Card adjustment device

Abstract

A clamping adjustment device is suitable for clamping adjustment in plane milling processing of a W-shaped plate assembly of a core cover, the clamping adjustment device comprising: a base, comprising a plurality of evenly arranged intermediate brackets, the intermediate brackets being step-layer structural members, the intermediate brackets comprising two opposite side plates and a plurality of step units arranged in a step manner and sandwiched between the side plates; a support assembly, arranged on the step units and the side plates of the intermediate brackets, the support assembly cooperating with the clamping surface and the ring support of the W-shaped plate assembly; a pressure plate assembly, arranged on the two opposite side plates of the intermediate brackets and cooperating with the ring support of the W-shaped plate assembly; the support assembly comprising a support block, a retaining ring, a push rod and a nut connected in sequence, the support block contacting with the clamping surface and the ring support surface of the W-shaped plate assembly; the pressure plate assembly comprising a pressure plate and at least one adjusting member, the pressure plate contacting with the ring support surface of the W-shaped plate assembly, the adjusting member being connected to the pressure plate and the side plates in sequence.

Description

Technical Field

[0001] The invention relates to the technical field of processing components of a third-generation pressurized water reactor nuclear reactor, and in particular to a clamping and adjusting device in the milling process of a W-shaped plate component. Background Art

[0002] The core cover is an important component of the reactor internals. It houses related components such as fuel assemblies and control rod assemblies, and provides them with reliable positioning and guidance, provides coolant flow channels and reasonable flow distribution for the core, and reduces ineffective leakage of coolant.

[0003] In the third-generation nuclear power reactors such as AP1000, CAP1000, and CAP1400 in nuclear power projects, the core cover assembly has been changed from the screw connection of the second generation to the current full welding form. The welding structure is complex, the precision requirements are high, and the manufacturing difficulty is great. Figure 1 and Figure 2 As shown, Figure 1 The schematic diagram of the core cover structure is shown in Figure 1. Figure 2 is a schematic diagram of the structure of the W-shaped plate assembly, such as Figure 1 As shown, the core cover 200 includes a W-shaped plate assembly 100, a C-shaped plate assembly 500, a bottom plate 600, a top plate 700, a semi-ring plate 800 and a rib plate, wherein the W-shaped plate assembly 100 includes a plurality of W-shaped plates 101, and the C-shaped plate assembly 500 includes a plurality of C-shaped plates 501. The W-shaped plate assembly 100 is one of the important parts of the core cover of the reactor internal component, and the W-shaped plate 101 is formed by cold processing in the form of bending, which requires high precision and is difficult to bend and correct.

[0004] When adjusting and clamping the W-shaped plate assembly 100 after bending and forming, general tooling fixtures clamp the W-shaped plate assembly 100 in the form of pads and pressure blocks. However, the overall flatness adjustment effect of the W-shaped plate assembly 100 supported and clamped by multiple blocks is not good, and deformation is easy to occur during processing, which affects the processing accuracy and is inconvenient to clamp.

[0005] Therefore, in order to process the inner surface of the W-shaped plate assembly to meet the design requirements, a new clamping and adjusting device needs to be provided. Summary of the invention

[0006] The purpose of the present invention is to solve the above problems and provide a clamping adjustment device, which uses a first support assembly to clamp the clamping surface of the W-shaped plate assembly with the first mounting plate and the second mounting plate of the intermediate bracket, and uses a second support assembly and a pressure plate assembly to clamp the ring support of the W-shaped plate assembly with the side plate of the intermediate bracket, so that the clamping adjustment device of the present application has convenient and accurate leveling, clamping and fixing functions, which is used to meet the milling plane processing accuracy and roughness requirements of the W-shaped plate assembly. To achieve the above purpose, the present invention adopts the following technical solutions.

