Hydraulic manipulator of plate mill

Abstract

The utility model provides a plate mill hydraulic manipulator which comprises two pushing structures symmetrically arranged on the two sides of a rolling line, and each pushing structure comprises a pushing plate arranged along the rolling line; the movable frame comprises two push rods and at least one connecting beam, the push rods extend in the direction perpendicular to the rolling line, one end of each push rod is connected with the push plate, and the connecting beams are parallel to the push plate and connected between the two push rods; the driving structure is provided with a hydraulic cylinder and a hydraulic support, the hydraulic cylinder is arranged between the two push rods, the hydraulic cylinder is provided with a hydraulic section capable of moving in the axial direction parallel to the push rods, and the hydraulic section is connected with the connecting beam and drives the moving frame to reciprocate in the axial direction of the push rods through the connecting beam; the hydraulic support is provided with a rotating seat capable of rotating around the horizontal line and the vertical line, the hydraulic cylinder is hinged to the rotating seat, and the problem that the stability of the whole structure of push rods on the same side is poor is solved.

Description

Technical Field

[0001] This utility model relates to the field of plate rolling mill technology, and in particular to a hydraulic pusher for plate rolling mills. Background Technology

[0002] The description in this section provides only background information related to the disclosure of this utility model and does not constitute prior art.

[0003] In recent years, hydraulically driven cylinders with rack and pinion mechanisms have become common in the pusher sections of medium and heavy plate rolling mills. Typically, two hydraulic cylinders drive push rods on each side (drive side and operating side), with the push plate suspended from the push rod head via pins, thus opening and closing the push plate. The two push rods on the same side are mechanically synchronized via a rack and pinion mechanism and a synchronous shaft, while the push rods on opposite sides are synchronized by displacement sensors inside the hydraulic cylinders. Support rollers, pressure rollers, and side guide rollers are installed in a closed housing to guide the push rods. However, in practical use, this type of device often encounters a series of problems. For example, the hydraulic cylinders are positioned above the push rods, making them the highest point of the equipment, approximately 2000mm above the roll surface elevation, which hinders operators' observation of the production status in the work area. Meanwhile, the two push rods on the same side are mechanically synchronized via a rack and pinion mechanism and a synchronous shaft. Due to the backlash in the rack and pinion mechanism, and with wear, this backlash increases, reducing the synchronicity of the two push rods on the same side. This exacerbates uneven wear on the wear-resistant liners on the push plate and makes the synchronous tie rod prone to breakage, also making push plate maintenance inconvenient. Furthermore, during the actual operation of the push plate, when the pusher is aligning, the steel plate is at an angle. From the moment the pusher contacts the steel plate until it is aligned, the pusher experiences a reaction force from the steel plate. This force is not aligned with the direction of the hydraulic cylinder's output and forms an angle, resulting in an off-center load that persists. When the steel plate has a camber, it may sometimes hit the pusher, causing significant off-center load. In case of an accident, the steel plate may impact the pusher at an angle, causing the pusher to bear a large off-center load. This imbalance in the forces borne by the two push rods on the same side also reduces their service life and weakens the overall stability of the structure formed by the two push rods.

[0004] It should be noted that the above introduction to the technical background is only for the purpose of providing a clear and complete explanation of the technical solutions of this utility model and facilitating understanding by those skilled in the art. It should not be assumed that these technical solutions are known to those skilled in the art simply because they have been described in the background section of this utility model. Utility Model Content

[0005] The purpose of this invention is to provide a hydraulic pusher for a plate rolling mill, which solves the problem of poor stability of the overall structure of the pusher rod on the same side.

[0006] The above-mentioned objectives of this utility model are mainly achieved by the following technical solutions:

[0007] This utility model provides a hydraulic pusher for a plate rolling mill, comprising two push structures symmetrically arranged on both sides of the rolling line, wherein the push structure includes:

[0008] A pusher plate is disposed along the rolling line;

[0009] A movable frame includes two push rods and at least one connecting beam. The push rods extend in a direction perpendicular to the rolling line, one end of each push rod is connected to the push plate, and the connecting beam is parallel to the push plate and connects the two push rods.

