CN210068622U - Oil cylinder - Google Patents
Oil cylinder Download PDFInfo
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- CN210068622U CN210068622U CN201920885357.0U CN201920885357U CN210068622U CN 210068622 U CN210068622 U CN 210068622U CN 201920885357 U CN201920885357 U CN 201920885357U CN 210068622 U CN210068622 U CN 210068622U
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- cylinder
- oil
- piston rod
- piston
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- 239000003921 oil Substances 0.000 description 223
- 230000007246 mechanism Effects 0.000 description 9
- 238000005553 drilling Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Abstract
The utility model discloses a hydro-cylinder, include: one-level hydro-cylinder, secondary cylinder and executive rod, wherein: the first-order hydro-cylinder includes: the piston comprises a primary piston cylinder, a primary piston rod, a primary piston sleeve and a primary piston rod plug, wherein the primary piston rod is arranged in the primary piston cylinder and can move along the extension direction of the primary piston cylinder; the secondary oil cylinder comprises: the piston comprises a primary piston cylinder, a secondary piston rod, a secondary piston sleeve and an outer piston cylinder, wherein the primary piston cylinder is sleeved with the secondary piston rod and can move along the extension direction of the primary piston cylinder; the second-stage piston sleeve is fixedly connected with the actuating rod, and an oil path of the second-stage oil cylinder is communicated with an oil path of the first-stage oil cylinder. The utility model discloses a two flexible hydro-cylinders of doublestage on satisfying the basis that current two hydro-cylinders make up the stroke requirement, have reduced the occupation space of hydro-cylinder, and the oil circuit is connected simply.
Description
Technical Field
The utility model relates to a relevant technical field of stock drill carriage and drill jumbo, especially an oil cylinder.
Background
The drilling mechanism used by the anchor rod drill carriage and the rock drilling trolley drills the oil cylinder, the double-oil-cylinder combination is adopted to meet the requirement of large feeding stroke, the oil circuit connection is complex, the occupied space of the oil cylinder is large, and the simplicity of the equipment is seriously influenced.
SUMMERY OF THE UTILITY MODEL
Based on this, it is necessary to provide an oil cylinder for solving the technical problems of the prior art that the number of oil cylinders of the drill carriage speed-multiplying feeding mechanism is large, the occupied space is large, and the hydraulic pipeline connection is complex.
The utility model provides a cylinder, include: one-level hydro-cylinder, secondary cylinder and executive rod, wherein:
the primary oil cylinder comprises: the piston comprises a primary piston cylinder, a primary piston rod, a primary piston sleeve and a primary piston rod plug, wherein the primary piston rod is arranged in the primary piston cylinder and can move along the extension direction of the primary piston cylinder, the primary piston sleeve is arranged at one end of the primary piston cylinder and is sleeved in the primary piston rod, and the primary piston rod plug is arranged at the other end of the primary piston cylinder and tightly pushes the primary piston rod;
the secondary oil cylinder comprises: the secondary piston rod is sleeved on the primary piston cylinder and can move along the extension direction of the primary piston cylinder, the secondary piston sleeve is sleeved on the secondary piston rod, and the outer piston cylinder is sleeved outside the secondary piston sleeve;
the secondary piston sleeve is fixedly connected with the actuating rod, and an oil way of the secondary oil cylinder is communicated with an oil way of the primary oil cylinder.
Further:
the secondary piston sleeve includes: the piston sleeve comprises a secondary piston rod, a primary piston sleeve, a secondary first piston sleeve and a secondary second piston sleeve, wherein the secondary first piston sleeve is sleeved on the secondary piston rod and close to the primary piston sleeve, and the secondary second piston sleeve is sleeved on the secondary piston rod and far away from the primary piston sleeve.
