Anti-unhooking safety device for lifting hook

Abstract

The utility model provides an anti-unhooking safety device for a lifting hook, which comprises a lifting hook main body, a convex connecting block fixed on one side of the upper end of the lifting hook main body, a clamping structure used for movably sealing an opening of the lifting hook main body, an anti-dropping structure connected on the clamping structure, and a locking screw rod connected with the clamping structure, the clamping structure is rotationally connected to the protruding connecting block. The lifting hook main body comprises a fixing part, a roundabout part and a hooking part which are connected in sequence, the anti-falling structure is in separated contact with the inner side of the hooking part, and the locking screw is in separated contact with the inner side of the roundabout part. The hook anti-unhooking safety device provided by the utility model can reduce the potential safety hazard of the hook anti-unhooking device in the prior art.

Description

TECHNICAL FIELD

[0001] The utility model relates to hoisting equipment technical field, specifically is a kind of safety device of hook anti-unhooking. BACKGROUND

[0002] Hook is important part on hoisting equipment, mainly for through hoist sling to carry out the loading and unloading of object, hoisting etc., in order to prevent unnecessary damage and personal injury due to the hoist sling in hook unhooking, usually set up anti-unhooking device on hook.The existing hook anti-unhooking device, usually by torsional spring baffle or hand pull ring frame type, such anti-unhooking device is easily ineffective due to fatigue or the external force generated by hoist when hoisting, while increasing the security risk, and easily ineffective and increase cost to replace.

[0003] The present scheme proposes a kind of safety device of hook anti-unhooking, to solve the above technical problems. UTILITY MODEL CONTENTS

[0004] The utility model is to provide a kind of safety device of hook anti-unhooking, solve the technical problem of how to reduce the security risk of hook anti-unhooking device in prior art.

[0005] A kind of safety device of hook anti-unhooking, including hook main body, the protruding connecting block of one side fixed in the upper end of the hook main body, the clamping structure for being closed in the opening of the hook main body, the anti-unhooking structure connected on the clamping structure, with the clamping structure connection deadbolt, the clamping structure is rotatably connected on the protruding connecting block;

[0006] The hook main body includes fixed portion, detour portion and hooking portion connected in sequence, the anti-unhooking structure is separated from the inside of the hooking portion, and the deadbolt is separated from the inside of the detour portion.

[0007] The clamping structure includes groove main body, connecting shaft rod through the groove main body, the connecting shaft rod is perpendicularly rotatably connected on the protruding connecting block, and the groove main body is close to the hooking portion and is provided.

[0008] The anti-unhooking structure includes anti-unhooking rod, respectively vertically fixed in the both ends of the anti-unhooking rod embedded column one and embedded column two, the groove main body is provided with sliding slot one and sliding slot two, the embedded column one is clamped in the sliding slot one, and the embedded column two is clamped in the sliding slot two.

[0009] The groove main body is provided with deadbolt slot hole, and the deadbolt is connected in the deadbolt slot hole.

[0010] The connecting shaft rod is provided with torsional spring, and the both ends of the torsional spring are respectively fixed on two groove main bodies.

[0011] The connecting shaft rod is a round steel long rod, one end of which is a hexagonal blocking block, and the other end is provided with a thread and connected with a nut.

[0012] The first sliding groove is an inverted T-shaped sliding groove, and the second sliding groove is an I-shaped sliding groove.

[0013] The inner side of the groove-shaped body is provided with a detachment-preventing plate, two ends of the detachment-preventing plate are fixed on the embedding column one and the embedding column two respectively.

[0014] The utility model discloses the beneficial effect lies in the following points:

[0015] (1) the groove-shaped body is rotatably connected with the hook main body through the connecting shaft rod, so that the groove-shaped body and the hook main body have a free rotation angle, and the groove-shaped opening on the back side of the groove-shaped body can be clamped at the opening of the hook;

[0016] (2) the torsional spring is connected at the hook main body through the connecting shaft rod, one side of the torsional spring is in contact with the inner side surface of the detour part of the hook main body, and the other side is in contact with the inner side of the groove-shaped body, and the clamping of the groove-shaped opening at the opening of the hook is realized through the opening and closing force of the torsional spring itself;

[0017] (3) the two sides of the groove-shaped body are provided with detachment rods, the detachment rods are installed in the sliding grooves of the groove-shaped body, the position of the detachment rods in the sliding grooves can be changed, and one end of the detachment-preventing plate is abutted against the inner side of the detour part;

[0018] (4) the locking screw is locked in the groove hole through the two sides of the groove-shaped body, when the groove-shaped opening of the groove-shaped body is in contact with the hooking part, the locking screw is located at the inner side surface of the detour part to realize double locking, and when the groove-shaped opening of the groove-shaped body is away from the hooking part, the locking screw is located at the outer side surface of the detour part, can resist the elastic force of the torsional spring to make the groove-shaped body keep away from the opening of the hook. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structure schematic view of the safety device in the utility model.

