A saw blade disassembly and assembly device facilitating remote replacement operation

Abstract

The present invention discloses a saw blade disassembly and assembly device facilitating remote replacement operation, which includes a sawing reduction gearbox and a sawing drive. The sawing drive is fixed on the sawing reduction gearbox. The sawing reduction gearbox includes a sawing reduction gearbox output mechanism, and the sawing reduction gearbox output mechanism is fixed at the top end of the sawing reduction gearbox. The sawing reduction gearbox output mechanism is detachably connected to a saw blade assembly. In the present invention, a compression nut on the sawing assembly is nut-connected to an output shaft in the middle of the sawing reduction gearbox output mechanism. The spiral tightening direction of its thread is opposite to the rotation direction of the saw blade during sawing work, and the contact surface between the compression surface and the saw blade assembly is an annular section with as large an outer diameter as possible, which can provide a large enough tightening torque to prevent the saw blade from loosening, greatly simplifying the cumbersome steps of on-site operation. At the same time, it is completed step by step according to the process of first rough positioning and then fine positioning, and it is easy to meet the installation requirements of high positioning accuracy.

Description

Technical Field

[0001] The present invention belongs to the technical field of automation equipment, and particularly relates to a saw blade disassembly and assembly device facilitating remote replacement operation. Background Art

[0002] As is well known, circular saws are widely used in cutting materials such as stone, concrete, and metal. However, due to the rapid wear of the cutting edge during cutting and the quick reduction of sharpness, it is necessary to frequently replace the saw blade to restore the cutting sharpness. Frequent replacement of the saw blade not only reduces the production and processing efficiency but also undoubtedly increases the cutting cost. Especially when using a large circular saw, the cost is even higher, and often due to insufficient welding, the strength of the cutting edge is insufficient.

[0003] When the reprocessing plant in a nuclear power plant conducts radioactive waste treatment, in order to meet the principle of waste minimization, it is often necessary to cut and disassemble the equipment or components contaminated by radioactive substances for classification treatment according to different radioactive levels; considering the prevention of radioactive pollution diffusion and personnel radiation protection safety, the cutting and disassembling equipment usually needs to be arranged in a hot cell with shielding and sealing functions. At this time, it is difficult for personnel to approach for maintenance operations. Currently, the existing conventional sawing equipment on the market usually has the saw blade connected between the pressing flange and the transmission main shaft through multiple threaded pins, and then the pressing nuts on each threaded pin are tightened to fix the saw blade on the main shaft. The disassembly and assembly of the saw blade involve high-precision installation alignment and the tightening of multiple fastening nuts, often requiring multiple people to cooperate on-site to complete, wasting manpower and material resources. Multiple people going to the site for installation will also pose a certain threat to human safety due to the nuclear pollution radiation at the site.

[0004] Therefore, it is necessary to develop a saw blade disassembly and assembly device facilitating remote replacement operation. Summary of the Invention

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a saw blade disassembly and assembly device facilitating remote replacement operation, so as to solve the problems that the existing saw blade disassembly and assembly involve high-precision installation alignment and the tightening of multiple fastening nuts, often requiring multiple people to cooperate on-site to complete, wasting manpower and material resources, and multiple people going to the site for installation will also pose a certain threat to human safety due to the nuclear pollution radiation at the site.

[0006] To solve the above problems existing in the prior art, the present invention is realized through the following technical solutions:

[0007] A saw blade disassembly and assembly device facilitating remote replacement operation, comprising a sawing reduction gearbox and a sawing drive, wherein the sawing drive is fixed on the sawing reduction gearbox, the sawing reduction gearbox includes a sawing reduction gearbox output mechanism, the sawing reduction gearbox output mechanism is fixed at the top of the sawing reduction gearbox, the sawing reduction gearbox output mechanism includes an output shaft and transmission pins, the output shaft is located in the middle of the sawing reduction gearbox output mechanism, the transmission pins are symmetrically arranged on both sides of the output shaft, and the output shaft and the transmission pins are detachably connected to the saw blade assembly.

[0008] Further, the saw blade assembly includes a saw blade mounting flange, a cutting saw blade, a saw blade clamping flange and a compression nut, the cutting saw blade is located between the saw blade mounting flange and the saw blade clamping flange, the saw blade mounting flange through hole on the saw blade mounting flange, the cutting saw blade through hole on the cutting saw blade and the saw blade clamping flange through hole on the saw blade clamping flange correspond to each other one by one to form a through hole channel, the through hole channel includes an output shaft through hole channel and a transmission pin through hole channel, the output shaft through hole channel is located at the center of the saw blade clamping flange, the transmission pin through hole channels are uniformly arranged in the radial direction of the center of the saw blade clamping flange, and the compression nut is fixedly arranged above the output shaft through hole channel; the output shaft and the transmission pins are detachably connected to the through hole channel on the saw blade assembly.

