CN213655304U - Double-oil-pipe differential split type hydraulic oil cylinder of automobile cab lifting system - Google Patents
Double-oil-pipe differential split type hydraulic oil cylinder of automobile cab lifting system Download PDFInfo
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- CN213655304U CN213655304U CN202022623953.7U CN202022623953U CN213655304U CN 213655304 U CN213655304 U CN 213655304U CN 202022623953 U CN202022623953 U CN 202022623953U CN 213655304 U CN213655304 U CN 213655304U
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Abstract
The utility model discloses a double-oil-pipe differential split hydraulic oil cylinder of a lifting system of an automobile cab, which comprises a base assembly and a cylinder barrel connected with the base assembly, wherein the base assembly comprises a base body, and a first oil inlet and outlet pipe joint, a second oil inlet and outlet pipe joint, a push rod and a push rod assembly which are arranged on the base body; the lower end of a second oil inlet and outlet pipe joint is sequentially connected with a push rod and a push rod assembly from top to bottom, the upper end of the second oil inlet and outlet pipe joint is connected with a long oil pipe, and the long oil pipe is communicated with an inner cavity at one end of the cylinder barrel close to the sleeve; a first branch pipeline is arranged between the push rod and the push rod assembly and is communicated with the lower end of the first oil inlet and outlet pipe joint; the ejector rod assembly is provided with a second branch pipeline, the second branch pipeline is connected with a short oil pipe, and one end, far away from the second branch pipeline, of the short oil pipe extends to the inside of a rod cavity of one end, close to the base body, of the cylinder barrel. The differential hydraulic cylinder is compatible with differential and non-differential hydraulic pumps, and the working pressure is less than that of the traditional double-oil-inlet differential hydraulic cylinder.
Description
Technical Field
The utility model belongs to the pneumatic cylinder field, concretely relates to double oil pipe differential split type hydraulic cylinder of auttombilism room lift system.
Background
Conventional lifting systems are classified into differential hydraulic cylinders and non-differential hydraulic cylinders. The traditional differential hydraulic cylinder adopts a mode that the diameter of the bottom of a cylinder barrel is enlarged to realize differential motion, so that a piston rod floats up and down along with the running of a vehicle. The conventional differential hydraulic cylinder has the following problems: (1) because of the cylinder bottom diameter grow, the inside diameter of cylinder exists about inconsistent, and the diameter is little on the higher authority, the bottom condition of growing, and the cylinder needs later stage expander to realize about the diameter inconsistent, and the complicated process of processing is various. (2) Because the piston is suspended in the cylinder barrel expanding section, the offset load is easy to generate in the later use, and the oil leakage and the like are generated due to the abrasion of the sealing element. (3) The pressure is high during the lifting process.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects in the prior art, the utility model aims to provide a double-oil-pipe differential split hydraulic oil cylinder of a lifting system of an automobile cab.
In order to achieve the above object, the utility model discloses a following technical scheme realizes:
a double-oil-pipe differential split hydraulic oil cylinder of an automobile cab lifting system comprises a base assembly and a cylinder barrel 4 connected with the base assembly, wherein the base assembly comprises a base body 1, and a first oil inlet and outlet pipe joint 8, a second oil inlet and outlet pipe joint 9, a push rod 10 and a push rod assembly 11 which are arranged on the base body 1; a cylinder barrel 4 is arranged at one end of the base body 1, a piston rod 5 is arranged in an inner cavity of the cylinder barrel 4, a piston 2 is arranged at one end, arranged in the inner cavity of the cylinder barrel 4, of the piston rod 5, and a jacket 6 is arranged at a port, far away from the base body 1, of the cylinder barrel 4;
the lower end of a second oil inlet and outlet pipe joint 9 is sequentially connected with a push rod 10 and a push rod assembly 11 from top to bottom, the upper end of the second oil inlet and outlet pipe joint 9 is connected with a long oil pipe 3, and the long oil pipe 3 is communicated with an inner cavity of one end of the cylinder barrel 4 close to the sleeve 6; a first branch pipeline 12 is arranged between the push rod 10 and the push rod assembly 11, and the first branch pipeline 12 is communicated with the lower end of the first oil inlet and outlet pipe joint 8; the ejector rod assembly 11 is provided with a second branch pipeline 13, the second branch pipeline 13 is connected with a short oil pipe 7, and one end, far away from the second branch pipeline 13, of the short oil pipe 7 extends to the inside of a rod cavity of one end, close to the base body 1, of the cylinder barrel 4.
