Double-planetary transmission device and chopper

Abstract

The utility model relates to a double-planetary transmission device and a chopper, the double-planetary transmission device is driven by a rotating mechanism, and the double-planetary transmission device comprises a planetary reversing mechanism and a planetary 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 connected with the first planet wheel, driving teeth are arranged on the outer side of the lower planet carrier, and a reversing connecting hole is further formed in the lower planet carrier; the planetary transmission mechanism comprises a second planet wheel meshed with the lower planet carrier and a planet connecting sleeve meshed with the second planet wheel, and a planet connecting hole is further formed in the planet connecting sleeve. According to the utility model, the two planet wheel sets are matched, so that the multi-direction rotation requirement is met. The multiple gears in the planetary gear set participate in transmission at the same time, the meshing area is large, loads between the gears are evenly distributed, operation is stable, large torque is transmitted, and the structure is compact.

Description

Technical Field

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

[0002] The shredder is a very common equipment in production and life. It uses the rotation of the blade to efficiently shred materials into pieces or powder.

[0003] Many existing shredders use a double-blade counter-rotating solution. The driving mechanism connects the two-way blades through a reversing transmission device, which increases the rotational freedom of the blades and thus improves the shredding efficiency and quality. Limited by the strength of the components in the reversing transmission device, the torque of the two-way blades is relatively small. The two-way blades with low torque are difficult to cut high-density and high-strength materials, and the efficiency of cutting ordinary materials will also be reduced. The commonly used method of improving the strength of components, in addition to replacing the material, can only increase the volume of the components. The increased volume of the reversing transmission device is not suitable for miniaturized shredders in life.

[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 present invention is to provide a double planetary transmission device and a shredder, which adapt to the trend of miniaturization of shredders and improve the torque of the bidirectional blades of the shredder.

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

[0007] A double planetary transmission device is driven by a rotating mechanism, and the double planetary transmission device includes a planetary reversal mechanism and a planetary 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 connected to 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 planetary transmission mechanism includes a second planetary wheel meshing with the lower planetary carrier and a planetary connecting sleeve meshing with the second planetary wheel, and the planetary connecting sleeve is also provided with a planetary connection hole.

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

[0009] A further technical solution is that a second extension portion is provided on the planetary connecting sleeve, and the bent second extension portion engages with the second planetary gear.

[0010] 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.

[0011] A further technical solution is that a first extension portion is arranged on the inner side of the ring gear, and the second planetary gear is arranged on the first extension portion.

[0012] 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.

[0013] A further technical solution is that the first planetary gear is a double gear.

[0014] A further technical solution is that a cover plate is arranged between the rotating mechanism and the planetary reversal mechanism; and a bottom plate is arranged at one end of the second planetary gear away from the first planetary gear.

[0015] A shredder comprises an upper knife assembly, a lower knife assembly and a double planetary transmission device; the upper knife assembly and the lower knife assembly are respectively connected to a reversing connection hole and a planetary connection hole of the double 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 planetary 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 dual planetary transmission device in the utility model is connected to the planetary reversing mechanism through a planetary 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 planetary transmission mechanism outputs a torque in the same direction as the torque of the rotating mechanism through the planetary connection hole. The two planetary gear sets cooperate to meet the rotation requirements in multiple directions. Multiple gears in the planetary gear set participate in the transmission at the same time, the meshing area is large, the load distribution between the gears is uniform, the operation is stable, the transmission of large torque is large, and the structure is compact.

[0019] (2) Furthermore, the reverse connection hole and the planetary connection hole are coaxial and connected, and the aperture of the reverse connection hole is smaller than the aperture of the planetary 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 of the present invention is provided with an upper knife assembly and a lower knife assembly, which are respectively connected to the reversing connection hole and the planetary connection hole of the double planetary transmission device to receive the torque in the opposite direction and realize the reverse rotation of the upper knife assembly and the lower knife assembly. In addition, the double planetary transmission device has the characteristics of stable operation, large torque transmission and compact structure, which ensures that the shredder can efficiently process materials with higher density and strength, and adapts to the miniaturization of the shredder. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The figure shows a three-dimensional structural schematic diagram of the double planetary transmission device of the present invention with the gear ring and the bottom plate hidden.

[0022] Figure 2 A cross-sectional structural schematic diagram of a dual planetary transmission device of the present utility model is shown.

[0023] Figure 3 The exploded structural diagram of the shredder of the utility model is shown.

[0024] Figure 4 The utility model shows a schematic structural diagram of a cutter assembly in a shredder.

[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 gear; 43. Upper planetary carrier; 44. Connecting rod; 45. Lower planetary carrier; 46. Driving tooth; 47. Reversal connecting hole; 5. Planetary transmission mechanism; 51. Second planetary gear; 52. Planetary connecting sleeve; 53. Second extension part; 54. Planetary 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 The figure shows a three-dimensional structural schematic diagram of the double planetary transmission device of the present invention with the gear ring and the bottom plate hidden. Figure 2 The cross-sectional structure diagram of the double planetary transmission device of the utility model is shown. Figure 1 and Figure 2 , a double planetary transmission device is driven by a rotating mechanism 1, and the double planetary transmission device includes a planetary reversing mechanism 4 and a planetary 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 connected to 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 the 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 to output the reverse torque.

