Width-adjustable lifting appliance

Abstract

A width-adjustable lifting appliance comprises a lifting ring, a support and a force arm, the support comprises a main beam and a cross beam which are fixedly connected, the lower portion of the main beam is fixedly connected to the middle of the cross beam, and the upper portion of the main beam is fixedly connected with the lifting ring; the force arm comprises a fixed force arm and an adjustable force arm which are distributed on the two sides of the main beam, the connecting end of the fixed force arm is fixedly connected with the cross beam, and the adjustable force arm is connected to the cross beam in a sliding mode through a sliding block. The round crystallizer hoisting device can be used for safely hoisting round crystallizers with various sizes, specifications and structural models, and has the characteristics of convenience in use and high safety coefficient.

Description

Technical Field

[0001] The utility model belongs to a lifting tool for the non-ferrous metal casting industry, and particularly relates to a wide-width adjustable lifting tool. Background Art

[0002] The crystallizers for semi-continuous casting of round ingots are divided into various size specifications and structural models according to different alloy characteristics and different customer size requirements. Each type of crystallizer needs to store a different number of round crystallizers according to production arrangements and different usage frequencies. In short, there are nearly a hundred round crystallizers with different size specifications and structural models stored on site. According to the daily maintenance operations of the round crystallizers, dozens of lifting operations are required for the round crystallizers every day. Currently, the rope bundling method is used for lifting, that is, a soft rope with rings at both ends is used to bundle the round crystallizer to be lifted by passing one end through the ring of the other end. This method has the following disadvantages: 1. The operation is not safe. If the bundling is not firm, there is a risk of the round crystallizer falling off. When the lifted round crystallizer swings left and right and back and forth due to inertia during walking, it is easy to injure people or collide with other objects. 2. The work efficiency is low. Each round crystallizer needs several operations for lifting and lowering. 3. The labor intensity is high. Each bundling requires bending down and squatting for frequent operations.

[0003] In view of the above reasons, the existing lifting method needs to be innovated and improved. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a wide-width adjustable lifting tool, which can meet the safe lifting of round crystallizers with various size specifications and structural models, and has the characteristics of convenient use and high safety factor.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is: a wide-width adjustable lifting tool, including a lifting ring, a bracket and a force arm. The bracket includes a main beam and a cross beam fixedly connected. The lower part of the main beam is fixedly connected to the middle of the cross beam, and the upper part of the main beam is fixedly connected to the lifting ring. The force arm includes a fixed force arm and an adjustable force arm distributed on both sides of the main beam. The connecting end of the fixed force arm is fixedly connected to the cross beam, and the adjustable force arm is slidably connected to the cross beam through a slider.

[0006] The fixed force arm and the adjustable force arm are arranged in parallel.

[0007] A limiting block for preventing the slider from detaching from the cross beam is arranged on the cross beam.

[0008] The cross beam is formed by welding two round tubes side by side and fixing them.

[0009] Alternatively, the cross section of the cross beam is rectangular.

[0010] The slider includes two skateboards arranged relatively spaced apart, and holes sleeved on the cross beam are arranged on the skateboards. The connecting end of the adjustable force arm is welded between the two skateboards.

[0011] Both the fixed force arm and the adjustable force arm are formed by welding two round tubes side by side.

[0012] A reinforcing plate is arranged at the connecting position of the cross beam and the fixed force arm.

[0013] The reinforcing plate is a triangular plate, and two right-angle sides are respectively welded and fixed to the cross beam and the fixed force arm.

[0014] The beneficial effects of the present utility model are as follows: By moving the adjustable force arm, the distance between the adjustable force arm and the fixed force arm can be adjusted, so as to realize the adjustment of the wide range of the lifting appliance and meet the safe lifting of round crystallizers with various size specifications and structural models.

[0015] The present utility model adopts a lightweight design, is easy to manufacture, convenient and flexible to use, and easy to maintain; it improves the safety factor, reduces potential safety hazards, improves work efficiency, and reduces labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is the front view of the present utility model;

[0018] Figure 2 It is the left view of the present utility model;

[0019] Figure 3 It is Figure 2 The partial view of the lower part of the present utility model in

[0020] Figure 4 It is the right view of the present utility model;

[0021] Figure 5 It is Figure 4 The partial view of the lower part of the present utility model in

[0022] Figure 6 It is the top view of the present utility model;

[0023] Figure 7 It is the front view of the present utility model in the use state;

[0024] Figure 8Right view of the utility model in the using state;

[0025] Figure 9 Top view of the utility model in the using state;

[0026] Markings in the figure: 1, lifting ring; 2, main beam; 3, cross beam; 4, slider; 5, adjustable force arm; 6, limit block; 7, fixed force arm; 8, reinforcing plate; 9, round mold; 10, flange. Specific embodiments

[0027] The following further elaborates on the present utility model in conjunction with the accompanying drawings and embodiments, but it does not serve as a basis for any restrictions on the utility model.

[0028] Embodiment 1: As Figures 1-6 shown, a wide-width adjustable lifting tool includes a main beam 2 and a cross beam 3 that are perpendicular to each other. The lower end of the main beam 2 is fixedly welded to the middle of the cross beam 3, and a lifting ring 1 is fixed at the upper end of the main beam 2; an adjustable force arm 5 and a fixed force arm 7 are arranged on the cross beam 3. The adjustable force arm 5 and the fixed force arm 7 are respectively located on both sides of the main beam 2, and the adjustable force arm 5 and the fixed force arm 7 are arranged in parallel and are both perpendicular to the cross beam 3. The fixed force arm 7 is fixedly welded to the cross beam 3. The connecting end of the adjustable force arm 5 is fixedly welded to a slider 4. The slider 4 is slidably arranged on the cross beam 3, and a limit block 6 that prevents the slider 4 from further sliding and detaching from the cross beam 3 is arranged at the end of the cross beam 3.

