Bidirectional impact hydraulic iron notch drill

Abstract

The utility model discloses a bidirectional impact hydraulic iron notch drill which comprises a forward impact mechanism, a backward impact mechanism and an output shaft. The retreating impact mechanism comprises a retreating impact body and a retreating impact ring, retreating hydraulic cavities are formed in the retreating impact body in the length direction, the retreating impact ring is arranged in the retreating hydraulic cavities, and the retreating hydraulic cavities comprise the first retreating hydraulic cavity and the second retreating hydraulic cavity; the retreating impact ring comprises a first impact ring body and a second impact ring body, the first impact ring body and the second impact ring body are integrally formed, the connecting position of the first impact ring body and the second impact ring body is in a slope shape, and the outer diameter of the second impact ring body is equal to the diameter of the second retreating hydraulic cavity. The outer diameter of the first impact ring is smaller than the diameter of the first retreating hydraulic cavity. The hydraulic iron notch drill solves the technical problems that in the technical field of ferrous metallurgy, a traditional iron notch drill is low in efficiency and large in application limitation.

Description

Technical Field

[0001] This utility model relates to the field of iron and steel metallurgy technology, specifically to a bidirectional impact hydraulic tapping machine. Background Technology

[0002] In the steel smelting industry, the blast furnace tapping process is an extremely critical and complex link in the entire steel production process. As the core equipment for opening the blast furnace taphole, the performance of the tapping machine directly affects whether the tapping operation can be carried out smoothly and efficiently.

[0003] Currently, most traditional taphole openers on the market have significant technical limitations. In terms of impact function, traditional taphole openers are particularly weak, often possessing only unidirectional impact capability, typically impacting towards the taphole. However, in actual blast furnace tapping scenarios, the blockage conditions at the taphole vary greatly, and the material properties of the blockages also differ. Some blockages are hard and dense, making it difficult for unidirectional impact to completely break them off and remove them from the taphole; while other blockages may be loose on one side and exceptionally hard on the other. In these complex situations, taphole openers with only unidirectional impact cannot flexibly adjust their impact strategy according to the actual situation, making it difficult to open the taphole quickly and efficiently, thus hindering the smoothness and production efficiency of the entire blast furnace tapping process. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and provide a bidirectional impact hydraulic tapping machine to solve the technical problems of low efficiency and limited application of traditional tapping machines in the field of iron and steel metallurgy.

[0005] To achieve the above technical objectives, the present invention provides a bidirectional impact hydraulic taphole opener, comprising:

[0006] The system includes a forward impact mechanism, a backward impact mechanism, and an output shaft. The backward impact mechanism comprises a backward impact body and a backward impact ring. The backward impact body has a backward hydraulic cavity along its length. The backward impact ring is housed within the backward hydraulic cavity. The backward hydraulic cavity includes a first backward hydraulic cavity and a second backward hydraulic cavity. The backward impact ring includes a first impact ring and a second impact ring. The first impact ring and the second impact ring are integrally formed. The connection between the first impact ring and the second impact ring is sloped. The outer diameter of the second impact ring is equal to the diameter of the second backward hydraulic cavity. The outer diameter of the first impact ring is smaller than the diameter of the first backward hydraulic cavity.

[0007] Compared with the prior art, the beneficial effects of this utility model include:

[0008] 1. Bidirectional impact design improves work efficiency and adaptability: Traditional taphole openers can only impact in one direction, making it difficult to handle complex situations where the taphole blockage has uneven hardness (such as one side being hard and the other side being loose). This new invention achieves bidirectional impact on the output shaft by alternating the forward and backward impact mechanisms. The impact direction can be flexibly adjusted according to the actual condition of the blockage, quickly breaking up blockages with different characteristics and significantly shortening the taphole opening time.

[0009] 2. Optimized structural design enhances stability and reliability: The retraction impact ring is integrally formed from the first and second impact rings, with a sloping connection. The outer diameter of the second impact ring is equal to the diameter of the second retraction hydraulic chamber, while the outer diameter of the first impact ring is smaller than the diameter of the first retraction hydraulic chamber. This design creates a pressure difference in the hydraulic oil within the chamber, ensuring smooth movement of the impact ring. Simultaneously, the sloping transition reduces hydraulic shock, improving the stability of the mechanism. Attached Figure Description

[0010] Figure 1 This is a three-dimensional structural diagram of the bidirectional impact hydraulic taphole opener provided by this utility model;

[0011] Figure 2 This is a side view of the bidirectional impact hydraulic taphole opener provided by this utility model.

