Tooth roller

Abstract

The utility model relates to the technical field of double-geared roller crushers, in particular to a geared roller. The tooth roller comprises an annular fixing frame, a plurality of arc-shaped tooth plates and a fixing assembly, the inner side of each arc-shaped tooth plate is an arc-shaped first fixing face, crushing teeth are arranged on the outer side of each arc-shaped tooth plate, the outer side of each annular fixing frame is an arc-shaped second fixing face, and the inner side of each annular fixing frame is an arc face. The multiple arc-shaped toothed plates are arranged on the annular fixing frame in the circumferential direction of the annular fixing frame, and the first fixing face is attached to the second fixing face. Due to the fact that the outer side of the annular fixing frame is the arc-shaped second fixing face, the inner side of the arc-shaped toothed plate is the arc-shaped first fixing face, and the inner side of the arc-shaped toothed plate is the arc-shaped face, when the annular fixing frame and the arc-shaped toothed plate are machined, the machining mode is changed from original six-face milling to outer circle turning, and the inner side face of the arc-shaped toothed plate is changed from a plane to the arc-shaped face. And a plurality of arc-shaped toothed plates can be turned at the same time through cambered surface machining, so that the machining efficiency is greatly improved, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of double-tooth roll crushers, and particularly relates to a toothed roll. Background Art

[0002] The installation structures of the crushing teeth of double-tooth roll crushers can be divided into tooth plate type, tooth ring type, tooth cap type, tooth crown type, tooth tile type, inlaid type, pick type, combined type, etc.

[0003] The existing toothed roll adopting the tooth plate type installation structure includes a hexagonal fixing frame and a tooth plate. The lower surface of the tooth plate is a plane, and through holes and counterbores communicating with each other are formed in the tooth plate. A T-shaped groove is formed in the outer side surface of the hexagonal fixing frame, a bolt is arranged in the strip-shaped groove, and the bolt passes through the through hole in the tooth plate and is screwed with a fixing nut, and the fixing nut is located in the counterbore.

[0004] For the outer side surface of the above-mentioned fixing frame and the hexagonal fixing frame, six planes of the hexagon need to be machined, and the lower surface of the tooth plate is milled. This results in a long processing cycle and high cost for the fixing frame and the tooth plate. Moreover, since the lower surface of the tooth plate is a plane, the thickness of the tooth plate is uneven and the overall thickness is relatively large. Therefore, usually, a T-shaped groove is formed in the outer side surface of the hexagonal fixing frame and a counterbore is formed in the outer side surface of the tooth plate, so that the sum of the thickness of the fixing frame and the thickness of the tooth plate between the bolt head and the nut is smaller, and then the tooth plate is fixed. However, this fixing method from the inside to the outside causes the nut to be installed in the counterbore. But after the tooth plate is used for a period of time, the counterbore will be filled with coal slime. Before disassembling the bolt, the coal slime in the counterbore must be cleaned up before the fixing nut can be disassembled, which is time-consuming and laborious and the tooth plate replacement efficiency is low. Summary of the Utility Model

[0005] (1) The problem to be solved by the utility model is: how to improve the processing efficiency of the fixing frame and the tooth plate and improve the efficiency of replacing the tooth plate.

[0006] (2) Technical Solution

[0007] A toothed roll provided by the utility model includes an annular fixing frame, a plurality of arc-shaped tooth plates and fixing components;

[0008] The inner side of the arc-shaped tooth plate is an arc-shaped first fixing surface, and the outer side is provided with crushing teeth;

[0009] The outer side of the annular fixing frame is an arc-shaped second fixing surface, and the inner side is an arc surface;

[0010] The plurality of arc-shaped tooth plates are arranged on the annular fixing frame along the circumferential direction of the annular fixing frame, and the first fixing surface is attached to the second fixing surface;

[0011] Each arc-shaped tooth plate is connected to the annular fixing frame through at least one of the fixing components;

[0012] The fixing component includes a first through hole formed in the arc-shaped tooth plate and a second through hole formed in the annular fixing frame. The fixing component further includes a bolt and a fixing nut;

[0013] The bolt sequentially passes through the first through hole and the second through hole and is screwed with the fixing nut.

[0014] According to an embodiment of the present invention, the tooth roller includes a limiting member for restricting the axial sliding of the arc-shaped tooth plate along the annular fixing frame.

