CN211874855U

CN211874855U - Self-adaptive high-low pressure piston rod

Info

Publication number: CN211874855U
Application number: CN202020179086.XU
Authority: CN
Inventors: 陈涉
Original assignee: Ningbo East Hydraulic Transmission Technology Co ltd
Current assignee: Ningbo East Hydraulic Transmission Technology Co ltd
Priority date: 2020-02-18
Filing date: 2020-02-18
Publication date: 2020-11-06
Anticipated expiration: 2030-02-18

Abstract

The utility model discloses a self-adaptation high-low pressure piston rod, including the hydro-cylinder body, the inside swing joint of hydro-cylinder body has first piston rod, the right-hand member threaded connection thread bush of hydro-cylinder body, first piston rod one end is passed hydro-cylinder body, thread bush and is connected with first collar through the connecting rod, the inside hollow cylinder structure that is of first piston rod, the inside slip of first piston rod is provided with the slip plunger, the outside fixed sliding block that is provided with of slip plunger, the inside sliding tray with sliding block complex of seting up of first piston rod, the right-hand member threaded connection of slip plunger has the adapter sleeve, the adapter sleeve the right offsets with cylinder connector one end, cylinder connector one end offsets with the inside bottom surface of slip plunger. The utility model has the characteristics of low pressure slow motion, high pressure quick travel's characteristics, the too big problem of impact that the technical background improved has been solved, has characteristics steady in operation, long service life.

Description

Self-adaptive high-low pressure piston rod

Technical Field

The utility model relates to a piston rod technical field specifically is a self-adaptation high-low pressure piston rod.

Background

The piston rod is a hydraulic actuator which converts hydraulic energy into mechanical energy and makes linear reciprocating motion (or swinging motion). It has simple structure and reliable operation. When it is used to implement reciprocating motion, it can omit speed-reducing device, and has no transmission gap, and its motion is stable, so that it can be extensively used in various mechanical hydraulic systems. The hydraulic piston rod in the prior art moves independently when in use, high pressure or low pressure is separated, the piston rod rises to a high pressure state at a stroke to operate in the actual use process, the piston rod impacts excessively when in operation, the piston rod operation part is stable, and the service life of the piston rod is influenced.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a self-adaptation high-low pressure piston rod has solved prior art's hydraulic piston rod and is solitary motion when using, and high pressure or low pressure all are detached piston rod when using, rises to high pressure state at one stroke and moves in the in-service use, and the piston rod strikes too big when moving, and piston rod operation portion is steady, influences the life's of piston rod problem.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: a self-adaptive high-low pressure piston rod comprises an oil cylinder body, a first piston rod is movably connected inside the oil cylinder body, the right end of the oil cylinder body is in threaded connection with a threaded sleeve, one end of the first piston rod penetrates through the oil cylinder body and the threaded sleeve and is connected with a first mounting ring through a connecting rod, the interior of the first piston rod is of a hollow cylindrical structure, a sliding plunger is arranged in the first piston rod in a sliding manner, a sliding block is fixedly arranged outside the sliding plunger, a sliding groove matched with the sliding block is arranged inside the first piston rod, the right end of the sliding plunger piston is connected with a connecting sleeve in a threaded manner, the right side of the connecting sleeve is propped against one end of the cylindrical connecting body, one end of the cylindrical connecting body is abutted to the bottom surface inside the sliding plunger, the right end of the first piston rod is provided with an oil through hole, an oil port A is formed in the oil cylinder body, and an oil port B is formed in the threaded sleeve.

Preferably, the first piston rod is connected with the oil cylinder body at the position outside the position

The cover is equipped with first sealing washer, first sealing washer is two.

Preferably, a second sealing ring is arranged at a position where the sliding plunger is connected with the first piston rod, and the number of the second sealing ring is two.

Preferably, a stop block is fixedly arranged at the left end of the sliding groove and is connected with the sliding groove in a welding mode.

Preferably, the number of the sliding blocks is two, and the two sliding blocks are arranged on the outer portion of the sliding plunger at equal angles.

Preferably, the number of the oil through holes is two, and the two oil through holes are symmetrically arranged at the right end of the first piston rod.

Preferably, a second mounting ring is arranged on the left side of the oil cylinder body.

(III) advantageous effects

The utility model provides a self-adaptation high-low pressure piston rod possesses following beneficial effect:

the oil port A of the utility model is connected on the oil cylinder body in a welding mode, the oil port B is connected on the threaded sleeve in a welding mode, the stop block is welded with the first piston rod, the position where the threaded sleeve is connected with the oil cylinder body is provided with the sealing gasket, and the rest parts are assembled according to the figure; when the hydraulic oil return device is used, the second mounting ring and the first mounting ring are used for being connected with the outside, the oil port A and the oil port B are communicated with a hydraulic pipeline, hydraulic oil pushes the sliding plunger to move rightwards under the low-pressure state, and the low-pressure cavity returns oil through the oil through hole; pressure rises gradually to the high-pressure state, promotes first piston rod and moves to the right, has realized stretching out of first piston rod, and the withdrawal of first piston rod also can be realized to the contrary, and the slip plunger moves to the left. The utility model has the characteristics of low pressure slow motion, high pressure quick travel's characteristics, the too big problem of impact that the technical background improved has been solved, has characteristics steady in operation, long service life.

Drawings

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

fig. 2 is an assembly structure view of the first piston rod of the present invention;

fig. 3 is a structural diagram of the connecting sleeve of the present invention;

fig. 4 is a structural diagram of the first piston rod of the present invention.

