CN112719422B

CN112719422B - Power type cutting device

Info

Publication number: CN112719422B
Application number: CN202011629517.9A
Authority: CN
Inventors: 常松; 陈述清; 马军; 闵玉龙; 赵铮; 陈明; 彭松贤; 梅增胜; 余秋平; 申昌荣
Original assignee: China General Nuclear Power Corp; CGN Power Co Ltd; China Nuclear Power Operation Co Ltd
Current assignee: China General Nuclear Power Corp; CGN Power Co Ltd; China Nuclear Power Operation Co Ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2022-09-20
Anticipated expiration: 2040-12-30
Also published as: CN112719422A

Abstract

The invention relates to a power type cutting device, which comprises a rotary table, a driving mechanism, a cutting tool, an axial feeding mechanism and a radial feeding mechanism, wherein the rotary table is sleeved on a piece to be cut and can be rotatably arranged, the driving mechanism is connected with the rotary table and drives the rotary table to rotate, the axial feeding mechanism is arranged on the rotary table and is connected with the cutting tool to drive the cutting tool to feed in the axial direction of the rotary table, and the radial feeding mechanism is arranged on the rotary table and is connected with the cutting tool to drive the cutting tool to feed in the radial direction. The power type cutting device can ensure the quality after cutting, effectively reduce the quality defect caused by manual cutting of field personnel, is suitable for cutting the sealing welding lip with poor partial space position, and has the advantages of convenience and quickness in use, high stability and high cutting efficiency.

Description

Power type cutting device

Technical Field

The present invention relates to cutting devices, and more particularly, to a powered cutting apparatus.

Background

At present, for the cutting of a valve, a cutting tool which is usually adopted is mainly a saw blade or a manual cutting tool, the manual cutting efficiency is extremely low, the size and the surface state of a cut bevel are influenced by the skill level of personnel, the site space position and the environmental dose, the cutting quality is difficult to control, the sealing surface of the valve after cutting can not meet the requirement of secondary welding and the valve needs to be replaced again. The sealing welding leakage appears for many times due to cutting problems and the like in many bases, and the operation of a unit is influenced.

Disclosure of Invention

The invention aims to provide an improved power type cutting device.

The technical scheme adopted by the invention for solving the technical problems is as follows: construct a power type cutting device, including the cover locate treat on the cutting member and the carousel of rotatable setting, with the drive is connected to the carousel pivoted actuating mechanism, cutting tool, set up in on the carousel and with cutting tool connects in order to drive cutting tool is in the axial feed mechanism that feeds in the axial of carousel, set up in on the carousel and with cutting tool connects in order to drive cutting tool feeds in the radial feed mechanism that feeds in the radial direction.

Preferably, the turntable comprises a turntable body and an outer gear ring which is connected with the turntable body and drives the turntable body to rotate;

the driving mechanism comprises a driving gear meshed with the outer gear ring and a pneumatic motor connected with the driving gear to drive the driving gear to rotate.

Preferably, the turntable further comprises a guide assembly sleeved on the outer gear ring and the periphery of the disc body to guide the rotation of the outer gear ring and the disc body.

Preferably, the guide assembly comprises a ball guide.

Preferably, the axial feeding mechanism comprises a support, a first planet wheel arranged on the support, a first screw rod which is connected with the first planet wheel, penetrates through the support along the axial direction of the rotary table and is driven by the first planet wheel to rotate, and a sliding block which is arranged on the first screw rod in a sliding manner, is driven by the first screw rod to reciprocate on the support along the axial direction of the rotary table;

the cutting tool is arranged on one side of the sliding block, which is opposite to the piece to be cut, in a protruding mode.

Preferably, the radial feeding mechanism comprises a second planet wheel arranged on the side wall of the support, and a second screw rod which is connected with the second planet wheel, penetrates through the support along the radial direction of the turntable and is driven by the second planet wheel to rotate;

the sliding block is slidably arranged on the second screw rod and driven by the second screw rod to reciprocate along the radial direction of the rotary table.

Preferably, the device further comprises an axial triggering mechanism for triggering the axial feeding mechanism to feed;

the axial trigger mechanism comprises a first poke rod which is arranged opposite to the first planetary gear and used for poking the first planetary gear to rotate under the pressing of external force.

Preferably, the device further comprises a radial trigger mechanism for triggering the feeding of the radial feeding mechanism;

the outer side wall of the rotary table is provided with a vertical plate, and the vertical plate extends along the axial direction of the rotary table;

the radial trigger mechanism comprises a second poke rod which is arranged on the vertical plate in a penetrating mode in the radial direction of the rotary disc and can be pressed to poke the second planet wheel to rotate under the pressing of external force.

Preferably, the cutting machine further comprises a first centering mechanism which is detachably arranged on the rotary table to center the to-be-cut piece.

Preferably, the first centering mechanism further comprises a support plate detachably arranged on the turntable, a guide ring arranged on the support plate and capable of being sleeved on the periphery of the piece to be cut, and two first centering frames which penetrate through the side wall of the guide ring, can rotate along the circumferential direction of the guide ring and are mutually matched to center the piece to be cut;

the side wall of the guide ring is provided with a guide groove for the first centering frame to rotate and guide along the circumferential direction of the guide ring;

the two first centering frames are oppositely arranged.

