CN204281088U - A kind of anti-sway device for hoisting crane - Google Patents

Abstract

The utility model relates to the technical field of hoisting, in particular to an anti-swing device for a crane, which includes a pulley and a pulley seat supporting the pulley, the pulley seat is arranged on the crane hanger, and the pulley seat is provided with a There are brakes for braking the pulleys. The inventor found that in the pulley structure of the current crane, there is no brake device for braking the pulley. During the hoisting process, when the hoisted object is subjected to its own inertia or external force, the hoisted object swings. At this time, the pulley Rolling on the wire rope with the swing of the hoisted object, due to the rolling friction between the pulley and the wire rope, the friction generated by it is small, which cannot generate enough resistance to the pulley, and thus cannot effectively reduce the weight of the hoisted object. swing amplitude.

Description

An anti-swing device for a crane

technical field

The utility model relates to the technical field of hoisting, in particular to an anti-swing device for a crane.

Background technique

Present crane all is to adopt steel wire rope to walk around pulley, drives suspension hook or spreader lifting to realize hoisting operation by pulley lifting. During the hoisting process, especially when the hook or sling is at the bottom end, due to the long release length of the wire rope, when the hoisted object is subjected to external force, such as wind blowing or collision, the hoisted object is prone to appear larger. amplitude swing; or when the hoisted object moves too fast in the horizontal direction, under the action of inertia, the hoisted object is also prone to relatively large swings, causing the hoisted object to easily collide with other equipment or objects during the hoisting process. The collision makes the whole hoisting process unsafe, and also increases the difficulty of alignment, increases alignment time, and reduces hoisting efficiency.

Therefore, there is an urgent need for a device for a crane that can effectively prevent the swaying of the object being hoisted.

Contents of the invention

The purpose of this utility model is to provide a device for cranes that can effectively prevent the objects to be hoisted from swinging and shaking, aiming at the above-mentioned shortcomings existing in the current crane structure.

In order to achieve the above object, the technical solution adopted by the utility model is:

An anti-sway device for a crane, comprising a pulley and a pulley seat supporting the pulley, the pulley seat is arranged on a crane spreader, and a brake for braking the pulley is provided on the pulley seat device. In the long-term research, the inventor found that the pulley structure of the current crane does not have a brake device for braking the pulley. During the hoisting process, when the hoisted object is subjected to its own inertia or external force, the hoisted object will swing. At this time, the pulley rolls on the wire rope with the swing of the hoisted object. Since there is rolling friction between the pulley and the wire rope, the friction force generated by it is small, and it cannot generate enough resistance to the pulley, and thus cannot effectively reduce the load. The swing amplitude of the hoisted object is small; in the utility model, a braking device is set, and when the hoisted object has a relatively large swing, the braking device is activated to brake the pulley. At this time, the pulley and the wire rope between Rolling friction becomes sliding friction, which directly increases the friction between the wire rope and the pulley, so that the pulley can only slide on the wire rope with the swing of the object being hoisted, changing the original rolling friction into sliding friction, which greatly improves the The friction between the pulley and the wire rope will generate greater resistance to the sliding of the pulley, so as to gradually reduce the swing range of the lifted object, thereby effectively preventing the swing of the lifted object and improving the safety during the lifting process. It also reduces the difficulty of aligning the spreader and improves the lifting efficiency.

Preferably, the brake device includes a support frame and a brake disc, the support frame is arranged on the pulley seat, the brake disc cooperates with the pulley, the support frame and the brake disc A telescoping device is arranged between the discs, and the telescoping device controls the brake disc to compress or break away from the pulley. The contact and separation of the brake disc and the pulley is controlled by the telescopic device, so as to realize the braking of the brake disc to the pulley.

Preferably, the brake disc is located above the pulley, the brake disc matches the arc-shaped edge of the upper half of the pulley, and the telescopic device expands and contracts along the radial direction of the pulley. The telescopic device pushes the brake disc and the pulley to compress or disengage to realize the braking of the pulley. Since the edge of the brake disc and the pulley fits together, compared with other parts, it can generate the largest braking force and improve the braking effect. Ensure reliability during braking.

