Hydraulic tipping mechanism and buffer device thereof

Abstract

The utility model provides a hydraulic tipping mechanism and a buffer device thereof, the buffer device comprises a buffer seat, a long through hole is arranged in the buffer seat, a buffer shaft capable of moving up and down is arranged in the long through hole, a buffer cover is arranged on the buffer shaft, and a spring is arranged on the buffer seat around the buffer shaft. Mechanical protection is provided by arranging the coaming for preventing the buffer cover from being excessively pressed downwards on the edge of the buffer seat, so that when compression is too large, the buffer seat is in contact with the buffer cover, the buffer cover cannot be continuously compressed, and failure and damage caused by excessive compression of the spring are avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of metallurgical equipment and specifically relates to a hydraulic tipping mechanism and a buffer device thereof. Background Art

[0002] At present, the use of hydraulic tilting equipment for molten iron ladles in iron and steel mills in the metallurgical industry is increasing. However, most of the existing hydraulic tilting equipment is not equipped with a buffer device, or the tilting hydraulic cylinder and the base are greatly impacted when the heavy tank falls in or tilts back, which seriously affects the service life of the hydraulic cylinder and the equipment foundation. In addition, the main body of the buffer device equipped with some hydraulic tilting is made of rubber products. The hydraulic tilting load and impact force are large, and the use site is a high temperature and high dust environment. The buffer device is easy to fail and damage. The prior art (CN 213611669 U) discloses a hydraulic tilting device for molten iron ladle, the upper surface of which is fixed with a buffer. The upper surface of the buffer abuts against the lower surface of the molten iron ladle body, which is used to reduce the impact force after the molten iron ladle body is reset, but due to the large impact force, the buffer is easy to fail and damage. Summary of the invention

[0003] The technical problem to be solved by the utility model is that the buffer device of the hydraulic tipping equipment in the prior art is easy to fail and be damaged when the impact force is large.

[0004] In order to solve the technical problem, the utility model provides a hydraulic tipping mechanism and a buffer device thereof.

[0005] The purpose of the utility model is achieved in the following way: a hydraulic tipping buffer device, the buffer device includes a buffer seat, a long through hole is arranged in the buffer seat, a buffer shaft that can move up and down is installed in the long through hole, a buffer cover is arranged on the buffer shaft, a spring is arranged around the buffer shaft on the buffer seat, and a surrounding plate is arranged on the edge of the buffer seat to prevent the buffer cover from being excessively pressed down.

[0006] A vertical gap for limiting the compression amount is arranged between the buffer cover and the enclosure plate of the buffer seat.

[0007] The length of the vertical gap is 30-50 mm.

[0008] The buffer shaft passes through the middle hole of the spring, so that the buffer shaft can be compressed or rebounded in the axial direction.

[0009] A locking nut is installed at the lower part of the buffer shaft to prevent the buffer shaft and the stage buffer cover from flying off during compression and rebound.

[0010] The buffer shaft is configured as a stepped shaft, and the top of the buffer shaft is a spherical structure.

[0011] An oil inlet is arranged on the enclosure plate.

[0012] The spring is at least one disc spring.

[0013] The disc spring is arranged in a stacked arrangement, a matched arrangement or a combination of a stacked arrangement and a matched arrangement.

[0014] A hydraulic tilting mechanism comprises a base, a tilting hydraulic cylinder and a column are fixed on the base, the upper end of the column is rotatably connected to a tilting bracket, the tilting bracket is hinged to the upper end of the tilting hydraulic cylinder, a molten iron ladle is clamped in the tilting bracket, the molten iron ladle and the tilting bracket are fixedly connected by a locking device, a buffer device is fixedly arranged between the tilting bracket and the base, the buffer device comprises a buffer seat, a long through hole is arranged in the buffer seat, a buffer shaft that can move up and down is installed in the long through hole, a buffer cover is arranged on the buffer shaft, a spring is arranged around the buffer shaft on the buffer seat, and a surrounding plate is arranged on the edge of the buffer seat to prevent the buffer cover from being excessively pressed down.

[0015] Compared with the prior art, the technical effect of the utility model is as follows: the utility model provides a hydraulic tipping mechanism and a buffer device thereof, wherein the buffer device comprises a buffer seat, a long through hole is arranged in the buffer seat, a buffer shaft which can move up and down is installed in the long through hole, a buffer cover is arranged on the buffer shaft, a spring is arranged around the buffer shaft on the buffer seat, and mechanical protection is provided by arranging a surrounding plate at the edge of the buffer seat to prevent the buffer cover from being excessively pressed down, so that when the compression is too large, the buffer seat contacts the buffer cover, making it unable to continue to be compressed, thereby avoiding excessive compression of the spring to cause the spring to fail and be damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a side view of the buffer device.

[0017] Figure 2 It is a top view of the buffer device.

[0018] Figure 3 It is a schematic diagram of the installation of the buffer device on the tipping mechanism.

