Gearbox clutch structure

Abstract

The utility model discloses a gearbox clutch structure. The clutch comprises a clutch hub and a clutch plate with outer teeth, a spline groove used for being connected to a transmission shaft in a sleeved mode is formed in the middle of the clutch hub, a circle of main tooth grooves matched with the outer teeth are formed in the clutch hub in the circumferential direction, and at least one circle of standby tooth grooves identical to the main tooth grooves are formed in the gap of the main tooth grooves at equal intervals. The standby tooth grooves are used for replacing the main tooth grooves when the main tooth grooves are abraded. The clutch hub has the advantages that at least one circle of standby tooth groove is formed in the interval of the main tooth groove by utilizing the tooth space, so that the clutch hub does not need to be integrally replaced when the abrasion of the main tooth groove exceeds the limit, but the standby tooth groove can be used for working, the service life of each clutch hub is greatly prolonged, the maintenance cost is saved, and the efficiency of a machine is improved; the speed sensor is arranged outside the clutch hub, so that a technician can know the abrasion condition of the tooth groove more timely by detecting the smoothness of gear up and gear down, and the loss caused by excessive abrasion of the tooth groove is reduced.

Description

Technical Field

[0001] This utility model relates to a clutch, specifically a gearbox clutch structure. Background Technology

[0002] In a gearbox separator, gear shifting is typically achieved by the external teeth of the clutch disc engaging with the internal teeth of the high and low gear clutch hubs. After prolonged use, the internal teeth of the clutch hub will inevitably wear down. As the wear gradually increases, a jerking sensation will occur when the gearbox shifts gears, significantly reducing transmission efficiency. The wear rate of other components will also accelerate as a result. Failure to replace the clutch hub in time may lead to equipment damage. Replacing the clutch hub directly would not only incur high costs but also delay equipment operation. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a gearbox clutch structure with long service life and low cost.

[0004] To solve the above-mentioned technical problems, the present invention provides a gearbox clutch structure, including a clutch hub and a clutch disc with external teeth. The clutch hub has a spline groove in the middle for fitting onto a drive shaft. The clutch hub has a main tooth groove that matches the external teeth along the circumferential direction, and at least one spare tooth groove that is exactly the same is provided at equal intervals in the gap between the main tooth grooves. The spare tooth groove is used to replace the main tooth groove when it wears.

[0005] The clutch disc comprises steel plates and friction plates arranged alternately in sequence, and the external teeth are arranged on the outer circumference of the steel plates.

[0006] The steel sheet and the friction plate are two pieces each.

[0007] A speed sensor is installed on the outside of the clutch hub.

[0008] The clutch hub has an oil guide ring groove.

[0009] The main tooth groove and the spare tooth groove each revolution have thirty teeth.

[0010] The root radius of the main tooth groove and the spare tooth groove is 1-1.5mm.

[0011] The root fillet radius of the main tooth groove and the spare tooth groove is 1.2 mm.

[0012] The clutch hub is made of SAE4140 alloy steel.

[0013] The advantages of this invention are: by utilizing the tooth spacing to create at least one spare tooth groove in the interval between the main tooth grooves, when the main tooth groove wears beyond its limit, it is not necessary to replace the entire clutch hub. Instead, the spare tooth groove can be used to replace the main tooth groove, greatly improving the service life of each clutch hub, saving maintenance costs, and improving the overall efficiency of the machine. Furthermore, a speed sensor is installed outside the clutch hub, allowing technicians to more promptly understand the tooth groove wear by detecting the smoothness of gear shifting, thus reducing losses caused by excessive tooth groove wear. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a traditional clutch hub with only the main tooth groove.

