CN207158728U - A kind of low delay for level Four above door frame starts and leaks cushion cylinder in anti- - Google Patents
A kind of low delay for level Four above door frame starts and leaks cushion cylinder in anti- Download PDFInfo
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- CN207158728U CN207158728U CN201720733373.9U CN201720733373U CN207158728U CN 207158728 U CN207158728 U CN 207158728U CN 201720733373 U CN201720733373 U CN 201720733373U CN 207158728 U CN207158728 U CN 207158728U
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Abstract
Start the utility model discloses a kind of low delay for level Four above door frame and prevent interior leakage cushion cylinder, including piston-rod assembly, cylinder cap, cylinder barrel assembly.The piston-rod assembly center is provided with conveying oil duct and piston, and check valve is provided with the piston, and the cylinder barrel assembly is provided with cylinder bottom, is provided with commutation stop valve in the cylinder bottom, annular space is provided between the cylinder bottom and piston.During use, the conveying oil duct gives middle oil supply cylinder first, and allow middle cylinder to start in advance and drive the balladeur train on door frame to rise, when middle cylinder is up to upper end extreme position, the piston base oil pocket fuel feeding of left back cylinder is given by the commutation stop valve, cylinder rises simultaneously behind piston base oil pocket fuel feeding to cylinder behind the right side simultaneously, left back cylinder and the right side and the rising of jack-up door frame reaches preset height again.When the door frame falls after rise, the hydraulic oil of piston base produces buffering by annular space and fallen after rise, and the check valve 4 possesses the function that draining reduces back pressure in piston seal failure.
Description
Technical field
Fork truck designing technique is the utility model is related to, specifically, it is related to a kind of low prolonging for level Four above door frame
Shi Qidong and anti-interior leakage cushion cylinder.
Background technology
When some special industries require that forklift door frame lifting altitude is more than six meters at this stage, its door frame oneself height is less than
Container door is high, can carry out picking, and outlet carries out shelf magazine heap goods.In order to tackle this demand, just exploitation is more complete than three-level certainly
It is higher by door frame raising, more than the lower level Four of mast height full free gantry.
Because such a door frame needs higher lifting altitude, while the overall length of door frame at different levels needs to meet inlet requirement again.
So the locating distance for leaving oil cylinder on rear side of side (cylinder after hereinafter referred to as) for is extremely limited, it is meant that oil cylinder designs overall length and internal structure
Design space is limited.But the stability and comfortableness moved to it by the applicable occasion of door frame more than level Four require very high,
So oil cylinder must be equipped with declining pooling feature when designing, reduce and decline impact.Next requires raising process, middle cylinder (or it is preceding
Cylinder) raising switch in place after cylinder working when, can not have switching shock (easily causing door frame to be shaken).3rd, because level Four with
The influence of upper door frame movement relation, cause to connect middle cylinder oil circuit must behind side the piston rod design centre oil hole of cylinder it is real
It is existing.Finally to prevent interior leakage from causing oil cylinder to reach range, oil cylinder needs self anti-interior leakage function.
This just needs rear cylinder to have following technical characteristic：(1) possessing has the device for declining pooling feature；(2) possess low prolong
When startup function device；(3) piston rod is hollow structure；(4) possesses leakage device in anti-.
Utility model content
Main purpose of the present utility model is in view of the above-mentioned problems, providing a kind of low prolonging for level Four above door frame
Shi Qidong and anti-interior leakage cushion cylinder.
A kind of low delay for level Four above door frame starts and cushion cylinder is leaked in anti-, and forklift door frame is provided with left back
Cylinder 102 behind cylinder, middle cylinder 101 and the right side, this three oil cylinders are the parts for starting door frame raising and lowering, and the low delay starts and prevented
Interior leakage cushion cylinder is left back cylinder, including piston-rod assembly 1, cylinder cap 2, cylinder barrel assembly 3, described one end of cylinder barrel assembly 3 be provided with into
Hydraulic fluid port, other end installation cylinder cap 2, the piston-rod assembly 1 are arranged in cylinder barrel assembly 3, are stretched out and done work by the endoporus of cylinder cap 2.