Preferably, each first centering frame comprises a first frame body, a Y-shaped frame arranged at one end of the first frame body and penetrating into the inner side of the guide ring from the guide groove, and a first adjusting piece penetrating into the first frame body to drive the Y-shaped frame to reciprocate along the radial direction of the guide ring.

Preferably, the cutting machine further comprises a second centering mechanism which is detachably arranged on the rotary table to center the to-be-cut piece.

Preferably, the second centering mechanism comprises two second centering frames which are detachably arranged on the turntable, oppositely arranged and matched with each other.

Preferably, each second centering frame comprises a second frame body, a clamping hand arranged at one end of the second frame body and arranged along the radial direction of the rotary table so as to clamp the periphery of the piece to be cut, and a second adjusting piece arranged in the second frame body in a penetrating manner, wherein one end of the second adjusting piece is connected with the clamping hand so as to drive the clamping hand to reciprocate along the radial direction of the rotary table.

Preferably, the cutting device further comprises at least one group of clamping mechanisms arranged on the rotary table to clamp and fix the to-be-cut piece.

Preferably, each group of clamping mechanisms comprises two clamping jaw assemblies which are arranged at the bottom of the rotary table and reciprocate along the radial direction of the rotary table;

the two clamping jaw assemblies are oppositely arranged so as to clamp and fix the piece to be cut through relative movement.

The power type cutting device has the following beneficial effects: the power type cutting device drives the cutting tool to rotate through rotation of the turntable, and drives the cutting tool to feed in the axial direction and the radial direction through the axial feeding mechanism and the radial feeding mechanism so as to cut a to-be-cut piece.

Drawings

The invention will be further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic view of the assembly of a powered cutting apparatus with a work piece to be cut in accordance with certain embodiments of the present invention;

FIG. 2 is a cross-sectional view of the powered cutting apparatus of FIG. 1 assembled with a workpiece to be cut;

FIG. 3 is a schematic view of the power type cutting apparatus shown in FIG. 1;

FIG. 4 is a schematic view of the powered cutting apparatus of FIG. 3 at another angle;

FIG. 5 is an exploded view of the turntable of the powered cutting apparatus of FIG. 3;

FIG. 6 is a schematic view of the axial feed mechanism of the powered cutting apparatus of FIG. 3;

fig. 7 is a cross-sectional view of an axial feed mechanism of the powered cutting apparatus of fig. 6.

Detailed Description

For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

Fig. 1 and 2 show some preferred embodiments of the powered cutting apparatus of the present invention. This power type cutting device can treat cutting member 200 and cut, should treat cutting member can be the valve, specifically, this power type cutting device can be used to cut and groove preparation to valve seal lip position welding meat, can guarantee the valve seal lip welding quality after the cutting, can reduce field personnel operating time again, and be applicable to the relatively poor seal welding valve of part spatial position, guarantee the high quality nature of on-the-spot execution, the valve leakage that the valve leads to because of seal welding cutting quality problems during the operation has been avoided. In some embodiments, the power type cutting device can meet the requirements of the valve on-line cutting action, can also finish machining operations of pipe end excircle and chamfer end surfaces by replacing other accessories, has better function expansibility, and can be widely applied to the work of on-line cutting of valve lip edge welding, machining of pipe section excircle and chamfer end surfaces and the like in the industrial production process. The power type cutting device has the advantages of convenience in use, high stability and high cutting efficiency.

As shown in fig. 1 and 2, in some embodiments, the power type cutting apparatus may include a turntable 10, a driving mechanism 20, a cutting tool 50, an axial feeding mechanism 60, and a radial feeding mechanism 70. In some embodiments, the turntable 10 can be sleeved on the periphery of the workpiece 200, and the turntable 10 can rotate around the workpiece 200. The driving mechanism 20 can be connected to the turntable 10, and the driving mechanism 20 can be used to drive the turntable 10 to rotate. The cutting tool 50 can be disposed above the turntable 10 and can be connected to the axial feeding mechanism 60 and the radial feeding mechanism 70, the cutting tool 50 can rotate along with the turntable 10, and can be driven by the axial feeding mechanism 60 to feed along the axial direction of the turntable 10 and can be driven by the feeding mechanism 70 to feed along the radial direction of the turntable 10, thereby achieving continuous or intermittent cutting of the piece to be cut 200. The axial feeding mechanism 60 can be disposed on the rotary table 10, can rotate along with the rotary table 10, and can be connected to the cutting tool 50, so as to drive the cutting tool 50 to feed in the axial direction of the rotary table 10. The radial feeding mechanism 70 can be disposed on the turntable 10 and can rotate along with the turntable 10, so as to drive the cutting tool 50 to feed in a radial direction.

