A hydraulic machine

Abstract

This invention relates to the field of hydraulic press technology, specifically a hydraulic press. It includes a mounting platform with mounting holes. A fixed frame is mounted outside the mounting holes, and a forging hole is provided on the fixed frame. A moving frame is mounted within the forging hole, and the moving frame includes an upper frame and a lower frame connected by connecting columns. A drive device is provided on the fixed frame to drive the moving frame to move up and down. A hydraulic device is located at the bottom of the upper frame, and a pressing head is located below the hydraulic device. In this invention, the upper surface of the lower frame is flush with the upper surface of the fixed frame. The drive device then drives the moving frame downwards until the workpiece enters the forging hole. At this point, the sidewall of the forging hole, the upper surface of the lower frame, and the lower surface of the upper frame form a forging space. Because the workpiece is processed in a closed environment, the splashing of the oxide layer precipitated from the steel workpiece is avoided, ensuring the safety of the operator.

Description

Technical Field

[0001] This invention relates to the field of hydraulic press technology, specifically to a hydraulic press. Background Technology

[0002] A hydraulic press is a machine that uses liquid as its working medium and is made according to Pascal's principle to transmit energy to achieve various processes. Because hydraulic presses can generate large forces, they are used to forge steel.

[0003] Chinese invention patent CN216461489U discloses a four-column servo motor high-speed hot forging hydraulic press. The base frame and the servo motor are arranged side by side on the same horizontal plane. A hydraulic system is set on the top of the servo motor and is connected to the servo motor for transmission. The base frame is equipped with a worktable and four columns, which are arranged in an array. The bottom of the columns is connected to the worktable, and a movable crossbeam is set in the middle of the columns.

[0004] While the aforementioned patents can enable workpiece processing, some problems still exist during their use:

[0005] When steel is forged, the steel emits a high temperature, which keeps workers in a high-temperature environment for a long time. During the forging process, the hot steel will precipitate an oxide layer, which may peel off. This peeling high-temperature oxide layer can easily burn the skin of workers. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a hydraulic press that improves the personal safety of workers.

[0007] The technical solution adopted by this invention to solve its technical problem is a hydraulic press, including an installation platform. The installation platform is provided with a vertical installation hole. A fixed frame is provided outside the installation hole. The fixed frame is provided with a forging hole coaxial with the installation hole. A moving frame is provided inside the forging hole. The moving frame includes an upper frame and a lower frame. The upper frame and the lower frame are connected by a connecting column. A driving device is provided on the fixed frame to drive the moving frame to move up and down relative to the forging hole. A hydraulic device is provided at the bottom of the upper frame, and an extrusion head is provided below the hydraulic device.

[0008] Furthermore, a base is provided at the bottom of the mounting hole, a first positioning structure is provided above the base, and a second positioning structure that cooperates with the first positioning structure is fixed below the lower frame.

[0009] Furthermore, the base is provided with a locking mechanism, which includes a telescopic mechanism and a locking block. One end of the locking block is hinged to the base, one end of the telescopic mechanism is hinged to the base, and the other end is hinged to the locking block. The locking block is provided with a protrusion, and the bottom of the lower frame is provided with a groove that cooperates with the protrusion.

[0010] Furthermore, there are four locking mechanisms, evenly arranged on both sides of the lower frame.

[0011] Furthermore, the forging hole is square, there are four connecting columns arranged at the four corners of the forging hole, and four sets of driving devices are respectively set on the outside of the connecting columns.

[0012] Furthermore, a guide device is provided between each of the connecting columns and the side wall of the forging hole. The guide device includes a guide block and a telescopic device. The fixed end of the telescopic device is fixedly connected to the fixed frame, and the movable end of the telescopic device is fixedly connected to the guide block.

[0013] Furthermore, four guide devices are provided between each of the connecting columns and the side wall of the forging hole, and the guide devices are arranged in pairs.

