A test piece release device and method for a vertical gas gun system

Abstract

The application belongs to the technical field of strength test, and particularly relates to a test piece releasing device and method for a vertical gas gun system. A barrel is vertically fixed on a support, the barrel mouth faces downward, and the bottom of the barrel is connected with a high-pressure gas source. A cartridge support is filled in the barrel, and the downward side of the cartridge support is provided with a mounting groove for accommodating a test piece. A combined support rod supports the test piece. A supporting device driving rod is driven to be radially extended by a control device, and the driving rod enters the barrel to support the cartridge support when the driving rod is extended. The test piece is mounted in the mounting groove, the test piece is pressed on the support rod by gravity, the support rod cannot be radially recovered, the support rod supports the test piece to keep the test piece in the mounting groove, there is a gap between the test piece and the groove bottom, the test piece is close to the groove bottom at the moment of launching, and the support rod is radially recovered under the action of a spring.

Description

Technical Field

[0001] This application belongs to the field of strength testing technology, and specifically relates to a test piece release device and method for a vertical air gun system. Background Technology

[0002] Some aircraft components need to be tested for their strength when dropped at high speed onto the ground or water. A device is needed to accelerate the test piece to a short distance for strength testing. Summary of the Invention

[0003] To address the aforementioned problems, a test piece release device for a vertical air cannon system includes:

[0004] The gun barrel is vertically fixed on the support with the muzzle facing down, and the top of the gun barrel is connected to the high-pressure gas source.

[0005] The sabot is loaded into the gun barrel and has a mounting slot for placing test specimens on the downward-facing side.

[0006] The combined support rod includes a cylinder, a spring, a support rod, and a plug. The cylinder is fixed at the mounting slot of the spring support. The support rod is installed inside the cylinder and can move horizontally. The end of the support rod has a boss for compressing the spring. The spring is sleeved on the support rod. The plug is threaded onto the cylinder. When the support rod moves to the right, the spring is compressed, causing the support rod to tend to retract.

[0007] Multiple support devices, evenly distributed on the outside of the gun barrel, include a fixed cylinder and an actuating rod.

[0008] The actuator is driven by a control device to extend and retract radially along the gun barrel. When the actuator extends, it enters the gun barrel to support the sabot.

[0009] Baffle: Installed at the edge of the gun barrel exit, it is used to prevent the sabot from remaining inside the gun barrel and separating it from the test piece, ensuring that the test piece flies out of the gun barrel exit;

[0010] The test piece is installed in the sabot mounting slot. Before installation, the support rod is manually moved a certain distance, which compresses the spring and gives the support rod the power to retract. Under the action of gravity, the test piece presses on the support rod, preventing the support rod from retracting radially. The support rod supports the test piece and keeps it in the mounting slot. There is a gap between the test piece and the bottom of the slot. At the moment of launch, the test piece is close to the bottom of the mounting slot, and the support rod retracts radially under the action of the spring.

[0011] Preferably, the sabot is made of foam material in one piece.

[0012] Preferably, the end face of the ejector is reinforced with a polyurethane ring to enhance its strength and end face stiffness.

[0013] Preferably, the support device is controlled by pneumatic, electromagnetic or hydraulic control.

[0014] Preferably, a cushioning material is installed on the inner edge of the barrel exit to cushion the impact load of the sabot and prevent the sabot from breaking.

[0015] A method for supporting and releasing a test specimen for a vertical air gun system, using the aforementioned test specimen release device for a vertical air gun system, includes the following steps:

[0016] Pre-launch support phase:

[0017] S1: Insert the test piece into the sabot mounting slot, pull out the support rod of the combined support rod, compress the spring so that the support rod tends to retract, and press the test piece onto the support rod. Under the action of the test piece's weight, the frictional force between the test piece and the support rod is greater than the spring's preload; at the same time, the support rod supports the test piece to prevent it from falling off; drive the support device to extend radially; place the sabot from the top of the gun barrel into the gun barrel, and use the support device for support.

[0018] Launch phase:

[0019] Compressed gas is introduced into the barrel, and the support device is simultaneously retracted.

[0020] As the sabot moves downward, the test piece remains in its original position and moves relative to the sabot. The support rod of the combined support rod automatically retracts under the action of the spring restoring force.

[0021] The sabot and the test piece fell vertically and accelerated together along the gun barrel axis;

[0022] The sabot stopped after impacting the buffer material and the baffle plate. The test piece detached from the sabot and continued to fly out of the gun barrel.

[0023] The advantages of this application include:

[0024] a) Before launch, the sabot and test piece are supported by a uniformly distributed support device, and gravity is used to maintain the support of the combined support rod on the test piece;

[0025] b) A certain gap is left in the vertical direction. At the moment of launch, the gap is used to create a time difference, so that the support rod automatically retracts under the action of the spring, ensuring that the support rod no longer constrains the test piece to move vertically downward.