Furthermore, the oil circuit of the primary oil cylinder comprises a primary extending oil circuit and a primary retracting oil circuit which are mutually isolated, the oil circuit of the secondary oil cylinder comprises a secondary extending oil circuit and a secondary retracting oil circuit which are mutually isolated, the primary extending oil circuit is communicated with the secondary extending oil circuit, and the primary retracting oil circuit is communicated with the secondary retracting oil circuit.
Still further, the first-stage extending oil way is arranged in the first-stage piston rod, a first oil hole communicated with the first-stage extending oil way is formed in the end portion, far away from the first-stage piston rod plug, of the first-stage piston rod, the first-stage piston rod plug is provided with a containing cavity for containing the first-stage piston rod, and the first-stage extending oil way is communicated with the containing cavity.
Still further, the first-stage piston rod block is provided with a second oil hole communicated with the accommodating cavity, a third oil hole communicated with the second oil hole is formed in the end portion, close to the first-stage piston rod block, of the first-stage piston cylinder, a first gap is formed between the second-stage piston rod and the first-stage piston cylinder, the first gap is a second-stage extending oil way, the third oil hole is communicated with the second-stage extending oil way, a fourth oil hole communicated with the second-stage extending oil way is formed in the second-stage piston rod, and a second-stage second hydraulic cavity communicated with the fourth oil hole is formed between the second-stage piston rod and the second-stage second piston sleeve.
Still further, the first-stage retraction oil path is arranged in the first-stage piston rod, a first hydraulic cavity is arranged between the first-stage piston rod and the first-stage piston barrel, a fifth oil hole communicated with the first-stage retraction oil path is formed in the end part, far away from the first-stage piston rod, of the first-stage piston rod, and a sixth oil hole respectively communicated with the first-stage retraction oil path and the first hydraulic cavity is formed in the end part, close to the first-stage piston rod, of the first-stage piston rod.
Furthermore, a seventh oil hole communicated with the first-stage first hydraulic cavity is formed in the end portion, close to the first-stage piston sleeve, of the first-stage piston cylinder, a second gap is formed between the second-stage piston rod and the first-stage piston cylinder, the second gap is a second-stage retraction oil path, the seventh oil hole is communicated with the second-stage retraction oil path, an eighth oil hole communicated with the second-stage retraction oil path is formed in the second-stage piston rod, and a second-stage first hydraulic cavity communicated with the eighth oil hole is formed between the second-stage piston rod and the second-stage first piston sleeve.
Furthermore, the secondary piston rod is connected with the primary piston sleeve, and the primary piston sleeve is connected with the primary piston cylinder.
Still further, the hydraulic control system also comprises a flow sensor and/or a pressure sensor which are arranged on the oil path of the primary oil cylinder and the oil path of the secondary oil cylinder.
The utility model discloses a two flexible hydro-cylinders of doublestage on satisfying the basis that current two hydro-cylinders make up the stroke requirement, have reduced the occupation space of hydro-cylinder, and the oil circuit is connected simply.
Drawings
Fig. 1 is a schematic structural diagram of an oil cylinder of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the utility model relates to a structural schematic diagram of an oil cylinder, include: one-level hydro-cylinder, secondary cylinder and executive rod 8, wherein:
the primary oil cylinder comprises: the piston comprises a primary piston cylinder 6, a primary piston rod 1 which is arranged in the primary piston cylinder 6 and can move along the extension direction of the primary piston cylinder 6, a primary piston sleeve 2 which is arranged at one end of the primary piston cylinder 6 and is sleeved in the primary piston rod 1, and a primary piston rod plug 9 which is arranged at the other end of the primary piston cylinder 6 and tightly pushes the primary piston rod 1;
the secondary oil cylinder comprises: the piston comprises a secondary piston rod 5, a secondary piston sleeve and an outer piston barrel 4, wherein the secondary piston rod 5 is sleeved on the primary piston barrel 6 and can move along the extension direction of the primary piston barrel 6;
the secondary piston sleeve is fixedly connected with the actuating rod 8, and an oil path of the secondary oil cylinder is communicated with an oil path of the primary oil cylinder.
