CN203847484U - Boom cylinder test device and test bed thereof - Google Patents
Boom cylinder test device and test bed thereof Download PDFInfo
- Publication number
- CN203847484U CN203847484U CN201420145151.1U CN201420145151U CN203847484U CN 203847484 U CN203847484 U CN 203847484U CN 201420145151 U CN201420145151 U CN 201420145151U CN 203847484 U CN203847484 U CN 203847484U
- Authority
- CN
- China
- Prior art keywords
- piston rod
- semi
- test stand
- girder
- testing device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 102
- 230000007246 mechanism Effects 0.000 claims abstract description 44
- 239000000725 suspension Substances 0.000 claims description 18
- 230000000694 effects Effects 0.000 abstract description 5
- 230000001276 controlling effect Effects 0.000 abstract description 3
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 40
- 238000000034 method Methods 0.000 description 15
- 230000008569 process Effects 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Landscapes
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The utility model discloses a test bed of a boom cylinder test device and the boom cylinder test device with the test bed. The test bed of the boom cylinder test device comprises a bed body, a pulley frame and a lifting mechanism which is used for regulating the height of the outer end of a piston rod, and the pulley frame is connected with the bed body in a reciprocating mode. A boom cylinder comprises a cylinder barrel and the piston rod, and the pulley frame supports the cylinder barrel. The lifting mechanism is capable of regulating the height of one end of the piston rod of the boom cylinder, and the bottom end of the lifting mechanism is connected with the bed body while the top end is connected with the outer end of the piston rod. By means of the structure, the test bed can ascend or descend through controlling the lifting mechanism so as to regulate the height of the outer end of the piston rod to enable the whole axial line of the boom cylinder to always stay in the same horizontal line so as to guarantee the test precision. The boom cylinder test device with the test bed has the same technical effects.
Description
Technical field
The utility model relates to the technical field of performance test of oil hydraulic cylinder, relates in particular to a kind of semi-girder cylinder testing device and test stand thereof.
Background technique
Because the load capacity of current oil cylinder constantly increases, the elongated distance of oil cylinder constantly increases, after some oil cylinders stretch out, can reach more than 20 meter, therefore large-tonnage semi-girder oil cylinder is as the component of truck crane most critical, and its safety and reliability is the bottleneck problem of its development always.Testing of oil cylinder is last procedure in oil cylinder manufacture course of products, and therefore the structure of cylinder apparatus has material impact for the performance of semi-girder oil cylinder.
In prior art, semi-girder cylinder testing device generally includes test stand and hydraulic system, and test stand is for carrying, support semi-girder oil cylinder, and hydraulic system, for controlling the rod chamber of oil hydraulic cylinder, the pressure of rodless cavity, realizes every test of semi-girder oil cylinder jointly.
Test stand comprises lathe bed and apparatus for suspension, and apparatus for suspension bottom and lathe bed are slidably matched, and the earrings of the piston rod of semi-girder oil cylinder is by a steel pipe support in one end of lathe bed, and the cylinder barrel of semi-girder oil cylinder is connected on apparatus for suspension.In process of the test, lathe bed drives apparatus for suspension with respect to lathe bed to-and-fro motion by chain drive, to drive the cylinder barrel of semi-girder oil cylinder to stretch out forward or to retract backward.
But the test stand of said structure has following technological deficiency:
First, lathe bed and apparatus for suspension adopt chain to be in transmission connection, and transmission continuity is poor, precision is lower, easily cause that oil cylinder shakes in process of the test, and in the time that cylinder barrel extends to limit position, chain can bump with lathe bed, sends larger noise.
Secondly, in process of the test, the middle part of piston rod does not have supporting mechanism, because the length of semi-girder oil cylinder is longer, piston rod elongated distance is long again, and under Gravitative Loads, piston rod can produce certain amount of deflection, make the center line of piston rod and cylinder barrel not point-blank, the precision of impact test.
In addition, the earrings of piston rod only depends on a steel pipe support, cannot fix, and the height of earrings cannot regulate, and causes piston rod in the time stretching out, and earrings end is not identical with the height of cylinder barrel, therefore produces larger noise.
In view of this, urgently for above-mentioned technical problem, semi-girder cylinder testing device of the prior art is done to further optimal design, improve the stability of process of the test, avoid producing noise, improve test accuracy.
Model utility content
The purpose of this utility model is for providing a kind of semi-girder cylinder testing device and test stand thereof, and it is adjustable that this test stand can be realized piston rod outer end height, avoids piston rod to produce amount of deflection, reduce noise, has therefore greatly improved test efficiency and precision.
