CN110485393A - Hydraulic bolt lifting device - Google Patents
Hydraulic bolt lifting device Download PDFInfo
- Publication number
- CN110485393A CN110485393A CN201910565972.8A CN201910565972A CN110485393A CN 110485393 A CN110485393 A CN 110485393A CN 201910565972 A CN201910565972 A CN 201910565972A CN 110485393 A CN110485393 A CN 110485393A
- Authority
- CN
- China
- Prior art keywords
- bolt
- lubrication
- connecting plate
- hole
- lifting 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.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B17/04—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction
- E02B17/08—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B17/04—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction
- E02B17/08—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering
- E02B17/0809—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering the equipment being hydraulically actuated
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N1/00—Constructional modifications of parts of machines or apparatus for the purpose of lubrication
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N21/00—Conduits; Junctions; Fittings for lubrication apertures
Abstract
The invention discloses a kind of hydraulic bolt lifting devices, belong to marine engineering equipment field.The hydraulic bolt lifting device includes wedge bracket, two ring beams, lubrication assembly, lift cylinder, spud leg and multiple latch assemblies, the latch assembly includes bracket, plugging pin oil cylinder, oil fuel tube, bolt and socket, and screw lubrication slot, lubrication channel and lubrication hole are provided in bolt.During bolt Plug Action, oil fuel tube is controlled by lubrication assembly and infuses lubricating oil into bolt, lubricating oil is transmitted in lubrication hole and screw lubrication slot by lubrication channel, to enhance latch surface lubricant effect.The lubricant effect of enhancing latch surface may be implemented in the hydraulic bolt lifting device.
Description
Technical field
The invention belongs to marine engineering equipment field, in particular to a kind of hydraulic bolt lifting device.
Background technique
Hydraulic bolt lifting device is a kind of for controlling the device of hoistable platform lifting, due to hydraulic bolt lifting device
Easy to operate, processing cost is low, and hydraulic bolt lifting device is widely used in ocean wind power mounting platform.
Hydraulic bolt lifting device mainly by spud leg, wedge bracket, determine ring beam, lift cylinder, rotating ring beam, bolt, socket
It is formed with plugging pin oil cylinder, bolt is controlled by plugging pin oil cylinder and is plugged into the pin hole of spud leg, to control the liter of lifting device
Drop.
In the implementation of the present invention, the inventor finds that the existing technology has at least the following problems:
Due to Jobs on the sea bad environments, be easy to cause the lubricant effect between bolt and socket poor, cause bolt with
It wears between socket comparatively fast, to prevent hoistable platform from smoothly realizing lifting action.
Summary of the invention
The embodiment of the invention provides a kind of hydraulic bolt lifting devices, and the lubrication effect of enhancing latch surface may be implemented
Fruit.The technical solution is as follows:
The embodiment of the invention provides a kind of hydraulic bolt lifting device, the hydraulic bolt lifting device includes solid stake
Frame, two ring beams, lubrication assembly, lift cylinder, spud leg and multiple latch assemblies, described two ring beams are set in the spud leg
On, there is pin hole on the spud leg, the both ends of the lift cylinder connects with described two ring beams respectively, the wedge bracket and
One of them described ring beam is fixedly connected, and multiple latch assemblies are provided on described two ring beams；
The latch assembly includes bracket, plugging pin oil cylinder, oil fuel tube, bolt and socket, the bracket and the bolt
Seat is fixed on the ring beam, and the bolt is inserted into the socket, one end of the plugging pin oil cylinder and the bolt
One end connection, the other end of the plugging pin oil cylinder are connect with the bracket, and the lateral wall of the bolt is provided with screw lubrication slot,
The bolt is equipped with the axially extending lubrication channel along the bolt, between the lubrication channel and the screw lubrication slot
Be communicated with multiple lubrication holes, one end of the lubrication channel is connect with one end of the oil fuel tube, the lubrication channel it is another
End seal is closed, and the other end of the oil fuel tube connects the lubrication assembly, and the lubrication assembly, which is used to inject to the oil fuel tube, to be moistened
Lubricating oil.
Further, the latch assembly further includes connecting plate, and the end face setting of one end of the bolt is fluted, described
Bolt has multiple lubrication channels, and one end of multiple lubrication channels is connected to the groove, and the connecting plate is solid
Surely it is connected on the end face of one end of the bolt, to surround lubricant reservoir, the piston rod of the plugging pin oil cylinder with the groove
It is connect with the connecting plate with the oil fuel tube.