Specifically, a primary piston rod 1 is arranged in a primary piston cylinder 6, and two ends of the primary piston rod are tightly pressed by threads of a primary piston sleeve 2 and a primary piston rod plug 9 and assembled into a primary oil cylinder;
the primary piston sleeve 2 and the secondary piston rod 5 are assembled into a piston rod of the secondary oil cylinder by the thread pressing of the primary piston cylinder 6 and the primary piston rod plug 9, a telescopic oil inlet cavity of the secondary oil cylinder is formed inside the secondary oil cylinder, and the secondary oil cylinder is assembled with the outer piston cylinder 4.
The first-stage oil cylinder and the second-stage oil cylinder can simultaneously feed oil due to the communication of the oil paths, and double-stage double stretching is realized.
The utility model discloses a two flexible hydro-cylinders of doublestage on satisfying the basis that current two hydro-cylinders make up the stroke requirement, have reduced the occupation space of hydro-cylinder, and the oil circuit is connected simply.
In one embodiment:
the secondary piston sleeve includes: the second-stage piston sleeve is sleeved on the second-stage piston rod 5 and close to the first-stage piston sleeve 2, and the second-stage piston sleeve 7 is sleeved on the second-stage piston rod 5 and far away from the first-stage piston sleeve 2.
The secondary piston rod 5 and the outer piston cylinder 4, the secondary first piston sleeve 3 and the secondary second piston sleeve 7 are respectively independent operating mechanisms, but hydraulic oil ports of the two independent operating mechanisms are shared hydraulic oil ports. The secondary piston rod 5, the outer piston cylinder 4, the secondary first piston sleeve 3 and the secondary second piston sleeve 7 are respectively connected with different external loads, and the outer piston cylinder 4, the secondary first piston sleeve 3 and the secondary second piston sleeve 7 move along with the secondary piston rod 5 on the basis of independent actions.
In one embodiment, the oil path of the primary oil cylinder comprises a primary extending oil path and a primary retracting oil path which are isolated from each other, the oil path of the secondary oil cylinder comprises a secondary extending oil path and a secondary retracting oil path which are isolated from each other, the primary extending oil path is communicated with the secondary extending oil path, and the primary retracting oil path is communicated with the secondary retracting oil path.
In one embodiment, the primary extending oil path is arranged in the primary piston rod 1, a first oil hole 10 communicated with the primary extending oil path is arranged at the end part, far away from the primary piston rod plug 9, of the primary piston rod 1, the primary piston rod plug 9 is provided with an accommodating cavity for accommodating the primary piston rod 1, and the primary extending oil path is communicated with the accommodating cavity.
In this embodiment, the hydraulic medium enters the accommodating cavity through the first oil hole 10, and the accommodating cavity is used as the first-stage second hydraulic cavity to enable the hydraulic medium to directly push the first-stage piston rod 1 to extend.
In one embodiment, the primary piston rod block 9 is provided with a second oil hole 16 communicated with the accommodating cavity, the end of the primary piston cylinder 6 close to the primary piston rod block 9 is provided with a third oil hole 15 communicated with the second oil hole 16, a first gap is formed between the secondary piston rod 5 and the primary piston cylinder 6, the first gap is the secondary extending oil path, the third oil hole 15 is communicated with the secondary extending oil path, the secondary piston rod 5 is provided with a fourth oil hole 13 communicated with the secondary extending oil path, and a secondary second hydraulic cavity communicated with the fourth oil hole 13 is formed between the secondary piston rod 5 and the secondary second piston sleeve 7.
The hydraulic medium of the embodiment enters the secondary extending oil path through the first oil hole 10, the second oil hole 16 and the third oil hole 15, and enters the secondary second hydraulic cavity through the fourth oil hole 13 to push the secondary piston rod 5 to extend.
