CN213511064U

CN213511064U - Novel hydraulic pump

Info

Publication number: CN213511064U
Application number: CN202022556210.2U
Authority: CN
Inventors: 董永才
Original assignee: Langfang Gaode Machinery Manufacturing Co ltd
Current assignee: Langfang Gaode Machinery Manufacturing Co ltd
Priority date: 2020-11-06
Filing date: 2020-11-06
Publication date: 2021-06-22
Anticipated expiration: 2030-11-06

Abstract

The utility model discloses a novel hydraulic pump, including the casing, be equipped with mounting groove and hydraulic pressure chamber in the casing, be equipped with first piston hole on the inner wall in hydraulic pressure chamber, the upper end of first piston hole is equipped with the recess, and first piston hole endotheca is equipped with the piston rod, and the screwed pipe is installed to the oil-out of recess, installs the oil collection kettle on the screwed pipe. The lower end of the second piston hole is blocked by rotating the threaded rod to drive the circular plug, so that the plunger in the blocked second piston hole cannot influence the pressure in the hydraulic cavity, the number of the second piston holes can be increased or reduced as required, the pressure in the hydraulic cavity can be adjusted, the operation is convenient, and the adjustment is simple; the resistance that overcomes protection spring through the piston rod immigrates flexible inslot for hydraulic oil gets into and retrieves in the collection oilcan, not only can realize the overload protection of oil circuit in the hydraulic pump, can retrieve overloaded hydraulic oil moreover, reduces the waste of hydraulic oil.

Description

Novel hydraulic pump

Technical Field

The utility model belongs to the technical field of the hydraulic pump, specifically be a novel hydraulic pump.

Background

The hydraulic pump is a power element of a hydraulic system, and is an element which is driven by an engine or an electric motor, sucks oil from a hydraulic oil tank, forms pressure oil, discharges the pressure oil and sends the pressure oil to an execution element. The hydraulic pump is divided into a gear pump, a plunger pump, a vane pump and a screw pump according to the structure.

At present, the inefficiency of current hydraulic pump, when needs pressure regulation, need to change the motor of different power, it is more troublesome to, along with hydraulic pump's operation, its inside temperature risees for the pressure in the oil circuit increases, the condition that transships easily appears and lead to the hydraulic pump to damage.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel hydraulic pump to solve current hydraulic pump inefficiency, when needs regulated pressure, need change the motor of different power, it is more troublesome, and, along with hydraulic pump's operation, its inside temperature risees, makes the pressure increase in the oil circuit, appears transshipping easily and leads to the problem of the condition that the hydraulic pump damaged.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a novel hydraulic pump, which comprises a housin, be equipped with mounting groove and hydraulic pressure chamber in the casing, be equipped with first piston hole on the inner wall in hydraulic pressure chamber, the upper end in first piston hole is equipped with the recess, first piston hole endotheca is equipped with the piston rod, the screwed pipe is installed to the oil-out of recess, install the oil collection kettle on the screwed pipe, be equipped with the screw thread on the hu zui of oil collection kettle for the oil collection kettle passes through the screw thread and installs on the screwed pipe, easy to assemble, dismantlement.

Preferably, the fixing rod is installed in the groove, the telescopic groove is formed in the fixing rod, the piston rod sleeve is arranged in the telescopic groove, the protection spring is installed between the piston rod and the telescopic groove, two ends of the protection spring are installed on the inner walls of the piston rod and the telescopic groove through screw threads respectively, and overload protection is performed through the elastic force of the protection spring and the gravity of the piston rod.

Preferably, a transmission shaft is installed in the installation groove, an eccentric wheel is installed on the transmission shaft, and the transmission shaft drives the eccentric wheel to rotate, so that the eccentric wheel presses the circular plate to descend, and the plungers can be controlled to descend together.

Preferably, be equipped with a plurality of second piston holes on the inner wall in hydraulic pressure chamber, second piston hole endotheca is equipped with the plunger, and the circular slab is installed to the upper end of plunger, and second piston hole and plunger are circular structure, and the surface of plunger hugs closely on the inner wall in second piston hole, and a plurality of plungers align to grid on the circumference of circular slab.

