Perpendicularity detection device for cross pull rod

Abstract

The utility model belongs to the technical field of perpendicularity detection, and particularly relates to a perpendicularity detection device for a cross pull rod, which comprises a workbench, a pressing component and a measuring component. The workbench comprises a base plate with the upper surface and the lower surface parallel, and grooves used for containing four pull rods of the cross-shaped pull rod are formed in the base plate. The pressing part is fixedly arranged below the groove and used for attaching and pressing the face, connected with the pull rod, of the bottom plate of the cross-shaped pull rod to the lower surface of the base plate. The measuring component comprises a base, a sliding rod, a sliding block and a precise dial indicator; the base is movably arranged on the upper surface of the substrate; the sliding rod is fixedly arranged on the base and is perpendicular to the upper surface of the base plate. The sliding block is in sliding connection with the sliding rod, and the precision dial gauge is connected to the sliding block. The device has the functions of part clamping, perpendicularity detection and the like, the overall structure is simple and compact, redundancy is avoided, the measurement principle is clear, the measurement precision is high, and convenience and reliability of operation in the detection process are guaranteed.

Description

Technical Field

[0001] The present application belongs to the technical field of verticality detection, and specifically relates to a verticality detection device for a cross tie rod. Background Art

[0002] The core filter assembly of a pressurized water reactor nuclear power plant is a filtration device installed on the core fuel assembly and piping. It is primarily used to filter impurities from the piping to ensure the safety of the core. The core filter assembly consists of multiple filter units, which are connected by cross-bars and connecting beams. To ensure the overall positioning accuracy of the filter units, the verticality of the cross-bars themselves is crucial.

[0003] The cross tie rod is primarily constructed by welding four tie rods to a cross-shaped base block. The core technical requirement is ensuring the perpendicularity of the four tie rods to the top surface of the cross-shaped base block after welding. Due to the structural characteristics of the cross tie rod, it cannot be directly inspected using a standard verticality gauge. Using advanced measuring equipment such as a CMM is costly and inefficient, making it unsuitable for mass production. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art or related art, namely, the problem of needing to detect the verticality of a cross tie rod quickly, efficiently and at low cost.

[0005] In view of this, the utility model provides a verticality detection device for a cross tie rod. This device can quickly detect the verticality of the cross tie rod based on the special structure of the cross tie rod and the slender characteristics of the tie rod, and ensure the convenience and reliability of the detection process operation.

[0006] The specific technical solutions include the following:

[0007] According to an embodiment of the present application, a verticality detection device for a cross tie rod is provided, comprising a workbench, a pressing component, and a measuring component.

[0008] The workbench includes a base plate with parallel upper and lower surfaces, and a groove is provided on the base plate for accommodating four pull rods of a cross pull rod; the clamping component is fixedly arranged below the groove, and is used to connect the bottom plate of the cross pull rod to one side of the pull rod and press it against the lower surface of the base plate; the measuring component includes a base, a sliding rod, a slider and a precision micrometer; the base is movably arranged on the upper surface of the base plate; the sliding rod is fixedly arranged on the base and is perpendicular to the upper surface of the base plate; the slider is slidably connected to the sliding rod, and the precision micrometer is connected to the slider.

[0009] Furthermore, the workbench also includes a support frame; one end of the support frame is set on the ground, and the other end is fixedly provided with the base plate.

[0010] Furthermore, a plurality of adjustable pads are provided on one end of the support frame disposed on the ground, for adjusting the levelness of the substrate.

[0011] Furthermore, the pressing component is fixedly arranged on the supporting frame.

[0012] Furthermore, the clamping component includes a support block, a clamping block and a knob; the support block is used to fix the clamping component under the groove; the clamping block is located between the support block and the substrate; the knob is located at the end of the support block away from the substrate, and the bolt of the knob passes through the through hole of the support block through a threaded connection and is connected to the clamping block.

[0013] Preferably, the slider includes a height gauge.

[0014] Preferably, the base is movably arranged on the upper surface of the substrate, which includes: the base is made of magnetic material, and the substrate is made of steel.

[0015] Preferably, the base is movably arranged on the upper surface of the substrate, which includes: a surface of the base that is in contact with the substrate is a suction cup structure.

