CN2361870Y

CN2361870Y - Plunger hydraulic press

Info

Publication number: CN2361870Y
Application number: CN 98246373
Authority: CN
Inventors: 江细清
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-11-13
Filing date: 1998-11-13
Publication date: 2000-02-02
Anticipated expiration: 2008-11-13

Abstract

The utility model discloses a plunger hydraulic press. The utility model is characterized in that the pump body of a plunger pump is provided with an oil inlet. One end of the oil inlet is arranged on the pump body of the plunger pump, and the other end opens onto the slot of the plunger. An oil outlet is connected with an oil outlet of a box body in a mouth-to-mouth mode. A plunger of the plunger pump enters the box body through a plunger hole arranged at the box body, and a main spindle is arranged in the box body through two locating bearings and cooperated with the plunger in the box body. Because the plunger pump is combined with the box body into a whole, the utility model has simpler structure and more convenient disassembly, assembly and maintenance. Because of the adoption of the plunger pump, the service life is longer than that of a gear pump and the cost is lower than that of the gear pump. The plunger hydraulic press can be widely used in the hydraulic system of farm vehicles, such as tricycles, quadricycles, etc.

Description

A kind of plunger hydraulic machine

The utility model belongs to fluid pressure actuator, particularly a kind of plunger hydraulic machine.

The hydraulic system of existing three-wheel, four-wheel agricultural vehicle is generally used gear pump or plunger pump, but uses gear pump that following problem is arranged: 1. because gear pump turns round continuously, make that gear pump inter deterioration gap is big, thereby shorten working life.2. running for a long time, hydraulic oil produces the desaturation phenomenon when high temperature, and build-up of pressure does not increase, and has reduced working efficiency.3. high temperature oil makes seal ring easily aging, produces the phenomenon of oil impregnate, leakage of oil; And use plunger pump structure, be that the plunger of plunger pump is contained in the gearbox, oil pipe, plunger pump, fuel tank are installed separately separately, become separate structure, need many joints between them, oil pipe connects, make structure not compact like this, and joint, oil pipe are too much, cause the cost height, and leakage of oil hidden danger strengthens.

The purpose of this utility model is to provide a kind of plunger pump liquid press that can overcome the existing existing problem of agricultural vehicle hydraulic system, and it is that collection casing, plunger pump are the structure of one.

The utility model is to realize like this, it is by belt pulley, main shaft, casing, compositions such as plunger pump, the main shaft that belt pulley is housed enters casing by the positioning bearing of opening in the spindle hole on casing, and another positioning bearing is installed on the bearing stiffening rib of casing, the former oil inlet hole cancellation of plunger pump, have oil inlet hole on the pump housing of stake plug pump, one end in this hole is opened on the pump housing of plunger pump, and the other end leads to the groove position of plunger, and casing also has plunger hole, oil outlet, the clutch hole, the plunger of plunger pump enters casing by plunger hole, and trip(ping) lever enters casing by the clutch hole, the oil inlet hole counterpart of oil outlet and plunger pump is joined, plunger pump is fixed on the casing by fixed block, and the working end of main shaft is an eccentric structure, and drive bearing is housed, drive bearing matches with the operative end surface of plunger, and mounting bracket is arranged on the casing.The plunger center line of plunger pump and the center line of main shaft are perpendicular, and on same plane.In the spindle hole on the casing oil sealing sealing is arranged.Casing links to each other by Sealing with plunger pump.

When work, clutch handle Rotate 180 degree is in running order, outer power acts on belt pulley by belt, and the drive main spindle running is in the middle of the running, drive bearing on the main shaft and plunger produce interaction force, hydraulic oil in the fuel tank is owing to the oil inlet hole that advances past of plunger sucks in the plunger pump, and under the control of handling valve rod, the high pressure that hydraulic oil produced is by the oil outlet output of plunger pump, produce rated power, to other hydraulic pressure installation work done.When not working, clutch handle is toward opposite direction Rotate 180 degree, and trip(ping) lever forces piston spring to be in the compressive state, and the drive bearing of main shaft does not contact and dallies with plunger, and hydraulic oil can't enter plunger pump, and whole plunger pump quits work.

The utility model is owing to adopted plunger pump directly to be connected with casing, the former oil inlet hole cancellation of plunger pump, and be changed by out directly relative interface of oil inlet hole on the pump housing and fuel tank oil outlet, do not need other oil distributing pipe, fuel tank and plunger pump are integrated, and design has mounting bracket on the fuel tank, so it is simple in structure, assembling is easy, and dismounting safeguards that the separate structure of installing separately than each parts is more convenient.Because plunger to-and-fro motion friction is little, so heat production seldom, oily Wen Buhui height has prevented oily desaturation phenomenon, has significantly reduced because of the warm too high aging hidden danger of seal ring that produces of oil.