[0015] According to an embodiment of the present invention, the limiting member includes a flat key, and each arc-shaped tooth plate is connected to the annular fixing frame through at least one flat key.

[0016] According to an embodiment of the present invention, a limiting groove is formed on the first fixing surface of the arc-shaped tooth plate, one end of the flat key is located in the limiting groove, and the other end is fixedly connected to the second fixing surface of the annular fixing frame.

[0017] According to an embodiment of the present invention, a limiting groove is formed on the first fixing surface of the arc-shaped tooth plate, and a key groove is formed on the second fixing surface of the annular fixing frame. One end of the flat key is located in the limiting groove, and the other end is located in the key groove.

[0018] According to an embodiment of the present invention, a counterbore is formed on the outer side surface of the arc-shaped tooth plate, and the counterbores correspond to the first through holes one by one. The length of the counterbore is greater than the aperture of the first through hole.

[0019] According to an embodiment of the present invention, the aperture of the first through hole is equal to the aperture of the second through hole, and the side surface of the bolt contacts the side wall of the second through hole.

[0020] According to an embodiment of the present invention, the fixing component includes a locking nut and a spring washer. After the bolt sequentially passes through the first through hole, the second through hole and the spring washer, it is sequentially screwed with the fixing nut and the locking nut.

[0021] According to an embodiment of the present invention, the adjacent side surfaces of every two arc-shaped tooth plates are in contact with each other.

[0022] According to an embodiment of the present invention, the annular fixing frame includes a connecting shaft and two circular ring plates. The two circular ring plates are symmetrically installed at both ends of the connecting shaft. The connecting shaft is installed inside the circular ring plates, and a plurality of the second through holes are formed on each circular ring plate;

[0023] A plurality of relief areas are provided on the circular ring plate, and both the lock nut and the fixing nut are located within the relief areas.

[0024] Advantages of the present utility model:

[0025] Since the outer side of the annular fixing frame is an arc-shaped second fixing surface, and the inner side of the arc-shaped tooth plate is an arc-shaped first fixing surface with an arc-shaped inner side, when machining the annular fixing frame and the arc-shaped tooth plate, the machining method changes from the original milling of six surfaces to turning the outer circle. The inner side surface of the arc-shaped tooth plate changes from a plane to an arc surface. The arc surface machining can turn multiple arc-shaped tooth plates simultaneously, greatly improving the machining efficiency and reducing the cost.

[0026] Since the thickness of the arc-shaped tooth plate is reduced, the weight of a single arc-shaped tooth plate is reduced, further reducing the cost.

[0027] Since the inner side surface of the provided arc-shaped tooth plate is an arc surface, the thickness from the outer side surface to the inner side surface of the arc-shaped tooth plate is uniform and the thickness of the arc-shaped tooth plate is relatively thin. Both the inner and outer sides of the annular fixing frame are arc surfaces, and the thicknesses of both the annular fixing frame and the arc-shaped tooth plate are relatively thin and uniform at each location. Therefore, the bolt can sequentially penetrate through the first through hole and the second through hole from the outside to the inside to be connected to the fixing nut to install the arc-shaped tooth plate and the annular fixing frame, changing the installation direction of the bolt. The fixing nut is arranged on the inner side of the annular fixing frame. Therefore, when disassembling the bolt, the fixing nut can be directly turned to disassemble, which is time-saving and labor-saving, and improves the replacement efficiency of the arc-shaped tooth plate. Description of the Drawings

[0028] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0029] Figure 1 It is a cross-sectional view of the tooth roller provided by the embodiment of the present utility model;

[0030] Figure 2 It is a three-dimensional assembly view of the tooth roller provided by the embodiment of the present utility model.

[0031] Reference numerals: 1, annular fixing frame; 101, connecting shaft; 102, circular ring plate; 2, arc-shaped tooth plate; 3, flat key; 4, bolt; 5, fixing nut; 6, lock nut. Specific Embodiments

[0032] The technical solution of the present utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative work shall fall within the protection scope of the present utility model.