In one embodiment, the primary retraction oil path is arranged in the primary piston rod 1, a primary first hydraulic chamber 18 is arranged between the primary piston rod 1 and the primary piston barrel 6, a fifth oil hole 11 communicated with the primary retraction oil path is arranged at the end part, far away from the primary piston rod plug 9, of the primary piston rod 1, and a sixth oil hole 14 respectively communicated with the primary retraction oil path and the second section 18 of the primary retraction oil path is arranged at the end part, near to the primary piston rod plug 9, of the primary piston rod 1.
In the embodiment, the hydraulic medium passes through the fifth oil hole 11, and enters the first-stage first hydraulic cavity 18 through the first-stage retraction oil path and the sixth oil hole 14, and the hydraulic medium pushes the first-stage piston rod to retract in the first-stage first hydraulic cavity 18.
In one embodiment, a seventh oil hole 12 communicated with the first-stage first hydraulic pressure chamber 18 is formed at an end portion of the first-stage piston cylinder 6 close to the first-stage piston sleeve 2, a second gap is formed between the second-stage piston rod 5 and the first-stage piston cylinder 6, the second gap is a second-stage retraction oil path, the seventh oil hole 12 is communicated with the second-stage retraction oil path, an eighth oil hole 17 communicated with the second-stage retraction oil path is formed in the second-stage piston rod 5, and a second-stage first hydraulic pressure chamber communicated with the eighth oil hole 17 is formed between the second-stage piston rod 5 and the second-stage first piston sleeve 3.
In the present embodiment, the first-stage first hydraulic chamber 18 is communicated with the second-stage retraction oil path through the seventh oil hole 12, so that the hydraulic medium can enter the second-stage retraction oil path and push the second-stage piston rod 5 to retract in the second-stage first hydraulic chamber.
In one embodiment, the secondary piston rod 5 is connected to the primary piston sleeve 2, and the primary piston sleeve 2 is connected to the primary piston cylinder 6.
In one embodiment, the hydraulic control system further comprises a flow sensor and/or a pressure sensor which are arranged on the oil path of the primary oil cylinder and the oil path of the secondary oil cylinder.
As the best embodiment of the utility model, a two flexible hydro-cylinders of doublestage, include: one-level hydro-cylinder, secondary cylinder and executive rod 8, wherein:
the primary oil cylinder comprises: the piston comprises a primary piston cylinder 6, a primary piston rod 1 which is arranged in the primary piston cylinder 6 and can move along the extension direction of the primary piston cylinder 6, a primary piston sleeve 2 which is arranged at one end of the primary piston cylinder 6 and is sleeved in the primary piston rod 1, and a primary piston rod plug 9 which is arranged at the other end of the primary piston cylinder 6 and tightly pushes the primary piston rod 1;
the secondary oil cylinder comprises: entangle 6 and can follow of one-level piston cylinder 6 extending direction activity's second grade piston rod 5, cover are in second grade piston cover on the second grade piston rod 5 and cover outer piston cylinder 4 of second grade piston cover, the second grade piston cover includes: the piston comprises a secondary piston rod 5, a primary piston sleeve 2, a secondary first piston sleeve 3, a secondary second piston sleeve 7 and a primary piston sleeve 6, wherein the secondary piston rod 5 is sleeved with the secondary first piston sleeve 3 and is close to the primary piston sleeve 2, the secondary second piston sleeve 7 is sleeved with the secondary piston rod 5 and is far away from the primary piston sleeve 2, the secondary piston rod 5 is connected with the primary piston sleeve 2, and the primary piston sleeve 2 is connected with the primary piston cylinder 6;
the secondary piston sleeve is fixedly connected with the actuating rod 8, and an oil way of the secondary oil cylinder is communicated with an oil way of the primary oil cylinder;
the oil circuit of the primary oil cylinder comprises a primary extending oil circuit and a primary retracting oil circuit which are mutually isolated, the oil circuit of the secondary oil cylinder comprises a secondary extending oil circuit and a secondary retracting oil circuit which are mutually isolated, the primary extending oil circuit is communicated with the secondary extending oil circuit, and the primary retracting oil circuit is communicated with the secondary retracting oil circuit;