[0010] The drive structure includes a hydraulic cylinder and a hydraulic support. The hydraulic cylinder is disposed between the two push rods and has a hydraulic section that can move in an axial direction parallel to the push rods. The hydraulic section is connected to the connecting beam and drives the movable frame to reciprocate along the axial direction of the push rods through the connecting beam. The hydraulic support has a rotating seat that can rotate about a horizontal line and a vertical line, and the hydraulic cylinder is hinged to the rotating seat.

[0011] In one specific embodiment, the hydraulic cylinder and the movable frame are located at the same height, and the hydraulic section and the push rod are located on the same horizontal plane and arranged parallel to each other.

[0012] In one specific embodiment, the pushing structure further includes:

[0013] A guide wheel support has a guide wheel assembly and a through cavity located inside the guide wheel support. The push rod is movably inserted through the through cavity in a direction perpendicular to the rolling line. The guide wheel assembly is rotatably mounted in the through cavity and rolls in contact with the outer peripheral surface of the push rod.

[0014] In one specific embodiment, the guide wheel assembly includes a support roller, a pressure roller, and side guide rollers.

[0015] The pressure roller is located on the top wall of the through cavity, and the pressure roller makes rolling contact with the top surface of the push rod.

[0016] The side guide wheel is disposed on the side wall of the through cavity, and the side guide wheel is in rolling contact with the side of the push rod.

[0017] The support roller is located on the bottom wall of the through cavity, and the support roller rolls in contact with the bottom surface of the push rod.

[0018] In one specific embodiment, there are multiple guide wheel supports, and each push rod passes through at least two guide wheel supports. The bottoms of two adjacent guide wheel supports along the axial direction of the push rod are connected by a bottom beam.

[0019] In one specific embodiment, the bottoms of two adjacent guide wheel supports along the direction of the rolling line are connected by a base, and the bottom of the hydraulic support is connected to the base.

[0020] In one specific embodiment, the pushing structure further includes a central beam, and the middle portions of two adjacent guide wheel supports along the direction of the rolling line can be connected through the central beam.

[0021] In one specific embodiment, the top wall of the guide wheel support is detachably connected to the side wall of the guide wheel support. When the top wall of the guide wheel support is disassembled, the push rod located in the through cavity can be moved vertically out to the outside of the guide wheel support through the top opening of the guide wheel support.

[0022] In one specific implementation,

[0023] There are multiple connecting beams, which are spaced apart between the two push rods along a direction perpendicular to the rolling line. At least one connecting beam is located close to the push plate, and at least one connecting beam is connected to the end of the push rod away from the push plate.

[0024] In one specific embodiment, the connecting beam and the push rod are connected by a key.

[0025] Compared with the prior art, the technical solution of this utility model has the following features and advantages:

[0026] The hydraulic pusher for a plate rolling mill provided by this utility model forms a box-shaped moving frame by connecting two push rods and at least one connecting beam. The hydraulic cylinder pushes the moving frame to open and close the push plates installed on the moving frame. Compared with the prior art, the moving frame has a simpler structure, better overall rigidity, and is easier to maintain. It also reduces the types and quantities of spare parts, further saving costs. At the same time, the box-shaped moving frame can cope with large off-center loads on the pusher, improving the off-center load resistance of the push rods.

[0027] The hydraulic pusher for plate rolling mills provided by this utility model enables the hydraulic cylinder to rotate around horizontal and vertical lines by setting a rotating seat on the hydraulic support. In other words, during the process of the hydraulic cylinder driving the moving frame to move and then pushing the push plate to achieve the pushing function, the eccentric load on the moving frame and the hydraulic cylinder in each direction can be decomposed to the horizontal and vertical planes, so that the hydraulic cylinder can cope with the eccentric load in each direction and improve the anti-eccentric load capacity of the hydraulic cylinder. Attached Figure Description

[0028] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of this invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely illustrative to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. Those skilled in the art, under the guidance of this invention, can select various possible shapes and proportions to implement this invention according to specific circumstances.

[0029] Figure 1 This is a front view of the hydraulic pusher of the plate rolling mill according to this utility model;

[0030] Figure 2 This is a top view of the hydraulic pusher of the plate rolling mill according to this utility model;

[0031] Figure 3 This is a first cross-sectional view of the hydraulic pusher of the plate rolling mill of this utility model;

[0032] Figure 4 This is a second cross-sectional view of the hydraulic pusher of the plate rolling mill of this utility model;

[0033] Figure 5 This is the third cross-sectional view of the hydraulic pusher of the plate rolling mill of this utility model.

