Clamping, fixing and transferring device for cutting large cylindrical component

Abstract

The invention relates to the technical field of nuclear facility decommissioning, and provides a clamping, fixing and transferring device for cutting a large cylindrical component, which comprises a rack, a supporting clamp for fitting the outer wall of the component to execute movable clamping is arranged at the top of the rack, and a supporting disc for supporting the component and receiving cutting chips is arranged below the supporting clamp; a transmission assembly used for vertically and movably lifting a supporting disc is arranged on the machine frame, a transferring assembly used for horizontally transferring the supporting disc is arranged below the machine frame, through cooperative cooperation of the supporting clamp, the supporting disc and the transferring assembly, large cylindrical components are clamped and transferred after being cut, the stability of the cylindrical components in the cutting process is improved, and the cutting efficiency of the cylindrical components is improved. And the whole process does not need to be implemented on site by personnel, so that the risk of personnel irradiation is effectively avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of nuclear facility decommissioning, and in particular to a clamping, fixing and transporting device for cutting large cylindrical components. Background Art

[0002] In the field of nuclear facility decommissioning technology, there is a great demand for cutting large cylindrical components such as pressure vessels, steam generators and pressurizers. These cylindrical components are usually large in size and have high radiation levels. In the existing technology, vertical cutting and horizontal cutting are generally used when dismantling similar components. Vertical cutting occupies a small horizontal space, a large vertical space, and occupies a small site; horizontal cutting occupies a large horizontal space, a small vertical space, and occupies more ground space. Therefore, vertical cutting should be selected when the site is limited.

[0003] The clamping and fixation of components is a necessary prerequisite for completing the cutting and dismantling tasks. The above-mentioned cylindrical components are not only large in size, but also irregular in shape. There are even many connecting pipelines on the outer wall, which affects the clamping stability during the cutting process. In addition, this type of large cylindrical component is often cut into multiple sections of circular ring-shaped components during cutting, and then further processed. At present, the transportation of cut parts generally requires the cooperation of a crane, which has problems such as laborious clamping, poor reliability, close-range operation, and long on-site operation time for personnel. In addition, metal chips often splash and scatter during the dismantling process, making collection and cleaning more difficult. At the same time, since such components contain radioactive contamination, there is a high risk of radiation exposure to operators. Summary of the invention

[0004] The purpose of the present invention is to provide a clamping, fixing and transporting device for cutting large cylindrical components to solve the above technical problems.

[0005] The present invention is achieved through the following technical solutions: a clamping, fixing and transferring device for cutting large cylindrical components, comprising a frame, a support fixture for fitting the outer wall of the component to perform active clamping is provided on the top of the frame, a support plate for supporting the component and receiving cutting debris is provided below the support fixture, a transmission assembly for vertically movably lifting the support plate is provided on the frame, and a transfer assembly for horizontally transferring the support plate is provided below the frame.

[0006] Furthermore, the supporting fixture comprises two clamping arms which are horizontally symmetrically arranged, and an adjusting component for adjusting the distance between the clamping arms is provided between the two clamping arms.

[0007] Preferably, the adjustment assembly includes a first motor and a rack meshing with the output shaft of the first motor, the first motor is relatively fixed to the frame, the rack is respectively fixed at both ends of the clamping arm, and the same first motor drives the racks on different clamping arms to move horizontally toward or away from each other.

[0008] Preferably, the adjustment component includes a first motor, a winding post and a drive belt. The first motor is fixed relatively to the frame, the winding post is vertically fixed at both ends of the clamping arm, one end of the drive belt is fixed to the output shaft of the first motor, and the other end of the drive belt is fixed to the adjacent winding post of the other clamping arm after passing through the winding post of the clamping arm.

[0009] Preferably, the clamping arm is divided into a plurality of clamping blocks, and a second motor is provided between the clamping blocks and is meshed with the clamping blocks to drive adjacent clamping blocks to move horizontally toward or away from each other.

[0010] Preferably, the clamping arm is in a semicircular shape.

[0011] Furthermore, a negative pressure dust hood for collecting cutting debris is provided on the top of the frame, and the negative pressure dust hood includes a storage frame and a multi-fold plate. The storage frame is arranged along the outer periphery of the frame, and the storage frame is provided with a storage groove with an opening vertically downward and horizontally inward for storing the multi-fold plate.

[0012] Furthermore, the transmission assembly includes a driving motor, a first driven wheel and a second driven wheel. The first driven wheel is connected to the output shaft of the driving motor by a belt drive. A chain for toothed chain drive connection is provided between the first driven wheel and the second driven wheel, and a tray bracket supporting the support plate is fixed on the chain.

