Single planetary transmission device and chopper

Abstract

The utility model relates to a single planetary transmission device and a chopper, the single planetary transmission device is driven by a rotating mechanism, and the single planetary transmission device comprises a planetary reversing mechanism and a driven transmission mechanism; the planet reversing mechanism comprises a center wheel connected with the rotating mechanism, a first planet wheel meshed with the center wheel and a lower planet carrier supporting the first planet wheel. Driving teeth are arranged on the outer side of the lower planet carrier, and a reverse connection hole is further formed in the lower planet carrier. The driven transmission mechanism comprises a first transmission gear meshed with the driving teeth, a second transmission gear meshed with the first transmission gear and a driven connecting sleeve meshed with the second transmission gear; and a driven connecting hole is formed in the driven connecting sleeve. Bidirectional torque is output through the reverse connection hole and the driven connection hole. One-way rotation of the rotating mechanism is converted into two-way rotation, and the requirement for rotation in multiple directions is met.

Description

Technical Field

[0001] The utility model relates to the technical field of gear transmission, in particular to a single planetary transmission device and a shredder. Background Art

[0002] Rotation is the movement of an object along a fixed axis or shaft. This type of rotation is widely used in various technical fields such as mechanical transmission, mixing and stirring, as well as processing and manufacturing.

[0003] Existing rotary drive devices can output unidirectional rotary motion in a high speed range. However, unidirectional rotary motion has many limitations. Its rotational freedom is not high and it is difficult to adapt to the needs of multi-directional rotation. For example, when stirring and chopping, the blade rotates in one direction, and the material is stirred and chopped in fewer directions, which easily causes uneven mixing and chopping problems and increases the time cost of stirring and chopping.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a single planetary transmission device and a shredder to achieve bidirectional rotation.

[0006] The technical solution of the utility model is as follows:

[0007] A single planetary transmission device is driven by a rotating mechanism, and the single planetary transmission device includes a planetary reversal mechanism and a driven transmission mechanism; the planetary reversal mechanism includes a central wheel connected to the rotating mechanism, a first planetary wheel meshing with the central wheel, and a lower planetary carrier supporting the first planetary wheel; the outer side of the lower planetary carrier is provided with driving teeth, and the lower planetary carrier is also provided with a reversal connection hole; the driven transmission mechanism includes a first transmission gear meshing with the driving teeth, a second transmission gear meshing with the first transmission gear, and a driven connecting sleeve meshing with the second transmission gear; the driven connecting sleeve is provided with a driven connecting hole.

[0008] A further technical solution is that the reversing connection hole and the driven connection hole are coaxially arranged and connected, and the aperture of the reversing connection hole is smaller than the aperture of the driven connection hole.

[0009] A further technical solution is that the planetary reversal mechanism also includes an upper planet carrier, the first planetary gear is arranged between the upper planet carrier and the lower planet carrier, and a connecting rod is also arranged between the upper planet carrier and the lower planet carrier.

[0010] A further technical solution is that the first planetary gear is a double gear.

[0011] A further technical solution is that a gear ring is sleeved on the planetary reversal mechanism, and the inner side of the gear ring meshes with the first planetary gear.

[0012] A further technical solution is that a first extension portion is provided on the inner side of the ring gear, and the first transmission gear and the second transmission gear are provided on the first extension portion.

[0013] A further technical solution is that a cover plate is provided between the rotating mechanism and the planetary reversal mechanism.

[0014] A further technical solution is that a bottom plate is arranged at one end of the first transmission gear and the second transmission gear away from the first planetary gear.

[0015] A shredder comprises an upper knife assembly, a lower knife assembly and a single planetary transmission device; the upper knife assembly and the lower knife assembly are respectively connected to a reversing connection hole and a driven connection hole of the single planetary transmission device.

[0016] A further technical solution is that it also includes a tool shaft connected to the reversing connection hole and a tool sleeve connected to the driven connection hole; the upper knife assembly and the lower knife assembly are respectively arranged on the tool shaft and the tool sleeve.

[0017] The beneficial technical effects of the utility model are as follows:

[0018] (1) The single planetary transmission device in the utility model is connected to the planetary reversing mechanism through a driven transmission mechanism. The planetary reversing mechanism outputs a torque in the opposite direction to the torque of the rotating mechanism through the reversing connection hole. The driven transmission mechanism outputs a torque in the same direction as the torque of the rotating mechanism through the driven connection hole. The driven transmission mechanism has a simple structure and low cost. It converts the unidirectional rotation of the rotating mechanism into a simultaneous bidirectional rotation to meet the rotation requirements in multiple directions.

