A target fixing device capable of switching penetration and explosion test modes

Abstract

The application discloses a target fixing device capable of realizing penetration and explosion test mode switching, which comprises a rectangular support base and a rectangular clamping seat. The support base is capable of transverse distance adjustment and locking at two adjacent sides, the clamping seat is formed by hinging three I-shaped steels of a right-angle steel, a first clamping arm and a second clamping arm, the right-angle steel is hinged to the non-movable side of the base to realize 0-90° overturning, the two-stage clamping arms slide along the I-shaped steel groove and are locked by a slide pin-groove hole-screw rod, different size test plates can be quickly fastened, the telescopic supporting legs are hinged to the clamping seat, the legs are erected during horizontal test and explosives are hung on the upper part of the legs, the legs are locked on the ground during vertical test, and one leg is used for two purposes to complete mode switching. The penetration and explosion test can be continuously carried out by one-time clamping, the repeated disassembly and assembly errors are eliminated, the cycle is shortened, and the cost is reduced.

Description

Technical Field

[0001] This invention relates to a target fixing device that enables switching between penetration and explosion test modes, belonging to the field of impact resistance testing. Background Technology

[0002] Existing penetration and explosion tests each use independent fixtures: explosion tests require the specimen to be horizontally fixed and explosives suspended above it; penetration tests require the same specimen to be vertically fixed and withstand the frontal impact of the projectile. Switching between these two modes necessitates repeated disassembly and assembly of the specimen and replacement of the fixtures, resulting in long testing cycles, loss of positioning references, and accumulated clamping errors. Furthermore, it requires two sets of large support equipment, leading to high costs and large footprints. Additionally, existing explosion tests involve temporarily binding supports on-site to suspend the explosives, which is cumbersome. Therefore, there is an urgent need for a universal device that can quickly switch between the two testing modes without disassembly. Summary of the Invention

[0003] The present invention provides a target fixing device that enables switching between penetration and explosion test modes in order to solve the problems existing in the prior art.

[0004] The technical solutions adopted in this invention are as follows:

[0005] A target fixing device capable of switching between penetration and explosion test modes, comprising:

[0006] The support base is a rectangular frame, the sides of which can be adjusted laterally and locked.

[0007] The clamping seat is rectangular and includes a right angle steel, a first clamping arm and a second clamping arm. The right angle steel is hinged to the support base, allowing the clamping seat to flip between horizontal and vertical. Both the first clamping arm and the second clamping arm can slide and rotate to press or release the test plate.

[0008] The supporting leg is hinged to the clamping seat. When the clamping seat is in a horizontal state, the supporting leg is erected vertically to suspend explosives for explosion tests; when the clamping seat is in a vertical state, the supporting leg is supported on the ground for penetration tests.

[0009] Furthermore, all four sides of the support base are I-beams, and the ends of the slidable sides of the support base are welded with connecting plates. The connecting plates are locked with bolts to the rows of mounting holes in the I-beam grooves of the corresponding sides.

[0010] Furthermore, the right-angle steel, the first clamping arm, and the second clamping arm are all I-beams. The first clamping arm can slide and rotate on one side of the right-angle steel, and the second clamping arm can slide and rotate on the first clamping arm. The second clamping arm is fixed to the other side of the right-angle steel.

[0011] Furthermore, both the right-angle steel and the first clamping arm are provided with slots, and both the first clamping arm and the second clamping arm are provided with sliding pins. The sliding pins slide in the I-shaped grooves on the corresponding sides of the clamping seat. A screw is fixed on the sliding pin, the screw passes through the corresponding slot, and a nut is threaded onto the screw.

[0012] Furthermore, the support leg is a telescopic structure with a mother and child rod.

[0013] Furthermore, a gear and tooth block locking mechanism is provided between the support leg and the clamping seat to maintain a fixed angle when the support leg is on the ground or in an upright position.

[0014] Furthermore, the gear and tooth block locking mechanism includes a gear, a tooth block, a pull rod, and a spring. The gear is fixed on the support leg and coaxial with the hinge point of the support leg. The pull rod passes through the clamping seat, the spring is sleeved on the pull rod, and the tooth block is fixed to the end of the pull rod. Under the action of the spring force, the tooth surface on the tooth block meshes with the gear.

[0015] Furthermore, a limiting block is rotatably connected to the clamping seat, and the limiting block is used to axially limit the pull rod after the gear and the tooth block mesh.

[0016] Furthermore, it also includes protective nets, which are inserted into both sides of the clamp when the clamp is in a vertical position.

