Knife rest assembly of pulverizer

Abstract

The utility model provides a knife rest assembly of a crusher, and belongs to the technical field of machinery. The problem that an existing knife rest is poor in structural stability is solved. The knife rest assembly of the pulverizer comprises a rotating shaft and a circle of connecting plates evenly distributed in the circumferential direction of the rotating shaft, each connecting plate abuts against and is fixedly provided with a blade, a connecting frame is fixed to the rotating shaft, the connecting frame is provided with straight pipe bodies, and the straight pipe bodies are arranged between the two ends of each connecting plate and the rotating shaft; external threaded columns are formed on the sides, close to the rotating shaft, of the two ends of the connecting plates, through holes are formed in the straight pipe bodies, nuts are arranged in the straight pipe bodies, the external threaded columns penetrate through the corresponding through holes and are screwed into the corresponding nuts, and the side walls of the straight pipe bodies are clamped between the corresponding nuts and the corresponding connecting plates; the two ends of the straight pipe body are a closed end and an open end respectively, and a plugging piece is detachably fixed to the open end. The blades are fixedly connected with the corresponding connecting plates in a welded mode. The pulverizer knife rest assembly is stable in structure.

Description

Technical Field

[0001] The utility model belongs to the technical field of machinery and relates to a crusher, in particular to a cutter holder assembly of a crusher. Background Art

[0002] A crusher uses mechanical force to crush solid materials into small pieces, fine powder or powder.

[0003] The cutter holder assembly is an important part of a crusher. Its structure is like a cutter holder structure of a crusher disclosed in the Chinese Patent Database (application number: 201210481222.0), which includes a cutter holder installed on the main shaft, and blades are installed on the cutter holder. Each circle of blades is a group, and the gap between each group of blades is 0.5 - 1.5 mm.

[0004] In the above cutter holder structure, the blade and the cutter holder are fixedly connected by bolts, and the bolts are directly exposed outside. As a result, during actual use, there is a large frictional resistance between the bolts and the crushed materials, and there is a probability of the bolts rotating outward and loosening under the action of the frictional resistance, which affects the crushing effect. Summary of the Utility Model

[0005] The purpose of the present utility model is to provide a cutter holder assembly of a crusher with stable structure in view of the above problems existing in the prior art.

[0006] The purpose of the present utility model can be achieved by the following technical solutions: A cutter holder assembly of a crusher includes a rotating shaft and a circle of connecting plates evenly distributed along the circumferential direction of the rotating shaft, and the length of the connecting plates extends along the axial direction of the rotating shaft. Blades are abutted and fixed on each connecting plate. A connecting frame is fixed on the rotating shaft. It is characterized in that the connecting frame has a straight pipe body, and the straight pipe bodies are provided between both ends of the connecting plates and the rotating shaft; the length of the straight pipe body extends along the width direction of the corresponding connecting plate. External threaded columns are formed on one side of both ends of the connecting plate close to the rotating shaft, and the axis of the external threaded column extends along the thickness direction of the corresponding connecting plate. Through holes are provided on the straight pipe body, and nuts are provided in each straight pipe body. The external threaded column passes through the corresponding through hole and is screwed into the corresponding nut, and the side wall of the straight pipe body is clamped between the corresponding nut and the corresponding connecting plate; both ends of the straight pipe body are respectively a closed end and an open end, and a plugging member for closing the port of the open end is detachably fixed on the open end; the blade and the corresponding connecting plate are fixedly connected by welding.

[0007] One end of the straight pipe body is closed and the other end is blocked by a detachable plugging member, so that the external threaded columns and nuts used to connect the connecting frame and the connecting plate are hidden in a closed space, effectively preventing the crushed materials from contacting the external threaded columns and nuts, ensuring the stable connection between the connecting plate and the connecting frame, and thus greatly enhancing the structural stability of the cutter holder assembly of the crusher.

[0008] In the above-mentioned shredder tool holder assembly, the type of the straight pipe body is a rectangular pipe, so as to effectively increase the contact area between the straight pipe body and the connecting plate and make the connection between the two more stable.

[0009] In the above-mentioned shredder tool holder assembly, the plugging member is a rubber column with a shape and size matching the inner hole of the open end. The rubber column is clamped in the open end. At this time, the outer side wall of the rubber column is in close contact with the inner side wall of the open end to form a seal. By inserting and pulling out the rubber column, the open end can be closed or opened, which is convenient to use.

[0010] In the above-mentioned shredder tool holder assembly, a convex column is formed on the end surface of the rubber column far from the closed end, and the outer diameter of the convex column is smaller than the outer diameter of the rubber column. The convex column is provided to provide a holding point and further facilitate the insertion and extraction of the rubber column.

