CN102704445A - Self-locking device of hydraulic hoist - Google Patents
Self-locking device of hydraulic hoist Download PDFInfo
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- CN102704445A CN102704445A CN201110090244XA CN201110090244A CN102704445A CN 102704445 A CN102704445 A CN 102704445A CN 201110090244X A CN201110090244X A CN 201110090244XA CN 201110090244 A CN201110090244 A CN 201110090244A CN 102704445 A CN102704445 A CN 102704445A
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Abstract
The invention discloses a self-locking device of a hydraulic hoist and relates to the field of structures of hydraulic hoists. The self-locking device comprises a cylinder barrel, a piston, a piston rod and a cylinder rear cover, wherein the rear end of the piston rod penetrates out of the piston; a positioning groove is axially formed on the piston rod on the rear side of the piston; an axial groove is formed on the inner side of the cylinder rear cover; at least one group of spring cylinders are arranged on the cylinder rear cover; each group of spring cylinders comprise a first inner cavity, a second inner cavity, a spiral plug, a positioning spring, a positioning piston and a positioning steel ball; the diameter of one end of each second inner cavity is greater than that of the other end of each second inner cavity; each spiral plug and each positioning spring are arranged in each first inner cavity; each positioning piston comprises a piston body; an outwards protruded limiting step is integrally formed on each piston body; each piston body is integrally arranged in each second inner cavity; each limiting step is arranged in each first inner cavity; each positioning steel ball is arranged in the end of each second inner cavity, which has a relative small diameter; and each positioning steel ball is detachably arranged in the positioning groove on the piston rod. The self-locking device has the advantages that pressure can be maintained for a long time, a gate can be flexibly hoisted, and the performance is stable; and besides, the structure is simple.
Description
Technical field
The present invention relates to the structure field of hydraulic hoist.
Background technology
Hydraulic hoist has two kinds of integrated hydraulic hoists and split type hydraulic hoists, is applicable to the gate of various middle-size and small-size water conservancies, water station and municipal engineering, is to be organically combined by hydraulic system and hydraulic jack two parts to form.Forward and backward realization hydraulic jack through motor under electrical equipment control is done axially reciprocating, drives the connecting rod and the gate that are connected on the piston rod and moves reciprocatingly, and reaches the purpose of unlatching, closed shutter.Advantages such as at present the hydraulic control valve great majority adopt the plug-in mountings technology on the integrated hydraulic hoists, and cartridge valve has that the combination function is strong, integrated level is high, noise is low, good airproof performance, mechanism are compact, easy to maintenance.The hydraulic control valve great majority adopt overflow valve, flow speed control valve, hydraulic control one-way valve, solenoid operated directional valve on the present split type hydraulic hoist.
No matter be the also split type hydraulic hoist of integrated hydraulic hoists, all have following defective: self-locking property is poor, especially has deadweight to hang for a long time, can not lock gate for a long time.Must rely on the pressurize of electrical equipment Fraquent start motor fuel feeding, or not allow downslide to the gate location by external force.
Summary of the invention
The objective of the invention is provides the self-locking device of the hydraulic hoist of the long-term self-locking of a kind of ability in order to overcome the deficiency of prior art.
The objective of the invention is to realize like this: the self-locking device of hydraulic hoist; Comprise cylinder tube, piston, piston rod and oil cylinder bonnet; Piston is equipped with in cylinder tube; Piston rod is set in the cylinder tube, and the rear end of piston rod is fixedly connected with piston, and the oil cylinder bonnet is fixedly connected on the rear end of cylinder tube; The rear end of said piston rod is set in outside the piston, and locating slot radially is set on the piston rod of piston rear side; The inboard of said oil cylinder bonnet is provided with the axial notch that matches with the piston rod rear end, and at least one group of spring cylinder is set on the oil cylinder bonnet; Every group of spring cylinder comprises first inner chamber, second inner chamber, vice, retainer spring, positioning piston and positioning ball respectively, and first inner chamber and second inner chamber radially are arranged in the oil cylinder bonnet, and an end diameter of second inner chamber is greater than other end diameter; The second inner chamber larger diameter end is connected with first inner chamber; The second inner chamber smaller diameter end is connected with the axial notch of oil cylinder bonnet, and vice and retainer spring are arranged in first inner chamber, and vice is threaded with said oil cylinder bonnet; Retainer spring is arranged between vice and the positioning piston; Positioning piston comprises piston only, and disjunctor is provided with the limited step of outside protrusion on the piston only, and piston only is arranged in second inner chamber; Limited step is arranged in first inner chamber; The diameter of limited step is greater than the diameter of the second inner chamber larger diameter end, and positioning ball is arranged in the second inner chamber smaller diameter end, and positioning ball is detachable to be arranged in the locating slot of said piston rod.
