CN216009118U - Jacking self-locking hydraulic cylinder - Google Patents
Jacking self-locking hydraulic cylinder Download PDFInfo
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- CN216009118U CN216009118U CN202121867346.3U CN202121867346U CN216009118U CN 216009118 U CN216009118 U CN 216009118U CN 202121867346 U CN202121867346 U CN 202121867346U CN 216009118 U CN216009118 U CN 216009118U
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Abstract
The utility model provides a jacking self-locking hydraulic cylinder, which comprises: the main cylinder barrel and the first piston assembly with hydraulic fluid port A, hydraulic fluid port B have hydraulic fluid port C, vice cylinder barrel and the second piston assembly of hydraulic fluid port D, the oil circuit, first piston assembly includes first piston and first piston rod, and the second piston assembly includes second piston and second piston rod, wherein: the auxiliary cylinder barrel is positioned on one side of the first ejection end and is fixed with the main cylinder barrel; the auxiliary cylinder barrel is also provided with an air port; a locking groove is formed in the first piston rod; the second piston rod is provided with a locking block which is elastically connected with the second piston rod, and the locking block is positioned in the locking groove; the oil port A comprises a main oil port and an auxiliary oil port; the oil port C is connected with an auxiliary oil port through a pipeline (17), and a first check valve is arranged between the oil port C and the auxiliary oil port; the oil circuit comprises a main oil circuit connected with the main oil port and the oil port B and a branch circuit connected with the oil port D and the main oil circuit, and a second one-way valve is arranged at the joint of the main oil port and the main oil circuit. The utility model can realize self-locking without manually moving the bolt or the cushion block.
Description
Technical Field
The utility model relates to the technical field of hydraulic cylinders, in particular to a jacking self-locking hydraulic cylinder.
Background
The self-locking hydraulic cylinder has wide requirements in the engineering field, for example, in the mechanical field of a plurality of lifting equipment such as metallurgy, coal mines, engineering machinery, sanitation trucks and the like, the hydraulic cylinder needs to be locked in order to prevent a workpiece from being displaced under the action of external force or self weight (the hydraulic cylinder is vertically placed) when the workpiece stops working. At present, the methods for locking the piston rod of the hydraulic cylinder mainly comprise the following steps: firstly, a hydraulic lock is used in a hydraulic system to prevent the flow of hydraulic oil to lock a piston rod of a hydraulic cylinder; this locking method has significant disadvantages: the hydraulic cylinder barrel and the hydraulic lock are internally released, so that a piston rod of the hydraulic cylinder is not easy to lock. And secondly, a bolt mechanism or a cushion block is adopted to fix the piston rod, and the bolt or the cushion block needs to be manually moved in the locking method.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems in the background art, the utility model provides a jacking self-locking hydraulic cylinder.
