Shaft end locking tool facilitating installation of cutter shaft of shredding machine

Abstract

The utility model provides a shaft end locking tool convenient for mounting a cutter shaft of a shredder. The shaft end locking tool comprises a plurality of threaded holes formed in the end face of the cutter shaft, and the threaded holes are formed in the circumferential direction of the end face. The tool body is provided with an avoiding cavity, openings are formed in the two ends of the avoiding cavity in the axial direction of the cutter shaft and communicate with the avoiding cavity, and one opening is used for allowing the end of the cutter shaft of the shredding machine to penetrate through so that the end of the cutter shaft can be contained in the avoiding cavity. The connecting plate is arranged at the end, away from the bearing spacer bush, of the tool body and used for being connected with the end edge of the other opening of the tool body, the connecting plate is provided with a plurality of through holes, and the through holes correspond to the threaded holes. The multiple bolts are used for being arranged in the corresponding through holes in a penetrating mode and can be in threaded connection with the corresponding threaded holes, and the end edge, close to the opening of the bearing spacer bush, of the tool body can abut against the bearing spacer bush through the bolts. According to the utility model, the mounting and tool changing efficiency of the tool shaft can be improved, the tightening torque of the round nut is ensured, and the stability of equipment is improved.

Description

Technical Field

[0001] This utility model relates to the field of shredder technology, and in particular to a shaft end locking fixture that facilitates the installation of shredder cutter shafts. Background Technology

[0002] Existing dual-shaft shredders typically use a double-round nut structure to lock the moving blades at the power input end of the cutter shaft. Due to the presence of multiple layers of mating surfaces between the moving blades and spacers, uneven gaps and poor fit between the blades and spacers can easily occur during assembly, leading to incomplete tightening. This makes it difficult to guarantee the accurate tightening torque of the round nuts, and in severe cases, the round nuts may even loosen during use. Furthermore, it is difficult to apply torque to the round nuts, resulting in low installation efficiency and the need for multiple adjustments during initial assembly or blade replacement maintenance, seriously affecting production and maintenance schedules. 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 shaft end locking fixture that facilitates the installation of the shredder cutter shaft, thereby improving the efficiency of cutter shaft installation and blade replacement, ensuring the tightening torque of the round nut, and improving the stability of the equipment.

[0004] A shaft end locking fixture for easy installation of a shredder cutter shaft according to an embodiment of the present invention includes a plurality of threaded holes disposed on the end face of the cutter shaft, the threaded holes being disposed circumferentially along the end face; the fixture body has a relief cavity, and along the axial direction of the cutter shaft, the relief cavity has openings at both ends, the openings communicating with the relief cavity, one of the openings being used for the end of the shredder cutter shaft to pass through, so that the end of the cutter shaft is accommodated in the relief cavity, the end edge of the opening being used to abut against the bearing spacer of the cutter shaft; a connecting plate is disposed at one end of the fixture body away from the bearing spacer, and is used to connect to the end edge of another opening of the fixture body, the connecting plate having a plurality of through holes, the through holes being correspondingly disposed to the threaded holes; a plurality of bolts being used to pass through the corresponding through holes, and being threadedly connected to the corresponding threaded holes, so that when the fixture body is fixed to the cutter shaft, the bolts allow the end edge of the fixture body near the opening of the bearing spacer to abut against the bearing spacer.

[0005] The shaft end locking fixture for facilitating the installation of the shredder cutter shaft according to the embodiments of the present invention has at least the following beneficial effects: the locking fixture of the present invention greatly improves the efficiency of cutter shaft installation and cutter replacement, and ensures the tightening torque of the round nut, thereby improving the stability of the equipment.

[0006] According to some embodiments of the present invention, the tooling body is cylindrical in shape, and a first process hole is provided on the side wall of the tooling body near the bearing spacer. The first process hole is used for a tool for fastening the round nut on the cutter shaft to extend into.

[0007] According to some embodiments of this utility model, the through holes are circumferentially distributed on the connecting plate around the axis of the tooling body.

[0008] According to some embodiments of this utility model, the connecting plate and the tooling body are separate structures.