Preferably, a clamping device is also provided on the pulley seat, and the clamping device includes a clamping part for clamping the wire rope, and a driving device for driving the opening and closing of the clamping part, and the clamping part is Normally open state. Although the brake disc can brake the pulley, the pulley can still slide on the wire rope with the swing of the hoisted object, so through the clamping device, when the hoisted object is placed in translation or alignment, the clamping part is driven by the driving device Clamped on the wire rope, the relative position between the pulley seat and the wire rope is fixed, and the relative position between the pulley and the wire rope is directly fixed, further reducing the swing range of the hoisted object, and can make the hoisted object in the swing The object quickly returns to the static state, which further effectively prevents the swaying of the object being hoisted, improves the safety during the hoisting process, reduces the difficulty of alignment, and improves the hoisting efficiency.

Preferably, there are two clamping devices, one clamping device corresponds to the steel wire rope on one side of the pulley, the other clamping device corresponds to the steel wire rope on the other side of the pulley, and the two clamping devices The holding devices are respectively matched with the corresponding steel wire ropes. Arrange two clamping devices. When the wire rope bypasses the pulley, the steel wire ropes on both sides of the pulley correspond to a clamping device. When the pulley needs to be braked, the two clamping devices and the braking device are activated together to directly make the pulley and the pulley The relative positions between the steel wire ropes are fixed, and the steel wire ropes are clamped by two clamping devices, which ensures the stability of their fixation.

In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

The brake device is installed. When the object to be hoisted has a relatively large swing, the brake device is activated to brake the pulley, which effectively prevents the object from being hoisted from swinging and shaking, improves the safety during the hoisting process, and reduces the alignment. Difficulty, improve hoisting efficiency.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a structural schematic diagram of another perspective of the utility model;

Fig. 3 is a structural schematic diagram of the cooperation between the steel wire rope and the clamping part,

Marks in the figure: 1-pulley, 2-pulley seat, 3-spreader, 4-braking device, 5-wire rope, 6-clamping device, 41-support frame, 42-brake disc, 43-telescopic device, 61-clamping part, 62-driving device.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in detail.

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

A kind of anti-swing device for crane as shown in the figure, comprises pulley 1 and the pulley seat 2 that supports described pulley 1, and described pulley seat 2 is arranged on the spreader 3 of crane, on described pulley seat 2 A braking device 4 is provided for braking the pulley 1 . In the long-term research, the inventor found that the current pulley structure of the crane does not have a brake device for braking the pulley 1. During the hoisting process, when the hoisted object is subjected to its own inertia or external force, the hoisted object will be damaged. At this time, the pulley 1 rolls on the wire rope 5 with the swing of the hoisted object. Since there is rolling friction between the pulley 1 and the wire rope 5, the friction force generated by it is small, and it cannot generate enough resistance to the pulley 1. And then can not effectively reduce the swing amplitude of the hoisted object; in the utility model, a brake device 4 is set, and when the hoisted object has a relatively large swing, the brake device 4 is started to brake the pulley 1, At this time, the rolling friction between the pulley 1 and the wire rope 5 becomes a sliding friction, which directly increases the friction between the wire rope 5 and the pulley 1, so that the pulley 1 can only slide on the wire rope 5 with the swing of the hoisted object , changing the original rolling friction into sliding friction, which greatly increases the friction between the pulley 1 and the wire rope 5, and then produces greater resistance to the sliding of the pulley 1, and achieves the purpose of gradually reducing the swing range of the hoisted object. Furthermore, the swinging and shaking of the hoisted object is effectively prevented, the safety in the hoisting process is improved, and the difficulty of alignment of the sling 3 is also reduced, and the hoisting efficiency is improved.

