CN202900558U

CN202900558U - Inclined-shaft type ration plunger pump

Info

Publication number: CN202900558U
Application number: CN 201220631257
Authority: CN
Inventors: 梁宏喜; 雷和练; 何利; 王康
Original assignee: Chongqing Hongjiang Machinery Co Ltd
Current assignee: Chongqing Hongjiang Machinery Co Ltd
Priority date: 2012-11-26
Filing date: 2012-11-26
Publication date: 2013-04-24
Anticipated expiration: 2022-11-26

Abstract

The utility model discloses an inclined-shaft type ration plunger pump. According to the inclined-shaft type ration plunger pump, a sealed working space is formed by a shell body, an input shaft, a cylinder body, plungers and an end cover. In the shell body, a timing gear is fixed on the input shaft through a positioning pin. The timing gear is meshed with a gleason spiral bevel gear on the end face of the cylinder body. Rotating speed of the input shaft is transmitted to the cylinder body through the timing gear to drive the cylinder body to rotate around the end cover. Ball sockets are arranged at the top end of the input shaft in a circumferential mode, wherein the number of the ball sockets is the same as the number of the plungers. The ball sockets serve as plunger connection discs. The plungers are arranged in the plunger holes distributed in the cylinder body in a circumferential mode. One end of each plunger is a ball head matched with the corresponding ball socket at the top end of the input shaft. Three piston rings are arranged at the other end of each plunger, wherein the three piston rings are placed in an overlapping mode and are used for sealing. The end cover is integrated with a valve plate. The inclined-shaft type ration plunger pump has the advantages of being high in rotating speed, low in noise, large in heavy power, small in abrasion, small in leakage, small in size and light in weight.

Description

A kind of clino-axis type quantitative plunger pump

Technical field

The utility model belongs to the hydraulics field, is specifically related to the clino-axis type quantitative plunger pump, is widely used in the association areas such as freighter hoist, refuse collection vehicle, timber cranes, concrete mixer and similar vehicle.

Background technique

In modern hydraulic transmission, plunger pump is to use one of the widest Hydraulic power units, and from the heavy press more than ten thousand tons to small-sized hydraulic tools, the stationary machine of using from general industry is to traveling vehicle, from civilian machinery to military armament systems, all used widely plunger pump.Oil hydraulic pump is equivalent to " heart " of hydraulic system as the power source of hydraulic system, and its Performance And Reliability has determined the performance of whole hydraulic system to a great extent.Because the axial plunger pump structure in the oil hydraulic pump is relatively simple, low cost of manufacture, volume are little, lightweight, realize stepless variable easily, so axial piston pump is current the most widely used plunger pump pattern.

Summary of the invention

The purpose of this utility model is the needs for prior art, provides that a kind of rotating speed is high, noise is little, heavy power is large, wearing and tearing are little, leaks less, little, the lightweight clino-axis type quantitative plunger pump of volume.

The technical solution adopted in the utility model is as follows:

A kind of clino-axis type quantitative plunger pump, it forms the seal operation space by housing, input shaft, cylinder body, plunger and end cap.In housing, be fixed with timing gear by locating stud on the input shaft, the spiral bevel gear engagement of timing gear and cylinder body end face is rotated around end cap thereby the rotating speed of input shaft passes to cylinder body drive cylinder body by timing gear; There is the ball-and-socket identical with plunger quantity on the top of described input shaft by circle distribution, as the plunger land, described plunger is installed in the plunger hole of circle distribution of cylinder body, plunger one end is that bulb cooperates with the ball-and-socket on input shaft top, plunger the other end cover has the piston ring of three overlapping placements, seals; Described end cap and thrust plate are made of one.

Advantage of the present utility model is as follows:

1, the clino-axis type quantitative plunger pump drives the cylinder body rotation by timing gear, and timing gear adopts spiral bevel gear, and rotating speed is high, noise is little, adopts bevel gear drive, and input shaft and cylinder body angle are larger, and angle can reach 45 °, and it is large that heavy power ratio is compared other plunger pumps.

2, clino-axis type quantitative plunger pump and plunger cooperate with ball-and-socket by bulb with input shaft, when plunger and input shaft angle during less than a certain particular value, plunger can be packed into or be broken away from ball-and-socket, when plunger and input shaft angle during greater than a certain particular value, plunger ball is transfused to the ball-and-socket locking of axle and connects as one.Input shaft and plunger connection diagram are shown in Fig. 2 A and Fig. 2 B.Plunger adopts the bulb Placement, can make the rotating speed of pump reach very high.

3, adopt the piston ring packing of three overlapping placements between clino-axis type quantitative plunger pump plunger and the cylinder body upper prop consent, the gap between plunger and the plunger hole can be very large, reduced the wearing and tearing between plunger and the plunger hole, and leakage rate seldom.

4, the housing of pump adopts aluminium alloy castings, and intensity is good, quality is light; Thrust plate and end cap are made of one, and make whole pump structure compacter.

