CN2226592Y - Hand-operated speed-regulating hydraulic porter - Google Patents
Hand-operated speed-regulating hydraulic porter Download PDFInfo
- Publication number
- CN2226592Y CN2226592Y CN95243493U CN95243493U CN2226592Y CN 2226592 Y CN2226592 Y CN 2226592Y CN 95243493 U CN95243493 U CN 95243493U CN 95243493 U CN95243493 U CN 95243493U CN 2226592 Y CN2226592 Y CN 2226592Y
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- Prior art keywords
- oil
- utility
- lift
- model
- hydraulic carrier
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- Expired - Fee Related
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- Forklifts And Lifting Vehicles (AREA)
Abstract
The utility model belongs to hand-operated lifting and hauling equipment, and the utility model is mainly composed of a front wheel, a bracket for a goods fork, a rear wheel, a base, a lifting oil cylinder, a working oil pump and an operating handle. The utility model is characterized in that the operating handle adopts a plug-in type structure, and a safety valve and a speed-governing lift-control valve are installed on the working oil passage of the base. The utility model has the advantages of compact and reasonable structure, convenient installation and maintenance and safe and reliable operation; a lifting gear, a rapid-descending gear, a slow-descending gear and a no-load gear are arranged on the utility model; thus, the utility model not only improves work efficiency, but also the utility model puts an end to all accidents which can occur during the operation of the utility model.
Description
The utility model relates to a kind of handbarrow that manually hoists.
The manual type transport trolley is a kind of handbarrow that hoists commonly used in present factory floor, the warehouse.In order to improve the work efficiency of manual transport trolley, I had once designed a kind of hand hydraulic carrier (seeing Chinese patent CN93225979.0).This hand hydraulic carrier mainly comprises parts such as front-wheel, goods shelf, trailing wheel, base, lift oil tank, work oil pump, bar handle, and has added a lift controil valve in the base working oil path.Though it has solved the insurmountable speed governing lifting of manual transport trolley problem, because its lift controil valve structure is comparatively complicated, the lift oil tank structure is unreasonable, adds safety device in addition, so still break down unavoidably in the work, influences its safety in production.In addition, because the bar handle of hand hydraulic carrier is not quick detachable,, also brought inconvenience for the commentaries on classics field boundary of hand hydraulic carrier, transportation so volume is bigger.
Problem in view of above-mentioned existence, the purpose of this utility model provides that a kind of lift controil valve structure is comparatively simple, lift oil tank is rational in infrastructure, safe and reliable, and bar handle be easy to dismantle, and can arbitrarily control the manual governing hydraulic carrier of lift oil tank rising or falling speed according to its working condition requirement.
Technical solution of the present utility model is: in the base working oil path of manual governing hydraulic carrier, added a speed governing lift controil valve and a safety valve.On the piston rod of lift oil tank, added a piston rod guide thimble.In the speed governing lift controil valve, be provided with spacing control pin and flow regulating valve.Spacing control pin and flow regulating valve are controlled by the oil return bar.The oil return bar can be according to the different operating situation of hand hydraulic carrier, the rising or falling speed of lift oil tank is divided into hoist, descend fast, descend at a slow speed and four gears such as neutral gear.Guide thimble on the piston rod then can guarantee the working stability of lift oil tank effectively.Through after the above-mentioned design, not only solved the speed governing lifting problem of hand hydraulic carrier lift oil tank effectively, and guaranteed the safety in production of hand hydraulic carrier.
In addition,, its bar handle is designed to the plug-in structure, like this, had both simplified installation, reduced volume, also made things convenient for the transportation of commentaries on classics field boundary for the ease of the dismounting of hand hydraulic carrier bar handle.
Specific embodiments of the present utility model is as shown in drawings:
Fig. 1 is an appearance structure scheme drawing of the present utility model
Fig. 2 is the structural representation of bar handle part of the present utility model
Fig. 3 is that the side of the part of the utility model bar handle is shown structural representation
Fig. 4 is the structural representation of interior working oil path of the utility model base and lift controil valve
Below with reference to the accompanying drawings, embodiment of the present utility model is elaborated:
The manual governing hydraulic carrier includes parts such as front-wheel 1, goods shelf 2, trailing wheel 3, base 4, lift oil tank 5, work oil pump 6, bar handle 7.Bar handle 7 is the plug-in structure.Bar handle 7 is fixed on the bar handle seat 13 by bolt 12.On the working oil path of base 4, be provided with a safety valve 23 and a speed governing lift controil valve.Safety valve 23 can be guaranteed the safety in production of manual governing hydraulic carrier effectively.The speed governing lift controil valve is installed on lift oil tank 5 and the oil circuit of work between the oil pump 6.The speed governing lift controil valve contains the spool 27 that one one end is cone.At spool 27 radially, be provided with oil through 28,, be provided with speed limit oilhole 29, two oilholes and communicate axially.At an end of spool 27, be provided with a check valve 30.One end of check valve 30 is provided with a spacing control pin 31.The other end of spacing control pin 31 is provided with check valve 32.One end of the radially oil through 28 on the spool communicates with lift oil tank 5, and the other end communicates with work oil pump 6 by axial speed limit oilhole 29, check valve 30, spacing control pin 31, oil circuit A.Have the good operation reliability at work in order to ensure spool and spacing control pin, the core cross section of spool 27 is an equilateral polygon cylinder structure, and the cross section of spacing control pin 31 also is the cylindrical structure of equilateral polygon.
