Moving cutter locking structure and double-shaft shredding machine

Abstract

The utility model discloses a movable cutter locking structure and a double-shaft shredding machine. The movable cutter locking structure comprises a retaining ring, a locking disc and a plurality of puller bolts, the retaining ring is arranged on the first cutter shaft on one side of the second bearing plate in a sleeving mode, and the retaining ring abuts against the second bearing; the locking disc is located on the side, away from the second bearing plate, of the retaining ring, threads are arranged at the end, close to the first driving piece, of the first cutter shaft, the locking disc is in threaded connection with the first cutter shaft, and a plurality of threaded holes are formed in the locking disc; the multiple puller bolts are in threaded connection with the corresponding threaded holes, and one end of each puller bolt abuts against the retaining ring. The movable cutter locking structure can lock the movable cutter again when the movable cutter is loosened due to abrasion and gap enlargement, maintenance feasibility is achieved, maintenance efficiency is improved, and the use performance of equipment is stabilized.

Description

Technical Field

[0001] This utility model relates to the field of shredder equipment technology, and in particular to a moving blade locking structure and a dual-shaft shredder. Background Technology

[0002] In existing technologies, to solve assembly problems, twin-shaft shredders typically employ a single-sided positioning installation method, where the two sets of cutter shaft assemblies are installed in opposite directions. This ensures that both sets of cutter shaft assemblies can be locked from the same side under single-sided positioning. Since the power system of the twin-shaft shredder is located on both sides of the cutter box, one cutter shaft's locking end must inevitably be connected to the reducer output. During shredder operation, the blade clearance must be maintained to ensure its performance. In related technologies, the top-blade locking device connecting to the reducer output typically uses double round nuts. When blade wear occurs and the blade clearance widens, it becomes difficult to adjust the clearance and re-lock, severely impacting equipment performance. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a moving blade locking structure, which can lock the moving blades again when wear occurs, the gap between the blades increases, and loosening occurs.

[0004] This invention also proposes a dual-shaft shredder employing the moving blade locking structure.

[0005] According to a first aspect embodiment of the present invention, a moving blade locking structure is used in a dual-shaft shredder. The dual-shaft shredder includes a first driving member and a first cutter shaft. The first cutter shaft is driveably connected to the first driving member. One end of the first cutter shaft is connected to a first bearing plate via a first bearing, and the other end is connected to a second bearing plate via a second bearing. The first driving member is located on the side closest to the second bearing plate. Along the axial direction of the first cutter shaft, a plurality of spacers and a plurality of moving blades are sequentially spaced apart on the first cutter shaft between the first bearing plate and the second bearing plate. It is capable of moving along the axial direction of the first cutter shaft; the moving tool locking structure includes a retaining ring, a locking disc, and multiple tightening bolts. The retaining ring is sleeved on the first cutter shaft on one side of the second bearing plate, and the retaining ring abuts against the second bearing. The locking disc is located on the side of the retaining ring away from the second bearing plate, and one end of the first cutter shaft near the first drive member is provided with a thread. The locking disc is threadedly connected to the first cutter shaft, and the locking disc is provided with multiple threaded holes. Multiple tightening bolts are threadedly connected to the corresponding threaded holes, and one end of the tightening bolt abuts against the retaining ring.

[0006] The moving blade locking structure according to the embodiments of this utility model has at least the following beneficial effects: When the moving blade of the dual-shaft shredder using the moving blade locking structure of this utility model wears and the gap widens, resulting in loosening, it is only necessary to tighten the top bolt again to press the anti-reverse ring, causing the anti-reverse ring to move axially along the first blade shaft. The anti-reverse ring then presses the second bearing, causing the second bearing to move axially along the first blade shaft, thereby pressing the spacer and the moving blade. This allows the worn moving blade to be locked again, ensuring the blade gap on the first blade shaft. This achieves the feasibility of maintenance and greatly improves the efficiency of maintenance. It solves the problem of difficulty in adjusting the gap and locking again when the dual-shaft shredder uses single-sided positioning due to blade wear, widened blade gap, and difficulty in locking again, thus stabilizing the performance of the equipment.

