CN2170324Y

CN2170324Y - Hydraulic pile-driver with pressure-operated hammer

Info

Publication number: CN2170324Y
Application number: CN 93228674
Authority: CN
Inventors: 顾志刚
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-07-06
Filing date: 1993-07-06
Publication date: 1994-06-29
Anticipated expiration: 2003-07-06

Abstract

The utility model relates to an improved hydraulic pile feeding hammer, mainly comprising a big concave piston, a small concave piston, an anvil block housing whose inner cavity is filled with oil mediums, an anvil hammer, a running wheel and a hydraulic lifting mechanism comprising a cylinder body, a main piston, an accessorial piston, a push rod and a conflicting head. The conflicting head comprises a colliding core and a colliding housing, and a pressure controlling meter is arranged on a bypass between the inner cavity of the colliding core and the oil supplying hole of the cylinder body. The utility model is characterized in that the impact performance of resisting instantaneous pressure of the anvil block housing is improved, and the safe operation of the anvil block housing is ensured. So the utility model not only has good operating conditions but also reduces the manufacturing and installing cost, and the utility model is suitable for driving piles in various construction projects.

Description

Hydraulic pile-driver with pressure-operated hammer

The utility model relates to a kind of capital works piling equipment, particularly a kind of fluid power beetle-head.

Before the patent application of this fluid power beetle-head, the acquired fluid power beetle-head of applicant patent (patent No. is 88210545.0).Though solved problems such as noise, air pollution and pile crown be frangible preferably, but still remained problems such as unreliable, the complex manufacturing of a few thing performance, installation cost height.Because of being subjected to integrally-built restriction, its anti-instantaneous fluid power impact property is unreliable as: the anvil shell of fluid power anvil block, two pistons of anvil block stable bad, leakage of oil is serious during construction, its control lever is installed very difficulty, and the difficult solution of the sealing between the anvil block housing, and the fabrication and installation cost is higher; Two guide pegs are because longer, and not only machining accuracy is difficult to meet the demands, and packaging technology is also complicated, be difficult to guarantee the balance of two guide pegs, very easily be damaged in the installation, thereby cause the pile monkey impact velocity to be obstructed, and produce very strong destructive power, hammer body is damaged; Rush down the equilibrant force that produces instantaneous time when oily control piston (payable at sight piston) and touching lever bump against, the outage on main piston top can not in time be opened, thereby cause the instantaneous increase of pressure of whole hydraulic system and unpredictable, system is damaged.

In view of the deficiency that above-mentioned prior art exists, the purpose of this utility model provides a kind of fluid power beetle-head that has improved, and make it to have reliable service behaviour and guarantee, but simplified assembling process again simultaneously reduces the fabrication and installation cost.

The purpose of this utility model is achieved in that it comprises that upper and lower port puts little, big piston and inner chamber respectively and be filled with the anvil block housing of oily medium and be located at the anvil hammer of valve piston top and by oil cylinder, major and minor piston, push rod, the anvil hammer hydraulic lifting controlling organization of meeting and discussing and constituting, its improved technical essential is: place little, the big piston of the upper and lower port of anvil block housing to be the female piston of relative installation, the following and left-hand thread of big piston is installed between the restriction flange on the outer lower flange of anvil block housing and is provided with the stage clip that can make large and small piston reset; Being evenly distributed with on anvil hammer circumference can be along the guide wheel that rolls on the hammer body retaining wall, and the telescope support afterbody that guide wheel is installed is provided with stage clip; Meet and discuss and hit the telescopic shell that hits in core bottom and constitute by hitting core and being enclosed within this, hit in the oil supplying hole in in-core chamber and the bypass between the oil cylinder oil supplying hole pressure controller is set, make it when the auxiliary piston on the push rod rises to the summit and hits shell joint and touch with anvil hammer and main piston, the anxious poly-instantaneous pressure that rises of pressure in the cylinder body is opened pressure controller, pressure oil enters the inner chamber that hits core rapidly, break auxiliary piston and the equilibrant force that hits the instantaneous time that produces when shell bumps against, hitting shell this moment clashes into downwards rapidly, and make the downward displacement rapidly of auxiliary piston, thereby guarantee that hydraulic system is not damaged.

The utility model is owing to place little, the big piston of anvil block housing upper and lower port to be spill, make anvil block housing inner chamber form double wall, stability, manufacturability and the sealing effectiveness of large and small piston have been improved, and improved the impact property of the anti-instantaneous pressure of anvil block housing, thereby guaranteed the safe and reliable work of anvil block housing, particularly adopt guide wheel to replace two longer guide pegs in the former fluid power beetle-head, not only operation condition is good, and can reduce the fabrication and installation cost greatly.

Below in conjunction with accompanying drawing the utility model is further described.

Fig. 1 is the utility model structural representation.

Fig. 2 is the part-structure schematic diagram of meeting and discussing.

By accompanying drawing as can be known: the utility model comprises anvil body retaining wall 16 and places the interior oil cylinder 4 of this retaining wall, anvil hammer 6, anvil block housing 8, on the anvil block housing 8, lower port is provided with a little female piston 9 and a big female piston 10 respectively, and two female piston are installed relatively, the inner chamber of anvil block housing 8 has oily medium 17, following and the left-hand thread of big female piston is installed in outside the anvil block housing and is provided with 12 reseting pressuring springs 18 between the restriction flange 19 on the lower flange, thereby big or small piston reset is guaranteed, oil cylinder 4 its internal upper parts of band outage C1 and oil supplying hole A are provided with by hitting core 12 and hitting meeting and discussing that shell 3 and back-moving spring 22 constitute, the bottom is provided with main piston assembly and the auxiliary piston 14 that is made of piston rod 5 and piston 13, push rod 15; The lower end of piston rod 5 is packed in the groove of anvil hammer 6, hit in the oil supplying hole B of core 12 inner chamber D and the bypass between the oil cylinder 4 oil supplying hole A pressure controller 2 is set, the circumference of anvil hammer 6 is first-class to be arranged with six guide wheels 7, telescope support 21 afterbodys that this guide wheel 7 is installed are provided with stage clip 20, anvil hammer 6 is in operation, guide wheel 7 is along hammer body retaining wall 16 scroll-up/down, because the conciliation of stage clip 20, make piston 13, piston rod 5 avoid extraneous interference to greatest extent, make it obtain good operation condition.

Operating principle of the present utility model is such: when hydraulic system is started working, hydraulic oil enters inner chamber of cylinder block from cylinder body 4 oil supplying hole A, seal outage f piston rod 5 walls on owing to auxiliary piston 14 this moment, thereby drive main piston assembly, auxiliary piston and push rod 15, anvil hammer 6 rises together, top and the moment of hitting shell 3 collisions when auxiliary piston 14, anxious poly-rising of pressure in the cylinder body, pressure controller 2 is opened, pressure oil enters the inner chamber D that hits core 12 rapidly, make and hit the downward rapidly bump of shell 3, auxiliary piston 14 is rapidly to bottom offset, outage f on the piston rod 5 is opened, the pressure oil that enters in the cylinder body 4 from the A hole is sprayed from outage f, and enter in the auxiliary fuel tank through cylinder body 4 top outage C1, outage C2 through auxiliary fuel tank 1 is discharged to hydraulic circuit then, descend along with the urgency of inner chamber of cylinder block oil pressure is poly-, anvil hammer 6 hurtles down, by valve piston 9 and oily medium 17 impact energy that anvil hammer 6 falls is passed to big piston 10, and pressure is acted on the pile crown by big piston 10, because when the anvil hammer drops on the valve piston 9, again original position is got back on push rod 15 tops, auxiliary piston 14 is closed outage 5, back-moving spring 18 makes greatly, valve piston 10,9 reset, the circulation that goes round and begins again is like this gone down, and realizes the purpose of piling.

Claims

1, a kind of fluid power beetle-head, it comprises that upper and lower port puts little, big piston and inner chamber respectively and be filled with the anvil block housing of oily medium and be located at the anvil hammer of valve piston top and by oil cylinder, major and minor piston, push rod, the anvil hammer hydraulic lifting controlling organization of meeting and discussing and constituting, it is characterized in that: place little, the big piston of the upper and lower port of anvil block housing to be the female piston of relative installation, the following and left-hand thread of big piston is installed between the restriction flange on the outer lower flange of anvil block housing and is provided with the stage clip that can make large and small piston reset; Being evenly distributed with on anvil hammer circumference can be along the guide wheel that rolls on the hammer body retaining wall, and the telescope support afterbody that guide wheel is installed is provided with stage clip; Meet and discuss and hit the shell that hits that to stretch the place in the core bottom and constitute, hit in the oil supplying hole in in-core chamber and the bypass between the oil cylinder oil supplying hole pressure controller is set by hitting core and being enclosed within this.