CN203320491U - Buffering device of hydraulic opening-closing machine - Google Patents

Abstract

The utility model discloses a buffer device for a hydraulic hoist, which belongs to the technical field of hydraulic hoists. The device includes a piston rod, a cylinder body and a piston. The piston rod and the piston are both arranged inside the cylinder body; The front end of the piston rod is provided with a rod end buffer and a rod end positioning ring for use in conjunction, and a rod end buffer and a rod end positioning ring are provided at the tail end of the piston rod; the piston is fixed by a piston cap At the tail end of the piston rod; where the piston rod is connected to the gate. The buffer device of the hydraulic hoist of the utility model has a reasonable and simple structure, and is easy to maintain and maintain. It can not only realize the stroke positioning of the hydraulic hoist, but also ensure the normal opening and closing of the gate. The equipment maintenance cost reduces the production cost and has good practicability.

Description

A buffer device for a hydraulic hoist

technical field

The utility model belongs to the technical field of hydraulic hoists, in particular to a buffer device for hydraulic hoists.

Background technique

In water conservancy and hydropower projects, hydraulic hoists are used to control the opening and closing of large and medium-sized cast iron gates and steel gates, which have the advantages of high transmission efficiency and stable operation. Some gates require the stroke positioning of the hydraulic hoist in the application, which puts forward higher requirements for the performance of the hydraulic hoist. The piston of the traditional hydraulic hoist is in direct contact with the guide sleeve and the back cover of the cylinder. After a long time, the piston, the guide sleeve and the back cover of the cylinder will be damaged, causing damage to the oil cylinder, and the hoist cannot open the gate normally.

Contents of the invention

Purpose of the invention: Aiming at the deficiencies in the prior art, the purpose of this utility model is to provide a buffer device for a hydraulic hoist, so that it can not only realize the stroke positioning of the hydraulic hoist, but also ensure normal gate opening and closing , while reducing equipment loss.

Technical solution: In order to realize the above-mentioned purpose of the invention, the technical solution adopted in the present invention is as follows:

A buffer device for a hydraulic hoist, comprising a piston rod, a cylinder body and a piston, the piston rod and the piston are both arranged inside the cylinder body; a rod-end buffer for use in cooperation is provided at the front end of the piston rod And the rod end positioning ring, the rod end buffer and the rod end positioning ring are arranged at the tail end of the piston rod; the piston is fixed on the tail end of the piston rod through the piston cap; wherein, the piston rod is connected with the gate.

A guide sleeve is provided on the outer circumference of the piston rod.

Beneficial effects: Compared with the prior art, the buffer device of the hydraulic hoist of the utility model has a reasonable and simple structure, and is easy to maintain and maintain. It can not only realize the stroke positioning of the hydraulic hoist, but also ensure normal gate opening and closing , At the same time, it reduces the loss of equipment, saves equipment maintenance costs, reduces production costs, and has good practicability.

Description of drawings

Figure 1 is a structural schematic diagram of a buffer device for a hydraulic hoist.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described further.

As shown in Figure 1, the buffer device of the hydraulic hoist includes a piston rod 1, a guide sleeve 2, a rod end buffer 3, a cylinder 4, a piston 5, a piston cap 6, a rod end buffer 7 and a rod end The end positioning ring 8, the piston rod 1, the guide sleeve 2 and the piston 5 are all arranged inside the cylinder body 4; 2. A rod end buffer 3 and a rod end positioning ring are provided at the front end of the piston rod, and a rod end buffer 7 and a rod end positioning ring 8 are provided at the tail end of the piston rod 1; among them, the piston rod 1 is connected to the gate.

Working process: set the guide sleeve 2 on the outer circumference of the piston rod 1 to keep the piston rod 1 from swinging and run stably; The tail end of 1 is provided with a rod end buffer 7 and a rod end positioning ring 8. In the actual opening and closing process, the front and rear ends are punched by the rod end buffer 3 and the rod end buffer 7, and the rod end positioning ring and The no-rod end positioning ring 8 controls the in-place position.

The buffer device of the hydraulic hoist has a reasonable and simple structure and is easy to maintain and maintain. It can not only realize the stroke positioning of the hydraulic hoist, but also ensure the normal gate opening and closing, while reducing equipment loss and saving equipment maintenance costs. , reduces the production cost, and has good practicability.

Claims (2)

1. the buffer of a hydraulic hoist, it is characterized in that: comprise piston rod (1), cylinder body (4) and piston (5), described piston rod (1) and piston (5) all are arranged on the inside of cylinder body (4); Front end at described piston rod (1) is provided with rod end bolster (3) and the rod end locating ring be used in conjunction with, and at the tail end of piston rod (1), is provided with rear end bolster (7) and rear end locating ring (8); Described piston (5) is fixed on the tail end of piston rod (1) by piston cap (6); Wherein, piston rod (1) is connected with gate.

2. the buffer of hydraulic hoist according to claim 1, is characterized in that: be provided with fairlead (2) on the periphery of described piston rod (1).

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