Further, the side that the connecting plate is connect with the bolt has circumferential positive stop lug boss, the circumferential limit
Boss is stuck in the groove.
Further, the orthographic projection of the groove and the circumferential positive stop lug boss on the end face of the bolt is in cross
Type.
Further, multiple through-holes are provided on the circumferential positive stop lug boss, the through-hole is connected to the lubricant reservoir quilt
The multiple portions that the circumferential direction positive stop lug boss separates.
Further, the lubricant reservoir is respectively communicated with an institute by the multiple portions that the circumferential positive stop lug boss separates
State lubrication channel.
Further, multiple first threaded holes are provided on the connecting plate, the connecting pin end face of the bolt is along described
Bolt is axially provided with multiple second threaded holes, and first threaded hole and second threaded hole, which correspond, to be arranged, described
First threaded hole and corresponding second threaded hole are bolted.
Further, there are two connection otic placodes, two connection otic placodes to be set in parallel for setting on the connecting plate
On one end face of the connecting plate, one end of the connection otic placode is provided with first through hole, and the other end of the connection otic placode connects
The connecting plate is connect, one end of the piston rod is also equipped with the second through-hole, and the first through hole and second through-hole pass through
Pin shaft connection.
Further, there is pipe fitting, the pipe fitting is connected to the lubricant reservoir, the oil fuel tube on the connecting plate
It is detachably connected with the pipe fitting.
Further, sealing ring is folded between the connecting plate and the bolt.
Technical solution provided in an embodiment of the present invention has the benefit that
By the way that hydraulic bolt lifting device is arranged, which includes wedge bracket, two ring beams, lubrication group
Part, lift cylinder, spud leg and multiple latch assemblies, the latch assembly include bracket, plugging pin oil cylinder, oil fuel tube, bolt and bolt
, screw lubrication slot, lubricant reservoir and lubrication hole are provided in bolt.During bolt Plug Action, pass through lubrication assembly
Control oil fuel tube infuses lubricating oil into bolt, lubricating oil is transmitted in lubrication hole by lubrication channel, last lubricating oil is by moistening
Slide opening is transmitted to screw lubrication slot, and the bolt arrangement of screw lubrication slot makes latch surface uniform fold lubricating oil, to enhance
Latch surface lubricant effect, improves the working efficiency of bolt.Enhancing bolt table may be implemented in the hydraulic bolt lifting device
The lubricant effect in face, to improve hydraulic bolt lifting device working efficiency.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is a kind of structural schematic diagram of hydraulic bolt lifting device provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of latch assembly provided in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of bolt provided in an embodiment of the present invention；
Fig. 4 is the cross-sectional view of bolt provided in an embodiment of the present invention；
Fig. 5 is the structural schematic diagram of connecting plate provided in an embodiment of the present invention；
Fig. 6 is the left view of bolt provided in an embodiment of the present invention；
Fig. 7 is the structural schematic diagram of piston rod provided in an embodiment of the present invention；
Fig. 8 is the right view of connection component provided in an embodiment of the present invention.
Each symbol indicates that meaning is as follows in figure:
1, wedge bracket；2, ring beam；3, lubrication assembly；4, lift cylinder；5, spud leg；6, latch assembly；61, bracket；62, it inserts
Sell oil cylinder；621, piston rod；6211, the second through-hole；63, oil fuel tube；64, bolt；65, socket；641, screw lubrication slot；
642, lubrication channel；643, lubrication hole；644, connecting plate；6441, circumferential positive stop lug boss；6442, through-hole；6443, the first screw thread
Hole；6444, connection otic placode；6445, first through hole；6446, pipe fitting；645, groove；646, lubricant reservoir；647, the second screw thread
Hole；7, sealing ring.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
Fig. 1 is a kind of structural schematic diagram of hydraulic bolt lifting device provided in an embodiment of the present invention, as shown in Figure 1, liquid
Pressure bolt lifting device includes 1, two ring beam 2 of wedge bracket, lubrication assembly 3, lift cylinder 4, spud leg 5 and multiple latch assemblies 6,
Two ring beams 2 are set on spud leg 5, have pin hole on spud leg 5, and the both ends of lift cylinder 4 connect with two ring beams 2 respectively
It connects, wedge bracket 1 is fixedly connected with one of ring beam 2, and multiple latch assemblies 6 are provided on two ring beams 2.
