CN203889993U

CN203889993U - Vertical hydraulic jack

Info

Publication number: CN203889993U
Application number: CN201420336002.3U
Authority: CN
Inventors: 熊金山
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-06-23
Filing date: 2014-06-23
Publication date: 2014-10-22
Anticipated expiration: 2024-06-23

Abstract

The utility model discloses a vertical hydraulic jack. The vertical hydraulic jack solves the problem that a piston rod of a hydraulic jack in the prior art rusts easily and has potential safety hazards. The jack comprises a case, a base, a first oil cylinder, an oil storage cavity, a first piston rod, an adjusting screw rod, an oil return valve rod, a second oil cylinder, a second piston rod and a handle installation part. The oil return valve rod is arranged on the base and communicated with the oil storage cavity through an oil way. The second oil cylinder is arranged on the base, located on one side of the first oil cylinder and communicated with the first oil cylinder and the oil storage cavity. The second piston rod is arranged in the second oil cylinder. The handle installation part is connected with the top of the second piston rod. The upper portion of the case is inclined towards the axis direction of the case, so that the section of the case is of a trapezoidal structure. The first piston rod and the second piston rod are provided with chrome coatings. The first oil cylinder and the bottom edge of the case are connected with the base into an integrated structure in a welding and fastening mode. A magnet used for attracting iron filing particles contained in hydraulic oil is arranged in the oil storage cavity. The vertical hydraulic jack is simple in structure, convenient to realize, low in cost, convenient to maintain and high in safety factor.

Description

A kind of hoisting jack

Technical field

The utility model relates to a kind of jack, specifically, relates to a kind of hoisting jack.

Background technology

Oil jack is conventional a kind of lifting gear in producing, and its simple structure, easy to operate, can be used in the repairing of multiple occasion.Current jack defect is on the market as follows: between (1) jack the first oil cylinder and base, be that silk thread mouth twists into, it not slitless connection, when in use the first oil cylinder is subject to the pressure of hydraulic oil to promote piston rod load simultaneously, hydraulic oil is being subject to the support of base simultaneously also the cylinder sleeve Si Yalasong being screwed on base, cause leakage of oil, bias, inclination, sinking and can not beat, safety is brought to very big hidden danger, is the problem of having a headache most in industry; (2) in oil pressure upright jack the first oil cylinder steel bushing, fuel feed hole is surely to follow closely card by plastics to press, and plastics are surely followed closely and in high-frequency oil shock, easily ruptured and come off; (3) piston rod of oil jack gets rusty easily, scratches after meeting water, damage seal ring; (4) hydraulic oil, back and forth with the circulation back and forth in oil duct of the iron filings grains of sand, causes the wearing and tearing of steel bushing and oil sealing and stuck steel ball to cause hydraulic oil backflow, and unloaded lifting back and forth in use can not jacking; (5) shell and base are to compress and form by fastening nut, and very heavy handle is fixed on again on shell, and the handle in use on outer shell is put forward 37 jin very heavy and moved around, and adds the variation of time and temperature, easily becomes flexible, and causes leakage of oil; (6) the plastic flat pad oil sealing of the direct use of mat under the jam nut of oil pressure upright jack, plastic flat pad is too hard, there is no forbearing and conciliatory property, and soft and difficult fastening very heavy shell, adding slightly have a bit looseningly on shell, will cause leakage of oil; (7) housing diameter size phase formula up and down, is subject to the restriction of top weight body in the rough place of jacking, can not play again the convenience of turnover before and after using in the time of jacking car chassis; (8) on label, there is no Quick Response Code, be difficult to fully understand the performance of product.

Utility model content

The purpose of this utility model is to overcome above-mentioned defect, provide a kind of simple in structure, realize hoisting jack easily.