[0014] Furthermore, eight guide devices are provided between each of the connecting columns and the side wall of the forging hole, with two guide devices forming a group, respectively arranged at the upper and lower parts of the forging hole.

[0015] The beneficial effects of this invention are as follows: In the initial state, the upper surface of the lower frame is flush with the upper surface of the fixed frame, which facilitates placing the steel workpiece to be processed on the upper surface of the lower frame. Then, the driving device drives the moving frame to move downward until the workpiece enters the forging hole. At this time, the side wall of the forging hole, the upper surface of the lower frame, and the lower surface of the upper frame form a forging space. The extrusion head at the bottom of the upper frame applies pressure to the workpiece to achieve the processing and shaping of the workpiece. Since the workpiece is in a relatively closed environment during processing, the splashing of the oxide layer precipitated from the steel workpiece is avoided, ensuring the safety of the operator. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention;

[0017] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0018] Figure 3 This is a schematic diagram of the initial state of the present invention;

[0019] Figure 4 This is a schematic diagram of a fixed frame;

[0020] Figure 5 yes Figure 4 A cross-sectional view along AA.

[0021] Reference numerals: 1-Mounting platform; 2-Mounting hole; 3-Fixed frame; 4-Forging hole; 5-Moving frame; 6-Upper frame; 7-Lower frame; 8-Connecting column; 9-Drive device; 10-Hydraulic device; 11-Extrusion head; 12-Base; 13-First positioning structure; 14-Second positioning structure; 15-Telescopic mechanism; 16-Locking block; 17-Protrusion; 18-Groove; 19-Guiding device; 20-Telescopic device; 21-Guiding block. Detailed Implementation

[0022] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0023] like Figure 1 As shown, the present invention discloses a hydraulic press, including a mounting platform 1, on which a vertical mounting hole 2 is provided. A fixed frame 3 is provided outside the mounting hole 2. A forging hole 4 coaxial with the mounting hole 2 is provided on the fixed frame 3. A moving frame 5 is provided inside the forging hole 4. The moving frame 5 includes an upper frame 6 and a lower frame 7, which are connected by a connecting column 8. A driving device 9 is provided on the fixed frame 3 to drive the moving frame 5 to move up and down relative to the forging hole 4. A hydraulic device 10 is provided at the bottom of the upper frame 6, and an extrusion head 11 is provided below the hydraulic device 10.

[0024] The installation platform 1 can be formed by concrete pouring. During the pouring process, cylindrical or square installation holes 2 are pre-drilled. The fixed frame 3 is a steel disc-shaped structure, set on the outside of the installation holes 2, and fixedly connected to the installation platform 1. The fixed frame 3 is provided with forging holes 4, which can be cylindrical or square. The moving frame 5 is set in the forging holes 4, and the moving frame 5 includes an upper frame 6 and a lower frame 7. It should be noted that the outer dimensions of the upper frame 6 and the lower frame 7 are both smaller than the outer dimensions of the forging holes 4. The connecting column 8 connects the upper frame 6 and the lower frame 7 into a whole. To ensure stability, the number of connecting columns 8 is at least two; the driving device 9 can be a hydraulic cylinder, a pneumatic cylinder, or a screw jack. Similarly, to ensure stability, there are at least two driving devices 9. Here, we take a hydraulic cylinder as an example. The fixed end of the hydraulic cylinder is fixedly connected to the fixed frame 3, and the movable end of the hydraulic cylinder is fixedly connected to the upper frame 6. This enables the moving frame 5 to move up and down relative to the forging hole 4. A hydraulic device 10 is provided at the bottom of the upper frame 6, and an extrusion head 11 is provided below the hydraulic device 10. The extrusion head 11 applies pressure to the steel under the action of the hydraulic device 10 to achieve the processing and shaping of the steel.

