Auxiliary device for drop test of container quay crane sling

Abstract

A container quay crane sling drop test auxiliary device belongs to the quay crane sling technical field, and comprises a pedestal, the top side of the pedestal is provided with a support housing, the support housing is internally provided with a lifting arm capable of rising or falling, the lifting arm is used for lifting a sling, the top side of the support housing is provided with a lock catch hole, the lifting arm is an internal hollow structure, and the lock catch hole is provided with a lock catch. A lifting arm is arranged in the supporting shell, a lifting plate capable of being flatly attached to the top side of the supporting shell is arranged at the top end of the lifting arm, the bottom end of the lifting arm is of an opening structure, a lifting cylinder located in the lifting arm is arranged in the supporting shell, and a locking device matched with the lifting arm is arranged on the supporting shell. The container quay crane sling drop test auxiliary device is reasonable in design, ingenious in structure, convenient to operate, capable of simulating the working condition of a sling site, good in overhaul effect, capable of effectively improving the working efficiency and suitable for popularization.

Description

Technical Field

[0001] The invention relates to the technical field of quay crane spreaders, and in particular to a drop test auxiliary device for a container quay crane spreader. Background Art

[0002] As an important part of the shore container crane (abbreviated as quay crane or bridge crane), the quay crane plays a vital role in the loading and unloading operations of the container terminal. The quay crane is a part of the professional equipment specially used for loading and unloading container ships at the container terminal. It is usually used in conjunction with the shore container crane to lift, move and stack containers. The design and structure of the quay crane enables it to adapt to containers of different sizes and weights, thereby ensuring the efficiency and safety of loading and unloading operations.

[0003] At present, when the quay crane spreader is lifting containers, there is a situation where the spreader falls and collides with the container. At this time, the spreader is subjected to the interaction force, which will expose some hidden faults that cannot be found without vibration, thus affecting the normal function of the spreader. In order to solve such hidden faults that can only be exposed in a vibrating working environment, the staff is required to simulate the use scenarios of the spreader in non-working conditions, so as to realize the daily inspection and maintenance of the spreader, and avoid functional abnormalities in normal work, which may cause safety accidents.

[0004] However, at present, during the maintenance of quay crane hoisting equipment, workers generally work on a relatively stable hoisting equipment maintenance platform. It is difficult to repair some faults that require a vibrating environment to occur, and it is impossible to completely overhaul the hoisting equipment. The work efficiency is low and the maintenance effect is poor, posing a safety hazard. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art of incomplete maintenance and poor maintenance effect, and to provide a container quay crane spreader drop test auxiliary device, which has a reasonable design, simple structure, and is easy to operate. By simulating the operating conditions of the spreader on site, the spreader can be thoroughly overhauled, which can not only effectively improve the maintenance effect, but also improve work efficiency, and is suitable for promotion.

[0006] The present invention is realized through the following technical scheme: a container quay crane spreader drop test auxiliary device comprises a base, a support shell is arranged on the top side of the base, a lifting arm which can be raised or lowered is arranged inside the support shell, the lifting arm is used to lift the spreader, and a lock hole corresponding to the lifting lock is opened on the top side of the support shell; the lifting arm is a hollow structure inside, a lifting plate which can be flat against the top side of the support shell is arranged on the top of the lifting arm, and the bottom end of the lifting arm is an open structure; a lifting cylinder which is located inside the lifting arm is arranged inside the support shell, the lifting cylinder is fixed to the inner bottom side of the support shell, and the piston rod of the lifting cylinder is a separated structure from the inner top side of the lifting arm, the lifting cylinder can lift the lifting arm when it is extended, and the lifting arm can fall under the action of gravity when the lifting cylinder is retracted; a locking device which cooperates with the lifting arm is arranged on the support shell, the locking device can limit the lifting arm, and when the lifting cylinder is retracted, the position of the lifting arm can be fixed by the locking device.

[0007] A further improvement of the present invention is that a plurality of supporting partitions are arranged inside the supporting shell, and the interior of the supporting shell is separated by a front installation chamber and a rear supporting chamber through the supporting partitions. The lifting arm and the lifting cylinder are arranged inside the front installation chamber, and the top side of the rear supporting chamber is used to support the corners of the sling, and the locking hole is arranged on the top side of the rear supporting chamber.

[0008] A further improvement of the present invention is that the height of the front installation chamber is greater than the height of the rear support chamber, so that the top side of the support shell can form a stepped surface.