the primary extending oil way is arranged in the primary piston rod 1, a first oil hole 10 communicated with the primary extending oil way is arranged at the end part, far away from the primary piston rod plug 9, of the primary piston rod 1, a containing cavity for containing the primary piston rod 1 is arranged on the primary piston rod plug 9, the primary extending oil way is communicated with the containing cavity, a second oil hole 16 communicated with the containing cavity is arranged on the primary piston rod plug 9, a third oil hole 15 communicated with the second oil hole 16 is arranged at the end part, close to the primary piston rod plug 9, of the primary piston cylinder 6, a first gap is arranged between the secondary piston rod 5 and the primary piston cylinder 6, the first gap is the secondary extending oil way, the third oil hole 15 is communicated with the secondary extending oil way, and a fourth oil hole 13 communicated with the secondary extending oil way is arranged on the secondary piston rod 5, a second-stage second hydraulic cavity communicated with the fourth oil hole 13 is formed between the second-stage piston rod 5 and the second-stage second piston sleeve 7;
the primary retraction oil path is arranged in the primary piston rod 1, a primary first hydraulic cavity 18 is arranged between the primary piston rod 1 and the primary piston barrel 6, a fifth oil hole 11 communicated with the primary retraction oil path is arranged at the end part of the primary piston rod 1 far away from the primary piston rod plug 9, a sixth oil hole 14 respectively communicated with the primary retraction oil path and a second section 18 of the primary retraction oil path is arranged at the end part of the primary piston rod 1 close to the primary piston rod plug 9, a seventh oil hole 12 communicated with the primary first hydraulic cavity 18 is arranged at the end part of the primary piston barrel 6 close to the primary piston sleeve 2, a second gap is arranged between the secondary piston rod 5 and the primary piston barrel 6, the second gap is the secondary retraction oil path, and the seventh oil hole 12 is communicated with the secondary retraction oil path, an eighth oil hole 17 communicated with the secondary retraction oil path is formed in the secondary piston rod 5, and a secondary first hydraulic cavity communicated with the eighth oil hole 17 is formed between the secondary piston rod 5 and the secondary first piston sleeve 3.
Specifically, a primary piston rod 1 is arranged in a primary piston cylinder 6, and two ends of the primary piston rod are tightly pressed by threads of a primary piston sleeve 2 and a primary piston rod plug 9 and assembled into a primary oil cylinder;
the primary piston sleeve 2 and the secondary piston rod 5 are assembled into a piston rod of the secondary oil cylinder by the thread pressing of the primary piston cylinder 6 and the primary piston rod plug 9, a telescopic oil inlet cavity of the secondary oil cylinder is formed inside the secondary oil cylinder, a fourth oil hole 13 and an eighth oil hole 17 are used as oil inlet holes of the secondary oil cylinder, and the above parts and the outer piston cylinder 4 are assembled into the secondary oil cylinder;
the oil cylinder has oil inlet holes of a first oil hole 10 and a fifth oil hole 11, a first-stage extending oil path and a first-stage retracting oil path are arranged in a first-stage piston rod 1, a third oil hole 15 is arranged at the upper end of a first-stage piston cylinder 6, a seventh oil hole 12 is arranged at the lower end of the first-stage piston cylinder 6, a fourth oil hole 13 and a sixth oil hole 14 are arranged at the middle end of a second-stage piston rod 5, and a second oil hole 16 is arranged at a first-stage piston rod; a primary telescopic oil cavity is formed between the primary piston rod 1 and the primary piston cylinder 6, a secondary telescopic oil cavity is formed between a secondary first piston sleeve 3 serving as a secondary lower piston sleeve, an outer piston cylinder 4, a secondary piston rod 5 and a secondary second piston sleeve 7 serving as a secondary upper piston sleeve, a retraction oil path between the first stage and the second stage is communicated through an eighth oil hole 17 and a sixth oil hole 14, and an extension oil path between the first stage and the second stage is communicated through a second oil hole 16, a third oil hole 15 and a fourth oil hole 13; the hydraulic medium directly pushes the first-stage piston rod 1 to extend out through the first oil hole 10, and the hydraulic medium oil hole directly pushes the first-stage piston rod 1 to retract through the fifth oil hole 11 and the sixth oil hole 14; the hydraulic medium directly pushes the secondary piston rod 5 to extend through the first oil hole 10, the second oil hole 16, the third oil hole 15 and the fourth oil hole 13, and the hydraulic medium directly pushes the secondary piston rod 5 to retract through the fifth oil hole 11, the sixth oil hole 14, the seventh oil hole 12 and the eighth oil hole 17.
