A saw blade easy dismounting locking device of a grinding wheel saw

Abstract

This utility model relates to an easy-to-disassemble and lock device for abrasive wheel saw blade, comprising an output shaft rotatably mounted inside a housing. One end of the output shaft extends out of the housing and connects to a saw blade locking assembly. The locking assembly includes a flange fixed to the output shaft. A rear clamping plate and a front clamping plate are fitted onto the flange, with the rear clamping plate fixed to the flange. The saw blade is clamped between the rear and front clamping plates. A bolt shaft is connected to the center of the output shaft end. From front to back, a locking nut, a washer, and a pressure cap are sequentially arranged on the bolt shaft. The locking nut is threaded to the front end of the bolt shaft. A pressure ring is provided on the pressure cap corresponding to the front clamping plate, abutting against the front end face of the front clamping plate. A positioning protrusion is provided on the front clamping plate corresponding to the pressure ring, extending into the inner hole of the pressure ring to form a positioning stop. This utility model enables quick disassembly and assembly, facilitates maintenance, improves work efficiency, and is suitable for harsh working conditions where there is no hydraulic power and the saw blade needs frequent replacement.

Description

Technical Field

[0001] This utility model relates to the field of cutting equipment technology, specifically to an easy-to-disassemble and lock device for abrasive wheel saw blade. Background Technology

[0002] In steel rolling mills within the metallurgical industry, abrasive wheel saw gearboxes are used for sawing steel profiles. When the abrasive wheel saw cuts the steel profile, the gearbox is driven by a motor, and the output shaft of the abrasive wheel saw carries the saw blade. The output shaft of the gearbox moves up and down with the saw blade to cut the steel profile. In high-vibration or high-impact load environments, the saw blade wears easily, requiring frequent replacements. Existing abrasive wheel saws use hydraulic pressure to lock the saw blade, which has the following drawbacks: The hydraulic locking structure is complex, difficult to disassemble and assemble, greatly increases the replacement time, reduces work efficiency, and cannot be used in working conditions without hydraulic power; When hydraulic locking is used, the hydraulic system requires regular replacement of hydraulic oil, seals and filters, resulting in high maintenance costs. Hydraulic systems require a significant energy input to operate, especially under conditions of frequent start-stop or long-term operation, where energy consumption is relatively high. Hydraulic oil leaks can cause environmental pollution, requiring additional leak prevention measures and significantly increasing costs.

[0003] Therefore, there is an urgent need to design an easy-to-disassemble and lock device for abrasive wheel saw blades, which can enable quick disassembly and assembly, convenient maintenance, and improved work efficiency. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned shortcomings and provide an easy-to-disassemble and lock device for saw blades of abrasive wheel saws, which enables quick disassembly and assembly, convenient maintenance, and improved work efficiency. It is suitable for harsh working conditions where there is no hydraulic power and saw blades need to be replaced frequently.

[0005] The purpose of this utility model is achieved as follows: A saw blade easy-to-disassemble locking device for an abrasive wheel saw includes an output shaft rotatably mounted inside a housing. One end of the output shaft extends out of the housing and connects to a saw blade locking assembly. The locking assembly includes a flange fixed to the output shaft. A rear clamping plate and a front clamping plate are fitted onto the flange. The rear clamping plate is fixed to the flange, and the saw blade is clamped between the rear and front clamping plates. A bolt shaft is connected to the center of the output shaft end. From front to back, a locking nut, a washer, and a pressure cap are sequentially arranged on the bolt shaft. The locking nut is threaded to the front end of the bolt shaft. The pressure cap has a pressure ring corresponding to the front clamping plate, which abuts against the front end face of the front clamping plate. The front clamping plate has a positioning protrusion corresponding to the pressure ring, which extends into the inner hole of the pressure ring to form a positioning stop.

[0006] Preferably, the flange is fitted onto the output shaft, and the flange is fixedly connected to the output shaft by a flat key. The outer end face of the output shaft is provided with a shaft end cap, which is embedded in the flange.

[0007] Preferably, the inner hole of the saw blade is fitted onto the support pad, and the support pad is fitted onto the flange between the front and rear clamping plates.

[0008] Preferably, the rear clamping plate is fixed to the flange by cylindrical pins, and the multiple cylindrical pins are distributed circumferentially.

[0009] Preferably, the locking nut is M60×6.

