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CN-224214348-U - Excavator hydraulic pump with pressure release structure

CN224214348UCN 224214348 UCN224214348 UCN 224214348UCN-224214348-U

Abstract

The utility model discloses an excavator hydraulic pump with a pressure relief structure, which relates to the technical field of excavator hydraulic pumps, and comprises a cylinder body mechanism, wherein the main body of the cylinder body mechanism is of an internal hollow structure, the right side of the cylinder body mechanism is fixedly connected with the pressure relief mechanism, the pressure relief mechanism is of a pipe body structure and is communicated with the cylinder body mechanism; when the oil needs to be replenished, the supply pump sends the cached oil back to the liquid inlet pipe through the supply pipe, so that the oil replenishing speed is accelerated.

Inventors

  • ZENG DESEN
  • LIAN WENQIANG
  • XIE JINGZHI

Assignees

  • 梅州市天功机械制造有限公司

Dates

Publication Date
20260508
Application Date
20250625

Claims (7)

  1. 1. The hydraulic pump of the excavator with the pressure relief structure comprises a cylinder body mechanism (1) and is characterized in that a main body of the cylinder body mechanism (1) is of an internal hollow structure, the right side of the cylinder body mechanism (1) is fixedly connected with the pressure relief mechanism (2), and the pressure relief mechanism (2) is of a pipe body structure and is communicated with the cylinder body mechanism (1); One side of keeping away from cylinder body mechanism (1) among relief mechanism (2) fixedly connected with relief pipe (2011), one side of keeping away from relief mechanism (2) among relief pipe (2011) fixedly connected with overflow pipe (2012), overflow pipe (2012) are the slope setting, and the distal end fixedly connected with overflow flange (2013) of overflow pipe (2012).
  2. 2. The excavator hydraulic pump with the pressure relief structure according to claim 1, wherein an inner cavity is formed in the cylinder body mechanism (1), a piston assembly (101) is connected in the inner cavity in a vertical sliding mode, an output assembly (1011) is fixedly connected to the top end face of the piston assembly (101), and the output assembly (1011) is of a cylinder structure.
  3. 3. The excavator hydraulic pump with the pressure relief structure according to claim 1, wherein a liquid inlet pipe (1012) is fixedly connected to the left side of the outer peripheral surface of the cylinder body mechanism (1), the liquid inlet pipe (1012) is communicated with the cylinder body mechanism (1), a liquid inlet valve (1013) is fixedly connected to the outer side of the liquid inlet pipe (1012), and a liquid inlet flange (1014) is fixedly connected to one side, away from the cylinder body mechanism (1), of the liquid inlet pipe (1012).
  4. 4. The excavator hydraulic pump with the pressure relief structure according to claim 1, wherein a buffer connection pipe (301) is fixedly connected to the bottom end of the outer peripheral surface of the pressure relief pipe (2011), a buffer mechanism (3) is fixedly connected to the bottom end surface of the buffer connection pipe (301), the main body of the buffer mechanism (3) is of a hollow tank structure, and a guide assembly (3011) is fixedly connected to the inner side of the buffer mechanism (3).
  5. 5. The excavator hydraulic pump with the pressure relief structure according to claim 4, wherein the guide assembly (3011) is transversely arranged, the guide rod assembly (3012) is inserted into the inner side of the guide assembly (3011), and the main body of the guide rod assembly (3012) is of a cylindrical structure.
  6. 6. The excavator hydraulic pump with the pressure relief structure of claim 5, wherein the bottom end face of the guide rod assembly (3012) is fixedly connected with a floating ball assembly (3013), the floating ball assembly (3013) is of an internal hollow structure, and the top end face of the guide rod assembly (3012) is also fixedly connected with a ball blocking assembly (3014).
  7. 7. The excavator hydraulic pump with the pressure relief structure according to claim 6, wherein the ball blocking assembly (3014) is used for sealing the discharging of the buffer connection pipe (301), a supply pipe (3015) is fixedly connected to the rear side of the outer peripheral surface of the buffer mechanism (3), the supply pipe (3015) is communicated with the liquid inlet pipe (1012) and used for backflow of oil, and a supply pump (3016) is fixedly connected to the outer side of the supply pipe (3015).