To achieve these goals, the utility model has adopted technical scheme as follows:

A kind of hoisting jack, comprise the shell with nut cap, base, be vertically set on base and there is fuel feed hole and the first oil cylinder of oil outlet, be formed at the shoe cream room between shell and the first oil cylinder, be arranged on the first in-oil cylinder first piston bar, be arranged on the adjustment screw mandrel on first piston bar top, be arranged on the oil return valve rod being communicated with shoe cream room on base and by oil circuit, be arranged on the second oil cylinder that is positioned at the first oil cylinder one side and is communicated with the first oil cylinder and shoe cream room on base, be arranged on second in-oil cylinder the second piston rod, and the handle fabricated section being connected with the second piston rod part, the edge of described nut cap offers around the groove of one circle and at this groove and is embedded in rubber seal, described first piston bar and the second piston rod surface are provided with plating network layer, the first oil cylinder is connected on base by full weld, the bottom margin of shell is fastenedly connected and is structure as a whole by welding and base, in described shoe cream room, be provided with the magnet of cutting particle for adsorption liquid force feed institute iron content.The utility model has also comprised the oil duct that is communicated with the first oil cylinder, the second oil cylinder and shoe cream room, it is prior art, therefore do not repeat, based on said structure, principle of work of the present utility model is as follows: the second oil cylinder is extracted hydraulic oil out by the first oil duct in shoe cream room, then by the second oil duct, hydraulic oil is pressed in the first oil cylinder; When release, the first in-oil cylinder hydraulic oil is back to shoe cream room by the 3rd oil duct (oil return valve rod) again.

Further, on described the first in-oil cylinder fuel feed hole, be provided with the steel ball of pressing by steel ring card.

Further, between described base and shell, be welded as full weld.

Further, the top of the adjustment screw mandrel on described first piston bar is also provided with plum blossom striped.

As preferably, described shell is identical with base material, makes by wrought iron.

Described shell upper tilts to make its cross section be trapezium structure to its axis direction.

In order better to realize the utility model, on described shell, be also provided with Quick Response Code.

Compared with prior art, the beneficial effects of the utility model are:

(1) the utility model is not only simple in structure, with low cost, and realizes conveniently.

(2) in the utility model, the first oil cylinder and shell are all adopted to the full weld structure that is welded as a whole with base, after the two formation is integrated, stressed even, stabilization be can play, the oil cylinder of existing oil jack and the problem that base causes leakage of oil to be sunk because of thread looseness in the situation that of high pressure effectively solved; In addition, when maintenance, no longer look for reason in the place of welding, time-consuming detachable maintaining before having changed, has improved overhaul efficiency, has saved user cost spending.

(3) network is all plated on the surface of the utility model first piston bar and the second piston rod, has increased the superficial hardness of piston rod, is difficult for wounded, smooth beautiful, reduce seal ring and piston rod badly rubs, strengthened frequency of utilization and life-span, and met water and be difficult for getting rusty, corroding.

(4) the utility model housing is identical with base material, makes, for the utility model provides the basis of full weld by wrought iron.

(5) the utility model is provided with magnet in shoe cream room, its effectively in adsorption liquid force feed institute's iron content cut particle, both can reduce the wearing and tearing of steel bushing and oil sealing, can prevent that again steel ball from cutting and blocking the hydraulic oil causing and reflux because of iron.

(6) the utility model is provided with rubber seal at the edge of nut cap, and it is the gap that is connected with outer casing underpart for sealing nut lid, guarantees sealing effectiveness.

(7) in the utility model, on the first in-oil cylinder fuel feed hole, be provided with the steel ball of pressing by steel ring card, steel ring card is pressed in steel ball middle firmly, can bear the high-frequency impact back and forth of steel ball and steel ring, the convenience of repacking servo-unit is provided to user, on the one hand, change the technical scheme that prior art adopts the steady nail of plastics, no longer surely followed closely fracture in high-frequency impact, come off because of plastics, improved very big convenience for user uses.

Brief description of the drawings

Fig. 1 is generalized section of the present utility model.

