Movable lifting hook disassembly and assembly fixing device and application

Abstract

The invention provides a movable lifting hook disassembly and assembly fixing device which comprises a forklift with a liftable pallet fork and further comprises a lifting hook fixing device, the lifting hook fixing device comprises a tray base where the pallet fork can be inserted, a vertical baffle is fixed to the tray base, and a lifting hook is arranged on the baffle. The baffle at least comprises a first side plate and a second side plate which are oppositely arranged, a plurality of threaded holes are formed in the first side plate and the second side plate, and a fixing bolt with adjustable screwing length is installed in each threaded hole from outside to inside.

Description

Technical Field

[0001] The present invention belongs to the technical field of port machinery, and particularly relates to a mobile hook disassembly and assembly fixing device applicable to a heavy-duty port machinery crane beam and hook technical maintenance safety and efficiency improvement device and its application Background Art

[0002] The finished product terminal plays a vital role as an important channel for the water transportation of finished steel products out of the factory. For this purpose, the finished product terminal is equipped with large-scale port machinery equipment. The finished steel products are transported to the dock by car, and then the port machinery lifts the steel coils to the ship. The port machinery is equipped with a lifting beam at the hook part, and the finished steel products are lifted by the hook at the bottom of the lifting beam. According to the different types of steel coils, various types of lifting beams are designed to meet the needs of on-site operations.

[0003] After the crane reaches a certain tonnage, according to the management requirements of lifting equipment, the main load-bearing parts of the crane, such as hooks, pins, hook forks, cross shafts, etc., need to be disassembled, derusted, inspected, reshaped, repaired and improved (such as Figure 1 and Figure 2 As shown), in order to promptly discover whether its status and performance are intact. If the test results are intact, continue to use it; if the parts are found to be damaged after the test, they need to be replaced with new parts to ensure that the performance of all parts of the hanging beam are intact.

[0004] When replacing, the beam is usually placed on a special bracket first, and then the various parts of the beam are removed. Because the hook is located in the middle and lower part of the beam, the hook is irregular in shape, the maximum hook weight is greater than 1000kg, and the removal space is limited, the hook cannot be removed by manpower alone. Although you can try to use a forklift to assist, but due to the irregular shape of the hook, it is usually difficult for the forklift to cooperate with the removal of the hook. In addition, using a crane will cause problems of crooked lifting, and the removal process is full of dangers. The sudden fall of the hook will also cause serious personal injury to personnel. Although many solutions have been thought of on-site, the existing technology has not completely solved this problem. The removal of the beam hook has always been a major problem that plagues the site.

[0005] The shortcomings of the existing technology are mainly reflected in the following aspects:

[0006] There are many difficulties and safety hazards in the process of dismantling the hook of the crane beam, mainly due to the irregular shape of the hook and the small space for disassembly and assembly of the hook. In the absence of similar special disassembly and fixing devices, relying on the existing operation method, not only is the disassembly and assembly difficult, but if the hook slips during the disassembly process, it will cause serious personal injury to the operator. Therefore, the safety of the on-site operators cannot be guaranteed. During the installation of the hook, the hook needs to be lifted to a suitable position before installation. The existing technology cannot meet the requirements of hook installation. The installation of the hook is difficult and the safety risk is greater. The existing operation technology and operation method cannot meet the safe and efficient disassembly and assembly of the crane beam hook. The existing disassembly and assembly method cannot fix the hook during the disassembly and assembly process, and cannot realize the lifting and lowering control of the hook during the disassembly and assembly process. The space of the crane beam hook of the port machinery is extremely small, the hook is heavy, and it must be accurately aligned during the disassembly and assembly process, and it needs to be properly rotated. The hook must be firmly fixed and accurately adjusted. Therefore, the existing technology still cannot meet the use of efficient and safe disassembly and assembly of the crane beam hook of the port machinery. Summary of the invention

[0007] The technical problem to be solved by the present invention is to overcome the above-mentioned shortcomings of the prior art and provide a mobile hook disassembly and assembly fixing device that can effectively solve the difficulty in disassembling and assembling the hook, avoid shaking and tipping during operation, and reduce the safety hazards of operators.

[0008] The technical problem to be solved can be implemented through the following technical solutions.