[0017] Furthermore, it also includes a suspension rod, which is fixed to the support leg when the support leg is in the upright position to form a suspension point for the explosive.

[0018] The present invention has the following beneficial effects:

[0019] One device can complete both explosion-proof and penetration tests: the test mode can be switched by simply clamping the device once, rotating the clamping seat from 0 to 90 degrees and changing the posture of the support legs, eliminating repeated disassembly and assembly errors and shortening the test cycle.

[0020] Adjacent bilateral adjustable rectangular frame: The two adjacent sides slide and lock, which can adapt to test plates of different sizes, with strong compatibility. After adjustment and locking, a rigid load-bearing boundary is formed.

[0021] The I-beam channel also serves as a guide rail: the sliding pin, slot, and screw form a sliding-locking system without additional rails, which is simple in structure, has few parts, and is low in cost.

[0022] The support leg serves two purposes: when erected, it acts as a medicine suspension support, and when supported on the ground, it provides penetration reaction force, reducing the investment in dedicated supports; the gear-tooth block mechanism enables instantaneous angle locking, making operation quick and safe.

[0023] In the vertical configuration, a protective net is inserted to prevent ricochets and fragments from flying sideways; in the horizontal configuration, the base is placed directly on the bottom of the right-angle steel frame, and the explosive load is evenly transferred through the frame, improving the safety of the test and the stability of the data. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0025] Figure 2 This is a structural diagram of the supporting base.

[0026] Figure 3 This is a structural diagram of the clamping seat.

[0027] Figure 4 This is an exploded view of the clamping seat.

[0028] Figure 5 This is an assembly drawing of the first clamping arm and the second clamping arm.

[0029] Figure 6 This is a structural diagram showing the clamping seat in its vertical position.

[0030] Figure 7 This is a structural diagram of the gear and tooth block locking mechanism.

[0031] Figure 8 This is a structural diagram showing how the limiting block constrains the axial displacement of the tie rod.

[0032] Figure 9 This is a structural diagram showing the clamping seat in a horizontal position.

[0033] Figure 10 A structural diagram for setting up a protective net (for ease of drawing, only one side of the protective net is shown in the diagram).

[0034] In the picture:

[0035] 1. Support base; 11. Support column; 12. Connecting plate;

[0036] 2. Clamping seat; 20. Right angle steel; 21. First clamping arm; 22. Second clamping arm; 23. Grooved rib plate; 24. Sliding pin; 25. Slotted hole; 26. Screw;

[0037] 3. Supporting leg;

[0038] 4. Protective netting; 41. Mounting plate; 42. Inserting pole;

[0039] 5. Suspension rod; 51. U-shaped block;

[0040] 61. Gear; 62. Tooth block; 63. Tie rod; 64. Spring; 65. Limiting block; 66. Step section;

[0041] 100. Test plate;

[0042] A and B are corresponding enlarged view guide markers. Detailed Implementation

[0043] The invention will now be further described with reference to the accompanying drawings.

[0044] like Figure 1 As shown, the target fixing device that enables switching between penetration and explosion test modes includes a support base 1, a clamping seat 2, a support leg 3, a protective net 4, and a suspension rod 5. The components work together to achieve rapid switching between the two test conditions. The overall structure is stable and adaptable to the testing requirements of test plates 100 of different sizes.

[0045] The support base 1 is a rectangular frame structure, with its four sides made of spliced ​​I-beams. The high strength of the I-beams ensures the overall load-bearing capacity of the device. Two adjacent sides are movable sides to accommodate test plates 100 of different areas.

[0046] like Figure 2 A connecting plate 12 is welded and fixed to the end of the movable side. Several spaced mounting holes are pre-set in the corresponding I-beam channel. During adjustment, the bolts passing through the connecting plate 12 and the mounting holes are loosened, and the movable side is pushed to slide laterally along the frame to a suitable position. After that, the bolts are tightened again to complete the dimensional positioning of the support base 1 and form a rigid bearing boundary. Vertically arranged support columns 11 are welded to the four sides of the support base 1. These columns are used to support the test plate 100 and also provide an installation base for the hinge of the clamping seat 2.

[0047] like Figure 3 and Figure 4 The clamping seat 2 is rectangular, and its core components, the right-angle steel 20, the first clamping arm 21, and the second clamping arm 22, are all made of I-beams. The positioning and sliding functions are achieved by utilizing the channel structure of the I-beams.