[0034] Explanation of icon numbers:

[0035] 100. Promote the structure;

[0036] 110. Push plate;

[0037] 120. Mobile frame;

[0038] 121. Push rod; 122. Connecting beam;

[0039] 130. Drive structure;

[0040] 131. Hydraulic cylinder; 1311. Hydraulic section;

[0041] 132. Hydraulic support; 1321. Rotary seat;

[0042] 140. Guide wheel support;

[0043] 141. Guide wheel assembly; 1411. Support roller; 1412. Pressure roller; 1413. Side guide roller;

[0044] 142. Through cavity; 1421. Bottom wall; 1422. Top wall; 1423. Side wall;

[0045] 150. Bottom beam;

[0046] 160. Base;

[0047] 170. Central beam;

[0048] A. Rolling line;

[0049] B. Axial direction of the push rod. Detailed Implementation

[0050] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0051] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0052] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0053] like Figure 1 , Figure 2 and Figure 4 As shown, this utility model provides a hydraulic pusher for a plate rolling mill, including two push structures 100 symmetrically arranged on both sides of the rolling line A. Each push structure 100 includes:

[0054] Push plate 110 is set along rolling line A;

[0055] The movable frame 120 includes two push rods 121 and at least one connecting beam 122. The push rods 121 extend in a direction perpendicular to the rolling line A. One end of the push rod 121 is connected to the push plate 110. The connecting beam 122 is parallel to the push plate 110 and connects the two push rods 121.

[0056] The drive structure 130 has a hydraulic cylinder 131 and a hydraulic support 132. The hydraulic cylinder 131 is disposed between two push rods 121. The hydraulic cylinder 131 has a hydraulic section 1311 that can move along the axial direction B parallel to the push rod 121. The hydraulic section 1311 is connected to the connecting beam 122 and drives the moving frame 120 to reciprocate along the axial direction B of the push rod through the connecting beam 122. The hydraulic support 132 has a rotating seat 1321 that can rotate around a horizontal line and a vertical line. The hydraulic cylinder 131 is hinged to the rotating seat 1321.

[0057] The hydraulic pusher for a plate rolling mill provided by this utility model connects two push rods 121 and at least one connecting beam 122 to form a box-shaped movable frame 120. The hydraulic cylinder 131 pushes the movable frame 120 to open and close the push plate 110 mounted on the movable frame 120. Compared with the prior art, the movable frame 120 has a simpler structure, better overall rigidity, and is easier to maintain. It also reduces the types and quantities of spare parts, further saving costs. At the same time, the box-shaped movable frame 120 can cope with large off-center loads on the pusher, improving the off-center load resistance of the push rods 121.

[0058] The hydraulic pusher for plate rolling mills provided by this utility model, by setting a rotating seat 1321 on the hydraulic support 132, also enables the hydraulic cylinder 131 to rotate around the horizontal and vertical lines. That is, in the process of driving the moving frame 120 to move and then pushing the push plate 110 to achieve the pushing operation, the eccentric load on the moving frame 120 and the hydraulic cylinder 131 in all directions can be decomposed to the horizontal and vertical planes, so that the hydraulic cylinder 131 can cope with the eccentric load in all directions and improve the anti-eccentric load capacity of the hydraulic cylinder 131.

[0059] Specifically, in this embodiment, the push plate 110 is used to push the rolled piece on the rolling line A. The push plate 110 is arranged along the direction of the rolling line A. The movable frame 120 is used to install the push plate 110. The movable frame 120 is arranged in a horizontal state. The movable frame 120 includes two push rods 121 and at least one connecting beam 122. One end of the push rod 121 is connected to the push plate 110, and the other end of the push rod 121 extends in a direction perpendicular to the rolling line A and away from the rolling line A. There is a gap between the two push rods 121. The connecting beam 122 is parallel to the push plate 110 and is arranged between the two push rods 121. The two ends of the connecting beam 122 are respectively connected to the inner side of the two push rods 121.