[0013] Preferably, the tray bracket is rotatably connected with a guide wheel, and the frame is vertically provided with a guide rail that cooperates with the guide wheel.

[0014] Furthermore, the transfer assembly includes a slide rail and a flatbed vehicle slidably engaged with the slide rail.

[0015] The present invention has at least the following advantages and beneficial effects: through the coordinated cooperation of the support clamp, the support plate and the transfer assembly, the clamping of large cylindrical components and the transfer after cutting are realized, the stability of the cylindrical components during the cutting process is improved, and the cuttability of the components is improved. The entire process does not require on-site personnel to implement, and the risk of personnel radiation is effectively avoided; and through the split design of the support clamp, the clamping of components of different diameters is achieved, which better fits the outer wall of the component and improves the applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A schematic diagram of the structure of a clamping, fixing and transporting device for cutting large cylindrical components provided by the present invention;

[0018] Figure 2 A front view of a clamping, fixing and transporting device for cutting large cylindrical components provided by the present invention;

[0019] Figure 3 A schematic diagram of the structure of a support fixture in a clamping, fixing and transporting device for cutting large cylindrical components provided by the present invention;

[0020] Figure 4 A schematic diagram of the connection between clamping blocks in a clamping, fixing and transporting device for cutting large cylindrical components provided by the present invention;

[0021] Figure 5 A cross-sectional view of a negative pressure dust collecting hood in a clamping, fixing and transferring device for cutting large cylindrical components provided by the present invention;

[0022] Figure 6 A transmission schematic diagram of an adjustment component in a clamping, fixing and transporting device for cutting large cylindrical components provided in the second embodiment of the present invention;

[0023] Icons: 1-frame, 10-guide rail, 2-support clamp, 20-clamp arm, 201-clamp block, 202-second motor, 203-connecting sleeve, 21-adjusting assembly, 211-first motor, 212-rack, 213-winding column, 214-drive belt, 3-support disk, 4-transmission assembly, 41-drive motor, 42-first driven wheel group, 421-pulley, 422-gear, 43-second driven wheel, 44-chain, 5-transfer assembly, 51-slide rail, 52-flatbed car, 6-negative pressure dust hood, 61-storage frame, 610-storage slot, 62-multi-fold plate, 7-tray bracket, 71-guide wheel. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Embodiment 1

[0027] like Figure 1-5 As shown, in this embodiment, a clamping, fixing and transporting device for cutting large cylindrical components is mainly disclosed, including a frame 1, a support fixture 2 for performing movable clamping in contact with the outer wall of the component is provided on the top of the frame 1, a support plate 3 for supporting the component and receiving cutting debris is provided below the support fixture 2, a transmission component 4 for vertically movably lifting the support plate 3 is provided on the frame 1, and a transport component 5 for horizontally transporting the support plate 3 is provided below the frame 1; specifically, the frame 1 can be a frame structure composed of a square frame, columns and beams, the columns are arranged at the four corners of the lower end of the square frame, and are installed and fixed on a stable plane, the beams are connected between adjacent columns, and the arrangement position should avoid the path of the support plate 3; the support fixture 2 is horizontally movably arranged on the top of the frame 1, and can adapt to the clamping of cylindrical components of different diameters; through the clamping of the support fixture 2 and the support of the support plate 3, the stability of the cylindrical component during cutting is improved, and the cuttability of the component is improved;

[0028] It should be noted that before the component is lifted, a circle of shoulder support is welded on the upper part of the component, which can be clamped on the support fixture 2 to form a support. The component is lifted above the device, and the component is cut vertically. If the component has an opening, the opening is facing upward. If there is no opening, the larger end of the component is facing upward, and the position of the component is placed in the center of the support fixture 2, which can be gradually adjusted during the lowering process. The support fixture 2 is closed to clamp the component, and the support plate 3 is lifted upward under the action of the transmission component 4. The support plate 3 is raised to the bottom of the component for support, and the circular cutting tool is used to cut the component in sections from bottom to top. The metal debris generated during the cutting process and the cut sections fall onto the support plate 3, and the transmission component 4 is started again to lower the support plate 3 until the support plate 3 falls onto the transfer component 5, and the support plate 3 is transferred to the subsequent workstation together with the cut component; the entire process can achieve remote clamping and transportation, without the need for on-site implementation by personnel, effectively avoiding the risk of personnel radiation.

