A flexible anti-torsion device for the hydraulic cylinder of a sponge-state metal cutter crusher.

Abstract

This utility model discloses a flexible anti-torsion device for the hydraulic cylinder of a sponge-state metal cutter-type hydraulic crusher, mainly comprising a hydraulic cylinder, a pressure plate, a disc spring assembly, a ball head, and a ball cup. This utility model's technical solution realizes the relative offset degree of freedom between the main drive hydraulic cylinder and the cutter slider of the cutter-type hydraulic crusher. It can effectively cope with the deformation of the machine body and the offset of structural components caused by strong eccentric loading of the cutter-type hydraulic crusher, and prevent the piston rod, connecting flange, and bolts of the main drive hydraulic cylinder connected to the cutter slider from suffering eccentric torque, thereby improving the stress state of the main drive hydraulic cylinder, preventing damage to connecting structural components, and extending the safe service life of the equipment.

Description

Technical Field

[0001] This utility model relates to a flexible anti-torsion device for the hydraulic cylinder of a hydraulic press, and more particularly to a flexible anti-torsion device for the hydraulic cylinder of a sponge-state metal cutter crushing hydraulic press. Technical Background

[0002] Cutting and crushing spongy metal is a heavy-duty, high-side-load process for hydraulic presses. Under the torque caused by the off-side load, the hydraulic cylinder, which drives the cutter, is prone to loosening, deformation, or even damage and failure of the connection mechanism, which not only affects production efficiency but also poses safety hazards. Utility Model Content

[0003] The purpose of this utility model is to provide a flexible anti-torsion device for the hydraulic cylinder of a sponge-state metal cutting crusher. Under the strong off-center load condition of sponge-state metal cutting and crushing, the hydraulic cylinder connection mechanism is in good stress state and is not affected by the deformation of the hydraulic press body or the displacement of structural components, thus ensuring the reliable service life of the hydraulic cylinder.

[0004] The technical solution of this utility model is as follows: The main components include a hydraulic cylinder, a pressure plate, a disc spring assembly, a ball head, and a ball cup. Bolts pass through the pressure plate, disc spring assembly, and connecting flange from top to bottom, and are screwed into threaded holes on the upper surface of the cutter slider. A countersunk hole is opened on the lower surface of the pressure plate, and the disc spring assembly is fitted into the countersunk hole of the pressure plate. The gap between the lower end face of the pressure plate and the upper surface of the connecting flange is the maximum reserved compression amount of the disc spring assembly. The pressure plate can keep the disc spring assembly stable and prevent the disc spring assembly from failing due to overpressure. The ball head is fixed in the center to the lower surface of the hydraulic cylinder piston rod, and the ball cup is fixed to the upper surface of the cutter slider. The ball head and the ball cup are spherically fitted. After the hydraulic cylinder flexible anti-torsion device is assembled, the pre-compression force of the disc spring assembly is greater than the weight of the moving assembly including the hydraulic cylinder piston rod, bolts, connecting flange, pressure plate, disc spring assembly, ball head, ball cup, and cutter slider. The hydraulic cylinder piston rod, ball head, ball cup, and cutter slider are in a pre-tight connection state, and all contact surfaces always remain in contact and do not separate.

[0005] Compared with the prior art, the beneficial effects of this utility model are as follows: the connection between the main drive hydraulic cylinder and the cutter slider of the sponge-state metal cutter crusher has a local deflection degree of freedom; the connecting structure will not be subjected to abnormal torque when the hydraulic press body deforms or the structure shifts; the hydraulic cylinder connection mechanism has a good stress state, low failure rate and long service life under strong off-center load conditions. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of the flexible anti-torsion device of the hydraulic cylinder of the sponge-state metal cutting crusher hydraulic press of this utility model.

[0007] Figure 2This is a schematic diagram of the flexible anti-torsion device of this utility model when the hydraulic cylinder and the cutter slider are twisted.

[0008] Figure 1 In the middle: 1-hydraulic cylinder, 2-pressure plate, 3-disc spring assembly, 4-ball head, 5-ball cup, 6-slider, 101-hydraulic cylinder piston rod, 102-bolt, 103-connecting flange.

[0009] Figure 2 In the middle: 2-pressing plate, 3-disc spring assembly, 4-ball head, 5-ball cup, 6-slider, 101-hydraulic cylinder piston rod, 102-bolt, 103-connecting flange. Detailed Implementation

[0010] The present invention will be further described below with reference to the accompanying drawings.