[0009] A mobile hook disassembly and assembly fixing device includes a forklift with a liftable fork, and is characterized in that it also includes a hook fixing device, the hook fixing device includes a pallet base into which the fork can be inserted, a vertical baffle is fixed to the pallet base, the baffle includes at least a pair of first side plates and second side plates arranged opposite to each other, the first side plates and the second side plates are each provided with a plurality of threaded holes, and a fixing bolt with an adjustable length of screwing-in is installed from the outside to the inside in each threaded hole.

[0010] As a further improvement of the technical solution, the inner side surfaces of the first side panel and the second side panel are arranged in parallel.

[0011] Preferably, the axes of each fixing bolt screwed into the first side plate are parallel; the axes of each fixing bolt screwed into the second side plate are also parallel.

[0012] Further preferably, for each fixing bolt screwed into the first side plate, there is a coaxial corresponding fixing bolt on the second side plate.

[0013] More preferably, the sum of the bolt lengths of any fixing bolt screwed into the first side plate and the coaxial fixing bolt on the corresponding second side plate that can be screwed into the two side plates is not less than the distance between the two side plates.

[0014] As a preferred embodiment of the present invention, the tray base includes a lower bottom plate, a plane bearing is installed in the middle position of the upper end surface of the lower bottom plate, the plane bearing has a plane bearing intermediate shaft, an upper bottom plate is connected to the upper shaft of the plane bearing intermediate shaft, and the baffle is arranged on the upper part of the upper bottom plate.

[0015] Furthermore, a horizontal fork insertion hole is provided on the lower base plate.

[0016] Furthermore, a threaded hole is provided at the lower portion of the fork insertion hole, and a locking bolt is screwed into the threaded hole to lock and fix the fork and the pallet base.

[0017] Another technical problem to be solved by the present invention is to provide an application of the aforementioned mobile hook disassembly and assembly fixing device in the disassembly and assembly of the hook of the heavy port machinery crane beam.

[0018] The above-mentioned mobile hook disassembly and assembly fixing device provided by the present invention, when used on-site as a technical maintenance safety and efficiency improvement device for the crane beam and hook of heavy-duty port machinery, can utilize the external force of the fixing device to achieve effective fixation of the crane beam and hook, and the separation of the hook and the crane beam can be achieved by lifting and lowering the device, which not only reduces the work intensity of maintenance personnel, but also greatly improves the maintenance efficiency and reduces the maintenance operation time.

[0019] As a technical maintenance and safety efficiency improvement device for heavy-duty port machinery crane beams and hooks, the hook fixing device adopts the method of front-mounted fixing bolts, which can be used for the disassembly and assembly of various types of hooks. It can not only fix and disassemble components such as hooks, but also fix and disassemble other hanging and irregular-shaped components. When applied to the disassembly and assembly of various types of crane beams and large hooks, the efficiency is greatly improved, the safe operation of personnel is guaranteed, and it plays a positive role in the safe and efficient disassembly and assembly of on-site hooks. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the port machinery crane beam and its components;

[0021] Figure 2 for Figure 1 Side view of

[0022] Figure 3 This is the hydraulic lifting structure diagram of this device;

[0023] Figure 4 This is the structural diagram of the hook fixing of this device;

[0024] Figure 5 for Figure 4 Side view of

[0025] Figure 6 This is an overall structural diagram of the mobile hook disassembly and fixing device of the present invention;

[0026] Figure 7 A diagram of special brackets for placing hanging beams;

[0027] Figure 8 The application diagram of the mobile hook disassembly and fixing device of the present invention is shown in FIG. Figure 1 ;

[0028] Fig. 9 The application diagram of the mobile hook disassembly and fixing device of the present invention is shown in FIG. Figure 2 ;

[0029] Fig.10 This is a schematic diagram of hook fixation;

[0030] Fig.11 This is a schematic diagram of the hook fixing and disassembly process;

[0031] Fig.12 This is a schematic diagram of the hook disassembly;

[0032] Fig.13 This is a schematic diagram of the hook being fixed after being disassembled;

[0033] Fig.14 This is a schematic diagram of the hook disassembly operation process;

[0034] In the figure:

[0035] 1: channel steel column; 2: handle; 3: sprocket; 4: chain; 5: chain fixing seat; 6: manual unloading valve; 7: manual lifting handle of oil cylinder; 8: foot-operated lifting pedal of oil cylinder; 9: return spring; 10: universal wheel; 11: frame base; 12: fork teeth; 13: lifting roller; 14: lifting oil cylinder;

[0036] 20: threaded hole; 21: reinforcing rib plate; 22: plane bearing; 23: lower base plate of fixing device; 24: fixing bolt; 25: side plate of fixing device; 26: fixing nut; 27: upper base plate of fixing device; 28: fixing bolt of fork tooth hole; 29: intermediate shaft of plane bearing; 30: gear sleeve hole; 31: middle hook rotation reducer assembly; 32: lifting beam body; 33: main lifting hook of lifting beam; 34: special bracket for lifting beam. DETAILED DESCRIPTION

[0037] The specific implementation modes of the present invention will be further described in detail below with reference to the accompanying drawings.