Fig. 2 is external structure schematic diagram of the present utility model.

Fig. 3 is the partial schematic diagram of the first oil cylinder in the utility model.

Fig. 4 is the partial schematic diagram of nut cap in the utility model.

Reference numeral title corresponding in accompanying drawing is as follows: 1-the second piston rod, 2-base, 3-the first oil cylinder, 4-first piston bar, 5-the second oil cylinder, 6-handle fabricated section, 7-oil return valve rod, 8-adjusts screw mandrel, 9-shoe cream room, 10-shell, 11-nut cap, 12-rubber seal.

Detailed description of the invention

Below in conjunction with accompanying drawing, the utility model is described in further detail.Embodiment of the present utility model includes but not limited to the following example.

Embodiment

As shown in Figures 1 to 4, the present embodiment provides a kind of hoisting jack, and it mainly comprises base 2, has the shell 10 of nut cap 11, the first oil cylinder 3, first piston bar 4, shoe cream room 9, adjust the parts such as screw mandrel 8, oil return valve rod 7, the second oil cylinder 5, the second piston rod 1 and handle fabricated section 6.Wherein, base selects wrought iron to make, and when use, tough allowing property is strong, and resistance to compression, antidetonation, cracking resistance and smooth surface are used safety more reliable, have overcome stressed slight crack and the damaged problem of being prone to of existing base.

The fastening welding one-shot forming of the first oil cylinder and base in the present embodiment, shell is reached same material with base, so that assemble welding to be provided, preferably, the first oil cylinder and base full weld, after the two formation is integrated, changed the in the situation that of high pressure no longer to sink because thread looseness causes leakage of oil, stressedly evenly can play stabilization, the outside weldings of shell has handle; By above-mentioned design, during use, overcome because of access times and too much carried loose shell, guarantee lifting altitude and outward appearance between used life.Further, the top of shell tilts to make its cross section be trapezium structure to its axis direction, and the advantage of this design is, is in use no longer subject to the restriction of top weight body, can play again the convenience of turnover before and after using.Shell is provided with fuel feed hole, and it takes metal screw and seal ring is fastening forms, and in use no longer causes and wounds and come off, and exhaust is refueled more convenient.

For the ease of identification, false proof and user's understanding, the present embodiment is provided with Quick Response Code on shell, is convenient to user and sweeps Quick Response Code with smart mobile phone, just can recognize fast performance and the past-sale service of product, has stopped counterfeit merchandise.Shell has nut cap 11, and it is connected on shell by screw thread rotation, is provided with through hole in the middle of nut cap, stretches out for first piston bar and adjustment screw mandrel.Whether the connection of nut cap and shell seals the sealing property that affects hydraulic oil in shoe cream room, the present embodiment offers around the groove of one circle and at this groove and is embedded in rubber seal 12 at the edge of nut cap, not only can improve the connection sealing of nut cap and shell by rubber seal, and, can effectively having overcome because of the shell stressed problem that causes sealing between shell and nut cap variation or inefficacy repeatedly by deformation behavior of rubber seal.

The first oil cylinder is positioned at shell and is fastenedly connected with base, cavity between itself and shell forms shoe cream room 9, the present embodiment is provided with magnet in shoe cream room 9, by magnet effectively in adsorption liquid force feed institute's iron content cut particle, both can reduce the wearing and tearing of steel bushing and oil sealing, can prevent again that steel ball from cutting and blocking the hydraulic oil that causes and reflux because of iron.

The first oil cylinder mates with first piston bar, by the lifting of oil pressure control plunger bar, the top of first piston bar is installed and is adjusted screw mandrel, the top of the adjustment screw mandrel on first piston bar with contacted by top weight, as preferably, the present embodiment is provided with anti-skidding plum blossom striped adjusting on the top of screw mandrel, to increase adjustment screw mandrel on first piston bar and by the friction force between the weight of top.

