CN112555631A - Mine machinery lifting self-locking device - Google Patents
Mine machinery lifting self-locking device Download PDFInfo
- Publication number
- CN112555631A CN112555631A CN202011387021.5A CN202011387021A CN112555631A CN 112555631 A CN112555631 A CN 112555631A CN 202011387021 A CN202011387021 A CN 202011387021A CN 112555631 A CN112555631 A CN 112555631A
- Authority
- CN
- China
- Prior art keywords
- screw rod
- bidirectional screw
- base
- rod
- locking 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.)
- Withdrawn
Links
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 57
- 238000005065 mining Methods 0.000 claims abstract description 16
- 238000009434 installation Methods 0.000 claims description 11
- 238000013016 damping Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 description 12
- 230000001681 protective effect Effects 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Images
Classifications
-
- 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
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/20—Undercarriages with or without wheels
- F16M11/24—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other
- F16M11/38—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other by folding, e.g. pivoting or scissors tong mechanisms
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal
- F16F15/085—Use of both rubber and metal springs
-
- 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
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M2200/00—Details of stands or supports
- F16M2200/02—Locking means
- F16M2200/025—Locking means for translational movement
- F16M2200/028—Locking means for translational movement by positive interaction, e.g. male-female connections
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The invention belongs to the field of mining machinery, and discloses a lifting self-locking device for mining machinery, which comprises a base, wherein the upper end of the base is provided with a mounting groove, the left end of the base is fixedly provided with a driving motor, an output shaft of the driving motor is fixedly connected with a second bidirectional screw rod, the output shaft of the driving motor penetrates through the base and is fixedly connected with the second bidirectional screw rod, the right end of the second bidirectional screw rod is fixedly connected with a first bidirectional screw rod through a coupler, the right end of the first bidirectional screw rod is rotatably connected with the base through a bearing, the first bidirectional screw rod and the second bidirectional screw rod are both positioned in the mounting groove, and two nut blocks are symmetrically and threadedly mounted on the first bidirectional screw rod and the second bidirectional screw rod.
Description
Technical Field
The invention relates to the technical field of mining machinery, in particular to a lifting self-locking device of the mining machinery.
Background
Mine machinery goes up and down self-lock device, what the effect lies in having the lift support on can realizing the mining resources exploitation process, and the technical structure has the effect of improving safety and detection control operation lift, but current elevating gear auto-lock effect is poor, and the protection effect is poor, often can take place structural failure and lead to the lifter plate shock fall, leads to the machinery to fall and handsome ruins, and then provides a mine machinery goes up and down self-lock device.
Disclosure of Invention
The invention provides a mining machinery lifting self-locking device, which solves the problems in the background technology.
In order to achieve the purpose, the invention adopts the following technical scheme:
a mining machinery lifting self-locking device comprises a base, wherein an installation groove is formed in the upper end of the base, a driving motor is fixedly installed at the left end of the base, a second bidirectional screw rod is fixedly connected to an output shaft of the driving motor, an output shaft of the driving motor penetrates through the base and is fixedly connected with the second bidirectional screw rod, a first bidirectional screw rod is fixedly connected to the right end of the second bidirectional screw rod through a coupler, the right end of the first bidirectional screw rod is rotatably connected with the base through a bearing, the first bidirectional screw rod and the second bidirectional screw rod are both positioned in the installation groove, two nut blocks are symmetrically and threadedly installed on the first bidirectional screw rod and the second bidirectional screw rod, a first hinge rod and a second hinge rod are respectively and hingedly installed at the upper ends of the two nut blocks on the first bidirectional screw rod and the two nut blocks on the second bidirectional screw rod, the first hinge rod on the same side of the coupler is rotatably connected with the second hinge rod, the first hinged rod and the second hinged rod are both hinged and arranged at the lower end of the supporting plate, a spongy cushion is fixedly arranged at the upper end of the supporting plate, a first connecting plate is fixedly arranged in the middle of the lower end of the supporting plate, a second connecting plate is sleeved at the bottom of the first connecting plate in a sliding manner along the vertical direction, the lower end of the second connecting plate is fixedly arranged on the upper end surface of the base, two racks are symmetrically embedded and fixedly arranged at the left end and the right end of the first connecting plate, one ends of the two racks, which are far away from each other, are respectively engaged with a gear, the two gears are respectively fixedly sleeved on two mounting screw rods, the front ends of the two mounting screw rods respectively penetrate through the two fixed mounting plates, and extends to the front side of the fixed mounting plates, the lower ends of the two fixed mounting plates are fixedly arranged at the upper end of the base, and the mounting screw is rotatably connected with the fixed mounting plate through a bearing, and a locking nut is sleeved on the mounting screw at a position on the front side of the fixed mounting plate through a thread.
