CN217233951U

CN217233951U - One-way overflow valve of hydraulic walking motor

Info

Publication number: CN217233951U
Application number: CN202123236891.5U
Authority: CN
Inventors: 周衍靖; 张兆
Original assignee: Ningbo Longteng Hydraulic Components Co ltd
Current assignee: Ningbo Hanqi Hydraulic Machinery Co ltd
Priority date: 2021-12-20
Filing date: 2021-12-20
Publication date: 2022-08-19
Anticipated expiration: 2031-12-20

Abstract

The utility model relates to a check valve technical field especially discloses a hydraulic pressure walking motor one-way overflow valve, including overflow valve body and the plug of setting in overflow valve body one end, it is provided with the sliding chamber to run through in the overflow valve body, the one end of keeping away from the plug in the sliding chamber is installed the valve body end cover, sliding chamber inside sliding connection has the case; one end of the plug is connected with a barrel, and a compression cavity communicated with the sliding cavity is arranged in the plug and the barrel in a penetrating manner; and a plug is connected in the compression cavity in a sliding manner, and a compression spring is connected between the plug and the valve core. The utility model provides a hydraulic pressure walking motor one-way overflow valve wherein is provided with adjust knob and end cap, and the convenience is adjusted predetermined pressure value according to actual conditions for walking motor work is more stable, reliable, soft, thereby has guaranteed the whole stability of working life and the hydraulic system of motor.

Description

One-way overflow valve of hydraulic walking motor

Technical Field

The utility model relates to a check valve technical field especially relates to a hydraulic pressure walking motor one-way overflow valve.

Background

In a construction machinery system, a plurality of slewing mechanisms cause great hydraulic impact during starting, braking or sudden reversing due to large upper vehicle rotational inertia when moving. Especially, when the vehicle is stopped suddenly when meeting obstacles in the rotation process, the hydraulic impact is more obvious. Hydraulic shock can cause vibration and noise, or even damage, to the entire hydraulic system and components. In the prior art, people generally adopt hydraulic pressure walking motor overflow valve to monitor the pressure inside the motor during operation, make it can not surpass the overflow valve and set pressure all the time, protect the motor to carry out work under safe pressure.

The overflow valve of the hydraulic walking motor used in the current market is difficult to completely eliminate or absorb hydraulic impact when a system is started or braked, so that the operating performance of the system cannot be further improved, the overflow pressure of the overflow valve is difficult to accurately control, the stability of the use performance of the overflow valve is influenced, and meanwhile, a plurality of defects of poor overflow performance, large impact on the overflow valve, short service life and the like during opening and closing can be caused.

To above problem, the utility model provides a hydraulic pressure walking motor one-way overflow valve.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model aims to solve the problem lie in to above-mentioned prior art not enough, a hydraulic pressure walking motor one-way overflow valve is provided, can solve the hydraulic pressure that used hydraulic pressure walking motor overflow valve in the market is difficult to eliminate completely or the hydraulic shock when absorption system starts or brakes, therefore the operating performance of system can't further be improved, thereby it is difficult to accurate control to lead to overflow valve overflow pressure, influence its stability of performance, the overflow performance is not good when can causing simultaneously to open and close, it is great to self impact, the problem of a great deal of drawbacks such as life is not long.

(II) technical scheme

The utility model provides a technical scheme that above-mentioned technical problem adopted is: a hydraulic walking motor one-way overflow valve comprises an overflow valve body and a plug arranged at one end of the overflow valve body, wherein a sliding cavity penetrates through the overflow valve body, a valve body end cover is arranged at one end, far away from the plug, in the sliding cavity, and a valve core is connected in the sliding cavity in a sliding manner; one end of the plug is connected with a barrel, and a compression cavity communicated with the sliding cavity is arranged in the plug and the barrel in a penetrating manner;

a plug is connected in the compression cavity in a sliding manner, and a compression spring is connected between the plug and the valve core; the outer wall of the screw barrel is provided with external threads, the outer wall of the screw barrel is in threaded connection with an adjusting nut and an adjusting knob, and the adjusting knob can press the plug.

Preferably, one end of the valve core, which faces the end cover of the driving valve body, is provided with a pressure groove, a guide groove is arranged in the pressure groove along the axial direction of the valve core, a drainage hole which is perpendicular to the guide groove is arranged in the valve core in a penetrating manner, and a drainage groove is arranged at the position, which faces the drainage hole, of the outer wall of the valve core;

the side wall of the overflow valve body is provided with a liquid inlet opposite to the position of the drainage groove, and a liquid outlet is arranged at the position, close to the liquid inlet, of the side wall of the overflow valve body.

