CN204165708U

CN204165708U - A kind of fast assembling-disassembling hydraulic pressure test fixture

Info

Publication number: CN204165708U
Application number: CN201420489426.3U
Authority: CN
Inventors: 张小勇; 刘仁武
Original assignee: Henan Diesel Engine Industry Co Ltd
Current assignee: Henan Diesel Engine Industry Co Ltd
Priority date: 2014-08-28
Filing date: 2014-08-28
Publication date: 2015-02-18
Anticipated expiration: 2024-08-28

Abstract

The utility model belongs to pressure test experimental technique field, relates generally to a kind of fast assembling-disassembling hydraulic pressure test fixture, and a kind of fast assembling-disassembling hydraulic pressure test fixture of proposition includes pressure testing cover (1), pressure testing body (2), fastening screw (4) and O type circle (3).The feature of the utility model test tool is: meet different pressure testing part hydraulic pressure pressure testing demand; The pressure testing cover taper thread diameter of Group Design, is applicable to the different screw thread specifications of pressure testing part spare interface, cost-saving; Dismounting fast, simple, work efficiency is high.

Description

A kind of fast assembling-disassembling hydraulic pressure test fixture

Technical field

The utility model belongs to pressure test experimental technique field, relates generally to a kind of fast assembling-disassembling hydraulic pressure test fixture, also can be applied to air pressure or oil test and other pressure test technical field.

Background technology

Many airtight parts, after completing processing or parts assembling, in order to avoid in use there is seepage, need to carry out impermeability test to it before submission user.Because water cost is low, resource is many, and parts are once seepage, have water and flow out rapidly, therefore detect parts sealing many employings hydraulic testing.Because parts are of a great variety, different, its spare interface shape for the hydraulic testing is also different, need according to parts spare interface profile design special tooling before the hydraulic testing, traditional hydraulic pressure test fixture is all designed to integral type, its one end is designed to the flange arrangement matched with pressure testing part spare interface, be connected with pressure testing part with bolt, dependence special washer seals, the other end welds one section of pipeline, be connected with pressure testing rubber tube, once generation seepage needs to back out coupling bolt in test, pull down hydraulic pressure test fixture, ressemble again after the repairing of pressure testing part is intact and continued test, the pressure pressure testing of next part is proceeded to again after a pressure testing part completes said process.As can be seen here, the current hydraulic testing not only needs design specialized frock, and test before install loaded down with trivial details, occur seepage and the renewal part used time longer, inefficiency.

Utility model content

For solving the problems of the technologies described above, the utility model proposes a kind of fast assembling-disassembling hydraulic pressure test fixture, realizing the fast assembling-disassembling in pressure testing component test process.

The utility model adopts following technical proposals to complete its invention task:

A kind of fast assembling-disassembling hydraulic pressure test fixture, described test tool includes pressure testing cover, pressure testing body, fastening screw and O type circle; Described pressure testing cover is inner, an outside telescoping structure all becoming step, the upper end cylindrical of described pressure testing cover is designed to the taper thread structure be connected with pressure testing part, the intermediate step outside of pressure testing cover is regular hexagon, be convenient to the dismounting of pressure testing cover, the bottom of described pressure testing cover is designed with the pilot hole installed for fastening screw; Pilot hole for along pressure testing cover center line symmetrically arranged two groups to wearing manhole, often organize two pilot holes; The endoporus of described pressure testing cover is the stepped hole be made up of the different top endoporus in aperture and middle part, bottom endoporus; The endoporus aperture, top of described pressure testing cover is less than pressure testing cover middle part, bottom endoporus and the aperture of pressure testing cover middle part, bottom endoporus is identical; Described pressure testing body be arranged on described pressure testing cover middle part, in the endoporus of bottom; Described pressure testing body is the telescoping structure of an outside one-tenth step, and middle part is overlapped in the cylindrical of pressure testing body and pressure testing, bottom inner hole wall is clearance fit; The middle part of the periphery of described pressure testing body has one section of minor diameter periphery, minor diameter periphery diameter in the middle part of the external disc of pressure testing is less than the diameter of pressure testing body top, bottom periphery, reduced diameter section periphery in the middle part of pressure testing body forms the ring groove in the middle part of pressure testing body, when pressure testing body and pressure testing being overlapped locate, pass for fastening screw; Ring groove in the middle part of described pressure testing body is corresponding with the pilot hole that pressure testing puts setting, and pressure testing body top periphery has the ring groove arranging O type circle, seals between overlapping to pressure testing body and pressure testing, prevents water in pressure testing process from overflowing structure for pressure test; The confined planes that in the middle part of pressure testing body, ring groove upper surface moves down as restriction pressure testing body; The lower end of described pressure testing body has round boss, for connecting pressure testing rubber pipeline, prevents coming off of rubber pipeline; The endoporus of pressure testing body is a unthreaded hole, and to overlap endoporus aperture, top identical with pressure testing, forms pressure testing intake tunnel; Described fastening screw to be a cross section be circular U-shaped structure, it is identical that pilot hole centre distance is overlapped in U-shaped opening and pressure testing.

