An automatic locking fixture for assembling a round hook

Abstract

The present application belongs to the field of mechanical processing, and relates to an automatic locking clamp for assembling and detecting a shell hook. The automatic locking clamp comprises a support welding assembly, a hand wheel assembly, a lifting lug assembly and a side plate assembly. The support welding assembly comprises a support base and a support plate. A clamp body is arranged on the support assembly, and the clamp body comprises the hand wheel assembly and is used for lifting the lifting lug assembly upward. The lifting lug assembly comprises a horizontal plate, a lifting lug and a reinforcing plate, and is connected through a screw and a cylindrical pin. A screw rod is arranged on the horizontal plate. The screw rod is clamped in a T-shaped key of a sleeve in the hand wheel assembly. The side plate assembly is arranged on the support assembly, and the side plate assembly is integrally connected through a bolt and a cylindrical pin and comprises a left side plate, a right side plate, a left connecting block and a right connecting block. The side plate assembly is used for mounting a certain shell hook product to be detected. The present application is designed for automatic locking of a certain shell hook, flexibility of detection of the shell hook, no jamming phenomenon and feasibility of automatic locking of the shell hook.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of mechanical processing, and relates to a flexible locking fixture for assembling and testing a certain ammunition hook product, in particular to an automatic locking fixture for assembling and testing an ammunition hook. BACKGROUND

[0002] In the field of mechanical processing, after the assembly of product parts is completed, the hanging distance of the hanging lug of the hanging object is a certain value, and when the hanging lug is pushed up to the nose-shaped arm of the hook, the hook should be able to automatically lock. This automatic locking fixture is designed to detect the feasibility of automatic locking of the hook. In particular, the hook is installed in the side plate assembly simulating the hanging beam, and the corresponding mounting hole positions of the side plate assembly and the hook need to have good consistency and coordination, that is, the precision requirement of the size relationship between certain parts of the product and other parts is high. If the size requirement of consistency or coordination of a certain point is higher, the control of the size tolerance during assembly is more stringent. In addition, the installation of the lug assembly in the lug also has a high positioning accuracy requirement, that is, when the hand wheel is rotated, the lug assembly must be vertically upward, and the corresponding matching part of the lug assembly is a square hole matched with a square column, so that the lug assembly cannot rotate. This method ensures that the lug assembly is accurately hung with the hook, and ensures the size coordination and consistency between the product parts. This method meets the interchangeability of the hook product, the flexible movement of the moving parts of the hook, and the phenomenon of no jamming. SUMMARY

[0003] OBJECTIVE

[0004] To solve the problem of detecting the interchangeability of the hook product, the flexible movement of the moving parts of the hook, and the phenomenon of no jamming, this automatic locking fixture is designed to enable the hook to automatically lock.

[0005] TECHNICAL SOLUTION

[0006] In order to achieve the above-mentioned object of the application, the technical scheme adopted by the present application is as follows:

[0007] An automatic locking fixture for assembling and testing an ammunition hook, comprising a support welding assembly 1, a fixture main body, and a side plate assembly 4; the support welding assembly 1 is composed of a support base and a support plate, and the support plate is welded and fixed on the support base; the fixture main body is installed on the support welding assembly, and the fixture main body comprises a hand wheel assembly 2 and a lug assembly 3, the lug assembly 3 is installed in the sleeve of the hand wheel assembly 2 through the screw rod 5 and the nut in the hand wheel assembly 2 and forms an integral whole, and is used for pushing the suspended simulation object; the side plate assembly 4 comprises a left side plate, a right side plate, a left connecting block, a right connecting block, a bolt, a cylindrical pin, and a positioning pin for positioning product parts; after the left side plate and the right side plate are integrally connected with the left connecting block and the right connecting block by the bolt, they are fixed on the support base by the bolt.

[0008] The sleeve in the handwheel assembly 2 is mounted on the support plate of the bracket welding assembly 1 by four bolts, and the central axis of the handwheel assembly 2 coincides with the central axis of the bracket base.

[0009] The handwheel assembly 2 consists of a handwheel, nut A, bearing, sleeve, bolt A, and T-key. The T-key is installed and fixed inside the sleeve to position the screw 5. The T-key is engaged in the keyway of the screw 5 to ensure that the lifting lug assembly moves vertically upward with the screw 5.

[0010] The lifting lug assembly 3 consists of a lifting lug, a horizontal plate, bolt B, a cylindrical pin, and a reinforcing plate; by rotating the handwheel, the suspension simulation object (lifting lug assembly 3) is pushed into the product hook inside the side plate assembly 4, ensuring that the central axis of the lifting lug assembly 3 coincides with the central axis of the side plate assembly 4.