[0007] A clamping and adjusting device is suitable for clamping and adjusting a W-shaped plate assembly of a core cover, and the clamping and adjusting device comprises:

[0008] A base, comprising a bottom plate and a plurality of intermediate brackets, wherein the intermediate brackets comprise two opposite side plates arranged on the bottom plate, and a plurality of ladder sub-units arranged in a step-like manner between the two opposite side plates, wherein the ladder sub-units comprise a first mounting plate arranged along a first direction and a second mounting plate arranged along a second direction; wherein the ladder sub-units further comprise:

[0009] A support assembly, comprising a first support assembly and a second support assembly, wherein the first support assembly is respectively arranged on the first mounting plate and the second mounting plate, and the second support assembly is arranged on the side plate, the first support assembly is used to contact and cooperate with the clamping surface of the W-shaped plate assembly, and the second support assembly is used to contact and cooperate with the ring support surface of the W-shaped plate assembly; and,

[0010] A pressure plate assembly is arranged on the side plate of the intermediate bracket, and the pressure plate assembly is used for pressing and fitting with the ring support.

[0011] Furthermore, the first support assembly and the second support assembly each include a support block, a retaining ring, a push rod and a nut connected in sequence, one end of the push rod passes through the retaining ring and is hinged to one end of the support block, and the other end of the push rod passes through the first mounting plate or the second mounting plate or the side plate and then cooperates with the nut, wherein the support block of the first support assembly is used to contact and cooperate with the clamping surface, and the support block of the second support assembly is used to contact and cooperate with the ring support surface.

[0012] Furthermore, at the hinge between the push rod and the support block, the hinge mode is a fixed hinge, the push rod is a ball-head type fixed push rod, the push rod has a spherical structure at the hinge end, and a first groove and a second groove connected to each other are provided on the support block, the spherical structure is accommodated in the first groove, the retaining ring is embedded between the support block and the spherical structure, the retaining ring is accommodated in the second groove, and the inner diameter of the retaining ring is smaller than the maximum diameter of the spherical structure.

[0013] Further, the pressure plate assembly includes a pressure plate, a first stud, a second stud, a second nut and a gasket, the first stud is connected to the pressure plate and the side plate in sequence, the second stud is connected to the pressure plate and the side plate in sequence, the second nut and the gasket are arranged on the first stud, and the second nut is arranged on the side of the pressure plate away from the ring support, the gasket is clamped between the second nut and the pressure plate, and the pressure plate is used to press fit with the second support assembly and to clamp the ring support.

[0014] Furthermore, the step sub-unit includes a first step sub-unit, a second step sub-unit and a third step sub-unit, and the heights of the first step sub-unit, the second step sub-unit and the third step sub-unit from the base plate decrease successively, wherein the first mounting plate, the second mounting plate and the side plate are arranged perpendicular to each other.

[0015] Furthermore, a accommodating space is formed between the first mounting plate, the second mounting plate, and the two opposite side plates of each intermediate bracket and the bottom plate, the spacing between the two opposite side plates is smaller than the spacing between two adjacent ring supports of the W-shaped component, the nuts of the support component are all arranged inside the accommodating space, and the pressure plate of the pressure plate component, the ring support of the W-shaped plate component, and the support block of the support component are all arranged outside the accommodating space.

[0016] Furthermore, the base also includes two end brackets, a connecting plate and a rib plate arranged on the bottom plate, the connecting plate and the rib plate are respectively arranged between adjacent two end brackets and the middle bracket, and between two adjacent middle brackets, and the two end brackets include the first mounting plate, the second mounting plate and one of the side plates.

[0017] Furthermore, the first mounting plate on the two end brackets and the second mounting plate on the two end brackets are spaced apart to form a slit, and an inclined groove is provided on the side plates of the two end brackets, the inclined groove is connected to the slit, and the end of the vertical plate of the W-shaped plate assembly passes through the slit and is accommodated in the inclined groove.

[0018] Furthermore, the base is an integrated structural component, and the first mounting plate, the second mounting plate and the side plate of the intermediate bracket, the bottom plate, the connecting plate, the two end brackets, and the rib plate are all connected by welding.

[0019] Furthermore, threaded through holes are respectively provided on the first mounting plate, the second mounting plate and the side plate, and the outer peripheral surfaces of the push rod, the first stud and the second stud are threadedly matched with the threaded through holes respectively.

