A device for testing firing energy of a firing mechanism

Abstract

The present invention relates to a device for testing the firing energy of a firing mechanism, belonging to the field of weapon testing technology. The device comprises a firing energy strain device, a firing energy calibration device, and a data acquisition and analysis device. The firing energy strain device comprises a strain test spring with a charge-type strain gauge fixedly mounted on its lower surface, and a firing pin for striking the strain test spring, with the strain test spring mounted on a strain test seat. The firing energy calibration device comprises a calibration test spring with a charge-type strain gauge fixedly mounted on its lower surface, and a calibration hammer for striking the calibration test spring, with the calibration test spring mounted on the strain calibration seat. The data acquisition and analysis device comprises a data acquisition device and a strain value display terminal connected via a data cable, with the data acquisition device also being connected to the charge-type strain gauge. The present invention can solve the problem of being unable to measure the firing energy when the firing pin strikes the primer. The device can reliably and accurately test the firing energy of the firing mechanism, facilitating further optimization of the design of firearms.

Description

Technical Field

[0001] The invention relates to a device for testing the firing energy of a firing mechanism, belonging to the technical field of weapon testing. Background Art

[0002] In existing domestic firearms and similar equipment, the firing mechanism typically utilizes a mechanical trigger, using mechanical impact to transfer energy to the primer, igniting it. The firing mechanism stores energy while the trigger is released, driving the hammer to strike the crankshaft, which in turn drives the firing pin to strike the primer, completing the firing. Once the firing is complete, the return spring retracts the firing pin, ready for the next shot. To ensure reliable firing, the energy of the firing pin striking the primer must be greater than the energy required to ignite the primer. Calculation of firing energy is usually theoretical, and there is currently no accurate and effective method for testing the firing mechanism's firing energy. Summary of the Invention

[0003] The purpose of the present invention is to provide a testing device for firing energy.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A firing energy testing device includes a firing energy strain device, a firing energy calibration device, and a data acquisition and analysis device; the firing energy strain device includes a strain test spring with a charge type strain gauge fixed on its lower surface and a firing pin for striking the strain test spring, and the strain test spring is installed on a strain test seat; the firing energy calibration device includes a charge type strain gauge fixed on its lower surface

[0006] The calibration test shrapnel and the calibration hammer for hitting the calibration test shrapnel are installed on the strain calibration seat; the data acquisition and analysis device includes a data acquisition instrument and a strain value display terminal connected by a data line, and the data acquisition instrument is also connected to the charge strain gauge.

[0007] A further improvement of the technical solution of the present invention is that a through hole is provided on the strain test seat, and the strain test spring is installed at the upper end of the through hole.

[0008] A further improvement of the technical solution of the present invention is that the strain test spring is fixedly bonded to the through hole of the strain test seat using silicone grease adhesive.

[0009] A further improvement of the technical solution of the present invention is as follows: a through hole is provided on the strain calibration seat, the calibration test spring is installed in the through hole, and a calibration hammer positioning channel is provided at the upper end of the corresponding through hole.

[0010] A further improvement of the technical solution of the present invention is that the calibration test spring is fixedly bonded to the through hole of the strain calibration seat using silicone grease adhesive.

[0011] A further improvement of the technical solution of the present invention is that a plurality of vent holes are provided on the annular side wall of the calibration hammer positioning channel.

[0012] A further improvement of the technical solution of the present invention is that the firing pin and the calibration hammer are made of the same material.

[0013] A further improvement of the technical solution of the present invention is that the strain test seat is a cylindrical structure with a flange edge, and a through hole is provided on the side wall of the cylinder.

[0014] A further improvement of the technical solution of the present invention is that the strain calibration seat is a stepped cylindrical structure, and the calibration hammer positioning channel is inserted into one end of the strain calibration seat corresponding to the calibration test spring.

[0015] A method for testing a testing device using firing energy comprises the following steps:

[0016] First, a charge-type strain gauge is attached to the strain test shrapnel, which is then fixed to the corresponding position of the firing pin on the strain test base. The test line of the charge-type strain gauge is then connected to the data acquisition and analysis device. Finally, the strain test base is installed in the gun. By triggering the firing mechanism, the firing pin strikes the strain test shrapnel to obtain strain data. The strain deformation rate is displayed on the strain value display terminal.

[0017] Second, first, attach the charge-type strain gauge to the calibration test spring, and then fix it to the corresponding position of the calibration hammer on the strain calibration base; then connect the test line of the charge-type strain gauge to the data acquisition and analysis device; finally, the calibration hammer is dropped naturally at different heights to hit the strain test spring to obtain strain data, and the strain deformation rate is displayed on the strain value display terminal;

[0018] Third, the strain data measured by the firing energy strain device and the firing energy calibration device are compared. When the two are consistent, the potential energy and kinetic energy conversion results of the firing energy calibration device are calculated using relevant formulas to finally obtain the accurate value of the firing energy.

[0019] Further improvements to the technical solution of the present invention are:

[0020] Due to the adoption of the above technical solution, the technical effects achieved by the present invention are as follows:

[0021] The present invention utilizes a firing energy strain device, a firing energy calibration device, and a data acquisition and analysis device. The data generated by the firing energy calibration device and the firing energy strain device are used to obtain an accurate value for firing energy. This device enables efficient and accurate firing energy measurement.

[0022] The present invention can solve the problem that the firing energy cannot be measured when the firing pin hits the primer. The device can reliably and accurately test the firing energy of the firing mechanism, which is convenient for further optimization design of guns. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the connection between the firing energy strain device and the data acquisition and analysis device of the present invention;

[0024] Figure 2 This invention Figure 1 A partially enlarged schematic diagram of the firing pin and strain test shrapnel;

[0025] Figure 3 This is a schematic diagram of the connection between the firing energy calibration device of the present invention and the data acquisition and analysis device;

[0026] Figure 4 This invention Figure 3 A magnified schematic diagram of part A;

[0027] Among them, 1. Strain test spring, 2. Firing pin, 3. Charge strain gauge, 4. Calibration hammer positioning channel, 5. Strain test seat, 6. Wiring terminal, 7. Data acquisition instrument, 8. Data cable, 9. Strain value display terminal, 10. Calibration test spring, 11. Calibration hammer, 12. Strain calibration seat. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0029] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc., should be understood in a broad sense. For example, "connected" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a mechanical connection or an electrical connection; it may refer to a direct connection or an indirect connection through an intermediate medium; it may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0031] The invention relates to a firing energy testing device, which is used for testing the firing energy in the design and production of weapons.

[0032] The principle of this invention is to attach a strain gauge to a test plate. When the firing pin strikes the test plate, the strain gauge stretches along with the strain of the test plate. As the metal foil of the strain gauge stretches along with the strain, its resistance changes as the metal mechanically stretches. By measuring this change in resistance, the strain is measured, and the deformation rate is obtained. This is then compared with the energy measured and calibrated using a firing energy calibration device to obtain the firing energy.

[0033] The testing device mainly includes a firing energy strain device, a firing energy calibration device and a data acquisition and analysis device.

[0034] Among them, the firing energy strain device includes a strain test spring piece 1 and a firing pin 2; a charge-type strain gauge 3 is fixedly arranged on the lower surface of the strain test spring piece 1. The firing pin 2 hits the strain test spring piece 1, and the charge-type strain gauge 3 can measure the deformation of the strain test spring piece 1. The strain test spring piece 1 is installed on the strain test seat 5. Usually, a through hole is set on the strain test seat 5, and the strain test spring piece 1 is installed on the through hole of the strain test seat 5, so that after the firing pin 2 falls from a high place and hits the strain test spring piece 1, the strain test spring piece 1 can have space for deformation. Furthermore, the strain test spring piece 1 is fixedly bonded to the through hole of the strain test seat 5 using silicone adhesive. The strain test spring piece 1 is stably mounted on the strain test seat 5. As shown Figure 1 As shown, the strain test seat 5 is a cylindrical structure with a flange edge, and a through hole is set on the side wall of the cylinder.

[0035] Among them, the firing energy calibration device includes a calibration test spring 10 and a calibration hammer 11 for striking the calibration test spring 10. A charge-type strain gauge 3 is fixedly arranged on the lower surface of the calibration test spring 10. In fact, the calibration test spring 10 is the same part as the strain test spring 1. The calibration hammer 11 falls from a high place to strike the calibration test spring 10, and the charge-type strain gauge 3 is used to measure the deformation of the calibration test spring 10. Furthermore, a strain calibration seat 12 is provided, and the calibration test spring 10 is mounted on the strain calibration seat 12. After the calibration hammer 11 strikes the calibration test spring 10, the calibration test spring 10 has a deformation. The calibration test spring 10 is also fixedly bonded to the through hole of the strain calibration seat 12 using silicone adhesive.

[0036] The present invention sets the calibration test spring 10 on the strain calibration seat 12. Preferably, a through hole is set on the strain calibration seat 12, and the calibration test spring 10 is installed in the through hole. A calibration hammer positioning channel 4 is set for the calibration hammer 11, and the calibration hammer positioning channel 4 is correspondingly set at the upper end of the through hole. Further, as Figure 3As shown, the strain calibration base 12 is a stepped cylindrical structure, and the calibration hammer positioning channel 4 is inserted into the end of the strain calibration base 12 corresponding to the calibration test spring piece 10. When in use, the calibration hammer 11 falls along the calibration hammer positioning channel 4 and then accurately lands on the calibration test spring piece 10.

[0037] Furthermore, a plurality of vent holes are provided on the annular side wall of the calibration hammer positioning channel 4 . When the calibration hammer 11 falls, the pressure of the calibration hammer positioning channel 4 is consistent with that outside, which will not affect the normal falling of the calibration hammer 11 .

[0038] In a specific implementation of the present invention, the strain calibration base 12 is constructed of 45-grade steel and serves to position the calibration hammer 11. A U-shaped groove is provided at the bottom of the base 12 to facilitate the routing of the charge-type strain gauge 3. The calibration hammer positioning channel 4, constructed of 45-grade steel, serves as a guide, ensuring the accurate positioning of the calibration hammer 11. Several circular holes are provided in the channel's annular surface to prevent pressure buildup during calibration.

[0039] In a specific implementation of the present invention, the strain test piece 1 is made of 1mm thick 65Mn; the firing pin 2 is the firing pin in the tested gun, and is made of gun steel PCrNi1MoA; the charge-type strain gauge 3 is an imported strain gauge with the model KFGS-5-120-C1-11L1M2R; the strain test seat 5 is designed to simulate the structure of an actual cartridge and is made of 45 steel.

[0040] The test device is equipped with a data acquisition and analysis device for analyzing and displaying the deformation data received by the charge-type strain gauge 3 in real time. The data acquisition and analysis device primarily comprises a data acquisition instrument 7 and a strain value display terminal 9, as well as a data cable 8. The charge-type strain gauge 3 is connected to one end of the data acquisition instrument 7 via the data cable 8, and the other end of the data acquisition instrument 7 is connected to the strain value display terminal 9 via the data cable 8. The data collected by the charge-type strain gauge 3 is transmitted to the data acquisition instrument 7, which analyzes the data and transmits the deformation value to the strain value display terminal 9.

[0041] In a specific implementation of the present invention, the calibration hammer 11 is designed to simulate the firing pin head in the firing pin mechanism and is made of the same material as the firing pin 2.

[0042] The following is a test method using the above-mentioned firing energy test device, comprising the following steps:

[0043] First, a charge-type strain gauge is attached to the strain test shrapnel, which is then fixed to the corresponding position of the firing pin on the strain test base. The test line of the charge-type strain gauge is then connected to the data acquisition and analysis device. Finally, the strain test base is installed in the gun. By triggering the firing mechanism, the firing pin strikes the strain test shrapnel to obtain strain data. The strain deformation rate is displayed on the strain value display terminal.

[0044] Second, first, attach the charge-type strain gauge to the calibration test spring, and then fix it to the corresponding position of the calibration hammer on the strain calibration base; then connect the test line of the charge-type strain gauge to the data acquisition and analysis device; finally, the calibration hammer is dropped naturally at different heights to hit the strain test spring to obtain strain data, and the strain deformation rate is displayed on the strain value display terminal;

[0045] Third, the strain data measured by the firing energy strain device and the firing energy calibration device are compared. When the two are consistent, the potential energy and kinetic energy conversion results of the firing energy calibration device are calculated using relevant formulas to finally obtain the accurate value of the firing energy.

[0046] More specifically, first, the charge-type strain gauge 3 is pasted on the strain test shrapnel 1 using a room-temperature curing instant adhesive, and then fixed to the corresponding position of the firing pin 2 on the strain test seat 5 using silicone adhesive; then the test line of the charge-type strain gauge 3 is connected to the terminal 6, connected to the input channel of the data acquisition instrument 7, and the output channel is connected to the strain value display terminal 9 through the data line 8; finally, the strain test seat 5 is installed in the gun, and the firing mechanism is triggered to make the firing pin 2 hit the strain test piece 1 to obtain strain data, and the strain deformation rate is displayed on the strain value display terminal.

[0047] exist Figure 3 In the schematic diagram of the firing energy calibration device shown, the charge-type strain gauge 3 is first pasted on the calibration test spring 10 using a room-temperature hardening instant adhesive, and then fixed to the corresponding position of the calibration hammer 11 on the strain calibration seat 12 using silicone adhesive; then the data line 8 of the charge-type strain gauge 3 is connected to the terminal 6, connected to the input channel of the data acquisition instrument 7, and the output channel is connected to the strain value display terminal 9 through the data line 8; finally, the calibration hammer positioning channel 4 is vertically inserted into the matching hole of the strain calibration seat 12, and the calibration hammer 11 falls naturally at different heights in the calibration hammer positioning channel 4 to hit the calibration test spring 10 to obtain strain data, and the strain deformation rate is displayed on the strain value display terminal.

[0048] The strain data measured by the firing energy strain device and the firing energy calibration device are compared. When the two are consistent, the potential energy and kinetic energy conversion results of the firing energy calibration device are calculated using relevant formulas to ultimately obtain the precise value of the firing energy.

[0049] The present invention can solve the problem that the firing energy cannot be measured when the firing pin hits the primer. The device can reliably and accurately test the firing energy of the firing mechanism, which is convenient for further optimization design of guns.

[0050] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A firing energy testing device, characterized by: The invention comprises a firing energy strain device, a firing energy calibration device and a data acquisition and analysis device; the firing energy strain device comprises a strain test spring (1) with a charge type strain gauge (3) fixedly arranged on the lower surface and a firing pin (2) for striking the strain test spring, and the strain test spring (1) is mounted on a strain test seat (5); the firing energy calibration device comprises a calibration test spring (10) with a charge type strain gauge (3) fixedly arranged on the lower surface and a calibration hammer (11) for striking the calibration test spring (10), and the calibration test spring (10) is mounted on a strain calibration seat (12); the data acquisition and analysis device comprises a firing energy strain device, a firing energy calibration device and a data acquisition and analysis device; the firing energy strain device comprises a strain test spring (1) with a charge type strain gauge (3) fixedly arranged on the lower surface and a calibration hammer (11) for striking the calibration test spring (10), and the calibration test spring (10) is mounted on a strain calibration seat (12); The device includes a data acquisition instrument (7) and a strain value display terminal (9) connected via a data line (8), and the data acquisition instrument (7) is also connected to a charge-type strain gauge (3); a through hole is provided on the strain test seat (5), and a strain test spring piece (1) is installed at the upper end of the through hole; a plurality of vent holes are provided on the annular side wall of the calibration hammer positioning channel (4); a through hole is provided on the strain calibration seat (12), and a calibration test spring piece (10) is installed in the through hole, and a calibration hammer positioning channel (4) is provided at the upper end of the corresponding through hole; the calibration test spring piece (10) is fixedly bonded to the through hole of the strain calibration seat (12) using silicone grease adhesive; The strain test seat (5) is a cylindrical structure with a flange edge, and a through hole is set on the side wall of the cylinder; the strain calibration seat (12) is a stepped cylindrical structure, and the calibration hammer (11) positioning channel is inserted into one end of the strain calibration seat (12) corresponding to the calibration test spring (10); A method for testing a firing energy testing device comprises the following steps: First, a charge-type strain gauge is attached to the strain test shrapnel, which is then fixed to the corresponding position of the firing pin on the strain test base. The test line of the charge-type strain gauge is then connected to the data acquisition and analysis device. Finally, the strain test base is installed in the gun. By triggering the firing mechanism, the firing pin strikes the strain test shrapnel to obtain strain data. The strain deformation rate is displayed on the strain value display terminal. Second, first, attach the charge-type strain gauge to the calibration test spring, and then fix it to the corresponding position of the calibration hammer on the strain calibration base; then connect the test line of the charge-type strain gauge to the data acquisition and analysis device; finally, the calibration hammer is dropped naturally at different heights to hit the strain test spring to obtain strain data, and the strain deformation rate is displayed on the strain value display terminal; Third, the strain data measured by the firing energy strain device and the firing energy calibration device are compared. When the two are consistent, the potential energy and kinetic energy conversion results of the firing energy calibration device are calculated using relevant formulas to finally obtain the accurate value of the firing energy.

2. The firing energy testing device according to claim 1, characterized in that: The strain test spring (1) is fixedly bonded to the through hole of the strain test seat (5) using silicone adhesive.

3. The firing energy testing device according to claim 1, characterized in that: The firing pin (2) and the calibration hammer (11) are made of the same material.

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