[0011] The two lifting lugs of the lifting lug assembly 3 should be perpendicular to the horizontal plate, with a limit deviation within ±0.5°; the lifting lugs should be in the plane of symmetry, with a limit deviation within ±0.5°, and the height difference between the two lifting lugs should not exceed 0.2mm.

[0012] The horizontal plate of the lifting lug assembly 3 and the screw 5 are fitted with square holes and square columns, so that the lifting lug assembly will not rotate. The central axis of the lifting lug assembly 3 coincides with the central axis of the side plate assembly 4.

[0013] The support base is welded from channel steel GB707-12.6.

[0014] The central axis of the support plate coincides with the central axis of the bracket base.

[0015] Advantages of the present invention

[0016] The advantages of this invention are:

[0017] This invention relates to a device for testing the automatic locking flexibility of a bomb hook product. It ensures the hook's hook-like arm does not lock when the suspended object's lug is pushed upwards, or that the hook remains flexible when the suspended object is attached to the nose-like arm. This guarantees that the suspended object is locked during flight and cannot be easily unlocked, while allowing for flexible release. The bomb hook is mounted on the side panel assembly using positioning pins, with the distance between the two hooks matching the distance between the two lugs. This invention has a simple and practical structure, is easy to operate, and can improve assembly accuracy during product processing, increasing product qualification rate and work efficiency. Attached Figure Description

[0018] Figure 1 A front view of an automatic locking fixture for assembly inspection.

[0019] Figure 2 Left view of an automatic locking fixture for assembly inspection

[0020] Figure 3 Structure diagram A of hand wheel assembly

[0021] Figure 4 Structure diagram B of hand wheel assembly

[0022] Figure 5 Structure diagram of lifting lug assembly

[0023] Wherein: 1- bracket welding assembly, 2- hand wheel assembly, 3- lifting lug assembly, 4- side plate assembly, 5- screw rod. DETAILED DESCRIPTION

[0024] The specific embodiments of the present application are described in detail in combination with the summary of the invention and the drawings.

[0025] The automatic locking clamp (as shown in Figure 1 ) comprises a bracket welding assembly 1, a clamp body, and a side plate assembly 4; the bracket welding assembly 1 is composed of a bracket base and a support plate, and the support plate is welded and fixed on the bracket base; the clamp body is installed on the bracket welding assembly (as shown in Figure 2 ), and the clamp body comprises a hand wheel assembly 2 and a lifting lug assembly 3; the lifting lug assembly 3 (as shown in Figure 5 ) is installed in the sleeve of the hand wheel assembly 2 (as shown in Figure 3 ) and forms an integral whole through the screw rod 5 and the nut in the hand wheel assembly 2, and is used to push the suspended simulation object; the side plate assembly 4 comprises a left side plate, a right side plate, a left connecting block, a right connecting block, a bolt, a cylindrical pin, and a positioning pin used for positioning a product part; after the left side plate and the right side plate are integrally connected with the left connecting block and the right connecting block by the bolt, the left side plate and the right side plate are fixed on the bracket base by the bolt. It is ensured that the nose-shaped arm of the bomb hook is not locked or the flexibility of the hook of the bomb hook when the suspended object lifting lug is pushed upward or the suspended object is hung on the nose-shaped arm hook of the bomb hook. It is ensured that the suspended object is locked when the aircraft is flying, and the lock can be opened flexibly when the bomb is dropped. The bomb hook is installed on the side plate assembly by using the positioning pin, the distance between the two hooks is consistent with the distance between the two lifting lugs,

[0026] The sleeve in the hand wheel assembly 2 (as shown in Figure 4 ) is installed on the support plate of the bracket welding assembly 1 by four bolts, and the central axis of the hand wheel assembly 2 coincides with the central axis of the bracket base. The coincidence of the central axes ensures that the shaft center is consistent during the movement of the mechanism, and no deviation or disengagement failure occurs.

[0027] The hand wheel assembly 2 is composed of a hand wheel, a nut A, a bearing, a sleeve, a bolt A and a T-shaped key. The T-shaped key is fixed in the sleeve and used for positioning the screw rod 5. The T-shaped key is clamped in the key groove of the screw rod 5 to ensure that the lifting lug assembly 3 and the screw rod 5 run vertically upward. The T-shaped key fixes and positions the screw rod 5 and is clamped in the key groove of the screw rod 5, so that the lifting lug assembly 3 and the screw rod 5 run vertically without position deviation and the like.

