A stepless locking mechanism for output gear shaft

Abstract

The present invention discloses a stepless locking mechanism for an output gear shaft, which is used to connect a rotating shaft and an output gear shaft arranged in a gear box, wherein the tail end of the rotating shaft is located inside the output gear shaft and is adapted to the output gear shaft, and the tail end of the rotating shaft is in a tapered shape with a diameter gradually decreasing from the inside to the outside, and forms a mounting groove with the output gear shaft, wherein a taper sleeve is provided in the mounting groove, and the inner wall of the taper sleeve is engaged with the rotating shaft, and the outer wall of the taper sleeve is engaged with the output gear shaft. The present invention sets the tail end of the rotating shaft into a taper, sets a taper sleeve between the rotating shaft and the output gear shaft, and uses a special taper to connect the rotating shaft and the output gear shaft, thereby ensuring the coaxiality between the rotating shaft and the output gear shaft, realizing installation at any phase angle, and greatly saving installation time.

Description

Technical Field

[0001] The invention relates to the technical field of output gear shaft connection, and in particular to a stepless locking mechanism for an output gear shaft. Background Art

[0002] The side feeder adopts side feeding, and filler materials are added in the material melting section. After the filler materials enter the extruder, they will be wrapped and mixed by the molten materials, avoiding the wear of the screw and barrel, and effectively improving the output and production efficiency. At the same time, when the twin-screw extruder produces materials, a large amount of water and hydrochloric acid solution will be added. At the same time, the waste gas and waste liquids such as dilute hydrochloric acid need to be removed by the side exhaust fan in the later stage to ensure the quality of the materials.

[0003] The side feeder and the side exhaust fan both use a motor to drive a screw or an integrated output shaft to rotate to achieve the above functions, that is, the input end of the input gear shaft of the gear box is connected to the motor output shaft, the gears of the input gear shaft respectively mesh with the gears of the output gear shaft of the gear box, the output gear shaft is connected to the tail end of the screw or the integrated output shaft, and the input gear shaft drives the output gear shaft to rotate in the same direction and speed, thereby driving the screw or the integrated output shaft to rotate.

[0004] In the prior art, the output gear shaft and the screw or the integrated output shaft are generally spline-connected through a spline shaft, but the spline shaft connection requires phase adjustment to ensure the correct meshing of the screw or the integrated output shaft after assembly. When adjusting the phase, it is easy to fail to adjust and the assembly and disassembly must be repeated many times, wasting a lot of time and causing the assembly time to be long. Summary of the invention

[0005] The object of the present invention is to provide a stepless locking mechanism for an output gear shaft to solve the problems mentioned in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides a stepless locking mechanism for an output gear shaft, which is used to connect a rotating shaft and an output gear shaft arranged in a gear box, wherein the tail end of the rotating shaft is located inside the output gear shaft and is adapted to the output gear shaft, and the tail end of the rotating shaft is in a cone shape with a diameter gradually decreasing from the inside to the outside, and forms a mounting groove with the output gear shaft, wherein a tapered sleeve is provided in the mounting groove, and the inner wall of the tapered sleeve is connected to the rotating shaft, and the outer wall of the tapered sleeve is connected to the output gear shaft.

[0007] Furthermore, a locking assembly is provided on the outer side of the rotating shaft, and the locking assembly is used to further pull in and lock the rotating shaft and the output gear shaft.

[0008] Furthermore, the end face of the rotating shaft, the end face of the tapered sleeve and the end face of the output gear shaft are flush, the locking assembly includes a locking plate and a screw, the inner side of the locking plate is fitted with the end face of the output gear shaft, and the threaded end of the screw connects the locking plate and the rotating shaft.

[0009] Furthermore, the locking plate is provided with a receiving groove extending inward from the outer end surface, and the receiving groove is adapted to the head of the screw.

[0010] Furthermore, the output gear shaft includes a sleeve, an output gear, a bearing and a seal. The sleeve is sleeved on the tail end of the rotating shaft and is clamped with the tapered sleeve. The output gear is sleeved on the sleeve. There are multiple bearings, and the multiple bearings are symmetrically arranged at both ends of the output gear, and the end face of the outermost bearing is in contact with the locking plate. The seal is arranged on the inner side of the bearing and is located at the inner end of the gear box. The seal is used to prevent materials from entering the gear box.