The utility model has the advantages of it is following and positive effect:
(1) the double-stage double-telescopic oil cylinder can replace a double-oil cylinder combination of a hydraulic anchor rod drill carriage.
(2) The oilhole sets up at the hydraulic pressure rod end, and is comparatively hidden, is difficult to take place to interfere with other moving parts.
(3) The oil cylinder is designed by fixing two ends and moving an external cylinder barrel, and is particularly suitable for a drilling machine speed-multiplying propulsion mechanism of an anchor rod drill carriage and a drill jumbo.
(4) When the hydraulic cylinder is pushed out, the design area ratio of the two oil inlet cavities is 1: 2; the propelling speed ratio of the drill carriage speed-multiplying feeding mechanism is 2: 1; when the oil cylinder is arranged on a speed-multiplying feeding mechanism of a drill carriage, the thrust and the propelling speed of the two-stage oil cylinder are just 1:1, and the reasoning that two oil cavities finally act on the propelling mechanism is 1: 1.
(5) When the oil cylinder is used for an automatic drill boom of an anchor rod drilling machine, the propelling speed and the propelling stroke of the feeding mechanism can be measured in real time through the flow sensor, and the propelling force of the feeding oil cylinder can be measured in real time through the pressure sensor, so that the automation of a drill carriage is facilitated.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (9)
1. An oil cylinder, characterized by comprising: one-level hydro-cylinder, secondary cylinder and executive rod (8), wherein:
the primary oil cylinder comprises: the piston comprises a primary piston cylinder (6), a primary piston rod (1) which is arranged in the primary piston cylinder (6) and can move along the extension direction of the primary piston cylinder (6), a primary piston sleeve (2) which is arranged at one end of the primary piston cylinder (6) and is sleeved in the primary piston rod (1), and a primary piston rod plug (9) which is arranged at the other end of the primary piston cylinder (6) and is tightly pressed against the primary piston rod (1);
the secondary oil cylinder comprises: the piston comprises a secondary piston rod (5) which sleeves the primary piston cylinder (6) and can move along the extension direction of the primary piston cylinder (6), a secondary piston sleeve sleeved on the secondary piston rod (5), and an outer piston cylinder (4) sleeved outside the secondary piston sleeve;
the secondary piston sleeve is fixedly connected with the actuating rod (8), and an oil way of the secondary oil cylinder is communicated with an oil way of the primary oil cylinder.
2. The cylinder of claim 1, wherein the secondary piston sleeve comprises: the second-stage piston sleeve is sleeved on the second-stage piston rod (5) and is close to the second-stage first piston sleeve (3) of the first-stage piston sleeve (2) and the second-stage second piston sleeve (7) which is sleeved on the second-stage piston rod (5) and is far away from the first-stage piston sleeve (2).
3. The cylinder according to claim 2, characterized in that the oil path of the primary cylinder comprises a primary extending oil path and a primary retracting oil path which are isolated from each other, the oil path of the secondary cylinder comprises a secondary extending oil path and a secondary retracting oil path which are isolated from each other, the primary extending oil path is communicated with the secondary extending oil path, and the primary retracting oil path is communicated with the secondary retracting oil path.