On the whole, the utlity model has that little, the heavy power of rotating speed height, noise is large, wearing and tearing are little, leak less, little, the lightweight advantage of volume.

Description of drawings

Fig. 1 is clino-axis type quantitative plunger pump structural drawing

Fig. 2 A and Fig. 2 B are plunger and input shaft connection diagram, and Fig. 2 A is that plunger does not have locking, and Fig. 2 B is the plunger locking;

Fig. 3 is clino-axis type quantitative plunger pump outline drawing.

Among the figure: 1. lining 2. shaft seals 3. pads 4. rivets 5. plug screws 6. end caps 7. O-ring seals 8. piston rings 9. plungers 10 cylinder bodies 11 springs 12. cylinder bodies support 13. locating studs, 14. timing gears, 15. tapered roller bearings, 16. housings, 17. deep groove ball bearings, 18. input shafts

Embodiment

Referring to Fig. 1, Fig. 2 A and Fig. 2 B, this clino-axis type quantitative plunger pump delivery 20～40 ml/r, rated pressure is 35MPa, is comprised of input shaft 18, housing 16, timing gear 14, bulb 13, spring 11, cylinder body 10, plunger 9, piston ring 8, end cap 6, shaft seal 3 and other parts.It forms the seal operation volume by housing 16, input shaft 18, cylinder body 10, plunger 9 and end cap 6.In housing 16, input shaft 18 is by deep groove ball bearing 17 and tapered roller bearing 15 and housing 16 assemblings.Timing gear 14 is fixed on the input shaft 18 by locating stud 13.Timing gear 14 meshes with the spiral bevel gear of cylinder body 10 end faces, rotates around end cap thereby the rotating speed of input shaft passes to cylinder body drive cylinder body by timing gear.There is the ball-and-socket identical with plunger quantity on the top of input shaft 18 by circle distribution, as the plunger land, plunger is installed in the plunger hole of circle distribution of cylinder body, plunger one end is bulb 13, cooperate with the ball-and-socket on input shaft top, plunger the other end cover has the piston of three overlapping placements, and 8, and seal between the plunger hole.End cap 6 is made of one with thrust plate.

The maximum difference of this clino-axis type quantitative plunger pump and other types clino-axis type quantitative plunger pump: adopt the curved-tooth bevel gear wheel set to carry out transmission, have the characteristics such as rotating speed height, noise is little, the weight power ratio is large; Adopt the piston ring packing of three overlapping placements between plunger and the plunger hole, the gap between plunger and the plunger hole can be very large, reduced the wearing and tearing between plunger and the plunger hole, and leakage rate seldom; Thrust plate and end cap are made an integral body, more compact structure; Pump case adopts aluminium alloy structure, and intensity is good, lightweight, meets the light development trend of present oil hydraulic pump.

Fig. 3 is the outline drawing of described clino-axis type quantitative plunger pump, and profile of the present utility model is simple, and output shaft adopts spline joint to install, and top end cap 6 is pressed on the housing 6 by fastening screw trip bolt, and end cap is provided with oil inlet and outlet.

Below in conjunction with description of drawings working principle of the present utility model.

Timing gear 14 rotates under input shaft 18 drives, and timing gear 14 drives cylinder body 10 and rotates, and cylinder body 10 rotates on end cap 6, by spring 11 cylinder body and end cap 6 is fit together, and the plunger 9 that promotes to be distributed in cylinder body 10 plunger holes produces to-and-fro motion.When plunger 9 was descending, the oil suction chamber oil suction by above the end cap 6 realized this pump oil-absorbing process; When plunger is up, realize the oil extraction process by the oil pocket that goes out above the end cap 6.Input shaft rotates a circle, and every plunger is all finished an oil suction and oil extraction process.When the input shaft sense of rotation changes, by changing the end cap mounting point, be about to ° installation of end cap Rotate 180, just can realize above-mentioned oil suction and oil extraction process, so this pump can satisfy the function of clockwise and anticlockwise work.

Claims

1. a clino-axis type quantitative plunger pump forms the seal operation space by housing, input shaft, cylinder body, plunger and end cap; It is characterized in that: in housing, be fixed with timing gear by locating stud on the input shaft, the spiral bevel gear engagement of timing gear and cylinder body end face is rotated around end cap thereby the rotating speed of input shaft passes to cylinder body drive cylinder body by timing gear; There is the ball-and-socket identical with plunger quantity on the top of described input shaft by circle distribution, as the plunger land, described plunger is installed in the plunger hole of circle distribution of cylinder body, plunger one end is that bulb cooperates with the ball-and-socket on input shaft top, plunger the other end cover has the piston ring of three overlapping placements, seals; Described end cap and thrust plate are made of one.

2. a kind of clino-axis type quantitative plunger pump according to claim 1 is characterized in that: described housing employing aluminium alloy castings.