The center of piston-rod assembly 1 is provided with conveying oil duct 7 and piston 13, and check valve 4 is provided with the piston 13, described
Cylinder barrel assembly 3 is provided with cylinder bottom 32, and commutation stop valve is provided with the cylinder bottom 32；Annular space is provided between the cylinder bottom 32 and piston 13
8。
In use, the conveying oil duct 7 gives the fuel feeding of middle cylinder 101 first, and allow middle cylinder 101 to start in advance and drive on door frame
Balladeur train rises, and when middle cylinder 101 is up to upper end extreme position, the bottom of piston 13 of left back cylinder is given by the commutation stop valve
Oil pocket fuel feeding, while rise simultaneously with cylinder 102 behind the right side and push up again to the piston base oil pocket fuel feeding of cylinder 102 behind the right side, left back cylinder
Play door frame rising and reach preset height.When the door frame falls after rise, the hydraulic oil of the bottom of piston 13 is produced by annular space 8 to be buffered back
Fall, the check valve 4 possesses the function that draining reduces back pressure in piston seal failure.
The technical scheme further limited is as follows：
The piston-rod assembly 1 includes connecting rod 11, outer joint steel pipe 12, piston 13, front connector 14, interior joint steel pipe 15
With rear joint 16；The front connector 14 and rear joint 16 are equipped with central through hole.Before the front end connection of the interior joint steel pipe 15
Joint 14, rear end connection rear joint 16, the front connector 14 are connected with the central oil passage hole rear end of connecting rod 11, the rear joint 16
It is connected with the front end in the central oil passage hole of piston 13, front end and the cylindrical connection in the rear end of connecting rod 11 of the outer joint steel pipe 12,
The rear end of the outer joint steel pipe 12 and the cylindrical connection in front end of piston 13.
The piston 13 is the two-stage step cylindrical structure of thick cylinder and thin cylinder composition, and center is prolonged on axial location,
And one-level circular hole 131 is provided with thick cylindrical end, two level circular hole 133 is provided with thin cylindrical end, the one-level circular hole 131 is justified with two level
Middle circular hole 132 is provided between hole 133.The thick cylinder is provided with the first annular groove 137 and the second annular groove 138.The thick cylinder
Be provided with check valve oilhole 134, the thin cylinder is cylindrical to be provided with oil groove 136, the oil groove 136 and check valve oilhole 134 it
Between be communicated with hole 135.
First annular groove 137 sealing ring support ring with together with provided with together with the second annular groove 138.
The cylinder barrel assembly 3 includes cylinder barrel 31 and cylinder bottom 32, and the cylinder barrel 31 is that endoporus passes through precision machined steel pipe, institute
State one end endoporus of cylinder barrel 31 and be provided with Internal Pipe Thread, said inner tube screw thread coordinates with the external pipe thread on cylinder cap 2.The cylinder bottom 32
Provided with the setting circle shaft shoulder 321, buffering cylinder 322, oil inlet 323, internal thread hole 324, lower oil duct 325, side oil duct 326, main oil
Road 327, the first mounting hole 328 and the second mounting hole 329.The other end of the setting circle shaft shoulder 321 and the cylinder barrel 31 coordinates
Connection, and welding groove is provided with junction is cylindrical, the buffering cylinder 322 and the setting circle shaft shoulder 321 are coaxially connected, described
Main oil gallery 327 is provided with buffering cylinder 322.The vertical direction of main oil gallery 327 is provided with oil inlet 323, the bottom of oil inlet 323
Provided with internal thread hole 324, oil duct 325 under the through connection of internal thread hole 324, the side oil duct of the lower oil duct 325 and side
326 through connections；The mounting hole 329 of first mounting hole 328 and second is on the end face of the side of oil inlet 323, for inciting somebody to action
Oil cylinder is arranged on door frame.