[0019] (2) Furthermore, the reverse connection hole and the driven connection hole are coaxial and connected, and the diameter of the reverse connection hole is smaller than the diameter of the driven connection hole, so as to facilitate the double-layer rotation structure of connecting the tool shaft and the tool sleeve to realize coaxial bidirectional rotation.

[0020] (3) The shredder in the utility model is provided with an upper knife assembly and a lower knife assembly, and the upper knife assembly and the lower knife assembly are respectively connected to the reversing connection hole and the driven connection hole of the single planetary transmission device to receive the torque in the reverse direction to realize the reverse rotation of the upper knife assembly and the lower knife assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1A three-dimensional structural schematic diagram of a single planetary transmission device provided by an embodiment of the utility model is shown with the gear ring and the bottom plate hidden.

[0022] Figure 2 A cross-sectional structural schematic diagram of a single planetary transmission device provided in an embodiment of the utility model is shown.

[0023] Figure 3 The exploded structure diagram of the shredder provided by the embodiment of the utility model is shown.

[0024] Figure 4 The schematic diagram of the structure of the cutter assembly in the shredder provided by the embodiment of the utility model is shown.

[0025] Markings in the accompanying drawings:

[0026] 1. Rotating mechanism; 2. Cover plate; 3. Ring gear; 31. First extension part; 4. Planetary reversal mechanism; 41. Center wheel; 42. First planetary wheel; 43. Upper planetary carrier; 44. Connecting rod; 45. Lower planetary carrier; 46. Driving tooth; 47. Reversal connecting hole; 5. Driven transmission mechanism; 51. First transmission gear; 52. Second transmission gear; 53. Driven connecting sleeve; 54. Driven connecting hole; 6. Bottom plate; 7. Rotating shaft; 8. Upper knife assembly; 81. Tool shaft sleeve; 9. Lower knife assembly; 91. Tool rotating shaft. DETAILED DESCRIPTION

[0027] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, please refer to the attached drawings. It should be noted that the structures, proportions, sizes, etc. illustrated in the attached drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no technical substantive significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effect and purpose that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model.

[0028] In the description of the present invention, the orientations or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "axial", "radial", and "circumferential" 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. They 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 should not be understood as a limitation on the present invention.

[0029] The present invention defines forward and reverse directions. The forward direction refers to the direction of torque or rotation, which is the same as the direction of torque or rotation output by the rotating mechanism 1. The reverse direction refers to the direction of torque or rotation, which is opposite to the direction of torque or rotation output by the rotating mechanism 1.

[0030] Embodiment 1

[0031] Figure 1 A three-dimensional structural schematic diagram of a single planetary transmission device provided by an embodiment of the utility model is shown with the gear ring and the bottom plate hidden. Figure 2 The cross-sectional structure diagram of the single planetary transmission device provided by the embodiment of the utility model is shown. Figure 1 and Figure 2 , a single planetary transmission device is driven by a rotating mechanism 1, and the single planetary transmission device includes a planetary reversing mechanism 4 and a driven transmission mechanism 5. The rotating mechanism 1 can be a mechanism for outputting a rotating torque known in various types of technology, such as a motor.

[0032] The planetary reversal mechanism 4 includes a center wheel 41 connected to the rotating mechanism 1, a first planetary wheel 42 meshing with the center wheel 41, and a lower planetary carrier 45 supporting the first planetary wheel 42. The number of the first planetary wheels 42 is between two and six, preferably three, to ensure the stability and balance of operation. A rotating shaft 7 is fixed to the upper surface of the lower planetary carrier 45, and the first planetary wheel 42 rotates on the rotating shaft 7 and drives the lower planetary carrier 45 to rotate. A driving tooth 46 is provided on the outer side of the lower planetary carrier 45 to output the transmission torque. A reversal connection hole 47 is also provided on the lower planetary carrier 45.

[0033] The driven transmission mechanism 5 includes a first transmission gear 51 meshing with the driving teeth 46, a second transmission gear 52 meshing with the first transmission gear 51, and a driven connecting sleeve 53 meshing with the second transmission gear 52. A driven connecting sleeve 53 is provided with a driven connecting hole 54. The reversing connecting hole 47 outputs a torque opposite to the torque direction of the rotating mechanism 1, and the driven connecting hole 54 outputs a torque in the same direction as the torque direction of the rotating mechanism 1. The reverse torque is transmitted through the planetary reversing mechanism 4, with strong load-bearing capacity, high transmission ratio and high efficiency. The forward torque is transmitted through the driven transmission mechanism 5, with a simple structure and low cost. In this embodiment, the unidirectional rotation output by the rotating mechanism 1 is converted into a simultaneous bidirectional rotation through the planetary reversing mechanism 4 and the driven transmission mechanism 5, so as to meet the rotation requirements in multiple directions.