Preferably, install the threaded rod on the casing, install circular stopper on the threaded rod, install reset spring on the circular stopper, reset spring's upper end is installed on the plunger, the threaded rod, circular stopper, second piston hole three's quantity equals, and the position corresponds each other, the threaded rod passes through the circular stopper of screw promotion and rises, the lower extreme in second piston hole is plugged up to circular stopper, make the unable pressure that influences the hydraulic pressure intracavity of the downthehole plunger of second piston that is plugged up, thereby can increase or reduce the quantity in second piston hole as required, realize the pressure regulation of hydraulic pressure intracavity portion.

Compared with the prior art, the beneficial effects of the utility model are that: the lower end of the second piston hole is blocked by rotating the threaded rod to drive the circular plug, so that the plunger in the blocked second piston hole cannot influence the pressure in the hydraulic cavity, the number of the second piston holes can be increased or reduced as required, the pressure in the hydraulic cavity can be adjusted, the operation is convenient, and the adjustment is simple; the resistance that overcomes protection spring through the piston rod immigrates flexible inslot for hydraulic oil gets into and retrieves in the collection oilcan, not only can realize the overload protection of oil circuit in the hydraulic pump, can retrieve overloaded hydraulic oil moreover, reduces the waste of hydraulic oil.

Drawings

FIG. 1 is a front cross-sectional view of the overall structure of the present invention;

FIG. 2 is a front cross-sectional view of the fixing rod of the present invention;

fig. 3 is a plan view of the circular plate of the present invention.

In the figure: the device comprises a shell 1, a mounting groove 2, a hydraulic cavity 3, a first piston hole 4, a groove 5, a piston rod 6, a threaded pipe 7, an oil collection pot 8, a fixing rod 9, a telescopic groove 10, a protective spring 11, a transmission shaft 12, an eccentric wheel 13, a second piston hole 14, a plunger 15, a circular plate 16, a threaded rod 17, a circular plug 18 and a return spring 19.

Detailed Description

Please refer to fig. 1, a novel hydraulic pump, which comprises a housing 1, a mounting groove 2 and a hydraulic chamber 3 are arranged in the housing 1, a first piston hole 4 is arranged on the inner wall of the hydraulic chamber 3, a groove 5 is arranged at the upper end of the first piston hole 4, a piston rod 6 is arranged in the first piston hole 4 in a sleeved manner, the first piston hole 4 and the piston rod 6 are identical in shape, the surface of the piston rod 6 is tightly attached to the inner wall of the first piston hole 4, the sealing effect between the first piston hole 4 and the piston rod 6 is ensured, a threaded pipe 7 is installed at the oil outlet of the groove 5 under the condition of avoiding oil leakage through a screw, an oil collection pot 8 is installed on the threaded pipe 7, threads are arranged on a spout of the oil collection pot 8, so that the oil collection pot 8 is installed on the threaded pipe 7 through threads.

Referring to fig. 1 and 2, a fixing rod 9 is installed in the groove 5 through a screw, a telescopic groove 10 is installed in the fixing rod 9, the piston rod 6 is sleeved in the telescopic groove 10, a protection spring 11 is installed between the piston rod 6 and the telescopic groove 10, two ends of the protection spring 11 are installed on the inner walls of the piston rod 6 and the telescopic groove 10 through screw threads respectively, and overload protection is performed through the elastic force of the protection spring 11 and the gravity of the piston rod 6.

Referring to fig. 1, a transmission shaft 12 is installed in the installation groove 2 through a bearing, an eccentric wheel 13 is installed on the transmission shaft 12 through a screw, the transmission shaft 12 drives the eccentric wheel 13 to rotate, so that the eccentric wheel 13 presses the circular plate 16 to descend, and the plurality of plungers 15 can be controlled to descend together.