Preferably, two nut blocks that are located on the first bidirectional screw rod and two nut block lower ends that are located on the second bidirectional screw rod are all fixedly mounted with guide rods, and the guide rod lower ends are all connected with the base along the horizontal direction in a sliding manner through guide sliding grooves.
Preferably, the outer end of the locking nut is fixedly provided with a twist handle.
Preferably, two first protection boards are symmetrically and fixedly mounted at the lower end of the supporting plate, the first hinge rod and the second hinge rod are located between the two first protection boards, the outer end of the bottom of the first protection board is movably sleeved with a second protection board, the outer end of the bottom of the first protection board is fixedly mounted on the base, the second protection board is fixedly mounted at the upper end of the base, a second rubber pad is fixedly mounted at the bottom inside the second protection board, a protection spring is fixedly mounted at the upper end of the second rubber pad, and a first rubber pad is fixedly mounted at the upper end of the protection spring.
Preferably, the lower end of the base is fixedly provided with a damping bottom plate.
The invention has the beneficial effects that: the height of the supporting plate can be conveniently adjusted by arranging the second protective plate, the first hinge rod, the first bidirectional screw rod, the nut block, the guide rod, the damping bottom plate, the guide sliding block, the guide sliding groove, the coupler, the base, the driving motor and the like, and the adjusted supporting plate can be automatically locked; the first connecting plate, the second connecting plate, the fixed mounting plate, the gear, the mounting screw and the like are arranged, so that the adjusted supporting plate can be further locked and fixed conveniently, and the fixing effect is better; the first protection plate, the second protection plate, the first rubber pad, the protection spring, the second rubber pad and the like are arranged, so that the support plate can be protected in a buffering mode when falling down rapidly, and the safety of the support plate is improved. The invention has the advantages of good lifting adjustment effect, good self-locking effect, good protection effect, high safety and high practicability.
Drawings
Fig. 1 is a schematic structural diagram of a mining machine lifting self-locking device provided by the invention.
Fig. 2 is a cross-sectional view of a second protection plate in the mining machine lifting self-locking device provided by the invention.
Fig. 3 is a cross-sectional view of a second connecting plate in the mining machine lifting self-locking device provided by the invention.
Fig. 4 is an enlarged view of a point a in fig. 1.