[0009] Furthermore, the output shaft is detachably connected to the output shaft through hole channel, and the transmission pin is detachably connected to the transmission pin through hole channel.

[0010] Furthermore, the transmission pin is in clearance fit connection with the output shaft through hole channel, and the output shaft is in threaded connection with the compression nut.

[0011] Furthermore, the top end of the transmission pin further includes a transmission pin guiding end, and the top end of the output shaft further includes an output shaft guiding end.

[0012] Furthermore, a limiting sleeve is connected to the compression nut.

[0013] Furthermore, the compression nut further includes a connection interface and a hoisting interface, the connection interface is located at the top end of the compression nut, and the hoisting interface is located in the middle of the compression nut.

[0014] Furthermore, the saw blade disassembly and assembly device further includes a jaw frame for tightening or loosening the compression nut.

[0015] Further, the sawing drive is a servo motor drive.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1) In the present invention, a compression nut on the sawing component is connected to the output shaft in the middle of the output mechanism of the sawing reduction gearbox by a nut connection. The spiral tightening direction of the thread is opposite to the rotation direction of the saw blade during sawing work, and the contact surface between the compression surface and the saw blade component is an annular section with as large an outer diameter as possible, which can provide a sufficiently large tightening torque to prevent the saw blade from loosening, greatly simplifying the cumbersome steps of on-site operation. At the same time, the limit sleeve can further limit the axial movement stroke of the compression nut, ensuring that the saw blade has no axial movement during operation and guaranteeing the reliability of the entire device during operation;

[0018] 2) During the installation process of the sawing component in the present invention, it is completed step by step according to the process of rough positioning first and then fine positioning, which easily meets the installation requirements of high positioning accuracy;

[0019] 3) In the present invention, by controlling the rotation direction and torque of the sawing drive, the tightening or loosening of the compression nut can be completed at an extremely low speed; no other additional power is required, and the tightening or loosening of the compression nut can be completed by using the sawing drive, and a large compression force can be provided, with reliable operation; in addition, the entire saw blade replacement process is convenient for the operator to remotely control outdoors, with convenient operation, which can effectively reduce the necessity of personnel entering the radioactive contamination area. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 is the front view structural schematic diagram of the saw blade disassembly and assembly device of the present invention;

[0022] Figure 2 is Figure 1 the partial sectional view at A in;

[0023] Figure 3 is the perspective view structural schematic diagram of the saw blade disassembly and assembly device of the present invention;

[0024] Figure 4 is the top view structural schematic diagram of the saw blade disassembly and assembly device of the present invention;

[0025] Figure 5 is the rough positioning structural schematic diagram during the saw blade installation process of the present invention;

[0026] Figure 6 is the medium positioning structural schematic diagram during the saw blade installation process of the present invention;

[0027] Figure 7Schematic diagram of the structure during the insertion of the drive pin in the saw blade installation process of the present invention;

[0028] Figure 8 Schematic diagram of the structure during the tightening and pressing of the compression nut in the saw blade installation process of the present invention;

[0029] Meanings of the reference numerals in the figure: 1: Saw blade mounting flange; 11: Through hole of the saw blade mounting flange; 2: Cutting saw blade; 21: Through hole of the cutting saw blade; 3: Saw blade clamping flange; 31: Through hole of the saw blade clamping flange; 4: Compression nut; 41: Connection interface; 42: Lifting interface; 5: Limiting sleeve; 6: Sawing reduction gearbox; 61: Output mechanism of the sawing reduction gearbox; 611: Drive pin; 6111: Guide end of the drive pin; 612: Output shaft; 6121: Guide end of the output shaft; 7: Jaw holder; 8: Sawing drive; 9: Sawing assembly; 10: Through hole channel; 101: Through hole channel of the output shaft; 102: Through hole channel of the drive pin. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0032] Please refer to Figure 1 , Figure 2 and Figure 5 , a saw blade disassembly and assembly device facilitating remote replacement operation, including a sawing reduction gearbox 6 and a sawing drive 8, the sawing drive 8 is fixed on the sawing reduction gearbox 6, the sawing reduction gearbox 6 includes a sawing reduction gearbox output mechanism 61, the sawing reduction gearbox output mechanism 61 is fixed at the top of the sawing reduction gearbox 6, the sawing reduction gearbox output mechanism 61 includes an output shaft 612 and a drive pin 611, the output shaft 612 is located in the middle of the sawing reduction gearbox output mechanism 61, the drive pins 611 are symmetrically arranged on both sides of the output shaft 612, and the output shaft 612 and the drive pins 611 are detachably connected to the saw blade assembly 9.