Preferably, the first branch pipeline 12 is a three-head pipeline, one end of the three-head pipeline is connected with the section between the push rod 10 and the ejector rod assembly 11, one end of the three-head pipeline is connected with the lower end of the first oil inlet and outlet pipe joint 8, and one end of the three-head pipeline is blocked by a plug.
Preferably, the second branch pipeline 13 is a three-head pipeline, one end of the three-head pipeline is connected with the ejector rod assembly 11, the other end of the three-head pipeline is connected with the short oil pipe 7, and the other end of the three-head pipeline is blocked by a plug.
Preferably, the short oil pipe 7 is connected with the cylinder barrel 4 in a welding mode and is communicated with the interior of the cylinder barrel.
Preferably, the long oil pipe 3 is connected with the cylinder 4 by welding and is communicated with the inside of the cylinder.
Preferably, a first check valve 1101 and a second check valve 1102 are arranged in the push rod assembly 11, and the conventional push rod assembly has only one check valve, namely the check valve 1101. A first one-way valve 1101 is adjacent the first branch conduit 12 and a second one-way valve 1102 is adjacent the second branch conduit 13.
Compared with the prior art, the utility model has the advantages of it is following and beneficial effect:
(1) the traditional double-oil-inlet differential hydraulic cylinder can only be matched with a differential hydraulic pump to complete lifting action, oil is required to be discharged from an oil inlet and an oil outlet of the differential hydraulic pump simultaneously, oil is fed into the oil inlet and the oil outlet of the differential hydraulic cylinder simultaneously, and the differential hydraulic cylinder can be lifted by utilizing pressure difference. The differential hydraulic cylinder of the utility model can be compatible with and matched with a differential hydraulic pump and a non-differential hydraulic pump to complete lifting action, and the working pressure is less than that of the traditional double-oil-inlet differential hydraulic cylinder;
(2) differential pneumatic cylinder, cylinder processing need not to enlarge the diameter, under the condition that the cylinder diameter is the same unchangeable, can realize the effect of differential pneumatic cylinder, damage less to the sealing member, the sealing member life cycle is long. The lifting pressure of the differential oil cylinder is small, so that the service cycle of the hydraulic pump is prolonged.
Drawings
Fig. 1 is the utility model discloses a two differential split type hydraulic cylinder's of oil pipe of auttombilism room lift system structure sketch map.
Fig. 2 is a sectional view a-a in fig. 1.
Fig. 3 is a partially enlarged view of the jack assembly 11.
Detailed Description
The present invention is further described with reference to the following specific examples, which are not intended to limit the invention.
Referring to fig. 1 to 3, the utility model relates to a double-oil-pipe differential split hydraulic cylinder of a lifting system of an automobile cab, which comprises a base assembly and a cylinder 4 connected with the base assembly, wherein the base assembly comprises a base body 1, and a first oil inlet and outlet pipe joint 8, a second oil inlet and outlet pipe joint 9, a push rod 10 and a push rod assembly 11 which are arranged on the base body 1; a cylinder barrel 4 is arranged at one end of the base body 1, a piston rod 5 is arranged in an inner cavity of the cylinder barrel 4, a piston 2 is arranged at one end, arranged in the inner cavity of the cylinder barrel 4, of the piston rod 5, and a jacket 6 is arranged at a port, far away from the base body 1, of the cylinder barrel 4;
the lower end of a second oil inlet and outlet pipe joint 9 is sequentially connected with a push rod 10 and a push rod assembly 11 from top to bottom, the upper end of the second oil inlet and outlet pipe joint 9 is connected with a long oil pipe 3, and the long oil pipe 3 is communicated with an inner cavity of one end of the cylinder barrel 4 close to the sleeve 6; a first branch pipeline 12 is arranged between the push rod 10 and the push rod assembly 11, and the first branch pipeline 12 is communicated with the lower end of the first oil inlet and outlet pipe joint 8; the ejector rod assembly 11 is provided with a second branch pipeline 13, the second branch pipeline 13 is connected with a short oil pipe 7, and one end, far away from the second branch pipeline 13, of the short oil pipe 7 extends to the inside of a rod cavity of one end, close to the base body 1, of the cylinder barrel 4.
