A forming tool for slitting the cover of a belt conveyor roller

Abstract

The utility model provides a forming cutter for the slotting of the rubber cover of the roller of a belt conveyor, and belongs to the technical field of belt conveyor maintenance tools, which is used for slotting the rubber cover of the roller of a belt conveyor. The technical scheme is that the rear end of a V-shaped spade is connected with the chuck of an electric hammer, the electric hammer fixing ring and the limiting ring are both circular rings with the same diameter, the electric hammer fixing ring is sleeved on the outer periphery of the front end of the electric hammer, the limiting ring and the electric hammer fixing ring are connected by a connecting rod, the front end of the V-shaped spade extends out of the limiting ring and is opposite to the upper surface of the rubber cover of the roller, the two ends of the positioning block are connected with the inner side of the lower end of the limiting ring and the electric hammer fixing ring respectively, the middle part of the positioning block has a sliding groove along the length direction, the upper part of the sliding block is slidably connected with the sliding groove of the positioning block, and the lower surface of the sliding block is in contact with the upper surface of the rubber cover of the roller. The utility model can slot the rubber cover of the roller of a belt conveyor, and the operation process is efficient, safe and easy to operate, so that the maintenance work efficiency and personnel safety can be effectively improved.

Description

Technical Field

[0001] This utility model relates to a grooving tool for the rubber surface of rollers in belt conveyors, belonging to the technical field of belt conveyor maintenance tools. Background Technology

[0002] In blast furnace charging, belt conveyors are crucial equipment for transporting raw materials such as ore and coke to the blast furnace. During long-term operation, the rubber surfaces of the conveyor rollers age and become damaged due to material friction, wear, and environmental factors, requiring replacement. When replacing the roller rubber, grooving is necessary on the surface, currently done manually. Traditional manual grooving has the following problems: First, the groove shape is unstable: the angle of manual grooving is difficult to control, resulting in different friction coefficients for each groove. Second, the grooving depth is unstable: the depth is affected by the operator's strength and skill; inconsistent depth affects the rubber's lifespan, with excessive depth causing breakage and insufficient depth prematurely wearing down the groove. Third, it is inefficient and unsafe: manual grooving is inefficient, requires excessive labor intensity for workers, and increases the risk of cuts, scratches, and other accidents.

[0003] Therefore, it is essential to improve the existing roller rubber grooving operation. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a forming tool for grooving the rubber of belt conveyor rollers. This forming tool can groove the rubber of belt conveyor rollers. The operation process is efficient, safe and easy to operate, which can effectively improve the efficiency of maintenance work and personnel safety.

[0005] The technical solution to the above technical problem is: A forming tool for grooving the rubber sheet of a belt conveyor roller includes a V-shaped scraper, an electric hammer fixing ring, a limiting ring, a connecting rod, a positioning block, and a sliding block. The rear end of the V-shaped scraper is connected to the electric hammer chuck. The electric hammer fixing ring and the limiting ring are circular rings of the same diameter. The electric hammer fixing ring is fitted around the outer periphery of the front end of the electric hammer. The limiting ring is located in front of the electric hammer fixing ring and opposite to it. The limiting ring and the electric hammer fixing ring are connected by a connecting rod. The front end of the V-shaped scraper extends out of the limiting ring and faces the upper surface of the roller rubber sheet. The positioning block is a rectangular block located below the limiting ring and the electric hammer fixing ring. Both ends of the positioning block are connected to the inner sides of the limiting ring and the electric hammer fixing ring, respectively. The middle of the positioning block has a groove along its length. The sliding block is located below the positioning block. The upper part of the sliding block is connected to the groove of the positioning block. The sliding block and the groove of the positioning block are in sliding fit. The lower surface of the sliding block is in contact with the upper surface of the roller rubber sheet.

[0006] The aforementioned forming tool for grooving the rubber sheet of a belt conveyor roller comprises a V-shaped shovel consisting of a shank and a cutter head. The shank is a round rod with guide grooves at its upper and lower ends, the rear of which is open. Symmetrical arc grooves are located on the left and right sides of the shank, with closed ends. The arc grooves on both sides of the shank are aligned with the steel balls in the hammer drill chuck. The cutter head has a V-shaped cross-section, a cutting edge angle of 30°-60°, a sharp front end, and a shape that matches the groove shape of the rubber sheet of the roller.

[0007] The forming tool used for grooving the rubber of the rollers of the belt conveyor described above has an inner diameter of the electric hammer fixing ring that matches the outer diameter of the front end of the electric hammer. The upper end of the electric hammer fixing ring is open, and there are ear plates bent at ninety degrees at both ends of the opening. The center of the two ear plates has a round hole facing each other. The fastening bolt is passed through the round hole of the two ear plates and connected by a nut. The fastening bolt clamps and fixes the electric hammer fixing ring to the outer periphery of the front end of the electric hammer.

[0008] The forming tool for grooving the rubber of belt conveyor rollers described above has three connecting pieces welded to the outer circumference of the electric hammer fixing ring and the limiting ring. Two connecting pieces are located on the upper sides of the electric hammer fixing ring and the limiting ring, respectively, and the other connecting piece is located in the lower middle position of the electric hammer fixing ring and the limiting ring. The center of each of the three connecting pieces has a through hole. The connecting rod between the electric hammer fixing ring and the limiting ring is a round rod with threaded holes at both ends. A cross-grooved pan head screw connects the two connecting pieces at the upper part of the electric hammer fixing ring and the limiting ring to the threaded holes at both ends of the two connecting rods, respectively. The positioning block has threaded holes at both ends, and a cross-grooved pan head screw connects the connecting piece at the lower middle position of the electric hammer fixing ring and the limiting ring to the threaded holes at both ends of the positioning block.

[0009] The forming tool described above for grooving the rubber sheet of a belt conveyor roller has a sliding block that is a long plate with a right-angled triangle cross-section and an inclination angle of 15-30°. The three sides of the sliding block are rectangular, and the length direction of the sliding block is perpendicular to the length direction of the positioning block. One right-angled side of the sliding block is in close contact with the bottom surface of the positioning block, and the inclined side of the sliding block is pressed against the upper surface of the roller rubber sheet. The inclined side of the sliding block and the upper surface of the roller rubber sheet are in sliding fit.

[0010] The forming tool described above for grooving the rubber sheet of belt conveyor rollers has a connecting screw hole on the upper surface of the sliding block, an annular groove around the upper end of the sliding groove of the positioning block, and the upper nut of the countersunk bolt is embedded in the annular groove at the upper end of the sliding groove of the positioning block. The upper surface of the nut of the countersunk bolt is lower than the upper plane of the sliding groove of the positioning block, and the screw of the countersunk bolt is connected to the connecting screw hole of the sliding block through the sliding groove.

[0011] The beneficial effects of this utility model are: This invention utilizes the vibration of an electric hammer to enable a V-shaped scraper to quickly and efficiently scrape the surface of rubber, forming a V-shaped groove in one step. This lays a solid foundation for subsequent "rubber grooving" work and significantly improves work efficiency.

[0012] This invention can ensure the stability of the scraper during the scraping process, ensuring uniform scraping depth and shape, and improving the repair quality.

[0013] This invention allows for adjustment of the sliding block's position based on the rubber thickness and the replacement of sliders with different tilt angles to adjust the cutting angle, greatly improving the tool's adaptability and meeting the grooving needs of rubber sheets of different thicknesses, thus having a wide range of applications.

[0014] This invention achieves automated operation, reduces the labor intensity of manual operation, lowers the fatigue level of operators, reduces safety accidents such as cuts and scratches during operation, and improves operational safety. Attached Figure Description

[0015] Figure 1 is a structural schematic diagram of this utility model; Figure 2 is Figure 1 The front view; Figure 3 is a schematic diagram of the structure of the electric hammer fixing ring and the limiting ring; Figure 4 is a schematic diagram of the connection between the hammer drill fixing ring and the hammer drill. Figure 5 is a plan view of the rubber after grooving; Figure 6 This is a front sectional view of the rubber after it has been grooved; Figure 7 This is a schematic diagram of the V-shaped shovel blade.

[0016] The markings in the diagram are as follows: 1. V-shaped scraper, 2. Electric hammer fixing ring, 3. Limiting ring, 4. Connecting rod, 5. Positioning block, 6. Sliding block, 7. Slide groove, 8. Annular groove, 9. Ear plate, 10. Fastening bolt, 11. Connecting piece, 12. Cross-head pan screw, 13. Countersunk bolt, 14. Electric hammer, 15. Rubber, 16. V-groove, 17. Blade, 18. Guide groove, 19. Arc groove, 20. Detachable side handle mounting base. Detailed Implementation

[0017] This utility model consists of a V-shaped shovel blade 1, an electric hammer fixing ring 2, a limiting ring 3, a connecting rod 4, a positioning block 5, a sliding block 6, a fastening bolt 10, a connecting bolt 12, and a countersunk bolt 13.

[0018] Figure 1 , 2 As shown in Figure 7, the V-shaped scraper 1 consists of a shank 17 and a cutter head 18. The rear end of the shank 17 of the V-shaped scraper 1 is connected to the electric hammer chuck, and the cutter head 18 of the V-shaped scraper 1 is opposite to the upper surface of the roller rubber sheet 15.

[0019] Figure 1 , 2 As shown in Figure 7, the tool holder 17 is a round rod. The upper and lower ends of the rear part of the tool holder 17 are respectively opened with guide grooves 19. The rear end of the guide grooves 19 is open. When the tool holder 17 is inserted into the electric hammer chuck, the guide grooves 19 play a guiding role. There are symmetrical arc grooves 20 on the left and right sides of the tool holder 17. The two ends of the arc grooves 20 are closed. The arc grooves 20 on both sides of the tool holder 17 cooperate with the steel balls in the electric hammer chuck to lock the drill bit and prevent it from axially dislodging.

[0020] Figure 1 , 2 As shown in Figure 7, the cross-section of the cutter head 18 is V-shaped, the cutting edge angle of the cutter head 18 is 30°-60°, the front end of the cutter head 18 is sharp, and the shape of the cutter head 18 matches the groove shape of the roller rubber.

[0021] Figure 1 , 2 As shown in Figure 4, when the handle 17 of the V-shaped shovel 1 is connected to the chuck of the electric hammer, the detachable side handle mounting base 21 that comes with the electric hammer can be used. The purpose of this detachable side handle mounting base 21 is to allow the auxiliary handle to be attached during operation to further reduce vibration, allow for gripping at any angle, and allow for quick detachment.

[0022] Figure 5 , 6 The results show that during use, the vibration of the electric hammer allows the V-shaped cutter head 18 to quickly and efficiently chip away at the surface of the rubber 15, forming a V-shaped groove 16 in one step. This lays a solid foundation for the subsequent "rubber grooving" work and significantly improves work efficiency.

[0023] Figure 1 , 2 As shown in Figures 3 and 4, the hammer fixing ring 2 is fitted onto the outer periphery of the front end of the hammer 14. The inner diameter of the ring of the hammer fixing ring 2 matches the outer diameter of the front end of the hammer. The upper end of the hammer fixing ring 2 is open, and there are ear plates 9 bent at ninety degrees at both ends of the opening. The center of the two ear plates 9 has a round hole facing each other. The fastening bolt 10 passes through the round hole of the two ear plates 9 and is connected by a nut. The fastening bolt 10 clamps and fixes the hammer fixing ring 2 to the outer periphery of the front end of the hammer 14.

[0024] Figure 1 , 2As shown in Figure 3, the limiting ring 3 is a circular ring with the same diameter as the hammer fixing ring 2, and is located in front of the hammer fixing ring 2 and opposite to it. Three connecting pieces 11 are welded to the outer circumference of the hammer fixing ring 2 and the limiting ring 3 respectively. Two connecting pieces 11 are located on the upper sides of the hammer fixing ring 2 and the limiting ring 3 respectively, and the third connecting piece 11 is located in the lower middle position of the hammer fixing ring 2 and the limiting ring 3. Each of the three connecting pieces 11 has a through hole in its center for connecting the connecting rod 4 and the positioning block 5.

[0025] Figure 1 , 2 As shown in Figure 3, the electric hammer fixing ring 2 and the limiting ring 3 are connected by a connecting rod 4. The connecting rod 4 is a round rod with threaded holes at both ends. The cross-slot pan head screw 12 connects the two connecting pieces 11 on the upper part of the electric hammer fixing ring 2 and the limiting ring 3 to the threaded holes at both ends of the two connecting rods 4 respectively.

[0026] Figure 1 , 2 As shown in Figure 3, the positioning block 5 is a rectangular block. The positioning block 5 is located at the lower part of the limiting ring 3 and the electric hammer fixing ring 2. The two ends of the positioning block 5 have threaded holes. The connecting bolt 12 connects the connecting piece 11 at the lower middle position of the electric hammer fixing ring 2 and the limiting ring 3 to the threaded holes at both ends of the positioning block 5.

[0027] Figure 3 As shown, the positioning block 5 has a groove 7 along its length in the middle. The sliding block 6 is located below the positioning block 5. The upper part of the sliding block 6 is connected to the groove 7 of the positioning block 5. The sliding block 6 and the groove 7 of the positioning block 5 are in sliding fit. The lower surface of the sliding block 6 is in contact with the upper surface of the roller rubber 15.

[0028] Figure 3 As shown, the sliding block 6 is a long plate with a right-angled triangle cross-section. The angle of inclination of the triangle is 15-30°. The three sides of the sliding block 6 are rectangular. The length direction of the sliding block 6 is perpendicular to the length direction of the positioning block 5. One right-angled side of the sliding block 6 is in close contact with the bottom surface of the positioning block 5. The inclined side of the sliding block 6 is pressed against the upper surface of the roller rubber 15. The inclined side of the sliding block 6 and the upper surface of the roller rubber are in sliding fit.

[0029] Figure 3The slide block 6 has a connecting screw hole on its upper surface. The upper periphery of the slide groove 7 of the positioning block 5 has an annular groove 8. The upper nut of the countersunk bolt 13 is embedded in the annular groove 8 at the upper end of the slide groove 7 of the positioning block 5. The upper surface of the nut of the countersunk bolt 13 is lower than the upper plane of the slide groove of the positioning block 5. The screw of the countersunk bolt 13 is connected to the connecting screw hole of the slide block 6 through the slide groove 7. The slide block 6 can rotate around the countersunk bolt 13 and slide back and forth along the annular groove 8 of the slide groove 7, realizing the adaptive tilt angle and fine-tuning of the forming tool, which is used to control the cutting depth and maintain operational stability.

[0030] Figure 5 , 6 The usage process of this utility model is shown as follows: First, install the electric hammer 14 and the V-shaped shovel 1, and check whether the connection of the equipment is firm and whether the limit device is adjusted to the appropriate position. Then, start the electric hammer 14, adjust the vibration of the equipment, and ensure that the V-shaped blade 1 can run smoothly; Begin the scraping operation by aligning the blade 18 of the V-shaped scraper 1 with the damaged area on the surface of the rubber 15 and slowly moving the blade to scrape the surface of the rubber 15 with the V-shaped scraper 1 to form a V-shaped groove 16. During the scraping process, the formation of the V-groove 16 should be checked regularly, and the limiting device should be adjusted as needed to ensure that the scraping depth t is 30% of the belt thickness δ.

[0031] After the scraping is completed, repeat the scraping operation until a diamond-shaped groove is evenly formed on the rubber sheet 15. Repeat the above operation until the processing is completed.

[0032] An embodiment of this utility model is as follows: The V-shaped spatula 1 has a shank 17 with a diameter of 14mm and a length of 160mm, and a cutting edge angle of 45° for the blade head 18. The outer diameter of the electric hammer fixing ring 2 is 80mm, the inner diameter is 72mm, and the thickness is 8mm. The length of the ear plate 9 is 15mm, the diameter of the round hole is 5mm, and the outer diameter of the connecting piece 11 is 12mm, the inner diameter is 4.5mm, and the thickness is 8mm. The outer diameter of the limiting ring 3 is 80mm, the inner diameter is 72mm, and the thickness is 8mm; The diameter of connecting rod 4 is 12mm and its length is 100mm; The positioning block 5 is 100mm long, 30mm wide, and 12mm thick; The length of the sliding block 6 is 80mm, the width is 37mm, and the height is 20mm. The inclination angle of the hypotenuse of the right triangle of the sliding block 6 is 15°. The length of the groove 7 is 46mm, the width is 12mm, and the width of the annular groove 8 is 6mm and the depth is 8mm. The diameter of fastening bolt 10 is 8mm and the length is 20mm; The head diameter of the Phillips head pan screw 12 is 8mm and the length is 20mm; The countersunk bolt 13 has a diameter of 6mm and a length of 20mm.

Claims

1. A forming tool for grooving the rubber sheet of a belt conveyor roller, characterized in that: It includes a V-shaped shovel (1), an electric hammer fixing ring (2), a limiting ring (3), a connecting rod (4), a positioning block (5), and a sliding block (6). The rear end of the V-shaped shovel (1) is connected to the electric hammer chuck. The electric hammer fixing ring (2) and the limiting ring (3) are circular rings of the same diameter. The electric hammer fixing ring (2) is fitted around the front end of the electric hammer (14). The limiting ring (3) is located in front of the electric hammer fixing ring (2) and opposite to the electric hammer fixing ring (2). The limiting ring (3) and the electric hammer fixing ring (2) are connected by the connecting rod (4). The front end of the V-shaped shovel (1) extends out of the limiting ring (3) and connects with the roller rubber (15). The upper surfaces of the two are opposite each other. The positioning block (5) is a rectangular block. The positioning block (5) is located at the lower part of the limiting ring (3) and the electric hammer fixing ring (2). The two ends of the positioning block (5) are connected to the inner side of the limiting ring (3) and the electric hammer fixing ring (2) respectively. The middle part of the positioning block (5) has a sliding groove (7) along the length direction. The sliding block (6) is located below the positioning block (5). The upper part of the sliding block (6) is connected to the sliding groove (7) of the positioning block (5). The sliding block (6) and the sliding groove (7) of the positioning block (5) are in sliding fit. The lower surface of the sliding block (6) is in contact with the upper surface of the roller rubber (15).

2. The forming tool for grooving the rubber sheet of a belt conveyor roller according to claim 1, characterized in that: The V-shaped shovel (1) consists of a shank (17) and a blade (18). The shank (17) is a round rod. The upper and lower ends of the rear part of the shank (17) are respectively provided with guide grooves (19). The rear end of the guide grooves (19) is open. The left and right sides of the shank (17) are respectively provided with symmetrical arc grooves (20). The two ends of the arc grooves (20) are closed. The arc grooves (20) on both sides of the shank (17) are respectively opposite to the steel balls in the electric hammer chuck. The cross section of the blade (18) is V-shaped. The cutting edge angle of the blade (18) is 30°-60°. The front end of the blade (18) is sharp. The shape of the blade (18) matches the groove shape of the roller rubber sheet (15).

3. The forming tool for grooving the rubber sheet of a belt conveyor roller according to claim 1, characterized in that: The inner diameter of the circular hole of the electric hammer fixing ring (2) matches the outer diameter of the front end of the electric hammer (14). The upper end of the electric hammer fixing ring (2) is open, and there are ear plates (9) bent at ninety degrees at both ends of the opening. The center of the two ear plates (9) has a circular hole facing each other. The fastening bolt (10) passes through the circular hole of the two ear plates (9) and is connected by a nut. The fastening bolt (10) clamps and fixes the electric hammer fixing ring (2) to the outer periphery of the front end of the electric hammer (14).

4. The forming tool for grooving the rubber sheet of a belt conveyor roller according to claim 1, characterized in that: Three connecting pieces (11) are welded to the outer periphery of the electric hammer fixing ring (2) and the limiting ring (3). Two connecting pieces (11) are located on the upper sides of the electric hammer fixing ring (2) and the limiting ring (3), respectively. The other connecting piece (11) is located in the lower middle position of the electric hammer fixing ring (2) and the limiting ring (3). The center of each of the three connecting pieces (11) has a through hole. The connecting rod (4) between the electric hammer fixing ring (2) and the limiting ring (3) is a round rod. Both ends of the connecting rod (4) have threaded holes. The connecting bolt (12) connects the two connecting pieces (11) at the upper part of the electric hammer fixing ring (2) and the limiting ring (3) to the threaded holes at both ends of the two connecting rods (4). Both ends of the positioning block (5) have threaded holes. The connecting bolt (12) connects the connecting piece (11) at the lower middle position of the electric hammer fixing ring (2) and the limiting ring (3) to the threaded holes at both ends of the positioning block (5).

5. The forming tool for grooving the rubber sheet of a belt conveyor roller according to claim 1, characterized in that: The sliding block (6) is a long plate with a cross-section of a right triangle. The angle of the hypotenuse of the triangle is 15-30°. The three plates of the sliding block (6) are rectangular. The length direction of the sliding block (6) is perpendicular to the length direction of the positioning block (5). One right-angled plate of the sliding block (6) is closely connected to the bottom surface of the positioning block (5). The hypotenuse of the sliding block (6) is pressed against the upper surface of the roller rubber (15). The hypotenuse of the sliding block (6) and the upper surface of the roller rubber (15) are in sliding fit.

6. The forming tool for grooving the rubber sheet of a belt conveyor roller according to claim 1, characterized in that: The upper surface of the sliding block (6) has a connecting screw hole, and the upper periphery of the sliding groove (7) of the positioning block (5) has an annular groove (8). The upper nut of the countersunk bolt (13) is embedded in the annular groove (8) at the upper end of the sliding groove (7) of the positioning block (5). The upper surface of the nut of the countersunk bolt (13) is lower than the upper plane of the sliding groove (7) of the positioning block (5). The screw of the countersunk bolt (13) is connected to the connecting screw hole of the sliding block (6) through the sliding groove (7).

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