Oil pressure automatic leveling tool for flat-bulb steel

Abstract

The technical scheme relates to the technical field of ship folding tools, in particular to an oil pressure automatic leveling tool for flat-bulb steel, which comprises a base, an oil pressure adjusting device and a leveling device, a mounting cavity is formed in the base, at least one end of the mounting cavity penetrates through the side wall of the base, and a fixing structure fixed on the flat-bulb steel is arranged on the lower side of the base; the rear end of the fixed arm is inserted into the mounting cavity, and a fixed part is fixed at the front end of the fixed arm; the hydraulic cylinder is mounted on the fixed part; the upper end of the leveling arm is connected with the hydraulic cylinder, and the hydraulic cylinder drives the leveling arm to move towards the lower part of the base; wherein the leveling arm is provided with a leveling position with a downward opening, the leveling position is in a cone shape with a large lower part and a small upper part, under the action of the hydraulic cylinder, the leveling arm moves, and the offset flat-bulb steel is pushed to the middle of the leveling position through the leveling position with the large lower part and the small upper part. According to the scheme of newly designing the base and the fixed arm, the hydraulic cylinder and the leveling arm are matched to carry out automatic leveling operation, and the automatic leveling device has the advantages of being convenient to use, time-saving and labor-saving.

Description

Technical Field

[0001] This technical solution relates to the field of ship assembly tooling technology, specifically to a hydraulic automatic leveling tooling for flat spherical steel. Background Technology

[0002] The plate assembly method is a ship section assembly process, commonly used in steel structure assembly. It uses plate as a temporary connecting component, and through precise positioning and welding to fix adjacent sections, it achieves rapid docking of the hull structure while controlling accuracy and deformation. It is widely used in the shipbuilding industry.

[0003] To save materials, Chinese patent CN202421501064.5 was developed. However, the adjustment of this technology still involves manually tightening the corresponding screws to adjust the deviations in each direction. Since ships are generally made of high-strength steel, manual adjustment is time-consuming and labor-intensive, especially for leveling operations in areas with limited space. Therefore, there is an urgent need for a leveling tooling solution that is time-saving, labor-saving, easy to use, and less affected by space. Summary of the Invention

[0004] The purpose of this technical solution is to provide a hydraulic automatic leveling fixture for bulb flat steel. By designing a new base and fixed arm, and in conjunction with a hydraulic cylinder and leveling arm, it can perform automatic leveling operations, solving the problems of inconvenient operation and time-consuming and labor-intensive operation in the existing design.

[0005] The purpose of this technical solution is achieved as follows:

[0006] A hydraulic automatic leveling fixture for bulb flat steel includes:

[0007] A base with an installation cavity provided thereon, at least one end of which penetrates through the side wall of the base, and a fixing structure for fixing to the ball flat steel is provided on the lower side of the base;

[0008] The fixed arm has its rear end inserted into the mounting cavity, and a fixing part is fixed to the front end of the fixed arm;

[0009] A hydraulic cylinder, which is mounted on the fixed part;

[0010] The leveling arm is connected to the hydraulic cylinder at its upper end, and the hydraulic cylinder drives it to move downward toward the base.

[0011] The leveling arm has a downward-facing leveling position, which is cone-shaped with a larger bottom and a smaller top. Under the action of the hydraulic cylinder, the leveling arm moves, and the offset flat steel is pushed to the middle of the leveling position by the lower-larger-upper-smaller leveling position.

[0012] Preferably, the base is provided with a constraint groove, and the two sides of the leveling arm slide against the inner wall of the constraint groove.

[0013] Preferably, the mounting cavity extends through the two opposite ends of the base, and the constraint groove is also correspondingly provided on the base, so that the fixing arm can be installed on the base in different orientations, and the installation direction can be selected according to the actual situation to complete the leveling operation.

[0014] Preferably, constraint grooves are provided on both inner walls of the constraint groove, and the line connecting the constraint grooves intersects with the ball flat steel located in the constraint groove;

[0015] Both sides of the leveling arm are formed with sliding parts;

[0016] When the leveling arm is located in the constraint groove, the sliding part slides within the constraint groove, thereby constraining the position of the leveling arm.

