A quick replacement device for a plate straightening machine roll gap adjusting hydraulic cylinder

Abstract

The utility model relates to a kind of plate straightening machine roll gap adjusting hydraulic cylinder quick replacement device, belong to metallurgical industry plate straightening machine maintenance equipment technical field.The technical scheme is: including bottom plate (1), H-shaped steel (3), arc plate (6), tight rope device (7), nylon rope (8) and counterweight (11), H-shaped steel (3) is vertically fixed on bottom plate (1), H-shaped steel (3) upper end is equipped with crossbeam, and crossbeam is equipped with counterweight (11);Two arc plates (6) are respectively fixed on H-shaped steel (3), and two arc plates (6) are connected together by tight rope device (7) and nylon rope (8).The utility model has the beneficial effects that: avoid repeated hoisting and transporting cumbersome operation and hydraulic cylinder precision spare damage, realize the stable hoisting of hydraulic cylinder.It has the advantages of simple structure, simple operation, safe and efficient, etc., can effectively solve the replacement problem of plate straightening machine roll gap adjusting hydraulic cylinder.

Description

Technical Field

[0001] This utility model relates to a quick replacement device for the hydraulic cylinder for adjusting the roller gap of a plate straightening machine, belonging to the technical field of plate straightening machine maintenance equipment in the metallurgical industry. Background Technology

[0002] The roller gap adjustment hydraulic cylinder is the actuator of the precision adjustment system for the roller gap of a sheet metal straightener. It can precisely control the roller gap of the straightener through signal input and sensor detection signal feedback. Chinese Patent CN 114951345 A, entitled "Hydraulic System for Roller Gap Adjustment of a Straightener," discloses a hydraulic system for adjusting the roller gap of a straightener. Its actuator, namely four roller gap adjustment hydraulic cylinders, works in conjunction to achieve longitudinal tilting of the roller gap, making the roller gap gradually increase along the running direction of the sheet metal, which better conforms to the straightening deformation characteristics of the sheet metal in the multi-roller straightening process. At the same time, it can also achieve lateral tilting of the roller gap along the width direction of the sheet metal to eliminate asymmetric defects on one side of the sheet metal. It has the advantages of fast response speed and high control accuracy, and is widely used in the pressing system of sheet metal straighteners.

[0003] like Figure 10-11 As shown, the roll gap adjusting hydraulic cylinder 001 mainly consists of a cylinder body 0011, a hollow piston rod 0012, a concave pad 0013, a spherical guide column 0014, and a sensor installed inside the cylinder body 0011. The entire assembly is installed directly below the straightening machine frame 002. During frequent use, the roll gap adjusting hydraulic cylinder 001 will experience wear and oil leaks, requiring periodic replacement. Because this hydraulic cylinder is installed directly below the frame 002, it cannot be directly hoisted; it typically requires repeated hoisting and transport using a chain hoist and overhead crane. Due to the large size, heavy weight, and complex structure of the hydraulic cylinder, and the fact that its spherical guide column 0014 is movable and prone to detachment during cylinder body 0011 hoisting, and that precision components such as the sensor are easily damaged, requiring stable hoisting, and the presence of multiple intersecting hydraulic pipes around the frame 002 above it, replacing the hydraulic cylinder is difficult, time-consuming, and poses significant safety hazards. Therefore, a new technical solution is urgently needed to address these problems. Utility Model Content

[0004] The purpose of this invention is to provide a quick replacement device for the hydraulic cylinder for adjusting the roll gap of a plate straightening machine, which can quickly lift and replace the hydraulic cylinder for adjusting the roll gap, thus solving the problems existing in the background art.

[0005] The technical solution of this utility model is: A quick-change device for the hydraulic cylinder for adjusting the roll gap of a plate straightening machine includes a base plate, an H-beam, an arc plate, a rope tensioner, a nylon rope, and a counterweight. The H-beam is vertically fixed on the base plate, and a crossbeam is provided at the upper end of the H-beam, with a counterweight on the crossbeam. Two arc plates are fixed on the H-beam respectively, and the two arc plates are connected together by the rope tensioner and the nylon rope.

[0006] The two arc-shaped plates are respectively fixed to the H-beams by rectangular upright plates. The rope tensioner is fixed to one of the arc-shaped plates, and the other arc-shaped plate is provided with a cylinder that cooperates with the nylon rope.

[0007] The curvature of the arc plate matches the outer circle of the cylinder of the roller gap adjusting hydraulic cylinder.

[0008] The rope tensioner includes a bracket, a drum, and a locking pin. The bracket is fixed on an arc-shaped plate, and the drum is mounted on the bracket. The drum is equipped with an assist rod and a positioning disc. The drum and the positioning disc are locked together by the locking pin.