When the oil cylinder piston bar ran to end of travel, the positioning ball of spring cylinder imported in the piston rod rear portion locating slot of oil cylinder, utilized spring cylinder locking, and headstock gear is in the mechanical interlocking state.When gate need be closed or oil cylinder when stretching out, oil cylinder rear portion fuel feeding, spring cylinder is opened rapidly, the headstock gear oil cylinder piston is under system's rated pressure effect, positioning ball withdraws from the locating slot of piston rod, the headstock gear oil cylinder stretch out or gate descending.The present invention has long-term pressurize, opens and closes flexible, steady performance, and is simple in structure, need not to set up Hydraulic Station and pump house, and easy for installation, the field-terminated power supply gets final product work, can replace present screw open-close machine.
When hydraulic hoist when being split type; For making things convenient for the present invention to be installed in the oil cylinder bonnet; The outside of said oil cylinder bonnet is fixedly connected the location cylinder body that equates with spring cylinder quantity; Each locate cylinder body respectively with the first corresponding intracavity inter-connection, said each vice is threaded with corresponding location cylinder body.
Description of drawings
Fig. 1 is a kind of structural representation of the present invention.
Fig. 2 is an I portion enlarged drawing among Fig. 1.
Fig. 3 be among Fig. 1 A-A to view.
Fig. 4 is an another kind of structural representation of the present invention.
Fig. 5 is an II portion enlarged drawing among Fig. 4.
Fig. 6 be among Fig. 4 B-B to view.
Among the figure, 1 oil tube, 2 cylinder tubes, 3 piston rods, 4 pistons, 5 spring cylinders; 6 oil cylinder bonnets, 6-1 axial notch, 7 positioning pistons, 7-1 piston only, 7-2 limited step, 8 positioning balls; 9 second inner chambers, 10 first inner chambers, 11 retainer springs, 12 vices, 13 location cylinder bodies.
The specific embodiment
Embodiment 1
Like Fig. 1,2, shown in 3, the present invention is installed on the integrated hydraulic hoists, comprises oil tube 1, cylinder tube 2, piston 4, piston rod 3 and oil cylinder bonnet 6; Cylinder tube 2 is set in the oil tube 1, and piston 4 is equipped with in cylinder tube 2, and piston rod 3 is set in the cylinder tube 2; The rear end of piston rod 3 is fixedly connected with piston 4; The rear end of piston rod 3 is set in outside the piston 4, on the piston rod 3 of piston 4 rear sides locating slot 3-1 is set radially, and oil cylinder bonnet 6 is welded on the rear end of oil tube 1 and cylinder tube 2; The inboard of oil cylinder bonnet 6 is provided with the axial notch 6-1 that matches with piston rod 3 rear ends, and three groups of spring cylinders 5 are set on the oil cylinder bonnet 6.Every group of spring cylinder 5 comprises first inner chamber 10, second inner chamber 9, vice 12, retainer spring 11, positioning piston 7 and positioning ball 8 respectively; First inner chamber 10 and second inner chamber 9 radially are arranged in the oil cylinder bonnet 6; One end diameter of second inner chamber 9 is greater than other end diameter, and second inner chamber, 9 larger diameter end are connected with first inner chamber 10, and second inner chamber, 9 smaller diameter end are connected with the axial notch 6-1 of oil cylinder bonnet 6; Vice 12 is arranged in first inner chamber 10 with retainer spring 11; Vice 12 is threaded with oil cylinder bonnet 6, and retainer spring 11 is arranged between vice 12 and the positioning piston 7, and positioning piston 7 comprises piston only 7-1; Piston only 7-1 goes up the limited step 7-2 that disjunctor is provided with outside protrusion; Piston only 7-1 is arranged in second inner chamber 9, and limited step 7-2 is arranged in first inner chamber 10, and the diameter of limited step 7-2 is greater than the diameter of second inner chamber, 9 larger diameter end; Positioning ball 8 is arranged in second inner chamber, 9 smaller diameter end, and positioning ball 9 is detachable to be arranged in the locating slot 3-1 of piston rod 3.
