A toothed roll and a crusher

Abstract

This utility model provides a toothed roller and a crusher, including crushing toothed plates, connecting bolts, inclined keys, a roller seat, and a keyway. At least one crushing toothed plate is detachably connected to the roller seat. The outer surface of the roller seat has a keyway with a diameter that decreases radially outwards and remains constant axially. The inclined key is fixedly inserted into the keyway. The fasteners secure the crushing toothed plates to the roller seat by bolting the crushing toothed plates and the inclined keys together. When a portion of the crushing toothed plate on the crusher's toothed roller is damaged, the damaged crushing toothed plate can be replaced simply by removing the connecting bolts of the inclined key and the damaged crushing toothed plate, eliminating the need to remove additional crushing toothed plates, saving time and effort, and making replacement convenient. Each crushing toothed plate contains a bottom key, which can be combined with the inclined key and roller seat to form a double-wedge key self-locking fixing structure, improving connection reliability and preventing the crushing toothed plates from falling off.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery technology, and in particular to a toothed roller and a crusher. Background Technology

[0002] A toothed roll crusher is a mechanical device that uses counter-rotating toothed rolls to split, shear, and crush materials. It is mainly used for crushing medium- to low-hardness brittle materials. The crushing teeth are the core components of a toothed roll crusher. During crushing operations, the crushing teeth are in direct contact with the material. The quality of their structure and material directly affects the crusher's performance and lifespan. Under high-intensity continuous operation, the crushing teeth are subjected to the impact and reaction forces of the material, making them prone to falling off, wearing, and breaking. Timely inspection and replacement are necessary. The service life of the crushing teeth directly affects the replacement frequency and production efficiency.

[0003] Currently, common crusher tooth plates include structures where the tooth plate and tooth holder are connected by bolts, and dovetail groove structures. The reliability of bolted connections depends entirely on the tightening bolts, making the tooth plate prone to falling off. Replacing a dovetail groove structure tooth plate requires disassembling each piece from the end face, replacing the missing piece, and then reassembling the entire plate – a time-consuming and labor-intensive process. Common crusher tooth plates are often integrally cast, with the crushing tooth and tooth holder connected, but the crushing teeth themselves not connected. When crushing larger materials, the crushing teeth are easily broken. Utility Model Content

[0004] The purpose of this utility model embodiment is to provide a toothed roller and a crusher that solves the related technical problems of lifespan and performance mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides a toothed roller, including a roller seat and a crushing toothed plate, wherein at least one crushing toothed plate is detachably connected to the roller seat.

[0006] The outer surface of the roller seat has a keyway, the diameter of which decreases outward along the radial direction and the diameter of which is equal along the axial direction.

[0007] A slanted key, which is fixedly inserted into a keyway;

[0008] Fasteners that secure the crushing toothed plate to the roller seat by bolting the crushing toothed plate and the inclined key together.

[0009] Optionally, the fastener is a connecting bolt, which is inserted into a bolt hole in the crushing tooth plate and then threaded onto a threaded hole in the inclined key, thereby locking the crushing tooth plate onto the roller seat.

[0010] Optionally, each of the crushing tooth plates is also provided with a bottom key on its inner side. The fastening bolts can move the wedge key radially outward, so that the bottom key, the wedge key and the roller seat are combined to form a double wedge key fixing structure.

[0011] Optionally, the outer surface of the crushing tooth plate is provided with both large and small crushing teeth, and the large and small crushing teeth have different heights.

[0012] Optionally, along the circumferential direction of the crushing tooth plate, large and small crushing teeth are arranged alternately on the crushing tooth holder.

[0013] Optionally, the tooth height of the small breaking tooth is half or less of the tooth height of the large breaking tooth.

[0014] Optionally, the large and small breaking teeth are connected by a connecting rib.

[0015] Optionally, the large crushing tooth is of the eagle beak type, crushing eagle claw type, or duckbill type.

[0016] Optionally, the crushing toothed plate in the circumferential direction of the roller seat has several units, and the several crushing toothed plates form a closed circular structure around the roller seat with the roller seat as the center.

[0017] A crusher comprising the aforementioned toothed roller.

[0018] One of the above technical solutions has the following advantages or beneficial effects:

[0019] In this embodiment of the utility model:

[0020] 1. When the crusher's toothed rollers are partially damaged, the crushing toothed plates can be replaced simply by removing the damaged crushing toothed plates and the connecting bolts of the inclined keys. There is no need to remove extra crushing toothed plates, which saves time and effort and makes replacement convenient.

[0021] 2. Each crushing toothed plate contains a bottom key, which can be combined with the inclined key and roller seat to form a double wedge key self-locking fixing structure, improving connection reliability and making the crushing toothed plate less likely to fall off.

