Pressure-maintaining and regulating hydraulic control system of roll balance gear

Abstract

The invention discloses a pressure-maintaining and regulating hydraulic control system of a roll balance gear and relates to a hydraulic control system of a steel rolling machine. The pressure-maintaining and regulating hydraulic control system solves the problems of unreliable pressure maintenance, inconvenient equipment debugging and no pressure protection of a control loop in the prior art. The pressure-maintaining and regulating hydraulic control system is characterized in that: a hydraulic control loop comprises a pressure-maintaining loop of the roll balance gear and an adjusting loop of the roll balance gear; the pressure-maintaining loop is formed by connecting a pressure-reducing valve (11), an I-number electromagnetic directional valve (12), an energy accumulator (16), a safety valve (17), an I-number pressure meter (15), an II-number pressure meter (18) and a hydraulic oil pipe according to the conventional connecting method; the adjusting loop is formed by connecting an II-number electromagnetic directional valve (19), a one-way throttle valve (13), a pressure relay (14), a hydraulic locking valve (20), an overflow valve (21) and the hydraulic oil pipe according to the conventional connecting method; and the pressure-maintaining loop and the adjusting loop are separated and associated by using a hydraulic one-way valve (22) and a one-way valve (23).

Description

technical field

[0001] The invention belongs to a hydraulic control system of a steel rolling machine, in particular to a hydraulic control system that needs to be pressed and maintained during the rolling process and adjusted in a non-rolling state in the steel rolling equipment. Background technique

[0002] In steel rolling machinery and equipment, many roll balancing devices are hydraulically controlled, which need to be pressed and maintained in the rolling state. When the roll is installed for the first time or a new roll is replaced, pressure adjustment and position adjustment control are required. For example, the balance device of the roll in the steel pipe rolling mill and the balance device of the upper roll in the straightening machine are all hydraulic control mechanisms, which need to be pressed and maintained during rolling, and adjusted and controlled in the non-rolling state.

[0003] The roll balance device in the steel pipe rolling mill such as figure 1 S...

Examples

Embodiment Construction

[0020] like image 3 As shown, a hydraulic control system for maintaining pressure adjustment of a roll balancing device has a balancing hydraulic cylinder 1 with a built-in displacement sensor 2, which consists of a pressure reducing valve 11, a No. No. Ⅰ pressure gauge 15, No. Ⅱ pressure gauge 18 and hydraulic oil pipes form the pressure maintaining circuit of the roll balance device according to the conventional connection method; The valve 20, the relief valve 21 and the hydraulic oil pipe form the adjustment circuit of the roll balance device according to the conventional connection method. The two control circuits can work independently, and the pressure maintaining circuit and the adjusting circuit are separated and associated by the hydraulically controlled one-way valve 22 and the one-way valve 23 . Increase the No. Ⅱ electromagnetic reversing valve 19 to ensure that the roll device stays at any position at any time, and the adjustment is convenient; increase the hyd...

technical field

[0001] The invention belongs to a hydraulic control system of a steel rolling machine, in particular to a hydraulic control system that needs to be pressed and maintained during the rolling process and adjusted in a non-rolling state in the steel rolling equipment. Background technique

[0002] In steel rolling machinery and equipment, many roll balancing devices are hydraulically controlled, which need to be pressed and maintained in the rolling state. When the roll is installed for the first time or a new roll is replaced, pressure adjustment and position adjustment control are required. For example, the balance device of the roll in the steel pipe rolling mill and the balance device of the upper roll in the straightening machine are all hydraulic control mechanisms, which need to be pressed and maintained during rolling, and adjusted and controlled in the non-rolling state.

[0003] The roll balance device in the steel pipe rolling mill such as figure 1 S...

Examples

Embodiment Construction

[0020] like image 3 As shown, a hydraulic control system for maintaining pressure adjustment of a roll balancing device has a balancing hydraulic cylinder 1 with a built-in displacement sensor 2, which consists of a pressure reducing valve 11, a No. No. Ⅰ pressure gauge 15, No. Ⅱ pressure gauge 18 and hydraulic oil pipes form the pressure maintaining circuit of the roll balance device according to the conventional connection method; The valve 20, the relief valve 21 and the hydraulic oil pipe form the adjustment circuit of the roll balance device according to the conventional connection method. The two control circuits can work independently, and the pressure maintaining circuit and the adjusting circuit are separated and associated by the hydraulically controlled one-way valve 22 and the one-way valve 23 . Increase the No. Ⅱ electromagnetic reversing valve 19 to ensure that the roll device stays at any position at any time, and the adjustment is convenient; increase the hyd...

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