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Hydraulic pump

A technology of hydraulic pumps and plunger pumps, which is applied in the direction of pumps, pump devices, liquid displacement machines, etc. It can solve the problems of slow oil supply, unstable oil pressure, and insufficient pressure, and achieve fast oil supply and stable oil pressure , the effect of sufficient pressure

Inactive Publication Date: 2014-12-24
YANGZHOU BAOYUAN MACHINERY MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Pumps used to deliver hydraulic oil can generally have various types and structures, however, many pumps are only suitable for low-pressure delivery due to unreasonable structures, slow oil supply, insufficient pressure, and unstable oil pressure

Method used

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  • Hydraulic pump

Examples

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Embodiment Construction

[0008] Such as figure 1 As shown, it is a hydraulic pump, including a transmission shaft 1, an inclined-plane step 2 is provided on the transmission shaft 1, and the lower end surface of the inclined-plane step 2 is an inclined plane. Also set bearing block 4, plunger pump body 20, gear pump body 19 and external gear 15 on transmission shaft 1, bearing block 4 is arranged on the below of slope step 2, and plane bearing 3 is set on bearing block 4. The plunger pump body 20 is set on the transmission shaft 1 through the needle bearing 21, the plunger pump body 20 is set under the bearing seat 4, and three plunger sleeves 8 are arranged in the plunger pump body 20 along the circumferential direction, each column The plunger 7 is respectively inserted in the plug sleeve 8, and the upper end of each plunger 7 is connected with a big end step 5 respectively, and each big end step 5 is respectively arranged between the bearing seat 4 and the plunger pump body 20, and each plunger Sp...

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Abstract

The invention relates to the field of oil pumps supplying pressure oil to hydraulic clamps, in particular to a hydraulic pump. The hydraulic pump comprises a transmission shaft and is integrally provided with a slope step; a bearing seat, a plunger pump body, a gear pump body and an external gear are arranged on the transmission shaft, and a bearing is arranged on the bearing seat; at least three plunger bushings are distributed peripherally in the plunger pump body, a plunger is penetratingly arranged in each plunger bushing, the upper end of each plunger is integrally provided with a big-end step, a spring is arranged outside each plunger bushing, the lower end of each plunger bushing is connected with an oil suction nozzle, each plunger bushing is provided with an oil hole, and the oil holes are connected with a same main oil outlet; the gear pump body is internally provided with an oil cavity communicated with each oil suction nozzle, and the gear pump body is provided with an oil inlet communicated with the oil cavity; an internal ring gear is meshed with the outer periphery of the external gear, a gear pump outer ring is arranged on the outer periphery of the internal ring gear, and a same bottom cover is arranged below the external gear, the internal ring gear and the gear pump outer ring. The hydraulic pump has the advantages that by means of twice boosting, quickness in oil supply, sufficiency in pressure and stability in oil pressure are achieved.

Description

technical field [0001] The invention relates to the field of oil pumps for supplying hydraulic tongs with oil under pressure. Background technique [0002] After the hydraulic pump is connected to the oil port of the hydraulic tongs through the oil pipe, the oil inlet and oil return are controlled to realize the upward and downward movement of the piston of the hydraulic tongs. Pumps used to deliver hydraulic oil can generally have various types and structures, but many pumps are only suitable for low-pressure delivery due to unreasonable structures, slow oil supply, insufficient pressure, and unstable oil pressure. Contents of the invention [0003] The object of the present invention is to provide a hydraulic pump with fast oil supply, sufficient pressure and stable oil pressure in order to overcome the deficiencies of the prior art. [0004] The purpose of the present invention is achieved like this: the hydraulic pump includes a transmission shaft, an inclined-plane s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B23/10
Inventor 吴书占
Owner YANGZHOU BAOYUAN MACHINERY MFG
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