CN206600325U - A kind of hydraulic jack of built-in circulating oil path - Google Patents

Abstract

The utility model discloses a kind of hydraulic jack of built-in circulating oil path, it includes：One stator bore component and one it is movably arranged on movable cylinder assembly in the stator bore component inner chamber；The stator bore component includes a stator bore and one and is set in parallel in mesotropic piston rod in the stator bore, and the piston rod and stator bore are connected with flange in bottom and form the toroidal cavity of a bottom lock between the inwall of the stator bore and the outer wall of the piston rod；The movable cylinder assembly from top insert the toroidal cavity in and can up and down piston movement；The first oil circuit and the second oil circuit vertically is arranged side by side in the body of rod of piston rod, the first oil circuit upper end cross break simultaneously passes through the top surface of the side wall of piston rod, second oil circuit vertically through piston rod.First oil circuit built in the utility model and the second oil circuit, make hydraulic oil internally circulate, and can be prevented effectively from external impact damage oil pipe, cause hydraulic jack can not fuel feeding, dependable performance stabilization.

Description

A kind of hydraulic jack of built-in circulating oil path

Technical field

The utility model is related to a kind of oil cylinder technology, and in particular to a kind of hydraulic jack of built-in circulating oil path.

Background technology

Hydraulic jack is that hydraulic energy is changed into mechanical energy, the hydraulic actuator of straight reciprocating motion can be done.It is tied Structure is simple, reliable operation.Realized with it during reciprocating motion, deceleration device can be removed from, and without drive gap, motion is flat Surely, therefore in various mechanical hydraulic systems it is used widely.

Common hydraulic jack mainly includes cylinder barrel and piston component, and the part for having piston rod of cylinder barrel internal cavity is to have Bar inner chamber, the part without piston rod of cylinder barrel internal cavity be without bar inner chamber, by outside oil circuit successively have bar inner chamber and Without fuel feeding in bar inner chamber and drain the oil and can just promote piston rod linear reciprocating motion.

The hydraulic jack applied in most of field to hydraulic jack fuel feeding and is drained the oil all by the way of outside oil circuit, The hydraulic jack principle of this outside oil circuit is simple, easily realizes, production cost is relatively low, but oil circuit is arranged on cylinder body It is outside that oil pipe is easily damaged due to collision, and then cause hydraulic jack can not fuel feeding, the hydraulic jack of this outside fuel feeding Energy and reliability are relatively poor.

Utility model content

The purpose of this utility model is to overcome shortcoming and deficiency of the prior art that there is provided a kind of built-in circulating oil path The preferable hydraulic jack of stability and reliability.

The utility model is achieved through the following technical solutions：A kind of hydraulic jack of built-in circulating oil path, including：Gu Determine cylinder assembly and can in the stator bore component inner chamber piston movement movable cylinder assembly；The stator bore group Part, including stator bore and it is arranged in an axially parallel mode mesotropic piston rod, the stator bore and work in stator bore along it Stopper rod bottom is connected with flange, and the piston rod top sets piston head, the piston rod greater diameter than diameter of piston rod The first oil circuit and the second oil circuit is arranged side by side along its axial direction in the body of rod, first oil circuit is connected with the second oil circuit bottom, first The top of oil circuit is pressing close to the cross break of piston head bottom end and is running through the body of rod of piston rod, the second oil circuit top to run through the work Chock plug and the inner chamber for being communicated to the movable cylinder assembly；The movable cylinder assembly, it is inserted from the top of stator bore component Enter the inner chamber of stator bore component and entangle the piston head and piston rod, the movable cylinder assembly includes movable cylinder barrel and set The interior oil cut-off plug in movable cylinder barrel bottom is put, the movable cylinder barrel entangles the piston head, the interior oil cut-off plug sleeve residence State piston rod.

Further, the bottom of the piston rod connects and sets two liquid inside a bidirectional hydraulic lock, the bidirectional hydraulic lock Pressure lock hydraulic fluid port is respectively communicated with the bottom of the first oil circuit and the second oil circuit.

Further, the piston rod upper end is provided with first hydraulic fluid port for extending transversely through side wall, and first hydraulic fluid port is pressed close to The piston head bottom surface and connected with the first oil circuit top；First oil circuit is connected by the first hydraulic fluid port from the side wall of piston rod To outside the body of rod of piston rod；Second oil circuit is communicated to outside the body of rod of piston rod by the second hydraulic fluid port from the top surface of piston rod.

Further, a tack silencer, the tack silencer connection are set on the stator bore bottom end side wall The inner chamber of stator bore.