[0009] According to some embodiments of the present invention, the tooling body includes a first cylinder and a second cylinder. The first cylinder is close to the bearing spacer, and the second cylinder is close to the connecting plate. The first cylinder and the second cylinder have different lengths. Along the axial direction of the tooling body, the first cylinder can dock with the second cylinder.

[0010] According to some embodiments of the present invention, the first process hole is located on the side wall of the first cylinder near the bearing spacer.

[0011] According to some embodiments of the present invention, the side wall of the second cylinder is provided with a second process hole.

[0012] According to some embodiments of the present invention, the first cylinder is provided with a first step, the second cylinder is provided with a second step, and the first step is used to overlap the second step.

[0013] According to some embodiments of this utility model, the connecting plate is fixedly connected to the tooling body.

[0014] 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

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0016] Figure 1 This is a three-dimensional exploded view of the shaft end locking tool of one embodiment of the present invention in use.

[0017] Figure 2 This is a cross-sectional view of a shaft end locking fixture according to an embodiment of the present invention in use.

[0018] Figure 3 for Figure 1 Enlarged view of point A in the middle;

[0019] Figure 4 for Figure 2 Enlarged view of point B in the middle.

[0020] Icon labels:

[0021] Shredder 100, blade box 101, blade shaft 102, threaded hole 103, first bearing plate 104, second bearing plate 105, spacer 106, moving blade 107, bearing spacer 108, round nut 109;

[0022] Shaft end locking fixture 200, fixture body 201, first cylinder 202, first process hole 203, first step 204, second cylinder 205, second step 206, second process hole 207, clearance cavity 208, connecting plate 209, through hole 210, bolt 211. Detailed Implementation

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] Reference Figure 1 , Figure 2The shredder 100 of this utility model includes a blade box 101 and a blade shaft 102. A first bearing plate 104 and a second bearing plate 105 are disposed inside the blade box 101, with the first bearing plate 104 and the second bearing plate 105 arranged opposite to each other. The blade shaft 102 is rotatably mounted inside the blade box 101 via bearings mounted on the first bearing plate 104 and the second bearing plate 105. Along the axial direction of the blade shaft 102, a plurality of spacers 106 and a plurality of moving blades 107 are sequentially and spaced apart on the blade shaft 102 between the first bearing plate 104 and the second bearing plate 105. During assembly, the plurality of spacers 106 and the plurality of moving blades 107 can move along the axial direction of the blade shaft 102, thereby locking the spacers 106 and the moving blades 107 onto the blade shaft 102 by round nuts 109. Because there are multiple mating surfaces of moving blades 107 and spacers 106 on the cutter shaft 102, uneven gaps between the moving blades 107 and spacers 106, or even jamming between them, can easily occur during assembly. This makes it difficult to ensure the accuracy of the tightening torque of the round nut 109, and in severe cases, the round nut 109 may loosen during use. Furthermore, it is difficult to apply torque to the round nut 109, which often results in low installation efficiency and requires multiple adjustments during initial assembly or tool replacement for maintenance of the cutter shaft 102, seriously affecting production and maintenance progress.

[0028] Therefore, this utility model proposes a shaft end locking fixture 200 for easy installation of the shredder cutter shaft.

[0029] Reference Figure 1 , Figure 2 , Figure 3The present invention provides a shaft end locking fixture 200 for easy installation of a shredder cutter shaft, comprising a fixture body 201, a connecting plate 209, and multiple bolts 211. The end face of the shredder cutter shaft 102 is provided with multiple threaded holes 103, arranged circumferentially along the end face. The fixture body 201 has a cylindrical structure, thereby forming a clearance cavity 208 within the fixture body 201. Along the axial direction of the cutter shaft 102, both ends of the clearance cavity 208 have openings communicating with the clearance cavity 208. The end of the cutter shaft 102 located outside the cutter box 101 of the shredder 100 can pass through one of the openings, allowing the end of the cutter shaft 102 to pass through. The tool body 201 is housed in the relief cavity 208, and the end edge of the opening can abut against the bearing spacer 108 of the cutter shaft 102. The connecting plate 209 is located at one end of the tool body 201 away from the bearing spacer 108 and is used to connect with the end edge of the other opening of the tool body 201. The connecting plate 209 is provided with multiple through holes 210, and the through holes 210 are correspondingly provided with threaded holes 103. Multiple bolts 211 are used to pass through the corresponding through holes 210 and can be threaded to the corresponding threaded holes 103, so that when the tool body 201 is fixed to the cutter shaft 102, the bolts 211 can make the end edge of the tool body 201 close to the opening of the bearing spacer 108 press against the bearing spacer 108.