[0033] The planetary transmission mechanism 5 includes a second planetary gear 51 meshing with the lower planetary carrier 45 and a planetary connecting sleeve 52 meshing with the second planetary gear 51, and a planetary connecting sleeve 52 is also provided with a planetary connecting hole 54. The reversing connecting hole 47 outputs a torque opposite to the torque direction of the rotating mechanism 1, and the planetary connecting hole 54 outputs a torque in the same direction as the torque direction of the rotating mechanism 1. The reverse torque and the forward torque are transmitted through the planetary reversing mechanism 4 and the planetary transmission mechanism 5, respectively, with strong bearing capacity, high transmission ratio and high efficiency. 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 planetary transmission mechanism 5, so as to meet the rotation requirements in multiple directions.

[0034] The reversing connection hole 47 and the planetary 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 reversing connection hole 47 and the planetary connection hole 54 to transmit torque through the key connection.

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

[0036] Please refer to Figure 2 , the reversing connection hole 47 and the planetary connection hole 54 are coaxially arranged and connected, and the aperture of the reversing connection hole 47 is smaller than the aperture of the planetary 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. A second extension portion 53 is provided on the planetary connection sleeve 52, and the bent second extension portion 53 engages the second planetary gear 51. Specifically, the second extension portion 53 extends in a circular ring shape. While the annular second extension portion 53 transmits the torque of the second planetary gear 51, it increases the stability of the operation of the second planetary gear 51. The planetary reversing mechanism 4 also includes an upper planetary carrier 43, and 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 rod 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 Figure 1 and Figure 2The planetary reversing mechanism 4 is sleeved with a gear ring 3, and the inner side of the gear ring 3 meshes with the first planetary gear 42 to increase the running stability of the first planetary gear 42. The inner side of the gear ring 3 is provided with a first extension portion 31, and the second planetary gear 51 is provided on the first extension portion 31. Specifically, a planet carrier (not marked in the figure) is further provided between the second planetary gear 51 and the second extension portion 53, and a rotating shaft 7 is provided between the first extension portion 31 and the planet carrier, and the second planetary gear 51 rotates on the rotating shaft 7 and transmits torque.

[0040] A cover plate 2 is provided between the rotating mechanism 1 and the planetary reversing mechanism 4. A bottom plate 6 is provided at one end of the second planetary gear 51 away from the first planetary gear 42. The planetary reversing mechanism 4 and the planetary transmission mechanism 5 are both provided inside a cavity formed by the bottom plate 6, the cover plate 2 and the gear ring 3 to prevent debris from getting stuck between the meshing teeth.

[0041] Embodiment 2

[0042] Based on the first embodiment, the second embodiment discloses a shredder equipped with a double planetary transmission device.

[0043] Figure 3 The exploded structural diagram of the shredder of the utility model is shown. Figure 4 The schematic diagram of the structure of the cutter assembly in the shredder of the utility model is shown. Figure 3 and Figure 4 , the shredder includes a cutter assembly and a double planetary transmission device.

[0044] 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 planetary connection hole 54 of the double 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 planetary connection hole 54, or the upper tool assembly 8 is connected to the planetary 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 planetary connection hole 54 as an example, the upper tool assembly 8 receives the forward torque output by the planetary 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.

[0045] The tool shaft 91 connected to the reversing connection hole 47 and the tool sleeve 81 connected to the planetary 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.

[0046] 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.

[0047] The specific working process of the utility model is as follows:

[0048] 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 opposite direction, driving the upper knife assembly 8 fixed on the tool shaft 91 to rotate in the opposite direction synchronously. The planetary connection hole 54 drives the tool sleeve 81 to rotate forward, driving the lower knife assembly fixed on the tool sleeve 81 to rotate forward synchronously.

[0049] When the upper knife assembly 8 is connected to the tool sleeve 81, the planetary 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.

[0050] It can be seen that the above-mentioned double 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-mentioned shredder drives the upper knife assembly 8 and the lower knife assembly 9 to rotate bidirectionally through the double planetary transmission device to improve the shredding effect.

[0051] 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.

[0052] 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 double planetary transmission device, characterized in that: Driven by a rotating mechanism, the double planetary transmission device includes a planetary reversal mechanism and a planetary 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 connected to the first planetary wheel, wherein 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 planetary transmission mechanism comprises a second planetary gear meshing with the driving gear and a planetary connecting sleeve meshing with the second planetary gear, and a planetary connecting hole is also provided on the planetary connecting sleeve.

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

3. The double planetary transmission device according to claim 1, characterized in that: The planetary connecting sleeve is provided with a second extension portion, and the bent second extension portion engages with the second planetary gear.

4. The double 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.

5. The double planetary transmission device according to claim 4, characterized in that: A first extending portion is disposed inside the gear ring, and the second planetary gear is disposed on the first extending portion.

6. The double 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.

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

8. The double planetary transmission device according to claim 1, characterized in that: A cover plate is arranged between the rotating mechanism and the planetary reversing mechanism; and a bottom plate is arranged at one end of the second planetary 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 double 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 planetary connection hole of the double 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 planetary 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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