[0038] The present invention provides a mobile hook disassembly and assembly fixing device and application, which can be used as a safety and efficiency-enhancing device for the technical maintenance of heavy-duty port machinery crane beam hooks. Figures 3 to 14 The device is mainly composed of three parts: a hydraulic lifting and lowering mechanism, a hook fixing device and a special bracket for the hanging beam.

[0039] Reference Figure 3 , schematically shows the hydraulic lifting and lowering mechanism of the device, the main structure of which is a hydraulic lifting and lowering trolley, the bottom of which is provided with a frame base 11, the lower part of which is provided with a universal wheel 10 for walking, the frame base 11 is provided with a vertical channel steel column 1, the channel steel column 1 is provided with a handle 2, the channel steel column 1 is provided with a sprocket 3, the lower part of the sprocket 3 is connected to the lifting cylinder 14, the chain 4 is meshed with the upper end gear of the sprocket 3, and one end of the chain is fixed to the chain On the fixed seat 5, the other end works together with the lifting roller 13 to drag the fork teeth 12 (equivalent to the fork) up and down. That is, when the lifting cylinder 14 pushes the sprocket 3 upward, the left end of the chain is fixed by the chain fixing seat 5. Under the action of the chain and the sprocket, the right side of the chain is stretched, thereby driving the fork teeth 12 to move upward along the set track; when the manual unloading valve 6 is pressed, the lifting cylinder 14 unloads the force, and the fork teeth 12 return to their positions under the action of their own gravity. In order to facilitate the control of the up and down movement of the fork teeth, a manual cylinder lifting handle 7, a cylinder foot-operated lifting pedal 8 and its matching return spring 9 are also provided. The lifting principle of the hydraulic lifting mechanism is similar to that of the existing mechanism, which will not be repeated here.

[0040] Reference Figure 4 and Figure 5 In the hook fixing device of the present invention, a plane bearing 22 is arranged on the upper part of the fixing device lower bottom plate 23, and the fixing device upper bottom plate 27 is fixed on the plane bearing intermediate shaft 29 through a fixing nut 26; the fixing device upper bottom plate 27 can rotate relative to the fixing device lower bottom plate 23 along the plane bearing intermediate shaft 29. Two vertical fixing device side plates 25 are placed in parallel on the upper part of the fixing device upper bottom plate 27, and the two fixing device side plates 25 are arranged oppositely, and a reinforcing rib plate 21 is arranged on the outer side; each fixing device side plate 25 is provided with multiple rows of threaded holes 20, and each threaded hole 20 is installed with a matching fixing bolt 24 from the outside to the inside; a plurality of fixing bolts 24 arranged on the fixing device side plates 25 on both sides are used to tighten the hook placed between the two side plates inwardly. Two horizontal tooth sleeve holes 30 are arranged on the fixing device lower bottom plate 23 as fork tooth plug-in holes to facilitate the insertion of the fork teeth 12 of the hydraulic lifting and lifting trolley, and then the inserted fork teeth complete the lifting of the entire hook fixing device. Furthermore, in order to maintain the stability of the lifting, a threaded hole is provided at the lower portion of the tooth sleeve hole 30 for screwing in the fork tine hole fixing bolt 28 so as to achieve the fastening and compression of the fork tine by the fixing bolt.

[0041] The hydraulic lifting trolley and the hook fixing device are fixed as a whole by connecting the fork teeth 12 and the fork tooth holes 300, tightening the fork tooth hole fixing bolts 28, and assembling them into a heavy-duty port machinery crane beam hook technical maintenance safety and efficiency device, such as Figure 6 shown.