The commutation stop valve includes valve element 5 and valve seat 6.The valve element 5 is the cylinder that one end is provided with the conical surface, and center is set
There is central oil passage 51, the valve element 5 are cylindrical to be provided with annular groove 52, by connecting oil duct 53 between the central oil passage 51 and annular groove 52
Insertion.The valve element 5 is arranged in the lower oil duct 325.
The valve seat 6 is cylinder, and center is provided with centre bore 61, and the both sides of the centre bore 61 are provided with two techniques
Hole 63, the cylindrical of the valve seat 6 are provided with external screw thread 62, and valve seat 6 is screwed in into institute by the fabrication hole 63 using special spanner
State on internal thread hole 324.
One-level circular hole 131 on the cylindrical and piston 13 of the buffering cylinder 322 coordinates for gap, and the gap is matched somebody with somebody
Conjunction forms annular space 8.
The axial centre position of connecting rod 11 is provided with front oil duct 111, and the front end side of the connecting rod 11 is provided with fuel-displaced
Mouth 112, the oil-out 112 and the through connection of front oil duct 111, and hydraulic oil is transported in middle cylinder 101 by oil-out.
It is outer oil cavity between the cylinder barrel 31 and outer joint steel pipe 12, between the joint steel pipe 12 and interior joint steel pipe 15
For interior oil pocket, the outer oil cavity is with the interior oil pocket by the through connection of oil groove 136.
The conveying oil duct 7 is led to by the center of the front oil duct 111 in the connecting rod 11, front connector 14 and rear joint 16
Hole, the endoporus composition of interior joint steel pipe 15.
Advantageous effects of the present utility model are：
(1) decline and use gap throttling buffering, buffer structure is simple.
(2) have and aid in unidirectional oil circuit, reduce oil cylinder start-up study.
(3) piston embeds check valve, prevents interior leakage from improving service life.
(4) piston rod is nested with the logical oil of steel pipe, reduces the usage amount of hydraulic oil, reduces the weight of oil cylinder.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the utility model piston-rod assembly schematic diagram.
Fig. 3 is the utility model cylinder barrel assembly diagram.
Fig. 4 is the utility model piston schematic diagram.
Fig. 5 is the utility model cylinder bottom schematic diagram.
Fig. 6 is the utility model valve element schematic diagram.
Fig. 7 is the utility model valve seat schematic diagram.
Fig. 8 is the utility model use state diagram.
Sequence number in figure：Piston-rod assembly 1, connecting rod 11, front oil duct 111, oil-out 112, outer joint steel pipe 12, piston
13rd, one-level circular hole 131, middle circular hole 132, two level circular hole 133, check valve oilhole 134, intercommunicating pore 135, oil groove 136, first
Annular groove 137, the second annular groove 138, front connector 14, interior joint steel pipe 15, rear joint 16；Cylinder cap 2, cylinder barrel assembly 3, cylinder barrel 31, cylinder
Bottom 32, the setting circle shaft shoulder 321, buffering cylinder 322, oil inlet 323, internal thread hole 324, lower oil duct 325, side oil duct 326, main oil
Road 327, the first mounting hole 328, the second mounting hole 329, check valve 4, valve element 5, central oil passage 51, annular groove 52, connection oil duct 53,
Cylinder 102 behind valve seat 6, centre bore 61, external screw thread 62, fabrication hole 63, conveying oil duct 7, annular space 8, door frame 9, middle cylinder 101, the right side.
Embodiment
Below in conjunction with the accompanying drawings, by embodiment, the utility model is further described.
Embodiment
Referring to Fig. 1, a kind of low delay for level Four above door frame starts and anti-interior leakage cushion cylinder, including piston rod is total
Into 1, cylinder cap 2, cylinder barrel assembly 3, check valve 4 and commutation stop valve.Described one end of cylinder barrel assembly 3 is provided with oil inlet, other end peace
Cylinder cap 2 is filled, the piston-rod assembly 1 is arranged in cylinder barrel assembly 3, is stretched out and is done work by the endoporus of cylinder cap 2.