[0012] Figure 3 This is a cross-sectional structural schematic diagram of the bidirectional impact hydraulic taphole opener provided by this utility model;

[0013] Figure 4 This is a schematic diagram of the bidirectional impact hydraulic tapping machine provided by this utility model. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0015] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0016] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0017] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 This embodiment provides a bidirectional impact hydraulic tapping machine, including a forward impact mechanism 1, a backward impact mechanism 2, an output shaft 3, and a rotation mechanism 4.

[0018] Furthermore, the retraction impact mechanism 2 includes a retraction impact body 21 and a retraction impact ring 22. The retraction impact body 21 has a retraction hydraulic cavity 21a along its length, and the retraction impact ring is built into the retraction hydraulic cavity 21a. The retraction hydraulic cavity 21a includes a first retraction hydraulic cavity 21a1 and a second retraction hydraulic cavity 21a2. The retraction impact ring 22 includes a first impact ring 221 and a second impact ring 222. The first impact ring 221 and the second impact ring 222 are integrally formed. The connection between the first impact ring 221 and the second impact ring 222 is sloped. The outer diameter of the second impact ring 222 is equal to the diameter of the second retraction hydraulic cavity 21a2, and the outer diameter of the first impact ring 221 is smaller than the diameter of the first retraction hydraulic cavity 21a1.

[0019] Furthermore, the retracting impact body 21 is provided with a retracting impact oil inlet hole 21b and a retracting impact oil outlet hole 21c. The retracting impact oil inlet hole 21b is connected to the first retracting hydraulic chamber 21a1, and the retracting impact oil outlet hole 21c is connected to the second retracting hydraulic chamber 21a2.

[0020] Furthermore, the first impact ring 221 is sleeved on the output shaft 3, and the retracting impact ring 22 is fixedly connected to the output shaft 3.

[0021] Furthermore, the retractable impact mechanism provides a continuous rearward thrust to the output shaft.

[0022] Furthermore, when hydraulic oil flows into the first retracting hydraulic chamber 21a1 through the retracting impact inlet 21b, the pressure in the first retracting hydraulic chamber 21a1 gradually increases until it overcomes the resistance of the output shaft 3 moving backward, causing the output shaft 3 to move backward. At this time, the first retracting hydraulic chamber 21a1 is connected to the second retracting hydraulic chamber 21a2, and the hydraulic oil flows out through the oil passage from the retracting impact outlet 21c.

[0023] Furthermore, the forward impact mechanism 1 includes a forward impact body 11 and an oil circuit reversing valve core 12. The forward impact body 11 has a mounting hole 11a and a forward hydraulic chamber 11b along its length. The output shaft 3 is housed in the mounting hole 11b and is slidably connected to the forward impact body 11.

[0024] Furthermore, the forward impact body 11 also has an oil circuit reversing cavity 11c, the oil circuit reversing valve core 12 is built into the oil circuit reversing cavity 11c, the forward impact body 11 has a forward impact oil inlet hole 11d and a forward impact oil outlet hole 11e, the forward impact oil inlet hole 11d and the forward impact oil outlet hole 11e are respectively connected to the two ends of the oil circuit reversing cavity 11c, and the forward impact oil inlet hole 11d is connected to the forward hydraulic cavity 11b through an oil circuit.

[0025] Furthermore, the forward impact mechanism 1 provides a continuous forward thrust to the output shaft 3.

[0026] Furthermore, when hydraulic oil flows into the forward hydraulic chamber 11c through the forward impact inlet 11d, and the pressure in the forward hydraulic chamber 11b gradually increases to overcome the resistance of the output shaft 3 moving forward, the output shaft 3 moves forward under the drive of the hydraulic oil pressure. When the output shaft 3 moves forward, the pressure in the forward hydraulic chamber 11b is released through the forward impact outlet 11e.