[0033] Specifically, the saw blade assembly 9 includes a saw blade mounting flange 1, a cutting saw blade 2, a saw blade clamping flange 3 and a clamping nut 4. The cutting saw blade 2 is located between the saw blade mounting flange 1 and the saw blade clamping flange 3. The saw blade mounting flange through hole 11 on the saw blade mounting flange 1, the cutting saw blade through hole 21 on the cutting saw blade 2 and the saw blade clamping flange through hole 31 on the saw blade clamping flange 3 correspond one to one and form a through hole channel 10. The through hole channel 10 includes an output shaft through hole channel 101 and a transmission pin through hole channel 102. The output shaft through hole channel 101 is located at the center of the saw blade clamping flange 3, and the transmission pin through hole channel 102 is arranged radially in the center of the saw blade clamping flange 3. The clamping nut 4 is fixedly arranged above the output shaft through hole channel 101; the output shaft 612 and the transmission pin 611 are detachably connected to the through hole channel 10 on the saw blade assembly 9.

[0034] The sawing drive 8 is driven by a servo motor, and the servo motor drive 8 can adjust any rotation speed and number of rotations and perform torque control.

[0035] The clamping nut 4 on the sawing assembly 9 is connected to the output shaft 612 in the middle of the sawing reduction gearbox output mechanism 61 through a nut. The spiral tightening direction of the thread is opposite to the rotation direction of the cutting saw blade 2 during sawing operation, and the contact surface between the clamping surface and the saw blade assembly 9 is a ring cross-section with an outer diameter as large as possible, which can provide a sufficiently large tightening torque to prevent the saw blade from loosening, greatly simplifying the tedious steps of on-site operation.

[0036] Furthermore, the output shaft 612 is detachably connected to the output shaft through-hole channel 101, and the transmission pin 611 is detachably connected to the transmission pin through-hole channel 102; specifically, the transmission pin 611 is clearance-fittedly connected to the output shaft through-hole channel 101. It should be noted that the clearance is as small as possible, but it is necessary to ensure that the transmission pin 611 can enter the output shaft through-hole channel 101, and the output shaft 612 is threadedly connected to the clamping nut 4.

[0037] Furthermore, the top end of the transmission pin 611 further includes a transmission pin guide end 6112 , and the top end of the output shaft 612 further includes an output shaft guide end 6121 .

[0038] When the sawing assembly 9 is aligned with the output shaft 612 and the transmission pin 611 on the sawing reduction gearbox output mechanism 61, the output shaft guide end 6121 at the top of the output shaft 612 is first used for rough positioning, and then the transmission pin guide end 6112 at the top of the transmission pin 611 is used for intermediate positioning, and finally the entire assembly process is completed.

[0039] Furthermore, a limit sleeve 5 is connected to the compression nut 4.

[0040] The limit sleeve 5 can further limit the axial movement stroke of the compression nut 4, ensuring the reliability of the entire device during operation.

[0041] Please refer to Figure 3 , the compression nut 4 further includes a connection interface 41 and a lifting interface 42. The connection interface 41 is located at the top of the compression nut 4, and the lifting interface 42 is located in the middle of the compression nut 4. The connection interface 41 is used to connect with a power device (not shown in the figure, which can be a power arm, a numerical control crane, or other power structures in the prior art), facilitating the lifting, installation, or disassembly of the entire sawing assembly 9 by the power device.

[0042] Please refer to Figure 4 , the saw blade disassembly and assembly device further includes a jaw holder 7, and the jaw holder 7 is used to tighten or loosen the compression nut 4.

[0043] Please refer to Figures 5-8 , the specific installation working process of the saw blade disassembly and assembly device facilitating remote replacement operation is as follows:

[0044] 1) Use a power device (not shown in the figure, which can be a power arm, a numerical control crane, or other power structures in the prior art) to connect with the lifting interface 42 on the compression nut 4 in the sawing assembly 9, and then move the entire sawing assembly 9 above the output mechanism 61 of the sawing reduction gearbox. Use the output shaft guiding end 6121 at the top of the output shaft 612 on the output mechanism 61 of the sawing reduction gearbox to perform rough positioning to determine the center position of the saw blade assembly.

[0045] 2) Then perform medium positioning through the transmission pin guiding end 6112 at the top of the transmission pin 611 on the output mechanism 61 of the sawing reduction gearbox, and the transmission pin 611 is connected with the output shaft through-hole channel 101 in an interference fit. It should be noted that the interference should be as small as possible, but it should be ensured that the transmission pin 611 can enter the output shaft through-hole channel 101 to facilitate the circumferential alignment and entry when the saw blade assembly 9 is positioned.