For solving the problems of the technologies described above, the utility model provides a kind of test stand of semi-girder cylinder testing device, comprises lathe bed and apparatus for suspension, and described apparatus for suspension reciprocally moves and is connected with described lathe bed, and the cylinder barrel of described semi-girder oil cylinder is supported on described apparatus for suspension; Described test stand also comprises the elevator mechanism of the outer end height of the piston rod that regulates described semi-girder oil cylinder, and described elevator mechanism bottom is connected with described lathe bed, top is connected with the outer end of described piston rod.
Preferably, described elevator mechanism comprises the base being connected with described lathe bed, be plugged in the locating stud in the earrings of described piston rod, the first threaded stem that also comprises vertical setting, is connected with described whorl of base, one end of described the first threaded stem and described locating stud butt.
Adopt this structure, can adjust the vertical height of locating stud by screwing the first threaded stem, because locating stud is plugged in the earrings of piston rod, therefore the variable height of locating stud can drive the variable height of piston rod outer end.Can specifically the first threaded stem can be located to the top of base, semi-girder oil cylinder stretches out in process, in the time of piston rod height and cylinder barrel height generation deviation, press below locating stud by screwing clockwise the first threaded stem, and then reduce the height of piston rod outer end, adjust above locating stud by screwing counterclockwise the first threaded stem, and then the height of rising piston rod outer end, so that the overall axis of semi-girder oil cylinder in the same horizontal line, with proof test precision.This shows, above-mentioned elevator mechanism also has simple in structure, easy to operate, the advantage that cost of production is lower.
Preferably, described elevator mechanism also comprises the limit position part of the lengthwise position of adjusting described piston rod.
Preferably, described limit position part is the second threaded stem longitudinally arranging, and described the second threaded stem is threadedly connected to outside and inner and the described piston rod butt of described base.
Preferably, described test stand also comprises the supporting mechanism that is selectively supported in described piston rod below, and described supporting mechanism bottom is connected with described lathe bed, piston rod described in apical support.
Preferably, described supporting mechanism comprises connecting rod and telescopic oil cylinder, one end of described connecting rod, one end of described telescopic oil cylinder are all connected with lathe bed, and the other end of described telescopic oil cylinder is connected with described connecting rod, and the other end of described connecting rod is provided with the supporting part that supports described piston rod.
Preferably, described supporting part is supporting wheel, and described supporting wheel rolls and is connected with described connecting rod top.
Preferably, described lathe bed top is provided with tooth bar, and described apparatus for suspension bottom is provided with helical gear, described helical gear and described tooth bar engagement driving.
In addition, the utility model also provides a kind of semi-girder cylinder testing device, comprises interconnective test stand and hydraulic control system; Described test stand adopts the test stand of semi-girder cylinder testing device described above.
Because above-mentioned test stand has as above technique effect, therefore, comprise that the semi-girder cylinder testing device of this test stand also should have identical technique effect, do not repeat them here.
Brief description of the drawings
Fig. 1 provides the structural representation of the test stand of semi-girder cylinder testing device for the utility model;
Fig. 2 is the structural representation of elevator mechanism in Fig. 1;
Fig. 3 is the plan view of Fig. 2;
Fig. 4 is the structural representation of the supporting mechanism in Fig. 1;
Fig. 5 is the plan view of Fig. 4.
Wherein, the corresponding relation between reference character and the component names in Fig. 1 to Fig. 5 is:
Semi-girder oil cylinder 100; Cylinder barrel 101; Piston rod 102;
Lathe bed 11; Apparatus for suspension 12;
Elevator mechanism 13; Base 131; Locating stud 132; The first threaded stem 133; Limit position part 134;
Supporting mechanism 14; Connecting rod 141; Telescopic oil cylinder 142; Supporting part 143.
Embodiment
Core of the present utility model is for providing a kind of semi-girder cylinder testing device and test stand thereof, and this test stand can be realized stable support and the free adjusting to piston rod, and has reduced noise, has greatly improved the precision of every test.
In order to make those skilled in the art understand better the technical solution of the utility model, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.It should be noted that, the noun of locality " outward " occurring herein refers to the direction that extend to the left and right sides at Tu1 center, and " interior " refers to the direction at Fig. 1 middle left and right two sideward directed centers; Herein " vertically " refer in Fig. 1 the direction of downward-extension; Herein " longitudinally " refer in Fig. 1 the direction that extend left and right; The appearance that should be appreciated that these nouns of locality is set up taking Figure of description as benchmark, and their appearance should not affect protection domain of the present utility model.