[0009] The positioning disc is provided with a rectangular through groove that cooperates with the nylon rope.

[0010] The nylon rope is equipped with a hook that engages with a cylinder on the curved plate.

[0011] The base plate is a rectangular steel plate, and support blocks that cooperate with the roller gap adjustment hydraulic cylinder are provided on both sides of the rectangular steel plate.

[0012] The upper crossbeam of the H-beam is composed of an upper crossbeam bottom plate and an upper crossbeam vertical plate.

[0013] The beneficial effects of this invention are: the device can transfer the hoisting position of the roller gap adjusting hydraulic cylinder to above the vertical line of the hydraulic cylinder's center of gravity, moving it from directly below the machine frame to directly above the machine frame, avoiding cumbersome repeated hoisting and handling operations, preventing damage to the precision spare parts of the hydraulic cylinder, and achieving stable hoisting of the hydraulic cylinder. It has advantages such as simple structure, easy operation, safety, and high efficiency, and can effectively solve the problem of replacing the roller gap adjusting hydraulic cylinder in a sheet metal straightening machine. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a structural schematic diagram of the base plate; Figure 3 This is a partially enlarged schematic diagram of the present invention excluding the rope tensioner and nylon rope; Figure 4 A schematic diagram of the assembly of the rope tensioner; Figure 5 This is a schematic diagram of the rope tensioner bracket. Figure 6 A schematic diagram of the hydraulic cylinder for adjusting the gap between lifting rollers according to this utility model; Figure 7 For the application of this utility model Figure 1 ; Figure 8 This is the second application of the present utility model; Figure 9This is the third application of the present utility model; Figure 10 This is a schematic diagram of the structure of the hydraulic cylinder for adjusting the roll gap in the background art; Figure 11 This is a schematic diagram of the installation position of the roller gap adjusting hydraulic cylinder inside the straightening machine in the background art; In the diagram: 001 - Roll gap adjustment hydraulic cylinder; 002 - Frame; 003 - Upper crossbeam; 0011-Cylinder block, 0012-Hollow piston rod, 0013-Concave pad, 0014-Spherical guide post, 00141-Lower outer circle, 00142-Upper outer circle, 0015-Fixing plate; 1-Base plate; 2-Support block; 3-H-beam; 4-Rectangular upright plate; 5-Reinforcing rib; 6-Arc-shaped plate; 7-Tightening device; 8-Nylon rope; 9-Upper crossbeam base plate; 10-Upper crossbeam upright plate; 11-Counterweight block; 12-Lifting pin; 1001 - Circular groove, 1002 - Rectangular groove; 601 - Arc, 602 - Circular through hole, 603 - Fixed cylinder; 701-Bracket, 702-Spindle, 703-Locking pin; 7011-Through hole, 7012-First positioning round hole, 7021-Thin-walled round tube, 7022-Assist rod, 7023-Positioning disc, 7024-Second positioning round hole, 7025-Rectangular through slot; Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and examples.

[0016] See attached document Figure 1-11 A quick-change device for the hydraulic cylinder for adjusting the roll gap of a plate straightening machine includes a base plate 1, an H-beam 3, an arc plate 6, a rope tensioner 7, a nylon rope 8, and a counterweight 11. The H-beam 3 is vertically fixed on the base plate 1, and a crossbeam is provided at the upper end of the H-beam 3. The counterweight 11 is provided on the crossbeam. Two arc plates 6 are respectively fixed on the H-beam 3, and the two arc plates 6 are connected together by the rope tensioner 7 and the nylon rope 8.

[0017] In this embodiment, as Figure 1 As shown, the device mainly includes a base plate 1, a support block 2, an H-beam 3, a rectangular vertical plate 4, reinforcing ribs 5, an arc-shaped plate 6, a rope tensioner 7, a nylon rope 8, an upper crossbeam base plate 9, an upper crossbeam vertical plate 10, a counterweight block 11, and a lifting pin 12, etc., wherein: like Figure 2As shown, the base plate 1 is a rectangular steel plate, the length and width of which are greater than the outer diameter of the roll gap adjusting hydraulic cylinder 001. The front edge of the base plate is provided with a circular slot 1001 and a rectangular slot 1002 that are connected to each other. The diameter of the circular slot 1001 is greater than the diameter of the lower outer circle 00141 of the spherical guide post 0014 and smaller than the diameter of the upper outer circle 00142 of the spherical guide post 0014. The rectangular slot 1002 is larger than the outer dimensions of the fixing plate 0015 installed on the spherical guide post 0014. The base plate 1 can be used to support the spherical guide post 0014.