[0011] Further, the sealing component includes a sealing seat, a sealing cover plate, an oil sealing cover plate, a sealing gasket and an oil sealing ring. The sealing seat, the sealing cover plate and the oil sealing cover plate are all provided with through holes in the transverse direction. The connection between the rotating shaft and the shaft sleeve is located in the through hole. The sealing cover plate is installed on the inner side of the sealing seat, and the oil sealing cover plate is installed on the outer side of the sealing seat. The sealing gasket is sleeved on the rotating shaft, and the outer ring is adapted to the inner wall of the through hole. The oil sealing ring is sleeved on the shaft sleeve, and the outer ring is adapted to the inner wall of the through hole.

[0012] Furthermore, a distance sleeve is sleeved at the connection between the rotating shaft and the shaft sleeve, and the sealing gasket and the oil seal ring are sleeved on both ends of the distance sleeve respectively.

[0013] Furthermore, output shaft washers are provided between both sides of the output gear and the corresponding bearings, and the bearings include tapered roller bearings and needle roller bearings.

[0014] Furthermore, a side seal is provided between the seal and the innermost bearing, and the side seal includes a side oil seal cover plate and a side oil seal ring which are arranged from the inside to the outside.

[0015] The beneficial effects of the present invention are as follows: the present invention sets the rear end of the rotating shaft into a cone, sets a cone sleeve between the rotating shaft and the output gear shaft, uses a special taper to connect the rotating shaft and the output gear shaft, ensures the coaxiality between the rotating shaft and the output gear shaft, realizes installation at any phase angle, and greatly saves installation time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of an embodiment of the present invention.

[0017] Figure 2 It is a schematic diagram of the cross-sectional structure of an embodiment of the present invention.

[0018] Figure 3 It is a schematic diagram of the local structure of an embodiment of the present invention.

[0019] Figure 4 It is a schematic diagram of a partial explosion structure of an embodiment of the present invention.

[0020] Among them: 1. rotating shaft; 2. gear box; 3. output gear shaft; 4. taper sleeve; 5. locking assembly; 6. distance sleeve.

[0021] 31. Bushing; 32. Output gear; 33. Bearing; 34. Seal; 35. Side seal;

[0022] 51. locking plate; 52. screw; 53. receiving groove;

[0023] 331, tapered roller bearing; 332, needle roller bearing; 341, sealing seat; 342, sealing cover plate; 343, oil seal cover plate; 344, sealing gasket; 345, oil seal ring; 346, output shaft gasket; 351, side oil seal cover plate; 352, side oil seal ring. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiment is only one embodiment of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the present invention.

[0025] In order to make the objectives, technical solutions and advantages of the present application more clear, the present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] In the following description, references to "one embodiment", "an embodiment", "an example", "an example", etc. indicate that the embodiment or example described in this way may include specific features, structures, characteristics, properties, elements or limitations, but not every embodiment or example necessarily includes the specific features, structures, characteristics, properties, elements or limitations. In addition, repeated use of the phrase "according to one embodiment of the present application" may refer to the same embodiment, but does not necessarily refer to the same embodiment.

[0027] like Figure 1-4As shown, the present invention discloses a stepless locking mechanism for an output gear shaft 3, which is used to connect a rotating shaft 1 and an output gear shaft 3 arranged in a gear box 2. The rotating shaft 1 can be a screw or an integrated output shaft. The tail end of the rotating shaft 1 is located inside the output gear shaft 3 and is adapted to the output gear shaft 3. The tail end of the rotating shaft 1 is in a tapered shape with a diameter gradually decreasing from the inside to the outside, and forms a mounting groove with the output gear shaft 3. A tapered sleeve 4 is provided in the mounting groove, and the inner wall of the tapered sleeve 4 is connected to the rotating shaft 1, and the outer wall of the tapered sleeve 4 is connected to the output gear shaft 3.

