CN2185746Y

CN2185746Y - Hand and pedal double operating device for draw-bar type jack

Info

Publication number: CN2185746Y
Application number: CN 93248136
Authority: CN
Inventors: 洪茂雄
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-12-28
Filing date: 1993-12-28
Publication date: 1994-12-21
Anticipated expiration: 2003-12-28

Abstract

The utility model relates to a hand and pedal double operating device for pull type jacks, which is mainly formed by that a set of pedals in a short handle shape for hand-operated or foot-driven transmission is additionally arranged on the abdomen of the movable seat of a hand-operated operating rod and a plunger of a pump. The pedals are fixedly arranged on a frame plate at one side of the jack by a common pivot which simultaneously penetrates through the pedals and the movable seat of the hand-operated operating rod, and the pedals are repeatedly pushed up by a hidden type return spring. The pumping function is generated when the pump plunger is driven by the pedals, a lifting arm is lifted gradually and the purposes of supporting and holding heavy articles are obtained.

Description

Hand and pedal double operating device for draw-bar type jack

The utility model relates to the hand of a kind of tension bar type jack and foot-operated dual operation device, it is characterized in that the sliding seat belly of the hand control lever of this jack and pump plunger top sets up one group of weak point device with pedal, make holding operation and can having the hand dual utilization benefit of riding that reaches simultaneously of jack.

The tension bar type of commonly seeing jack, lie in it and lift the arm appropriate location, the expansion link that is provided with one group of tension bar fuel feeding cylinder pressure is done the election action of reciprocal drawing, lift the purpose that arm progressively rises and holds to reach in order to do making, precisely because operating mode only is with a big and heavy control lever, provide user's repetitiousness to shake the application of force, so do not have other selection approach because of being limited by single operating mode in its use, Chang Wufa further is fit to the use of special status, and do not meet the raising and the laborsaving principle of work efficiency, it be the reasons are as follows:

When the operator is placed in load thing below with jack, usually still there is a segment distance between the act dish of load thing and jack, this segment distance look the load thing different its spacing length also inconsistent, but no matter the act dish is big or small with the distance of load thing, all must shake control lever makes and lifts arm and up extend to the act dish and reach till the contact condition with the load thing in advance, begin further to hold the action that rises, yet the former system of jack utilizes the lever force-saving principle, need the hand control lever of mat one thick length constantly to shake, beginning can be brought into play the function of lifting, so control lever all mostly is the design of certain thick length, and in fact when jack act card does not reach the contact load thing as yet, the operator must not spend much strength can make act arm liter raise, but be limited to the do type of drive of single operation bar of this jack, so the operator still will grab the not only long but also heavy control lever of work, constantly bend over, very the waist beginning restrains and finishes the preliminary activities that the act dish contacts with weight, by being, not only make operator's fatigue, work efficiency also phase shape reduces, it more can discuss part: this preliminary activities that rises is a kind of waste muscle power completely, influences the unreasonable design of efficient.

The main purpose of the utility model is to be to provide the hand of a kind of tension bar type jack and foot-operated dual operation device, and it can reduce the labour and pays, and then increases work efficiency.

A time purpose of the utility model is to provide the hand of a kind of tension bar type jack and foot-operated dual operation device, and it can guarantee that the composition of returning spring does not have the anxiety that exposes.

According to the hand of tension bar type jack of the present utility model and foot-operated dual operation device, be to comprise by hand control lever, sliding seat, pedal, crank pin, pedal pivot, pedal returning spring, sliding seat torsion spring and pump plunger being constituted, it is characterized in that:

Sliding seat is to be extended with three bursts of ribs downwards, makes two ribs in its neighbour's framework plate left side all form the groove ora terminalis of circular curved arc;

Pedal, short for being one shape, system at one end forms empty crotch among the suitable length, make this hollow crotch just can be inserted between aforementioned two ribs, and empty therein crotch both sides are provided with two circular lugs and two perforated holes, the hollow crotch is inserted between two ribs can imposes the location by the curved arc groove that two lugs adhere on ribs, the pedal top ends then can be for driving the application of force;

Crank pin is the pin-and-hole through pedal two circular lugs, and pedal is linked in it " Contraband " shape chute of pump plunger, in order to do to push or to draw plunger pump oil;

Pedal pivot, system is a bolt body of rod, make front end have a nut, suitable thread segment is established in the stage casing, uses a sheathed in advance packing ring and runs through a sealed ring and an outer ring set, and in advance returning spring is sheathed on tube and encircles, and then utilize pivot that the outer shroud cover is locked in a bogie side frame structure plate, be located between outer ring set and the pedal lug so that returning spring is just hidden, make this returning spring one end wear and be positioned outer ring set, the then suitable hook of the other end is located at crank pin and is in conjunction with the location;

Via above-mentioned group constitutive element part, pedal can be inserted between two ribs of described sliding seat, mat pedal two lugs adhere on the recessed ora terminalis of circle of two ribs, and make pedal be linked in it " Contraband " shape chute of pump plunger through two lugs with crank pin, can utilize crank pin directly to oppress it " Contraband " shape chute of pump plunger when making pedal drive, with pump plunger repetitiousness push drawing to reach pump oil effect, and make two circular lug outer rims just can adhere on the recessed ora terminalis of circle on two ribs of sliding seat, make pedal also can between accept hand control lever and drive and produce pump oil effect.