[0046] 3) After the center of the saw blade assembly 9 is centered, next, start the sawing drive 8, drive at an extremely low speed, adjust the circumferential position, and determine the positioning of the saw blade assembly 9. During the driving process, the transmission pin 611 passes through the saw blade mounting flange through-hole 11 on the saw blade mounting flange 1, the cutting saw blade through-hole 21 on the cutting saw blade 2, and the saw blade clamping flange through-hole 31 on the saw blade clamping flange 3 in one-to-one correspondence to form a transmission pin through-hole channel 102, completing the installation and positioning process.

[0047] 4) After the saw blade assembly 9 is installed in place, the entire sawing device runs to the maintenance station. The jaws on the jaw holder 7 clamp and restrict the rotation of the compression nut 4. By controlling the rotation direction and torque of the sawing drive 8, the compression nut is tightened at an extremely low speed to complete the assembly of the entire sawing device.

[0048] It should be noted that the specific disassembly process of the saw blade disassembly and assembly device facilitating remote replacement operation is opposite to the installation process, and will not be elaborated here.

[0049] The above embodiments are only specific implementation manners of the present invention, used to illustrate the technical solutions of the present invention, rather than limiting it. The protection scope of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: any person skilled in the art within the technical scope disclosed by the present invention can still modify the technical solutions recorded in the foregoing embodiments, or can easily think of changes, or perform equivalent replacements on some of the technical features; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered within the protection scope of the present invention.

Claims

1. A saw blade disassembly and assembly device facilitating remote replacement operation, comprising a sawing reduction gearbox (6) and a sawing drive (8), wherein the sawing drive (8) is fixed on the sawing reduction gearbox (6), the sawing reduction gearbox (6) includes a sawing reduction gearbox output mechanism (61), and the sawing reduction gearbox output mechanism (61) is fixed at the top of the sawing reduction gearbox (6), characterized in that, The output mechanism (61) of the sawing speed reducer includes an output shaft (612) and drive pins (611). The output shaft (612) is located in the middle of the output mechanism (61) of the sawing speed reducer. The drive pins (611) are symmetrically arranged on both sides of the output shaft (612). The output shaft (612) and the drive pins (611) are detachably connected to the saw blade assembly (9). The saw blade assembly (9) includes a saw blade mounting flange (1), a cutting saw blade (2), a saw blade clamping flange (3), and a compression nut (4). The cutting saw blade (2) is located between the saw blade mounting flange (1) and the saw blade clamping flange (3). The saw blade mounting flange through holes (11) on the saw blade mounting flange (1), the cutting saw blade through holes (21) on the cutting saw blade (2), and the saw blade clamping flange through holes (31) on the saw blade clamping flange (3) correspond to each other one by one to form a through hole channel (10). The through hole channel (10) includes an output shaft through hole channel (101) and a drive pin through hole channel (102). The output shaft through hole channel (101) is located at the center of the saw blade clamping flange (3). The drive pin through hole channels (102) are evenly distributed in the radial direction of the center of the saw blade clamping flange (3). The compression nut (4) is fixedly arranged above the output shaft through hole channel (101). The output shaft (612) and the drive pins (611) are detachably connected to the through hole channel (10) on the saw blade assembly (9).

2. The saw blade disassembly and assembly device facilitating remote replacement operation according to claim 1, wherein, The output shaft (612) is detachably connected to the output shaft through hole channel (101), and the drive pin (611) is detachably connected to the drive pin through hole channel (102).

3. The saw blade disassembly and assembly device facilitating remote replacement operation according to claim 2, characterized in that, The drive pin (611) is connected with the output shaft through hole channel (101) in a clearance fit, and the output shaft (612) is threadedly connected with the compression nut (4).

4. The saw blade disassembly and assembly device facilitating remote replacement operation according to claim 1, wherein, The top end of the drive pin (611) further includes a drive pin guiding end (6112), and the top end of the output shaft (612) further includes an output shaft guiding end (6121).

5. The saw blade disassembly and assembly device facilitating remote replacement operation according to claim 1, wherein, A limit sleeve (5) is connected to the compression nut (4).

6. The saw blade disassembly and assembly device facilitating remote replacement operation according to claim 1, wherein The compression nut (4) further includes a connection interface (41) and a lifting interface (42). The connection interface (41) is located at the top end of the compression nut (4), and the lifting interface (42) is located in the middle of the compression nut (4).

7. The saw blade disassembly and assembly device facilitating remote replacement operation according to claim 1, characterized in that, The saw blade disassembly and assembly device further includes a jaw frame (7), and the jaw frame (7) is used to tighten or loosen the compression nut (4).

8. The saw blade disassembly and assembly device facilitating remote replacement operation according to claim 1, wherein, The sawing drive (8) is driven by a servo motor.

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