Preferably, the lateral wall of the overflow valve body is provided with a first drainage channel, the lateral wall of the plug is provided with a second drainage channel, one end of the first drainage channel is communicated with the sliding cavity, the other end of the first drainage channel is communicated with the second drainage channel, and the other end of the second drainage channel is communicated with the compression cavity.

Preferably, a thread groove matched with the external thread is formed in the adjusting knob, and the plug is connected with the plug and extends into the thread groove to be in threaded connection with the adjusting knob.

Preferably, a first limiting block is arranged at one end, facing the compression spring, of the valve core, a second limiting block is arranged at one end, facing the compression spring, of the plug, and the two ends of the compression spring are sleeved on the outer portions of the first limiting block and the second limiting block.

Preferably, the overflow valve body with the junction of plug is provided with first annular, first annular sets up smooth chamber with the meeting department in compression chamber, install first O type circle in the first annular.

Preferably, the overflow valve body with the junction of plug is provided with the second annular, the second annular sets up first drainage channel with the department of meeting of second drainage channel, install second O type circle in the second annular.

(III) advantageous effects

1. The utility model provides a hydraulic pressure walking motor one-way overflow valve wherein is provided with adjust knob and end cap, and the convenience is adjusted predetermined pressure value according to actual conditions for walking motor work is more stable, reliable, soft, thereby has guaranteed the whole stability of working life and the hydraulic system of motor.

2. The utility model provides a hydraulic pressure walking motor one-way overflow valve, wherein before hydraulic pressure walking motor work, can set up the pressure of overflow valve according to actual conditions, at first ensure adjust knob anticlockwise to the state of laxest on the barrel, make compression spring promote the end cap stretch out the barrel and contact with the thread groove, then clockwise adjust knob of slowly screwing, adjust knob promotes end cap extrusion compression spring and removes towards the compression intracavity, and then promote the case, make the pressure that the case receives slowly rise, when pressure rises to the default, stop rotating, and it is spacing to carry out the position to adjust knob to rotatory to adjust knob department, the operation is built weiyi convenience.

3. The utility model provides a hydraulic pressure walking motor one-way overflow valve, wherein when hydraulic system of hydraulic pressure walking motor began working, come oil by the inlet, oil passes through the drainage groove and arrives in the drainage hole, arrives guide way and pressure tank to come to exert pressure to the case, when pressure acts on the case, when exceeding compression spring's pressure and the pressure that adjust knob applyed, the case was promoted and is removed towards compression spring direction, and the drainage groove is linked together with the liquid outlet gradually at this moment, and hydraulic oil flows out by the liquid outlet, accomplishes system off-load; meanwhile, the drainage groove on the other side is gradually communicated with the inlet of the first drainage channel, and hydraulic oil flows to the first drainage channel from the drainage hole and the drainage groove and then flows into the compression cavity through the second drainage channel; along with the increase of hydraulic oil in the compression cavity, the pressure in the compression cavity is increased, so that the valve core is pushed to move towards the end cover of the valve body, the liquid outlet and the inlet of the first drainage channel are limited and blocked by the side wall of the valve core again, the valve is closed, and unloading buffering is completed.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic diagram of the overall structure of the present invention.

Wherein: 1 overflow valve body, 11 sliding cavities, 12 liquid inlets, 13 liquid outlets, 14 first drainage channels, 15 first ring grooves, 16 first O-shaped rings, 17 second ring grooves, 18 second O-shaped rings, 2 plug bolts, 21 barrel bolts, 22 compression cavities, 23 plug bolts, 230 second limiting blocks, 24 compression springs, 25 external threads, 26 adjusting nuts, 27 adjusting knobs, 28 second drainage channels, 29 thread grooves, 3 valve body end covers, 4 valve cores, 41 pressure grooves, 42 guide grooves, 43 drainage holes, 44 drainage grooves and 45 first limiting blocks.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

Referring to fig. 1-2, a hydraulic walking motor one-way overflow valve comprises an overflow valve body 1 and a plug 2 arranged at one end of the overflow valve body 1, wherein a sliding cavity 11 penetrates through the overflow valve body 1, a valve body end cover 3 is arranged at one end, far away from the plug 2, in the sliding cavity 11, and a valve core 4 is connected in the sliding cavity 11 in a sliding manner; one end of the plug 2 is connected with a plug barrel 21, and a compression cavity 22 communicated with the sliding cavity 11 is arranged in the plug 2 and the plug barrel 21 in a penetrating manner; wherein, the overflow valve body 1, the sliding cavity 11, the plug 2, the barrel 21 and the compression cavity 22 are coaxially arranged.

