CN202065141U

CN202065141U - Piston driving device in hydraulic hand pump

Info

Publication number: CN202065141U
Application number: CN2011201187962U
Authority: CN
Inventors: 刘贵明
Original assignee: Zhangjiagang Aero Actuator Co Ltd
Current assignee: Zhangjiagang Aero Actuator Co Ltd
Priority date: 2011-04-21
Filing date: 2011-04-21
Publication date: 2011-12-07
Anticipated expiration: 2021-04-21

Abstract

The utility model discloses a piston driving device in a hydraulic hand pump. The piston driving device comprises a pump housing, wherein a propeller casing is movably arranged in the pump housing, the minor caliber end of the propeller casing extends out of one end of the pump housing and then is fixedly connected with an operating hand wheel, a plunger piston is movably arranged in the propeller casing, two spiral guide grooves mutually circulated in a way of closed loop are arranged on the outer circumference of the piston, at least one propeller is installed in the propeller casing, one end of the propeller extends into the same guide groove, and the piston driving device adopts a specific structure between the two spiral guide grooves mutually circulated in a way of closed loop and the propeller: when one propeller spirally moves to the tail end of the spiral guide groove in the spiral guide groove, the propeller automatically slides into the other spiral guide groove to make spiral motion in the opposite directions. The piston driving device is steady in the operation process, the required space is small, and therefore the piston driving device is suitable for an electrohydraulic, pneumatic-hydraulic or hydraulic actuating mechanism.

Description

Piston driver in the hydraulic hand-pump

Technical field

The utility model relates to employed hydraulic hand-pump in the electrohydraulic control, refers more particularly to the piston driver in the hydraulic hand-pump.

Background technique

Emergency power output under the debugging and the state of emergency has obtained extensive various application to hydraulic hand-pump as hydraulic system, its principle is that operating grip drive piston moves reciprocatingly, order opening and closing by two one-way valves, finish the process of oil suction and the certain volume pressure oil of output, general hydraulic hand-pump all is to drive the structural type that piston pumps by handle by linkage mechanism, its advantage is simple in structure, and cost is low; Shortcoming is that the guidance quality of piston is bad, and piston weares and teares easily, influence sealing, and the shared space of operating grip to-and-fro motion is bigger, can not be applicable to the occasion that the operating space is compact, and application area is restricted.

The model utility content

Technical problem to be solved in the utility model is: thus piston driver in the less hydraulic hand-pump that can enlarge application area in a kind of action required space will be provided.

For solving the problems of the technologies described above, the technical solution adopted in the utility model is: the piston driver in the described hydraulic hand-pump, comprise: pump case, be movably set with the propulsion device housing in the pump case, the small-caliber end of propulsion device housing is fixedlyed connected with the operation handwheel after stretching out an end of pump case, be movably set with plunger piston in the propulsion device housing, one end of piston stretches out the other end of pump case, the excircle of piston is provided with the spiral guide slot of two mutual closed loop cycle, at least one propulsion device is installed in the propulsion device housing, and an angle of rake end stretches in same the guiding groove; Article two, the spiral guide slot of mutual closed loop cycle and the specific constructive form between the propulsion device are: when propulsion device when spiral motion is to the tail end of this guiding groove in a certain spiral guide slot, propulsion device can slide in another spiral guide slot automatically to oppositely for the helical movement on the contrary.

Be provided with two propulsion devices in the above in the described propulsion device housing.

The beneficial effects of the utility model are: utilize the rotation motion of handwheel and the driving mechanism of spiral rotation efficiently, make piston realize to-and-fro motion, thereby finish oil suction and fuel-displaced process; Adopt the steering capability of structure back piston of the present utility model better, it is more steady to move, and ring wear is also littler, and steady, the required operating space of operating process is also less, has expanded the application area of hydraulic hand-pump.

