CN214578525U - Heavy-load fixed damping force hydraulic bidirectional speed controller - Google Patents

Abstract

The utility model relates to a heavy load fixed damping force hydraulic two-way speed controller, which comprises an end seat, a base, an outer cylinder body, an inner cylinder body, a piston rod and a piston head, wherein the piston head is axially provided with a plurality of through oil holes which are communicated with a first inner cavity and a second inner cavity, and a first check valve is arranged in one oil hole and used for blocking when the piston rod is stretched and opening when the piston rod is compressed; a plurality of oil paths communicating the second inner cavity and the outer cavity are arranged in the base, and a second one-way valve is arranged in each oil path and is blocked when the piston rod is compressed and opened when the piston rod is stretched; a main oil injection port is further arranged in the base, the main oil injection port is respectively communicated with the inner cavity oil injection pipeline and the outer cavity oil injection pipeline, the inner cavity oil injection pipeline is communicated with the second inner cavity, the outer cavity oil injection pipeline is communicated with the outer cavity, and a main oil plugging bolt is arranged in the main oil injection port; the outer cavity is also internally sleeved with a foam energy accumulator. The heavy-load fixed damping force hydraulic bidirectional speed controller with the structure has a simple and durable structure, and meets the requirement on large damping force in a heavy-load environment.

Description

Heavy-load fixed damping force hydraulic bidirectional speed controller

Technical Field

The utility model relates to a heavy load fixed damping power hydraulic pressure two-way speed controller belongs to hydraulic pressure and equips technical field, is particularly useful for heavy machinery or building shock attenuation.

Background

In the prior art, for example, in the fields of building earthquake resistance, large machinery or precision equipment, etc., a damper is generally required to provide a large damping force in a short stroke, so as to ensure that a good shock absorption protection effect is obtained in a heavy load application scene. Therefore, the requirements on the damper, namely the speed controller, are high, the requirement is that the damper not only has high damping, but also has simple and durable structure, and the damper can be suitable for the heavy load application environment. The general damper is difficult to satisfy such a requirement, and thus, it is necessary to redesign the damper.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a heavy load fixed damping power hydraulic pressure two-way speed controller, its simple structure is durable, and can satisfy the requirement to big damping force in the heavy load environment.

A heavy-load fixed damping force hydraulic bidirectional speed controller comprises an end seat, a base, an outer cylinder body, an inner cylinder body, a piston rod and a piston head fixed at one end of the piston rod, wherein the end seat and the base are fixed at two ends of the outer cylinder body and the inner cylinder body in a sealing manner, the inner cylinder body is fixedly sleeved in the outer cylinder body, an outer cavity is formed between the inner cylinder body and the outer cylinder body, the piston head is arranged in the inner cylinder body in a sliding sealing manner, the piston rod penetrates through the end seat in a sealing manner and movably, the piston head divides the inner cylinder body into a first inner cavity close to one side of the end seat and a second inner cavity close to one side of the base,

the piston head is provided with a plurality of through oil passing holes along the axial direction and used for communicating the first inner cavity and the second inner cavity, and a first one-way valve is arranged in one oil passing hole and used for being blocked when the piston rod is stretched and being opened when the piston rod is compressed;

a plurality of oil passages communicated with the second inner cavity and the outer cavity are arranged in the base, and second one-way valves are arranged in the oil passages and used for being blocked when the piston rod is compressed and being opened when the piston rod is stretched;

the base is also internally provided with a main oil injection port which is respectively communicated with an inner cavity oil injection pipeline and an outer cavity oil injection pipeline, the inner cavity oil injection pipeline is communicated with the second inner cavity, the outer cavity oil injection pipeline is communicated with the outer cavity, and a main oil plugging bolt is arranged in the main oil injection port and used for plugging the main oil injection port; and a foam energy accumulator is also sleeved in the outer cavity.

According to the utility model discloses a preferred embodiment, first check valve is being close to including setting up the first steel ball of first inner chamber one end holds chamber and first steel ball, first steel ball holds the chamber and reaches the through-hole that is equipped with the intercommunication before the second inner chamber, the diameter of first steel ball is greater than the diameter of through-hole, the internal diameter that first steel ball held the chamber is greater than first steel ball diameter is located first steel ball holds the chamber and still is equipped with first pin, is used for the restriction the activity space of first steel ball.