The utility model provides a jacking self-locking hydraulic cylinder, which comprises: have hydraulic fluid port A, hydraulic fluid port B's master cylinder and install the first piston assembly in master cylinder, have hydraulic fluid port C, hydraulic fluid port D's vice cylinder and install the second piston assembly in vice cylinder, and be used for carrying the oil circuit of hydraulic oil, first piston assembly is including being located first piston between hydraulic fluid port A and the hydraulic fluid port B and the first piston rod of being connected with first piston, second piston assembly is including being located hydraulic fluid port D and being close to the second piston of hydraulic fluid port C one side and the second piston rod of being connected with the second piston, and the one end of first piston rod is located the outside of master cylinder in order to form first ejection end, the one end of second piston rod is located the outside of master cylinder in order to form the second ejection end, wherein:
the auxiliary cylinder barrel is positioned on one side of the first ejection end and fixed with the main cylinder barrel, and the second ejection end faces the first piston rod; the auxiliary cylinder barrel is also provided with an air port which is positioned at one end far away from the second ejection end;
the first piston rod is provided with a plurality of locking grooves which are sequentially arranged along the length direction of the first piston rod, and the side wall of one side of each locking groove, which is close to the first piston, is an inclined surface which inclines towards the direction of the first piston;
the second ejection end of the second piston rod is provided with a locking block which is elastically connected with the second ejection end, the locking block is provided with an inclined surface, the locking block is positioned in the locking groove, and the inclined surface of the locking block is attached to the inclined surface of the locking groove;
the oil port A is positioned on one side of the oil port B close to the first ejection end and comprises a main oil port and an auxiliary oil port;
the oil port C is positioned between two ends of the auxiliary cylinder barrel and is connected with the auxiliary oil port through a pipeline (17), and a first check valve enabling hydraulic oil to flow to the auxiliary oil port in a one-way mode is arranged between the oil port C and the auxiliary oil port; the oil port D is positioned on one side of the oil port C close to the second ejection end;
the oil circuit comprises a main oil circuit which is connected with the main oil port and the oil port B and a branch circuit which is connected with the oil port D and the main oil circuit, and a second one-way valve 1(0) which enables hydraulic oil to flow to the oil port B in a one-way mode is arranged at the joint of the main oil port and the main oil circuit.
Preferably, a liquid outlet is formed in the bottom of the locking groove, a liquid outlet is formed in the side wall of the first piston rod, which is far away from the locking groove, and the liquid outlet is located at one end close to the first piston; and a flow passage for connecting each liquid outlet and the liquid outlet is arranged in the first piston rod.
Preferably, the second piston rod has a guide hole extending from the second end to the other end thereof, and an elastic element and a guide rod arranged in the elastic hole, one end of the guide rod abuts against the elastic element, and the other end thereof is located outside the guide hole; the locking block is fixedly connected with the guide rod.
Preferably, the resilient element comprises a spring.
Preferably, the ejecting end of the main cylinder barrel is provided with a mounting seat detachably fixed with the main cylinder barrel, and the auxiliary cylinder barrel is fixedly mounted on the mounting seat.
Preferably, the mounting seat comprises a sleeve and a supporting part fixedly mounted on the sleeve, the sleeve is sleeved on the main cylinder barrel and is in threaded fit with the main cylinder barrel, and the supporting part is positioned on one side of the sleeve, which is close to the ejecting end of the main cylinder barrel; the auxiliary cylinder barrel is fixedly arranged on the supporting part.
Preferably, the side wall of the main cylinder barrel is provided with a mounting block, and the mounting block is provided with a mounting hole.
According to the utility model, the auxiliary cylinder barrel is arranged at the ejection end of the main cylinder barrel, the locking groove is arranged on the first piston rod, and the side wall of the locking groove, which is close to the first piston, is an inclined surface inclined towards the first piston; a locking block with an inclined plane is arranged at the end part of the second piston rod, the locking block is positioned in the locking groove, and the inclined plane of the locking groove is attached to the inclined plane of the locking groove; meanwhile, the oil port A is positioned at one side close to the ejection end of the main cylinder, and the oil port A comprises a main oil port and an auxiliary oil port; an air port is formed in one end, far away from the ejection end, of the auxiliary cylinder barrel, an oil port C in the auxiliary cylinder barrel is located between two ends of the auxiliary cylinder barrel and is connected with the auxiliary oil port through a pipeline, and a first check valve enabling hydraulic oil to flow to the auxiliary oil port in a one-way mode is arranged between the oil port C and the auxiliary oil port; the oil port D is positioned on one side of the oil port C close to the ejection end of the auxiliary cylinder barrel, the oil path comprises a main oil path for connecting the main oil port and the oil port B and a branch for connecting the oil port D and the main oil path, and a second one-way valve for enabling hydraulic oil to flow to the oil port B in a one-way mode is arranged at the joint of the main oil port and the main oil path. Therefore, the purpose of automatic locking can be realized, and the bolt or the cushion block does not need to be moved manually.
