Helmet shell strength testing equipment

Abstract

The invention discloses helmet shell strength testing equipment, and relates to the technical field of security and protection instrument processing. According to the technical scheme, by arranging the clamping table comprising the multiple clamping single bodies, when the shell to be detected is placed above the clamping table, the driver is started to inject pressure into the confluence cavity, due to the communicating vessel principle, in the injection pressing process, the inner pressing rod and the outer pressing rod can conduct output outwards in a self-adaptive mode, and the detection accuracy is improved. Therefore, the inner clamping plate and the outer clamping plate are respectively driven to stably and uniformly clamp the helmet shell; after the shell is uniformly clamped by a clamping assembly above the clamping table, pressure items including vertical heavy pressure from top to bottom and lateral multi-point impact are selected according to test requirements, and after a pressure test item is determined by controlling a regulating valve or a diverter valve, a driver is started to apply pressure to the shell; in the pressure applying process, the central controller receives and records sensing pressure change data of the pressure sensors at different point positions, and a pressure data curve is drawn through a built-in operation module.

Description

Technical Field

[0001] The invention belongs to the technical field of security equipment processing, and in particular relates to a helmet shell strength testing device. Background Art

[0002] Riot helmets are important security equipment, and their main protective component is the external shell structure. The higher the shell structure strength, the stronger the protective ability of the corresponding riot helmet. Due to relevant policies and laws and regulations, riot helmets are usually mainly protected against heavy pressure and point impact pressure, and an important manifestation of their protective ability is whether they will deform when subjected to such pressure. In the prior art, this type of pressure strength test experiment is usually conducted by simulating the wearing of the finished product under pressure. Although this method can test the protective ability of the finished helmet, due to the interference of structures such as the lining, it is difficult to accurately reflect the strength of the shell itself; therefore, we design a strength testing device for the helmet shell to make this type of pressure test data more accurate. Summary of the invention

[0003] The purpose of the present invention is to provide a helmet shell strength testing device to solve the problem that the existing finished helmet testing scheme cannot accurately obtain the strength data of the shell itself.

[0004] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention is a helmet shell strength testing device, comprising a support base, a working plate, a clamping platform and a driver, wherein the driver is an electric hydraulic cylinder structure, which is arranged between the working plate and the support base; a plurality of support rods are bolted and fixed between the support base and the working plate, and the clamping platform is arranged between the plurality of support rods and bolted and fixed with the support rods; the technical solution simulates the helmet under pressure and impact conditions by the working plate to test the bearing capacity of the shell, specifically testing the degree of diffusion of the point force of the helmet shell after pressure and impact.

[0005] Furthermore, the upper surface of the working plate is bolted and fixed with a main pressure cylinder, a flow divider and several regulators, wherein the flow divider is a right-angle joint structure, and the two opposite ends thereof are bolted and fixed with auxiliary pressure cylinders; a side flange of the flow divider is connected with a working pipe, and one end of the working pipe passes through the working plate and extends to the bottom of the driver; a main pressure pipe is flanged between the top of the working pipe and the main pressure cylinder, and a regulating valve is installed at the connection between the main pressure pipe and the working pipe; wherein the regulating valve is a single-pass valve structure, that is, during the same working time, only one path of the main pressure pipe and the working pipe is connected to the driver; The main pressure rod is slidably engaged inside the main pressure cylinder, and a piston structure is formed between the two. A main pressure plate is welded and fixed to the lower end of the main pressure rod, and the main pressure plate is arranged directly above the clamping platform. The piston structure formed by the main pressure cylinder and the main pressure rod directly acts on the upper part of the helmet shell, which is used to simulate pressure application and realize pressure control by controlling the output of the driver. A plurality of swing pressure arms are hinged on the peripheral side surface of the working plate, and a pendulum is welded and fixed to one end of the swing pressure arm, and the pendulum is arranged below the working plate. A driving gear is welded and fixed to the side surface of the hinge shaft of the swing pressure arm; an auxiliary pressure rod is slidably engaged with the inside of the auxiliary pressure cylinder, and a driving gear rod is welded and fixed to one side of the auxiliary pressure rod through a connecting rod; a plurality of driving grooves are opened inside the working plate, wherein the driving gear rod extends into the driving groove through the sliding connection of the connecting rod, and the tooth groove of the driving gear rod is meshed with the driving gear; a diverter valve is installed on the surface of the diverter, wherein the diverter valve is a three-way valve, and the two auxiliary pressure cylinders and the working pipe are connected through the diverter valve, that is, the three can achieve two-way and three-way communication through the diverter valve; in combination with the above structure, it should be noted that in the actual working structure, the number of swing pressure arms includes at least four groups, and the corresponding number of driving gear rods includes two groups, that is, in actual work, the diverter only needs to control two adjacent groups of swing pressure arms to achieve control of all swing pressure arms.

