V-shaped clamping tool and boring and milling machine

Abstract

The utility model relates to a V-shaped clamping tool and a boring and milling machine. The V-shaped clamping tool comprises a first supporting mechanism and a second supporting mechanism. The first supporting mechanism comprises a first inclined plane structure with a first inclined plane and a second inclined plane structure with a second inclined plane, and the first inclined plane and the second inclined plane are oppositely arranged, incline towards the sides away from each other and are used for clamping the first end, in the axial direction, of the impeller component; and the first inclined plane structure and the second inclined plane structure can move relatively, so that the height of the first end of the impeller part in the axial direction is adjusted by changing the distance between the first inclined plane and the second inclined plane. The second supporting mechanism is used for clamping the second end, in the axial direction, of the impeller component. The first slope structure and the second slope structure can move relatively, so that the height of the first end of the impeller component in the axial direction is adjusted, the height of one end of the impeller component in the axial direction is the same as that of the other end of the impeller component, and accurate alignment of the impeller component in the height direction is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of repairing hydraulic components of a nuclear power plant main pump, and in particular to a V-type clamping tool and a boring and milling machine. Background Art

[0002] There are various types of pumps running in each system of a nuclear power plant. The main pump is located in the heart of the nuclear island. It is used to pump hot water into the evaporator to convert it into heat energy. It is the key to controlling the water circulation of nuclear power operation and belongs to the first-level equipment of the nuclear power plant. The hydraulic components of the main pump include the impeller component and matching key installed on the pump shaft, diffuser, labyrinth seal ring, bearing assembly, heat shield, No. 1 sealing chamber, backrest wheel and matching key and short circuit. After a cycle of operation, the hydraulic components of the main pump must be disassembled and inspected in an all-round manner to eliminate the hidden dangers of operation under the operating conditions of the next cycle.

[0003] After a cycle of use, some dimensions of the impeller components are slightly deformed under operating conditions. When professionals dismantled the main pump hydraulic components for inspection and measurement, they found that due to the excessive dimensions of some impeller components, the matching dimensions of the internal tapered holes and keyways of the impeller components and the pump shaft did not meet the standards, which ultimately led to the failure of the entire main pump hydraulic component dimension chain to meet the standards. Therefore, the problem of some dimensions of the impeller components not meeting the standards must be solved through processing and repair.

[0004] However, since the impeller component is a large, irregularly shaped component, it cannot be directly clamped firmly on the processing lathe and cannot be accurately aligned, making it difficult to accurately repair the impeller component. Summary of the invention

[0005] Based on this, it is necessary to provide a V-type clamping tool and a boring and milling machine to address the problem that the impeller components cannot be directly clamped firmly on the processing lathe and cannot be accurately aligned.

[0006] A V-shaped clamping tool, used for clamping an impeller component, the V-shaped clamping tool comprising:

[0007] a first supporting mechanism, comprising a first inclined surface structure having a first inclined surface and a second inclined surface structure having a second inclined surface, wherein the first inclined surface and the second inclined surface are arranged opposite to each other and inclined toward a side away from each other, wherein the first inclined surface and the second inclined surface are used to clamp the first end of the impeller component in the axial direction, and the first inclined surface structure and the second inclined surface structure can move relative to each other to adjust the height of the first end of the impeller component in the axial direction by changing the interval between the first inclined surface and the second inclined surface; and

[0008] The second supporting mechanism is used to clamp the second end of the impeller component along the axial direction.

[0009] In one embodiment, the first supporting mechanism includes a first sliding assembly, the first inclined surface structure is arranged on the first sliding assembly, and the sliding direction of the first sliding assembly is perpendicular to the axial direction of the impeller component.

[0010] In one embodiment, the first sliding assembly includes a slide rail and a slider disposed on the slide rail, and the first inclined surface structure is disposed on the slider.

[0011] In one embodiment, the first sliding assembly includes a rotating wheel, a lead screw and a nut mounting seat sleeved on the lead screw, the slider is fixedly connected to the nut mounting seat, the lead screw is rotatably connected to the slide rail, and the rotating wheel is arranged at one end of the lead screw.

