CN218342006U - Hydraulic stretcher for lifting water turbine - Google Patents
Hydraulic stretcher for lifting water turbine Download PDFInfo
- Publication number
- CN218342006U CN218342006U CN202221965130.5U CN202221965130U CN218342006U CN 218342006 U CN218342006 U CN 218342006U CN 202221965130 U CN202221965130 U CN 202221965130U CN 218342006 U CN218342006 U CN 218342006U
- Authority
- CN
- China
- Prior art keywords
- hydraulic
- nut
- bolt
- connecting gear
- lifting
- 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.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Hydraulic Turbines (AREA)
Abstract
The utility model discloses a hydraulic stretching ware is used in hydraulic turbine promotion relates to hydraulic stretching ware field for hydraulic turbine, including the equipment principal, it includes the hydro-cylinder, in hanging into the machine hole through the rotor with the generator, it aligns to add two preceding mark lines of manpower adjustment pull-down through the bridge machine, at first arrange the rotor in thrust bearing and go up the atress, wear into the flange hole with the bolt simultaneously, then hydraulic stretching ware is adorned to the symmetry, hydraulic stretching ware pump station has been connected and has been started, slowly promote hydraulic turbine to mounted position, except that the hole that is equipped with the stretcher, all the other link axle bolt and manual pretension of all adorning, make the bolt atress, pull down hydraulic stretching ware, withdraw from special bolt, will leave the hole and adorn bolt and pretension, this time accomplish water and send out link axle work. And then, according to the requirement of the pretightening force of the water-jet connecting shaft bolt, sequentially and symmetrically pretightening, and through adopting a hydraulic stretcher to perform pretightening treatment on the water-jet connecting shaft bolt, the purchase cost of a hydraulic jack can be reduced, and meanwhile, the use risk of the screw jack can be reduced.
Description
Technical Field
The utility model relates to a hydraulic stretching ware technical field for the hydraulic turbine, especially a hydraulic stretching ware is used in hydraulic turbine promotion.
Background
In front of the water generator connecting shaft, for the axial flow propeller type unit, the water turbine is hung on a seat ring through a mounting tool on a blade or a rotating support tool is mounted in a water turbine chamber, so that a large shaft of the water turbine is embraced. For mixed-flow units, the runner is placed temporarily on the bottom ring or on a wedge plate support placed on the foundation ring. The position of the water turbine is lower than the installation position by a few centimeters or even ten centimeters. At present, when a plurality of power plants are connected with a shaft, a waist-shaped plate, a bolt, a jack and the like are adopted to slowly lift the water turbine to a mounting position, and the workload is very large. And a large shaft of the water turbine is lifted up by a hoist directly used by a plurality of small power plants to be connected with the shaft.
If the screw jack is used for connecting the shaft, a large amount of time is consumed, the installation period or the maintenance period is influenced, and the screw jack needs to be manually operated. If one person presses fast, the jack is damaged by the stress of the jack, the stress of other jacks can be increased, and if the stress of other jacks exceeds the stress limit, other jacks can be damaged. If one person presses slowly, the stress of the other jacks is increased, the stress of the jacks is increased immediately, if the stress of the jacks exceeds the stress limit, the other jacks can be damaged, and finally, the jack which is pressed slowly can be damaged. Therefore, the use of the screw jack is unreliable and unsafe. If the hydraulic jack is used, the stress is uniform, but the purchase cost of the hydraulic jack is high, and the equipment is not purchased by small and medium-sized power plants. The waist-shaped plate is heavy, troublesome in carrying, assembly and disassembly, time-consuming and labor-consuming. For this reason, we need to develop a hydraulic stretcher for lifting a hydraulic turbine.
SUMMERY OF THE UTILITY MODEL
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract of the specification and the title of the application to avoid obscuring the purpose of this section, the abstract of the specification and the title of the application, and such simplifications or omissions are not intended to limit the scope of the invention.
The present invention has been made in view of the above and/or other existing problems.
Therefore, the utility model aims to solve the problem of how to provide a hydraulic stretching ware is used in hydraulic turbine promotion.
In order to solve the technical problem, the utility model provides a following technical scheme: a hydraulic stretcher for lifting a water turbine comprises an equipment main body, wherein the equipment main body comprises an oil cylinder, the bottom of the oil cylinder is provided with a supporting seat, one side of the supporting seat is provided with an adjusting assembly, and the bottom of the supporting seat is also connected with a bottom plate; the middle part through connection of bottom plate has the coupling bolt, the top threaded connection of coupling bolt has coupling nut, coupling nut is located the inside of supporting seat.
