CN201747695U - Combined two-way long-stroke push-and-pull hydraulic cylinder - Google Patents
Combined two-way long-stroke push-and-pull hydraulic cylinder Download PDFInfo
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- CN201747695U CN201747695U CN2010202647278U CN201020264727U CN201747695U CN 201747695 U CN201747695 U CN 201747695U CN 2010202647278 U CN2010202647278 U CN 2010202647278U CN 201020264727 U CN201020264727 U CN 201020264727U CN 201747695 U CN201747695 U CN 201747695U
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- piston rod
- outer cylinder
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Abstract
The utility model discloses a combined two-way long-stroke push-and-pull hydraulic cylinder, which comprises an outer cylinder and an inner cylinder. The outer cylinder comprises an outer cylinder barrel, an outer cylinder ear, an outer cylinder piston and an outer cylinder piston rod. The outer cylinder piston is movably arranged in the outer cylinder barrel. One end of the outer cylinder piston rod is fixed on the outer cylinder piston, and the other end is fixedly connected with the outer cylinder ear. The outer cylinder barrel is tightly connected with the outer cylinder piston rod. The inner cylinder comprises an inner cylinder barrel, an inner cylinder piston and an inner cylinder piston rod. The inner cylinder barrel is arranged in the outer cylinder piston rod. The bottom of the inner cylinder barrel is adjacent to the outer cylinder ear. The inner cylinder piston is movably arranged in the inner cylinder barrel. One end of the inner cylinder piston rod is fixed on the inner cylinder piston. The inner cylinder barrel is tightly connected with the inner cylinder piston rod. The outer cylinder barrel is fixedly connected with the inner cylinder barrel. The axial size is shortened 40 per cent so that the drilling machine has compact structure and is suitable for tunnel and coal mine pit; pullback force can meet the demand; length of drilling machine frame is shortened and weight is reduced; movement is flexible and convenient.
Description
Technical field
The utility model relates to a kind of rig oil hydraulic cylinder, relate in particular to a kind of combined bidirectional long-stroke push-and-pull hydraulic cylinder.
Background technique
Oil hydraulic cylinder is the important process element that advances drilling rod in rig when work, and the stroke of oil hydraulic cylinder is by the length decision of drilling rod, and for common double-action single-stage cylinder, the stroke of oil hydraulic cylinder has determined initial length of installation and the frame length and even the main frame length of oil hydraulic cylinder.The frame length of present all kinds of rigs all is subjected to the restriction of oil hydraulic cylinder length.Especially in usage space circumscribed occasion is arranged, long stroke, short initial length oil hydraulic cylinder are that all kinds of rigs press for.Though existing twin-stage cylinder stroke is long, because the twin-stage cylinder structure limits, retracting force is too little can not to be satisfied rig far away and returns the needs that drag drilling rod, so the application of twin-stage cylinder is restricted on rig.
The model utility content
The model utility purpose: the purpose of this utility model is to overcome the deficiencies in the prior art, a kind of combined bidirectional long-stroke push-and-pull hydraulic cylinder is provided, by position relative fixed with inner cylinder tube and outer cylinder, interior outer cylinder body reversing motion has realized that equipment integral axially reduces and stroke is constant or increase.
Technological scheme: the utility model is achieved through the following technical solutions, the utility model comprises outer cylinder body and inner cylinder body, described outer cylinder body comprises outer cylinder, outer shell ear, outer shell piston and internal cylinder piston rod, wherein: the activity of outer shell piston is located in the outer cylinder, internal cylinder piston rod one end is fixed on the outer shell piston, the other end and outer shell ear are fixedly linked, and sealing links to each other outer cylinder with internal cylinder piston rod; Described inner cylinder body comprises inner cylinder tube, inner casing piston and interior cylinder piston rod, wherein: inner cylinder tube is located in the internal cylinder piston rod, the bottom of inner cylinder tube is adjacent with the outer shell ear, the activity of inner casing piston is located in the inner cylinder tube, interior cylinder piston rod one end is fixed on the inner casing piston, and rod seal links to each other inner cylinder tube with inner casing; Described outer cylinder and inner cylinder tube are fixedly linked.
