A cylinder with a tooth holder that is easy to replace

Abstract

The utility model discloses a kind of roller of tooth seat convenient to replace, it is related to coal cutter roller technical field, including first connecting disc and connecting assembly;First connecting disc: fixed with spiral plate on circumference, the edge of the spiral plate is fixed with evenly distributed pedestal, the inside of the pedestal is clamped with tooth seat, extrusion assembly is installed in the inside of the pedestal, tooth seat is installed on the side surface of tooth seat;It can be connected with the synergistic effect of extrusion assembly, realize the quick, reliable connection and separation between tooth seat and pedestal;When installing, tooth seat is inserted into pedestal, i.e. through inside triangular block automatic push trapezoidal extrusion block and chuck lock into card slot, complete fixed;When disassembling, only need to loosen threaded rod by special tool, make triangular block exit engagement, chuck is automatically reset under the action of spring Unlocked, entire operation process does not need complex tool or high-strength manpower intervention, significantly reduce the difficulty and time of on-site replacement operation.

Description

Technical Field

[0001] This utility model relates to the field of coal mining machine drums, and in particular to a drum that facilitates the replacement of tooth seats. Background Technology

[0002] During the operation of a coal mining machine, the tooth holder, as the key mounting base for the cutting teeth, withstands high-intensity impacts and complex loads over long periods. Its stability and reliability directly affect the operating efficiency of the entire coal mining system. The tooth holder is typically fixed to the drum base via welding or mechanical connection and must possess sufficient wear and fatigue resistance to cope with continuous vibrations and coal-rock collisions under harsh underground conditions. Since the cutting teeth are critical components directly involved in crushing during coal mining, the tooth holder design must also consider the rapid replacement and accurate positioning of the cutting teeth to ensure the continuous operation capability of the coal mining machine.

[0003] Currently, common toothed seat installation structures mostly use bolt fixing or direct welding to the roller base. These methods have revealed many shortcomings in long-term use. While welded connections are structurally simple, replacing the toothed seat requires on-site cutting and re-welding, a cumbersome process that demands high operator skill and severely impacts production rhythm. Bolted connections, while detachable, also involve tedious disassembly of multiple bolts. Therefore, a roller design that facilitates toothed seat replacement is proposed. Utility Model Content

[0004] The technical problem this invention aims to solve is to overcome existing defects and provide a roller that facilitates the replacement of toothed seats. Through the synergistic action of the connecting and pressing components, it enables rapid and reliable connection and separation between the toothed seat and the base. During installation, the toothed seat is inserted into the base, and the internal triangular block automatically pushes the trapezoidal pressing block and chuck into the slot, completing the fixation. During disassembly, only a special tool is needed to loosen the threaded rod, causing the triangular block to disengage. The chuck then automatically resets and unlocks under the action of a spring. The entire operation process requires no complex tools or high-intensity manual intervention, significantly reducing the difficulty and time of on-site replacement operations, and effectively solving the problems in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a roller for easy replacement of toothed seats, comprising a first connecting disc and a connecting assembly; First connecting plate: A spiral plate is fixed on the circumferential surface, and a base is fixed on the edge of the spiral plate. A tooth seat is snapped into the inside of the base, and a pressing component is installed inside the base. A cutting tooth component is installed on the side of the tooth seat. The connecting assembly includes a mounting groove, a fixing frame, a slide bar, a chuck, a trapezoidal extrusion block, and a third spring. The toothed seat has a mounting groove on its side inside the base. Two corresponding fixing frames are fixed inside the mounting groove. Slide bars are slidably connected inside the fixing frames. A trapezoidal extrusion block is fixed on one side of each slide bar, and a chuck is fixed on the other side of each slide bar. The base has two corresponding slots inside, and the chuck engages with the corresponding slot. A third spring is sleeved on the side of each slide bar. One end of the third spring is fixed to the side of its corresponding fixing frame, and the other end is fixed to the side of the trapezoidal extrusion block. The extrusion assembly fits against the two trapezoidal extrusion blocks. The base and the toothed seat are connected by the connecting assembly.

[0006] Furthermore, the extrusion assembly includes a slider, a triangular block, a threaded rod, a turntable, a second connecting plate, a disassembly groove, and a triangular opening. The base has an internal sliding groove, and a slider is slidably connected within the groove. A triangular block is fixed to the side of the slider, positioned between two corresponding trapezoidal extrusion blocks. Both trapezoidal extrusion blocks are in contact with the surface of the triangular block. A triangular opening is provided on the lower side of the toothed seat, corresponding to the triangular block. A threaded hole is provided on the lower side of the base, and a threaded rod is threadedly connected within the threaded hole. A second connecting plate is fixed to the lower end of the threaded rod, and a disassembly groove is provided at the lower end of the second connecting plate. The upper end of the threaded rod is located inside the base, and the upper end of the threaded rod is rotatably connected to the turntable. The turntable is fixed to the lower side of the corresponding gear seat. By setting the extrusion assembly, during the process of the gear seat being inserted into the base, the triangular block inside the base will extrude the corresponding two trapezoidal extrusion blocks, causing them to move. This will drive the two chucks into the two slots inside the base, thus connecting the base and the gear seat. During disassembly, insert the hex wrench into the disassembly slot, and then rotate the threaded rod downward to drive the triangular block downward into the corresponding triangular opening. At this time, the two chucks will separate from the two slots under the action of the two third springs connected to them, and then the gear seat can be quickly disassembled.