Further, the piston head is the movable cylinder below the separation of the bore seal of the movable cylinder assembly, piston head The inner chamber of cartridge module is that the inner chamber for having movable cylinder assembly more than bar inner chamber, piston head is without bar inner chamber, first oil circuit Bar inner chamber, the second oil circuit are communicated with through the first hydraulic fluid port to connect without bar inner chamber through the second hydraulic fluid port.

Further, the top of the movable cylinder barrel connects a universal connecting components.

Further, piston seal component is arranged with the piston head, the piston seal component includes the O being arranged successively Shape circle, back-up ring, Glais ring and general plug envelope；The interior oil cut-off is arranged with interior oil seal component, the interior oil seal component beyond the Great Wall Including the dust ring being arranged successively, bar sealing U-shaped circle, bar sealing, support ring and O-ring.

Further, the stator bore top is arranged with a closure assemblies, and the closure assemblies are included from bottom to up successively Support set, spacer, dust ring and the gland of setting；Through type pressure injection oil is additionally provided with the stator bore tip side wall Cup, the through type forced filling oil cup crosses the barrel of the gland and stator bore.

Further, the hydraulic jack appearance mirror polish of the built-in circulating oil path and hard chrome is coated with, the thickness of coating of hard chrome is big In 25um.

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

First oil circuit built in the hydraulic jack and the second oil circuit, by bidirectional hydraulic lock control internal oil passages, make hydraulic oil In oil cylinder inner loop, external impact damage oil pipe can be prevented effectively from, causes hydraulic jack can not fuel feeding；Multilayer piston seal group Part coordinates tight, ne-leakage oil；Hydraulic jack polishes and is coated with the hard chrome of wear resistant corrosion resistant, can drenching with rain, it is high temperature, low temperature, wet Steady operation under the environment such as heat, solar radiation, sand dust, salt fog, mould, dependable performance is stable.

It is of the present utility model preferably below with reference to brief description of the drawings elaboration in order to be able to apparent understanding the utility model Embodiment.

Brief description of the drawings

Fig. 1 is the structural representation of the utility model hydraulic jack.

Fig. 2 is the cross section structure schematic diagram of the utility model hydraulic jack.

Fig. 3 is the enlarged drawing of part A in Fig. 2.

Fig. 4 is that oil circuit moves towards schematic diagram when movable cylinder assembly stretches out in Fig. 2.

Fig. 5 is the enlarged drawing of Local C in Fig. 4.

Fig. 6 is the enlarged drawing of part D in Fig. 4.

Fig. 7 is that oil circuit moves towards schematic diagram when movable cylinder assembly is retracted in Fig. 2.

Fig. 8 is Fig. 7 parts E enlarged drawing.

Embodiment

Please refer to Fig. 1 to Fig. 8, Fig. 1 is the structural representation of the utility model hydraulic jack, and Fig. 2 is that this practicality is new The cross section structure schematic diagram of type hydraulic jack, Fig. 3 is the enlarged drawing of part A in Fig. 2, and Fig. 4 is movable cylinder assembly stretching in Fig. 2 When oil circuit move towards schematic diagram, Fig. 5 is the enlarged drawing of Local C in Fig. 4, and Fig. 6 is the enlarged drawing of part D in Fig. 4, and Fig. 7 is living in Fig. 2 Oil circuit moves towards schematic diagram when moveable cylinder component is retracted, and Fig. 8 is Fig. 7 parts E enlarged drawing.

See Fig. 1, a kind of hydraulic jack 10 of built-in circulating oil path of the present utility model, including a stator bore component 20 and And one can in the inner chamber of stator bore component 20 piston movement movable cylinder assembly 30.The outer surface of hydraulic jack 10 Polish and be coated with hard chrome, the thickness of coating of hard chrome is more than 25um.

Fig. 2 is seen to Fig. 3, and the stator bore component 20 is arranged in an axially parallel mode in institute including a stator bore 21 and one along it Mesotropic piston rod 22 in stator bore 21 is stated, the piston rod 22 is connected with stator bore 21 in bottom with flange, The movable cylinder assembly 30 inserts the inner chamber of the stator bore 21 from the top of the stator bore 21 and entangles the work Stopper rod 22.

The top of stator bore 21 is arranged with a closure assemblies 21a, and the closure assemblies 21a is included from bottom to up successively Support set 21a-1, spacer 21a-2, dust ring 21a-3 and the gland 21a-4 of setting, gland 21a-4 are by the closure assemblies 21a Compress and be fixed in the upper end inner chamber of stator bore 21.A through type pressure injection is additionally provided with the tip side wall of stator bore 21 Lubricating cup 21b, through type forced filling oil cup 21b crosses the barrel of the gland 21a-4 and stator bore 21, for described solid Determine the inner chamber injection lubricant of cylinder barrel 21.

