Limiting tool for sealing test of gun recoiling machine

Abstract

The utility model provides a limiting tool for a sealing test of an artillery counter-recoil machine, which is applied to the technical field of artillery counter-recoil machines, and is characterized by comprising a double-end thread sleeve of which one end is detachably connected with a cylinder barrel, a limiting block arranged on the double-end thread sleeve, and a lantern ring which is detachably connected with the double-end thread sleeve and the limiting block, an ejector rod used for abutting against the piston is adjustably arranged on the limiting block. The double-end thread sleeve has the technical effects that the first thread section is in meshed connection with the first internal thread, the limiting tool is mounted on the cylinder barrel, the second internal thread on the lantern ring can be in meshed connection with the second thread section and the third thread, and then the double-end thread sleeve, the limiting block and the lantern ring are combined into a whole; by adjusting the ejector rod, the ejector rod abuts against the piston, and then the piston is limited; the piston is prevented from directly rushing out of the cylinder barrel after the cylinder barrel is filled with air or liquid; and subsequent normal sealing test is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of artillery recoil mechanism technology, and in particular to a limiting tool for sealing tests of artillery recoil mechanisms. Background Technology

[0002] The recoil mechanism is an important component of the recoil system of artillery. Its function is to store energy during recoil and release energy to push the gun back to its original position after recoiling to the end. Currently, the mainstream recoil mechanisms include pneumatic recoil mechanisms, hydraulic recoil mechanisms, spring recoil mechanisms, and composite recoil mechanisms that combine the above types of recoil mechanisms.

[0003] Please refer to Figure 1 One type of artillery recoil mechanism is a pneumatic and liquid composite recoil mechanism. Its tail end includes a cylinder 11, a detection valve 12 and an indicator rod 13 installed in the cylinder 11, and a piston 14 that slides back and forth in the cylinder 11. The tail end of the cylinder 11 is provided with a first internal thread 15 that is fixedly connected to the artillery. After the recoil mechanism of this type of artillery is disassembled and repaired, in order to check its technical performance and ensure its technical quality, a sealing test needs to be performed on the recoil mechanism. However, after the recoil mechanism is removed from the artillery, since there is no obstruction at the tail end of the cylinder 11, the piston 14 can easily be directly pushed out of the cylinder 11 after the cylinder 11 is filled with air or liquid, thus making it impossible to perform a sealing test. Utility Model Content

[0004] The purpose of this invention is to provide a limiting tool for sealing tests of artillery recoil mechanisms. Its advantage is that it can be installed at the tail end of a certain type of artillery recoil mechanism to limit the piston, thereby solving the problem of difficulty in conducting sealing tests.

[0005] To achieve the above and other related objectives, this utility model provides the following technical solution:

[0006] A limiting tool for sealing tests of artillery recoil mechanism includes a double-ended threaded sleeve with one end detachably connected to the cylinder, a limiting block mounted on the double-ended threaded sleeve, and a collar detachably connected to the double-ended threaded sleeve and the limiting block.

[0007] The limiting block is adjustablely equipped with a push rod for abutting the piston.

[0008] In one embodiment of the present invention, the double-ended threaded sleeve includes a sleeve, a first threaded segment disposed on the outer circumference of one end of the sleeve, and a second threaded segment disposed on the outer circumference of the other end of the sleeve, wherein the first threaded segment is engaged with a first internal thread.

[0009] In one embodiment of the present invention, a mounting groove is provided on the sleeve located on one side of the second threaded section;

[0010] The limiting block is installed in the mounting groove, and an avoidance hole is provided between the limiting block and the double-ended threaded sleeve for detecting the passage of the valve and the indicator rod.

[0011] In one embodiment of this utility model, the diameter of the limiting block is the same as the outer diameter of the double-ended threaded sleeve;

[0012] The outer circumference of the limiting block is provided with a third thread that complements the notch on the second threaded section.

[0013] In one embodiment of the present invention, the collar includes a connecting cylinder and a retaining ring integrally formed at one end of the connecting cylinder;

[0014] The inner wall of the connecting cylinder is provided with a second internal thread that meshes with the second threaded section and the third thread.

[0015] The width of the retaining ring is equal to the wall thickness of the double-ended threaded sleeve.

[0016] In one embodiment of this utility model, the top rod is a screw rod, and the limiting block has a threaded hole in the middle that is threadedly connected to the screw rod.

