Coupling for pin shaft

Abstract

The utility model relates to the field of couplings, and discloses a coupling for a pin shaft, which comprises a first shaft body, a second shaft body is arranged on the right side of the first shaft body, an axial fixing mechanism is arranged on the outer side of the first shaft body and the outer side of the second shaft body, and a connecting mechanism is arranged on the outer side of the first shaft body and the outer side of the second shaft body. The axial fixing mechanism comprises a spacing shaft tube, two mounting grooves are formed in the outer surface of the spacing shaft tube, and the two mounting grooves are distributed up and down and symmetrically formed relative to the center line. According to the coupling for the pin shaft, the axial fixing mechanism is arranged, the overall structure of the spaced shaft pipes is changed, the effect of connecting and fixing the first shaft body and the second shaft body can be achieved through a dismounting block, a first through hole, a second through hole, a mounting groove and a connecting rod, and the purpose of preventing the first shaft body and the second shaft body from axially moving is achieved; the problem that the transmission effect is affected after axial movement is generated between the first shaft body and the second shaft body is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of couplings, in particular to a coupling for a pin shaft. Background Art

[0002] A coupling is a device that connects two shafts or a shaft and a rotating part. They rotate together during the transmission of motion and power and do not disengage under normal circumstances. It is sometimes also used as a safety device to prevent the connected parts from being subjected to excessive loads, thus playing the role of overload protection. It is often composed of two halves, which are connected by keys or tight fits, fastened to the two shaft ends, and then connected in some way. The coupling can compensate for the offset between the two shafts due to inaccurate manufacturing and installation, deformation during operation or thermal expansion, as well as alleviate impact and absorb vibration.

[0003] The coupling is mainly used to transmit power and support rotation. The shaft will rotate in a circle following the coupling, but the coupling cannot fix the coupling axially, which will cause separation between the two shafts due to vibration and other effects, and easily affect the transmission effect between the two shafts. Therefore, those skilled in the art provide a coupling for a pin shaft to solve the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the present utility model is to provide a coupling for a pin shaft to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A pin coupling includes a first shaft body, a second shaft body is provided on the right side of the first shaft body, an axial fixing mechanism is provided on the outer side of the first shaft body and the outer side of the second shaft body, and a connecting mechanism is provided on the outer side of the first shaft body and the outer side of the second shaft body;

[0007] The axial fixing mechanism includes a spacer shaft tube, and two mounting grooves are provided on the outer surface of the spacer shaft tube. The two mounting grooves are distributed up and down and are symmetrically opened with respect to the center line. A disassembly block is clamped inside each mounting groove, and the outer surface of each disassembly block is aligned with the outer surface of the first shaft body and the outer surface of the second shaft body. A first through hole is provided on the outer surface of the first shaft body and the outer surface of the second shaft body, and two second through holes are provided on the side surfaces of the two disassembly blocks away from each other. The inner wall of the first through hole and the inner wall of the second through hole are jointly threadedly connected with a connecting rod.

[0008] As a further solution of the present invention: the connecting mechanism includes a large-end mounting plate, and a connecting flange is provided on the left side of the large-end mounting plate.

[0009] As a further solution of the present invention: the inner wall of the large-end mounting plate is threadedly connected with two groups of first bolts, the outer surface of each group of first bolts is threadedly connected to the inner wall of the adapter flange, the outer surface of each first bolt is threadedly connected with a first self-locking nut, and the right side of each first self-locking nut is in contact with the outer surface of the adapter flange.

[0010] As a further solution of the present invention: the inner wall of the adapter flange is threadedly connected with two groups of fixing bolts, and the outer surface of each group of the fixing bolts is threadedly connected to the inner wall of the spacer shaft tube.

[0011] As a further solution of the present invention: a small-end mounting plate is provided on the left side of the spacer shaft tube, and the interior of the small-end mounting plate and the interior of the large-end mounting plate are respectively engaged with the outer surface of the first shaft body and the outer surface of the second shaft body.

[0012] As a further solution of the present invention: the inner wall of the spacer shaft tube is threadedly connected with two groups of second bolts, the outer surface of each group of second bolts is threadedly connected to the inner wall of the small end mounting plate, the outer surface of each group of second bolts is threadedly connected with a second self-locking nut, and the outer surface of each second self-locking nut is in contact with the outer surface of the small end mounting plate.