Drawings
Fig. 1 is a schematic structural view of a jacking self-locking hydraulic cylinder provided by the utility model.
FIG. 2 is a partial enlarged view of FIG. 1
Fig. 3 is a schematic structural view of the auxiliary cylinder barrel in the jacking self-locking hydraulic cylinder provided by the utility model.
Fig. 4 is a schematic view of a flow direction of hydraulic oil in a jacking process of the first piston rod in the jacking self-locking hydraulic cylinder provided by the utility model.
Fig. 5 is a schematic flow diagram of hydraulic oil in a retraction process of the first piston rod in the jacking self-locking hydraulic cylinder according to the present invention.
Detailed Description
Referring to fig. 1-3, the utility model provides a jacking self-locking hydraulic cylinder, which comprises: the hydraulic cylinder comprises a main cylinder barrel 1 with an oil port A5 and an oil port B6, a first piston assembly installed in the main cylinder barrel 1, an auxiliary cylinder barrel 3 with an oil port C7 and an oil port D8, a second piston assembly installed in the auxiliary cylinder barrel 3, and an oil path 9 for conveying hydraulic oil, wherein the first piston assembly comprises a first piston located between the oil port A5 and the oil port B and a first piston rod 2 connected with the first piston, the second piston assembly comprises a second piston located on one side of the oil port D8 close to the oil port C7 and a second piston rod 4 connected with the second piston, one end of the first piston rod 2 is located outside the main cylinder barrel 1 to form a first ejection end, and one end of the second piston rod 4 is located outside the auxiliary cylinder barrel 3 to form a second ejection end, wherein:
the auxiliary cylinder barrel 3 is positioned on one side of the first ejection end and fixed with the main cylinder barrel 1, and the second ejection end faces the first piston rod 2; the auxiliary cylinder barrel 3 is also provided with an air port which is positioned at one end far away from the second ejection end. The first piston rod 2 is provided with a plurality of locking grooves 11 which are sequentially arranged along the length direction of the first piston rod, and the side wall of one side of each locking groove 11, which is close to the first piston, is an inclined surface which inclines towards the direction of the first piston. The second ejecting end of second piston rod 4 is equipped with rather than elastic connection's locking piece 12, locking piece 12 has the inclined plane, locking piece 12 is located locking groove 11, and its inclined plane and the laminating of the inclined plane of locking groove 11 to make locking piece 12 can cross locking groove 11 along the inclined plane along the jacking of first piston rod 2, can not interfere the jacking action of first piston rod 2, but can prevent under the jacking state that first piston rod 2 from retreating and retracting, in order to reach the purpose of auto-lock.
The oil port a5 is located at one side near the first jack-out end, and the oil port a5 includes a main oil port 51 and a sub oil port 52. The port C7 is located between the two ends of the auxiliary cylinder 3, the port C7 is connected to the auxiliary port 52 through the pipeline 17, and a first check valve 18 for making the hydraulic oil flow to the auxiliary port 52 in one direction is provided between the port C7 and the auxiliary port 52, so that the hydraulic oil cannot flow to the port C7 in the reverse direction.
The oil port D8 is positioned at one side close to the second ejection end; the oil passage 9 includes a main oil passage 91 connecting the main oil port 51 and the oil port B6, and a branch 92 connecting the oil port D8 and the main oil passage 91, and a second check valve 10 for allowing hydraulic oil to flow in one direction to the oil port B6 is provided at a junction of the main oil port 51 and the main oil passage 91. So that the hydraulic oil can only flow from the main oil path 91 to the branch path 92 and finally enters the auxiliary cylinder barrel 3 from the port D and then flows into the main cylinder barrel 2 from the port C and the auxiliary port 52 when flowing from the port B to the port a.