As shown in fig. 3-5, further, in some embodiments, the turntable 10 may include a guide assembly 11, a disk 12, an outer ring gear 13, and a fixed ring 14. The guiding component 11 is sleeved on the outer gear ring 13 and the periphery of the tray body 12, and the guiding component 11 can be used for guiding the outer gear ring 13 and the tray body 11 to rotate. In some embodiments, the outer gear ring 13 may be disposed in the guiding component 11, and may be connected to the driving mechanism 20, and may be rotated by the driving mechanism 20. The disk body 12 can be disposed on the outer gear ring 13, and can be fixedly connected to the outer gear ring 13, and can rotate with the outer gear ring 13. The fixing ring 14 may be disposed on the outer ring gear 13 for connecting the outer ring gear 13 with the guiding component 11.

Further, the guiding component 11 may be a ball-bearing guiding track, in some embodiments, the guiding component 11 may include an outer casing 111, an inner ring 112, and a mounting portion 113, the outer casing 111 may be sleeved on the outer periphery of the outer gear ring 13, the inner ring 112 may be disposed in the outer gear ring 13 and may serve as a bearing for the outer gear ring 13, so as to facilitate the rotation of the outer gear ring 13, and a contact surface between the inner ring 112 and the outer gear ring 13 may be provided with a plurality of balls along a circumferential direction so as to facilitate the rotation of the outer gear ring 13. The mounting portion 113 may be disposed protruding from an outer sidewall of the outer casing 111, and may be disposed in communication with the outer casing 111 for mounting the driving mechanism 20. In some embodiments, a vertical plate 1111 may be disposed on an outer side wall of the rotary disc 10, and in particular, the vertical plate 1111 may be disposed on an outer side wall of the outer casing 111 and may be disposed to extend along an axial direction of the rotary disc 10, the vertical plate 1111 may be multiple, and the multiple vertical plates 1111 may be disposed at intervals along a circumferential direction of the rotary disc 10.

Further, in some embodiments, the tray 11 may be annular, and may be sleeved on the periphery of the to-be-cut member 200, and may rotate around the to-be-cut member 200 under the driving of the outer ring 13. The disc 11 may be used to mount the axial feed mechanism 60 and the radial feed mechanism 70.

Further, in some embodiments, the outer ring gear 13 may be disposed in the outer casing 111, and may be sleeved on the outer periphery of the inner ring 112, and may rotate around the inner ring 112. The external gear ring 13 can be engaged with the driving mechanism 20 and can be driven to rotate by the driving mechanism 20.

Further, in some embodiments, the driving mechanism 20 may include a driving gear 22 and a pneumatic motor 21, the driving gear 23 may be installed in the installation portion 113 and may be engaged with the outer gear 13, and the driving gear 23 may rotate the outer gear 13. The pneumatic motor 21 can be connected to the driving gear 22, the pneumatic motor 21 can be located on the mounting portion 113, the driving shaft thereof can be connected to the driving gear 22, and the pneumatic motor 21 can be used to drive the driving gear 22 to rotate. The driving gear 22 is driven to rotate by the pneumatic motor 21, so that manual driving can be replaced, and the pneumatic motor has the advantages of strong power, safety and reliability, and can reduce the labor intensity of field operators to the maximum extent. Through the gear transmission technology, the structure of the tool can be more compact, and meanwhile stable transmission and better durability can be obtained.

In some embodiments, a motor mounting seat can be disposed on the mounting portion 113, and the motor mounting seat can include a seat body, a first bevel gear disposed on the seat body, and a second bevel gear disposed on the seat body; the seat body can be provided with a first mounting hole and a second mounting hole; the first mounting hole can be mounted at the top of the seat body, and the second mounting hole can be arranged on the side wall of the seat body and can be connected with the second mounting hole. The first bevel gear can be disposed in the first mounting hole, and the first bevel gear can be connected to the driving gear 22 to drive the driving gear 22 to rotate. The second bevel gear can be disposed in the second mounting hole and can be engaged with the first bevel gear. The pneumatic motor 21 can be inserted into the first mounting hole and connected to the first bevel gear to drive the first bevel gear to rotate, and further drive the driving gear 22 to rotate, but it should be understood that in other embodiments, the pneumatic motor 21 can also be inserted into the second mounting hole and connected to the second bevel gear to drive the second bevel gear to rotate, and further drive the first bevel gear to rotate, and further drive the driving gear 22 to rotate. By arranging the motor mounting seat, the motor can be mounted at multiple positions and multiple angles, the mounting and the reference of a field are facilitated, and the limitation of peripheral equipment on the field mounting space of the device is avoided. In some embodiments, the turntable 10 and the motor mounting base can be made of high-strength aluminum alloy materials, and have the lightest weight while ensuring the overall rigidity of the parts.

In some embodiments, the pneumatic motor has the following parameters:

diameter of motor	Length of motor	Air pressure	Air consumption	Maximum torque output
					50mm	200mm	4-6bar	≥1000L/min	≥100NM

From the above data, it can be seen that pneumatic power can easily provide operating torque outputs in excess of 100NM, with sufficient power to fully meet the operating needs at the site. In some embodiments, the pneumatic power has a small volume and powerful power; can be operated continuously for a long time, and is not easy to generate heat; simple and convenient control.