[0017] Preferably, the fixing structure includes: a snap-fit ​​protrusion and a mounting part protruding from the lower end face of the base, the snap-fit ​​protrusion and the mounting part being oppositely distributed, a fixing groove for accommodating the arc-shaped portion of the ball flat steel being formed between the snap-fit ​​protrusion and the lower end face of the base, and a fixing screw being screwed onto the mounting part;

[0018] When the ball flat steel is placed between the snap-fit ​​protrusion and the mounting part, the screw is rotated so that its end presses against the ball flat steel, thereby pressing the arc-shaped part of the ball flat steel into the fixing groove, thus completing the fixing of the base on the ball flat steel.

[0019] Preferably, the output axis of the hydraulic cylinder, the centerline of the constraint groove, the centerline of the leveling position, and the centerline of the upper end face of the bulb flat steel are all located in the same vertical plane.

[0020] Preferably, the leveling arm is provided with a limiting part;

[0021] When the limiting part abuts against the upper end surface of the base next to the constraint groove, the leveling arm stops moving downward, and the upper bottom surface of the leveling part is on the same plane as the upper end surface of the fixing groove.

[0022] Preferably, the rear end of the fixed arm is provided with a plug-in portion, which is located below the fixed portion, and the rear end of the fixed portion is formed with an abutment surface;

[0023] When the plug is inserted into the mounting cavity, the abutting surface can abut against the upper part of the front side of the base.

[0024] Preferably, a limiting hole one for communicating with the mounting cavity is provided on the upper end face of the base, and a limiting hole two is provided on the upper side face of the insertion part;

[0025] After the connector is inserted into the mounting cavity, the first limiting hole and the second limiting hole are aligned with each other. Then, the movement of the connector within the mounting cavity is restricted by inserting a limiting rod.

[0026] Preferably, the base includes:

[0027] A fixed base plate is provided with the snap-fit ​​protrusion and mounting part on its lower end surface, and the constraint groove is also formed on the fixed base plate;

[0028] The connector is mounted on the fixed base plate by means of a fastener, and the constraint groove is located on both sides of the connector.

[0029] Preferably, the base is further provided with a detection component for controlling the operation of the hydraulic cylinder;

[0030] The detection component includes:

[0031] The detection rod is vertically and movably mounted on the fixed arm, and the lower end of the detection rod can abut against the upper end face of the ball flat steel. A detection element is movably provided at the upper end of the detection rod.

[0032] The detector is mounted on a base;

[0033] During the leveling test, the lower end of the testing rod rests against the upper surface of the bulb flat steel. As the higher bulb flat steel moves down, the testing rod also moves down until the testing piece detects the reference point set on the base. At this point, the hydraulic cylinder stops working, thus completing the leveling operation between the two bulb flat steels.

[0034] The key and beneficial technical effects of this technical solution compared to existing technologies are:

[0035] 1. This technical solution is a newly designed base with a fixed arm inserted into it. A hydraulic cylinder is fixed on the fixed arm, and a leveling arm is installed on the hydraulic cylinder. The hydraulic cylinder drives the leveling arm to move towards the bulb flat steel. With the help of the tapered leveling position that is larger at the bottom and smaller at the top, the leveling operation between the bulb flat steel is automatically realized. The entire operation only requires manual installation of the tooling onto the bulb flat steel to be leveled, and then starting the hydraulic cylinder to complete the operation. Unlike the existing design, there is no need to manually tighten the corresponding screw, which will prevent the screw from being stuck. At the same time, it does not require a large operating space. Overall, it is simple, convenient, efficient and reusable.

[0036] 2. The mounting cavity in this technical solution runs through both opposite ends of the base, and the constraint groove is also opened on both opposite ends of the base. This allows the fixing arm to be fixed on both sides of the base, so that workers can choose the insertion direction according to the actual situation to install the existing situation. In particular, it can meet the needs of some narrow areas where it is not easy to turn the tooling direction for installation. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the misalignment between the flat steel bars of the present invention.

[0038] Figure 2 This is one of the overall structural schematic diagrams of the present invention.

[0039] Figure 3 This is the second schematic diagram of the overall structure of the present invention.