[0029] Furthermore, in a specific implementation, the above-mentioned support clamp 2 provided in the embodiment of the present invention includes two horizontally symmetrically arranged clamp arms 20, the clamp arms 20 are semicircular, and an adjustment component 21 for adjusting the distance between the clamp arms 20 is provided between the two clamp arms 20; preferably, the adjustment component 21 includes a first motor 211 and a rack 212 meshed with the output shaft of the first motor 211, the first motor 211 is relatively fixed to the frame 1, the rack 212 is respectively fixed at both ends of the clamp arms 20, and the same first motor 211 drives the racks 212 on different clamp arms 20 to move horizontally toward or away from each other; specifically, the racks 212 at adjacent ends of the two clamp arms 20 are horizontally staggered, and the output shaft of the first motor 211 is inserted therein, and the expansion and contraction of the distance between the two clamp arms 20 is achieved through the forward and reverse rotation of the first motor 211, and it can be automatically adjusted according to components of different diameters, thereby improving the applicability of the device.

[0030] Preferably, the clamping arm 20 is divided into a plurality of clamping blocks 201, and each of the clamping blocks 201 is provided with a second motor 202 which is meshed and connected with the clamping blocks 201 and is used to drive adjacent clamping blocks 201 to move horizontally toward or away from each other; specifically, the horizontal projection of the clamping block 201 may be fan-shaped, with a stepped groove on the side, and a rack 212 on the horizontal stepped surface. The stepped grooves of adjacent clamping blocks 201 are staggered up and down, with a gap in the middle, and the output shaft of the second motor 202 is inserted therein and meshed and transmitted with adjacent clamping blocks 201. The interlaced part of the adjacent clamping blocks 201 is movablely sleeved with a connecting sleeve 203 for installing and fixing the position of the second motor 202. Through the forward and reverse rotation of the second motor 202, the curvature of the clamping surface of the clamping arm 20 can be changed, so that it can better fit cylindrical components of different diameters, achieve similar flexible clamping, and further improve the stability of the clamping.

[0031] Furthermore, in a specific implementation, a negative pressure dust hood 6 for collecting cutting debris is provided on the top of the above-mentioned frame 1 provided in an embodiment of the present invention, and the negative pressure dust hood 6 includes a storage frame 61 and a multi-fold plate 62. The storage frame 61 is arranged along the outer periphery of the frame 1, and the storage frame 61 is provided with a storage groove 610 with an opening vertically downward and horizontally inward for storing the multi-fold plate 62; specifically, the negative pressure dust hood 6 is erected and fixed on the top of the frame 1. When in use, the multi-fold plate 62 stored in the storage frame 61 is stretched vertically downward and horizontally inward to wrap and cover the device, a thin layer of lead is attached to the inner wall of the multi-fold plate 62 to form a radiation shielding layer to reduce radiation spillage, and a connection hole for an externally connected negative pressure pump is provided on one side of the multi-fold plate 62 to suck away fine cutting debris with radiation, thereby avoiding the scattering of cutting debris, ensuring the cleanliness of the cutting environment, and reducing the difficulty of waste collection and treatment.

[0032] Further, in a specific implementation, the transmission assembly 4 provided in the embodiment of the present invention includes a driving motor 41, a first driven wheel group 42 and a second driven wheel 43, the first driven wheel group 42 is connected to the output shaft of the driving motor 41 by belt transmission, a chain 44 for toothed chain transmission connection is provided between the first driven wheel group 42 and the second driven wheel 43, and a tray bracket 7 supporting the support plate 3 is fixed on the chain 44; it should be noted that the first driven wheel group 42 includes a pulley 421 driven by a belt of the output shaft of the driving motor 41 and a gear 422 driven by a toothed chain of the second driven wheel 43, the belt The wheel 421 and the gear 422 are coaxially connected through a rotating shaft, and multiple chains 44 acting on the tray bracket 7 can be vertically and parallelly arranged to ensure the stability and uniformity of the force. The contact part between the support plate 3 and the tray bracket 7 can be connected by a card slot and can be detachable; preferably, a guide wheel 71 is rotatably connected to the tray bracket 7, and the frame 1 is vertically provided with a guide rail 10 that cooperates with the guide wheel 71. Specifically, the column can be made of I-beam, and the groove of the I-beam constitutes the guide rail 10. The outer supports of the guide wheels 71 at both ends of the tray bracket 7 are limited in the groove of the I-beam to realize the vertical limited movement of the tray bracket 7.

[0033] Furthermore, in a specific implementation, the transfer assembly 5 provided in the embodiment of the present invention includes a slide rail 51 and a flatbed trolley 52 that slides on the slide rail 51; specifically, the slide rail 51 is laid on a stable ground, with a portion of it being located under the frame 1, and the flatbed trolley 52 is driven by a driving device to slide on the slide rail 51.