In the figure: the hydraulic cylinder comprises a second mounting ring 1, an oil port A2, a stop block 3, a sliding block 4, a connecting sleeve 5, a cylindrical connecting body 6, a first mounting ring 7, an oil port B8, a threaded sleeve 9, a first piston rod 10, a sliding plunger 11, a cylinder body 12, a second sealing ring 13, a first sealing ring 14, a connecting rod 15, a sliding groove 16 and an oil through hole 17.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1-4, the utility model provides a technical solution: a self-adaptive high-low pressure piston rod comprises an oil cylinder body 12, a first piston rod 10 is movably connected inside the oil cylinder body 12, a right end of the oil cylinder body 12 is in threaded connection with a threaded sleeve 9, the first piston rod 10 is of a hollow cylindrical structure, a sliding plunger 11 is slidably arranged inside the first piston rod 10, one end of the sliding plunger 11 penetrates through the first piston rod 10 and the threaded sleeve 9 and is connected with a first mounting ring 7 through a connecting rod 15, a sliding block 4 is fixedly arranged outside the sliding plunger 11, a sliding groove 16 matched with the sliding block 4 is formed inside the first piston rod 10, a connecting sleeve 5 is in threaded connection with the right end of the sliding plunger 11, the right side of the connecting sleeve 5 is connected with a cylindrical connecting body 6, one end of the cylindrical connecting body 6 is connected with the connecting rod 15, and an oil through hole 17 is formed in the right end, an oil port A2 is formed in the oil cylinder body 12, and an oil port B8 is formed in the thread bush 9.

Further, a first sealing ring 14 is sleeved outside the position where the first piston rod 10 is connected with the cylinder body 12, and the number of the first sealing ring 14 is two.

Furthermore, a second sealing ring 13 is arranged at a position where the sliding plunger 11 is connected with the first piston rod 10, and the number of the second sealing ring 13 is two.

Furthermore, a stopper 3 is fixedly arranged at the left end of the sliding groove 16, and the stopper 3 is connected with the sliding groove 16 in a welding manner.

Further, the number of the slide blocks 4 is two, and the two slide blocks 4 are disposed at equal angles outside the slide plunger 11.

Further, there are two oil through holes 17, and the two oil through holes 17 are symmetrically arranged at the right end of the first piston rod 10.

Further, a second mounting ring 1 is arranged on the left side of the oil cylinder body 12.

The oil port A2 of the utility model is connected on the oil cylinder body 12 in a welding mode, the oil port B8 is connected on the thread bush 9 in a welding mode, the stop block 3 is connected with the first piston rod 10 in a welding mode, the position where the thread bush 9 is connected with the oil cylinder body 12 is provided with a sealing gasket, and other parts are all assembled according to the drawing; when the hydraulic control device is used, the second mounting ring 1 and the first mounting ring 7 are used for being connected with the outside, the oil port A2 and the oil port B8 are communicated with a hydraulic pipeline, hydraulic oil pushes the sliding plunger 11 to move rightwards to provide pressure for a low-pressure cavity in a low-pressure state, and the low-pressure cavity performs oil return through the oil through hole 17 and enters a system to be controlled to perform low-pressure control; when the pressure gradually rises to a high-pressure state, the hydraulic oil pushes the first piston rod 10 to move rightwards, and the first piston rod 10 extends out to realize the action control of the output end of the first piston rod; and high-pressure oil is introduced from the oil supply port B8, the pressure oil firstly pushes the sliding plunger 11 to move leftwards, then the sliding plunger 11 integrally moves leftwards, when the pressure of the rodless cavity is overlarge, the sliding plunger 11 moves rightwards, and the slow movement is realized under the condition of small pressure.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a high low pressure piston rod of self-adaptation, includes hydro-cylinder body (12), its characterized in that: the inner part of the oil cylinder body (12) is movably connected with a first piston rod (10), the right end of the oil cylinder body (12) is in threaded connection with a threaded sleeve (9), the inner part of the first piston rod (10) is of a hollow cylindrical structure, a sliding plunger (11) is arranged in the first piston rod (10) in a sliding mode, one end of the sliding plunger (11) penetrates through the first piston rod (10) and the threaded sleeve (9) and is connected with a first mounting ring (7) through a connecting rod (15), a sliding block (4) is fixedly arranged on the outer part of the sliding plunger (11), a sliding groove (16) matched with the sliding block (4) is formed in the first piston rod (10), the right end of the sliding plunger (11) is in threaded connection with a connecting sleeve (5), the right side of the connecting sleeve (5) is connected with a cylindrical connecting body (6), one end of the cylindrical connecting body (, the right end of the first piston rod (10) is provided with an oil through hole (17), the oil cylinder body (12) is provided with an oil port A (2), and the thread bush (9) is provided with an oil port B (8).

2. An adaptive high-low pressure piston rod according to claim 1, wherein: the first piston rod (10) is connected with the oil cylinder body (12) at the outside of the position

The cover is equipped with first sealing washer (14), first sealing washer (14) are two.

3. An adaptive high-low pressure piston rod according to claim 1, wherein: and a second sealing ring (13) is arranged at the position where the sliding plunger (11) is connected with the first piston rod (10), and the number of the second sealing ring (13) is two.

4. An adaptive high-low pressure piston rod according to claim 1, wherein: the left end of the sliding groove (16) is fixedly provided with a stop block (3), and the stop block (3) is connected with the sliding groove (16) in a welding mode.

5. An adaptive high-low pressure piston rod according to claim 1, wherein: the sliding blocks (4) are two, and the sliding blocks (4) are arranged outside the sliding plunger (11) at equal angles.

6. An adaptive high-low pressure piston rod according to claim 1, wherein: the number of the oil through holes (17) is two, and the two oil through holes (17) are symmetrically arranged at the right end of the first piston rod (10).

7. An adaptive high-low pressure piston rod according to claim 1, wherein: and a second mounting ring (1) is arranged on the left side of the oil cylinder body (12).