[0060] In this embodiment, the hydraulic cylinder 131 and hydraulic support 132 of the drive structure 130 are both arranged between the two push rods 121. The hydraulic section 1311 of the hydraulic cylinder 131 is connected to the side of the connecting beam 122 away from the connecting rolling line A. The hydraulic section 1311 of the hydraulic cylinder 131 drives the moving frame 120 to reciprocate along the axial direction B of the push rod 121 through the connecting beam 122, so as to push the moving frames 120 on both sides of the rolling line A to open and close, thereby realizing the centering function for the rolled workpiece.

[0061] In this embodiment, a rotating seat 1321 capable of rotating around a horizontal line and a vertical line is formed on the hydraulic support 132. In this embodiment, the rotating seat 1321 is a ball joint connection structure to achieve rotation around a horizontal line and a vertical line. In other embodiments, the rotating seat 1321 can also be a cross pin or other structure to achieve rotation around a horizontal line and a vertical line. The specific structure of the rotating seat 1321 is not limited. The hydraulic cylinder 131 is hinged to the rotating seat 1321 so that both the hydraulic cylinder 131 and the hydraulic section 1311 can rotate around a horizontal line and a vertical line.

[0062] like Figure 1 , Figure 2 and Figure 4 As shown, in one specific embodiment, the hydraulic cylinder 131 and the moving frame 120 are located at the same height, and the hydraulic section 1311 and the push rod 121 are located on the same horizontal plane and are arranged in parallel.

[0063] The hydraulic pusher for a plate rolling mill provided by this utility model eliminates the vertical eccentric load between the hydraulic cylinder 131 and the pusher 121 by setting the hydraulic cylinder 131 and its hydraulic section 1311 on the same horizontal plane as the pusher 121. This allows the hydraulic section 1311 of the hydraulic cylinder 131 to apply a force parallel to the axis of the pusher 121 to the moving frame 120. At the same time, when encountering eccentric loads applied to the push plate 110 by the pusher, the fact that the hydraulic section 1311 and the pusher 121 are on the same horizontal plane also eliminates the inherent vertical eccentric load caused by the hydraulic section 1311 and the pusher 121 not being on the same horizontal plane.

[0064] Specifically in this embodiment, the hydraulic cylinder 131 is mounted on the rotating seat 1321. The rotating seat 1321 and the moving frame 120 are set at the same height, and the hydraulic cylinder 131 connected to the rotating seat 1321 is also set at the same height as the moving frame 120. The hydraulic section 1311 of the hydraulic cylinder 131 extends out from the hydraulic cylinder 131 and is parallel to the push rod 121.

[0065] like Figures 3 to 5 As shown, in one specific embodiment, the actuating structure 100 further includes:

[0066] The guide wheel support 140 has a guide wheel assembly 141 and a through cavity 142 located inside the guide wheel support 140. The push rod 121 is movably inserted through the through cavity 142 in a direction perpendicular to the rolling line A. The guide wheel assembly 141 is rotatably installed in the through cavity 142 and rolls in contact with the outer peripheral surface of the push rod 121.

[0067] The hydraulic pusher for plate rolling mill provided by this utility model can provide guidance for the movement of the moving frame 120 by setting guide wheel support 140 and guide wheel assembly 141. The guide wheel assembly 141 is rotatably installed in the through cavity 142 and rolls in contact with the outer peripheral surface of the push rod 121, providing directional guidance and support for the moving frame 120 to ensure the smooth operation of the moving frame 120.

[0068] Specifically, in this embodiment, each push rod 121 is provided with at least one guide wheel support 140. The guide wheel support 140 is a box-shaped body with a through cavity 142. The guide wheel support 140 has openings on opposite sides along the axial direction B of the push rod 121. The openings are connected to the through cavity 142. The push rod 121 can be movably inserted into the two openings and the through cavity 142 in a direction perpendicular to the rolling line A. The guide wheel assembly 141 rolls in contact with the outer peripheral surface of the push rod 121 to provide support and guidance for the push rod 121.

[0069] like Figures 3 to 5 As shown, in one specific embodiment, the guide wheel assembly 141 includes a support wheel 1411, a pressure wheel 1412, and a side guide wheel 1413. The pressure wheel 1412 is disposed on the top wall 1422 of the through cavity 142 and rolls in contact with the top surface of the push rod 121. The side guide wheel 1413 is disposed on the side wall 1423 of the through cavity 142 and rolls in contact with the side surface of the push rod 121. The support wheel 1411 is disposed on the bottom wall 1421 of the through cavity 142 and rolls in contact with the bottom surface of the push rod 121.