Like Fig. 4,5, shown in 6; The present invention is installed on the split type hydraulic hoist; Three location of welding, the outside of oil cylinder bonnet 6 cylinder bodies 13, each is located cylinder body 13 and is connected with the first corresponding inner chamber 10 respectively, and each vice 12 is threaded with corresponding location cylinder body 13.All the other structures are with embodiment 1, and split type hydraulic hoist does not have oil tube 1.
Claims (2)
1. the self-locking device of hydraulic hoist; Comprise cylinder tube, piston, piston rod and oil cylinder bonnet, piston is equipped with in cylinder tube, and piston rod is set in the cylinder tube; The rear end of piston rod is fixedly connected with piston, and the oil cylinder bonnet is fixedly connected on the rear end of cylinder tube; It is characterized in that: the rear end of said piston rod is set in outside the piston, and locating slot radially is set on the piston rod of piston rear side; The inboard of said oil cylinder bonnet is provided with the axial notch that matches with the piston rod rear end, and at least one group of spring cylinder is set on the oil cylinder bonnet; Every group of spring cylinder comprises first inner chamber, second inner chamber, vice, retainer spring, positioning piston and positioning ball respectively, and first inner chamber and second inner chamber radially are arranged in the oil cylinder bonnet, and an end diameter of second inner chamber is greater than other end diameter; The second inner chamber larger diameter end is connected with first inner chamber; The second inner chamber smaller diameter end is connected with the axial notch of oil cylinder bonnet, and vice and retainer spring are arranged in first inner chamber, and vice is threaded with said oil cylinder bonnet; Retainer spring is arranged between vice and the positioning piston; Positioning piston comprises piston only, and disjunctor is provided with the limited step of outside protrusion on the piston only, and piston only is arranged in second inner chamber; Limited step is arranged in first inner chamber; The diameter of limited step is greater than the diameter of the second inner chamber larger diameter end, and positioning ball is arranged in the second inner chamber smaller diameter end, and positioning ball is detachable to be arranged in the locating slot of said piston rod.
2. the self-locking device of hydraulic hoist according to claim 1; It is characterized in that: the outside of said oil cylinder bonnet is fixedly connected the location cylinder body that equates with spring cylinder quantity; Each locate cylinder body respectively with the first corresponding intracavity inter-connection, said each vice is threaded with corresponding location cylinder body.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201110090244XA CN102704445A (en) | 2011-04-12 | 2011-04-12 | Self-locking device of hydraulic hoist |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201110090244XA CN102704445A (en) | 2011-04-12 | 2011-04-12 | Self-locking device of hydraulic hoist |
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CN102704445A true CN102704445A (en) | 2012-10-03 |
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Application Number | Title | Priority Date | Filing Date |
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CN201110090244XA Pending CN102704445A (en) | 2011-04-12 | 2011-04-12 | Self-locking device of hydraulic hoist |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105314585A (en) * | 2015-12-03 | 2016-02-10 | 北京机械设备研究所 | Quantitative filling mechanism |
CN108951565A (en) * | 2016-09-12 | 2018-12-07 | 葛海燕 | Combined type headstock gear for control valve |
CN117847043A (en) * | 2024-03-01 | 2024-04-09 | 江苏亚力亚气动液压成套设备有限公司 | Hydraulic cylinder guiding device |
-
2011
- 2011-04-12 CN CN201110090244XA patent/CN102704445A/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105314585A (en) * | 2015-12-03 | 2016-02-10 | 北京机械设备研究所 | Quantitative filling mechanism |
CN108951565A (en) * | 2016-09-12 | 2018-12-07 | 葛海燕 | Combined type headstock gear for control valve |
CN108951564A (en) * | 2016-09-12 | 2018-12-07 | 葛海燕 | A kind of combined type headstock gear for control valve |
CN108951563A (en) * | 2016-09-12 | 2018-12-07 | 葛海燕 | Headstock gear for control valve |
CN117847043A (en) * | 2024-03-01 | 2024-04-09 | 江苏亚力亚气动液压成套设备有限公司 | Hydraulic cylinder guiding device |
CN117847043B (en) * | 2024-03-01 | 2024-06-28 | 江苏亚力亚气动液压成套设备有限公司 | Hydraulic cylinder guiding device |
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Legal Events
Date | Code | Title | Description |
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C06 | Publication | ||
PB01 | Publication | ||
C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121003 |