Hydraulic tool for full-opening composite shell

Abstract

The invention relates to the technical field of shell water pressure testing tools, in particular to a full-opening composite shell water pressure tool. According to the technical scheme, the device comprises a shell, the outer side of the shell is in threaded connection with a baffle ring assembly, the outer side of the baffle ring assembly is provided with a plug assembly through a positioning threaded assembly, the plug assembly comprises an auxiliary plug frame, the baffle ring assembly comprises a baffle ring external frame, and a positioning hole arranged in a communicating state is formed between the auxiliary plug frame and the baffle ring external frame. The cylindrical surface sealing structure of the auxiliary plug frame and the baffle ring external frame is adopted to wrap the shell, the auxiliary plug frame and the baffle ring external frame are connected through threads, direct dismounting is facilitated, meanwhile, the strength and sealing performance of the shell are checked in the water pressure process, two cylindrical surfaces are adopted for sealing, the structure is reliable, and the sealing performance is good. The outer side is fixed through the auxiliary plug frame, deformation of the opening of the metal piece is prevented, the shell is machined and formed at a time, follow-up remachining is avoided, and working efficiency and product quality are improved.

Description

Technical Field

[0001] The invention relates to the technical field of shell water pressure testing tooling, and in particular to a fully-open composite shell water pressure tooling. Background Art

[0002] The fully open composite shell hydraulic tooling is a device used to manufacture and test composite shells, which is widely used in aerospace, shipbuilding, automotive industry, energy industry, sports equipment, scientific research and development, military and defense, etc. The composite shells in these scenarios need to be formed and tested in a high-pressure water environment to ensure their strength, durability and safety. The hydraulic tooling provides reliable testing conditions by simulating the actual use environment to ensure product quality and performance.

[0003] In the prior art, the shell hydraulic tooling first processes the threads into small-diameter threads for hydraulic testing, and then processes them into product dimensions later, which results in complicated procedures, low work efficiency, and the actual hydraulic process does not match the actual state of the product.

[0004] In the patent document with the publication number CN220120579U, a water pressure testing tool for a thin-walled large-opening structure nozzle shell is proposed. The testing tool consists of a front plugging cover assembly, a sealing ring, a pull rod, a sealing ring, a spring washer, a rear plugging cover and a rear pressure cover. Since the rear plugging cover radially seals the inner diameter of the small end of the nozzle shell, the rear plugging cover is pressed by the rear pressure cover. By tightening the rear pressure cover through 8 evenly distributed pull rods, the problem of being unable to place a sealing ring on a thin-walled nozzle and the inability of traditional front and rear plug sealing methods to complete the water pressure test of the thin-walled large-opening nozzle shell of this structure is solved.

[0005] When the above device is in use, an end face sealing structure is adopted. A sealing baffle is processed on each of the front and rear metal parts, and a sealing gasket is placed on the end face. Since the combustion chamber is generally a thin-walled metal part, there is pressure at the thread gap during the water pressure test, which causes the mouth of the metal part to become larger. Leakage will occur during the pressure holding stage during the water pressure test, resulting in the test being unable to proceed normally, resulting in product size deviations and scrapping in the later stage.

[0006] Therefore, the present application proposes a fully-open composite shell hydraulic tooling to solve the above-mentioned problems. Summary of the invention

[0007] The purpose of the present invention is to address the problem in the background technology that since the combustion chamber is generally a thin-walled metal part, there is pressure in the thread gap during the water pressure test, which causes the mouth of the metal part to become larger, and leakage will occur during the pressure holding stage during the water pressure test, resulting in the test cannot be carried out normally. A fully-open composite shell water pressure tooling is proposed.

[0008] The technical solution of the present invention is: a fully open composite material shell hydraulic tooling, comprising a shell, the outer side of the shell is threadedly connected with a retaining ring assembly, and the outer side of the retaining ring assembly is installed with a plug assembly through a positioning thread assembly; The plug assembly includes an auxiliary plug frame, and the retaining ring assembly includes an external retaining ring frame. A positioning hole is provided between the auxiliary plug frame and the external retaining ring frame in a connected state. The positioning hole is composed of a friction layer, a threaded layer, a positioning layer and a hollow layer from the auxiliary plug frame to the external retaining ring frame. The auxiliary plug frame and the external retaining ring frame are arranged in a threaded connection state through a positioning thread assembly.