[0027] Furthermore, the rotating mechanism 4 includes a rotating drive source 41 and a transmission assembly 42. The output end of the transmission assembly 42 is driven to the output shaft 3 through transmission teeth, and the input end of the transmission assembly 42 is driven to the output shaft of the rotating drive source 41.

[0028] Furthermore, preferably, the rotary drive source 41 is selected as a hydraulic drive source. In this embodiment, the hydraulic drive source has the following advantages: 1. High power density: It can output a large amount of power with a small volume and weight, providing high torque to meet the high torque required by the drill bit of the iron-opening machine to break the blockage in the iron opening, and the power response is rapid, which can quickly reach the working speed; 2. Stable output: The hydraulic system can realize a stable and continuous power output, avoiding power fluctuations during rotation, ensuring stable operation of the drill bit, and improving the quality of iron opening; 3. Convenient speed adjustment: By changing the opening degree of the hydraulic valve and the pump displacement, the speed can be adjusted. 4. Precise control: With the help of various hydraulic control valves, the speed, direction and torque of the hydraulic motor can be precisely controlled to achieve precise positioning and operation of the taphole opening machine; 5. Overload protection: The system is equipped with safety valves and other components to automatically limit pressure, prevent damage to the equipment due to overload, and protect rotating parts and drill bits; 6. Impact and vibration resistance: Hydraulic oil can buffer and absorb impact and vibration energy, reducing the damage to the equipment caused by uneven taphole blockage during the taphole opening process.

[0029] Furthermore, the taphole machine also integrates the accumulator 5, whose input end is connected to the retracting hydraulic chamber and the forward hydraulic chamber. In this embodiment, it has the following advantages: 1. As an emergency power source: In emergency situations such as failure of the tapping yard hydraulic station, power outage, or hydraulic pump malfunction, the accumulator can release stored pressurized oil to provide power to the taphole machine, driving it to perform necessary safe operations such as tapping, avoiding tapping accidents caused by power interruption, and ensuring the safety and continuity of blast furnace tapping; 2. Buffering hydraulic shock: When the taphole machine is working, the hydraulic system may experience rapid changes in flow or pressure, such as rapid opening or closing of valves or sudden piston movement, all of which generate hydraulic shock. The accumulator can absorb and mitigate these shock waves, reducing damage to pipelines, valves, hydraulic cylinders, and other components, extending the service life of the equipment, and also reducing noise caused by hydraulic shock; 3. Compensating for system leakage: Some leakage is inevitable in hydraulic systems. Prolonged leakage may lead to a drop in system pressure, affecting the normal operation of the taphole machine. Accumulators can compensate for fluid loss due to leaks in the system by releasing stored energy, maintaining stable system pressure and ensuring the working performance of the taphole machine; 4. Balancing pressure fluctuations: During operation, changes in load or instability in the hydraulic pump's output flow may cause system pressure fluctuations. Accumulators can store excess pressure energy when system pressure rises and release energy when pressure drops, thereby buffering pressure fluctuations and keeping the hydraulic system pressure within a relatively stable range, which helps improve the working accuracy and stability of the taphole machine.

[0030] Furthermore, the forward impact mechanism 1 and the backward impact mechanism 2 work alternately to achieve continuous bidirectional impact, which greatly improves the working efficiency of taphole opening. This solves the technical problem that traditional taphole opening machines with only unidirectional impact function cannot flexibly adjust the impact strategy according to the actual situation, making it difficult to open the taphole quickly and efficiently, thus restricting the smoothness and production efficiency of the entire blast furnace tapping process.

[0031] Working Principle: The bidirectional impact hydraulic tapping machine provided by this utility model includes a forward impact mechanism 1, a backward impact mechanism 2, an output shaft 3, and a rotating mechanism 4. The backward impact mechanism 2 includes a backward impact body 21 and a backward impact ring 22. The backward impact body 21 has a backward hydraulic cavity 21a along its length. The backward impact ring is built into the backward hydraulic cavity 21a. The backward hydraulic cavity 21a includes a first backward hydraulic cavity 21a1 and a second backward hydraulic cavity 21a2. The backward impact ring 22 includes a first impact ring 221 and a second impact ring 222. The first impact ring 221 and the second impact ring 222 are integrally formed. The connection between the first impact ring 221 and the second impact ring 222 is sloped. The outer diameter of the second impact ring 222 is equal to the diameter of the second backward hydraulic cavity 21a2, and the outer diameter of the first impact ring 221 is smaller than the diameter of the first backward hydraulic cavity 21a1.