[0007] According to some embodiments of the present invention, the anti-reverse ring is provided with a plurality of countersunk holes on the side near the locking disc, and one end of the tightening bolt passes through the corresponding countersunk hole.

[0008] According to some embodiments of the present invention, an anti-rotation structure is provided between the anti-reverse ring and the first cutter shaft to prevent the anti-reverse ring from rotating relative to the first cutter shaft.

[0009] According to some embodiments of the present invention, the anti-rotation structure includes a first slot, a second slot, and a locking block. The first slot is disposed on the surface of the first cutter shaft along the axial direction of the first cutter shaft, the second slot is disposed on the inner end face of the anti-reverse ring along the axial direction of the anti-reverse ring, and the locking block is embedded in the first slot and the second slot.

[0010] According to some embodiments of the present invention, a first limiting part is provided at one end of the first cutter shaft near the first bearing plate. The first limiting part is used to cooperate with the anti-reverse ring to limit the spacer and the moving cutter.

[0011] According to some embodiments of the present invention, the first limiting part is a first shoulder disposed on the first cutter shaft.

[0012] The dual-shaft shredder according to a second aspect of the present invention includes the moving blade locking structure described in any of the preceding claims.

[0013] According to some embodiments of the present invention, it further includes a second cutter shaft and a second driving member that is drively connected to the second cutter shaft. The second cutter shaft is rotatably disposed on the first bearing plate and the second bearing plate via bearings and is arranged side by side with the first cutter shaft. The second driving member is located at one end of the first bearing plate.

[0014] According to some embodiments of the present invention, the second cutter shaft is provided with a locking element at one end near the second bearing plate.

[0015] According to some embodiments of the present invention, a second shoulder is provided at one end of the second cutter shaft near the first bearing plate. The second shoulder is used to cooperate with the locking member to limit the spacer sleeved on the second cutter shaft and the moving cutter.

[0016] The dual-shaft shredder according to the embodiments of this utility model has at least the following beneficial effects: During the service life of the dual-shaft shredder of this utility model, when the moving blade wears and the gap becomes large, resulting in loosening, it is only necessary to tighten the top bolt again to press the anti-reverse ring, causing the anti-reverse ring to move axially along the first blade shaft. The anti-reverse ring then presses the second bearing, causing the second bearing to move axially along the first blade shaft, thereby pressing the spacer and the moving blade, so that the worn moving blade can be locked again, ensuring the blade gap on the first blade shaft. This achieves the feasibility of maintenance and greatly improves the efficiency of maintenance. It solves the problem that when the dual-shaft shredder uses single-sided positioning, it is difficult to adjust the gap and lock it again due to blade wear and large blade gap. This stabilizes the performance of the equipment.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0019] Figure 1 This is a cross-sectional view of a dual-shaft shredder according to an embodiment of the present invention;

[0020] Figure 2 This is a three-dimensional schematic diagram of the first cutter shaft of a dual-shaft shredder according to an embodiment of the present invention;

[0021] Figure 3 for Figure 1 Enlarged diagram of point A in the middle.

[0022] Icon labels:

[0023] Dual-shaft shredder 100, blade box 101, first blade shaft 102, first slot 103, first shoulder 104, second blade shaft 105, second shoulder 106, locking component 107, first drive component 108, second drive component 109, first bearing plate 110, second bearing plate 111, first bearing 112, second bearing 113, third bearing 114, fourth bearing 115, spacer 116, moving blade 117;

[0024] Moving knife locking structure 200, anti-reverse ring 201, countersunk hole 202, second slot 203, locking disc 204, threaded hole 205, tightening bolt 206, and locking block 207. Detailed Implementation

[0025] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0026] In the description of this utility model, it should be understood that the orientation descriptions, such as left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] In the description of this utility model, the use of "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features or the order of the technical features.

