CN2717922Y

CN2717922Y - Fast-lifting transportion jacks

Info

Publication number: CN2717922Y
Application number: CN 200420062530
Authority: CN
Inventors: 储兆生
Original assignee: TA TA TECHNOLOGY (NINGGUO) Co Ltd
Current assignee: TA TA TECHNOLOGY (NINGGUO) Co Ltd
Priority date: 2004-07-05
Filing date: 2004-07-05
Publication date: 2005-08-17
Anticipated expiration: 2014-07-05

Abstract

The utility model relates to a fast-lifting transportation jack, comprising an oil pump group, a base, a pedal, a pump, a piston, an oil return rod and an oil return pedal. The side surface of the oil pump group is connected with a pump seat whose side surface is drilled with two step holes, the base is connected with the side surface of the pump seat, and the two step holes are respectively communicated with the oil inlet and the oil outlet of the base. A steel ball C and an oil outlet compression spring are arranged in the step holes connected with the oil outlet, the upper end surface of the seat of the pump is provided with a threaded hole served for the installation of the pump, and one step hole drilled inside the seat of the pump is communicated with the oil inlet. A vertical hole is communicated with the oil outlet, and a steel ball B is arranged in the step hole; the pump is fixed inside the mounting hole of the pump seat, a retracting spring is arranged on the surface of the step of the pump, and the piston is arranged inside the pump. The utility model works with a single pump, the structure of the oil passage is relative simple, with the time-saving process, and the process efficiency is increased; further more, the utility model has the fast-lifting function, with no-load or light load, and the working efficiency of the transportation of the jack is raised.

Description

Raise soon and transport jack

Technical field

The utility model belongs to a kind of machine tool, is specifically related to a kind of jack.

Background technology

Existing coventional type is transported jack and is two pump work, and oil circuit is pair oil circuits, complex structure, and difficulty of processing increases, and when zero load was worked with heavy duty, lifting speed was the same, and when unloaded lifting, speed is relatively slow, and work efficiency is low.

Summary of the invention

Transport the jack structure complexity in order to solve existing coventional type, difficulty of processing is big, the slow problem of unloaded lifting, the jack that the utility model provides adopts single pump, single oil circuit work, structure is simple relatively, and can reach unloaded high raising speed, heavy duty at a slow speed, the steady purpose of lifting.

The technical solution of the utility model: a kind of raising soon transported jack, comprise oil pump group, base, pedal 1, pump, piston, oil return bar and oil return pedal, it is characterized in that oil pump group base side connects an Antlia, Antlia and links to each other with base and be drilled with two stepped holes on the side, communicate with base fuel feed hole and oil outlet respectively, with dress steel ball C and fuel-displaced compression spring in the oil outlet bonded assembly stepped hole, the Antlia upper surface is established pump screw is installed, the interior stepped hole that bores communicates with fuel feed hole, one straight hole communicates with oil outlet, establishes steel ball B in the stepped hole; Pump is fixed in the mounting hole of Antlia, establishes retracting spring on the pump step surface, dress piston in the pump.The downside of described Antlia is drilled with regulator hole and communicates with fuel feed hole and oil outlet, in establish steel ball D and pressure spring.Be drilled with stepped hole in the described piston, a tapped bore is bored in the upper end of piston, in put a steel ball, with holding screw locking, lower end side is bored a hole and is communicated with stepped hole, a steel ball A is arranged in the stepped hole, wear a spring pin down and block; On the cylindrical of piston lower end auxiliary piston is housed, the piston upper end is with spring cover, is pressed on the retracting spring.

The beneficial effects of the utility model: the utility model is single pump work, and oil channel structures is simple relatively, and processing saves time, and has improved the processing effect, and when zero load or underloading, has and raise function soon, has improved the work efficiency that transports jack.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is the utility model structural representation.

Fig. 2 is Figure 1A-A cutaway view.

Fig. 3 is Fig. 1 C-C cutaway view.

Fig. 4 is Fig. 3 B-B cutaway view.

The specific embodiment

Referring to Fig. 1,2,3,4, the utility model is made up of oil pump group, pump group and oil return apparatus, and the oil pump group comprises careful pipe 9, big core barrel 10, piston head 11 and outer tube 12.The pump group mainly comprises pump 5, piston 3, retracting spring 4 and pedal 10.Oil return apparatus comprises oil return bar 20, return spring 21 and oil return stretcher 19.