[0011] As another solution, in the above-mentioned shredder tool holder assembly, the plugging member is a sealing cover, and one end of the sealing cover is screwed into the open end.

[0012] In the above-mentioned shredder tool holder assembly, the open end is arranged far from the corresponding blade to prevent the hand from contacting the blade when tightening the nut and reduce potential safety hazards.

[0013] In the above-mentioned shredder tool holder assembly, the number of connecting plates is 4. The connecting plate further includes two frames both in a cross shape. A connecting hole for the rotating shaft to pass through is penetrated on the frame, and the frame is fixedly connected to the rotating shaft; the straight pipe bodies are arranged on the four end parts of the frame, and the straight pipe bodies are perpendicular to the corresponding end parts of the frame. The above design is adopted to enable the straight pipe body to obtain strong support and effectively enhance the connection stability between the connecting plate and the straight pipe body.

[0014] In the above-mentioned shredder tool holder assembly, the frame and the corresponding straight pipe body are of an integral structure.

[0015] Compared with the prior art, the shredder tool holder assembly has the following advantages:

[0016] 1. One end of the straight pipe body is closed, and the other end is plugged by a detachable plugging member, so that the external thread column and nut used for connecting the connecting frame and the connecting plate are hidden in the closed space, effectively preventing the crushed material from contacting the external thread column and nut, ensuring the stable connection between the connecting plate and the connecting frame, and thus greatly enhancing the structural stability of the shredder tool holder assembly.

[0017] 2. By inserting and pulling out the rubber column, the open end can be closed or opened, which is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional schematic diagram of the shredder tool holder assembly.

[0019] Figure 2 is a connection schematic diagram of the connecting plate and the straight pipe body.

[0020] Figure 3 It is a schematic diagram of the connection between the straight pipe body and the frame body.

[0021] In the figure, 1 is a rotating shaft; 2 is a connecting plate; 2a is an external thread column; 3 is a blade; 4 is a connecting frame; 4a is a straight pipe body; 4b is a frame body; 5 is a nut; 6 is a rubber column; 6a is a convex column. Specific embodiments

[0022] The following are specific embodiments of the present invention and in combination with the accompanying drawings, the technical solutions of the present invention will be further described, but the present invention is not limited to these embodiments. Embodiment 1

[0023] As Figure 1 shown, the cutter holder assembly of this crusher includes a rotating shaft 1 and a circle of connecting plates 2 evenly distributed along the circumference of the rotating shaft 1, and the length of the connecting plate 2 extends along the axial direction of the rotating shaft 1.

[0024] Among them,

[0025] Each connecting plate 2 is abutted and fixed with a blade 3, the length of the blade 3 also extends along the axial direction of the rotating shaft 1, and the blade 3 and the corresponding connecting plate 2 are welded and fixed.

[0026] A connecting frame 4 is fixed on the rotating shaft 1, the connecting frame 4 has a straight pipe body 4a, and the above-mentioned straight pipe bodies 4a are provided between both ends of the connecting plate 2 and the rotating shaft 1. As Figure 2 and Figure 3 shown, the length of the straight pipe body 4a extends along the width direction of the corresponding connecting plate 2. On one side of both ends of the connecting plate 2 close to the rotating shaft 1, an external thread column 2a is integrally formed, and the axis of the external thread column 2a extends along the thickness direction of the corresponding connecting plate 2. A through hole is provided on the straight pipe body 4a, a nut 5 is provided in each straight pipe body 4a, the external thread column 2a passes through the corresponding through hole and is screwed into the corresponding nut 5, and the side wall of the straight pipe body 4a is clamped between the corresponding nut 5 and the corresponding connecting plate 2 to stably connect the straight pipe body 4a and the corresponding connecting plate 2.

[0027] As Figure 1 and Figure 2 shown, both ends of the straight pipe body 4a are a closed end and an open end respectively, and a plugging member for closing the port of the open end is detachably fixed on the open end. One end of the blade 3 and the straight pipe body 4a is closed and the other end is blocked by a detachable plugging member, so that the external thread column 2a and the nut 5 used to connect the connecting frame 4 and the connecting plate 2 are hidden in the closed space, effectively preventing the crushed material from contacting the external thread column 2a and the nut 5, ensuring the stable connection between the connecting plate 2 and the connecting frame 4, and thus greatly enhancing the structural stability of the cutter holder assembly of the crusher.

[0028] Preferably, the straight tube 4a is a rectangular tube to effectively increase the contact area between the straight tube 4a and the connecting plate 2, making the connection between the two more stable. The open end is set away from the corresponding blade 3 to prevent the hand from contacting the blade 3 when tightening the nut 5, thereby reducing safety hazards.