[0007] Furthermore, the cutting tooth assembly includes a threaded post and a cutting tooth. A threaded groove is provided on the side of the tooth holder, and a threaded post is threadedly connected inside the threaded groove. A cutting tooth is fixed on the end face of the threaded post.

[0008] Furthermore, two corresponding connecting plates are fixed to the surface of the cutting tooth, and the side of the connecting plate is provided with a locking hole. Two corresponding grooves are provided on the side of the tooth seat, and the threaded post is located between the two grooves. A locking head is slidably connected inside the groove. A first spring is fixed on the end face of the locking head. The first spring is fixed inside the groove corresponding to it, and the locking head is engaged inside the locking hole corresponding to it. The cutting tooth is supported by setting the locking head.

[0009] Furthermore, two corresponding L-shaped snap-fit ​​brackets are fixed to the surface of the tooth base. The two L-shaped snap-fit ​​brackets snap onto the two sides of the base corresponding to them. The stability of the tooth base after being connected to the base is improved by setting the L-shaped snap-fit ​​brackets.

[0010] Furthermore, a second spring and a support ring are sleeved on the surface of the threaded rod. The second spring is fixed to the lower end of the support ring, and the lower end of the second spring is fixed inside the base. The support ring is in contact with the corresponding turntable. By setting the second spring and the support ring to support the turntable, the stability of the threaded rod under normal conditions is improved, and it is prevented from rotating during use.

[0011] Compared with the prior art, the beneficial effects of this utility model are: this roller, which facilitates the replacement of the gear seat, has the following advantages: Through the synergistic action of the connecting and extrusion components, the connection and separation process between the toothed seat and the base is more efficient and reliable. During installation, the toothed seat is inserted into the base, and the trapezoidal extrusion block and chuck are automatically pushed into the slot by the internal triangular block, achieving quick fixation. During disassembly, only the threaded rod needs to be loosened with a special tool to disengage the triangular block, and the chuck will automatically reset and unlock under the action of the spring. The entire operation process does not require complex tools or high-intensity human intervention, which significantly reduces the difficulty and time of on-site replacement operations, improves maintenance efficiency, and reduces equipment downtime. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the spiral plate structure of this utility model.

[0013] Figure 2 This is a schematic diagram of the cutting tooth structure of this utility model.

[0014] Figure 3 This is a schematic diagram of the connecting component structure of this utility model.

[0015] Figure 4 This is a schematic diagram of the extrusion assembly structure of this utility model.

[0016] Explanation of reference numerals in the attached figures: 1. First connecting plate; 2. Spiral plate; 3. Base; 4. Gear seat; 5. Connecting assembly; 51. Mounting groove; 52. Fixing frame; 53. Sliding bar; 54. Chuck; 55. Trapezoidal extrusion block; 56. Third spring; 6. Extrusion assembly; 61. Slider; 62. Triangular block; 63. Threaded rod; 64. Turntable; 65. Second connecting plate; 66. Disassembly groove; 67. Triangular opening; 7. Cutting tooth assembly; 71. Threaded column; 72. Cutting tooth; 8. Chuck; 9. First spring; 10. Connecting plate; 11. Clip hole; 12. L-shaped clip bracket; 13. Second spring; 14. Support ring. Detailed Implementation