[0012] In one embodiment, the second supporting mechanism has a third inclined plane and a fourth inclined plane, the third inclined plane and the fourth inclined plane are arranged opposite to each other and inclined toward a side away from each other, and the third inclined plane and the fourth inclined plane are used to clamp the second end of the impeller component along the axial direction.

[0013] In one embodiment, at least one of the first supporting mechanism and the second supporting mechanism comprises a second sliding assembly, and the second sliding assembly is used to drive the first end and / or the second end of the impeller component to move perpendicular to the axial direction.

[0014] In one embodiment, the first supporting mechanism comprises a second sliding assembly, and the first inclined surface structure and the second inclined surface structure are arranged on the second sliding assembly.

[0015] A boring and milling machine comprises a workbench and a V-shaped clamping tool, wherein the V-shaped clamping tool is arranged on the workbench.

[0016] In one embodiment, the V-clamping tool includes a fixing mechanism, which includes a pressure plate, a pull rod and a locking nut. The pressure plate is used to press the cover into the inner hole of the impeller component. One end of the pull rod passes through the pressure plate and is locked by the locking nut, and the other end is slidably connected to the workbench.

[0017] In one of the embodiments, the fixing mechanism includes a support member, which is disposed at the bottom of the pressure plate and located on a side of the pull rod away from the impeller component.

[0018] In the above-mentioned V-type clamping tool and boring and milling machine, the first end of the impeller component in the axial direction is clamped by the first supporting mechanism, and the second end of the impeller component in the axial direction is clamped by the second supporting mechanism. That is, the impeller component can be fixed by the first supporting mechanism and the second supporting mechanism. At the same time, the first supporting mechanism includes the first inclined plane structure and the second inclined plane structure, and the first inclined plane structure and the second inclined plane structure can move relative to each other. When the first inclined plane structure and the second inclined plane structure are close to each other, the spacing between the first inclined plane and the second inclined plane becomes smaller, so that the height of the first end of the impeller component in the axial direction can be increased; when the first inclined plane structure and the second inclined plane structure are away from each other, the spacing between the first inclined plane and the second inclined plane becomes larger, so that the height of the first end of the impeller component in the axial direction can be reduced. That is, by adjusting the height of the first end of the impeller component in the axial direction, it is convenient to make the height of the first end of the impeller component in the axial direction the same as the height of the second end, so as to facilitate the precise alignment of the impeller component in the height direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure in which an impeller component is provided in one embodiment.

[0020] Figure 2 The figure is a schematic structural diagram of a boring and milling machine provided with an impeller component in one embodiment.

[0021] Figure 3 It is a schematic diagram of the structure when a V-shaped clamping tool clamps an impeller component in one embodiment.

[0022] Figure 4 Schematic diagram of the structure of the second supporting mechanism in one embodiment.

[0023] Reference numerals: 100, first supporting mechanism; 110, first inclined plane structure; 111, first inclined plane; 120, second inclined plane structure; 121, second inclined plane; 130, first sliding assembly; 131, sliding rail; 132, sliding block; 133, lead screw; 134, rotating wheel; 140, second sliding assembly;

[0024] 200, second supporting mechanism; 210, third inclined plane; 220, fourth inclined plane;

[0025] 300. Workbench; 310. Boring and milling machine spindle;

[0026] 400, fixing mechanism; 410, pressure plate; 420, pull rod; 430, locking nut; 440, support member; 500, impeller component. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0028] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0029] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0030] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0031] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0032] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0033] Combination Figure 1 When repairing the impeller component 500, first determine the part to be processed of the impeller component 500 according to the assembly relationship between the impeller component 500 and other parts, and distinguish the surface of the part to be processed of the impeller component 500 by A / B / C / D / E / F / G / H / M and keyway. Then select the appropriate processing machine tool equipment according to the dimensional accuracy and technical requirements of the part to be processed.

[0034] According to the requirements for renovation and overhaul of the main pump hydraulic components, after the impeller component 500 is disassembled and inspected, if the dimensional accuracy of the keyway of the impeller component 500 does not meet the requirements, the keyway of the impeller component 500 needs to be repaired. Since the keyway has three planes that need to be processed, and the impeller component 500 is a large irregularly shaped circular component, a V-shaped clamping tool is designed to clamp the impeller component 500.