[0019] In the figure, 1 is a buffer shaft, 2 is a buffer cover, 3 is a spring, 4 is a buffer seat, 5 is a locking nut, 6 is an oil inlet, 7 is a panel, 8 is a base, 9 is a column, 10 is a tilting bracket, 11 is a ladle, 12 is a tilting hydraulic cylinder, 13 is a buffer device support, 14 is a buffer device, 15 is a hydraulic cylinder support, 16 is a shaft, 17 is a locking device, and 18 is a pressure plate. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with specific embodiments, but the protection scope of the present invention is not limited thereto.

[0021] like Figure 1~Figure 3As shown, the utility model provides a hydraulic tipping mechanism and a buffer device 14 thereof. The buffer device 14 includes a buffer seat 4. The buffer seat 4 has a fixed flange surface. The flange surface is fixed to the buffer device support 13 by bolts to provide support for the buffer device. A long through hole is provided in the middle of the buffer seat 4 for installing the buffer shaft 1, so that the buffer shaft 1 can move up and down along the axial direction. The buffer shaft 1 also plays a guiding role. The buffer seat 4 is configured as a groove type. The buffer seat 4 and the upper buffer cover 2 form a headwind cavity to prevent dust from entering the cavity. The cavity is used to install the spring 3. An oil inlet 6 is installed on the buffer seat 4. Grease is added into the cavity from the oil inlet 6 to lubricate the spring 3, improve the buffering performance, and extend the service life of the spring 3 and the buffer shaft 1.

[0022] The buffer shaft 1 passes through the middle hole of the spring 3, so that the spring 3 can be compressed or rebounded along the axial direction. The top of the buffer shaft 1 is a spherical structure, which prevents the buffer shaft 1 from being subjected to a large lateral force, prolongs its service life, and makes the buffer shock absorption safer and more reliable.

[0023] The lower part of the buffer shaft 1 is provided with a locking nut 5 for tightening to prevent the buffer shaft 1 and the step buffer cover 2 from flying off during compression and rebound, and is convenient for installation and later maintenance. The buffer shaft 1 is also provided as a stepped shaft, and the upper step is used to press the buffer cover.

[0024] The butterfly spring 3 is made of spring steel, which can withstand large loads and impacts. In addition, multiple butterfly springs are superimposed. Figure 1 The example is a double-piece stacking method. Other methods can be selected according to specific needs, which can ensure both load-bearing capacity and sufficient compression. It is suitable for the requirements of high load and high impact of hydraulic tipping.

[0025] The spring 3 is at least one disc spring, and the disc spring is arranged in a stacked arrangement, a matched arrangement, or a combination of a stacked arrangement and a matched arrangement.

[0026] The buffer cover 2 and the buffer seat 4 are provided with a vertical gap, the range of the vertical gap is 30-50 mm, such as 30 mm, 40 mm, 50 mm, preferably 40 mm, and the vertical gap is used to limit the compression amount to avoid excessive compression.

[0027] Each hydraulic tilting mechanism is provided with two buffer devices 14, which are respectively installed between the tilting brackets 10 and the base 8 on both sides of the hydraulic tilting mechanism. Figure 3As shown, the buffer device 14 is fixed to the buffer device support 13 on the upper part of the base 8 by bolts. In the initial state of hydraulic tipping, the upper part of the buffer device 14 contacts the pressure plate 18 welded on the tipping bracket. When the ladle 11 enters the tipping bracket 10, it will have an impact on the tipping bracket 10, and finally act on the buffer device 14, so that the buffer device 14 can play a role in buffering and shock absorption. Installing a set of buffer devices 14 on the left and right can make the force uniform, and can play a good protective role for the tipping hydraulic cylinders 12 on both sides.

[0028] The utility model also provides a hydraulic tilting mechanism, including a base 8, on which a tilting hydraulic cylinder 12 and a column 9 are fixed, and the base 8 and the column 9 are fastened by bolts to provide support for the entire tilting mechanism, and are convenient for lifting and shipping. The base 5 is connected and fastened to the foundation by anchor bolts. A hydraulic cylinder support 15 is provided on the base 8, and the hydraulic cylinder support 15 is used to install and support the tilting hydraulic cylinder 12. The upper end of the column 9 is rotatably connected to the tilting bracket 10 through an axis 16, and the tilting bracket 10 clamps the molten iron ladle 11 to provide support for the molten iron ladle. The molten iron ladle 11 and the tilting bracket 10 are fixedly connected by a locking device 17. The locking device 17 includes a locking hydraulic cylinder and a locking rod. Under the action of the hydraulic system, the locking hydraulic cylinder drives the locking rod to extend and retract. When extending, the locking rod is inserted into the locking hole of the ear axle box of the molten iron ladle 11 to achieve locking; when retracting, the locking rod is retracted to achieve unlocking. The tilting hydraulic cylinder 12 is of an intermediate ear shaft type, and the ear shaft is fixed on the base 8 through a hydraulic cylinder support 15, and the ear shaft is rotatable. The upper ear ring of the tilting hydraulic cylinder 12 is connected to the tilting bracket 10 through a hinge shaft. Under the action of the hydraulic system, the hydraulic cylinder piston rod is extended or retracted. When extended, it drives the tilting bracket to rotate around the axis 16 to achieve the tilting action of the tilting mechanism, thereby realizing the dumping of the molten iron in the ladle 11; when retracted, the tilting mechanism is realized. A buffer device 14 is fixedly arranged between the tilting bracket 10 and the base 8, and the buffer device 14 includes a buffer seat 4, a long through hole is arranged in the buffer seat 4, and a buffer shaft 1 that can move up and down is installed in the long through hole, a buffer cover 2 is arranged on the buffer shaft 1, and a spring 3 is arranged around the buffer shaft 1 on the buffer seat 4. The edge of the buffer seat 4 is provided with a surrounding plate 7 to prevent the buffer cover 2 from being excessively pressed down.