[0016] Furthermore, a connecting plate is fixed on the sliding block; and the precision micrometer is connected to the connecting plate via a dial base.

[0017] Furthermore, it also includes a driving member; the driving member is connected to the slider and is used to drive the slider to slide up and down along the slide rod.

[0018] Compared with the prior art, the present invention has at least the following beneficial effects:

[0019] This application addresses the unique structure and slenderness of the cross tie rods, designing a detection device that can quickly measure the verticality of the tie rods by measuring the changes in the values ​​of tools such as a micrometer when the tie rods are in different positions from bottom to top. The freely movable measuring components also facilitate measurement of all four tie rods. This device features functions such as part clamping and verticality detection, and its streamlined and compact overall structure avoids redundancy. Its clear measurement principles and high accuracy ensure convenient and reliable operation during the detection process, providing an important measurement tool for the manufacture of cross tie rods and even core filter assemblies. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Various other advantages and benefits will become apparent to those skilled in the art by reading the detailed description of the preferred embodiment below. The accompanying drawings are only for the purpose of illustrating the preferred embodiment and are not to be considered as limiting the present application. In the accompanying drawings:

[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present application;

[0022] Figure 2 This is a schematic diagram of the cross-bar structure of an embodiment of the present application;

[0023] Figure 3 This is a schematic diagram of the workbench structure of an embodiment of the present application;

[0024] Figure 4 This is a schematic diagram of the structure of the pressing component in an embodiment of the present application;

[0025] Figure 5 This is a schematic diagram of the measurement component structure of an embodiment of the present application.

[0026] The reference numerals indicate:

[0027] 1- working table; 11- base plate; 111- groove; 12- support frame; 13- adjustable pad;

[0028] 2-pressing component; 21-support block; 211-through hole; 22-pressing block; 23-knob;

[0029] 3- measuring component; 31- base; 32- slide rod; 33- slider; 34- precision dial indicator; 35- connecting plate; 36- base;

[0030] 4-cross tie rod; 41-tie rod; 42-base plate. DETAILED DESCRIPTION

[0031] In order to better understand the above technical solution, the technical solution of the embodiment of the present application is described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiment of the present application and the specific features in the embodiment are detailed descriptions of the technical solution of the embodiment of the present application, rather than limitations on the technical solution of the present application. In the absence of conflict, the embodiment of the present application and the technical features in the embodiment can be combined with each other.

[0032] In view of this, according to an embodiment of the present application, a verticality detection device for a cross tie rod is provided, comprising a workbench 1, a pressing component 2 and a measuring component 3.

[0033] In which, the workbench 1 includes a base plate 11 with parallel upper and lower surfaces, and a groove 111 is provided on the base plate 11 for accommodating the four pull rods 41 of the cross pull rod 4; the clamping component 2 is fixedly arranged below the groove 111, and is used to connect the bottom plate 42 of the cross pull rod 4 to one side of the pull rod 41 (hereinafter referred to as the upper surface of the bottom plate 42) and press it against the lower surface of the base plate 11; the measuring component 3 includes a base 31, a sliding rod 32, a slider 33 and a precision micrometer 34; the base 31 is movably arranged on the upper surface of the base plate 11; the sliding rod 32 is fixedly arranged on the base 31 and is perpendicular to the upper surface of the base plate 11; the slider 33 is slidably connected to the sliding rod 32, and the precision micrometer 34 is connected to the slider 33.

[0034] like Figure 1 、 Figure 2 、 Figure 3 and Figure 5 As shown, the bottom plate 42 of the cross tie rod 4 to be tested is pressed against the lower surface of the substrate 11 by the pressing component 2, and the four tie rods 41 extend through the groove 111 to the top of the substrate 11 so that the tie rods 41 can be tested. The base 31 can move arbitrarily on the upper surface of the substrate 11, thereby driving the precision micrometer 34 to easily and quickly approach any one of the four tie rods 41 for measurement. During measurement, adjust the precision micrometer 34 so that its measuring head contacts the lowermost end of the tie rod 41 to be tested and record the initial value; by adjusting the slider 33, the precision micrometer 34 is moved from bottom to top and the extreme value of the precision micrometer 34 during the sliding process is recorded, and then the extreme value is compared with the initial value to obtain the verticality of the tie rod 41.