Based on the technical characteristics: because of the hydraulic turbine actual position is lower than the mounted position, through hanging the rotor of generator in the machine hole, adjust two flanges through bridge crane with manpower and tear the preceding mark line alignment open, at first place the rotor atress on the thrust bearing, wear the flange hole with the bolt simultaneously, then the symmetry is adorned hydraulic stretcher, connect hydraulic stretcher pump station and start, slowly promote the hydraulic turbine to the mounted position, except that being equipped with the hole of stretcher, all the other link shaft bolts and manual pretension of all adorning, make the bolt atress, tear down the hydraulic stretcher, withdraw from special bolt, will remain the hole and adorn the bolt and pretension, so far, accomplish the water and send out the link shaft work. Sequentially and symmetrically pre-tightening according to the pre-tightening force requirement of the water generator connecting shaft bolt; through adopting the hydraulic pressure elongator to carry out pretension processing at the pretension of water-spraying connecting shaft bolt, can also reduce the risk that screw jack used when can reducing hydraulic jack purchase cost.
As a hydraulic stretching machine's an preferred scheme is used in hydraulic turbine promotion, wherein: the hydro-cylinder includes first metal casing, the internal connection of first metal casing has the piston, be the laminating connection between piston and the first metal casing.
Based on the technical characteristics: because of being connected for the laminating between piston and the first metal casing, can guarantee the stability of piston at the inside lift adjustment of first metal casing.
As a hydraulic pressure elongator is used in hydraulic turbine promotion's an preferred scheme, wherein: the middle part of piston is provided with lifting nut, be the joint cooperation between lifting nut and the piston.
Based on the technical characteristics: because of the clamping fit between the lifting nut and the piston, when the piston is lifted and adjusted in the first metal shell, the lifting nut can be driven to synchronously lift and adjust.
As a hydraulic pressure elongator is used in hydraulic turbine promotion's an preferred scheme, wherein: the middle part of the lifting nut is provided with a lifting cavity in a penetrating way, and the lifting cavity is matched with the coupling bolt structure.
Based on the technical characteristics: because of promoting cavity and shaft coupling bolt structure phase-match, conveniently accomodate the one end of shaft coupling bolt in the inner chamber of promoting the nut.
As a hydraulic stretching machine's an preferred scheme is used in hydraulic turbine promotion, wherein: the supporting seat comprises a second metal shell, and a nut clamping ring is arranged inside the second metal shell.
Based on the technical characteristics: through the nut joint ring additionally arranged in the second metal shell, the connecting nut needing pre-tightening can be clamped and limited.
As a hydraulic stretching machine's an preferred scheme is used in hydraulic turbine promotion, wherein: a limiting cavity is formed between the second metal shell and the nut clamping ring, a first baffle is fixedly mounted in the middle of the limiting cavity, and a second baffle is fixedly arranged at the bottom of the limiting cavity.
Based on the technical characteristics: through first baffle and second baffle structure, can be spacing in the inside of second metal casing with the joint of nut joint ring joint.
As a hydraulic stretching machine's an preferred scheme is used in hydraulic turbine promotion, wherein: the middle part of the nut clamping ring is provided with a first connecting gear, the inner side of the bottom end of the nut clamping ring is provided with a nut clamping groove, and the nut clamping groove is matched with the connecting nut structure.
Based on the technical characteristics: because of nut draw-in groove and coupling nut structure phase-match, conveniently with the spacing bottom of connecting nut joint ring in nut joint.
As a hydraulic stretching machine's an preferred scheme is used in hydraulic turbine promotion, wherein: the adjusting component comprises an adjusting shell, a crank is arranged at the top of the adjusting shell, and a hybrid stepping motor is further connected to the bottom of the adjusting shell.
Based on the technical characteristics: through the crank and the hybrid stepping motor that install additional respectively at the adjusting part both ends, can select manual regulation mode or electronic regulation mode by oneself according to the in service behavior of water generator connecting axle bolt pretension to this richenes hydraulic pressure elongator's for the hydraulic turbine promotes functional.
As a hydraulic stretching machine's an preferred scheme is used in hydraulic turbine promotion, wherein: the inside swing joint of adjusting the shell has first pivot, the both ends of first pivot are fixed connection with crank and hybrid step motor respectively, the outside of first pivot still fixed mounting has the second to connect the gear.
Based on the technical characteristics: through the second connecting gear who installs additional at first pivot outside, and the both ends of first pivot respectively with crank and hybrid step motor be fixed connection, rotate through crank and hybrid step motor, all can drive the rotation of second connecting gear.
