CN88210099U

CN88210099U - Hydraulic vibration exciter

Info

Publication number: CN88210099U
Application number: CN 88210099
Authority: CN
Inventors: 李健成
Original assignee: Yan Wengong Feng Sufan
Current assignee: Yan Wengong Feng Sufan
Priority date: 1988-01-29
Filing date: 1988-01-29
Publication date: 1988-11-09

Abstract

The utility model belongs to a mechanical element which converts a direct current hydraulic power source into energy output doing simple harmonic motions. A vibration exciter of the utility model is composed of a hydraulic automatic reversing part and the output part of mechanical energy which are connected into integration through screw bolts. Compared with the existing mechanically driven inertial exciter and a vibration exciter with an elastic linking rod, the vibration exciter has the advantages of adjustable exciting force and exciting frequency, light weight, small size, convenient integral dismounting and part replacement. In particular, the usage on some machines already provided with hydraulic power systems is more convenient; as long as an oil path is switched on, the vibration exciter can be started to work.

Description

Hydraulic vibration exciter

The utility model belongs to mechanical component, is the direct current hydraulic power supply is changed into the energy output mechanical component of doing simple harmonic motion.

Vibration exciter is the device that produces the excitation force source in the vibrating machine, and widely used traditional vibration exciter has mechanically operated inertia vibration generator and elastic link vibration exciter now.The working principle of inertia vibration generator be with prime mover (motor or oil hydraulic motor) through or have the axle rotation of eccentric mass, the inertia masterpiece excitation force that utilizes eccentric mass to produce without actuator drives.The working principle of elastic link vibration exciter is to utilize eccentric shaft to make connecting rod reciprocating, by the elastic component that links to each other with connecting rod excitation force is passed to vibrating table again.The deficiency that above-mentioned vibration exciter exists is that the occupied spatial volume of excitation system is big; Heavy Weight; mechanical transmission speed governing difficulty; maintenance and installation need the many parts of dismounting; make equipment downtime long, especially when the big excitation force of needs, then the quality of this type of vibration exciter is big; and heavy, make installing/dismounting and more renew the part difficulty.In addition, the output frequency of this type of vibration exciter, amplitude and maximum, force are all definite value, are difficult to adapt to the requirement that changes Vibration Parameter.

The purpose of this utility model provides a kind of can the generation than big excitation force, the quality of machine own is little, and the element of complete machine is convenient to dismounting and is changed, and excitation force and excited frequency can be regulated, change the vibration exciter that vibrating machine is worked to adapt to Vibration Parameter under optimized parameter.

Structure of the present utility model is made up of hydraulic control automatic reverse and mechanical energy output two-part.

Hydraulic control automatic reverse part is made up of reversing slide valve spool, valve body, spool end cap.The oilhole duct symmetric arrangement of valve body.Spool is packed into after the spool bore, with the spool end cap with sealed at both ends.

The mechanical energy output is made up of piston, piston rod, piston/cylinder, cylinder nose end lid.

Vibration exciter integral body promptly with Bolt Connection together by above-mentioned two-part, two-part oil circuit all is closed in the inside of valve body, what expose only has a hydraulic oil import and an outlet of hydraulic oil.

Embodiment of the present utility model as shown in drawings, integral body can be divided into upper and lower two-part: top is divided into hydraulic control automatic reverse part, is made up of valve core of the spool valve (1), valve body (2), spool end cap (3).Spool bore (4) and oilhole (6) are arranged on valve body (2), have pocketed oil space (5) on the spool end cap (3).The bottom is divided into the mechanical energy output, is made up of piston (7), piston rod (8), piston/cylinder (9) and cylinder nose end lid (10).Cylinder hole (11) is arranged on piston/cylinder (9), have pocketed oil space (12) on the cylinder nose end lid (10).

For the ease of the spool bore (4) on the guiding valve valve body (2) is carried out bore hole and grinding, so spool bore (4) adopts through hole, spool (1) is packed into after the spool bore (4), with spool end cap (3) with sealed at both ends.Pocketed oil space (5) is arranged, the buffering lubricating pad when commutating on the spool end cap (3) as reversing slide valve spool (1) to-and-fro motion.Valve body (2) upper oil hole (6) duct symmetric arrangement.The area of valve body (2) upper oil hole (6) and spool (1) are as requested the highest frequency and the flow decisions of pressure oil to the switching size of oilhole (6).Alternation hydraulic pressure after piston (7) will commutate can be transformed into mechanical energy and be exported by piston rod (8).For the ease of processing, through hole is used in the cylinder hole (11) of piston/cylinder (9), and cylinder nose end lid (10) is a lid with holes, is stretched out by two ends for piston rod (8).Also can make an end as required piston rod (8) is stretched out, the other end seals with stifle.Cylinder nose end lid also has pocketed oil space (12) on (10), makes the buffering lubricating pad of piston (7) back and forth the time.The size of piston (7) and piston rod (8) is to decide according to the oil pressure that uses and the excitation force of requirement, and exciting amplitude (being the stroke of piston rod (8)) is to be satisfied by the distance between design oil circuit mouth as requested.Upper and lower two-part Bolt Connection is an one, and oil circuit all is closed in the inside of valve body (2), and only have a hydraulic oil import " P " and a hydraulic oil of exposing export " O ".