[0011] See Figure 1 This utility model mainly includes a hydraulic cylinder 1, a pressure plate 2, a disc spring assembly 3, a ball head 4, and a ball cup 5; bolts 102 pass through the pressure plate 2, the disc spring assembly 3, and the connecting flange 103 from top to bottom, and the bolts 102 are screwed into the threaded holes on the upper surface of the cutter slider 6; a countersunk hole is opened on the lower surface of the pressure plate 2, and the disc spring assembly 3 is fitted into the countersunk hole of the pressure plate 2. The gap between the lower end face of the pressure plate 2 and the upper surface of the connecting flange 103 is the maximum reserved compression amount of the disc spring assembly 3. The pressure plate 2 can keep the disc spring assembly 3 stable and prevent the disc spring assembly 3 from failing due to overpressure; the ball head 4 is fixed in the center. On the lower plane of the hydraulic cylinder piston rod 101, the ball cup 5 is fixed to the upper plane of the cutter slider 6, and the ball head 4 and the ball cup 5 are in spherical fit. After the hydraulic cylinder flexible anti-torsion device is assembled, the pre-compression force of the disc spring group 3 is greater than the weight of the moving assembly including the hydraulic cylinder piston rod 101, bolt 102, connecting flange 103, pressure plate 2, disc spring group 3, ball head 4, ball cup 5 and cutter slider 6. The hydraulic cylinder piston rod 101, ball head 4, ball cup 5 and cutter slider 6 are in a pre-tight connection state, and all contact surfaces always remain in contact and do not separate.

[0012] See Figure 2 The hydraulic cylinder piston rod 101 and the cutter slider 6 deflected at a certain angle. Specifically, the assembly consisting of the hydraulic cylinder piston rod 101, connecting flange 103, and ball head 4 and the assembly consisting of bolt 102, pressure plate 2, ball cup 5, and cutter slider 6 shifted along the mating spherical surface of ball head 4 and ball cup 5. The bolt 102 and connecting flange 103 did not come into contact. Therefore, the hydraulic cylinder piston rod 101 and connecting flange 103 were not subjected to rigid torsional force. After the disc spring group 3 on one side was compressed, the compression spring force increased, while the disc spring group 3 on the other side loosened and released part of the pre-compression spring force. The total compression spring force provided by all disc spring groups 3 can still maintain the pre-tight connection state, and the contact surfaces remain in contact without separation.

Claims

1. A flexible anti-torsion device for the hydraulic cylinder of a sponge-state metal cutter-type crusher, characterized in that: The main components include a hydraulic cylinder (1), a pressure plate (2), a disc spring assembly (3), a ball head (4), and a ball cup (5); bolts (102) pass through the pressure plate (2), the disc spring assembly (3), and the connecting flange (103) from top to bottom, and the bolts (102) are screwed into the threaded holes on the upper surface of the cutter slider (6); a countersunk hole is opened on the lower surface of the pressure plate (2), and the disc spring assembly (3) is fitted into the countersunk hole of the pressure plate (2). The gap between the lower end face of the pressure plate (2) and the upper surface of the connecting flange (103) is the maximum reserved compression amount of the disc spring assembly (3). The pressure plate (2) can keep the disc spring assembly (3) stable and prevent the disc spring assembly (3) from over-pressure failure; the ball head (4) is fixed in the center. On the lower plane of the hydraulic cylinder piston rod (101), the ball cup (5) is fixed on the upper plane of the cutter slider (6), and the ball head (4) and the ball cup (5) are spherically fitted. After the hydraulic cylinder flexible anti-torsion device is assembled, the pre-compression force of the disc spring assembly (3) is greater than the weight of the moving assembly including the hydraulic cylinder piston rod (101), bolt (102), connecting flange (103), pressure plate (2), disc spring assembly (3), ball head (4), ball cup (5) and cutter slider (6). The hydraulic cylinder piston rod (101), ball head (4), ball cup (5) and cutter slider (6) are in a pre-tight connection state, and each contact surface always remains in contact and does not separate.

2. The flexible anti-twist device of the hydraulic cylinder of the sponge metal cutter-type hydraulic breaking press according to claim 1, characterized in that: The hydraulic cylinder piston rod (101) and the cutter slider (6) deflected at a certain angle. Specifically, the assembly consisting of the hydraulic cylinder piston rod (101), the connecting flange (103), and the ball head (4) and the assembly consisting of the bolt (102), the pressure plate (2), the ball cup (5), and the cutter slider (6) shifted along the mating spherical surface of the ball head (4) and the ball cup (5). The bolt (102) and the connecting flange (103) did not come into contact. Therefore, the hydraulic cylinder piston rod (101) and the connecting flange (103) were not subjected to rigid torsional force. After the disc spring group (3) on one side was pressed, the compression elastic force increased, while the disc spring group (3) on the other side loosened and released part of the pre-compression elastic force. The total compression elastic force provided by all disc spring groups (3) can still maintain the pre-tight connection state, and the contact surfaces remain in contact without separation.

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