[0020] The positive effects of a clamping adjustment device of the present invention are:

[0021] (1) By using the first support assembly to tightly fit the clamping surface of the W-shaped plate assembly with the first mounting plate and the second mounting plate of the intermediate bracket, and by using the second support assembly and the pressure plate assembly to tightly fit the ring support of the W-shaped plate assembly with the side plate of the intermediate bracket, the clamping adjustment device of the present application has convenient and accurate leveling, clamping and fixing functions, which is used to meet the milling plane processing accuracy and roughness requirements of the W-shaped plate assembly.

[0022] (2) It can be used in various types of reactors in multiple nuclear power plants, contributing to the development of my country’s nuclear power industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of the structure of the core cover;

[0024] Figure 2 It is a structural schematic diagram of a W-shaped plate assembly;

[0025] Figure 3 It is a schematic diagram of the assembly of the W-shaped plate assembly and the clamping and adjusting device of the present invention;

[0026] Figure 3A for Figure 3 Middle A-direction view;

[0027] Figure 3B for Figure 3A A magnified view of the middle I direction;

[0028] Figure 4 It is a structural schematic diagram of the clamping adjustment device of the present invention;

[0029] Figure 5 It is a structural schematic diagram of the base of the present invention;

[0030] Fig. 6A It is a schematic diagram of assembling the W-shaped plate assembly and the first supporting assembly;

[0031] Figure 6B It is a schematic diagram of the assembly of the W-shaped plate assembly, the second support assembly and the pressure plate assembly.

[0032] The numbers in the figure are:

[0033] 200, core cover; 100, W-shaped plate assembly;

[0034] 500, C-shaped plate assembly; 501, C-shaped plate;

[0035] 600, bottom plate; 700, top plate;

[0036] 800, semi-ring plate; 101, W-shaped plate;

[0037] 102, vertical plate; 103, ring support;

[0038] 1010, "V" shaped plate element; 1011, valley line;

[0039] 300, mounting surface; 400, processing surface;

[0040] 301, first card-mounting surface; 302, second card-mounting surface;

[0041] 1. Base; 10. Middle bracket;

[0042] 20. Bottom plate; 30. Brackets at both ends;

[0043] 40. Connecting plate; 50. Rib plate;

[0044] 60. Accommodation space; 11. Ladder subunit;

[0045] 110, first step unit; 120, second step unit;

[0046] 130. third step unit; 111. first mounting plate;

[0047] 112. second mounting plate; 113. slit;

[0048] 12. side plate; 121. chute;

[0049] 13. Positive contact surface; 14. Back contact surface;

[0050] 310. end step unit; 2. support assembly;

[0051] 201, a first supporting assembly; 202, a second supporting assembly;

[0052] 21. Support block; 22. Retaining ring;

[0053] 231, ejector rod; 24, nut;

[0054] 213. Spherical structural parts; 3. Pressure plate assembly;

[0055] 35. Pressing plate; 31. First stud;

[0056] 32. second stud; 33. second nut;

[0057] 34. Gasket. DETAILED DESCRIPTION

[0058] The specific implementation modes of the device of the present invention are given below in conjunction with the accompanying drawings, but it should be noted that the implementation of the present invention is not limited to the following implementation modes.