When the first piston rod 2 needs to retract, hydraulic oil in the main cylinder barrel 1 can only enter the auxiliary cylinder barrel 3 from the oil port D8 to firstly push the second piston to move towards the oil port C7, so that the locking block 12 is separated from the locking groove 11 to enter an unlocking state, at this moment, the first piston rod 2 can freely retract, and along with the entry of the hydraulic oil, when the second piston is pushed to the side of the oil port C7 far away from the oil port D8, the hydraulic oil enters the main cylinder barrel 1 through the oil port C7 again to push the first piston rod 2 to retract.
Referring to fig. 4-5, the specific working principle is as follows: first piston rod 2 is at the jacking in-process, and locking piece 12 crosses locking groove 11 along the inclined plane along the jacking of first piston rod 2, can not interfere the jacking action of first piston rod 2, nevertheless can hinder first piston rod 2 and retract to reach the purpose of auto-lock. In the retraction process of the first piston rod 2, hydraulic oil in the main cylinder barrel 1 can only enter the auxiliary cylinder barrel 3 from the oil port D8 firstly to push the second piston to move towards the oil port C7 firstly, so that the locking block 12 is separated from the locking groove 11 to be unlocked, at the moment, the first piston rod 2 can be retracted freely, and when the second piston is pushed to the side of the oil port C7 far away from the oil port D8, the hydraulic oil enters the main cylinder barrel 1 through the oil port C7 to push the first piston rod 2 to retract. When the first piston rod 2 is lifted again, the hydraulic oil in the auxiliary cylinder 2 flows from the oil port D8 to the oil port B6 to enter an emptying state, and the hydraulic oil in the main cylinder 1 can only flow from the main oil port 51 to the oil port B6 to provide power for the lifting operation.
Therefore, the automatic locking device can achieve the purpose of automatic locking without manually moving the bolt or the cushion block.
In addition, in the present embodiment, the second piston rod 4 has a guide hole extending from the second ejecting end to the other end thereof, and an elastic element 13 and a guide rod 14 disposed in the elastic hole, one end of the guide rod 14 abuts against the elastic element 13, and the other end thereof is located outside the guide hole; the locking piece 12 is fixedly connected with the guide rod 14, so that the locking piece 12 is elastically connected with the second piston rod 4. In particular, the elastic element 13 comprises a spring.
In this embodiment, the ejecting end of main cylinder barrel 1 is equipped with rather than dismantling fixed mount pad 15, and vice cylinder barrel 3 fixed mounting is specific on mount pad 15: the mounting seat 15 comprises a sleeve and a supporting part fixedly mounted on the sleeve, the sleeve is sleeved on the main cylinder barrel 1 and is in threaded fit with the main cylinder barrel 1, and the supporting part is positioned on one side of the sleeve, which is close to the ejection end of the main cylinder barrel 1; the auxiliary cylinder barrel 3 is fixedly arranged on the supporting part, and the quick assembly and disassembly are convenient in a thread matching mode.