[0017] In one embodiment of this utility model, a nut is fixedly provided at one end of the top rod.

[0018] As described above, the limiting tool of this utility model for sealing tests of artillery recoil mechanisms has the following beneficial effects:

[0019] 1. The first threaded section engages with the first internal thread, and the limiting tool is installed on the cylinder. The limiting block is installed in the mounting groove, and a third thread complementary to the notch on the second threaded section is provided on the outer circumference of the limiting block, so that the second internal thread on the collar can engage with the second threaded section and the third thread, thereby assembling the double-ended threaded sleeve, the limiting block and the collar into a whole. By adjusting the push rod, the push rod abuts against the piston, thereby limiting the piston. This prevents the piston from being directly ejected from the cylinder after the cylinder is filled with air or liquid, and facilitates subsequent normal sealing tests.

[0020] 2. After the limit tool has been tested, the recoiling machine can be installed as a whole without depressurization, and then the limit tool can be disassembled. This eliminates the need for repressurization after depressurization and installation, thus improving the timeliness of maintenance and support.

[0021] 3. This tool is small and lightweight, cleverly combined, easy to operate, safe and reliable, and highly practical. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the recoil mechanism removed from the artillery in the background art of this utility model;

[0023] Figure 2This is a schematic diagram of the structure of the limiting tool installed on the reciprocating machine according to an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the overall structure of the limiting tool according to an embodiment of the present utility model;

[0025] Figure 4 This is a cross-sectional view of the overall structure of the limiting tool according to an embodiment of the present utility model;

[0026] Figure 5 This is an exploded view of the overall structure of the limiting tool according to an embodiment of the present invention.

[0027] Reference numerals: 11. Cylinder; 12. Detection valve; 13. Indicator rod; 14. Piston; 15. First internal thread; 2. Double-ended threaded sleeve; 21. Sleeve sleeve; 22. First threaded section; 23. Second threaded section; 24. Mounting groove; 3. Limiting block; 31. Main plate; 32. Sub-plate; 33. Clearance hole; 34. Third thread; 4. Collar; 41. Connecting cylinder; 42. Retaining ring; 43. Second internal thread; 5. Push rod; 51. Nut. Detailed Implementation

[0028] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0029] Please see Figures 1 to 5 It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the disclosed technical content. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0030] Please see Figures 1 to 5 This utility model provides a limiting tool for sealing tests of artillery recoil mechanism, including a double-ended threaded sleeve 2 detachably connected to a cylinder 11 at one end, a limiting block 3 installed on the double-ended threaded sleeve 2, and a collar 4 detachably connected to the double-ended threaded sleeve 2 and the limiting block 3. The limiting block 3 is adjustablely provided with a push rod 5 for abutting the piston.

[0031] The double-ended threaded sleeve 2 includes a sleeve, a first threaded section 22 and a second threaded section 23. The first threaded section 22 is disposed on the outer circumference of one end of the sleeve, and the second threaded section 23 is disposed on the outer circumference of the other end of the sleeve. The first threaded section 22 is engaged with the first internal thread 15 to achieve a fixed connection between the double-ended threaded sleeve 2 and the cylinder 11.

[0032] In this embodiment, four mounting grooves 24 are provided on the sleeve 21 located on one side of the second threaded section 23; the limiting block 3 includes a main plate 31 and four sub-plates 32 integrally formed around the main plate 31. The four sub-plates 32 are respectively installed in the mounting grooves 24. An avoidance hole 33 is provided between the sub-plates 32 and the double-ended threaded sleeve 2 for detecting the passage of the valve 12 and the indicator rod 13, so that the re-entry machine does not affect other tests and inspections of the re-entry machine when the sealing test is performed; a threaded hole is opened in the middle of the main plate 31. In this embodiment, the push rod 5 is a screw rod, which is threadedly connected to the threaded hole. By turning the screw rod, the screw rod abuts against the piston 14, thereby limiting the piston 14; this prevents the piston 14 from being directly pushed out of the cylinder 11 after the cylinder 11 is filled with air or liquid, which facilitates the subsequent normal sealing test; a nut 51 is welded and fixed to one end of the push rod 5 away from the piston 14; this makes it easy to tighten the push rod 5 by clamping the nut 51 with a wrench.

[0033] The limiting block 3 is circular in shape, and its diameter is the same as the outer diameter of the double-ended threaded sleeve 2. A third thread 34 is provided on the outer circumference of the limiting block 3, which is complementary to the notch on the second threaded section 23.