Tack silencer a 21c, the tack silencer 21c is set to cross fixation in the bottom sidewall of stator bore 21 The side wall of cylinder barrel 21 connects the inner chamber of stator bore 21 so that the inner chamber of stator bore 21 communicates with outer gas stream and reduces pressure The flow noise of contracting air-flow.

A piston head 22a is fixed with bolt, is axially set side by side along it in the body of rod of piston rod 22 in the top of piston rod 22 Put the first oil circuit 22b and the second oil circuit 22c, the upper end of the piston rod 22 and be provided with a first hydraulic fluid port 22d for extending transversely through side wall, The first hydraulic fluid port 22d presses close to the piston head 22a bottom surfaces and connected with the first oil circuit 22b tops；The top of the piston rod 22 The second hydraulic fluid port 22e, the second hydraulic fluid port 22e is opened up on face to connect with the second oil circuit 22c tops.The first oil circuit 22b passes through First hydraulic fluid port 22d is communicated to outside the body of rod of piston rod 22 from the side wall of piston rod 22；The second oil circuit 22c passes through the second hydraulic fluid port 22e is communicated to outside the body of rod of piston rod 22 from the top surface of piston rod 22.

The bottom of the piston rod 22 connects a bidirectional hydraulic lock 22g, is arranged on two inside the bidirectional hydraulic lock 22g Bottom of the individual hydraulic lock hydraulic fluid port respectively with the first oil circuit 22b and the second oil circuit 22c is connected.

The piston head 22a diameters, which are more than on the diameter of piston rod 22, piston head 22a, is arranged a piston seal component 22f, The piston seal component 22f include be arranged successively O-ring 22f-1, back-up ring 22f-2, Glais ring 22f-3 and it is general plug envelope 22f-4。

The piston head 22a separates the bore seal of the movable cylinder assembly 30, the movable cylinder of piston head 22a lower ends The inner chamber of cartridge module 30 to there is a bar inner chamber 31b, the inner chamber of the movable cylinder assembly 30 of piston head 22a upper ends be without bar inner chamber 31a, The first oil circuit 22b is communicated with bar inner chamber 31b, the second oil circuit 22c through the first hydraulic fluid port 22d and connected through the second hydraulic fluid port 22e without bar Inner chamber 31a.

The movable cylinder assembly 30 include a movable cylinder barrel 31 and one be fixed on the interior oil of the movable bottom of cylinder barrel 31 every Disconnected plug 32.The matching of movable cylinder barrel 31 entangles piston head 22a, the interior matching of oil cut-off plug 32 and entangles the piston rod 22, The interior oil cut-off plug 32 has bar inner chamber 31b and the bore seal of the stator bore 21 to isolate by described, in order to avoid have bar inner chamber Hydraulic oil in 31b enters the inner chamber of stator bore 21.The top of the movable cylinder barrel 31 connects a universal connecting components 33, described Hydraulic jack 10 is connected by universal connecting components 33 with external impetus system.

Interior oil seal component is arranged with the interior oil cut-off plug 32, the interior oil seal component is dust-proof including what is be arranged successively Circle, bar sealing U-shaped circle, bar sealing, support ring and O-ring etc..

See Fig. 4 to Fig. 8, hydraulic jack 10 of the present utility model operationally, the first internal oil circuit 22b and the second oil circuit Hydraulic oil in 22c, which is flowed to, is：

Movable cylinder assembly 30 from stator bore 21 stretch out when, outer gas stream through tack silencer 21c flow into stator bore 21 inner chambers.Hydraulic oil flows through the first hydraulic fluid port 22d, the first oil circuit 22b, bidirectional hydraulic lock 22g, from having bar inner chamber 31b successively Two oil circuit 22c, the second hydraulic fluid port 22e, eventually enter into no bar inner chamber 31a.

When movable cylinder assembly 30 is retracted into stator bore 21, internal gas flow flows out stationary cylinder through tack silencer 21c 21 inner chambers of cylinder.Hydraulic oil flowed through successively from without bar inner chamber 31a the second hydraulic fluid port 22e, the second oil circuit 22c, bidirectional hydraulic lock 22g, First oil circuit 22b, the first hydraulic fluid port 22d, have eventually entered into bar inner chamber 31b.By the closure lockable for controlling bidirectional hydraulic lock 22g Hydraulic jack 10, allows hydraulic jack 10 to be in packing state.