[0018] like Figure 3 As shown, the support block 2 is a rectangular parallelepiped structure located on both sides of the base plate 1. Its length is consistent with the length of the base plate 1, and its height is greater than the vertical distance between the bottom surface of the cylinder body 0011 of the roller gap adjusting hydraulic cylinder 001 and the bottom surface of the upper outer circle 00142 of the spherical guide column 0014. The support block 2 can support the cylinder body 0011 of the roller gap adjusting hydraulic cylinder 001.

[0019] The H-beam 3 is perpendicular to the base plate 1, and rectangular uprights 4 are installed on its lower two sides. The H-beam 3 is connected to the base plate 1 and the support block 2 by reinforcing ribs 5. The length of the H-beam 3 is greater than the distance from the lower part of the roll gap adjusting hydraulic cylinder 001 to the top of the frame 002.

[0020] The arc plate 6 is a steel plate with a circular arc 601 of a certain radius of curvature, the radius of which is consistent with the outer radius of the cylinder body 0011 of the roll gap adjusting hydraulic cylinder 001. Two arc plates 6 are symmetrically mounted on the rectangular vertical plate 4, maintaining a perpendicular relationship with it. The circular arcs 601 of the two arc plates 6 are concentric, and the perpendicular line from the center of their concentric circles coincides with the perpendicular line from the center of the circular groove 1001 of the base plate 1. The distance between the two arc plates 6 and the upper surface of the support block 2 is less than the height of the cylinder body 0011 of the roll gap adjusting hydraulic cylinder 001.

[0021] Two arc-shaped plates 6 are installed on a rectangular vertical plate 4, with a circular through hole 602 on one side and a fixed cylinder 603 on the other side.

[0022] like Figure 3 , Figure 4 , Figure 5 As shown, the rope tensioner 7 is installed on the arc-shaped plate 6, and it mainly consists of a bracket 701, a drum 702, and a locking pin 703. The bracket 701 is welded to the arc-shaped plate 6, and has a through hole 7011 on its upper part. The inner diameter of the through hole 7011 is consistent with the inner diameter of the circular through hole 602 of the arc-shaped plate 6. The perpendicular line through its center coincides with the perpendicular line through the center of the through hole 602 of the arc-shaped plate 6. Multiple first positioning circular holes 7012 are evenly distributed around the through hole 7011.

[0023] The overall structure of the drum 702 is a thin-walled circular tube 7201, the outer diameter of which is consistent with the inner diameter of the through hole 7011 of the support 701, and an assist rod 7022 is provided above it; a positioning disc 7023 is provided in the upper middle part of the drum 702, and multiple second positioning holes 7024 are evenly distributed around the positioning disc 7023. The second positioning holes 7024 and the first positioning holes 7012 are consistent in size and distribution; a rectangular through groove 7025 is provided below the positioning disc 7023.

[0024] The diameter of the pin shaft below the locking pin 703 is the same as that of the first positioning hole 7012 and the second positioning hole 7024, which is used to constrain the circumferential position of the drum 702.

[0025] The drum 702 is mounted on the bracket 701 and can be inserted into the through hole 602 on the arc plate 6. It rotates along the axis of the drum 702 and is positioned by the locking pin 703.

[0026] like Figure 1 , Figure 6 As shown, the nylon rope 8 has a certain width, with a hook 801 at one end for hanging on a fixed cylinder 603, and the other end for inserting into a rectangular slot 7025 of the drum 702. The nylon rope 8 can be positioned by a tensioner 7. The roller gap adjustment hydraulic cylinder 001 can be positioned horizontally by the cooperation of two arc-shaped plates 6 with the nylon rope 8 and the tensioner 7.

[0027] The bottom plate 9 of the upper crossbeam is a rectangular steel plate, which is perpendicular to the H-beam 3 and connected by stiffening plates; the upright plate 10 of the upper crossbeam is located on both sides above the bottom plate 9 of the upper crossbeam and is perpendicular to it; a counterweight 11 is provided at the end of the upright plate 10 away from the H-beam 3, and a pin hole is provided in the middle of the upright plate 10 and a lifting pin 12 is installed. Through the weight distribution of the counterweight 11, the lifting pin 12 is located directly above the center of gravity of the present invention, and the vertical line of the center of the lifting pin 12 coincides with the vertical line of the center of the arc of the two arc plates 6, so that the main body of the present invention can be lifted stably.