[0017] 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, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-4 This embodiment provides a technical solution: a roller that facilitates the replacement of toothed seats, including a first connecting disc 1 and a connecting assembly 5; First connecting plate 1: A spiral plate 2 is fixed on the circumferential surface, and a base 3 is evenly distributed on the edge of the spiral plate 2. A tooth seat 4 is snapped into the inside of the base 3. An extrusion component 6 is installed inside the base 3, and a cutting tooth component 7 is installed on the side of the tooth seat 4. Connection component 5 includes a mounting groove 51, a fixing frame 52, a slide bar 53, a chuck 54, a trapezoidal pressing block 55, and a third spring 56. The gear seat 4 has a mounting groove 51 on its side inside the base 3. Two corresponding fixing frames 52 are fixed inside the mounting groove 51. Slide bars 53 are slidably connected inside the fixing frames 52. Trapezoidal pressing blocks 55 are fixed to adjacent sides of the two slide bars 53, and a chuck 54 is fixed to the other side of the slide bars 53. The base 3 has two corresponding slots inside, and the chuck 54 engages with the corresponding slot. A third spring 56 is sleeved on the side of the slide bar 53, and one end of the third spring 56 is fixed... The third spring 56 is fixed to the side of the corresponding fixed frame 52, and the other end of the third spring 56 is fixed to the side of the trapezoidal extrusion block 55. The extrusion assembly 6 is in contact with the two trapezoidal extrusion blocks 55. The extrusion assembly 6 includes a slider 61, a triangular block 62, a threaded rod 63, a turntable 64, a second connecting plate 65, a disassembly groove 66, and a triangular opening 67. The base 3 has a sliding groove inside, and the slider 61 is slidably connected inside the sliding groove. The side of the slider 61 is fixed with a triangular block 62. The triangular block 62 is located between the two corresponding trapezoidal extrusion blocks 55. Both trapezoidal extrusion blocks 55 are in contact with the surface of the triangular block 62. A triangular opening is provided on the lower side of the tooth seat 4. 67. Triangular opening 67 corresponds to triangular block 62. A threaded hole is provided on the lower side of the base 3. A threaded rod 63 is threadedly connected inside the threaded hole. A second connecting plate 65 is fixed to the lower end of the threaded rod 63. A disassembly groove 66 is provided at the lower end of the second connecting plate 65. The upper end of the threaded rod 63 is located inside the base 3 and is rotatably connected to a turntable 64. The turntable 64 is fixed to the lower side of the corresponding gear seat 4. The cutting tooth assembly 7 includes a threaded post 71 and a cutting tooth 72. A threaded groove is provided on the side of the gear seat 4. A threaded post 71 is threadedly connected inside the threaded groove. A cutting tooth 72 is fixed on the end face of the threaded post 71. By setting... During the insertion of the toothed seat 4 into the base 3, the triangular block 62 inside the base 3 will press the corresponding two trapezoidal pressing blocks 55 to move them, thereby driving the two chucks 54 into the two slots inside the base 3, thus connecting the base 3 and the toothed seat 4. When disassembling, insert the hex wrench into the disassembly slot 66, and then rotate the threaded rod 63 downward to drive the triangular block 62 downward into the corresponding triangular opening 67. At this time, the two chucks 54 will separate from the two slots under the action of the two third springs 56 connected to them, and then the toothed seat 4 can be quickly disassembled. The base 3 and the toothed seat 4 are connected by the connecting component 5.

[0019] Wherein: two corresponding connecting plates 10 are fixed on the surface of the cutting tooth 72, and a locking hole 11 is opened on the side of the connecting plate 10. Two corresponding grooves are opened on the side of the tooth seat 4. The threaded post 71 is located between the two grooves. A locking head 8 is slidably connected inside the groove. A first spring 9 is fixed on the end face of the locking head 8. The first spring 9 is fixed inside the groove corresponding to it. The locking head 8 is locked inside the locking hole 11 corresponding to it. The cutting tooth 72 is supported by setting the locking head 8.

[0020] Specifically, two corresponding L-shaped snap-fit ​​brackets 12 are fixed on the surface of the tooth base 4. The two L-shaped snap-fit ​​brackets 12 are snapped onto the two sides of the base 3 corresponding to them. The stability of the tooth base 4 after being connected to the base 3 is improved by setting the L-shaped snap-fit ​​brackets 12.

[0021] Wherein: a second spring 13 and a support ring 14 are sleeved on the surface of the threaded rod 63. The second spring 13 is fixed to the lower end of the support ring 14, and the lower end of the second spring 13 is fixed inside the base 3. The support ring 14 is in contact with the corresponding turntable 64. By setting the second spring 13 and the support ring 14 to support the turntable 64, the stability of the threaded rod 63 under normal conditions is improved, and it is prevented from rotating during use.

[0022] The working principle of the roller for easy replacement of toothed seats provided by this utility model is as follows: When the toothed seat 4 is inserted into the base 3, the triangular block 62 in the extrusion assembly 6 interacts with the trapezoidal extrusion block 55 in the connecting assembly 5 inside the base 3. During the movement, the triangular block 62 extrudes the trapezoidal extrusion blocks 55 on both sides, causing it to drive the slide bar 53 and chuck 54 to slide along the fixed frame 52, thereby causing the chuck 54 to engage in the corresponding slot in the base 3, realizing a reliable connection between the toothed seat 4 and the base 3. During this process, the third spring 56 plays a buffering and reset auxiliary role. During disassembly, by inserting the tool into the disassembly slot 66 of the second connecting plate 65 and rotating the threaded rod 63, it moves downward and drives the triangular block 62 to move down along the slider 61 into the three slots of the toothed seat 4. Inside the corner opening 67, the trapezoidal pressing blocks 55 on both sides lose their pressing force. Under the action of the third spring 56, the chuck 54 is driven out of the slot, allowing the tooth holder 4 to be removed from the base 3 for quick disassembly. The cutting tooth assembly 7 is connected to the threaded groove on the side of the tooth holder 4 via the threaded post 71 to fix the cutting tooth 72. Under the action of the first spring 9, the chuck 8 is inserted into the chuck hole 11 of the connecting plate 10 to further reinforce the cutting tooth 72 and prevent it from loosening. The L-shaped snap-fit ​​bracket 12 on the surface of the tooth holder 4 is snapped onto both sides of the base 3 during assembly to enhance the overall connection stability. In addition, the second spring 13 and the support ring 14 on the surface of the threaded rod 63 provide support for the turntable 64 to prevent the threaded rod 63 from rotating during normal operation, further improving the reliability of the structure.

