Factory crane sling locking device

Abstract

The utility model relates to the technical field of cranes, in particular to a factory crane lifting appliance locking device which comprises a lifting appliance body and two lifting claws rotatably arranged on the lifting appliance body, the two lifting claws are oppositely arranged and can be relatively close to or far away from each other, and a round hole for lifting goods is formed after the two lifting claws are close to each other. A driving rod and driving equipment used for driving the driving rod to slide are arranged on the lifting appliance body in a sliding mode, the driving rod is located between the two lifting claws, and protruding parts are arranged on the lifting claws. The driving rod slides, so that the driving rod pushes and abuts against the protruding part to drive the lifting claws to rotate, and the two lifting claws get close to each other or get away from each other; according to the utility model, the locking rod on the locking assembly is inserted between the two lifting claws, so that the locking between the two lifting claws is realized, meanwhile, the simple driving principle is very suitable for being used in an unmanned operation factory, the manual intervention is reduced, and the use safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, in particular to a locking device for a factory crane hoist. Background Art

[0002] Cranes are the common name for cranes such as cranes, overhead cranes, and overhead cranes. Cranes are widely used in metallurgical industry production and have the functions of lifting billets, coils, and rolls. Traditional cranes generally do not have automatic positioning functions, and can only be lifted by the crane driver by visually observing the crane position and hook height. The work efficiency is low, the labor cost is high, and there are certain safety hazards. In recent years, due to the continuous improvement of the level of informatization and the popularization and application of ERP and MES systems, unmanned cranes rely on the application of automation technology and intelligent warehouse management systems in warehouse management to realize the functions of unmanned operation, precise positioning, and automatic lifting. Among them, accurate positioning of the exact position of the material is a prerequisite for automatic lifting, and automatic and safe lifting is the operation guarantee of unmanned cranes. At present, in order to ensure that the crane's hoist can be safely lifted and lowered automatically, a self-locking device needs to be set, which can prevent the hoisted object from slipping or falling off during the lifting process, improving the safety of the lifting operation. At the same time, once an abnormal situation occurs in the hoist, the self-locking device will automatically play a role without manual intervention, improving the convenience and efficiency of operation. Finally, the self-locking device has a simple structure, reliable operation, usually does not require additional maintenance, has a long service life, and is suitable for unmanned factories.

[0003] For example, Chinese patent CN202023067638.7 discloses an automatic locking structure for a crane sling, including a sling body, a fixing mechanism, an anti-falling mechanism and a clamping mechanism, wherein a first rotating shaft is installed inside the sling body, and a movable wheel is installed inside the first rotating shaft, a fixing bar is installed outside the first rotating shaft, the fixing mechanism is sleeved on the outside of the fixing bar, and a limiting block is welded on the outside of the fixing bar, a second rotating shaft is installed on the inside of the fixing bar, and a movable block is installed on the outside of the second rotating shaft, a hook is welded at the bottom end of the movable block, the anti-falling mechanism is welded on the outside of the hook, and the clamping mechanism is welded on the outside of the fixing bar. The sling of the above patent is provided with an automatic locking structure, which can automatically lift and prevent goods from falling off, but manual disassembly of goods is required, which is not suitable for unmanned factories.

[0004] Therefore, it is necessary for those skilled in the art to provide a locking device for a factory crane hoist to realize automatic lifting, locking and releasing of the cargo suspension without human operation and ensure the stability of the suspension. Utility Model Content

[0005] The utility model aims to provide a locking device for a factory crane hoist, so as to solve the technical problem that the crane hoist in the prior art cannot be automatically hoisted and locked and is not suitable for unmanned factories.

[0006] The technical solution adopted by the utility model to solve its technical problems is: a factory crane sling locking device, comprising a sling body and two lifting claws rotatably arranged on the sling body, the two lifting claws are arranged opposite to each other and can be relatively close to or far away from each other, and a round hole for lifting goods is formed when the two lifting claws are close to each other, a driving rod and a driving device for driving the driving rod to slide are slidably provided on the sling body, the driving rod is located between the two lifting claws, and a protrusion is provided on the lifting claw. Sliding the driving rod can make the driving rod push against the protrusion to drive the lifting claw to rotate, thereby making the two lifting claws approach or move away from each other.

[0007] Furthermore, the driving rod includes a push section, and racks are provided on opposite sides of the push section. A gear part with teeth is provided on the two hanging claws, and the protrusion is composed of the teeth, and the rack is meshed with the teeth.

[0008] Furthermore, the driving rod includes a pushing section, the protruding portion is a protrusion protruding on the lifting claw, the lower end of the pushing section can push the protrusion to make the two lifting claws move away from each other, and after the driving rod is separated from the protrusion, the two lifting claws approach each other under the action of their own weight.

[0009] Furthermore, the driving rod further comprises a sliding section connected to the pushing section, a through hole is provided on the hanger body, and the sliding section is slidably connected to the through hole.

[0010] Furthermore, a rotating portion is provided on one end of the hanging claw away from the circular hole, the protruding portion is arranged on the rotating portion, and the rotating portion rotates around the rotation center of the hanging claw.

[0011] Furthermore, a rotation groove is provided on the sling body, a rotation shaft is installed in the rotation groove, and the lifting claw is rotatably sleeved on the rotation shaft.

[0012] Furthermore, a locking assembly is provided on at least one of the two lifting claws, and the locking assembly includes a locking rod and a locking driving component for driving the locking rod to move, the locking driving component is installed on one of the lifting claws, and a locking hole is provided on the other lifting claw, and the locking rod can be inserted into the locking hole when the two lifting claws are close to each other.

[0013] Furthermore, groove-shaped lifting parts are formed on the opposite surfaces of the two lifting claws, and the circular hole is composed of the two lifting parts.

[0014] The beneficial effects of the utility model are as follows: the utility model arranges a locking assembly on the lifting claw, so that the locking rod on the locking assembly is inserted between the two lifting claws to achieve locking between the two lifting claws, and the contraction setting of the locking rod effectively limits the rotation of the two lifting claws. At the same time, its simple driving principle is extremely suitable for operation in an unmanned factory using an electric control system, which reduces manual intervention and improves safety in use. The simple structure is also convenient for replacement and maintenance, thereby improving the stability and service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a stereoscopic diagram of a locking device for a factory crane hoist of the utility model.

[0016] Figure 2 It is a front view of the locking device of the factory crane hoist of the utility model.

[0017] Figure 3 It is a top view of the locking device of the factory crane hoist of the utility model.

[0018] Figure 4 yes Figure 3 Section view along AA.

[0019] The markings of the components in the accompanying drawings are as follows: 10, sling body; 11, lifting claw; 12, lifting part; 13, rotating part; 14, rotating groove; 15, rotating shaft; 16, through hole; 17, driving rod; 171, pushing section; 172, sliding section; 18, gear part; 19, locking hole; 20, locking assembly; 21, telescopic cylinder; 22, locking rod. DETAILED DESCRIPTION

[0020] Now the utility model is described in detail with reference to the accompanying drawings. This figure is a simplified schematic diagram, which only illustrates the basic structure of the utility model in a schematic manner, so it only shows the components related to the utility model.

[0021] Embodiment 1:

[0022] See also Figure 1 , Figure 2 The utility model provides a factory crane sling locking device, comprising a sling body 10 and a sling claw 11 rotatably arranged at the end of the sling body 10, wherein two sling claws 11 are provided and symmetrically arranged. A sling portion 12 is provided on the opposite surfaces of the two sling claws 11, and the sling portion 12 is in a groove shape. The two oppositely arranged sling portions 12 are combined to form a round hole for clamping and hoisting goods.

[0023] Furthermore, a rotation groove 14 is opened on the end face of the sling body 10, and the lifting claw 11 is rotatably arranged in the rotation groove 14. A through hole 16 is provided on the end face of the sling body 10 away from the rotation groove 14. The through hole 16 passes through the wall of the sling body 10 and is connected to the rotation groove 14. A driving rod 17 is telescopically provided in the through hole 16.

[0024] See also Figure 3 , Figure 4 A rotating portion 13 is provided on the end of the lifting claw 11 away from the lifting portion 12, and a rotating shaft 15 is provided in the rotating groove 14 on the sling body 10. The rotating portion 13 of the lifting claw 11 is connected to the rotating shaft 15 and rotates around the axis of the rotating shaft 15.

[0025] When in use, the driving rod 17 pushes against the rotating part 13, thereby causing the hanging claws 11 to rotate in the hanger body 10. One end of the two hanging claws 11 is pushed against by the driving rod 17 at the same time, thereby causing the ends of the two hanging claws 11 away from the driving rod 17 to open and close to each other.

[0026] In this embodiment, the driving rod 17 includes a push section 171 and a sliding section 172. The push section 171 is provided with a rack. The push section 171 is located in the rotating groove 14. The sliding section 172 is connected in cooperation with the through hole 16. The two rotating parts 13 have gear parts 18 on the opposite surfaces. The gear part 18 is semicircular and has teeth. The axis of the gear part 18 coincides with the axis of the rotating shaft 15. When the gear part 18 rotates, the hanging claw 11 rotates coaxially to ensure the stability of movement.

[0027] The push section 171 of the driving rod 17 is slidably disposed between the two gear parts 18, and the rack on the push section 171 is matched and connected with the teeth on the gear part 18. It is used to drive the gear part 18 to rotate. When the utility model is in use, a driving device such as a hydraulic cylinder is used to drive the driving rod 17 to telescopically slide inside the sling body 10, and the driving rod 17 is fixedly connected to the telescopic rod of the hydraulic cylinder. The push section 171 on the driving rod 17 is matched and connected between the two rotating parts 13 and drives the rotating part 13 to rotate, and the two lifting claws 11 rotate accordingly, thereby opening and closing the lifting parts 12 on the two lifting claws 11, so as to realize the grabbing and releasing of materials.

[0028] Please refer again Figure 1 , Figure 4 The hanging claw 11 is provided with a locking hole 19 , and one hanging claw 11 is provided with two locking holes 19 , and the locking hole 19 on one hanging claw 11 corresponds to the locking hole 19 on the other hanging claw 11 .

[0029] A locking assembly 20 is provided on the side wall of the lifting claw 11, and the locking assembly 20 includes a telescopic cylinder 21 and a locking rod 22 fixedly connected to the telescopic rod of the driving rod 21. The locking rod 22 passes through the locking hole 19 on one lifting claw 11 and can extend into the locking hole 19 on the other lifting claw 11.

[0030] When in use, when the two lifting claws 11 are separated from each other, the locking rod 22 is located in one lifting claw 11, and when the two lifting claws 11 are closed to each other, the axis of the locking hole 19 on one lifting claw 11 coincides with the locking hole 19 on the other lifting claw 11. At this time, the telescopic cylinder 21 is driven, and the locking rod 22 extends from the locking hole 19 on one lifting claw 11 to the locking hole 19 on the other lifting claw 11 to complete the locking.

[0031] The utility model drives the locking rod 22 to move between the two lifting claws 11 to achieve locking between the two lifting claws 11. When used in an unmanned factory, the locking assembly 20 and the driving rod 17 can be directly controlled by the electric control system, which reduces manual intervention and improves safety in use. At the same time, the locking assembly 20 is separately installed on the lifting claws 11, and the locking rod 22 can be slidably arranged between the two lifting claws 11. When damage occurs, it is only necessary to disassemble the locking assembly 20 or the lifting claw 11 separately to complete replacement or maintenance, which greatly improves the convenience of disassembly and maintenance.

[0032] The specific operation method of the utility model is: the driving device is used to drive the driving rod 17 to extend out from the sling body 10, the pushing section 171 on the driving rod 17 is connected between the two gear parts 18 and drives the gear part 18 to rotate, and the two lifting claws 11 follow the rotation and separate from each other, thereby opening the lifting parts 12 on the two lifting claws 11. At this time, the locking rod 22 is retracted into the locking hole 19 on the lifting claw 11.