The utility model is not limited to above-mentioned embodiment, if do not taken off to various changes or deformation of the present utility model From spirit and scope of the present utility model, if these are changed and deformation belongs to claim of the present utility model and equivalent technologies Within the scope of, then the utility model is also intended to comprising these changes and deformed.

Claims (10)

1. a kind of hydraulic jack of built-in circulating oil path, it is characterised in that including：Stator bore component and can be in the stationary cylinder The movable cylinder assembly of piston movement in cartridge module inner chamber；

The stator bore component, including stator bore and it is arranged in an axially parallel mode the mesotropic piston in stator bore along it Bar, the stator bore and piston rod bottom are connected, and the piston rod top is set greater diameter than diameter of piston rod The first oil circuit and the second oil circuit, first oil circuit and the second oil circuit is arranged side by side along its axial direction in piston head, piston club shaft Bottom connection, the first oil circuit top press close to the cross break of piston head bottom end and through piston rod the body of rod, second oil circuit Top runs through the piston head and is communicated to the inner chamber of the movable cylinder assembly；

The movable cylinder assembly, it inserts the inner chamber of stator bore component from the top of stator bore component and entangles the work Chock plug and piston rod, the movable cylinder assembly include movable cylinder barrel and are arranged on the interior oil cut-off plug of movable cylinder barrel bottom, institute State movable cylinder barrel and entangle the piston head, the interior oil cut-off plug sleeve residence and state piston rod.

2. a kind of hydraulic jack of built-in circulating oil path as claimed in claim 1, it is characterised in that：The bottom of the piston rod Connect and set two hydraulic lock hydraulic fluid ports to be respectively communicated with the first oil circuit and the second oil inside a bidirectional hydraulic lock, the bidirectional hydraulic lock The bottom on road.

3. a kind of hydraulic jack of built-in circulating oil path as claimed in claim 1, it is characterised in that：The piston rod upper end is set First hydraulic fluid port for extending transversely through side wall is equipped with, first hydraulic fluid port is pressed close to the piston head bottom surface and connected with the first oil circuit top It is logical；First oil circuit is communicated to outside the body of rod of piston rod by the first hydraulic fluid port from the side wall of piston rod；Second oil circuit leads to The second hydraulic fluid port is crossed to be communicated to outside the body of rod of piston rod from the top surface of piston rod.

4. a kind of hydraulic jack of built-in circulating oil path as claimed in claim 1, it is characterised in that：The stator bore bottom One tack silencer is set on the wall of side, and the tack silencer connects the inner chamber of stator bore.

5. the hydraulic jack of circulating oil path built in a kind of as described in claim 1, it is characterised in that：The piston head is institute State the bore seal separation of movable cylinder barrel, the inner chamber of movable cylinder barrel below piston head is to have work more than bar inner chamber, piston head The inner chamber of moveable cylinder component is that first oil circuit is communicated with bar inner chamber, the second oil circuit through second through the first hydraulic fluid port without bar inner chamber Hydraulic fluid port is connected without bar inner chamber.

6. the hydraulic jack of circulating oil path built in a kind of as any one of claim 2 to 5, it is characterised in that：Institute The top for stating movable cylinder barrel connects a universal connecting components.

7. a kind of hydraulic jack of built-in circulating oil path as claimed in claim 6, it is characterised in that：It is arranged on the piston head There is piston seal component, the piston seal component includes O-ring, back-up ring, Glais ring and the general plug envelope being arranged successively；In described Oil cut-off is arranged with interior oil seal component beyond the Great Wall, and the interior oil seal component includes dust ring, the bar sealing U-shaped being arranged successively Circle, bar sealing, support ring and O-ring.

8. a kind of hydraulic jack of built-in circulating oil path as claimed in claim 7, it is characterised in that：The stator bore top A closure assemblies are arranged with, the closure assemblies include support set, spacer, dust ring and the gland set gradually from bottom to up； A through type forced filling oil cup is additionally provided with the stator bore tip side wall, the through type forced filling oil cup cross the gland and The barrel of stator bore.

9. a kind of hydraulic jack of built-in circulating oil path as claimed in claim 8, it is characterised in that：The stator bore and work Stopper rod is connected in bottom with flange.

10. a kind of hydraulic jack of built-in circulating oil path as claimed in claim 9, it is characterised in that：The built-in circulating oil path Hydraulic jack appearance mirror polish and be coated with hard chrome, the thickness of coating of hard chrome is more than 25um.