According to the utility model discloses a preferred embodiment, the second check valve is being close to including setting up the second steel ball of second inner chamber one end holds chamber and second steel ball, the second steel ball holds the chamber intercommunication the oil circuit, the diameter of second steel ball is greater than the diameter of oil circuit, the second steel ball holds the internal diameter in chamber and is greater than second steel ball diameter is located the second steel ball holds the chamber and still is equipped with the second pin, is used for the restriction the activity space of second steel ball.

According to the utility model discloses a preferred embodiment, all the other oilhole endotheca are crossed the oil slug, it is fixed through two hollow bolt centre grippings respectively to cross the both ends of oil slug, hollow bolt with cross oilhole threaded connection.

According to a preferred embodiment of the present invention, the oil passing channel of the oil passing plug is formed by a circular through hole, a groove, an oval through hole or a combination thereof.

According to a preferred embodiment of the present invention, the number of the oil passing holes is four, and the oil passing holes are symmetrically distributed around the central axis; the number of the oil passages is four, and the oil passages are symmetrically distributed around the central axis.

According to the utility model discloses a preferred embodiment, still install the throttle head through threaded connection in the through-hole, be equipped with the orifice in the throttle head.

According to the utility model discloses a preferred embodiment, still be equipped with vice oiling mouth on the base, vice oiling mouth and one of them the oil circuit intercommunication, install vice oil shutoff bolt in the vice oiling mouth, be used for the shutoff vice oiling mouth.

According to a preferred embodiment of the present invention, the inner cylinder is respectively screwed and axially abutted to the end seat and the base; the outer cylinder body is respectively in threaded connection with the end seat and the base, one end of the outer cylinder body is axially abutted to the base, the other end of the outer cylinder body is axially abutted to the end cover, and the end cover is in threaded connection with the end of the end seat.

According to the utility model discloses a preferred embodiment, in order to guarantee sealed effect, a plurality of positions department is equipped with the sealing washer, a plurality of positions are selected from the group including following each item position:

the piston head and the inner cylinder body, the piston rod and the end seat, the end seat and the inner cylinder body, the end seat and the outer cylinder body, the base and the inner cylinder body, the base and the outer cylinder body, the main oil-blocking bolt and the base, the auxiliary oil-blocking bolt and the base and the combination of the above components.

On the basis of the common knowledge in the field, the above preferred embodiments can be combined at will to obtain the preferred embodiments of the present invention.

The utility model discloses a heavy load fixed damping force hydraulic pressure two-way speed controller, including the end seat, a pedestal, the outer cylinder body, the inner cylinder body, the piston rod and fix the piston head in piston rod one end, the end seat, the sealed both ends of fixing at outer cylinder body and inner cylinder body of base, the fixed cover of inner cylinder body is established in the inside of outer cylinder body, form the exocoel between inner cylinder body and the outer cylinder body, piston head sliding seal cover is established in the inner cylinder body, the piston rod passes through the end seat sealedly and the activity runs through the end seat, the piston head cuts apart the inner cylinder body and is the first inner chamber that is close to end seat one side and the second inner chamber that is close to base one side, the piston head is equipped with a plurality of through-hole along the axial, in order to communicate first inner chamber and second inner chamber, be equipped with first check valve in one of them through-hole, in order to block up when the piston rod is tensile, open when compressing; a plurality of oil paths communicating the second inner cavity and the outer cavity are arranged in the base, and a second one-way valve is arranged in each oil path and used for being blocked when the piston rod is compressed and being opened when the piston rod is stretched; a main oil injection port is further arranged in the base, the main oil injection port is respectively communicated with the inner cavity oil injection pipeline and the outer cavity oil injection pipeline, the inner cavity oil injection pipeline is communicated with the second inner cavity, the outer cavity oil injection pipeline is communicated with the outer cavity, and a main oil plugging bolt is arranged in the main oil injection port and used for plugging the main oil injection port; the outer cavity is also internally sleeved with a foam energy accumulator. When the piston rod is compressed by a heavy load, an oil way on the base is blocked under the action of the second one-way valve, and hydraulic oil in the second inner cavity flows to the first inner cavity through the oil passing hole on the piston head; when the piston rod stretches, the first check valve blocks one of the oil passing holes, hydraulic oil in the first inner cavity flows to the second inner cavity through the rest oil passing holes, meanwhile, the second check valve is opened, and the second inner cavity is communicated with the outer cavity to adjust the pressure difference. The heavy-load fixed damping force hydraulic bidirectional speed controller with the structure has a simple and durable structure, and meets the requirement on large damping force in a heavy-load environment.