[0028] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0029] The dual-shaft shredder 100 proposed in this embodiment of the invention is assembled using a single-sided positioning installation method.

[0030] Reference Figure 1 The dual-shaft shredder 100 of this utility model includes a blade box 101, a first blade shaft 102, a second blade shaft 105, a first drive member 108, and a second drive member 109. The first drive member 108 and the second drive member 109 are arranged on opposite sides of the blade box 101. A first bearing plate 110 and a second bearing plate 111 are provided inside the blade box 101. The first bearing plate 110 and the second bearing plate 111 are arranged opposite to each other. The first blade shaft 102 and the second blade shaft 105 are arranged side by side and are rotatably mounted in the blade box 101 through bearings installed on the first bearing plate 110 and the second bearing plate 111. The first blade shaft 102 is driven by the first drive member 108, and the second blade shaft 105 is driven by the second drive member 109. Both the first drive member 108 and the second drive member 109 are motors.

[0031] Specifically, one end of the first cutter shaft 102 is connected to the first bearing plate 110 via the first bearing 112, and the other end is connected to the second bearing plate 111 via the second bearing 113. The first drive member 108 is located on the side close to the second bearing plate 111. One end of the second cutter shaft 105 is connected to the second bearing plate 111 via the third bearing 114, and the other end is connected to the first bearing plate 110 via the fourth bearing 115. The second drive member 109 is located on the side close to the first bearing plate 110. Along the axial direction of the first cutter shaft 102, a plurality of spacers 116 and a plurality of moving blades 117 are sequentially and spaced apart on the first cutter shaft 102 between the first bearing plate 110 and the second bearing plate 111. During assembly, the plurality of spacers 116 and the plurality of moving blades 117 can move along the axial direction of the first cutter shaft 102. Similarly, along the axial direction of the second cutter shaft 105, a plurality of spacers 116 and a plurality of moving blades 117 are sequentially and spaced apart on the second cutter shaft 105 between the first bearing plate 110 and the second bearing plate 111. During assembly, the plurality of spacers 116 and the plurality of moving blades 117 can move along the axial direction of the second cutter shaft 105.

[0032] In this embodiment, the first bearing plate 110 serves as the mounting base for the first cutter shaft 102 and the second cutter shaft 105. Thus, the moving blades 117 and spacers 116 on both the first and second cutter shafts 102 and 105 can be locked from the locking structure located on the same side, facilitating the assembly and adjustment of the dual-shaft shredder 100. Since the locking structure for the moving blade 117 on the first cutter shaft 102 is located near the reducer connected to the first drive member 108, it is necessary to consider that when the moving blade 117 wears and the blade clearance increases, the blade clearance can be readjusted through the locking structure, and the moving blade 117 can be locked again.

[0033] Therefore, the dual-shaft shredder 100 of this utility model adopts the locking structure of the moving blade 117 of the first blade shaft 102 as described below.

[0034] Reference Figure 1 , Figure 2 , Figure 3 The locking structure of the moving tool 117 includes a retaining ring 201, a locking disc 204, and multiple tightening bolts 206. The retaining ring 201 is sleeved on the first tool shaft 102 on one side of the second bearing plate 111 and abuts against the second bearing 113. The locking disc 204 is located on the side of the retaining ring 201 away from the second bearing plate 111. One end of the first tool shaft 102 near the first driving member 108 is provided with a thread. The locking disc 204 is threadedly connected to the first tool shaft 102. The locking disc 204 is provided with multiple threaded holes 205. Multiple tightening bolts 206 are threadedly connected to the corresponding threaded holes 205. One end of the tightening bolt 206 abuts against the retaining ring 201.