Please refer to Fig. 1 to Fig. 3, Fig. 1 provides the structural representation of the test stand of semi-girder cylinder testing device for the utility model, and Fig. 2 is the structural representation of elevator mechanism in Fig. 1, the plan view that Fig. 3 is Fig. 2.
In a kind of embodiment, as shown in Figure 1 to Figure 3, the utility model provides a kind of test stand of semi-girder cylinder testing device, and this semi-girder cylinder testing device comprises test stand and hydraulic control system.Test stand comprises the elevator mechanism 13 of lathe bed 11, apparatus for suspension 12 and regulating piston bar 102 outer end height, and apparatus for suspension 12 is connected with lathe bed 11 to-and-fro motion.Semi-girder oil cylinder 100 comprises cylinder barrel 101 and piston rod 102, and cylinder barrel 101 is supported on apparatus for suspension 12.Elevator mechanism 13 can regulate piston rod 102 one end height of semi-girder oil cylinder, and elevator mechanism 13 bottoms are connected with lathe bed 11, top is connected with the outer end of piston rod 102.
In concrete scheme, above-mentioned elevator mechanism 13 comprises the base 131 being connected with lathe bed 11, be plugged in the locating stud 132 in the earrings of piston rod 102, one end and locating stud 132 butts of the first threaded stem 133, the first threaded stems 133 that also comprise vertical setting, are threaded with base 131.
Adopt this structure, can adjust the vertical height of locating stud 132 by screwing the first threaded stem 133, because locating stud 132 is plugged in the earrings of piston rod 102, therefore the variable height of locating stud 132 can drive the variable height of piston rod 102 outer ends.As shown in Figure 2, can specifically the first threaded stem 133 can be located to the top of base 131, semi-girder oil cylinder 100 stretches out in process, in the time that piston rod 102 height highly produce deviation with cylinder barrel 101, below 133, press locating stud 132 by screwing clockwise the first threaded stem, and then the height of reduction piston rod 102 outer ends, more than 133 adjust locating stud 132 by screwing counterclockwise the first threaded stem, and then the height of rising piston rod 102 outer ends, so that the overall axis of semi-girder oil cylinder in the same horizontal line, with proof test precision.Certainly, the first threaded stem 133 also can be located at the bottom of base 131.
In another kind of embodiment, above-mentioned elevator mechanism 13 can also comprise the limit position part 134 of the lengthwise position of adjusting piston rod 102.
In concrete scheme, as shown in Figures 2 and 3, above-mentioned limit position part 134 can be specially the second threaded stem of longitudinal setting, and the second threaded stem is threadedly connected to the outside of base 131, and the inner of the second threaded stem and piston rod 102 butts.
Adopt this structure, in the process of the test of semi-girder oil cylinder, if piston rod 102 has positional error, can promote piston rod 102 ends and vertically move by screwing the second threaded stem, to realize the fine setting of piston rod 102 positions, further improve the precision of test.
This shows, above-mentioned elevator mechanism 13 also has simple in structure, easy to operate, the advantage that cost of production is lower.Can expect, elevator mechanism 13, not only for said structure, can also adopt other structures.For example, can adopt the Vertical Cylinders of one end connection lathe bed 11, the other end connection piston rod 102 ends as elevator mechanism 13, adjust the length of Vertical Cylinders by controlling the pressure in Vertical Cylinders two chambeies, and then the height of control piston bar 102 ends.
Please refer to Fig. 4 and Fig. 5, Fig. 4 is the structural representation of the supporting mechanism 14 in Fig. 1, the plan view that Fig. 5 is Fig. 4.
In another kind of embodiment, as shown in Figure 4 and Figure 5, above-mentioned test stand also comprises the supporting mechanism 14 that is selectively supported in piston rod 102 bottoms, and supporting mechanism 14 bottoms are connected with lathe bed 11, apical support piston rod 102.
In concrete scheme, as shown in Figure 4 and Figure 5, above-mentioned supporting mechanism 14 can comprise connecting rod 141 and telescopic oil cylinder 142, one end of connecting rod 141, one end of telescopic oil cylinder 142 are all connected with lathe bed 11, the other end of telescopic oil cylinder 142 is connected with connecting rod 141, and the other end of connecting rod 141 is provided with the supporting part 143 of support piston bar 102.
Adopt this structure, in the time that semi-girder oil cylinder is stretched to predeterminable range, can telescopic oil cylinder 142 be extended by the hydraulic oil in two chambeies of control telescopic oil cylinder 142, drivening rod 141 upwards rotates, supporting part 143 also rises thereupon, until supporting part 143 is supported in piston rod 102 bottoms.In the time that semi-girder oil cylinder shrinks, because piston rod 102 foreshortens to predeterminable range, without support, can control telescopic oil cylinder 142 and make its shortening, drivening rod 141 rotates, and supporting part 143 also declines thereupon, until telescopic oil cylinder 142, connecting rod 141 are all placed horizontally at lathe bed 11 inside.