[0032] Specifically, when hydraulic oil flows into the first retracting hydraulic chamber 21a1 through the retracting impact inlet 21b, the pressure inside the first retracting hydraulic chamber 21a1 gradually increases until it overcomes the resistance to the backward movement of the output shaft 3, causing the output shaft 3 to move backward. At this time, the first retracting hydraulic chamber 21a1 is connected to the second retracting hydraulic chamber 21a2, and the hydraulic oil flows out through the oil passage from the retracting impact outlet 21c. The retracting impact mechanism 2 provides a continuous backward thrust to the output shaft 3.

[0033] Furthermore, when hydraulic oil flows into the forward hydraulic chamber 11c through the forward impact inlet 11d, and the pressure in the forward hydraulic chamber 11b gradually increases to overcome the resistance to the forward movement of the output shaft 3, the output shaft 3 moves forward under the drive of the hydraulic oil pressure. When the output shaft 3 moves forward, the pressure in the forward hydraulic chamber 11b is released through the forward impact outlet 11e. The forward impact mechanism 1 provides a continuous forward thrust for the output shaft 3.

[0034] The bidirectional impact hydraulic taphole opener provided by this utility model achieves bidirectional impact through the alternating action of the forward impact mechanism 1 and the backward impact mechanism 2, thus solving the technical problems of low efficiency and limited application of traditional taphole openers in the field of iron and steel metallurgy.

[0035] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A hydraulic taphole opener of bidirectional impact, characterized in that, include: The system includes a forward impact mechanism, a backward impact mechanism, and an output shaft. The backward impact mechanism comprises a backward impact body and a backward impact ring. The backward impact body has a backward hydraulic cavity along its length. The backward impact ring is housed within the backward hydraulic cavity. The backward hydraulic cavity includes a first backward hydraulic cavity and a second backward hydraulic cavity. The backward impact ring includes a first impact ring and a second impact ring. The first impact ring and the second impact ring are integrally formed. The connection between the first impact ring and the second impact ring is sloped. The outer diameter of the second impact ring is equal to the diameter of the second backward hydraulic cavity. The outer diameter of the first impact ring is smaller than the diameter of the first backward hydraulic cavity.

2. The hydraulic taphole opener of bidirectional impact according to claim 1, characterized in that, The retraction impact body is provided with a retraction impact oil inlet and a retraction impact oil outlet; the retraction impact oil inlet is connected to the first retraction hydraulic chamber; the retraction impact oil outlet is connected to the second retraction hydraulic chamber.

3. The hydraulic taphole opener of bidirectional impact according to claim 2, characterized in that, The first impact ring is sleeved on the output shaft; the retracting impact ring is fixedly connected to the output shaft.

4. The hydraulic taphole opener of bidirectional impact according to claim 3, characterized in that, The forward impact mechanism includes a forward impact body and an oil circuit reversing valve core; the forward impact body has a mounting hole and a forward hydraulic chamber along its length; the output shaft is built into the mounting hole; the output shaft is slidably connected to the forward impact body.

5. The hydraulic taphole opener of bidirectional impact according to claim 4, characterized in that, The forward impact body also has an oil circuit reversing chamber; the oil circuit reversing valve core is built into the oil circuit reversing chamber; the forward impact body has a forward impact oil inlet and a forward impact oil outlet; the forward impact oil inlet and the forward impact oil outlet are respectively connected to the two ends of the oil circuit reversing chamber; the forward impact oil inlet is connected to the forward hydraulic chamber through an oil circuit.

6. The hydraulic taphole opener of bidirectional impact according to claim 5, characterized in that, It also includes a rotating mechanism; the rotating mechanism includes a rotating drive source and a transmission assembly; the output end of the transmission assembly is driven to the output shaft through transmission teeth; the input end of the transmission assembly is driven to the output shaft of the rotating drive source.

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