[0020] Figure 2 It is a front view of the groove-shaped body in the utility model.

[0021] Figure 3 It is an internal structure schematic view of the groove-shaped body in the utility model.

[0022] Among them, the sign is: 1, hooking part;2, detour part;3, fixed part;4, protruding connecting block;5, connecting shaft rod;51, torsional spring;52, nut;6, groove-shaped body;7, sliding groove one;8, detachment rod;81, embedding column one;82, embedding column two;83, detachment-preventing plate;9, sliding groove two;10, locking groove hole. DETAILED DESCRIPTION

[0023] In order to make the technical features of the scheme clearer, the scheme will be described below through specific embodiments.

[0024] Referring to Figure 1 - Figure 3 A hook anti-unhooking safety device, comprising a hook body, a protruding connecting block 4 fixed on one side of the upper end of the hook body, a clamping structure used for movably closing at the opening of the hook body, an unhooking stopping structure connected to the clamping structure, and a locking screw connected to the clamping structure, the clamping structure being rotationally connected to the protruding connecting block 4.

[0025] The hook body comprises a fixed part 3, a detour part 2 and a hooking part 1 connected in sequence, the unhooking stopping structure being in separate contact with the inner side of the hooking part 1, and the locking screw being in separate contact with the inner side of the detour part 2.

[0026] The clamping structure comprises a slot-shaped body 6 and a connecting shaft 5 passing through the slot-shaped body 6, the connecting shaft 5 being vertically rotationally connected to the protruding connecting block 4, and the slot-shaped body 6 being arranged close to the hooking part 1.

[0027] The connecting shaft 5 is arranged close to the position facing the hooking part 1, and the center line of the connecting shaft 5 is horizontally arranged.

[0028] The slot-shaped body 6 is rotationally connected to the connecting shaft 5, so that the slot-shaped body 6 has a free rotation angle in the hook body, and the back side of the slot-shaped body 6 is provided with a slot-shaped opening for clamping the fixed part 3 and the detour part 2.

[0029] The unhooking stopping structure comprises an unhooking stopping rod 8 and embedded columns one 81 and two 82 vertically fixed at both ends of the unhooking stopping rod 8 respectively, the slot-shaped body 6 is provided with a sliding groove one 7 and a sliding groove two 9, the embedded column one 81 is clamped in the sliding groove one 7, and the embedded column two 82 is clamped in the sliding groove two 9.

[0030] The slot-shaped body 6 is provided with a locking slot hole 10, and the locking screw is connected in the locking slot hole 10.

[0031] The locking screw passes through the locking slot holes 10 on both sides of the slot-shaped body 6, when the slot-shaped opening of the slot-shaped body 6 is in contact with the hooking part 1, the locking screw is located at the inner side of the detour part 2 to realize double locking, and when the slot-shaped opening of the slot-shaped body 6 is away from the hooking part 1, the locking screw is located at the outer side of the detour part 2, which can resist the elastic force of the torsional spring 51, so that the slot-shaped body 6 keeps away from the hooking part 1.

[0032] The connecting shaft 5 is sleeved with a torsional spring 51, and both ends of the torsional spring 51 are fixed on the two slot-shaped bodies 6 respectively.

[0033] The torsional spring 51 is connected to the hook body through the connecting shaft 5, one side of the torsional spring 51 is in contact with the inner side of the detour part 2, and the other side is in contact with the inner side of the slot-shaped body 6, and the slot-shaped opening is clamped at the detour part 2 through the opening and closing force of the torsional spring 51 itself.

[0034] Torsion spring 51 one end against the inside of the slot-shaped body 6, the other end against the inside of the detour 2, torsion spring 51 by its own tension so that the slot-shaped body 6 in the natural state, so that the slot-shaped mouth and the detour 2 form a closed state, if by applying external force on the back of the slot-shaped body 6, by extruding torsion spring 51, so that the slot-shaped mouth and the inside of the detour 2 form an open state.

[0035] The connecting shaft 5 is a round steel long rod, one end is a hexagonal blocking block, and the other end is provided with a thread and connected with a nut.