[0048] One of the right-angle arms of the right-angle steel 20 is hinged to the support column 11 on the non-movable side of the support base 1 via a hinge. The rotation range at the hinge is 0-90°. When the angle is 0°, the clamping seat 2 remains horizontal with the support base 1 (e.g., Figure 9 When the angle is 90°, the clamping seat 2 is in a vertical position (e.g. Figure 6 This provides a basis for switching between the two test conditions.

[0049] Combination Figure 5 The first clamping arm 21 is connected to one side arm of the right angle steel 20. The upper and lower groove walls of the right angle steel 20 are provided with sliding grooves. The end of the first clamping arm 21 is provided with a sliding pin 24, which slides in the corresponding groove. At the same time, the groove rib plate 23 of the right angle steel 20 is provided with a slot hole 25. A screw 26 is fixed on the side wall of the sliding pin 24. The screw 26 passes through the slot hole 25 and is threaded to a nut. Loosening the nut allows the first clamping arm 21 to slide and rotate along the right angle steel 20, while tightening the nut fixes the position.

[0050] The connection method between the second clamping arm 22 and the first clamping arm 21 is the same as the above structure. The end of the second clamping arm 22 is also provided with a sliding pin 24, which slides in the I-shaped groove of the first clamping arm 21. The corresponding screw 26 passes through the slot 25 on the first clamping arm 21 and is locked by a nut. The end of the second clamping arm 22 away from the first clamping arm 21 is fixed to the other side of the right angle steel 20, so that the three together form a rectangular frame for clamping the test plate 100.

[0051] like Figure 6 The support leg 3 is hinged to the hinge lug of the clamping seat 2. It adopts a telescopic structure with a male and female rod. The male rod is inserted into the female rod, and the length is fixed by passing a locking bolt through the parallel through holes on the male rod and the female rod.

[0052] like Figure 7 and Figure 8 A gear and toothed block locking mechanism is provided between the support leg 3 and the clamping seat 2 to maintain the angle fixed when the support leg 3 is on the ground or in an upright state. The locking mechanism includes a gear 61, a toothed block 62, a pull rod 63 and a spring 64. The gear 61 is fixed on the support leg 3 and is coaxial with the hinge point of the support leg 3. The pull rod 63 passes through the clamping seat 2. The spring 64 is sleeved on the pull rod 63. The toothed block 62 is fixed to the end of the pull rod 63. Under the elastic force of the spring 64, the tooth surface of the toothed block 62 meshes with the gear 61 to achieve the initial locking of the angle of the support leg 3.

[0053] To prevent the toothed block 62 from separating from the gear 61 due to experimental impact vibration, a limiting block 65 is rotatably connected to the clamping seat 2. The pull rod 63 has a stepped portion 66, and the clamping seat 2 has a corresponding matching stepped hole. When the toothed block 62 meshes with the gear 61, the stepped portion 66 abuts against the stepped hole. Rotating the limiting block 65 (which is an eccentric block) axially limits the pull rod 63. Figure 8 As shown.

[0054] Combination Figure 9 and Figure 10 When conducting the explosion test, first adjust the movable side of the support base 1 according to the size of the test plate 100, loosen the corresponding bolts, push the movable side to the appropriate position, and then tighten the bolts through the corresponding row of mounting holes in the connecting plate 12 and the I-beam groove, so that the support base 1 forms a load-bearing frame adapted to the test plate 100. Then, keep the clamping seat 2 in a 0° horizontal state, so that it is directly supported on the support base 1, place the test plate 100 on the support column 11 and push it until it abuts against the I-beam groove of the right angle steel 20, loosen the nuts corresponding to the first clamping arm 21 and the second clamping arm 22, slide and rotate the first clamping arm 21 and the second clamping arm 22 so that the I-beam grooves of the two fit against the other two sides of the test plate 100, and then tighten the nuts to fix the test plate 100 around its perimeter.

[0055] Next, the support leg 3 is erected vertically and its vertical position is fixed by a gear and block locking mechanism. A suspension rod 5 is installed between the two support legs 3, with U-shaped blocks 51 welded to both ends of the suspension rod 5. The openings of the U-shaped blocks 51 are fitted into the support legs 3, and the support legs 3 are fixed by bolts threaded onto the sidewalls of the U-shaped blocks 51. Finally, the explosive is suspended on the suspension rod 5, and the explosion test is completed by remotely detonating the explosive. Figure 9 As shown.