Preferably, the first branch pipeline 12 is a three-head pipeline, one end of the three-head pipeline is connected with the section between the push rod 10 and the ejector rod assembly 11, one end of the three-head pipeline is connected with the lower end of the first oil inlet and outlet pipe joint 8, and one end of the three-head pipeline is blocked by a plug.
Preferably, the second branch pipeline 13 is a three-head pipeline, one end of the three-head pipeline is connected with the ejector rod assembly 11, the other end of the three-head pipeline is connected with the short oil pipe 7, and the other end of the three-head pipeline is blocked by a plug.
Preferably, the short oil pipe 7 is connected with the cylinder barrel 4 in a welding mode and is communicated with the interior of the cylinder barrel.
Preferably, the long oil pipe 3 is connected with the cylinder 4 by welding and is communicated with the inside of the cylinder.
Preferably, the top rod assembly 11 is further provided with a first one-way valve 1101 and a second one-way valve 1102; only first check valve 1101 of traditional ejector pin assembly, the utility model discloses more than traditional ejector pin assembly one more check valve, second check valve 1102 promptly. The first check valve 1101 functions to open and close the cavity of the first branch pipe 12 and the ram assembly 11. The second check valve 1102 functions to open and close the upper and lower portions in the cavity of the ram assembly 11, thereby assisting in the implementation of the differential function.
The working process is as follows:
choose for use differential hydraulic pump or non-differential hydraulic pump to carry out the fuel feeding and all can realize differentially, wherein, the differential split type hydraulic cylinder of two oil pipes + non-differential hydraulic pump than the differential split type hydraulic cylinder of the two oil pipes of tradition + non-differential hydraulic pump's operating pressure is little.
A rising state:
the oil inlet and outlet pipe joint 8 is used for feeding oil, the oil flows to the ejector rod assembly 11 through the passage of the first branch pipeline 12, the oil pressure pushes the ejector rod assembly 11, and the oil enters the rodless cavity;
a descending state:
oil is fed into the oil inlet and outlet pipe joint 9, the oil pressure pushes the push rod 10 to move, the ejector rod assembly 11 is ejected, the piston rod 5 is pushed to move leftwards by the rod cavity under the action of the oil pressure, meanwhile, oil in the rodless cavity is discharged out of the hydraulic cylinder through the opened ejector rod assembly 11 and the oil inlet and outlet pipe joint 8 (the oil enters the oil inlet and outlet pipe joint 8 from the ejector rod assembly 11 through the passage of the first branch pipeline 12), and the piston rod 5 of the hydraulic cylinder descends.
The suspension function is realized:
(1) when the piston rod 5 is suspended upwards, oil in the rod cavity enters through the short oil pipe 7, the pressure of the piston rod 5 is increased due to the upward movement of the piston rod, the oil enters the second branch pipeline 13 through the short oil pipe 7 and then pushes the second check valve 1102 and the first check valve 11101 in the ejector rod assembly 11, so that the oil enters the oil inlet and outlet pipe joint 8 and returns to the oil pump;
(2) when the piston rod 5 is suspended downwards, the oil in the rodless cavity directly returns to the oil pump through the oil inlet and outlet pipe joint 8; when the piston rod 5 repeatedly realized the function of suspending from top to bottom, the fluid in the no pole chamber of pneumatic cylinder and the pole intracavity can be discharged into the oil pump, and the short oil pipe 7 of 4 insides of cylinder and 4 welded position of cylinder can form the vacuum to this short distance of base body 1, and the resistance can be littleer when the piston rod 5 realized suspending from top to bottom.
The differential hydraulic cylinder of the utility model can be compatible with and matched with a differential hydraulic pump or a non-differential hydraulic pump to complete lifting action, and the working pressure is less than that of the traditional double-oil-inlet differential hydraulic cylinder; the diameter need not to enlarge in the cylinder processing, under the unchangeable condition as much as the cylinder diameter, can realize the effect of differential type pneumatic cylinder, damage lessly to the sealing member, the sealing member life cycle is long. The lifting pressure of the differential oil cylinder is small, so that the service cycle of the hydraulic pump is prolonged.
The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all are included in the scope of the present invention.