[0029] The working process of the hydraulic tipping buffer device provided by the utility model is as follows: force acts on the dome on the upper part of the buffer shaft 1, so that the buffer shaft 1 drives the buffer cover 2 to be pressed downward, and the butterfly spring 3 begins to be compressed to achieve buffering and shock absorption. When the force is too large, the buffer cover 2 contacts the enclosure plate on the upper part of the buffer seat 4 to achieve mechanical limiting, and the butterfly spring 3 cannot be further compressed; during rebound, the locking nut 5 is limited to avoid excessive rebound.

[0030] The hydraulic tipping mechanism and buffer device provided by the utility model provide mechanical protection by arranging a panel 7 on the edge of the buffer seat 4 to prevent the buffer cover 2 from being excessively pressed downward, so that when the compression is too large, the panel 7 of the buffer seat 4 contacts the buffer cover 2, making it unable to continue to be compressed, thereby avoiding excessive compression of the spring and causing the spring to fail and be damaged.

[0031] The above is only a preferred embodiment of the present invention. It should be pointed out that those skilled in the art can make several changes and improvements without departing from the overall concept of the present invention, and these should also be regarded as the protection scope of the present invention.

Claims

1. A hydraulic tipping buffer device, characterized in that: The buffer device (14) comprises a buffer seat (4), a long through hole is arranged in the buffer seat (4), a buffer shaft (1) that can move up and down is installed in the long through hole, a buffer cover (2) is arranged on the buffer shaft (1), a spring (3) is arranged around the buffer shaft (1) on the buffer seat (4), and a surrounding plate (7) is arranged on the edge of the buffer seat (4) to prevent the buffer cover (2) from being excessively pressed downward.

2. The hydraulic tilting buffer device according to claim 1, characterized in that: A vertical gap for limiting the amount of compression is provided between the buffer cover (2) and the enclosure (7) of the buffer seat (4).

3. The hydraulic tilting buffer device according to claim 2, characterized in that: The length of the vertical gap is 30-50 mm.

4. The hydraulic tilting buffer device according to claim 1, characterized in that: The buffer shaft (1) passes through the middle hole of the spring (3), so that the spring (3) can be compressed or rebounded in the axial direction.

5. The hydraulic tilting buffer device according to claim 4, characterized in that: A locking nut (5) is installed at the lower part of the buffer shaft (1) to prevent the buffer shaft (1) and the stage buffer cover (2) from being bounced off during compression and rebound.

6. The hydraulic tilting buffer device according to claim 5, characterized in that: The buffer shaft (1) is configured as a stepped shaft, and the top of the buffer shaft (1) is a spherical structure.

7. The hydraulic tilting buffer device according to claim 1, characterized in that: An oil inlet (6) is arranged on the enclosure plate.

8. The hydraulic tilting buffer device according to claim 1, characterized in that: The spring (3) is at least one disc spring.

9. The hydraulic tilting buffer device according to claim 8, characterized in that: The disc spring is arranged in a stacked arrangement, a matched arrangement or a combination of a stacked arrangement and a matched arrangement.

10. A hydraulic tilting mechanism, comprising a base (8), a tilting hydraulic cylinder (12) and a column (9) being fixed on the base (8), the upper end of the column (9) being rotatably connected to a tilting bracket (10), the tilting bracket (10) being hinged to the upper end of the tilting hydraulic cylinder (12), a molten iron ladle (11) being clamped in the tilting bracket (10), the molten iron ladle (11) and the tilting bracket (10) being fixedly connected via a locking device (17), a buffer device (14) being fixedly arranged between the tilting bracket (10) and the base (8), characterized in that: The buffer device (14) comprises a buffer seat (4), a long through hole is arranged in the buffer seat (4), a buffer shaft (1) that can move up and down is installed in the long through hole, a buffer cover (2) is arranged on the buffer shaft (1), a spring (3) is arranged around the buffer shaft (1) on the buffer seat (4), and a surrounding plate (7) is arranged on the edge of the buffer seat (4) to prevent the buffer cover (2) from being excessively pressed downward.

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