[0056] When switching to the penetration test, after fixing the test plate 100 with the clamping seat 2, flip the clamping seat 2 upward to a 90-degree vertical position. Then, release the limiting block 65 corresponding to the support leg 3, pull the pull rod 63 to separate the toothed block 62 from the gear 61, adjust the extension length and support angle of the support leg 3 to make it support the ground and provide stable support for the clamping seat 2, release the pull rod 63, and under the action of the spring 64, the toothed block 62 and the gear 61 re-engage, and rotate the limiting block 65 to complete the axial limiting.

[0057] Next, protective nets 4 are installed on the two vertical sides of the clamping base 2. Mounting plates 41 are provided at the top and bottom ends of the protective nets 4, and insertion rods 42 are provided on the vertical sides of the clamping base 2. After aligning and inserting the insertion holes on the side walls of the mounting plates 41 with the insertion rods 42, they are fixed with screws. The protective nets 4 can effectively prevent projectiles from ricocheting or test debris from flying laterally, eliminating safety hazards. Figure 10 As shown, after completing the above operations, the penetration test can be carried out.

[0058] The above description is only a preferred embodiment of the present invention. It should be noted that those skilled in the art can make several improvements without departing from the principle of the present invention, and these improvements should also be considered within the scope of protection of the present invention.

Claims

1. A target fixing device capable of switching between penetration and explosion test modes, characterized in that: include: Support base (1), the support base (1) is a rectangular frame, the side of which can be adjusted laterally and locked; The clamping seat (2) is rectangular and includes a right angle steel (20), a first clamping arm (21) and a second clamping arm (22). The right angle steel (20) is hinged to the support base (1) so that the clamping seat (2) can flip between horizontal and vertical. The first clamping arm (21) and the second clamping arm (22) can slide and rotate to press or release the test plate (100). The support leg (3) is hinged to the clamping seat (2). When the clamping seat is in a horizontal state, the support leg is erected vertically to suspend explosives for explosion tests; when the clamping seat is in a vertical state, it is supported on the ground for penetration tests. The four sides of the support base (1) are all I-beams. The end of the sliding side of the support base (1) is welded with a connecting plate (12). The connecting plate (12) is locked with the row of mounting holes in the I-beam groove of the corresponding side by bolts. The right angle steel (20), the first clamping arm (21) and the second clamping arm (22) are all I-beams. The first clamping arm (21) can slide and rotate on one side of the right angle steel (20), and the second clamping arm (22) can slide and rotate on the first clamping arm (21). The second clamping arm (22) is fixed to the other side of the right angle steel (20). The right angle steel (20) and the first clamping arm (21) are both provided with slots (25). The ends of the first clamping arm (21) and the second clamping arm (22) are provided with sliding pins (24). The sliding pins (24) slide in the I-shaped grooves on the corresponding side of the clamping seat (2). A screw (26) is fixed on the sliding pin (24). The screw (26) passes through the corresponding slots (25) and a nut is threaded onto the screw (26).

2. The target fixing device as described in claim 1, capable of switching between penetration and explosion test modes, is characterized in that: The supporting leg (3) is a telescopic structure consisting of a mother and child rod.

3. The target fixing device as described in claim 1, capable of switching between penetration and explosion test modes, is characterized in that: A gear and tooth block locking mechanism is provided between the support leg (3) and the clamping seat (2) to maintain a fixed angle when the support leg (3) is on the ground or in an upright position.

4. The target fixing device as described in claim 3, capable of switching between penetration and explosion test modes, characterized in that: The gear and tooth block locking mechanism includes a gear (61), a tooth block (62), a pull rod (63), and a spring (64). The gear (61) is fixed on the support leg (3) and coaxial with the hinge point of the support leg (3). The pull rod (63) passes through the clamping seat (2). The spring (64) is sleeved on the pull rod (63). The tooth block (62) is fixed at the end of the pull rod (63). Under the action of the spring force, the tooth surface on the tooth block (62) meshes with the gear (61).

5. The target fixing device as described in claim 4, capable of switching between penetration and explosion test modes, characterized in that: A limiting block (65) is rotatably connected to the clamping seat (2). The limiting block (65) is used to axially limit the pull rod (63) after the gear (61) and the tooth block (62) mesh.

6. The target fixing device as described in claim 1, capable of switching between penetration and explosion test modes, characterized in that: It also includes a protective net (4), and when the clamping seat (2) is in a vertical state, the protective net (4) is inserted into both sides of it.

7. The target fixing device as described in claim 1, capable of switching between penetration and explosion test modes, characterized in that: It also includes a suspension rod (5), and the support leg (3) is fixed to the suspension rod (5) and the support leg (3) when the support leg (3) is in the upright state to form the explosive suspension point.

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