[0042] When in use, place the beam that needs maintenance on Figure 7 The device is mounted on the special bracket 34 for the lifting beam, and the hook is effectively fixed by the device and the hydraulic pressure is applied to change many problems existing in the current hook disassembly and assembly process, and eliminate the potential safety hazards in the hook disassembly and assembly process. The device is conveniently pushed by manpower, and the fixing device rotates freely according to the angle of the hook. The hook is firmly fixed by the action of the bolts, thereby achieving safe and efficient disassembly and assembly of the hook.

[0043] The specific implementation methods are as follows:

[0044] 1. Place the beam on the special bracket 34 for the beam, assemble the heavy-duty port machinery beam hook technical maintenance safety and efficiency device, adjust the angle of the fixing device according to the position of the beam and the angle of the hook, and push the device to the position corresponding to the hook, such as Figure 8 As shown by the arrow, the hydraulic lifting trolley pushes the hook fixing device fixed thereon into the lower part of the hanging beam hook in the direction of the arrow in the figure.

[0045] 2. According to the hook height, step on the lifting pedal (i.e. the cylinder foot lifting pedal in the figure) to lift the lifting cylinder 14, refer to Fig. 9 and Fig.10 The main hook 33 of the hanging beam is fixed on the hanging beam body 32. The upper part of the hanging beam body 32 is the middle hook rotation reducer assembly 31. When disassembling the main hook 33 of the hanging beam, first drive the large hook fixing mechanism (i.e. the hook fixing device) to rise and contact with the hook. After confirming that the bottom is effectively in contact, tighten the fixing bolts 24 on both sides of the fixing device side plate 25 in sequence according to the outer dimensions of the hook to achieve effective fixation of the hook. The front and rear fixing bolts must be screwed to the bottom to prevent the hook from tipping forward and backward. Fig.11 , remove the fixing bolts, clamping plates and shafts on both sides of the hook in turn.

[0046] 3. After confirming that the hook fixing bolts, clamps and shafts have been removed, slowly turn the manual unloading valve 6 to lower the height of the large hook fixing mechanism, drive the large hook to descend and completely separate from the beam, and then push out the safety and efficiency device, so that the large hook of the beam can be safely and efficiently removed; Fig.12 shown.

[0047] 4. To install the hook, just follow the above steps in reverse.

[0048] Reference Fig.14 The operation flow chart is as follows:

[0049] Assemble the heavy-duty port crane beam hook technical maintenance safety and efficiency device, install the large hook fixing mechanism on the fork tine 12 of the lifting mechanism, tighten the fork tine hole fixing bolt 28 to connect the two as one. After the installation is completed, check whether the installation and fixing are good, test whether the lifting mechanism performance is normal, check whether the rotation performance of the fixing bolt 24 is good, and check whether the rotation performance of the device universal wheel 10 is flexible and light.

[0050] Place the beam on the dedicated bracket, push the device under the beam hook, adjust the angle of the large hook fixing mechanism so that the hook can smoothly enter the fixing mechanism. Lock the manual unloading valve 6, step on the oil cylinder foot lift pedal 8, and raise the fixing mechanism height so that the lower part of the hook contacts the upper bottom plate 27 of the fixing device. Tighten the fixing bolts 24 on the side plate 25 of the hook fixing device in sequence to contact the hook, and then tighten the fixing bolts 24 on the other side to lock the hook. Refer to Fig.13 , then tighten the bolts closest to the hook at the front and rear ends of the hook fixing device to prevent tipping, that is, when the front end of the fixing bolt 24 does not directly act on the hook along the bolt axis, it is necessary to ensure that the ends of the fixing bolts 24 at the corresponding positions on the side plates of the fixing devices on both sides are directly against each other to form obstacles blocking the front and rear of the hook; after all are tightened, check whether the hook is firmly fixed.

[0051] After it is firmly fixed, fine-tune the height of the hook fixing device so that the hook pin is not affected by the hook suspension gravity. Further, remove the fixing bolts, clamps and shafts on both sides of the hook in turn. After the removal is completed, manually control the unloading valve, slowly loosen the trolley manual unloading valve 6 to lower the hook fixing mechanism. Under the action of the fixing bolts 24, drive the hook to slowly descend, and finally the hook is separated from the beam. After confirming that the position is completely separated, tighten the manual unloading valve 6, and push out the heavy-duty port machinery beam hook technical maintenance safety and efficiency device as a whole to keep the large hook away from the beam. Use an electric hoist and wire rope to hang the hook. After confirming that the connection is effective, loosen the fixing bolts 24 on both sides of the hook fixing mechanism in turn, operate the hoist to lift the hook out and land it, and complete the removal of the hook.