[0059] See also Figure 1 and Figure 2 , Figure 1 is a schematic diagram of the structure of the core cover; Figure 2 Schematic diagram of the structure of the W-shaped plate assembly; the present invention provides a clamping adjustment device suitable for clamping adjustment during the plane milling process of the W-shaped plate assembly 100 of the core cover 200. Figure 2 As shown, the W-shaped plate assembly 100 has a clamping surface 300 and a processing surface 400 ( Figure 3 ), the clamping surface 300 is used for assembling and positioning with the clamping adjustment device, the W-shaped plate assembly 100 includes a plurality of W-shaped plates 101, a vertical plate 102 and a ring support 103, the W-shaped plate 101 is a metal structure composed of a plurality of evenly distributed valley lines 1011 and a plurality of evenly distributed peak lines, the W-shaped plate 101 includes a plurality of continuous "V"-shaped plate units 1010, each of the "V"-shaped plate units 1010 includes a first clamping surface 301 and a second clamping surface 302 symmetrically arranged about the valley line, the vertical plate 102 is arranged along the valley line 101 of each W-shaped plate 101 011 is arranged in the length direction, the vertical plate 102 and the ring support 103 are both arranged on the clamping surface 300, the vertical plate 102 is arranged on the axial symmetry center line of the "V"-shaped plate unit 1010, that is, the angles formed by the vertical plate 102, the first clamping surface 301, and the second clamping surface 302 are respectively 45°, and a plurality of ring supports 103 are evenly arranged in the length direction of each vertical plate 102, and the ring supports 103 are respectively arranged perpendicular to the vertical plate 102, the first clamping surface 301, the second clamping surface 302 and the valley line 1011.

[0060] See also Figure 3 , Figure 3A , Figure 3B and Figure 4 , Figure 3 It is a schematic diagram of the assembly of the W-shaped plate assembly and the clamping and adjusting device of the present invention; Figure 3A for Figure 3 Middle A-direction view; Figure 3B for Figure 3A A magnified view of the middle I direction; Figure 4 The structure diagram of the clamping and adjusting device of the present invention is shown in FIG. 1. In this embodiment, the clamping and adjusting device comprises a base 1, a support assembly 2, and a pressure plate assembly 3. The clamping surface 300 of the W-shaped plate assembly 100 is arranged and assembled relative to the base 1, and the processing surface 400 is arranged toward the side away from the base 1.

[0061] See also Figure 5 , Figure 5 Schematic diagram of the structure of the base of the present invention; Figure 5 As shown, the base 1 includes a plurality of intermediate brackets 10, a bottom plate 20, two end brackets 30, a connecting plate 40 and a rib plate 50. The two end brackets 30 are arranged at the two end portions of the bottom plate 20. The intermediate brackets 10 are evenly arranged on the bottom plate 20 along the length direction of the bottom plate 20, and are arranged between two of the two end brackets 30. The connecting plate 40 and the rib plate 50 are respectively arranged between adjacent two end brackets 30 and the intermediate bracket 10, and are respectively arranged between two adjacent intermediate brackets 10. The connecting plate 40 and the rib plate 50 are arranged in a one-to-one correspondence, and the use of the rib plate 50 helps to improve the strength of the overall equipment.

[0062] In the present application, the base 1 is an integrated structural member. The first mounting plate 111, the second mounting plate 112, the side plate 12, the bottom plate 20, the two end brackets 30, the connecting plate 40, and the rib plate 50 of the intermediate bracket 10 are all connected by welding. The base 1 adopts an integrated welding form, which can well avoid the relative movement between the intermediate brackets 10 and between the intermediate bracket 10 and the two end brackets 30 during the processing, thereby improving the processing quality, and can enhance the integrity, strength and stability of the clamping and adjusting device described in the present application, and reduce the influence of the deformation and displacement of the clamping and adjusting device on the processing of the W-shaped plate assembly 100.

[0063] Please continue to see Figure 5 The intermediate bracket 10 is a stepped structure, each of the intermediate brackets 10 includes a plurality of stepped sub-units 11 arranged in a stepped manner and two oppositely arranged side panels 12, the plurality of stepped units 11 are arranged between the two opposite side panels 12, wherein the stepped sub-unit 11 includes a first mounting plate 111 arranged along a first direction and a second mounting plate 112 arranged along a second direction.

[0064] In a preferred embodiment, the step sub-unit 11 includes a first step sub-unit 110, a second step sub-unit 120 and a third step sub-unit 130 which are sequentially arranged in a step shape, and the heights of the first step sub-unit 110, the second step sub-unit 120 and the third step sub-unit 130 from the bottom plate 20 are sequentially decreased. Moreover, in the same intermediate bracket 10, the first mounting plate 111 and the second mounting plate 112 are alternately vertically arranged, and the first mounting plate 111, the second mounting plate 112 and the side plate 12 are vertically arranged to each other. In addition, the first mounting plate 111 is parallel to the bottom plate 20, and the second mounting plate 112, the connecting plate 40 and the rib plate 50 are parallel to each other. And, as Figure 4 As shown, each of the two end brackets 30 further includes a plurality of end step units 310 arranged in a stepped manner, and the end step units 310 correspond to the step units 11 of the middle bracket 10 , that is, they are used for shape matching when the W-shaped plate assembly 100 is placed.