[0006] Furthermore, a driven gear is welded to one end of the hinge shaft; a linkage chamber is also provided inside the working plate, and the linkage chamber is arranged between two adjacent driven gears; a plurality of adjusting rods are slidably engaged with the upper surface of the working plate, and a linkage gear is rotatably engaged with the lower end of the adjusting rod, wherein the linkage gear is arranged inside the linkage chamber, and when the adjusting rod is pressed down, the two adjacent driven gears are meshed and linked through the linkage gear; based on the above principle, the number of linkage gears also includes two groups, i.e., they are arranged between the hinge shaft with the driving gear and one of the adjacent hinge shafts.

[0007] Furthermore, a driven plate is welded and fixed to the upper end of the adjusting rod, and a return spring is installed between the driven plate and the working plate; a driving plate is welded and fixed to one surface of the adjuster, and the driving plate is arranged directly above the driven plate; wherein the driving plate is an electromagnet, and the driven plate is a permanent magnet, and when the driving plate is energized, the two magnetically repel each other, that is, when the driving plate is energized, it uses the magnetic repulsion force to push the driven plate down, thereby making the linkage gear and the driven gear mesh; wherein in order to achieve flexible engagement, the linkage gear and the driven gear are both bevel gear structures; based on the above principles, in actual work, the operator can change the pressure item of the test by controlling the regulating valve, and change the number and direction of the impacted points by controlling the diverter valve.

[0008] Furthermore, the upper surface of the clamping platform is provided with a plurality of clamping grooves, and an inner clamping plate and an outer clamping plate are slidably engaged inside the clamping grooves, the two constitute a clamping unit, and there is a gap between the inner clamping plate and the outer clamping plate; a plurality of the clamping units are symmetrically distributed in pairs; connecting springs are respectively installed between the inner clamping plate and the outer clamping plate at the opposite ends of the clamping grooves; a confluence chamber is provided inside the clamping platform, and a plurality of inner cavities and a plurality of outer cavities are provided on the peripheral side of the confluence chamber, an inner pressure rod is slidably engaged inside the inner cavity, and the output end of the inner pressure rod is welded and fixed to the inner clamping plate; an outer pressure rod is slidably engaged inside the outer cavity, and the output end of the outer pressure rod is welded and fixed to the outer clamping plate; an auxiliary pressure pipe is connected to the flange at the lower end of the confluence chamber, and one end of the auxiliary pressure pipe extends to be connected to the bottom of the driver; a communicating vessel structure based on a piston structure is formed between the inner cavity and the outer cavity through the confluence chamber; pressure sensors are embedded on the outer side surface of the inner clamping plate and the inner side surface of the outer clamping plate; It should be additionally described that an infrared receiver is installed on the lower surface of the working plate, and an infrared transmitter is installed on the upper surface of the clamping table, that is, when the shell to be detected is placed above the clamping table, its own projection covers the infrared transmitter, thereby transmitting the corresponding light and shadow signal to the infrared receiver, and then controlling the start of the clamping assembly; combined with the above structure, in the actual working process, when the shell to be detected is placed above the clamping table, the outer wall of the shell is usually placed between the inner clamping plate and the outer clamping plate, and the start driver is used to inject pressure into the confluence cavity. Due to the principle of communicating vessels, during the injection and pressing process, both the inner pressure rod and the outer pressure rod can output outward adaptively, thereby driving the inner clamping plate and the outer clamping plate to clamp the helmet shell stably and evenly.

