A quick-change AGC hydraulic cylinder device for heavy plate rolling mills

Abstract

This invention relates to the field of AGC cylinder replacement in heavy plate rolling mills, and discloses a device for quickly replacing AGC hydraulic cylinders in heavy plate rolling mills. The device includes a bottom connecting seat and a lifting bracket. The bottom connecting seat includes a load-bearing structure and a support structure. The load-bearing structure is positioned above the support structure, and the lifting bracket is positioned above the bottom connecting seat. The load-bearing structure comprises two side plates, two connecting plates, two partitions, a bottom plate, and four sets of load-bearing blocks. The two side plates are connected by two connecting plates to form a rectangular frame. Two partitions are fixedly installed inside the rectangular frame. Notches are provided on the side plates corresponding to the partitions, and load-bearing blocks are fixedly installed inside the four notches. When in use, this device uses a bottom connecting seat to support the roll changing table and a lifting bracket for hoisting, significantly shortening the entire maintenance and replacement process time and greatly reducing maintenance intensity.

Description

Technical Field

[0001] This invention relates to the field of AGC cylinder replacement in heavy plate rolling mills, specifically to a device for quickly replacing AGC hydraulic cylinders in heavy plate rolling mills. Background Technology

[0002] A key technology in heavy plate rolling mills is AGC (automatic gage control), a core control function of the mill. Hydraulic AGC mills offer advantages such as fast response and high control precision. AGC hydraulic cylinders are installed under the support rolls on both the operating and drive sides of the mill. These cylinders precisely control the roll gap and plate thickness via sensor signals. However, AGC hydraulic cylinders can wear down during frequent use, leading to oil leaks. These leaks not only damage the oil system but also affect the mill's control precision. Therefore, replacement of the AGC hydraulic cylinder is necessary immediately upon noticing wear. Each AGC hydraulic cylinder weighs approximately 36 tons. Replacing these cylinders is a time-consuming and challenging maintenance task in heavy plate rolling mill overhauls, requiring the removal of relevant components from the mill stand, such as the upper and lower work rolls, upper and lower support rolls, and step plates. To address this, we propose a rapid replacement device for heavy plate rolling mill AGC hydraulic cylinders. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a device for quickly changing the AGC hydraulic cylinder of a heavy plate rolling mill, thus solving the aforementioned problems.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solution: a quick-change AGC hydraulic cylinder device for a heavy plate rolling mill, comprising a bottom connecting seat and a lifting bracket, wherein the bottom connecting seat comprises a load-bearing structure and a support structure, the load-bearing structure is disposed above the support structure, and the lifting bracket is disposed above the bottom connecting seat.

[0005] Preferably, the load-bearing structure comprises two side plates, two connecting plates, two partitions, a bottom plate, and four sets of load-bearing blocks. The two side plates are connected by two connecting plates to form a rectangular frame. Two partitions are fixedly installed inside the rectangular frame. The side plates have notches at the positions corresponding to the partitions. Load-bearing blocks are fixedly installed inside the four notches. The bottom plate is fixedly installed at the bottom of the connecting plates and the side plates.

[0006] Preferably, the bottom connecting seat includes support legs fixedly installed at the four corners of the bottom of the side plate. The two horizontal support legs are connected by an inclined second rod and a connecting rod four and a connecting rod two. The two connecting rod four are installed on the inclined second rod, and the side of the connecting rod four and the connecting rod two that are opposite to each other is connected to the support leg. The two vertical support legs are connected by an inclined first rod and a connecting rod one and a connecting rod three. The side of the connecting rod one and the connecting rod three that are opposite to each other is connected to the support leg.

[0007] Preferably, a base is fixedly installed at the bottom of each of the support legs.

[0008] Preferably, the lifting bracket consists of a connecting component and a lifting component, wherein the lifting component is connected to the connecting component, and a rectangular box is provided between the lifting component and the connecting component.

[0009] Preferably, the connecting assembly includes two bottom supports and a crossbeam. The two bottom supports are connected by the crossbeam, and the tops of the two bottom supports are connected to the bottom of the rectangular box. Rectangular notches are provided at the two ends of the bottom of the bottom supports, and bottom beams are fixedly installed inside the corresponding two notches.

