Lifting appliance suitable for lifting rollers
The lifting device with a triangular frame and adjustable connectors addresses the instability of steel wire methods by providing secure and rapid attachment to roll bearings, enhancing safety and stability during roll transport.
Patent Information
- Application Number
- CN202422393063.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-09-30
AI Technical Summary
The traditional lifting and rolling method has problems such as poor stability in the combination of wire rope and rolling, complex lifting and difficult to control, and great safety hazards.
A sling is designed, adopting a trapezoidal hanging frame and movable connecting components, including a locking pin, a rotating shaft, an upper limit block and a lower limit block. Through the gravity matching of the locking pin, it is possible to automatically enter and exit the bearing box hoisting hole, and combines the guide assembly and a butterfly spring to improve stability and safety.
It achieves improved stability and safety during lifting, and has reliable connections and fast speed, avoiding the risks of rolls falling off and equipment damage.
Smart Images
Figure CN223102528U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of rolling equipment, and particularly relates to a sling suitable for lifting rolls. Background Art
[0002] Rolls are crucial components on the rolling production line and are also the core components that cause plastic deformation of metals. Their performance and quality directly affect the accuracy, surface quality, and production efficiency of rolled products. During the rolling process, rolls will gradually wear due to friction and pressure with metals. Especially when the rolls exhibit failure forms such as cracks, peeling, pitting, sticking, pinching, or breaking, the rolls must be replaced in a timely manner to ensure product quality and production safety. The main way to replace rolls is through lifting. Traditional replacement methods mainly rely on overhead cranes and use wire ropes and slings to bind the rolls for lifting, which have the following main problems: First, due to the presence of oil stains, the surfaces of wire ropes and slings are relatively smooth, and their bonding stability with the rolls and bearing boxes is poor, posing a risk of roll detachment. Second, both wire ropes and slings are flexible materials. Before lifting, the binding length needs to be adjusted to ensure the lifting level, which is a relatively complex process; during the lifting process, the lifting direction is not easy to control and is prone to rotation, thus easily causing the situation of knocking against the rolls or damaging the equipment, and there are also relatively large potential safety hazards. Content of the Utility Model
[0003] The purpose of the utility model is to provide a sling suitable for lifting rolls to solve the problems mentioned in the background art in view of the drawbacks of the prior art.
[0004] The problems of the utility model are solved by the following technical solutions:
[0005] A sling suitable for lifting rolls includes a hanging frame. The upper part of the hanging frame is a trapezoidal structure, and connecting frames are arranged at both ends. The connecting frames are portal structures with open bottoms. The width between the two side columns of the portal structure matches the distance between the two side surfaces of the bearing box. A movable connecting component is arranged at the lower end of the connecting frame. Lifting holes are arranged on both sides of the bearing box. When the connecting component is combined with the lifting holes, the bearing box can be lifted.
[0006] For the above-mentioned sling suitable for lifting rolls, the connecting component is composed of a locking pin, a rotating shaft, an upper limit block, and a lower limit block. The locking pin is rotatably installed on the connecting frame through the rotating shaft. A baffle is arranged on the rotating shaft, and upper and lower limit blocks matching the baffle are arranged on the connecting frame to limit the rotation of the rotating shaft.
[0007] The above-mentioned lifting tool applicable to lifting rolls is provided with a slope on the lower end face of the locking pin, so that the locking pin can enter and disengage from the lifting holes on both sides of the bearing box during the downward movement along with the connecting frame; the cross-sectional dimension of the locking pin is smaller than the dimension of the lifting holes on both sides of the bearing box, so as to ensure that the locking pin can rotate and disengage from the lifting holes during the downward movement along with the connecting frame.
[0008] The above-mentioned lifting tool applicable to lifting rolls is further provided with a guiding assembly on the connecting frame. The guiding assembly is composed of guiding plates. The guiding plates are arranged on the side surface of the connecting frame, and the number of guiding plates is 2. The inner distance between the two guiding plates matches the distance between the outer side surfaces of the two bearing boxes. The lower end of the guiding plate is provided with a first guiding inclined surface, which guides the connecting components on the connecting frame to align with the lifting holes on both sides of the bearing box during the downward movement of the connecting frame.
[0009] The above-mentioned lifting tool applicable to lifting rolls is provided with mounting holes on the hanger. A suspension rod is arranged in the mounting holes. The lower end of the suspension rod is provided with a flange, and the upper end is provided with a lifting lug. A disc spring is arranged between the flange of the suspension rod and the mounting hole of the hanger.
[0010] The above-mentioned lifting tool applicable to lifting rolls is provided with second guiding inclined surfaces at the bottoms of the two side columns of the connecting frame, which is beneficial for the connecting frame to enter both sides of the bearing box. Beneficial effects
[0011] Compared with the prior art, the utility model has the following advantages: First, the upper part of the hanger adopted is of a trapezoidal structure, and connecting frames matching the bearing boxes are arranged at both ends. The rigid-structured hanger is beneficial to the stability of the combination of the hanger and the bearing box, and has reliable connection and fast connection speed. Compared with the traditional method of using steel wires and slings for lifting, it has the characteristics of good stability and high safety. Second, the connecting component adopts a rotatable locking pin, which cooperates with the upper limit block and the lower limit block. During the up and down movement of the locking pin along with the connecting frame, relying on its own gravity and the contact and cooperation with the side surface of the bearing box, it realizes its automatic entry into and disengagement from the lifting holes on the bearing box, and has the characteristics of reliable connection and fast connection speed. Brief description of the drawings
[0012] The following further details the utility model in conjunction with the drawings.