[0010] Preferably, a positioning block is provided between the gland and the outer end face of the flange. The rear end of the positioning block is embedded and fixed to the outer end face of the flange, and the front end is inserted into the corresponding receiving groove of the gland.

[0011] Preferably, the housing is provided with a through cover at the shaft extension corresponding to the output shaft. The through cover is fixedly connected to the bearing seat. An oil slinger ring is provided on the output shaft. An oil baffle ring is provided in the inner hole of the through cover corresponding to the oil slinger ring. The oil baffle ring of the through cover and the oil slinger ring form an axial seal. A labyrinth seal is provided between the front end face of the through cover and the rear end face of the flange.

[0012] The beneficial effects of this utility model are: By connecting a bolt shaft to the center of the output shaft and sequentially fitting a lock nut, washer, and pressure cap onto the bolt shaft from front to back, the pressure cap abuts against the front chuck, and the front chuck and pressure cap form a positioning stop, enabling quick disassembly and assembly while ensuring assembly accuracy. Multiple seals are installed at the shaft extension of the output shaft to prevent oil leakage, without affecting saw blade replacement, greatly improving the working efficiency of the saw blade. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of an easy-to-disassemble and lock device for a grinding wheel saw blade according to the present invention.

[0014] Figure 2 for Figure 1 A magnified view of a portion of the image.

[0015] in: Output shaft 1; housing 2; flange 3; rear clamp 4; front clamp 5; pressure cap 6; gasket 7; lock nut 8; bolt shaft 9; flat key 10; shaft end pressure cap 11; cylindrical pin 12; saw blade 13; support gasket 14; pressure ring 6.1; positioning convex ring 5.1; positioning block 15; bearing seat 16; round nut 17; through cover 18; oil slinger ring 19. Detailed Implementation

[0016] See Figure 1 and Figure 2This utility model relates to an easy-to-disassemble and lock device for a saw blade of an abrasive saw, including an output shaft 1. The output shaft 1 is rotatably mounted inside a housing 2. One end of the output shaft 1 extends out of the housing 2 and is connected to a saw blade locking assembly. The locking assembly includes a flange 3, a rear clamping plate 4, a front clamping plate 5, a pressure cap 6, a gasket 7, a locking nut 8, and a bolt shaft 9. The flange 3 is fixed to the output shaft 1 and sleeved on the output shaft 1. The flange 3 is fixedly connected to the output shaft 1 by a flat key 10. A shaft end pressure cap 11 is provided on the outer end face of the output shaft 1, and the shaft end pressure cap 11 is embedded in the flange. Inside 3, the shaft end cap 11 locks the flange 3 onto the output shaft 1 to prevent the flange 3 from moving axially. The flange 3 is fitted with a rear clamping plate 4 and a front clamping plate 5. The rear clamping plate 4 is fixed to the flange 3 by cylindrical pins 12. Multiple cylindrical pins 12 are distributed circumferentially. The saw blade 13 is clamped between the rear clamping plate 4 and the front clamping plate 5. The inner hole of the saw blade 13 is fitted onto the support gasket 14. The support gasket 14 is fitted onto the flange 3 between the front and rear clamping plates 5 and 4. The corresponding saw blade model is selected according to the size of the steel profile to be sawed, and the corresponding support gasket 14 is replaced with the saw blade 13 model. The output shaft 1 is connected to the center of the shaft end of the bolt shaft 9. The shaft end cover 11 is provided with a shaft hole corresponding to the bolt shaft 9 to facilitate the passage of the bolt shaft 9. The bolt shaft 9 is provided with a locking nut 8, a washer 7 and a cover 6 in sequence from front to back. The locking nut 8 is threaded to the front end of the bolt shaft 9. The locking nut 8 is M60×6. The cover 6 is provided with a pressure ring 6.1 corresponding to the front clamping plate 5. The pressure ring 6.1 abuts against the front end face of the front clamping plate 5. The front clamping plate 5 is provided with a positioning protrusion 5.1 corresponding to the pressure ring 6.1. The positioning protrusion 5.1 extends into the inner hole of the pressure ring 6.1 to form a positioning stop to ensure the concentricity of the cover 6 and the front clamping plate 5.

[0017] To prevent the gland 6 from rotating relative to the flange 3, a positioning block 15 is provided between the outer end face of the gland 6 and the flange 3. The rear end of the positioning block 15 is embedded and fixed to the outer end face of the flange 3, and the front end is inserted into the corresponding receiving groove of the gland 6. In the working state, the gland 6 is stationary (does not rotate) relative to the flange 3.