Claims (6)
1. A double-oil-pipe differential split hydraulic oil cylinder of a lifting system of an automobile cab is characterized by comprising a base assembly and a cylinder (4) connected with the base assembly, wherein the base assembly comprises a base body (1), and a first oil inlet and outlet pipe joint (8), a second oil inlet and outlet pipe joint (9), a push rod (10) and a push rod assembly (11) which are arranged on the base body (1); a cylinder barrel (4) is arranged at one end of the base body (1), a piston rod (5) is arranged in an inner cavity of the cylinder barrel (4), a piston (2) is arranged at one end, arranged in the inner cavity of the cylinder barrel (4), of the piston rod (5), and a sleeve (6) is arranged at a port, far away from the base body (1), of the cylinder barrel (4);
the lower end of a second oil inlet and outlet pipe joint (9) is sequentially connected with a push rod (10) and a push rod assembly (11) from top to bottom, the upper end of the second oil inlet and outlet pipe joint (9) is connected with a long oil pipe (3), and the long oil pipe (3) is communicated with an inner cavity at one end, close to the sleeve (6), of the cylinder barrel (4); a first branch pipeline (12) is arranged between the push rod (10) and the push rod assembly (11), and the first branch pipeline (12) is communicated with the lower end of the first oil inlet and outlet pipe joint (8); the ejector rod assembly (11) is provided with a second branch pipeline (13), the second branch pipeline (13) is connected with a short oil pipe (7), and one end, far away from the second branch pipeline (13), of the short oil pipe (7) extends to the inside of a rod cavity of one end, close to the base body (1), of the cylinder barrel (4).
2. The double-oil-pipe differential split hydraulic oil cylinder of the automobile cab lifting system according to claim 1, wherein the first branch pipeline (12) is a three-head pipeline, one end of the three-head pipeline is connected with a section between the push rod (10) and the ejector rod assembly (11), one end of the three-head pipeline is connected with the lower end of the first oil inlet and outlet pipe joint (8), and the other end of the three-head pipeline is blocked by a plug.
3. The double-oil-pipe differential split hydraulic oil cylinder of the automobile cab lifting system according to claim 1 or 2, wherein the second branch pipeline (13) is a three-head pipeline, one end of the three-head pipeline is connected with the ejector rod assembly (11), the other end of the three-head pipeline is connected with the short oil pipe (7), and the other end of the three-head pipeline is blocked by a plug.
4. The double-oil-pipe differential split hydraulic oil cylinder of the automobile cab lifting system according to claim 1 or 2, characterized in that the short oil pipe (7) is connected with the cylinder barrel (4) in a welding mode and communicated with the inside of the cylinder barrel.
5. The double-oil-pipe differential split hydraulic oil cylinder of the automobile cab lifting system according to claim 1 or 2, characterized in that the long oil pipe (3) is connected with the cylinder barrel (4) in a welding mode and communicated with the inside of the cylinder barrel.
6. The double-oil-pipe differential split hydraulic oil cylinder of the automobile cab lifting system according to claim 1, characterized in that a first check valve (1101) and a second check valve (1102) are arranged in the ram assembly (11), the first check valve (1101) is close to the first branch pipeline (12), and the second check valve (1102) is close to the second branch pipeline (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022623953.7U CN213655304U (en) | 2020-11-13 | 2020-11-13 | Double-oil-pipe differential split type hydraulic oil cylinder of automobile cab lifting system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022623953.7U CN213655304U (en) | 2020-11-13 | 2020-11-13 | Double-oil-pipe differential split type hydraulic oil cylinder of automobile cab lifting system |
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| CN213655304U true CN213655304U (en) | 2021-07-09 |
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| CN202022623953.7U Active CN213655304U (en) | 2020-11-13 | 2020-11-13 | Double-oil-pipe differential split type hydraulic oil cylinder of automobile cab lifting system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117307550A (en) * | 2023-11-08 | 2023-12-29 | 湖北盛达动力科技有限公司 | Cab overturning oil cylinder with adjustable damping and balance |
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2020
- 2020-11-13 CN CN202022623953.7U patent/CN213655304U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117307550A (en) * | 2023-11-08 | 2023-12-29 | 湖北盛达动力科技有限公司 | Cab overturning oil cylinder with adjustable damping and balance |
| CN117307550B (en) * | 2023-11-08 | 2024-04-12 | 湖北盛达动力科技有限公司 | Cab overturning oil cylinder with adjustable damping and balance |
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