[0033] As Figure 1 - Figure 2 shown, an embodiment of the present utility model provides a toothed roll, which includes an annular fixing frame 1, a plurality of arc-shaped tooth plates 2 and a fixing component;

[0034] The inner side of the arc-shaped tooth plate 2 is an arc-shaped first fixing surface, and the outer side is provided with crushing teeth;

[0035] The outer side of the annular fixing frame 1 is an arc-shaped second fixing surface, and the inner side is an arc surface;

[0036] A plurality of arc-shaped tooth plates 2 are arranged on the annular fixing frame 1 along the circumferential direction of the annular fixing frame 1, and the first fixing surface is attached to the second fixing surface;

[0037] Each arc-shaped tooth plate 2 is connected to the annular fixing frame 1 through at least one fixing component;

[0038] The fixing component includes a first through hole opened on the arc-shaped tooth plate 2 and a second through hole opened on the annular fixing frame 1. The fixing component further includes a bolt 4 and a fixing nut 5;

[0039] The bolt 4 sequentially passes through the first through hole and the second through hole and is screwed with the fixing nut 5.

[0040] Specifically, since the outer side of the annular fixing frame 1 is an arc-shaped second fixing surface, the inner side of the arc-shaped tooth plate 2 is an arc-shaped first fixing surface, and the inner side is an arc surface. Therefore, when processing the annular fixing frame 1 and the arc-shaped tooth plate 2, the processing method changes from the original milling of six surfaces to turning the outer circle. The inner side surface of the arc-shaped tooth plate 2 changes from a plane to an arc surface. The arc surface processing can turn multiple arc-shaped tooth plates 2 at the same time, greatly improving the processing efficiency and reducing the cost.

[0041] Since the thickness of the arc-shaped tooth plate 2 is reduced, the weight of a single arc-shaped tooth plate 2 is reduced, further reducing the cost.

[0042] Since the inner side of the arc-shaped tooth plate 2 is an arc surface, the thickness from the outer side to the inner side of the arc-shaped tooth plate 2 is uniform and relatively thin, and both the inner and outer sides of the annular fixing frame 1 are arc surfaces. The thickness of the annular fixing frame 1 and the thickness of the arc-shaped tooth plate 2 are both relatively thin and uniform at each place. Therefore, the bolt 4 can penetrate through the first through hole and the second through hole from the outside to the inside in sequence to be connected with the fixing nut 5 to install the arc-shaped tooth plate 2 and the annular fixing frame 1, changing the installation direction of the bolt 4. The fixing nut 5 is arranged inside the annular fixing frame 1. Therefore, when disassembling the bolt 4, the fixing nut 5 can be directly turned to disassemble, which is time-saving and labor-saving, and improves the replacement efficiency of the arc-shaped tooth plate 2.

[0043] According to an embodiment of the present invention, the toothed roll includes a limiting member, and the limiting member is used to limit the axial sliding of the arc-shaped tooth plate 2 along the annular fixing frame 1.

[0044] By providing the limiting member, the arc-shaped tooth plate 2 can be prevented from axially sliding along the annular fixing frame 1. Furthermore, the arc-shaped tooth plates 2 on the two toothed rolls will not have problems such as tooth collision and interference, avoiding damage to the toothed roll and improving the service life of the double-toothed roll crusher.

[0045] According to an embodiment of the present invention, the limiting member includes a flat key 3, and each arc-shaped tooth plate 2 is connected to the annular fixing frame 1 through at least one flat key 3.

[0046] By providing at least one flat key 3 between each arc-shaped tooth plate 2 and the annular fixing frame 1, each arc-shaped tooth plate 2 can be limited to prevent the arc-shaped tooth plate 2 from axially sliding along the annular fixing frame 1.

[0047] According to an embodiment of the present invention, a limiting groove is provided on the first fixing surface of the arc-shaped tooth plate 2, one end of the flat key 3 is located in the limiting groove, and the other end is fixedly connected to the second fixing surface of the annular fixing frame 1.

[0048] By providing a limiting groove on the arc-shaped tooth plate 2, when installing the arc-shaped tooth plate 2, after aligning the limiting groove and the flat key 3, the first fixing surface of the arc-shaped tooth plate 2 and the second fixing surface of the annular fixing frame 1 can be fitted together.

[0049] According to an embodiment of the present invention, a limiting groove is provided on the first fixing surface of the arc-shaped tooth plate 2, a key groove is provided on the second fixing surface of the annular fixing frame 1, one end of the flat key 3 is located in the limiting groove, and the other end is located in the key groove. The sum of the thickness of the key groove and the thickness of the limiting groove is 0.03 - 1 millimeter larger than the thickness of the flat key 3.