Reference numbers in the figures: the novel vibration damping device comprises a supporting plate 1, a first protective plate 2, a second protective plate 3, a first hinge rod 4, a first bidirectional screw rod 5, a nut block 6, a guide rod 7, a damping bottom plate 8, a guide sliding block 9, a guide sliding groove 10, a coupler 11, a base 12, a driving motor 13, a first connecting plate 14, a second connecting plate 15, a fixed mounting plate 16, a gear 17, a second hinge rod 18, a sponge pad 19, a pin shaft 20, a mounting groove 21, a first rubber pad 22, a protective spring 23, a second rubber pad 24, a mounting screw rod 25, a locking nut 26, a torsion handle 27, a second bidirectional screw rod 28 and a rack 29.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-4, a mining machinery lifting self-locking device comprises a base 12, an installation groove 21 is formed in the upper end of the base 12, a driving motor 13 is fixedly installed at the left end of the base 12, an output shaft of the driving motor 13 is fixedly connected with a second bidirectional screw rod 28, an output shaft of the driving motor 13 penetrates through the base 12 and is fixedly connected with the second bidirectional screw rod 28, a first bidirectional screw rod 5 is fixedly connected to the right end of the second bidirectional screw rod 28 through a coupler 11, the right end of the first bidirectional screw rod 5 is rotatably connected with the base 12 through a bearing, the first bidirectional screw rod 5 and the second bidirectional screw rod 28 are both located in the installation groove 21, two nut blocks 6 are symmetrically installed on the first bidirectional screw rod 5 and the second bidirectional screw rod 28 in a threaded mode, a first hinge rod 4, a second hinge rod 4 and a second hinge rod 28 are respectively installed at the upper ends of the two nut blocks 6 on, A second hinge rod 18, a first hinge rod 4 positioned on the same side of the coupler 11 is rotatably connected with the second hinge rod 18 through a pin shaft 20, the first hinge rod 4 and the second hinge rod 18 are both hinged and installed at the lower end of a support plate 1, a sponge pad 19 is fixedly arranged at the upper end of the support plate 1, a first connecting plate 14 is fixedly installed at the middle position of the lower end of the support plate 1, a second connecting plate 15 is slidably sleeved at the bottom of the first connecting plate 14 along the vertical direction, the lower end of the second connecting plate 15 is fixedly installed at the upper end surface of a base 12, two racks 29 are symmetrically embedded and fixedly installed at the left end and the right end of the first connecting plate 14, gears 17 are respectively engaged at the ends of the two racks 29 far away from each other, the two gears 17 are respectively fixedly sleeved on two installation screw rods 25, the front ends of the two installation screw rods 25 respectively penetrate through the two fixed installation plates 16, and the mounting screw 25 is rotatably connected with the fixed mounting plate 16 through a bearing, and a locking nut 26 is sleeved on the mounting screw 25 at the front side of the fixed mounting plate 16 through a thread.
In this embodiment, the lower ends of the two nut blocks 6 on the first bidirectional screw 5 and the two nut blocks 6 on the second bidirectional screw 28 are both fixedly provided with the guide rod 7, and the lower end of the guide rod 7 is connected with the base 12 in a sliding manner along the horizontal direction through the guide chute 10.
The outer end of the lock nut 26 is fixedly provided with a twist handle 27, and the lock nut 26 can be conveniently rotated through the design.
The two first protection plates 2 are symmetrically and fixedly mounted at the lower end of the supporting plate 1, the first hinge rod 4 and the second hinge rod 18 are located between the two first protection plates 2, the second protection plates 3 are movably sleeved at the outer ends of the bottoms of the two first protection plates 2, the two second protection plates 3 are fixedly mounted at the upper end of the base 12, the second rubber pad 24 is fixedly mounted at the bottom end inside the second protection plates 3, the protection spring 23 is fixedly mounted at the upper end of the second rubber pad 24, and the first rubber pad 22 is fixedly mounted at the upper end of the protection spring 23.
The lower end of the base 12 is fixedly provided with the damping bottom plate 8, and the damping and buffering effects of the invention can be improved through the design.