[0009] A further improvement of the present invention is that a guide block located outside the lifting arm is provided inside the front installation chamber, and the guide block can guide and limit the lifting arm when the lifting arm is raised or lowered.

[0010] A further improvement of the present invention is that the locking device includes a locking bracket, which is arranged on the front side of the supporting shell, and the top end of the locking bracket is rotatably connected to the top of the front side of the supporting shell, so that the locking bracket can form a flipping structure, and a locking tooth arm is arranged on the top of the locking bracket, and a buffer damper is arranged between the locking bracket and the supporting shell, so that the locking bracket can be kept in an inclined state through the buffer damper; a locking tooth surface corresponding to the locking tooth arm is arranged on the front side of the lifting arm, and an insertion port corresponding to the locking tooth arm is opened on the front side of the supporting shell, and the locking tooth arm can mesh with the locking tooth surface through the insertion port, so as to fix the position of the lifting arm; an electromagnetic lock is arranged on the bottom of the front side of the supporting shell, and a groove corresponding to the electromagnetic lock is opened on the bottom of the locking bracket, and the electromagnetic lock can absorb the locking bracket after being energized, and at this time, the locking bracket is attached to the front side of the supporting shell, so that the locking tooth arm can mesh with the locking tooth surface after passing through the insertion port.

[0011] A further improvement of the present invention is that an auxiliary locking unit cooperating with the locking bracket is provided on the support shell, the auxiliary locking unit includes a push-pull electromagnet, the push-pull electromagnet is located on one side of the locking bracket and fixed to the front side of the support shell, a locking hook is provided below the push-pull electromagnet, the end of the locking hook away from its hook tip is rotatably connected to the front side of the support shell, the structure of the locking hook is rotatably connected to the movable sliding rod of the push-pull electromagnet, and a locking rod cooperating with the locking hook is provided on one side of the locking bracket. When the locking bracket is attached to the front side of the support shell, the push-pull electromagnet can drive the locking hook to flip, so that the locking hook and the locking rod are engaged or separated.

[0012] A further improvement of the present invention is that a limit stopper matched with the locking bracket is arranged at the front end of the base, and when the locking bracket is tilted, the limit stopper can resist the bottom end of the locking bracket.

[0013] A further improvement of the present invention is that a push handle is provided at the rear end of the base, and a roller is provided at the bottom side of the base.

[0014] A further improvement of the present invention is that buffer rubber pads are arranged on the limit stopper, between the support shell and the base, and between the lifting arm and the inner bottom side of the base.

[0015] The beneficial effects of the present invention are as follows: the device has a reasonable design, a simple structure, and is easy to operate. By simulating the on-site operating conditions of the spreader, the spreader can simulate the collision vibrations generated by daily grabbing of containers, so that invisible fault phenomena are fully exposed, thereby enabling a thorough overhaul of the spreader, with a better overhaul effect, reducing potential safety hazards, and ensuring the stability and safety of the spreader during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the present invention, the accompanying drawings required for use in the description will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0017] Figure 1 It is a structural schematic diagram of a specific embodiment of the present invention.

[0018] Figure 2 It is a state diagram of the locking bracket and the supporting shell when the locking bracket and the supporting shell are in contact with each other according to a specific embodiment of the present invention.

[0019] Figure 3 yes Figure 2 Cross-sectional view of .

[0020] Figure 4 It is a state diagram of the lifting arm of a specific embodiment of the present invention when it is raised.

[0021] 1. Base; 2. Support shell; 201. Front installation chamber; 202. Rear support chamber; 203. Locking hole; 3. Lifting arm; 301. Lifting plate; 4. Lifting cylinder; 5. Locking bracket; 501. Groove; 6. Locking tooth arm; 7. Buffer damper; 8. Locking tooth surface; 9. Electromagnetic lock; 10. Electromagnet; 11. Locking hook; 12. Guide block; 13. Limit stop seat; 14. Push handle; 15. Roller; 16. Support partition. DETAILED DESCRIPTION

[0022] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in this specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0023] Now refer to Figure 1-4 , combined with a specific embodiment, it is explained as follows: A container quay crane spreader drop test auxiliary device described in the present invention includes a base 1, a support shell 2 is arranged on the top side of the base 1, a lifting arm 3 that can be raised or lowered is arranged inside the support shell 2, the lifting arm 3 is used to lift the spreader, and a lock hole 203 corresponding to the lifting lock is opened on the top side of the support shell 2.