[0026] c) Before launch, the spring is compressed and has a tendency to move outward along the radial direction. During launch, the vertical force of gravity is reduced, causing the support rod to retract and ensuring that the test piece separates smoothly from the sabot.

[0027] d) After firing, the sabot first impacts the cushioning material. The nylon in the sabot's cross-section increases its strength, ensuring that the sabot does not break. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of a test piece release device for a vertical air cannon system according to a preferred embodiment of this application;

[0029] Figure 2 This is an enlarged view of a preferred embodiment of the combined support rod of this application.

[0030] Figure 3 This is a schematic diagram of the release device before the test piece is launched.

[0031] Figure 4 This is a schematic diagram of the release device at the moment of launch of the test piece.

[0032] Figure 5 This is a schematic diagram of the release device after the test piece is launched. Detailed Implementation

[0033] To make the technical solution and advantages of this application clearer, the technical solution of this application will be described in a clearer and more complete manner below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some embodiments of this application, and are only used to explain this application, not to limit this application. It should be noted that, for ease of description, only the parts related to this application are shown in the accompanying drawings. Other related parts can be referred to the general design. In the absence of conflict, the embodiments and technical features in the embodiments of this application can be combined with each other to obtain new embodiments.

[0034] like Figures 1-2 As shown, this application provides a test piece release device for a vertical air gun system, comprising:

[0035] The gun barrel 2 is vertically fixed on the bracket with the muzzle facing down, and the top of the gun barrel 2 is connected to the high-pressure gas source.

[0036] The sabot 1 is filled into the gun barrel 2, and the downward-facing side has a mounting groove for placing test pieces;

[0037] The combined support rod 4 includes a cylinder 41, a spring 42, a support rod 43, and a plug 44. The cylinder 41 is fixed at the mounting groove of the spring support 1. The support rod 43 is installed inside the cylinder 41 and can move horizontally. The end of the support rod 43 has a boss for compressing the spring 42. The spring 42 is sleeved on the support rod 43. The plug 44 is threaded to the cylinder 41. When the support rod 43 moves to the right, the spring 42 is compressed, so that the support rod 43 has a tendency to retract.

[0038] Multiple support devices 5 are evenly distributed on the outside of the gun barrel 2, including a fixed cylinder and an actuating rod.

[0039] The actuator is driven by the control device to extend and retract radially along the gun barrel 2. When the actuator extends, it enters the gun barrel 2 to support the sabot 1.

[0040] Baffle 7: Installed at the edge of the barrel 2 exit, it is used to block the sabot 1 and keep it inside the barrel, separating it from the test piece, and ensuring that the test piece flies out of the barrel exit.

[0041] The test piece 3 is installed in the mounting slot of the sabot 1. Before installation, the support rod 43 is manually moved a certain distance, so that the spring 42 is compressed and the support rod 43 has the power to retract. Under the action of gravity, the test piece 3 presses on the support rod 43, so that the support rod 43 cannot retract radially. The support rod 43 supports the test piece 3 and keeps it in the mounting slot. There is a gap between the test piece 3 and the bottom of the slot. At the moment of launch, the test piece 3 is close to the bottom of the mounting slot, and the support rod 43 retracts radially under the action of the spring 42.

[0042] Preferably, the ejector 1 is integrally molded from foam material.

[0043] Preferably, the end face of the ejector 1 is reinforced with a polyurethane ring to enhance its strength and end face stiffness.

[0044] Preferably, the support device 5 is controlled by pneumatic, electromagnetic or hydraulic control.

[0045] Preferably, a buffer material is installed on the inner edge of the barrel 2 outlet to buffer the impact load of the sabot 1 and prevent the sabot from breaking.

[0046] A method for supporting and releasing a test specimen for a vertical air gun system, using the aforementioned test specimen release device for a vertical air gun system, includes the following steps:

[0047] Pre-launch support phase:

[0048] S1: Insert the test piece 3 into the mounting slot of the sabot 1, pull out the support rod 43 of the combined support rod 4, compress the spring 42 so that the support rod 43 has a tendency to retract, and at the same time press the test piece 3 onto the support rod 43. Under the action of the weight of the test piece 3, the friction between the test piece 3 and the support rod 43 is greater than the preload of the spring 42; at the same time, the support rod 43 supports the test piece 3 to prevent it from falling off; drive the support device 5 to extend radially; place the sabot 1 from the top of the gun barrel into the gun barrel 2, and use the support device 5 for support.

[0049] Launch phase:

[0050] Compressed gas is introduced into the barrel 2, and the support device 5 is driven to retract synchronously.

[0051] As the sabot 1 moves downward, the test piece 3 remains in its original position and moves upward relative to the sabot 1. The support rod 43 of the combined support rod 4 automatically retracts under the restoring force of the spring 42.