[0035] The locking structure of the moving blade 117 of this utility model not only locks the moving blade 117 and spacer 116 during the assembly of the shredder, preventing axial movement of the moving blade 117 and spacer 116 during use, but also, during the service life of the dual-shaft shredder 100, when the moving blade 117 wears and the gap widens, causing loosening, it is only necessary to tighten the top bolt 206 again to press the anti-reverse ring 201, causing the anti-reverse ring 201 to move axially along the first blade shaft 102, and the anti-reverse ring 201 then presses against the second blade shaft 102. The bearing 113 allows the second bearing 113 to move axially along the first cutter shaft 102, thereby pressing against the spacer 116 and the moving blade 117. This allows the worn moving blade 117 to be locked again, ensuring the blade clearance on the first cutter shaft 102. This makes maintenance feasible and greatly improves maintenance efficiency. It solves the problem of difficulty in adjusting and locking the clearance due to wear of the moving blade 117 and increased blade clearance when the dual-shaft shredder 100 uses single-sided positioning, thus stabilizing the performance of the equipment.

[0036] Reference Figure 2 In some embodiments, the anti-reverse ring 201 has a plurality of countersunk holes 202 on the side near the locking disc 204, and one end of the tightening bolt 206 passes through the corresponding countersunk hole 202 and extends into the corresponding countersunk hole 202, thereby facilitating the positioning of the tightening bolt 206.

[0037] Reference Figure 2 In some embodiments, an anti-rotation structure is provided between the anti-reverse ring 201 and the first cutter shaft 102, which can prevent the anti-reverse ring 201 and the first cutter shaft 102 from rotating relative to each other.

[0038] Specifically, refer to Figure 2 In this embodiment, the anti-rotation structure includes a first slot 103, a second slot 203, and a locking block 207. The first slot 103 is disposed on the surface of the first cutter shaft 102 along the axial direction of the first cutter shaft 102. The second slot 203 is disposed on the inner end face of the anti-reverse ring 201 along the axial direction of the anti-reverse ring 201. The locking block 207 is embedded in the first slot 103 and the second slot 203.

[0039] Reference Figure 2 In some embodiments, the first cutter shaft 102 is provided with a first limiting part at one end near the first bearing plate 110, and the moving cutter 117 and the sleeve are disposed between the first limiting part and the second bearing 113. The first limiting part is used to cooperate with the anti-reverse ring 201 to limit the spacer 116 and the moving cutter 117.

[0040] Reference Figure 2 In some embodiments, the first limiting part is a first shoulder 104 provided on the first cutter shaft 102. The first shoulder 104 and the first cutter shaft 102 are integrally formed, which reduces the assembly process of the component and facilitates the processing of the component.

[0041] It is understandable that the first limiting part can also be a limiting ring fitted on the first cutter shaft 102, and this is not limited here.

[0042] The working principle of the locking structure of the movable knife 117 in a specific embodiment of this utility model will be explained below with reference to the accompanying drawings.

[0043] Reference Figure 1 , Figure 2 , Figure 3 After the first cutter shaft 102 of the dual-shaft shredder 100 is assembled, the anti-reverse ring 201 is fitted onto the first cutter shaft 102. The locking disc 204 is threadedly connected to the first cutter shaft 102 and tightened until the threaded hole 205 of the locking disc 204 is aligned with the countersunk hole 202 on the anti-reverse ring 201. The tightening bolt 206 is then screwed in so that one end of the tightening bolt 206 is inserted into the corresponding countersunk hole 202. The tightening bolt 206 is then tightened, and the tightening bolt 206 tightens the anti-reverse ring 201, thereby causing the anti-reverse ring 201 to move axially along the first cutter shaft 102. The anti-reverse ring 201 then presses against the second bearing 113, causing the second bearing 113 to move axially along the first cutter shaft 102, thereby pressing against the spacer 116 and the moving blade 117, locking the spacer 116 and the moving blade 117 on the first cutter shaft 102, thus completing the assembly of the dual-shaft shredder 100.

[0044] During the service life of the dual-shaft shredder 100, when the moving blade 117 wears down and the gap widens, causing it to loosen, tighten the top bolt 206 again. The top bolt 206 presses against the anti-reverse ring 201, causing the anti-reverse ring 201 to move axially along the first blade shaft 102. The anti-reverse ring 201 then presses against the second bearing 113, causing the second bearing 113 to move axially along the first blade shaft 102, and then presses against the spacer 116 and the moving blade 117, so that the worn moving blade 117 can be locked again, ensuring the blade clearance on the first blade shaft 102.

