Hydraulic iron notch drill with automatic rollback function

Abstract

The utility model discloses a hydraulic iron notch drill with an automatic rollback function. The hydraulic iron notch drill comprises a rotating mechanism and an impact mechanism, the impact mechanism is in driving connection with the rotating mechanism, and the rotating mechanism comprises a rotating driving source, a first rotating body, a second rotating body and a rotating output shaft. The second rotating body is arranged in an inner cavity of the first rotating body, the second rotating body and the first rotating body are fixedly connected in an interference fit mode, the second rotating body is arranged on the rotating output shaft in a sleeving mode, one end of the rotating output shaft is fixedly connected with an iron notch opening execution unit, and the other end of the rotating output shaft is fixedly connected with the iron notch opening execution unit. Rotation body transmission teeth are arranged on the peripheral wall of the second rotation body, and output shaft first transmission teeth are arranged on the outer wall of the end, close to the second rotation body, of the rotation output shaft. The hydraulic iron notch drill solves the technical problems that the service life is shortened, the operation safety is low, the operation efficiency is low and the labor intensity is high due to the fact that no automatic rollback function exists in the technical field of iron notch drill manufacturing.

Description

Technical Field

[0001] This utility model relates to the field of iron tapping machine manufacturing technology, specifically to a hydraulic iron tapping machine with automatic retraction function. Background Technology

[0002] The taphole opener is an indispensable key piece of equipment in blast furnace ironmaking. It uses a drill bit to open the taphole channel through mechanical transmission or hydraulic drive, allowing molten iron to flow smoothly out of the blast furnace and ensuring the continuity and stability of the blast furnace ironmaking process. In actual production, the performance and operational precision of the taphole opener directly affect the blast furnace's iron tapping efficiency and safe production.

[0003] Currently, most traditional taphole openers widely used in the market employ manual control or simple mechanical limit control, lacking automatic retraction functionality. In actual operation, operators must manually retract the taphole opener based on experience. This not only carries the risk of excessive drilling due to delayed response after the taphole opens, causing prolonged friction and pressure between the drill bit, drill rod, and other components and the hard taphole area, accelerating equipment wear and shortening its lifespan; but also, at the moment the taphole opens, high-temperature molten iron may splash, and the delay in manual operation prevents the taphole opener from quickly retreating from the danger zone, seriously threatening the operator's safety. Furthermore, the limited precision of manual control makes it difficult to ensure consistent taphole opening depth and retraction time for each operation, resulting in unstable iron output, affecting blast furnace iron tapping efficiency, and increasing production costs and safety management difficulties for enterprises. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and provide a hydraulic tapping machine with automatic retraction function, thereby solving the technical problems in the field of tapping machine manufacturing technology caused by the lack of automatic retraction function, such as reduced lifespan, low operational safety, low operational efficiency, and high labor intensity.

[0005] To achieve the above technical objectives, the present invention provides a hydraulic tapping machine with an automatic retraction function, comprising:

[0006] A rotating mechanism and an impact mechanism are provided; the impact mechanism is driven to connect with the rotating mechanism; the rotating mechanism includes a rotating drive source, a first rotating body, a second rotating body, and a rotating output shaft; the second rotating body is placed inside the cavity of the first rotating body; the second rotating body and the first rotating body are fixedly connected with an interference fit; the second rotating body is sleeved on the rotating output shaft; one end of the rotating output shaft is fixedly connected to an iron-opening actuator.

[0007] The second rotating body has a rotating body transmission tooth on its peripheral wall; the outer wall of the rotating output shaft near the second rotating body has a first output shaft transmission tooth; the outer wall of the rotating output shaft near the iron-opening execution unit has a second output shaft transmission tooth.

[0008] Compared with the prior art, the beneficial effects of this utility model include:

[0009] 1. Long service life: The impact mechanism of the hydraulic taphole opening machine provided by this utility model has an automatic retraction function, which can avoid the drill bit from excessively drilling or getting stuck in the taphole, as well as the damage to the drill bit, drill rod and other components due to excessive force, thus extending the overall service life of the taphole opening machine and reducing equipment maintenance costs and replacement frequency.

[0010] 2. High operational safety: The hydraulic taphole opener provided by this utility model employs an impact mechanism with an automatic retraction function, which reduces manual intervention, minimizes the time operators spend near the taphole, and reduces risks. At the moment the taphole opens, there may be dangerous situations such as molten iron splashing; the automatic retraction function allows the taphole opener to quickly retreat away from the danger zone, ensuring the personal safety of the operator.

