CN2837273Y - Descent control device for single angling machine - Google Patents
Descent control device for single angling machine Download PDFInfo
- Publication number
- CN2837273Y CN2837273Y CN 200520115764 CN200520115764U CN2837273Y CN 2837273 Y CN2837273 Y CN 2837273Y CN 200520115764 CN200520115764 CN 200520115764 CN 200520115764 U CN200520115764 U CN 200520115764U CN 2837273 Y CN2837273 Y CN 2837273Y
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- valve rod
- pressure oil
- oil passage
- low pressure
- singly
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Abstract
The utility model discloses a descent control device for a single angling machine, which is composed of a high pressure oil passage, a low pressure oil passage, a steel ball, an unloading valve rod, etc., wherein the high pressure oil passage is communicated with a high pressure oil cavity; the low pressure oil passage is communicated with a low pressure oil cavity; the steel ball is placed in the connection place of the high pressure oil passage and the low pressure oil passage, and the position of steel ball can be changed along the axle center direction of the unloading valve rod; the unloading valve rod can also be propelled or fall back axially. The utility model is characterized in that the steel ball is placed in the high pressure oil cavity in the connection place of the high pressure oil passage and the low pressure oil passage; the outer surface at the front part of the unloading valve rod is sheathed with a reset spring, the middle part is provided with a boss of the valve rod, and the back part is connected with a propelling mechanism of the valve rod; both ends of the reset spring respectively bunt and press a valve body and one end of the boss of the valve rod; the other end of the boss of the valve rod bunt and press one end of the propelling mechanism of the valve rod to do actions in a linking mode in the same direction. The utility model has the advantages of simple operation, safety and stable action of the descent of a hanging arm.
Description
Technical field
The utility model belongs to the hydraulic tool technical field, relates to a kind of machine descending control device that singly angles.
Technical background
As shown in Figure 2, sell in the market and the hydraulic pressure list that uses angles machine, its descending control device is made up of high-pressure oil passage 3, low pressure oil passage 4, steel ball 1 and off-load valve rod.Described high-pressure oil passage 3 is communicated with high-voltage oil cavity, and low pressure oil passage 4 is communicated with the low pressure oil pocket.Steel ball 1 is positioned at the low pressure oil passage 4 of high-pressure oil passage 3 and low pressure oil passage 4 junctions, by change along off-load valve rod axis direction that the position can be linked up or cut off high oil passage 3 and low pressure oil passage 4 between contact.The off-load valve rod is that a front end compresses mutually with steel ball 1, and the middle part is with sealing member, and the rear portion is shaped on radial projection, is used with respective sleeve, can turn sleeve pipe by operating personal, the cylinder that utilizes helicitic texture to advance in valve body or retreat.When the machine that singly angles is in non-descent mode, when promptly promoting state or load quiescence, the off-load valve rod holds out against steel ball 1 at high-pressure oil passage 3 opening parts, contact between cut off high oil passage 3 and the low pressure oil passage 4, hydraulic oil can not flow into the low pressure oil pocket from high-voltage oil cavity, at this moment, just can be supported arm by the piston of high pressure oil jack-up and be unlikely to decline.When arm need decrease, operating personal is connected on the casing pipe sleeve that the end is shaped on gap on the radial projection at off-load valve rod rear portion, unscrew the off-load valve rod backward, steel ball 1 leaves high-pressure oil passage 3 opening parts under the effect of oil pressure, high-pressure oil passage 3 and low pressure oil passage 4 are connected, hydraulic oil flows into the low pressure oil pocket from high-voltage oil cavity, piston falls after rise, arm descends, then, operating personal must in time be tightened the off-load valve rod forward, until it steel ball 1 is pushed up back original position, make piston stop to fall after rise, arm stops to descend.The shortcoming of this descending control device is: each operation all must be on the off-load valve rod slip joint casing, turn sleeve pipe then, unless need disposable arm be dropped to the end, operation all needs to turn sleeve pipe and off-load valve rod to positive and negative both direction otherwise finish each time, and therefore operation is very inconvenient; In addition, if because operating personal is lacked experience, stroke is excessive when unscrewing the off-load valve rod, and it is oily too fast to cause directly that high-voltage oil cavity rushes down, and causes the too fast decline of suspended object, so both might damage suspended object, and also machine is singly angled in damage easily, even causes safety problem.