A plug 23 is connected in the compression cavity 22 in a sliding manner, and a compression spring 24 is connected between the plug 23 and the valve core 4; a first limiting block 45 is arranged at one end, facing the compression spring 24, of the valve core 4, a second limiting block 230 is arranged at one end, facing the compression spring 24, of the plug 23, and two ends of the compression spring 24 are sleeved on the outer portions of the first limiting block 45 and the second limiting block 230; wherein, this structure is favorable for making the compression spring 24 more stable in operation, and is also favorable for strengthening the connection between the valve core 4, the plug 23 and the compression spring 24.

The outer wall of the screw cylinder 21 is provided with an external thread 25, the outer wall of the screw cylinder 21 is in threaded connection with an adjusting nut 26 and an adjusting knob 27, and the adjusting knob 27 can press the plug 23.

The adjusting knob 27 is internally provided with a thread groove 29 matched with the external thread 25, and the plug 2 is connected with the plug 23 and extends into the thread groove 29 to be in threaded connection with the adjusting knob 27.

Wherein, the adjusting knob 27 is screwed slowly, the adjusting knob 27 pushes the plug 23 to extrude the compression spring 24 to move towards the compression cavity 22, and then the valve core 4 is pushed, so that the pressure borne by the valve core 4 rises slowly, when the pressure rises to a preset value, the rotation is stopped, and the adjusting nut 26 is rotated to the adjusting knob 27 to limit the position of the adjusting knob 27; the special arrangement of the structure is beneficial to setting the pressure according to the actual situation by a user.

A pressure groove 41 is formed in one end, opposite to the end cover 3 for driving the valve body, of the valve core 4, a guide groove 42 is formed in the pressure groove 41 along the axial direction of the valve core 4, a drainage hole 43 perpendicular to the guide groove 42 penetrates through the valve core 4, and a drainage groove 44 is formed in the position, opposite to the drainage hole 43, of the outer wall of the valve core 4;

a liquid inlet 12 is arranged at the position, opposite to the drainage groove 44, of the side wall of the overflow valve body 1, and a liquid outlet 13 is arranged at the position, close to the liquid inlet 12, of the side wall of the overflow valve body 1; when a hydraulic system of the hydraulic walking motor starts to work, oil comes from the liquid inlet 12, flows into the drainage hole 43 through the drainage groove 44 and flows into the guide groove 42 and the pressure groove 41, and the special structures of the pressure groove 41 and the guide groove 42 facilitate the application of pressure to the valve core 4 when the hydraulic oil is accumulated to a certain degree.

The side wall of the overflow valve body 1 is provided with a first drainage channel 14, the side wall of the plug 2 is provided with a second drainage channel 28, one end of the first drainage channel 14 is communicated with the sliding cavity 11, the other end of the first drainage channel 14 is communicated with the second drainage channel 28, and the other end of the second drainage channel 28 is communicated with the compression cavity 22.

The overflow valve body 1 with the junction of plug 2 is provided with first annular 15, first annular 15 sets up sliding chamber 11 with the department of meeting of compression chamber 22, install first O type circle 16 in the first annular 15.

The junction of overflow valve body 1 with plug 2 is provided with second annular 17, second annular 17 sets up first drainage channel 14 with the department of meeting of second drainage channel 28, install second O type circle 18 in the second annular 17.

Referring to fig. 2, before the hydraulic walking motor works, the pressure of the overflow valve can be set according to actual conditions, firstly, the adjusting knob 27 is ensured to be in a most relaxed state on the screw cylinder 21 in a counterclockwise direction, so that the compression spring 24 pushes the plug 23 to extend out of the screw cylinder 21 and contact with the thread groove 29, then the adjusting knob 27 is screwed clockwise and slowly, the adjusting knob 27 pushes the plug 23 to extrude the compression spring 24 to move towards the compression cavity 22, further the valve core 4 is pushed, the pressure borne by the valve core 4 rises slowly, when the pressure rises to a preset value, the rotation is stopped, and the adjusting nut 26 is rotated to the adjusting knob 27 to limit the position of the adjusting knob 27; at this time, the liquid inlet 12 is communicated with the drainage groove 44, and the liquid outlet 13 and the inlet of the first drainage channel 14 are limited and blocked by the side wall of the valve core 4.