Further, in some embodiments, the powered cutting apparatus may also include a first centering mechanism 30. The first centering mechanism 30 is detachably disposed on the turntable 10, and can be used for centering the tape cutter 200. In some embodiments, the first centering mechanism 30 may include a support plate 31, a guide ring 32, and two first centering brackets 33.

In some embodiments, the supporting plate 31 is detachably disposed on the rotating disc 10, and specifically, the supporting plate 31 can be disposed on a plurality of vertical plates 1111 of the rotating disc 10, and can be detachably connected to each vertical plate 1111 respectively. In some embodiments, the number of the vertical plates 1111 can be three, and the supporting plate 31 can be substantially triangular. The support plate 31 may be used to support the guide ring 32.

Further, in some embodiments, the guide ring 32 may be substantially cylindrical. The guide ring 32 can be disposed on the support plate 31 and can be located in the middle of the support plate 31, the guide ring 32 can be sleeved on the periphery of the to-be-cut piece 300, the sidewall of the guide ring 32 can be provided with a guide groove 321 for the first pair of middle frames 33 to penetrate through and for the first pair of middle frames 33 to rotate in the circumferential direction, and the guide groove 321 can be an arc-shaped groove and can be disposed along the circumferential direction of the guide ring 32. The guide groove 321 may guide the first centering frame 33 to rotate and may limit the angle of rotation of the first centering frame 33. In some embodiments, the two guide slots 321 may be symmetrically disposed on two opposite sides of the guide ring 32, and may be disposed in one-to-one correspondence with the two first centering frames 33. In some embodiments, the guide ring 31 may be made of a unitary structure with the support plate 31, and the guide ring 31 may be made of a high strength aluminum alloy material, while ensuring the overall rigidity of the part and having the lowest weight.

In some embodiments, the two first centering racks 33 can respectively penetrate into the guide ring 32 from the guide slots 321, and can respectively rotate along the circumferential direction of the guide ring 32, so that the position of the to-be-cut piece can be adjusted by rotation, and centering of the to-be-cut piece is facilitated. The two first centering frames 33 may be disposed opposite to each other and may be engaged with each other. In some embodiments, the two first centering racks 33 are substantially identical in structure. In some embodiments, each of the first centering frames 33 may include a first frame body 331, a Y-shaped frame 332, and a first adjusting member 333. The first frame 331 can be disposed on the outer sidewall of the guiding ring 32, and can be located at the guiding groove 321, and the Y-shaped frame 332 can be disposed at one end of the first frame 331, can penetrate into the guiding ring 32 from the guiding groove 321, can be disposed along the radial direction of the guiding ring 32, and can be used to be clamped at the upper connecting column of the to-be-cut piece 200. The Y-shaped holders 332 of the two first centering holders 33 may be disposed opposite to each other and may be engaged with each other. In some embodiments, the first adjusting member 333 may be disposed in the first frame body 331 and may have one end connected to the Y-shaped frame 332, and specifically, the first adjusting member 333 may be an adjusting screw rod that may be screwed with the first frame body 331. The first adjusting member 33 is rotated to drive the Y-shaped frame 332 to reciprocate along the radial direction of the guide ring 32, so as to adjust the relative distance between the Y-shaped frame 332 and the member to be cut 200.

Further, in some embodiments, the first centering mechanism 30 is detachably connected to the turntable 10, so that the first centering mechanism 30 can be detached from the turntable 10 after the to-be-cut piece 200 is centered. Specifically, the supporting plate 31 of the first centering mechanism 30 can be detachably connected to the vertical plate 1111 of the turntable 10 by providing a fastening assembly. Of course, it is understood that in other embodiments, the first centering mechanism 30 can also be fixedly connected to the turntable 10. In some embodiments, the first centering mechanism 30 may be omitted.

Further, in some embodiments, the power type cutting apparatus may further include a second centering mechanism 40, the second centering mechanism 40 being detachably disposed on the turntable 10, the second centering mechanism 40 being configured to re-center the work piece 200 to be cut. By detachably connecting the second centering mechanism 40 to the turntable 10, the second centering mechanism 40 can be removed after the to-be-cut piece 200 is centered, and specifically, the second centering mechanism 40 can be detachably connected to the turntable 10 by arranging a fastening assembly. Of course, it is understood that in other embodiments, the second centering mechanism 40 may be fixedly connected to the turntable 10. In other embodiments, the second centering mechanism 40 may be omitted.