[0065] See also Fig. 6A and Figure 6B The base 1 has a positive contact surface 13 and a back surface 14. The positive contact surface 13 is used to be arranged opposite to the clamping surface 300 of the W-shaped plate assembly 100 and the two cooperate with each other. The back surface 14 is the other side of the positive contact surface 13.

[0066] like Figure 3 , Figure 3A and Figure 4 As shown, a receiving space 60 is defined between the first mounting plate 111, the second mounting plate 112, the two opposite side plates 12 and the bottom plate 20 of the intermediate bracket 10. The receiving space 60 is open on the back surface 14, and the distance between the two opposite side plates 12 is smaller than the distance between the two adjacent ring supports 103 of the W-shaped component 100.

[0067] See you next Figure 3A , Fig. 6A and Figure 6B The ladder subunit 11 is also equipped with a plurality of support assemblies 2 and a plurality of pressure plate assemblies 3, wherein the support assembly 2 includes a first support assembly 201 and a second support assembly 202. Figure 3A , Fig. 6A Figure 6B As shown, the first support assembly 201 is disposed on the first mounting plate 111 and the second mounting plate 112 of the intermediate bracket 10, and the first support assembly 201 is used to support the first mounting surface 301 and the second mounting surface 302 of the W-shaped plate assembly 100. And, as Figure 3A , Figure 3B and Figure 6B As shown, the second support assembly 202 is disposed on the side plate 12 of the intermediate bracket 10, and the second support assembly 202 is used to support the ring support 103 of the W-shaped plate assembly 100. Figure 3A , Figure 3B and Figure 6B As shown, the pressure plate assembly 3 is disposed on the side plate 12 of the intermediate bracket 10 , and the pressure plate assembly 3 is used for press-fitting with the ring support 103 of the W-shaped plate assembly 100 .

[0068] See also Figure 4 and Fig. 6A The two-end brackets 30 include the first mounting plate 111, the second mounting plate 112 and the side plate 12. The first mounting plate 111 on the two-end brackets 30 and the second mounting plate 112 on the two-end brackets 30 are spaced apart to form a slit 113, and an inclined groove 121 is provided on the side plate 12 of the two-end brackets 30. The inclined groove 121 is used to avoid the vertical plate 102 of the W-shaped plate assembly 100. The inclined groove 121 is connected to the slit 113, and the end of the vertical plate 102 of the W-shaped plate assembly 100 can pass through the slit 113 and then be accommodated in the inclined groove 121. In this embodiment, the angles formed by the inclined groove 121 and the first mounting plate 111 and the second mounting plate 112 are all 45°. The cooperation between the first mounting plate 111, the second mounting plate 112, the slit 113, the side plate 12 and the inclined groove 121 of the two end brackets 30 and the vertical plate 102 of the clamping surface 300 realizes the clamping and placement of the vertical plate 102 of the W-shaped plate assembly 100.

[0069] See you next Figure 3B , Figure 4 , Fig. 6A and Figure 6BThe first support assembly 201 and the second support assembly 202 are the same structural parts. The first support assembly 201 and the second support assembly 202 both include a support block 21, a retaining ring 22, a push rod 23 and a nut 24 connected in sequence. One end of the push rod 23 passes through the retaining ring 22 and is hinged to one end of the support block 21. The other end of the push rod 23 passes through the first mounting plate 111 or the second mounting plate 112 or the side plate 12 and then cooperates with the nut 24. The nut 24 abuts against the side of the first mounting plate 111 or the second mounting plate 112 or the side plate 12 away from the support block 21. The support block 21 of the first support assembly 201 is used to contact and cooperate with the first mounting surface 301 and the second mounting surface 302 of the mounting surface 300, and the support block 21 of the second support assembly 202 is used to perform surface contact cooperation with the ring support 103. Therefore, the support block 21 has good contact with the clamping surface 300 of the W-shaped plate assembly 100 , and the support block 21 is used to level the processing surface 400 of the W-shaped plate assembly 100 before processing.