The spool 27 of speed governing lift controil valve positions and seals by spring 26, seal ring 25 and nut 24.The other end at spool 27 and check valve 32 is provided with transfer bar mechanism.Transfer bar mechanism is made up of push rod 10, push rod nut seat 11, spring 33 and seal ring 34.One end of push rod 10 is connected by connecting rod mechanism 9 gear control stalks 8 direct and on the bar handle 7.Gear control stalk 8 and connecting rod mechanism 9, push rod 10 and speed governing lift controil valve constitute the hoisting of manual governing hydraulic carrier jointly, descend fast, four gears such as decline, neutral gear at a slow speed.
Lift oil tank 5 includes piston rod 14 and oil cylinder seat 20 two parts.On piston rod 14, be equipped with a piston rod guide pin bushing 18, to improve its working stability.Piston rod guide pin bushing 18 can be designed to one-piece construction, and its lower end is provided with screw thread, and is installed on the oil cylinder seat 20 upper end by screw thread and is installed on the guide pin bushing seat 17 on the fuel tank.Between piston rod guide pin bushing 18 and the oil cylinder seat 20, be provided with seal ring 19.For guaranteeing to have good sealing effectiveness between piston rod and the oil cylinder seat, seal ring 19 adopts the YX RunddichtringO.In addition, on piston rod guide pin bushing 18, also be provided with dust protecting cap 15 and seal ring 16.So not only simplified the integral structure of lift oil tank, and given the installation of lift oil tank, maintenance also brings great convenience.
In order thoroughly to solve the leakage of oil problem of the work oil pump on the present hydraulic carrier, the utility model also on the pump core 21 of work oil pump, has added a pump core piston ring 22 that adopts polytetrafluoroethylene to make.
The hoisting of manual governing hydraulic carrier, descend fast, descend at a slow speed, the mode of operation of neutral gear is achieved like this:
When the gear control stalk 8 on the bar handle 7 has been in when upgrading, promptly 10 pairs of check valves 32 of push rod are inoperative.At this moment, if upper and lower pressing bar handle 7, oil pump 6 work of then working.During work oil pump 6 oil suctions, check valve 32 is opened, and power fluid sucking-off in the fuel tank is in oil circuit enters the pump chamber of work oil pump.When 6 compressions of work oil pump, check valve 32 is closed, and pressure oil backs down check valve 30 through oil circuit A, and spool 27 is moved to the left.At this moment, the speed governing lift controil valve is in the P PARK Position P that hoists, and pressure oil directly enters lift oil tank 5 by oil circuit C, promotes piston and rises, and finishes its motion that hoists.
When the gear control stalk 8 on the bar handle 7 was in neutral gear, promptly push rod 10 backed down check valve 82, make check valve 32 be in normally open, and check valve 30 was in normally off.Also print the speed governing lift controil valve and be in Neutral Position.At this moment, if upper and lower pressing bar handle 7, though 6 work of work oil pump because check valve 32 is inoperative, do not produce pressure oil, so can't open check valve 30 in the working oil path.Like this, the power fluid that pumps from work oil pump 6 is directly got back to fuel tank through oil circuit.Be that lift oil tank 5 is not worked, be in neutral state.
When the gear operating lever on the bar handle 78 is in when lowering category down at a slow speed, promptly push rod 10 backs down check valve 32, and sells 31 open check valve 30 by spacing control.At this moment, the speed governing lift controil valve is in and descends downshift position at a slow speed, pressure oil in the lift oil tank 5 through oil circuit C by the radially oil through 28 on the spool 27, axial speed limit oilhole 29, the gap around check valve 30 through opening, the spacing control pin 31 and the check valve 32 of unlatching, get back to lentamente in the fuel tank by oil circuit then, make the piston band of lift oil tank load and descend lentamente.When the gear operating lever on the bar handle 78 was in quick-drop catch, promptly push rod 10 backed down check valve 32, and when selling 31 open check valve 30 by spacing control, spool 27 was moved to the left.At this moment, the speed governing lift controil valve is in the quick-drop catch position, pressure oil in the lift oil tank 5 is through oil circuit C, directly by the space around the check valve of opening 30, the spacing control pin 31 and the check valve 32 of unlatching, get back in the fuel tank fast by oil circuit, thereby the piston of lift oil tank can be descended fast.