[0025] Specific operation process of this invention: See Figure 1 and Figure 3 In the initial state, the upper surface of the lower frame 7 is flush with the upper surface of the fixed frame 3, which makes it convenient to place the steel workpiece to be processed on the upper surface of the lower frame 7. Then, the drive device 9 drives the moving frame 5 to move downward until the workpiece enters the forging hole 4. At this time, the side wall of the forging hole 4, the upper surface of the lower frame 7 and the lower surface of the upper frame 6 form a forging space. The extrusion head 11 at the bottom of the upper frame 6 is used to apply pressure to the workpiece to achieve the processing and shaping of the workpiece.

[0026] To ensure the stability of the workpiece during the forging process, further, see... Figure 1 A base 12 is provided at the bottom of the mounting hole 2, and a first positioning structure 13 is provided above the base 12. A second positioning structure 14 that cooperates with the first positioning structure 13 is fixed below the lower frame 7. The base 12 is fixedly connected to the bottom of the mounting hole 2. When the driving device 9 drives the moving frame 5 to move downward, the lower frame 7 contacts the base 12, providing support for the lower frame 7. The first positioning structure 13 can be a square column or a cylindrical positioning groove. The second positioning structure 14 is adapted to the first positioning structure 13. That is, when the first positioning structure 13 is a square column positioning groove, the second positioning structure 14 is a square column positioning block.

[0027] To prevent relative movement between the base 12 and the lower frame 7 during workpiece forging, further, see... Figure 2The base 12 is equipped with a locking mechanism, which includes a telescopic mechanism 15 and a locking block 16. One end of the locking block 16 is hinged to the base 12, and one end of the telescopic mechanism 15 is hinged to the base 12, while the other end is hinged to the locking block 16. The locking block 16 is provided with a protrusion 17, and the bottom of the lower frame 7 is provided with a groove 18 that mates with the protrusion 17. The telescopic mechanism 15 can be an electric push rod, which drives the locking block 16 to rotate around the base 12, causing the protrusion 17 on the locking block 16 to engage with the groove 18 on the lower frame 7, thereby locking the base 12 and the lower frame 7.

[0028] To increase the stability of the locking between the base 12 and the lower frame 7, four locking mechanisms are further provided, evenly distributed on both sides of the lower frame 7. Two locking mechanisms are used on each side of the lower frame 7, which better prevents jumping between the base 12 and the lower frame 7.

[0029] To further improve the stability of the relative motion between the motion frame 5 and the forging hole 4, see... Figure 4 The forging hole 4 is square, and there are four connecting columns 8, which are respectively arranged at the four corners of the forging hole 4. There are four sets of driving devices 9, which are respectively arranged on the outside of the connecting columns 8.

[0030] There are four connecting columns 8 connecting the upper frame 6 and the lower frame 7, which improves the stability between the upper frame 6 and the lower frame 7. It should be noted that the projection of the four connecting columns 8 on the horizontal plane is within the projection of the forging hole 4 on the horizontal plane. The four connecting columns 8 are arranged at the four corners of the forging hole 4. In this arrangement, the side wall of the forging hole 4 will guide the connecting columns 8. At the same time, there are four sets of drive devices 9, which are arranged on the outside of the connecting columns 8. That is, each connecting column 8 has a set of drive devices 9 on its outside, which makes the movement of the moving frame 5 relative to the forging hole 4 more stable.

[0031] To reduce wear on the forging hole 4 during the movement of the motion frame 5, further, see... Figure 4 and Figure 5 Each of the connecting columns 8 is provided with a guide device 19 between the side wall of the forging hole 4 and the guide device 19 includes a guide block 21 and a telescopic device 20. The fixed end of the telescopic device 20 is fixedly connected to the fixed frame 3, and the movable end of the telescopic device 20 is fixedly connected to the guide block 21.

[0032] Each of the connecting columns 8 has two surfaces adjacent to the sidewall of the forging hole 4. These two surfaces serve as guide surfaces, and each guide surface is provided with at least one guide device 19. The guide device 19 includes a guide block 21 and a telescopic device 20, which can be a hydraulic cylinder or a pneumatic cylinder. When the motion frame 5 needs to move up and down, the telescopic device 20 drives the guide block 21 to approach the connecting column 8, providing guidance for the movement of the motion frame 5. At the same time, it can adjust the gap between the motion frame 5 and the sidewall of the forging hole 4, reducing the wear of the forging hole 4 during the movement of the motion frame 5.

