Anti-unhooking lifting appliance of crane
By designing an automated anti-disengagement lifting device, which utilizes a combination of rollers and limit rods, the problem of manual operation required by existing lifting devices has been solved. This achieves automated limiting during the lifting process, prevents disengagement accidents, and improves lifting safety and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG XIECHENG CRANE MASCH CO LTD
- Filing Date
- 2026-03-06
- Publication Date
- 2026-04-10
AI Technical Summary
The existing anti-detachment devices on crane lifting equipment require manual operation, which is cumbersome and prone to failure due to negligence, posing safety hazards and affecting lifting efficiency.
An anti-disengagement lifting device was designed, which uses a combination of rollers, guide plates, limit rods and tension springs to achieve automated limiting and connection between the lifting rod and the hanging frame. The motor drives the chain and counterweight to reduce the swing of the heavy object and enhance stability.
It achieves automated limit switching without manual intervention during hoisting, preventing hook detachment accidents and improving the stability and safety of hoisting operations. It is especially suitable for working conditions with high vibration or complex manual operation.
Smart Images
Figure CN224105427U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of lifting equipment technology, and specifically relates to an anti-disengagement lifting equipment for cranes. Background Technology
[0002] As an important piece of equipment for material handling, the anti-detachment performance of the hook device of a crane is directly related to operational safety. In actual lifting operations, after the hook is connected to the lifting device, the lifting device often comes off the hook opening due to equipment vibration and the swing of the load, which is called "unhooking". Once unhooking occurs, it is very easy for the load to fall, causing equipment damage or even personal injury accidents.
[0003] The anti-detachment device of the transmission lifting hook requires manual insertion of pins or bolts, which is cumbersome and affects the lifting efficiency. Moreover, it is easy for the operator to forget to lock it due to negligence, which poses a risk of human error. In order to solve the above problems, we provide an anti-detachment lifting hook for cranes. Utility Model Content
[0004] The purpose of this utility model is to provide an anti-disengagement lifting device for cranes, so as to solve the problem that the anti-disengagement device of the transmission lifting device proposed in the background art requires manual insertion of pins or bolts, which is cumbersome, affects lifting efficiency, and is easy to forget to lock due to operator negligence, which poses a risk of human error.
[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: an anti-disengagement lifting device for a crane, comprising a trolley frame, channel steels fixedly connected to both sides of the bottom of the trolley frame, a hanger provided between the two channel steels, rollers rotatably connected to both sides of the hanger, the surfaces of the rollers slidingly connected to the channel steels, a hanging plate fixedly connected to both sides of the hanger, a hanging rod fixedly connected inside the hanging plate, a limit rod rotatably connected inside the hanging plate, a connecting rod rotatably connected to one end of the limit rod, a tension spring fixedly connected to the top of the connecting rod, the top of the tension spring fixedly connected to the hanger, a push rod fixedly connected to the top of the connecting rod, pulleys rotatably connected to both ends of the push rod, and a guide plate fixedly connected to the front of the channel steels.
[0006] Preferably, a rotating rod is rotatably connected to the top of the trolley frame, and two sprockets are fixedly sleeved on the surface of the rotating rod. A reducer is fixedly connected to the top of the trolley frame, and the output end of the reducer is bolted to the rotating rod via a coupling. A motor is fixedly connected to the top of the trolley frame, and the output end of the motor is connected to the reducer via a drive shaft. A chain is meshed with the sprockets, one end of the chain is fixedly connected to a hanger, and the other end of the chain is fixedly connected to a frame. Several counterweights are placed inside the frame.
[0007] As preferred, both ends of the frame are rotatably connected with guide wheels, the bottom of the channel steel is fixedly connected with a bottom plate, the trolley frame and the bottom plate are fixedly connected with a guide rod, and the surface of the guide wheel is slidably connected with the guide rod.
[0008] As preferred, the front surface of the channel steel is fixedly connected with a limit sensor.
[0009] As preferred, both sides of the hanger are fixedly connected with supports, the back surface of the support is rotatably connected with an auxiliary wheel, and the surface of the auxiliary wheel is slidably connected with the channel steel.
[0010] The utility model has the following beneficial effects:
[0011] When the device hanger moves downwards in the channel steel through the roller, the pulley contacts with the guide plate, the guide plate guides the pulley, the pulley pushes the connecting rod through the push rod, the connecting rod further pushes the limiting rod, the connecting rod stretches the tension spring at the same time, one end of the limiting rod rotates in the connecting rod, and the limiting rod rotates in the hanging plate at the same time, so that one end of the limiting rod is separated from the top of the hanging rod, the limiting is released, the quick connection of the hanging rod and the hanger is facilitated, when the hanger moves upwards and the pulley is separated from the guide plate, the tension spring resets and drives the connecting rod and the limiting rod to reset, the limiting rod automatically limits the hanger on the surface of the hanging rod, the whole process does not need manual intervention, the automation degree is high, the unhooking accident caused by vibration in the hoisting process can be fundamentally prevented, the stability and reliability of hoisting operation are guaranteed, and the utility model is especially suitable for the working condition that manual hooking of many personnel exists great risk in coating, pickling and shot blasting. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 It is a three-dimensional schematic view of the utility model structure;
[0013] Figure 2 It is a three-dimensional view of the utility model local structure;
[0014] Figure 3 It is a three-dimensional view of the utility model local structure;
[0015] Figure 4 It is a three-dimensional view of the utility model local structure.
[0016] Reference signs: 1, trolley frame; 2, channel steel; 3, hanger; 4, roller; 5, hanging plate; 6, hanging rod; 7, limiting rod; 8, connecting rod; 9, tension spring; 10, push rod; 11, pulley; 12, rotating rod; 13, chain wheel; 14, speed reducer; 15, motor; 16, chain; 17, frame; 18, counterweight; 19, guide wheel; 20, guide rod; 21, bottom plate; 22, limit sensor; 23, support; 24, auxiliary wheel; 25, guide plate. DETAILED DESCRIPTION
[0017] The utility model will be further explained in detail in connection with the drawings.
[0018] Embodiment 1
[0019] Reference Figures 1-4 A kind of anti-unhooking lifting appliance of crane, including trolley frame 1, the bottom of trolley frame 1 Both sides are fixedly connected with channel steel 2, hoisting frame 3 is arranged between two channel steel 2, hoisting frame 3 Both sides are rotatably connected with gyro wheel 4, the surface of gyro wheel 4 is slidably connected with channel steel 2, hoisting frame 3 Both sides are fixedly connected with hanging plate 5, the inside of hanging plate 5 is fixedly connected with suspender 6, the inside of hanging plate 5 is rotatably connected with limit rod 7, limit rod 7 One end is rotatably connected with connecting rod 8, connecting rod 8 Top is fixedly connected with tension spring 9, the top of tension spring 9 is fixedly connected with hoisting frame 3, connecting rod 8 Top is fixedly connected with push rod 10, push rod 10 Both ends are rotatably connected with pulley 11, the front of channel steel 2 is fixedly connected with guide plate 25.
[0020] Specifically, when hoisting frame 3 moves downward in channel steel 2 through gyro wheel 4, pulley 11 contacts with guide plate 25, guide plate 25 guides pulley 11, so that pulley 11 pushes connecting rod 8 through push rod 10, connecting rod 8 further pushes limit rod 7, and connecting rod 8 stretches tension spring 9 at the same time, one end of limit rod 7 rotates in connecting rod 8, and limit rod 7 rotates in hanging plate 5, so that one end of limit rod 7 is separated from the top of suspender 6, and the limitation is released, realizing the quick connection of suspender 6 and hanger, when hoisting frame 3 moves upward, pulley 11 is separated from guide plate 25, tension spring 9 resets and drives connecting rod 8 and limit rod 7 to reset, so that limit rod 7 automatically limits hanger on the surface of suspender 6, the whole process does not need manual intervention, the degree of automation is high, can fundamentally prevent unhooking accident caused by vibration in hoisting process, and guarantees the stability and reliability of hoisting operation.
[0021] Reference Figure 1 、 Figure 3 and Figure 4The top of the trolley frame 1 is rotationally connected with a rotating rod 12, the surface of the rotating rod 12 is fixedly sleeved with two chain wheels 13, the top of the trolley frame 1 is fixedly connected with a speed reducer 14, the output end of the speed reducer 14 is connected with the rotating rod 12 through a shaft coupling, the top of the trolley frame 1 is fixedly connected with a motor 15, the output end of the motor 15 is drivingly connected with the speed reducer 14 through a transmission shaft, the surface of the chain wheel 13 is meshed with a chain 16, one end of the chain 16 is fixedly connected with the hanger 3, the other end of the chain 16 is fixedly connected with a frame 17, a plurality of counterweights 18 are arranged in the frame 17, the motor 15 is started to drive the rotating rod 12 to rotate through the speed reducer 14, so that the rotating rod 12 drives the hanger 3 to move through the chain wheel 13 and the chain 16, the chain 16 synchronously drives the frame 17 and the counterweights 18 to move, the counterweight structure is arranged, the swing of the heavy object is effectively reduced, the stability of the hoisting heavy object is improved, and a brake can be installed on the side of the transmission shaft close to the speed reducer 14, so that the brake function can be effectively achieved.
[0022] With reference to Figure 1 and Figure 3 , both ends of the frame 17 are rotationally connected with guide wheels 19, the bottom of the channel steel 2 is fixedly connected with a bottom plate 21, the trolley frame 1 and the bottom plate 21 are fixedly connected with a guide rod 20, the surface of the guide wheel 19 is slidingly connected with the guide rod 20, when the frame 17 moves, the frame 17 drives the guide wheel 19 to slide on the surface of the guide rod 20, so that the stability of the movement of the frame 17 is improved.