Example (b): by starting the driving motor 13, the driving motor 13 works to drive the second bidirectional screw 28 to rotate, the rotating second bidirectional screw 28 can drive the first bidirectional screw 5 to rotate through the coupler 11, the rotating first bidirectional screw 5 and the second bidirectional screw 28 can drive the two nut blocks 6 at the upper end of the two nut blocks to move in opposite directions or in opposite directions, at the moment, the nut blocks 6 drive the guide sliding blocks 9 to slide in the guide sliding grooves 10 through the guide rods 7, and further, the support plate 1 can be driven to move up and down through the first hinge rod 4 and the second hinge rod 18, so as to realize the height adjustment of the support plate 1, after the adjustment is completed, the driving motor 13 is turned off, the driving force for the first bidirectional screw 5 and the second bidirectional screw 28 is stopped, so as to realize the locking of the support plate 1, and when the support plate 1 goes up and down, the first connecting plate 14 can be driven to move up and down, and the first connecting, when the gear 17 rotates and is locked, the driving motor 13 is firstly turned off, then the lock nut 26 is screwed through the twisting handle 27, the mounting screw rod 25 is locked, the gear 17 is locked, the first connecting plate 14 is locked, and the supporting plate 1 is locked. The height of the supporting plate 1 can be conveniently adjusted by arranging the second protecting plate 3, the first hinged rod 4, the first bidirectional screw rod 5, the nut block 6, the guide rod 7, the damping bottom plate 8, the guide sliding block 9, the guide sliding groove 10, the coupler 11, the base 12, the driving motor 13 and the like, and the adjusted supporting plate 1 can be automatically locked; the first connecting plate 14, the second connecting plate 15, the fixed mounting plate 16, the gear 17, the mounting screw 25 and the like are arranged, so that the adjusted support plate 1 can be further locked and fixed conveniently, and the fixing effect is better; by arranging the first protection plate 2, the second protection plate 3, the first rubber pad 22, the protection spring 23, the second rubber pad 24 and the like, the support plate 1 can be protected by buffering when the support plate 1 is rapidly descended, and the safety of the invention is further improved. The invention has the advantages of good lifting adjustment effect, good self-locking effect, good protection effect, high safety and high practicability.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. The mining machinery lifting self-locking device comprises a base (12) and is characterized in that a mounting groove (21) is formed in the upper end of the base (12), a driving motor (13) is fixedly mounted at the left end of the base (12), an output shaft of the driving motor (13) is fixedly connected with a second bidirectional screw rod (28), an output shaft of the driving motor (13) penetrates through the base (12) and is fixedly connected with the second bidirectional screw rod (28), the right end of the second bidirectional screw rod (28) is fixedly connected with a first bidirectional screw rod (5) through a coupler (11), the right end of the first bidirectional screw rod (5) is rotatably connected with the base (12) through a bearing, the first bidirectional screw rod (5) and the second bidirectional screw rod (28) are both positioned in the mounting groove (21), and two nut blocks (6) are symmetrically and threadedly mounted on the first bidirectional screw rod (5) and the second bidirectional screw rod (28), two nut blocks (6) positioned on a first bidirectional screw rod (5) and two nut blocks (6) positioned on a second bidirectional screw rod (28) are respectively hinged with a first hinge rod (4) and a second hinge rod (18), the first hinge rod (4) positioned on the same side of a coupler (11) is rotatably connected with the second hinge rod (18) through a pin shaft (20), the first hinge rod (4) and the second hinge rod (18) are both hinged with the lower end of a support plate (1), a sponge pad (19) is fixedly arranged at the upper end of the support plate (1), a first connecting plate (14) is fixedly arranged at the middle position of the lower end of the support plate (1), a second connecting plate (15) is slidably sleeved at the bottom of the first connecting plate (14) along the vertical direction, the lower end of the second connecting plate (15) is fixedly arranged on the upper end face of a base (12), two racks (29) are symmetrically embedded and fixedly arranged at the left end and the right end of the first connecting plate (14), two rack (29) keep away from each other one end and all have engaged gear (17), two gear (17) fixed cover respectively adorns on two installation screw rods (25), two installation screw rod (25) front end runs through respectively in two fixed mounting board (16) to extend to fixed mounting board (16) front side, two the equal fixed mounting of fixed mounting board (16) lower extreme in base (12) upper end, and installation screw rod (25) rotate with fixed mounting board (16) through the bearing and are connected, it is equipped with lock nut (26) just to be located fixed mounting board (16) front side position screw thread cover on installation screw rod (25).
2. The mining machinery lifting self-locking device as claimed in claim 1, wherein the lower ends of the two nut blocks (6) on the first bidirectional screw rod (5) and the two nut blocks (6) on the second bidirectional screw rod (28) are fixedly provided with guide rods (7), and the lower ends of the guide rods (7) are connected with the base (12) in a sliding manner along the horizontal direction through guide chutes (10).
3. The mining machine lifting self-locking device as claimed in claim 1, wherein a twist handle (27) is fixedly arranged at the outer end of the lock nut (26).
