Connecting device applied to excavator and excavator

A technology for connecting devices and excavators, which is applied in the direction of mechanically driven excavators/dredgers, etc., can solve the problems of baffles being easily broken, and achieve the effect of reducing the activity space.

Pending Publication Date: 2020-05-05
SANY HEAVY MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects of the prior art, and provide a connecting device and excavator applied to excavators, in order to solve the problem of the pin shaft used to connect the stick and the boom in the prior art, and its baffle plate is affected by It is easy to break due to the impact of axial force

Method used

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  • Connecting device applied to excavator and excavator
  • Connecting device applied to excavator and excavator
  • Connecting device applied to excavator and excavator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Excavators are one of the common construction machinery, and the requirements for their safety are relatively high. Once the connection of the active parts fails, it is likely to cause a production accident, which is extremely harmful.

[0044] On the excavator, the stick 1 and the boom 2 are the main components, and their main function is to control the excavation and loading of the bucket. Stick 1 and boom 2 are movable parts, and the reliability of the connection between them is very important.

[0045] Therefore, in this embodiment, a connection device applied to an excavator is proposed, which can realize the connection between the stick 1 and the boom 2, and has the advantages of high reliability and long service life.

[0046] see figure 1 , a connection device applied to an excavator, including a pin shaft 3 and a buffer member 4, wherein the pin shaft 3 is used to connect the stick 1 and the boom 2, and the buffer member 4 is used to provide a buffer force fo...

Embodiment 2

[0082] The difference between this embodiment and the first embodiment is that the buffer member 4 can be a compression spring. Wherein, during installation, the compression spring needs to be sleeved on the pin shaft 3 .

[0083] Compared with the wave spring, in this embodiment, only one compression spring is needed, and the installation is more convenient.

Embodiment 3

[0085] The difference between this embodiment and the first embodiment is that the buffer member 4 can be an elastic ring. Wherein, during installation, the elastic ring needs to be sleeved on the pin shaft 3 .

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PUM

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Abstract

The invention provides a connecting device applied to an excavator and the excavator. The connecting device comprises a pin shaft for connecting a bucket rod and a swing arm and a buffer piece for providing buffer force to the pin shaft, wherein the bucket rod is inserted into the swing arm, and the pin shaft penetrates through the bucket rod and the swing arm, so that the bucket rod and the swingarm are rotatably connected; a baffle is arranged at the top of the pin shaft; and the buffer force is parallel to the axis line of the pin shaft, and the buffer force points away from the baffle. Byusing the connecting device, the service life of the pin shaft can be prolonged, the possibility of fatigue fracture of the baffle can be effectively reduced, and meanwhile, the reliability of the connection between the bucket rod and the swing arm is ensured.

Description

technical field [0001] The invention relates to the technical field of mechanical connection, in particular to a connection device applied to an excavator and the excavator. Background technique [0002] The stick of the excavator is rotatably connected with the boom through a pin shaft. During the working process, due to friction and other reasons, the gap between the stick and the pin shaft will gradually become larger, and this will cause the stick to squeeze the pin shaft, so that the pin shaft is subjected to axial force, and in the Axial movement occurs in the upward direction. [0003] Under long-term excavation conditions, the baffle plate on the pin shaft will be deformed due to the impact of repeated axial force. When the deformation accumulates to a certain extent and exceeds the yield limit of the baffle, the baffle will produce fatigue fracture. [0004] After the baffle breaks, the range of movement of the pin shaft in the axial direction will lose its restr...

Claims

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Application Information

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IPC IPC(8): E02F3/36E02F3/38
CPCE02F3/36E02F3/38
Inventor 史志伟吕梁郭春林
Owner SANY HEAVY MACHINERY
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