Described internal cylinder piston rod is the box type piston bar, and inner cylinder tube is located at the hollow parts of internal cylinder piston rod, both can reduce integral device volume more can reduce the axial length of whole oil hydraulic cylinder.
In order to get rid of air left in the oil hydraulic cylinder, described outer shell ear is provided with vent.
Described outer cylinder is provided with first hydraulic fluid port and second hydraulic fluid port, and wherein: the rod chamber of first hydraulic fluid port and outer cylinder body links to each other, and the rodless cavity of second hydraulic fluid port and outer cylinder body links to each other; Cylinder piston rod is provided with the 3rd hydraulic fluid port and the 4th hydraulic fluid port in described, and wherein: the rod chamber of the 3rd hydraulic fluid port and inner cylinder body links to each other, and the rodless cavity of the 4th hydraulic fluid port and inner cylinder body links to each other.
Described outer cylinder is provided with upper saw pulley, and upper saw pulley plays the balancing gravity effect when oil cylinder stretches out, to avoid the oil cylinder center curvature.
The area of the cross section of the rodless cavity of described inner cylinder body and outer cylinder body equates that the area of the cross section of the rod chamber of inner cylinder body and outer cylinder body equates.
Described first hydraulic fluid port links to each other by oil pipe with the 3rd hydraulic fluid port, and second hydraulic fluid port links to each other by oil pipe with the 4th hydraulic fluid port.
During the utility model work: in the hydraulic cylinder works process, inner cylinder tube and outer cylinder do not have axial relative movement; When hydraulic oil entered the rodless cavity of inside and outside cylinder body, internal cylinder piston rod and interior cylinder piston rod stretched out the generation propelling force respectively round about; When hydraulic oil enters the rod chamber of inside and outside cylinder, inside and outside cylinder piston rod is inwardly withdrawn respectively and is produced retracting force, the sectional area of the annular effect of the rod chamber of outer cylinder body and inner cylinder body and rodless cavity equates respectively, and therefore, the pushing away of inside and outside oil hydraulic cylinder, pulling force also equate respectively.
Beneficial effect: the utility model is compared with general single-stage double-acting hydraulic cylinder, same stroke, axial dimension will lack 40%, uses this oil cylinder can shorten frame length in rig, make the structure of rig become compact, adapt to more under the environment in tunnel, tunnel, colliery and use.Realized that the long stroke of oil hydraulic cylinder is short, initial length is short; And pull-back force can be satisfied the demand; Use this oil hydraulic cylinder can make borer frame shorten length, weight saving; Move flexible.
Description of drawings
Fig. 1 is a work schematic representation of the present utility model;
Fig. 2 is a structural representation of the present utility model.
Embodiment
Below embodiment of the present utility model is elaborated; present embodiment is being to implement under the prerequisite with technical solutions of the utility model; provided detailed mode of execution and concrete operating process, but protection domain of the present utility model is not limited to following embodiment.
As depicted in figs. 1 and 2, present embodiment comprises outer cylinder body and inner cylinder body, described outer cylinder body comprises outer cylinder 1, outer shell ear 2, outer shell piston 3 and internal cylinder piston rod 4, wherein: 3 activities of outer shell piston are located in the outer cylinder 1, internal cylinder piston rod 4 one ends are fixed on the outer shell piston 3, the other end and outer shell ear 2 are fixedly linked, and 4 sealings link to each other outer cylinder 1 with internal cylinder piston rod;
Described inner cylinder body comprises inner cylinder tube 5, inner casing piston 6 and interior cylinder piston rod 7, wherein: inner cylinder tube 5 is located in the internal cylinder piston rod 4, the bottom of inner cylinder tube 5 is adjacent with outer shell ear 2,6 activities of inner casing piston are located in the inner cylinder tube 5, interior cylinder piston rod 7 one ends are fixed on the inner casing piston 6, and inner cylinder tube 5 links to each other with interior cylinder piston rod 7 sealings;
Described outer cylinder 1 links to each other by outer cylinder cap 8 sealings with internal cylinder piston rod 4, and described inner cylinder tube 5 links to each other by interior cylinder cap 9 sealings with interior cylinder piston rod 7;
Described outer cylinder 1 and inner cylinder tube 5 are fixedly linked by screw thread.
