Gear box structure of feeder

Abstract

The utility model discloses a gear box structure of a feeder. The gear box structure is composed of an input shaft assembly, a box body assembly and an output shaft assembly. The input shaft assembly is composed of an input shaft, an input shaft sleeve, a driving wheel, a bearing a and a bearing b, and the box body assembly is composed of a wave spring a, a lip-shaped sealing ring a, an O-shaped sealing ring, a box cover, a side end cover, a wave spring b, a lip-shaped sealing ring b, a lip-shaped sealing ring c, an upper end cover and a box body. The output shaft assembly is composed of a fastening bolt, a bearing c, an output shaft sleeve, a driven wheel, a bearing d, a fastening nut, a feeding screw and an output shaft. The problems that due to part machining errors, the driving wheel cannot be fixed or the bearings a and the bearings b bear too large axial force, the bearings are damaged, and relative sliding friction occurs among the input shaft sleeve, the driving wheel, the bearings a and the bearings b are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of feeders, in particular to a gear box structure of a feeder. Background Art

[0002] In actual applications, feeder gearboxes mostly use ordinary double-set bearing rigid link structures. During the installation process, the machining accuracy of parts cannot be guaranteed, and the bearings and gears are prone to misalignment. Under long-term working conditions, the bearings and gears are prone to movement, which can easily cause equipment damage and increase equipment maintenance costs. Utility Model Content

[0003] In order to solve the problems of misalignment of bearings and gears and movement during operation of the gear box of the prior art feeder during installation and use, the utility model provides a gear box structure of the feeder.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A gearbox structure for a feeder, consisting of an input shaft assembly, a box assembly and an output shaft assembly; the input shaft assembly consists of an input shaft, an input shaft sleeve, a driving wheel, a bearing a and a bearing b; the box assembly consists of a wave spring a, a lip seal a, an O-ring, a box cover, a side end cover, a wave spring b, a lip seal b, a lip seal c, an upper end cover and a box; the output shaft assembly consists of a fastening bolt, a bearing c, an output shaft sleeve, a driven wheel, a bearing d, a fastening nut, a feed screw and an output shaft.

[0006] Preferably, the head end of the input shaft is connected to the external motor through a flexible coupling, the bearing a and the input shaft are installed with a transition fit, the driving wheel and the input shaft are installed with a flat key, the input shaft and the driving wheel are installed with a transition fit, the input shaft sleeve and the input shaft are installed with a transition fit, and the bearing b and the input shaft are installed with a transition fit.

[0007] Preferably, the head end of the output shaft is connected to the feed screw by a mechanical snap, the bearing c and the output shaft are installed with a transition fit, the bearing d and the output shaft are installed with a transition fit, the driven wheel and the output shaft are installed with a flat key, the output shaft and the driven wheel are installed with a transition fit, the output sleeve and the output shaft are installed with a transition fit, the fastening bolt and the output shaft are installed with threads, and the fastening nut and the output shaft are installed with threads.

[0008] Preferably, the box body and the wave spring a, the box cover, the side end cover, the wave spring b, and the upper end cover are all clearance fits; the box body and the lip sealing ring a, the lip sealing ring b, and the lip sealing ring c are all interference fits; the O-ring is placed in the groove of the box body, and the O-ring will be compressed when the box cover is installed to perform a sealing function. The box body and the box cover, the side end cover, and the upper end cover are all connected by bolts.

[0009] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model prevents the problems of the driving wheel being unable to be fixed due to parts processing errors, bearing a and bearing b being subjected to excessive axial force causing bearing damage, and relative sliding friction between the input shaft sleeve, the driving wheel, the bearing a and the bearing b; the problem of movement when the bearing and the gear are misaligned during operation is solved by the compression amount of the wave spring a and the wave spring b, and the sliding problem between the bearing, the shaft sleeve and the gear box is solved by tightening the bolts and the nuts. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the main structure of an embodiment of the utility model;

[0011] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure of AA;

[0012] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure of the middle BB;

[0013] Figure 4 for Figure 1 Schematic diagram of the cross-sectional structure of CC.

[0014] In the figure: 1. input shaft assembly, 2. housing assembly, 3. output shaft assembly, 4. input shaft, 5. input shaft sleeve, 6. driving wheel, 7. bearing a, 8. wave spring a, 9. lip seal a, 10. bearing b, 11. O-ring, 12. housing cover, 13. side end cover, 14. fastening bolt, 15. wave spring b, 16. bearing c, 17. output shaft sleeve, 18. driven wheel, 19. bearing d, 20. fastening nut, 21. lip seal b, 22. lip seal c, 23. feed screw, 24. output shaft, 25. upper end cover, 26. housing. DETAILED DESCRIPTION

[0015] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "vertical", "horizontal", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying 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.

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0017] like Figures 1 to 4 As shown, the embodiment of the utility model consists of three parts: an input shaft assembly 1, a housing assembly 2 and an output shaft assembly 3; the input shaft assembly 1 consists of an input shaft 4, an input shaft sleeve 5, a driving wheel 6, a bearing a7 and a bearing b10; the housing assembly 2 consists of a wave spring a8, a lip seal a9, an O-ring 11, a housing cover 12, a side end cover 13, a wave spring b15, a lip seal b21, a lip seal 22c, an upper end cover 25 and a housing 26; the output shaft assembly 3 consists of a fastening bolt 14, a bearing c16, an output shaft sleeve 17, a driven wheel 18, a bearing d19, a fastening nut 20, a feed screw 23 and an output shaft 24.