Summary of the invention
To be solved in the utility model is that the hydraulic pressure list angles the machine descending control device to use dangerous and not easy technical matters, and purpose is to singly angling the machine operation personnel that a kind of simple to operate, safety, the descending control device of stable working are provided.
For achieving the above object, solution of the present utility model is: a kind of machine descending control device that singly angles, form by high-pressure oil passage, low pressure oil passage, steel ball and off-load valve rod, the machine high-voltage oil cavity is singly angled in described high-pressure oil passage connection, low pressure oil channel connection list angles machine low pressure oil pocket, steel ball is positioned at the junction of high-pressure oil passage and low pressure oil passage, and its position can change along the axis direction of off-load valve rod, and off-load valve rod itself also can axial advance or retreated.It is characterized in that: steel ball is positioned at the high-pressure oil passage of high-pressure oil passage and low pressure oil passage junction, outside, off-load valve rod front portion is with retracing spring, the middle part is shaped on the valve rod convex, rear portion and valve rod propulsive mechanism link, the two ends of retracing spring are pressed on respectively on the valve body and an end of valve rod convex, and the other end of valve rod convex compresses also mutually with an end of valve rod propulsive mechanism can do equidirectional interlock.
Compared with prior art, advantage of the present utility model is: an end of valve rod propulsive mechanism always with the off-load valve rod pressure that offsets, under non-descent mode, because the differential pressure action of oil in high-pressure oil passage and the low pressure oil passage, steel ball is pressed on the high-pressure oil passage opening part, when arm need descend, operating personal utilizes mechanical drive, overcome the elastic force of retracing spring, this end of valve rod propulsive mechanism is directly advanced to the valve body direction, the off-load valve rod travels forward, and breaks away from the home position until contact and promotion steel ball, links up high-pressure oil passage and low pressure oil passage, when carrying out this operation, not only need not slip joint casing on the off-load valve rod temporarily, and because the elastic force of retracing spring, i.e. the resistance felt of operating personal, along with travelling forward of off-load valve rod can strengthen gradually, so the propelling stroke of off-load valve rod is controlled easily, can excessive to cause that high-voltage oil cavity rushes down oil not too fast because of stroke, and then cause the too fast decline of suspended object and bring variety of issue; In addition, when operating personal is desired to stop singly to angle the machine down maneuver and is abandoned application force to the valve rod propulsive mechanism, the off-load valve rod can automatically reset under the effect that compresses of retracing spring, steel ball is pressed on the high-pressure oil passage opening part immediately again under the differential pressure action of oil, hydraulic oil flows between cut off high oil pocket and the low pressure oil pocket, make and to angle arm to stop automatically descending, therefore also just solved each time the firmly operation inconvenience problem of control of the positive and negative both direction of action need.In summary, this list loop wheel machine angles that the arm step-down operation is easier, steady, safety.
Description of drawings
Fig. 1 is a three-dimensional partial cutaway schematic of the present utility model.
Fig. 2 singly angles the three-dimensional generalized section of machine descending control device for prior art.
Fig. 3 is for using the machine schematic perspective view that singly angles of the present utility model.
In the accompanying drawings, the corresponding relation of parts and numbering thereof is as follows: the 1-steel ball; 2-off-load valve rod; The 3-high-pressure oil passage; 4-low pressure oil passage; The 5-retracing spring; The 6-valve body; 7-valve rod convex; The outer convex of 8-valve rod; The 9-plug; The 11-high-voltage oil cavity; 12-low pressure oil pocket; The 21-cantilever; The 22-axle; The 23-nut; 24-controls backguy; The 25-fork; The 26-bolt; The 27-handle.