[0033] Taking the example of guide devices 19 being distributed at the same height, further, four guide devices 19 are provided between each connecting post 8 and the side wall of the forging hole 4, with two guide devices 19 forming a group. Each connecting post 8 has two surfaces adjacent to the side wall of the forging hole 4, and these two surfaces serve as guide surfaces. Two guide devices 19 are provided on each guide surface, so there are four guide devices 19 on one connecting post 8.

[0034] Taking the distribution of guide devices 19 at two different heights as an example, distributing guide devices 19 at different heights can improve the stability of guidance. Furthermore, there are eight guide devices 19 between each connecting post 8 and the side wall of the forging hole 4. The guide devices 19 are arranged in pairs, one at the top and one at the bottom of the forging hole 4. Each connecting post 8 has two surfaces adjacent to the side wall of the forging hole 4. The two surfaces adjacent to the side wall of the forging hole 4 on each connecting post 8 serve as guide surfaces. Four guide devices 19 are set on each guide surface, that is, two at the top and two at the bottom of the forging hole 4. Therefore, there are eight guide devices 19 on one connecting post 8.

[0035] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A hydraulic press, comprising a mounting platform (1), wherein a vertical mounting hole (2) is provided on the mounting platform (1), a fixed frame (3) is provided on the outer side of the mounting hole (2), and a forging hole (4) coaxial with the mounting hole (2) is provided on the fixed frame (3), characterized in that: A motion frame (5) is provided inside the forging hole (4). The motion frame (5) includes an upper frame (6) and a lower frame (7). The upper frame (6) and the lower frame (7) are connected by a connecting column (8). A drive device (9) is provided on the fixed frame (3) to drive the motion frame (5) to move up and down relative to the forging hole (4). A hydraulic device (10) is provided at the bottom of the upper frame (6), and an extrusion head (11) is provided below the hydraulic device (10). A base (12) is provided at the bottom of the mounting hole (2), and a first positioning structure is provided above the base (12). The lower frame (7) is fixed with a second positioning structure (14) that cooperates with the first positioning structure (13); a locking mechanism is provided on the base (12), the locking mechanism includes a telescopic mechanism (15) and a locking block (16), one end of the locking block (16) is hinged to the base (12), one end of the telescopic mechanism (15) is hinged to the base (12), and the other end is hinged to the locking block (16), a protrusion (17) is provided on the locking block (16), and a groove (18) that cooperates with the protrusion (17) is provided at the bottom of the lower frame (7).

2. A hydraulic machine as claimed in claim 1, characterized in that: There are four locking mechanisms, which are evenly arranged on both sides of the lower frame (7).

3. A hydraulic machine as claimed in claim 1, characterized in that: The forging hole (4) is square, and there are four connecting columns (8), which are respectively arranged at the four corners of the forging hole (4). There are four sets of driving devices (9), which are respectively set on the outside of the connecting columns (8).

4. A hydraulic machine as claimed in claim 3, characterized in that: A guide device (19) is provided between each of the connecting columns (8) and the side wall of the forging hole (4). The guide device (19) includes a guide block (21) and a telescopic device (20). The fixed end of the telescopic device (20) is fixedly connected to the fixed frame (3), and the movable end of the telescopic device (20) is fixedly connected to the guide block (21).

5. A hydraulic press as described in claim 4, characterized in that: There are four guide devices (19) provided between each connecting post (8) and the side wall of the forging hole (4), and the guide devices (19) are in pairs.

6. A hydraulic machine as claimed in claim 4, characterized in that: There are eight guide devices (19) between each connecting column (8) and the side wall of the forging hole (4). The guide devices (19) are arranged in pairs, respectively at the upper and lower parts of the forging hole (4).

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