According to the screw thread specification of pressure testing part spare interface, process the pressure testing cover that one group of taper thread diameter is different, described one group of pressure testing cover taper thread presses 2mm size increments by ZM14 to ZM24 diameter, and the pressure testing cover positive six shape sizes in middle part and other size all remain unchanged, according to the screw thread specification of spare interface before test, select the pressure testing cover of different taper thread diameter, to reach good sealing effectiveness.Multiple pressure testing cover can be made to the pressure testing part of batch production, keep other assembly constant, take streamline pressure testing, and to occurring that repairing treatment concentrated by the pressure testing part of seepage.

The feature of a kind of fast assembling-disassembling hydraulic pressure test fixture described in the utility model is: 1, meet different pressure testing part hydraulic pressure pressure testing demand; 2, the pressure testing cover taper thread diameter of Group Design, is applicable to the different screw thread specifications of pressure testing part spare interface, cost-saving; 3, dismounting fast, simple, work efficiency is high.

Accompanying drawing explanation

Fig. 1 is the utility model pressurising pre-structure schematic diagram;

Fig. 2 is structural representation after the utility model pressurising;

In figure: 1, pressure testing cover; 2, pressure testing body; 3, O type circle; 4, fastening screw; 5, pressure testing part; 6, rubber pipeline.

Embodiment

By reference to the accompanying drawings and specific embodiment, the utility model is illustrated:

A kind of fast assembling-disassembling hydraulic pressure test fixture, described test tool includes pressure testing cover 1, pressure testing body 2, fastening screw 4 and O type circle 3; Described pressure testing cover 1 is inner, an outside telescoping structure all becoming step, the upper end cylindrical of described pressure testing cover 1 is designed to the taper thread structure be connected with pressure testing part 5, the intermediate step outside of pressure testing cover 1 is regular hexagon, be convenient to the dismounting of pressure testing cover, the bottom of described pressure testing cover is designed with the pilot hole installed for fastening screw 4, pilot hole for along pressure testing cover center line symmetrically arranged two groups to wearing manhole, namely two latch arm of fastening screw 4 are each passed through one group of two pilot hole; The endoporus of described pressure testing cover is the stepped hole be made up of the different top endoporus in aperture and middle part, bottom endoporus; The endoporus aperture, top of described pressure testing cover is less than pressure testing cover middle part, bottom endoporus and the aperture of pressure testing cover middle part, bottom endoporus is identical; Described pressure testing body 2 be arranged on described pressure testing cover 1 middle part, in the endoporus of bottom; Described pressure testing body 2 is the telescoping structure of an outside one-tenth step, and middle part is overlapped in the cylindrical of pressure testing body 2 and pressure testing, bottom inner hole wall is clearance fit; The middle part of the periphery of described pressure testing body 2 has one section of minor diameter periphery, minor diameter periphery diameter in the middle part of the external disc of pressure testing is less than the diameter of pressure testing body top, bottom periphery, reduced diameter section periphery in the middle part of pressure testing body forms the ring groove in the middle part of pressure testing body, make pressure testing body 2 and pressure testing overlap 1 when locating, pass for fastening screw 4; Ring groove in the middle part of described pressure testing body is corresponding with the pilot hole that pressure testing puts setting, and pressure testing body top periphery has the ring groove arranging O type circle 3, seals between overlapping to pressure testing body and pressure testing, prevents water in pressure testing process from overflowing structure for pressure test; The confined planes that in the middle part of pressure testing body 2, ring groove upper surface moves down as restriction pressure testing body; The lower end of described pressure testing body has round boss, for connecting pressure testing rubber pipeline 6, prevents coming off of rubber pipeline; The endoporus of pressure testing body is a unthreaded hole, and to overlap endoporus aperture, top identical with pressure testing, forms pressure testing intake tunnel; Described fastening screw 4 to be a cross section be circular U-shaped structure, it is identical that pilot hole centre distance is overlapped in U-shaped opening and pressure testing.

The utility model assembling process: select suitable pressure testing cover 1 to be arranged on pressure testing part 5, O type circle 3 is arranged on pressure testing body 2, pressure testing water rubber tube 6 is connected on pressure testing body, then pressure testing body 2 is pressed in pressure testing cover 1, after the step surface overlapping 1 endoporus until pressure testing body 2 upper surface with pressure testing contacts, fastening screw 4 is overlapped ring groove in the middle part of 1 side pilot hole, pressure testing body 2 through pressure testing successively, pressure testing overlaps 1 opposite side pilot hole.

After test tool is in place, open pressure testing taps, pressure testing water enters endoporus by rubber tube 6 bottom pressure testing body 2, flow through pressure testing along pressure testing body 2 endoporus to overlap 1 top endoporus and enter the airtight cavity of pressure testing part, after the airtight cavity of pressure testing part is full of, along with the continuation of pressure testing water is injected, pressure in pressure testing cover A chamber progressively increases, now the pressure testing water of larger pressure promotes pressure testing body 2 and overlaps 1 axial direction along pressure testing and move down, enter in B chamber that pressure testing cover 1 formed with pressure testing body 2 upper end, as shown in Figure 2, until fastening screw 4 is stuck in the upper limit position of pressure testing body 2 Middle Trough.When the pressure testing water pressure of pressure testing part reaches specified value, observe the sealing situation of pressure testing part, as there is Seepage, at once pull out fastening screw 4, take out pressure testing body 1, ressemble after pressure testing part is repaired and continue test, if pressure testing part ne-leakage phenomenon occurs, pull out fastening screw 4 too, take out pressure testing body 1, carry out assembling and the test of next pressure testing part.

Claims

1. a fast assembling-disassembling hydraulic pressure test fixture, is characterized in that: described test tool includes pressure testing cover (1), pressure testing body (2), fastening screw (4) and O type circle (3); Described pressure testing cover (1) is inner, an outside telescoping structure all becoming step, the upper end cylindrical of described pressure testing cover (1) is designed to the taper thread structure be connected with pressure testing part (5), the intermediate step outside of pressure testing cover (1) is regular hexagon, be convenient to the dismounting of pressure testing cover, the bottom of described pressure testing cover (1) is designed with the pilot hole installed for fastening screw (4), pilot hole for along pressure testing cover (1) center line symmetrically arranged two groups to wearing manhole, often organize two pilot holes; The endoporus of described pressure testing cover (1) is the stepped hole be made up of the different top endoporus in aperture and middle part, bottom endoporus; The endoporus aperture, top of described pressure testing cover is less than pressure testing cover middle part, bottom endoporus and the aperture of pressure testing cover middle part, bottom endoporus is identical; Described pressure testing body (2) be arranged on described pressure testing cover middle part, in the endoporus of bottom; Described pressure testing body (2) is the telescoping structure of an outside one-tenth step, and middle part is overlapped in the cylindrical of pressure testing body (2) and pressure testing, bottom inner hole wall is clearance fit; The middle part of the periphery of described pressure testing body has one section of minor diameter periphery, minor diameter periphery diameter in the middle part of the external disc of pressure testing is less than the diameter of pressure testing body top, bottom periphery, reduced diameter section periphery in the middle part of pressure testing body forms the ring groove in the middle part of pressure testing body, when pressure testing body (2) and pressure testing cover (1) are located, pass for fastening screw (4); The ring groove at described pressure testing body (2) middle part is corresponding with the pilot hole that pressure testing puts setting, pressure testing body top periphery has the ring groove arranging O type circle (3), seals between overlapping to pressure testing body and pressure testing; The confined planes that ring groove upper surface, pressure testing body (2) middle part moves down as restriction pressure testing body; The lower end of described pressure testing body has round boss, for connecting pressure testing rubber pipeline (6), prevents coming off of rubber pipeline; The endoporus of pressure testing body is a unthreaded hole, and to overlap endoporus aperture, top identical with pressure testing, forms pressure testing intake tunnel; Described fastening screw (4) is a cross section is circular U-shaped structure, and U-shaped opening is identical with pressure testing cover (1) pilot hole centre distance.