In the hand of tension bar type jack of the present utility model and foot-operated dual operation device, this pedal extends to form a tubing string with respect to the other end of hollow crotch by body, makes this tubing string just can sheathedly step on dual-purpose bar to holding of shape in conjunction with a weak point.

Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing:

Figure 1 shows that the exploded perspective view of the utility model.

Figure 2 shows that the combination section of the utility model.

Figure 3 shows that the combination stereogram of the utility model.

Figure 4 shows that the combination stereogram of another embodiment of pedal in the utility model.

As shown in drawings, the hand and foot-operated dual operation device of the utility model, main system is combined by a hand control lever 1, sliding seat 2, pedal 3, crank pin 4, pedal pivot 5 and a pedal returning spring 6, wherein:

Control lever 1, system is fixedly arranged on sliding seat 2 upper ends, promote to produce pumping effect for hand repetitiousness with compressing pump plunger 7, sliding seat 2 then formation is stretched out three bursts of ribs 21,22,23 downwards, and, impose the frame fixed bit with a pedal pivot 5 and right pivot 51 respectively, simultaneously by the very heavy top of supported on both sides rib 21,23 cooperations side frames structure plate 8, make the ora terminalis of described ribs 21,23 be shaped to a Zhou Jing with slick and sly groove surface 211,221, in order to do holding into holding for pedal 3 set lugs;

Pedal 3, for being a suitable weak point shape, system at one end forms empty crotch 31 among the suitable length, this hollow crotch 31 just can be inserted in ribs 21,22, and with its lug 32 holdings location, and utilize the boss moulding and the described ribs 21 of two lugs, 22 round recessed 211,221 are the cooperation of corresponding curved arc, and the both-side ends of this hollow crotch 31 also is provided with two holes 33 that can run through, in addition, the other end of described pedal 3, system extends to form a tubing string 34 by body, and make this tubing string 34 just can sheathedly step on dual-purpose bar 35 to holding of shape in conjunction with a weak point, only this pedal 3 then also can make the body elongated end form a flats in practice and step on sheet 36(as shown in Figure 4) equivalence enforcement, all belong to feasible;

Crank pin 4 is to entreat pin-and-hole among pin closes described two lugs 32, makes pedal 3 get this crank pin 4 of mat to be placed in pump plunger 7 they " Contraband " shape chutes 71;

Pedal pivot 5, for being a bolt body of rod, front end has a nut 51, suitable thread segment 52 is established in the stage casing, it mainly is to be to run through a sealed ring 54 and outer ring set 55 in order to a sheathed packing ring 53 in advance, and run through ribs 21,22 and pedal hole 33 in the lump, and in advance returning spring 6 is sheathed on this ring 54, and then this pivot 5 of mat is with between outer ring set 55 and the pedal lug 34, returning spring 6 one ends are worn be positioned outer ring set 55, the other end then is located at crank pin 4(as shown in Figure 2 with curved hook) be in conjunction with the location;

The right side ribs 23 of above-mentioned sliding seat 2, be directly to pass framework plate 8 right sides to run through the location with it by a right pivot 51, make sliding seat 2 must be the state that an activity is articulated in both sides framework plate 8, and mat one spring 9 is inserted in right pivot 51, prop up oil pressure pedestal 10 tops with the one end, one end upwards and fastening in the appropriate location of sliding seat 2, in order to do recovery elastic force required so that sliding seat 2 rotations to be provided.

Operating process in the reality use, when jack act dish before thing do not contact with load as yet, the operator can be directly with hand or foot-operated driving pedal, with extremely light laborsaving and immediate mode the act dish is risen to the load thing rapidly and do the contact that holds, at this moment, the sliding seat attitude of remaining stationary is motionless, only provide the required action that holds by pedal, be right after work, the act dish has reached when tentatively holding the contact weight, just can use laborsaving bigger hand control lever instead, in order to do continuing progressively to finish the work of holding, only this sliding seat is stressed when shaking, though affect pedal to carry out synchronous displacement in the lump, right because sliding seat pressure is much larger than the strength of reversing of pedal, so for the influence that the application of force does not all have any inconvenience of shaking of control lever, and still can reach laborsaving, the rapid phase of giving effect.

Claims

1, a kind of hand and foot-operated dual operation device of tension bar type jack is to comprise by hand control lever, sliding seat, pedal, crank pin, pedal pivot, pedal returning spring, sliding seat torsion spring and pump plunger being constituted, and it is characterized in that:

Pedal, short for being one shape, system at one end forms empty crotch among the suitable length, make this hollow crotch just can be inserted between aforementioned two ribs, and empty therein crotch both sides are provided with two circular lugs and two perforated holes, the hollow crotch is inserted between two ribs can imposes the location by the curved arc groove that two lugs adhere on ribs, the pedal top ends then is can be for driving the application of force;

2, the hand and foot-operated dual operation device of tension bar type jack according to claim 1, it is characterized in that, this pedal extends to form a tubing string with respect to the other end of hollow crotch by body, makes this tubing string just can sheathedly step on dual-purpose bar to holding of shape in conjunction with a weak point.