A hoisting device for surface strengthening treatment of a ball mill liner

Abstract

The utility model discloses a kind of hoisting devices for surface strengthening treatment of ball mill lining plate, it is related to the technical field of lining plate production and processing equipment, including multiple vertical rods and support rods, the vertical rod upper end is equipped with the lifting ring for connecting hoisting equipment, the vertical rod lower end is equipped with limit block, support rod upper surface is equipped with chute, and end is open, and is arranged along its axial direction, limit block and chute constitute sliding connection pair, for realizing the detachable connection of vertical rod and support rod and vertical limit, movable block that can move along vertical rod axial direction is equipped on vertical rod body, for driving vertical rod and support rod relative movement when moving downward and abutting lining plate upper surface, to jointly hold lining plate;The utility model cooperates the clamping of ball mill lining plate by vertical rod, movable block and support rod, not only can each size shape lining plate can be carried out safe, stable, convenient horizontal hoisting operation, but also effectively avoid the wear of lining plate.

Description

Technical Field

[0001] This utility model relates to the technical field of liner production and processing equipment, and in particular to a hoisting device for surface strengthening treatment of ball mill liners. Background Technology

[0002] Before being put into use, ball mill liners require surface strengthening treatments such as welding and thermal spraying to improve their wear resistance and service life. During the surface strengthening process, the liners need to be frequently hoisted and moved between different workstations. Currently, the hoisting of liners is mostly done by passing steel wire ropes through their pre-fabricated mounting holes or using general-purpose clamps to hold the edges. However, the existing hoisting methods still have the following shortcomings in actual operation: 1. The wire rope hoisting method not only requires workers to tie and secure the steel wire rope, but also easily causes wear on the liner plate and the precision-machined threads in the mounting holes during hoisting, leading to damage to the liner plate or difficulties in subsequent installation. 2. General-purpose clamps can only hold some symmetrical lining plates. When hoisting irregularly shaped lining plates, it is not only difficult to reliably hold the irregular edges of the lining plates, but the concentrated clamping force can easily lead to stress damage and pose a risk of falling from a height. 3. For irregularly shaped and heavy lining plates, the existing hoisting methods are difficult to ensure their horizontal stability during hoisting. They are prone to tilting and swaying during the hoisting process, which not only threatens the safety of the operation, but may also cause collision damage to the reinforced and valuable working surface. Therefore, there is an urgent need for a hoisting device that can adapt to the liner structure, protect the installation threads, and achieve safe and stable horizontal hoisting. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, this utility model discloses a hoisting device for surface strengthening treatment of ball mill liners. This utility model can not only perform safe, stable and convenient horizontal hoisting operations on liners of various sizes and shapes, but also effectively avoid wear on the liners.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A hoisting device for surface strengthening treatment of ball mill liners includes: Multiple vertical rods, with lifting rings at the upper end for connecting lifting equipment, and the lower end inserted through pre-fabricated mounting holes in the liner plate; The support rod has a groove on its upper surface that is axially oriented and open at its end; A limiting block is located at the lower end of the vertical rod and forms a sliding connection pair with the slide groove. It is used to realize the detachable connection between the vertical rod and the support rod and to limit the vertical movement. The movable block, located on the vertical rod and capable of moving along the vertical rod's axial direction, drives the vertical rod and support rod to move relative to each other when moving downwards and abutting the upper surface of the liner plate, so as to jointly clamp the liner plate.

[0005] Furthermore, the limiting block has a hemispherical structure, and its diameter is no greater than the diameter of the vertical rod.

[0006] Furthermore, a connecting rod is provided at the lower end of the vertical rod, and the connecting rod is fixedly connected to the plane of the limiting block.

[0007] Furthermore, the inner walls on both sides of the groove opening are provided with inner folded edges for vertically limiting and blocking the limiting block.

[0008] Furthermore, the groove depth is greater than the height of the limiting block, and the lower surface of the inner folded edge is provided with several limiting protrusions arranged in an orderly manner along the axial direction of the groove. The plane of the limiting block is provided with a limiting groove that is matched and engaged with the limiting protrusions.

[0009] Furthermore, the extending direction of the limiting protrusion is perpendicular to the axial direction of the groove.

[0010] Furthermore, the end face of the limiting protrusion is a raised arc surface, and the inner bottom surface of the limiting groove is a concave arc surface that matches the limiting protrusion.

[0011] Furthermore, the outer surface of the vertical rod is provided with external threads, and the movable block is provided with threaded through holes that are compatible with the external threads.

[0012] Furthermore, the movable block has an inverted cone-shaped structure.

[0013] Furthermore, the lower end of the movable block is provided with a flexible protective tube that is sleeved on the vertical rod and can move synchronously with the movable block.