[0035] See also Figure 2 and Figure 3, a V-shaped clamping tool provided in an embodiment of the present application is used to clamp an impeller component 500, and the V-shaped clamping tool includes a first supporting mechanism 100 and a second supporting mechanism 200. The first supporting mechanism 100 includes a first inclined surface structure 110 having a first inclined surface 111 and a second inclined surface structure 120 having a second inclined surface 121, the first inclined surface 111 and the second inclined surface 121 are arranged opposite to each other and inclined to a side away from each other, the first inclined surface 111 and the second inclined surface 121 are used to clamp the first end of the impeller component 500 in the axial direction, and the first inclined surface structure 110 and the second inclined surface 120 can move relative to each other to adjust the height of the first end of the impeller component 500 in the axial direction by changing the spacing between the first inclined surface 111 and the second inclined surface 121. The second supporting mechanism 200 is used to clamp the second end of the impeller component 500 in the axial direction.

[0036] In actual use, the first support mechanism 100 is first hoisted, and then the second support mechanism 200 is placed according to the distance between the E end face and the A end face of the impeller component 500. Then, the first end of the impeller component 500 is placed on the first support mechanism 100, and the second end of the impeller component 500 is placed on the second support mechanism 200. Then, the height of the first end of the impeller component 500 is adjusted by adjusting the relative distance between the first inclined surface structure 110 and the second inclined surface structure 120, so that the height of the first end is flush with the height of the second end.

[0037] In this embodiment, the first end of the impeller component 500 along the axial direction is clamped by the first support mechanism 100, and the second end of the impeller component 500 along the axial direction is clamped by the second support mechanism 200. That is, the impeller component 500 can be fixed by the first support mechanism 100 and the second support mechanism 200. At the same time, the first support mechanism 100 includes a first inclined surface structure 110 and a second inclined surface structure 120, and the first inclined surface structure 110 and the second inclined surface structure 120 can move relative to each other. When the first inclined surface structure 110 and the second inclined surface structure 120 are close to each other, the distance between the first inclined surface 111 and the second inclined surface 121 becomes smaller, so that the height of the first end of the impeller component 500 along the axial direction can be increased; when the first inclined surface structure 110 and the second inclined surface structure 120 are away from each other, the distance between the first inclined surface 111 and the second inclined surface 121 becomes larger, so that the height of the first end of the impeller component 500 along the axial direction can be reduced. That is, by adjusting the height of the first end of the impeller component 500 along the axial direction, the height of the first end of the impeller component 500 along the axial direction is made the same as the height of the second end, so that the impeller component 500 can be accurately aligned in the height direction.

[0038] It should be noted that since the first end of the impeller component 500 along the axial direction is clamped by the first inclined surface structure 110 and the second inclined surface structure 120, the first inclined surface structure 110 and the second inclined surface structure 120 can move relative to each other along the axial direction perpendicular to the impeller component 500 to adjust the height of the first end of the impeller component 500 along the axial direction.

[0039] The first inclined surface structure 110 and the second inclined surface structure 120 may be arranged opposite to each other or may be arranged in a staggered manner.

[0040] In some embodiments, the first supporting mechanism 100 includes a first sliding assembly 130 , the first inclined surface structure 110 is disposed on the first sliding assembly 130 , and the sliding direction of the first sliding assembly 130 is perpendicular to the axial direction of the impeller component 500 .

[0041] In one embodiment, the second inclined plane structure 120 is fixed, and the first inclined plane structure 110 is disposed on the first sliding assembly 130, and can move toward a side close to the second inclined plane structure 120 or move toward a side away from the second inclined plane structure 120, so as to change the distance between the first inclined plane structure 110 and the second inclined plane structure 120.

[0042] In another embodiment, the second inclined plane structure 120 is disposed on another first sliding assembly. In this case, the first inclined plane structure 110 and the second inclined plane structure 120 can move relative to each other at the same time to change the distance between the first inclined plane structure 110 and the second inclined plane structure 120 .

[0043] Furthermore, the first sliding assembly 130 includes a sliding rail 131 and a sliding block 132 disposed on the sliding rail 131 , and the first inclined surface structure 110 is disposed on the sliding block 132 .