[0052] When installing the hook, the installation order is the opposite of the disassembly order.

[0053] The present invention provides a mobile hook disassembly and assembly fixing device and its application. In view of the practical difficulties encountered in the disassembly and assembly process of the hook, a heavy-duty port machinery crane beam hook technical maintenance safety and efficiency improvement device is manufactured for the disassembly and assembly of the crane beam hook. When in use, the crane beam is placed on the maintenance bracket, and the device is pushed to the corresponding position by manpower. According to the specific rotation angle of the hook, the rotating device and the hook are kept vertical. After confirmation, the lifting device contacts the hook. According to the outer dimensions of the hook, the bolts at the corresponding parts of the device and the hook are tightened in sequence. The device firmly fixes the hook through the action of the bolts. At this time, the fixing pin of the hook is removed, and the manual control device is lowered to separate the hook from the crane beam. In this way, the crane beam hook can be safely and efficiently disassembled, which saves time and effort. The most important thing is to ensure the safe disassembly of the hook. The installation method is the opposite. The movable form of the device meets the requirements of on-site use, and the hook can be quickly disassembled and assembled, safety is guaranteed, and the efficiency of disassembly and assembly of the hook is greatly improved.

[0054] When the device provided by the present invention is used on site as a technical maintenance safety and efficiency-enhancing device for heavy-duty port machinery crane beams and hooks, it can fundamentally eliminate the problems of large crane beams and hooks being difficult to fix, difficult to adjust, laborious to carry, low maintenance efficiency, and the potential risk of tipping and crushing during operation. At the same time, other irregular suspension components can also be fixed, disassembled, and carried. Furthermore, fixing devices of different sizes can be made according to actual needs.

[0055] At the same time, the device can also be used in conjunction with forklifts and other construction machinery, which is more labor-saving and efficient. This equipment basically does not require daily maintenance, has the characteristics of all-weather efficient operation, is very practical and versatile, and has broad promotion prospects.

Claims

1. A mobile hook disassembly and fixing device, comprising a forklift with a lifting fork, characterized in that: It also includes a hook fixing device, which includes a pallet base into which the fork can be inserted, a vertical baffle fixed on the pallet base, and the baffle includes at least a pair of first side plates and second side plates arranged opposite to each other, and a plurality of threaded holes are formed on the first side plates and the second side plates, and a fixing bolt with an adjustable length is installed from the outside to the inside in each threaded hole.

2. The mobile hook disassembly and fixing device according to claim 1 is characterized in that: The inner side surfaces of the first side plate and the second side plate are arranged in parallel.

3. The mobile hook disassembly and fixing device according to claim 1 or 2, characterized in that: The axes of each screwed-in fixing bolt on the first side plate are parallel; the axes of each screwed-in fixing bolt on the second side plate are also parallel.

4. The mobile hook disassembly and fixing device according to claim 3 is characterized in that: For each screwed fixing bolt on the first side plate, there is a coaxial corresponding fixing bolt on the second side plate.

5. The mobile hook disassembly and fixing device according to claim 4 is characterized in that: The sum of the bolt lengths of any one of the fixing bolts screwed into the first side plate and the coaxial fixing bolt on the corresponding second side plate that can be screwed into the two side plates is not less than the distance between the two side plates.

6. The mobile hook disassembly and fixing device according to claim 1, characterized in that: The tray base includes a lower bottom plate, a plane bearing is installed in the middle position of the upper end surface of the lower bottom plate, the plane bearing has a plane bearing intermediate shaft, an upper bottom plate is connected to the upper shaft of the plane bearing intermediate shaft, and the baffle is arranged on the upper part of the upper bottom plate.

7. The mobile hook disassembly and fixing device according to claim 6 is characterized in that: The lower bottom plate is provided with a horizontal fork insertion hole.

8. The mobile hook disassembly and fixing device according to claim 7, characterized in that: A threaded hole is provided at the lower part of the fork insertion hole, and a locking bolt is screwed into the threaded hole to lock and fix the fork and the pallet base.

9. Application of the mobile hook disassembly and assembly fixing device described in any one of claims 1 to 8 in the disassembly and assembly of the hook of a heavy-duty port machinery crane beam.

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