[0013] Figure 1 It is the front view schematic diagram of the overall structure of the utility model;
[0014] Figure 2 It is the side view schematic diagram of the overall structure of the utility model;
[0015] Figure 3 It is the partial structure schematic diagram of the utility model;
[0016] Figure 4 It is another partial structure schematic diagram of the utility model;
[0017] Each label in the figure represents respectively: 1, hanger; 2, connecting frame; 3, bearing box; 4, roll; 5, guiding plate; 1-1, suspension rod; 1-2, lifting lug; 1-3, disc spring; 2-1, locking pin; 2-2, rotating shaft; 2-3, upper limit block; 2-4, lower limit block; 2-5, second guiding inclined plane; 3-1, lifting hole; 5-1, first guiding inclined plane. Specific implementation mode
[0018] The technical solution of the present utility model will be further described in detail below with reference to the accompanying drawings.
[0019] See Figures 1 to 4 , the present utility model includes a hanger 1, the upper part of the hanger 1 is a trapezoidal structure, and connecting frames 2 are arranged at both ends. The connecting frame 2 (the structure of the connecting frame 2 can be seen in Figure 2 ) is a portal structure with an open lower end. The width between the two side columns of the portal structure matches the dimension between the two side surfaces of the bearing box 3. The matching relationship here is: theoretically, the two dimensions can be taken to be equal, but in fact, the width d1 between the two side columns of the portal structure and the dimension d2 between the two side surfaces of the bearing box 3, d1 - d2 can take 5 mm - 10 mm. A movable connecting component is arranged at the lower end of the connecting frame 2, and lifting holes 3-1 are arranged on both sides of the bearing box 3. When the connecting component is combined with the lifting holes 3-1, the bearing box 3 can be lifted. The lifting holes 3-1 can be square holes to facilitate the stability of the combination with the connecting component.
[0020] The connecting component can adopt the following design: The connecting component is composed of a locking pin 2-1, a rotating shaft 2-2, an upper limit block 2-3 and a lower limit block 2-4. The locking pin 2-1 is rotatably installed on the connecting frame 2 through the rotating shaft 2-2. A baffle 2-2-1 is arranged on the rotating shaft 2-2, and upper limit block 2-3 and lower limit block 2-4 matching the baffle 2-2-1 are arranged on the connecting frame 2 to limit the rotation of the rotating shaft 2-2.
[0021] The weight of the above-mentioned locking pin 2-1 is greater than the weight of the baffle 2-2-1, and under the action of gravity, the torque of it on the axis of the rotating shaft 2-2 is greater than the torque of the baffle 2-2-1 on the axis of the rotating shaft 2-2. As Figure 3As shown in the figure, during the downward movement of the locking pin 2-1 along with the connecting frame 2, before it enters the hoisting hole 3-1, under the action of its own gravity, it slides down along the side surface of the bearing housing 3. When it slides to the position of the hoisting hole 3-1, under the action of gravity, it turns into the hoisting hole 3-1. After the hoisting is completed, when the connecting frame 2 moves downward, the locking pin 2-1 can be disengaged from below the hoisting hole 3-1. At this time, there are two solutions to complete the disconnection between the connecting frame 2 and the bearing housing 3. One is to fix the locking pin 2-1 on the lower limit block 2-4. A clamp can be set on the lower limit block 2-4 to clamp the locking pin 2-1 in the clamp, and then the connecting frame 2 is lifted to disengage. The other is that the connecting frame 2 is translated along the axial direction of the roll to achieve disconnection. The function of the upper limit block 2-3: When the connecting frame 2 is lifted for hoisting, the upper end surface of the locking pin 2-1 is in pressing contact with the upper side surface of the hoisting hole 3-1. The upper limit block 2-3 is to limit the rotation of the locking pin 2-1, so as to lift the bearing housing 3 and the roll 4. The function of the lower limit block 2-4: To prevent the locking pin 2-1 from rotating excessively. At the same time, a clamp can be set on the lower limit block 2-4. When hoisting is not required or the connecting frame 2 is disconnected from the bearing housing 3, the locking pin 2-1 is fixed in the clamp to prevent the locking pin 2-1 from rotating.
[0022] To facilitate the entry and disengagement of the locking pin 2-1 from the hoisting hole, the following design can be adopted: A slope 2-1-1 is provided on the lower end surface of the locking pin 2-1 to facilitate the entry and disengagement of the locking pin 2-1 from the hoisting holes on both sides of the bearing housing 3 during the downward movement of the locking pin 2-1 along with the connecting frame 2. The cross-sectional dimension of the locking pin 2-1 is smaller than the dimension of the hoisting holes 3-1 on both sides of the bearing housing 3 to ensure that the locking pin 2-1 can rotate and disengage from the hoisting hole 3-1 during the downward movement of the locking pin 2-1 along with the connecting frame 2.