In some embodiments, the second centering mechanism 40 may include two second centering racks, which may be substantially identical in structure. In some embodiments, the two second centering racks are detachably disposed on the turntable 10, are located in a radial direction of the turntable 10, and can be disposed oppositely, and the two second centering racks can cooperate with each other to radially center the piece to be cut 100. The two second centering racks may include a second rack body 41, a clamping hand 42, and a second adjusting member 43. In some embodiments, the second frame 41 may be disposed on the turntable 10, the clamping handle 42 may be U-shaped, the clamping handle 42 may be disposed at one end of the second frame 41 and may be disposed along a radial direction of the turntable 10, the clamping handle 42 may be clamped at the periphery of the to-be-cut piece 200, and the clamping handles 42 of the two second centering frames may be disposed opposite to each other and may be matched with each other. In some embodiments, the second adjusting member 43 can be disposed in the second frame 41 and one end of the second adjusting member 43 is connected to the clamping arm 42, and the second adjusting member 43 can be used for driving the clamping arm 42 to reciprocate along the radial direction of the turntable 10. In some embodiments, the second adjusting member 43 may be a screw, the second adjusting member 43 may be screwed with the second frame 41, and the second adjusting member 43 may be rotated to drive the clamping handle 42 to reciprocate along the radial direction of the turntable 10.

By using the first centering structure 30 and the second centering structure 40 to perform two-point centering from the axial direction, the pipe valve is integrally cast due to the to-be-cut piece 200, so that the pipe valve is irregular in shape and has no good datum surface for clamping for a cutting device. In order to better and more quickly complete axial centering, a two-point centering technology is adopted, and a machined reference surface A on a valve body welding seam and a valve rod excircle reference surface B in the middle of an upper yoke are respectively used as two positioning reference surfaces.

Before the cutting operation, the diameter of the reference surface (circular arc reference surface) at the upper end of the weld of the valve body and the diameter of the valve stem at the upper portion (axially centering the upper support position) are measured in advance, and then the second centering structure 40 and the first centering frame 30 are subjected to size setting in advance.

When the power type cutting device is installed on site, the second centering frame 40 is quickly connected with the reference position of the machine body, the arc-shaped surface at the front end of the adjusting part of the second centering frame 40 is attached to the arc-shaped reference surface A of the valve body, after the proper centering position of the adjusting part of the first centering frame 30 is found in the circumferential direction, the adjusting part of the first centering frame 30 can be pulled to the preset reference position, and the Y-shaped frame 332 at the front end of the adjusting part of the first centering frame 30 is attached to the upper support position B in axial centering of the valve rod. After the Y-shaped frame 332 and the clamping hands 42 are attached to the corresponding reference surfaces, the Y-shaped frame 332 and the clamping hands 42 opposite to the first centering frame 30 and the second centering frame 40 are attached to the corresponding reference surfaces firmly, after the work is completed, the power type cutting device is shaken in the horizontal direction, and the machine body is not obviously shaken. At this time, the power type cutting device and the valve body are clamped in the axial alignment. The two-point axial centering technology can finish the centering of the power type cutting device and the valve body in the axial direction in a short time, and is very suitable for the working condition of the pipe valve with extremely irregular appearance structure.

Further, in some embodiments, the cutting tool 50 may be wedge-shaped, and the cutting tool 50 may be located on a side of the axial feed mechanism 60 disposed opposite the work piece 200. In some embodiments, the cutting tool 50 may be a metal blade, although it is understood that in other embodiments, the cutting tool 50 may not be limited to being wedge-shaped. In some embodiments, the cutting tools 50 may be multiple, and the multiple cutting tools 50 may be disposed in one-to-one correspondence with the axial feeding mechanism 60.

As shown in fig. 1, 6 and 7, further, in some embodiments, the axial feeding mechanism 60 may be multiple, and the multiple axial feeding mechanisms 60 may be disposed at intervals along the circumferential direction of the rotary table 10. It is understood that in some embodiments, the axial feed mechanism 60 can be two, and of course, in other embodiments, the axial feed mechanism 60 can not be limited to two. In some embodiments, the axial feed mechanism 60 may include a bracket 61, a first starwheel 62, a first lead screw 63, and a slider. In some embodiments, the first bracket 61 may be in a shape of a arched door, and the first bracket 61 may be disposed on the turntable 10 and may be connected to the turntable 10 by a fastening assembly. The middle of the first bracket 61 can be provided with a central through hole for the first lead screw 63 to penetrate. In some embodiments, the first bracket 61 may be provided with a guiding through slot 611, and the guiding through slot 611 may be used for slidably guiding the sliding block 64. The guide groove 611 may be provided to penetrate in the thickness direction of the first bracket 61. In some embodiments, the first planet gear 62 can be disposed on top of the support 61, the first planet gear 62 can be rotatably disposed, and in some embodiments, the first planet gear 62 can lie flat on top of the support 61. The first lead screw 63 can be disposed in the bracket 61, specifically, the first lead screw 63 can be disposed in a central through hole of the bracket 61, and the first lead screw 63 can be connected to the first planetary gear 62 and can be disposed along the axial direction of the turntable 10. The first planetary gear 62 rotates to drive the first lead screw 63 to rotate. In some embodiments, the sliding block 64 is slidably sleeved on the first lead screw 63 and is screwed with the first lead screw 63, so that the first lead screw 63 is driven by the rotation of the first lead screw 63 to reciprocate on the bracket 61 along the axial direction of the rotary disc 10. In some embodiments, the cutting tool 50 may be disposed to protrude from a side of the slider 64 disposed opposite to the to-be-cut member 200. The slide block 64 can reciprocate along the axial direction of the rotary table 10, and further can be adjusted according to the cutting position of the piece 200 to be cut.