[0034] The reverse connection hole 47 and the driven connection hole 54 can be connected to other structures to transmit torque according to methods known in the art. Optionally, a keyway (not marked in the figure) is provided in the reverse connection hole 47 and the driven connection hole 54 to transmit torque through key connection.

[0035] The specific structures of the planetary reversing mechanism 4 and the driven transmission mechanism 5 are described below:

[0036] Please refer to Figure 2 , the reversing connection hole 47 and the driven connection hole 54 are coaxially arranged and connected, and the aperture of the reversing connection hole 47 is smaller than the aperture of the driven connection hole 54. It is convenient to connect to the double-layer rotating structure with a rotating sleeve on the shaft body (not shown in the figure) to achieve coaxial bidirectional rotation. The planetary reversing mechanism 4 also includes an upper planetary carrier 43, the first planetary gear 42 is arranged between the upper planetary carrier 43 and the lower planetary carrier 45, and a connecting rod 44 is also arranged between the upper planetary carrier 43 and the lower planetary carrier 45. The connecting rod 44 is fixedly connected to the upper planetary carrier 43 and the lower planetary carrier 45 to stably support the first planetary gear 42.

[0037] The first planetary gear 42 is a double gear. Compared with ordinary gears, the double gear has higher transmission efficiency and wider transmission ratio range, which increases the practicality of the device.

[0038] The specific structures of the gear ring 3, the cover plate 2 and the bottom plate 6 are described below:

[0039] Please refer to 1 and Figure 2 , a ring gear 3 is sleeved on the planetary reversing mechanism 4, and the inner side of the ring gear 3 meshes with the first planetary gear 42. The ring gear 3 increases the operating stability of the first planetary gear 42. A first extension portion 31 is provided on the inner side of the ring gear 3, and a first transmission gear 51 and a second transmission gear 52 are provided on the first extension portion 31. Specifically, a rotating shaft 7 is provided on the first extension portion 31, and the first transmission gear 51 and the second transmission gear 52 rotate on the rotating shaft 7 and transmit torque. A cover plate 2 is provided between the rotating mechanism 1 and the planetary reversing mechanism 4. The output shaft of the rotating mechanism 1 passes through the cover plate 2 and is connected to the center wheel 41.

[0040] A bottom plate 6 is provided at one end of the first transmission gear 51 and the second transmission gear 52 away from the first planetary gear 42. A rotating shaft 7 is provided between the bottom plate 6 and the first extension portion 31, and the first transmission gear 51 and the second transmission gear 52 are arranged on the rotating shaft 7 to rotate and transmit torque. The planetary reversing mechanism 4 and the driven transmission mechanism 5 are both arranged inside the bottom plate 6, the cover plate 2 and the gear ring 3 to prevent debris from getting stuck between the meshing teeth.

[0041] The specific workflow of this embodiment is as follows:

[0042] The rotating mechanism 1 outputs torque, which is transmitted to the lower planetary carrier 45 along the central wheel 41 and the first planetary wheel 42. At this time, part of the torque is transmitted to the lower planetary carrier 45 through the reversing connection hole 47 to output the reverse torque. The other part of the torque is transmitted to the driven connection sleeve 53 along the lower planetary carrier 45, the first transmission gear 51 and the second transmission gear 52, and the positive torque is output through the driven connection hole 54 of the driven connection sleeve 53.

[0043] Embodiment 2

[0044] Based on the first embodiment, the second embodiment discloses a shredder equipped with a single planetary transmission device.

[0045] Figure 3 The exploded structure diagram of the shredder provided by the embodiment of the utility model is shown. Figure 4 The schematic diagram of the structure of the cutter assembly in the shredder provided by the embodiment of the utility model is shown. Figure 3 and Figure 4 , the shredder includes a cutter assembly and a single planetary transmission device.

[0046] The tool assembly includes an upper tool assembly 8 and a lower tool assembly 9. The upper tool assembly 8 and the lower tool assembly 9 are respectively connected to the reversing connection hole 47 and the driven connection hole 54 of the single planetary transmission device. Specifically, the upper tool assembly 8 is connected to the reversing connection hole 47, and the lower tool assembly 9 is connected to the driven connection hole 54, or the upper tool assembly 8 is connected to the driven connection hole 54, and the lower tool assembly 9 is connected to the reversing connection hole 47. By changing the connection relationship, the rotation direction of the upper tool assembly 8 and the lower tool assembly 9 is changed. Taking the upper tool assembly 8 connected to the driven connection hole 54 as an example, the upper tool assembly 8 receives the positive torque output by the driven connection hole 54 and can rotate forward. At this time, the lower tool assembly 9 is connected to the reversing connection hole 47, and the lower tool assembly 9 receives the reverse torque output by the reversing connection hole 47 and can rotate reversely.