[0023] To facilitate the entry of the connecting frame 2 into both sides of the bearing housing 3 and the alignment of the connecting component with the hoisting hole 3-1: A guiding component is further provided on the connecting frame 2. The guiding component consists of a guiding plate 5. The guiding plate 5 is arranged on the side surface of the connecting frame 2. The number of guiding plates 5 is 2, and the distance between them is matched with the distance between the outer side surfaces of the two bearing housings 3. A first guiding inclined surface 5-1 is provided at the lower end of the guiding plate 5 to guide the connecting component on the connecting frame 2 to align with the hoisting holes 3-1 on both sides of the bearing housing 3 during the downward movement of the connecting frame 2. When the guiding component is provided, after the hoisting is completed, when the connecting frame 2 is translated along the axial direction of the roll to achieve disconnection, the guiding component will cause interference. The method of "fixing the locking pin 2-1 on the lower limit block 2-4" described above can be adopted, and then the connecting frame 2 is lifted to disengage; or the guiding plate 5 can be movably hinged to the connecting frame 2. During guiding, the guiding plate 5 is fixed. After the guiding is completed, the guiding plate 5 is rotated so as not to affect the translational disconnection of the connecting frame 2 from the bearing housing 3.
[0024] To reduce vibration during the hoisting process, the following design can be adopted: An installation hole is provided on the hanger 1, a suspension rod 1-1 is arranged in the installation hole, a flange is provided at the lower end of the suspension rod 1-1, a lifting lug 1-2 is provided at the upper end, and a disc spring 1-3 is arranged between the flange of the suspension rod 1-1 and the installation hole of the hanger 1.
[0025] To further facilitate the connecting frame 2 to enter both sides of the bearing box 3 from above: Second guiding inclined surfaces 2-5 are provided at the bottoms of the two columns of the connecting frame 2 to facilitate the connecting frame 2 to enter both sides of the bearing box 3.
Claims
1. A lifting tool applicable to lifting rolls, characterized in that, It includes a hanging bracket (1). The upper part of the hanging bracket (1) is of a trapezoidal structure, and connecting brackets (2) are arranged at both ends. The connecting bracket (2) is of a portal structure with an open lower end. The width between the two side columns of the portal structure matches the distance between the two side faces of the bearing box (3). A movable connecting component is arranged at the lower end of the connecting bracket (2). Lifting holes (3-1) are arranged on both sides of the bearing box (3). When the connecting component is combined with the lifting holes (3-1), the bearing box (3) can be lifted.
2. The sling applicable to hoisting rolls according to claim 1, wherein, The connecting component is composed of a locking pin (2-1), a rotating shaft (2-2), an upper limit block (2-3) and a lower limit block (2-4). The locking pin (2-1) is rotatably installed on the connecting bracket (2) through the rotating shaft (2-2). A baffle (2-2-1) is arranged on the rotating shaft (2-2). An upper limit block (2-3) and a lower limit block (2-4) matching the baffle (2-2-1) are arranged on the connecting bracket (2) to limit the rotation of the rotating shaft (2-2).
3. The sling applicable to hoisting rolls according to claim 2, characterized in that, A slope (2-1-1) is arranged on the lower end face of the locking pin (2-1) to facilitate the locking pin (2-1) to enter and disengage from the lifting holes (3-1) on both sides of the bearing box (3) during the downward movement of the connecting bracket (2). The cross-sectional dimension of the locking pin (2-1) is smaller than the dimension of the lifting holes (3-1) on both sides of the bearing box (3) to ensure that the locking pin (2-1) can rotate and disengage from the lifting holes (3-1) during the downward movement of the connecting bracket (2).
4. The sling for hoisting rolls according to claim 1, characterized in that, A guiding component is also arranged on the connecting bracket (2). The guiding component is composed of a guiding plate (5). The guiding plate (5) is arranged on the side face of the connecting bracket (2). The number of the guiding plates (5) is 2. The inner distance between the two guiding plates (5) matches the distance between the outer side faces of the two bearing boxes (3). A first guiding slope (5-1) is arranged at the lower end of the guiding plate (5) to guide the connecting component on the connecting bracket (2) to align with the lifting holes (3-1) on both sides of the bearing box (3) during the downward movement of the connecting bracket (2).
5. The sling applicable to lifting rolls according to claim 1, characterized in that, Mounting holes are arranged on the hanging bracket (1). A suspension rod (1-1) is arranged in the mounting holes. A flange is arranged at the lower end of the suspension rod (1-1), and a lifting lug (1-2) is arranged at the upper end. A disc spring (1-3) is arranged between the flange of the suspension rod (1-1) and the mounting holes of the hanging bracket (1).
6. The sling applicable to hoisting rolls according to claim 1, wherein Second guiding slopes (2-5) are arranged at the bottoms of the two side columns of the connecting bracket (2) to facilitate the connecting bracket (2) to enter both sides of the bearing box (3).