[0013] As a further solution of the present invention: a lamination is provided on the right side of the small-end mounting disk, and the right side of the lamination is in contact with the left side of the spacer shaft tube.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The utility model is provided with an axial fixing mechanism to change the overall structure of the spacer shaft tube. The disassembly block, the first through hole, the second through hole, the installation groove and the connecting rod can be used to connect and fix the first shaft body and the second shaft body, thereby preventing the first shaft body and the second shaft body from moving axially, so as to avoid the problem of affecting the transmission effect due to axial movement between the first shaft body and the second shaft body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a pin coupling;

[0017] Figure 2 This is a three-dimensional structural diagram of a small-end mounting plate of a pin coupling;

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of a spacer shaft tube in a pin coupling;

[0019] Figure 4 This is a schematic diagram of the three-dimensional structural splitting of a disassembly block in a pin coupling.

[0020] In the figure: 1. First shaft body; 2. Second shaft body; 3. Connecting mechanism; 301. Large-end mounting plate; 302. Adapter flange; 303. First self-locking nut; 304. First bolt; 305. Fixing bolt; 306. Small-end mounting plate; 307. Second self-locking nut; 308. Second bolt; 309. Lamination; 4. Axial fixing mechanism; 401. Spacer shaft tube; 402. Mounting groove; 403. Disassembly block; 404. First through hole; 405. Second through hole; 406. Connecting rod. DETAILED DESCRIPTION

[0021] See also Figure 1-4 A pin coupling comprises a first shaft body 1, a second shaft body 2 is provided on the right side of the first shaft body 1, an axial fixing mechanism 4 is provided on the outer side of the first shaft body 1 and the outer side of the second shaft body 2, and a connecting mechanism 3 is provided on the outer side of the first shaft body 1 and the outer side of the second shaft body 2;

[0022] The axial fixing mechanism 4 includes a spacer shaft tube 401, and two mounting grooves 402 are provided on the outer surface of the spacer shaft tube 401. The two mounting grooves 402 are distributed up and down and are symmetrically opened with respect to the center line. A disassembly block 403 is clamped inside each mounting groove 402, and the outer surface of each disassembly block 403 is aligned with the outer surface of the first shaft body 1 and the outer surface of the second shaft body 2. A first through hole 404 is provided on the outer surface of the first shaft body 1 and the outer surface of the second shaft body 2. Two second through holes 405 are provided on the side surfaces away from each other of the two disassembly blocks 403. The inner wall of the first through hole 404 and the inner wall of the second through hole 405 are jointly threadedly connected with a connecting rod 406.

[0023] Specifically, the connecting mechanism 3 includes a large-end mounting plate 301 , and a connecting flange 302 is provided on the left side of the large-end mounting plate 301 .

[0024] Through the above technical solution, through the large end mounting plate 301 and the adapter flange 302 , the large end mounting plate 301 is a general structure of a coupling, and the adapter flange 302 is used to connect the spacer shaft tube 401 and the large end mounting plate 301 .

[0025] Specifically, the inner wall of the large-end mounting plate 301 is threadedly connected with two groups of first bolts 304, the outer surface of each group of first bolts 304 is threadedly connected to the inner wall of the adapter flange 302, the outer surface of each first bolt 304 is threadedly connected with a first self-locking nut 303, and the right side of each first self-locking nut 303 is in contact with the outer surface of the adapter flange 302.

[0026] Through the above technical solution, by providing a first bolt 304 and a first self-locking nut 303, the first bolt 304 is used to connect the adapter flange 302 and the large-end mounting plate 301, and has a certain fixing effect, and then the first self-locking nut 303 is used to tighten the first bolt 304.

[0027] Specifically, the inner wall of the adapter flange 302 is threadedly connected to two groups of fixing bolts 305 , and the outer surface of each group of fixing bolts 305 is threadedly connected to the inner wall of the spacer shaft tube 401 .

[0028] Through the above technical solution, the fixing bolt 305 is used to connect the spacer shaft tube 401 and the adapter flange 302, thereby achieving the purpose of installing the spacer shaft tube 401 on the adapter flange 302.

[0029] Specifically, a small-end mounting plate 306 is provided on the left side of the spacer shaft tube 401 , and the interior of the small-end mounting plate 306 and the interior of the large-end mounting plate 301 are respectively engaged with the outer surface of the first shaft body 1 and the outer surface of the second shaft body 2 .

[0030] Through the above technical solution, the small-end mounting plate 306 is the other half of the coupling, and forms a coupling with the spacer shaft tube 401, the adapter flange 302 and the large-end mounting plate 301 to achieve the effect of the coupling.

[0031] Specifically, the inner wall of the spacer shaft tube 401 is threadedly connected with two groups of second bolts 308, and the outer surface of each group of second bolts 308 is threadedly connected to the inner wall of the small end mounting plate 306. The outer surface of each group of second bolts 308 is threadedly connected with a second self-locking nut 307, and the outer surface of each second self-locking nut 307 is in contact with the outer surface of the small end mounting plate 306.

