CN112027889A - Building material lifting device for super high-rise building construction - Google Patents
Building material lifting device for super high-rise building construction Download PDFInfo
- Publication number
- CN112027889A CN112027889A CN202010910405.4A CN202010910405A CN112027889A CN 112027889 A CN112027889 A CN 112027889A CN 202010910405 A CN202010910405 A CN 202010910405A CN 112027889 A CN112027889 A CN 112027889A
- Authority
- CN
- China
- Prior art keywords
- block
- lifting device
- limiting
- wire rope
- groove
- 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.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
- B66C1/16—Slings with load-engaging platforms or frameworks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/02—Driving gear
- B66D1/12—Driving gear incorporating electric motors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/28—Other constructional details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/54—Safety gear
Abstract
The invention discloses a building material lifting device for super high-rise building construction, which comprises support plates arranged at left and right intervals, wherein mounting plates are symmetrically arranged on the left and right of the support plates, limiting fixing devices and driving devices are respectively arranged on the mounting plates on two sides, and a winding drum is arranged between the two mounting plates through a connecting shaft; a traction steel wire rope is wound on the surface of the winding cylinder, a connecting block is embedded at the lower end of the traction steel wire rope, and the connecting block is provided with an installation block through an installation and disassembly device; and a connecting steel wire rope is embedded below the mounting block, and the lower end of the connecting steel wire rope is connected with a hopper. The invention can solve the problems that the winding drum of the steel wire rope of the existing material lifting device lacks a certain self-locking function, the stability of the self-locking capability of the motor is poor when the quality of the lifted material is high, the hopper of the existing material lifting device is generally directly connected with the lifting device through the steel wire rope, the hopper and the steel wire rope are mostly in fixed connection, and the hopper is inconvenient to disassemble subsequently.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a building material lifting device for super high-rise building construction.
Background
In high-rise building construction operation, the required material of aerial work is carried through material hoisting device mostly, pulls the hopper through wire rope and goes up and down, but current material hoisting device still has some weak points when using:
1. the winding drum of the steel wire rope of the existing material lifting device lacks a certain self-locking function, and the stability of the material lifting device is poor only by depending on the self-locking capability of a motor when the material lifting quality is high, so that the use safety of the device is reduced;
2. its hopper of current material lifting device generally is connected through wire rope directness and hoisting device, is mostly fixed connection between hopper and the wire rope, and is follow-up comparatively inconvenient when dismantling the hopper, and the follow-up material in the hopper of being not convenient for carries out certain transport on the plane, has reduced the use convenience of device.
To solve the above problems, innovative design is urgently needed on the basis of the original existing material lifting device.
Disclosure of Invention
The invention aims to provide a building material lifting device for super high-rise building construction, and aims to solve the problems that a steel wire rope winding cylinder of the existing material lifting device in the market in the prior art is lack of a certain self-locking function, the stability of the existing material lifting device is poor only by the self-locking capability of a motor when the quality of the lifted material is high, a hopper of the existing material lifting device is generally directly connected with the lifting device through the steel wire rope, the hopper and the steel wire rope are mostly fixedly connected, and the hopper is inconvenient to disassemble subsequently.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention relates to a building material lifting device for super high-rise building construction, which comprises support plates arranged at left and right intervals, wherein mounting plates are symmetrically welded on the left and right of the support plates, a limiting and fixing device is mounted on the mounting plate on one side, a driving device is mounted on the mounting plate on the other side, a winding cylinder is mounted between the two mounting plates through a connecting shaft, and the connecting shaft is connected with the driving device; a traction steel wire rope is wound on the surface of the winding cylinder, a connecting block is embedded at the lower end of the traction steel wire rope, and the connecting block is movably provided with an installation block through an installation and disassembly device; and a connecting steel wire rope is embedded below the mounting block, and the lower end of the connecting steel wire rope is connected with a hopper.
As a further improvement of the technical scheme of the invention, the left end and the right end of the winding cylinder are both embedded with limiting discs.
