CN205117883U - Mining dump truck telscoping hydaulic cylinder unloading device - Google Patents
Mining dump truck telscoping hydaulic cylinder unloading device Download PDFInfo
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- CN205117883U CN205117883U CN201520901066.8U CN201520901066U CN205117883U CN 205117883 U CN205117883 U CN 205117883U CN 201520901066 U CN201520901066 U CN 201520901066U CN 205117883 U CN205117883 U CN 205117883U
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- spring
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- bearing pin
- relief arrangement
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Abstract
The utility model provides a mining dump truck telscoping hydaulic cylinder unloading device, including pneumatic cylinder piston, final stage cylinder, uide bushing, final stage piston rod, install unloading device on the pneumatic cylinder piston, wherein unloading device is along the setting of pneumatic cylinder piston motion direction, unloading device is provided with the perforating hole along pneumatic cylinder piston motion orientation on the pneumatic cylinder piston, be equipped with the uide pin axle in the perforating hole, and the uide pin axle is bored for the forked tail at the tail end of perforating hole, and the borehole jack is worn out to have a perfect understanding by the uide pin axle has a spring, and the spring is equipped with the spring holder outward, and the spring holder is outward through the nut pivort fixation that will lead. The utility model discloses when the hydro -cylinder lifted to the peak, the unloading device on the pneumatic cylinder piston contacted with the uide bushing when using, opened the unloading valve and made the fluid entering in no pole chamber have the pole chamber, accomplished the off -load function, and the protection hydro -cylinder no longer bears super large pressure.
Description
Technical field
The utility model relates to a kind of quarry tipper telscoping hydaulic cylinder, and specifically oil cylinder inside is provided with relief arrangement and has unloading function when oil cylinder is lifted to peak.
Background technique
The structure of current quarry tipper oil cylinder is roughly divided into two types, and one is multilevel double-action cylinder, one is final stage two-way cylinder.Fall because oil cylinder of dumper can utilize large case to conduct oneself with dignity, so structure conventional on market is final stage double-action form.
As shown in Figure 1, conventional last-stage double-acting telescopic sleeve hydraulic cylinder is made up of hydraulic cylinder piston 1, final stage cylinder barrel 4, guide sleeve 7, final stage piston rod 8.Quarry tipper compare common dumping car load many, pressure is high, the restriction due to structure cannot utilize limit stoper to protect oil cylinder.When oil cylinder is lifted to extreme higher position, oil cylinder self cannot off-load, and persistent pressure causes oil cylinder internal pressure to raise suddenly, and causing oil cylinder to be out of shape, What is more causes at the bottom of oil cylinder and come off, and produces serious quality accidents.
Summary of the invention
The utility model provides a kind of quarry tipper telscoping hydaulic cylinder relief arrangement, when oil cylinder gives rise to peak, realizes off-load by relief arrangement, avoids oil cylinder to bear higher pressure when giving rise to extreme higher position.
The technical solution of the utility model is as follows for this reason: a kind of quarry tipper telscoping hydaulic cylinder relief arrangement, comprise hydraulic cylinder piston, final stage cylinder barrel, guide sleeve, final stage piston rod, it is characterized in that: on hydraulic cylinder piston, be provided with relief arrangement, wherein relief arrangement arranges along hydraulic cylinder piston moving direction.
Further improvement is: relief arrangement is, on hydraulic cylinder piston, hydraulic cylinder piston moving direction is provided with through hole, guiding bearing pin is provided with in through hole, guiding bearing pin is dovetail cone at the tail end of through hole, guiding bearing pin passes through borehole jack spring, be provided with spring seat outside spring, spring seat is outer to be fixed guiding bearing pin by nut.
Further improvement is: be also provided with copper sheathing in through hole, the dovetail cone fitted seal of copper sheathing and guiding bearing pin.
Further improvement is: the head end passing bearing pin at through hole is provided with step hole one, and step hole one forms accommodating chamber, spring is held the activity space forming spring, and correspondence offers step hole two at guide sleeve place.
Beneficial effect:
The utility model is in use when oil cylinder is lifted to peak, and the relief arrangement on hydraulic cylinder piston contacts with guide sleeve, opens unloading valve and makes the fluid of rodless cavity enter rod chamber, complete unloading function, and protection oil cylinder no longer bears excess pressure.
Be made up of guiding bearing pin, spring and spring seat in the relief arrangement of oil cylinder, when oil cylinder is lifted to peak, guiding bearing pin and guide sleeve bump against, compressed at the effect lower spring of impact force, the valve of relief arrangement is opened, rod chamber and rodless cavity intercommunication, fluid enters rod chamber from rodless cavity, elevating ram realizes the function of off-load, avoids oil cylinder always pressurized when being lifted to peak, and hyperpressure causes oil cylinder distortion, cylinder bottom comes off to cause elevating ram to bear.Because spring has certain spring force when assembling, after lorry is finished down goods, oil cylinder is oppositely pressurizeed, and oil pressure is now less than the elastic force of spring, spring is not compressed, cannot valve opening door, avoid rod chamber and rodless cavity intercommunication, thus reach the double-acting function of final stage.
The dovetail cone fitted seal of copper sheathing and guiding bearing pin prevents the leakage of fluid, does not reach sealing effect.
The setting of step hole ensure that the activity space of spring, prevents from losing efficacy.Offer step hole two at guide sleeve place, after making oil cylinder give rise to extreme higher position, hydraulic cylinder piston contacts with guide sleeve, avoids spring always stressed.
Use the discharging type final stage double-action sleeve telescoping hydraulic cylinder of structure described in the utility model, effectively can solve oil cylinder and complete self off-load when giving rise to peak, avoid oil cylinder to bear larger oil pressure, fly out at the bottom of the oil cylinder caused; Simultaneously oil cylinder can realize stroke limit, effectively solves oil cylinder because cross to lift and by the phenomenon of jointing.