For a better understanding of the above and other objects, features, advantages and functions of the present invention, reference should be made to the preferred embodiments illustrated in the accompanying drawings. It will be appreciated by persons skilled in the art that the drawings are intended to illustrate preferred embodiments of the invention without any limiting effect on the scope of the invention, and that the various components in the drawings are not to scale.

Drawings

For a better understanding of the above and other objects, features, advantages and functions of the present invention, reference should be made to the preferred embodiments illustrated in the accompanying drawings. It will be appreciated by persons skilled in the art that the drawings are intended to illustrate preferred embodiments of the invention without any limiting effect on the scope of the invention, and that the various components in the drawings are not to scale.

Fig. 1 is a half-section view of a heavy load fixed damping force hydraulic two-way speed controller according to a preferred embodiment of the present invention;

FIG. 2 is a schematic sectional view taken along the direction F-F in FIG. 1;

FIG. 3 is a side view of a piston head according to a preferred embodiment of the present invention;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;

FIG. 5 is a cross-sectional view taken along line B-B of FIG. 3;

fig. 6 is a perspective view of a base according to a preferred embodiment of the present invention;

FIG. 7 is a side end view of the base of FIG. 6;

FIG. 8 is a cross-sectional view taken along line E-E of FIG. 7;

FIG. 9 is a cross-sectional view taken along line C-C of FIG. 8;

fig. 10 is a sectional view taken along the direction D-D in fig. 7.

Description of reference numerals:

an end seat 1; a base 2; an outer cylinder body 3; an inner cylinder 4; a piston rod 5; a piston head 6; an outer chamber 7; a first inner cavity 8 a; a second inner cavity 8 b; an oil passing hole 9; a first check valve 10; an oil passage 11; a second check valve 12; a main oiling port 13; an inner cavity oil injection line 14; an outer cavity oil injection pipeline 15; a primary oil shut-off bolt 16; a foam accumulator 17; a first steel ball accommodating chamber 10 a; a first steel ball 10 b; a first stopper lever 10 c; a second steel ball accommodating chamber 12 a; a second steel ball 12 b; a second stopper lever 12 c; a through hole 18; an oil plug 19; a hollow bolt 20; a throttle head 21; a secondary oil fill port 22; an auxiliary oil shutoff bolt 23; an end cap 24.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. Reference will now be made in detail to the preferred embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following preferred embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely preferred embodiments of the device and method in accordance with aspects of the invention as detailed in the appended claims, on the basis of which other ways of implementing the invention may be conceived by those skilled in the art, which likewise fall within the scope of the invention. In the following detailed description, directional terms, such as "upper", "lower", "inner", "outer", "longitudinal", "lateral", and the like, are used with reference to the orientation depicted in the accompanying drawings. The components of embodiments of the present invention can be positioned in a variety of orientations, and the directional terminology is used for purposes of illustration and is in no way limiting.

As shown in fig. 1 to 10, a heavy-load fixed damping force hydraulic two-way speed controller comprises an end seat 1, a base 2, an outer cylinder 3, an inner cylinder 4, a piston rod 5 and a piston head 6 fixed at one end of the piston rod 5, wherein the end seat 1 and the base 2 are fixed at two ends of the outer cylinder 3 and the inner cylinder 4 in a sealing manner, the inner cylinder 4 is fixedly sleeved inside the outer cylinder 3, an outer cavity 7 is formed between the inner cylinder 4 and the outer cylinder 3, the piston head 6 is slidably and hermetically sleeved in the inner cylinder 4, the piston rod 5 is hermetically and movably penetrated through the end seat 1, the piston head 6 divides the inner cylinder 4 into a first inner cavity 8a close to one side of the end seat 1 and a second inner cavity 8b close to one side of the base 2, the piston head 6 is provided with a plurality of through oil through holes 9 along the axial direction, the first inner cavity 8a and the second inner cavity 8b are communicated, and a first one-way valve 10 is arranged in one oil passing hole 9 and is used for being blocked when the piston rod 5 is stretched and being opened when the piston rod is compressed; a plurality of oil passages 11 communicating the second inner cavity 8b with the outer cavity 7 are arranged in the base 2, and second one-way valves 12 are arranged in the oil passages 11 and are used for being blocked when the piston rod 5 is compressed and opened when the piston rod is stretched; a main oil filling port 13 is further arranged in the base 2, the main oil filling port 13 is respectively communicated with an inner cavity oil filling pipeline 14 and an outer cavity oil filling pipeline 15, the inner cavity oil filling pipeline 14 is communicated with the second inner cavity 8b, the outer cavity oil filling pipeline 15 is communicated with the outer cavity 7, and a main oil plugging bolt 16 is arranged in the main oil filling port 13 and used for plugging the main oil filling port 13; and a foam energy accumulator 17 is also sleeved in the outer cavity 7.