[0023] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A roller with easily replaceable gear seats, characterized in that: Includes a first connecting disk (1) and a connecting component (5); First connecting plate (1): A spiral plate (2) is fixed on the circumferential surface. A base (3) is fixed on the edge of the spiral plate (2). A tooth seat (4) is snapped into the inside of the base (3). An extrusion assembly (6) is installed inside the base (3). A cutting tooth assembly (7) is installed on the side of the tooth seat (4). Connecting component (5): includes mounting groove (51), fixing frame (52), slide bar (53), chuck (54), trapezoidal extrusion block (55) and third spring (56). The toothed seat (4) has a mounting groove (51) on the side inside the base (3). Two corresponding fixing frames (52) are fixed inside the mounting groove (51). Slide bars (53) are slidably connected inside the fixing frames (52). Trapezoidal extrusion blocks (55) are fixed on the adjacent sides of the two slide bars (53). A chuck (54) is fixed on the other side of the strip (53). The base (3) has two corresponding slots inside. The chuck (54) is engaged in the corresponding slot. A third spring (56) is sleeved on the side of the slide (53). One end of the third spring (56) is fixed on the side of the corresponding fixing frame (52). The other end of the third spring (56) is fixed on the side of the trapezoidal extrusion block (55). The extrusion assembly (6) is in contact with the two trapezoidal extrusion blocks (55).

2. The roller with easily replaceable gear seats according to claim 1, characterized in that: The extrusion assembly (6) includes a slider (61), a triangular block (62), a threaded rod (63), a turntable (64), a second connecting plate (65), a disassembly groove (66), and a triangular opening (67). The base (3) has an internal groove, and the slider (61) is slidably connected inside the groove. A triangular block (62) is fixed to the side of the slider (61). The triangular block (62) is located between two corresponding trapezoidal extrusion blocks (55), and both trapezoidal extrusion blocks (55) are in contact with the surface of the triangular block (62). The lower side of the toothed seat (4) is open. A triangular opening (67) is provided, which corresponds to a triangular block (62). A threaded hole is provided on the lower side of the base (3). A threaded rod (63) is threadedly connected inside the threaded hole. A second connecting plate (65) is fixed to the lower end of the threaded rod (63). A disassembly groove (66) is provided at the lower end of the second connecting plate (65). The upper end of the threaded rod (63) is located inside the base (3). The upper end of the threaded rod (63) is rotatably connected to a turntable (64). The turntable (64) is fixed to the lower side of the corresponding gear seat (4).

3. A roller with easily replaceable gear seats according to claim 1, characterized in that: The cutting tooth assembly (7) includes a threaded post (71) and a cutting tooth (72). A threaded groove is provided on the side of the tooth holder (4). The threaded post (71) is threadedly connected inside the threaded groove. The cutting tooth (72) is fixed on the end face of the threaded post (71).

4. A roller with easily replaceable gear seats according to claim 3, characterized in that: The surface of the cutting tooth (72) is fixed with two corresponding connecting plates (10). The side of the connecting plate (10) is provided with a locking hole (11). The side of the tooth seat (4) is provided with two corresponding grooves. The threaded column (71) is located between the two grooves. The inside of the groove is slidably connected with a locking head (8). The end face of the locking head (8) is fixed with a first spring (9). The first spring (9) is fixed inside the groove corresponding to it. The locking head (8) is engaged inside the locking hole (11) corresponding to it.

5. A roller with easily replaceable gear seats according to claim 1, characterized in that: The tooth base (4) has two corresponding L-shaped clips (12) fixed on its surface. The two L-shaped clips (12) are clipped onto the two sides of the base (3) corresponding to them.

6. A roller with easily replaceable gear seats according to claim 2, characterized in that: The surface of the threaded rod (63) is fitted with a second spring (13) and a support ring (14). The second spring (13) is fixed to the lower end of the support ring (14). The lower end of the second spring (13) is fixed inside the base (3). The support ring (14) is in contact with the corresponding turntable (64).

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