[0009] Optionally, a water inlet is provided inside the auxiliary plug frame, and the water inlet is connected to the shell.

[0010] Optionally, the positioning thread assembly includes a thick threaded rod threadedly connected to the inside of the positioning hole through a threaded layer, a hollow airbag block is inserted into the inside of the friction layer, a corresponding limiting ring is slidably installed on the outer side of the thick threaded rod, a corresponding spring is fixedly installed on the top of the corresponding limiting ring, and an inclined slider is fixedly installed on the top of the corresponding spring.

[0011] Optionally, a positioning nut is installed on the outer thread of the clamping positioning rod, and the positioning nut is fitted on the top of the inclined sliding block.

[0012] Optionally, the retaining ring assembly also includes multiple groups of auxiliary guide blocks fixedly installed on the positioning layer, a thin threaded rod is fixedly installed on the bottom of the thick threaded rod, a hollow sleeve rod is rotatably installed on the outer side of the thin threaded rod, and a plurality of corresponding limit blocks are fixedly installed on the outer side of the hollow sleeve rod, and the plurality of corresponding limit blocks are arranged in a ring state with respect to the surface of the hollow sleeve rod, and the corresponding limit blocks are slidably installed inside the auxiliary guide blocks.

[0013] Optionally, the thin-head threaded rod passes through one side of the hollow sleeve and is threadedly connected to an internal threaded sleeve, the outer side of the hollow sleeve is hinged with a two-way hinged rod, the outer side of the internal threaded sleeve is hinged with an auxiliary hinged rod, and the auxiliary hinged rod is hinged to the outer side of the two-way hinged rod.

[0014] Optionally, the auxiliary hinged rod is hinged with an arc-shaped push plate on one side away from the bidirectional hinged rod, and a slide positioning block is fixedly installed on the side of the arc-shaped push plate facing the bidirectional hinged rod. A clamping positioning rod is fixedly installed on one side of the bidirectional hinged rod, and the clamping positioning rod is slidably installed inside the slide positioning block.

[0015] Optionally, the sealing ring assembly includes a first sealing ring inserted at the connection between the shell and the retaining ring assembly, the first sealing ring and the arc-shaped push plate are arranged in a fit state, a sliding channel plug block is fixedly installed on the outside of the shell, and a plurality of sealing push blocks are slidably installed inside the sliding channel plug block, a second sealing ring is inserted at the connection between the shell and the retaining ring assembly, and the plurality of sealing push blocks are fit between the second sealing ring and the first sealing ring.

[0016] In summary, the present application includes at least one of the following beneficial technical effects: 1. The cylindrical sealing structure of the auxiliary plug frame and the retaining ring external frame is adopted to wrap the shell. The auxiliary plug frame and the retaining ring external frame are connected by threads, which is convenient for direct removal. At the same time, the shell strength and sealing performance are evaluated during the water pressure process. Two cylindrical seals are adopted, the structure is reliable, and the outer side is fixed by the auxiliary plug frame to prevent the metal part from deforming. The shell is formed in one process, avoiding subsequent reprocessing, and improving work efficiency and product quality. 2. The positioning nut presses the inclined slider and moves it downward to the inside of the hollow airbag block. The upper part of the inclined slider generates an outward thrust on the hollow airbag block, causing the hollow airbag block to fit closely to the surface of the friction layer, increasing the friction between the two, so that the top of the thick-headed threaded rod is subjected to a sufficient clamping force, stabilizing the connection between the retaining ring assembly and the plug assembly, and avoiding deformation of the top of the tooling; 3. The bidirectional hinged rod moves outward along the deflection direction of the auxiliary hinged rod, and the arc push plate moves upward along the clamping positioning rod through the slide positioning block, and the arc push plate moves outward, and the arc push plate squeezes the sealing ring assembly, squeezes the connection between the shell and the retaining ring assembly, and then forms a sufficient positioning for the auxiliary plug frame, the shell and the retaining ring external frame, further reducing the deformation of the shell and ensuring the sealing of the tooling; 4. If leakage occurs during pressure testing inside the tooling, the second sealing ring will move outward under pressure, and the second sealing ring will transmit the pressure to the first sealing ring through the sealing push block. The first sealing ring will remain in place due to the positioning of the arc-shaped push plate, providing a certain amount of time for the staff to urgently handle the pressure test according to the data of the pressure sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic structural diagram of a fully open shell hydraulic tooling of the present invention is given; Figure 2 It is a schematic structural diagram of a thick-head threaded rod of the present invention; Figure 3 It is a schematic structural diagram of the hollow airbag block of the present invention; Figure 4 It is a structural schematic diagram of the auxiliary hinged rod of the present invention; Figure 5 for Figure 4 Enlarged view of the middle A area; Figure 6 for Figure 4 Enlarged view of the middle B area; Figure 7 for Figure 4 Enlarged view of the middle C area; Figure 8 It is a schematic structural diagram of the sealing ring assembly of the present invention.

