A vibration test fixture

Abstract

The application discloses a vibration test clamp, which comprises a base, a cover plate and two side plates arranged at intervals, the cover plate is arranged above the side plates, and opposite sides of the cover plate are connected with the two side plates respectively; and a hanging seat is installed on the cover plate, and a hoisting assembly for hoisting a guided bomb and a stopper assembly for preventing the guided bomb from rotating are installed on the hanging seat. According to the vibration test clamp, the guided bomb can be stably fixed on a vibration table, and the reliability of the experiment is higher; the error generated in the experiment process can be reduced, and the experiment progress is ensured; and the vibration test clamp has the advantages of simple structure, convenient operation and quick clamping and hoisting of the guided steel bomb.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of guided missile test device, in particular to a vibration test fixture. BACKGROUND

[0002] The vibration test is an indispensable experiment in the development process of guided missile, and its purpose is to verify the adaptability and durability of guided missile under vibration environment through simulation flight process test, so as to fully master the stress response characteristics of the product and its weak link. Therefore, the vibration test fixture is an essential fixture. The vibration test fixture of the guided missile has the problems of complex structure, inconvenient use and the like. SUMMARY

[0003] The present application aims to solve at least one of the problems in the prior art. To this end, the present application provides a vibration test fixture, which is simple in structure, convenient to operate, and can quickly realize the clamping and lifting of the guided missile.

[0004] According to the vibration test fixture of the present application, the bottom seat and the hanging seat are provided to realize the lifting and test of the guided missile, which is simple in structure and convenient to use. Compared with the existing vibration test fixture, the test fixture of the present application can greatly reduce the production cost. The hanging seat of the present application includes a lifting assembly and a stop assembly, which can stably fix the guided missile on the vibration table, so that the experimental reliability is higher. The test fixture of the present application can reduce the error generated in the experimental process and ensure the experimental progress.

[0005] According to the vibration test fixture of the present application, the bottom seat and the hanging seat are provided to realize the lifting and test of the guided missile, which is simple in structure and convenient to use. Compared with the existing vibration test fixture, the test fixture of the present application can greatly reduce the production cost. The hanging seat of the present application includes a lifting assembly and a stop assembly, which can stably fix the guided missile on the vibration table, so that the experimental reliability is higher. The test fixture of the present application can reduce the error generated in the experimental process and ensure the experimental progress.

[0006] The first installation groove and the second installation hole are provided in the hanging seat, the lifting assembly is movably installed in the first installation groove, and the stop assembly is movably installed in the second installation hole.

[0007] According to some embodiments of the present application, the hanging seat is provided with a first installation groove and a second installation hole, the lifting assembly is movably installed in the first installation groove, and the stop assembly is movably installed in the second installation hole.

[0008] According to some embodiments of the present application, the hanging seat is further provided with a first through hole and a second through hole penetrating through the groove walls on both sides of the first installation groove, the first through hole is provided with a rotating shaft, and the second through hole is provided with a locking pin; the lifting assembly includes a hook, the hook is installed in the first installation groove, and is provided with a lower through hole for the rotating shaft to pass through and an upper through hole for the locking pin to pass through; the hook can rotate around the rotating shaft, and the locking pin can cooperate with the rotating shaft to fix the position of the hook.

[0009] According to some embodiments of the present application, the first installation groove is further communicated with a third installation hole, and the lifting assembly further comprises a spring seat and a telescopic spring, the spring seat is installed in the third installation hole, and the telescopic spring is connected with the hook and the spring seat at two ends respectively.

[0010] According to some embodiments of the present application, the hook is provided with a hook groove which is open to one side at the lower part of the hook, and the hook is provided with a hook part for connecting the telescopic spring at the other side of the hook.

[0011] According to some embodiments of the present application, one end of the bottom of the first installation groove is provided with a protruding stop block which can abut against one side of the top of the hook for positioning the rotation end point of the hook.

[0012] According to some embodiments of the present application, the stop assembly comprises an adjusting bolt and a stopper which is ball-jointed with one end of the adjusting bolt, the second installation hole comprises a threaded section and a smooth section, the adjusting bolt is threadedly connected with the threaded section, and one end of the stopper is slidably arranged in the smooth section.

[0013] According to some embodiments of the present application, the bottom of the second installation hole is provided with a limiting groove which is communicated with the bottom of the second installation hole, and the limiting groove is used for limiting the circumferential rotation of the stopper.

[0014] According to some embodiments of the present application, the outer periphery of the adjusting bolt is threadedly connected with a locking nut which is used for locking the stop assembly.