When the hydraulic system of the hydraulic walking motor starts to work in specific work, oil is fed from the liquid inlet 12, flows into the drainage hole 43 through the drainage groove 44 and enters the guide groove 42 and the pressure groove 41 to exert pressure on the valve core 4, when the pressure acts on the valve core 4 and exceeds the pressure of the compression spring 24 and the pressure exerted by the adjusting knob 27, the valve core 4 is pushed to move towards the compression spring 24, at the moment, the drainage groove 44 is gradually communicated with the liquid outlet 13, hydraulic oil flows out from the liquid outlet 13, and unloading of the system is completed; meanwhile, the drainage groove 44 on the other side is gradually communicated with the inlet of the first drainage channel 14, and the hydraulic oil flows to the first drainage channel 14 through the drainage hole 43 and the drainage groove 44 and then flows into the compression cavity 22 through the second drainage channel 28; along with the increase of hydraulic oil in the compression cavity 22, the pressure in the compression cavity 22 increases, and further the valve core 4 is pushed to move towards the valve body end cover 3, so that the liquid outlet 13 and the inlet of the first drainage channel 14 are limited and blocked by the side wall of the valve core 4 again, the valve is closed, and unloading buffering is completed.

The utility model discloses in be provided with adjust knob 27 and end cap 23, the convenience is adjusted predetermined pressure value according to actual conditions for walking motor work is more stable, reliable, soft, thereby has guaranteed the whole stability of working life and the hydraulic system of motor.

The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a hydraulic pressure walking motor one-way overflow valve, includes overflow valve body (1) and sets up plug (2) of overflow valve body (1) one end, its characterized in that: a sliding cavity (11) is arranged in the overflow valve body (1) in a penetrating manner, a valve body end cover (3) is arranged at one end, far away from the plug (2), in the sliding cavity (11), and a valve core (4) is connected in the sliding cavity (11) in a sliding manner; one end of the plug (2) is connected with a barrel (21), and a compression cavity (22) communicated with the sliding cavity (11) is arranged in the plug (2) and the barrel (21) in a penetrating way;

a plug (23) is connected in the compression cavity (22) in a sliding manner, and a compression spring (24) is connected between the plug (23) and the valve core (4); the outer wall of barrel (21) is provided with external screw thread (25), the outer wall threaded connection of barrel (21) has adjusting nut (26) and adjust knob (27), adjust knob (27) can be right end cap (23) are suppressed.

2. The hydraulic walking motor one-way overflow valve of claim 1, characterized in that: a pressure groove (41) is formed in one end, opposite to the end cover (3) of the driving valve body, of the valve core (4), a guide groove (42) is formed in the pressure groove (41) along the axial direction of the valve core (4), a drainage hole (43) perpendicular to the guide groove (42) penetrates through the interior of the valve core (4), and a drainage groove (44) is formed in the position, opposite to the drainage hole (43), of the outer wall of the valve core (4);

the lateral wall of overflow valve body (1) is just right the position of drainage groove (44) is provided with inlet (12), the lateral wall of overflow valve body (1) is close to the position of inlet (12) is provided with liquid outlet (13).

3. The hydraulic walking motor one-way overflow valve of claim 2, characterized in that: the lateral wall of overflow valve body (1) is provided with first drainage channel (14), the lateral wall of plug (2) is provided with second drainage channel (28), the one end of first drainage channel (14) with smooth chamber (11) are linked together, the other end of first drainage channel (14) with second drainage channel (28) are linked together, the other end of second drainage channel (28) with compression chamber (22) are linked together.

4. The hydraulic walking motor one-way overflow valve of claim 1, characterized in that: the adjusting knob (27) is internally provided with a thread groove (29) matched with the external thread (25), and the plug (2) is connected with the plug (23) and extends into the thread groove (29) to be in threaded connection with the adjusting knob (27).

5. The hydraulic walking motor one-way overflow valve of claim 1, characterized in that: the valve core (4) is provided with a first limiting block (45) at one end opposite to the compression spring (24), the plug (23) is provided with a second limiting block (230) at one end opposite to the compression spring (24), and two ends of the compression spring (24) are sleeved on the outer portions of the first limiting block (45) and the second limiting block (230).

6. The hydraulic walking motor one-way overflow valve of claim 1, characterized in that: overflow valve body (1) with the junction of plug (2) is provided with first annular (15), first annular (15) set up smooth chamber (11) with the department of meeting of compression chamber (22), install first O type circle (16) in first annular (15).

7. The hydraulic walking motor one-way overflow valve of claim 3, characterized in that: overflow valve body (1) with the junction of plug (2) is provided with second annular (17), second annular (17) set up first drainage channel (14) with the department of meeting of second drainage channel (28), install second O type circle (18) in second annular (17).