[0034] Embodiment 2

[0035] like Figure 6 As shown, in this embodiment, the main structure is exactly the same as that of the first embodiment, and the difference lies in that the above-mentioned adjustment component 21 includes a first motor 211, a winding post 213 and a driving belt 214. The first motor 211 is relatively fixed to the frame 1, and the winding post 213 is vertically fixed to the two ends of the clamping arm 20 respectively. One end of the driving belt 214 is fixed to the output shaft of the first motor 211, and the other end of the driving belt 214 is fixed to the adjacent winding post 213 of the other clamping arm 20 after passing through the winding post 213 of the clamping arm 20. The first motor 211 winds up the driving belt 214 to realize the expansion and reduction of the distance between the two clamping arms 20.

[0036] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A clamping, fixing and transporting device for cutting large cylindrical components, characterized in that: The invention comprises a frame (1), wherein a support fixture (2) is provided on the top of the frame (1) for performing movable clamping by fitting against the outer wall of a component, a support plate (3) is provided below the support fixture (2) for supporting the component and receiving cutting debris, a transmission assembly (4) is provided on the frame (1) for vertically movably lifting the support plate (3), and a transfer assembly (5) is provided below the frame (1) for horizontally transferring the support plate (3).

2. A clamping, fixing and transporting device for cutting large cylindrical components as claimed in claim 1, characterized in that: The supporting clamp (2) comprises two clamp arms (20) arranged horizontally and symmetrically, and an adjustment component (21) for adjusting the distance between the clamp arms (20) is provided between the two clamp arms (20).

3. A clamping, fixing and transporting device for cutting large cylindrical components as claimed in claim 2, characterized in that: The adjustment component (21) comprises a first motor (211) and a rack (212) meshed with an output shaft of the first motor (211); the first motor (211) is relatively fixed to the frame (1); the rack (212) is respectively fixed to two ends of the clamping arm (20); and the same first motor (211) drives the racks (212) on different clamping arms (20) to move horizontally toward or away from each other.

4. A clamping, fixing and transporting device for cutting large cylindrical components as claimed in claim 2, characterized in that: The adjustment component (21) comprises a first motor (211), a winding post (213) and a driving belt (214); the first motor (211) is fixed relative to the frame (1); the winding post (213) is vertically fixed to two ends of the clamping arm (20), one end of the driving belt (214) is fixed to the output shaft of the first motor (211); the other end of the driving belt (214) is fixed to the adjacent winding post (213) of another clamping arm (20) after passing through the winding post (213) of the clamping arm (20).

5. A clamping, fixing and transporting device for cutting large cylindrical components as claimed in claim 2, characterized in that: The clamping arm (20) is divided into a plurality of clamping blocks (201), and each of the clamping blocks (201) is provided with a second motor (202) meshingly connected with the clamping blocks (201) for driving adjacent clamping blocks (201) to move horizontally toward or away from each other.

6. A clamping, fixing and transporting device for cutting large cylindrical components as claimed in claim 2, characterized in that: The clamping arm (20) is in the shape of a semicircle.

7. A clamping, fixing and transporting device for cutting large cylindrical components as claimed in claim 1, characterized in that: A negative pressure dust collecting hood (6) for collecting cutting debris is provided on the top of the frame (1), and the negative pressure dust collecting hood (6) comprises a storage frame (61) and a multi-fold plate (62). The storage frame (61) is arranged along the periphery of the frame (1), and the storage frame (61) is provided with a storage groove (610) opening vertically downward and horizontally inward for storing the multi-fold plate (62).

8. A clamping, fixing and transporting device for cutting large cylindrical components as claimed in claim 1, characterized in that: The transmission assembly (4) comprises a driving motor (41), a first driven wheel group (42) and a second driven wheel (43); the first driven wheel group (42) is connected to the output shaft of the driving motor (41) by belt transmission; a chain (44) for toothed chain transmission connection is provided between the first driven wheel group (42) and the second driven wheel (43); a tray bracket (7) for supporting the support plate (3) is fixed on the chain (44).

9. A clamping, fixing and transporting device for cutting large cylindrical components as claimed in claim 8, characterized in that: The tray support (7) is rotatably connected to a guide wheel (71), and the frame (1) is vertically provided with a guide rail (10) that cooperates with the guide wheel (71).

10. A clamping, fixing and transporting device for cutting large cylindrical components as claimed in claim 1, characterized in that: The transfer assembly (5) comprises a slide rail (51) and a flatbed vehicle (52) slidably engaged with the slide rail (51).

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