Further, in some embodiments, the powered cutting apparatus may also include an axial trigger mechanism that may be used to trigger the axial feed mechanism 60 to feed. In some embodiments, the axial trigger mechanism may be disposed on the supporting plate 31, the axial trigger mechanism may include a first pulling rod, the first pulling rod may pass through the supporting plate 31, the first pulling rod may be disposed opposite to the first planetary gear 62, and the first pulling rod may be disposed by pressing. When the turntable 10 drives the axial feeding mechanism 60 to rotate, the first poke rod is pressed by an external force, and the first poke rod can be clamped into the tooth socket of the first planet wheel 62 under the pressing of the external force, so that the first planet wheel 62 can be poked to rotate. It is understood that in other embodiments, the axial trigger mechanism may not be limited to being disposed on the support plate 31.

Further, in some embodiments, the radial feeding mechanism 70 may be disposed on the axial feeding mechanism 60, and may drive the axial feeding mechanism 60 to feed along the radial direction of the turntable 10, and further drive the cutting tool 50 to feed along the radial direction of the turntable 10. Further, in some embodiments, the radial feed mechanism 70 may include a second planet gear 71 and a second lead screw 72. The second planetary gear 71 can be disposed on a side wall of the bracket 61, and specifically, the second planetary gear 71 can be rotatably disposed on an outer side wall of the bracket 61. The second lead screw 72 can be inserted into the bracket 61 along the radial direction of the rotary table 10, and can be connected with the second planet wheel 71, and can be driven by the second planet wheel 71 to rotate. Specifically, the sliding block 64 may be sleeved on the second lead screw 72 and may be slidably disposed with the second lead screw 72, specifically, in some embodiments, the sliding block 64 may be screwed with the second lead screw 72, and the second lead screw 72 may rotate to drive the sliding block 62 to reciprocate in the radial direction of the turntable 10, so as to drive the cutting tool 50 to reciprocate in the radial direction of the turntable 10.

Further, in some embodiments, the powered cutting apparatus may also include a radial trigger mechanism 80. The radial trigger mechanism 80 may be used to cause the radial feed mechanism 60 to feed radially. In some embodiments, the radial triggering mechanism 80 may include a second poke rod, and specifically, the second poke rod may be disposed through the vertical plate 1111 in the radial direction of the rotary disc 10, and may be pressed, when the rotary disc 10 drives the radial feeding mechanism 60 to rotate, the second poke rod is pressed by an external force, so as to poke the second planet gears 71 to rotate, and further drive the second lead screw 72 to rotate, thereby driving the sliding block 64 to reciprocate in the radial direction of the rotary disc 10.

As shown in fig. 3 and 4, further, in some embodiments, the power cutting apparatus further includes at least one set of clamping mechanism 90, the at least one set of clamping mechanism 90 can be disposed on the turntable 10, in some embodiments, the at least one set of clamping mechanism 90 can be two sets, and it is understood that in other embodiments, the at least one set of clamping mechanism 90 can not be limited to two sets. The clamping mechanism 90 can be disposed on the turntable 10, and the clamping mechanism 90 can be used to clamp and fix the workpiece 200 to be cut. In some embodiments, each set of clamping mechanism 90 may include two clamping jaw assemblies 91, and the two clamping jaw assemblies 91 may be disposed at the bottom of the turntable 10, may be disposed opposite to each other, and may reciprocate along the radial direction of the turntable 10. In some embodiments, the two jaw assemblies 91 can clamp and fix the work piece 200 by relative movement. In some embodiments, the jaw assembly 91 may include a jaw body 911, a fixing block 912, and a first ram 913. The fixing block 912 may be disposed on the bottom surface of the turntable 10, the clamping jaw body 911 may be disposed at one end of the fixing block 912 and may extend into the central through hole of the turntable 10 for clamping the tape cutting element 200, the first rod 913 may penetrate through the fixing block 912, and one end of the first rod may be connected to the clamping jaw body 911 for adjusting the relative position between the clamping jaw body 911 and the to-be-cut element 200. In some embodiments, the first rod 913 can be a screw rod, which can be screwed with the fixing block 912, and the jaw body 911 can be driven to move in a radial direction by rotating the first rod 913. Further, in some embodiments, the clamping jaw assembly 91 may be provided with a positioning structure, which may be used to position the workpiece 200 to be cut. In some embodiments, the positioning structure may include a positioning member 914 and a second push rod 915 disposed on the fixing block 912 and telescopically disposed, and one end of the second push rod 915 is connected to the positioning member 914, the second push rod 915 may be disposed on a boss of the fixing block 912 and may be screwed to the boss, and the second push rod 915 may drive the positioning member 914 to reciprocate along the direction of the to-be-cut piece 200. After the workpiece 200 is centered, the workpiece is clamped and fixed by the clamping mechanism 90, and then the first centering mechanism 30 and the second centering mechanism 40 are removed.