[0018] 1. Shell; 2. Plug assembly; 201. Auxiliary plug frame; 202. Water inlet; 3. Retaining ring assembly; 301. External retaining ring frame; 302. Auxiliary guide block; 4. Positioning thread assembly; 401. Thick-headed threaded rod; 402. Positioning nut; 403. Hollow airbag block; 404. Clamping positioning rod; 405. Hollow sleeve rod; 406. Bidirectional hinged rod; 407. Thin-headed threaded rod; 408. Built-in threaded sleeve; 409. Arc push plate; 410. Corresponding limiting sleeve ring; 411. Auxiliary hinged rod; 412. Corresponding spring; 413. Inclined slider; 414. Corresponding limiting block; 415. Slideway positioning block; 5. Sealing ring assembly; 501. First sealing ring; 502. Second sealing ring; 503. Slideway insert block; 504. Sealing push block. DETAILED DESCRIPTION

[0019] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0020] like Figure 1 As shown, a fully open composite shell hydraulic tooling includes a shell 1, a retaining ring assembly 3 is threadedly connected to the outer side of the shell 1, and a plug assembly 2 is installed on the outer side of the retaining ring assembly 3 through a positioning thread assembly 4. During the operation of the fully open composite shell, various components are connected through threads, and sealing putty is applied at the connection. During the actual operation, almost no gas enters the inside of the thread, so there is no need to consider the deformation of the mouth; The plug assembly 2 includes an auxiliary plug frame 201, and the retaining ring assembly 3 includes a retaining ring external frame 301. A positioning hole arranged in a connected state is opened between the auxiliary plug frame 201 and the retaining ring external frame 301. The composition of the positioning hole is respectively shown as a friction layer, a threaded layer, a positioning layer and a hollow layer from the auxiliary plug frame 201 to the retaining ring external frame 301. The auxiliary plug frame 201 and the retaining ring external frame 301 are arranged in a threaded connection state through a positioning thread assembly 4. A sealing ring assembly 5 is installed at the connection between the housing 1 and the retaining ring assembly 3. Figure 1As shown, the technical solution adopts two cylindrical seals, which are composed of a plug assembly 2, a retaining ring assembly 3 and a sealing ring assembly 5. Since the pressure difference between the inside and outside of the metal part thread is balanced, it will not cause the problem of metal part expansion. In addition, the sealing structure adopts two cylindrical seals, which is more reliable. The leakage can be reduced during the water pressure process. The test process is consistent with the use status of the product, and the performance of the product can be fully verified. At the same time, the cylindrical sealing structure of the auxiliary plug frame 201 and the retaining ring external frame 301 is adopted to wrap the shell 1, wherein the auxiliary plug frame 201 and the retaining ring external frame 301 are connected by threads, which is convenient for direct removal. At the same time, the shell strength and sealing performance are evaluated during the water pressure process. Two cylindrical seals are adopted, which are reliable in structure. The outside is fixed by the auxiliary plug frame 201, which prevents the metal part mouth from deforming, so that the shell is processed and formed at one time, avoiding subsequent reprocessing, and improving work efficiency and product quality. It is explained here that the diameter of the friction layer is larger than the diameter of the thread layer, and the diameter of the thread layer is consistent with the diameter of the positioning layer. The diameter of the positioning layer is smaller than the diameter of the hollow layer, and the hollow layer is located at the plane where the sealing ring assembly 5 is located.

