Novel locking cylinder applied to pendulum shear

Abstract

The utility model discloses a novel locking cylinder applied to pendulum shears, the locking cylinder is divided into an upper group and a lower group, the upper group and the lower group are respectively located on two sides of an area where an upper knife holder and a lower knife holder are located, a pressing cover is fixed on a machine body through a bolt and presses a locking lever and a cylinder barrel, an upper shear blade is located below the upper knife holder, and a lower shear blade is located above the lower knife holder. A rod row is fed between the upper shear blade and the lower shear blade, a disc spring is sleeved on the locking lever, eight locking cylinders are arranged in an upper group and a lower group, and a sealing ring is arranged on a lever piston; a sealing ring is a J-shaped sealing ring with the specification of 110 * 98 * 14, the groove width is 14 mm, the bottom diameter is 98 mm, the outer diameter of the bottom of a piston in a cylinder barrel is 104 mm, the size of a sealing groove of the locking cylinder pressing cover is 60 * 7, the diameter of the upper portion of the sealing groove is 53 mm, the sealing groove is sealed through felt, the upper portion of the sealing groove is a taper hole face, the taper is 30 degrees, the groove width is 5 mm, and a J50 dustproof sealing ring is embedded in the sealing groove.

Description

Technical Field

[0001] The utility model relates to a novel locking cylinder applied to swing shears. Background Art

[0002] Rebar is a commonly used material in engineering, and its diameter is between 14mm and 36mm. Rebar is mainly used in construction engineering. At present, domestic and foreign bar production lines adopt the fixed-length swing shear production process, and the shear blade locking cylinder rod uses φ5.55×110 O-ring as the sealing material. The following problems exist during use: the hydraulic cylinder leaks oil due to the rolling of the O-ring when the piston is running; in addition, the cylinder rod and the gland are sealed with felt, and foreign matter such as iron oxide and oil easily invade the cylinder, causing the cylinder to rust and damage, causing the cylinder to lose its function. Since the swing shear blade often needs to be replaced during the rolling process, the shear blade locking cylinder leaks oil and does not move, and the shear blade replacement time will be extended from 40 minutes to 90 minutes or even longer, and the leaked hydraulic oil pollutes the environment. Summary of the invention

[0003] The utility model aims to provide a novel locking cylinder applied to a swing shear, which can greatly save production time and eliminate the problem of oil leakage and environmental pollution.

[0004] The technical solution adopted by the utility model is a new type of locking cylinder used for swing shears, including an upper knife support, a lower knife support, an upper shear blade, a lower shear blade, a locking cylinder rod, a cylinder barrel, a disc spring, a clamping cover, a hydraulic oil pipe, a piston seal, and a clamping cover seal. The locking cylinder is divided into two upper and lower groups, which are respectively located on both sides of the area where the upper knife support and the lower knife support are located. The clamping cover is fixed to the machine body by bolts and presses the locking cylinder rod and the cylinder barrel. The upper shear blade is located below the upper knife support, and the lower shear blade is located above the lower knife support. The feeding rod row is in between, and the locking cylinder rod is equipped with a disc spring. There are 8 locking cylinders in the upper and lower groups, and a sealing ring is installed on the cylinder rod piston; the sealing ring is a J-type seal with a specification of 110×98×14, a groove width of 14mm, a bottom diameter of 98mm, and an outer diameter of the bottom of the piston in the cylinder barrel is 104mm. The sealing groove size of the locking cylinder clamping cover is 60*7, and the upper diameter is 53mm. Felt sealing is used, and the upper part of the sealing groove is a tapered hole surface with a taper of 30° and a groove width of 5mm. A J50 dustproof sealing ring is embedded.

[0005] Compared with the prior art, the utility model can not open the locking cylinder at least twice a month for 90 minutes each time, saving production time (90-40)*2=100 minutes. Replacing the shear blade 4 times a month saves 35*4=140Kg of oil, and 140*12=1680Kg of oil is saved throughout the year. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is a schematic diagram of the main cross-sectional structure of the utility model.

[0007] In the figure: 1: locking cylinder rod; 2: piston seal; 3: upper cylinder barrel; 4: pressing cover seal; 5: upper knife support; 6: upper shear blade; 7: rod row; 8: lower shear blade; 9: lower knife support; 10: lower cylinder barrel; 11: locking cylinder rod. DETAILED DESCRIPTION

[0008] A new locking cylinder for swing shears, comprising an upper knife support 5, a lower knife support 9, an upper shear blade 6, a lower shear blade 8, locking cylinder rods 1, 11, an upper cylinder barrel 3, a lower cylinder barrel 10, a disc spring, a clamping cover, a hydraulic oil pipe, a piston seal 2, and a clamping cover seal 4. The locking cylinder is divided into two groups, an upper group and an lower group, which are respectively located on both sides of the area where the upper knife support and the lower knife support are located. The clamping cover is fixed to the body by bolts and presses the locking cylinder rods 1, 11 and the upper and lower cylinder barrels 3, 10. The upper shear blade 6 is located below the upper knife support 5, and the lower shear blade 8 is located above the lower knife support 9. For rod row 7, the locking cylinder rods 1 and 11 are respectively provided with disc springs, and there are 8 locking cylinders in the upper and lower groups. The cylinder rod pistons of the locking cylinder rods 1 and 11 are respectively provided with sealing rings; the sealing ring is a J-type seal with a specification of 110×98×14, a groove width of 14mm, and a bottom diameter of 98mm. The outer diameter of the bottom of the piston in the upper and lower cylinder barrels 3 and 10 is 104mm. The sealing groove size of the locking cylinder clamping cover is 60*7, and the upper diameter is 53mm. Felt sealing is used, and the upper inner wall of the sealing groove is a conical surface with a taper of 30° and a groove width of 5mm. A J50 dustproof sealing ring is embedded.

[0009] The utility model cuts the rod row 7 by the joint action of the upper shear blade 6 and the lower shear blade 8. When the shear blade is replaced, the locking cylinder rod 1 is pushed by the pressure oil to compress the disc spring, at which time the pressure plate rises and the upper knife support 5 opens. When the pressure oil stops supplying, the locking cylinder rod 1 drives the pressure plate down under the action of the disc spring, at which time the oil at the bottom of the upper cylinder 3 flows back to the oil tank along the pipeline, and the upper knife support 5 is tightly locked. At this time, the upper and lower shear blades can do the work of shearing the rod row.

Claims

1. A new locking cylinder for swing shears, comprising an upper knife support, a lower knife support, an upper shear blade, a lower shear blade, a locking cylinder rod, a cylinder barrel, a disc spring, a clamping cover, a hydraulic oil pipe, a piston seal, and a clamping cover seal, wherein the locking cylinder comprises: The locking cylinder is divided into two groups, an upper and a lower group, which are respectively located on both sides of the area where the upper knife support and the lower knife support are located. The clamping cover is fixed to the machine body by bolts and presses the locking cylinder rod and the cylinder barrel. The upper shear blade is located below the upper knife support, and the lower shear blade is located above the lower knife support. The feed rod row is between the upper and lower shear blades. The locking cylinder rod is provided with a disc spring. There are a total of 8 locking cylinders in the upper and lower groups. A sealing ring is installed on the cylinder rod piston; the sealing ring is a J-type seal with a specification of 110×98×14, a groove width of 14mm, a bottom diameter of 98mm, and an outer diameter of the bottom of the piston in the cylinder barrel of 104mm. The sealing groove size of the locking cylinder clamping cover is 60*7, the upper diameter is 53mm, and a felt seal is used. The upper part of the sealing groove is a tapered hole surface with a taper of 30° and a groove width of 5mm. A J50 dustproof sealing ring is embedded.

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