CN211648639U - Spiral swing oil cylinder - Google Patents
Spiral swing oil cylinder Download PDFInfo
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- CN211648639U CN211648639U CN202020181159.9U CN202020181159U CN211648639U CN 211648639 U CN211648639 U CN 211648639U CN 202020181159 U CN202020181159 U CN 202020181159U CN 211648639 U CN211648639 U CN 211648639U
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Abstract
The utility model relates to the technical field of hydraulic power machinery, in particular to a spiral swing oil cylinder, which comprises a cylinder body, a piston and a transmission shaft, wherein the cylinder body is in a cylinder shape with two open ends, and the two ends of the cylinder body are respectively provided with a first cylinder cover and a second cylinder cover; the piston is arranged in the cylinder body and is in spiral fit with the inner wall of the cylinder body, a first oil injection port and a second oil injection port for filling hydraulic oil are formed in the outer side of the cylinder body, and the hydraulic oil can apply pressure to the piston and drive the piston to perform spiral motion; the transmission shaft is arranged in the piston, external spiral teeth are arranged outside the transmission shaft, internal spiral teeth meshed with the external spiral teeth are arranged on the inner wall of the piston, and the piston can drive the transmission shaft to rotate through the mutual matching of the internal spiral teeth and the external spiral teeth. The piston is driven to perform spiral motion in the cylinder body by filling hydraulic oil into the cylinder body, the spiral motion of the piston is converted into a rotation mode of the transmission shaft, and a large rotation angle of the transmission shaft is realized in a small space.
Description
Technical Field
The utility model relates to a hydraulic power machinery technical field especially relates to a spiral swing hydro-cylinder.
Background
The hydraulic cylinder has the function of converting hydraulic energy into mechanical energy in a hydraulic system, so that the machine can realize reciprocating motion or swinging motion. Transferring torque and swing angle by injecting hydraulic oil into a hydraulic cylinder is one of the methods of converting a fluid input with energy into a torque and swing angle output. The hydraulic swing oil cylinder is commonly used in two structural forms: a gear rack swing oil cylinder and a blade swing oil cylinder.
The rack and pinion formula swing hydro-cylinder is constituteed and is included: the rack-and-pinion type swing oil cylinder drives the rack to reciprocate through the linear oil cylinder, and the rack is meshed with the gear so as to achieve the purpose of converting the linear reciprocating motion of the oil cylinder into the swinging motion of the gear and outputting the swinging motion. The oil cylinder has the following disadvantages: the external dimension is large, the occupied space is large, and the device is not suitable for occasions with large swing angles.
The blades of the blade swing oil cylinder are arranged in a radial direction, hydraulic oil acts on the blades, and finally the rotation of the driving shaft is realized, and the blade swing oil cylinder has the following defects: the mechanical properties are relatively soft (i.e., the rotational speed decreases rapidly as the load increases) and 360 degrees of rotation cannot be achieved.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a spiral swing hydro-cylinder to overcome the problem that above-mentioned background art provided.
In order to achieve the above purpose, the basic scheme of the utility model is as follows: a spiral swing oil cylinder comprises a cylinder body, a piston and a transmission shaft, wherein the cylinder body is in a cylindrical shape with two open ends, and a first cylinder cover and a second cylinder cover are respectively arranged at two ends of the cylinder body; the piston is arranged in the cylinder body, the piston is in spiral fit with the inner wall of the cylinder body, a first oil injection port and a second oil injection port for filling hydraulic oil are formed in the outer side of the cylinder body, and the hydraulic oil can apply pressure to the piston and drive the piston to move spirally; the transmission shaft is arranged in the piston, outer spiral teeth are arranged outside the transmission shaft, inner spiral teeth meshed with the outer spiral teeth are arranged on the inner wall of the piston, and the piston can drive the transmission shaft to rotate by the mutual matching of the inner spiral teeth and the outer spiral teeth.
Further, an annular sinking platform and an annular flange are integrally formed in the cylinder body, the piston can move in a space formed between the annular sinking platform and the annular flange, and the annular flange can abut against one end of the piston and limit the piston.
Further, the both ends of transmission shaft are equipped with first bearing and second bearing respectively in the cover, first bearing supports with the annular flange and leans on each other, the second bearing supports with the annular heavy platform and leans on each other.
Further, the both ends of piston are equipped with outer piston ring and interior piston ring respectively, outer piston ring and interior piston ring all with piston integrated into one piece, outer piston ring can with cylinder body inner wall screw fit, interior piston ring can with transmission shaft outer wall screw fit.
Further, the first cylinder cover is fixed at one end of the cylinder body, and the first cylinder cover can seal one of the open ends of the cylinder body.