[0014] Compared with the prior art, the beneficial effects of this utility model are: Through the coordinated operation of multiple vertical rods and support rods, and the automatic locking achieved by the downward movement of the movable block driving the support rods upward, the clamping force is evenly distributed on the upper and lower surfaces of the liner, realizing all-round enveloping clamping of the liner, effectively preventing swaying, tilting and falling off during hoisting, and ensuring the safety of high-altitude operations. By using a vertical rod to pass through the pre-fabricated mounting hole of the liner plate and to cooperate with the movable block and support rod for clamping, the friction of the liner plate caused by the direct penetration of the steel wire rope and the clamping wear of the liner plate edge by the general fixture are avoided, providing a strong guarantee for the high-quality production and processing of the liner plate. By setting limiting protrusions and limiting grooves, after the movable block moves down and drives the support rod to move up to achieve automatic locking, the limiting block in the slide groove can be firmly and stably limited, effectively preventing the limiting block from sliding accidentally during hoisting and ensuring the safety of liner hoisting; The movable block with an inverted conical structure can adapt to prefabricated installation holes of different diameters and automatically guides the vertical rod to center during the downward movement, which also ensures the horizontal stability of the support rod and provides a strong guarantee for the horizontal hoisting of the liner plate. By setting up a flexible protective tube, direct hard contact between the metal rod and the threaded mounting hole is avoided, reducing wear, protecting the mounting hole of the liner and the lifting device itself, and extending the service life of both. This invention utilizes the coordinated clamping of the ball mill liner by the vertical rod, movable block, and support rod. This not only enables safe, stable, and convenient horizontal lifting operations for liners of various sizes and shapes, but also effectively avoids wear on the liner, significantly improving turnover efficiency and operational safety during the surface strengthening process. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the vertical rod structure of this utility model; Figure 3 This is a schematic diagram of the support rod structure of this utility model; Figure 4 This is a schematic diagram of the movable block structure of this utility model; Figure 5 This is a side view of the present invention.

[0016] In the diagram: 1. Vertical rod; 1.1. Lifting ring; 1.2. External thread; 1.3. Connecting rod; 1.4. Limiting block; 1.4.1. Limiting groove; 2. Movable block; 2.1. Threaded hole; 2.2. Flexible protective tube; 3. Support rod; 3.1. Slide groove; 3.2. Inner fold; 3.2.1. Limiting protrusion. Detailed Implementation

[0017] The technical solution of this utility model will be described below with reference to the accompanying drawings of the embodiments of this utility model. In the description, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right" indicating the orientation or positional relationship, they are only corresponding to the drawings of this utility model for the convenience of describing this utility model, and do not indicate or imply that the device or element referred to must have a specific orientation.

[0018] Please refer to the instruction manual appendix. Figure 1-5 This utility model provides a technical solution: Example 1: A hoisting device for surface strengthening treatment of ball mill liners includes multiple vertical rods 1 and support rods 3 that cooperate with the vertical rods 1. The upper end of the vertical rod 1 is provided with a lifting ring 1.1 for connecting to lifting equipment, and the lower end is provided with a limiting block 1.4. Specifically, the limiting block 1.4 is a hemispherical structure with a diameter not greater than the diameter of the vertical rod 1. The lower end of the vertical rod 1 is provided with a connecting rod 1.3, which is fixedly connected to the plane of the limiting block 1.4. In order to ensure its structural strength, the vertical rod 1, the connecting rod 1.3 and the limiting block 1.4 are an integral structure. The upper surface of the support rod 3 is provided with a groove 3.1 that is axially arranged and open at the end. The inner walls on both sides of the groove 3.1 are provided with inner flanges 3.2. The limiting block 1.4 at the lower end of the vertical rod 1 slides into the groove 3.1 through the open end of the groove 3.1, so that the vertical rod 1 and the support rod 3 form a sliding connection pair. The hemispherical limiting block 1.4 can effectively reduce the contact area between the limiting block 1.4 and the inner wall of the groove 3.1, thereby facilitating the sliding connection between the support rod 3 and multiple limiting blocks 1.4. The inner flange 3.2 of the groove 3.1 can lock and limit the limiting block 1.4, thereby realizing the detachable connection and vertical limitation of the vertical rod 1 and the support rod 3. The vertical rod 1 is equipped with a movable block 2 that can move along the axial direction of the vertical rod 1. Specifically, the outer surface of the vertical rod 1 is provided with an external thread 1.2, and the movable block 2 is provided with a threaded through hole 2.1 that is adapted to the external thread 1.2. The movable block 2 is threadedly engaged with the vertical rod 1 through the threaded through hole 2.1. When the movable block 2 moves downward, it can drive the vertical rod 1 and the support rod 3 to move upward when it abuts the upper surface of the liner plate. Finally, the movable block 2 and the support rod 3 abut against the upper and lower surfaces of the ball mill liner plate respectively, thereby clamping the liner plate and providing strong support for subsequent horizontal and stable hoisting. The pre-drilled mounting holes on the surface of the ball mill liner are evenly distributed. Therefore, during the hoisting operation of the ball mill liner, multiple vertical rods 1 are inserted into the pre-drilled mounting holes on the ball mill liner. The limiting block 1.4 at the lower end of the vertical rod 1 is located at the lower part of the ball mill liner. Then, using the opening at the end of the sliding groove 3.1 on the support rod 3, multiple limiting blocks 1.4 on the same axis are slidably inserted into the sliding groove 3.1, thus connecting the support rod 3 with multiple vertical rods 1 on the same axis. The movable block 2 is rotated to move downwards. When the movable block 2 contacts the upper surface of the ball mill liner, as the movable block 2 continues to move downwards, it will drive the vertical rods 1 and the support rod 3 to move downwards together. The support rod 3 moves upward until it contacts the lower surface of the ball mill liner, at which point the movable block 2 can no longer move downward, thus clamping the ball mill liner. The operator only needs to pass the wire rope through the lifting ring 1.1 at the upper end of the multiple vertical rods 1 and connect it to the lifting equipment, and the lifting equipment can then lift the ball mill liner. Since the multiple vertical rods 1 are evenly distributed in the prefabricated installation holes, the support rod 3 can also provide horizontal support for the ball mill liner. Therefore, during the lifting process, not only can the ball mill liner be lifted horizontally and stably, but the wear caused to the ball mill liner during traditional wire rope lifting or clamping lifting is also effectively avoided.