[0070] The hydraulic pusher for the plate rolling mill provided by this utility model achieves different functions by setting wheel structures in different positions to roll into contact with the outer peripheral surface of the push rod 121, but together they enable the push rod 121 to move smoothly.

[0071] Specifically, in this embodiment, the support roller 1411, pressure roller 1412, and side guide roller 1413 are all installed inside the through cavity 142. The support roller 1411 is installed on the bottom plate of the through cavity 142, the side guide roller 1413 is installed on the inner wall 1423 of the through cavity 142, and the pressure roller 1412 is installed on the top wall 1422 of the through cavity 142. The pressure roller 1412, support roller 1411, and side guide roller 1413 all have rolling contact with the push rod 121. In an optional example, the push rod 121 is a square rod, the support roller 1411 has rolling contact with the bottom surface of the push rod 121, and the side guide roller 1413 has rolling contact with the bottom surface of the push rod 121. The outer surface of the push rod 121 has rolling contact, and the pressure roller 1412 has rolling contact with the top surface of the push rod 121. During the process of the hydraulic section 1311 pushing the moving frame 120 to move back and forth, the support roller 1411 is used to support the moving frame 120, the side guide roller 1413 provides horizontal guidance for the moving frame 120, the pressure roller 1412 provides vertical guidance for the moving frame 120 and can effectively prevent the moving frame 120 from tipping over in the vertical direction, and the guide wheel support 140 provides guidance for the moving frame 120 in all directions (up, down, left, and right) to ensure the smooth operation of the moving frame 120.

[0072] like Figure 1 and Figure 2 As shown, in one specific embodiment, there are multiple guide wheel supports 140, and each push rod 121 passes through at least two guide wheel supports 140. The bottoms of two adjacent guide wheel supports 140 along the axial direction B of the push rod are connected by a bottom beam 150.

[0073] The hydraulic pusher for a plate rolling mill provided by this utility model connects the bottoms of two adjacent guide wheel supports 140 along the axial direction B of the push rod 121 via a bottom beam 150. This ensures that the push rod 121 is guided in the same direction by the two guide wheel supports 140, preventing deviation in the guiding direction of the two guide wheel supports 140 under continuous external eccentric load, thus avoiding structural displacement due to eccentric load vibration. This also makes the overall rigidity of the two adjacent guide wheel supports 140 along the axial direction B of the push rod 121 stronger, enabling it to cope with larger eccentric loads and improving its resistance to eccentric loads.

[0074] Specifically, in this embodiment, the bottom beam 150 extends along the axial direction B of the push rod 121, and the two ends of the bottom beam 150 are respectively connected to the outer side wall 1423 of the bottom of two adjacent guide wheel supports 140 along the axial direction B of the push rod 121.

[0075] like Figure 1 and Figure 2 As shown, in one specific embodiment, the bottoms of two adjacent guide wheel supports 140 along the direction of rolling line A are connected by a base 160, and the bottom of the hydraulic support 132 is connected to the base 160.

[0076] The hydraulic pusher for a plate rolling mill provided by this utility model connects all the guide wheel supports 140 into an integral frame. A base 160 and a bottom beam 150 are respectively provided along the direction of the rolling line A and perpendicular to the rolling line A, improving the overall structural stability. Simultaneously, the bottom of the hydraulic support 132 is also connected to the base 160, making the hydraulic support 132 and the guide wheel supports 140 a whole, improving the resistance to eccentric loads and making the hydraulic cylinder 131 more firmly fixed, thus ensuring the normal operation of the hydraulic cylinder 131. Furthermore, the bottoms of two adjacent guide wheel supports 140 along the direction perpendicular to the rolling line A are connected by the bottom beam 150, so that the two push rods 121 can maintain the same direction under the guidance of the two guide wheel supports 140, avoiding the problem of deviation in the guidance direction of the two adjacent guide wheel supports 140 along the direction perpendicular to the rolling line A under continuous external eccentric load, i.e., structural displacement due to eccentric load vibration.

[0077] like Figures 2 to 5 As shown, in one specific embodiment, the push structure 100 also includes a middle beam 170, and the middle parts of two adjacent guide wheel supports 140 along the direction of the rolling line A can also be connected through the middle beam 170.

