Novel lifting hook fixing and locking device

Abstract

A novel lifting hook fixing and locking device comprises a first locking frame and a second locking frame, and the first locking frame and the second locking frame are fixed to a cantilever crane above a lifting hook side by side at intervals. The first locking frame and the second locking frame are the same in structure and each comprise a locking seat, a vertical notch is formed in the lower end of each locking seat, and a lifting hook pin shaft on the lifting hook penetrates through the notches and is limited through a limiting mechanism. The novel lifting hook fixing and locking device provided by the utility model can effectively solve the problems of long lifting and falling time and low working efficiency of an offshore wind power installation platform crane.

Description

TECHNICAL FIELD

[0001] The utility model relates to a locking device, in particular to a novel lifting hook fixing locking device. BACKGROUND

[0002] With offshore wind turbine capacity bigger and bigger, hub center height higher and higher, offshore wind power installation platform crane lifting height unceasingly climbs, the arm support is also longer and longer, leading to crane arm support hook head part exceeding offshore wind power installation platform ship body, the arm support shelf arranged in the bow of the platform is difficult to satisfy the vertical lifting of the crane hook.

[0003] At present, the crane hook head is generally placed in the hook box in the bow of the platform ship body, due to the fact that the hook box and the hook head are not on the same vertical line, thus the crane hook lifting and hook collecting are slow, the fourth generation offshore wind power installation platform hook collecting in the market is 2-4 hours, the crane lifting time is too long, which affects the offshore wind turbine installation efficiency. In addition, when the hook head is placed in the hook box, the winding steel wire rope of the hook head is in an oblique angle state, not in a vertical state, thus leading to the loose and falling of the hook steel wire rope, and even the situation that the steel wire rope falls into the water, resulting in disorderly rope and crane use failure. SUMMARY

[0004] The utility model wants to solve the technical problem to provide a novel lifting hook fixing locking device, can effectively solve the long time of offshore wind power installation platform crane hook lifting and falling, low work efficiency problem, no longer uses the traditional hook box design, discards the traditional hook box use disadvantage, avoids the situation that the disorderly rope of the steel wire rope occurs after the lifting hook enters the hook box, not only greatly promotes the field construction work efficiency, and prolongs the service life of the steel wire rope.

[0005] To solve the above technical problems, the utility model adopts the technical scheme of:

[0006] A novel lifting hook fixing locking device, first locking frame, second locking frame, first locking frame, second locking frame are fixed on the arm support above the lifting hook in parallel and interval, first locking frame, second locking frame structure is same, all includes locking seat, the lower end of locking seat is opened vertical slot, the lifting hook pin shaft on the lifting hook passes through the slot and is limited by the limiting mechanism.

[0007] The limiting mechanism includes a limiting slot, the limiting slot is horizontally arranged and located on the left and right sides of the slot, and a sliding limiting block is slidably arranged in the limiting slot.

[0008] The lower bottom surface of the limiting slot is provided with a wear-resistant pad plate.

[0009] The pad plate is made of bronze.

[0010] The sliding limiting block is provided with a groove, and the groove limits the hook pin shaft when the sliding limiting block extends.

[0011] The lower end of the notch is a horn-shaped guide groove, and the opening of the lower end of the guide groove is larger than that of the upper end.

[0012] The width of the notch matches the width of the hook pin shaft.

[0013] The novel hook fixing and locking device has the following technical effects:

[0014] 1) The hook pin shaft is installed on the hook, the first locking frame and the second locking frame are fixed on the arm frame, the first locking frame and the second locking frame are provided with notches and limiting mechanisms, the hook can be quickly and efficiently fixed, various disadvantages of fixing the hook by using a traditional hook box are avoided, for example, the time for lifting and lowering the hook is long, the speed is slow, and the efficiency is low, meanwhile, the disorder and abrasion of the steel wire rope are avoided, and the dual functions of hook fixing and locking are realized.

[0015] 2) The sliding limiting block is driven by the hydraulic cylinder to realize hook locking or unlocking, the hydraulic cylinder can be connected to the corresponding hydraulic oil circuit together with other hydraulic cylinders of the crane, and is controlled to stretch and retract by the control chamber, so that automatic control is realized.

[0016] 3) The wear-resistant pad plate is adopted, so that the durability, safety and reliability of the sliding limiting block are improved.

[0017] 4) The first locking frame and the second locking frame are left-right symmetrical steel frames, and the lower ends of the first locking frame and the second locking frame are designed as horn-shaped guide openings, so that the hook is quickly fixed in place, the collision and abrasion of the hook with the steel frame are avoided, and the hook is more safe, stable and efficient. BRIEF DESCRIPTION OF DRAWINGS

[0018] The utility model will be further described in connection with the drawings and embodiments:

[0019] Fig. 1 It is the front view of the utility model.

[0020] Fig. 2 It is the left view (the first state) of the utility model.

[0021] Fig. 3 It is the left view (the second state) of the utility model.