The specific embodiment
Singly angling in the machine descending control device shown in the accompanying drawing 1, whole device is made up of high-pressure oil passage 3, low pressure oil passage 4, steel ball 1 and off-load valve rod 2 etc.Machine high-voltage oil cavity 11 is singly angled in described high-pressure oil passage 3 connections, in high-voltage oil cavity 11, piston is installed, and the top of piston is connecting angles arm, and piston drives and angles arm lifting with the lifting on high-voltage oil cavity 11 mesohigh profit planes.Machine low pressure oil pocket 12 is singly angled in 4 connections of low pressure oil passage.Steel ball 1 is positioned at the high-pressure oil passage 3 of high-pressure oil passage 3 and low pressure oil passage 4 junctions, and its position can change along the axis direction of off-load valve rod 2.When the machine that singly angles is in non-descent mode, when promptly being in lifting state or load quiescence, steel ball 1 does not all contact with off-load valve rod 2 and plug 9, but because the differential pressure action of oil in high-pressure oil passage 3 and the low pressure oil passage 4, steel ball 1 is pressed on the valve body 6 of high-pressure oil passage 3 opening parts, contact between cut off high oil passage 3 and the low pressure oil passage 4, hydraulic oil can not flow into low pressure oil pocket 12 from high-voltage oil cavity 11, at this moment, just can be supported arm by the piston of high pressure oil jack-up and be unlikely to decline.Off-load valve rod 2 also can axial advance or is retreated.The front portion of off-load valve rod 2 is thinner, and the outside is with retracing spring 5; Retracing spring 5 is in compressed state all the time, and its two ends are pressed on respectively on the valve body 6 and an end of valve rod convex 7.The middle part of off-load valve rod 2 is shaped on thicker valve rod convex 7, closely cooperates with valve body 6, though but relative motion, hydraulic oil can not ooze out thus; In the present embodiment, this valve rod convex 7 part outside valve body 6 is shaped on convex 8 outside the bigger valve rod of diameter.The rear portion of off-load valve rod 2, i.e. the other end of valve rod convex 7 and part in addition thereof link with an end of valve rod propulsive mechanism and keep compressing.So-called valve rod propulsive mechanism is a leverage in the present embodiment, and its major part is to be a fork 25 of fulcrum with the axle 22 on the cantilever 21; One end of this fork 25 is socketed in the rear portion of off-load valve rod 2 in the axis hole mode, and spacing formation connects in the both sides, front and back with valve rod convex 7 and nut 23, and fork 25 keeps compressing with valve rod convex 7 at this end all the time; Bolt 26 that the other end utilization of this fork 25 is radially porose and nut 23 are fixedly connected with control backguy 24; Cantilever 21 is fixed on the valve body 6, when the machine that singly angles is in non-descent mode, promptly controls under the situation that backguy 24 is not pulled up, because the elastic force effect of retracing spring 5 makes the lower surface of fork 25 be pressed on the upper surface of cantilever 21.
As shown in Figure 3, control backguy 24 connects with connecting mode and the handle 27 that is similar to the ordinary bicycle brake pulling wire in the present embodiment.
Shown in accompanying drawing 1 and accompanying drawing 3, when arm need descend, operating personal may stand in the operating position that singly angles the machine back, just be convenient to most control safely the whole operating position that singly angles machine, pull back handle 27, i.e. pulling control backguy 24, be pulled upwardly and control an end of the fork 25 that backguy 24 is fixedly connected, utilize lever principle, the other end that is socketed in the fork 25 at off-load valve rod 2 rear portions in the axis hole mode will promote valve rod convex 7 to valve body 6 inner propellings, promptly realizes the equidirectional interlock of off-load valve rod 2 and valve rod propulsive mechanism one end.Along with off-load valve rod 2 constantly advances, because the elastic force of retracing spring 5 strengthens, the resistance that feeds back to operating personal also just increases, so the not only subjective propelling degree that can clearly recognize off-load valve rod 2 of operating personal, and objectively be not easy to cause off-load valve rod 2 strokes excessive because of overexerting.Operating personal continues to pull back handle 27, breaks away from the home position until 2 contacts of off-load valve rod and promotion steel ball 1, links up high-pressure oil passage 3 and low pressure oil passage 4, and hydraulic oil flows into low pressure oil pockets 12 from high-voltage oil cavity 11, and piston falls after rise, arm decline.In such arm step-down operation process, the maximum propelling stroke that can further guarantee off-load valve rod 2 that is provided with of the outer convex 8 of valve rod is controlled in the suitable scope, promptly, when off-load valve rod 2 is pushed ahead to a certain degree, the outer convex 8 of valve rod can contact with valve body 6, off-load valve rod 2 stops to travel forward, thereby is unlikely to cause the excessive or damage steel ball 1 of steel ball 1 stroke.When arm need stop to descend, operating personal only need be decontroled handle 27, off-load valve rod 2 will retreat under the effect of retracing spring 5, at first break away from steel ball 1, continue then to retreat until valve rod convex 7 and withstood by an end of fork 25 and stop, at this moment, fork 25 is pressed on because of its lower surface on the upper surface of cantilever 21 and stops swinging.When off-load valve rod 2 is finished above-mentioned homing action, because the differential pressure action of oil in high-pressure oil passage 3 and the low pressure oil passage 4, steel ball 1 is pressed on the opening part of high-pressure oil passage 3 immediately again, hydraulic oil is mobile between cut off high oil pocket 11 and the low pressure oil pocket 12, makes to angle arm to stop automatically descending.