As a hydraulic stretching machine's an preferred scheme is used in hydraulic turbine promotion, wherein: one side of the second connecting gear is provided with a third connecting gear, the third connecting gear is meshed with the second connecting gear and the first connecting gear, and a second rotating shaft is further arranged in the middle of the third connecting gear.
Based on the technical characteristics: when the crank or the hybrid stepping motor drives the second connecting gear to rotate, the third connecting gear is meshed with the second connecting gear and the first connecting gear to drive the nut clamping ring to rotate, the connecting nut connected with one end of the coupling bolt in a threaded mode is clamped in the nut clamping groove of the nut clamping ring, and when the nut clamping ring is driven by the crank or the hybrid stepping motor, the connecting nut connected with one end of the coupling bolt in a threaded mode is conveniently pre-tightened.
The utility model discloses beneficial effect does: because of the hydraulic turbine actual position is lower than the mounted position, through hanging the rotor of generator in the machine hole, adjust two flanges through bridge crane with manpower and tear the preceding mark line alignment open, at first place the rotor atress on the thrust bearing, wear the flange hole with the bolt simultaneously, then the symmetry is adorned hydraulic stretcher, connect hydraulic stretcher pump station and start, slowly promote the hydraulic turbine to the mounted position, except that being equipped with the hole of stretcher, all the other link shaft bolts and manual pretension of all adorning, make the bolt atress, tear down the hydraulic stretcher, withdraw from special bolt, will remain the hole and adorn the bolt and pretension, so far, accomplish the water and send out the link shaft work. Sequentially and symmetrically pre-tightening according to the pre-tightening force requirement of the water-spraying connecting shaft bolt; through adopting hydraulic pressure elongator to carry out pretension processing at water generator connecting shaft bolt pretension, can reduce hydraulic jack purchase cost simultaneously, can also reduce the risk that screw jack used.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor. Wherein:
fig. 1 is an overall configuration diagram of a hydraulic stretcher for lifting a water turbine in example 1.
Fig. 2 is a schematic view of the internal structure of a support base of the hydraulic tensioner for lifting a water turbine in example 2.
Fig. 3 is a schematic diagram of the internal structure of an adjusting assembly of the hydraulic stretcher for lifting the water turbine in example 3.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail with reference to the accompanying drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways different from the specific details set forth herein, and one skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Furthermore, the references herein to "one embodiment" or "an embodiment" refer to a particular feature, structure, or characteristic that may be included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Example 1
Referring to fig. 1-2, there is provided a hydraulic stretcher for lifting a water turbine according to a first embodiment of the present invention, including,
the device comprises a device main body 100, a base plate 104 and a control device, wherein the device main body comprises an oil cylinder 101, a support seat 102 is installed at the bottom of the oil cylinder 101, an adjusting component 103 is arranged on one side of the support seat 102, and the bottom of the support seat 102 is also connected with the base plate 101;
the middle part through connection of bottom plate 104 has coupling bolt 104a, coupling bolt 104 a's top threaded connection has coupling nut 104b, coupling nut 104b is located the inside of supporting seat 102, hydro-cylinder 101 includes first metal casing 101a, the internal connection of first metal casing 101a has piston 101b, be connected for the laminating between piston 101b and the first metal casing 101a, can guarantee piston 101b at the inside lift adjustment's of first metal casing 101a stability.
The middle part of the piston 101b is provided with a lifting nut 101c, the lifting nut 101c is in clamping fit with the piston 101b, and the lifting nut 101c can be driven to synchronously perform lifting adjustment movement when the piston 101b performs lifting adjustment in the first metal shell 101a due to the clamping fit between the lifting nut 101c and the piston 101 b.
Example 2
Referring to fig. 2-3, a second embodiment of the present invention, which is different from the first embodiment, is: the middle part of the lifting nut 101c is provided with a lifting cavity 101c-1 in a penetrating mode, the lifting cavity 101c-1 is structurally matched with the coupling bolt 104a, and one end of the coupling bolt 104a is conveniently accommodated in the inner cavity of the lifting nut 101c due to the fact that the lifting cavity 101c-1 is structurally matched with the coupling bolt 104 a.
The supporting seat 102 comprises a second metal shell 102a, a nut clamping ring 102b is arranged inside the second metal shell 102a, and the nut clamping ring 102b additionally arranged inside the second metal shell 102a can play a clamping limiting role on the connecting nut 104b needing to be pre-tightened.
A limiting cavity 102a-1 is formed between the second metal shell 102a and the nut clamping ring 102b, a first baffle plate 102a-2 is fixedly installed in the middle of the limiting cavity 102a-1, a second baffle plate 102a-3 is fixedly arranged at the bottom of the limiting cavity 102a-1, and the nut clamping ring 102b can be clamped and limited in the second metal shell 102a through the structures of the first baffle plate 102a-2 and the second baffle plate 102 a-3.