[0015] Figure 2 A schematic diagram showing a ring of spare tooth grooves for this utility model;

[0016] Figure 3 This is a schematic diagram showing two rings of spare tooth grooves for this utility model. Detailed Implementation

[0017] The gearbox clutch structure of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] As shown in the figure, the gearbox clutch structure of this utility model includes a clutch hub 1 made of SAE4140 alloy steel and a clutch plate with external teeth 9. The clutch hub 1 has a splined groove 2 in the center for fitting onto the drive shaft. A main tooth groove 3 matching the external teeth 9 is formed circumferentially inside the clutch hub 1, and a spare tooth groove 4 identical to the main tooth groove 9 is formed at equal intervals in the gap between the main tooth groove 3 and the spare tooth groove 4. The spare tooth groove 4 is used to replace the main tooth groove 3 when it wears. The main tooth groove 3 and each spare tooth groove 4 have thirty teeth, and their root radius is 1-1.5mm, preferably 1.2mm. The clutch plate includes alternating steel plates 7 and friction plates 8. The external teeth 9 are arranged on the outer circumference of the steel plates 7. In this embodiment, a combination of two steel plates 7 and two friction plates 8 is used, i.e., steel plate one, friction plate one, steel plate two, friction plate two arrangement. The remaining components of the clutch plate, such as a pressure plate, release bearing, and return spring (not shown in the figure), are located after the friction plate two. Inside the clutch hub 1, at each gear groove, there are also oil guide ring grooves 6, which are used to pass lubricating oil, improving transmission smoothness while cooling and reducing wear. A speed sensor 5 is installed on the outside of the clutch hub 1, which is used to more timely understand the wear of the gear grooves by detecting the smoothness of gear shifting, and reduce the losses caused by excessive wear of the gear grooves.

[0019] In actual use, when shifting gears is required, the transmission device pushes the clutch hub 1 to engage with the clutch disc. At this time, the main tooth groove 3 meshes with the external tooth 9. When the speed sensor 5 data exceeds the set value after a long period of use, it means that the wear of the main tooth groove 3 has exceeded the limit. At this time, it is not necessary to replace the entire clutch hub 1. Instead, it is only necessary to disassemble it and rotate it at a certain angle, and then use the spare tooth groove 4 to mesh with the external tooth 9 to continue the subsequent work. Depending on the actual situation, more than one spare tooth groove 4 can also be opened. This can greatly improve the service life of each clutch hub 1, save the cost of parts replacement, save a lot of maintenance time, and improve the overall efficiency of the machine.

[0020] Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A gearbox clutch arrangement, characterised in that: The clutch hub (1) and the clutch plate with external teeth (9), the clutch hub (1) has a spline slot (2) in the middle for sleeving on the transmission shaft, the clutch hub (1) has a circle of main tooth slots (3) matched with the external teeth (9) in the circumferential direction, and at least a circle of standby tooth slots (4) identical with the main tooth slots (3) are equidistantly arranged in the gap.

2. A gearbox clutch arrangement according to claim 1, characterised in that: The clutch plate comprises alternately arranged steel sheets (7) and friction sheets (8), and the external teeth (9) are arranged on the outer circumferences of the steel sheets (7).

3. A gearbox clutch arrangement according to claim 2, wherein: The steel sheets (7) and the friction sheets (8) are two pieces respectively.

4. A gearbox clutch arrangement according to claim 1, 2 or 3, characterised in that: The clutch hub (1) is provided with a speed sensor (5) on the outside.

5. A gearbox clutch arrangement according to claim 1, 2 or 3, characterised in that: The clutch hub (1) is provided with an oil guide ring slot (6) in the inside.

6. A gearbox clutch arrangement according to claim 1, 2 or 3, characterised in that: The number of teeth of the main tooth slots (3) and each circle of the standby tooth slots (4) is thirty.

7. A gearbox clutch arrangement according to claim 6, wherein: The tooth root fillet radius of the main tooth slots (3) and the standby tooth slots (4) is 1-1.5 mm.

8. A gearbox clutch arrangement according to claim 7, characterised in that: The tooth root fillet radius of the main tooth slots (3) and the standby tooth slots (4) is 1.2 mm.

9. The gearbox clutch arrangement of claim 1, wherein: The clutch hub (1) is made of SAE4140 alloy steel.

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