[0032] Through the above technical solution, by providing the second bolt 308 and the second self-locking nut 307 for connecting the spacer shaft tube 401 and the small end mounting plate 306, the spacer shaft tube 401 and the small end mounting plate 306 can be easily disassembled.

[0033] Specifically, a lamination 309 is provided on the right side of the small-end mounting plate 306 , and the right side of the lamination 309 contacts the left side of the spacer shaft tube 401 .

[0034] Through the above technical solution, the laminations 309 are elastic gaskets to facilitate the transmission of power and torque.

[0035] The working principle of the present invention is as follows: when in use, the first shaft body 1 and the second shaft body 2 are respectively inserted into the small end mounting plate 306 and the large end mounting plate 301, the small end mounting plate 306 and the spacer shaft tube 401 are connected and fixed using the second bolt 308 and the second self-locking nut 307, and then the spacer shaft tube 401 and the adapter flange 302 are connected using the fixing bolt 305, and then the adapter flange 302 and the large end mounting plate 301 are installed using the first bolt 304 and the first self-locking nut 303. 1. The spacer shaft tube 401 and the adapter flange 302 cooperate to complete the connection between the first shaft body 1 and the second shaft body 2. In order to avoid axial movement between the first shaft body 1 and the second shaft body 2, the disassembly block 403 can be installed in the installation groove 402 during use, and the connecting rod 406 can be installed in the first through hole 404 and the second through hole 405 to fix the first shaft body 1 and the second shaft body 2. When the first shaft body 1 and the second shaft body 2 rotate, the connecting rod 406 fixes their positions and no movement occurs between the first shaft body 1 and the second shaft body 2.

[0036] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pin coupling, comprising a first shaft body (1), characterized in that: A second shaft body (2) is provided on the right side of the first shaft body (1); an axial fixing mechanism (4) is provided on the outer side of the first shaft body (1) and the outer side of the second shaft body (2); and a connecting mechanism (3) is provided on the outer side of the first shaft body (1) and the outer side of the second shaft body (2); The axial fixing mechanism (4) includes a spacer shaft tube (401), and the outer surface of the spacer shaft tube (401) is provided with two installation grooves (402), and the two installation grooves (402) are distributed up and down and are symmetrically opened from the center line. A disassembly block (403) is clamped inside each installation groove (402), and the outer surface of each disassembly block (403) is aligned with the outer surface of the first shaft body (1) and the outer surface of the second shaft body (2). The outer surface of the first shaft body (1) and the outer surface of the second shaft body (2) are both provided with a first through hole (404), and the side surfaces of the two disassembly blocks (403) away from each other are both provided with two second through holes (405), and the inner wall of the first through hole (404) and the inner wall of the second through hole (405) are threadedly connected with a connecting rod (406).

2. A pin coupling according to claim 1, characterized in that: The connecting mechanism (3) comprises a large-end mounting plate (301), and a transfer flange (302) is provided on the left side of the large-end mounting plate (301).

3. A pin coupling according to claim 2, characterized in that: The inner wall of the large-end mounting plate (301) is threadedly connected to two groups of first bolts (304), the outer surface of each group of the first bolts (304) is threadedly connected to the inner wall of the adapter flange (302), the outer surface of each first bolt (304) is threadedly connected to a first self-locking nut (303), and the right side of each first self-locking nut (303) is in contact with the outer surface of the adapter flange (302).

4. The pin coupling according to claim 2, characterized in that: The inner wall of the adapter flange (302) is threadedly connected to two groups of fixing bolts (305), and the outer surface of each group of fixing bolts (305) is threadedly connected to the inner wall of the spacer shaft tube (401).

5. The pin coupling according to claim 2, characterized in that: A small-end mounting plate (306) is provided on the left side of the spacer shaft tube (401), and the interior of the small-end mounting plate (306) and the interior of the large-end mounting plate (301) are respectively engaged with the outer surface of the first shaft body (1) and the outer surface of the second shaft body (2).

6. The pin coupling according to claim 5, characterized in that: The inner wall of the spacer shaft tube (401) is threadedly connected to two groups of second bolts (308), the outer surface of each group of the second bolts (308) is threadedly connected to the inner wall of the small-end mounting plate (306), the outer surface of each group of the second bolts (308) is threadedly connected to a second self-locking nut (307), and the outer surface of each second self-locking nut (307) is in contact with the outer surface of the small-end mounting plate (306).

7. The pin coupling according to claim 6, characterized in that: A lamination (309) is provided on the right side of the small-end mounting plate (306), and the right side surface of the lamination (309) contacts the left side surface of the spacer shaft tube (401).

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