[0011] 3. High operating efficiency: The hydraulic taphole machine provided by this utility model adopts an impact mechanism with an automatic retraction function, which can accurately control the depth and time of taphole opening, ensuring consistent results each time. This helps to stabilize the iron output flow rate and velocity, making the iron output process smoother, reducing the iron output time, and improving the production efficiency of the blast furnace.

[0012] 4. Low labor intensity for operators: The impact mechanism of the hydraulic taphole opener provided by this utility model has an automatic retraction function, eliminating the need for manual control of the taphole opener's retraction, reducing operating steps and physical exertion, lowering labor intensity, and allowing operators to focus more on other important work processes. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the hydraulic iron tapping machine provided by this utility model;

[0014] Figure 2 This is a top view of the hydraulic taphole opening machine provided by this utility model;

[0015] Figure 3 This is a cross-sectional structural diagram of the hydraulic taphole opening machine provided by this utility model;

[0016] Figure 4 This is a schematic cross-sectional view of the hydraulic taphole machine provided by this utility model;

[0017] Figure 5This is a schematic diagram of the internal structure of the hydraulic iron-opening machine provided by this utility model. Detailed Implementation

[0018] 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.

[0019] 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.

[0020] 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.

[0021] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 This embodiment provides a hydraulic tapping machine with automatic retraction function, including: a rotating mechanism 1 and an impact mechanism 2.

[0022] Furthermore, the impact mechanism 2 is driven to connect with the rotating mechanism 1.

[0023] Furthermore, the rotating mechanism 1 drives the rotating output shaft to rotate; the impact mechanism is mainly used in the taphole opening machine to generate impact force to open the taphole.

[0024] Furthermore, the rotating mechanism 1 includes a rotating drive source 11, a first rotating body 12, a second rotating body 13, and a rotating output shaft 14.

[0025] Preferably, the rotary drive source 11 is a hydraulic drive motor, which is existing technology in the industry. In this embodiment, the hydraulic drive motor has the following advantages: 1. High output torque: The taphole machine requires a large torque to drive the drill bit to rotate and drill into the taphole. The hydraulic drive motor can provide a large output torque, meeting the working requirements of the taphole machine and ensuring that the drill bit can effectively break the material at the taphole; 2. Wide speed adjustment range: The hydraulic drive motor can achieve a wide speed adjustment range by adjusting the flow and pressure of the hydraulic system. During the taphole opening process, the drill bit speed can be flexibly adjusted according to different taphole conditions and working stages, improving the efficiency and quality of taphole opening; 3. Good starting performance: The hydraulic drive motor can output a large torque at a relatively low speed, resulting in a smooth start-up and good acceleration performance. This allows the taphole machine to quickly reach the required speed and torque during startup, reducing start-up time and improving work efficiency.

[0026] Furthermore, the second rotating body 13 is built into the inner cavity of the first rotating body 12. The second rotating body 13 is fixedly connected to the first rotating body 12 with an interference fit, and the second rotating body 13 is sleeved on the rotary output shaft 14. One end of the rotary output shaft 14 is fixedly connected to the iron-opening execution unit 15.

[0027] Furthermore, when the output shaft of the rotary drive source 11 drives the first rotary body 12 to rotate, the first rotary body 12 drives the second rotary body 13 to rotate, and at the same time drives the rotary output shaft 14 to rotate.

[0028] Furthermore, the peripheral wall of the second rotating body 13 is provided with rotating body transmission teeth, the outer wall of the rotating output shaft 14 near the second rotating body 13 is provided with output shaft first transmission teeth, and the outer wall of the rotating output shaft 14 near the iron-opening execution unit 15 is provided with output shaft second transmission teeth.

[0029] Furthermore, the first transmission gear of the output shaft meshes with the transmission gear of the rotating body, the iron-opening execution unit 15 is sleeved on the rotating output shaft 14, the inner wall of the iron-opening execution unit 15 is provided with iron-opening transmission gear, and the iron-opening transmission gear meshes and is fixedly connected with the second transmission gear of the output shaft.

[0030] Furthermore, a threaded hole is provided at one end of the rotary output shaft 14 near the iron-opening execution unit 15, and the iron-opening execution unit 15 is bolted to the rotary output shaft 14 through the threaded hole, further strengthening the fixed connection.

[0031] Preferably, the second rotating body 13 and the rotating output shaft 14, and the rotating output shaft 14 and the iron-opening actuator 15 are all connected by tooth meshing transmission. In this embodiment, tooth meshing transmission has the following advantages: 1. High efficiency: The efficiency of tooth meshing transmission can reach 98%-99%. In the energy transmission process, it can efficiently convert the input mechanical energy into the output mechanical energy, reduce energy loss, and thus improve the energy utilization rate of the entire mechanical system; 2. Compact structure: Under the condition of transmitting the same power and transmission ratio, the structure of tooth meshing transmission is more compact and occupies less space; 3. Stable transmission ratio: The transmission ratio of tooth meshing transmission depends on the number of teeth. As long as the number of teeth of the gear is determined, its transmission ratio remains unchanged, which can ensure the precise operation of the equipment.

[0032] Furthermore, the impact mechanism 2 includes a reversing valve 21, a reversing sleeve 22, a pressure relief valve 23, and a hydraulic cylinder 24.

[0033] Furthermore, the reversing valve 21 includes a reversing valve body 211 and a reversing rod 212. The reversing rod 212 is built into the inner cavity of the reversing valve body 211. The bottom end of the reversing valve body 211 is provided with three oil inlets 211a and two oil outlets 211b. The outer peripheral wall of the reversing rod 212 is provided with a reversing oil passage.

[0034] Furthermore, the reversing rod 212 has a hollow structure, and the reversing rod 212 realizes the reversing of hydraulic oil through the reversing oil circuit.

[0035] Furthermore, the reversing sleeve 22 is sleeved on the rotary output shaft 14, the reversing sleeve 22 is fixedly connected to the rotary output shaft 14 with an interference fit, the reversing sleeve 22 is built into the inner cavity of the hydraulic cylinder body 24, and the reversing sleeve 22 is slidably connected to the hydraulic cylinder body.

[0036] Furthermore, when the reversing sleeve 22 moves horizontally relative to the hydraulic cylinder 24, it drives the rotary output shaft 14 to move horizontally, thereby generating an impact force.

[0037] Furthermore, the hydraulic cylinder body 24 has three oil inlet passages and two oil outlet passages. The three oil inlet passages are connected to the three oil inlet ports 211a. The other end of the two oil inlet passages is connected to one end of the hydraulic cylinder body 24, and the other oil inlet passage is connected to the other end of the hydraulic cylinder body 24. Two oil outlet passages are symmetrically opened on the middle peripheral wall of the hydraulic cylinder body 24. One end of the two oil outlet passages is connected to the two oil outlet ports 211b, and the other end of the oil outlet passages is connected to the inner cavity of the hydraulic cylinder body 24.

[0038] Furthermore, when hydraulic oil enters the hydraulic cylinder 24 through the inlet 211a of the reversing valve 21, the hydraulic oil flows to one end face of the reversing sleeve 22 through two inlet paths. Under the pressure of the hydraulic oil, the pressure inside the hydraulic cylinder 24 increases. When the pressure increases to overcome various resistances, the reversing sleeve 22 moves in a straight line. The pressure of the hydraulic oil acts on the end face of the reversing sleeve 22, giving the reversing sleeve 22 a large thrust, thereby causing the rotary output shaft 14 to output a large impact force.

[0039] Furthermore, when a large impact force is generated in the hydraulic cylinder 24, the pressure in the hydraulic cylinder 24 is converted into kinetic energy, and the pressure drops drastically. The rotary output shaft 14 moves linearly to its maximum stroke, and the hydraulic oil flows through an oil inlet to the other end face of the reversing sleeve 22. Under the action of the hydraulic oil, the rotary output shaft gradually resets, realizing automatic retraction.

[0040] Furthermore, the impact mechanism 2 has an automatic retraction function, which has the following advantages in this embodiment: 1. Long service life: The impact mechanism 2 has an automatic retraction function, which can prevent the drill bit from excessively drilling or getting stuck in the iron hole, and prevent the drill bit, drill rod and other components from being damaged due to excessive force, thus extending the overall service life of the iron hole opening machine and reducing equipment maintenance costs and replacement frequency; 2. High operational safety: The impact mechanism 2 has an automatic retraction function, which can reduce the intervention of manual operation and reduce the time and risk of operators staying near the iron hole. At the moment the taphole opens, there may be dangerous situations such as molten iron splashing. The automatic retraction function allows the taphole opener to quickly retreat away from the danger zone, ensuring the personal safety of the operators. 3. High operating efficiency: The impact mechanism 2, with its automatic retraction function, can precisely control the depth and time of taphole opening, ensuring consistent results each time. This helps stabilize the iron flow rate and velocity, making the tapping process smoother, reducing tapping time, and improving the blast furnace's production efficiency. 4. Low labor intensity for operators: The impact mechanism 2, with its automatic retraction function, eliminates the need for manual control of the taphole opener's retraction, reducing operating steps and physical exertion, lowering labor intensity, and allowing operators to focus more on other important operational processes. Low labor intensity for operators:

[0041] Furthermore, the input end of the pressure relief valve 23 located at the upper end of the hydraulic cylinder 24 is connected to the oil outlet, and the input end of the pressure relief valve 23 located at the lower end of the hydraulic cylinder 24 is connected to the oil inlet.

[0042] Preferably, in this embodiment, the pressure relief valve 23 is mainly a safety protection device to prevent overpressure of the equipment and ensure the safe operation of the equipment.

[0043] In this embodiment, all components are sealed using sealing rings. A housing 3 is provided on the outside of the first rotating body, and a bearing 4 is provided between the housing 3 and the first rotating body 12 to support rotation.

[0044] 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 with automatic retraction function, characterized in that, include: A rotating mechanism and an impact mechanism are provided; the impact mechanism is driven to connect with the rotating mechanism; the rotating mechanism includes a rotating drive source, a first rotating body, a second rotating body, and a rotating output shaft; the second rotating body is placed inside the cavity of the first rotating body; the second rotating body and the first rotating body are fixedly connected with an interference fit; the second rotating body is sleeved on the rotating output shaft; one end of the rotating output shaft is fixedly connected to an iron-opening actuator.

2. The hydraulic tapping machine with automatic retraction function according to claim 1, characterized in that, The second rotating body has a rotating body transmission tooth on its peripheral wall; the outer wall of the rotating output shaft near the second rotating body has a first output shaft transmission tooth; the outer wall of the rotating output shaft near the iron-opening execution unit has a second output shaft transmission tooth.

3. The hydraulic tapping machine with automatic retraction function according to claim 2, characterized in that, The first transmission gear of the output shaft meshes with the transmission gear of the rotating body; the iron-opening actuator is sleeved on the rotating output shaft; the inner wall of the iron-opening actuator is provided with iron-opening transmission gears; the iron-opening transmission gears mesh and drive the second transmission gear of the output shaft.

4. The hydraulic tapping machine with automatic retraction function according to claim 3, characterized in that, The rotary output shaft has a threaded hole at one end near the iron-opening execution unit; the iron-opening execution unit is bolted to the rotary output shaft through the threaded hole.

5. The hydraulic tapping machine with automatic retraction function according to claim 4, characterized in that, The impact mechanism includes a reversing valve, a reversing sleeve, a pressure relief valve, and a hydraulic cylinder; the reversing valve includes a reversing valve body and a reversing rod; the reversing rod is built into the inner cavity of the reversing valve body; the bottom end of the reversing valve body has three oil inlets and two oil outlets; the outer peripheral wall of the reversing rod has a reversing oil passage.

6. The hydraulic tapping machine with automatic retraction function according to claim 5, characterized in that, The reversing sleeve is fitted onto the rotary output shaft; the reversing sleeve is fixedly connected to the rotary output shaft with an interference fit; the reversing sleeve is built into the inner cavity of the hydraulic cylinder; the reversing sleeve is slidably connected to the hydraulic cylinder.

7. The hydraulic taphole opener with automatic retraction function according to claim 6, characterized in that, The hydraulic cylinder body has three oil inlet passages and two oil outlet passages; the three oil inlet passages are connected to the three oil inlets; the other end of the two oil inlet passages is connected to one end of the hydraulic cylinder body; the other oil inlet passage is connected to the other end of the hydraulic cylinder body; two oil outlet passages are symmetrically opened on the central peripheral wall of the hydraulic cylinder body; one end of the two oil outlet passages is connected to the two oil outlets; the other end of the oil outlet passages is connected to the inner cavity of the hydraulic cylinder body.

8. The hydraulic tapping machine with automatic retraction function according to claim 7, characterized in that, The input end of the pressure relief valve located at the upper end of the hydraulic cylinder is connected to the oil outlet; the input end of the pressure relief valve located at the lower end of the hydraulic cylinder is connected to the oil inlet.

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