Preferably, the brake device 4 includes a support frame 41 and a brake disc 42, the support frame 41 is arranged on the pulley seat 2, the brake disc 42 is matched with the pulley 1, the A telescoping device 43 is provided between the support frame 41 and the brake disc 42 , and the telescoping device 43 controls the brake disc 42 to compress or separate from the pulley 1 . The contact and separation of the brake disc 42 and the pulley 1 is controlled by the telescopic device 43 , so that the braking of the pulley 1 by the brake disc 42 is realized.

Preferably, the brake disc 42 is located above the pulley 1, the brake disc 42 matches the arc-shaped edge of the upper part of the pulley 1, and the telescopic device 43 moves along the pulley 1. Radial expansion. The telescopic device 43 pushes the brake disc 42 to compress or disengage from the pulley 1 to achieve braking on the pulley 1. Since the brake disc 42 is attached to the edge of the pulley 1, compared with other parts under the same pressure, it can produce The maximum braking force improves the braking effect and ensures the reliability of braking.

Preferably, the pulley base 2 is also provided with a clamping device 6, the clamping device 6 includes a clamping part 61 for clamping the wire rope 5, and a driving device 62 for driving the clamping part 61 to open and close. , the clamping portion 61 is in a normally open state. Although the brake disc 42 can brake the pulley 1, the pulley 1 can still slide on the wire rope 5 with the swing of the hoisted object, so through the clamping device 6, when the hoisted object is placed in translation or alignment, it can be driven The device 62 drives the clamping part 61 to clamp on the steel wire rope 5, so that the relative position between the pulley seat 2 and the steel wire rope 5 is fixed, and the relative position between the pulley 1 and the steel wire rope 5 is directly fixed, further reducing the number of hoisted objects. swing range, and can quickly return the object being hoisted to a static state during the swing, further effectively preventing the swaying of the hoisted object, improving the safety during the hoisting process, reducing the difficulty of alignment, and improving hoisting efficiency .

Preferably, there are two clamping devices 6, one clamping device 6 corresponds to the steel wire rope 5 on one side of the pulley 1, and the other clamping device 6 corresponds to the steel wire rope 5 on the other side of the pulley 1. Correspondingly, the two clamping devices 6 cooperate with the corresponding steel wire ropes 5 respectively. Two clamping devices 6 are arranged. When the wire rope 5 bypasses the pulley 1, the steel wire ropes 5 on both sides of the pulley 1 correspond to a clamping device 6 respectively. When the pulley 1 needs to be braked, the two clamping devices 6 and the brake The device 4 is started together to directly fix the relative position between the pulley 1 and the steel wire rope 5, and the steel wire rope 5 is clamped by two clamping devices 6 to ensure the stability of its fixation.

All modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (5)

1., for an anti-sway device for hoisting crane, include the pulley base of pulley and the described pulley of support, described pulley base is arranged on the suspender of hoisting crane, it is characterized in that, described pulley base is provided with the brake equipment for braking pulley.

2. anti-sway device according to claim 1, it is characterized in that, described brake equipment includes bracing frame and brake disc, support frame as described above is arranged on described pulley base, described brake disc matches with described pulley, be provided with retractor device between support frame as described above and described brake disc, described retractor device controls described brake disc and compresses or depart from described pulley.

3. anti-sway device according to claim 2, is characterized in that, described brake disc is positioned at the top of described pulley, and described brake disc matches with the circular arc rim of described pulley the first half, and described retractor device is along the radial expansion of described pulley.

4. anti-sway device according to claim 3, it is characterized in that, described pulley base is also provided with holding device, and described holding device includes the holding part for clamped wire rope, and driving the actuating device of described holding part folding, described holding part is normally open.

5. anti-sway device according to claim 4, it is characterized in that, described holding device is two, one of them holding device is corresponding with the steel rope of described pulley side, another holding device is corresponding with the steel rope of described pulley opposite side, and two described holding devices match with each self-corresponding steel rope respectively.