4. The oil cylinder according to claim 3, characterized in that the primary extending oil path is arranged in the primary piston rod (1), a first oil hole (10) communicated with the primary extending oil path is arranged at the end part, far away from the primary piston rod plug (9), of the primary piston rod (1), the primary piston rod plug (9) is provided with an accommodating cavity for accommodating the primary piston rod (1) to enter, and the primary extending oil path is communicated with the accommodating cavity.
5. The oil cylinder as claimed in claim 4, characterized in that the primary piston rod block (9) is provided with a second oil hole (16) communicated with the accommodating cavity, the end of the primary piston cylinder (6) close to the primary piston rod block (9) is provided with a third oil hole (15) communicated with the second oil hole (16), a first gap is arranged between the secondary piston rod (5) and the primary piston cylinder (6), the first gap is the secondary extended oil path, the third oil hole (15) is communicated with the secondary extended oil path, a fourth oil hole (13) communicated with the secondary extended oil path is arranged on the secondary piston rod (5), and a secondary second hydraulic cavity communicated with the fourth oil hole (13) is arranged between the secondary piston rod (5) and the secondary second piston sleeve (7).
6. The oil cylinder according to claim 3, characterized in that the primary retraction oil path is arranged in the primary piston rod (1), a primary first hydraulic chamber (18) is arranged between the primary piston rod (1) and the primary piston barrel (6), a fifth oil hole (11) communicated with the primary retraction oil path is arranged at the end of the primary piston rod (1) far away from the primary piston rod block (9), and a sixth oil hole (14) respectively communicated with the primary retraction oil path and the primary first hydraulic chamber (18) is arranged at the end of the primary piston rod (1) near the primary piston rod block (9).
7. The oil cylinder according to claim 6, characterized in that a seventh oil hole (12) communicated with the first-stage first hydraulic pressure cavity (18) is arranged at the end part of the first-stage piston barrel (6) close to the first-stage piston sleeve (2), a second gap is arranged between the second-stage piston rod (5) and the first-stage piston barrel (6), the second gap is the second-stage retraction oil path, the seventh oil hole (12) is communicated with the second-stage retraction oil path, an eighth oil hole (17) communicated with the second-stage retraction oil path is arranged on the second-stage piston rod (5), and a second-stage first hydraulic pressure cavity communicated with the eighth oil hole (17) is arranged between the second-stage piston rod (5) and the second-stage first piston sleeve (3).
8. The cylinder according to claim 2, characterized in that the secondary piston rod (5) is connected to the primary piston sleeve (2), and the primary piston sleeve (2) is connected to the primary piston barrel (6).
9. The cylinder according to any one of claims 1 to 8, further comprising a flow sensor and/or a pressure sensor provided on an oil path of the primary cylinder and an oil path of the secondary cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920885357.0U CN210068622U (en) | 2019-06-13 | 2019-06-13 | Oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920885357.0U CN210068622U (en) | 2019-06-13 | 2019-06-13 | Oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210068622U true CN210068622U (en) | 2020-02-14 |
Family
ID=69457475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920885357.0U Active CN210068622U (en) | 2019-06-13 | 2019-06-13 | Oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210068622U (en) |
-
2019
- 2019-06-13 CN CN201920885357.0U patent/CN210068622U/en active Active
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| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 100011 Shenhua building, 22 West Binhe Road, Dongcheng District, Beijing Patentee after: China Shenhua Energy Co.,Ltd. Country or region after: China Patentee after: Shenhua Shendong Coal Group Corp.,Ltd. Patentee after: Hebei Jinglong Intelligent Equipment Co.,Ltd. Address before: 100011 Shenhua building, 22 West Binhe Road, Dongcheng District, Beijing Patentee before: China Shenhua Energy Co.,Ltd. Country or region before: China Patentee before: Shenhua Shendong Coal Group Corp.,Ltd. Patentee before: LANGFANG JINGLONG HEAVY MACHINERY Co.,Ltd. |