[0035] It should be noted that because the upper and lower surfaces of the substrate 11 are parallel, and the upper surface of the bottom plate 42 is in close contact with the lower surface of the substrate 11, the upper surface of the bottom plate 42 is ensured to be parallel to the upper surface of the substrate 11. At this point, the slide bar 32 is perpendicular to the upper surface of the substrate 11, which also ensures that the slide bar 32 is perpendicular to the upper surface of the bottom plate 42, thereby enabling the detection of the perpendicularity of the pull rod 41 relative to the upper surface of the bottom plate 42. In a specific embodiment, the parallelism of the upper and lower surfaces of the substrate 11 is less than 0.02 mm, fully ensuring the accuracy of subsequent benchmarks.

[0036] Furthermore, in one embodiment, Figure 3 As shown, the workbench 1 further includes a support frame 12 ; one end of the support frame 12 is set on the ground, and the other end is fixedly provided with the base plate 11 .

[0037] Furthermore, in one embodiment, Figure 3 As shown, a plurality of adjustable pads 13 are provided on one end of the support frame 12 disposed on the ground, for adjusting the levelness of the base plate 11 .

[0038] In a specific embodiment, the support frame 12 is made of aluminum alloy, and the substrate 11 is fixed to the support frame 12 by bolts. A plurality of adjustable pads 13 are evenly arranged at the bottom end of the support frame 12 and are threadedly connected to the bottom end of the support frame 12 by bolts. The adjustment bolts can adjust the extension height of the adjustable pads 13, and the horizontality of the substrate 11 can be adjusted by adjusting the bolts of the plurality of adjustable pads 13. It should be noted that the adjustment method of the adjustable pads 13 is not limited to bolt adjustment, and other feasible adjustment methods such as hydraulic pressure are allowed in this application.

[0039] Furthermore, in one embodiment, Figure 1 As shown, the pressing component 2 is fixedly arranged on the support frame 12. In order to ensure that the bottom plate 42 and the base plate 11 are tightly pressed, the relative positions of the pressing component 2 and the base plate 11 must be fixed, so fixing the pressing component on the support frame 12 ensures this necessary requirement.

[0040] Furthermore, in one embodiment, Figure 4 As shown, the clamping component 2 includes a support block 21, a clamping block 22 and a knob 23; the support block 21 is used to fix the clamping component 2 below the groove 111; the clamping block 22 is located between the support block 21 and the substrate 11; the knob 23 is located at the end of the support block 21 away from the substrate 11, and the bolt of the knob 23 is threaded through the through hole 211 of the support block 21 and connected to the clamping block 22.

[0041] In a specific embodiment, the support block 21 is fixed to the support frame 12 by bolts. During operation, the side of the bottom plate 42 of the cross-pull rod to be tested, away from the pull rod 41, is placed on the end of the clamping block 22 away from the support block 21. By rotating the knob 23 and the support block 21 to generate a threaded tightening force, the clamping block 22 is driven toward or away from the base plate 11, thereby pressing or loosening the bottom plate 42 against the base plate 11. It should be noted that the method of pushing the bottom plate 42 upward and pressing it against the base plate 11 is not limited to a knob; other feasible methods such as hydraulic pressure are permitted in this application.

[0042] Preferably, in one embodiment, the slider 33 includes a dial height gauge, which can more accurately measure the detection data of the precision dial indicator 34 at a specific height position, making the final measurement data more accurate.

[0043] Preferably, in one embodiment, the base 31 is movably disposed on the upper surface of the substrate 11, including: the base 31 is made of a magnetic material, and the substrate 11 is made of steel. During actual operation, the base 31 is pushed to the desired position, and the magnetic force between the base 31 and the substrate 11 automatically and firmly adsorbs the base 31 to the substrate 11, thereby achieving rapid movement while ensuring that the lower surface of the base 31 and the upper surface of the substrate 11 are in close contact, thereby minimizing errors. In a specific embodiment, the substrate 11 is made of quenched and tempered No. 45 steel, which has high strength and is not easily deformed during long-term use.