[0022] 3. Large and small crushing teeth are arranged alternately on the tooth base. The tooth height of the small crushing teeth is half or less of the tooth height of the large crushing teeth, which can improve the biting ability of the crushing teeth when crushing large pieces of material.

[0023] 4. The large and small crushing teeth are connected by connecting ribs, which can improve the strength of the crushing teeth and make them less prone to breakage. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the toothed roller provided in an embodiment of the present utility model;

[0025] Figure 2 This is a schematic diagram of the structure of the crushing toothed plate provided in an embodiment of the present utility model;

[0026] Figure 3 A schematic diagram of the oblique key provided in an embodiment of this utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the roller seat provided in an embodiment of the present utility model;

[0028] Figure 5 This is a schematic diagram of the four crushing toothed plates assembled in this embodiment. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0030] This utility model embodiment provides a toothed roller. The toothed roller designed in this way is characterized by the use of a double-wedge key self-locking unequal-height graded crushing toothed plate, such as... Figure 1 The toothed roller structure shown includes crushing tooth plates 1, connecting bolts 2, inclined keys 3, roller seats 4, and keyways 5. Among these, the crushing tooth plates 1 are the core components of the toothed roller crusher. During crushing operations, the crushing teeth are in direct contact with the material, and the quality of their structure and materials directly affects the crusher's performance and lifespan. Figure 2 The shown crushing tooth plate 1 includes: a crushing tooth base 11, a large crushing tooth 12, a small crushing tooth 13, and a bottom key 14; the roller base 4 has a similar circular columnar structure to a traditional roller base 4, and at least one crushing tooth plate 1 is detachably connected to the roller base 4; a keyway 5 is formed on the outer surface of the roller base 4, the diameter of the keyway 5 decreases outward along the radial direction, and the diameter of the keyway 5 is equal along the axial direction; a slanted key 3 is fixedly inserted into the keyway 5; fasteners fix the crushing tooth plate 1 to the roller base 4 by bolting the crushing tooth plate 1 and the slanted key 3 together. A design of four fan-shaped crushing tooth plates evenly distributed around the circumference is adopted, and each slanted key 3 is integrated into a trapezoid, forming a high-precision insertion fit with the roller base 4.

[0031] The fastener in this utility model is a connecting bolt 2, but it is not limited to the connecting bolt 2 and can be other structures. Furthermore, the crushing tooth plate 1 in the circumferential direction of the roller seat 4 has several units, and these several crushing tooth plates 1 form a closed circular structure surrounding the roller seat 4. This embodiment takes the connecting bolt 2 and four crushing tooth plates 1 surrounding the roller seat 4 as an example. Figure 5This is a schematic diagram of the four crushing tooth plates 1 assembled in this embodiment. The connecting bolts 2 are inserted into the bolt holes on the crushing tooth plates 1 and then threaded onto the inclined key 3 and threaded into the threaded hole, thereby locking the crushing tooth plates 1 onto the roller seat 4.

[0032] like Figure 1 and 3 As shown, each crushing tooth plate 1 has a bottom key 14 on its inner side, and each crushing tooth plate 1 contains two bottom keys 14. The crushing tooth seat 11 has four bolt holes, which can be combined with the inclined key 3, the roller seat 4, and the connecting bolt 2 to form a double wedge key fixing structure. One side of the inclined key 3 is an inclined edge with an angle, and the corresponding position of the roller seat 4 is also an inclined edge with the same angle. Tightening the connecting bolt 2 can move the inclined key 3 upward (i.e., move it radially), so that the two bottom keys 14, the inclined key 3, and the roller seat 4 can be combined to form a double wedge key fixing structure.

[0033] like Figure 5 As shown, large crushing teeth 12 and small crushing teeth 13 are simultaneously provided on the outer surface of the crushing tooth plate 1, with different heights. There are a total of 4 crushing tooth plates 1 in the circumferential direction, and each crushing tooth plate 1 is combined with the roller seat 4 by a wedge key 3 to form a double wedge key self-locking fixing structure. In the circumferential direction, the large crushing teeth 12 and small crushing teeth 13 are arranged alternately on the crushing tooth seat 11. The large crushing teeth 12 are in the shape of eagle beak, eagle claw, duckbill, etc. Taking the eagle beak shape as an example, the tooth height of the small crushing teeth 13 is half or less of the tooth height of the large crushing teeth 12. In the circumferential direction, the large crushing teeth 12 and small crushing teeth 13 are connected by connecting ribs, which can improve the strength of the crushing teeth and make them less prone to breakage. The design combines a large, beak-shaped crushing tooth 12 with auxiliary small crushing teeth 13. The large crushing tooth 12 (50mm high) has a 15° bend at the front end to enhance the splitting effect on materials. The small crushing teeth 13 (≤25mm high) are conical in shape to fill the gaps in the crushing tooth plate 1, preventing fine particles from escaping. EDEM discrete element simulation verification shows that this layout increases crushing efficiency by 22% and reduces over-crushing rate to below 8%. The diagram shows a double row of teeth along the length, but single or multiple rows can be designed to adjust the structure and dimensions according to length requirements. A unique double-wedge key self-locking structure: the wedge-shaped fit between the inclined key 3 and the inclined groove 5 of the roller seat 4 generates radial compressive stress under the preload of high-strength bolts, achieving zero-gap fixing. Compared to traditional bolt direct connection methods, this structure significantly improves shear resistance, effectively preventing axial movement of the crushing tooth plate 1 when crushing hard materials.

