Hydraulic system of roughing mill

Abstract

The utility model relates to the technical field of metal rolling, and discloses a roughing mill hydraulic system which comprises a machine body and a bottom plate, moving wheels and a hydraulic mechanism are arranged on the bottom plate, a fixing plate and a first mounting plate are fixedly mounted on the bottom plate, a travel switch is arranged on the first mounting plate, and the travel switch is electrically connected with the hydraulic mechanism. A second mounting plate is fixedly mounted in the machine body, an opening and closing pad is fixedly mounted on the second mounting plate and corresponds to the travel switch, connecting blocks are fixedly mounted on the two sides of the second mounting plate, groove bodies are formed in the connecting blocks, and two rotating rods are rotationally mounted on a fixing plate; one side, close to the fixing plate, of the rotating rod penetrates through the fixing plate and is fixedly provided with an operation block, the other end of the rotating rod is fixedly provided with a limiting block, the groove body is matched with a whole formed by the rotating rod and the limiting block, and the rotating rod is provided with a positioning mechanism. According to the utility model, the on-off pad can be ensured to continuously and stably contact the travel switch, and continuous and stable power supply is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of metal rolling, in particular to a hydraulic system for a roughing mill. Background Art

[0002] The roughing mill is a key component of the steel rolling production line in the modern metallurgical industry. It is mainly used to achieve the initial forming of steel plates or billets. The hydraulic system of the roughing mill is used to provide the necessary power support for the roughing process. By precisely controlling the position and pressure of the rolls, it ensures that the steel can reach the expected size and shape in the initial rolling stage.

[0003] The patent currently with the announcement number CN220365807U discloses a hydraulic system for a casting and rolling mill, including a configuration frame and a limit frame. The configuration frame is provided with the main functional components of the hydraulic system, the limit frame is connected to the body of the casting and rolling mill, the configuration frame includes a base plate, the bottom surface of the base plate is provided with a running wheel, the lower surface of the base plate is provided with a slide groove, the limit frame includes a fixed plate fixedly connected to the body of the casting and rolling mill, the side of the fixed plate opposite to the base plate is fixedly connected to a cantilever, the upper surface of the cantilever is provided with a slider near the end, suitable for cooperating with the slide groove to form a sliding pair, and the side of the base plate away from the fixed plate is fixedly connected to a back plate.

[0004] However, the above device has the following problems when in use: the device continuously applies pressure to the limit switch through the wear-resistant pad to ensure the power supply of the motor. However, in actual use, the configuration frame may move slightly due to factors such as collision, vibration, hydraulic system pressure fluctuation and misoperation, causing the limit switch to separate from the wear-resistant pad, thereby affecting the continuity and stability of the power supply, which is not conducive to long-term stable use. Utility Model Content

[0005] The purpose of the utility model is to solve the problems existing in the prior art, and to propose a roughing mill hydraulic system, which can ensure that the opening and closing pads continuously and stably contact the travel switch, thereby ensuring a continuous and stable supply of electricity.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A hydraulic system of a rough rolling mill includes a machine body and a base plate, wherein a moving wheel and a hydraulic mechanism are provided on the base plate, a fixed plate and a first mounting plate are fixedly installed on the base plate, a travel switch is provided on the first mounting plate, and the travel switch is electrically connected to the hydraulic mechanism, a second mounting plate is fixedly installed inside the machine body, an opening and closing pad is fixedly installed on the second mounting plate, and the opening and closing pad corresponds to the travel switch, connecting blocks are fixedly installed on both sides of the second mounting plate, a groove is provided on the connecting block, two rotating rods are rotatably installed on the fixed plate, an operating block is fixedly installed on the side of the rotating rod close to the fixed plate, a limit block is fixedly installed on the other end of the rotating rod, the groove is adapted to the whole formed by the rotating rod and the limit block, and a positioning mechanism is provided on the rotating rod.

[0008] Preferably, the positioning mechanism includes a sliding rod, a fixed block and a fixing piece. The sliding rod is slidably installed inside the rotating rod, a pressing block is fixedly installed on the side of the sliding rod away from the operating block, a mounting ring is fixedly installed on the sliding rod, the mounting ring is slidably installed on the rotating rod, a positioning rod is fixedly installed on the mounting ring, the fixing piece is fixedly installed inside the rotating rod, a spring is fixedly installed on the fixing piece, the other end of the spring is fixedly installed on the sliding rod, the fixing block is fixedly installed on the fixing plate, and a sliding groove for the positioning rod to slide and a limiting hole adapted to the positioning rod are provided on the fixing block.