[0044] Preferably, in one embodiment, the base 31 is movably disposed on the upper surface of the substrate 11, including: a surface of the base 31 that contacts the substrate 11 is a suction cup structure. During operation, the base 31 is moved to a desired position, and the suction cup is activated to attach the base 31 to the substrate 11, similarly achieving rapid movement while ensuring that the lower surface of the base 31 is in close contact with the upper surface of the substrate 11. It should be noted that other technical solutions that can ensure that the base 31 is freely movable and fixed on the substrate 11 are permitted in this application.

[0045] Furthermore, in one embodiment, Figure 5 As shown, a connecting plate 35 is fixed to the slider 33; the precision dial indicator 34 is connected to the connecting plate 35 via a dial base 36. In a specific embodiment, the connecting plate 35 and the slider 33, the precision dial indicator 34 and the dial base 36, and the dial base 36 and the connecting plate 35 are all connected by bolts.

[0046] Furthermore, in one embodiment, a driving member is further included; the driving member is connected to the slider 33 and is used to drive the slider 33 to slide up and down along the slide bar 32. In a specific embodiment, in order to make the up and down sliding of the slider 33 more stable and uniform, the driving member can be used to push the slider 33 to move, thereby making the measurement data more accurate.

[0047] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0048] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A device for detecting the verticality of a cross tie rod, characterized in that: It comprises a workbench (1), a pressing component (2) and a measuring component (3); The workbench (1) comprises a base plate (11) with parallel upper and lower surfaces, and a groove (111) is provided on the base plate (11) for accommodating four pull rods (41) of a cross pull rod (4); The pressing component (2) is fixedly arranged below the groove (111) and is used to fit and press the side of the bottom plate (42) of the cross tie rod (4) connected to the tie rod (41) to the lower surface of the base plate (11); The measuring component (3) comprises a base (31), a slide rod (32), a slider (33) and a precision micrometer (34); The base (31) is movably arranged on the upper surface of the substrate (11); The sliding rod (32) is fixedly arranged on the base (31) and is perpendicular to the upper surface of the substrate (11); The slider (33) is slidably connected to the slide rod (32), and the precision micrometer (34) is connected to the slider (33).

2. The verticality detection device for a cross tie rod according to claim 1, characterized in that: The workbench (1) further includes a support frame (12); One end of the support frame (12) is arranged on the ground, and the other end is fixedly provided with the base plate (11).

3. The verticality detection device for a cross tie rod according to claim 2, characterized in that: A plurality of adjustable pads (13) are provided on one end of the support frame (12) disposed on the ground, for adjusting the horizontality of the base plate (11).

4. The verticality detection device for a cross tie rod according to claim 2, characterized in that: The pressing component (2) is fixedly arranged on the supporting frame (12).

5. The verticality detection device for a cross tie rod according to claim 1, characterized in that: The pressing component (2) comprises a supporting block (21), a pressing block (22) and a knob (23); The support block (21) is used to fix the pressing component (2) below the groove (111); The pressing block (22) is located between the supporting block (21) and the base plate (11); The knob (23) is located at one end of the support block (21) away from the base plate (11), and the bolt of the knob (23) passes through the through hole (211) of the support block (21) through a threaded connection and is connected to the pressing block (22).

6. The verticality detection device for a cross tie rod according to claim 1, characterized in that: The slider (33) includes a height gauge.

7. The verticality detection device for a cross tie rod according to claim 1, characterized in that: The base (31) is movably arranged on the upper surface of the substrate (11), comprising: the base (31) is made of magnetic material, and the substrate (11) is made of steel.

8. The verticality detection device for a cross tie rod according to claim 1, characterized in that: The base (31) is movably arranged on the upper surface of the substrate (11), and comprises: a surface of the base (31) that is in contact with the substrate (11) is a suction cup structure.

9. The verticality detection device for a cross tie rod according to claim 1, characterized in that: A connecting plate (35) is fixed on the slider (33); The precision micrometer (34) is connected to the connecting plate (35) via a meter base (36).

10. The verticality detection device for a cross tie rod according to claim 1, characterized in that: Also includes a drive member; The driving member is connected to the slider (33) and is used to drive the slider (33) to slide up and down along the slide rod (32).

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