[0050] By providing a key groove on the second fixing surface of the annular fixing frame 1, the flat key 3 can be placed in it. And due to the provided key groove, after the flat key 3 is worn after being used for a period of time, it is convenient to replace, and the stability of the position between the arc-shaped tooth plate 2 and the annular fixing frame 1 can be always ensured.

[0051] Certainly, in this embodiment, a third through hole is provided on the side of the keyway away from the limit groove. A fixing plate with a fourth through hole is fixed on the inner side surface of the annular fixing frame 1. The aperture of the fourth through hole is smaller than that of the third through hole. At this time, the thickness of the keyway is greater than the thickness of the flat key 3. A screw rod is screwed on the flat key 3. One end of the screw rod passes through the third through hole and is fixedly connected with a connecting rod. The connecting rod passes through the fourth through hole and is connected with a handle. By turning the handle, the screw rod is driven to rotate. Under the combined action of the keyway and the screw rod, the flat key 3 moves along the length direction of the screw rod until a part of it enters the limit groove, and then the arc-shaped tooth plate 2 and the annular fixing frame 1 can be limited.

[0052] When installing the arc-shaped tooth plate 2, first, by turning the screw rod, the flat key 3 is retracted into the keyway, which enables the arc-shaped tooth plate 2 to slide on the annular fixing frame 1. After reaching the specified position, then turn the screw rod again, so that the flat key 3 rises and protrudes from the second fixing surface of the annular fixing frame 1 under the dual action of the screw rod and the keyway, and enters the limit groove opened on the first fixing surface of the arc-shaped tooth plate 2, thereby playing a role in limiting the arc-shaped tooth plate 2 and the annular fixing frame 1. This design method can make the installation of the arc-shaped tooth plate 2 more time-saving and labor-saving. Its purpose does not deviate from the design concept of the present invention. Therefore, it should belong to the protection scope of the present invention.

[0053] According to an embodiment of the present invention, a counterbore is provided on the outer side surface of the arc-shaped tooth plate 2. The counterbore corresponds to the first through hole one by one, and the length of the counterbore is greater than the aperture of the first through hole. Each counterbore corresponds to a second through hole and a first through hole.

[0054] By providing a plurality of counterbores, it can prevent the head of the bolt 4 from protruding from the outer side surface of the arc-shaped tooth plate 2, so that when the tooth roller breaks an object, the head of the bolt 4 is always subjected to a squeezing force, which improves the service life of the bolt 4.

[0055] The shape of the counterbore is adapted to the shape of the head of the bolt 4. The counterbore can limit the bolt 4 so that it will not rotate around its own axis, which can make it more labor-saving when screwing the fixing nut 5 and the locking nut 6. The bolt 4 is a T-shaped bolt.

[0056] According to an embodiment of the present invention, the aperture of the first through hole is equal to the aperture of the second through hole, and the side surface of the bolt 4 contacts the side wall of the second through hole.

[0057] By setting the aperture of the first through hole to be equal to the aperture of the second through hole, and the side surface of the bolt 4 contacts the side wall of the second through hole, after the bolt 4 is installed, it can not only fit and fix the first fixing surface of the arc-shaped tooth plate 2 and the second fixing surface of the annular fixing frame 1, but also play a role in preventing the arc-shaped tooth plate 2 from being axially and circumferentially limited along the annular fixing frame 1.

[0058] Of course, in this embodiment, the aperture of the first through-hole and the aperture of the second through-hole can also be unequal.

[0059] According to an embodiment of the present invention, the fixing assembly includes a lock nut 6 and a spring washer. After the bolt 4 sequentially passes through the first through-hole, the second through-hole and the spring washer, the bolt 4 is sequentially screwed with the fixing nut 5 and the lock nut 6. The bolt 4 is movably connected to the first through-hole, the second through-hole and the spring washer.

[0060] By providing the spring washer and the lock nut 6, the possibility of the bolt 4 loosening can be reduced, thereby improving the stability of the fixation of the arc-shaped tooth plate 2 and the annular fixing frame 1.

[0061] According to an embodiment of the present invention, the adjacent side surfaces of every two arc-shaped tooth plates 2 are in contact with each other.

[0062] The adjacent side surfaces of every two arc-shaped tooth plates 2 being in contact with each other can prevent the arc-shaped tooth plate 2 from slightly moving circumferentially around the annular fixing frame 1, ensuring the stability of the fixation of the arc-shaped tooth plate 2.

