Transmission shaft

Abstract

The utility model provides a transmission shaft, which relates to the technical field of transmission components and comprises a first transmission shaft and a second transmission shaft, the second transmission shaft is slidably mounted on the inner wall of the first transmission shaft, and connecting pieces are welded at the ends, far away from each other, of the first transmission shaft and the second transmission shaft. The first transmission shaft and the second transmission shaft are connected through a connecting piece, a mounting piece is rotatably mounted on the inner wall of the connecting piece, and an oil adding device is arranged at the joint of the first transmission shaft and the second transmission shaft. When the second transmission shaft stretches out and draws back on the inner wall of the first transmission shaft, lubricating oil can be gradually brought into the inner wall of the first transmission shaft and the outer surface of the second transmission shaft, friction force between the first transmission shaft and the second transmission shaft is reduced, and then abrasion between the first transmission shaft and the second transmission shaft is reduced; the overall service life of the transmission shaft is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of transmission component technology, and in particular to a transmission shaft. Background Technology

[0002] Feeding machines are devices used in agricultural breeding for various functions such as feed processing, feeding, and mixing. The drive shaft is mainly used to transmit power and connect the power source with the actuators, such as driving the grinding blades and mixing paddles to rotate, and driving the chain and screw to rotate.

[0003] A retractable drive shaft is used in the power input part of the feed pellet mill to connect the motor and the main shaft, stably transmitting the motor's power to the main shaft, driving the pressure roller and other components to rotate and thus pressing the feed pellets. However, during the long-term back-and-forth extension and retraction process, the large friction force will cause excessive wear at the connection of the drive shaft, which will cause the connecting shaft to loosen when transmitting kinetic energy, thereby reducing the service life of the drive shaft. Utility Model Content

[0004] This utility model proposes a new type of drive shaft to address the problem that excessive wear occurs at the connection point of the drive shaft during long-term reciprocating extension and retraction due to high friction, which can lead to loosening of the connecting shaft when transmitting kinetic energy and thus reduce its service life.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a transmission shaft, comprising a first transmission shaft and a second transmission shaft, characterized in that: the second transmission shaft is slidably mounted on the inner wall of the first transmission shaft; a connector is welded to the ends of the first and second transmission shafts that are far apart; an mounting component is rotatably mounted on the inner wall of the connector; an oiling device is provided at the connection between the first and second transmission shafts; the oiling device reduces the friction between the first and second transmission shafts by applying lubricating oil to the connection between the first and second transmission shafts through an internally threaded cylinder capable of storing lubricating oil at one end of the first transmission shaft.

[0006] The effect achieved by the above-mentioned components is as follows: by setting an internal threaded cylinder, the internal threaded cylinder can store lubricating oil. When the lubricating oil in the internal threaded cylinder is applied to the connection between the second drive shaft and the first drive shaft, the second drive shaft will gradually bring the lubricating oil into the inner wall of the first drive shaft and the outer surface of the second drive shaft when the inner wall of the second drive shaft extends and retracts. This helps to reduce the friction between the first drive shaft and the second drive shaft, thereby reducing the wear between the first drive shaft and the second drive shaft and improving the overall service life of the drive shaft.

[0007] Preferably, the oiling device includes an internally threaded cylinder, which is fixedly installed on the outer surface of one end of the second drive shaft. One end of the internally threaded cylinder is flush with one end of the first drive shaft, and an externally threaded cylinder is threadedly connected to the inner wall of the internally threaded cylinder.

[0008] The effect achieved by the above components is as follows: when lubricating oil is injected into the interior of the internal threaded cylinder and the external threaded cylinder is rotated, the external threaded cylinder will push the lubricating oil inside the internal threaded cylinder, causing the lubricating oil to move towards the second drive shaft. The lubricating grease will then be coated at the connection between the second drive shaft and the first drive shaft. When the second drive shaft extends and retracts from the inner wall of the first drive shaft, it will gradually bring the lubricating oil into the inner wall of the first drive shaft and the outer surface of the second drive shaft, which helps to reduce the friction between the first drive shaft and the second drive shaft.

[0009] Preferably, a silicone ring is fixedly installed at one end of the internal threaded cylinder near the first drive shaft, and a plurality of slits are evenly opened on one side of the silicone ring.

[0010] The effect achieved by the above-mentioned components is as follows: by setting a silicone ring with a slit, the silicone ring's excellent deformation ability when not subjected to external pressure will keep the slit in a sealed state, thereby sealing one end of the inner threaded cylinder and preventing the lubricating oil from easily leaving the inner threaded cylinder. When the outer threaded cylinder is rotated to compress the lubricating oil, the silicone ring will be compressed by the lubricating oil, causing the slit to open and facilitating the passage of the lubricating oil.