In this embodiment, the side wall of the master cylinder barrel 1 is provided with a mounting block 16, and the mounting block 16 is provided with an assembly hole, so that the hydraulic cylinder can be fixed on other equipment by using the mounting block 16.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (6)
1. The utility model provides a jacking auto-lock pneumatic cylinder which characterized in that includes: the hydraulic cylinder comprises a main cylinder barrel (1) with an oil port A (5) and an oil port B (6), a first piston assembly arranged in the main cylinder barrel (1), an auxiliary cylinder barrel (3) with an oil port C (7) and an oil port D (8), a second piston assembly arranged in the auxiliary cylinder barrel (3), and an oil path (9) used for conveying hydraulic oil; first piston assembly is including being located first piston between hydraulic fluid port A (5) and the hydraulic fluid port B and first piston rod (2) be connected with first piston, second piston assembly is including being located hydraulic fluid port D (8) and being close to the second piston of hydraulic fluid port C (7) one side and second piston rod (4) be connected with the second piston, and the one end of first piston rod (2) is located the outside of main cylinder (1) in order to form first ejection end, the one end of second piston rod (4) is located the outside of vice cylinder (3) in order to form the second ejection end, wherein:
the auxiliary cylinder barrel (3) is positioned on one side of the first ejection end and fixed with the main cylinder barrel (1), and the second ejection end faces the first piston rod (2); an air port is also arranged on the auxiliary cylinder barrel (3), and the air port is positioned at one end far away from the second ejection end; a plurality of locking grooves (11) which are sequentially arranged along the length direction of the first piston rod (2) are formed in the first piston rod, and the side wall of one side, close to the first piston, of each locking groove (11) is an inclined surface inclined towards the direction of the first piston; a locking block (12) elastically connected with the second ejection end of the second piston rod (4) is arranged at the second ejection end of the second piston rod, the locking block (12) is provided with an inclined surface, the locking block (12) is positioned in the locking groove (11), and the inclined surface of the locking block is attached to the inclined surface of the locking groove (11);
the oil port A (5) is positioned at one side close to the first ejection end, and the oil port A (5) comprises a main oil port (51) and an auxiliary oil port (52); the oil port C (7) is positioned between two ends of the auxiliary cylinder barrel (3), the oil port C (7) is connected with the auxiliary oil port (52) through a pipeline (17), and a first check valve (18) enabling hydraulic oil to flow to the auxiliary oil port (52) in a one-way mode is arranged between the oil port C (7) and the auxiliary oil port (52); the oil port D (8) is positioned on one side of the oil port C (7) close to the second ejection end; the oil path (9) comprises a main oil path (91) connecting the main oil port (51) and the oil port B (6) and a branch (92) connecting the oil port D (8) and the main oil path (91), and a second one-way valve (10) enabling hydraulic oil to flow to the oil port B (6) in a one-way mode is arranged at the joint of the main oil port (51) and the main oil path (91).
2. The jacking self-locking hydraulic cylinder according to claim 1, wherein the second piston rod (4) is provided with a guide hole passage extending from the second jacking end to the other end thereof, and an elastic element (13) and a guide rod (14) which are arranged in the elastic hole passage, one end of the guide rod (14) is abutted against the elastic element (13), and the other end thereof is positioned outside the guide hole passage; the locking block (12) is fixedly connected with the guide rod (14).
3. Jacking self-locking hydraulic cylinder according to claim 2, characterized in that the elastic element (13) comprises a spring.
4. The jacking self-locking hydraulic cylinder according to claim 1, wherein the ejection end of the main cylinder barrel (1) is provided with a mounting seat (15) detachably fixed with the main cylinder barrel, and the auxiliary cylinder barrel (3) is fixedly mounted on the mounting seat (15).
5. The jacking self-locking hydraulic cylinder according to claim 4, wherein the mounting seat (15) comprises a sleeve and a supporting part fixedly arranged on the sleeve, the sleeve is sleeved on the main cylinder barrel (1) and is in threaded fit with the main cylinder barrel (1), and the supporting part is positioned on one side of the sleeve, which is close to the jacking end of the main cylinder barrel (1); the auxiliary cylinder barrel (3) is fixedly arranged on the supporting part.
6. Jacking self-locking hydraulic cylinder according to any one of claims 1 to 5, characterized in that the side wall of the main cylinder (1) is provided with a mounting block (16), and the mounting block (16) is provided with an assembly hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121867346.3U CN216009118U (en) | 2021-08-10 | 2021-08-10 | Jacking self-locking hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121867346.3U CN216009118U (en) | 2021-08-10 | 2021-08-10 | Jacking self-locking hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216009118U true CN216009118U (en) | 2022-03-11 |
Family
ID=80588432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121867346.3U Active CN216009118U (en) | 2021-08-10 | 2021-08-10 | Jacking self-locking hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216009118U (en) |
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2021
- 2021-08-10 CN CN202121867346.3U patent/CN216009118U/en active Active
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