[0047] The tool shaft 91 connected to the reverse connection hole 47 and the tool sleeve 81 connected to the driven connection hole 54 are also included. The upper knife assembly 8 and the lower knife assembly 9 are respectively arranged on the tool shaft 91 and the tool sleeve 81. The tool shaft 91 and the tool sleeve 81 can be connected to other structures according to methods known in the art to transmit torque. Optionally, the tool shaft 91 and the tool sleeve 81 are provided with keys (not shown in the figure) to transmit torque through the key connection.

[0048] This embodiment does not limit the combination relationship between the upper knife assembly 8 and the lower knife assembly 9 and the tool shaft 91 and the tool sleeve 81.

[0049] The specific workflow of this embodiment is as follows:

[0050] When the upper knife assembly 8 is connected to the tool shaft 91, the reverse connection hole 47 drives the tool shaft 91 to rotate in the reverse direction, driving the upper knife assembly 8 fixed on the tool shaft 91 to rotate in the reverse direction synchronously. The driven connection hole 54 drives the tool sleeve 81 to rotate forward, driving the lower knife assembly 9 fixed on the tool sleeve 81 to rotate forward synchronously.

[0051] When the upper knife assembly 8 is connected to the tool sleeve 81, the driven connection hole 54 drives the tool sleeve 81 to rotate forward, driving the upper knife assembly 8 fixed on the tool sleeve 81 to rotate forward synchronously. The reverse connection hole 47 drives the tool shaft 91 to rotate reversely, driving the lower knife assembly 9 fixed on the tool shaft 91 to rotate reversely synchronously.

[0052] It can be seen that the above single planetary transmission device converts the unidirectional rotation of the rotating mechanism 1 into a simultaneous bidirectional rotation to meet the rotation requirements in multiple directions. The above shredder drives the upper blade assembly 8 and the lower blade assembly 9 to rotate bidirectionally through the single planetary transmission device to improve the mixing effect.

[0053] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0054] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A single planetary transmission device, characterized in that: Driven by a rotating mechanism, the single planetary transmission device includes a planetary reversing mechanism and a driven transmission mechanism; The planetary reversal mechanism comprises a central wheel connected to the rotating mechanism, a first planetary wheel meshing with the central wheel, and a lower planetary carrier supporting the first planetary wheel; a driving tooth is arranged on the outer side of the lower planetary carrier, and a reversal connection hole is also opened on the lower planetary carrier; The driven transmission mechanism comprises a first transmission gear meshing with the driving gear, a second transmission gear meshing with the first transmission gear, and a driven connecting sleeve meshing with the second transmission gear; a driven connecting hole is formed on the driven connecting sleeve.

2. The single planetary transmission device according to claim 1, characterized in that: The inverting connection hole and the driven connection hole are coaxially arranged and connected, and the aperture of the inverting connection hole is smaller than the aperture of the driven connection hole.

3. The single planetary transmission device according to claim 1, characterized in that: The planetary reversal mechanism further includes an upper planet carrier, the first planetary gear is arranged between the upper planet carrier and the lower planet carrier, and a connecting rod is further arranged between the upper planet carrier and the lower planet carrier.

4. The single planetary transmission device according to claim 1, characterized in that: The first planetary gear is a duplex gear.

5. The single planetary transmission device according to claim 1, characterized in that: The planetary reversal mechanism is sleeved with a gear ring, and the inner side of the gear ring is meshed with the first planetary gear.

6. The single planetary transmission device according to claim 5, characterized in that: A first extending portion is disposed inside the gear ring, and the first transmission gear and the second transmission gear are disposed on the first extending portion.

7. The single planetary transmission device according to claim 1, characterized in that: A cover plate is arranged between the rotating mechanism and the planetary reversing mechanism.

8. The single planetary transmission device according to claim 1, characterized in that: A bottom plate is disposed at one end of the first transmission gear and the second transmission gear away from the first planetary gear.

9. A shredder, characterized in that: It comprises an upper knife assembly, a lower knife assembly and a single planetary transmission device as claimed in any one of claims 1 to 8; the upper knife assembly and the lower knife assembly are respectively connected to the reversing connection hole and the driven connection hole of the single planetary transmission device.

10. The shredder according to claim 9, characterized in that: It also includes a tool shaft connected to the reversing connection hole and a tool sleeve connected to the driven connection hole; the upper knife assembly and the lower knife assembly are respectively arranged on the tool shaft and the tool sleeve.

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