[0009] Furthermore, shut-off valves are installed at the connections between the working tube and the auxiliary pressure tube and the driver; a central controller is also installed on the upper surface of the support base, wherein the shut-off valve, regulating valve and diverter valve are all solenoid valves, and are electrically connected to and controlled by the central controller; the drive motor and drive plate of the driver are electrically connected to and controlled by the central controller.

[0010] Furthermore, the central controller is internally provided with a calculation module and a digital-to-analog conversion module, wherein the digital-to-analog conversion module receives the pressure data sensed by the pressure sensor and converts it into digital information and sends it to the calculation module; the central controller also includes a storage module and a display module, both of which receive the data calculated by the calculation module and store and display it respectively.

[0011] The present invention has the following beneficial effects: This technical solution sets a working plate to simulate the bearing capacity of the helmet shell under pressure and impact, and specifically tests the diffusion degree of the force on the helmet shell after pressure and impact; the piston structure composed of the main pressure cylinder and the main pressure rod directly acts on the upper part of the helmet shell to simulate pressure, and the pressure control is realized by controlling the output of the driver; At the same time, the present technical solution sets a clamping platform including a plurality of clamping units. When the shell to be tested is placed on the clamping platform, the outer wall of the shell is usually placed between the inner clamping plate and the outer clamping plate. At this time, the driver is started to inject pressure into the confluence cavity. Due to the communicating vessel principle, during the injection process, the inner pressure rod and the outer pressure rod can output outward adaptively, thereby driving the inner clamping plate and the outer clamping plate to clamp the helmet shell stably and evenly. When the clamping assembly above the clamping table clamps the shell evenly, select the pressure items according to the test needs, including vertical heavy pressure from top to bottom and impact at multiple points on the side. After determining the pressure test items by controlling the regulating valve or the diverter valve, start the driver to apply pressure to the shell. During the pressure application process, the central controller receives and records the induced pressure change data of the pressure sensors at different points, and draws the pressure data curve through the built-in calculation module.

[0012] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0014] Figure 1 It is a front structural diagram of the helmet shell strength testing device of the present invention; Figure 2 for Figure 1 Partial display diagram of Part A; Figure 3 It is a rear view structural diagram of the helmet shell strength testing device of the present invention; Figure 4 for Figure 1 A top view of Figure 5 for Figure 4 Schematic diagram of the structure of the middle section BB; Figure 6 for Figure 5 A partial display of part D in the middle; Figure 7 for Figure 5 A partial display of part E in the middle; Figure 8 for Figure 5 Schematic diagram of the structure of the FF in the middle section; Fig. 9 for Figure 8 A partial display of the middle G section; Fig.10 for Figure 4 Schematic diagram of the structure of CC in the middle section; Fig.11 for Fig.10 A partial display of section H.