The dismounting of the bar handle of manual governing hydraulic carrier, install all very easyly, as long as absent-mindedness bolt 12, bar handle 7 seals can be extracted from bar handle seat 13.Like this, not only simplify assembly process, and also brought facility for packing and transportation.
The manual governing hydraulic carrier is rational in infrastructure, compact, and installation, maintenance is convenient, safety of operation, reliable, and it has not only improved the work efficiency of hand hydraulic carrier effectively, and has thoroughly stopped contingent all contingencies in the operation process.
Claims (8)
1, a kind of manual governing hydraulic carrier, include front-wheel (1), goods shelf (2), trailing wheel (3), base (4), lift oil tank (5), work oil pump (6), bar handle parts such as (7), the bar handle (7) that it is characterized in that this manual governing hydraulic carrier is the plug-in structure, bar handle (7) is fixed on the bar handle seat (13) by bolt (12), on the working oil path of base (4), be provided with a safety valve (23) and a speed governing lift controil valve.
2, manual governing hydraulic carrier according to claim 1, it is characterized in that described speed governing lift controil valve contains the spool (27) that one one end is cone, at spool (27) radially, be provided with oil through (28), axially, be provided with speed limit oilhole (29), two oilholes communicate, end at spool (27), be provided with a check valve (30), one end of check valve (30) is provided with a spacing control pin (31), the other end of spacing control pin (31), be provided with check valve (32), an end of the radially oil through (28) on the spool communicates with lift oil tank (5), and the other end is by axial fast oilhole (29), check valve (30), spacing control pin (31), oil circuit A communicates with work oil pump (6).
3, manual governing hydraulic carrier according to claim 1 and 2, the core cross section that it is characterized in that described spool (27) are equilateral polygon cylinder structure.
4, manual governing hydraulic carrier according to claim 1 and 2, the cross section that it is characterized in that described spacing control pin (31) is the cylindrical structure of equilateral polygon.
5, manual governing hydraulic carrier according to claim 1 is characterized in that described lift oil tank (5) includes piston rod (14) and oil cylinder seat (20) two parts, on piston rod (14), is provided with a piston rod guide pin bushing (18).
6, manual governing hydraulic carrier according to claim 5, it is characterized in that described piston rod guide pin bushing (18) is an one-piece construction, its lower end is provided with screw thread, and be installed on the guide pin bushing seat (17) on the fuel tank by screw thread, between piston rod guide pin bushing (18) and the oil cylinder seat (20), be provided with seal ring (19).
7,, it is characterized in that described seal ring (19) is the YX RunddichtringO according to claim 1 or 6 described manual governing hydraulic carriers.
8, manual governing hydraulic carrier according to claim 1 is characterized in that the pump core (21) at the work oil pump, is equipped with a pump core piston ring (22) that adopts polytetrafluoroethylene to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95243493U CN2226592Y (en) | 1995-02-27 | 1995-02-27 | Hand-operated speed-regulating hydraulic porter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95243493U CN2226592Y (en) | 1995-02-27 | 1995-02-27 | Hand-operated speed-regulating hydraulic porter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2226592Y true CN2226592Y (en) | 1996-05-08 |
Family
ID=33884086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95243493U Expired - Fee Related CN2226592Y (en) | 1995-02-27 | 1995-02-27 | Hand-operated speed-regulating hydraulic porter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2226592Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103818415A (en) * | 2014-03-11 | 2014-05-28 | 上海交通大学 | Hydraulic carrier special for ballastless track plate reinforcement cage |
| CN108591143A (en) * | 2018-06-09 | 2018-09-28 | 湖北脉辉金茂机械有限公司 | Oil circuit concealed electric floor truck |
| CN111498727A (en) * | 2020-04-14 | 2020-08-07 | 富阳通力机械制造有限公司 | Jack with pump core protection structure and use method |
-
1995
- 1995-02-27 CN CN95243493U patent/CN2226592Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103818415A (en) * | 2014-03-11 | 2014-05-28 | 上海交通大学 | Hydraulic carrier special for ballastless track plate reinforcement cage |
| CN108591143A (en) * | 2018-06-09 | 2018-09-28 | 湖北脉辉金茂机械有限公司 | Oil circuit concealed electric floor truck |
| CN108591143B (en) * | 2018-06-09 | 2023-09-22 | 湖北脉辉金茂机械有限公司 | Electric carrying trolley with concealed oil circuit |
| CN111498727A (en) * | 2020-04-14 | 2020-08-07 | 富阳通力机械制造有限公司 | Jack with pump core protection structure and use method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |