A polishing device for fire-fighting equipment processing

Abstract

The application discloses a kind of polishing equipment for fire-fighting equipment processing, belongs to the field of polishing equipment, including base, the side of base top is fixedly connected with support frame, the side of support frame bottom is fixedly connected with mounting bracket, the middle of base top is rotatably connected with pivot, the outer surface of pivot is fixedly connected with worm wheel.The application can realize quantitative self-adaptive feed compensation according to the actual outer diameter wear of polishing grinding wheel, through the limiting support cooperation of limiting plate and clamping block, solve the problem of stress deviation and excessive displacement of internal thread plate during compensation, avoid compensation error.Compared with traditional manual shutdown calibration method, the structure can offset the grinding distance change caused by grinding wheel wear in real time, continuously ensure the constant grinding reference of grinding wheel, effectively solve the quality defects such as polishing powerlessness, burr residue, uneven workpiece roughness, edge polishing residue, and greatly improve the precision consistency and product qualification rate of fire-fighting equipment batch polishing.

Description

Technical Field

[0001] This invention relates to the field of grinding equipment, and more specifically, to a grinding equipment for processing fire-fighting equipment. Background Technology

[0002] Firefighting equipment mainly includes metal components such as fire extinguisher cylinders, fire pipe fittings, fire valve bodies, fire monitor casings, and fire hydrant boxes. During the manufacturing process, the workpiece ends, welding positions, shaped curved surfaces, and assembly steps all require grinding, deburring, leveling, and polishing to ensure a smooth product appearance, high assembly precision, and satisfactory coating adhesion. Firefighting equipment contains a large number of cylindrical metal components (such as fire extinguisher cylinders), which require grinding and polishing during processing.

[0003] In existing fire-fighting equipment grinding equipment, the grinding wheel is a high-frequency consumable material. Long-term friction with the metal workpiece causes continuous wear on its outer diameter and thickness reduction. Traditional grinding equipment often uses a fixed locking structure for the grinding wheel feed position, lacking wear compensation functionality. As the grinding wheel wears, the grinding center continuously shifts from the workpiece machining reference, leading to constant changes in the contact pressure and grinding distance between the grinding wheel and the workpiece. In the later stages of processing, grinding wheel wear results in weakened grinding, incomplete burr removal, uneven workpiece roughness, and grinding residue on edges and corners, among other quality problems. Summary of the Invention

[0004] In view of the problems existing in the prior art, the purpose of this invention is to provide a grinding device for processing fire-fighting equipment.

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] A grinding device for processing fire-fighting equipment includes a base, a support frame fixedly connected to one side of the top of the base, an mounting frame fixedly connected to one side of the bottom of the support frame, a rotating shaft rotatably connected to the middle of the top of the base, a worm gear fixedly connected to the outer surface of the rotating shaft, a stepper motor fixedly connected to the front of the top of the base, a worm gear fixedly connected to the output end of the stepper motor, and a compensation component provided at the bottom of the mounting frame. The compensation component includes sleeve plates fixed to both sides of the bottom of the mounting frame. Telescopic plates are slidably connected inside the sleeve plates. Replacement components are provided on the side of the two telescopic plates that are close to each other. A grinding wheel is provided between the two replacement components. A first drive motor is fixedly connected to one side of one of the telescopic plates. A slot is formed in the middle of the side of the two sleeve plates that are close to each other. A moving rod is fixedly connected to the top of the side of the two telescopic plates that are close to each other. A first threaded rod is threaded inside the moving rod. A slide rail is fixedly connected to the bottom of the side of the two sleeve plates that are close to each other. An internally threaded plate is slidably connected inside the slide rail. A second threaded rod is threaded inside the internally threaded plate. A contact plate is rotatably connected to the bottom of the second threaded rod.

[0007] Furthermore, the slide rail and the internal threaded plate are adapted to each other to prevent the internal threaded plate from rotating circumferentially inside the slide rail. A magnet is fixedly connected to the top of the second threaded rod, and the magnet and the moving rod are attracted to each other. The moving rod is made of ferromagnetic material.

[0008] Furthermore, the top of the first threaded rod is connected to the bottom of the mounting bracket via a bearing, the moving rod slides between the two slots, the output end of the first drive motor is connected to one of the replacement components, and a fixing component is provided on the top of one side of the slide rail.

[0009] Furthermore, the fixing component includes a limiting plate slidably connected to the top of one side of the slide rail, a locking block fixedly connected to one end of the bottom of the limiting plate, and a groove provided on the top of one side of the slide rail, the groove being adapted to the locking block.

[0010] Furthermore, the replacement component includes a mounting shaft rotatably connected to one side of the telescopic plate. A mounting groove is provided on one side of the mounting shaft, and a first through groove is provided inside the mounting shaft. Two sliding rods are provided on both sides inside the first through groove. Insert rods are slidably connected to the outer surfaces of the sliding rods. A connecting block is inserted inside the mounting groove, and a slot is provided inside the connecting block.

[0011] Furthermore, the outer surface of the mounting shaft is symmetrically fixedly connected with vertical rods, the outer surface of the vertical rods is slidably connected with hooks, the outer surface of the vertical rods is sleeved with a first spring, and the hooks are adapted to one end of the insertion rod.

[0012] Furthermore, one side of the connecting block is fixedly connected to one side of the grinding wheel, the interior of the first through groove is connected to the interior of the mounting groove, the insert rod and the slot are adapted to each other, and one of the mounting shafts is fixedly connected to the first drive motor.

[0013] Furthermore, a feeding assembly is provided at the top of the rotating shaft. The feeding assembly includes a connecting plate fixed to the top of the rotating shaft. Support plates are fixedly connected to both sides of the connecting plate. A side plate is fixedly connected to the top side of the support plate. A second drive motor is fixedly connected to one side of the side plate. A disc is fixedly connected to the output end of the second drive motor. An electric push rod is fixedly connected to the middle of one side of the disc. A hinge seat is fixedly connected to the output end of the electric push rod. Two hinge rods are hinged inside the hinge seat. An arc-shaped plate is hinged to one end of each hinge rod. Two sliding grooves are symmetrically opened on one side of the disc. Limit rods are slidably connected inside the sliding grooves.

[0014] Furthermore, a support roller is symmetrically and rotatably arranged on the top of the support plate near the side plate, one end of the limiting rod is fixedly connected to the arc plate, the other end of the limiting rod is slidably inserted into the groove, and a leveling component is provided on one side inside the support plate.

[0015] Furthermore, the alignment assembly includes a second through groove formed inside one side of the support plate and a trapezoidal block fixed to the rear top of the base. A contact rod is slidably connected inside the second through groove. A second spring is fixedly connected to the bottom of the contact rod. A compression rod is fixedly connected to the top of the second spring. A third spring is fixedly connected to one side of the contact rod.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This solution incorporates a compensation component that provides quantitative adaptive feed compensation based on the actual wear of the grinding wheel's outer diameter. Through the coordination of a limit plate and a locking block, it addresses issues such as force offset and excessive displacement of the internal thread plate during compensation, thus avoiding compensation errors. Compared to traditional manual stop-and-calibration methods, this structure can offset grinding pitch changes caused by grinding wheel wear in real time, continuously ensuring a constant grinding reference. This effectively solves quality defects such as insufficient grinding power, burr residue, uneven workpiece roughness, and grinding residue at edges and corners, restoring the grinding surface at the bottom of the grinding wheel to its initial height setting value. This significantly improves the accuracy consistency and product qualification rate of batch grinding of fire-fighting equipment.

[0017] 2. This solution incorporates a replacement component. When the grinding wheel wears out and needs replacement, simply release the locking hook and pull out the insert rod for quick disassembly and assembly of the connecting block and grinding wheel. After assembly, the spring automatically resets and locks the connection, completing the fixation. The structure is simple and easy to assemble and disassemble, requiring no tools or repeated alignment calibration. This significantly reduces downtime for grinding wheel replacement, lowers equipment maintenance workload, and effectively improves the equipment's continuous operation capability and production efficiency.

[0018] 3. This device is equipped with a feeding component and a positioning component to ensure that the workpiece is accurately centered in the grinding area, eliminating misalignment and missed grinding. Combined with a stepper motor-driven dual-station alternating structure, it enables parallel and alternating grinding operations and manual loading / unloading processes, eliminating idle waiting time. Simultaneously, a second drive motor rotates the workpiece for grinding, ensuring uniform and comprehensive grinding of the workpiece's outer circumference. While ensuring processing quality, this significantly improves the overall processing efficiency and automation level of the equipment. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the compensation component structure of the present invention; Figure 4 This is a schematic diagram of the fixed component structure of the present invention; Figure 5 This is a schematic diagram of the replacement component structure of the present invention; Figure 6 This is a schematic diagram of the connecting block structure of the present invention; Figure 7 This is a schematic diagram of the feeding assembly structure of the present invention; Figure 8 This is a schematic diagram of the alignment component structure of the present invention.

[0020] Explanation of the labels in the diagram: 1. Base; 2. Support frame; 3. Mounting bracket; 4. Compensation component; 41. Sleeve plate; 42. Telescopic plate; 43. First threaded rod; 44. Moving rod; 45. Slide rail; 46. Grinding wheel; 47. First drive motor; 48. Fixing component; 481. Limiting plate; 482. Locking block; 483. Groove; 49. Replacement component; 491. Mounting shaft; 492. Vertical rod; 493. First spring; 494. Hook; 495. Slide rod; 496. Mounting slot; 497. First through slot; 498. Insert rod; 499. Connecting block; 4910. Slot; 410. Slot; 411. Second threaded rod; 412. Internal threaded plate; 413. Contact plate; 414. Magnet; 5. Feeding assembly; 51. Connecting plate; 52. Support plate; 53. Side plate; 54. Second drive motor; 55. Disc; 56. Electric push rod; 57. Arc plate; 58. Alignment assembly; 581. Second through slot; 582. Contact rod; 583. Second spring; 584. Third spring; 585. Compression rod; 586. Trapezoidal block; 59. Slide groove; 510. Hinge seat; 511. Hinge rod; 512. Limiting rod; 513. Support roller; 6. Stepper motor; 7. Worm gear; 8. Worm wheel; 9. Shaft. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0022] Please see Figures 1 to 8 A grinding device for processing fire-fighting equipment includes a base 1, a support frame 2 fixedly connected to one side of the top of the base 1, a mounting frame 3 fixedly connected to one side of the bottom of the support frame 2, a rotating shaft 9 rotatably connected to the middle of the top of the base 1, a worm gear 8 fixedly connected to the outer surface of the rotating shaft 9, a stepper motor 6 fixedly connected to the front of the top of the base 1, a worm gear 7 fixedly connected to the output end of the stepper motor 6, and a compensation component 4 provided at the bottom of the mounting frame 3.

[0023] like Figure 3 As shown, the compensation component 4 includes sleeve plates 41 fixed to both sides of the bottom of the mounting bracket 3. A telescopic plate 42 is slidably connected inside the sleeve plate 41. A replacement component 49 is provided on the side of the two telescopic plates 42 that are close to each other. A grinding wheel 46 is provided between the two replacement components 49. A first drive motor 47 is fixedly connected to one side of one of the telescopic plates 42. A slot 410 is opened in the middle of the side of the two sleeve plates 41 that are close to each other. A moving rod 44 is fixedly connected to the top of the side of the two telescopic plates 42 that are close to each other. A first threaded rod 43 is threadedly connected inside the moving rod 44. A slide rail 45 is fixedly connected to the bottom of the side of the two sleeve plates 41 that are close to each other. An internal threaded plate 412 is slidably connected inside the slide rail 45. A second threaded rod 411 is threadedly connected inside the internal threaded plate 412. A contact plate 413 is rotatably connected to the bottom of the second threaded rod 411.

[0024] The slide rail 45 and the internal thread plate 412 are adapted to each other to prevent the internal thread plate 412 from rotating circumferentially inside the slide rail 45. A magnet 414 is fixedly connected to the top of the second thread rod 411. The magnet 414 and the moving rod 44 are attracted to each other. The moving rod 44 is made of ferromagnetic material.

[0025] The top of the first threaded rod 43 is connected to the bottom of the mounting bracket 3 by bearings. The moving rod 44 slides between the two slots 410. The output end of the first drive motor 47 is connected to one of the replacement components 49. A fixing component 48 is provided on the top of one side of the slide rail 45.

[0026] During the later stages of grinding wheel 46's operation, wear occurs on its outer diameter, requiring wear compensation. At this point, pressing the second threaded rod 411 causes the inner threaded plate 412 to slide downwards inside the slide rail 45, separating the moving rod 44 that was originally in contact with the magnet 414. At this time, a certain gap exists between the contact plate 413 and the outer diameter of the grinding wheel 46. Rotating the two second threaded rods 411 causes the contact plate 413 to approach and contact the surface of the grinding wheel 46. After complete contact, the two inner threaded plates 412 are pushed upwards as a whole. Move the wheel to the top of the slide rail 45. At this time, there is a gap between the magnet 414 and the moving rod 44. This gap is the wear amount of the grinding wheel 46. Rotate the first threaded rod 43 to drive the moving rod 44 to move downward, so that the moving rod 44 drives the two telescopic plates 42 to move downward synchronously until the moving rod 44 and the magnet 414 are in contact with each other again. At this time, the bottom of the grinding wheel 46 moves to the initial position, which can compensate for the wear and avoid quality problems such as weak grinding, incomplete burr removal, uneven workpiece roughness, and grinding residue on the edges and corners.

[0027] like Figure 4 As shown, the fixing component 48 includes a limiting plate 481 that is slidably connected to the top of one side of the slide rail 45. A locking block 482 is fixedly connected to one end of the bottom of the limiting plate 481. A groove 483 is provided on the top of one side of the slide rail 45. The groove 483 and the locking block 482 are adapted to each other.

[0028] During the downward movement of the moving rod 44, the moving rod 44 comes into contact with the magnet 414. However, the internal threaded plate 412 lacks a limit, causing the downward force of the moving rod 44 to push the second threaded rod 411 and the internal threaded plate 412 downward, resulting in excessive displacement of the telescopic plate 42 inside the sleeve plate 41. Therefore, when the internal threaded plate 412 is moved to the top of the slide rail 45, the limiting plate 481 is pulled to one side, causing the locking block 482 to move completely into the groove 483, avoiding obstruction to the sliding of the internal threaded plate 412. When the internal threaded plate 412 has completely passed through the limiting plate 481, the limiting plate 481 is pushed to support the internal threaded plate 412. When the moving rod 44 moves downward, it can fix the magnet 414, preventing the internal threaded plate 412 from displacing inside the slide rail 45 and avoiding errors when compensating for wear on the grinding wheel 46.

[0029] like Figures 5-6As shown, the replacement component 49 includes a mounting shaft 491 rotatably connected to one side of the telescopic plate 42. A mounting groove 496 is provided on one side of the mounting shaft 491. A first through groove 497 is provided inside the mounting shaft 491. Two sliding rods 495 are provided on both sides inside the first through groove 497. An insert rod 498 is slidably connected to the outer surface of the sliding rod 495. A connecting block 499 is inserted into the mounting groove 496. A slot 4910 is provided inside the connecting block 499.

[0030] A vertical rod 492 is symmetrically fixedly connected to the outer surface of the mounting shaft 491. A hook 494 is slidably connected to the outer surface of the vertical rod 492. A first spring 493 is sleeved on the outer surface of the vertical rod 492. The hook 494 is adapted to one end of the insertion rod 498.

[0031] One side of the connecting block 499 is fixedly connected to one side of the grinding wheel 46. The interior of the first through groove 497 is connected to the interior of the mounting groove 496. The insert rod 498 is adapted to the slot 4910. One of the mounting shafts 491 is fixedly connected to the first drive motor 47.

[0032] After a period of use, the grinding wheel 46 will wear out too much, and the grinding edge on its surface will be completely worn away, making it impossible to grind anymore. At this time, the grinding wheel 46 needs to be replaced. First, pull the two hooks 494 away from each other to overcome the elastic force of the first spring 493 and disengage them from the end of the insert rod 498. Then, rotate the hooks 494 at a certain angle and offset them against the outer wall of the vertical rod 492 to achieve temporary holding. Next, push the insert rod 498 to move towards the other side of the first through groove 497, so that the insert rod 498 moves out of the slot 4910. At this time, the connecting block 499 can be pulled laterally to move the connecting block 499 out of the mounting groove 496. At this time, the grinding wheel 46 can be removed. Then, the connecting block 499 of the new grinding wheel is reinserted into the mounting groove 496. Next, push the insert rod 498 into the slot 4910. When the insert rod 498 moves into place, the hooks 494 are re-locked at both ends of the insert rod 498 under the action of the first spring 493, fixing the insert rod 498, thereby realizing the quick replacement of the grinding wheel 46.

[0033] like Figure 7As shown, a feeding assembly 5 is provided on the top of the rotating shaft 9. The feeding assembly 5 includes a connecting plate 51 fixed to the top of the rotating shaft 9. Support plates 52 are fixedly connected to both sides of the connecting plate 51. A side plate 53 is fixedly connected to the top side of the support plate 52. A second drive motor 54 is fixedly connected to one side of the side plate 53. A disc 55 is fixedly connected to the output end of the second drive motor 54. An electric push rod 56 is fixedly connected to the middle of one side of the disc 55. A hinge seat 510 is fixedly connected to the output end of the electric push rod 56. Two hinge rods 511 are hinged inside the hinge seat 510. An arc plate 57 is hinged to one end of the hinge rod 511. Two sliding grooves 59 are symmetrically opened on one side of the disc 55. A limit rod 512 is slidably connected inside the sliding groove 59.

[0034] A support roller 513 is symmetrically and rotatably arranged on the top of the support plate 52 near the side plate 53. One end of the limiting rod 512 is fixedly connected to the arc plate 57, and the other end of the limiting rod 512 is slidably inserted into the slide groove 59. A straightening component 58 is provided on one side inside the support plate 52.

[0035] like Figure 8 As shown, the alignment component 58 includes a second through groove 581 opened inside one side of the support plate 52 and a trapezoidal block 586 fixed to the rear top of the base 1. A contact rod 582 is slidably connected inside the second through groove 581. A second spring 583 is fixedly connected to the bottom of the contact rod 582. A pressing rod 585 is fixedly connected to the top of the second spring 583. A third spring 584 is fixedly connected to one side of the contact rod 582.

[0036] When grinding cylindrical fire-fighting equipment, the cylindrical fire-fighting equipment is placed on the surface of two arc-shaped plates 57. The electric push rod 56 is activated to push the hinge seat 510 to one side. The hinge seat 510 pushes the two hinge rods 511 to one side, forcing the two arc-shaped plates 57 to move towards the inner wall of the cylindrical fire-fighting equipment, so that the arc-shaped plates 57 clamp and fix the fire-fighting equipment. The stepper motor 6 drives the worm gear 7 to rotate, and then the worm wheel 8 drives the rotating shaft 9 to rotate, moving the assembled fire-fighting equipment under the grinding wheel 46 for grinding. At this time, the equipment that has been ground at another station is manually removed and then the equipment that needs to be ground is assembled. This allows the other station to load and unload materials while grinding, realizing automatic rotation of the two stations and greatly reducing the idle time of the equipment.

[0037] After manual assembly, the fire-fighting equipment needs to be corrected to avoid errors during grinding, preventing certain areas from being ground. When the equipment is moved under the grinding wheel 46, the contact rod 582 moves synchronously. When the contact rod 582 contacts the inclined surface of the trapezoidal block 586, it pushes the contact rod 582 to the other side of the second through groove 581, causing the pressing rod 585 to apply a pushing force to the fire-fighting equipment above the two support rollers 513, pushing it to the working area. The fire-fighting equipment is then clamped and fixed by the two arc plates 57. During grinding, the second drive motor 54 drives the disc 55 to rotate, causing the fire-fighting equipment to rotate and be ground.

[0038] Instructions for use: When the outer diameter of the grinding wheel 46 wears during the later stages of grinding, press the second threaded rod 411 to move the inner threaded plate 412 down along the slide rail 45, causing the magnet 414 to separate from the moving rod 44, creating a gap between the contact plate 413 and the worn outer diameter of the grinding wheel 46. Rotate both sets of second threaded rods 411 to make the contact plate 413 fit against the worn outer diameter of the grinding wheel 46, and then push the inner threaded plate 412 up to the top of the slide rail 45. At this point, the gap between the magnet 414 and the moving rod 44 is the actual wear amount of the grinding wheel.

[0039] To avoid displacement errors during the compensation process, before the internal thread plate 412 moves upward, the limiting plate 481 is pulled laterally so that the locking block 482 is housed in the groove 483, avoiding sliding interference. After the internal thread plate 412 is in place, the resetting limiting plate 481 forms a vertical support limit on it, locking the sliding degree of freedom of the internal thread plate 412 and preventing it from moving downward under force.

[0040] Rotating the first threaded rod 43 drives the moving rod 44 to move the telescopic plate 42 down synchronously until the moving rod 44 and the magnet 414 re-fit, completing the micro-feed compensation of the grinding wheel 46, so that the grinding wheel grinding reference is restored to the initial working position, effectively improving the quality defects caused by grinding wheel wear, such as weak grinding, burr residue, uneven workpiece roughness and incomplete edge grinding.

[0041] When the grinding wheel 46 wears beyond its limit and loses its grinding performance, pull the two sets of hooks 494 in opposite directions to release their limiting constraint on the insertion rod 498; push the insertion rod 498 out of the slot 4910 to release the locking of the connecting block 499, and pull out the connecting block 499 laterally to complete the disassembly of the old grinding wheel 46.

[0042] When replacing a new grinding wheel, insert the connecting block 499 of the new grinding wheel into the mounting slot 496, push the insert rod 498 into the slot 4910. After the insert rod 498 is in place, the hook 494 automatically resets and latches the two ends of the insert rod 498 under the elastic force of the first spring 493, thereby locking and fixing the insert rod 498. This quickly completes the assembly and replacement of the grinding wheel 46, eliminating the tedious process of traditional bolt disassembly and assembly, and effectively improving the efficiency of consumable replacement.

[0043] When grinding cylindrical fire-fighting equipment, the workpiece is placed on the outside of two sets of arc plates 57. The electric push rod 56 drives the hinge seat 510 to move, and the hinge rod 511 drives the two sets of arc plates 57 to expand outward synchronously. This achieves self-adaptive support and positioning from inside the workpiece, avoiding deformation of the thin-walled workpiece during clamping.

[0044] Stepper motor 6 drives rotating shaft 9 to rotate via worm gear 7 and worm wheel 8, transferring the workpiece to be ground to below grinding wheel 46. The equipment adopts a dual-station alternating operation structure. While grinding is being performed at one station, loading and unloading operations can be completed simultaneously at the other station, eliminating idle waiting time and significantly improving overall processing efficiency.

[0045] During the workpiece transfer process, the contact rod 582 moves synchronously with the workstation. Through the inclined pressing cooperation with the trapezoidal block 586, the contact rod 582 is driven to slide laterally along the second through groove 581, which drives the pressing rod 585 to push and correct the workpiece position, accurately returning the workpiece to the grinding center area, eliminating placement offset errors, and preventing local missed grinding problems.

[0046] After the workpiece is clamped in place, the second drive motor 54 drives the disc 55 and the cylindrical fire-fighting equipment to rotate at a uniform speed, which, together with the grinding wheel 46, achieves uniform grinding of the entire outer periphery of the workpiece, effectively ensuring the consistency of the workpiece grinding accuracy and surface flatness.

[0047] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. A grinding device for processing fire-fighting equipment, comprising a base (1), a support frame (2) fixedly connected to one side of the top of the base (1), an mounting frame (3) fixedly connected to one side of the bottom of the support frame (2), a rotating shaft (9) rotatably connected to the middle of the top of the base (1), a worm gear (8) fixedly connected to the outer surface of the rotating shaft (9), a stepper motor (6) fixedly connected to the front side of the top of the base (1), and a worm (7) fixedly connected to the output end of the stepper motor (6); Its features are: The bottom of the mounting bracket (3) is provided with a compensation component (4); The compensation component (4) includes sleeve plates (41) fixed on both sides of the bottom of the mounting bracket (3). A telescopic plate (42) is slidably connected inside the sleeve plate (41). A replacement component (49) is provided on the side of the two telescopic plates (42) that are close to each other. A grinding wheel (46) is provided between the two replacement components (49). A first drive motor (47) is fixedly connected to one side of one of the telescopic plates (42). A slot (410) is opened in the middle of the side of the two sleeve plates (41) that are close to each other. A moving rod (44) is fixedly connected to the top of the side of the two telescopic plates (42) that are close to each other. A first threaded rod (43) is threadedly connected inside the moving rod (44). A slide rail (45) is fixedly connected to the bottom of the side of the two sleeve plates (41) that are close to each other. An internal threaded plate (412) is slidably connected inside the slide rail (45). A second threaded rod (411) is threadedly connected inside the internal threaded plate (412). A contact plate (413) is rotatably connected to the bottom of the second threaded rod (411).

2. The grinding equipment for processing fire-fighting equipment according to claim 1, characterized in that: The slide rail (45) and the internal thread plate (412) are adapted to each other to prevent the internal thread plate (412) from rotating circumferentially inside the slide rail (45). A magnet (414) is fixedly connected to the top of the second thread rod (411). The magnet (414) and the moving rod (44) are attracted to each other. The moving rod (44) is made of ferromagnetic material.

3. The grinding equipment for processing fire-fighting equipment according to claim 2, characterized in that: The top of the first threaded rod (43) is connected to the bottom of the mounting bracket (3) by a bearing. The moving rod (44) slides between the two slots (410) inside. The output end of the first drive motor (47) is connected to one of the replacement components (49). A fixing component (48) is provided on the top of one side of the slide rail (45).

4. The grinding equipment for processing fire-fighting equipment according to claim 3, characterized in that: The fixing component (48) includes a limiting plate (481) slidably connected to the top of one side of the slide rail (45), and a locking block (482) is fixedly connected to one end of the bottom of the limiting plate (481). A groove (483) is provided on the top of one side of the slide rail (45), and the groove (483) and the locking block (482) are adapted to each other.

5. A grinding device for processing fire-fighting equipment according to claim 4, characterized in that: The replacement component (49) includes a mounting shaft (491) rotatably connected to one side of the telescopic plate (42). A mounting groove (496) is provided on one side of the mounting shaft (491). A first through groove (497) is provided inside the mounting shaft (491). Two slide rods (495) are provided on both sides inside the first through groove (497). An insert rod (498) is slidably connected to the outer surface of the slide rod (495). A connecting block (499) is inserted inside the mounting groove (496). A slot (4910) is provided inside the connecting block (499).

6. The grinding equipment for processing fire-fighting equipment according to claim 5, characterized in that: A vertical rod (492) is symmetrically fixedly connected to the outer surface of the mounting shaft (491). A hook (494) is slidably connected to the outer surface of the vertical rod (492). A first spring (493) is sleeved on the outer surface of the vertical rod (492). The hook (494) is adapted to one end of the insertion rod (498).

7. A grinding device for processing fire-fighting equipment according to claim 6, characterized in that: One side of the connecting block (499) is fixedly connected to one side of the grinding wheel (46), the interior of the first through groove (497) is connected to the interior of the mounting groove (496), the insert rod (498) is adapted to the slot (4910), and one of the mounting shafts (491) is fixedly connected to the first drive motor (47).

8. A grinding device for processing fire-fighting equipment according to claim 1, characterized in that: The top of the rotating shaft (9) is provided with a feeding assembly (5). The feeding assembly (5) includes a connecting plate (51) fixed to the top of the rotating shaft (9). Support plates (52) are fixedly connected to both sides of the connecting plate (51). A side plate (53) is fixedly connected to one side of the top of the support plate (52). A second drive motor (54) is fixedly connected to one side of the side plate (53). A disc (55) is fixedly connected to the output end of the second drive motor (54). An electric push rod (56) is fixedly connected to the middle of one side of the disc (55). A hinge seat (510) is fixedly connected to the output end of the electric push rod (56). Two hinge rods (511) are hinged inside the hinge seat (510). An arc plate (57) is hinged to one end of the hinge rod (511). Two sliding grooves (59) are symmetrically opened on one side of the disc (55). A limit rod (512) is slidably connected inside the sliding groove (59).

9. A grinding device for processing fire-fighting equipment according to claim 8, characterized in that: The support plate (52) has a support roller (513) symmetrically rotated on the top side of the side plate (53). One end of the limiting rod (512) is fixedly connected to the arc plate (57), and the other end of the limiting rod (512) is slidably inserted into the groove (59). A straightening component (58) is provided on one side inside the support plate (52).

10. A grinding device for processing fire-fighting equipment according to claim 9, characterized in that: The alignment component (58) includes a second through groove (581) opened on one side inside the support plate (52) and a trapezoidal block (586) fixed on the rear top of the base (1). A contact rod (582) is slidably connected inside the second through groove (581). A second spring (583) is fixedly connected to the bottom of the contact rod (582). A compression rod (585) is fixedly connected to the top of the second spring (583). A third spring (584) is fixedly connected to one side of the contact rod (582).

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