[0036] The sliding groove one 7 is a inverted square type sliding groove, and the sliding groove two 9 is an I-shaped sliding groove.

[0037] The inside of the slot-shaped body 6 is provided with a stop plate 83, and the two ends of the stop plate 83 are fixed on the embedded column one 81 and the embedded column two 82 respectively.

[0038] The specific working process of the utility model is as follows:

[0039] The stop plate 83 is installed on the inside of the sliding groove one 7 and the sliding groove two 9 (i.e. the inside of the slot-shaped body 6) through the stop rod 8, one end of the stop rod 8 is movably installed on the I-shaped sliding groove, and the other end of the stop rod 8 is movably installed on the inverted square type sliding groove.

[0040] The embedded column one 81 and the embedded column two 82 are installed on the stop rod 8 on the two sides of the stop plate 83, and are located outside the two side surfaces of the slot-shaped body 6, which has two functions: one is to fix the stop rod 8 in the sliding groove (the sliding groove one 7 and the sliding groove two 9), and the other is to control the sliding of the stop rod 8 in the sliding groove.

[0041] When one end of the stop rod is installed on the inverted square type sliding groove through the embedded column two 82, the embedded column two 82 abuts against the inside of the detour 2, and the embedded column one 81 is installed on the lower side of the I-shaped sliding groove, so that when external force is applied to the back of the slot-shaped body 6, an open state cannot be formed, which is called safe closing, so as to prevent the lifting rope from being separated from the hooking part 1.

[0042] When one end of the stop rod is installed on the upper end of the inverted square type sliding groove through the embedded column two 82, the embedded column two 82 is away from the inside of the detour 2, and the embedded column one 81 is installed on the upper end of the I-shaped sliding groove, so that when external force is applied to the back of the slot-shaped body 6, an open state can be formed, and the lifting rope can be separated from the hooking part 1.

[0043] When the hook anti-unhooking safety device is in a safe closing state, the locking screw is installed in the locking groove 10, one side of the locking screw abuts against the lower side of the locking groove 10, and abuts against the inside of the detour 2, which is called double safe closing.

[0044] The technical features not described in the utility model can be realized by or using the prior art, and will not be described here again, of course, the above description is not a limitation of the utility model, and the utility model is not limited to the above examples, the changes, modifications, additions or replacements made by the ordinary skilled in the art within the essential scope of the utility model should also belong to the protection scope of the utility model.

Claims

1. A hook trip prevention safety device, characterized in that, The hook body includes a fixed part (3), a detour part (2) and a hooking part (1) connected in sequence, the anti-dropping structure is in separate contact with the inner side of the hooking part (1), and the locking screw is in separate contact with the inner side of the detour part (2). The hook body includes a fixed part (3), a detour part (2) and a hooking part (1) connected in sequence, the anti-dropping structure is in separate contact with the inner side of the hooking part (1), and the locking screw is in separate contact with the inner side of the detour part (2).

2. A safety device for a hook according to claim 1, characterised in that The connecting shaft rod (5) is vertically rotatably connected to the protruding connecting block (4), and the groove-shaped body (6) is arranged close to the hooking part (1).

3. A safety device for a hook according to claim 2, wherein The anti-dropping structure includes an anti-dropping rod (8) and embedded columns one (81) and two (82) vertically fixed at both ends of the anti-dropping rod (8), respectively, the groove-shaped body (6) is provided with a sliding groove one (7) and a sliding groove two (9), the embedded column one (81) is clamped in the sliding groove one (7), and the embedded column two (82) is clamped in the sliding groove two (9).

4. A safety device for a hook according to claim 3, wherein The groove-shaped body (6) is provided with a locking groove hole (10), and the locking screw is connected in the locking groove hole (10).

5. A safety device for a hook according to claim 2, wherein The connecting shaft rod (5) is provided with a torsion spring (51), and both ends of the torsion spring (51) are fixed on two groove-shaped bodies (6), respectively.

6. A safety hook unhooking device according to claim 2, wherein The connecting shaft rod (5) is a round steel long rod, one end of which is a hexagonal blocking block, and the other end is provided with a thread and connected with a nut (52).

7. A safety device for a hook according to claim 3, wherein The sliding groove one (7) is an inverted √ type sliding groove, and the sliding groove two (9) is an I type sliding groove.

8. A safety hook unhooking device according to claim 3, wherein The inner side of the groove-shaped body (6) is provided with an anti-dropping plate (83), and both ends of the anti-dropping plate (83) are fixed on the embedded column one (81) and the embedded column two (82), respectively.

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