Accompanying drawing explanation
Fig. 1 is original structure schematic diagram.
Fig. 2 is structural representation of the present utility model.
Fig. 3 is the utility model structure working principle schematic diagram.
In figure, 1 be hydraulic cylinder piston, 2 is through holes, and 2-1 is copper sheathing, and 2-2 is step hole one, 2-3 step hole two, 3 is guiding bearing pins, and 3-1 is dovetail cone, and 4 are final stage cylinder barrels, 5 is springs, and 6 is spring seats, 7 are guide sleeves, 8 is final stage piston rods, and 9 are rod chambers, 10 is rodless cavities, and 11 is nuts.
Embodiment
The utility model is as shown in Fig. 2/3.
A kind of quarry tipper telscoping hydaulic cylinder relief arrangement, comprise hydraulic cylinder piston 1, final stage cylinder barrel 4, guide sleeve 7, final stage piston rod 8, hydraulic cylinder piston 1 is provided with relief arrangement, wherein relief arrangement arranges along hydraulic cylinder piston 1 moving direction.
Relief arrangement is, on hydraulic cylinder piston 1, hydraulic cylinder piston 1 moving direction is provided with through hole 2, guiding bearing pin 3 is provided with in through hole 2, guiding bearing pin 3 is dovetail cone 3-1 at the tail end of through hole 2, guiding bearing pin 3 passes through hole 2 cover spring 5, be provided with spring seat 6 outside spring 5, spring seat 6 is outer to be fixed guiding bearing pin 3 by nut 11.
Copper sheathing 2-1 is also provided with, the dovetail cone 3-1 fitted seal of copper sheathing 2-1 and guiding bearing pin 3 in through hole 2.
The head end passing guiding bearing pin 3 at through hole 2 is provided with step hole 2-2, and step hole 2-2 forms accommodating chamber, spring 5 is held the activity space forming spring 5.
In use after the hydraulic cylinder piston 1 in final stage cylinder barrel 4 moves to guide sleeve 7, guiding bearing pin 3 hits guide sleeve 7, and the lead dovetail cone 3-1 of bearing pin 3 of Compress Spring 5 departs from copper sheathing 2-1, and hydraulic oil enters rod chamber 9 from rodless cavity 10, completes off-load.
The dovetail cone 3-1 and copper sheathing 2-1 of guiding bearing pin 3 seals, and can play the function of letting out in preventing.When oil cylinder is lifted to peak, spring 5 compresses, and for protection spring 5 does not bear pressure always, offer step hole two 2-3 at guide sleeve 7 place, after making oil cylinder give rise to extreme higher position, hydraulic cylinder piston 1 contacts with guide sleeve 7, avoids spring 5 always stressed; When oil cylinder oppositely pressurizes, the compressive force of spring 5 is greater than oil pressure, spring 5 can not be compressed, cannot open valve, avoids rod chamber and rodless cavity intercommunication, reaches the double-acting function of final stage.
Claims (4)
1. a quarry tipper telscoping hydaulic cylinder relief arrangement, comprise hydraulic cylinder piston, final stage cylinder barrel, guide sleeve, final stage piston rod, it is characterized in that: on hydraulic cylinder piston, be provided with relief arrangement, wherein relief arrangement arranges along hydraulic cylinder piston moving direction.
2. a kind of quarry tipper telscoping hydaulic cylinder relief arrangement according to claim 1, it is characterized in that: relief arrangement is, on hydraulic cylinder piston, hydraulic cylinder piston moving direction is provided with through hole, guiding bearing pin is provided with in through hole, guiding bearing pin is dovetail cone at the tail end of through hole, guiding bearing pin passes through borehole jack spring, be provided with spring seat outside spring, spring seat is outer to be fixed guiding bearing pin by nut.
3. a kind of quarry tipper telscoping hydaulic cylinder relief arrangement according to claim 2, is characterized in that: be also provided with copper sheathing in through hole, the dovetail cone fitted seal of copper sheathing and guiding bearing pin.
4. a kind of quarry tipper telscoping hydaulic cylinder relief arrangement according to Claims 2 or 3, it is characterized in that: the head end passing bearing pin at through hole is provided with step hole one, step hole one forms accommodating chamber, spring is held the activity space forming spring, correspondence offers step hole two at guide sleeve place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520901066.8U CN205117883U (en) | 2015-11-13 | 2015-11-13 | Mining dump truck telscoping hydaulic cylinder unloading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520901066.8U CN205117883U (en) | 2015-11-13 | 2015-11-13 | Mining dump truck telscoping hydaulic cylinder unloading device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205117883U true CN205117883U (en) | 2016-03-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520901066.8U Active CN205117883U (en) | 2015-11-13 | 2015-11-13 | Mining dump truck telscoping hydaulic cylinder unloading device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205117883U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106740054A (en) * | 2016-12-21 | 2017-05-31 | 湘电重型装备有限公司 | A kind of delivered payload capability is the electric power wheel self-discharging vehicle of 136t |
-
2015
- 2015-11-13 CN CN201520901066.8U patent/CN205117883U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106740054A (en) * | 2016-12-21 | 2017-05-31 | 湘电重型装备有限公司 | A kind of delivered payload capability is the electric power wheel self-discharging vehicle of 136t |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 442500 Hubei Shiyan Yunxian Economic Development Zone, Jia Heng Industrial Park. Patentee after: Hubei Kaihang Polytron Technologies Inc Address before: 442500 Hubei Shiyan Yunxian Economic Development Zone, Jia Heng Industrial Park. Patentee before: Hubei Jiaheng Technology Co., Ltd. |
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| CP01 | Change in the name or title of a patent holder |