The first connecting gear 102b-1 is mounted in the middle of the nut clamping ring 102b, the nut clamping groove 102b-2 is formed in the inner side of the bottom end of the nut clamping ring 102b, the nut clamping groove 102b-2 is structurally matched with the connecting nut 104b, and the connecting nut 104b is conveniently in limited connection at the bottom of the nut clamping ring 102b due to the fact that the nut clamping groove 102b-2 is structurally matched with the connecting nut 104 b.
Example 3
Referring to fig. 2-3, a third embodiment of the present invention is different from the first two embodiments: the adjusting component 103 comprises an adjusting shell 103a, a crank 103b is arranged at the top of the adjusting shell 103a, a hybrid stepping motor 103c is further connected to the bottom of the adjusting shell 103a, a manual adjusting mode or an electric adjusting mode can be automatically selected according to the service condition of the bolt pre-tightening of the water generator connecting shaft through the crank 103b and the hybrid stepping motor 103c which are respectively additionally arranged at two ends of the adjusting component 103, and therefore the functionality of the hydraulic stretcher for water turbine lifting is enriched.
A first rotating shaft 103a-1 is movably connected inside the adjusting shell 103a, two ends of the first rotating shaft 103a-1 are fixedly connected with a crank 103b and a hybrid stepping motor 103c respectively, a second connecting gear 103a-2 is fixedly installed outside the first rotating shaft 103a-1, the second connecting gear 103a-2 is additionally installed outside the first rotating shaft 103a-1, two ends of the first rotating shaft 103a-1 are fixedly connected with the crank 103b and the hybrid stepping motor 103c respectively, and the second connecting gear 103a-2 can be driven to rotate by the rotation of the crank 103b and the hybrid stepping motor 103 c.
A third connecting gear 103a-3 is arranged on one side of the second connecting gear 103a-2, the third connecting gear 103a-3 is in meshed connection with the second connecting gear 103a-2 and the first connecting gear 102b-1, and a second rotating shaft 103a-4 is further arranged in the middle of the third connecting gear 103a-3, when the crank 103b or the hybrid stepping motor 103c drives the second connecting gear 103a-2 to rotate, the nut clamping ring 102b can be driven to rotate due to the meshed connection between the third connecting gear 103a-3 and the second connecting gear 103a-2 and the first connecting gear 102b-1, and the connecting nut 104b in threaded connection with one end of the coupling bolt 104a is clamped in the nut clamping groove 102b-2 of the nut clamping ring 102b, and when the nut clamping ring 102b is driven by the crank 103b or the hybrid stepping motor 103c, the connecting nut 104b in threaded connection with one end of the coupling bolt 104a can be pre-tightened conveniently.
It should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or substituted by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.
Claims (10)
1. The utility model provides a hydraulic stretching ware is used in hydraulic turbine promotion which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
the device comprises an equipment main body (100) and a control system, wherein the equipment main body comprises an oil cylinder (101), a supporting seat (102) is installed at the bottom of the oil cylinder (101), an adjusting assembly (103) is arranged on one side of the supporting seat (102), and a bottom plate (104) is further connected to the bottom of the supporting seat (102);
the middle part of the bottom plate (104) is connected with a coupling bolt (104 a) in a penetrating mode, the top of the coupling bolt (104 a) is connected with a connecting nut (104 b) in a threaded mode, and the connecting nut (104 b) is located inside the supporting seat (102).
2. A hydraulic tensioner as claimed in claim 1, characterized in that: hydro-cylinder (101) include first metal casing (101 a), the internal connection of first metal casing (101 a) has piston (101 b), be the laminating between piston (101 b) and first metal casing (101 a) and be connected.
3. A hydraulic tensioner as claimed in claim 2, characterized in that: the middle part of piston (101 b) is provided with lifting nut (101 c), be the joint cooperation between lifting nut (101 c) and piston (101 b).
4. A hydraulic tensioner as claimed in claim 3, characterized in that: the middle part of the lifting nut (101 c) penetrates through a lifting cavity (101 c-1), and the lifting cavity (101 c-1) is matched with the coupling bolt (104 a) in structure.
5. A hydraulic tensioner as claimed in any one of claims 1 to 4, for lifting a hydraulic turbine, characterized in that: the supporting seat (102) comprises a second metal shell (102 a), and a nut clamping ring (102 b) is arranged inside the second metal shell (102 a).