Referring to Fig. 2, the piston-rod assembly 1 includes connecting rod 11, outer joint steel pipe 12, piston 13, front connector 14, interior connection
Steel pipe 15 and rear joint 16；The front connector 14 and rear joint 16 are equipped with central through hole.The front end of the interior joint steel pipe 15
Front connector 14 is connected, rear end connection rear joint 16, the front connector 14 is connected with the central oil passage hole rear end of connecting rod 11, after described
Joint 16 is connected with the front end in the central oil passage hole of piston 13, outside the front end and the rear end of connecting rod 11 of the outer joint steel pipe 12
Circle connection, the rear end of the outer joint steel pipe 12 and the cylindrical connection in front end of piston 13.The axial centre position of connecting rod 11
Provided with front oil duct 111, the front end side of the connecting rod 11 is provided with oil-out 112, and the oil-out 112 passes through with front oil duct 111
Lead to and connect, and hydraulic oil is transported in middle cylinder 101 by oil-out.
Referring to Fig. 4, the piston 13 is the two-stage step cylindrical structure of thick cylinder and thin cylinder composition, and axial direction is prolonged at center
On position, and one-level circular hole 131 is provided with thick cylindrical end, two level circular hole 133, the one-level circular hole 131 are provided with thin cylindrical end
Middle circular hole 132 is provided between two level circular hole 133.The thick cylinder is provided with the first annular groove 137 and the second annular groove 138.Institute
State thick cylinder and be provided with check valve oilhole 134, the thin cylinder is cylindrical to be provided with oil groove 136, the oil groove 136 and unidirectional valve oil
Hole 135 is communicated between hole 134.The sealing ring provided with together with supports first annular groove 137 with together with the second annular groove 138
Ring.
Referring to Fig. 3 and Fig. 5, the cylinder barrel assembly 3 includes cylinder barrel 31 and cylinder bottom 32, and the cylinder barrel 31 is endoporus by accurate
The steel pipe of processing, one end endoporus of cylinder barrel 31 are provided with Internal Pipe Thread, and said inner tube screw thread is matched somebody with somebody with the external pipe thread on cylinder cap 2
Close.The cylinder bottom 32 is provided with the setting circle shaft shoulder 321, buffering cylinder 322, oil inlet 323, internal thread hole 324, lower oil duct 325, side
Oil duct 326, main oil gallery 327, the first mounting hole 328 and the second mounting hole 329.The setting circle shaft shoulder 321 and the cylinder barrel 31
The other end be connected, and be provided with welding groove on junction is cylindrical, the buffering cylinder 322 and the setting circle shaft shoulder 321
It is coaxially connected, it is provided with main oil gallery 327 in the buffering cylinder 322.The cylindrical and piston 13 of the buffering cylinder 322
On one-level circular hole 131 be gap coordinate, the gap cooperatively forms annular space 8.
The vertical direction of main oil gallery 327 is provided with oil inlet 323, and the bottom of oil inlet 323 is provided with internal thread hole 324, institute
State oil duct 325 under the through connection of internal thread hole 324, the lower oil duct 325 and the through connection of side oil duct 326 of side.Described
One mounting hole 328 and the second mounting hole 329 are on the end face of the side of oil inlet 323, for oil cylinder to be arranged on into door frame.
Referring to Fig. 6 and Fig. 7, the commutation stop valve includes valve element 5 and valve seat 6.The valve element 5 is that one end is provided with the conical surface
Cylinder, center are provided with that central oil passage 51, the valve element 5 are cylindrical to be provided with annular groove 52, the central oil passage 51 and annular groove 52 it
Between penetrated by connection oil duct 53；The valve element 5 is arranged in the lower oil duct 325.
The valve seat 6 is cylinder, and center is provided with centre bore 61, and the both sides of the centre bore 61 are provided with two techniques
Hole 63, the cylindrical of the valve seat 6 are provided with external screw thread 62, and valve seat 6 is screwed in into institute by the fabrication hole 63 using special spanner
State on internal thread hole 324.