[0030] When assembling the cutter shaft 102 of the shredder 100, the spacer 106 and the moving blade 107 are sequentially and alternately fitted onto the cutter shaft 102, and bearings are installed at both ends of the cutter shaft 102. The cutter shaft 102 is then assembled onto the cutter box 101, and one end of the cutter shaft 102 is limited. A round nut 109 is threaded onto the other end. The shaft end locking fixture 200 of this invention is then assembled to the end of the cutter shaft 102. That is, the fixture body 201 is inserted along the end of the cutter shaft 102, and the connecting plate 209 is assembled to the end of the cutter shaft 102 using bolts 211, so that the connecting plate 209 presses against the fixture body 201. The end edge of the fixture body 201 away from the opening of the bearing spacer 108 presses against the bearing spacer 108. Continue to tighten the bolts 211 so that the fixture body 201 presses the bearing spacer 108 tightly. The moving cutter 107, the spacer 106 and the bearing are pressed together one by one through the bearing spacer 108, eliminating the problem of uneven gaps between adjacent moving cutters 107 and spacers 106 and between spacers 106 and bearings. Then tighten the round nut 109. Finally, disassemble the shaft end locking fixture 200 to complete the locking of the cutter shaft 102 and complete the torque control of the round nut 109.

[0031] The shaft end locking fixture 200 of the shredder cutter shaft installation of this utility model can ensure the accuracy of the tightening torque of the round nut 109, which greatly improves the installation and cutter replacement efficiency of the cutter shaft 102, and ensures the tightening torque of the round nut 109, thereby improving the stability of the equipment.

[0032] Reference Figure 1 , Figure 3 In some embodiments, the tooling body 201 is cylindrical in shape. A first process hole 203 is provided on the side wall of the tooling body 201 near the bearing spacer 108. The first process hole 203 is used for the tool for fastening the round nut 109 on the cutter shaft 102 to extend into. After the bearing spacer 108 is tightened by the shaft end locking tooling 200, the moving cutter 107, the spacer 106 and the bearing are tightened one by one, and then the tool for tightening the round nut 109 is inserted into the first process hole 203 to tighten the round nut 109.

[0033] Reference Figure 1 , Figure 3 In some embodiments, through holes 210 are circumferentially distributed on the connecting plate 209 around the axis of the tooling body 201, and correspondingly, multiple threaded holes 103 are circumferentially distributed on the end face of the cutter shaft 102. Thus, by sequentially aligning and tightening the bolts 211, the gap between the moving cutter 107 and the spacer 106 can be continuously adjusted during the tightening process, greatly improving installation efficiency.

[0034] Reference Figure 2 , Figure 4 In some embodiments, the connecting plate 209 and the tooling body 201 are separate structures to facilitate the assembly of the shaft end locking tooling 200 on the cutter shaft 102.

[0035] Reference Figure 1 , Figure 2 , Figure 3 In some embodiments, the tooling body 201 includes a first cylinder 202 and a second cylinder 205. The first cylinder 202 is close to the bearing spacer 108, and the second cylinder 205 is close to the connecting plate 209. The first cylinder 202 and the second cylinder 205 have different lengths. Along the axial direction of the tooling body 201, the first cylinder 202 can be connected to the second cylinder 205. After connection, the first cylinder 202 and the second cylinder 205 can be used in conjunction with the connecting plate 209. Moreover, the first cylinder 202 and the second cylinder 205 can be used individually with the connecting plate 209. That is, the first cylinder 202 and the second cylinder 205 can be used alone, or the first cylinder 202 and the second cylinder 205 can be used in combination. Thus, the assembly of the cutter shaft 102 can be satisfied even when the length of the cutter shaft 102 extending out of the bearing plate of different shredders 100 is different.