Below in conjunction with drawings and Examples the utility model is further described.

Fig. 1 is the utility model structure one embodiment's a schematic representation.

Fig. 2 is A-A face sectional drawing of Fig. 1.

Fig. 3 is this embodiment's a left side view.

Fig. 4 is B-B face sectional drawing of Fig. 2.

Belt pulley 1, main shaft 2, casing 3, plunger pump 4, oil sealing 5, Sealing 6, hexagonal screw rod 7, positioning bearing 201, positioning bearing 202, drive bearing 203, bearing stiffening rib 301, plunger hole 302, oil outlet 303, clutch hole 304, mounting bracket 305, spindle hole 306, oil inlet hole 401, plunger 402, groove position 4021, pressure spring 403, trip(ping) lever 404, clutch handle 405 is handled valve rod 406.

In the present embodiment, comprise belt pulley 1, main shaft 2, casing 3, plunger pump 4, the main shaft 2 that belt pulley 1 is housed enters casing 3 by the positioning bearing of opening in the spindle hole 306 on casing 3 201, another positioning bearing 202 is installed on the bearing stiffening rib 301 of casing 3, the former oil inlet hole cancellation of plunger pump 4, have oil inlet hole 401 on the pump housing of stake plug pump 4, one end in this hole is opened on plunges pump body, and the other end leads to the groove position 4021 of plunger 402, also has plunger hole 302 on the casing 3, oil outlet 303, clutch hole 304, the plunger 402 of plunger pump 4 enters casing 3 by plunger hole 302, and trip(ping) lever 404 enters casing 3 by clutch hole 304, oil outlet 303 joins with oil inlet hole 401 counterparts of plunger pump 4, plunger pump 4 is fixed on the casing 3 by fixed block, and the working end of main shaft 2 is eccentric structures, and drive bearing 203 is housed, drive bearing 203 matches with the operative end surface of plunger 402, and design has mounting bracket 305 on the casing 3.The plunger center line of plunger pump 4 and the center line of main shaft 2 are perpendicular, and on same plane.In the present embodiment, inside and outside two-layer outside framework oil seal 5 is arranged in the spindle hole 306 on the casing 3, and be to link to each other between casing 3 and the plunger pump with rubber cushion oil sealing 6, fastening by hexagonal screw rod 7 as fastening piece.

When work, clutch handle 405 Rotate 180 degree make it in running order, and trip(ping) lever 404 loosens drive bearing 203 effect of matching that pressure spring 403 makes plunger 402 and main shaft 2.Main shaft 2 turns round under the driving of belt pulley 1, eccentric structure because of main shaft 2, make plunger 402 under the driving under the drive bearing 203 of main shaft 2, move back and forth, in the reciprocating process, hydraulic oil in the casing 3 just constantly enters the oil inlet hole 401 of plunger pump 4 by the oil outlet 303 of casing, again by plunger pump 4 output high pressure oils.When not needing work, clutch handle 405 is the Rotate 180 degree round about, forces plunger 402 to break away from the drive bearing 202 of main shafts 2 by trip(ping) lever 404, and like this, the rotation of main shaft 2 can not make plunger 402 to-and-fro motion, makes the plunger air pump inoperative.

Claims

1, a kind of plunger hydraulic machine, comprise belt pulley (1), main shaft (2), casing (3), plunger pump (4), the main shaft (2) that it is characterized in that being equipped with belt pulley (1) enters casing (3) by the positioning bearing of opening in the spindle hole (306) on casing (3) (201), another positioning bearing (202) is installed on the bearing stiffening rib (301) of casing (3), the former oil inlet hole cancellation of plunger pump (4), have oil inlet hole (401) on the pump housing of plunger pump (4), one end in this hole is opened on the pump housing of plunger pump, the other end leads to the groove position (4021) of plunger (402), casing (3) also has plunger hole (302), oil outlet (303), clutch hole (304), the plunger (402) of plunger pump (4) enters casing (3) by plunger hole (302), trip(ping) lever (404) enters casing (3) by clutch hole (304), oil outlet (303) joins with oil inlet hole (401) counterpart of plunger pump (4), plunger pump (4) is fixed on the casing (3) by fixed block, the working end of main shaft (2) is an eccentric structure, and drive bearing (203) is housed, drive bearing (203) matches with the operative end surface of plunger (402), and mounting bracket (305) is arranged on the casing (3).

2, a kind of plunger hydraulic machine as claimed in claim 1 is characterized in that the center of plunger (402) center line of plunger pump (4) and main shaft (2) is perpendicular, and on same plane.

3, a kind of plunger hydraulic machine as claimed in claim 1 is characterized in that having in the spindle hole (306) on the casing (3) oil sealing (5) sealing.

4, a kind of plunger hydraulic machine as claimed in claim 1 is characterized in that casing (3) links to each other by Sealing (6) with plunger pump (4).