With reference to fig. 3 and 5, according to the utility model discloses, first check valve 10 is being close to including setting up the first steel ball of first inner chamber 8a one end holds chamber 10a and first steel ball 10b, first steel ball holds chamber 10a and the through-hole 18 that second inner chamber 8b was equipped with the intercommunication before, first steel ball 10 b's diameter is greater than the diameter of through-hole 18, first steel ball holds the internal diameter that chamber 10a is greater than first steel ball 10b diameter, is located first steel ball holds chamber 10a and still is equipped with first pin 10c for the restriction first steel ball 10 b's activity space.

As shown in fig. 7 to 9, preferably, the second check valve 12 includes a second steel ball receiving cavity 12a and a second steel ball 12b, which are disposed at an end close to the second inner cavity 8b, the second steel ball receiving cavity 12a is communicated with the oil path 11, a diameter of the second steel ball 12b is greater than a diameter of the oil path 11, an inner diameter of the second steel ball receiving cavity 10a is greater than a diameter of the second steel ball 12b, and a second stopper rod 12c is further disposed in the second steel ball receiving cavity 12a and used for limiting a movement space of the second steel ball 12 b.

Combine fig. 3 to 5, according to the utility model discloses, all the other oilhole 9 endotheca are equipped with the oily bolt 19 of crossing, it is fixed through two hollow bolt 20 centre grippings respectively to cross the both ends of oily bolt 19, hollow bolt 20 with cross oilhole 9 threaded connection.

According to the present invention, the oil passing channel of the oil plug 19 adopts a circular through hole, a groove, an elliptical through hole or a combination thereof. The specific selection of the oil passing plugs 19 may be different types or combinations thereof according to the situation, for example, different types of oil passing plugs are selected in fig. 4 and fig. 5, and have different oil passing channels, which is not described in detail in this embodiment. The number of the oil passing holes 9 is four, and the oil passing holes are symmetrically distributed around the central axis; the number of the oil passages 11 is four, and the oil passages are symmetrically distributed around the central axis. A throttle head 21 is further installed in the through hole 18 through threaded connection, and a throttle hole is formed in the throttle head 21.

With reference to fig. 6 to 10, according to the utility model discloses, still be equipped with vice oiling mouth 22 on the base 2, vice oiling mouth 22 with one of them oil circuit 11 intercommunication, install vice oil shutoff bolt 23 in the vice oiling mouth 22, be used for the shutoff vice oiling mouth 22. In fig. 10, due to the limitation of the machining process, a hole is bored or drilled at one axial end of the base 2, and then the hole is axially blocked, so that a part of the outer cavity oil injection pipeline 14 is formed, and the hole is radially opened together with the axial hole, so that the outer cavity oil injection pipeline 14 is formed.

According to the utility model, the inner cylinder body 4 is respectively connected with the end seat 1 and the base 2 by screw threads and is axially abutted; the outer cylinder body 3 is respectively in threaded connection with the end seat 1 and the base 2, one end of the outer cylinder body 3 is axially abutted to the base 2, the other end of the outer cylinder body is axially abutted to the end cover 24, and the end cover 24 is in threaded connection with the end part of the end seat 1.

According to the utility model discloses, a plurality of positions department is equipped with the sealing washer, a plurality of positions are selected from the group including following each item position: the oil blocking device comprises a piston head 6, an inner cylinder body 4, a piston rod 5, an end seat 1, an outer cylinder body 4, a base 2, an inner cylinder body 4, a base 2, an outer cylinder body 3, a main oil blocking bolt 16, a main oil blocking bolt 2, an auxiliary oil blocking bolt, a base 2 and a combination of the above components. The sealing ring is arranged in a necessary and common technology in the hydraulic field and is arranged at different positions according to requirements, and the specific arrangement mode is not repeated.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims. The above description is only for the purpose of illustrating embodiments of the present invention and should not be taken as limiting the invention, and any modifications, equivalents, improvements and the like made by those skilled in the art within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (10)