[0044] The length direction of the slide rail 131 is perpendicular to the axial direction of the impeller component 500. In actual use, by pushing the slider 132, the slider 132 can drive the first inclined surface structure 110 to move relative to the second inclined surface structure 120.

[0045] Specifically, the first sliding assembly 130 includes a rotating wheel 134, a lead screw 133 and a nut mounting seat sleeved on the lead screw 133, the slider 132 is fixedly connected to the nut mounting seat, the lead screw 133 is rotatably connected to the slide rail 131, and the rotating wheel 134 is arranged at one end of the lead screw 133.

[0046] In actual use, by rotating the rotating wheel 134, the rotating wheel 134 will drive the screw 133 to rotate, and since the screw 133 is rotatably connected with the slide rail 131, that is, the screw 133 is fixed in the length direction relative to the slide rail 131, when the screw 133 rotates in place, it will drive the nut mounting seat to move along the length direction of the screw 133, and at the same time, the slider 132 drives the first inclined surface structure 110 to move on the slide rail 131.

[0047] In some embodiments, in combination Figure 4 The second supporting mechanism 200 has a third inclined surface 210 and a fourth inclined surface 220, which are arranged opposite to each other and inclined toward a side away from each other, and are used to clamp the second end of the impeller component 500 along the axial direction.

[0048] In some embodiments, the third inclined surface 210 and the fourth inclined surface 220 are relatively fixed, that is, the height of the second end of the impeller component 500 is relatively fixed, and the height of the second end of the impeller component 500 only needs to be adjusted by the first inclined surface structure 110 and the second inclined surface structure 120. At this time, a V-shaped groove is provided on the first supporting mechanism 100, one side wall of the V-shaped groove is the third inclined surface 210, and the other side wall of the V-shaped groove is the fourth inclined surface 220.

[0049] In some other embodiments, the third slope 210 and the fourth slope 220 can be close to or away from each other, that is, the distance between the third slope 210 and the fourth slope 220 is adjustable, and the height of the second end of the impeller component 500 can also be adjusted by the third slope 210 and the fourth slope 220.

[0050] In some embodiments, at least one of the first supporting mechanism 100 and the second supporting mechanism 200 includes a second sliding assembly 140, and the second sliding assembly 140 is used to drive the first end and / or the second end of the impeller component 500 to move perpendicular to the axial direction.

[0051] In this embodiment, when the first inclined surface structure 110 is driven to slide by the first sliding assembly 130, so that the height of the first end of the impeller component 500 is consistent with the height of the second end, the axial direction of the impeller component 500 may be inconsistent with the direction of the boring and milling machine spindle 310, and the second sliding assembly 140 is required to drive the first end and / or the second end to move horizontally so that the axial direction of the impeller component 500 is consistent with the direction of the spindle of the boring and milling machine. The second sliding assembly 140 has the same structure as the first sliding assembly 130.

[0052] Furthermore, the first supporting mechanism 100 includes a second sliding assembly 140 , and the first inclined surface structure 110 and the second inclined surface structure 120 are disposed on the second sliding assembly 140 .

[0053] The first sliding assembly 130 is arranged on the second sliding assembly 140, and the second sliding assembly 140 can simultaneously drive the first sliding assembly 130, the first inclined surface structure 110 and the second inclined surface structure 120 to move axially perpendicular to the impeller component 500 so that the axial direction of the impeller component 500 is the same as the direction of the spindle of the boring and milling machine.

[0054] In one embodiment of the present application, a boring and milling machine is also disclosed, Figure 2 The boring and milling machine includes a workbench 300 and a V-shaped clamping tool, and the V-shaped clamping tool is arranged on the workbench 300.

[0055] In some embodiments, the V-clamping tool includes a fixing mechanism 400, which includes a pressure plate 410, a pull rod 420 and a locking nut 430. The pressure plate 410 is used to press into the inner hole of the impeller component 500. One end of the pull rod 420 passes through the pressure plate 410 and is locked by the locking nut 430, and the other end is slidably connected to the workbench 300.