[0052] The sabot 1 and the test piece 3 fall vertically and accelerate together along the axis of the gun barrel 2;

[0053] After the sabot 1 hits the buffer material 6 and the baffle plate 7, it stops. The test piece 3 detaches from the sabot 1 and continues to fly, exiting from the gun barrel.

[0054] The advantages of this application include:

[0055] a) Before launch, the sabot and test piece are supported by a uniformly distributed support device, and gravity is used to maintain the support of the combined support rod on the test piece;

[0056] b) A certain gap is left in the vertical direction. At the moment of launch, the gap is used to create a time difference, so that the support rod automatically retracts under the action of the spring, ensuring that the support rod no longer constrains the test piece to move vertically downward.

[0057] c) Before launch, the spring is compressed and has a tendency to move outward along the radial direction. During launch, the vertical force of gravity is reduced, causing the support rod to retract and ensuring that the test piece separates smoothly from the sabot.

[0058] d) After firing, the sabot first impacts the cushioning material. The nylon in the sabot's cross-section increases its strength, ensuring that the sabot does not break.

[0059] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A test piece release device for a vertical air cannon system, characterized in that, include: The gun barrel (2) is vertically fixed on the support with the muzzle facing down, and the top of the gun barrel (2) is connected to the high-pressure gas source; The sabot (1) is filled into the gun barrel (2), and the downward side has a mounting groove for placing the test piece; The combined support rod (4) includes a cylinder (41), a spring (42), a support rod (43), and a plug (44). The cylinder (41) is fixed at the mounting slot of the spring support (1). The support rod (43) is installed inside the cylinder (41) and can move horizontally. The end of the support rod (43) has a boss for compressing the spring (42). The spring (42) is sleeved on the support rod (43). The plug (44) is threaded onto the cylinder (41). When the support rod (43) moves to the right, the spring (42) is compressed, so that the support rod (43) has a tendency to retract. Multiple support devices (5) are evenly distributed on the outside of the gun barrel (2), including a fixed cylinder and an actuating rod. The actuator is driven by the control device to extend and retract radially along the barrel (2). When the actuator extends, it enters the barrel (2) to support the sabot (1). Baffle (7): Installed at the edge of the barrel (2) exit to block the sabot (1) from being left inside the barrel and separated from the test piece, ensuring that the test piece flies out of the barrel exit; The test piece (3) is installed in the mounting slot of the sabot (1). Before installation, the support rod (43) is manually moved a certain distance so that the spring (42) is compressed and the support rod (43) has the power to retract. Under the action of gravity, the test piece (3) is pressed on the support rod (43), so that the support rod (43) cannot be radially retracted. The support rod (43) supports the test piece (3) and keeps it in the mounting slot. There is a gap between the test piece (3) and the bottom of the slot. The test piece (3) is close to the bottom of the mounting slot at the moment of launch. The support rod (43) is radially retracted under the action of the spring (42).

2. The test piece release device for a vertical air cannon system as described in claim 1, characterized in that, The sabot (1) is integrally molded from foam material.

3. The test piece release device for a vertical air cannon system as described in claim 1, characterized in that, The end face of the spring bar (1) is reinforced with a polyurethane ring to enhance its strength and end face stiffness.

4. The test piece release device for a vertical air cannon system as described in claim 1, characterized in that, The support device (5) is controlled by pneumatic, electromagnetic or hydraulic control.

5. The test piece release device for a vertical air cannon system as described in claim 1, characterized in that, The inner edge of the barrel (2) outlet is fitted with a buffer material to buffer the impact load of the sabot (1) to prevent the sabot from breaking.

6. A method for supporting and releasing a test specimen for a vertical air gun system, comprising using the test specimen release device for a vertical air gun system as described in any one of claims 1-5, characterized in that, Includes the following steps: Pre-launch support phase: S1: Insert the test piece (3) into the mounting slot of the sabot (1), pull out the support rod (43) of the combined support rod (4), compress the spring (42) so that the support rod (43) has a tendency to retract, and press the test piece (3) onto the support rod (43). Under the action of the weight of the test piece (3), the friction between the test piece (3) and the support rod (43) is greater than the preload of the spring (42); at the same time, the support rod (43) supports the test piece (3) so that it does not fall off; drive the support device (5) to extend radially; place the sabot (1) from the top of the gun barrel into the gun barrel (2) and support it with the support device (5); Launch phase: Compressed gas is introduced into the barrel (2), and the support device (5) is driven to retract synchronously. As the spring bar (1) moves down, the test piece (3) remains in its original position and moves relative to the spring bar (1). The support rod (43) of the combined support rod (4) automatically retracts under the restoring force of the spring (42). The sabot (1) and the test piece (3) fall vertically and accelerate together along the axis of the gun barrel (2); The sabot (1) stops after impacting the buffer material (6) and the baffle plate (7), and the test piece (3) detaches from the sabot (1) and continues to fly out of the gun barrel.

Images