CN216478564U

CN216478564U - Hydraulic enclasping mechanism

Info

Publication number: CN216478564U
Application number: CN202123347587.8U
Authority: CN
Inventors: 岳向成
Original assignee: Chuanbei Vacuum Technology Beijing Co ltd
Current assignee: Chuanbei Vacuum Technology Beijing Co ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-05-10
Anticipated expiration: 2031-12-28

Abstract

The utility model provides a mechanism is embraced to hydraulic pressure belongs to the mechanical technical field of axle enclasping, include: the shell is provided with a central hole for penetrating through the expansion sleeve, a hydraulic channel leading to the central hole is arranged in the shell, and the other end of the hydraulic channel is provided with an inlet section extending out of the shell; two ends of the outer wall of the expansion sleeve are respectively connected with two ends of the central hole of the shell in a sealing way; the hydraulic piston is arranged in the inlet section of the hydraulic channel in a sealing sliding mode; the driving piece is connected with the hydraulic piston and used for driving the hydraulic piston to slide in the hydraulic channel in a sealing manner; the utility model discloses a hydraulic pressure enclasping mechanism adopts hydraulic mode to carry out even exerting pressure to the tight cover that expands to enclasping through the tight cover counter shaft that expands, because the pressure that receives around the tight cover that expands is the same, consequently the tight cover that expands can carry out even deformation, and the concentricity of the tight cover that expands after the deformation is unchangeable, thereby the counter shaft has carried out to enclasping and to guarantee to have higher concentricity after tightly.

Description

Hydraulic enclasping mechanism

Technical Field

The utility model relates to a mechanical technical field is held tightly to the axle, concretely relates to mechanism is held tightly to hydraulic pressure.

Background

The traditional mechanical shaft holding device clamps a shaft by means of opposite sliding of a mechanical oblique wedge through deformation of an inner wedge and an outer wedge, so that the shaft is held tightly.

However, when the shaft is clamped by the above clamping method, the concentricity of the clamped shaft is not high enough due to processing errors between the tapered wedges.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the machinery among the prior art and hugging closely the mechanism, the not high enough defect of concentricity when the counter shaft is embraced closely to a hydraulic pressure is provided and is embraced closely the mechanism.

In order to solve the technical problem, the utility model provides a mechanism is held tightly to hydraulic pressure, include:

a housing having a central bore for passage through the expansion sleeve, the housing having a hydraulic passage therein leading to the central bore, the hydraulic passage having an inlet section at its other end projecting out of the housing;

the expansion sleeve is inserted into the central hole of the shell, and two ends of the outer wall of the expansion sleeve are respectively connected with two ends of the central hole of the shell in a sealing manner;

the hydraulic piston is arranged in the inlet section of the hydraulic channel in a sealing and sliding mode;

and the driving piece is connected with the hydraulic piston and is used for driving the hydraulic piston to perform sealed sliding in the hydraulic channel.

Optionally, the driving member is connected with the housing through a thread.

Optionally, the diameter of the driver is greater than the diameter of the hydraulic piston.

Optionally, the hydraulic passage has a throat formation on its way to the central bore.

Optionally, the hydraulic channel has a bend before opening into the central bore.

Optionally, the necking structure is arranged at a bending position of the hydraulic channel.

Optionally, the section of the hydraulic channel which is bent for access to the central bore has a second opening which is closed off by a closure.

Optionally, the second opening is formed in a plane of the housing.

The utility model also provides a manufacturing method of any one of above-mentioned scheme hydraulic pressure enclasping mechanism, including following step:

after the shell and the expansion sleeve are respectively processed, the shell and the expansion sleeve are assembled;

and sealing and welding the two ends of the expansion sleeve and the two ends of the central hole of the shell by adopting an argon arc welding or vacuum brazing mode.

Optionally, when machining the hydraulic channel in the housing, the hydraulic channel is bent before being led to the central hole by punching holes at two different positions in the circumferential direction of the housing, and a necking structure is formed at the bent position.

The utility model discloses technical scheme has following advantage:

1. the utility model provides a hydraulic pressure enclasping mechanism adopts hydraulic mode to carry out even exerting pressure to the tight cover that expands to enclasping through the tight cover counter shaft that expands, because the pressure that receives around the tight cover that expands is the same, consequently the tight cover that expands can carry out even deformation, and the concentricity of the tight cover that expands after the deformation is unchangeable, thereby the counter shaft has carried out to enclasping and to guarantee to have higher concentricity after tightly.

