Positioning device for piston rod of steel ladle hydraulic cylinder

Abstract

The utility model belongs to the technical field of metallurgical equipment, and particularly discloses a positioning device for a piston rod of a steel ladle hydraulic cylinder, which comprises a U-shaped steel plate, a reinforcing steel bar, a positioning block, a locking mechanism and an anti-skid component. Steel bars are welded to the inner side of the U-shaped steel plate to form a clamping groove structure. The adjustable positioning block is fixed at the end part of the U-shaped steel plate through threaded connection and is used for finely adjusting the length of the clamping groove; the locking mechanism comprises a bolt and a nut and is used for fixing the position of the piston rod; the anti-skid assembly is arranged on the inner surface of the clamping groove, and friction force is enhanced. By presetting the extension length of the piston rod, quick positioning is realized, the problems of long assembly time of the hydraulic cylinder and frequent continuous casting break accidents are solved, the assembly efficiency is improved, and the production continuity is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical equipment technology, specifically to a positioning device for the piston rod of a ladle hydraulic cylinder. Background Technology

[0002] The ladle hydraulic cylinder is a key piece of equipment used in the ladle slide mechanism to control the flow rate of molten steel in the ladle. During the casting process, the flow rate of molten steel is adjusted by controlling the extension length of the piston rod of the hydraulic cylinder. Before the ladle is placed on the continuous casting ladle turret, the operator lifts the hydraulic cylinder and aligns it with the sliding linkage of the ladle slide mechanism. This cumbersome operation increases the labor intensity of the personnel. If the piston rod length is not adjusted properly in time, it will cause delays in assembling the hydraulic cylinder in the ladle. In fact, long assembly time during normal production can even cause production accidents such as interruption of continuous casting.

[0003] Patent CN202527478U discloses a positioning device for the piston rod of a hydraulic cylinder used in a finishing mill. The positioning device, used on a hydraulic cylinder on a finishing mill stand, includes a bolt and a keyway on the piston rod. The bolt is threadedly connected to a hole in a spherical cover of the stand, and the lower section of the bolt's thread mates with the keyway. This invention eliminates errors in the magnetic scale feedback data of the roller shifting mechanism by radially positioning the piston rod, thus preventing steel pile-up accidents, and has a simple structure.

[0004] The aforementioned positioning device prevents the radial rotation of the hydraulic cylinder piston rod, eliminates errors in the feedback data from the magnetic scale, and cannot directly position the extension length of the hydraulic cylinder piston rod. Utility Model Content

[0005] The purpose of this utility model is to provide a positioning device for the piston rod of a hydraulic cylinder for a steel ladle, so as to solve the problem of time delays caused by improper adjustment of the piston rod length when assembling the hydraulic cylinder for the steel ladle.

[0006] To achieve the above objectives, the basic solution provided by this utility model is as follows: a positioning device for a piston rod of a steel ladle hydraulic cylinder, comprising a U-shaped steel plate, reinforcing bars, positioning blocks, and locking bolts. The reinforcing bars are welded to the bottom inner side of the U-shaped steel plate. Positioning blocks are provided at both ends of the U-shaped steel plate. The positioning blocks are fixedly connected to the U-shaped steel plate. The locking bolts are threaded through the U-shaped steel plate and are directly opposite the piston rod of the hydraulic cylinder.

[0007] The principle and beneficial effects of this invention are as follows: the distance between the positioning blocks at both ends determines the length the piston rod needs to extend during hydraulic cylinder assembly. Excess piston rod length is retracted into the cylinder body, and the hydraulic cylinder connector direction is adjusted. Before continuous casting on the ladle, there is no need to adjust the piston rod length again; the hydraulic cylinder can be directly pushed into the hydraulic cylinder slot. The bottom reinforcing bar forms a slot structure to prevent the U-shaped steel plate from slipping off the piston rod, and the piston rod is secured with locking bolts. This significantly reduces the time spent on frequent adjustments due to unsuitable piston rod extension length, thus improving hydraulic cylinder assembly efficiency.

[0008] Option 2, a preferred embodiment of the basic option, involves welding slide rails to both ends of the U-shaped steel plate and threaded pipes to both ends of the U-shaped steel plate. The positioning block is welded with a sliding rod and an adjusting screw. The sliding rod is slidably connected to the slide rails, one end of the adjusting screw is rotatably connected to the positioning block, and the other end is threadedly connected to the threaded pipe. By rotating the adjusting screw, the positioning block is moved axially along the slide rails, adjusting the effective positioning length of the positioning block. This allows for compatibility with hydraulic cylinder piston rods of different specifications, expanding the applicability of the device.

[0009] Option 3, a preferred option of the basic option, involves welding an adjusting nut to the adjusting screw, with operating levers welded to both sides of the adjusting nut. Adding an adjusting nut with operating levers provides a convenient manual adjustment method.

[0010] Option 4, a preferred embodiment of the basic option, features rubber pressure plates at the ends of the locking bolt and positioning block, with anti-slip textures on the contact surface of the rubber pressure plates. When the locking bolt and adjusting screw are tightened, the rubber pressure plates contact the piston rod surface, and the anti-slip textures increase friction. The rubber material provides elastic clamping force, preventing the piston rod from shifting under vibration or impact.

[0011] Option 5, a preferred option of the basic design, features a handle welded to the outer side of the U-shaped steel plate for easy handling and disassembly.