[0011] Preferably, a sponge ring is fixedly installed on one side of the silicone ring, and the sponge ring is sleeved on the outer surface of the second drive shaft.

[0012] The effect achieved by the above components is as follows: by setting the sponge ring, the sponge ring can absorb the lubricating oil pushed out through the slits of the silicone ring. When the second drive shaft slides on the inner wall of the first drive shaft, it will continuously stick to the lubricating oil on the sponge ring. This makes the lubricating oil coating more uniform. Moreover, since the sponge ring can store a certain amount of lubricating oil, it is beneficial for the second drive shaft to be in a lubricated state for a longer period of time.

[0013] Preferably, a rubber ring is fixedly installed at one end of the external threaded cylinder, and the outer surface of the rubber ring abuts against the inner wall of the internal threaded cylinder.

[0014] The effect achieved by the above components is that by setting the rubber ring, an auxiliary seal can be provided between the external threaded cylinder and the internal threaded cylinder, which helps to prevent lubricating oil from overflowing between the external threaded cylinder and the internal threaded cylinder and causing waste.

[0015] Preferably, an operating ring is fixedly installed at the other end of the external threaded cylinder. The operating ring is sleeved on the outer surface of the first transmission shaft, and the outer surface of the operating ring is uniformly provided with protrusions.

[0016] The effect achieved by the above components is as follows: by setting the operating ring, rotating the operating ring can drive the external threaded cylinder to rotate. At the same time, the outer surface of the operating ring is provided with protrusions, which can effectively increase the friction of the outer surface of the operating ring and have an anti-slip effect when rotating the operating ring.

[0017] Preferably, a screw hole block is symmetrically fixedly installed on one side of the operating ring, and a bolt is threaded into the inner wall of the screw hole block.

[0018] The effect achieved by the above components is as follows: by rotating the two bolts so that one end of the bolts abuts against the outer surface of the first drive shaft, the two bolts can provide auxiliary fixation between the external threaded cylinder connected to the two screw hole blocks and the first drive shaft, which helps to prevent the external threaded cylinder from loosening and causing excessive lubricating oil to be pushed out of the internal threaded cylinder.

[0019] Preferably, rubber strips are symmetrically mounted on the outer surface of the first drive shaft, and the bolts are located on one side of the rubber strips.

[0020] The effect achieved by the above components is that by setting the rubber strip, the outer surface of the first drive shaft can be replaced to abut against one end of the bolt, and the friction between the bolt and the first drive shaft can be increased, making the bolt more securely fixed to the external threaded cylinder.

[0021] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0022] In this invention, by setting an internally threaded cylinder, the internally threaded cylinder can store lubricating oil. When the lubricating oil in the internally threaded cylinder is applied to the connection between the second drive shaft and the first drive shaft, the second drive shaft will gradually bring the lubricating oil into the inner wall of the first drive shaft and the outer surface of the second drive shaft when the second drive shaft extends and retracts from the inner wall of the first drive shaft. This helps to reduce the friction between the first drive shaft and the second drive shaft, thereby reducing the wear between the first drive shaft and the second drive shaft and improving the overall service life of the drive shaft. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the main body of this utility model;

[0024] Figure 2 This is a cross-sectional view of the internally threaded cylinder of this utility model.

[0025] Figure 3 This utility model Figure 2 A magnified structural diagram at point A;

[0026] Figure 4 This is a three-dimensional structural diagram of the oiling device of this utility model.

[0027] Legend: 1. First drive shaft; 2. Second drive shaft; 3. Connector; 4. Mounting component; 5. Oiling device; 51. Internal threaded cylinder; 52. External threaded cylinder; 53. Silicone ring; 54. Sponge ring; 55. Rubber ring; 56. Operating ring; 57. Screw hole block; 58. Bolt; 59. Rubber strip. Detailed Implementation

[0028] Example 1, referring to Figures 1-3 As shown, this embodiment discloses a drive shaft (the drive shaft can be of type SWC, which can be used as the power input part of a feed pellet mill. Since the motor position may not be on the same straight line as the main shaft of the pellet mill due to equipment layout or space limitations during operation, a universal joint can be used to connect the motor and the main shaft, stably transmitting the motor's power to the main shaft, driving components such as the pressure roller to rotate, thus achieving feed pellet pressing). It includes a first drive shaft 1 and a second drive shaft 2. The second drive shaft 2 is slidably mounted on the inner wall of the first drive shaft 1. Connecting parts 3 are welded to the ends of both the first and second drive shafts that are far apart. Mounting parts 4 are rotatably mounted on the inner wall of the connecting parts 3. An oiling device 5 is provided at the connection point of the first drive shaft 1 and the second drive shaft 2. The oiling device 5 reduces the friction between the first drive shaft 1 and the second drive shaft 2 by applying lubricating oil to the connection between the first drive shaft 1 and the second drive shaft 2 through an internally threaded cylinder 51 that can store lubricating oil at one end of the first drive shaft 1. By providing the internally threaded cylinder 51, which can store lubricating oil, the lubricating oil in the internally threaded cylinder 51 is applied to the connection between the second drive shaft 2 and the first drive shaft 1. When the second drive shaft 2 extends and retracts from the inner wall of the first drive shaft 1, it will gradually bring the lubricating oil into the inner wall of the first drive shaft 1 and the outer surface of the second drive shaft 2. This helps to reduce the friction between the first drive shaft 1 and the second drive shaft 2, thereby reducing the wear between the first drive shaft 1 and the second drive shaft 2 and improving the overall service life of the drive shaft.