[0010] Preferably, the rectangular box body consists of two vertical plates, two horizontal plates, and two bottom support connecting plates. The two vertical plates and the two horizontal plates are fixedly connected together to form a rectangular frame. The bottom support connecting plates are fixedly installed on the upper and lower sides of the rectangular frame, respectively.

[0011] Preferably, the rectangular frame is fixedly installed with vertical and horizontal ribs arranged in a cross shape.

[0012] Preferably, the lifting device assembly includes two top connecting plates, a fixing plate is fixedly installed between the two top connecting plates, and a top plate is fixedly installed on the top of the top connecting plates. Multiple sets of rectangular slots are opened on the top connecting plates, and rectangular protrusions are fixedly installed on the top plates at the positions corresponding to the rectangular slots. Three sets of reinforcing ribs are fixedly installed on the side of the top connecting plates.

[0013] Compared with the prior art, the present invention provides a device for quickly changing the AGC hydraulic cylinder of a heavy plate rolling mill, which has the following advantages:

[0014] 1. This quick-change AGC hydraulic cylinder equipment for heavy plate rolling mills features a bottom connecting seat for supporting the roll changer and a lifting bracket for hoisting, which greatly shortens the time and reduces the intensity of maintenance. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the bottom connector of the present invention;

[0016] Figure 2 This is a schematic diagram of the lifting device bracket of the present invention;

[0017] Figure 3 This is a side view of the lifting device support.

[0018] Figure 4 A front view diagram of the lifting device support;

[0019] Figure 5 for Figure 4 AA section view diagram;

[0020] Figure 6 This is a top view of the lifting device support.

[0021] In the diagram: 1. Side plate; 2. Bottom plate; 3. Partition plate; 4. Connecting plate; 5. Bearing block; 6. Support leg; 7. Base; 8. Connecting rod one; 9. Connecting rod two; 10. Connecting rod three; 11. Diagonal rod one; 12. Connecting rod four; 13. Diagonal rod two; 14. Bottom bracket; 15. Horizontal beam; 16. Vertical plate; 17. Horizontal plate; 18. Bottom beam; 19. Fixing plate; 20. Top connecting plate; 21. Reinforcing rib; 22. Top plate; 23. Rectangular protrusion; 24. Bottom bracket connecting plate; 25. Vertical rib; 26. Horizontal rib. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figure 1-6 A quick-change AGC hydraulic cylinder device for a heavy plate rolling mill includes a bottom connecting seat and a lifting bracket. The bottom connecting seat includes a load-bearing structure and a support structure. The load-bearing structure is located above the support structure, and the lifting bracket is located above the bottom connecting seat.

[0024] Furthermore, the load-bearing structure comprises two side plates 1, two connecting plates 4, two partitions 3, a bottom plate 2, and four sets of load-bearing blocks 5. The two side plates 1 are connected by two connecting plates 4 to form a rectangular frame. Two partitions 3 are fixedly installed inside the rectangular frame. The side plates 1 have notches at the positions corresponding to the partitions 3. Load-bearing blocks 5 are fixedly installed inside the four notches. The bottom plate 2 is fixedly installed on the bottom of the connecting plates 4 and the side plates 1.

[0025] Furthermore, the bottom connecting seat includes support legs 6 fixedly installed at the four corners of the bottom of the side plate 1. The two horizontal support legs 6 are connected by an inclined diagonal rod 13, a connecting rod 12, and a connecting rod 9. The two connecting rods 12 are installed on the diagonal rod 13, and the opposite sides of the connecting rods 12 and 9 are connected to the support legs 6. The two vertical support legs 6 are connected by an inclined diagonal rod 11, a connecting rod 8, and a connecting rod 310. The opposite sides of the connecting rods 8 and 310 are connected to the support legs 6.

[0026] Furthermore, a base 7 is fixedly installed at the bottom of each support leg 6.

[0027] Furthermore, the spreader bracket consists of a connecting component and a spreader component, the spreader component is connected to the connecting component, and a rectangular box is provided between the spreader component and the connecting component.

[0028] Furthermore, the connecting assembly includes two bottom supports 14 and a crossbeam 15. The two bottom supports 14 are connected by the crossbeam 15. The tops of the two bottom supports 14 are connected to the bottom of the rectangular box. Rectangular notches are provided at the bottom ends of both sides of the bottom of the bottom supports 14, and bottom beams 18 are fixedly installed inside the corresponding two notches.