The dynamic seal welding and cutting tool can finish the processing of the excircle of the welding seam and the welding seam after one-time clamping. The equipment is additionally provided with a cutting knife 50, and the cutting knife 50 can be a scraper knife or a slotting knife.

Welding and cutting an outer circle lip: the outer circle lip welding cutting triggers the radial trigger mechanism 70 to feed the scraper to the edge of the outer circle in the radial direction, then triggers the axial trigger mechanism 60 to feed and cut the scraper along the direction of the valve rod, and after the outer circle is cut by the scraper, the scraper is retracted to the position of not contacting the valve body by using the equipment turntable.

Cutting a welding seam: the axial trigger mechanism 60 is triggered to move the slotting cutter to the lip center line position, and the starting equipment triggers the radial trigger mechanism 70 to feed and cut the slotting cutter along the radial direction of the flange in the valve body until the cutting is finished. The cutter does not need to be replaced midway. The working efficiency can be better improved.

Compared with the original manual cutting tool, the power type cutting device has irreplaceable advantages and has the following advantages:

1. the compressed air is adopted to drive the pneumatic motor to replace the manual drive, so that the power is strong, and the pneumatic motor is safe and reliable. The labor intensity of field operators can be reduced to the maximum extent.

2. The main body part of the power type cutting device adopts an integral structure design and has better structural rigidity. 80% main structural component all adopts high strength aluminum alloy material to make, under the prerequisite that satisfies intensity, realizes lightweight design.

3. The power transmission adopts a gear transmission technology, so that the structure of the tool is more compact, stable transmission can be obtained, and the durability is better.

4. A two-point axial centering structure is designed, the reference setting of the axial centering structure can be completed on line, and the on-site debugging time is reduced. By using the structure, the axial centering work during the clamping of the power type cutting device can be quickly completed on site.

5. The equipment is clamped once, and can finish the excircle processing of the welding seam, the welding seam cutting and the groove operation.

6. The axial and radial feeding structure is designed, and the continuous and intermittent cutting operation in the axial or radial direction can be completed by controlling the trigger device.

7. The motor can be installed in multiple positions and multiple angles, so that the motor is convenient to install and apply on site, and the limitation of peripheral equipment on the site installation space position of the device is avoided.

8. In order to enhance the stability of the equipment during cutting, a two-body-position clamping structure design is adopted between the power type cutting device and the valve body, so that the clamping rigidity is improved, and the stability and the reliability of the equipment during cutting can be ensured.

9. Because the tool has better stability, the cutting operation with higher quality can be completed. The machined surface can realize lower roughness and better dimensional accuracy.

10. The power type cutting device can meet the requirements of cutting operations with various requirements, including processing of an excircle, cutting off, a groove, an end face and the like, can be realized by replacing different cutters and accessories, and has better functional coverage.

11. The rotating speed of the power type cutting device during cutting is adjustable, and the power type cutting device can be adjusted according to the controlled air flow.

The contribution of this application to the productivity of the power plant:

compared with the traditional sealing welding cutting tool, the dynamic cutting device can save 6 man-hours per valve (from 4H to 1H, saving 3H and 2 man-hours), more than 30 valves can be expected to be repaired and combed in each overhaul, and 180 man-hours per unit can be saved in maintenance.

Partial valve maintenance is in a critical path, the benefit is more obvious, and the critical path time is reduced by 20H according to 4 valves each year.

And part of valves are in a high-level environment, so that the irradiation dose of personnel can be greatly reduced.

The state of the cut groove meets the welding requirement, the welding quality is greatly improved, and events such as machine set withdrawal, machine halt and the like are avoided.

It should be understood that the above examples only represent the preferred embodiments of the present invention, and the description is specific and detailed, but not construed as limiting the scope of the present invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several changes and modifications can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the claims of the present invention.

Claims

1. The power type cutting device is characterized by comprising a rotary table (10) which is sleeved on a piece to be cut (200) and can be arranged in a rotating mode, a driving mechanism (20) which is connected with the rotary table (10) and drives the rotary table (10) to rotate, a cutting tool (50), an axial feeding mechanism (60) which is arranged on the rotary table (10) and connected with the cutting tool (50) to drive the cutting tool (50) to feed in the axial direction of the rotary table (10), and a radial feeding mechanism (70) which is arranged on the rotary table (10) and connected with the cutting tool (50) to drive the cutting tool (50) to feed in the radial direction; the cutting machine further comprises a first centering mechanism (30) detachably arranged on the rotary table (10) to center the to-be-cut piece (200), a second centering mechanism (40) detachably arranged on the rotary table (10) to center the to-be-cut piece (200), and at least one group of clamping mechanisms (90) arranged on the rotary table (10) to clamp and fix the to-be-cut piece (200); wherein the first centering mechanism (30) and the second centering mechanism (40) are used for centering and positioning the to-be-cut piece (200) before the clamping mechanism (90) clamps the to-be-cut piece (200), and are detached after the clamping mechanism (90) clamps the to-be-cut piece (200);