[0029] Reference Figure 2 and Figure 3As shown, the oiling device 5 includes an internally threaded cylinder 51, which is fixedly installed on the outer surface of one end of the second drive shaft 2. One end of the internally threaded cylinder 51 is flush with one end of the first drive shaft 1. An externally threaded cylinder 52 is threadedly connected to the inner wall of the internally threaded cylinder 51. Lubricating oil is injected into the interior of the internally threaded cylinder 51. When the externally threaded cylinder 52 is rotated, it pushes the lubricating oil inside the internally threaded cylinder 51, causing the lubricating oil to move towards the second drive shaft 2. The lubricating grease will then be coated at the connection between the second drive shaft 2 and the first drive shaft 1. When the second drive shaft 2 extends and retracts along the inner wall of the first drive shaft 1, it will gradually bring the lubricating oil into the inner wall of the first drive shaft 1 and the second drive shaft 2. The outer surface of the drive shaft 2 helps to reduce the friction between the first drive shaft 1 and the second drive shaft 2. A silicone ring 53 is fixedly installed at one end of the internal threaded cylinder 51 near the first drive shaft 1. Several slits are evenly opened on one side of the silicone ring 53. By setting the silicone ring 53 with slits, when the silicone ring 53 is not squeezed by external force, its own excellent deformation ability will keep the slits in a sealed state, thereby sealing one end of the internal threaded cylinder 51, so that the lubricating oil will not easily leave the internal threaded cylinder 51. When the external threaded cylinder 52 is rotated to squeeze the lubricating oil, the silicone ring 53 will be squeezed by the lubricating oil and the slits will open, which will facilitate the passage of the lubricating oil.

[0030] Reference Figure 2 and Figure 3 As shown, a sponge ring 54 is fixedly installed on one side of the silicone ring 53. The sponge ring 54 is sleeved on the outer surface of the second drive shaft 2. By setting the sponge ring 54, the sponge ring 54 can absorb the lubricating oil pushed out through the slits of the silicone ring 53. When the second drive shaft 2 slides on the inner wall of the first drive shaft 1, it will continuously stick to the lubricating oil on the sponge ring 54. This makes the lubricating oil coating more uniform. Since the sponge ring 54 can store a certain amount of lubricating oil, it is beneficial for the second drive shaft 2 to be in a lubricated state for a longer period of time. A rubber ring 55 is fixedly installed on one end of the external threaded cylinder 52. The outer surface of the rubber ring 55 abuts against the inner wall of the internal threaded cylinder 51. By setting the rubber ring 55, an auxiliary seal can be provided between the external threaded cylinder 52 and the internal threaded cylinder 51, which helps to prevent the lubricating oil from overflowing between the external threaded cylinder 52 and the internal threaded cylinder 51 and causing waste.

[0031] Reference Figure 4 As shown, an operating ring 56 is fixedly installed at the other end of the external threaded cylinder 52. The operating ring 56 is sleeved on the outer surface of the first transmission shaft 1. The outer surface of the operating ring 56 is uniformly provided with protrusions. By setting the operating ring 56, rotating the operating ring 56 can drive the external threaded cylinder 52 to rotate. At the same time, the protrusions on the outer surface of the operating ring 56 can effectively increase the friction of the outer surface of the operating ring 56, and have an anti-slip effect when rotating the operating ring 56.

[0032] Reference Figure 4 As shown, screw hole blocks 57 are symmetrically fixedly installed on one side of the operating ring 56. Bolts 58 are threaded into the inner wall of the screw hole blocks 57. By rotating the two bolts 58, one end of the bolts 58 abuts against the outer surface of the first drive shaft 1. The two bolts 58 can provide auxiliary fixation between the external threaded cylinder 52 connected to the two screw hole blocks 57 and the first drive shaft 1. This helps to prevent the external threaded cylinder 52 from loosening and causing excessive lubricating oil to be pushed out of the internal threaded cylinder 51. Rubber strips 59 are symmetrically installed on the outer surface of the first drive shaft 1. The bolts 58 are set on one side of the rubber strips 59. By setting the rubber strips 59, they can replace the outer surface of the first drive shaft 1 to abut against one end of the bolts 58 and increase the friction between the bolts 58 and the first drive shaft 1, making the fixation of the bolts 58 to the external threaded cylinder 52 more stable.