[0018] Input shaft 4 press Figure 2 Install the input shaft sleeve 5, driving wheel 6, bearing a7 in sequence. The bearing b10 is installed on the input shaft 4 and then on the box 26 according to the above structural composition description, and the contact surface between the box 26 and the bearing b10 is taken as the reference surface a, the flatness of which should not exceed 0.02mm, and the verticality between the axis of the input shaft 4 and the reference surface a should not exceed 0.01mm;

[0019] The wave spring a8 is installed on the box cover 12. When the box cover 12 is installed, the end face of the bearing a7 contacts and is compressed with the wave spring a8, so that the input shaft 4, the input shaft sleeve 5, the driving wheel 6, the bearing a7, the bearing b10, the box cover 12, and the box body 26 are tightly fitted and locked, thereby preventing the driving wheel 6 from being unable to be fixed due to part processing errors, or the bearing a7 and the bearing b10 from being damaged due to excessive axial force, and the input shaft sleeve 5, the driving wheel 6, the bearing a7, and the bearing b10 from having relative sliding friction.

[0020] The output shaft 24 is first installed with the driven wheel 18 through a flat key, and then the output sleeve 17 is installed. One end of the output sleeve 17 contacts the driven wheel 18, and the other end contacts the bearing c16. The fastening bolt 14 is installed through the threaded hole of the output shaft 24, and its end face contacts the bearing c16 but does not contact the output shaft 24. The pre-tightening force of the fastening bolt 14 makes the fastening bolt 14, the bearing c16, the output sleeve 17, the driven wheel 18, and the output shaft 24 form a whole; the bearing d19 and the output shaft 24 are transitionally matched, and one end of the bearing d19 contacts the output shaft 24. The other end of the output shaft 24 contacts the fastening nut 20, and the fastening nut 20 applies a pre-tightening force to the bearing d19 through the external thread of the output shaft 24, so that the bearing d19, the fastening nut 20, and the output shaft 24 are a whole, and there will be no relative sliding during the feeding process; the head end of the output shaft 24 is connected to the feeding screw 23 through a mechanical snap, so that the fastening bolt 14, the bearing c16, the output shaft sleeve 17, the driven wheel 18, the bearing d19, the fastening nut 20, the feeding screw 23, and the output shaft 24 are a whole.

[0021] When the feeder gearbox is working, the input shaft 4 will rotate due to the force provided by the motor, and the input shaft 4 will drive the driving wheel 6 to rotate. The driving wheel 6 drives the pinion to rotate by meshing with the driven wheel 18, and the driven wheel 18 drives the output shaft 24 and then drives the feeding screw 23 to rotate, so as to achieve the purpose of feeding. The problem of movement of bearings and gears during misalignment is solved by the compression of wave spring a8 and wave spring b15, and the sliding problem between bearings, bushings and gear boxes is solved by tightening bolts 14 and tightening nuts 20.

[0022] From the direction of the input shaft 4, the input shaft sleeve 5, and the driving wheel 6, the motor rotates clockwise, the input shaft 4 and the driving wheel 6 rotate clockwise, and then drive the driven wheel 18 and the output shaft 24 to rotate counterclockwise, and then drive the feeding screw 23 to rotate counterclockwise, so that the material is transported directly to the discharge port; wherein the fastening bolt 14 is a right-handed thread, the threaded hole of the output shaft 24 is a right-handed thread, the fastening nut 20 is a left-handed thread, and the external thread of the output shaft 24 is a left-handed thread. When the output shaft 24 rotates counterclockwise, the fastening bolt 14 and the fastening nut 20 increase the pre-tightening force of the parts between them due to inertia, and it is less likely to cause misalignment of the bearings and gears, and relative sliding during movement during operation.

[0023] The better the machining accuracy of the reference surface a and the input shaft and output shaft, the more significant the effect will be.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gearbox structure of a feeder, consisting of an input shaft assembly, a box assembly and an output shaft assembly; characterized in that: The input shaft assembly is composed of an input shaft, an input shaft sleeve, a driving wheel, a bearing a and a bearing b; the box assembly is composed of a wave spring a, a lip seal a, an O-ring, a box cover, a side end cover, a wave spring b, a lip seal b, a lip seal c, an upper end cover and a box; the output shaft assembly is composed of a fastening bolt, a bearing c, an output shaft sleeve, a driven wheel, a bearing d, a fastening nut, a feed screw and an output shaft; The head end of the input shaft is connected to the external motor through a flexible coupling, the bearing a is installed with the input shaft in a transition fit, the driving wheel is installed with the input shaft through a flat key, the input shaft and the driving wheel are installed in a transition fit, the input shaft sleeve is installed in a transition fit, and the bearing b is installed in a transition fit with the input shaft; The head end of the output shaft is connected to the feed screw by a mechanical buckle, the bearing c is installed with the output shaft in a transition fit, the bearing d is installed with the output shaft in a transition fit, the driven wheel is installed with the output shaft by a flat key, the output shaft and the driven wheel are installed in a transition fit, the output sleeve is installed in a transition fit, the fastening bolt is installed with the output shaft by a thread, and the fastening nut is installed with the output shaft by a thread; The box body and the wave spring a, box cover, side end cover, wave spring b, and upper end cover are all clearance fits; the box body and the lip seal ring a, lip seal ring b, and lip seal ring c are all interference fits; the O-ring is placed in the groove of the box body, and the O-ring will be compressed when the box cover is installed to play a sealing role. The box body and the box cover, side end cover, and upper end cover are all connected by bolts.

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