[0056] The impeller component 500 is provided with fixing mechanisms 400 at both ends along its axial direction. After the impeller component 500 is aligned, it is fixed at both ends of the impeller component 500 by the fixing mechanisms 400, and then the keyway is processed by a boring and milling machine.

[0057] A T-shaped slot is provided on the workbench 300 of the boring and milling machine, and the fixing mechanism 400 includes a T-shaped block, which is slidingly arranged in the T-shaped slot. One end of the pull rod 420 is threadedly connected to the T-shaped block, and the other end passes through the pressure plate 410. The pressure plate 410 overlaps the inner hole of the impeller component 500. When the pressure plate 410 is tightened by the locking nut, the impeller component 500 can be fixed.

[0058] Specifically, in order to further improve the stability of the fixing mechanism 400, the fixing mechanism 400 includes a support member 440, which is disposed at the bottom of the pressing plate 410 and located on a side of the tie rod 420 away from the impeller component 500. That is, the support member 440 and the impeller component 500 are respectively disposed at both ends of the tie rod 420, so as to maintain the balance of the pressing plate 410 so as to better press the impeller component 500.

[0059] The bottom of the support member 440 is also threadedly connected to the T-shaped block in the T-shaped slot to improve the stability of the support member 440 .

[0060] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A V-shaped clamping tool, characterized in that: Used for clamping impeller components, the V-type clamping tool comprises: a first supporting mechanism, comprising a first inclined surface structure having a first inclined surface and a second inclined surface structure having a second inclined surface, wherein the first inclined surface and the second inclined surface are arranged opposite to each other and inclined toward a side away from each other, wherein the first inclined surface and the second inclined surface are used to clamp the first end of the impeller component in the axial direction, and the first inclined surface structure and the second inclined surface structure can move relative to each other to adjust the height of the first end of the impeller component in the axial direction by changing the interval between the first inclined surface and the second inclined surface; and The second supporting mechanism is used to clamp the second end of the impeller component along the axial direction.

2. The V-clamping tool according to claim 1, characterized in that: The first supporting mechanism comprises a first sliding assembly, the first inclined surface structure is arranged on the first sliding assembly, and the sliding direction of the first sliding assembly is perpendicular to the axial direction of the impeller component.

3. The V-clamping tool according to claim 2, characterized in that: The first sliding assembly includes a sliding rail and a sliding block arranged on the sliding rail, and the first inclined surface structure is arranged on the sliding block.

4. The V-clamping tool according to claim 3, characterized in that: The first sliding assembly includes a rotating wheel, a lead screw and a nut mounting seat sleeved on the lead screw, the sliding block is fixedly connected to the nut mounting seat, the lead screw is rotatably connected to the slide rail, and the rotating wheel is arranged at one end of the lead screw.

5. The V-clamping tool according to claim 1, characterized in that: The second supporting mechanism has a third inclined surface and a fourth inclined surface, the third inclined surface and the fourth inclined surface are arranged opposite to each other and inclined toward a side away from each other, and the third inclined surface and the fourth inclined surface are used to clamp the second end of the impeller component along the axial direction.

6. The V-clamping tool according to claim 1, characterized in that: At least one of the first supporting mechanism and the second supporting mechanism comprises a second sliding assembly, and the second sliding assembly is used for driving the first end and / or the second end of the impeller component to move perpendicularly to the axial direction.

7. The V-clamping tool according to claim 6, characterized in that: The first supporting mechanism comprises a second sliding assembly, and the first inclined surface structure and the second inclined surface structure are arranged on the second sliding assembly.

8. A boring and milling machine, characterized in that: The boring and milling machine comprises a workbench and the V-shaped clamping tool according to any one of claims 1 to 7, and the V-shaped clamping tool is arranged on the workbench.

9. The boring and milling machine according to claim 8, characterized in that: The V-shaped clamping tool includes a fixing mechanism, which includes a pressure plate, a pull rod and a locking nut. The pressure plate is used to press the cover in the inner hole of the impeller component. One end of the pull rod passes through the pressure plate and is locked by the locking nut, and the other end is slidably connected to the workbench.

10. The boring and milling machine according to claim 9, characterized in that: The fixing mechanism comprises a supporting member, which is arranged at the bottom of the pressing plate and located at a side of the pull rod away from the impeller component.

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