[0021] like Figure 2-Figure 5As shown, the auxiliary plug frame 201 is provided with a water inlet 202 inside, and the water inlet 202 is connected to the shell 1. The water inlet 202 is used to input water into the shell. The positioning thread assembly 4 includes a thick threaded rod 401 threadedly connected to the inside of the positioning hole through a threaded layer, a hollow airbag block 403 is inserted into the friction layer, and a corresponding limiting collar 410 is slidably installed on the outer side of the thick threaded rod 401, and a corresponding spring 412 is fixedly installed on the top of the corresponding limiting collar 410, and the top of the corresponding spring 412 is fixed The inclined slider 413 is installed, and the outer thread of the clamping positioning rod 404 is installed with a positioning nut 402, and the positioning nut 402 fits on the top of the inclined slider 413. When in use, the hollow airbag block 403 is first inserted into the friction layer, and the threaded surface of the thick head threaded rod 401 is positioned along the threaded layer and the positioning hole, and the corresponding limiting collar 410 slides downward along the outer side of the clamping positioning rod 404, so that the corresponding limiting collar 410 and the hollow airbag block 403 fall to the top of the threaded layer, and the lower semi-arc portion of the inclined slider 413 is The diameter of the hollow airbag block 403 is smaller than the normal diameter of the hollow airbag block 403, while the diameter of the upper part of the hollow airbag block 403 is larger than the normal diameter of the hollow airbag block 403, then the lower arc-shaped part of the tilting slider 413 is first inserted into the hollow airbag block 403 in the normal state, and the positioning nut 402 is first rotated and moved downward along the thick threaded rod 401 through the thread guide of the thick threaded rod 401, then the positioning nut 402 presses the tilting slider 413 and moves downward to the inside of the hollow airbag block 403, and the tilting slider 413 is pressed between the corresponding spring 412 and the The corresponding limiting collar 410 moves down to a fixed position, and the upper part of the inclined slider 413 generates an outward thrust on the hollow airbag block 403, causing the hollow airbag block 403 to fit tightly against the surface of the friction layer, increasing the friction between the two, and the clamping positioning rod 404, the inclined slider 413, the hollow airbag block 403 and the friction layer become a whole, so that when the tooling is working, the top of the thick threaded rod 401 is subjected to a sufficient clamping force, thereby stabilizing the connection between the retaining ring assembly 3 and the plug assembly 2 and avoiding deformation above the tooling.

