CN215394978U - Portable manual pressure device - Google Patents
Portable manual pressure device Download PDFInfo
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- CN215394978U CN215394978U CN202121170313.3U CN202121170313U CN215394978U CN 215394978 U CN215394978 U CN 215394978U CN 202121170313 U CN202121170313 U CN 202121170313U CN 215394978 U CN215394978 U CN 215394978U
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- hydraulic jack
- pressure device
- manual pressure
- oil
- portable manual
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Abstract
The present invention provides a portable manual pressure device comprising: the device comprises a chassis, a travelling mechanism, a hand-operated hydraulic pump and a hydraulic jack; the hand-operated hydraulic pump and the hydraulic jack are arranged on the upper surface of the chassis, and the travelling mechanism is arranged on the lower surface of the chassis; a supporting plate for fixing the shaft sleeve is arranged on the side surface of the hydraulic jack; the hand-operated hydraulic pump is used for pressing hydraulic oil into an oil cylinder of the hydraulic jack so as to provide ejection force of the hydraulic jack, and the shaft is driven to be separated from the shaft sleeve. The easily-carried manual pressure device is convenient for a user to separate the shaft from the shaft sleeve.
Description
Technical Field
The utility model relates to a mechanical device, in particular to a mechanical device for separating a shaft and a shaft sleeve.
Background
Shafts are parts that support and rotate with rotating parts to transmit motion, torque or bending moments, and are common basic parts in the mechanical field. In the operation process of the shaft, motion, torque or bending moment are transmitted, some shafts need to be sealed at the same time, the sealing is generally divided into static sealing and dynamic sealing, the dynamic sealing is divided into rotary sealing and reciprocating sealing, and the phenomenon that the dynamic sealing damages the shaft when equipment with the rotary dynamic sealing runs for a long time is caused. The common shaft sleeve is plated with chrome on the surface, is very smooth and is difficult to directly lift out by hands, and the shaft sleeve is generally provided with a key groove and an O-shaped sealing ring, so that the dismounting resistance is increased, and the shaft sleeve is difficult to dismount.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a manual pressure device which is easy to carry and is convenient for a user to separate a shaft from a shaft sleeve.
In order to solve the above technical problem, the present invention provides a portable manual pressure device, including: the device comprises a chassis, a travelling mechanism, a hand-operated hydraulic pump and a hydraulic jack;
the hand-operated hydraulic pump and the hydraulic jack are arranged on the upper surface of the chassis, and the travelling mechanism is arranged on the lower surface of the chassis;
a supporting plate for fixing the shaft sleeve is arranged on the side surface of the hydraulic jack; the hand-operated hydraulic pump is used for pressing hydraulic oil into an oil cylinder of the hydraulic jack so as to provide ejection force of the hydraulic jack, and the shaft is driven to be separated from the shaft sleeve.
In a preferred embodiment: the walking mechanism comprises a caster wheel and a universal brake wheel.
In a preferred embodiment: the two support plates are oppositely arranged, and a yielding channel for the shaft sleeve to pass through is formed between the two support plates; the shaft sleeve extends outwards along the radial direction to form a circle of skirt edge, and the skirt edge is in limit fit with the supporting plate along the ejection direction so as to keep the supporting plate and the shaft sleeve relatively static.
In a preferred embodiment: the hand-operated hydraulic pump comprises a wrench, a small piston and an oil tank; the wrench and the small piston are arranged in a linkage mode, and the oil tank is communicated to the lower portion of the small piston through an oil pipe and a first one-way valve.
In a preferred embodiment: the hydraulic jack comprises an oil cylinder and a large piston arranged in the oil cylinder; the lower part of the small piston is communicated to the lower part of the large piston through an internal oil way and a second one-way valve.
In a preferred embodiment: the oil cylinder is communicated with the oil tank through the oil return valve when the oil return valve is opened.
In a preferred embodiment: one end of the wrench is an operation end, and the other end of the wrench is a hinged end; and pressing the operating end to drive the hinged end to rotate.
In a preferred embodiment: the hand-operated hydraulic pump and the hydraulic jack are arranged along the width direction of the chassis.
In a preferred embodiment: the surface of the chassis is provided with an accommodating cavity at the ejection end of the hydraulic jack, the supporting plate is arranged in the accommodating cavity, and the accommodating cavity is provided with a yielding opening at the position corresponding to the supporting plate; the shaft is inserted into the accommodating cavity through the abdicating opening and is in butt fit with the ejection end of the hydraulic jack.
In a preferred embodiment: the diameter of the shaft is 120mm or less.
Compared with the prior art, the technical scheme of the utility model has the following beneficial effects:
the utility model provides a portable manual pressure device, wherein a wrench of a hand-operated hydraulic valve moves upwards to drive a small piston to move upwards, oil in an oil tank is sucked into the lower part of the small piston through an oil pipe and a one-way valve, the wrench drives the small piston to move downwards when pressing downwards, oil passages at the lower parts of the oil tank and the small piston are blocked by the one-way valve, the oil at the lower part of the small piston is pressed into the lower part of a large piston of a hydraulic jack through an internal oil passage and the one-way valve, and the pressure at the lower part of the small piston is increased due to the lever action. The area of the large piston is larger than that of the small piston, the oil pressure generated manually is squeezed into the large piston, and the area ratio of the large piston to the small piston is the same as the pressure ratio according to the Pascal principle. Therefore, the hand force is increased from the small piston through the wrench, the force from the small piston to the large piston is increased, and the crank is pulled back and forth during operation. The hand-operated hydraulic valve continuously presses oil into the oil cylinder, and the large piston and the shaft on the large piston are forced to move upwards together due to the continuous increase of the oil pressure in the oil cylinder, so that the purpose of separating the shaft from the shaft sleeve is realized. Because the hand-operated hydraulic valve and the hydraulic jack are both arranged on the chassis, the chassis can be conveniently driven to move through the traveling mechanism, and therefore, the portable function is realized.
Drawings
FIG. 1 is a top view of a preferred embodiment of the present invention;
fig. 2 is a side view of the preferred embodiment of the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" 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," "disposed," "sleeved/connected," "connected," and the like, are used in a broad sense, and for example, "connected" may be a wall-mounted connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, and a communication between two elements, and those skilled in the art will understand the specific meaning of the terms in the present invention specifically.
Referring to fig. 1 and 2, the present embodiment provides a portable manual pressure device including: the device comprises a chassis 1, a traveling mechanism, a hand-operated hydraulic pump 2 and a hydraulic jack 3;
the hand-operated hydraulic pump 2 and the hydraulic jack 3 are arranged on the upper surface of the chassis 1, and the travelling mechanism is arranged on the lower surface of the chassis 1;
a supporting plate 5 for fixing the shaft sleeve 4 is arranged on the side surface of the hydraulic jack 3; the hand-operated hydraulic pump 2 is used for pressing hydraulic oil into an oil cylinder of the hydraulic jack 3 to provide ejecting force of the hydraulic jack 3 so as to drive the shaft 7 to be separated from the shaft sleeve 4.
In this embodiment, in order to fix the shaft sleeve 4, the two support plates 5 are oppositely arranged, and an abdicating channel for the shaft sleeve 4 to pass through is formed between the two support plates 5; the shaft sleeve 4 extends outwards along the radial direction to form a circle of skirt edge, and the skirt edge is in limit fit with the support plate 5 along the ejection direction so as to keep the support plate 5 and the shaft sleeve 4 relatively static.
In order to realize the function of hydraulic ejection, the hand-operated hydraulic pump 2 comprises a wrench, a small piston and an oil tank; the wrench and the small piston are arranged in a linkage mode, and the oil tank is communicated to the lower portion of the small piston through an oil pipe and a first one-way valve. The hydraulic jack 3 comprises an oil cylinder and a large piston arranged in the oil cylinder; the lower part of the small piston is communicated to the lower part of the large piston through an internal oil way and a second one-way valve.
Specifically, one end of the wrench is an operation end, and the other end of the wrench is a hinged end; and pressing the operating end to drive the hinged end to rotate. The hand-operated hydraulic pump 2 and the hydraulic jack 3 are arranged along the width direction of the chassis 1.
After the design, the spanner of the hand-operated hydraulic valve moves upwards to drive the small piston to move upwards, oil in the oil tank is sucked into the lower part of the small piston through the oil pipe and the one-way valve, the spanner drives the small piston to move downwards when pressing downwards, the oil tank and the oil circuit at the lower part of the small piston are blocked by the one-way valve, the oil at the lower part of the small piston is pressed into the lower part of the large piston of the hydraulic jack 3 through the internal oil circuit and the one-way valve, and the pressure of the lower part of the small piston is increased due to the lever action. The area of the large piston is larger than that of the small piston, the oil pressure generated manually is squeezed into the large piston, and the area ratio of the large piston to the small piston is the same as the pressure ratio according to the Pascal principle. Therefore, the hand force is increased from the small piston through the wrench, the force from the small piston to the large piston is increased, and the crank is pulled back and forth during operation. The hand-operated hydraulic valve continuously presses oil into the oil cylinder, and the large piston and the shaft on the large piston are forced to move upwards together due to the continuous increase of the oil pressure in the oil cylinder, so that the purpose of separating the shaft from the shaft sleeve 4 is realized. Because the hand-operated hydraulic valve and the hydraulic jack 3 are both arranged on the chassis 1, the chassis 1 can be conveniently driven to move through the travelling mechanism, and therefore, the function of portability is realized.
After the ejection is finished, the large piston needs to be reset, so that the large piston further comprises an oil return valve, and when the oil return valve is opened, the oil cylinder is communicated with the oil tank through the oil return valve. The high-pressure oil in the oil cylinder can fall back into the oil tank.
In this embodiment, in order to fix the supporting plate 5, an accommodating cavity 6 is formed in the surface of the chassis 1 at the ejection end of the hydraulic jack 3, the supporting plate 5 is arranged in the accommodating cavity 6, and a position-giving opening is formed in the accommodating cavity 6 at a position corresponding to the supporting plate 5; the shaft 7 is inserted into the accommodating cavity 6 through the abdicating opening and is in butt fit with the ejection end of the hydraulic jack 3.
Since this embodiment is a portable device, the ejecting force of the hydraulic jack 3 is limited, and the diameter of the shaft 7 that can be engaged therewith is 120mm or less.
In order to realize the portable function, the walking mechanism comprises a caster wheel 8 and a universal brake wheel 9. The steering and braking of the whole device can be realized through the universal braking wheel, and the convenience of operation is greatly improved.
The above description is only a preferred embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any person skilled in the art can make insubstantial changes in the technical scope of the present invention within the technical scope of the present invention, and the actions infringe the protection scope of the present invention are included in the present invention.
Claims (10)
1. A portable manual pressure device, comprising: the device comprises a chassis, a travelling mechanism, a hand-operated hydraulic pump and a hydraulic jack;
the hand-operated hydraulic pump and the hydraulic jack are arranged on the upper surface of the chassis, and the travelling mechanism is arranged on the lower surface of the chassis;
a supporting plate for fixing the shaft sleeve is arranged on the side surface of the hydraulic jack; the hand-operated hydraulic pump is used for pressing hydraulic oil into an oil cylinder of the hydraulic jack so as to provide ejection force of the hydraulic jack, and the shaft is driven to be separated from the shaft sleeve.
2. A portable manual pressure device according to claim 1 wherein: the walking mechanism comprises a caster wheel and a universal brake wheel.
3. A portable manual pressure device according to claim 1 wherein: the two support plates are oppositely arranged, and a yielding channel for the shaft sleeve to pass through is formed between the two support plates; the shaft sleeve extends outwards along the radial direction to form a circle of skirt edge, and the skirt edge is in limit fit with the supporting plate along the ejection direction so as to keep the supporting plate and the shaft sleeve relatively static.
4. A portable manual pressure device according to claim 1 wherein: the hand-operated hydraulic pump comprises a wrench, a small piston and an oil tank; the wrench and the small piston are arranged in a linkage mode, and the oil tank is communicated to the lower portion of the small piston through an oil pipe and a first one-way valve.
5. A portable manual pressure device according to claim 4 wherein: the hydraulic jack comprises an oil cylinder and a large piston arranged in the oil cylinder; the lower part of the small piston is communicated to the lower part of the large piston through an internal oil way and a second one-way valve.
6. A portable manual pressure device according to claim 5 wherein: the oil cylinder is communicated with the oil tank through the oil return valve when the oil return valve is opened.
7. A portable manual pressure device according to claim 6 wherein: one end of the wrench is an operation end, and the other end of the wrench is a hinged end; and pressing the operating end to drive the hinged end to rotate.
8. A portable manual pressure device according to claim 7 wherein: the hand-operated hydraulic pump and the hydraulic jack are arranged along the width direction of the chassis.
9. A portable manual pressure device according to claim 8 wherein: the surface of the chassis is provided with an accommodating cavity at the ejection end of the hydraulic jack, the supporting plate is arranged in the accommodating cavity, and the accommodating cavity is provided with a yielding opening at the position corresponding to the supporting plate; the shaft is inserted into the accommodating cavity through the abdicating opening and is in butt fit with the ejection end of the hydraulic jack.
10. A portable manual pressure device according to claim 9 wherein: the diameter of the shaft is 120mm or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121170313.3U CN215394978U (en) | 2021-05-27 | 2021-05-27 | Portable manual pressure device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121170313.3U CN215394978U (en) | 2021-05-27 | 2021-05-27 | Portable manual pressure device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215394978U true CN215394978U (en) | 2022-01-04 |
Family
ID=79677498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121170313.3U Active CN215394978U (en) | 2021-05-27 | 2021-05-27 | Portable manual pressure device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215394978U (en) |
-
2021
- 2021-05-27 CN CN202121170313.3U patent/CN215394978U/en active Active
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