Claims (4)
1. one kind is singly angled the machine descending control device, by high-pressure oil passage (3), low pressure oil passage (4), steel ball (1) and off-load valve rod (2) are formed, machine high-voltage oil cavity (11) is singly angled in described high-pressure oil passage (3) connection, machine low pressure oil pocket (12) is singly angled in low pressure oil passage (4) connection, steel ball (1) is positioned at the junction of high-pressure oil passage (3) and low pressure oil passage (4), its position can change along the axis direction of off-load valve rod (2), off-load valve rod (2) also can axial advance or is retreated, it is characterized in that: steel ball (1) is positioned at the high-pressure oil passage (3) of high-pressure oil passage (3) and low pressure oil passage (4) junction, the anterior outside of off-load valve rod (2) is with retracing spring (5), the middle part is shaped on valve rod convex (7), rear portion and valve rod propulsive mechanism link, the two ends of retracing spring (5) are pressed on the valve body (6) respectively and an end of valve rod convex (7), and the other end of valve rod convex (7) compresses mutually with the valve rod propulsive mechanism and can do equidirectional interlock.
2. the machine descending control device that singly angles as claimed in claim 1, it is characterized in that: described valve rod propulsive mechanism be with on the cantilever (21) the axle (22) be a fork (25) of fulcrum, one end of this fork (25) utilizes bolt (26) and nut (23) to be fixedly connected with control backguy (24), and the other end utilizes shaft hole sleeve to be connected on the rear portion of off-load valve rod (2) and the spacing formation connection in both sides with valve rod convex (7) and nut (23).
3. the machine descending control device that singly angles as claimed in claim 1 is characterized in that: off-load valve rod (2) is shaped on convex (8) outside the bigger valve rod of diameter on its valve rod convex (7).
4. the machine descending control device that singly angles as claimed in claim 2 is characterized in that: singly angle machine in non-descent mode, promptly control under the situation that backguy (24) is not pulled up, fork (25) is pressed on the cantilever (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520115764 CN2837273Y (en) | 2005-10-27 | 2005-10-27 | Descent control device for single angling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520115764 CN2837273Y (en) | 2005-10-27 | 2005-10-27 | Descent control device for single angling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2837273Y true CN2837273Y (en) | 2006-11-15 |
Family
ID=37391755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520115764 Expired - Lifetime CN2837273Y (en) | 2005-10-27 | 2005-10-27 | Descent control device for single angling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2837273Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108002246A (en) * | 2017-12-20 | 2018-05-08 | 常熟通润汽车零部件股份有限公司 | Stowing operation mechanism and collapsible turned crane |
-
2005
- 2005-10-27 CN CN 200520115764 patent/CN2837273Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108002246A (en) * | 2017-12-20 | 2018-05-08 | 常熟通润汽车零部件股份有限公司 | Stowing operation mechanism and collapsible turned crane |
| CN108002246B (en) * | 2017-12-20 | 2023-09-19 | 常熟通润汽车零部件股份有限公司 | Storage operating mechanism and folding crane |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20061115 |
|
| EXPY | Termination of patent right or utility model |