[0034] A crusher is also proposed, which can be composed of a transmission device, a frame, crushing rollers, a mechanical spring device, and a linkage mechanism. These mechanisms can adopt existing technologies. In addition, a wear-resistant alloy toothed roller and a high-strength crushing chamber design are used. The discharge particle size can be precisely controlled by adjusting the roller spacing through hydraulic technology. The toothed rollers are the toothed rollers used in this design. Each crushing tooth plate 1 has two bottom keys 14, and the crushing tooth seat 11 has four bolt holes, which can be combined with the inclined key 3, the roller seat 4, and the connecting bolts 2 to form a double wedge key fixing structure.

[0035] One side of the inclined key 3 is an angled edge, and the corresponding position of the roller seat 4 is also an angled edge. Tightening the connecting bolts allows the inclined key 3 to move upwards. As the connecting bolts are tightened, the inclined key 3 fixes the bottom key 14 and the roller seat 4, thereby fixing the crushing tooth plate 1 to the roller seat 4. The two bottom keys 14, the inclined key 3, and the roller seat 4 combine to form a double wedge key fixing structure. The crushing tooth plate 1 cooperates with the roller seat 11. There are a total of 4 crushing tooth plates 1 in the circumferential direction. Each crushing tooth plate 1 contains 2 bottom keys 14, which are combined with the roller seat 4 through the inclined key 3 to form a double wedge key self-locking fixing structure. The crushing tooth plate 1 has large crushing teeth 12 and small crushing teeth 13. The large crushing teeth 12 are shaped like eagle beaks, eagle claws, duck beaks, etc. The tooth height of the small crushing teeth 13 is half or less of the tooth height of the large crushing teeth 12, which improves the biting ability of the crushing teeth when crushing large pieces of material.

[0036] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A toothed roll comprising a roll seat of the toothed roll, characterized in that, Also includes: Crushing toothed plate, at least one crushing toothed plate is detachably connected to the roller seat; The outer surface of the roller seat has a keyway, the diameter of which decreases outward along the radial direction and the diameter of which is equal along the axial direction. A slanted key, which is fixedly inserted into a keyway; Fasteners that secure the crushing toothed plate to the roller seat by bolting the crushing toothed plate and the inclined key together.

2. The toothed roll according to claim 1, characterized in that, The fastener is a connecting bolt, which is inserted into the bolt hole opened on the crushing tooth plate and then threaded to the threaded hole opened on the inclined key, thereby locking the crushing tooth plate on the roller seat.

3. The toothed roll according to claim 2, characterized in that, Each of the crushing tooth plates is also provided with a bottom key on its inner side. The fastening connecting bolts can make the inclined key move outward along the radial direction, so that the bottom key, the inclined key and the roller seat are combined to form a double wedge key fixing structure.

4. The toothed roll according to claim 3, characterized in that, The outer surface of the crushing tooth plate is provided with both large and small crushing teeth, and the large and small crushing teeth have different heights.

5. The toothed roll according to claim 4, characterized in that, Along the circumferential direction of the crushing tooth plate, large and small crushing teeth are arranged alternately on the crushing tooth holder.

6. The toothed roll according to claim 4, characterized in that, The height of the small breaking tooth is half or less of the height of the large breaking tooth.

7. The toothed roll according to claim 4, characterized in that, The large and small breaking teeth are connected by connecting ribs.

8. The toothed roll of claim 4 wherein, The large crushing teeth are of the eagle beak type, crushing eagle claw type, or duckbill type.

9. The toothed roll of claim 1 wherein, The crushing toothed plate in the circumferential direction of the roller seat has several units, and the several crushing toothed plates form a closed circular structure around the roller seat with the roller seat as the center.

10. A crusher characterized in that, Includes the toothed roller as described in any one of claims 1-9.

Images