[0040] Figure 4 This is a schematic diagram of the structure of the present invention, which is installed on a bulb flat steel.

[0041] Figure 5 This is a schematic diagram showing the overall installation of the present invention on a ball flat steel for leveling operations.

[0042] Figure 6 This is a schematic diagram of the entire assembly of the present invention being leveled on a bulb flat steel bar.

[0043] Figure 7 This is a schematic diagram showing the overall installation of the invention on the bulb flat steel for leveling.

[0044] Figure 8 This is a schematic diagram of the structure of the fixed substrate of the present invention.

[0045] Figure 9 The present invention relates to a hydraulic cylinder equipped with a leveling arm.

[0046] Figure 10 This is a schematic diagram of the flat steel ball of the present invention placed in the fixing groove.

[0047] Figure 11 A side view of the overall structure of the present invention.

[0048] Figure 12 This is a schematic diagram of the present invention with the detection component installed.

[0049] Figure 13 This is a cross-sectional view showing the completion of the leveling operation according to the present invention.

[0050] Figure 14 This is a schematic diagram of the level instrument of the present invention.

[0051] Figure 15 This is a schematic diagram illustrating the leveling process using a spirit level according to the present invention.

[0052] Figure 16 This is a schematic diagram of the fixed arm of the present invention.

[0053] Figure 17 This is a top view of the fixing substrate of the present invention.

[0054] Reference numerals: 1. Base; 2. Mounting cavity; 3. Fixing arm; 4. Fixing part; 5. Hydraulic cylinder; 6. Leveling arm; 7. Leveling position; 8. Constraint groove; 9. Constraint slide groove; 10. Sliding part; 11. Snap-fit ​​protrusion; 12. Mounting part; 13. Fixing groove; 14. Limiting part; 15. Insertion part; 16. Abutment surface; 17. Limiting hole one; 18. Limiting hole two; 19. Fixing base plate; 20. Insertion seat; 21. Detection rod; 22. Detection component; 23. Detector; 24. Threaded hole; 25. Horizontal plane; 26. Level. Detailed Implementation

[0055] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0056] like Figure 1 The diagram shown is a schematic of a flat steel ball that needs to be leveled.

[0057] like Figures 2-3 As shown, a hydraulic automatic leveling fixture for bulb flat steel is mainly used in the leveling operation of bulb flat steel in ships in this embodiment. This solution can also be used for the leveling operation of T-shaped steel or angle steel.

[0058] It mainly includes: base 1, fixed arm 3, hydraulic cylinder 5 and leveling arm 6;

[0059] The base 1 comprises a fixed base plate 19 and a connector 20. The fixed base plate 19 is generally rectangular (the shape is not unique). A fixing structure is provided below the fixed base plate 19 to enable the fixed base plate 19 to be installed and fixed on the ball flat steel. A constraint groove 8 is formed on one side of the fixed base plate 19. In this embodiment, the constraint groove 8 is U-shaped. The connector 20 is fixed in the middle of the fixed base plate 19. The fixing method can be bolt, welding or integral molding. A mounting cavity 2 is formed laterally on the connector 20. The mounting cavity 2 penetrates at least one side wall.

[0060] The rear end of the fixed arm 3 is provided with a plug-in part 15 and the front end is provided with a fixing part 4. The connection can be made by molding, welding or bolting. The plug-in part 15 is inserted into the mounting cavity 2 to realize the installation of the fixed arm 3 on the plug-in seat 20. After installation, the fixing part 4 is located above the constraint groove 8.

[0061] The hydraulic cylinder 5 is fixed on the fixing part 4. In this embodiment, the fixing part 4 is a fixing ring, which is sleeved on the hydraulic cylinder 5. The output end of the hydraulic cylinder 5 is facing the setting. The upper end of the leveling arm 6 is provided with a slot. The output end of the hydraulic cylinder 5 is inserted into the slot and fixed by a pin. This allows the leveling arm 6 to extend into the constraint groove 8. The two sides of the leveling arm 6 slide against the inner wall of the constraint groove 8.

[0062] The lower end of the leveling arm 6 has a downward-facing leveling position 7, which is cone-shaped with a larger bottom and a smaller top.