[0036] Reference Figure 1 , Figure 3In some embodiments, a first process hole 203 is provided on the side wall of the first cylinder 202 near the bearing spacer 108, and a second process hole 207 is provided on the side wall of the second cylinder 205. When the first cylinder 202 is used alone with the connecting plate 209 and when the second cylinder 205 is used alone with the connecting plate 209, a tool for tightening the round nut 109 can be inserted through the first process hole 203 or the second process hole 207 to tighten the round nut 109.

[0037] Reference Figure 4 In some embodiments, the first cylinder 202 is provided with a first step 204, and the second cylinder 205 is provided with a second step 206. The first step 204 is used to overlap the second step 206, thereby facilitating the assembly of the first cylinder 202 and the second cylinder 205 when used together.

[0038] It is understood that in some embodiments, the connecting plate 209 and the tooling body 201 may adopt a fixed connection structure, which is not limited here.

[0039] It should be noted that the tooling body 201 can also adopt other structural forms besides cylindrical shape, as long as one end of the tooling body 201 can abut against the bearing spacer 108.

[0040] 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.

[0041] 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 shaft end locking fixture for facilitating the installation of a shredder cutter shaft, characterized in that, include: Multiple threaded holes are provided on the end face of the cutter shaft, and the threaded holes are arranged circumferentially along the end face; The tooling body has a relief cavity. Along the axial direction of the cutter shaft, the two ends of the relief cavity have openings that communicate with the relief cavity. One of the openings is used for the end of the shredder cutter shaft to pass through, so that the end of the cutter shaft is accommodated in the relief cavity. The end edge of the opening is used to abut against the bearing spacer of the cutter shaft. A connecting plate is provided at one end of the tooling body away from the bearing spacer and is used to connect to the end edge of another opening of the tooling body. The connecting plate is provided with multiple through holes, and the through holes are provided corresponding to the threaded holes. Multiple bolts are used to pass through the corresponding through holes and can be threaded to the corresponding threaded holes, so that when the tool body is fixed to the cutter shaft, the end edge of the tool body near the opening of the bearing spacer can press against the bearing spacer through the bolts.

2. The shaft end locking fixture for facilitating the installation of the shredder cutter shaft according to claim 1, characterized in that, The tooling body is cylindrical in shape, and a first process hole is provided on the side wall of the tooling body near the bearing spacer. The first process hole is used for a tool for fastening the round nut on the cutter shaft to extend into.

3. The shaft end locking fixture for facilitating the installation of the shredder cutter shaft according to claim 2, characterized in that, The through holes are circumferentially distributed on the connecting plate around the axis of the tooling body.

4. The shaft end locking fixture for facilitating the installation of the shredder cutter shaft according to claim 1, characterized in that, The connecting plate and the tooling body are separate structures.

5. The shaft end locking fixture for facilitating the installation of the shredder cutter shaft according to claim 2, characterized in that, The tooling body includes a first cylinder and a second cylinder. The first cylinder is close to the bearing spacer, and the second cylinder is close to the connecting plate. The first cylinder and the second cylinder have different lengths. Along the axial direction of the tooling body, the first cylinder can dock with the second cylinder.

6. The shaft end locking fixture for facilitating the installation of the shredder cutter shaft according to claim 5, characterized in that, The first process hole is located on the side wall of the first cylinder near the bearing spacer.

7. The shaft end locking fixture for facilitating the installation of the shredder cutter shaft according to claim 5, characterized in that, The second cylinder has a second process hole on its side wall.

8. The shaft end locking fixture for facilitating the installation of the shredder cutter shaft according to claim 5, characterized in that, The first cylinder has a first step, and the second cylinder has a second step, with the first step being used to overlap the second step.

9. The shaft end locking fixture for facilitating the installation of the shredder cutter shaft according to claim 1, characterized in that, The connecting plate is fixedly connected to the tooling body.

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