[0078] The hydraulic pusher for plate rolling mills provided by this utility model further adds a middle beam 170 between two adjacent guide wheel supports 140 along the direction of rolling line A. Since the pusher plate 110 is often subjected to eccentric loads along the direction of rolling line A, the use of the middle beam 170 can further improve the overall rigidity of the guide wheel supports 140 and avoid the problem that the structure of the two guide wheel supports 140 will shift due to eccentric load vibration when subjected to a large impact.

[0079] Specifically, in this embodiment, the guide wheel support 140 is a box-shaped structure with a through cavity 142. The middle beam 170 is disposed between two adjacent guide wheel supports 140 along the direction of the rolling line A. One end of the middle beam 170 is connected to the middle outer wall 1423 of the guide wheel support 140, and the other end of the middle beam 170, the push rod 121, extends along the direction of the rolling line A and is connected to the middle outer wall 1423 of another guide wheel support 140.

[0080] like Figure 3 and Figure 5 As shown, in one specific embodiment, the top wall 1422 of the guide wheel support 140 is detachably connected to the side wall 1423 of the guide wheel support 140. When the top wall 1422 of the guide wheel support 140 is disassembled, the push rod 121 located in the through cavity can be moved out to the outside of the guide wheel support 140 in a vertical direction through the top opening of the guide wheel support 140.

[0081] The hydraulic pusher for plate rolling mill provided by this utility model changes the top wall 1422 and side wall 1423 of the guide wheel support 140 to be detachably connected, making the dismantling of the moving frame 120 more convenient and quick. After removing the top wall 1422 of the guide wheel support 140, the moving frame 120 can be lifted out as a whole by a crane.

[0082] In this embodiment, the guide wheel bracket is welded from thick steel plates. The side walls 1423 of the through cavity 142 of the guide wheel bracket are two opposite side walls 1423 along the direction of the rolling line A. The two side walls 1423, the bottom wall 1421, and the top wall 1422 together form the through cavity and two openings formed in the direction perpendicular to the rolling line A. In this embodiment, the two side walls 1423 and the top wall 1422 are detachably connected by bolts so as to facilitate disassembly and replacement of the moving frame 120 at any time.

[0083] like Figure 1 and Figure 2 As shown, in one specific embodiment, there are multiple connecting beams 122. The multiple connecting beams 122 are connected at intervals between two push rods 121 along a direction perpendicular to the rolling line A. At least one connecting beam 122 is disposed close to the push plate 110, and at least one connecting beam 122 is connected to the end of the push rod 121 away from the push plate 110.

[0084] The hydraulic pusher for a plate rolling mill provided by this utility model, by setting multiple connecting beams 122, connects two push rods 121 and multiple connecting beams 122 together to form a box-shaped moving frame 120. At least one connecting beam 122 is set close to the push plate 110, and at least one connecting beam 122 is connected to the end of the push rod 121 away from the push plate 110. This also improves the overall anti-eccentric load capacity of the box-shaped moving frame 120, so that eccentric loads along both the direction perpendicular to the rolling line A and along the rolling line A can be structurally supported.

[0085] Specifically, in this embodiment, there are three connecting beams 122. One connecting beam 122 is located close to the push plate 110, another connecting beam 122 is connected to the end of the push rod 121 away from the push plate 110, and the remaining connecting beam 122 is connected to the middle of the push rod 121. In other embodiments, the number of connecting beams 122 is not specifically limited.

[0086] like Figure 1 and Figure 2 As shown, in one specific embodiment, the connecting beam 122 and the push rod 121 are connected by a key.

[0087] The hydraulic pusher for plate rolling mill provided by this utility model changes the connection method between the connecting beam 122 and the push rod 121 from a stop to a key connection, which improves the connection stability between the connecting beam 122 and the push rod 121 and improves the overall rigidity of the moving frame 120.