[0070] like Figure 3B and Fig. 6A As shown, at the hinge between the push rod 23 and the support block 21, the hinge mode is a fixed hinge, and the push rod 23 has a spherical structure 231 at the hinge end, and a first groove and a second groove (not numbered) that are connected to each other are provided on the support block 21, and the spherical structure 231 is accommodated in the first groove, and the retaining ring 22 is embedded between the support block 21 and the spherical structure 231, and the retaining ring 22 is accommodated in the second groove, and the inner diameter of the retaining ring 22 is smaller than the maximum diameter of the spherical structure 231, and the retaining ring 22 is an elastic retaining ring, which can expand and be placed in the second groove of the support block 21, so as to prevent the support block 21 from falling off from the spherical structure 231. In this embodiment, the push rod 23 adopts a ball-head fixed push rod, and the push rod 23 cooperates with the support block 21 to increase the contact area between the support block 21 and the first clamping surface 301, the second clamping surface 302, and the surface of the ring support 103 of the W-shaped plate assembly 100, so that the W-shaped plate assembly 100 is subjected to more uniform force on the support block 21.

[0071] like Figure 3B and Fig. 6AAs shown, when the support block 21 of the first support assembly 201 contacts and cooperates with the mounting surface 300 of the W-shaped plate assembly 100, one end of the push rod 23 passes through the first mounting plate 111 or the second mounting plate 112 and is fixedly hinged to the end of the support block 21 facing away from the mounting surface 300, and the other end of the push rod 23 is connected to a nut 24, and the nut 24 abuts against the side of the first mounting plate 111 or the second mounting plate 112 facing away from the support block 21.

[0072] like Figure 3B and Figure 6B As shown, when the support block 21 of the second support assembly 202 contacts and cooperates with the surface of the ring support 103 of the W-shaped plate assembly 100, one end of the push rod 23 of the second support assembly 202 passes through the side plate 12 and is fixedly hinged with the end of the support block 21 away from the ring support 103, and the other end of the push rod 23 is connected to a nut 24, and the nut 24 abuts against the side of the side plate 12 away from the support block 21, that is, the nut 24 is arranged inside the accommodating space 60, and the outer peripheral surface of the push rod 23 is a threaded surface, and the nut 24 cooperates with the threaded surface of the push rod 23.

[0073] Please continue to see Figure 3B , Figure 4 and Figure 6B The pressure plate assembly 3 is arranged on the two opposite side plates 12 of the intermediate bracket 10, and the pressure plate assembly 3 cooperates with the ring support 103 of the W-shaped plate assembly 100; the pressure plate assembly 3 includes a pressure plate 35, a first stud 31 and a second stud 32, the first stud 31 and the second stud 32 are connected to the pressure plate 35, the ring support 103 and the side plate 12 in sequence, and the pressure plate 35 is in surface contact with the ring support 103 of the W-shaped plate assembly 100.

[0074] Please continue to see Figure 3A , Figure 3B and Figure 6B In this embodiment, the pressure plate assembly 3 further includes a second nut 33 and a washer 34 sleeved on the outer peripheral surface of the first stud 31; wherein the second nut 33 is arranged on the side of the pressure plate 35 away from the ring support 103 of the W-shaped plate assembly 100, and the washer 34 is arranged between the second nut 33 and the pressure plate 35; that is, the pressure plate assembly 3 is equivalent to being arranged outside the accommodating space 60. In addition, the support block 21 of the second support assembly 202 is arranged between the pressure plate 35 and the side plate 12, and the side of the W-shaped plate assembly 100 away from the pressure plate 35 is in surface contact with the support block 21 of the second support assembly 202.