Referring to Fig. 8, in use, the conveying oil duct 7 gives the fuel feeding of middle cylinder 101 first by oil-out 112, and middle cylinder is allowed
101 start the balladeur train rising driven on door frame in advance, when middle cylinder 101 is up to upper end extreme position, are ended by the commutation
Valve gives the bottom oil pocket fuel feeding of piston 13 of left back cylinder, while gives the piston base oil pocket fuel feeding of cylinder 102 behind the right side, after left back cylinder and the right side
Cylinder 102 rises and jacks up the rising of door frame 9 again simultaneously reaches preset height.When the door frame falls after rise, the hydraulic pressure of the bottom of piston 13
Oil produces buffering by annular space 8 and fallen after rise, and the check valve 4 possesses the function that draining reduces back pressure in piston seal failure.
Specifically：
(1) the raising process of door frame 9：
Hydraulic oil enters from the oil inlet 323 of cylinder bottom 32 first, and the oil circuit of middle cylinder 101 is entered through conveying oil duct 7, makes middle cylinder
101 first act.When the raising of middle cylinder 101 in place when, hydraulic oil can be entered lower oil duct 325 and be promoted by the centre bore 61 of valve seat 6
The downward bottom of oil duct 325 movement of valve element 5, and the annular groove 52 on valve element 5 is connected with side oil duct 326, now hydraulic oil directly enters
Enter the bottom of piston 13, i.e., left back cylinder cavity of resorption, quickly establish pressure and realize that left back cylinder low delay starts, be finally reached middle cylinder 101
With the purpose that the action of cylinder 102 switching more smoothes out behind left back cylinder, the right side.
(2) door frame 9 declines process：
When the buffering cylinder 322 that piston-rod assembly 1 drops to the upper level circular hole 131 of piston 13 and cylinder bottom 32 does not have fit
Before, hydraulic oil directly can be back in forklift hydraulic system by the main oil gallery 327 of cylinder bottom 32, oil inlet 323.
When piston-rod assembly 1 drops to buffering 322 fit of cylinder of the upper level circular hole 131 of piston 13 and cylinder bottom 32, set
Throttling action can be caused by closing the annular space 8 formed, and now fluid can only flow back from the side oil duct 326 of cylinder bottom 32.Due to decrease speed
It is faster than lifting velocity, when fluid is by connection oil duct 53 on valve element 5, moment throttling produces very big pressure difference so that fluid
Valve element 5 is promoted to be moved to the lower top of oil duct 325, the annular groove 52, connection oil duct 53 on valve element 5 are completely severed.Cause fluid only
Energy annular space 8 flows back, and due to annular space 8, persistently throttling causes left back cylinder cavity of resorption to produce very big back pressure, is finally lived in the presence of back pressure
Stopper rod assembly 1 slows down, and is formed and declines pooling feature.
(3) interior leak occurs for oil cylinder：
When left back cylinder at piston 13, rear joint 16 in seal failure generation because leaking, the hydraulic oil of cavity of resorption can continue seepage
To left back cylinder epicoele or rod end chamber.If oil cylinder is raised to epicoele when less than certain operating pressure raising of loading pressure, when rising
Fluid when forming spacing, because the active area of the front end face of piston 13 is much smaller than rear end face, cause interior leakage to the fluid of epicoele
Caused pressure is much larger than cavity of resorption, under the pressure effect of epicoele, opens check valve 4 and fluid is drained into cavity of resorption, finally realize
The effect of leakage in itself is anti-.
Above content not makees any formal limitation to structure of the present utility model, shape.It is every according to this practicality
Any simple modification, equivalent change and modification that new technical spirit is made to above example, it is new to still fall within this practicality
In the range of type technical scheme.