[0015] According to some embodiments of the present application, the hook seat comprises a top plate and two box bodies, the top plate is connected with the cover plate at the lower surface of the cover plate, the two box bodies are both installed on the top plate and are arranged in a spaced manner, and the lifting assembly and the stop assembly are both installed on the box bodies.

[0016] Additional aspects and advantages of the present application will be given in part in the following description, become apparent from the following description, or be understood through practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0017] The present application will be further described below in conjunction with the drawings and embodiments, in which:

[0018] Figure 1 FIG. 1 is a structural schematic view of an embodiment of the present application;

[0019] Figure 2 FIG. 2 is a sectional view of an embodiment of the present application;

[0020] Figure 3 FIG. 3 is an enlarged view of A in FIG. 1; Figure 2

[0021] Figure 4 FIG. 4 is a sectional view of another embodiment of the present application;​Figure 2 A sectional view along the direction of B-B;

[0022] Figure 5 For Figure 4 An enlarged view at C;

[0023] Figure 6 A structural exploded view of the stop assembly of the embodiment of the present application.

[0024] Reference Signs:

[0025] Base 100, side plate 110, cover plate 120;

[0026] Hanging seat 200, box body 210, first mounting groove 220, abutting block 221, second mounting hole 230, rotating shaft 240, locking pin 250, third mounting hole 260, top plate 270, limiting groove 280;

[0027] Hoisting assembly 300, hook 310, upper through hole 311, lower through hole 312, hook groove 313, hook portion 314, spring seat 320, spring 321;

[0028] Stop assembly 400, adjusting bolt 410, stopper 420, locking nut 430. DETAILED DESCRIPTION

[0029] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0030] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, etc. is based on the orientation or position relationship shown in the drawings, and is only for the purpose of facilitating the description of the present application and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0031] In the description of the present application, the plural refers to two or more. If there is a description of first, second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0032] In the description of the present application, unless otherwise explicitly limited, the words such as setting, mounting, connecting, etc. should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0033] Referring to Figures 1 to 6 , a vibration test fixture of the embodiment of the present application comprises a base 100 and a hanging seat 200, the base 100 comprises a cover plate 120 and two side plates 110 arranged at intervals, the cover plate 120 is arranged above the side plates 110, and opposite sides of the cover plate 120 are connected with the two side plates 110 respectively; specifically, the side plates 110 are each provided with a reinforcing rib, the cover plate 120 is also provided with a reinforcing rib, and a space for testing a missile is formed between the opposite side of the two side plates 110 and the lower surface of the cover plate 120. The two sides of the cover plate 120 are connected with the top of the two side plates 110 by bolts respectively.

[0034] The hanging seat 200 is installed on the cover plate 120, and a hoisting assembly 300 for hoisting the missile and a stop assembly 400 for preventing the missile from rotating are installed. The hoisting assembly 300 is used for hoisting the missile, and the stop assembly 400 is used for limiting the missile to prevent the missile from rotating after being hoisted. Referring to Figure 2 , Figure 3 , the hanging seat 200 comprises a top plate 270 and two box bodies 210, the top plate 270 is connected with the cover plate 120 at the lower surface of the cover plate 120, and the two box bodies 210 are each installed on the top plate 270 and arranged at intervals; the hoisting assembly 300 and the stop assembly 400 are each installed on the box body 210. The top plate 270 is connected with the lower surface of the cover plate 120 by bolts, the box body 210 is connected with the top plate 270 by bolts, and the two box bodies 210 are arranged at intervals along the length direction of the top plate 270.

[0035] In some embodiments of the present application, the hanging seat 200 is provided with a first installation slot 220 and a second installation hole 230, the hoisting assembly 300 is movably installed in the first installation slot 220, and the stop assembly 400 is movably installed in the second installation hole 230. Specifically, referring to Figure 2 , Figure 3 , the first installation slot 220 and the second installation hole 230 are each arranged on the box body 210 and are arranged at two ends of the length direction of the box body 210 respectively.

[0036] In some specific embodiments of the present application, the hanging seat 200 is further provided with a first through hole and a second through hole penetrating through the slot walls of the two sides of the first installation slot 220, the first through hole is provided with a rotating shaft 240, and the second through hole is provided with a locking pin 250; the hoisting assembly 300 comprises a hook 310, the hook 310 is installed in the first installation slot 220 and is provided with a lower through hole 312 for the rotating shaft 240 to pass through and an upper through hole 311 for the locking pin 250 to pass through; the hook 310 can rotate around the rotating shaft 240, and the locking pin 250 can cooperate with the rotating shaft 240 to fix the position of the hook 310. Referring to Figure 2 , Figure 3As shown, the first through hole is arranged below the second through hole, and after the lower through hole 312 is aligned with the first through hole, the rotating shaft 240 passes through the box 210 and the hook 310 to connect the two, and the hook 310 can rotate around the rotating shaft 240.