2. The utility model provides a mechanism is embraced to hydraulic pressure has the throat structure in hydraulic passage, can guarantee through this throat structure to expand tight cover and carry out the application of pressure of light weight more to further guarantee that the atress of the tight cover that expands is even, and the concentricity after the deformation is unchangeable.

3. The utility model provides a mechanism is embraced to hydraulic pressure, the driving piece passes through the screw thread and is connected with the shell, consequently, can carry out the application of hydraulic pressure and release through the knob driving piece, and the operation is convenient and more accurate.

4. The utility model provides a manufacturing approach of hydraulic pressure enclasping mechanism for make above-mentioned hydraulic pressure enclasping mechanism, consequently have above-mentioned arbitrary advantage, in addition, adopt welded mode equipment shell and the tight cover that expands, can guarantee to expand tightly to overlap and the sealed between the shell, guarantee to expand the effective work of tight cover.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic sectional explosion diagram of an embodiment of a hydraulic clasping mechanism provided in an embodiment of the present invention

Fig. 2 is a perspective exploded view of the hydraulic clasping mechanism of fig. 1.

Fig. 3 is an axial sectional schematic view of the hydraulic clasping mechanism of fig. 1.

Description of reference numerals:

1. a housing; 2. expanding and tightening the sleeve; 3. a hydraulic channel; 4. an inlet section; 5. a hydraulic piston; 6. a drive member; 7. a necking structure; 8. a second opening; 9. a plane; 10. a closure.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. 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.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

The hydraulic enclasping mechanism provided by the embodiment is used for enclasping a shaft at high concentricity.

As shown in fig. 1, a specific implementation of the hydraulic clasping mechanism provided for this embodiment includes: the casing 1 is provided with a central hole for penetrating through the expansion sleeve 2, a hydraulic channel 3 leading to the central hole is arranged in the casing 1, and the other end of the hydraulic channel 3 is provided with an inlet section 4 extending out of the casing 1. The expansion sleeve 2 is inserted in the central hole of the shell 1, and two ends of the outer wall of the expansion sleeve 2 are respectively connected with two ends of the central hole of the shell 1 in a sealing manner. The hydraulic passage 3 is provided with a hydraulic piston 5 in the inlet section 4 in a sealing sliding manner, the hydraulic piston 5 is connected with a driving piece 6, and the driving piece 6 is used for driving the hydraulic piston 5 to slide in the hydraulic passage 3 in a sealing manner.

The hydraulic pressure enclasping mechanism that this embodiment provided adopts hydraulic mode to carry out even pressure to the tight cover 2 that expands to enclasping through the tight cover 2 counter shaft that expands, because the pressure that receives around the tight cover 2 that expands is the same, consequently the tight cover 2 that expands can carry out even deformation, and the tight cover 2's that expands concentricity after the deformation is unchangeable, thereby the counter shaft is gone on to hold and to guarantee to have higher concentricity after tightly.

As shown in fig. 1, in the hydraulic clasping mechanism provided in the present embodiment, the driving member 6 is connected to the housing 1 by a screw. By means of the knob drive 6, the hydraulic piston 5 can be pressurized or depressurized.

As shown in fig. 1, in the hydraulic clasping mechanism provided by this embodiment, the diameter of the driving member 6 is greater than the diameter of the hydraulic piston 5, so that the acting force generated when the driving member 6 drives the hydraulic piston 5 can be reduced, and meanwhile, the external thread can be conveniently arranged on the driving member 6, so that the adjustment driving is more accurate.

As shown in fig. 1, the present embodiment provides the hydraulic clasping mechanism in which the hydraulic passage 3 has a throat structure 7 on the way to the center hole. The necking structure 7 can limit the flow of hydraulic oil for applying pressure or releasing pressure, and the phenomenon that the expansion sleeve 2 cannot be concentric due to too fast driving is avoided, so that the concentricity of the expansion sleeve 2 after applying pressure is further improved.

As shown in fig. 1, in the hydraulic clasping mechanism provided in the present embodiment, the hydraulic channel 3 has a bend before being led to the central hole, and the throat structure 7 is provided at the bend of the hydraulic channel 3. Through the setting of this bending, can be convenient for to the setting of throat structure 7, convenience when improving the product and making. In particular, the section of the hydraulic channel 3 which is bent to open into the central bore has a second opening 8, which second opening 8 is closed off by a closure element 10. This second opening 8 is the opening left when the hole is punched in the second position of the housing 1.