[0028] The roll gap adjusting hydraulic cylinder 001 can be installed on the support block 2 and constrained by the nylon rope 8 and the tensioner 7. The spherical guide column 0014 below it can be constrained by the circular slot 1001 of the base plate 1, so as to realize the vertical and horizontal constraints of the roll gap adjusting hydraulic cylinder 001. The lifting point can be changed from directly below the frame 002 to directly above the frame 002 by the H-beam 3 and the counterweight block 11, so as to avoid interference and achieve stable lifting.

[0029] See Figure 6-9 When using this utility model to replace the roller gap adjusting hydraulic cylinder 001, the specific operation is carried out according to the following detailed steps: 1. Remove the interfering platform, disconnect the oil pipes connected to the hydraulic cylinder, and disconnect the sensor plug above the hydraulic cylinder, as shown in ① in the figure; 2. Disassemble the hydraulic cylinder fixing bolts, see ② in the figure; 3. Lowering the upper crossbeam 003 causes the roller gap adjusting hydraulic cylinder 001 to descend to its lowest position, as shown in ③ in the figure; 4. Disassemble bolt 0015 on the fixing plate below the roller gap adjusting hydraulic cylinder 001, as shown in ④ in the figure; 5. The overhead crane hoists this utility model and positions it below the roller gap adjusting hydraulic cylinder 001, as shown in Figure ⑤. Nylon rope 8 is installed and constrained by rope tensioner 7, as shown in Figure ⑥. 6. The roller gap adjusting hydraulic cylinder 001 rises a certain distance with this utility model, causing the spherical guide column 0014 below it to separate from the upper crossbeam 003, as shown in Figure ⑦. It then moves a certain distance outward so that it is located outside the frame 002, as shown in Figures ⑧ and ⑨. The utility model is then lifted to hoist the roller gap adjusting hydraulic cylinder 001 out, as shown in Figure ⑨, completing the dismantling work.

[0030] 7. Install the roller gap adjusting hydraulic cylinder 001 in the same way, and the installation steps are the reverse of the removal steps.

Claims

1. A quick-change device for the hydraulic cylinder for adjusting the roll gap of a sheet metal straightening machine, characterized in that: It includes a base plate (1), an H-beam (3), an arc plate (6), a rope tensioner (7), a nylon rope (8), and a counterweight (11). The H-beam (3) is vertically fixed on the base plate (1). A crossbeam is provided at the upper end of the H-beam (3), and a counterweight (11) is provided on the crossbeam. Two arc plates (6) are fixed on the H-beam (3) respectively, and the two arc plates (6) are connected together by the rope tensioner (7) and the nylon rope (8).

2. The quick-change device for the hydraulic cylinder for adjusting the roll gap of a plate straightening machine according to claim 1, characterized in that: The two arc-shaped plates (6) are respectively fixed on the H-beam (3) by rectangular upright plates (4), and the rope tensioner (7) is fixed on one of the arc-shaped plates (6). The other arc-shaped plate (6) is provided with a cylinder (603) that cooperates with the nylon rope (8).

3. The quick-change device for the hydraulic cylinder for adjusting the roll gap of a plate straightening machine according to claim 2, characterized in that: The curvature of the arc plate (6) matches the outer circle of the cylinder of the roller gap adjusting hydraulic cylinder.

4. The quick-change device for the hydraulic cylinder for adjusting the roll gap of a plate straightening machine according to claim 2, characterized in that: The rope tensioner (7) includes a bracket (701), a drum (702) and a locking pin (703). The bracket (701) is fixed on the arc plate (6), and the drum (702) is mounted on the bracket (701). The drum (702) is provided with an assist rod (7022) and a positioning disc (7023). The drum (702) and the positioning disc (7023) are locked together by the locking pin (703).

5. The quick-change device for the hydraulic cylinder for adjusting the roll gap of a plate straightening machine according to claim 4, characterized in that: The positioning disc (7023) is provided with a rectangular through groove (7025) that cooperates with the nylon rope (8).

6. The quick-change device for the hydraulic cylinder for adjusting the roll gap of a plate straightening machine according to claim 2, characterized in that: The nylon rope (8) is provided with a hook (801) that engages with a cylinder (603) on the arc plate (6).

7. The quick-change device for the hydraulic cylinder for adjusting the roll gap of a plate straightening machine according to claim 1, characterized in that: The base plate (1) is a rectangular steel plate, and the two sides of the rectangular steel plate are respectively provided with support blocks (2) that cooperate with the roller gap adjustment hydraulic cylinder.

8. The quick-change device for the hydraulic cylinder for adjusting the roll gap of a plate straightening machine according to claim 1, characterized in that: The upper beam of the H-beam (3) is composed of an upper beam bottom plate (9) and an upper beam vertical plate (10).

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