As a further improvement of the technical scheme of the invention, the limiting and fixing device comprises a through hole formed in the lower part of the mounting plate and a movable rod penetrating through the through hole; the diameter of the openings at the two ends of the through hole is smaller than the diameter of the openings in the through hole; the movable rod is connected with the mounting plate in a sliding manner, one end of the movable rod is positioned in the through hole and is fixedly provided with a limiting block, and the other end of the movable rod extends out of the through hole; the winding drum is provided with a plurality of limiting grooves along the circumference at the position corresponding to the movable rod on the limiting disc close to one side of the limiting fixing device, and each limiting groove is matched with the movable rod and can form a clamping structure with the movable rod under the action of external force.
As a further improvement of the technical scheme of the invention, a baffle is embedded on one side of the movable rod, which is far away from the mounting plate, and a first return spring is arranged between the baffle and the mounting plate; the limiting block is a metal plate; and an electromagnet is arranged on the outer side of the through hole.
As a further improvement of the technical scheme of the invention, the driving device comprises a mounting frame arranged on the outer side of the mounting plate, and a driving motor and a speed reducer are fixedly arranged on the mounting frame; the output end of the driving motor is connected with the input end of the speed reducer, and the output shaft of the speed reducer penetrates through the mounting plate and is connected with the connecting shaft.
As a further improvement of the technical scheme of the invention, the mounting and dismounting device comprises a connecting groove vertically formed in the mounting block, the upper part of the connecting groove is opened, the inner wall of the connecting groove is provided with a positioning groove, the bottom of the connecting groove is provided with a second return spring, and the top of the second return spring is provided with a push plate; the connecting block is slidably arranged in the connecting groove, the left side and the right side of the connecting block are respectively provided with a limiting block groove, and a limiting block is arranged in the limiting block groove; the upper surface and the lower surface of the front end of the limiting block are respectively in a horizontal structure and an inclined structure, the end extends into the positioning groove and forms a clamping structure with the positioning groove, the other end is positioned in the limiting block groove and is provided with a limiting block baffle, and a third reset spring is arranged between the limiting block baffle and the bottom of the limiting block groove; the inner wall of the positioning groove is vertically embedded with a fixed rod, the surface of the fixed rod is embedded with a movable block which can slide up and down on the fixed rod, a fourth reset spring is arranged between the upper end of the movable block and the inner wall of the positioning groove, and the lower part of the movable block is provided with an inward inclined structure.
As a further improvement of the technical scheme of the invention, the upper and lower surfaces of the front end of the limiting block extending into the positioning groove are in arc transition.
As a further improvement of the technical scheme of the invention, the upper surface of the supporting plate is in threaded connection with a fixing bolt.
Compared with the prior art, the building material lifting device for super high-rise building construction has the following beneficial effects:
1. the winding drum is provided with the movable rod and the limiting groove, the driving motor is powered off and the electromagnet can be powered off at the same time through the series circuit connection of the electromagnet and the driving motor, and the movable rod can be clamped with the limiting disc through the limiting groove under the action of the first reset spring, so that the winding drum is locked, the winding drum is kept stable, and the practicability of the winding drum is improved;
2. be provided with connecting block and stopper, hopper accessible installation piece and connecting block are connected, and follow-up when dismantling the hopper only need press down the connecting block relieve the stopper and spread groove between the block can, convenient and fast improves the use convenience of device.
Drawings
FIG. 1 is a schematic view of the main sectional structure of the present invention;
FIG. 2 is a schematic front view of the present invention;
FIG. 3 is a schematic top view of the present invention;
FIG. 4 is a schematic diagram of a side view of a limiting groove according to the present invention;
FIG. 5 is an enlarged view of the structure at A in FIG. 1 according to the present invention.