the first centering mechanism (30) comprises two first centering frames (33); each first centering rack (33) comprises a Y-shaped rack (332) and a first adjusting piece (333) driving the Y-shaped rack (332) to reciprocate; the Y-shaped frames (332) of the two first centering frames (33) are oppositely arranged and cooperate with each other to center the piece to be cut (200) through reciprocating motion;

the second centering mechanism (40) comprises two second centering racks; the two second centering frames are detachably arranged on the rotary table (10) and are oppositely arranged and matched with each other so as to radially center the piece to be cut (200), and each second centering frame comprises a clamping hand (42) arranged along the radial direction of the rotary table (10) and a second adjusting piece (43) driving the clamping hand (42) to reciprocate along the radial direction of the rotary table (10); the two clamping hands (42) of the two second centering frames are arranged oppositely and can be matched with each other.

2. The powered cutting apparatus according to claim 1, wherein the turntable (10) comprises a disc body (12), an outer gear ring (13) connected to the disc body (12) for rotating the disc body (12);

the driving mechanism (20) comprises a driving gear (22) meshed with the outer gear ring (13) and a pneumatic motor (21) connected with the driving gear (22) to drive the driving gear (22) to rotate.

3. The powered cutting apparatus according to claim 2, wherein the turntable (10) further comprises a guide assembly (11) disposed about the outer gear ring (13) and the disc (12) to rotationally guide the outer gear ring (13) and the disc (12).

4. The powered cutting apparatus according to claim 3, wherein the guide assembly (11) comprises a ball guide.

5. The power type cutting device according to claim 1, wherein the axial feeding mechanism (60) comprises a bracket (61), a first planetary wheel (62) arranged on the bracket (61), a first screw rod (63) connected with the first planetary wheel (62), arranged in the bracket (61) in the axial direction of the rotary table (10) in a penetrating way and driven by the first planetary wheel (62) to rotate, and a slide block (64) arranged on the first screw rod (63) in a sliding way and driven by the first screw rod (63) to reciprocate on the bracket (61) in the axial direction of the rotary table (10);

the cutting tool (50) is arranged on one side of the sliding block (64) opposite to the piece (200) to be cut in a protruding mode.

6. The power type cutting device according to claim 5, characterized in that the radial feeding mechanism (70) comprises a second planetary gear (71) arranged on the side wall of the support (61), and a second screw rod (72) connected with the second planetary gear (71), penetrating the support (61) along the radial direction of the turntable (10) and driven by the second planetary gear (71) to rotate;

the sliding block (64) is slidably arranged on the second screw rod (72) and driven by the second screw rod (72) to reciprocate along the radial direction of the rotary table (10).

7. The powered cutting apparatus according to claim 5, further comprising an axial trigger mechanism that triggers the feeding of the axial feed mechanism (60);

the axial trigger mechanism comprises a first poke rod which is arranged opposite to the first planetary wheel (62) and used for poking the first planetary wheel (62) to rotate under the pressing of external force.

8. The powered cutting apparatus according to claim 6, further comprising a radial trigger mechanism (80) that triggers the feed of the radial feed mechanism (70);

the outer side wall of the rotary table (10) is provided with a vertical plate (1111), and the vertical plate (1111) extends along the axial direction of the rotary table (10);

the radial trigger mechanism (80) comprises a second poke rod which is arranged on the vertical plate (1111) in a penetrating manner along the radial direction of the rotary table (10) and can be pressed to poke the second planet wheel (71) to rotate under the pressing of external force.

9. The powered cutting apparatus according to claim 1, wherein the first centering mechanism (30) further comprises a support plate (31) detachably disposed on the turntable (10), a guide ring (32) disposed on the support plate (31) and capable of being sleeved on the periphery of the member to be cut (200);

the two first centering racks (33) respectively penetrate through the side wall of the guide ring (32), can rotate along the circumferential direction of the guide ring (32) and are matched with each other to center the to-be-cut piece (200);

the side wall of the guide ring (32) is provided with a guide groove (321) for the first centering frame (33) to rotate and guide along the circumferential direction of the guide ring (32).

10. The powered cutting apparatus according to claim 9, wherein each of said first centering frames (33) further comprises a first frame body (331); the Y-shaped frame (332) is arranged at one end of the first frame body (331) and penetrates into the inner side of the guide ring (32) from the guide groove (321); the first adjusting piece (333) penetrates through the first frame body (331) to drive the Y-shaped frame (332) to reciprocate along the radial direction of the guide ring (32).

11. The powered cutting apparatus according to claim 1, wherein each of said second centering racks further comprises a second rack body (41); the second adjusting piece (43) penetrates through the second frame body (41) and one end of the second adjusting piece is connected with the clamping handle (42).

12. A powered cutting apparatus according to claim 1, characterized in that each set of said gripping means (90) comprises two jaw assemblies (91) arranged at the bottom of said turntable (10) and reciprocating in a radial direction of said turntable (10);

the two clamping jaw assemblies (91) are oppositely arranged so as to clamp and fix the piece to be cut (200) through relative movement.