Split type tooth ring, tooth cap and cutting tooth structure

Abstract

The invention relates to the technical field of tooth roller crushers, in particular to a split type tooth ring, tooth cap and cutting tooth structure. A split type tooth ring, tooth cap and cutting tooth structure comprises a crushing shaft and is characterized in that the crushing shaft is connected with a tooth ring through a key shaft, a main body of the tooth ring is of an annular structure, two or more sets of protruding structures are distributed on the periphery of the tooth ring, the protruding structures are connected with a plurality of tooth caps through fixing screw assemblies, and one side of the upper portion of each tooth cap is connected with a cutting tooth. Compared with the prior art, the split type tooth ring, tooth cap and cutting tooth structure is provided, the tooth ring, the tooth cap and the cutting tooth are designed in a split mode, and the structure is easy to detach and can be replaced regularly; a split structure is adopted, the front contact face of the gear ring and the gear cap is pressed by pretightening force, displacement is avoided in the crushing process, and the connection reliability is improved.

Description

Technical Field

[0001] This invention relates to the field of toothed roller crusher technology, specifically a split toothed ring, toothed cap and cutting tooth structure. Background Technology

[0002] Currently, in double-toothed roller crushers, the crushing teeth, as the main crushing load-bearing components, require a very robust load-bearing design. As easily worn parts, they need to be replaced regularly or repaired by welding on-site. For many on-site operating conditions, welding repair is not possible, so only a structural design with high load-bearing capacity and easy disassembly can be adopted. Therefore, designing a new split tooth ring, tooth cap, and cutting tooth structure is particularly important. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, this invention provides a split toothed ring, toothed cap, and cutting tooth structure. The toothed ring, toothed cap, and cutting tooth are designed as separate parts, which are easy to disassemble and can be replaced periodically. With the split structure, the front contact surfaces of the toothed ring and toothed cap are pressed by pre-tightening force, and there is no displacement during the crushing process, which increases the reliability of the connection.

[0004] To achieve the above objectives, a split-type toothed ring, toothed cap, and cutting tooth structure is designed, including a crushing shaft. The toothed ring is connected to the crushing shaft via a key shaft. The main body of the toothed ring is a ring-shaped structure, and two or more sets of protruding structures are distributed on the outer periphery of the toothed ring. Several toothed caps are connected to the protruding structures via a fixing screw assembly, and cutting teeth are connected to one side of the upper part of the toothed caps.

[0005] The protrusions on the toothed ring have a mating surface facing the direction of rotation of the crushing shaft with the center line passing through the axis of the crushing shaft at an angle α, the angle α being in the range of 0° to 30°.

[0006] The lower part of the tooth cap is a recessed structure, and the recessed structure cooperates with the outer connecting part of the tooth ring. The upper part of the tooth cap is provided with a mounting hole, and a cutting tooth is connected in the mounting hole. The cutting tooth is fixed in the mounting hole by a fixing pin.

[0007] The rear mating surface of the toothed ring, which connects the protruding structure to the recessed structure of the toothed cap, and the front contact surface are provided with an included angle b, the included angle b being in the range of 0° to 30°.

[0008] The head of the cutting tooth is a conical structure, and the tail of the cutting tooth is an annular groove structure, with a fixing pin inserted into the annular groove at the tail of the cutting tooth.

[0009] An open bushing is fitted between the cutting tooth and the mounting hole, and a top head for disassembling the cutting tooth is provided at the tail of the cutting tooth.

[0010] The fixing screw assembly includes a fixing screw, a pressure ring sleeve, and a nut. The head of the fixing screw is located on one side of the lower part of the toothed cap. The shank of the fixing screw passes through one side of the lower part of the toothed cap, the protruding structure on the toothed ring, and the other side of the lower part of the toothed cap and is threadedly connected to the nut. A pressure ring sleeve is fitted between the shank of the fixing screw and the other side of the lower part of the toothed cap.

[0011] Compared with the prior art, the present invention provides a split toothed ring, toothed cap and cutting tooth structure, which is designed as a split structure. This structure is easy to disassemble and can be replaced periodically. With the split structure, the front contact surface of the toothed ring and toothed cap is pressed by pre-tightening force, and there is no displacement during the crushing process, which increases the reliability of the connection. Attached Figure Description

[0012] Figure 1 This is a top view of the structure of the present invention.