[0028] In this embodiment, when it is necessary to connect the rotating shaft 1 and the output gear shaft 3, it is only necessary to align the output gear shaft 3 with the rotating shaft 1 and insert it, and then insert the tapered sleeve 4 into the installation groove between the rotating shaft 1 and the output gear shaft 3 until the outer wall of the tapered sleeve 4 is tightly engaged with the inner wall of the output gear shaft 3. It not only provides the necessary connection strength, but also ensures the coaxiality between the rotating shaft 1 and the output gear shaft 3, and realizes installation at any phase angle. By adjusting the matching tightness between the tapered sleeve 4 and the rotating shaft 1 and the output gear shaft 3, the effect of stepless locking can be achieved.

[0029] The present invention sets the rear end of the rotating shaft 1 into a cone, sets a cone sleeve 4 between the rotating shaft 1 and the output gear shaft 3, and uses a special taper to connect the rotating shaft 1 and the output gear shaft 3, thereby ensuring the coaxiality between the rotating shaft 1 and the output gear shaft 3, realizing installation at any phase angle, and greatly saving installation time.

[0030] In one embodiment, a locking assembly 5 is provided on the outside of the rotating shaft 1, and the locking assembly 5 is used to further pull in and lock the rotating shaft 1 and the output gear shaft 3. In the embodiment, the locking assembly 5 can be a fastener in the form of a thread, a pin, a retaining spring, etc., so that the rotating shaft 1 and the output gear shaft 3 can achieve a further locking effect.

[0031] After the rotating shaft 1, the output gear shaft 3 and the taper sleeve 4 are installed, the locking assembly 5 is installed to further ensure the tight connection between the rotating shaft 1 and the output gear shaft 3 to prevent the connection from loosening or failing due to vibration, impact, etc. At the same time, the rigidity and stability of the connection are improved, and the locking assembly 5 can enhance the reliability of the entire mechanical system and reduce downtime and maintenance costs caused by connection failures.

[0032] In one embodiment, the end face of the rotating shaft 1, the end face of the tapered sleeve 4 and the end face of the output gear shaft 3 are flush, and the locking assembly 5 includes a locking plate 51 and a screw 52. The inner side of the locking plate 51 is in contact with the end face of the output gear shaft 3, and the threaded end of the screw 52 connects the locking plate 51 and the rotating shaft 1.

[0033] After the rotating shaft 1, the output gear shaft 3 and the taper sleeve 4 are assembled, the inner side of the locking plate 51 is closely fitted with the end face of the output gear shaft 3, and the locking plate 51 and the rotating shaft 1 are firmly connected together through the threaded end of the screw 52. At the same time, a certain pre-tightening force can be generated between the locking plate 51 and the rotating shaft 1 or the output gear shaft 3. This pre-tightening force helps to eliminate the gap between the components and improve the rigidity and stability of the connection.

[0034] In one embodiment, the locking plate 51 is provided with a receiving groove 53 extending inward from the outer end surface, and the receiving groove 53 is adapted to the head of the screw 52. That is, the head of the screw 52 is received in the receiving groove 53, which reduces the protrusion of the screw 52 on the surface of the locking plate 51. At the same time, during the operation of the mechanical system, this tight fit can prevent the screw 52 from loosening or falling off due to vibration or impact.

[0035] In one embodiment, the output gear shaft 3 includes a sleeve 31, an output gear 32, a bearing 33 and a seal 34. The sleeve 31 is sleeved on the tail end of the rotating shaft 1 and is clamped with the tapered sleeve 4. The output gear 32 is sleeved on the sleeve 31. There are multiple bearings 33. The multiple bearings 33 are symmetrically arranged at both ends of the output gear 32, and the end face of the outermost bearing 33 is in contact with the locking plate 51. The seal 34 is arranged on the inner side of the bearing 33 and is located at the inner end of the gear box 2. The seal 34 is used to prevent materials from entering the gear box 2.

