CN2185746Y - Double operating device of hand crank and foot pedal for tension rod type jack - Google Patents

Abstract

A hand-operated and pedal dual-operation device for a tension jack is characterized in that a set of short-handle-shaped pedals for hand-operated or pedal transmission is additionally arranged on the belly of a movable seat of a hand-operated operating rod and a plunger of a pump, the short-handle-shaped pedals are fixedly arranged on a side frame plate of the jack by a common pivot simultaneously penetrating through the pedals and the movable seat of the hand-operated operating rod, and a hidden return spring is used for pushing up the pedal fertilizer, so that the pedals drive the plunger of the pump to generate the pumping effect, and a lifting arm is gradually lifted, thereby achieving the purpose of supporting a heavy object.

Description

The utility model relates to a hand-operated and foot-operated double operating device of a tension rod type jack, which is characterized in that a group of short pedal devices are added on the belly of the movable seat of the hand-operated operating rod of the jack and above the plunger of the pump to make the top of the jack The holding operation can have the dual use benefits of hand cranking and pedaling at the same time.

The common tension rod type jack is tied to the appropriate position of the lifting arm, and a set of tension rod is provided for the telescopic rod of the oil pressure cylinder to perform reciprocating pulling and pushing action, so that the lifting arm can be gradually lifted to achieve the purpose of jacking, but its operation The method is only to use a thick and heavy operating rod to provide the user with repeated shaking and applying force. Therefore, it is restricted by a single operation method and has no other options during use. It is often not suitable for special conditions and does not meet the work efficiency. The reasons for improving and saving labor are as follows:

When the operator places the jack under the load, there is usually still a certain distance between the load and the lifting plate of the jack. Whether the distance is large or small, it is necessary to shake the operating lever first to extend the lifting arm until the lifting plate reaches the contact state with the load, and then it is possible to carry out further lifting actions. The long hand-operated operating rod is constantly shaken to perform the lifting function. Therefore, the operating rods are mostly designed to be thick and long. In fact, when the lifting surface of the jack has not yet touched the load, the operator does not need to lift it. It takes a lot of effort to raise the arm, but due to the transmission mode of the single operating lever of the jack, the operator still has to hold the long and heavy operating lever, bend and straighten the waist continuously to complete the lifting. The preparatory action of lifting the plate and contacting the heavy object not only makes the operator tired, but also reduces the work efficiency. What is even more debatable is that the preparatory action of lifting is a waste of physical strength and affects Unreasonable design for efficiency.

The main purpose of the present utility model is to provide a dual operation device of a tension rod type jack by hand and pedal, which can reduce labor and improve work efficiency.

The second object of the present utility model is to provide a dual operation device for a tension rod type jack, which can be operated by hand and by pedals, which can ensure that the composition of the return spring is not exposed.

According to the utility model, the hand-operated and foot-operated double operating device of the tension rod type jack comprises a hand-operated operating rod, a movable seat, a pedal, a crank pin, a pedal pivot, a pedal return spring, a movable seat torsion spring and a pump column. Constituted by a plug, characterized in that:

The movable seat has three supporting ribs protruding downward, so that the two supporting ribs adjacent to the left side of the frame plate are formed with circular curved groove ends;

The pedal is in the shape of a short handle, tied at one end to form a hollow fork frame of appropriate length, so that the hollow fork frame can be inserted between the aforementioned two supporting ribs, and two circular rings are arranged on both sides of the hollow fork frame. Shaped lugs and two through holes, so that the hollow fork can be inserted between the two supporting ribs, and the two lugs can be placed on the curved grooves of the supporting ribs for positioning, and the top of the pedal can be used for driving and applying force;

The crank pin runs through the pin hole of the two circular lugs of the pedal, and connects the pedal to the "匚" shaped chute of the pump plunger to push or pull the plunger to pump oil;

The pedal pivot is a bolt rod body, which has a nut at the front end, and a suitable threaded section in the middle section, so as to pre-set a washer to penetrate and lock a cylinder ring and an outer ring sleeve, and pre-set the return spring on the The cylinder ring, and then use the pivot to lock the outer ring sleeve to one side of the frame plate, so that the return spring is just hidden between the outer ring sleeve and the pedal lug, so that one end of the return spring can be worn and positioned on the outer ring sleeve, And the other end is properly hooked on the crank pin to be combined and positioned;

Through the above-mentioned structural elements, the pedal can be placed between the two supporting ribs of the movable seat, and the two lugs of the pedal can be attached to the round concave ends of the two supporting ribs, and the crank pin can be inserted through the two lugs so that The pedal is connected to the "匚" shaped chute of the pump plunger, so that when the pedal is driven, the crank pin can be used to directly press the "匚" shaped chute of the pump plunger, pushing and pulling the pump plunger repeatedly to achieve the oil pumping effect , and the outer edges of the two round lugs can be attached to the round concave ends of the two supporting ribs of the movable seat, so that the pedal can also be indirectly driven by the manual operating rod to produce oil pumping effect.