[0022] like Figure 2-Figure 7As shown, the retaining ring assembly 3 also includes multiple groups of auxiliary guide blocks 302 fixedly installed in the positioning layer, a thin threaded rod 407 is fixedly installed at the bottom of the thick threaded rod 401, a hollow sleeve rod 405 is rotatably installed on the outer side of the thin threaded rod 407, and a plurality of corresponding limit blocks 414 are fixedly installed on the outer side of the hollow sleeve rod 405, and the plurality of corresponding limit blocks 414 are arranged in a ring state with respect to the surface of the hollow sleeve rod 405, and the corresponding limit blocks 414 are slidably installed in the interior of the auxiliary guide block 302, and when the thin threaded rod 407 preferentially passes through the threaded layer and enters the positioning layer, the corresponding limit blocks 414 on the side of the hollow sleeve rod 405 are preferentially inserted into the auxiliary guide block 302 406 is hinged on the outer side of the inner sleeve 408, and the auxiliary hinged rod 411 is hinged on the outer side of the inner sleeve 408. An arc push plate 409 is hinged to one side of the hinged rod 406, and a slideway positioning block 415 is fixedly installed on the arc push plate 409 toward one side of the bidirectional hinged rod 406. A clamping positioning rod 404 is fixedly installed on one side of the bidirectional hinged rod 406, and the clamping positioning rod 404 is slidably installed inside the slideway positioning block 415. When the fine threaded rod 407 enters the hollow layer, the corresponding limit block 414 has been inserted into the auxiliary guide block 302, and the thick threaded rod 401 drives the fine threaded rod 407 to rotate. Since the built-in threaded sleeve 408 maintains a unified motion state through the limit of the bidirectional hinged rod 406 and the auxiliary hinged rod 411, as the fine threaded rod 407 enters the hollow layer, the corresponding limit block 414 has been inserted into the auxiliary guide block 302, and the thick threaded rod 401 drives the fine threaded rod 407 to rotate. The head threaded rod 407 rotates, and the built-in threaded sleeve 408 moves downward along the thread of the thin head threaded rod 407, and the thin head threaded rod 407 drives the auxiliary hinge rod 411 to deflect outward, and the two-way hinge rod 406 moves outward along the deflection direction of the auxiliary hinge rod 411, and the arc push plate 409 moves upward along the clamping positioning rod 404 through the slide positioning block 415, and the arc push plate 409 moves outward, and the arc push plate 409 squeezes the sealing ring assembly 5, squeezes the connection between the shell 1 and the retaining ring assembly 3, and then forms a sufficient positioning for the auxiliary plug frame 201, the shell 1 and the retaining ring external frame 301, further reduces the deformation of the shell, and ensures the sealing of the tooling; The arc push plate 409 does not contact the friction layer, the thread layer, and the positioning layer when sliding along the friction layer, the thread layer, and the positioning layer in a normal state, and the corresponding limiting block 414 does not contact the friction layer, the thread layer, and the positioning layer.

[0023] When it is necessary to remove the shell 1 and the plug assembly 2, first rotate the positioning nut 402 outward from the thick threaded rod 401. At this time, the inclined slider 413 moves outward through the corresponding spring 412. At this time, the hollow airbag block 403 can be taken out from the friction layer, and then the thick threaded rod 401 is rotated, and the thin threaded rod 407 rotates with the thick threaded rod 401. The thin threaded rod 407 converges the multiple arc-shaped push plates 409 from here through the built-in threaded sleeve 408, and the thin threaded rod 407 and the thick threaded rod 401 continue to rotate and move out from the positioning hole. At this time, the shell 1 and the plug assembly 2 can be removed.

[0024] In this embodiment, Figure 7-Figure 8 As shown, the sealing ring assembly 5 includes a first sealing ring 501 inserted at the connection between the shell 1 and the retaining ring assembly 3, the first sealing ring 501 and the arc-shaped push plate 409 are arranged in a fitted state, a sliding cavity channel plug block 503 is fixedly installed on the outer side of the shell 1, and a plurality of sealing push blocks 504 are slidably installed inside the sliding cavity channel plug block 503, a second sealing ring 502 is inserted at the connection between the shell 1 and the retaining ring assembly 3, and a plurality of sealing push blocks 504 are fitted between the second sealing ring 502 and the first sealing ring 501, and the first sealing ring 501 is supported by the arc-shaped push plate 409. The push plate 409 is pushed in full fit between the shell 1 and the retaining ring external frame 301, and the sealing push block 504 is pressed between the second sealing ring 502 and the first sealing ring 501. If leakage occurs during the pressure test inside the tooling, the second sealing ring 502 moves outward under the pressure, and the second sealing ring 502 transmits the pressure to the first sealing ring 501 through the sealing push block 504. The first sealing ring 501 remains in place due to the positioning of the arc-shaped push plate 409, thereby providing a certain amount of time for the staff to urgently handle the pressure test according to the data of the pressure sensor.