In the figure: 1. a support plate; 2. fixing the bolt; 3. mounting a plate; 4. a drive motor; 5. a speed reducer; 6. a mounting frame; 7. a connecting shaft; 8. a winding drum; 801. a limiting disc; 802. a limiting groove; 9. a movable rod; 901. a baffle plate; 902. a first return spring; 903. a metal plate; 904. a through hole; 10. an electromagnet; 11. a traction wire rope; 12. connecting blocks; 13. mounting blocks; 14. connecting a steel wire rope; 15. a hopper; 16. connecting grooves; 1601. a second return spring; 1602. pushing the plate; 17. a limiting block; 1701. a third return spring; 1702. a limiting block baffle; 1703. a limiting block groove; 18. positioning a groove; 1801. fixing the rod; 1802. a movable block; 1803. and a fourth return spring.
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 5, the building material lifting device for super high-rise building construction of the present invention comprises a supporting plate 1 arranged at a left-right interval, mounting plates 3 are welded on the supporting plate 1 in a left-right symmetrical manner, wherein a limiting fixing device is mounted on the mounting plate 3 on one side, a driving device is mounted on the mounting plate 3 on the other side, a winding drum 8 is mounted between the two mounting plates 3 through a connecting shaft 7, and the connecting shaft 7 is connected with the driving device; a traction steel wire rope 11 is wound on the surface of the winding cylinder 8, a connecting block 12 is embedded at the lower end of the traction steel wire rope 11, and an installation block 13 is movably arranged on the connecting block 12 through an installation and disassembly device; a connecting steel wire rope 14 is embedded below the mounting block 13, and the lower end of the connecting steel wire rope 14 is connected with a hopper 15.
In this embodiment, the left and right ends of the winding drum 8 are both embedded with a limiting disc 801.
In this embodiment, the limiting and fixing device includes a through hole 904 formed at the lower part of the mounting plate 3 and a movable rod 9 penetrating the through hole 904; the diameter of the opening at the two ends of the through hole 904 is smaller than the inner diameter of the through hole; the movable rod 9 is connected with the mounting plate 3 in a sliding manner, one end of the movable rod is positioned in the through hole 904 and is fixedly provided with a limiting block 903, and the other end of the movable rod extends out of the through hole 904; the winding drum 8 is provided with a plurality of limiting grooves 802 evenly along the corresponding positions of the circumference and the movable rod 9 on the limiting disc 801 close to one side of the limiting fixing device, each limiting groove 802 is matched with the movable rod 9 and can form a clamping structure with the movable rod 9 under the action of external force, and the winding drum 8 is limited through the matching of the limiting grooves 802 and the movable rod 9, so that the winding drum 8 is kept stable.
In this embodiment, a baffle 901 is embedded in one side of the movable rod 9 away from the mounting plate 3, and a first return spring 902 is arranged between the baffle 901 and the mounting plate 3; the limiting block 903 is a metal plate; the electromagnet 10 is arranged outside the through hole 904, and the structural design can facilitate the subsequent control of the position of the movable rod 9 through the electromagnet 10, so that the movable rod is matched with the work of the driving motor 4.
In this embodiment, the driving device includes an installation frame 6 disposed outside the installation plate 3, and the installation frame 6 is fixedly provided with a driving motor 4 and a speed reducer 5; the output end of the driving motor 4 is connected with the input end of the speed reducer 5, and the output shaft of the speed reducer 5 penetrates through the mounting plate 3 and is connected with the connecting shaft 7.