[0022] In the drawing: hook 1, first locking frame 2, second locking frame 3, hook pin shaft 4, sliding limiting block 5, hydraulic cylinder 6, pad plate 7, limiting groove 8, guide groove 9, notch 10, hook winding system 11, arm frame 12. DETAILED DESCRIPTION

[0023] As Figs. 1-3 shown, a new type of hook fixing locking device, comprising a first locking frame 2, a second locking frame 3, the first locking frame 2 and the second locking frame 3 are fixed on the vertical arm 12 above the hook 1. The structure of the first locking frame 2 and the second locking frame 3 is the same, both including a locking seat, the lower end of the locking seat is provided with a guide groove 9, the guide groove 9 is trumpet-shaped, the lower end opening is large and the upper end opening is small, the upper end of the guide groove 9 is smoothly connected with the slot 10. Limiting grooves 8 are arranged on both sides of the vertical direction of the slot 10, and a sliding limiting block 5 is slidably arranged in the limiting groove 8, the sliding limiting block 5 is driven to move horizontally by a hydraulic oil cylinder 6 on one side of the slot 10, so as to realize the opening or closing of the slot 10.

[0024] In addition, a hook pin shaft 4 is specially added on the hook 1, the diameter of the hook pin shaft 4 matches the diameter of the slot 10. During the moving process of the hook 1, the hook pin shaft 4 moves with it and can enter the slot 10. A semicircular groove is arranged on the upper end of the sliding limiting block 5, the size of the groove matches the tolerance of the hook pin shaft 4, so as to ensure the limiting support of the hook pin shaft 4.

[0025] Preferably, the lower end surface of the limiting groove 8 is fixedly provided with a pad 7, and the pad 7 is made of bronze. The self-lubricating performance is excellent, the bronze pad surface can be embedded with solid lubricant, and a solid transfer film is formed during the friction process, which reduces friction and wear, and is suitable for heavy load, low speed, reciprocating or swinging and other difficult lubrication occasions. The carrying capacity is strong, the copper alloy with high strength is used as the base material, which can bear a large load and meet the requirements of mechanical equipment on the carrying capacity of the pad. The impact resistance is good, the material toughness is good, and it is not easy to be damaged when impacted, which can ensure the stability and safety of the mechanical equipment during operation. The friction coefficient is low, the surface is smooth, the friction coefficient is small, which can reduce the friction resistance, reduce the energy consumption and improve the working efficiency of the mechanical equipment. The wear is small, the wear resistance is good, and the service life is long, which can reduce the replacement frequency and reduce the maintenance cost. There is no noise during operation, which can improve the working environment and reduce noise pollution.

[0026] Working principle and process:

[0027] 1), as Fig. 2 shown, the hook 1 slowly rises, when it reaches the lower end of the first locking frame 2 and the second locking frame 3, the lower end of the first locking frame 2 and the second locking frame 3 is designed to have a guide groove 9, which facilitates the smooth sliding of the specially designed hook pin shaft 4 into the slot 10.

[0028] 2) When the hook slowly slides into and reaches the upper edge of the slot 10, the hydraulic cylinder 6 drives the sliding limit block 5 to extend, and the sliding limit block 5 slides on the base plate 7, and finally moves into the limit groove 8. According to the design and calculation of the sliding distance of the sliding limit block 5, the limit groove 8 is just aligned with the vertical direction of the hook pin shaft 4.

[0029] 3) Operate the hook winding system 11 and slowly lower the hook, and stop operating when the hook pin shaft 4 falls into the limit groove of the sliding limit block 5, at this time the hook is in a fixed locking state, thereby completing the hook retraction of the crane, and the specific state is shown in Fig. 3

[0030] 4) Start the hook winding system 11 of the crane, slowly lift the hook 1, when the hook pin shaft 4 reaches the upper edge position of the slot 10, start the hydraulic cylinder 6, retract the cylinder rod, and the sliding limit block 5 slides to the side of the hydraulic cylinder 6 until the sliding limit block 5 leaves the position of the limit groove 8, at this time start the hook winding system 11, the hook 1 continues to fall until the hook pin shaft 4 leaves the first locking frame 2 and the second locking frame 3, at this time the hook falling operation of the offshore wind power installation platform is completed.​

Claims

1. A new type of hook fixing and locking device, characterized in that: The utility model relates to a kind of lifting hook locking device, including first locking frame (2), second locking frame (3), first locking frame (2), second locking frame (3) are fixed on the arm support (12) above hanger (1) in parallel interval;The first locking frame (2), second locking frame (3) are same in structure, and all include locking seat, and the vertical slot (10) is opened in the lower end of locking seat, and the hanger pin shaft (4) on hanger (1) passes through slot (10) and is limited by limiting mechanism.

2. A new type of hook fixing and locking device according to claim 1, characterized in that: The limiting mechanism includes limiting slot (8), limiting slot (8) is horizontally arranged and located on the left and right sides of slot (10), and sliding limiting block (5) is slidably arranged in limiting slot (8), and sliding limiting block (5) is driven to move left and right by hydraulic oil cylinder (6).

3. A new type of hook fixing and locking device according to claim 2, characterized in that: The lower bottom surface of the limiting slot (8) is provided with a wear-resistant pad (7).

4. A new type of hook fixing and locking device according to claim 3, characterized in that: The pad (7) is made of bronze.

5. A new type of hook fixing and locking device according to claim 2, characterized in that: The sliding limiting block (5) is provided with a groove, and the groove limits the hanger pin shaft (4) when the sliding limiting block (5) is extended.

6. A new type of hook fixing and locking device according to claim 1, characterized in that: The lower end of the slot (10) is a horn-shaped guide slot (9), and the lower end of the guide slot (9) has a large opening and the upper end has a small opening.

7. A new type of hook fixing and locking device according to claim 1, characterized in that: The width of the slot (10) matches the width of the hanger pin shaft (4).

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