In the hand-operated and foot-operated double operating device of the tension rod type jack of the present invention, the pedal is extended from the body to form a pipe column relative to the other end of the hollow fork frame, so that the pipe column can be sleeved and combined with a short Handle-shaped dual-purpose pole for grip and step.

Embodiment of the utility model is described in detail below in conjunction with accompanying drawing:

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

Figure 2 is a combined sectional view of the utility model.

Figure 3 shows a combined perspective view of the utility model.

Fig. 4 shows the assembled perspective view of another embodiment of the pedal in the utility model.

As shown in the accompanying drawings, the hand-operated and pedal-operated dual operating device of the present utility model is mainly composed of a hand-operated operating lever 1, a movable seat 2, a pedal 3, a crank pin 4, a pedal pivot 5 and a pedal return spring 6. composed of:

The operating rod 1 is fixed on the upper end of the movable seat 2, and is repeatedly pushed by hand to press the pump plunger 7 to produce oil pumping effect, while the movable seat 2 forms three support ribs 21, 22, 23 protruding downwards, and is formed by Both side support ribs 21, 23 cooperate with the frame plates 8 on both sides of the top of the jack, and a pedal pivot 5 and a right pivot 51 are used to fix the frame respectively. At the same time, the end edges of the support ribs 21, 23 are formed into a Have the circumference of the smooth groove surface 211, 221, so that the lugs provided by the pedal 3 can be accommodated and locked;

Pedal 3, for being a suitable short handle shape, is tied at one end to form a hollow fork frame 31 of suitable length, makes this hollow fork frame 31 just can be inserted between support rib 21,22, and with its lug 32 card position, and use the circular convex shape of the two lugs to cooperate with the circular grooves 211, 221 of the support ribs 21, 22 to form a corresponding curved arc, and the ends of both sides of the hollow fork frame 31 are provided with penetrating holes. Two holes 33. In addition, the other end of the pedal 3 is extended from the main body to form a column 34, so that the column 34 can be sleeved and combined with a short handle-shaped dual-purpose rod 35 for holding and stepping. 3 In practical application, the equivalent implementation of forming a flat step 36 (as shown in Figure 4) at the extension end of the main body is feasible;

The crank pin 4 is pinned to the central pin hole of the two lugs 32, so that the pedal 3 can be stuck in the "匚" shaped chute 71 of the pump plunger 7 by means of the crank pin 4;

The pedal pivot 5 is a bolt rod body, with a nut 51 at the front end, and an appropriate threaded section 52 in the middle, which is mainly used to pre-set a washer 53 to penetrate and lock a cylinder ring 54 and an outer ring sleeve 55 , and run through the support ribs 21, 22 and the pedal hole 33, and set the return spring 6 on the cylinder ring 54 in advance, and then use the pivot 5 to connect the outer ring sleeve 55 and the pedal lug 34 to make the return One end of the spring 6 is set on the outer ring sleeve 55, and the other end is fixed on the crank pin 4 (as shown in FIG. 2 ) by a curved hook to be positioned in combination;

The right side support rib 23 of the above-mentioned movable seat 2 is directly positioned through the right side of the frame plate 8 by a right pivot 51, so that the movable seat 2 can be in a state of being movably pivotally connected to the frame plates 8 on both sides, and Insert the right pivot 51 by a spring 9, with its one end against the top of the oil pressure base 10, and one end upwards and locked in the proper position of the movable seat 2, so as to provide the required recovery elastic force when the movable seat 2 rotates.

In the actual operation process, when the lifting plate of the jack is not in contact with the load, the operator can directly drive the pedal by hand or foot, so that the lifting plate can be quickly lifted to the top of the load in an extremely easy, labor-saving and fast way. Hold the contact, at this time, the movable seat remains in the original state, only the pedal provides the required holding action, and then, when the lifting plate has reached the initial holding contact with the heavy object, you can switch to a larger hand crank that saves effort However, when the movable seat is shaken by force, although the pedals are moved together for synchronous displacement, since the pressure on the movable seat is much greater than the torsional force of the pedals, the effect on the operating rod There is no inconvenient effect on shaking and applying force, and the expected effect of labor saving and rapidity can still be achieved.

Claims (2)

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:

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 is 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.

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.

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