4. The mining machinery lifting self-locking device as claimed in claim 1, wherein the lower end of the supporting plate (1) is symmetrically and fixedly provided with two first protection plates (2), the first hinged rod (4) and the second hinged rod (18) are both located between the two first protection plates (2), the outer ends of the bottoms of the first protection plates (2) are movably sleeved with second protection plates (3), the second protection plates (3) are fixedly arranged on the upper end of the base (12), the bottom ends of the interiors of the second protection plates (3) are fixedly provided with second rubber pads (24), the upper ends of the second rubber pads (24) are fixedly provided with protection springs (23), and the upper ends of the protection springs (23) are fixedly provided with first rubber pads (22).
5. The mining machine lifting self-locking device as claimed in claim 1, wherein a damping bottom plate (8) is fixedly arranged at the lower end of the base (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011387021.5A CN112555631A (en) | 2020-12-01 | 2020-12-01 | Mine machinery lifting self-locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011387021.5A CN112555631A (en) | 2020-12-01 | 2020-12-01 | Mine machinery lifting self-locking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112555631A true CN112555631A (en) | 2021-03-26 |
Family
ID=75047084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011387021.5A Withdrawn CN112555631A (en) | 2020-12-01 | 2020-12-01 | Mine machinery lifting self-locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112555631A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113699569A (en) * | 2021-08-23 | 2021-11-26 | 昆山硕凯自动化科技有限公司 | Automatic point plating device and point plating jig thereof |
| CN115013648A (en) * | 2022-05-13 | 2022-09-06 | 山东天元信息技术集团有限公司 | Vehicular geographic information collection system |
-
2020
- 2020-12-01 CN CN202011387021.5A patent/CN112555631A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113699569A (en) * | 2021-08-23 | 2021-11-26 | 昆山硕凯自动化科技有限公司 | Automatic point plating device and point plating jig thereof |
| CN115013648A (en) * | 2022-05-13 | 2022-09-06 | 山东天元信息技术集团有限公司 | Vehicular geographic information collection system |
| CN115013648B (en) * | 2022-05-13 | 2023-12-12 | 山东天元信息技术集团有限公司 | Vehicle-mounted geographic information acquisition device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112555631A (en) | Mine machinery lifting self-locking device | |
| CN213546858U (en) | Power distribution cabinet with stable lifting device | |
| CN215979425U (en) | Support is used in subway tunnel construction | |
| CN111561646A (en) | Even computer lift strutting arrangement of atress | |
| CN214937024U (en) | Roll-over stand for glass cutting machine | |
| CN111791122B (en) | Sleeper grinding machine removes actuating mechanism | |
| CN216881789U (en) | A prevent splashing drilling equipment for spare part production usefulness | |
| CN215364353U (en) | Anti-falling safety device for elevator inspection | |
| CN217023492U (en) | Anti-toppling mechanism of hollow brick placing frame | |
| CN112555592B (en) | Railway signal equipment protector | |
| CN211504750U (en) | Engineering material detects with drilling sampling device | |
| CN210479012U (en) | Unmanned aerial vehicle fuselage levelling device | |
| CN217080087U (en) | Ultra-large showcase door opening mechanism | |
| CN220848614U (en) | Support for building engineering | |
| CN216247160U (en) | Detection mechanism for broken knife detector | |
| CN219431633U (en) | Pile up formula garage door safety device | |
| CN216836740U (en) | Horizontal displacement adjusting mechanism and displacement adjusting device | |
| CN213954871U (en) | Place stable image projector | |
| CN201331642Y (en) | Liquid crystal display lifting base and liquid crystal display therewith | |
| CN220051321U (en) | Base of stainless steel storage tank polishing machine | |
| CN216190709U (en) | Automatic lifting mechanism | |
| CN218951996U (en) | Road bridge support bracket | |
| CN220317206U (en) | Combined metallurgical crane | |
| CN214788789U (en) | Shock absorption device of barrel type shot blasting machine | |
| CN218508235U (en) | Bridge construction support with adjustable height |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210326 |
|
| WW01 | Invention patent application withdrawn after publication |