Further, the second cylinder cover is fixed at one end of the transmission shaft, an annular boss is integrally formed on the second cylinder cover, the annular boss extends into the cylinder body, a flange which is abutted against the annular boss is arranged on the transmission shaft, and the flange and the transmission shaft are integrally formed.
Furthermore, all be equipped with the sealing ring that is used for avoiding hydraulic oil to leak on first cylinder cap and the second cylinder cap.
Compared with the prior art, the scheme has the beneficial effects that:
hydraulic oil can be respectively filled into the cylinder body through the first oil filling port and the second oil filling port, the piston is driven to perform spiral motion in the cylinder body, the spiral motion of the piston is converted into a rotation mode of the transmission shaft by utilizing the mutual meshing mode of the outer spiral teeth and the inner spiral teeth between the piston in the cylinder body and the transmission shaft, and the larger rotation angle of the transmission shaft is realized in a smaller space. The rotation angle of the transmission shaft in the scheme is determined by the spiral movement distance of the piston in the cylinder body, and the larger the spiral movement distance of the piston is, the larger the rotation angle of the transmission shaft is.
Drawings
Fig. 1 is a schematic structural diagram of the spiral oscillating cylinder of the present invention.
Reference numerals in the drawings of the specification include: the oil injection device comprises a cylinder body 1, an annular sinking platform 11, an annular flange 12, a first oil injection port 2, a second oil injection port 3, a piston 4, an outer piston ring 41, an inner piston ring 42, a transmission shaft 5, a flange 51, a nut 52, a first cylinder cover 6, a second cylinder cover 7, an annular boss 71, a first bearing 8 and a second bearing 9.
Detailed Description
The invention will be described in further detail by means of specific embodiments with reference to the accompanying drawings:
example (b):
a spiral swing oil cylinder is shown in figure 1 and comprises a cylinder body 1, a piston 4 and a transmission shaft 5, wherein the piston 4 is arranged in the cylinder body 1, and the transmission shaft 5 is arranged in the piston 4. The cylinder body 1 is in a cylindrical shape with two open ends, a first cylinder cover 6 and a second cylinder cover 7 are respectively arranged at the two ends of the cylinder body 1, the first cylinder cover 6 is fixed at one end of the cylinder body 1 through a bolt, and the first cylinder cover 6 can seal one open end of the cylinder body 1; the second cylinder cover 7 is fixed at one end of the transmission shaft 5 through a bolt, an annular boss 71 is integrally formed on the second cylinder cover 7, the annular boss 71 extends into the cylinder body 1, a flange 51 integrally formed with the transmission shaft 5 is arranged on the transmission shaft 5, and the flange 51 and the annular boss 71 are abutted against each other. A first oil filling port 2 and a second oil filling port 3 for filling hydraulic oil are formed in the outer side of the cylinder body 1. Two ends of the piston 4 are respectively provided with an outer piston ring 41 and an inner piston ring 42, the outer piston ring 41 and the inner piston ring 42 are both integrally formed with the piston 4, the outer piston ring 41 can be in spiral fit with the inner wall of the cylinder body 1, and the inner piston ring 42 can be in spiral fit with the outer wall of the transmission shaft 5.
As shown in fig. 1, the outer wall of the piston 4 is provided with outer spiral teeth, the inner wall of the cylinder 1 is provided with inner spiral teeth spirally engaged with the outer spiral teeth, and the piston 4 can be spirally moved in the cylinder 1 by injecting hydraulic oil into the cylinder 1 from the first oil injection port 2 and the second oil injection port 3. An annular sinking platform 11 and an annular flange 12 are integrally formed in the cylinder body 1, so that the piston 4 can only move in a space formed between the annular sinking platform 11 and the annular flange 12, and when one end of the piston 4 is abutted against the annular flange 12, namely the moving distance of the piston 4 reaches the limit, the annular flange 12 limits the piston 4.
As shown in fig. 1, the transmission shaft 5 is externally provided with external spiral teeth, the inner wall of the piston 4 is provided with internal spiral teeth engaged with the external spiral teeth, and the transmission shaft 5 can be driven to rotate by the mutual matching of the internal spiral teeth and the external spiral teeth in the axial movement process of the piston 4. One end of the transmission shaft 5 is sleeved with a first bearing 8, an inner ring of the first bearing 8 is fixed on the transmission shaft 5, the transmission shaft 5 is connected with a nut 52 which is abutted against the inner ring of the first bearing 8, an outer ring of the first bearing 8 is fixed on the inner wall of the cylinder body 1, and the side surface of the outer ring of the first bearing 8 is abutted against the annular flange 12; the other end cover of transmission shaft 5 is equipped with second bearing 9, and the inner circle of second bearing 9 is fixed on transmission shaft 5, and the inner wall at cylinder body 1 is fixed to the outer lane of second bearing 9, and the side of second bearing 9 supports with annular heavy platform 11 each other and leans on.