[0029] In this embodiment,

[0030] The structure of the plugging piece is as follows: the plugging piece is a rubber column 6 whose shape and size match the inner hole of the open end. The rubber column 6 is stuck in the open end. At this time, the outer wall of the rubber column 6 and the inner wall of the open end are in close contact to form a seal. The open end can be closed or opened by plugging and pulling out the rubber column 6, which is convenient for use. Further explanation, a convex column 6a is formed on the end face of the rubber column 6 away from the closed end, and the outer diameter of the convex column 6a is smaller than the outer diameter of the rubber column 6. The convex column 6a is provided to provide a gripping point, which further facilitates the plugging and pulling out of the rubber column 6.

[0031] The structure of the connecting frame 4 is as follows: the number of connecting plates 2 is 4, the number of blades 3 is 4, and the number of straight tubes 4a is 8. Figure 1 and Figure 3 As shown, the connecting plate 2 also includes two cross-shaped frames 4b, each of which is penetrated by a connecting hole for the rotating shaft 1 to pass through, the inner wall of the connecting hole is attached to the outer wall of the rotating shaft 1, and the frame 4b is fixedly connected to the rotating shaft 1. The above-mentioned straight tube body 4a is arranged on the four ends of the frame 4b, and the straight tube body 4a and the corresponding end of the frame 4b are arranged vertically. The above-mentioned design is adopted to enable the straight tube body 4a to obtain strong support, effectively enhancing the connection stability between the connecting plate 2 and the straight tube body 4a. Preferably, the frame 4b and the rotating shaft 1 are welded and fixedly connected; the frame 4b and the corresponding straight tube body 4a are an integrated structure. Embodiment 2

[0032] The structure and principle of the second embodiment are basically the same as those of the first embodiment, except that the blocking member is a sealing cover, and one end of the sealing cover is screwed into the opening end.

[0033] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A pulverizer blade assembly, comprising a rotating shaft (1) and a circle of connecting plates (2) uniformly distributed along the circumference of the rotating shaft (1), wherein the length of the connecting plates (2) extends along the axial direction of the rotating shaft (1), a blade (3) is abutted against and fixed on each connecting plate (2), and a connecting frame (4) is fixed on the rotating shaft (1), characterized in that: The connecting frame (4) is provided with a straight tube body (4a), and the straight tube body (4a) is provided between the two ends of the connecting plate (2) and the rotating shaft (1); the length of the straight tube body (4a) extends along the width direction of the corresponding connecting plate (2); both ends of the connecting plate (2) are formed with external threaded columns (2a) on one side close to the rotating shaft (1), and the axis of the external threaded column (2a) extends along the thickness direction of the corresponding connecting plate (2); the straight tube body (4a) is provided with a through hole, and each straight tube body (4a) is provided with a nut (5); the external threaded column (2a) passes through the corresponding through hole and is screwed into the corresponding nut (5), and the side wall of the straight tube body (4a) is clamped between the corresponding nut (5) and the corresponding connecting plate (2); the two ends of the straight tube body (4a) are respectively a closed end and an open end, and a plugging piece for closing the port of the open end is detachably fixed on the open end; the blade (3) and the corresponding connecting plate (2) are welded and fixedly connected.

2. The pulverizer blade assembly according to claim 1, characterized in that: The straight tube body (4a) is of a rectangular tube type.

3. The pulverizer blade assembly according to claim 1 or 2, characterized in that: The blocking piece is a rubber column (6) whose shape and size match the inner hole of the opening end, and the rubber column (6) is clamped in the opening end.

4. The pulverizer blade assembly according to claim 3, characterized in that: A convex column (6a) is formed on the end surface of the rubber column (6) away from the closed end, and the outer diameter of the convex column (6a) is smaller than the outer diameter of the rubber column (6).

5. The pulverizer blade assembly according to claim 1, characterized in that: The blocking piece is a sealing cover, and one end of the sealing cover is screwed into the opening end.

6. The pulverizer blade assembly according to claim 1, characterized in that: The open end is arranged away from the corresponding blade (3).

7. The pulverizer blade assembly according to claim 1, characterized in that: The number of the connecting plates (2) is four, and the connecting plates (2) further include two cross-shaped frames (4b), the frames (4b) are penetrated by connecting holes for the rotating shaft (1) to pass through, and the frames (4b) and the rotating shaft (1) are fixedly connected; the above-mentioned straight tube bodies (4a) are arranged on the four ends of the frames (4b), and the straight tube bodies (4a) and the corresponding ends of the frames (4b) are arranged vertically.

8. The pulverizer blade assembly according to claim 7, characterized in that: The frame body (4b) and the corresponding straight tube body (4a) are an integrated structure.

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