[0063] According to an embodiment of the present invention, the annular fixing frame 1 includes a connecting shaft 101 and two circular ring plates 102. The two circular ring plates 102 are symmetrically installed at both ends of the connecting shaft 101. The connecting shaft 101 is installed inside the circular ring plate 102. A plurality of second through-holes are provided on each circular ring plate 102; the axis of the connecting shaft 101 coincides with the axis of the circular ring plate 102.

[0064] A plurality of relief areas are provided on the circular ring plate 102. The relief areas are evenly spaced around the axis of the circular ring plate 102. The lock nut 6 and the fixing nut 5 are both located in the relief areas.

[0065] The provision of the relief areas can reduce the weight while reducing the production cost, and facilitate the installation of the lock nut 6 and the fixing nut 5.

[0066] Specifically, after the arc-shaped tooth plate 2 has been used for a period of time, even if the counterbore is filled with slime, since the installation direction of the bolt 4 has changed and the fixing nut 5 and the lock nut 6 are not located in the counterbore, it is possible to disassemble the fixing nut 5 without cleaning the slime in the counterbore, saving time and effort and improving the replacement efficiency of the arc-shaped tooth plate 2.

[0067] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0068] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the connection inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations. In addition, in the description of the present utility model, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0069] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A toothed roller, characterized in that: It comprises an annular fixing frame (1), a plurality of arc-shaped tooth plates (2) and a fixing assembly; The inner side of the arc-shaped tooth plate (2) is an arc-shaped first fixing surface, and the outer side is provided with crushing teeth; The outer side of the annular fixing frame (1) is a second arc-shaped fixing surface, and the inner side is a curved surface; A plurality of arc-shaped tooth plates (2) are arranged on the annular fixing frame (1) along the circumference of the annular fixing frame (1), and the first fixing surface is in contact with the second fixing surface; Each of the arc-shaped toothed plates (2) is connected to the annular fixing frame (1) via at least one fixing assembly; The fixing assembly comprises a first through hole formed on the arc-shaped toothed plate (2) and a second through hole formed on the annular fixing frame (1), and the fixing assembly further comprises a bolt (4) and a fixing nut (5); The bolt (4) passes through the first through hole and the second through hole in sequence and is threadedly connected to the fixing nut (5); The fixing assembly comprises a locking nut (6) and a spring washer, and the bolt (4) passes through the first through hole, the second through hole and the spring washer in sequence, and is then threadedly connected to the fixing nut (5) and the locking nut (6) in sequence; The annular fixing frame (1) comprises a connecting shaft (101) and two annular plates (102), wherein the two annular plates (102) are symmetrically mounted at two ends of the connecting shaft (101), the connecting shaft (101) is mounted inside the annular plates (102), and each of the annular plates (102) is provided with a plurality of the second through holes; The annular plate (102) is provided with a plurality of clearance areas, and the locking nut (6) and the fixing nut (5) are both located in the clearance areas.

2. A toothed roller according to claim 1, characterized in that: The toothed roller comprises a limiting member, and the limiting member is used to limit the axial sliding of the arc-shaped toothed plate (2) along the annular fixing frame (1).

3. A toothed roller according to claim 2, characterized in that: The limiting member comprises a flat key (3), and each of the arc-shaped toothed plates (2) is connected to the annular fixing frame (1) via at least one of the flat keys (3).

4. A toothed roller according to claim 3, characterized in that: The first fixing surface of the arc-shaped toothed plate (2) is provided with a limiting groove, one end of the flat key (3) is located in the limiting groove, and the other end thereof is fixedly connected to the second fixing surface of the annular fixing frame (1).

5. A toothed roller according to claim 3, characterized in that: The first fixing surface of the arc-shaped toothed plate (2) is provided with a limiting groove, the second fixing surface of the annular fixing frame (1) is provided with a key groove, one end of the flat key (3) is located in the limiting groove, and the other end is located in the key groove.

6. A toothed roller according to claim 1, characterized in that: A countersunk hole is provided on the outer side surface of the arc-shaped tooth plate (2), the countersunk hole corresponds to the first through hole one by one, and the length of the countersunk hole is greater than the aperture of the first through hole.

7. A toothed roller according to claim 1, characterized in that: The diameter of the first through hole is equal to the diameter of the second through hole, and the side surface of the bolt (4) contacts the side wall of the second through hole.

8. A toothed roller according to claim 1, characterized in that: The sides of each two adjacent arc-shaped tooth plates (2) that are close to each other fit in contact with each other.

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