[0015] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. Support base; 2. Working plate; 3. Clamping table; 4. Driver; 5. Support rod; 201. Main pressure cylinder; 202. Diverter; 203. Regulator; 204. Auxiliary pressure cylinder; 205. Working pipe; 206. Main pressure pipe; 207. Regulating valve; 2011. Main pressure rod; 2012. Main pressure plate; 208. Swing pressure arm; 2081. Pendulum; 2082. Hinge shaft; 2083. Driving gear; 2041. Auxiliary pressure rod; 2042. Connecting rod; 2043. Driving gear rod; 209. Driving slide; 20 21. Diverter valve; 2084. Driven gear; 210. Linkage chamber; 211. Adjustment rod; 212. Linkage gear; 213. Driven plate; 214. Return spring; 2031. Drive plate; 301. Clamping groove; 302. Inner clamping plate; 303. Outer clamping plate; 304. Connecting spring; 305. Converging chamber; 3051. Inner cavity channel; 3052. Outer cavity channel; 3053. Inner pressure rod; 3054. Outer pressure rod; 306. Auxiliary pressure pipe; 307. Pressure sensor; 6. Shut-off valve; 7. Central controller. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] In the description of the present invention, it should be understood that the terms "upper", "middle", "outer", "inner" and the like indicating directions or positional relationships are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0018] See also Figure 1-Figure 11As shown, the present invention is a helmet shell strength testing device, comprising a support base 1, a working plate 2, a clamping platform 3 and a driver 4, wherein the driver 4 is an electric hydraulic cylinder structure, which is arranged between the working plate 2 and the support base 1; a plurality of support rods 5 are bolted and fixed between the support base 1 and the working plate 2, and the clamping platform 3 is arranged between the plurality of support rods 5 and bolted and fixed with the support rods 5; the technical scheme simulates the helmet under pressure and impact conditions to test the bearing capacity of the shell through the working plate 2, and specifically tests the degree of diffusion of the point force of the helmet shell after pressure and impact.

[0019] Preferably, a main pressure cylinder 201, a flow divider 202 and a plurality of regulators 203 are bolted and fixed on the upper surface of the working plate 2, wherein the flow divider 202 is a right-angle joint structure, and auxiliary pressure cylinders 204 are bolted and fixed at both opposite ends thereof; a side flange of the flow divider 202 is connected to a working pipe 205, and one end of the working pipe 205 passes through the working plate 2 and extends to the bottom of the driver 4; a main pressure pipe 206 is flange-connected between the working pipe 205 and the top of the main pressure cylinder 201, and a regulating valve 207 is installed at the connection between the main pressure pipe 206 and the working pipe 205; wherein the regulating valve 207 is a single-pass valve structure, that is, during the same working time, only one path of the main pressure pipe 206 and the working pipe 205 is connected to the driver 4; The main pressure cylinder 201 is internally slidably engaged with the main pressure rod 2011, and a piston structure is formed between the two; the lower end of the main pressure rod 2011 is welded and fixed with a main pressure plate 2012, and the main pressure plate 2012 is arranged directly above the clamping platform 3; wherein the piston structure formed by the main pressure cylinder 201 and the main pressure rod 2011 directly acts on the upper part of the helmet shell, and is used to simulate pressure, and the pressure control is realized by controlling the output of the driver 4; a plurality of swing pressure arms 208 are hinged on the peripheral side of the working plate 2, and a pendulum 2081 is welded and fixed at one end of the swing pressure arm 208, and the pendulum 2081 is arranged below the working plate 2; A driving gear 2083 is welded and fixed to the side surface of the hinge shaft 2082 of the swing pressure arm 208; an auxiliary pressure rod 2041 is slidably engaged inside the auxiliary pressure cylinder 204, and a driving gear rod 2043 is welded and fixed to one side of the auxiliary pressure rod 2041 through a connecting rod 2042; a plurality of driving grooves 209 are opened inside the working plate 2, wherein the driving gear rod 2043 slides and extends to the inside of the driving groove 209 through the connecting rod 2042, and the tooth groove of the driving gear rod 2043 meshes with the driving gear 2083; a diverter valve 2021 is installed on the surface of the diverter 202, The diverter valve 2021 is a three-way valve, and the two auxiliary pressure cylinders 204 and the working pipe 205 are connected through the diverter valve 2021, that is, the three can achieve two-way and three-way communication through the diverter valve 2021; combined with the above structure, it should be noted that, in the actual working structure, the number of swing pressure arms 208 includes at least four groups, and the corresponding number of driving gear rods 2043 includes two groups, that is, in actual work, the diverter 202 only needs to control two adjacent groups of swing pressure arms 208 to achieve control of all swing pressure arms 208.

[0020] Preferably, a driven gear 2084 is welded to one end of the hinge shaft 2082; a linkage chamber 210 is also provided inside the working plate 2, and the linkage chamber 210 is arranged between two adjacent driven gears 2084; a plurality of adjusting rods 211 are slidably engaged on the upper surface of the working plate 2, and a linkage gear 212 is rotatably engaged at the lower end of the adjusting rod 211, wherein the linkage gear 212 is arranged inside the linkage chamber 210, and when the adjusting rod 211 is pressed down, two adjacent driven gears 2084 are meshed and linked through the linkage gear 212; based on the above principle, the number of linkage gears 212 also includes two groups, i.e., they are arranged between the hinge shaft 2082 with the driving gear 2083 and one of the adjacent hinge shafts 2082.

[0021] Preferably, a driven plate 213 is welded and fixed to the upper end of the adjusting rod 211, and a return spring 214 is installed between the driven plate 213 and the working plate 2; a driving plate 2031 is welded and fixed to one surface of the regulator 203, and the driving plate 2031 is arranged directly above the driven plate 213; wherein the driving plate 2031 is an electromagnet, and the driven plate 213 is a permanent magnet, and when the driving plate 2031 is energized, the two magnetically repel each other, that is, when the driving plate 2031 is energized, it uses the magnetic repulsion force to push the driven plate 213 down, thereby making the linkage gear 212 mesh with the driven gear 2084; wherein in order to achieve flexible engagement, the linkage gear 212 and the driven gear 2084 are both bevel gear structures; based on the above principles, in actual work, the operator can change the pressure item of the test by controlling the regulating valve 207, and change the number and direction of the impacted points by controlling the diverter valve 2021.

[0022] Preferably, a plurality of clamping grooves 301 are provided on the upper surface of the clamping platform 3, and an inner clamping plate 302 and an outer clamping plate 303 are slidably engaged inside the clamping grooves 301, and the two constitute a clamping unit, and there is a gap between the inner clamping plate 302 and the outer clamping plate 303; the plurality of clamping units are symmetrically distributed in pairs; connecting springs 304 are installed between the inner clamping plate 302 and the outer clamping plate 303 at opposite ends of the clamping grooves 301; a confluence cavity 305 is provided inside the clamping platform 3, and a plurality of inner cavities 3051 and a plurality of outer cavities 3052 are provided on the side surface of the confluence cavity 305, and a plurality of inner cavities 3051 and an outer cavities 3052 are slidably engaged inside the inner cavities 3051 An inner pressure rod 3053, the output end of which is welded and fixed to the inner clamping plate 302; an outer pressure rod 3054 is slidably engaged inside the outer cavity 3052, and the output end of the outer pressure rod 3054 is welded and fixed to the outer clamping plate 303; an auxiliary pressure pipe 306 is connected to the flange at the lower end of the confluence cavity 305, and one end of the auxiliary pressure pipe 306 extends to the bottom of the driver 4; a communicating vessel structure based on a piston structure is formed between the inner cavity 3051 and the outer cavity 3052 through the confluence cavity 305; pressure sensors 307 are embedded on the outer side surface of the inner clamping plate 302 and the inner side surface of the outer clamping plate 303; It is necessary to additionally describe that an infrared receiver is installed on the lower surface of the working plate 2, and an infrared transmitter is installed on the upper surface of the clamping platform 3, that is, when the shell to be detected is placed on the clamping platform 3, its own projection covers the infrared transmitter, thereby transmitting the corresponding light and shadow signal to the infrared receiver, and then controlling the start of the clamping component; combined with the above structure, in the actual working process, when the shell to be detected is placed on the clamping platform 3, the outer wall of the shell is usually placed between the inner clamping plate 302 and the outer clamping plate 303, and the start driver 4 is at this time to inject pressure into the confluence cavity 305, due to the principle of communicating vessels, during the injection process, the inner pressure rod 3053 and the outer pressure rod 3054 can both adaptively output outward, thereby respectively driving the inner clamping plate 302 and the outer clamping plate 303 to stably and evenly clamp the helmet shell.