Claims (9)
1. a kind of low delay for level Four above door frame start and be anti-in leakage cushion cylinder, forklift door frame be provided with left back cylinder,
Cylinder (102) after middle cylinder (101) and the right side, this three oil cylinders are the critical pieces for starting door frame raising and lowering, and the low delay opens
Leakage cushion cylinder is left back cylinder in dynamic and anti-, including piston-rod assembly (1), cylinder cap (2), cylinder barrel assembly (3), the cylinder barrel assembly
(3) one end is provided with oil inlet, other end installation cylinder cap (2), and the piston-rod assembly (1) is arranged in cylinder barrel assembly (3), passed through
Cylinder cap (2) endoporus stretches out acting；
It is characterized in that：Piston-rod assembly (1) center is provided with conveying oil duct (7) and piston (13), and the piston (13) is interior
Provided with check valve (4), the cylinder barrel assembly (3) is provided with cylinder bottom (32), and commutation stop valve is provided with the cylinder bottom (32)；The cylinder
Annular space (8) is provided between bottom (32) and piston (13)；
In use, the conveying oil duct (7) gives middle cylinder (101) fuel feeding first, and allow middle cylinder (101) to start in advance and drive on door frame
Balladeur train rise, when middle cylinder (101) is up to upper end extreme position, pass through the commutation stop valve give left back cylinder piston (13)
Bottom oil pocket fuel feeding, while rise simultaneously with cylinder (102) behind the right side to the piston base oil pocket fuel feeding of cylinder (102) behind the right side, left back cylinder
And door frame rising is jacked up again and reaches preset height；When the door frame falls after rise, the hydraulic oil of piston (13) bottom passes through annular space (8)
Produce buffering to fall after rise, the check valve (4) possesses the function that draining reduces back pressure in piston seal failure.
2. a kind of low delay for level Four above door frame according to claim 1 starts and leaks cushion cylinder in anti-, its
It is characterised by：The piston-rod assembly (1) include connecting rod (11), outer joint steel pipe (12), piston (13), front connector (14),
Interior joint steel pipe (15) and rear joint (16)；The front connector (14) and rear joint (16) are equipped with central through hole；The interior company
Connect the front end connection front connector (14) of steel pipe (15), rear end connection rear joint (16), the front connector (14) and connecting rod (11)
Central oil passage hole rear end connects, and the rear joint (16) is connected with the front end in the central oil passage hole of piston (13), the outer connection
The front end of steel pipe (12) and the cylindrical connection in connecting rod (11) rear end, the rear end of the outer joint steel pipe (12) with before piston (13)
Hold cylindrical connection.
3. a kind of low delay for level Four above door frame according to claim 1 starts and leaks cushion cylinder in anti-, its
It is characterised by：The piston (13) is the two-stage step cylindrical structure of thick cylinder and thin cylinder composition, and axial location is prolonged at center
On, and one-level circular hole (131) is provided with thick cylindrical end, it is provided with two level circular hole (133), the one-level circular hole in thin cylindrical end
(131) middle circular hole (132) is provided between two level circular hole (133)；The thick cylinder is provided with the first annular groove (137) and second
Annular groove (138)；The thick cylinder is provided with check valve oilhole (134), and the thin cylinder is cylindrical to be provided with oil groove (136) and extend
To thick cylinder front end face, hole (135) is communicated between the oil groove (136) and check valve oilhole (134).
4. a kind of low delay for level Four above door frame according to claim 3 starts and leaks cushion cylinder in anti-, its
It is characterised by：First annular groove (137) and the second annular groove (138) are provided with one of sealing ring support ring with together with.
5. a kind of low delay for level Four above door frame according to claim 1 starts and leaks cushion cylinder in anti-, its
It is characterised by：The cylinder barrel assembly (3) includes cylinder barrel (31) and cylinder bottom (32), and the cylinder barrel (31) is that endoporus passes through Precision Machining
Steel pipe, described cylinder barrel (31) one end endoporus is provided with Internal Pipe Thread, and said inner tube screw thread is matched somebody with somebody with the external pipe thread on cylinder cap (2)
Close；The cylinder bottom (32) be provided with the setting circle shaft shoulder (321), buffering cylinder (322), oil inlet (323), internal thread hole (324), under
Oil duct (325), side oil duct (326), main oil gallery (327), the first mounting hole (328) and the second mounting hole (329)；The setting circle
The other end of the shaft shoulder (321) and the cylinder barrel (31) is connected, and welding groove, the buffering are provided with junction is cylindrical
Cylinder (322) and the setting circle shaft shoulder (321) are coaxially connected, and main oil gallery (327) is provided with the buffering cylinder (322)；Main oil gallery
(327) vertical direction is provided with oil inlet (323), and oil inlet (323) bottom is provided with internal thread hole (324), the interior spiral shell
Oil duct (325) under pit (324) through connection, the lower oil duct (325) and side oil duct (326) through connection of side；It is described
First mounting hole (328) and the second mounting hole (329) are on the end face of oil inlet (323) side, for oil cylinder to be arranged on
On door frame.