Description

Excavator hydraulic pump with pressure release structure Technical Field The utility model relates to the technical field of excavator hydraulic pumps, in particular to an excavator hydraulic pump with a pressure relief structure. Background The excavator is a mechanical device commonly used in engineering construction, a hydraulic pump is used as a core component of a hydraulic system of the excavator, the stability of working performance of the hydraulic pump directly influences the normal operation of the excavator, the excavator and the hydraulic pump thereof are disclosed in the prior patent, the patent publication No. CN201610563U comprises a main pump and a pilot pump in the hydraulic pump, the main pump is provided with a power input shaft, and the pilot pump is arranged at the radial position of the power input shaft and is positioned in the range of the axial length of the main pump. The utility model can reduce the axial length of the whole hydraulic pump, effectively saves the space of the whole hydraulic pump, and provides necessary space for the design and arrangement of the medium-sized and large-sized excavator. In view of the above-mentioned related art, the inventor considers that there is a limitation in that the existing hydraulic pump for an excavator has a low supplementing speed when the hydraulic pump is used if a large amount of pressure is released and then needs to be supplemented due to the lack of an effective pressure release buffer structure, so that we propose a hydraulic pump for an excavator with a pressure release structure to solve the above-mentioned problems. Disclosure of utility model Aiming at the defects of the prior art, the utility model provides the excavator hydraulic pump with the pressure relief structure, which solves the problems that the existing excavator hydraulic pump is lack of an effective pressure relief buffer structure when in use, so that the oil pump is slower in supplementing speed when supplementing is needed after a large amount of pressure relief, and has limitation. The hydraulic pump of the excavator with a pressure relief structure comprises a cylinder body mechanism, wherein the main body of the cylinder body mechanism is of an internal hollow structure, the right side of the cylinder body mechanism is fixedly connected with the pressure relief mechanism, and the pressure relief mechanism is of a pipe body structure and is communicated with the cylinder body mechanism; One side of keeping away from cylinder body mechanism among the relief mechanism fixedly connected with relief pipe, one side fixedly connected with overflow pipe of keeping away from relief mechanism among the relief pipe, the overflow pipe is the slope setting, and the distal end fixedly connected with overflow flange of overflow pipe. Preferably, an inner cavity is arranged in the cylinder body mechanism, a piston assembly is connected in the inner cavity in a vertical sliding mode, an output assembly is fixedly connected to the top end face of the piston assembly, and the output assembly is of a cylinder structure. Preferably, the left side of the outer peripheral surface of the cylinder body mechanism is fixedly connected with a liquid inlet pipe, the liquid inlet pipe is communicated with the cylinder body mechanism, the outer side of the liquid inlet pipe is fixedly connected with a liquid inlet valve, and one side, far away from the cylinder body mechanism, of the liquid inlet pipe is fixedly connected with a liquid inlet flange. Preferably, the outer peripheral surface bottom fixedly connected with buffering takeover of pressure release pipe, fixedly connected with buffering mechanism on the bottom terminal surface of buffering takeover, buffering mechanism's main part is inside hollow jar body structure, and buffering mechanism's inboard fixedly connected with direction subassembly. Preferably, the guide assembly is transversely arranged, the guide rod assembly is inserted into the inner side of the guide assembly, and the main body of the guide rod assembly is of a cylinder structure. Preferably, the bottom end face of the guide rod assembly is fixedly connected with a floating ball assembly, the floating ball assembly is of an internal hollow structure, and the top end face of the guide rod assembly is also fixedly connected with a ball blocking assembly. Preferably, the blocking ball assembly is used for sealing the buffer connection pipe for discharging, the rear side of the outer peripheral surface of the buffer mechanism is fixedly connected with a supply pipe, the supply pipe is communicated with the liquid inlet pipe and used for refluxing oil liquid, and the outer side of the supply pipe is fixedly connected with a supply pump. Advantageous effects The utility model provides an excavator hydraulic pump with a pressure relief structure. Compared with the prior art, the method has the following beneficial effects: This excavator hydraulic pump with pressure