Oil pump group base 13 right flanks connect an Antlia 16, fix with bolt and locating dowel pin.Antlia and base join and are drilled with two stepped holes on the side and communicate with oil outlet 25 with base fuel feed hole 24 respectively, and two nose ends all are equipped with the sealing of O type ring, and adorn a steel ball 15, fuel-displaced compression spring 14 in the oil outlet bonded assembly stepped hole; The upper surface of Antlia has pump that screw is installed, the interior stepped hole that bores communicates with fuel feed hole 24, one straight hole communicates with oil outlet 25, be provided with a steel ball in the stepped hole, the downside of Antlia is drilled with a regulator hole and communicates with fuel feed hole 24, oil outlet 25, in be provided with steel ball D17, steel ball block piece, pressure spring 18 and regulator bolts.

Pump 5 one ends are fixed on the Antlia with screw thread, on the periphery with O type ring sealing, cover one pad on the pump step surface, on adorn a retracting spring 4, piston 3 is housed in the pump, be drilled with stepped hole in the piston, a tapped bore is bored in the upper end of piston, in put a steel ball, lock with holding screw, lower end side is bored a hole and is communicated with stepped hole, puts a steel ball A7 in the stepped hole, wears a spring pin down and blocks.On the cylindrical of piston lower end auxiliary piston 6 is housed, blocks down with a C type clasp; The upper end of piston puts spring cover 2, depresses retracting spring 4, is stuck on the piston with a C type clasp.

Principle of work:

1, foot pedal 1, promoting piston 3 drive auxiliary pistons 6 depresses together, pump inner chamber area dwindles suddenly, when unclamping pedal 1, compression spring 4 is with spring cover 2 jack-up, drive on the piston and move, the penstock internal volume increases, and pressure reduces suddenly, outer tube 12 interior hydraulic oil back down steel ball B8 and enter in the penstock, along with stepping on once more of pedal, piston is pressed into oil outlet with hydraulic oil, backs down steel ball C15, manage in 23 chambeies in hydraulic oil enters, along with the repeatable operation of pedal, in the tube chamber, promote whole big core barrel group and lift in hydraulic oil is entered by oil outlet gradually, when big core barrel 10 gave rise to limiting altitude, pressure oil entered the careful pipe group continuation of promotion act from the piston head endoporus and stretches.

2, when light condition or underload, piston area is the auxiliary piston area, and oil mass is bigger, and core barrel rises very fast; When heavy lift, oil pressure is bigger in the penstock, pressure oil enters by the slit of auxiliary piston and pump inwall, and hydraulic oil is full of the A chamber, during pistons work, the real work area is a piston area, because of its area reduces, core barrel lifting speed slows down, and this has just reached unloaded high raising speed, heavy duty at a slow speed, the steady purpose of lifting.

3, when load surpasses rated load, push up not open steel ball C15, when pressure surpasses the pressure of setting, back down steel ball D17, pressure oil is got back in the outer lumen, reaches the purpose of high voltage protective.

4, unloading oil return, foot-operated oil return stretcher 19, pressure oil backs down steel ball E22, in fuel return hole enters outer lumen, core barrel unloading retraction.

Claims

1, a kind of raising soon transported jack, comprise the oil pump group, base (13), pedal (1), pump (5), piston (3), oil return bar (26) and oil return pedal (19), it is characterized in that oil pump group base (13) side connects an Antlia (16), Antlia links to each other with base (13) and is drilled with two stepped holes on the side, communicate with base fuel feed hole (24) and oil outlet (25) respectively, with dress steel ball C (15) and fuel-displaced compression spring (14) in the oil outlet bonded assembly stepped hole, the Antlia upper surface is established pump screw is installed, the interior stepped hole that bores communicates with fuel feed hole, one straight hole communicates with oil outlet, establishes steel ball B (8) in the stepped hole; Pump (5) is fixed in the mounting hole of Antlia, establishes retracting spring (4) on pump (5) step surface, dress piston (3) in the pump.

2, according to claim 1 raising soon transported jin top, and the downside that it is characterized in that described Antlia is drilled with regulator hole and communicates with fuel feed hole (24) and oil outlet (25), in establish steel ball D (17) and pressure spring (18).

3, according to claim 1 and 2 raising soon transported the jin top, it is characterized in that being drilled with stepped hole in the described piston (3), a tapped bore is bored in the upper end of piston, in put a steel ball, lock with holding screw, lower end side is bored a hole and is communicated with stepped hole, a steel ball A (7) is arranged in the stepped hole, wear a spring pin down and block; On the cylindrical of piston (3) lower end auxiliary piston (6) is housed, piston (3) upper end is with spring cover (2), is pressed on the retracting spring (4).