[0033] Working principle: A slit is provided on the silicone ring 53 at one end of the internal threaded cylinder 51. When the silicone ring 53 is not subjected to external pressure, its excellent deformation ability keeps the slit closed, thus sealing one end of the internal threaded cylinder 51 and preventing lubricating oil from flowing out. Rotating the operating ring 56 causes the external threaded cylinder 52 to rotate within the inner wall of the internal threaded cylinder 51. The external threaded cylinder 52 pushes the lubricating oil inside the internal threaded cylinder 51, causing the lubricating oil to squeeze the silicone ring 53. This opens the slit on the silicone ring 53, allowing the lubricating oil to be absorbed by the sponge ring 54 through the slit. After absorbing a certain amount of lubricating oil, the sponge ring 54 continuously absorbs the lubricating oil. When the second drive shaft 2 slides along the inner wall of the first drive shaft 1, the sponge ring 54 will continuously adhere to the lubricating oil. The lubricating oil is taken from the sponge ring 54, which makes the lubricating oil coating more uniform. Since the sponge ring 54 can store a certain amount of lubricating oil, it is beneficial to keep the second drive shaft 2 in a lubricated state for a longer period of time, thereby reducing the friction between the first drive shaft 1 and the second drive shaft 2, thus reducing the wear between the first drive shaft 1 and the second drive shaft 2, and improving the overall service life of the drive shaft. Rotating the two bolts 58 so that one end of the bolts 58 abuts against the rubber strip 59 on the outer surface of the first drive shaft 1, the two bolts 58 can provide auxiliary fixation between the external threaded cylinder 52 connected to the two screw hole blocks 57 and the first drive shaft 1, which helps to prevent the external threaded cylinder 52 from loosening and causing excessive lubricating oil to be pushed out of the internal threaded cylinder 51.

Claims

1. A drive shaft, comprising a first drive shaft (1) and a second drive shaft (2), characterized in that: The second drive shaft (2) is slidably mounted on the inner wall of the first drive shaft (1). A connector (3) is welded to the ends of the first drive shaft (1) and the second drive shaft (2) that are far apart. An installation part (4) is rotatably mounted on the inner wall of the connector (3). An oiling device (5) is provided at the connection between the first drive shaft (1) and the second drive shaft (2). The oiling device (5) reduces the friction between the first drive shaft (1) and the second drive shaft (2) by applying lubricating oil to the connection between the first drive shaft (1) and the second drive shaft (2) through an internally threaded cylinder (51) that can store lubricating oil at one end of the first drive shaft (1).

2. A transmission shaft according to claim 1, characterized in that: The oiling device (5) includes an internal threaded cylinder (51), which is fixedly installed on the outer surface of one end of the second drive shaft (2). One end of the internal threaded cylinder (51) is flush with one end of the first drive shaft (1). The inner wall of the internal threaded cylinder (51) is threadedly connected to an external threaded cylinder (52), and lubricating oil is injected into the interior of the internal threaded cylinder (51).

3. A transmission shaft according to claim 2, characterized in that: A silicone ring (53) is fixedly installed at one end of the internal threaded cylinder (51) near the first drive shaft (1), and a number of slits are evenly opened on one side of the silicone ring (53).

4. A transmission shaft according to claim 3, characterized in that: A sponge ring (54) is fixedly installed on one side of the silicone ring (53), and the sponge ring (54) is sleeved on the outer surface of the second drive shaft (2).

5. A transmission shaft according to claim 2, characterized in that: A rubber ring (55) is fixedly installed at one end of the external threaded cylinder (52), and the outer surface of the rubber ring (55) abuts against the inner wall of the internal threaded cylinder (51).

6. A transmission shaft according to claim 2, characterized in that: An operating ring (56) is fixedly installed at the other end of the external threaded cylinder (52). The operating ring (56) is sleeved on the outer surface of the first transmission shaft (1), and the outer surface of the operating ring (56) is uniformly provided with protrusions.

7. A transmission shaft according to claim 6, characterized in that: A screw hole block (57) is symmetrically fixedly installed on one side of the operating ring (56), and a bolt (58) is threaded into the inner wall of the screw hole block (57).

8. A transmission shaft according to claim 7, characterized in that: Rubber strips (59) are symmetrically mounted on the outer surface of the first drive shaft (1), and the bolts (58) are located on one side of the rubber strips (59).

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