[0023] With reference to Figure 1 , the front surface of the channel steel 2 is fixedly connected with a limit sensor 22, when the hanger 3 contacts the limit sensor 22, the motor 15 can be controlled through the controller, so that the accurate positioning of the descending position of the hanger 3 is realized, the relative height of the hanger 3 and the hanger is controlled, and the hooking and unhooking are facilitated.
[0024] With reference to Figure 2 , both sides of the hanger 3 are fixedly connected with supports 23, the back surface of the support 23 is rotationally connected with auxiliary wheels 24, the surface of the auxiliary wheel 24 is slidingly connected with the channel steel 2, the auxiliary wheel 24 is arranged, so that the stability of the sliding of the hanger 3 and the channel steel 2 is effectively improved, and the phenomenon of falling out of the channel is prevented.
[0025] Brief description of use process: the hanger 3 moves downward in the inside of the channel steel 2 through the roller 4, meanwhile the pulley 11 contacts with the guide plate 25, the guide plate 25 guides the pulley 11, the pulley 11 pushes the connecting rod 8 through the push rod 10, the connecting rod 8 pushes the limiting rod 7, meanwhile the connecting rod 8 stretches the tension spring 9, one end of the limiting rod 7 rotates in the inside of the connecting rod 8, meanwhile the limiting rod 7 rotates in the inside of the hanging plate 5, one end of the limiting rod 7 is separated from the top of the hanger bar 6, and the limiting can be released, the hanger bar 6 is connected with the hanger, when the pulley 11 is separated from the guide plate 25, the tension spring 9 drives the connecting rod 8 and the limiting rod 7 to reset, the limiting rod 7 limits the hanger on the surface of the hanger bar 6, and the unhooking can be effectively avoided.
[0026] The specific embodiment is only an explanation of the utility model, and is not a limitation of the utility model, and a person skilled in the art can make a modification without creative contribution according to the need after reading the specification, but as long as it is in the range of the claims of the utility model, it is protected by the patent law.
Claims
1. Anti-two-block spreader of a crane, comprising a trolley frame (1), characterised in that: The bottom of the trolley frame (1) is fixedly connected with channel steel (2) on both sides, two channel steel (2) is provided with hanging bracket (3), both sides of the hanging bracket (3) are rotatably connected with the roller (4), the surface of the roller (4) is slidably connected with the channel steel (2), both sides of the hanging bracket (3) are fixedly connected with the hanging plate (5), the inside of the hanging plate (5) is fixedly connected with the derrick (6), the inside of the hanging plate (5) is rotatably connected with the limit rod (7), one end of the limit rod (7) is rotatably connected with the connecting rod (8), the top of the connecting rod (8) is fixedly connected with the tension spring (9), the top of the tension spring (9) is fixedly connected with the hanging bracket (3), the top of the connecting rod (8) is fixedly connected with the push rod (10), both ends of the push rod (10) are rotatably connected with the pulley (11), the front of the channel steel (2) is fixedly connected with the guide plate (25).
2. A load holding sling for a hoist according to claim 1, characterised in that: The top of the trolley frame (1) is rotatably connected with the rotating rod (12), the surface of the rotating rod (12) is fixedly sleeved with two sprockets (13), the top of the trolley frame (1) is fixedly connected with the speed reducer (14), the output end of the speed reducer (14) is connected with the rotating rod (12) through the shaft coupling, the top of the trolley frame (1) is fixedly connected with the motor (15), the output end of the motor (15) is drivingly connected with the speed reducer (14) through the transmission shaft, the surface of the sprocket (13) is engaged with the chain (16) through the teeth, one end of the chain (16) is fixedly connected with the hanging bracket (3), the other end of the chain (16) is fixedly connected with the frame (17), the inside of the frame (17) is placed with a plurality of counterweight blocks (18).
3. A load holding sling for a hoist according to claim 2, characterised in that: Both ends of the frame (17) are rotatably connected with the guide wheel (19), the bottom of the channel steel (2) is fixedly connected with the bottom plate (21), the trolley frame (1) and the bottom plate (21) are fixedly connected with the guide rod (20), the surface of the guide wheel (19) is slidably connected with the guide rod (20).
4. A load holding sling for a hoist according to claim 1, characterized in that: The front of the channel steel (2) is fixedly connected with the limit sensor (22).
5. A load holding sling for a hoist according to claim 1, characterized in that: Both sides of the hanging bracket (3) are fixedly connected with the support (23), the back of the support (23) is rotatably connected with the auxiliary wheel (24), the surface of the auxiliary wheel (24) is slidably connected with the channel steel (2).