Fig. 2 is the structural schematic diagram of latch assembly provided in an embodiment of the present invention, as shown in Fig. 2, latch assembly 6 includes branch
Frame 61, plugging pin oil cylinder 62, oil fuel tube 63, bolt 64 and socket 65, bracket 61 and socket 65 are fixed on ring beam 2, bolt
64 are inserted into socket 65, and one end of plugging pin oil cylinder 62 is connect with one end of bolt 64, the other end and branch of plugging pin oil cylinder 62
Frame 61 connects.
Fig. 3 is the structural schematic diagram of bolt provided in an embodiment of the present invention, as shown in figure 3, the lateral wall of bolt 64 is arranged
There is screw lubrication slot 641.Fig. 4 is the cross-sectional view of bolt provided in an embodiment of the present invention, as shown in figure 4, bolt 64 is equipped with edge
The axially extending lubrication channel 642 of bolt 64, is communicated with multiple lubrication holes between lubrication channel 642 and screw lubrication slot 641
643, one end of lubrication channel 642 is connect with one end of oil fuel tube 63, the other end closing of lubrication channel 642, oil fuel tube 63
The other end connects lubrication assembly 3, and lubrication assembly 3 is used to inject lubricating oil to oil fuel tube 63.
For the embodiment of the present invention by setting hydraulic bolt lifting device, which includes wedge bracket, two
A ring beam, lubrication assembly, lift cylinder, spud leg and multiple latch assemblies, the latch assembly include bracket, plugging pin oil cylinder, oiling
Pipe, bolt and socket are provided with screw lubrication slot, lubricant reservoir and lubrication hole in bolt.During bolt Plug Action,
Oil fuel tube is controlled by lubrication assembly and infuses lubricating oil into bolt, lubricating oil is transmitted in lubrication hole by lubrication channel, most
Lubricating oil is transmitted to screw lubrication slot by lubrication hole afterwards, and the bolt arrangement of screw lubrication slot lubricates latch surface uniform fold
Oil improves the working efficiency of bolt to enhance latch surface lubricant effect.The hydraulic bolt lifting device may be implemented
The lubricant effect for enhancing latch surface, to improve hydraulic bolt lifting device working efficiency.
Fig. 5 is the structural schematic diagram of connecting plate provided in an embodiment of the present invention, as shown in figure 5, latch assembly 6 can also wrap
Include connecting plate 644.Fig. 6 is the left view of bolt provided in an embodiment of the present invention, as shown in fig. 6, the end face of one end of bolt 64
It is arranged fluted 645, bolt 64 has multiple lubrication channels 642, and one end of multiple lubrication channels 642 is connected to groove 645,
Connecting plate 644 is fixedly connected on the end face of one end of bolt 64, to surround lubricant reservoir 646, plugging pin oil cylinder 62 with groove 645
Piston rod 621 and oil fuel tube 63 connect with connecting plate 644.It is empty that lubricant reservoir 646 can provide a storage for lubricating oil
Between, convenient for the circulation of lubricating oil.It can increase the contact area of piston rod 621 Yu bolt 64 by the way that connecting plate 644 is arranged.
Optionally, sealing ring 7 can be folded between connecting plate 644 and bolt 64.The leakage of lubricating oil can be prevented, thus
It avoids lubricating oil from wasting, lubricating oil is avoided to pollute.
Referring again to Fig. 5, the side that connecting plate 644 is connect with bolt 64 has circumferential positive stop lug boss 6441, circumferential to limit
Boss 6441 is stuck in groove 645.
In above-mentioned connection type, is cooperated by circumferential positive stop lug boss 6441 and groove 645, be able to achieve 644 He of connecting plate
Positioning between bolt 64, and the shearing force that the bolt that can reduce connecting bolt 64 and connecting plate 644 is subject to, reduce bolt
A possibility that fracture.
The height of circumferential positive stop lug boss 6441 can be less than the depth of groove 645, in this way by connecting plate 644 and bolt 64
After connection, there is gap, it can be ensured that the flowing of lubricating oil is unobstructed between circumferential positive stop lug boss 6441 and the bottom of groove 645.
Optionally, multiple through-holes 6442 can be set on circumferential positive stop lug boss 6441, through-hole 6442 is connected to lubricant reservoir
646 multiple portions separated by circumferential positive stop lug boss 6441.After through-hole 6442 is set, even if circumferential positive stop lug boss 6441
Height is identical as the depth of groove 645, is also ensured that the flowing of lubricating oil is unobstructed, therefore by setting through-hole 6442, can be with
Convenient for increasing the height of circumferential positive stop lug boss 6441, circumferential positive stop lug boss 6441 is made to be able to bear bigger shearing force.