As shown in fig. 1 and 2, in the hydraulic clasping mechanism provided in the present embodiment, the second opening 8 is formed on the plane 9 of the housing 1. The plane 9 can improve the convenience of the punching operation, thereby improving the precision of the punching path.

The manufacturing method of the hydraulic enclasping mechanism provided by the embodiment comprises the following steps:

as shown in fig. 3, the outer shell 1 and the expansion sleeve 2 are first processed separately, and then the outer shell 1 and the expansion sleeve 2 are assembled.

And then, sealing and welding the two ends of the expansion sleeve 2 and the two ends of the central hole of the shell 1 by adopting an argon arc welding or vacuum brazing mode.

During the use, pour into hydraulic oil in the hydraulic pressure passageway 3 of shell 1, connect hydraulic piston 5 and driving piece 6 in the hydraulic pressure passageway 3 of shell 1 in proper order, then through knob driving piece 6, carry out sealed slide adjustment to hydraulic piston 5 to make the inflation cover warp and hold tightly.

The shell 1 and the expansion sleeve 2 can be made of stainless steel materials, or carbon steel, titanium alloy, aluminum alloy and other materials. Then, the outer circle, the inner circle, and the hydraulic passage 3 are machined using a lathe or a milling machine.

When the hydraulic channel 3 in the housing 1 is machined, holes are punched at two different positions in the circumferential direction of the housing 1, so that the hydraulic channel 3 forms a bend before being led to a central hole, and a necking structure 7 is formed at the bend.

Wherein, the hydraulic piston 5, the driving part 6 and the plugging part 10 can all adopt standard parts. For example: the piston, screw and plug wire may be used separately, or alternatively, the piece may be made by itself or custom.

The hydraulic pressure enclasping mechanism that this embodiment provided, hydraulic pressure is evenly bloated tight, and the axiality can reach 3um (micron) after bloating tight, and the straightness that hangs down is within 5um (micron). In addition, expand tightly with loosen easy operation, only need screw up or loosen driving piece 6, the moment of tightening is controllable, easily realizes the high moment of tightening: when the clockwise torsion of the driving piece 6 is 18Nm, the holding torque of the expansion sleeve with the inner diameter of 30mm can reach about 600 Nm; and the dismouting is simple and easy, only needs to loosen driving piece 6, and clearance fit resumes to inflation cover and shell 1, alright light dismouting.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious changes and modifications may be made without departing from the scope of the present invention.

Claims

1. A hydraulic clasping mechanism, comprising:

a housing (1) having a central bore for passage through an expansion sleeve (2), the housing (1) having a hydraulic passage (3) therein leading to the central bore, the other end of the hydraulic passage (3) having an inlet section (4) projecting out of the housing (1);

the expansion sleeve (2) is inserted into the central hole of the shell (1), and two ends of the outer wall of the expansion sleeve (2) are respectively connected with two ends of the central hole of the shell (1) in a sealing manner;

the hydraulic piston (5) is arranged in the inlet section (4) of the hydraulic channel (3) in a sealing and sliding mode;

and the driving piece (6) is connected with the hydraulic piston (5) and is used for driving the hydraulic piston (5) to perform sealing sliding in the hydraulic channel (3).

2. The hydraulic clasping mechanism according to claim 1, characterized in that the drive member (6) is screwed to the housing (1).

3. The hydraulic clasping mechanism according to claim 2, characterized in that the diameter of the driving member (6) is larger than the diameter of the hydraulic piston (5).

4. A hydraulic clasping mechanism according to claim 1, characterized in that the hydraulic channel (3) has a throat structure (7) on its way to the central bore.

5. A hydraulic clasping mechanism as claimed in claim 4, characterized in that the hydraulic channel (3) has a bend before opening into the central bore.

6. A hydraulic enclasping mechanism according to claim 5, characterized in that the throat structure (7) is arranged at a bend of the hydraulic channel (3).

7. The hydraulic clasping mechanism as claimed in claim 5, characterized in that the section of the hydraulic channel (3) which is provided with access to the central bore after bending has a second opening (8), which second opening (8) is closed off by a closure (10).

8. The hydraulic clasping mechanism as claimed in claim 7, characterized in that the second opening (8) is formed in the plane (9) of the housing (1).