1. The utility model provides a structure suitable for jar steady voltage in excavator hydraulic fracturing, includes well cylinder body and the hydraulic pressure quartering hammer operating system who is located well cylinder body, its characterized in that: the hydraulic breaking hammer is characterized in that the middle cylinder body is provided with a pressure stabilizing valve body, the middle cylinder body is provided with an oil way matched with the pressure stabilizing valve body, the pressure stabilizing valve body is provided with a valve A port, a valve B port and a valve C port, the oil way comprises an inlet and an outlet, the inlet is positioned on one side of the valve A port and is also connected with a hydraulic breaking hammer working system, the hydraulic breaking hammer working system is connected with the valve B port, and the valve C port is positioned on the same side as the outlet.

2. The structure suitable for the cylinder pressure stabilization in the hydraulic crushing of the excavator according to claim 1, wherein: the pressure stabilizing valve body comprises a valve cover (1), a valve core (4) and a valve sleeve (3), wherein the valve core (4) is located inside the valve sleeve (3), a spring (5) is arranged inside the valve core (4), a guide pad (2) is arranged inside the upper portion of the valve cover (1), and the upper end of the spring (5) is connected with the guide pad (2) in a matched mode.

Background

The hydraulic breaking hammer of the excavator used in the prior engineering is a hydraulic impact load, and continuous pressure fluctuation and pulse can be generated in the work process. Poor field environment and limited after-sale maintenance conditions. And the domestic engineering is numerous, and the continuous operation time is long. In order to improve the crushing efficiency, a client usually improves the rotating speed of the excavator and increases the working oil pressure, so that the working pulse is larger, the damage to a hydraulic system of the excavator and working parts in the crushing hammer is great, the excavation hydraulic main pump is seriously damaged, and the core parts of the crushing hammer are damaged or even scrapped; causing great property loss.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a structure suitable for stabilizing the pressure of a hydraulic crushing middle cylinder of an excavator, which is simple to process and convenient to install, disassemble and maintain. This structure has realized just can normally work above this pressure to the restriction of oil feed minimum pressure. The fluctuation of the oil supply pressure of the excavator can be fed back in real time, and the occurrence of abnormal pressure fluctuation in operation is reminded; the problems are solved in time, and a hydraulic system and a crushing system of the excavator are protected.

In order to achieve the purpose of the invention, the invention adopts the technical scheme that: the utility model provides a structure suitable for jar steady voltage in excavator hydraulic fracturing, includes well cylinder body and the hydraulic pressure quartering hammer operating system who is located well cylinder body, its characterized in that: the hydraulic breaking hammer is characterized in that the middle cylinder body is provided with a pressure stabilizing valve body, the middle cylinder body is provided with an oil way matched with the pressure stabilizing valve body, the pressure stabilizing valve body is provided with a valve A port, a valve B port and a valve C port, the oil way comprises an inlet and an outlet, the inlet is positioned on one side of the valve A port and is also connected with a hydraulic breaking hammer working system, the hydraulic breaking hammer working system is connected with the valve B port, and the valve C port is positioned on the same side as the outlet.

As an improvement: the pressure stabilizing valve body comprises a valve cover, a valve core and a valve sleeve, the valve core is located inside the valve sleeve, a spring is arranged inside the valve core, a guide pad is arranged inside the upper portion of the valve cover, and the upper end of the spring is connected with the guide pad in a matched mode.

Compared with the prior art, the invention has the advantages that: the invention can reduce the occurrence of abnormal pressure fluctuation in the operation process, stabilize the working pressure range, protect the whole system, improve the working efficiency, reduce the resource waste and generally prolong the service life of related parts.

Drawings

FIG. 1 is a schematic structural diagram of a cylinder pressure stabilizing structure for hydraulic crushing of an excavator according to the present invention;

reference symbol comparison table:

1-valve cover, 2-guide pad, 3-valve cover, 4-valve core, 5-spring.

Detailed Description

The following further describes embodiments of the present invention with reference to the accompanying drawings.

As shown in figure 1, the method of the invention is to change the internal manufacture of the existing hydraulic breaking hammer working system in advance, add a working oil path, install a pressure stabilizing valve and fix the pressure stabilizing valve on the pressure stabilizing valve by screws.

The working principle of the invention is as follows: the free pressure fluctuation of the oil inlet in the original breaking hammer is changed into the oil inlet pressure driving switch and the oil return path of the closed breaking hammer system. In the fig. 1, a valve cover 1 and a valve sleeve 3 are combined and integrally fixed in a breaking hammer system, and a guide pad 2, a spring 5 and a valve core 4 are sealed and restrained in the breaking hammer system; the pressure at the oil inlet A drives the valve sleeve 3 to compress and release the spring 5, so that the opening and closing of the oil way C and the oil way B are realized; the pre-compression amount of the spring 5 can be adjusted by adjusting the thickness of the guide pad 2, so that the pressure of the oil inlet A is adjusted, and the control on the pressure of the oil inlet pulse is realized. The pressure stabilizing valve can be integrally disassembled by loosening the screws on the valve cover 1, and convenience of field installation and maintenance is guaranteed.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.