external thread, and the outer wall of the circular ring 311 is provided with a second external thread that is compatible with the first internal thread. When in use, the first locking member is screwed onto the outside of the circular ring 311, and the second locking member 33 is screwed into the inside of the circular ring 311 and abuts against the end of the first locking member away from the shaft body 31.

[0039] Optionally, there are two rings 311, which are respectively installed at both ends of the main body 312, and the two rings 311 are coaxially arranged with the main body 312. Each ring 311 is provided with a first locking member and a second locking member 33. In this way, through the arrangement of two rings 311, two first locking members and two second locking members 33, when the geological compass provided by the embodiment of the utility model needs to be disassembled, it can be disassembled from either end of the connecting shaft 3 to replace or repair damaged parts.

[0040] An optional implementation of this embodiment is as follows: the second locking member 33 includes a round rod 331 and an abutment plate 332, wherein:

[0041] The round rod 331 is a solid cylinder, and the first external thread is disposed on the outer side wall of the round rod 331 .

[0042] The abutment plate 332 is installed at either end of the round rod 331, and the end of the abutment plate 332 close to the round rod 331 is pressed against the first locking member. Optionally, the length of the round rod 331 is less than or equal to the length of the ring 311. In this way, when the round rod 331 is screwed into the inside of the ring 311, the abutment plate 332 is pressed against the first locking member to prevent the first locking member from being screwed out of the ring 311.

[0043] Optionally, a groove 3321 is formed at one end of the abutment plate 332 away from the round rod 331. Thus, the second locking member 33 can be easily unscrewed from the ring 311 by the provision of the groove 3321, thereby facilitating the disassembly of the compass provided by the embodiment of the utility model.

[0044] An optional implementation of this embodiment is as follows: the vertical distance from the edge of the abutment plate 332 to the axis of the connecting shaft 3 is equal to the vertical distance from the edge of the first locking member to the axis of the connecting shaft 3, so that it is easier for the abutment plate 332 to press the first locking member tightly.

[0045] An optional implementation of this embodiment is as follows: Optionally, the first locking member is a rotating body having a through hole along a first direction, and the first internal thread is arranged on the inner wall of the through hole. Optionally, the first locking member can be a hexagonal nut 32, which saves manufacturing costs and is replaceable.

[0046] An optional implementation of this embodiment is as follows: it also includes a gasket 4 installed between the hexagonal nut 32 and the abutment plate 332. The gasket 4 is provided to enhance the tightness and stability between the hexagonal nut 32 and the abutment plate 332.

[0047] Optionally, the gasket 4 is a spring gasket, which is light and low in cost. Of course, it can also be a plastic gasket.

[0048] An optional implementation of this embodiment is as follows: the first part 1 or the second part 2 is fixedly connected to the main body 312 .

[0049] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A geological compass, characterized in that: include: Part I (1) and Part II (2); a connecting shaft (3) for connecting the first part (1) and the second part (2), wherein the first part (1) is configured to be capable of turning over relative to the second part (2) along the axis of the connecting shaft (3); Wherein, the connecting shaft (3) includes a shaft body (31), a first locking member and a second locking member (33), the shaft body (31) has an end and a main body (312), the end is connected to the main body (312), the first locking member has a first internal thread, the second locking member (33) has a first external thread, the first internal thread and the first external thread have opposite rotation directions, the first internal thread and the first external thread are both matched with the end thread, and the second locking member (33) is configured to be able to press against the first locking member when the second locking member (33) is screwed into the main body (312).

2. A geological compass according to claim 1, characterized in that: The end portion is a circular ring (311) mounted on one end of the main body (312); the inner wall of the circular ring (311) is provided with a second inner thread matched with the first outer thread; the outer wall of the circular ring (311) is provided with a second outer thread matched with the first inner thread.

3. A geological compass according to claim 2, characterized in that: There are two circular rings (311), which are respectively installed at two ends of the main body (312), and the two circular rings (311) are coaxially arranged with the main body (312), and each of the circular rings (311) is provided with the first locking member and the second locking member (33).

4. A geological compass according to claim 3, characterized in that: The second locking member (33) comprises: A round rod (331), wherein the first external thread is arranged on an outer side wall of the round rod (331); The abutment plate (332) is installed at either end of the round rod (331), and one end of the abutment plate (332) close to the round rod (331) is tightly abutted against the first locking member.

5. A geological compass according to claim 4, characterized in that: A groove (3321) is formed at one end of the abutment plate (332) away from the round rod (331).

6. A geological compass according to claim 5, characterized in that: The vertical distance from the edge of the abutment plate (332) to the axis of the connecting shaft (3) is equal to the vertical distance from the edge of the first locking member to the axis of the connecting shaft (3).

7. A geological compass according to claim 6, characterized in that: The first locking member is a hexagonal nut (32).

8. A geological compass according to claim 7, characterized in that: It also includes a gasket (4) installed between the hexagonal nut (32) and the abutment plate (332).

9. A geological compass according to claim 8, characterized in that: The gasket (4) is a spring gasket.

10. A geological compass according to any one of claims 1 to 9, characterized in that: The first part (1) or the second part (2) is fixedly connected to the main body (312).

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