[0009] Preferably, there are two limiting holes, which are respectively located at the head and tail ends of the sliding groove, and the depth of the limiting holes is greater than the depth of the sliding groove.

[0010] Preferably, the positioning rod is always located inside the sliding groove.

[0011] Preferably, a heat dissipation fan is provided on a side of the fixing plate facing the first mounting plate, and a dustproof net is embedded and installed at the air suction port of the heat dissipation fan on the fixing plate.

[0012] Preferably, sealing gaskets are embedded and installed on the surfaces of the fixing plate in contact with the machine body, and the sealing gaskets and the machine body are in interference fit.

[0013] Preferably, a pulling handle is fixedly mounted on a side of the fixing plate facing away from the first mounting plate.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) The utility model is provided with a first mounting plate, a second mounting plate, a connecting block, a trough body, a travel switch, a rotating rod, an opening and closing pad, a limit block and a positioning mechanism. By making the bottom plate unable to move, the stability of the connection between the second mounting plate and the first mounting plate can be improved, the relative displacement caused by external factors can be reduced, and the opening and closing pad can be ensured to be able to continuously and stably contact the travel switch, thereby ensuring a continuous and stable supply of electricity and being easy to use.

[0016] (2) The present invention is provided with a fixing plate, a dustproof net and a cooling fan. The good heat dissipation design helps to reduce the problem of component aging caused by overheating. At the same time, the dustproof measures also protect the internal components from the influence of the external environment. The movement of the bottom plate can expose the cooling fan synchronously, which is convenient for maintenance activities. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of a hydraulic system for a roughing mill proposed in the present utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of a hydraulic system of a roughing mill proposed in the utility model;

[0019] Figure 3 This is a schematic diagram of the installation position of a travel switch of a roughing mill hydraulic system proposed by the utility model;

[0020] Figure 4 This is the installation position intention of the opening and closing pad of the hydraulic system of a roughing mill proposed in this utility model;

[0021] Figure 5 This is a schematic diagram of the adjustment principle of the rotary rod of the hydraulic system of a roughing mill proposed by the utility model;

[0022] Figure 6 This is a schematic diagram of the installation positions of the sliding grooves and limiting holes of the hydraulic system of a rough rolling mill proposed by the present utility model;

[0023] Figure 7 This is a schematic diagram of a positioning mechanism of a hydraulic system of a roughing mill proposed in the utility model.

[0024] In the figure: 1. Machine body; 2. Fixed plate; 3. Dustproof net; 4. Pull handle; 5. Moving wheel; 6. Bottom plate; 7. Hydraulic mechanism; 8. Sealing gasket; 9. Cooling fan; 10. First mounting plate; 11. Second mounting plate; 12. Connecting block; 13. Slot body; 14. Travel switch; 15. Rotating rod; 16. Opening and closing pad; 17. Limit block; 18. Operating block; 19. Sliding rod; 20. Pressing block; 21. Fixed block; 22. Mounting ring; 23. Positioning rod; 24. Sliding groove; 25. Limit hole; 26. Fixing piece; 27. Spring. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0026] See also Figures 1 to 7A roughing mill hydraulic system includes a machine body 1 and a base plate 6. The machine body 1 is the roughing mill. A moving wheel 5 and a hydraulic mechanism 7 are provided on the base plate 6. The moving wheel 5 is installed at the bottom of the base plate 6 so that the base plate 6 and the hydraulic mechanism 7 can move smoothly, thereby moving out of it to facilitate maintenance activities. The hydraulic mechanism 7 is a device for driving or controlling hydraulic actions. It realizes the movement of mechanical parts through the pressure of hydraulic oil. Its main components are the same as those in the comparative document (CN220365807U). A variety of valve body structures for realizing liquid flow control will also be provided in the pipeline, which belongs to the existing technology and will not be repeated here.

[0027] A fixed plate 2 and a first mounting plate 10 are fixedly mounted on the base plate 6, a travel switch 14 is provided on the first mounting plate 10, and the travel switch 14 is electrically connected to the hydraulic mechanism 7, a second mounting plate 11 is fixedly mounted inside the body 1, an opening and closing pad 16 is fixedly mounted on the second mounting plate 11, and the opening and closing pad 16 corresponds to the travel switch 14, and the opening and closing pad 16 is usually made of rubber material, taking into account both elasticity and wear resistance, and the travel switch 14 is press-type, when the opening and closing pad 16 is in direct contact with the travel switch 14, the opening and closing pad 16 can continuously squeeze the travel switch 14, so that the hydraulic mechanism 7 is energized for normal use, and when maintenance is performed, the travel switch 14 is separated from the opening and closing pad 16, and the hydraulic mechanism 7 is powered off to protect the maintenance personnel.

[0028] The second mounting plate 11 is fixedly provided with connecting blocks 12 on both sides, and a slot 13 is provided on the connecting blocks 12. Two rotating rods 15 are rotatably provided on the fixed plate 2. An operating block 18 is fixedly provided on the side of the rotating rod 15 close to the fixed plate 2 and passing through the fixed plate 2. A limit block 17 is fixedly provided on the other end of the rotating rod 15.

[0029] The groove body 13 is adapted to the whole formed by the rotating rod 15 and the limiting block 17 .

[0030] The length of the rotating rod 15 is greater than that of the slot body 13. When it is installed in place, the limit block 17 can be smoothly exposed from the slot body 13. At this time, the rotating rod 15 is rotated by operating the block 18, so that the limit block 17 and the slot body 13 are misaligned, and then the second mounting plate 11 and the first mounting plate 10 can be stably and continuously fitted together. It is often made of rubber material, which takes into account elasticity and wear resistance. The limit switch 14 is press-type. When the opening and closing pad 16 and the limit switch 14 can be tightly fitted together, the effect of continuous power supply is guaranteed.

[0031] The rotating rod 15 is provided with a positioning mechanism, which is used to fix the position of the rotating rod 15 to prevent it from accidentally rotating when not needed, and also to ensure the convenience of pulling and drawing.

[0032] The positioning mechanism includes a sliding rod 19, a fixed block 21 and a fixing part 26. The sliding rod 19 is slidably installed inside the rotating rod 15. A pressing block 20 is fixedly installed on the side of the sliding rod 19 facing away from the operating block 18. A mounting ring 22 is fixedly installed on the sliding rod 19. The mounting ring 22 is slidably installed on the rotating rod 15. A positioning rod 23 is fixedly installed on the mounting ring 22. By pressing the pressing block 20, the sliding rod 19 slides along the inside of the rotating rod 15, and then the mounting ring 22 and the positioning rod 23 retreat synchronously.

[0033] The fixing part 26 is fixedly installed inside the rotating rod 15, and a spring 27 is fixedly installed on the fixing part 26. The other end of the spring 27 is fixedly installed on the sliding rod 19. The function of the spring 27 is to reset after releasing the pressing block 20, allowing the sliding rod 19 to return to its original position and allowing the positioning rod 23 to be re-limited for the next adjustment.

[0034] The fixed block 21 is fixedly installed on the fixed plate 2. The fixed block 21 is provided with a sliding groove 24 for the positioning rod 23 to slide and a limiting hole 25 adapted to the positioning rod 23. The sliding groove 24 and the limiting hole 25 on the fixed block 21 provide a movement path and locking point for the positioning rod 23, ensuring that the positioning rod 23 can only slide and lock at a predetermined position.

[0035] Under normal circumstances, the spring 27 keeps the positioning rod 23 inside the corresponding limiting hole 25 and prevents it from moving, thereby completing the limiting activity of the rotating rod 15 .

[0036] There are two limiting holes 25, which are respectively located at the head and tail ends of the sliding groove 24, and the depth of the limiting hole 25 is greater than the depth of the sliding groove 24. The two limiting holes 25 correspond to different working states (i.e., can be pulled out and cannot be pulled out). The larger depth design ensures that the positioning rod 23 can fully enter the limiting hole 25 to achieve a firm locking effect.

[0037] The positioning rod 23 is always located inside the sliding groove 24. This design ensures that the positioning rod 23 will not fall out of the sliding groove 24 and can maintain a certain stability even in the unlocked state, thus avoiding unnecessary shaking or falling off.

[0038] When the position of the rotating rod 15 needs to be adjusted, the sliding rod 19 can be made to slide along the inside of the rotating rod 15 by pressing the pressing block 20, and the positioning rod 23 can be driven to exit the limiting hole 25. After the position adjustment is completed, the pressing block 20 is released, and the positioning rod 23 automatically resets under the action of the spring 27 and enters the new limiting hole 25 to achieve position locking.

[0039] A cooling fan 9 is provided on the side of the fixed plate 2 facing the first mounting plate 10, and a dustproof net 3 is embedded and installed at the air intake of the cooling fan 9 of the fixed plate 2. The cooling fan 9 helps the hydraulic system to dissipate heat and maintain a normal operating temperature; the dustproof net 3 effectively prevents dust from entering the inside of the fan, thereby extending the service life of the fan.

[0040] Furthermore, the movement of the bottom plate 6 can expose the cooling fan 9 synchronously, making it convenient to perform maintenance activities on the cooling fan 9 .

[0041] Sealing gaskets 8 are embedded and installed on the contact surfaces of the fixing plate 2 and the body 1. The sealing gaskets 8 and the body 1 are interference fit, which ensures a close fit between the fixing plate 2 and the body 1 and prevents the intrusion of external impurities.

[0042] A pulling handle 4 is fixedly mounted on one side of the fixing plate 2 away from the first mounting plate 10 . The pulling handle 4 facilitates the operator to push or pull the entire hydraulic system, thereby improving the maneuverability and operational convenience of the equipment.

[0043] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A roughing mill hydraulic system, comprising a machine body (1) and a base plate (6), wherein a moving wheel (5) and a hydraulic mechanism (7) are provided on the base plate (6), a fixed plate (2) and a first mounting plate (10) are fixedly mounted on the base plate (6), a travel switch (14) is provided on the first mounting plate (10), and the travel switch (14) is electrically connected to the hydraulic mechanism (7), a second mounting plate (11) is fixedly mounted inside the machine body (1), an opening and closing pad (16) is fixedly mounted on the second mounting plate (11), and the opening and closing pad (16) corresponds to the travel switch (14), and is characterized in that: Connecting blocks (12) are fixedly mounted on both sides of the second mounting plate (11), and a groove body (13) is provided on the connecting block (12). Two rotating rods (15) are rotatably mounted on the fixed plate (2). An operating block (18) is fixedly mounted on the side of the rotating rod (15) close to the fixed plate (2) and passing through the fixed plate (2). A limiting block (17) is fixedly mounted on the other end of the rotating rod (15). The groove body (13) is adapted to the integral body formed by the rotating rod (15) and the limiting block (17). A positioning mechanism is provided on the rotating rod (15).

2. A roughing mill hydraulic system according to claim 1, characterized in that: The positioning mechanism comprises a sliding rod (19), a fixing block (21) and a fixing member (26), wherein the sliding rod (19) is slidably mounted inside the rotating rod (15), a pressing block (20) is fixedly mounted on the side of the sliding rod (19) away from the operating block (18), a mounting ring (22) is fixedly mounted on the sliding rod (19), the mounting ring (22) is slidably mounted on the rotating rod (15), a positioning rod (23) is fixedly mounted on the mounting ring (22), the fixing member (26) is fixedly mounted inside the rotating rod (15), a spring (27) is fixedly mounted on the fixing member (26), the other end of the spring (27) is fixedly mounted on the sliding rod (19), the fixing block (21) is fixedly mounted on the fixing plate (2), and a sliding groove (24) for the positioning rod (23) to slide and a limiting hole (25) adapted to the positioning rod (23) are provided on the fixing block (21).

3. A roughing mill hydraulic system according to claim 2, characterized in that: The number of the limiting holes (25) is two, and the two limiting holes (25) are respectively located at the head and tail ends of the sliding groove (24), and the depth of the limiting holes (25) is greater than the depth of the sliding groove (24).

4. A roughing mill hydraulic system according to claim 3, characterized in that: The positioning rod (23) is always located inside the sliding groove (24).

5. A roughing mill hydraulic system according to claim 1, characterized in that: A cooling fan (9) is provided on one side of the fixing plate (2) facing the first mounting plate (10), and a dust screen (3) is embedded and installed on the fixing plate (2) at the air intake of the cooling fan (9).

6. A roughing mill hydraulic system according to claim 1, characterized in that: Sealing gaskets (8) are embedded and installed on the surfaces of the fixing plate (2) in contact with the machine body (1), and the sealing gaskets (8) and the machine body (1) are in interference fit.

7. A roughing mill hydraulic system according to claim 1, characterized in that: A pulling handle (4) is fixedly mounted on the side of the fixing plate (2) facing away from the first mounting plate (10).

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