[0036] That is, during installation, the rear end of the rotating shaft 1 is inserted into the sleeve 31, the tapered sleeve 4 is installed between the rotating shaft 1 and the sleeve 31, the rotating shaft 1 and the sleeve 31 are locked, and then the locking plate 51 is fitted to the end surface of the outermost bearing 33, and the rotating shaft 1 and the locking plate 51 are connected together using screws 52.

[0037] In one embodiment, the seal 34 includes a seal seat 341, a seal cover plate 342, an oil seal cover plate 343, a seal gasket 344 and an oil seal ring 345. The seal seat 341, the seal cover plate 342 and the oil seal cover plate 343 are all provided with through holes in the transverse direction. The connection between the rotating shaft 1 and the shaft sleeve 31 is located in the through hole. The seal cover plate 342 is installed on the inner side of the seal seat 341 to ensure that external fluid and materials will not leak through the gap between the seal seat 341 and the rotating shaft 1. The oil seal cover plate 343 is installed on the outer side of the seal seat 341 to effectively prevent the sealing oil from leaking into the output gear 32 area. The seal gasket 344 is sleeved on the rotating shaft 1, and the outer ring is adapted to the inner wall of the through hole. The oil seal ring 345 is sleeved on the shaft sleeve 31, and the outer ring is adapted to the inner wall of the through hole to provide an additional sealing effect. In this embodiment, the seal gasket 344 is a copper gasket, the number of which is seven, and the number of the oil seal ring 345 is two.

[0038] In one embodiment, a distance sleeve 6 is sleeved at the connection between the rotating shaft 1 and the sleeve 31, and a sealing gasket 344 and an oil seal ring 345 are sleeved at both ends of the distance sleeve 6. In this embodiment, the inner end of the sleeve 31 is stepped, and the outer diameter of the inner end is smaller than the inner outer diameter, that is, the distance sleeve 6 can be sleeved on the sleeve 31, and the maximum outer diameter of the distance sleeve 6 is the same as the maximum outer diameter of the sleeve 31. The sleeve 31 end of the distance sleeve 6 is located in the gear box 2, and the other end is located outside the gear box 2. The distance sleeve 6 provides a fixed installation position for the seal 34, ensuring that they can be correctly installed between the rotating shaft 1, the sleeve 31 and the gear box 2, and is convenient for positioning when installing the rotating shaft 1.

[0039] In one embodiment, output shaft washers 346 are provided between both sides of the output gear 32 and the corresponding bearings 33, providing an accurate installation position for the installation of the output gear 32. By selecting a suitable washer thickness, the gap between the output gear 32 and the bearing 33 can be adjusted to ensure the matching accuracy between them. At the same time, the stress generated by the bearing 33 during operation can be dispersed to extend the service life of the bearing 33 and the output shaft. The bearing 33 includes a tapered roller bearing 331 and a needle roller bearing 332. The combined use of the tapered roller bearing 331 and the needle roller bearing 332 enables the gearbox 2 to adapt to different working conditions and load requirements.

[0040] In one embodiment, a side seal 35 is provided between the seal 34 and the innermost bearing 33, and the side seal 35 includes a side oil seal cover plate 351 and a side oil seal ring 352 arranged from the inside to the outside. That is, the side oil seal cover plate 351 corresponds to the oil seal cover plate 343, and the number of the side oil seal rings 352 is two, corresponding to the innermost bearing 33, to further improve the sealing effect.

[0041] The design ideas of the present invention are as follows:

[0042] When in use, first assemble the distance sleeve 6 and the output gear shaft 3 in the gear box 2, at which point one end of the distance sleeve 6 is located outside the gear box 2, and then align the rotating shaft 1 with the distance sleeve 6 and insert it until it cannot be moved. Then insert the tapered sleeve 4 into the installation groove formed by the rotating shaft 1 and the output gear shaft 3 until the outer wall of the tapered sleeve 4 is tightly engaged with the inner wall of the output gear shaft 3, thereby achieving the locking effect of the rotating shaft 1 and the output gear shaft 3. Finally, fit the locking plate 51 to the end face of the outermost bearing 33, and use the screw 52 to connect the rotating shaft 1 and the locking plate 51 together to further lock the rotating shaft 1 and the output gear shaft 3. This structure can replace the traditional spline connection structure, ensure the coaxiality between the rotating shaft 1 and the output gear shaft 3, realize the installation of any phase angle, make the adjustment of the phase easy and comfortable, and at the same time, achieve the effect of stepless locking.