Further, there are two connection otic placodes 6444, two connection otic placodes 6444 to be set in parallel for setting on connecting plate 644
On an end face of connecting plate 644, one end of connection otic placode 6444 is provided with first through hole 6445, connection otic placode 6444 it is another
End connection connecting plate 644.Fig. 7 is the structural schematic diagram of piston rod provided in an embodiment of the present invention, as shown in fig. 7, piston rod 621
One end be also equipped with the second through-hole 6211, first through hole 6445 is connected with the second through-hole 6211 by pin shaft.
In the above-described embodiment, connected by the connection of connection otic placode 6444 convenient for piston rod 621 and the fixed of connecting plate 644
It connects.
Illustratively, connection otic placode 6444 is triangular structure part, and piston rod 621 is fixedly folded in two connection otic placodes
Between 6444, connection otic placode 6444 is convenient for the dismounting of piston rod 621.
Further, multiple first threaded holes 6443 are provided on connecting plate 644, the connecting pin end face of bolt 64 is along bolt
64 are axially provided with multiple second threaded holes 647, and the first threaded hole 6443 and the second threaded hole 647, which correspond, to be arranged, and first
Threaded hole 6443 and corresponding second threaded hole 647 are bolted.
In the above-described embodiment, the stability that can increase that connecting plate 644 and bolt 64 connect is bolted.
Illustratively, it is symmetrically arranged with 4 the first connection screw thread holes on connecting plate 644, is symmetrically arranged with 4 on bolt 64
Second connection screw thread hole.First connection screw thread hole and the number of the second threaded hole 647 can be arranged according to the actual situation.
Fig. 8 is the right view of connection component provided in an embodiment of the present invention, in conjunction with Fig. 6 and Fig. 8, groove 645 and circumferential limit
Orthographic projection of the position boss 6441 on the end face of bolt 64 is in cross.Using such shape, circumferential positive stop lug boss 6441
Structural strength it is bigger, bigger shearing force can be born.
Further, there is pipe fitting 6446, pipe fitting 6446 is connected to lubricant reservoir 646, oil fuel tube 63 on connecting plate 644
It is detachably connected with pipe fitting 6446.Since oil fuel tube 63 and pipe fitting 6446 are detachable, can be convenient individually to oiling
Pipe 63 and connecting plate 644 are repaired and are replaced.
Preferably, lubrication hole 643 can be taper hole, and one end diameter that is connect with lubrication channel 642 of lubrication hole 643 compared with
Greatly, pressure of the lubricating oil at lubrication hole 643 can be increased, lubricating oil is made preferably to enter screw lubrication slot 641.
Referring again to Fig. 6, lubricant reservoir 646 is respectively communicated with one by the multiple portions that circumferential positive stop lug boss 6441 separates
Lubrication channel 642.
In the above-described embodiment, lubricant reservoir 646 is connected to by each part that circumferential positive stop lug boss 6441 separates
There is lubrication channel 642, circulate convenient for lubricating oil, lubricating oil is uniformly distributed in guarantee 64 perficial helical lubrication groove 641 of bolt.
Can be set on bolt 64 4 lubrication channels, 642,4 lubrication channels 642 along bolt 64 axis angularly between
Every distribution, lubricating oil can be made equably to flow to screw lubrication slot 641 by lubrication hole 643.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of hydraulic bolt lifting device, which is characterized in that the hydraulic bolt lifting device includes wedge bracket (1), two
Ring beam (2), lubrication assembly (3), lift cylinder (4), spud leg (5) and multiple latch assemblies (6), described two ring beams (2) cover
Be located on the spud leg (5), on the spud leg (5) have pin hole, the both ends of the lift cylinder (4) respectively with it is described two
Ring beam (2) connection, the wedge bracket (1) are fixedly connected with ring beam described in one of them (2), are all provided on described two ring beams (2)
It is equipped with multiple latch assemblies (6)；
The latch assembly (6) includes bracket (61), plugging pin oil cylinder (62), oil fuel tube (63), bolt (64) and socket (65),
The bracket (61) and the socket (65) are fixed on the ring beam (2), and the bolt (64) is inserted into the socket
(65) in, one end of the plugging pin oil cylinder (62) is connect with one end of the bolt (64), the plugging pin oil cylinder (62) it is another
End is connect with the bracket (61), and the lateral wall of the bolt (64) is provided with screw lubrication slot (641), on the bolt (64)
Equipped with the axially extending lubrication channel (642) along the bolt (64), the lubrication channel (642) and the screw lubrication slot
(641) it is communicated between multiple lubrication holes (643), one end of the lubrication channel (642) and the one end of the oil fuel tube (63)
Connection, the other end closing of the lubrication channel (642), the other end of the oil fuel tube (63) connect the lubrication assembly (3),
The lubrication assembly (3) is used to inject lubricating oil to the oil fuel tube (63).
2. hydraulic bolt lifting device according to claim 1, which is characterized in that the latch assembly (6) further includes connecting
Fluted (645) are arranged in the end face of fishplate bar (644), one end of the bolt (64), and the bolt (64) has multiple profits
The one end in slide-through road (642), multiple lubrication channels (642) is connected to the groove (645), the connecting plate (644)
It is fixedly connected on the end face of one end of the bolt (64), it is described to be surrounded lubricant reservoir (646) with the groove (645)
The piston rod (621) and the oil fuel tube (63) of plugging pin oil cylinder (62) are connect with the connecting plate (644).
3. hydraulic bolt lifting device according to claim 2, which is characterized in that the connecting plate (644) is inserted with described
The side for selling (64) connection has circumferential positive stop lug boss (6441), and the circumferential direction positive stop lug boss (6441) is stuck in the groove
(645) in.
4. hydraulic bolt lifting device according to claim 3, which is characterized in that the groove (645) and the circumferential direction
Orthographic projection of the positive stop lug boss (6441) on the end face of the bolt (64) is in cross.
5. hydraulic bolt lifting device according to claim 4, which is characterized in that on the circumferential direction positive stop lug boss (6441)
It is provided with multiple through-holes (6442), the through-hole (6442) is connected to the lubricant reservoir (646) by the circumferential positive stop lug boss
(6441) multiple portions separated.
6. hydraulic bolt lifting device according to claim 5, which is characterized in that the lubricant reservoir (646) is described
The multiple portions that circumferential positive stop lug boss (6441) separates respectively are communicated with the lubrication channel (642).
7. according to the described in any item hydraulic bolt lifting devices of claim 2~6, which is characterized in that the connecting plate (644)
On be provided with multiple first threaded holes (6443), the connecting pin end face of the bolt (64) is axially provided with along the bolt (64)
Multiple second threaded holes (647), first threaded hole (6443) and second threaded hole (647), which correspond, arranges, institute
It states the first threaded hole (6443) and corresponding second threaded hole (647) is bolted.
8. according to the described in any item hydraulic bolt lifting devices of claim 2~6, which is characterized in that the connecting plate (644)
There are two connection otic placode (6444), two connection otic placodes (6444) to be set in parallel in the connecting plate (644) for upper setting
An end face on, one end of the connection otic placode (6444) is provided with first through hole (6445), the connection otic placode (6444)
The other end connects the connecting plate (644), and one end of the piston rod (621) is also equipped with the second through-hole (6211), and described the
One through-hole (6445) is connected with second through-hole (6211) by pin shaft.
9. according to the described in any item hydraulic bolt lifting devices of claim 2~6, which is characterized in that the connecting plate (644)
Upper to have pipe fitting (6446), the pipe fitting (6446) is connected to the lubricant reservoir (646), the oil fuel tube (63) with it is described
Pipe fitting (6446) is detachably connected.
10. according to the described in any item hydraulic bolt lifting devices of claim 2~6, which is characterized in that the connecting plate
(644) it is folded between the bolt (64) sealing ring (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910565972.8A CN110485393B (en) | 2019-06-27 | 2019-06-27 | Hydraulic bolt lifting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910565972.8A CN110485393B (en) | 2019-06-27 | 2019-06-27 | Hydraulic bolt lifting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110485393A true CN110485393A (en) | 2019-11-22 |
| CN110485393B CN110485393B (en) | 2021-05-07 |
Family
ID=68546369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910565972.8A Active CN110485393B (en) | 2019-06-27 | 2019-06-27 | Hydraulic bolt lifting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110485393B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111609299A (en) * | 2020-04-07 | 2020-09-01 | 武汉船用机械有限责任公司 | Bolt lubricating system of lifting platform |
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|---|---|---|---|---|
| CN111609299A (en) * | 2020-04-07 | 2020-09-01 | 武汉船用机械有限责任公司 | Bolt lubricating system of lifting platform |
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| Publication number | Publication date |
|---|---|
| CN110485393B (en) | 2021-05-07 |
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