[0019] In Example 2, since the limiting block 1.4 is slidably engaged with the groove 3.1 on the support rod 3, during the hoisting of the ball mill liner, the support rod 3 is limited entirely by the weight of the ball mill liner itself and the clamping force of the movable block 2 and the support plate 3 on the ball mill liner. If significant shaking occurs during hoisting, the limiting block 1.4 may slide within the groove 3.1, endangering hoisting safety. To prevent the limiting block 1.4 from sliding within the groove 3.1 after the movable block 2 and the support rod 3 clamp the ball mill liner, the groove depth of the groove 3.1 is greater than that of the limiting block 1.4. The inner folded edge 3.2 has a height of 0.4 and several limiting protrusions 3.2.1 arranged in an orderly manner along the axial direction of the slide groove 3.1 on its lower surface. The plane of the limiting block 1.4 has a limiting groove 1.4.1 that is adapted to engage with the limiting protrusions 3.2.1. When the limiting block 1.4 and the support rod 3 move upward as the movable block 2 descends, the limiting groove 1.4.1 on the upper surface of the limiting block 1.4 engages with the limiting protrusions 3.2.1 on the lower surface of the inner folded edge 3.2 at the opening of the slide groove 3.1, thereby effectively limiting and fixing the limiting block 1.4 so that it cannot slide in the slide groove 3.1. To ensure the effective positioning and fixing of the limiting protrusion 3.2.1 to the limiting block 1.4, the extension direction of the limiting protrusion 3.2.1 is perpendicular to the axis of the slide groove 3.1. To enable the limiting protrusion 3.2.1 to quickly and accurately engage with the limiting groove 1.4.1 when the movable block 2 and support rod 3 are clamping the ball mill liner, the end face of the limiting protrusion 3.2.1 is a raised arc surface, and the inner bottom surface of the limiting groove 1.4.1 is a concave arc surface that matches the limiting protrusion 3.2.1. This allows the limiting protrusion 3.2.1 to be vertically misaligned with the limiting groove 1.4.1, even if the limiting protrusion 3.2.1 and the limiting groove 1.4.1 are not vertically aligned. The pulling force of the rotating drive of the movable block 2 to raise the support rod 3 and the limiting block 1.4, the raised arc surface, and the support rod 3 which does not make interference contact with the lower surface of the ball mill liner enable the support rod 3 to adaptively make displacement adjustments. This allows the limiting protrusion 3.2.1 to quickly and accurately engage with the nearest limiting groove 1.4.1, thus achieving the limiting and fixing of the limiting block 1.4 in the slide groove 3.1.