[0088] Specifically, in this embodiment, the working process of this utility model includes:

[0089] The hydraulic pusher for the plate rolling mill provided by this utility model, when it is necessary to center the rolled piece on the rolling line A, simultaneously activates the hydraulic cylinders 131 of the two push structures 100. The hydraulic section 1311 of the hydraulic cylinder 131 extends and pushes the connecting beam 122 connected to it to move toward the rolling line A. The connecting beam 122 drives the entire moving frame 120 and the push plate 110 installed on the moving frame 120 to move toward the rolling line A. The guide wheel support 140 provides support for the moving frame 120 and ensures the smooth operation of the moving frame 120. In this way, the two push plates 110 located on both sides of the rolled piece close, and the rolled piece is centered under the pushing force of the two push plates 110.

[0090] After the workpiece is aligned, the hydraulic sections 1311 of the two hydraulic cylinders 131 retract simultaneously and drive the moving frame 120 away from the rolling line A. The two push plates 110 located on both sides of the workpiece open, and the workpiece enters the next production process.

[0091] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A hydraulic push bench for a plate rolling mill comprising two push structures symmetrically arranged on both sides of the rolling line, characterized in that, The pushing structure comprises: a pushing plate arranged along the rolling line; a moving frame comprising two pushing rods arranged in a direction perpendicular to the rolling line, one end of the pushing rod being connected to the pushing plate, and at least one connecting beam parallel to the pushing plate and connected between the two pushing rods; a driving structure having a hydraulic cylinder and a hydraulic support, the hydraulic cylinder being arranged between the two pushing rods, the hydraulic cylinder having a hydraulic section movable in an axial direction parallel to the pushing rod, the hydraulic section being connected to the connecting beam and driving the moving frame to reciprocate along the axial direction of the pushing rod through the connecting beam, and the hydraulic support having a rotating seat rotatable around a horizontal line and a vertical line, the hydraulic cylinder being hinged to the rotating seat.

2. The hydraulic pushing bed of the plate rolling machine according to claim 1, wherein: the hydraulic cylinder is arranged at the same height as the moving frame, and the hydraulic section is arranged in the same horizontal plane as the pushing rod.

3. The hydraulic push bench of a plate rolling mill according to claim 2, characterized in that, The pushing structure further comprises: a guide wheel support having a guide wheel set and a through cavity inside the guide wheel support, the pushing rod being movably arranged in the through cavity in a direction perpendicular to the rolling line, and the guide wheel set being rotatably arranged in the through cavity and rolling in contact with the outer circumferential surface of the pushing rod.

4. The hydraulic pushing bed of the plate rolling machine according to claim 3, wherein: the guide wheel set comprises a supporting wheel, a pressing wheel, and a side guide wheel, the pressing wheel is arranged on the top wall of the through cavity and rolling in contact with the top surface of the pushing rod, the side guide wheel is arranged on the side wall of the through cavity and rolling in contact with the side surface of the pushing rod, the supporting wheel is arranged on the bottom wall of the through cavity and rolling in contact with the bottom surface of the pushing rod.

5. The hydraulic push bench of a plate rolling mill according to claim 3, characterized in that, There are multiple guide wheel supports, each pushing rod is arranged in at least two guide wheel supports, and the bottoms of two adjacent guide wheel supports along the axial direction of the pushing rod are connected through a bottom beam.

6. The hydraulic push bench of a plate rolling mill according to claim 5, characterized in that, The bottoms of two adjacent guide wheel supports along the direction of the rolling line are connected through a base, and the bottom of the hydraulic support is connected to the base.

7. The hydraulic pushing bed of the plate rolling machine according to claim 6, wherein: the pushing structure further comprises a middle beam, and the middle portions of two adjacent guide wheel supports along the direction of the rolling line can also be connected through the middle beam.

8. The hydraulic pushing bed of the plate rolling machine according to claim 4, wherein: the top wall of the guide wheel support is detachably connected to the side wall of the guide wheel support, and when the top wall of the guide wheel support is detached, the pushing rod arranged in the through cavity can be moved out to the outside of the guide wheel support in a vertical direction through the top opening of the guide wheel support.

9. The hydraulic pushing bed of the plate rolling machine according to claim 1, wherein: there are multiple connecting beams, the multiple connecting beams are arranged between the two pushing rods in a direction perpendicular to the rolling line, at least one connecting beam is arranged close to the pushing plate, and at least one connecting beam is connected to one end of the pushing rod away from the pushing plate.

10. The plate mill hydraulic push bench according to claim 1, characterized in that, The connecting beam is connected with the push rod through a key. The connecting beam is connected with the push rod through a key.

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