[0045] Reference Figure 1 The second cutter shaft 105 is provided with a locking member 107 at one end near the second bearing plate 111. The locking member 107 can be a single round nut or a double round nut, which is not limited here.

[0046] The second cutter shaft 105 is provided with a second shoulder 106 at one end near the first bearing plate 110. The second shoulder 106 is used to cooperate with the locking member 107 and can limit the spacer 116 and the moving cutter 117 sleeved on the second cutter shaft 105.

[0047] The technical features of the above embodiments can be combined in any way. For the sake of brevity, 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.

[0048] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A moving blade locking structure for a dual-shaft shredder, wherein, A dual-shaft shredder includes a first drive component and a first cutter shaft. The first cutter shaft is driveably connected to the first drive component. One end of the first cutter shaft is connected to a first bearing plate via a first bearing, and the other end is connected to a second bearing plate via a second bearing. The first drive component is located on the side closer to the second bearing plate. Along the axial direction of the first cutter shaft, a plurality of spacers and a plurality of movable blades are sequentially spaced on the first cutter shaft between the first bearing plate and the second bearing plate. The plurality of spacers and the plurality of movable blades are movable along the axial direction of the first cutter shaft. The movable blade locking structure includes: A retaining ring is fitted onto one side of the second bearing plate, and the retaining ring abuts against the second bearing. A locking disc is located on the side of the anti-reverse ring away from the second bearing plate. One end of the first cutter shaft near the first drive member is provided with a thread. The locking disc is threadedly connected to the first cutter shaft. The locking disc is provided with multiple threaded holes. Multiple tightening bolts are provided, each bolt being threaded into a corresponding threaded hole, with one end of each bolt abutting against the anti-reverse ring.

2. The moving blade locking structure according to claim 1, characterized in that, The anti-reverse ring has multiple countersunk holes on the side near the locking disc, and one end of the tightening bolt passes through the corresponding countersunk hole.

3. The moving blade locking structure according to claim 1, characterized in that, An anti-rotation structure is provided between the anti-reverse ring and the first cutter shaft to prevent the anti-reverse ring from rotating relative to the first cutter shaft.

4. The moving blade locking structure according to claim 3, characterized in that, The anti-rotation structure includes a first slot, a second slot, and a locking block. The first slot is disposed on the surface of the first cutter shaft along the axial direction of the first cutter shaft. The second slot is disposed on the inner end face of the anti-reverse ring along the axial direction of the anti-reverse ring. The locking block is embedded in the first slot and the second slot.

5. The moving blade locking structure according to claim 1, characterized in that, The first cutter shaft has a first limiting part at one end near the first bearing plate. The first limiting part is used to cooperate with the anti-reverse ring to limit the spacer and the moving cutter.

6. The moving blade locking structure according to claim 5, characterized in that, The first limiting part is a first shoulder disposed on the first cutter shaft.

7. A dual-shaft shredder, characterized in that, Includes the moving blade locking structure as described in any one of claims 1 to 6.

8. The dual-shaft shredder according to claim 7, characterized in that, It also includes a second cutter shaft and a second drive unit that is drively connected to the second cutter shaft. The second cutter shaft is rotatably mounted on the first bearing plate and the second bearing plate via bearings and is arranged side by side with the first cutter shaft. The second drive unit is located at one end of the first bearing plate.

9. The dual-shaft shredder according to claim 8, characterized in that, The second cutter shaft has a locking element at one end near the second bearing plate.

10. The dual-shaft shredder according to claim 9, characterized in that, The second cutter shaft has a second shoulder at one end near the first bearing plate. The second shoulder is used to engage with the locking member to limit the spacer sleeve and the moving cutter sleeved on the second cutter shaft.

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