[0023] Preferably, a shut-off valve 6 is installed at the connection between the working tube 205 and the auxiliary pressure tube 306 and the driver 4; a central controller 7 is also installed on the upper surface of the support base 1, wherein the shut-off valve 6, the regulating valve 207 and the diverter valve 2021 are all solenoid valves, and are electrically connected to and controlled by the central controller 7; the driving motor and the driving plate 2031 of the driver 4 are electrically connected to and controlled by the central controller 7.

[0024] Preferably, a calculation module and a digital-to-analog conversion module are provided inside the central controller 7, wherein the digital-to-analog conversion module receives the pressure data sensed by the pressure sensor 307 and converts it into digital information and sends it to the calculation module; the central controller 7 also includes a storage module and a display module, both of which receive the data calculated by the calculation module and store and display it respectively.

[0025] Example: The present embodiment is a specific test method for a helmet shell strength test device: after the clamping assembly above the clamping platform 3 clamps the shell evenly, the pressure items are selected according to the test needs, including vertical pressure from top to bottom and impact at multiple points on the side. After the pressure test items are determined by controlling the regulating valve 207 or the diverter valve 2021, the driver 4 is started to apply pressure to the shell; during the pressure application process, the central controller 7 receives and records the induced pressure change data of the pressure sensor 307 at different points, and draws a pressure data curve through the built-in calculation module.

[0026] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0027] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A helmet shell strength testing device, comprising a support base (1), a working plate (2), a clamping table (3) and a driver (4), characterized in that: The driver (4) is an electric hydraulic cylinder structure, which is arranged between the working plate (2) and the support base (1); a plurality of support rods (5) are bolted and fixed between the support base (1) and the working plate (2), and the clamping platform (3) is arranged between the plurality of support rods (5) and bolted and fixed to the support rods (5).

2. The helmet shell strength testing equipment according to claim 1, characterized in that: The upper surface of the working plate (2) is bolted and fixed with a main pressure cylinder (201), a flow divider (202) and a plurality of regulators (203), wherein the flow divider (202) is a right-angle joint structure, and the two opposite ends thereof are bolted and fixed with auxiliary pressure cylinders (204); a side surface of the flow divider (202) is flange-connected with a working pipe (205), and one end of the working pipe (205) penetrates the working plate (2) and extends to the bottom of the driver (4); a main pressure pipe (206) is flange-connected between the working pipe (205) and the top end of the main pressure cylinder (201), and a regulating valve (207) is installed at the connection between the main pressure pipe (206) and the working pipe (205); The main pressure cylinder (201) is internally slidably engaged with a main pressure rod (211), and a piston structure is formed between the two. A main pressure plate (212) is welded and fixed to the lower end of the main pressure rod (211), and the main pressure plate (212) is arranged directly above the clamping platform (3). A plurality of swing pressure arms (208) are hingedly connected to the peripheral side surface of the working plate (2), and a pendulum (2081) is welded and fixed to one end of the swing pressure arm (208), and the pendulum (2081) is arranged below the working plate (2). A driving gear (2083) is welded and fixed to the side surface of the hinge shaft (2082) of the swing pressure arm (208); an auxiliary pressure rod (2041) is slidably engaged inside the auxiliary pressure cylinder (204), and a driving gear rod (2043) is welded and fixed to one side of the auxiliary pressure rod (2041) via a connecting rod (2042); a plurality of driving slide grooves (209) are provided inside the working plate (2), wherein the driving gear rod (2043) slides and extends into the driving slide groove (209) via the connecting rod (2042), and the tooth groove of the driving gear rod (2043) meshes with the driving gear (2083); a diverter valve (2021) is installed on the surface of the diverter (202), wherein the diverter valve (2021) is a three-way valve, and the two auxiliary pressure cylinders (204) and the working pipe (205) are connected via the diverter valve (2021).

3. The helmet shell strength testing device according to claim 2, characterized in that: A driven gear (2084) is welded to one end of the hinge shaft (2082); a linkage chamber (210) is further provided inside the working plate (2), and the linkage chamber (210) is arranged between two adjacent driven gears (2084); a plurality of adjustment rods (211) are slidably engaged on the upper surface of the working plate (2), and a linkage gear (212) is rotatably engaged at the lower end of the adjustment rod (211), wherein the linkage gear (212) is arranged inside the linkage chamber (210), and when the adjustment rod (211) is pressed downward, two adjacent driven gears (2084) are meshed and linked via the linkage gear (212).

4. The helmet shell strength testing device according to claim 3, characterized in that: A driven plate (213) is welded and fixed to the upper end of the regulating rod (211), and a return spring (214) is installed between the driven plate (213) and the working plate (2); a driving plate (2031) is welded and fixed to one surface of the regulator (203), and the driving plate (2031) is arranged directly above the driven plate (213); wherein the driving plate (2031) is an electromagnet and the driven plate (213) is a permanent magnet, and when the driving plate (2031) is energized, the two magnetically repel each other.

5. The helmet shell strength testing device according to claim 4, characterized in that: The upper surface of the clamping platform (3) is provided with a plurality of clamping grooves (301), and an inner clamping plate (302) and an outer clamping plate (303) are slidably engaged inside the clamping grooves (301), and the two constitute a clamping unit, and there is a gap between the inner clamping plate (302) and the outer clamping plate (303); the plurality of clamping units are symmetrically distributed in pairs; connecting springs (304) are respectively installed between the opposite ends of the clamping grooves (301) and the inner clamping plate (302) and the outer clamping plate (303); a confluence cavity (305) is provided inside the clamping platform (3), and the side surface of the confluence cavity (305) is A plurality of inner cavities (3051) and a plurality of outer cavities (3052) are provided, wherein an inner pressure rod (3053) is slidably engaged inside the inner cavity (3051), and the output end of the inner pressure rod (3053) is welded and fixed to the inner clamping plate (302); an outer pressure rod (3054) is slidably engaged inside the outer cavity (3052), and the output end of the outer pressure rod (3054) is welded and fixed to the outer clamping plate (303); the lower end flange of the confluence cavity (305) is connected to an auxiliary pressure pipe (306), and one end of the auxiliary pressure pipe (306) extends to be connected to the bottom of the driver (4).

6. The helmet shell strength testing device according to claim 5, characterized in that: A communicating vessel structure based on a piston structure is formed between the inner cavity (3051) and the outer cavity (3052) via a confluence cavity (305); and pressure sensors (307) are embedded on the outer side surface of the inner clamping plate (302) and the inner side surface of the outer clamping plate (303).

7. The helmet shell strength testing device according to claim 6, characterized in that: A shut-off valve (6) is installed at the connection between the working tube (205) and the auxiliary pressure tube (306) and the driver (4); a central controller (7) is also installed on the upper surface of the support base (1), wherein the shut-off valve (6), the regulating valve (207) and the diverter valve (2021) are all solenoid valves, and are electrically connected to and controlled by the central controller (7); and the drive motor and the drive plate (2031) of the driver (4) are electrically connected to and controlled by the central controller (7).

8. The helmet shell strength testing device according to claim 7, characterized in that: The central controller (7) is internally provided with a computing module and a digital-to-analog conversion module, wherein the digital-to-analog conversion module receives pressure data sensed by the pressure sensor (307) and converts the data into digital information and sends it to the computing module; the central controller (7) also includes a storage module and a display module, both of which receive data computed by the computing module and store and display the data respectively.

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