[0063] Combination Figures 4-7 The bulb flats that need adjustment are generally misaligned, which usually refers to lateral misalignment and / or vertical misalignment. This embodiment describes the case where both misalignment and vertical misalignment exist. In use, the base 1 is first fixed to the lower bulb flat with a fixing structure, so that the side of the base 1 with the constraint groove 8 is located at the end of the higher bulb flat. At this time, the leveling arm 6 is above the end of the higher bulb flat. Then, the hydraulic cylinder 5 is activated, causing the leveling arm 6 to move towards the bulb flat. During the movement, the inclined inner wall of the leveling position 7 contacts the bulb flat and pushes it to move. Under the action of the inclined inner wall, the bulb flat deforms and moves towards the alignment state until the lower bulb flat aligns with the higher bulb flat. The hydraulic cylinder 5 stops working and maintains this state until welding is completed. Then, the tooling is removed, and the part blocked by the tooling is welded back on, thus completing the overall operation.

[0064] Alternatively, the constraint groove 8 can be omitted, and the leveling arm 6 can be used directly to level the ball flat steel.

[0065] This technical solution involves a newly designed base 1 with a fixed arm 3 inserted into it. A hydraulic cylinder 5 is fixed to the fixed arm 3, and a leveling arm 6 is mounted on the hydraulic cylinder 5. The hydraulic cylinder 5 drives the leveling arm 6 to move towards the bulb flat steel. This, combined with the tapered leveling position 7 (larger at the bottom and smaller at the top), automatically achieves the leveling operation between the bulb flat steel pieces. The entire operation only requires manual installation of the tooling onto the bulb flat steel to be leveled, followed by activating the hydraulic cylinder 5 to complete the task. Unlike existing designs, there is no need to manually tighten the corresponding screws, eliminating the possibility of not being able to tighten them. Furthermore, it requires less operating space and is simple, convenient, efficient, and reusable.

[0066] To improve the practicality and convenience of the tooling in this solution, the hydraulic automatic leveling tooling for the spherical flat steel in this technical solution is designed to be usable on both sides. That is, the mounting cavity 2 runs through the two opposite ends of the base 1, and the constraint groove 8 is also opened on the base 1 accordingly. This allows the fixing arm 3 to be installed on the base 1 in different orientations. The installation direction can be selected according to the actual situation to complete the leveling operation.

[0067] To ensure more accurate leveling during use, vertical constraint grooves 9 are provided on the inner walls of the opposing sides of the constraint groove 8; sliding parts 10 are formed on both sides of the leveling arm 6; the sliding parts 10 can extend into the constraint grooves 9 and slide within them. Through the cooperation of the constraint grooves 9 and the sliding parts 10, the leveling arm 6 can be constrained, preventing it from swinging arbitrarily and ensuring accurate leveling. At the same time, it protects the hydraulic cylinder 5 and prevents the hydraulic cylinder 5 from bending and being damaged due to lateral movement of the leveling arm 6.

[0068] Combination Figure 6 At the same time, the line connecting the constraint grooves 9 intersects with the ball flat steel located in the constraint groove 8; this ensures that when the leveling arm 6 enters the constraint groove 8, it can "straddle" the ball flat steel, ensuring smooth leveling.

[0069] The aforementioned fixing structure is mainly for fixing the base 1 to the steel. In this embodiment, a bulb flat steel is used as an example.

[0070] like Figures 8-10 As shown, the fixing structure includes: a snap-fit ​​protrusion 11 and a mounting part 12 protruding from the lower end face of the base 1. The snap-fit ​​protrusion 11 and the mounting part 12 are oppositely distributed. The snap-fit ​​protrusion 11 is inclined and forms an angle with the lower end face of the base 1. The angle is used to form a fixing groove 13 to accommodate the arc-shaped part of the bulb flat steel. A threaded hole 24 is opened in the mounting part 12. The height of the threaded hole 24 is located within the depth corresponding to the lateral direction of the fixing groove 13. A fixing screw is screwed into the threaded hole 24.

[0071] The gap between the lower end of the snap-fit ​​protrusion 11 and the mounting part 12 is large enough for the arc-shaped part of the ball flat steel to pass through, so that the ball flat steel can be placed into the fixing groove 13. Then, the fixing screw is rotated so that its end presses against the ball flat steel, thereby pressing the arc-shaped part of the ball flat steel into the fixing groove 13, thus completing the fixing of the base 1 on the ball flat steel.

[0072] like Figure 10 As shown, the position of the threaded hole 24 is optimized in design, so that the end face of the fixing screw is directly opposite the inclined inner wall of the snap-fit ​​protrusion 11. This allows the two to more stably resist the ball flat steel.

[0073] The end face of the fixing screw and the inclined inner wall of the snap-fit ​​convex plate 11 are opposite faces that are exactly at the same position on the flat steel.

[0074] The output axis of the hydraulic cylinder 5, the centerline of the constraint groove 8, the centerline of the leveling position 7, and the centerline of the upper end face of the bulb flat steel are all located in the same vertical plane.

[0075] This design ensures accurate leveling and makes it easier to align the flat steel bars.

[0076] One method for aligning and leveling the flat steel bars is to manually observe them with the naked eye and then manually stop the hydraulic cylinder 5 after alignment. However, since the alignment seam between the flat steel bars is located below the base 1, it may be blocked by the base 1. In particular, the alignment between the heights of the flat steel bars is the most difficult to observe. Therefore, in order to make it easier to observe and control the leveling, the following methods were designed.

[0077] In the first scheme, the upper end of the leveling position 7 is designed as a horizontal plane 25. The width of the horizontal plane 25 corresponds to the maximum width of the upper end of the bulb flat steel. Combined with the design mentioned above, where the output axis of the hydraulic cylinder 5, the centerline of the constraint groove 8, the centerline of the leveling position 7, and the centerline of the upper end face of the bulb flat steel are all located in the same vertical plane, a situation can be formed where, when the upper end face of the bulb flat steel abuts against the horizontal plane 25, both sides of the bulb flat steel abut against the inclined surface of the leveling position 7 at the same time. At this time, the bulb flat steel is aligned in the horizontal direction. Then, as long as the vertical alignment is ensured, the leveling operation can be completed.

[0078] Combination Figure 9 , Figure 11 In terms of vertical alignment, it is mainly achieved by controlling the downward movement distance of the leveling arm 6, that is, a limiting part 14 is provided on the leveling arm 6. When the leveling arm 6 moves down to the limit part 14 and abuts against the upper end surface of the base 1 next to the constraint groove 8, the leveling arm 6 stops moving down. At this time, the upper horizontal surface 25 of the leveling position 7 and the upper end surface of the fixing groove 13 (the lower end surface of the fixing base plate 19) are on the same plane. Since the ball flat steel is tightly attached to the horizontal surface 25 and the upper end surface of the fixing groove 13 (the lower end surface of the fixing base plate 19) respectively, the height leveling operation between the ball flat steel can be realized.

[0079] The second option is to also provide a detection component on the base 1;

[0080] Combination Figure 12 , Figure 13 The detection component includes:

[0081] The detection rod 21 is vertically and movably installed (through) on the fixed arm 3, and the lower end of the detection rod 21 can abut against the upper end face of the ball flat steel. A detection element 22 is movably provided at the upper end of the detection rod 21.

[0082] Detector 23 is mounted on base 1;

[0083] During the leveling test, since the lower end of the detection rod 21 is against the upper surface of the bulb flat steel, as the higher bulb flat steel moves down, the detection rod 21 also moves down until the detection piece 22 detects the reference point corresponding to the detector 23 set on the base 1, the hydraulic cylinder 5 stops working, and the leveling operation between the two bulb flat steels is realized.

[0084] The detection element 22 can be a photoelectric switch, and the detector 23 can be a light-shielding protrusion mounted on the base 1. First, calculate the downward movement height of the detection rod 21 (the height when the lower end face of the detection rod 21 is on the same plane as the lower end face of the fixed substrate 19). Install the detector 23 at the set position so that after the detection rod 21 moves down to the set height, the photoelectric switch moves to the horizontal height of the detector 23. The detector 23 blocks the light from the photoelectric opening, thus triggering the photoelectric switch and sending a signal to the circuit board. The circuit board controls the oil pump to stop working, thereby achieving automatic leveling and shutdown. Alternatively, the positions of the photoelectric switch and the light-shielding protrusion can be interchanged; the light-shielding protrusion is mounted on the rod, and the photoelectric switch is mounted on the base 1. A spring can be fitted onto the detection rod 21, with the ends of the springs abutting against the fixed arm 3 and the detection rod 21 respectively, so that the detection rod 21 always has a downward tendency, ensuring that the lower end of the detection rod 21 can always abut against the ball flat steel. This way, even with a horizontal fixed base 1, the corresponding function can be achieved.

[0085] [Variation Example]

[0086] Combination Figure 14 and Figure 15 The detection component 22 installed on the upper end of the detection rod 21 is a level 26. One end of the level 26 is hinged to the upper end of the detection rod 21, which can swing and tilt downwards. After calculating the height, the movable end of the level 26 will contact the fixed part 4 as the detection rod 21 moves down. As it moves down, the level 26 will slowly level itself. When the level 26 is level, it proves that the height is aligned.

[0087] like Figure 16 As shown, regarding the design of the fixing arm 3: the rear end of the fixing arm 3 is provided with a plug-in part 15, which is located below the fixing part 4, and the rear end of the fixing part 4 is formed with an abutment surface 16.

[0088] When the plug-in part 15 is inserted into the mounting cavity 2, the abutting surface 16 can abut against the upper part of the front side of the base 1.

[0089] Because during the leveling process, the force exerted by the hydraulic cylinder 5 on the fixed part 4 is upward. If the force is simply shared by the plug part 15, it will cause the plug part 15 to bend over time, which will affect the subsequent leveling operation.

[0090] The current top and bottom design, combined with the abutment surface 16, allows the abutment surface 16 to share some of the force during actual use, which is then transferred to the base 1, thereby reducing the bending degree of the insertion part 15 and ensuring the leveling accuracy and overall service life.

[0091] refer to Figure 12In order to ensure the stable connection of the plug part 15 between the bases 1, a limiting hole 17 for the conductive mounting cavity 2 is opened on the upper end face of the plug base 20, and a limiting hole 18 is opened on the side of the plug part 15.

[0092] After the plug-in part 15 is inserted into the mounting cavity 2, the limiting hole 17 and the limiting hole 18 are aligned with each other, and the movement of the plug-in part 15 in the mounting cavity 2 is restricted by inserting a limiting rod.

[0093] like Figure 17 As shown, the constraint groove 8 on the fixed base plate 19 is designed in a U-shape, mainly to increase the deformation resistance of the end and ensure the leveling accuracy. At the same time, in order to facilitate the observation of the alignment status of the ball flat steel and reduce costs, it is also necessary to ensure the constraint of the leveling arm 6. Limiting posts 27 protrude downward from the ends on both sides of the constraint groove 8, and the constraint groove 9 is opened on the inner side of the limiting post 27. This can ensure the constraint of the entire side wall of the leveling arm 6, while saving materials in other parts, thus achieving the purpose of saving materials.

[0094] The foregoing has shown and described the basic principles, main features, and advantages of this technical solution. Those skilled in the art should understand that this technical solution is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this technical solution. Various changes and modifications can be made to this technical solution without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed technical solution. The scope of protection of this technical solution is defined by the appended claims and their equivalents.

Claims

1. A hydraulic automatic leveling fixture for bulb flat steel, characterized in that, include: A base (1) is provided with an installation cavity (2) on it. At least one end of the installation cavity (2) penetrates the side wall of the base (1). A fixing structure for fixing to the ball flat steel is provided on the lower side of the base (1). The fixed arm (3) has its rear end inserted into the mounting cavity (2), and the front end of the fixed arm (3) is fixed with a fixing part (4); A hydraulic cylinder (5) is mounted on the fixed part (4); The leveling arm (6) is connected to the hydraulic cylinder (5) at its upper end, and the hydraulic cylinder (5) drives it to move downward toward the base (1); The leveling arm (6) has a downward-facing leveling position (7). The leveling position (7) is cone-shaped with a larger bottom and a smaller top. Under the action of the hydraulic cylinder (5), the leveling arm (6) moves and the offset flat steel is pushed to the middle of the leveling position (7) by the lower-larger-upper-smaller leveling position (7).

2. The hydraulic automatic leveling fixture for bulb flat steel according to claim 1, characterized in that: The base (1) is provided with a constraint groove (8), and the two sides of the leveling arm (6) slide against the inner wall of the constraint groove (8).

3. The hydraulic automatic leveling fixture for bulb flat steel according to claim 2, characterized in that: The mounting cavity (2) extends through the two opposite ends of the base (1), and the constraint groove (8) is also opened on the base (1) accordingly, so that the fixed arm (3) can be installed on the base (1) in different directions. The installation direction can be selected according to the actual situation, and the leveling operation can be completed.

4. The hydraulic automatic leveling fixture for bulb flat steel according to claim 2 or 3, characterized in that: The inner walls on both sides of the constraint groove (8) are provided with constraint grooves (9), and the line connecting the constraint grooves (9) intersects with the ball flat steel located in the constraint groove (8). The leveling arm (6) has sliding parts (10) formed on both sides; When the leveling arm (6) is located in the constraint groove (8), the sliding part (10) slides in the constraint groove (9) to constrain the position of the leveling arm (6).

5. The hydraulic automatic leveling fixture for bulb flat steel according to claim 4, characterized in that: The fixing structure includes: a snap-fit ​​protrusion plate (11) and a mounting part (12) protruding from the lower end face of the base (1), the snap-fit ​​protrusion plate (11) and the mounting part (12) are oppositely distributed, a fixing groove (13) is formed between the snap-fit ​​protrusion plate (11) and the lower end face of the base (1) to accommodate the arc-shaped part of the ball flat steel, and a fixing screw is screwed onto the mounting part (12); When the ball flat steel is placed between the snap-fit ​​protrusion (11) and the mounting part (12), the screw is rotated so that its end presses against the ball flat steel, thereby pressing the arc-shaped part of the ball flat steel into the fixing groove (13), thus completing the fixing of the base (1) on the ball flat steel.

6. The hydraulic automatic leveling fixture for bulb flat steel according to claim 5, characterized in that: The output axis of the hydraulic cylinder (5), the centerline of the constraint groove (8), the centerline of the leveling position (7), and the centerline of the upper end face of the bulb flat steel are all located in the same vertical plane.

7. The hydraulic automatic leveling fixture for bulb flat steel according to claim 4, characterized in that: The leveling arm (6) is provided with a limiting part (14); When the limiting part (14) abuts against the upper end surface of the base (1) next to the constraint groove (8), the leveling arm (6) stops moving down, and the upper bottom surface of the leveling position (7) is on the same plane as the upper end surface of the fixing groove (13).

8. The hydraulic automatic leveling fixture for bulb flat steel according to claim 1, characterized in that: The fixed arm (3) has a plug-in part (15) at its rear end, which is located below the fixed part (4), and the rear end of the fixed part (4) has an abutment surface (16). When the plug (15) is inserted into the mounting cavity (2), the abutting surface (16) can abut against the upper part of the front side of the base (1).

9. The hydraulic automatic leveling fixture for bulb flat steel according to claim 8, characterized in that: The upper end face of the base (1) is provided with a limiting hole (17) for the conductive mounting cavity (2), and the upper side face of the plug-in part (15) is provided with a limiting hole (18). After the plug-in part (15) is inserted into the mounting cavity (2), the limiting hole one (17) and the limiting hole two (18) are aligned with each other, and the movement of the plug-in part (15) in the mounting cavity (2) is restricted by inserting a limiting rod.

10. The hydraulic automatic leveling fixture for bulb flat steel according to claim 5, characterized in that: The base (1) includes: The fixed base plate (19) has the snap-fit ​​protrusion (11) and mounting part (12) provided on its lower end surface, and the constraint groove (8) is also formed on the fixed base plate (19). The connector (20) is mounted on the fixed base plate (19) by means of a fastener, and the constraint groove (8) is located on both sides of the connector (20).

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