[0012] Option 6, a preferred embodiment of the basic option, features a latch hinged to one side of the U-shaped steel plate and a tenon hinged to the other side. The tenon engages with the latch, and a return spring is fitted onto the tenon's pivot. The latch and tenon further secure the U-shaped steel plate and piston rod. Upon completion of positioning, pressing down the end of the tenon quickly unlocks the latch, facilitating installation and disassembly. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the positioning device for the piston rod of a steel ladle hydraulic cylinder according to the present invention;

[0014] Figure 2 This is a front view of a positioning device for a hydraulic cylinder piston rod of a steel ladle according to this utility model;

[0015] Figure 3 yes Figure 2 Sectional view at point A in the middle. Detailed Implementation

[0016] The present invention will be further described in detail below through specific embodiments:

[0017] The reference numerals in the accompanying drawings are as follows: 1-U-shaped steel plate, 2-reinforcing bar, 3-positioning block, 4-locking bolt, 5-reset spring, 6-slide rail, 7-threaded pipe, 8-slide rod, 9-adjusting screw, 10-adjusting nut, 11-operating lever, 12-rubber pressure plate, 13-handle, 14-lock, 15-clamp.

[0018] Example

[0019] like Figures 1 to 3 As shown: A positioning device for the piston rod of a steel ladle hydraulic cylinder includes a U-shaped steel plate 1, a reinforcing bar 2, a positioning block 3, and a locking bolt 4. The reinforcing bar 2 is welded to the bottom inner side of the U-shaped steel plate 1. Positioning blocks 3 are provided at both ends of the U-shaped steel plate 1. Slide rails 6 are welded to both ends of the U-shaped steel plate 1. Threaded pipes 7 are also welded to both ends of the U-shaped steel plate 1. A sliding rod 8 and an adjusting screw 9 are welded to the positioning block 3. The sliding rod 8 is slidably connected to the slide rail 6. One end of the adjusting screw 9 is rotatably connected to the positioning block 3, and the other end of the adjusting screw 9 is threadedly connected to the threaded pipe 7. An adjusting nut 10 is welded to rod 9. An operating rod 11 is welded to both sides of the adjusting nut 10. A locking bolt 4 is threaded through the U-shaped steel plate 1. The locking bolt 4 is directly opposite the piston rod of the hydraulic cylinder. A rubber pressure plate 12 is provided at the end of the locking bolt 4 and the positioning block 3. The contact surface of the rubber pressure plate 12 is provided with anti-slip texture. A handle 13 is welded to the outside of the U-shaped steel plate 1. A latch 14 is hinged to the side of the U-shaped steel plate 1. A tenon 15 is hinged to the other side of the U-shaped steel plate 1. The tenon 15 is engaged with the latch 14. A return spring 5 is sleeved on the rotating shaft of the tenon 15.

[0020] The implementation method of this embodiment is as follows: After the molten steel ladle is continuously cast, the hydraulic cylinder is removed and placed in the assembly area. The U-shaped steel plate 1 is clamped at the piston rod of the hydraulic cylinder. The locking bolt 4 is rotated to tighten the piston rod. The adjusting screw 9 is rotated to adjust the extension length of the positioning block 3. The distance between the two positioning blocks 3 is the extension length of the piston rod required when assembling the hydraulic cylinder. The U-shaped steel plate 1 and the piston rod are fixed by the latch 14, and the latch is fixed by the tenon 15. The excess length of the piston rod is retracted into the cylinder body, and the direction of the hydraulic cylinder connector is adjusted. Before the molten steel ladle is continuously cast, there is no need to adjust the piston rod length again. The hydraulic cylinder can be directly pushed into the hydraulic cylinder slot.

[0021] When it is necessary to disassemble this device, press down the end of the latch 15 to release the lock 14, and then quickly remove it using the handle 13.

[0022] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A positioning device for the piston rod of a steel ladle hydraulic cylinder, characterized in that, It includes a U-shaped steel plate (1), a reinforcing bar (2), a positioning block (3) and a locking bolt (4). The reinforcing bar (2) is welded to the bottom of the inner side of the U-shaped steel plate (1). The two ends of the U-shaped steel plate (1) are provided with positioning blocks (3). The positioning blocks (3) are fixedly connected to the U-shaped steel plate (1). The locking bolt (4) is threaded through the U-shaped steel plate (1) and is directly opposite the piston rod of the hydraulic cylinder.

2. The positioning device for the piston rod of a ladle hydraulic cylinder according to claim 1, characterized in that... The U-shaped steel plate (1) is welded with slide rails (6) at both ends, and threaded pipes (7) are also welded to both ends of the U-shaped steel plate (1). The positioning block (3) is welded with slide rods (8) and adjusting screws (9). The slide rods (8) are slidably connected to the slide rails (6). One end of the adjusting screws (9) is rotatably connected to the positioning block (3), and the other end of the adjusting screws (9) is threadedly connected to the threaded pipes (7).

3. The positioning device for the piston rod of a steel ladle hydraulic cylinder according to claim 2, characterized in that, An adjusting nut (10) is welded onto the adjusting screw (9), and an operating rod (11) is welded onto both sides of the adjusting nut (10).

4. The positioning device for the piston rod of a ladle hydraulic cylinder according to claim 1, characterized in that, The locking bolt (4) and the positioning block (3) are provided with rubber pressure plates (12) at their ends, and the contact surface of the rubber pressure plates (12) is provided with anti-slip texture.

5. A positioning device for the piston rod of a ladle hydraulic cylinder according to claim 1, characterized in that, A handle (13) is welded to the outside of the U-shaped steel plate (1).

6. A positioning device for a ladle hydraulic cylinder piston rod according to claim 1, characterized in that... The U-shaped steel plate (1) has a latch (14) hinged on one side and a tenon (15) hinged on the other side. The tenon (15) engages with the latch (14), and a return spring (5) is sleeved on the pivot of the tenon (15).

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