As can be seen here, above-mentioned supporting mechanism 14 can be opened in the time that piston rod 102 extends, and avoids piston rod 102 to produce amount of deflection under Action of Gravity Field and affects test accuracy, so that piston rod 102 remains level, has greatly improved test accuracy.And above-mentioned supporting mechanism 14 is folding in the time that piston rod 102 is regained, and takes up room less.
Can expect, above-mentioned supporting mechanism 14 is not limited in said structure.For example, supporting mechanism 14 can comprise first connecting rod, second connecting rod, one end of first connecting rod is fixedly connected with test stand, one end of second connecting rod is slidably connected with test stand by slide block, and the other end of first connecting rod is connected with second connecting rod, the other end of second connecting rod arranges supporting part 143.Like this, in the time that piston rod 102 is stretched to predeterminable range, promote slide block to the connecting end of first connecting rod 141 and test stand near rear and stop at this position so that second connecting rod 141 drives, first connecting rod 141 positions raise, supporting part 143 support piston bars 102.After piston rod 102 is regained, slide block can be pushed back, supporting mechanism 14 is folding.
More specifically, above-mentioned supporting part 143 can be specially supporting wheel, and supporting wheel rolls and is connected with connecting rod 141 tops.
Like this, open when supporting mechanism 14, piston rod 102 is supported on supporting wheel, piston rod 102 also forms rolling pair with supporting wheel, frictional force between piston rod 102 and supporting wheel is less, and the resistance being subject to when therefore piston rod 102 continues to elongate or shorten is also less, has further ensured test accuracy.
Certainly, above-mentioned supporting part 143 can also be made as dunnage, and after supporting mechanism 14 rises, this dunnage and piston rod 102 form sliding pair, but the friction of the two formation is larger.
In another kind of embodiment, above-mentioned lathe bed 11 tops are provided with tooth bar, and apparatus for suspension 12 bottoms are provided with helical gear, the engagement of helical teeth wheel and rack.
Adopt this structure, the transmission continuity of helical gear, tooth bar is better, and transmission accuracy is higher, with chaindriven structure comparison in prior art, avoids oil cylinder to shake in process of the test, and then avoids the noise producing in experimentation.
In addition, the utility model also provides a kind of semi-girder cylinder testing device that comprises above-mentioned test stand, comprises interconnective test stand and hydraulic control system, and wherein test stand adopts structure as above.
Because above-mentioned test stand has above-mentioned technique effect, therefore, comprise that the testing apparatus of this test stand also should have corresponding technique effect, do not repeat them here.
Above a kind of semi-girder cylinder testing device provided by the utility model and test stand thereof are described in detail.Applied specific case herein principle of the present utility model and mode of execution are set forth, above embodiment's explanation is just for helping to understand method of the present utility model and core concept thereof.Should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.
Claims (9)
1. a test stand for semi-girder cylinder testing device, comprises lathe bed (11) and apparatus for suspension (12), and described apparatus for suspension (12) reciprocally moves and is connected with described lathe bed (11), and the cylinder barrel (101) of described semi-girder oil cylinder is supported on described apparatus for suspension (12); It is characterized in that, described test stand also comprises the elevator mechanism (13) of the outer end height of the piston rod (102) that regulates described semi-girder oil cylinder, and described elevator mechanism (13) bottom is connected with described lathe bed (11), top is connected with the outer end of described piston rod (102).
2. the test stand of semi-girder cylinder testing device according to claim 1, it is characterized in that, described elevator mechanism (13) comprises the base (131) being connected with described lathe bed (11), be plugged in the locating stud (132) in the earrings of described piston rod (102), the first threaded stem (133) that also comprises vertical setting, is threaded with described base (131), one end of described the first threaded stem (133) and described locating stud (132) butt.
3. the test stand of semi-girder cylinder testing device according to claim 2, is characterized in that, described elevator mechanism (13) also comprises the limit position part (134) of the lengthwise position of adjusting described piston rod (102).
4. the test stand of semi-girder cylinder testing device according to claim 3, it is characterized in that, described limit position part (134) is the second threaded stem longitudinally arranging, and described the second threaded stem is threadedly connected to outside and inner and described piston rod (102) butt of described base (131).