[0020] In Example 3, to ensure that the vertical rod 1 can be vertically and stably inserted into the prefabricated mounting hole of the ball mill liner, and to guarantee the horizontal stability of the subsequent hoisting of the ball mill liner, the movable block 2 has an inverted conical structure. During the rotation and downward movement of the movable block 2, its small-diameter end can be inserted into the prefabricated mounting hole of the ball mill liner. As the movable block 2 continues to move downward, the side wall of the movable block 2 can be interference-fitted with the prefabricated mounting holes of different diameters. By using the contact and limiting of the movable block 2 with the prefabricated mounting hole, the vertical rod 1 can be coaxially set with the prefabricated mounting hole, thereby ensuring that the support rod 3 connected to the limiting block 1.4 can also remain horizontal, providing a strong guarantee for the horizontal and stable hoisting of the ball mill liner.

[0021] In Example 4, during the installation of the vertical rod 1 and the hoisting of the ball mill liner, the vertical rod 1 will inevitably rub against the inner wall of the prefabricated mounting hole of the ball mill liner. Since the surface of the vertical rod 1 is provided with external threads 1.2, and the inner wall of the prefabricated mounting hole is usually also provided with threads, it is very easy to cause wear on the external threads 1.2 on the surface of the vertical rod 1 and the threads on the inner wall of the prefabricated mounting hole. To this end, the lower end of the movable block 2 is provided with a flexible protective tube 2.2 that is sleeved on the vertical rod 1 and can move synchronously with the movable block 2. The flexible protective tube 2.2 is made of polyurethane, polyethylene or nylon, all of which have extremely high wear resistance and toughness, and can effectively protect the vertical rod 1 and the prefabricated mounting hole.

[0022] The parts of this utility model not described in detail are prior art. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that this utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the above embodiments should be regarded as exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended to include all changes that fall within the meaning and scope of the equivalents of the claims in this utility model, and no reference numerals in the claims should be regarded as limiting the content of the claims.

Claims

1. A hoisting device for surface strengthening treatment of ball mill liners, characterized in that, include: Multiple vertical rods (1) are provided at their upper ends with lifting rings (1.1) for connecting lifting equipment, and their lower ends are inserted through prefabricated mounting holes in the liner plate; The support rod (3) has a groove (3.1) on its upper surface that is arranged along its axial direction and has an open end. The limiting block (1.4) is located at the lower end of the vertical rod (1) and forms a sliding connection pair with the slide groove (3.1) to realize the detachable connection between the vertical rod (1) and the support rod (3) and the vertical limiting; The movable block (2) is located on the body of the vertical rod (1) and can move along the axial direction of the vertical rod (1). It is used to drive the vertical rod (1) and the support rod (3) to move relative to each other when moving downward and abutting the upper surface of the liner plate, so as to jointly clamp the liner plate.

2. The hoisting device for surface strengthening treatment of ball mill liners according to claim 1, characterized in that: The limiting block (1.4) is a hemispherical structure, and its diameter is no greater than the diameter of the vertical rod (1).

3. The hoisting device for surface strengthening treatment of ball mill liners according to claim 2, characterized in that: The lower end of the vertical rod (1) is provided with a connecting rod (1.3), and the connecting rod (1.3) is fixedly connected to the plane of the limiting block (1.4).

4. The hoisting device for surface strengthening treatment of ball mill liners according to claim 3, characterized in that: The inner walls on both sides of the groove (3.1) are provided with inner folded edges (3.2) for vertically limiting and blocking the limiting block (1.4).

5. A hoisting device for surface strengthening treatment of ball mill liners according to claim 4, characterized in that: The groove (3.1) has a groove depth greater than the height of the limiting block (1.4). The lower surface of the inner folded edge (3.2) is provided with several limiting protrusions (3.2.1) arranged in an orderly manner along the axial direction of the groove (3.1). The plane of the limiting block (1.4) is provided with a limiting groove (1.4.1) that is compatible with the limiting protrusions (3.2.1).

6. A hoisting device for surface strengthening treatment of ball mill liners according to claim 5, characterized in that: The extension direction of the limiting protrusion (3.2.1) is perpendicular to the axial direction of the groove (3.1).

7. A hoisting device for surface strengthening treatment of ball mill liners according to claim 6, characterized in that: The end face of the limiting protrusion (3.2.1) is a raised arc surface, and the inner bottom surface of the limiting groove (1.4.1) is a concave arc surface that matches the limiting protrusion (3.2.1).

8. The hoisting device for surface strengthening treatment of ball mill liners according to claim 1, characterized in that: The vertical rod (1) has an external thread (1.2) on its outer surface, and the movable block (2) has a threaded through hole (2.1) that matches the external thread (1.2).

9. A hoisting device for surface strengthening treatment of ball mill liners according to claim 8, characterized in that: The active block (2) has an inverted cone-shaped structure.

10. A hoisting device for surface strengthening treatment of ball mill liners according to claim 9, characterized in that: The lower end of the movable block (2) is provided with a flexible protective tube (2.2) that is sleeved on the vertical rod (1) and can move synchronously with the movable block (2).

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