[0024] Specifically, a plurality of support partitions 16 are arranged inside the support shell 2, and the support shell 2 is separated into a front installation chamber 201 and a rear support chamber 202 through the support partitions 16. The lifting arm 3 and the lifting cylinder 4 are arranged inside the front installation chamber 201, and the top side of the rear support chamber 202 is used to support the corner of the sling. The locking hole 203 is arranged on the top side of the rear support chamber 202, and the height of the front installation chamber 201 is greater than the height of the rear support chamber 202, so that a stepped surface can be formed on the top side of the support shell 2. The overall structure of the support shell 2 is simple, high in strength and easy to assemble; at the same time, the design of the stepped surface can make the top surface of the support shell 2 fully adapt to the specific form of the sling, and it is highly practical.

[0025] The lifting arm 3 is a hollow structure inside, and a lifting plate 301 that can be flush with the top side of the supporting shell 2 is provided at the top of the lifting arm 3, and the bottom end of the lifting arm 3 is an open structure; a lifting cylinder 4 located inside the lifting arm 3 is provided inside the supporting shell 2, and the lifting cylinder 4 is fixed to the inner bottom side of the supporting shell 2, and the piston rod of the lifting cylinder 4 is a separated structure from the inner top side of the lifting arm 3, and the lifting cylinder 4 can lift the lifting arm 3 when it is extended, and the lifting arm 3 can fall under the action of gravity when the lifting cylinder 4 is retracted; a locking device that cooperates with the lifting arm 3 is provided on the supporting shell 2, and the locking device can limit the lifting arm 3, and when the lifting cylinder 4 is retracted, the position of the lifting arm 3 can be fixed by the locking device.

[0026] Specifically, the locking device includes a locking bracket 5, which is arranged on the front side of the supporting shell 2, and the top of the locking bracket 5 is rotatably connected to the top of the front side of the supporting shell 2, so that the locking bracket 5 can form a flip structure, and a locking tooth arm 6 is arranged on the top of the locking bracket 5, and a buffer damper 7 is arranged between the locking bracket 5 and the supporting shell 2, and the locking bracket 5 can be kept in an inclined state through the buffer damper 7; a locking tooth surface 8 corresponding to the locking tooth arm 6 is arranged on the front side of the lifting arm 3, and an insertion port corresponding to the locking tooth arm 6 is opened on the front side of the supporting shell 2, and the locking tooth arm 6 can be meshed with the locking tooth surface 8 through the insertion port, so as to fix the position of the lifting arm 3; an electromagnetic lock 9 is arranged at the bottom of the front side of the supporting shell 2, and a groove 501 corresponding to the electromagnetic lock 9 is opened at the bottom of the locking bracket 5, and the electromagnetic lock 9 can absorb the locking bracket 5 after being energized, and at this time, the locking bracket 5 is flat with the front side of the supporting shell 2, so that the locking tooth arm 6 can be meshed with the locking tooth surface 8 after passing through the insertion port.

[0027] The buffer damper 7 can adopt a damping telescopic rod, the top end of the buffer damper 7 is rotationally connected to the front side of the support shell 2, and the bottom end of the buffer damper 7 is rotationally connected to one side of the locking bracket 5. Under the action of the buffer damper 7, the locking bracket 5 can always remain tilted, and the locking tooth arm 6 is completely separated from the locking tooth surface 8 at this time. Since the locking bracket 5 is rotationally connected to the support shell 2, when the electromagnetic lock 9 is powered on, the electromagnetic lock 9 can firmly absorb the locking bracket 5 so that the locking bracket 5 is flat against the front side of the support shell 2. At this time, the locking tooth arm 6 is meshed with the locking tooth surface 8 after passing through the insertion port; after the electromagnetic lock 9 is powered off, the locking bracket 5 can be reset under the action of the buffer damper 7. In this process, the buffer damper 7 can play a buffering role, so that the locking bracket 5 is slowly reset.