[0043] The present invention sets the rear end of the rotating shaft 1 into a cone, sets a cone sleeve 4 between the rotating shaft 1 and the output gear shaft 3, and uses a special taper to connect the rotating shaft 1 and the output gear shaft 3, thereby ensuring the coaxiality between the rotating shaft 1 and the output gear shaft 3, realizing installation at any phase angle, and greatly saving installation time.

[0044] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A stepless locking mechanism for an output gear shaft, used to connect a rotating shaft and an output gear shaft arranged in a gear box, characterized in that: The tail end of the rotating shaft is located inside the output gear shaft and is adapted to the output gear shaft. The tail end of the rotating shaft is in a cone shape with a diameter gradually decreasing from the inside to the outside and forms a mounting groove with the output gear shaft. A tapered sleeve is provided in the mounting groove, the inner wall of the tapered sleeve is connected to the rotating shaft, and the outer wall of the tapered sleeve is connected to the output gear shaft.

2. A stepless locking mechanism for an output gear shaft according to claim 1, characterized in that: A locking assembly is provided on the outer side of the rotating shaft, and the locking assembly is used to further pull in and lock the rotating shaft and the output gear shaft.

3. A stepless locking mechanism for an output gear shaft according to claim 2, characterized in that: The end face of the rotating shaft, the end face of the tapered sleeve and the end face of the output gear shaft are flush, and the locking assembly includes a locking plate and a screw. The inner side of the locking plate fits with the end face of the output gear shaft, and the threaded end of the screw connects the locking plate and the rotating shaft.

4. A stepless locking mechanism for an output gear shaft according to claim 3, characterized in that: The locking plate is provided with a receiving groove extending inward from the outer end surface, and the receiving groove is adapted to the head of the screw.

5. A stepless locking mechanism for an output gear shaft according to claim 2, characterized in that: The output gear shaft includes a sleeve, an output gear, a bearing and a seal. The sleeve is sleeved on the tail end of the rotating shaft and is clamped with the tapered sleeve. The output gear is sleeved on the sleeve. There are multiple bearings, which are symmetrically arranged at both ends of the output gear, and the end face of the outermost bearing is in contact with the locking plate. The seal is arranged on the inner side of the bearing and is located at the inner end of the gear box. The seal is used to prevent materials from entering the gear box.

6. A stepless locking mechanism for an output gear shaft according to claim 5, characterized in that: The sealing member comprises a sealing seat, a sealing cover plate, an oil sealing cover plate, a sealing gasket and an oil sealing ring. The sealing seat, the sealing cover plate and the oil sealing cover plate are all provided with through holes in a transverse direction. The connection between the rotating shaft and the shaft sleeve is located in the through hole. The sealing cover plate is installed on the inner side of the sealing seat, and the oil sealing cover plate is installed on the outer side of the sealing seat. The sealing gasket is sleeved on the rotating shaft, and the outer ring is adapted to the inner wall of the through hole. The oil sealing ring is sleeved on the shaft sleeve, and the outer ring is adapted to the inner wall of the through hole.

7. A stepless locking mechanism for an output gear shaft according to claim 6, characterized in that: A distance sleeve is sleeved at the connection between the rotating shaft and the shaft sleeve, and the sealing gasket and the oil seal ring are sleeved on both ends of the distance sleeve respectively.

8. The stepless locking mechanism for the output gear shaft according to claim 5, characterized in that: Output shaft washers are arranged between the two sides of the output gear and the corresponding bearings, and the bearings include tapered roller bearings and needle roller bearings.

9. A stepless locking mechanism for an output gear shaft according to claim 6, characterized in that: A side seal is provided between the seal and the innermost bearing, and the side seal comprises a side oil seal cover plate and a side oil seal ring which are arranged from the inside to the outside.

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