[0033] Continue to drive the driving device, the driving rod 17 is retracted into the sling body 10, the pushing section 171 on the driving rod 17 is separated from the gear part 18, and the two lifting claws 11 approach each other and close to each other under the influence of their own weight. At this time, the telescopic cylinder 21 is driven, and the locking rod 22 extends from the locking hole 19 on one lifting claw 11 to the locking hole 19 on the other lifting claw 11, thereby completing the locking of the lifting claw 11.

[0034] The utility model provides a locking assembly 20 on the lifting claw 11, so that the locking rod 22 on the locking assembly 20 is inserted between the two lifting claws 11 to achieve locking between the two lifting claws 11. The contraction setting of the locking rod 22 effectively limits the rotation of the two lifting claws 11. At the same time, its simple driving principle is extremely suitable for operation in an unmanned factory using an electric control system, which reduces manual intervention and improves safety in use. The simple structure is also convenient for replacement and maintenance, thereby improving the stability and service life of the equipment.

[0035] Embodiment 2:

[0036] Compared with the first embodiment, the second embodiment omits the rotating part 13, replaces the gear part 18 with a protruding part, and the driving rod 17 includes a pushing section 171 and a sliding section 172. The end surface of the abutting section 171 abuts against the two protruding parts at the same time, and the sliding section 172 is connected in a cooperative manner in the through hole 16. Sliding the driving rod can make the driving rod push against the protruding part to drive the hanging claw to rotate, thereby making the two hanging claws approach or move away from each other.

[0037] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A factory crane lifting device locking device, characterized in that: The sling body comprises a sling main body and two lifting claws rotatably arranged on the sling main body, the two lifting claws are arranged opposite to each other and can be relatively close to or far away from each other, and a round hole for lifting goods is formed when the two lifting claws are close to each other, a driving rod and a driving device for driving the driving rod to slide are slidably provided on the sling main body, the driving rod is located between the two lifting claws, and a protrusion is provided on the lifting claws. Sliding the driving rod can make the driving rod push against the protrusion to drive the lifting claws to rotate, thereby making the two lifting claws approach or move away from each other.

2. The locking device for factory crane hoist as claimed in claim 1, characterized in that: The driving rod comprises a push section, and racks are provided on opposite sides of the push section. A gear part with teeth is provided on the two hanging claws, and the protrusion is composed of the teeth, and the rack is meshed with the teeth.

3. The locking device for factory crane hoist as claimed in claim 1, characterized in that: The driving rod comprises a pushing section, the protruding portion is a protrusion protruding on the hanging claw, the lower end of the pushing section can push against the protrusion to make the two hanging claws move away from each other, and after the driving rod is separated from the protrusion, the two hanging claws move closer to each other under the action of their own weight.

4. The locking device for a factory crane hoist as claimed in claim 2 or 3, characterized in that: The driving rod further comprises a sliding section connected to the pushing section, a through hole is provided on the sling body, and the sliding section is slidably connected to the through hole.

5. The locking device for factory crane hoist as claimed in claim 1, characterized in that: A rotating part is provided on one end of the hanging claw away from the circular hole, the protruding part is arranged on the rotating part, and the rotating part rotates around the rotation center of the hanging claw.

6. The locking device for factory crane hoist as claimed in claim 5, characterized in that: The sling body is provided with a rotation groove, a rotation shaft is installed in the rotation groove, and the lifting claw is rotatably sleeved on the rotation shaft.

7. The factory crane lifting device locking device according to any one of claims 1, 2, 3, 5, and 6, characterized in that: A locking assembly is provided on at least one of the two lifting claws, and the locking assembly includes a locking rod and a locking driving component for driving the locking rod to move. The locking driving component is installed on one of the lifting claws, and a locking hole is provided on the other lifting claw. The locking rod can be inserted into the locking hole when the two lifting claws are close to each other.

8. The locking device for factory crane hoist as claimed in claim 1, characterized in that: Groove-shaped hanging parts are formed on the opposite surfaces of the two hanging claws, and the circular hole is composed of the two hanging parts.

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