6. a kind of low delay for level Four above door frame according to claim 5 starts and leaks cushion cylinder in anti-, its
It is characterised by：The commutation stop valve includes valve element (5) and valve seat (6)；
The valve element (5) is the cylinder that one end is provided with the conical surface, center be provided with central oil passage (51), the valve element (5) it is cylindrical on
Provided with annular groove (52), by connecting oil duct (53) insertion between the central oil passage (51) and annular groove (52)；Valve element (5) installation
In the lower oil duct (325)；
The valve seat (6) is cylinder, and center is provided with centre bore (61), and the both sides of the centre bore (61) are provided with two works
Skill hole (63), the cylindrical of the valve seat (6) are provided with external screw thread (62), using special spanner by the fabrication hole (63) by valve
Seat (6) is screwed on the internal thread hole (324).
7. a kind of low delay for level Four above door frame according to claim 5 starts and leaks cushion cylinder in anti-, its
It is characterised by：One-level circular hole (131) on the cylindrical and piston (13) of the buffering cylinder (322) coordinates for gap, institute
State gap and cooperatively form annular space (8).
8. a kind of low delay for level Four above door frame according to claim 2 starts and leaks cushion cylinder in anti-, its
It is characterised by：Connecting rod (11) the axial centre position is provided with front oil duct (111), and the front end side of the connecting rod (11) is set
There are oil-out (112), the oil-out (112) and front oil duct (111) through connection, and be transported to hydraulic oil by oil-out
In middle cylinder (101).
9. a kind of low delay for level Four above door frame according to claim 2 starts and leaks cushion cylinder in anti-, its
It is characterised by：The conveying oil duct (7) is by the front oil duct (111) in the connecting rod (11), front connector (14) and rear joint
(16) central through hole, the endoporus composition of interior joint steel pipe (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720733373.9U CN207158728U (en) | 2017-06-22 | 2017-06-22 | A kind of low delay for level Four above door frame starts and leaks cushion cylinder in anti- |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720733373.9U CN207158728U (en) | 2017-06-22 | 2017-06-22 | A kind of low delay for level Four above door frame starts and leaks cushion cylinder in anti- |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207158728U true CN207158728U (en) | 2018-03-30 |
Family
ID=61710534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720733373.9U Withdrawn - After Issue CN207158728U (en) | 2017-06-22 | 2017-06-22 | A kind of low delay for level Four above door frame starts and leaks cushion cylinder in anti- |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207158728U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107235451A (en) * | 2017-06-22 | 2017-10-10 | 安徽合力股份有限公司 | A kind of low delay for level Four above door frame starts and leaks cushion cylinder in anti- |
| CN115045889A (en) * | 2022-08-15 | 2022-09-13 | 烟台山河液压部件有限公司 | Shock attenuation hydraulic cylinder |
-
2017
- 2017-06-22 CN CN201720733373.9U patent/CN207158728U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107235451A (en) * | 2017-06-22 | 2017-10-10 | 安徽合力股份有限公司 | A kind of low delay for level Four above door frame starts and leaks cushion cylinder in anti- |
| CN107235451B (en) * | 2017-06-22 | 2023-02-24 | 安徽合力股份有限公司 | Low-delay starting and inner-leakage-preventing buffer oil cylinder for portal above four levels |
| CN115045889A (en) * | 2022-08-15 | 2022-09-13 | 烟台山河液压部件有限公司 | Shock attenuation hydraulic cylinder |
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