[0029] Furthermore, the rectangular box is composed of two vertical plates 16, two horizontal plates 17, and two bottom support connecting plates 24. The two vertical plates 16 and the two horizontal plates 17 are fixedly connected together to form a rectangular frame. The bottom support connecting plates 24 are fixedly installed on the upper and lower sides of the rectangular frame, respectively.

[0030] Furthermore, the interior of the rectangular frame is fixedly equipped with vertical ribs 25 and horizontal ribs 26 arranged in a cross shape.

[0031] Furthermore, the lifting device assembly includes two top connecting plates 20, a fixing plate 19 is fixedly installed between the two top connecting plates 20, and a top plate 22 is fixedly installed on the top of the top connecting plates 20. Multiple sets of rectangular slots are opened on the top connecting plates 20, and rectangular protrusions 23 are fixedly installed on the top plate 22 at the positions corresponding to the rectangular slots. Three sets of reinforcing ribs 21 are fixedly installed on the side of the top connecting plates 20.

[0032] When in use, this device is equipped with a bottom connecting seat to support the roller changer stool and is hoisted using a lifting bracket, which greatly shortens the time of the entire maintenance and replacement process and greatly reduces the maintenance intensity.

[0033] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A quick-change AGC hydraulic cylinder device for a wide and heavy plate rolling mill, characterized by, The utility model provides a bottom connecting seat and spreader support, the bottom connecting seat includes bearing structure and support structure, bearing structure is arranged above support structure, spreader support is arranged above bottom connecting seat, bearing structure includes two side plates (1), two connecting plates (4), two partition plates (3), bottom plate (2) and four groups of bearing blocks (5), two side plates (1) are connected through two connecting plates (4) between two side plates (1), form rectangular frame body, two partition plates (3) are fixedly installed inside rectangular frame body, the position of side plate (1) corresponds the partition plate (3) and is equipped with the notch, four notches are fixedly installed with bearing block (5) inside four notches, bottom plate (2) is fixedly installed in the bottom of connecting plate (4) and side plate (1), the spreader support is by connecting assembly and spreader assembly, the spreader assembly is connected with connecting assembly, and the rectangular box body is arranged between spreader assembly and connecting assembly, the connecting assembly includes two bottom supports (14), crossbeam (15), two bottom supports (14) are connected through crossbeam (15) between two bottom supports (14), the top of two bottom supports (14) is connected with the bottom of rectangular box body, the bottom of bottom support (14) both sides end is equipped with rectangular notch, the inside fixed mounting of corresponding two notches has bottom beam (18), the rectangular box body is by two vertical boards (16), two horizontal boards (17) and two bottom support connecting plates (24) are formed rectangular frame, rectangular frame's upper and lower sides are fixedly installed with bottom support connecting plate (24) respectively, the spreader assembly includes two top connecting plates (20), two top connecting plates (20) are fixedly installed with fixed plate (19) between two top connecting plates (20), and the top of top connecting plate (20) is fixedly installed with top plate (22), a plurality of rectangular notches are set up on top connecting plate (20), the top plate (22) is fixedly installed with rectangular convex (23) on the position of rectangular notch, the side of top connecting plate (20) is fixedly installed with three groups of reinforcing bars (21).

2. The quick-change AGC hydraulic cylinder device for a wide and thick plate rolling mill according to claim 1, characterized in that: The bottom connecting seat includes support leg (6) fixedly installed in the four corners of the bottom of side plate (1), the oblique inclined rod two (13) and connecting rod four (12) and connecting rod two (9) are connected between the two support legs (6) of horizontal direction, two connecting rod fours (12) are installed on inclined rod two (13), and the side of connecting rod four (12) and connecting rod two (9) away from each other is connected with support leg (6), the oblique inclined rod one (11) and connecting rod one (8) and connecting rod three (10) are connected between the two support legs (6) of vertical direction, and the side of connecting rod one (8) and connecting rod three (10) away from each other is connected with support leg (6).

3. The quick-change AGC hydraulic cylinder device for a wide and heavy plate mill according to claim 2, characterized in that: The bottom of each support leg (6) is fixedly installed with base (7).

4. The quick-change AGC hydraulic cylinder device for a wide and thick plate rolling mill according to claim 1, characterized in that: The inside of rectangular frame is fixedly installed with vertical rib (25) and horizontal rib (26) arranged in cross shape.

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