[0018] The output shaft 1 is rotatably mounted on a bearing seat 16 inside the housing 2 via a bearing. The bearing is limited by a round nut 17. The housing 2 is provided with a cover 18 corresponding to the shaft extension of the output shaft 1. The cover 18 is fixedly connected to the bearing seat 16. An oil slinger ring 19 is provided on the output shaft 1. The inner hole of the cover 18 is provided with an oil-blocking ring portion corresponding to the oil slinger ring 19. The oil-blocking ring portion of the cover 18 and the oil slinger ring 19 form an axial seal. A labyrinth seal is provided between the front end face of the cover 18 and the rear end face of the flange 3. The bearing lubricating oil inside the housing 2 passes through a first-stage axial seal and a second-stage labyrinth seal, which improves the sealing performance and prevents oil leakage.

[0019] When the saw blade needs to be replaced, simply loosen the locking nut 8, remove the gasket 7, the pressure plate 6, and the front clamping plate 5 in sequence, then remove the damaged saw blade, insert the new saw blade, and then install the front clamping plate 5, the pressure plate 6, the gasket 7, and the locking nut 8 in sequence. When installing the pressure plate 6, the positioning block 15 needs to be inserted into the corresponding receiving groove to prevent the pressure plate 6 from rotating. The saw blade is clamped by the front and rear clamping plates, which enables quick disassembly and assembly. This method is suitable for harsh working conditions where there is no hydraulic power and the saw blade needs to be replaced frequently.

[0020] In addition to the above embodiments, this utility model also includes other implementation methods. All technical solutions formed by equivalent transformation or equivalent substitution should fall within the protection scope of the claims of this utility model.

Claims

1. A saw blade easy-to-disassemble locking device for an abrasive wheel saw, comprising an output shaft, wherein the output shaft is rotatably mounted inside a housing, and one end of the output shaft extends out of the housing and connects to a saw blade locking assembly, characterized in that: The locking assembly includes a flange fixed to the output shaft. A rear clamp and a front clamp are fitted onto the flange. The rear clamp is fixed to the flange. The saw blade is clamped between the rear clamp and the front clamp. A bolt shaft is connected to the center of the output shaft end. A locking nut, a washer, and a pressure cap are sequentially arranged on the bolt shaft from front to back. The locking nut is threaded to the front end of the bolt shaft. A pressure ring is provided on the pressure cap corresponding to the front clamp, and the pressure ring abuts against the front end face of the front clamp. A positioning protrusion is provided on the front clamp corresponding to the pressure ring, and the positioning protrusion extends into the inner hole of the pressure ring to form a positioning stop.

2. The saw blade easy-to-disassemble locking device for an abrasive wheel saw according to claim 1, characterized in that: The flange is fitted onto the output shaft and is fixedly connected to the output shaft by a flat key. The outer end face of the output shaft is provided with a shaft end cap, which is embedded in the flange.

3. The saw blade easy-to-disassemble locking device for an abrasive wheel saw according to claim 1, characterized in that: The inner hole of the saw blade is fitted onto the support pad, and the support pad is fitted onto the flange between the front and rear clamping plates.

4. The saw blade easy-to-disassemble locking device for an abrasive wheel saw according to claim 1, characterized in that: The rear clamping plate is fixed to the flange by cylindrical pins, with multiple cylindrical pins distributed circumferentially.

5. The saw blade easy-to-disassemble locking device for an abrasive wheel saw according to claim 1, characterized in that: The lock nut is M60×6.

6. The saw blade easy-to-disassemble locking device for an abrasive wheel saw according to claim 1, characterized in that: A positioning block is provided between the gland and the outer end face of the flange. The rear end of the positioning block is embedded and fixed to the outer end face of the flange, and the front end is inserted into the corresponding receiving groove of the gland.

7. The saw blade easy-to-disassemble locking device for an abrasive wheel saw according to claim 1, characterized in that: The housing is provided with a through cover at the shaft extension corresponding to the output shaft. The through cover is fixedly connected to the bearing seat. An oil slinger ring is provided on the output shaft. An oil baffle ring is provided in the inner hole of the through cover corresponding to the oil slinger ring. The oil baffle ring of the through cover and the oil slinger ring form an axial seal. A labyrinth seal is provided between the front end face of the through cover and the rear end face of the flange.

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