In this embodiment, the mounting and dismounting device includes a connecting groove 16 vertically formed in the mounting block 13, the connecting groove 16 has an opening at the upper part and a positioning groove 18 formed in the inner wall, a second return spring 1062 is provided at the bottom, and a push plate 1602 is provided at the top of the second return spring 1602; the connecting block 12 is slidably arranged in the connecting groove 16, the left side and the right side of the connecting block are respectively provided with a limiting block groove 1703, and a limiting block 17 is arranged in the limiting block groove 1703; the upper and lower surfaces of the front end of the stopper 17 are respectively in a horizontal and inclined structure, the end extends into the positioning groove 18 and forms a clamping structure with the positioning groove 18, the other end is positioned in the stopper groove 1703 and is provided with a stopper baffle 1702, and a third return spring 1701 is arranged between the stopper baffle 1702 and the bottom of the stopper groove 1703; a fixed rod 1801 is vertically embedded in the inner wall of the positioning groove 18, a movable block 1802 capable of sliding up and down on the fixed rod 1801 is embedded in the surface of the fixed rod 1801, a fourth return spring 1803 is arranged between the upper end of the movable block 1802 and the inner wall of the positioning groove 18, and an inward inclined structure is arranged at the lower part of the movable block 1802. This structural design is very convenient to be connected connecting block 12 and installation piece 13 through connecting groove 16, and accessible stopper 17 and constant head tank 18's connection is fixed connecting block 12 position in installation piece 13 during the connection, and follow-up removal that can pass through movable block 1802 simultaneously relieves stopper 17 and constant head tank 18's connection
In this embodiment, the upper and lower surfaces of the front end of the limiting block 17 extending into the positioning groove 18 are in arc transition.
In this embodiment, the upper surface of the supporting plate 1 is connected with the fixing bolt 2 through threads, so that the supporting plate 1 can be conveniently installed on a working surface.
The working principle is as follows: when the building material lifting device for super high-rise building construction is used, firstly, as shown in fig. 1, fig. 2 and fig. 3, when the device is used, a supporting plate 1 can be installed and fixed on a stable working surface through a fixing bolt 2, then a winding drum 8 is driven by a driving motor 4 to lift a hopper 15 through a traction steel wire rope 11, an electromagnet 10 and the driving motor 4 are connected in a series circuit, as shown in the attached drawing, when the driving motor 4 is started, the electromagnet 10 is electrified to generate magnetic force, a metal plate 903 and a movable rod 9 are attracted through the electromagnet 10, the connection between the movable rod 9 and a limiting groove 802 is released, so that the winding drum 8 can rotate, after the driving motor 4 is turned off, the electromagnet 10 is powered off, the movable rod 9 extends out under the matching of a first return spring 902 and a baffle plate 901 to be connected with the limiting groove 802 again to position a limiting disc 801, therefore, the winding drum 8 is kept stable, the winding drum 8 is prevented from rotating under the gravity action of the hopper 15 when the power is off, and the safety of the device is improved;
after the hopper 15 is moved to a proper position, the hopper 15 can be detached from the connecting block 12, so that the materials can be conveniently transferred on a plane or the device can be conveniently stored subsequently, as shown in the attached drawings, when the hopper 15 needs to be detached, only the connecting block 12 needs to be pressed into the mounting block 13, so that the connecting block 12 moves in the connecting groove 16, the second return spring 1601 is pressed through the push plate 1602, the limiting block 17 is pressed by the movable block 1802 to contract, when the limiting block 17 is located below the movable block 1802, the connecting block 12 moves upwards under the action of the second return spring 1601, the limiting block 17 drives the movable block 1802 to move along the fixed rod 1801, when the top surface of the movable block coincides with the surface of the positioning groove 18, the connecting block 12 continues to move upwards, and the limiting block 17 contracts along the inclined surface of the movable block 1802, until the limiting block 17 is separated from the positioning groove 18, the movable block 1802 is reset under the action of the fourth reset spring 1803, and meanwhile, the connecting block 12 is separated from the connecting block 13, so that the hopper 15 is disassembled.
Nothing in this specification is prior art to the skilled artisan.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (8)
1. A building material lifting device for super high-rise building construction is characterized by comprising support plates (1) which are arranged at left and right intervals, wherein mounting plates (3) are symmetrically welded on the support plates (1) left and right, a limiting fixing device is mounted on the mounting plate (3) on one side, a driving device is mounted on the mounting plate (3) on the other side, a winding cylinder (8) is mounted between the two mounting plates (3) through a connecting shaft (7), and the connecting shaft (7) is connected with the driving device; a traction steel wire rope (11) is wound on the surface of the winding cylinder (8), a connecting block (12) is embedded at the lower end of the traction steel wire rope (11), and an installation block (13) is movably arranged on the connecting block (12) through an installation and disassembly device; and a connecting steel wire rope (14) is embedded below the mounting block (13), and the lower end of the connecting steel wire rope (14) is connected with a hopper (15).