[0075] See you next Figure 3A and Figure 4 In the first step unit 110, the second step unit 120 and the third step unit 130 corresponding to any of the step units 11, the height of each of the pressing plate components 3 relative to the bottom plate 20 is equal to the height of the second support component 202 on the same side plate 12 relative to the bottom plate 20. In addition, the second support component 202 and the pressing plate component 3 are symmetrically arranged on the side plate 12, and the second nut 33 of the pressing plate component 3 and the support block 21 of the second support component 202 are both arranged outside the accommodation space 60.

[0076] See you next Figure 3A and Figure 3B Threaded through holes are respectively provided on the first mounting plate 111, the second mounting plate 112 and the side plate 12, and the external threaded surfaces of the push rod 23, the first stud 31 and the second stud 32 are threadedly connected with the threaded through holes respectively.

[0077] In this embodiment, the pressure plate assembly 3, the second support assembly 202 and the side plate 12 cooperate to clamp the ring support 103 of the W-shaped plate assembly 100, thereby fixing the W-shaped plate assembly 100 and ensuring that when the machining surface 400 of the W-shaped plate assembly 100 is milled, the entire equipment after the clamping adjustment device and the W-shaped plate assembly 100 are assembled will not move relative to each other.

[0078] The use process of the clamping adjustment device described in this application includes:

[0079] (1) Fixing the bottom plate 20 of the base 1 on the processing table of a milling machine;

[0080] (2) Select three support assemblies 2 that are not on the same straight line along the second direction corresponding to the second mounting plate 112 and the first direction corresponding to the first mounting plate 111, and connect the three support blocks 21 to form a plane by adjusting the push rod 23, that is, the plane formed by the first support assembly 201 arranged on the second mounting plate 112, the first support assembly 201 arranged on the first mounting plate 111, and the second support assembly 202 arranged on the two opposite side plates 12, and the plane is the positive contact surface 13;

[0081] (3) placing one side of the clamping surface 300 of the W-shaped plate assembly 100 on the positive contact surface 13 of the clamping adjustment device;

[0082] (4) by respectively adjusting the first support assembly 201 disposed on the second mounting plate 112, the first support assembly 201 disposed on the first mounting plate 111, and the second support assembly 202 disposed on the two opposite side plates 12, the W-shaped plate 101 of the W-shaped plate assembly 100 is leveled;

[0083] (5) Tightening the second support assembly 202 and the pressure plate assembly 3 to cooperate with the ring support 103 of the W-shaped plate assembly 100 to fix the W-shaped plate assembly 100, so as to ensure that during the milling process of the processing surface 400 of the W-shaped plate assembly 100, the clamping adjustment device and the W-shaped plate assembly 100 will not move relative to each other during the clamping process;

[0084] (6) Adjust the first support assembly 201 to evenly support the W-shaped plate assembly 100, and adjust the push rod 23 by fixing the torque wrench so that the force on each part of the W-shaped plate 101 is even, so as to reduce processing deformation;

[0085] (7) Finally, tighten the nut 24 of the support assembly 2 to prevent the push rod 23 that has been rotated into place from loosening due to processing vibration.

[0086] Compared with the prior art, the clamping and adjusting device provided by the present invention has the following beneficial effects: the clamping and adjusting device has convenient and accurate leveling, clamping and fixing functions, can well meet the machining process requirements for the milling plane of the W-shaped plate assembly 100, that is, the machining surface 400, and can meet the plane machining accuracy and roughness requirements of the W-shaped plate assembly 100. Moreover, it can be used on various types of reactors in multiple nuclear power plants, making contributions to the development of my country's nuclear power industry.