[0013] Figure 2 for Figure 1 Sectional view along line AA.

[0014] Figure 3 for Figure 2 Sectional view along the CC direction.

[0015] Figure 4 This is a side view of the structure of the present invention.

[0016] See Figure 2 1 is a toothed ring, 1-1 is a raised structure, 2 is a toothed cap, 3 is a fixing screw, 4 is a pressure ring sleeve, 5 is a nut, 6 is a cutting tooth, 7 is a fixing pin, 8 is a top head, 9 is an open shaft sleeve, and 10 is a crushing shaft. Detailed Implementation

[0017] The present invention will now be further described with reference to the accompanying drawings.

[0018] like Figures 1 to 4 As shown, the crushing shaft 10 is connected to the toothed ring 1 via a key shaft. The main body of the toothed ring 1 is a ring structure. Two or more sets of protrusion structures 1-1 are distributed on the periphery of the toothed ring 1. Several tooth caps 2 are connected to the protrusion structures 1-1 via a fixing screw assembly. A cutting tooth 6 is connected to one side of the upper part of the tooth cap 2.

[0019] The protrusions of the protrusions 1-1 distributed on the toothed ring 1 have a mating surface facing the direction of rotation of the crushing shaft 10 with the center line passing through the axis of the crushing shaft 10 at an angle α, the range of which is 0°~30°. When the cutting tooth 6 crushes the material and is subjected to tangential reaction force, the tooth cap 2 will obtain a component force towards the axis, so that the tooth cap 2 can be better fixed on the toothed ring 1 and the crushing load is transmitted to the protrusions 1-1 of the toothed ring 1.

[0020] The lower part of the tooth cap 2 is a recessed structure, and the recessed structure cooperates with the outer connecting part of the tooth ring 1. The upper part of the tooth cap 2 is provided with a mounting hole, and a cutting tooth 6 is connected in the mounting hole. The cutting tooth 6 is fixed in the mounting hole by a fixing pin 7.

[0021] The rear mating surface of the toothed ring 1, which connects the protruding structure 1-1 to the recessed structure of the toothed cap 2, and the front contact surface are provided with an included angle b, the included angle b being in the range of 0°~30°; this makes the root region of the protruding structure 1-1 of the toothed ring 1 wider than the top region, which has a greater load-bearing capacity and facilitates the assembly and disassembly of the toothed cap 2.

[0022] The toothed cap 2 and the toothed ring 1 are separate structures. The inner side of the toothed cap 2 is fitted with a corresponding recessed structure to the protruding structure 1-1 part of the toothed ring 1, and is nested and fixed on the toothed ring 1.

[0023] The head of the cutting tooth 6 is a conical structure, and the tail of the cutting tooth 6 is an annular groove structure. The fixing pin 7 is inserted into the annular groove at the tail of the cutting tooth 6.

[0024] The cutting tooth 6 is fixed to the tooth cap 2 by the annular groove at the tail and the fixing pin 7.

[0025] An open bushing 9 is fitted between the cutting tooth 6 and the mounting hole, and a top head 8 for disassembling the cutting tooth 6 is provided at the tail of the cutting tooth 6.

[0026] The tail of the cutting tooth 6 is equipped with a top head 8 for removing the bushing 9.

[0027] The cutting tooth 6 is installed tangentially in the top region of the tooth cap 2, and an open bushing 9 is disposed between the cutting tooth 6 and the tooth cap 2.

[0028] The fixing screw assembly includes a fixing screw, a pressure ring sleeve, and a nut. The head of the fixing screw 3 is located on one side of the lower part of the toothed cap 2. The shank of the fixing screw 3 passes through one side of the lower part of the toothed cap 2, the protruding structure 1-1 on the toothed ring 1, and the other side of the lower part of the toothed cap 2, and is threadedly connected to the nut 5. A pressure ring sleeve 4 is fitted between the shank of the fixing screw 3 and the other side of the lower part of the toothed cap 2. The pressure ring sleeve 4 ensures that the front mating surfaces of the toothed ring 1 and the toothed cap 2 can be well pressed together while maintaining the contact area between the fixing screw 3 and the toothed cap 2.

[0029] The advantages of this invention are as follows: 1. The toothed ring is designed to be wrapped by the toothed cap, which is a long-life cycle design component. The toothed cap, as an external breaking element, can be replaced periodically.

[0030] 2. The protruding part of the toothed ring is designed to tilt forward in the direction of rotation, so that when the cutting tooth cap is subjected to the crushing reaction force, it applies radial pressure. Most of the load is borne by the protruding part of the toothed ring, and the fixing screw is subjected to a smaller shear force, making it less likely for the screw to break, thus ensuring the overall structural reliability.

[0031] 3. The outer protrusion of the toothed ring and the inner recess of the toothed cap are designed with an angle between the rear contact surface and the front contact surface, making the root area of ​​the toothed ring root protrusion wider, which has a greater load-bearing capacity and facilitates the disassembly and assembly of the toothed cap.

[0032] 4. The toothed cap is secured with an additional pressure ring sleeve. In traditional designs, the pressure ring sleeve and toothed cap are an integral structure, which cannot guarantee a good fit between the front contact surfaces of the toothed ring and toothed cap. Due to the separate structure, the front contact surfaces of the toothed ring and toothed cap are pressed together by preload. There is no displacement during crushing, increasing the reliability of the connection.

[0033] 5. The cutting teeth are tangentially mounted on the top area of ​​the tooth cap, with an open bushing between them. This better protects the inner bore of the tooth cap and extends its service life.

[0034] 6. The cutting tooth is fixed to the tooth cap by a ring groove at the tail and a fixing pin, which facilitates disassembly.

[0035] 7. The tail of the cutting tooth is equipped with a top for disassembling the bushing, which facilitates the removal of the bushing.

Claims

1. A split-type toothed ring, toothed cap, and cutting tooth structure, comprising a crushing shaft, characterized in that: The crushing shaft (10) is connected to the toothed ring (1) via a key shaft. The main body of the toothed ring (1) is a ring structure. Two or more sets of protrusion structures (1-1) are distributed on the outer periphery of the toothed ring (1). Several tooth caps (2) are connected to the protrusion structures (1-1) via a fixing screw assembly. Cutting teeth (6) are connected to one side of the upper part of the tooth caps (2).

2. The split toothed ring, toothed cap, and tooth cutting structure according to claim 1, characterized in that: The protrusions of the protrusions (1-1) distributed on the toothed ring (1) have an angle α between the mating surface of the protrusions facing the direction of rotation of the crushing shaft (10) and the center line passing through the axis of the crushing shaft (10), and the angle α ranges from 0° to 30°.

3. The split-type toothed ring, toothed cap, and tooth cutting structure according to claim 1, characterized in that: The lower part of the tooth cap (2) is a recessed structure, and the recessed structure is matched with the outer connecting part of the tooth ring (1). The upper part of the tooth cap (2) is provided with a mounting hole, and a cutting tooth (6) is connected in the mounting hole. The cutting tooth (6) is fixed in the mounting hole by a fixing pin (7).

4. A split-type toothed ring, toothed cap, and tooth cutting structure according to claim 1 or 3, characterized in that: The rear mating surface of the toothed ring (1) connected to the toothed cap (2) and the front contact surface are provided with an angle b, the angle b being 0°~30°.

5. A split-type toothed ring, toothed cap, and tooth cutting structure according to claim 3, characterized in that: The head of the cutting tooth (6) is a conical structure, and the tail of the cutting tooth (6) is an annular groove structure. The fixing pin (7) is inserted into the annular groove at the tail of the cutting tooth (6).

6. A split-type toothed ring, toothed cap, and tooth cutting structure according to claim 3, characterized in that: An open bushing (9) is fitted between the cutting tooth (6) and the mounting hole, and a top head (8) for disassembling the cutting tooth (6) is provided at the tail of the cutting tooth (6).

7. A split-type toothed ring, toothed cap, and tooth cutting structure according to claim 1, characterized in that: The fixing screw assembly includes a fixing screw, a pressure ring sleeve, and a nut. The head of the fixing screw (3) is located on one side of the lower part of the toothed cap (2). The rod of the fixing screw (3) passes through one side of the lower part of the toothed cap (2), the protruding structure (1-1) on the toothed ring (1), and the other side of the lower part of the toothed cap (2) and is threaded to the nut (5). A pressure ring sleeve (4) is sleeved between the rod of the fixing screw (3) and the other side of the lower part of the toothed cap (2).

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