Operation principle of the present utility model is: pressure oil enters the reversing slide valve spool bore by hydraulic fluid port " P ", flows into piston cylinder cylinder chamber pushing piston through oil circuit " A " again and moves right, and the oil of piston opposed end then enters oil sump through oil circuit " C " by oilhole " O ". When piston moves right to when opening oil circuit " B ", pressure oil enters reversing slide valve spool end oil pocket by the piston cylinder chamber through oil circuit " B ", promotion reversing slide valve spool moves right oil circuit " A " is sealed, oil circuit " P " is connected with " C " played the role of changing, the rear pressure oil of commutation enters piston left end chamber pushing piston through oil circuit " C " and is moved to the left. When the reversing slide valve spool moved to right, the oil return of spool right part was returned oil sump through the oil circuit " O " in oil circuit " D " and piston cylinder middle cylinder chamber. When piston moves left to when oil circuit " C " " D " is connected, this moment, pressure oil flowed into reversing slide valve spool right end chamber through oil circuit " P " " C " " D ", the reversing slide valve spool is moved to left " P " " A " opened oil circuit " P " " C " sealing, hydraulic oil flows into piston left end cylinder chamber moves to right piston again. So alternately connect oil circuit " P " " A " and " P " " C ", just make piston do to move back and forth uniformly. Utilization is connected in the throttle valve control excited frequency on the hydraulic oil input oil circuit, utilizes the maximum output of pressure-reducing valve control exciting force.

The utility model can replace mechanically operated elastic link vibrator, inertia vibration generator to be used for all vibrating machines. Mechanically operated elastic link vibrator, inertia vibration generator and electromagnetic exciter can be developed and the field that maybe should not use can not be used. As Hydraulic Station is isolated, import by pipeline, then the utility model can be used for having dust and the explosive occasion of gas to play a part explosion-proof, can be used for having on the engineering machinery and agricultural machinery of hydraulic power supply, as be installed in the operating mechanism of loading machine, excavator, scraper, bull-dozer or on the trench plow tool of agricultural machinery, when the resistance maximum can not overcome, make operating mechanism's vibrational energy reduce resistance 1/3～1/2, to improve mechanical service behaviour etc.

The utility model and inertia vibration generator, elastic link vibrator ratio have the advantages such as exciting force and excited frequency are adjustable, in light weight, volume is little, and integral demounting and renewal part are convenient. Especially it is more convenient some to have been possessed the mechanically use of hydraulic power system, connects oil circuit and gets final product work.

Claims

1, a kind of hydraulic vibration exciter is characterized in that this vibration exciter is made up of hydraulic control automatic reverse and mechanical energy output two-part, and by bolt these two-part is coupled to an integral body.

2, hydraulic vibration exciter as claimed in claim 1 is characterized in that said hydraulic control automatic reverse part is made up of valve core of the spool valve (1), valve body (2), spool end cap (3), and guiding valve valve body (2) two ends seal with spool end caps (3).

3, hydraulic vibration exciter as claimed in claim 1 is characterized in that said mechanical energy output covers (10) by piston (7), piston rod (8), piston/cylinder (9), cylinder nose end and forms.

4, as claim 1,2 described hydraulic vibration exciters, it is characterized in that on the said hydraulic control automatic reverse guiding valve valve body (2) partly spool bore (4) and oilhole (6) being arranged, spool bore (4) is a through hole, oilhole (6) is symmetric arrangement.

5,, it is characterized in that pocketed oil space (5) is arranged on the said spool end cap (3) as claim 1,2 described hydraulic vibration exciters.

6, as claim 1,3 described hydraulic vibration exciters, it is characterized in that on the piston/cylinder (9) of said mechanical energy output cylinder hole (11) being arranged, cylinder hole (11) are through hole.

7,, it is characterized in that on the said cylinder nose end lid (10) pocketed oil space (12) being arranged as claim 1,3 described hydraulic vibration exciters.