Description of drawings

Fig. 1 is the decomposition texture schematic representation of the piston driver in the hydraulic hand-pump described in the utility model;

Fig. 2 is the structure for amplifying schematic representation of the plunger piston shown in Fig. 1;

Fig. 3 is the plane outspread drawing of the spiral guide slot of last two the mutual closed loop cycle in plunger piston shown in Figure 2 surface;

Fig. 4 is the overall structure schematic representation of exploded view shown in Figure 1 assembling after complete.

Embodiment

The utility model will be further described below in conjunction with the drawings and specific embodiments.

As Fig. 1, Fig. 2, shown in Figure 3, piston driver in the hydraulic hand-pump described in the utility model, comprising: pump case---the pump case described in the present embodiment is made up of protecgulum 2 and bonnet 5, protecgulum 2 and bonnet 5 are mutually permanently connected by bolt 6, be movably set with propulsion device housing 10 in the pump case, the small-caliber end of propulsion device housing 10 stretches out pump case bonnet 5 backs fixedlys connected with operation handwheel 7 with positioning screwn 8, be movably set with plunger piston 3 in the propulsion device housing 10, one end of plunger piston 3 stretches out the protecgulum 2 of pump case, when using, reality also is provided with stuffing box gland 1 between plunger piston 3 and the protecgulum 2, the excircle of piston 3 is provided with the

spiral guide slot

31 and 32 of two mutual closed loop cycle, two

propulsion devices

4 and 9 are installed in the propulsion device housing 10---in the present embodiment, in two

propulsion devices

4 and 9 two mounting holes that are installed in respectively on the propulsion device housing 10, propulsion device 4 and an end of 9 stretch in same the guiding groove; Article two, the

spiral guide slot

31,32 of mutual closed loop cycle and the specific constructive form between the

propulsion device

4,9 are: when a

propulsion device

4 or 9 when spiral motion is to the tail end of this guiding groove in a certain spiral guide slot,

propulsion device

4 and 9 will slide in another spiral guide slot automatically to oppositely for the helical movement on the contrary.Overall structure after the utility model assembling is referring to shown in Figure 4.

Working principle of the present utility model is: rotary manipulation handwheel 7 during work, drive 10 rotations of propulsion device housing, make

propulsion device

4 and 9 for the helical movement in the

spiral guide slot

31 and 32 of two mutual closed loop cycle:

propulsion device

4 and 9 for the helical movement in spiral guide slot 31 when supposing beginning, then plunger piston 3 under the effect of

propulsion device

4 and 9 to a certain direction moving linearly, when

propulsion device

4 or 9 moves to the tail end of this guiding groove 31,

propulsion device

4 and 9 can slide in another spiral guide slot 32 automatically to oppositely for the helical movement on the contrary, drives plunger piston 3 moving linearly round about---toward swivel motion; When

propulsion device

4 or 9 moved to the tail end of guiding groove 32,

propulsion device

4 and 9 can slide in the spiral guide slot 31 for the helical movement again automatically.So constantly circulation makes piston 3 realize to-and-fro motion, thereby finishes oil suction and fuel-displaced process; Adopt the steering capability of structure back piston 3 of the present utility model better, it is more steady to move, and ring wear is also littler, and steady, the required operating space of operating process is also less, thereby has expanded the application area of hydraulic hand-pump.

Claims

1. the piston driver in the hydraulic hand-pump, comprise: pump case, it is characterized in that: be movably set with the propulsion device housing in the pump case, the small-caliber end of propulsion device housing is fixedlyed connected with the operation handwheel after stretching out an end of pump case, be movably set with plunger piston in the propulsion device housing, one end of piston stretches out the other end of pump case, the excircle of piston is provided with the spiral guide slot of two mutual closed loop cycle, at least one propulsion device is installed in the propulsion device housing, an angle of rake end stretches in same the guiding groove, article two, the spiral guide slot of mutual closed loop cycle and the specific constructive form between the propulsion device are: when propulsion device when spiral motion is to the tail end of this guiding groove in a certain spiral guide slot, propulsion device can slide in another spiral guide slot automatically to oppositely for the helical movement on the contrary.

2. the piston driver in the hydraulic hand-pump according to claim 1 is characterized in that: be provided with two propulsion devices in described propulsion device housing.