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0026] The above specific embodiments are only several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A fully open composite shell hydraulic tooling, comprising a shell (1), characterized in that: The outer side of the housing (1) is threadedly connected to a retaining ring assembly (3), and the outer side of the retaining ring assembly (3) is mounted with a plug assembly (2) via a positioning thread assembly (4); The plug assembly (2) comprises an auxiliary plug frame (201), and the retaining ring assembly (3) comprises a retaining ring external frame (301). A positioning hole is provided between the auxiliary plug frame (201) and the retaining ring external frame (301) and is arranged in a connected state. The positioning hole is composed of a friction layer, a thread layer, a positioning layer and a hollow layer in a direction from the auxiliary plug frame (201) to the retaining ring external frame (301). The auxiliary plug frame (201) and the retaining ring external frame (301) are arranged in a threaded connection state via a positioning thread assembly (4). A sealing ring assembly (5) is installed at the connection between the housing (1) and the retaining ring assembly (3).

2. A fully open composite shell hydraulic tooling according to claim 1, characterized in that: A water inlet (202) is provided inside the auxiliary plug frame (201), and the water inlet (202) is connected to the housing (1).

3. The fully open composite shell hydraulic tooling according to claim 1, characterized in that: The positioning thread assembly (4) comprises a thick threaded rod (401) threadedly connected to the inside of the positioning hole through a threaded layer, a hollow airbag block (403) is inserted into the inside of the friction layer, a corresponding limiting collar (410) is slidably mounted on the outside of the thick threaded rod (401), a corresponding spring (412) is fixedly mounted on the top of the corresponding limiting collar (410), and an inclined slider (413) is fixedly mounted on the top of the corresponding spring (412).

4. The fully open composite shell hydraulic tooling according to claim 3, characterized in that: A positioning nut (402) is threadedly mounted on the outer side of the clamping positioning rod (404), and the positioning nut (402) is fitted on the top of the inclined sliding block (413).

5. The fully open composite shell hydraulic tooling according to claim 4, characterized in that: The retaining ring assembly (3) further comprises a plurality of groups of auxiliary guide blocks (302) fixedly mounted on the positioning layer; a thin threaded rod (407) is fixedly mounted on the bottom of the thick threaded rod (401); a hollow sleeve rod (405) is rotatably mounted on the outer side of the thin threaded rod (407); a plurality of corresponding limit blocks (414) are fixedly mounted on the outer side of the hollow sleeve rod (405); the plurality of corresponding limit blocks (414) are arranged in an annular state with respect to the surface of the hollow sleeve rod (405); and the corresponding limit blocks (414) are slidably mounted inside the auxiliary guide blocks (302).

6. A fully open composite shell hydraulic tooling according to claim 5, characterized in that: The thin-head threaded rod (407) passes through one side of the hollow sleeve rod (405) and is threadedly connected to an internal threaded sleeve (408); a bidirectional hinged rod (406) is hinged on the outer side of the hollow sleeve rod (405); an auxiliary hinged rod (411) is hinged on the outer side of the internal threaded sleeve (408); and the auxiliary hinged rod (411) is hinged on the outer side of the bidirectional hinged rod (406).

7. A fully open composite shell hydraulic tooling according to claim 6, characterized in that: A curved push plate (409) is hingedly connected to one side of the auxiliary hinged rod (411) away from the bidirectional hinged rod (406).

8. The fully open composite shell hydraulic tooling according to claim 7, characterized in that: A slideway positioning block (415) is fixedly mounted on one side of the arc-shaped push plate (409) facing the bidirectional hinged rod (406), and a clamping positioning rod (404) is fixedly mounted on one side of the bidirectional hinged rod (406), and the clamping positioning rod (404) is slidably mounted inside the slideway positioning block (415).

9. A fully open composite shell hydraulic tooling according to claim 8, characterized in that: The sealing ring assembly (5) comprises a first sealing ring (501) inserted at the connection between the housing (1) and the retaining ring assembly (3), and the first sealing ring (501) and the arc-shaped push plate (409) are arranged in a fitted state.

10. A fully open composite shell hydraulic tooling according to claim 9, characterized in that: A sliding channel insert block (503) is fixedly mounted on the outer side of the housing (1), a plurality of sealing push blocks (504) are slidably mounted inside the sliding channel insert block (503), a second sealing ring (502) is inserted at the connection between the housing (1) and the retaining ring assembly (3), and the plurality of sealing push blocks (504) are fitted between the second sealing ring (502) and the first sealing ring (501).

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