[0087] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A clamping and adjusting device, suitable for clamping and adjusting the W-shaped plate assembly of a core cover, characterized in that: The clamping adjustment device comprises: A base, comprising a bottom plate and a plurality of intermediate brackets, wherein the intermediate brackets comprise two opposite side plates arranged on the bottom plate, and a plurality of ladder sub-units arranged in a step-like manner between the two opposite side plates, wherein the ladder sub-units comprise a first mounting plate arranged along a first direction and a second mounting plate arranged along a second direction; wherein the ladder sub-units further comprise: A support assembly, comprising a first support assembly and a second support assembly, wherein the first support assembly is respectively arranged on the first mounting plate and the second mounting plate, and the second support assembly is arranged on the side plate, the first support assembly is used to contact and cooperate with the clamping surface of the W-shaped plate assembly, and the second support assembly is used to contact and cooperate with the ring support surface of the W-shaped plate assembly; and, A pressure plate assembly is arranged on the side plate of the intermediate bracket, and the pressure plate assembly is used for pressing and fitting with the ring support; The first support assembly and the second support assembly each comprise a support block, a retaining ring, a push rod and a nut connected in sequence, one end of the push rod passes through the retaining ring and is hinged to one end of the support block, and the other end of the push rod passes through the first mounting plate or the second mounting plate or the side plate and then cooperates with the nut, wherein the support block of the first support assembly is used to contact and cooperate with the clamping surface, and the support block of the second support assembly is used to contact and cooperate with the ring support surface; At the hinged part of the push rod and the support block, the hinged mode is fixed hinged, the push rod is a ball-head type fixed push rod, the push rod has a spherical structure at the hinged end, a first groove and a second groove connected to each other are provided on the support block, the spherical structure is accommodated in the first groove, the retaining ring is embedded between the support block and the spherical structure, the retaining ring is accommodated in the second groove, and the inner diameter of the retaining ring is smaller than the maximum diameter of the spherical structure; The pressure plate assembly includes a pressure plate, a first stud, a second stud, a second nut and a washer, the first stud is connected to the pressure plate and the side plate in sequence, the second stud is connected to the pressure plate and the side plate in sequence, the second nut and the washer are arranged on the first stud, and the second nut is arranged on the side of the pressure plate away from the side plate, the washer is clamped between the second nut and the pressure plate, and the pressure plate is used to press fit with the second support assembly and to clamp the ring support; The first mounting plate, the second mounting plate, and the two opposite side plates of each intermediate bracket form a accommodating space with the bottom plate, the spacing between the two opposite side plates is smaller than the spacing between two adjacent ring supports of the W-shaped plate assembly, the nuts of the support assembly are all arranged inside the accommodating space, and the pressure plate of the pressure plate assembly, the ring support of the W-shaped plate assembly, and the support block of the support assembly are all arranged outside the accommodating space.

2. The clamping and adjusting device according to claim 1, characterized in that: The step sub-unit includes a first step sub-unit, a second step sub-unit and a third step sub-unit, wherein the heights of the first step sub-unit, the second step sub-unit and the third step sub-unit from the base plate decrease successively, wherein the first mounting plate, the second mounting plate and the side plate are arranged perpendicular to each other.

3. The clamping and adjusting device according to claim 1, characterized in that: The base also includes two end brackets, a connecting plate and a rib plate arranged on the bottom plate, the connecting plate and the rib plate are respectively arranged between adjacent two end brackets and the middle bracket, and between two adjacent middle brackets, the two end brackets include the first mounting plate, the second mounting plate and one of the side plates.

4. The clamping and adjusting device according to claim 3, characterized in that: The first mounting plate on the two end brackets and the second mounting plate on the two end brackets are spaced apart to form a slit, and an inclined groove is provided on the side plates of the two end brackets, the inclined groove is connected to the slit, and the end of the vertical plate of the W-shaped plate assembly passes through the slit and is accommodated in the inclined groove.

5. The clamping and adjusting device according to claim 4, characterized in that: The base is an integrated structural component, and the first mounting plate, the second mounting plate and the side plate of the intermediate bracket, the bottom plate, the connecting plate, the two end brackets, and the rib plate are all connected by welding.

6. The clamping and adjusting device according to claim 1, characterized in that: The first mounting plate, the second mounting plate and the side plate are respectively provided with threaded through holes, and the outer peripheral surfaces of the push rod, the first stud and the second stud are respectively threadedly matched with the threaded through holes.

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