The second oil cylinder and the second piston rod coupling, it belongs to operating unit, for be pressed into the first oil cylinder oil suction in shoe cream room, the second oil cylinder is communicated with the first oil cylinder and shoe cream room, be connected with handle fabricated section 6 at the top of the second piston rod, the tubular structure that its structure is opening, when use, handle bar is inserted in handle fabricated section, then drives the second piston rod to make piston movement with respect to the second oil cylinder by handle bar.Oil duct in the present embodiment between shoe cream room, the first oil cylinder, the second oil cylinder is same as the prior art, therefore do not repeat.

In the present embodiment, network is all plated on first piston bar 4 and the second piston rod 1 surface, and its advantage is as follows: run into rainwater and be difficult for getting rusty; Increase piston rod surface hardness, and be difficult for wounded, smooth beautiful; Reduce the friction of seal ring and piston rod, strengthened frequency of utilization and the life-span of piston rod.

Unlike the prior art, the present embodiment adopts the large steel ring card of 3mm, be stuck in mouthful the inside that contains of the first oil cylinder, be pressed in firmly steel ball middle, can bear the high-frequency impact back and forth of steel ball and steel ring, the convenience of repacking servo-unit is provided to user, on the one hand, change the technical scheme that prior art adopts the steady nail of plastics, no longer surely followed closely fracture in high-frequency impact, come off because of plastics, improved very big convenience for user uses.

According to above-described embodiment, just can realize well the utility model.What deserves to be explained is; under prerequisite based on above-mentioned principle of design; for solving same technical matters; even if some that make on architecture basics disclosed in the utility model are without substantial change or polishing; the essence of the technical scheme adopting is still the same with the utility model, therefore it also should be in protection domain of the present utility model.

Claims

1. a hoisting jack, it is characterized in that, comprise the there is nut cap shell (10) of (11), base (2), be vertically set on base (2) and go up and have first oil cylinder (3) of fuel feed hole and oil outlet, be formed at the shoe cream room (9) between shell (10) and the first oil cylinder (3), be arranged on the first piston bar (4) in the first oil cylinder (3), be arranged on the adjustment screw mandrel (8) on first piston bar (4) top, be arranged on the oil return valve rod (7) that base (2) is upper and be communicated with shoe cream room (9) by oil circuit, be arranged on the second oil cylinder (5) that is positioned at the first oil cylinder (3) one sides and is communicated with the first oil cylinder (3) and shoe cream room (9) on base (2), be arranged on the second piston rod (1) in the second oil cylinder (5), the handle fabricated section (6) being connected with the second piston rod (1) top, and be arranged at the oil duct in base, the edge of described nut cap (11) offers around the groove of one circle and at this groove and is embedded in rubber seal (12), described first piston bar (4) and the second piston rod (1) surface are provided with plating network layer, the first oil cylinder is connected on base by full weld, the bottom margin of shell (10) is fastenedly connected and is structure as a whole by welding and base (2), in described shoe cream room (9), be provided with the magnet of cutting particle for adsorption liquid force feed institute iron content.

2. a kind of hoisting jack according to claim 1, is characterized in that, on the fuel feed hole in described the first oil cylinder (3), is provided with the steel ball of pressing by steel ring card.

3. a kind of hoisting jack according to claim 2, is characterized in that, between described base (2) and shell (10), is welded as full weld.

4. a kind of hoisting jack according to claim 3, is characterized in that, is also provided with plum blossom striped at the top of the adjustment screw mandrel (8) on described first piston bar top.

5. a kind of hoisting jack according to claim 4, is characterized in that, described shell is identical with base material, makes by wrought iron.

6. according to a kind of hoisting jack described in claim 1 to 5 any one, it is characterized in that, described shell (10) top tilts to make its cross section be trapezium structure to its axis direction.

7. a kind of hoisting jack according to claim 6, is characterized in that, is also provided with Quick Response Code on described shell.