Referring to fig. 1 and 3, a plurality of second piston holes 14 are formed in the inner wall of the hydraulic chamber 3, a plunger 15 is sleeved in the second piston holes 14, a circular plate 16 is mounted at the upper end of the plunger 15 through a screw, the second piston holes 14 and the plunger 15 are both circular structures, the surface of the plunger 15 is tightly attached to the inner wall of the second piston hole 14, and the plurality of plungers 15 are uniformly arranged on the circumference of the circular plate 16.

Referring to fig. 1, a threaded rod 17 is mounted on a housing 1 through a sealing bearing, a circular plug 18 is mounted on the threaded rod 17 through threads, a return spring 19 is mounted on the circular plug 18 through a screw, the upper end of the return spring 19 is mounted on a plunger 15 through a screw, the threaded rod 17, the circular plug 18 and the second piston hole 14 are equal in number and correspond in position to each other, the threaded rod 17 pushes the circular plug 18 to ascend through threads, the circular plug 18 blocks the lower end of the second piston hole 14, so that the plunger 15 in the blocked second piston hole 14 cannot influence the pressure in the hydraulic chamber 3, the number of the second piston holes 14 can be increased or decreased as required, and the pressure regulation inside the hydraulic chamber 3 is realized.

The working principle of the scheme is as follows: when the hydraulic oil pressure regulating device is used, the transmission shaft 12 is driven to rotate by external power, the transmission shaft 12 drives the eccentric wheel 13 to rotate, the eccentric wheel 13 pushes the plunger 15 to move up and down in the second piston hole 14 through the circular plate 16, so that the hydraulic oil in the hydraulic cavity 3 is pressurized, the threaded rod 17 pushes the circular plug 18 to ascend through threads by rotating the threaded rod 17, the circular plug 18 blocks the lower end of the second piston hole 14, the plunger 15 in the blocked second piston hole 14 cannot influence the pressure in the hydraulic cavity 3, the number of the second piston holes 14 can be increased or reduced as required, the pressure regulation in the hydraulic cavity 3 is realized, the operation is convenient, the regulation is simple, in addition, when the pressure in the hydraulic cavity 3 is overlarge, the hydraulic oil can push the piston rod 6 to ascend, when the pressure in the hydraulic cavity 3 is overloaded, the piston rod 6 is separated from the first piston hole 4, so that the hydraulic oil enters the oil collecting pot 8 to, not only can realize the overload protection of oil circuit in the hydraulic pump, can retrieve overloaded hydraulic oil moreover, reduce the waste of hydraulic oil.

Claims

1. A novel hydraulic pump comprises a shell (1), and is characterized in that: be equipped with mounting groove (2) and hydraulic pressure chamber (3) in casing (1), be equipped with first piston hole (4) on the inner wall in hydraulic pressure chamber (3), the upper end of first piston hole (4) is equipped with recess (5), first piston hole (4) endotheca is equipped with piston rod (6), screwed pipe (7) are installed to the oil-out of recess (5), install collection oilcan (8) on screwed pipe (7).

2. The new hydraulic pump of claim 1, wherein: install dead lever (9) in recess (5), be equipped with flexible groove (10) in dead lever (9), piston rod (6) cover is established in flexible groove (10), installs between piston rod (6) and flexible groove (10) protection spring (11).

3. The new hydraulic pump of claim 1, wherein: a transmission shaft (12) is installed in the installation groove (2), and an eccentric wheel (13) is installed on the transmission shaft (12).

4. The new hydraulic pump of claim 1, wherein: the hydraulic pressure chamber is characterized in that a plurality of second piston holes (14) are formed in the inner wall of the hydraulic pressure chamber (3), a plunger (15) is sleeved in each second piston hole (14), and a circular plate (16) is installed at the upper end of each plunger (15).

5. The new hydraulic pump of claim 1, wherein: install threaded rod (17) on casing (1), install circular stopper (18) on threaded rod (17), install reset spring (19) on circular stopper (18), install on plunger (15) return spring's (19) upper end.