[0037] It should be noted that the rotating shaft 240 is always arranged in the first through hole in normal use. When the hook 310 is rotated to align the upper through hole 311 with the second through hole, the locking pin 250 can be inserted. Since the locking pin 250 and the rotating shaft 240 are arranged in an upper and lower manner, after the locking pin 250 is inserted, the position of the hook 310 is fixed and can only be kept in a vertical state; the hook 310 kept in the vertical state is also the state when the missile is lifted and launched.

[0038] In some embodiments of the present application, the first mounting groove 220 is also communicated with a third mounting hole 260, and the lifting assembly 300 further comprises a spring seat 320 and a telescopic spring 321, the spring seat 320 is mounted in the third mounting hole 260, and the two ends of the telescopic spring 321 are connected with the hook 310 and the spring seat 320 respectively. Specifically, referring to Figure 3 As shown, the lower part of the hook 310 is provided with a hook groove 313 which is open to one side, and the other side of the hook 310 is provided with a hook part 314 for connecting the telescopic spring 321. For example, the opening of the hook groove 313 is towards the side of the stop component, and the hook part 314 is arranged on the side of the hook 310 away from the stop component. The third mounting hole 260 is communicated with the first mounting groove 220 and the outside in the vertical direction, the spring seat 320 is mounted in the third mounting hole 260, for example, threaded connection; the two ends of the telescopic spring 321 are connected with the end part of the spring seat 320 and the hook part 314 respectively.

[0039] In some embodiments of the present application, one end of the bottom of the first mounting groove 220 is provided with a protruding abutting block 221, the abutting block 221 can abut against one side of the top of the hook 310, and is used for positioning the rotating end point of the hook 310. Specifically, the third mounting hole 260 is arranged in the abutting block 221, which can save space. The top of the hook 310 away from the opening of the hook groove 313 is provided with a protrusion extending towards the abutting block 221, and when the protrusion abuts against the abutting block 221, the hook 310 is just in the vertical state.

[0040] Referring to Figure 3 As shown, the upper groove wall of the hook groove 313 extends to one side with a length greater than the lower groove wall. The use steps of the hook 310 are as follows:

[0041] 1. Before the locking pin 250 is inserted, due to the action of the telescopic spring 321, the telescopic spring 321 will pull the hook 310 to rotate counterclockwise around the rotating shaft 240, and the clockwise rotation is only for the purpose of description. Figure 4 to 6 For reference, so that the opening of the hook groove 313 gradually moves downward;

[0042] 2. The test fixture is lowered, and the hook 310 is lowered; when the upper groove wall of the hook 310 abuts against the missile and continues to be lowered, the missile pushes the hook 310 to rotate clockwise to the position where the protrusion on the top of the hook 310 abuts against the abutting block 221, so that the telescopic spring 321 is in the stretched state;

[0043] 3. The locking pin 250 is inserted into the box 210 to fix the hook 310 in the vertical position;

[0044] 4. The lifting fixture is raised to lift the missile; the stop assembly 400 is adjusted to limit the missile.

[0045] In some embodiments of the present application, the stop assembly 400 comprises an adjusting bolt 410 and a stopper 420 which is ball-jointed with one end of the adjusting bolt 410; the second mounting hole 230 comprises a threaded section and a smooth section, the adjusting bolt 410 is threadedly connected with the threaded section, and the stopper 420 is slidably arranged in the smooth section. Specifically, as shown in Figure 5 the stopper 420 has a "V" shaped end and the other end is ball-jointed with the end of the adjusting bolt 410, and the V shaped end is used to abut against the missile to limit the rotation of the missile.

[0046] The upper part of the second mounting hole 230 is a threaded section, the outer periphery of the adjusting bolt 410 is provided with external threads which are threadedly connected with the threaded section of the upper part of the second mounting hole 230. When the adjusting bolt 410 is raised or lowered relative to the second mounting hole 230, the stopper 420 is synchronously raised or lowered, and since the adjusting bolt 410 is ball-jointed with the stopper 420, the rotation of the adjusting bolt 410 will not cause the rotation of the stopper 420. In addition, the ball joint between the adjusting bolt 410 and the stopper 420 can facilitate the fine adjustment of the stopper 420, so that the missile can be abutted against even if the stopper 420 is slightly inclined.