1. A heavy-load fixed damping force hydraulic bidirectional speed controller comprises an end seat, a base, an outer cylinder body, an inner cylinder body, a piston rod and a piston head fixed at one end of the piston rod, wherein the end seat and the base are fixed at two ends of the outer cylinder body and the inner cylinder body in a sealing manner, the inner cylinder body is fixedly sleeved in the outer cylinder body, an outer cavity is formed between the inner cylinder body and the outer cylinder body, the piston head is arranged in the inner cylinder body in a sliding sealing manner, the piston rod penetrates through the end seat in a sealing manner and movably, the piston head divides the inner cylinder body into a first inner cavity close to one side of the end seat and a second inner cavity close to one side of the base,

the piston head is provided with a plurality of through oil passing holes along the axial direction and used for communicating the first inner cavity and the second inner cavity, and a first one-way valve is arranged in one oil passing hole and used for being blocked when the piston rod is stretched and being opened when the piston rod is compressed;

a plurality of oil passages communicated with the second inner cavity and the outer cavity are arranged in the base, and second one-way valves are arranged in the oil passages and used for being blocked when the piston rod is compressed and being opened when the piston rod is stretched;

the base is also internally provided with a main oil injection port which is respectively communicated with an inner cavity oil injection pipeline and an outer cavity oil injection pipeline, the inner cavity oil injection pipeline is communicated with the second inner cavity, the outer cavity oil injection pipeline is communicated with the outer cavity, and a main oil plugging bolt is arranged in the main oil injection port and used for plugging the main oil injection port;

and a foam energy accumulator is also sleeved in the outer cavity.

2. The heavy-load fixed-damping-force hydraulic two-way speed controller according to claim 1, wherein the first check valve comprises a first steel ball accommodating cavity and a first steel ball which are arranged at one end close to the first inner cavity, a through hole is formed in front of the first steel ball accommodating cavity and the second inner cavity and communicated with each other, the diameter of the first steel ball is larger than that of the through hole, the inner diameter of the first steel ball accommodating cavity is larger than that of the first steel ball, and a first stop lever is arranged in the first steel ball accommodating cavity and used for limiting the moving space of the first steel ball.

3. The heavy-load fixed-damping-force hydraulic two-way speed controller according to claim 1, wherein the second check valve comprises a second steel ball receiving cavity and a second steel ball, the second steel ball receiving cavity is arranged at one end close to the second inner cavity, the second steel ball receiving cavity is communicated with the oil path, the diameter of the second steel ball is larger than that of the oil path, the inner diameter of the second steel ball receiving cavity is larger than that of the second steel ball, and a second stop lever is arranged in the second steel ball receiving cavity and used for limiting the moving space of the second steel ball.

4. The heavy-load fixed-damping-force hydraulic two-way speed controller according to claim 1, wherein oil passing bolts are sleeved in the other oil passing holes, two ends of each oil passing bolt are clamped and fixed through two hollow bolts respectively, and the hollow bolts are in threaded connection with the oil passing holes.

5. The heavy-load fixed-damping-force hydraulic bidirectional speed controller according to claim 4, wherein the oil passage of the oil passing plug is in the form of a circular through hole, a groove, an elliptical through hole or a combination thereof.

6. The heavy-load fixed-damping-force hydraulic bidirectional speed controller according to claim 1, wherein the number of the oil passing holes is four, and the oil passing holes are symmetrically distributed around the central axis; the number of the oil passages is four, and the oil passages are symmetrically distributed around the central axis.

7. The heavy-load fixed-damping-force hydraulic bidirectional speed controller according to claim 2, wherein a throttle head is further installed in the through hole through a threaded connection, and a throttle hole is formed in the throttle head.

8. The heavy-load fixed-damping-force hydraulic bidirectional speed controller according to claim 1, wherein an auxiliary oil filling port is further provided in the base, the auxiliary oil filling port is communicated with one of the oil passages, and an auxiliary oil blocking bolt is installed in the auxiliary oil filling port to block the auxiliary oil filling port.

9. The heavy-load fixed-damping-force hydraulic two-way speed controller according to claim 4, wherein the inner cylinder is respectively screwed and axially abutted against the end seat and the base; the outer cylinder body is respectively in threaded connection with the end seat and the base, one end of the outer cylinder body is axially abutted to the base, the other end of the outer cylinder body is axially abutted to the end cover, and the end cover is in threaded connection with the end of the end seat.

10. The heavy-load fixed-damping-force hydraulic bi-directional speed controller of claim 8, wherein sealing rings are provided at a plurality of locations selected from the group consisting of:

the piston head and the inner cylinder body, the piston rod and the end seat, the end seat and the inner cylinder body, the end seat and the outer cylinder body, the base and the inner cylinder body, the base and the outer cylinder body, the main oil-blocking bolt and the base, the auxiliary oil-blocking bolt and the base and the combination of the above components.

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