[0034] The collar 4 includes a connecting cylinder 41 and a retaining ring 42 integrally formed at one end of the connecting cylinder 41. The inner diameter of the connecting cylinder 41 is equal to the outer diameter of the double-ended threaded sleeve 2. The inner wall of the connecting cylinder 41 is provided with a second internal thread 43 that meshes with the second threaded section 23 and the third thread 34, thereby fixing the double-ended threaded sleeve 2, the limiting block 3 and the collar 4 together to form a whole. The width of the retaining ring 42 is equal to the thickness of the cylinder wall of the double-ended threaded sleeve 2.

[0035] Brief description of the operation process: During operation, screw the unnotched end of the double-ended threaded sleeve 2 onto the cylinder 11 at the tail end of the recoiling machine; then place the four sub-plates 32 of the limiting block 3 into the four mounting slots 24 on the double-ended threaded sleeve 2, avoiding the detection valve 12, indicator rod 13 and other parts at the tail end of the recoiling machine. After the limiting block 3 abuts against the bottom of the piston 14, screw on the collar 4 and fix the collar, limiting block 3 and double-ended threaded sleeve 2 together; finally, screw and adjust the push rod 5 so that the push rod 5 abuts against the piston 14. At this time, gas and liquid can be injected into the recoiling machine to conduct a high-pressure sealing test.

[0036] In summary, the first threaded segment 22 of this invention engages with the first internal thread 15, the limiting tool is installed on the cylinder 11, and the second internal thread 43 on the collar 4 can engage with the second threaded segment and the third thread 34, thereby assembling the double-ended threaded sleeve 2, the limiting block 3, and the collar 4 into a whole. By adjusting the push rod 5, the push rod 5 abuts against the piston 14, thereby limiting the piston 14. This prevents the piston 14 from easily being ejected directly from the cylinder 11 after it is filled with air or liquid, and facilitates subsequent normal sealing tests. Therefore, this invention effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0037] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A limiting tool for sealing tests of artillery recoil mechanisms, characterized in that: It includes a double-ended threaded sleeve (2) that is detachably connected to the cylinder (11) at one end, a limiting block (3) installed on the double-ended threaded sleeve (2), and a collar (4) that is detachably connected to the double-ended threaded sleeve (2) and the limiting block (3); The limiting block (3) is adjustablely provided with a push rod (5) for abutting the piston (14).

2. The limiting tool for sealing tests of artillery recoil mechanisms according to claim 1, characterized in that: The double-ended threaded sleeve (2) includes a sleeve (21), a first threaded section (22) disposed on the outer circumference of one end of the sleeve (21), and a second threaded section (23) disposed on the outer circumference of the other end of the sleeve (21). The first threaded section (22) is engaged with the first internal thread (15).

3. A limiting tool for sealing tests of artillery recoil mechanisms according to claim 2, characterized in that: A mounting groove (24) is provided on the sleeve (21) located on one side of the second threaded section (23); The limiting block (3) is installed in the mounting groove (24), and a clearance hole (33) is provided between the limiting block (3) and the double-ended threaded sleeve (2) for detecting the passage of the valve (12) and the indicator rod (13).

4. A limiting tool for sealing tests of artillery recoil mechanisms according to claim 3, characterized in that: The diameter of the limiting block (3) is the same as the outer diameter of the double-ended threaded sleeve (2); The limiting block (3) has a third thread (34) on its outer circumference that complements the notch on the second threaded section (23).

5. A limiting tool for sealing tests of artillery recoil mechanisms according to claim 1, characterized in that: The collar (4) includes a connecting cylinder (41) and a retaining ring (42) integrally formed at one end of the connecting cylinder (41); The inner wall of the connecting cylinder (41) is provided with a second internal thread (43) that meshes with the second threaded section (23) and the third thread (34); The width of the retaining ring (42) is equal to the wall thickness of the double-ended threaded sleeve (2).

6. A limiting tool for sealing tests of artillery recoil mechanisms according to claim 1, characterized in that: The top rod (5) is a screw rod, and the limiting block (3) has a threaded hole in the middle that is threaded to the screw rod.

7. A limiting tool for sealing tests of artillery recoil mechanisms according to claim 6, characterized in that: A nut (51) is fixedly installed at one end of the top rod (5).

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