[0029] The cross beam 3 is formed by welding two identical round steel pipes in parallel side by side. The slider 4 is provided with a long hole, and the long hole matches the cross-sectional dimension of the cross beam 3. The slider 4 slides along the cross beam 3 through the long hole, and the long hole and the cross beam 3 can restrict each other to prevent the adjustable force arm 5 from rotating on the cross beam 3.

[0030] Further, the slider 4 includes two sliding plates, and the long holes are respectively arranged on the two sliding plates. The connecting end of the adjustable force arm 5 is arranged between the two sliding plates.

[0031] Further, both the adjustable force arm 5 and the fixed force arm 7 are formed by welding two round steel pipes in parallel side by side, having stronger supporting ability and improving the safety of the lifting tool.

[0032] Further, a reinforcing plate 8 is also fixed at the connection position between the fixed force arm 7 and the cross beam 3. The reinforcing plate 8 is fixedly welded to both the fixed force arm 7 and the cross beam 3 to enhance the support of the fixed force arm 7. The reinforcing plate 8 is a triangular plate, and its two right-angle sides are respectively welded to the fixed force arm 7 and the cross beam 3.

[0033] In other embodiments, the cross beam 3 may also be a hollow metal tube or a solid metal rod with a rectangular cross-section. Accordingly, a rectangular hole adapted to the cross-sectional shape of the cross beam 3 is provided on the slide plate of the slider 4 to prevent the rotation of the adjustable force arm 5 by using the rectangular hole.

[0034] Embodiment 2: As Figures 7-9 shown, taking the hoisting of a round mold with a hoisting specification of φ295 mm as an example, the usage method of the present invention will be described.

[0035] Outer diameter dimension of the round mold: φ385mm, height: 284mm, outer diameter dimension of the flange: φ580mm.

[0036] First, hang the lifting ring 1 of the lifting tool of the present invention on the hook of the overhead crane, hold the main beam 2 by hand, so that the fixed force arm 7 is located below the flange 10 of the round mold 9 and closely abuts one side of the outer shell of the round mold 9. Then move the adjustable force arm 5 so that the adjustable force arm 5 closely abuts the other side of the outer shell of the round mold 9. At this time, the opening of the lifting tool is 385mm, and then the lifting tool can be lifted to hoist the round mold 9 to the designated position. After confirming that the round mold 9 lands smoothly, lower the lifting tool, move the adjustable force arm 5 outward to increase the opening of the lifting tool, and then start the overhead crane again to drive the lifting tool away from the round mold 9 and transfer it to a safe position, that is, a hoisting operation of a round mold with a φ295 mm specification is completed. The whole operation process is safe, convenient and efficient.

[0037] Wherein, the opening of the lifting tool refers to the distance between the fixed force arm 7 and the adjustable force arm 5.

[0038] The present invention can also hoist round molds of other size specifications. For example, when hoisting a round mold with a φ360 mm specification, the outer diameter dimension of this specification of round mold is: φ454mm, height: 269mm, and the outer diameter dimension of the flange is: φ690mm. The hoisting process is the same as that of hoisting a round mold with a φ295 mm specification, except that the opening of the lifting tool needs to be adjusted to match the outer diameter of the shell of the round mold with a φ360 mm specification, that is, 454mm.

[0039] The above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Those of ordinary skill in the art should understand that the specific implementation manners of the present invention can be modified or equivalently replaced by referring to the above embodiments. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention is within the scope of the claims pending for approval.

Claims

1. A wide adjustable sling, comprising a sling ring, a bracket and a lever arm, characterized in that: The bracket includes a main beam and a cross beam that are fixedly connected, the lower part of the main beam is fixedly connected to the middle part of the cross beam, and the upper part of the main beam is fixedly connected to the lifting ring; the force arm includes a fixed force arm and an adjustable force arm distributed on both sides of the main beam, the connecting end of the fixed force arm is fixedly connected to the cross beam, and the adjustable force arm is slidably connected to the cross beam through a slider.

2. The wide adjustable sling according to claim 1, characterized in that: The fixed force arm and the adjustable force arm are arranged in parallel.

3. The wide adjustable sling according to claim 1, characterized in that: The crossbeam is provided with a limiting block to prevent the sliding block from detaching from the crossbeam.

4. The wide adjustable sling according to claim 1, characterized in that: The crossbeam is formed by welding and fixing two round tubes side by side.

5. The wide adjustable sling according to claim 1, characterized in that: The cross section of the cross beam is rectangular.

6. The wide adjustable sling according to claim 4 or 5, characterized in that: The sliding block comprises two sliding plates which are arranged at a relative interval. The sliding plates are provided with holes which are sleeved on the crossbeam. The connecting end of the adjustable force arm is welded between the two sliding plates.

7. The wide adjustable sling according to claim 1, characterized in that: The fixed force arm and the adjustable force arm are both formed by welding two round tubes side by side.

8. The wide adjustable sling according to claim 1, characterized in that: A reinforcing plate is provided at the connection position between the cross beam and the fixed force arm.

9. The wide adjustable sling according to claim 8, characterized in that: The reinforcing plate is a triangular plate, and two right-angled sides are respectively welded and fixed to the crossbeam and the fixed force arm.

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