Described internal cylinder piston rod 4 is box type piston bars, and inner cylinder tube 5 is located at the hollow parts of internal cylinder piston rod 4, both can reduce integral device volume more can reduce the axial length of whole oil hydraulic cylinder.
Described outer shell ear 2 is provided with vent 10, can get rid of air left in the oil hydraulic cylinder.
Described outer cylinder 1 is provided with first hydraulic fluid port 11 and second hydraulic fluid port 12, and wherein: the rod chamber of first hydraulic fluid port 11 and outer cylinder body links to each other, and the rodless cavity of second hydraulic fluid port 12 and outer cylinder body links to each other;
Cylinder piston rod 7 is provided with the 3rd hydraulic fluid port 13 and the 4th hydraulic fluid port 14 in described, and wherein: the rod chamber of the 3rd hydraulic fluid port 13 and inner cylinder body links to each other, and the rodless cavity of the 4th hydraulic fluid port 14 and inner cylinder body links to each other.
Described outer cylinder 1 is provided with upper saw pulley 15, and upper saw pulley 15 plays the balancing gravity effect when oil cylinder stretches out, to avoid the oil cylinder center curvature.
The area of the cross section of the rodless cavity of described inner cylinder body and outer cylinder body equates that the area of the cross section of the rod chamber of inner cylinder body and outer cylinder body equates.
Described first hydraulic fluid port 11 links to each other by oil pipe with the 3rd hydraulic fluid port 13, and second hydraulic fluid port 12 links to each other by oil pipe with the 4th hydraulic fluid port 14.
When hydraulic oil entered the rodless cavity of inside and outside cylinder body, internal cylinder piston rod 4 and interior cylinder piston rod 7 stretched out the generation propelling force respectively round about; When hydraulic oil enters the rod chamber of inside and outside cylinder, inside and outside cylinder piston rod 4 is inwardly withdrawn respectively and is produced retracting force, because the sectional area of the rod chamber of outer cylinder body and inner cylinder body and the annular effect of rodless cavity equates respectively, therefore, the pushing away of inside and outside oil hydraulic cylinder, pulling force also equate respectively.
Claims (7)
1. combined bidirectional long-stroke push-and-pull hydraulic cylinder, comprise outer cylinder body and inner cylinder body, it is characterized in that: described outer cylinder body comprises outer cylinder (1), outer shell ear (2), outer shell piston (3) and internal cylinder piston rod (4), wherein: outer shell piston (3) activity is located in the outer cylinder (1), internal cylinder piston rod (4) one ends are fixed on the outer shell piston (3), the other end and outer shell ear (2) are fixedly linked, and sealing links to each other outer cylinder (1) with internal cylinder piston rod (4);
Described inner cylinder body comprises inner cylinder tube (5), inner casing piston (6) and interior cylinder piston rod (7), wherein: inner cylinder tube (5) is located in the internal cylinder piston rod (4), the bottom of inner cylinder tube (5) is adjacent with outer shell ear (2), inner casing piston (6) activity is located in the inner cylinder tube (5), interior cylinder piston rod (7) one ends are fixed on the inner casing piston (6), and sealing links to each other inner cylinder tube (5) with interior cylinder piston rod (7);
Described outer cylinder (1) and inner cylinder tube (5) are fixedly linked.