[0028] The use principle of the present invention is as follows: Under normal conditions, the lifting cylinder 4 of the device is in a retracted state, the lifting arm 3 is completely inside the support shell 2, and the lifting plate 301 is flat against the top side of the support shell 2; at the same time, the locking bracket 5 is in an inclined state, and the locking tooth arm 6 is completely separated from the locking tooth surface 8. When it is necessary to test the sling, in combination with the existing testing technology, the required test system is first installed on the sling, and then the device is arranged according to the specific form of the sling, that is, the device is pre-installed with four devices, and the four devices are arranged below the four corners of the sling, and each device corresponds to the corner above it. After the arrangement is completed, in combination with the existing electrical technology, the various electrical components of the device are assembled; after the assembly is completed, the lifting cylinder 4 is started, the lifting cylinder 4 extends and synchronously drives the lifting arm 3 to rise out of the support shell 2, and the lifting arm 3 stops when it rises to the required height. At this time, the electromagnetic lock 9 is energized, and the electromagnetic lock 9 can firmly absorb the locking bracket 5. At the same time, the locking tooth arm 6 is meshed with the locking tooth surface 8 to fix the position of the lifting arm 3. After fixing the lifting arm 3, start the sling so that the sling is placed on the device. At this time, the lifting arm 3 supports the sling through the lifting plate 301. When preparing for the test, start the lifting cylinder 4, and the lifting cylinder 4 retracts to the initial state. At this time, since the electromagnetic lock 9 remains energized, the lifting arm 3 can continue to support the sling under the action of the locking device. When the test starts, the electromagnetic lock 9 is powered off. Under the action of the buffer damper 7 and the gravity of the sling, the locking bracket 5 is reset, and the locking tooth arm 6 is separated from the locking tooth surface 8. During this process, the sling and the lifting arm 3 are dropped synchronously. When dropped to the lowest point, the top side of the rear support chamber 202 can support the corner of the sling, and the lifting lock is inserted into the lock hole 203. At the same time, during the entire dropping process, the test system performs detection and records data. The entire operation process is very simple, and the use of this device can detect the state of the sling arm extension and the sling arm retraction, which perfectly adapts to the working state of the sling.

[0029] In one of the embodiments, a guide block 12 located outside the lifting arm 3 is disposed inside the front installation chamber 201 , and the guide block 12 can guide and limit the lifting arm 3 when the lifting arm 3 is raised or lowered.

[0030] In one embodiment, the auxiliary locking unit includes a push-pull electromagnet 10, which is located on one side of the locking bracket 5 and fixed to the front side of the support shell 2. A lock hook 11 is arranged below the push-pull electromagnet 10, and the end of the lock hook 11 away from its hook tip is rotatably connected to the front side of the support shell 2. The structure of the lock hook 11 is rotatably connected to the movable slide rod of the push-pull electromagnet 10. A lock rod that matches the lock hook 11 is arranged on one side of the locking bracket 5. When the locking bracket 5 is attached to the front side of the support shell 2, the push-pull electromagnet 10 can drive the lock hook 11 to flip, so that the lock hook 11 is engaged or separated from the lock rod. When the locking device fixes the lifting arm 3, the auxiliary locking unit can also fix the locking bracket 5 at the same time, thereby forming a "double fixation", which greatly improves the fixing effect of the lifting arm 3.

[0031] In one of the embodiments, a limit stopper 13 cooperating with the locking bracket 5 is disposed at the front end of the base 1 , and when the locking bracket 5 is tilted, the limit stopper 13 can resist the bottom end of the locking bracket 5 .

[0032] In one embodiment, a push handle 14 is provided at the rear end of the base 1, and a roller 15 is provided at the bottom side of the base 1. The design of the push handle 14 and the roller 15 greatly improves the flexibility of the device, so that the staff can arrange it easily, and the practicability is high.

[0033] In one embodiment, buffer rubber pads are provided on the limit stopper 13, between the support shell 2 and the base 1, and between the lifting arm 3 and the inner bottom side of the base 1. The design of the buffer rubber pads can buffer the forces between the components, thereby extending the service life of the components.

[0034] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other.

[0035] The terms "upper", "lower", "outer side", "inner side", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish the relative relationship in position if they exist, and do not need to be qualitative. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0036] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A container quay crane spreader drop test auxiliary device, comprising a base (1), characterized in that: A support shell (2) is arranged on the top side of the base (1); a lifting arm (3) capable of being raised or lowered is arranged inside the support shell (2); the lifting arm (3) is used to lift the sling, and a lock hole (203) corresponding to the lifting lock is opened on the top side of the support shell (2); the lifting arm (3) is a hollow structure; a lifting plate (301) capable of being flush with the top side of the support shell (2) is arranged on the top of the lifting arm (3); and the bottom end of the lifting arm (3) is an open structure; a lifting plate (301) capable of being flush with the top side of the support shell (2) is arranged inside the support shell (2); ) inside the support shell (2), the lifting cylinder (4) is fixed to the inner bottom side of the support shell (2), and the piston rod of the lifting cylinder (4) and the inner top side of the lifting arm (3) are separated structures. When the lifting cylinder (4) is extended, the lifting arm (3) can be raised, and when the lifting cylinder (4) is retracted, the lifting arm (3) falls under the action of gravity; a locking device that cooperates with the lifting arm (3) is provided on the support shell (2), and the locking device can limit the lifting arm (3). When the lifting cylinder (4) is retracted, the position of the lifting arm (3) can be fixed by the locking device.