2. The building material lifting device for super high-rise building construction as claimed in claim 1, wherein the winding drum (8) is embedded with limiting discs (801) at both left and right ends.
3. The building material lifting device for super high-rise building construction as claimed in claim 2, wherein the limit fixing device comprises a through hole (904) formed at the lower part of the mounting plate (3) and a movable rod (9) penetrating the through hole (904); the diameter of the openings at the two ends of the through hole (904) is smaller than the inner diameter of the through hole; the movable rod (9) is connected with the mounting plate (3) in a sliding manner, one end of the movable rod is positioned in the through hole (904) and is fixedly provided with a limiting block (903), and the other end of the movable rod extends out of the through hole (904); a plurality of limiting grooves (802) are uniformly arranged on a limiting disc (801) on one side, close to the limiting fixing device, of the winding drum (8) along the circumference and at the position corresponding to the movable rod (9), and each limiting groove (802) is matched with the movable rod (9) and can form a clamping structure with the movable rod (9) under the action of external force.
4. The building material lifting device for the super high-rise building construction is characterized in that a baffle plate (901) is embedded on one side of the movable rod (9) far away from the mounting plate (3), and a first return spring (902) is arranged between the baffle plate (901) and the mounting plate (3); the limiting block (903) is a metal plate; and an electromagnet (10) is arranged on the outer side of the through hole (904).
5. The building material lifting device for super high-rise building construction according to any one of claims 1 to 4, wherein the driving device comprises a mounting frame (6) arranged outside the mounting plate (3), and a driving motor (4) and a speed reducer (5) are fixedly arranged on the mounting frame (6); the output end of the driving motor (4) is connected with the input end of the speed reducer (5), and the output shaft of the speed reducer (5) penetrates through the mounting plate (3) and is connected with the connecting shaft (7).
6. The building material lifting device for super high-rise building construction as claimed in claim 5, wherein the mounting and dismounting device comprises a connecting groove (16) vertically opened in the inside of the mounting block (13), the connecting groove (16) is opened at the upper part and opened at the inner wall with a positioning groove (18), the bottom is provided with a second return spring (1062), the top of the second return spring (1602) is provided with a push plate (1602); the connecting block (12) is slidably arranged in the connecting groove (16), the left side and the right side of the connecting block are respectively provided with a limiting block groove (1703), and a limiting block (17) is arranged in the limiting block groove (1703); the upper surface and the lower surface of the front end of the limiting block (17) are respectively in a horizontal structure and an inclined structure, the end extends into the positioning groove (18) and forms a clamping structure with the positioning groove (18), the other end is positioned in the limiting block groove (1703) and is provided with a limiting block baffle (1702), and a third reset spring (1701) is arranged between the limiting block baffle (1702) and the bottom of the limiting block groove (1703); the inner wall of the positioning groove (18) is vertically embedded with a fixing rod (1801), the surface of the fixing rod (1801) is embedded with a movable block (1802) which can slide up and down on the fixing rod (1801), a fourth reset spring (1803) is arranged between the upper end of the movable block (1802) and the inner wall of the positioning groove (18), and the lower part of the movable block is provided with an inward inclined structure.
7. The building material lifting device for super high-rise building construction as claimed in claim 1, wherein the upper and lower surfaces of the front end of the limiting block (17) extending into the positioning groove (18) are in arc transition.
