CN213173240U

CN213173240U - Ventilating vibration cavity of vibrating plate compactor

Info

Publication number: CN213173240U
Application number: CN202021442501.2U
Authority: CN
Inventors: 姜右良
Original assignee: Ishikawa Machinery Co ltd
Current assignee: Ishikawa Machinery Co ltd
Priority date: 2020-07-21
Filing date: 2020-07-21
Publication date: 2021-05-11
Anticipated expiration: 2030-07-21

Abstract

The utility model belongs to the technical field of the vibration plate compactor, concretely relates to ventilative vibration cavity of vibration plate compactor, including the vibration cavity, the front end of vibration cavity is provided with through the lid, through covering and being provided with a through-hole, the oil blanket is installed to the inboard of axle through-hole, and rotatory the cover has connect the eccentric shaft in the vibration cavity, the rear end of eccentric shaft is installed in the vibration cavity inboard, and the front end of eccentric shaft runs through oil blanket and axle through-hole, and the front end inboard of eccentric shaft is provided with pressure release hole, cavity trachea and the fumarole of gas circuit intercommunication in proper order, the pressure release hole corresponds and sets up in the vibration cavity inboard, the fumarole correspondence sets up in through covering the outside, and the vibration cavity bottom has still. The utility model provides a but set up the ventilative passageway in its eccentric shaft of gas path intercommunication vibration cavity inner and outer space in the vibration cavity, can effectively avoid leading to the problem of lubricating oil seepage because of the cavity internal gas pressure is too high, have apparent practical meaning.

Description

Ventilating vibration cavity of vibrating plate compactor

Technical Field

The utility model relates to a vibration plate compactor technical field particularly, relates to the ventilative vibration cavity of vibration plate compactor.

Background

The vibrating plate compactor is small compacting equipment with vibrating function, and utilizes the centrifugal force generated by the high-speed rotation of the eccentric shaft to generate vibration to tamp pavement materials and increase the compactness of the pavement. The eccentric shaft is supported by bearings at two ends to rotate in the vibration cavity in a high-frequency variable load mode, the bearings generate heat due to friction, gas expansion occurs due to temperature rise inside the closed cavity, high-pressure gas leaks at the weakest oil seal position, and then leakage of lubricating oil is caused. Therefore, in order to improve the durability of the equipment, the vibration cavity needs to be developed and developed in an improved mode to avoid the leakage of lubricating oil.

SUMMERY OF THE UTILITY MODEL

The ventilating vibration cavity of the vibration plate compactor is provided to solve the problems that the internal temperature of the vibration cavity of the general vibration plate compactor rises after continuous operation, gas expansion occurs, high-pressure gas is easy to leak at the weakest oil seal position, and simultaneously lubricating oil is caused to influence the service life of equipment.

The ventilating vibration cavity of the vibrating plate compactor comprises a vibration cavity body, wherein a through cover is arranged at the front end of the vibration cavity body, a shaft through hole is formed in the through cover, an oil seal is installed on the inner side of the shaft through hole, an eccentric shaft is rotatably sleeved in the vibration cavity body, the rear end of the eccentric shaft is installed on the inner side of the vibration cavity body, the front end of the eccentric shaft penetrates through the oil seal and the shaft through hole, a labyrinth air passage communicated with the atmosphere on the inner side of the vibration cavity body is formed in the front end of the eccentric shaft, and.

Further, labyrinth air flue is including the pressure release hole, cavity trachea and the fumarole of gas circuit intercommunication in proper order, the pressure release hole corresponds and sets up in the vibration cavity inboard, the fumarole corresponds and sets up in passing through the lid outside.

Further, all communicate through ventilative tubule gas circuit between pressure release hole and fumarole and the cavity trachea, ventilative tubule link up the lateral wall and the cavity trachea of eccentric shaft perpendicularly, cavity trachea and ventilative tubule mutually perpendicular.

Further, the front end and the rear end of the vibration cavity are provided with bearings, and the eccentric shaft is sleeved in the bearings.

Furthermore, a flat key is installed at the front end of the eccentric shaft, and a belt pulley is sleeved at the front end of the eccentric shaft corresponding to the flat key.

Furthermore, an end cover is installed at the rear end of the vibration cavity, and sealing O rings are arranged on the inner sides of the transparent cover and the end cover.

Further, the transparent cover and the end cover are fixedly connected with the vibration cavity through screws.

The utility model has the advantages that:

1. the internal and external air pressure of the vibration cavity can be balanced through the labyrinth air passage, and the lubricating oil is prevented from being brought out by the sprayed high-pressure gas to cause leakage.

2. The labyrinth air passage design can prevent lubricating oil from flowing out through the air passage while ventilating.

3. The structure is simple, the biggest difference with the conventional vibration cavity manufacturing is that a labyrinth air passage is processed, and the popularization and the use are convenient.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a perspective view of the internal structure of an air-permeable vibration chamber of a vibrating plate compactor.

The attached drawings are as follows:

1-vibration cavity, 2-transparent cover, 3-shaft through hole, 4-oil seal, 5-eccentric shaft, 61-decompression hole, 62-hollow air pipe, 63-air injection hole, 64-air-permeable thin pipe, 7-bearing, 8-flat key, 9-belt pulley, 10-end cover, 11-sealing O ring, 12-screw and 101-lubricating oil.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1, the present embodiment provides a ventilation vibration cavity of a vibration plate compactor, which includes a vibration cavity 1, a transparent cover 2 is disposed at a front end of the vibration cavity 1, a shaft through hole 3 is disposed on the transparent cover 2, an oil seal 4 is disposed at an inner side of the shaft through hole 3, an eccentric shaft 5 is rotatably sleeved in the vibration cavity 1, a rear end of the eccentric shaft 5 is mounted at an inner side of the vibration cavity 1, a front end of the eccentric shaft 5 penetrates through the oil seal 4 and the shaft through hole 3, a labyrinth air passage communicated with an atmosphere at an inner side and an outer side of the vibration cavity 1 is disposed at a front end of the eccentric shaft 5, the labyrinth air passage includes a pressure relief hole 61, a hollow air pipe 62 and an air jet hole 63, which are sequentially communicated by an air passage, the pressure relief hole 61 is correspondingly disposed at the inner side of the vibration cavity 1, the air jet hole 63 is correspondingly disposed, the air permeable thin tube 64 vertically penetrates through the side wall of the eccentric shaft 5 and the hollow air tube 62, the hollow air tube 62 and the air permeable thin tube 64 are perpendicular to each other, and lubricating oil 101 is filled at the bottom of the vibration cavity 1. The vertical air permeable thin tube 64 is convenient for processing and manufacturing, and the mutually vertical hollow air tube 62 and the air permeable thin tube 64 can effectively prolong the air path, so that the leakage of the lubricating oil through the air path is avoided.

The front end and the rear end of the vibration cavity 1 are provided with bearings 7, and the eccentric shaft 5 is sleeved in the bearings 7. The bearings 7 ensure smooth rotation of the eccentric shaft 5.

The front end of the eccentric shaft 5 is provided with a flat key 8, and the front end of the eccentric shaft 5 is sleeved with a belt pulley 9 corresponding to the flat key 8. The flat key 8 can fix the belt pulley 9, and ensures that the eccentric shaft 5 can be stably driven to rotate by the rotation power input through the belt pulley 9.

An end cover 10 is installed at the rear end of the vibration cavity 1, and sealing O rings 11 are arranged on the inner sides of the transparent cover 2 and the end cover 10. The design of the end cover 10 facilitates the equipment assembly to fix the eccentric shaft 5, and the sealing O-ring 11 can prevent lubricating oil from leaking out through a gap at the joint, thereby improving the stability of the equipment.

The transparent cover 2 and the end cover 10 are both fixedly connected with the vibration cavity 1 through screws 12. The transparent cover 2 and the end cover 10 fixed by the screws are convenient to assemble and disassemble, and the assembly and maintenance cost is reduced.

During practical use, the external power transmission system drives the belt pulley 9 to rotate at a high speed, the eccentric shaft 5 rotates at a high frequency and generates alternating exciting force under the connecting action of the flat key 8, the bearing 7 is subjected to continuous rotation and impact force to generate high temperature, further, the temperature of air in the vibration cavity 1 rises to generate gas expansion, the expanded gas is communicated with the outside through the gas path of the pressure relief hole 61, the hollow gas pipe 62 and the gas jet hole 63, so that the air pressure inside and outside the vibration cavity 1 is kept balanced, and meanwhile, because of the high-speed rotation of the eccentric shaft 5, the lubricating oil 101 cannot be adhered to the outer surface of the eccentric shaft 5, so that the lubricating oil 101 cannot flow out through the pressure relief. In addition, because the air pressure inside and outside the vibration cavity 1 is the same, the oil seal 4 has no axial load, can better play a sealing role, and effectively avoid the leakage of the lubricating oil 101.

The foregoing is a more detailed description of the present invention, and it is not intended that the present invention be limited to the specific details, since modifications and variations will be apparent to those skilled in the art.

Claims

1. The air-permeable vibration cavity of the vibrating plate compactor is characterized by comprising a vibration cavity body, wherein a through cover is arranged at the front end of the vibration cavity body, a shaft through hole is formed in the through cover, an oil seal is installed on the inner side of the shaft through hole, an eccentric shaft is rotatably sleeved in the vibration cavity body, the rear end of the eccentric shaft is installed on the inner side of the vibration cavity body, the front end of the eccentric shaft penetrates through the oil seal and the shaft through hole, a labyrinth air passage communicated with the atmosphere on the inner side of the vibration cavity body is formed in the front end of the eccentric shaft.

2. The air-permeable vibration cavity of the vibrating plate compactor according to claim 1, wherein the labyrinth air passage comprises a pressure relief hole, a hollow air pipe and an air injection hole which are sequentially communicated with an air passage, the pressure relief hole is correspondingly arranged on the inner side of the vibration cavity, and the air injection hole is correspondingly arranged on the outer side of the transparent cover.

3. The air-permeable vibration cavity of the vibratory plate compactor according to claim 2, wherein the pressure relief hole and the air vent are communicated with the hollow air pipe through air passages of air-permeable thin pipes, the air-permeable thin pipes vertically penetrate through the side wall of the eccentric shaft and the hollow air pipe, and the hollow air pipe is perpendicular to the air-permeable thin pipes.

4. The air-permeable vibration chamber of the vibrating plate compactor according to claim 1, wherein bearings are provided at both the front and rear ends of the vibration chamber, and the eccentric shaft is journaled in the bearings.

5. The air-permeable vibration cavity of the vibratory plate compactor according to claim 1, wherein a flat key is installed at the front end of the eccentric shaft, and a belt pulley is sleeved on the front end of the eccentric shaft corresponding to the flat key.

6. The air-permeable vibration chamber of the vibrating plate compactor according to claim 1, wherein an end cap is installed at the rear end of the vibration chamber, and sealing O-rings are provided on the inner sides of the end cap and the air-permeable cover.

7. The air-permeable vibration chamber of the vibrating plate compactor according to claim 6, wherein the through-cover and the end-cover are fixedly connected to the vibration chamber by screws.