6. The hydraulic tensioner as claimed in claim 5, wherein: a limiting cavity (102 a-1) is formed between the second metal shell (102 a) and the nut clamping ring (102 b), a first baffle (102 a-2) is fixedly mounted in the middle of the limiting cavity (102 a-1), and a second baffle (102 a-3) is fixedly arranged at the bottom of the limiting cavity (102 a-1).
7. A hydraulic tensioner as claimed in claim 6, characterized in that: the middle of the nut clamping ring (102 b) is provided with a first connecting gear (102 b-1), the inner side of the bottom end of the nut clamping ring (102 b) is provided with a nut clamping groove (102 b-2), and the nut clamping groove (102 b-2) is structurally matched with the connecting nut (104 b).
8. A hydraulic tensioner as claimed in any one of claims 1 to 4, 6 and 7 for lifting water turbines, characterized in that: the adjusting assembly (103) comprises an adjusting shell (103 a), a crank (103 b) is arranged at the top of the adjusting shell (103 a), and a hybrid stepping motor (103 c) is further connected to the bottom of the adjusting shell (103 a).
9. A hydraulic tensioner as claimed in claim 8, wherein: the inner part of the adjusting shell (103 a) is movably connected with a first rotating shaft (103 a-1), two ends of the first rotating shaft (103 a-1) are fixedly connected with a crank (103 b) and a hybrid stepping motor (103 c) respectively, and a second connecting gear (103 a-2) is fixedly mounted outside the first rotating shaft (103 a-1).
10. A hydraulic tensioner as claimed in claim 9, wherein: a third connecting gear (103 a-3) is arranged on one side of the second connecting gear (103 a-2), the third connecting gear (103 a-3) is in meshed connection with the second connecting gear (103 a-2) and the first connecting gear (102 b-1), and a second rotating shaft (103 a-4) is further arranged in the middle of the third connecting gear (103 a-3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221965130.5U CN218342006U (en) | 2022-07-28 | 2022-07-28 | Hydraulic stretcher for lifting water turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221965130.5U CN218342006U (en) | 2022-07-28 | 2022-07-28 | Hydraulic stretcher for lifting water turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218342006U true CN218342006U (en) | 2023-01-20 |
Family
ID=84914434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221965130.5U Active CN218342006U (en) | 2022-07-28 | 2022-07-28 | Hydraulic stretcher for lifting water turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218342006U (en) |
-
2022
- 2022-07-28 CN CN202221965130.5U patent/CN218342006U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108194285B (en) | Offshore wind power impeller high-altitude dismounting method and gravity center adjustable tool for dismounting method thereof | |
| CN212076229U (en) | Large-scale tower machine bilateral hydraulic jacking system | |
| CN105545612B (en) | Large-scale Wind Turbines and its blade installation structure | |
| CN218342006U (en) | Hydraulic stretcher for lifting water turbine | |
| CN201215117Y (en) | Single stage single-sucking centrifugal pump | |
| CN211889717U (en) | Mounting structure of shaft-to-propeller type runner without turning over | |
| CN209466192U (en) | A kind of Large Type Vertical Motor belt pulley dismounting device | |
| CN110608015A (en) | Wheel shaft type beam energy-saving pumping unit | |
| CN219685386U (en) | Axial-flow type hydroelectric set thrust tile dismouting device | |
| CN219986755U (en) | Novel hydraulic coupler disassembly and assembly integrated device | |
| CN220030055U (en) | Lower guide shoe dismounting tool for small-space operation | |
| CN217458630U (en) | Auxiliary dismounting device for water turbine | |
| CN212553673U (en) | Special tool for disassembling square head of servomotor | |
| CN2577954Y (en) | Impact crusher | |
| CN2217131Y (en) | Shaft of pump with easily assembling function | |
| CN221716802U (en) | Detacher for motor belt pulley | |
| CN201537895U (en) | Upper wheel device of motor pulley | |
| CN213592760U (en) | Device for dismounting thrust collar | |
| CN220283265U (en) | Hoisting guiding device for top cover of hydroelectric generating set | |
| CN219005895U (en) | Frock is dismantled with turning arm to hydraulic turbine stator axle | |
| CN215804920U (en) | Piston rod pulling tool for assembling rotating wheel of axial-flow type plug structure | |
| CN219485538U (en) | Screw pump stator disassembly and assembly tool | |
| CN220921447U (en) | Air brake dismounting tool of shear type supporting structure | |
| CN214464628U (en) | Water turbine guide vane sleeve internal bearing bush mounting device | |
| CN210790821U (en) | Rapid dismounting tool for middle transmission gear bushing of diesel engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |