CN201893127U

CN201893127U - Mounting base capable of quickly adjusting accuracy

Info

Publication number: CN201893127U
Application number: CN2010206364846U
Authority: CN
Inventors: 兰智彬; 郭旭林; 尤勇; 孙毓宝; 邓昌义; 郭翔
Original assignee: China Jianzhong Nuclear Fuel Co Ltd
Current assignee: China Jianzhong Nuclear Fuel Co Ltd
Priority date: 2010-12-01
Filing date: 2010-12-01
Publication date: 2011-07-06
Anticipated expiration: 2020-12-01

Abstract

The utility model relates to the inspection field of fuel assemblies, in particular to a mounting base capable of quickly adjusting accuracy. The mounting base comprises a workbench, a support, a leveling bolt and a locking bolt, wherein the workbench is provided with a round plate, the support is arranged under the round plate, the locking bolt penetrates through the round plate on the workbench to connect the support with the workbench, the leveling bolt is integrally sleeved outside the locking bolt and is fixed in a hole in the round plate on the workbench through threaded connection, a rotating cutting sleeve is sleeved outside the locking bolt, and the leveling bolt is fixed in a wedge-shaped groove of the rotating cutting sleeve. According to the mounting base provided by the utility model, the mounting accuracy of a base of a fuel assembly inspection tester can be quickly adjusted; through the design of chutes on the rotating cutting sleeve and a spherical bearing, spherical washers are arranged, so that compacting planes of the locking bolt and the leveling bolt can be automatically centered, surface contact is realized when the spherical washers and the compacting planes are compacted, and uniform stress of the compacting planes is more favored; and since an adjusting supporting point and a locking supporting point are on the same location, the base can be quickly adjusted and locked to be positioned.

Description

But a kind of mounting seat of quick adjustment precision

Technical field

The utility model belongs to fuel assembly and checks the field, is specifically related to a kind of mounting seat of adjustable precision.

Background technology

The base leveling of being understood at present of having relatively high expectations and fastening method be levelling bolt with trip bolt on different points, this leveling method is few at interference factor, less demanding and the base of base leveling is implemented the leveling ratio more in short-term and is easier to, but longer at the base that needs leveling, and quite difficulty of leveling work is then implemented in the base leveling when having relatively high expectations.

In the s Nuclear Plant envelope contour detects automatically, base leveling accuracy requirement high (0.005mm/m) to the fuel assembly somascope, and its corresponding base need often be changed and adjust to the fuel assembly somascope when checking dissimilar nuclear fuel assemblies.Simultaneously, need to be provided with the grating chi mounting seat of linear measure longimetry on the fuel assembly somascope, be used to paste the open grating chi of Reinshaw, this open grating chi reaches 6 meters, and be that non-machined surface on the original column of component inspection instrument is installed and leveling, its accuracy requirement is 0.005mm/m, therefore must solve grating chi mounting seat and the installation accuracy of fuel assembly somascope base and the problem of installation rate.

In the prior art of the mounting seat of fuel assembly somascope, the mounting seat structure that has level(l)ing device commonly used as shown in Figure 1, worktable 1 upper surface is a workplace 13, directly lock-screw 12 is installed on worktable 1 circumferencial direction by spherical bearing 4 and spheric washer, worktable 1 and bearing 10 are compressed, passing through to regulate levelling bolt 5, leveling workplace 13.Though this regulative mode project organization is simple, but in the process of practical installation and trial, especially in the installation process of high level of accuracy position (or upright position), because leveling and locking is not on same position, therefore, after the leveling in when locking, the level of adjustable plate inevitably will change, and the size of this variation is not only relevant with the size of coupling mechanism force, but also it is relevant with the relative position of leveling point and locking point, when debugging, can not directly reflect actual due regulated quantity.

Summary of the invention

But the purpose of this utility model is to provide a kind of mounting seat of quick adjustment fuel assembly somascope installation accuracy, and it can improve the installation accuracy and the installation rate of grating chi mounting seat and fuel assembly somascope base.

The technical solution of the utility model is as follows:

But a kind of mounting seat of quick adjustment precision, it comprises worktable, bearing, levelling bolt and lock-screw, worktable is provided with disk; Evenly be provided with the hole on the disk circumference direction, the disk below is a bearing, the disk that lock-screw passes on the worktable is connected bearing with worktable, described levelling bolt is a tubular, its upper end is a wedge shape, integral assembling is outside lock-screw, and the levelling bolt outer wall is provided with screw thread, is fixed on by being threaded in the hole on the disk of worktable; The levelling bolt top is provided with and is sleeved on the outer rotation cutting ferrule of lock-screw equally, and its lower surface is provided with wedge-shaped impression, and levelling bolt is fixed in the wedge-shaped impression of rotation cutting ferrule by the wedge structure of its upper end; Between levelling bolt and bearing, be provided with spherical bearing.

But in the mounting seat of above-mentioned a kind of quick adjustment precision: described revotating card cover upper surface has skewed slot, is provided with spheric washer I in the skewed slot.

But in the mounting seat of above-mentioned a kind of quick adjustment precision: described spherical bearing upper surface has skewed slot, and skewed slot is provided with spheric washer II.

The beneficial effects of the utility model are: by levelling bolt is sleeved on outside the lock-screw, and at levelling bolt rotation cutting ferrule and spherical bearing are set respectively up and down, make the installation accuracy that this device can quick adjustment fuel assembly somascope base; Further design by oblique notching on rotation cutting ferrule and the spherical bearing, the mounting spherical packing ring can the automatic capturing lock-screw and the clamping plane of levelling bolt, is the face contact when it is compressed, and it is evenly stressed to help seal face more; Owing to regulating fulcrum and locking fulcrum, make the adjustment of base and locking positioning become very simple, quick at same position.

Description of drawings

Fig. 1 is the mounting seat structural representation of existing fuel assembly somascope;

But the mounting seat one-piece construction synoptic diagram of a kind of quick adjustment precision that Fig. 2 provides for the utility model;

Fig. 3 is Fig. 2 partial enlarged drawing;

Fig. 4 analyses and observe the rotation cutting ferrule and the levelling bolt scheme of installation of direction signal for Fig. 3 A-A;

Among the figure: 1. worktable; 2. disk; 3. hole; 4. spherical bearing; 5. levelling bolt; 6. rotation cutting ferrule; 7. wedge-shaped impression; 8. spheric washer I; 9. spheric washer II; 10. bearing; 11. skewed slot; 12. lock-screw; 13. workplace.

Embodiment

Below in conjunction with drawings and the specific embodiments the utility model is described in further detail.

As Fig. 2, Fig. 3 and shown in Figure 4, have hole 3 on the disk 2 of worktable 1, the last hypomere end internal diameter in hole 3 is big, and the stage casing internal diameter is less.3 following fragment position is placed with spherical bearing 4 in the hole, be placed with levelling bolt 5 at epimere and stage casing, between levelling bolt 5 and spherical bearing 4, be placed with spheric washer II9, levelling bolt 5 stretches out the upper surface of the disk 2 of worktable, extend in the rotation cutting ferrule 6 of disk 2 tops, place spheric washer I 8 on the rotation cutting ferrule 6.

Rotation cutting ferrule 6 is processed into the skewed slot 11 that is fit to spheric washer I 8 installations for opening tubular structure up and down on its upper surface, its lower surface caves inward, and forms wedge-shaped impression 7; Levelling bolt 5 also is a tubular structure, its upper end is the wedge structure suitable with wedge-shaped impression 7, the upper end extend in the wedge-shaped impression 7, make the rotation cutting ferrule block levelling bolt, be processed with screw thread on the inwall of levelling bolt 5 lower ends, form threaded engagement with lock-screw 13, the inwall of levelling bolt 5 lower ends also is processed with screw thread, thereby in the hole 3 on the screw-in disk 2; Spherical bearing 10 is also open-minded up and down, and spherical bearing 10 upper surfaces are processed into equally and are fit to the skewed slot 11 that spheric washer II9 installs;

Lock-screw 12 passes spheric washer I 8, rotation cutting ferrule 6, levelling bolt 5, spheric washer II9 and spherical bearing 10 successively, on the corresponding position of bearing 10 and lock-screw 12, open the hole, lock-screw 12 enters in the through hole of bearing 10, and spherical bearing 4 lower surfaces directly touch the upper surface of bearing 10.

Can 3 above-mentioned structures be installed in disk perimeter, during work, after utilizing the levelness of lock-screw leveling worktable table top on each direction, regulate the same position point locking worktable of fulcrum at substructure height, at this moment, spheric washer I can the automatic capturing lock-screw clamping plane, when being compressed, it is the face contact, utilize the rotation cutting ferrule to rotate levelling bolt, levelling bolt can be regulated the height of whole erection base, makes the work top level, spherical bearing can guarantee that two ends are the face contact up and down, increase its load-bearing capacity, the clamping plane that spheric washer II can the automatic capturing levelling bolt is the face contact when it is compressed.

Claims

But 1. the mounting seat of a quick adjustment precision, it comprises worktable (1), bearing (10), levelling bolt (5) and lock-screw (12), worktable (1) is provided with disk (2); Evenly be provided with hole (3) on disk (2) circumferencial direction, disk (2) below is bearing (10), the disk (2) that lock-screw (12) passes on the worktable (1) is connected bearing (10) with worktable (1), it is characterized in that: described levelling bolt (5) is a tubular, its upper end is a wedge shape, integral assembling is outside lock-screw (12), and levelling bolt (5) outer wall is provided with screw thread, is fixed on by being threaded in the hole (3) on the disk (2) of worktable (1); Levelling bolt (5) top is provided with and is sleeved on the outer rotation cutting ferrule (6) of lock-screw (12) equally, and its lower surface is provided with wedge-shaped impression (7), and levelling bolt (5) is fixed in the wedge-shaped impression (7) of rotation cutting ferrule (6) by the wedge structure of its upper end; Between levelling bolt (5) and bearing (10), be provided with spherical bearing (4).
2. but the mounting seat of a kind of quick adjustment precision as claimed in claim 1 is characterized in that: described rotation cutting ferrule (6) upper surface has skewed slot (11), is provided with spheric washer I (8) in the skewed slot (11).
3. but the mounting seat of a kind of quick adjustment precision as claimed in claim 1 or 2 is characterized in that: described spherical bearing (4) upper surface has skewed slot (11), and skewed slot (11) is provided with spheric washer II (9).