[0047] In some embodiments of the present application, the outer periphery of the adjusting bolt 410 is threadedly connected with a locking nut 430 which is used to lock the stop assembly 400. As shown in Figure 6 , ​ the locking nut 430 can abut against the upper end surface of the second mounting hole 230; after the adjusting bolt 410 is rotated to the position where the bottom of the stopper 420 abuts against the missile, the locking nut 430 is tightened, so that the action of the adjusting bolt 410 can be effectively avoided, the missile can be stably fixed on the vibration table, and the reliability of the experiment is higher; the error generated during the experiment can be reduced, and the progress of the experiment can be ensured.

[0048] In some embodiments of the present application, the second mounting hole 230 is provided with a limiting groove 280 in communication therewith, and the limiting groove 280 is used to limit the circumferential rotation of the stopper 420. Specifically, the limiting groove 280 is a rectangular groove, and the second mounting hole 230 is arranged at the groove bottom of the rectangular groove. When the one end portion of the stopper 420 away from the adjusting bolt 410 is embedded into the limiting groove 280, the stopper 420 cannot rotate, but can only be lifted and lowered; meanwhile, the limiting groove 280 also realizes the guidance to the stopper 420.

[0049] The vibration test fixture according to the embodiment of the present application can realize the hoisting and test of the guided navigation bomb by arranging the base 100 and the hanging seat 200, and has simple structure and convenient use, and compared with the existing vibration test fixture, the test fixture of the present application can greatly reduce the production cost.

[0050] The embodiments of the present application are described in detail above in combination with the drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge range of the ordinary skill in the art without departing from the purpose of the present application.

Claims

1. A vibration testing fixture, characterized in that, include: The base (100) includes a cover plate (120) and two spaced-apart side plates (110), the cover plate (120) being disposed above the side plates (110), and the opposite sides being connected to the two side plates (110) respectively; A mounting bracket (200) is installed on the cover plate (120) and is equipped with a hoisting assembly (300) for lifting the bomb and a stop assembly (400) for preventing the bomb from rotating. The mounting bracket (200) includes two housings (210). The mounting bracket (200) is provided with a first mounting groove (220) and a second mounting hole (230). The first mounting groove (220) and the second mounting hole (230) are respectively located at both ends of the length direction of the housing (210). The hoisting assembly (300) is movably installed in the first mounting groove (220), and the stop assembly (400) is movably inserted through the second mounting hole (230). The mounting bracket (200) is also provided with a first through hole and a second through hole that penetrate the two sides of the first mounting groove (220). The first through hole is provided with a rotating shaft (240), and the second through hole is provided with a locking pin (250). The hoisting assembly (300) includes a hook (310). The hook (310) is installed in the first mounting groove (220) and is provided with a lower through hole (312) for the rotating shaft (240) to pass through and an upper through hole (311) for the locking pin (250) to pass through. The hook (310) can rotate around the rotating shaft (240), and the locking pin (250) can cooperate with the rotating shaft (240) to fix the position of the hook (310). The hook (310) has a hook groove (313) with an opening to one side at the lower part. The hook groove (313) faces the stop assembly (400). The upper groove wall of the hook groove (313) extends towards the stop assembly (400) for a longer length than the lower groove wall extends towards the stop assembly (400). The hook (310) has a hook portion (314) on the side facing away from the stop assembly (400); the first mounting groove (220) is also connected to a third mounting hole (260); the hoisting assembly (300) also includes a spring seat (320) and a telescopic spring (321); the spring seat (320) is installed in the third mounting hole (260); and the two ends of the telescopic spring (321) are respectively connected to the spring seat (320) and the hook portion (314); The stop assembly (400) includes an adjusting bolt (410) and a stop member (420) ball-jointed with one end of the adjusting bolt (410); the second mounting hole (230) includes a threaded section and a smooth section, the adjusting bolt (410) is threadedly connected to the threaded section, and one end of the stop member (420) is slidably inserted through the smooth section; the bottom of the second mounting hole (230) is provided with a limiting groove (280) communicating with it, and the limiting groove (280) is used to restrict the circumferential rotation of the stop member (420).

2. The vibration testing fixture according to claim 1, characterized in that: The first mounting groove (220) has a protruding abutment (221) at one end of the groove bottom. The abutment (221) can abut against one side of the top of the hook (310) to position the hook (310) at the rotation endpoint.

3. The vibration testing fixture according to claim 1, characterized in that: The adjusting bolt (410) is threaded with a locking nut (430) for locking the stop assembly (400).

4. The vibration testing fixture according to claim 1, characterized in that: The mounting bracket (200) also includes a top plate (270), which is connected to the cover plate (120) on the lower surface of the cover plate (120). The two boxes (210) are installed on the top plate (270) and spaced apart. The hoisting assembly (300) and the stop assembly (400) are both installed on the box (210).

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