2. combined bidirectional long-stroke push-and-pull hydraulic cylinder according to claim 1 is characterized in that: described internal cylinder piston rod (4) is the box type piston bar, and inner cylinder tube (5) is located at the hollow parts of internal cylinder piston rod (4).
3. combined bidirectional long-stroke push-and-pull hydraulic cylinder according to claim 1 is characterized in that: described outer shell ear (2) is provided with vent (10).
4. combined bidirectional long-stroke push-and-pull hydraulic cylinder according to claim 1, it is characterized in that: described outer cylinder (1) is provided with first hydraulic fluid port (11) and second hydraulic fluid port (12), wherein: the rod chamber of first hydraulic fluid port (11) and outer cylinder body links to each other, and the rodless cavity of second hydraulic fluid port (12) and outer cylinder body links to each other;
Cylinder piston rod (7) is provided with the 3rd hydraulic fluid port (13) and the 4th hydraulic fluid port (14) in described, and wherein: the rod chamber of the 3rd hydraulic fluid port (13) and inner cylinder body links to each other, and the rodless cavity of the 4th hydraulic fluid port (14) and inner cylinder body links to each other.
5. combined bidirectional long-stroke push-and-pull hydraulic cylinder according to claim 1 is characterized in that: described outer cylinder (1) is provided with upper saw pulley (15).
6. combined bidirectional long-stroke push-and-pull hydraulic cylinder according to claim 4 is characterized in that: the area of the cross section of the rodless cavity of described inner cylinder body and outer cylinder body equates that the area of the cross section of the rod chamber of inner cylinder body and outer cylinder body equates.
7. combined bidirectional long-stroke push-and-pull hydraulic cylinder according to claim 4 is characterized in that: described first hydraulic fluid port (11) links to each other by oil pipe with the 3rd hydraulic fluid port (13), and second hydraulic fluid port (12) links to each other by oil pipe with the 4th hydraulic fluid port (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202647278U CN201747695U (en) | 2010-07-20 | 2010-07-20 | Combined two-way long-stroke push-and-pull hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202647278U CN201747695U (en) | 2010-07-20 | 2010-07-20 | Combined two-way long-stroke push-and-pull hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201747695U true CN201747695U (en) | 2011-02-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202647278U Expired - Fee Related CN201747695U (en) | 2010-07-20 | 2010-07-20 | Combined two-way long-stroke push-and-pull hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201747695U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101893016A (en) * | 2010-07-20 | 2010-11-24 | 王思聪 | Combined bidirectional long-stroke push-and-pull hydraulic cylinder |
| CN103112677A (en) * | 2013-02-19 | 2013-05-22 | 长沙中联重科环卫机械有限公司 | Trash compactor and discharge method of trash compactor |
| CN108343243A (en) * | 2018-02-11 | 2018-07-31 | 温州燧人智能科技有限公司 | A kind of Novel air cylinder and pulp shooting machine |
| CN113864285A (en) * | 2021-09-30 | 2021-12-31 | 中船重工中南装备有限责任公司 | Double-acting feeding oil cylinder of digging and anchoring machine |
-
2010
- 2010-07-20 CN CN2010202647278U patent/CN201747695U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101893016A (en) * | 2010-07-20 | 2010-11-24 | 王思聪 | Combined bidirectional long-stroke push-and-pull hydraulic cylinder |
| CN103112677A (en) * | 2013-02-19 | 2013-05-22 | 长沙中联重科环卫机械有限公司 | Trash compactor and discharge method of trash compactor |
| CN108343243A (en) * | 2018-02-11 | 2018-07-31 | 温州燧人智能科技有限公司 | A kind of Novel air cylinder and pulp shooting machine |
| CN108343243B (en) * | 2018-02-11 | 2020-06-16 | 温州燧人智能科技有限公司 | Cylinder and patching machine |
| CN113864285A (en) * | 2021-09-30 | 2021-12-31 | 中船重工中南装备有限责任公司 | Double-acting feeding oil cylinder of digging and anchoring machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110216 Termination date: 20130720 |