5. according to the test stand of the semi-girder cylinder testing device described in claim 1-4 any one, it is characterized in that, described test stand also comprises the supporting mechanism (14) that is selectively supported in described piston rod (102) below, and described supporting mechanism (14) bottom is connected with described lathe bed (11), piston rod (102) described in apical support.
6. the test stand of semi-girder cylinder testing device according to claim 5, it is characterized in that, described supporting mechanism (14) comprises connecting rod (141) and telescopic oil cylinder (142), one end of one end of described connecting rod (141), described telescopic oil cylinder (142) is all connected with lathe bed (11), the other end of described telescopic oil cylinder (142) is connected with described connecting rod (141), and the other end of described connecting rod (141) is provided with the supporting part (143) that supports described piston rod (102).
7. the test stand of semi-girder cylinder testing device according to claim 6, is characterized in that, described supporting part (143) is supporting wheel, and described supporting wheel rolls and is connected with described connecting rod (141) top.
8. according to the test stand of the semi-girder cylinder testing device described in claim 1-4 any one, it is characterized in that, described lathe bed (11) top is provided with tooth bar, and described apparatus for suspension (12) bottom is provided with helical gear, described helical gear and described tooth bar engagement driving.
9. a semi-girder cylinder testing device, comprises interconnective test stand and hydraulic control system; It is characterized in that, described test stand adopts the test stand of the semi-girder cylinder testing device as described in claim 1-8 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420145151.1U CN203847484U (en) | 2014-03-27 | 2014-03-27 | Boom cylinder test device and test bed thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420145151.1U CN203847484U (en) | 2014-03-27 | 2014-03-27 | Boom cylinder test device and test bed thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203847484U true CN203847484U (en) | 2014-09-24 |
Family
ID=51560509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420145151.1U Expired - Lifetime CN203847484U (en) | 2014-03-27 | 2014-03-27 | Boom cylinder test device and test bed thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203847484U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108930689A (en) * | 2018-07-27 | 2018-12-04 | 淮南国力液压装备有限公司 | A kind of cylinder seal part testing stand |
| CN114526912A (en) * | 2022-03-03 | 2022-05-24 | 徐州徐工液压件有限公司 | Upset lift that shifts bears formula hydro-cylinder test device |
-
2014
- 2014-03-27 CN CN201420145151.1U patent/CN203847484U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108930689A (en) * | 2018-07-27 | 2018-12-04 | 淮南国力液压装备有限公司 | A kind of cylinder seal part testing stand |
| CN114526912A (en) * | 2022-03-03 | 2022-05-24 | 徐州徐工液压件有限公司 | Upset lift that shifts bears formula hydro-cylinder test device |
| CN114526912B (en) * | 2022-03-03 | 2023-12-19 | 徐州徐工液压件有限公司 | Turnover deflection lifting bearing type oil cylinder test device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109339524A (en) | A kind of article carrying platform and the transport trolley for stereo garage | |
| CN203847484U (en) | Boom cylinder test device and test bed thereof | |
| CN103836026B (en) | A kind of semi-girder cylinder testing device and hydraulic control system thereof | |
| CN106270016B (en) | The horizontal straightening machine of H profile steel | |
| CN105600689A (en) | Stretching lifting apparatus | |
| CN201925286U (en) | Medical multilevel synchronous telescopic cylinder | |
| CN203612880U (en) | Lifting device | |
| CN103009039A (en) | Multi-cylinder horizontal type assembling machine | |
| CN204021754U (en) | Adjustable straps conveyer | |
| CN204138269U (en) | The arm-type lifting table of many bars synchronization telescope | |
| CN203890000U (en) | Mechanical hanging workbench freedom degree adjusting mechanism | |
| CN207524892U (en) | A kind of scissor-type feeding device | |
| CN204893910U (en) | Machinery lifting bed equipment | |
| CN106564760A (en) | Clamping type stacking machine for complicated-shape bottles | |
| CN203717525U (en) | Multifunctional cylinder device | |
| CN208577372U (en) | A kind of hoist roller | |
| CN206184952U (en) | Horizontal straightener of H shaped steel | |
| CN103462699A (en) | Medical object carrying bed | |
| CN207533727U (en) | A kind of anti-slip bender | |
| CN203742633U (en) | Parallelogram mechanism achieving small stroke and large displacement with oil cylinders | |
| CN206393058U (en) | Laser engraving machine | |
| CN203371644U (en) | Advancing and retreating buffer mechanism of feeder of brick making machine | |
| CN203483526U (en) | Medical object carrying bed | |
| CN205685628U (en) | A kind of cold storage plate hydraulic die with hoistable platform | |
| CN204125147U (en) | For the synchronous lifting device of filling location |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140924 |
|
| CX01 | Expiry of patent term |