[0028] The lifting lug assembly 3 is composed of a lifting lug, a cross plate, a bolt B, a cylindrical pin and a reinforcing plate. The lifting lug assembly 3 is rotated to push the suspended simulation object (the lifting lug assembly 3) into the product hanging hook in the side plate assembly 4 to ensure that the central axis of the lifting lug assembly 3 coincides with the central axis of the side plate assembly 4. The coinciding central axes ensure that the movement directions are consistent.

[0029] The two lifting lugs of the lifting lug assembly 3 should be perpendicular to the cross plate, and the limit deviation is within ±0.5°. The lifting lugs should be in the symmetric plane, and the limit deviation is within ±0.5°. The height difference between the two lifting lugs is not greater than 0.2 mm. If the limit deviation of the lifting lugs is too large or the height difference is large, the lifting lug assembly 3 and the cross plate cannot reach the vertical angle, the hoisting angle difference is large, and the assembly is affected. If the height difference between the beam lifting lugs is too large, the balance of the hoisted object is also insufficient.

[0030] The cross plate in the lifting lug assembly 3 is in the form of a square hole and a square column in cooperation with the screw rod 5, so that the lifting lug assembly cannot rotate, and the central axis of the lifting lug assembly 3 coincides with the central axis of the side plate assembly 4. The fixing form of the square hole and the square column can better prevent rotation, and other polygonal structure forms can be used instead. The more the angles are, the better the stability is. However, the square can meet the basic use requirements, the central axes coincide, and the axial lines are consistent to prevent deviation.

[0031] The support base is made of a channel steel GB707-12.6 welded (the channel steel is a long strip steel with a groove-shaped cross section, belongs to a carbon structural steel or a low alloy steel blank with a carbon content of not more than 0.25%, and is a complex end face type steel material).

[0032] The central axis of the support plate coincides with the central axis of the support base, and the reason for the coincidence of the central axes is the same as above.

Claims

1. An automatic locking fixture for assembling a round detection hook, characterized in that: The bracket welding assembly, the clamp body, and the side plate assembly are provided. The bracket welding assembly is composed of a bracket base and a support plate. The support plate is welded and fixed on the bracket base. The clamp body is installed on the bracket welding assembly. The clamp body includes a hand wheel assembly and an ear assembly. The ear assembly is installed in the sleeve of the hand wheel assembly through the screw and the nut and forms an integral whole, which is used to push the suspended simulation object. The side plate assembly includes a left side plate, a right side plate, a left connecting block, a right connecting block, a bolt, a cylindrical pin, and a positioning pin. The left side plate and the right side plate are integrally connected with the left connecting block and the right connecting block through the bolt and are fixed on the bracket base through the bolt. The sleeve of the hand wheel assembly is installed on the support plate of the bracket welding assembly through four bolts. The central axis of the hand wheel assembly coincides with the central axis of the bracket base. The ear assembly is composed of an ear, a horizontal plate, a bolt B, a cylindrical pin, and a reinforcing plate. The ear assembly is pushed by rotating the hand wheel and is hung in the product hanging hook of the side plate assembly to ensure that the central axis of the ear assembly coincides with the central axis of the side plate assembly.

2. An automatic locking fixture for assembling a round detection hook according to claim 1, characterized in that: The hand wheel assembly is composed of a hand wheel, a nut A, a bearing, a sleeve, a bolt A, and a T-shaped key. The T-shaped key is installed and fixed in the sleeve and is used to position the screw. The T-shaped key is clamped in the key groove of the screw to ensure that the ear assembly and the screw are vertically upward.

3. An automatic locking fixture for assembling a round detection hook according to claim 2, characterized in that: The two ears of the ear assembly are perpendicular to the horizontal plate. The limit deviation is within ±0.5°. The ears are in the symmetry plane. The limit deviation is within ±0.5°. The height difference between the two ears is not greater than 0.2 mm.

4. An automatic locking fixture for assembling a round detection hook according to claim 3, characterized in that: The middle axis of the ear assembly coincides with the middle axis of the side plate assembly.

5. An automatic locking fixture for assembling a round detection hook according to claim 1, characterized in that: The bracket base is welded by the channel steel GB707-12.

6.

6. An automatic locking fixture for assembling a round detection hook according to claim 1, characterized in that: The middle axis of the support plate coincides with the middle axis of the bracket base.

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