The specific implementation mode of the scheme is as follows:
when hydraulic oil is injected into the cylinder body 1 from the first oil injection port 2, the piston 4 is subjected to pressure from the hydraulic oil to perform spiral motion, the piston 4 and the transmission shaft 5 are mutually meshed through outer spiral teeth and inner spiral teeth, the spiral motion of the piston 4 is converted into a rotation mode of the transmission shaft 5, the horizontal movement distance of the piston 4 is increased along with the spiral motion process of the piston 4, the rotation angle of the transmission shaft 5 is continuously increased until the piston 4 moves to a limit distance, and the hydraulic oil is injected into the cylinder body 1 from the second oil injection port 3 to enable the piston 4 to perform reverse spiral motion and drive the transmission shaft 5 to rotate reversely; the rotational angle and torque obtained by the helical motion of the piston 4 directly act on the transmission shaft 5, thereby improving the transmission efficiency and obtaining larger torque.
The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (7)
1. A spiral swing oil cylinder is characterized in that: the piston type cylinder comprises a cylinder body (1), a piston (4) and a transmission shaft (5), wherein the cylinder body (1) is in a cylindrical shape with two open ends, and a first cylinder cover (6) and a second cylinder cover (7) are respectively arranged at two ends of the cylinder body (1); the piston (4) is arranged in the cylinder body (1) in a built-in mode, the piston (4) is matched with the cylinder body (1) in a spiral mode, a first oil filling opening (2) and a second oil filling opening (3) used for filling hydraulic oil are formed in the outer side of the cylinder body (1), and the hydraulic oil can apply pressure to the piston (4) and drive the piston (4) to conduct spiral motion; place in piston (4) in transmission shaft (5), be equipped with outer spiral tooth outside transmission shaft (5), piston (4) inner wall is equipped with the interior spiral tooth with outer spiral tooth intermeshing, piston (4) can drive transmission shaft (5) rotation through interior spiral tooth and outer spiral tooth mutually support.
2. The spiral oscillating cylinder of claim 1, wherein: the piston is characterized in that an annular sinking platform (11) and an annular flange (12) are integrally formed in the cylinder body (1), the piston (4) can move in a space formed between the annular sinking platform (11) and the annular flange (12), and the annular flange (12) can abut against one end of the piston (4) and limit the piston (4).
3. The spiral oscillating cylinder of claim 2, wherein: the both ends of transmission shaft (5) are overlapped respectively and are equipped with first bearing (8) and second bearing (9), first bearing (8) support each other with annular flange (12) and lean on, second bearing (9) support each other with annular heavy platform (11).
4. The spiral oscillating cylinder of claim 1, wherein: the two ends of the piston (4) are respectively provided with an outer piston ring (41) and an inner piston ring (42), the outer piston ring (41) and the inner piston ring (42) are integrally formed with the piston (4), the outer piston ring (41) can be in spiral fit with the inner wall of the cylinder body (1), and the inner piston ring (42) can be in spiral fit with the outer wall of the transmission shaft (5).
5. The spiral oscillating cylinder of claim 1, wherein: first cylinder cap (6) are fixed in the one end of cylinder body (1), and first cylinder cap (6) can seal one of them open end of cylinder body (1).
6. The spiral oscillating cylinder of claim 1, wherein: second cylinder cap (7) are fixed in the one end of transmission shaft (5), integrated into one piece has annular boss (71) on second cylinder cap (7), annular boss (71) stretch into in cylinder body (1), and be equipped with flange (51) that lean on each other with annular boss (71) on transmission shaft (5), and flange (51) and transmission shaft (5) integrated into one piece.
7. The spiral oscillating cylinder of claim 1, wherein: and the first cylinder cover (6) and the second cylinder cover (7) are both provided with sealing rings for avoiding leakage of hydraulic oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020181159.9U CN211648639U (en) | 2020-02-18 | 2020-02-18 | Spiral swing oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020181159.9U CN211648639U (en) | 2020-02-18 | 2020-02-18 | Spiral swing oil cylinder |
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| Publication Number | Publication Date |
|---|---|
| CN211648639U true CN211648639U (en) | 2020-10-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020181159.9U Active CN211648639U (en) | 2020-02-18 | 2020-02-18 | Spiral swing oil cylinder |
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| CN (1) | CN211648639U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116292813A (en) * | 2023-05-25 | 2023-06-23 | 哈尔滨船舶锅炉涡轮机研究所(中国船舶集团有限公司第七0三研究所) | Tandem type hydraulic loader |
-
2020
- 2020-02-18 CN CN202020181159.9U patent/CN211648639U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116292813A (en) * | 2023-05-25 | 2023-06-23 | 哈尔滨船舶锅炉涡轮机研究所(中国船舶集团有限公司第七0三研究所) | Tandem type hydraulic loader |
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