Speed reducer for conical double screws

Abstract

The utility model relates to the technical field of speed reducers, and discloses a conical double-screw speed reducer which comprises a gear box, the front face of the gear box is rotationally connected with two sets of symmetrically-arranged output shafts, the side face of the gear box is rotationally connected with a set of input shafts, and the inner wall of the gear box is fixedly connected with two sets of symmetrically-arranged installation bases. Rotating seats are rotationally connected in the mounting seat, a mounting shaft is fixedly connected between the rotating seats, two sets of symmetrically arranged first bevel gears are fixedly connected to the mounting shaft, and a second bevel gear is fixedly connected to the end, arranged in the gearbox, of the output shaft; staggered driving between the input shaft and the driving shaft is achieved through the arrangement of the inner gear ring and the rotary driving gear, meanwhile, speed reduction driving is achieved, meanwhile, the transmission ratio of equipment is adjusted, and therefore the output rotating speed of the equipment is adjusted, and the service life of the equipment is prolonged. The structure is stable, the reliability is high, and the disassembly is simple and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of speed reducers, in particular to a speed reducer for a conical twin-screw. Background Art

[0002] At present, most plastic extrusion granulators in the existing technology are of counter-rotating twin-screw type, because the twin-screw plastic extrusion granulator has the advantages of high plastic granulation capacity, good plasticizing effect and uniform mixing.

[0003] However, the drive device of the twin-screw plastic extrusion granulator in the prior art has a complex structure, poor operational reliability, is difficult to disassemble, and is difficult to maintain. Summary of the Invention

[0004] The purpose of the present utility model is to provide a conical twin-screw reducer to solve the problems raised in the above background technology.

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

[0006] A conical twin-screw reducer comprises a gearbox, wherein the front of the gearbox is rotatably connected to two sets of symmetrically arranged output shafts, the side of the gearbox is rotatably connected to a set of input shafts, the inner wall of the gearbox is fixedly connected to two sets of symmetrically arranged mounting seats, the mounting seats are rotatably connected to a rotating seat, a mounting shaft is fixedly connected between the rotating seats, the mounting shafts are fixedly connected to two sets of symmetrically arranged first bevel gears, one end of the output shaft is arranged in the gearbox and is fixedly connected to a second bevel gear, the two sets of second bevel gears are respectively meshed with the two sets of first bevel gears, and the number of teeth of the second bevel gears is less than the number of teeth of the first bevel gears;

[0007] The mounting shaft is fixedly connected to a reduction driving gear, and a connecting shaft is rotatably connected to one side of an inner wall of the gear box, and the connecting shaft is fixedly connected to a rotating frame, and the rotating frame is rotatably connected to three sets of rotating shafts, and the three sets of rotating shafts are respectively fixedly connected to a first reduction gear, a second reduction gear, and a third reduction gear, and the driving shaft is rotatably connected to the driving shaft, and the driving shaft is fixedly connected to a synchronous driving gear, and the synchronous driving gear and the first reduction gear, the second reduction gear, and the third reduction gear are all meshed with each other, and the first reduction gear, the second reduction gear, and the third reduction gear can all mesh with the reduction driving gear, and the number of teeth of the first reduction gear, the second reduction gear, and the third reduction gear decreases in sequence, and the number of teeth of the first reduction gear, the second reduction gear, and the third reduction gear are all less than the number of teeth of the reduction driving gear;

[0008] The drive shaft passes through the rotating frame and is fixedly connected to the rotating drive gear. The input shaft is arranged in the gear box and is fixedly connected to a mounting frame at one end. The mounting frame is fixedly connected to an inner ring gear. The inner ring gear and the rotating drive gear are meshed with each other. The axes of the connecting shaft and the input shaft coincide with each other.

[0009] As a further solution of the present invention: a control motor is fixedly connected to the outer wall of the gear box, and the control motor is fixedly connected to the connecting shaft.

[0010] As a further solution of the present invention: the two groups of output shafts are connected to the input ends of the two groups of conical twin-screws.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention realizes the staggered drive between the input shaft and the drive shaft through the setting of the inner ring gear and the rotating drive gear, and at the same time, through the setting of three groups of reduction gears with successively decreasing numbers of teeth, while realizing the reduction drive, the transmission ratio of the equipment is adjusted, thereby realizing the adjustment of the output speed of the equipment, and the present invention has a stable structure, high reliability, simple and convenient disassembly, and improves the practicality of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic structural diagram of a conical twin-screw reducer in the utility model.

[0013] Figure 2 This is a schematic structural diagram of a conical twin-screw reducer in the utility model.

[0014] Figure 3 This is a schematic structural diagram of a conical twin-screw reducer in the utility model.

[0015] Figure 4 This is a schematic structural diagram of a conical twin-screw reducer in the utility model.

[0016] Figure 5 This is a schematic diagram of the structure of a conical twin-screw reducer in this utility model.

[0017] In the figure: 1-gearbox, 2-mounting seat, 3-rotating seat, 4-mounting shaft, 5-output shaft, 6-first bevel gear, 7-second bevel gear, 8-input shaft, 9-connecting shaft, 10-rotating frame, 11-rotating shaft, 12-first reduction gear, 13-second reduction gear, 14-third reduction gear, 15-drive shaft, 16-synchronous drive gear, 17-mounting frame, 18-inner ring gear, 19-rotation drive gear, 20-reduction drive gear, 21-control motor. DETAILED DESCRIPTION

[0018] 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 embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] See Figures 1 to 5 In the embodiment of the present utility model, a conical twin-screw reducer includes a gear box 1, the front of the gear box 1 is rotatably connected to two groups of symmetrically arranged output shafts 5, the side of the gear box 1 is rotatably connected to a group of input shafts 8, two groups of symmetrically arranged mounting seats 2 are fixedly connected on the inner wall of the gear box 1, a rotating seat 3 is rotatably connected inside the mounting seat 2, a mounting shaft 4 is fixedly connected between the rotating seats 3, and two groups of symmetrically arranged first bevel gears 6 are fixedly connected to the mounting shaft 4. The output shaft 5 is fixedly connected to one end of the gear box 1 with a second bevel gear 7. The two groups of second bevel gears 7 are respectively meshed with the two groups of first bevel gears 6, and the number of teeth of the second bevel gear 7 is less than the number of teeth of the first bevel gear 6.

[0020] The mounting shaft 4 is fixedly connected to a reduction drive gear 20, and a connecting shaft 9 is rotatably connected to one side of the inner wall of the gear box 1. The connecting shaft 9 is fixedly connected to a rotating frame 10, and the rotating frame 10 is rotatably connected to three groups of rotating shafts 11. The three groups of rotating shafts 11 are respectively fixedly connected to the first reduction gear 12, the second reduction gear 13, and the third reduction gear 14. The rotating frame 10 is rotatably connected to a drive shaft 15, and the drive shaft 15 is fixedly connected to a synchronous drive gear 16. The synchronous drive gear 16 is connected to the first reduction gear 12 and the second reduction gear 1 3. The third reduction gear 14 is meshed with each other, and the first reduction gear 12, the second reduction gear 13, and the third reduction gear 14 can all be meshed with the reduction drive gear 20. The number of teeth of the first reduction gear 12, the second reduction gear 13, and the third reduction gear 14 decreases in sequence, and the number of teeth of the first reduction gear 12, the second reduction gear 13, and the third reduction gear 14 is less than the number of teeth of the reduction drive gear 20. A control motor 21 is fixedly connected to the outer wall of the gear box 1, and the control motor 21 is fixedly connected to the connecting shaft 9;

[0021] The drive shaft 15 passes through the rotating frame 10 and is fixedly connected to the rotary drive gear 19. The input shaft 8 is arranged in the gear box 1 and is fixedly connected to the mounting frame 17 at one end. The mounting frame 17 is fixedly connected to the inner ring gear 18. The inner ring gear 18 and the rotary drive gear 19 are meshed with each other. The axes of the connecting shaft 9 and the input shaft 8 coincide with each other.

[0022] The utility model first drives the input shaft 8 to rotate through the driving device, and the input shaft 8 drives the inner ring gear 18 to rotate through the mounting bracket 17, and the inner ring gear 18 drives the drive shaft 15 to rotate by mutual engagement with the rotating drive gear 19. In this process, a deceleration is achieved by the difference in the number of teeth between the inner ring gear 18 and the rotating drive gear 19. At the same time, the drive shaft 15 drives the synchronous drive gear 16 to rotate, and the synchronous drive gear 16 drives the first reduction gear 12, the second reduction gear 13, and the third reduction gear 14 to rotate synchronously by mutual engagement with the first reduction gear 12, the second reduction gear 13, and the third reduction gear 14. The first reduction gear 12, the second reduction gear 13, and the third reduction gear 14 drive the reduction drive gear 20 to rotate by mutual engagement with the reduction drive gear 20, and in this process, the first reduction gear 12, the second reduction gear 13, and the third reduction gear 14 are engaged with each other. The setting of the number of teeth of each of them is smaller than the number of teeth of the reduction drive gear 20 to realize secondary deceleration, the reduction drive gear 20 drives the installation shaft 4 to rotate, the installation shaft 4 drives the two sets of first bevel gears 6 to rotate, and the first bevel gear 6 drives the input shaft 8 to rotate through mutual engagement with the second bevel gear 7. At this time, since the number of teeth of the second bevel gear 7 is smaller than the number of teeth of the first bevel gear 6, triple deceleration is achieved, and the utility model can also drive the connecting shaft 9 to rotate by controlling the motor 21, the connecting shaft 9 drives the rotating frame 10 to rotate, and the rotating frame 10 drives the first reduction gear 12, the second reduction gear 13, and the third reduction gear 14 to rotate, thereby rotating the gears between the synchronous drive gear 16 and the reduction drive gear 20. At this time, the number of teeth of the first reduction gear 12, the second reduction gear 13, and the third reduction gear 14 decreases successively, thereby realizing the adjustment of the transmission ratio of the secondary deceleration, thereby realizing the adjustment of the output speed of the equipment.

[0023] In one embodiment of this invention, see Figures 1 to 5 The two sets of output shafts 5 are connected to the input ends of the two sets of conical twin screws. The utility model drives the two sets of conical twin screws to rotate synchronously in opposite directions through the two sets of output shafts 5.

[0024] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from all points of view, the embodiments should be regarded as illustrative and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and range of equivalents of the claims be included in the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A conical twin-screw reducer, characterized in that: The gearbox comprises a gearbox, wherein the front side of the gearbox is rotatably connected to two groups of symmetrically arranged output shafts, the side of the gearbox is rotatably connected to a group of input shafts, the inner wall of the gearbox is fixedly connected to two groups of symmetrically arranged mounting seats, the mounting seats are rotatably connected to a rotating seat, a mounting shaft is fixedly connected between the rotating seats, the mounting shafts are fixedly connected to two groups of symmetrically arranged first bevel gears, one end of the output shaft is fixedly connected to the gearbox, the two groups of second bevel gears are respectively meshed with the two groups of first bevel gears, and the number of teeth of the second bevel gears is less than the number of teeth of the first bevel gears; The mounting shaft is fixedly connected to a reduction driving gear, and a connecting shaft is rotatably connected to one side of an inner wall of the gear box, and the connecting shaft is fixedly connected to a rotating frame, and the rotating frame is rotatably connected to three sets of rotating shafts, and the three sets of rotating shafts are respectively fixedly connected to a first reduction gear, a second reduction gear, and a third reduction gear, and the driving shaft is rotatably connected to the driving shaft, and the driving shaft is fixedly connected to a synchronous driving gear, and the synchronous driving gear and the first reduction gear, the second reduction gear, and the third reduction gear are all meshed with each other, and the first reduction gear, the second reduction gear, and the third reduction gear can all mesh with the reduction driving gear, and the number of teeth of the first reduction gear, the second reduction gear, and the third reduction gear decreases in sequence, and the number of teeth of the first reduction gear, the second reduction gear, and the third reduction gear are all less than the number of teeth of the reduction driving gear; The drive shaft passes through the rotating frame and is fixedly connected to the rotating drive gear. The input shaft is arranged in the gear box and is fixedly connected to a mounting frame at one end. The mounting frame is fixedly connected to an inner ring gear. The inner ring gear and the rotating drive gear are meshed with each other. The axes of the connecting shaft and the input shaft coincide with each other.

2. A conical twin-screw reducer according to claim 1, characterized in that: A control motor is fixedly connected to the outer wall of the gear box, and the control motor is fixedly connected to the connecting shaft.

3. A conical twin-screw reducer according to claim 1, characterized in that: The two groups of output shafts are connected to the input ends of the two groups of conical twin screws.

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