2. The container quay crane hanger drop test auxiliary device according to claim 1, characterized in that: A plurality of support partitions (16) are arranged inside the support shell (2), and a front installation chamber (201) and a rear support chamber (202) are arranged inside the support shell (2) through the support partitions (16). The lifting arm (3) and the lifting cylinder (4) are arranged inside the front installation chamber (201), and the top side of the rear support chamber (202) is used to support the corner of the sling, and the locking hole (203) is arranged on the top side of the rear support chamber (202).

3. The container quay crane hanger drop test auxiliary device according to claim 2, characterized in that: The height of the front installation chamber (201) is greater than the height of the rear support chamber (202), so that the top side of the support shell (2) can form a stepped surface.

4. The container quay crane spreader drop test auxiliary device according to claim 3, characterized in that: A guide block (12) located outside the lifting arm (3) is arranged inside the front installation chamber (201); when the lifting arm (3) is raised or lowered, the guide block (12) can guide and limit the lifting arm (3).

5. A container quay crane hanger drop test auxiliary device according to claim 1 or 4, characterized in that: The locking device comprises a locking bracket (5), the locking bracket (5) being arranged on the front side of the supporting shell (2), the top end of the locking bracket (5) being rotatably connected to the top of the front side of the supporting shell (2), so that the locking bracket (5) can form a flip structure, the top of the locking bracket (5) is provided with a locking tooth arm (6), and a buffer damper (7) is provided between the locking bracket (5) and the supporting shell (2), and the locking bracket (5) can be kept in an inclined state by the buffer damper (7); the front side of the lifting arm (3) is provided with a locking tooth surface (8) corresponding to the locking tooth arm (6), The front side of the support shell (2) is provided with an insertion opening corresponding to the locking tooth arm (6), and the locking tooth arm (6) can mesh with the locking tooth surface (8) through the insertion opening, thereby fixing the position of the lifting arm (3); an electromagnetic lock (9) is provided at the bottom of the front side of the support shell (2), and a groove (501) corresponding to the electromagnetic lock (9) is provided at the bottom of the locking bracket (5). When the electromagnetic lock (9) is energized, it can absorb the locking bracket (5), and at this time, the locking bracket (5) is attached to the front side of the support shell (2), so that the locking tooth arm (6) can mesh with the locking tooth surface (8) after passing through the insertion opening.

6. The container quay crane hanger drop test auxiliary device according to claim 5, characterized in that: An auxiliary locking unit cooperating with the locking bracket (5) is arranged on the support shell (2), and the auxiliary locking unit comprises a push-pull electromagnet (10). The push-pull electromagnet (10) is located on one side of the locking bracket (5) and fixed to the front side of the support shell (2). A locking hook (11) is arranged below the push-pull electromagnet (10). The end of the locking hook (11) away from its hook tip is rotatably connected to the front side of the support shell (2). The structure of the locking hook (11) is rotatably connected to the movable sliding rod of the push-pull electromagnet (10). A locking rod cooperating with the locking hook (11) is arranged on one side of the locking bracket (5). When the locking bracket (5) is in contact with the front side of the support shell (2), the push-pull electromagnet (10) can drive the locking hook (11) to flip, so that the locking hook (11) and the locking rod are engaged or separated.

7. The container quay crane spreader drop test auxiliary device according to claim 6, characterized in that: A limit stop seat (13) matched with the locking bracket (5) is arranged at the front end of the base (1); when the locking bracket (5) is tilted, the limit stop seat (13) can resist the bottom end of the locking bracket (5).

8. The container quay crane spreader drop test auxiliary device according to claim 7, characterized in that: A push handle (14) is provided at the rear end of the base (1), and a roller (15) is provided at the bottom side of the base (1).

9. The container quay crane spreader drop test auxiliary device according to claim 8, characterized in that: Buffer rubber pads are provided on the limit stop seat (13), between the support shell (2) and the base (1), and between the lifting arm (3) and the inner bottom side of the base (1).

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