8. The building material lifting device for super high-rise building construction as claimed in claim 1, wherein the upper surface of the supporting plate (1) is screw-connected with a fixing bolt (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010910405.4A CN112027889A (en) | 2020-09-02 | 2020-09-02 | Building material lifting device for super high-rise building construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010910405.4A CN112027889A (en) | 2020-09-02 | 2020-09-02 | Building material lifting device for super high-rise building construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112027889A true CN112027889A (en) | 2020-12-04 |
Family
ID=73591236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010910405.4A Pending CN112027889A (en) | 2020-09-02 | 2020-09-02 | Building material lifting device for super high-rise building construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112027889A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208561521U (en) * | 2018-07-17 | 2019-03-01 | 漳州龙文区卡慧仑信息技术有限公司 | A kind of rolling open and close machine that safety coefficient is high |
| US20190135594A1 (en) * | 2017-11-06 | 2019-05-09 | Ramsey Winch Company | Electric Winch Control Module with Magnetic Flux Shield |
| CN110770159A (en) * | 2017-10-27 | 2020-02-07 | 力移特科有限公司 | Lifting device for high-altitude installation equipment and method for controlling lifting device |
| CN210735903U (en) * | 2019-10-24 | 2020-06-12 | 李皖林 | Building construction hoisting device |
| CN211001437U (en) * | 2019-11-25 | 2020-07-14 | 东莞信农科技有限公司 | Freight trolley capable of being assembled quickly |
-
2020
- 2020-09-02 CN CN202010910405.4A patent/CN112027889A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110770159A (en) * | 2017-10-27 | 2020-02-07 | 力移特科有限公司 | Lifting device for high-altitude installation equipment and method for controlling lifting device |
| US20190135594A1 (en) * | 2017-11-06 | 2019-05-09 | Ramsey Winch Company | Electric Winch Control Module with Magnetic Flux Shield |
| CN208561521U (en) * | 2018-07-17 | 2019-03-01 | 漳州龙文区卡慧仑信息技术有限公司 | A kind of rolling open and close machine that safety coefficient is high |
| CN210735903U (en) * | 2019-10-24 | 2020-06-12 | 李皖林 | Building construction hoisting device |
| CN211001437U (en) * | 2019-11-25 | 2020-07-14 | 东莞信农科技有限公司 | Freight trolley capable of being assembled quickly |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110921498A (en) | Quick lifting appliance for concrete precast box girder | |
| CN104909261A (en) | Vertical hoisting clamp for heavy barrel | |
| CN112027889A (en) | Building material lifting device for super high-rise building construction | |
| CN210834080U (en) | Buffer testing device | |
| CN209797313U (en) | Electromechanical hoist and mount auxiliary device of building | |
| CN110745712A (en) | Lifting device for electric hoist | |
| US3064324A (en) | Crane apparatus | |
| CN114803822A (en) | Lifting appliance for variable cross-section steel-concrete composite beam | |
| CN210885022U (en) | Building material lifting device | |
| CN211871183U (en) | A hoisting device for construction | |
| CN203602325U (en) | Aloft working platform | |
| CN217996279U (en) | Pay-off for electric power construction | |
| CN220845233U (en) | Lifting mechanism of tower crane | |
| CN213738352U (en) | Magnetic force hoist engine | |
| CN220642432U (en) | Elevator with protection function | |
| CN211595720U (en) | Jaw crusher pinion rack quenching hoist | |
| CN110775800A (en) | Novel gantry magnetic crane feeding table | |
| CN212356367U (en) | Electric hoist control device | |
| CN214935173U (en) | Magnetic coupling controlled elevator device | |
| CN215886005U (en) | Hoist and mount connection structure suitable for building prefab | |
| CN210825167U (en) | Groove head plate lifting machine for electric copper plate inspection | |
| CN217458494U (en) | Hoisting mechanism for assembling full-cabin phototherapy instrument | |
| CN219489448U (en) | Winding engine | |
| CN214527748U (en) | Electric single-beam crane for partial suspension | |
| CN212151423U (en) | Auxiliary maintenance device for machining center based on rubber production |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201204 |