CN219990987U - Improved lifting device for high-altitude building materials in narrow space - Google Patents
Improved lifting device for high-altitude building materials in narrow space Download PDFInfo
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- CN219990987U CN219990987U CN202320671515.9U CN202320671515U CN219990987U CN 219990987 U CN219990987 U CN 219990987U CN 202320671515 U CN202320671515 U CN 202320671515U CN 219990987 U CN219990987 U CN 219990987U
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Abstract
The utility model discloses an improved lifting device for high-altitude building materials in a narrow space, which comprises: the bottom of the support column (1) is used for being detachably mounted with the support frame beam (8); the rotary bearing mechanism (2) is connected with the top of the support column (1) in a universal rotation way, and is limited and fixed through a limiting piece (3); the telescopic support comprises a telescopic support arm (4), wherein the fixed end of the telescopic support arm (4) is detachably connected with one end of the upper part of the rotary bearing mechanism (2) through an adjustable fastener (5), and a lifting part (6) for extracting building materials is arranged at the free end of the telescopic support arm (4). The utility model can effectively cooperate with floor and roof engineering construction, improves construction building materials, such as construction block lifting efficiency, is convenient and flexible to operate, reduces safety risk, saves labor during use, can effectively control loading, unloading and lifting, and realizes lifting of construction materials in a narrow range.
Description
Technical Field
The utility model relates to a lifting device, in particular to an improved lifting device for high-altitude building materials in a narrow space, which is mainly used for lifting the building materials in the construction of a building aiming at the narrow space, and belongs to the technical field of building construction product assistance.
Background
Generally, glass daylighting tops exist in a plurality of modern buildings and are positioned in the middle of the buildings, large steel beams are required to be installed to meet the bearing of the glass daylighting tops, the hoisting requirements cannot be met by adopting large-scale automobile cranes, and the hoisting radius cannot be covered; because main girder steel span is big, the dead weight is big, when adopting tower crane hoist and mount, hoist and mount weight can't satisfy, if cut girder steel and hoist and mount many times then can not guarantee construction quality, and need set up full hall support scaffold frame and support normal position welding, full hall support scaffold frame height is too big to cause basement roof bearing capacity to not satisfy, need add at the basement and establish the support frame body. The above conventional methods have the following drawbacks and disadvantages:
(1) by adopting a traditional large-sized automobile crane, for the situation that a glass daylighting roof is positioned in the middle of a building, the lifting radius cannot be covered, and the lifting requirement cannot be met;
(2) the tower crane is adopted for hoisting, and the weight of the steel beam is too large to meet the hoisting weight of the tower crane, so that the steel beam is required to be cut and segmented, and the integrity of the steel beam is reduced;
(3) if a full scaffold support frame needs to be erected, the investment of auxiliary materials is large, the construction period is long, and the cost investment is high.
Therefore, it is a key point for solving the above technical problems to develop an improved lifting device for high-altitude building materials in a narrow space, which has strong practicability and high working reliability.
Disclosure of Invention
Aiming at the defects and shortcomings in the background technology, the utility model improves and innovates the defects, and aims to provide the method which can effectively cooperate with floor and roof engineering construction, improve construction building materials such as construction block lifting efficiency, is convenient and flexible to operate, reduces safety risk, saves labor during use, can effectively control loading, unloading and lifting, and realizes lifting of construction materials in a narrow range.
The utility model further aims at simple and reasonable structure, and can furthest reduce the technical problems of high cost and incapability of entering a narrow range for lifting by means of lifting large equipment and the like by adopting a manual or electric hoist matched with a rotating mechanism for lifting construction materials, and is particularly suitable for the conditions of short construction period and narrow space, realizes batch lifting construction materials, saves labor, reduces the labor intensity of operators, improves the construction efficiency, saves transportation lifting cost and can be reused.
In order to solve the problems and achieve the purposes of the utility model, the improved lifting device for the high-altitude building materials in the narrow space is realized by adopting the following design structure and the following technical scheme:
as an improvement of the lifting device for the high-altitude building materials in a narrow space,
comprising the following steps:
the bottom of the support column (1) is used for being detachably mounted with the support frame beam (8);
the rotary bearing mechanism (2) is connected with the top of the support column (1) in a universal rotation way, and is limited and fixed through a limiting piece (3);
the telescopic support comprises a telescopic support arm (4), wherein the fixed end of the telescopic support arm (4) is detachably connected with one end of the upper part of the rotary bearing mechanism (2) through an adjustable fastener (5), and a lifting part (6) for extracting building materials is arranged at the free end of the telescopic support arm (4).
As an improvement of the present utility model, the rotary bearing mechanism (2) includes:
the lower part of the rotary sleeve (21) is used for being connected with the top of the support column (1) in a universal rotation way;
the bearing upright post (22), one end of the bearing upright post (22) is connected with the top of the rotary sleeve (21), and the other end is connected with the bearing cross beam (23);
the bearing cross beam (23), the bearing cross beam (23) is connected with the bearing upright post (22) vertically.
As a further improvement of the utility model, a plurality of adjustable arc-shaped through holes which penetrate through the front surface and the back surface are arranged on the outer extension surface of the lower end of the rotary sleeve (21).
As a further improvement of the utility model, the external extension surface of the lower end of the rotary sleeve (21) is also provided with angle graduation marks for displaying the rotation angle.
As the further improvement of the utility model, a plurality of inclined reinforcing beams (24) are also connected between the bearing upright posts (22) and the bearing cross beams (23), and the inclined reinforcing beams (24) are square steel or triangular plate-shaped body members or the mixture of the two; wherein, the two sides of the bearing beam (23) are also provided with adjustable connecting holes in a pair.
As a still further improvement of the utility model described above, the load-bearing cross member (23) is square steel; the adjustable connecting hole is a bolt hole.
As a still further improvement of the utility model, the supporting telescopic arm (4) is square steel, and two sides of the square steel connecting end are provided with adjustable mounting holes in a penetrating way, and the adjustable mounting holes correspond to the adjustable connecting holes on the bearing cross beam (23); a hanging buckle (41) is connected to the lower portion of the free end of the square steel, and the hanging buckle (41) is used for hanging the lifting piece (6).
As a still further improvement of the above-described utility model, the support column (1) includes:
the support columns (11) are arranged in parallel and opposite to each other, and the bottoms of the support columns (11) are detachably connected with the support frame beams (8) through high-strength bolts;
the support installation piece (12), the support installation piece (12) is arranged at the top of the support upright post (11) and is used for sleeving the rotary sleeve (21) and matching with the rotary sleeve;
a plurality of fastening holes which penetrate through the front surface and the back surface are formed in the outer extension surface of the lower end of the support mounting piece (12), and the fastening holes correspond to the adjustable arc-shaped through holes.
As a still further improvement of the utility model, the utility model further comprises a plurality of reinforcing columns (7), wherein each reinforcing column (7) is obliquely connected to the upper outer side wall of the supporting column (1).
As the utility model is further improved, the fixed end of the reinforcing column (7) is connected with the outer side wall of the upper part of the supporting column (1), the free end of the reinforcing column (7) is provided with a connecting seat, four corners of the connecting seat are provided with connecting holes, and high-strength bolts penetrate through the connecting holes to be detachably connected with the supporting frame beam (8).
The working principle is as follows: an improved lifting device for high-altitude building materials in a narrow space with the design structure needs to be installed for standby before being used.
Before installation, an operator only needs to carry the utility model to a designated construction position to be installed through corresponding carrying equipment or manually.
During installation, an operator only needs to determine the installation position of the support column (1) according to the position of the building material (10), after determining the installation position on the floor (9), the operator fixedly installs the support column (1) on the support frame beam (8) of the floor (9) by adopting a high-strength bolt, meanwhile, the reinforcing column (7) is fixed on the corresponding position of the support frame beam (8) through the high-strength bolt, meanwhile, according to actual lifting requirements, the length of the support telescopic arm (4) is adjusted to a proper length, then an adjustable fastener (5) is adopted to fix the support telescopic arm (4) on a bearing beam (23) of the rotary bearing mechanism (2), then a lifting part (6) is hung on a hanging buckle (41) of the support telescopic arm (4), after fixing is firm, then a limiting part (3) is loosened, the operator rotates the rotary bearing mechanism (2) by rotating, meanwhile, the support telescopic arm (4) rotates to the corresponding position of the building material (8) together, the length of the support telescopic arm (4) is fixed by adopting the limiting part (3), the rotary bearing mechanism (4) is fixed by screwing the rotary bearing mechanism (4) and the rotary bearing mechanism (4) is not required to be fixed, and then the lifting part (4) is fixed by screwing the rotary bearing part (4) is fixed, and then rotating the bearing mechanism (2) to a proper lifting position, fixing and screwing the bearing mechanism by adopting the limiting piece (3) again, then manually or automatically lowering the building material (10) to a specified stacking position of the floor slab (9) through the lifting piece (6), then unscrewing the limiting piece (3), rotating the rotating bearing mechanism (2) to an accurate stacking position, screwing the limiting piece (3) again, taking down the building material (10) on the lifting piece (6) to realize lifting of the building material (10), and then lifting the lifting piece (6) to the stacking position of the upper building material (10), and repeating the operation until the lifting work of all the building materials (10) is completed.
Finally, after the lifting work of the building material (10) is finished over time, an operator only needs to dismantle the building material lifting device, and each component part is cleaned and repaired and then is conveyed to a designated tool storage warehouse for storage for the next circulation and turnover.
Compared with the prior art, the utility model has the following beneficial effects:
1. the utility model effectively cooperates with floor and roof engineering construction, improves construction building materials, such as construction block lifting efficiency, is convenient and flexible to operate, reduces safety risk, saves labor when in use, can effectively control loading, unloading and lifting, and realizes lifting of construction materials in a narrow range;
2. according to the utility model, the construction materials are lifted by adopting manual or electric hoist matched with a rotating mechanism, so that the technical problems of high cost caused by lifting by large equipment and the like and incapability of lifting in a narrow range can be reduced to the maximum extent, and the lifting device is particularly suitable for the conditions of short construction period and narrow space, realizes batch lifting of construction materials, saves labor, reduces the labor intensity of operators, improves the construction efficiency, saves transportation lifting cost and can be reused;
3. the device is convenient to assemble and disassemble, convenient to operate and low in cost, can be used for long-term turnover, can be used for vertical transportation, can reasonably select the vertical transportation position according to the position of building materials, and reduces secondary transportation;
4. the utility model has novel design and simple and reasonable structure, and can finish hoisting construction without erecting a full-hall support scaffold operation platform;
5. the utility model has simple operation, can be operated without special operators and common workers, realizes high efficiency and accuracy of lifting the jack, saves a great deal of manpower or physical strength of workers, improves the working efficiency, can be recycled, ensures the safety of operators and meets the national green construction requirement;
6. the rust-proof layer is coated on the outside of the device, so that the rust can be prevented, the service life of the whole device is prolonged, the environment is protected, the resources are saved, meanwhile, the self-luminous fluorescent material is coated on the outside of the device, the position of the device can be clearly marked at night or in a darkroom and in an underground construction environment, the effect of safety prompt can be effectively played, the eye-catching degree is improved, the device is easy to distinguish by people, and the safety in construction and life is increased.
Drawings
The utility model is described in further detail below with reference to the attached drawing figures, wherein:
FIG. 1 is a schematic view of the use of the present utility model;
FIG. 2 is a schematic illustration of the overall composite structure of the present utility model;
FIG. 3 is a schematic view of a partial enlarged structure of the position A shown in FIG. 2;
FIG. 4 is a second schematic diagram of the overall assembly structure of the present utility model;
FIG. 5 is a schematic view of the operation of the present utility model;
FIG. 6 is a front view of the present utility model;
FIG. 7 is a schematic view of a partially enlarged construction of the position A shown in FIG. 6;
FIG. 8 is a schematic view of the overall exploded construction of the present utility model;
wherein, the reference numerals in the figures: 1-supporting columns (1), 11-supporting columns (11), 12-supporting installation pieces (12);
2-a rotary bearing mechanism (2), 21-a rotary sleeve (21), 22-a bearing upright post (22), 23-a bearing cross beam (23), 24-an oblique reinforcing beam (24);
3-a limiting piece (3);
4, supporting telescopic arms (4), 41 and hanging buckles (41);
5-an adjustable fastener (5);
6-a lifting element (6);
7-a reinforcing column (7);
8-supporting frame beams (8);
9-floor (9);
10-building material (10).
Detailed Description
In order to make the technical features, achieve the objects and the effects of the present utility model easy to understand, the technical solutions of the present utility model will be described in further detail below with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments of the present utility model and the features of the embodiments may be combined without conflict. The utility model will be described in detail below with reference to the drawings in connection with embodiments.
An improved lifting device for high-altitude building materials in a narrow space as shown in fig. 1 to 8 of the specification, comprising:
the bottom of the support column (1) is used for being detachably mounted with the support frame beam (8);
the rotary bearing mechanism (2) is connected with the top of the support column (1) in a universal rotation way, and is limited and fixed through a limiting piece (3);
the telescopic support comprises a telescopic support arm (4), wherein the fixed end of the telescopic support arm (4) is detachably connected with one end of the upper part of the rotary bearing mechanism (2) through an adjustable fastener (5), and a lifting part (6) for extracting building materials is arranged at the free end of the telescopic support arm (4).
Further, as shown in fig. 3, the rotary load bearing mechanism (2) includes:
the lower part of the rotary sleeve (21) is used for being connected with the top of the support column (1) in a universal rotation way;
the bearing upright post (22), one end of the bearing upright post (22) is connected with the top of the rotary sleeve (21), and the other end is connected with the bearing cross beam (23);
the bearing cross beam (23), the bearing cross beam (23) is connected with the bearing upright post (22) vertically.
Specifically, as shown in fig. 3, a plurality of adjustable arc-shaped through holes penetrating through the front surface and the back surface are formed in the outer extension surface of the lower end of the rotary sleeve (21).
More specifically, the external extension surface of the lower end of the rotary sleeve (21) is also provided with angle scale marks for displaying the rotating angle.
Specifically, a plurality of inclined reinforcing beams (24) are also connected between the bearing upright posts (22) and the bearing cross beams (23), and the inclined reinforcing beams (24) are square steel or triangular plate-shaped body members or the mixture of the square steel and the triangular plate-shaped body members; wherein, the two sides of the bearing beam (23) are also provided with adjustable connecting holes in a pair.
In the utility model, oblique reinforcing beams (24) are arranged on two sides of a bearing upright post (22).
Still more particularly, the load-bearing cross beam (23) is square steel; the adjustable connecting hole is a bolt hole.
Further, as shown in fig. 8, the supporting telescopic arm (4) is made of square steel, and two opposite sides of the connecting end of the square steel are provided with adjustable mounting holes in a penetrating way, wherein the adjustable mounting holes correspond to the adjustable connecting holes on the bearing cross beam (23); a hanging buckle (41) is connected to the lower portion of the free end of the square steel, and the hanging buckle (41) is used for hanging the lifting piece (6).
In the utility model, the lifting part (6) is a hand hoist or an electric hoist.
Further, the support column (1) includes:
the support columns (11) are arranged in parallel and opposite to each other, and the bottoms of the support columns (11) are detachably connected with the support frame beams (8) through high-strength bolts;
the support installation piece (12), the support installation piece (12) is arranged at the top of the support upright post (11) and is used for sleeving the rotary sleeve (21) and matching with the rotary sleeve;
a plurality of fastening holes which penetrate through the front surface and the back surface are formed in the outer extension surface of the lower end of the support mounting piece (12), and the fastening holes correspond to the adjustable arc-shaped through holes.
Specifically, as shown in fig. 4, the device further comprises a plurality of reinforcing columns (7), wherein each reinforcing column (7) is obliquely connected to the upper outer side wall of the supporting column (1).
Still more specifically, the stiff end of spliced pole (7) is connected with the upper portion lateral wall of support column (1), and the free end of spliced pole (7) is equipped with the connecting seat, and the connecting hole has all been seted up to the four corners department of connecting seat, and high strength bolt passes this connecting hole and is connected with support frame roof beam (8) can be dismantled.
In the present utility model, the reinforcing column (7) is a rod-shaped member or square steel.
The novel anti-rust device comprises a supporting column (1), a rotary bearing mechanism (2), a limiting part (3), a supporting telescopic arm (4), an adjustable fastening piece (5), a lifting part (6) and a reinforcing column (7), wherein an injection molding layer, a rust-proof layer, a waterproof layer and a warning layer are sequentially arranged on the outer surfaces of the supporting column (1), the rotary bearing mechanism, the limiting part, the supporting telescopic arm, the adjustable fastening piece (5), the lifting part and the reinforcing column (7) from inside to outside, and fluorescent powder is coated on the warning layer.
In the utility model, a high molecular wear-resistant material is injected on the injection layer; the rust-proof layer comprises an epoxy zinc-rich primer and a chlorinated rubber finish paint and an epoxy cloud iron intermediate paint positioned between the epoxy zinc-rich primer and the chlorinated rubber finish paint; the waterproof layer is polyurethane waterproof paint; the warning layer is a reflective warning tape or a reflective color film or reflective paint which are mixed with each other in single color or multiple colors.
Meanwhile, in the utility model, the connection is fixed connection or movable connection or detachable connection, wherein the fixed connection is welded connection or directly processed into an integrated structure; the movable connection or the detachable connection or the split structure is hinged connection, internal and external threaded connection, bayonet connection, plug socket connection or bolt assembly connection or screw connection.
In the utility model, the limiting piece (3) and the adjustable fastener (5) are both bolt assemblies, the bolt assemblies comprise bolts and nuts, the nuts are screwed on the end parts of the bolts to play a role in fastening and limiting, wherein the bolts are hexagonal bolts or flat head bolts, and the nuts are hexagonal nuts or flat head nuts.
In summary, more specific embodiments of the present utility model are:
an improved lifting device for high-altitude building materials in a narrow space with the design structure needs to be installed for standby before being used.
Before installation, an operator only needs to carry the utility model to a designated construction position to be installed through corresponding carrying equipment or manually.
During installation, an operator only needs to determine the installation position of the support column (1) according to the position of the building material (10), after determining the installation position on the floor (9), the operator fixedly installs the support column (1) on the support frame beam (8) of the floor (9) by adopting a high-strength bolt, meanwhile, the reinforcing column (7) is fixed on the corresponding position of the support frame beam (8) through the high-strength bolt, meanwhile, according to actual lifting requirements, the length of the support telescopic arm (4) is adjusted to a proper length, then an adjustable fastener (5) is adopted to fix the support telescopic arm (4) on a bearing beam (23) of the rotary bearing mechanism (2), then a lifting part (6) is hung on a hanging buckle (41) of the support telescopic arm (4), after fixing is firm, then a limiting part (3) is loosened, the operator rotates the rotary bearing mechanism (2) through rotation, meanwhile, the support telescopic arm (4) rotates to the corresponding position of the building material (8) together, the length of the support telescopic arm (4) is fixed through the limiting part (3), the rotary bearing mechanism (4) is fixed on the bearing beam (23) through rotation, the rotary bearing mechanism (4) is fixed through screwing the lifting part (4) and the lifting part (4) is fixed after the rotary bearing mechanism (4) is fixed through the rotary bearing part (4) and the rotary bearing mechanism (4) is not required to be fixed, and then rotating the bearing mechanism (2) to a proper lifting position, fixing and screwing the bearing mechanism by adopting the limiting piece (3) again, then manually or automatically lowering the building material (10) to a specified stacking position of the floor slab (9) through the lifting piece (6), then unscrewing the limiting piece (3), rotating the rotating bearing mechanism (2) to an accurate stacking position, screwing the limiting piece (3) again, taking down the building material (10) on the lifting piece (6) to realize lifting of the building material (10), and then lifting the lifting piece (6) to the stacking position of the upper building material (10), and repeating the operation until the lifting work of all the building materials (10) is completed.
Finally, after the lifting work of the building material (10) is finished over time, an operator only needs to dismantle the building material lifting device, and each component part is cleaned and repaired and then is conveyed to a designated tool storage warehouse for storage for the next circulation and turnover.
The improved lifting device for high-altitude building materials in a narrow space provided by the utility model is described in detail, and the principles of the utility model are described herein, so that the description of the working principles is only used for helping to understand the core idea of the utility model. It should be noted that it will be apparent to those skilled in the art that the present utility model may be modified and adapted without departing from the principles of the present utility model, and such modifications and adaptations are intended to be within the scope of the appended claims.
Claims (10)
1. An improved overhead building material lifting device for use in a small space, comprising:
the bottom of the support column (1) is used for being detachably mounted with the support frame beam (8);
the rotary bearing mechanism (2) is connected with the top of the support column (1) in a universal rotation way, and is limited and fixed through a limiting piece (3);
the telescopic support comprises a telescopic support arm (4), wherein the fixed end of the telescopic support arm (4) is detachably connected with one end of the upper part of the rotary bearing mechanism (2) through an adjustable fastener (5), and a lifting part (6) for extracting building materials is arranged at the free end of the telescopic support arm (4).
2. An improved lifting device for high-altitude building materials in small spaces, according to claim 1, characterized in that said rotary load-bearing means (2) comprise:
the lower part of the rotary sleeve (21) is used for being connected with the top of the support column (1) in a universal rotation way;
the bearing upright post (22), one end of the bearing upright post (22) is connected with the top of the rotary sleeve (21), and the other end is connected with the bearing cross beam (23);
the bearing cross beam (23), the bearing cross beam (23) is connected with the bearing upright post (22) vertically.
3. An improved lifting device for building materials at high altitude in small space as claimed in claim 2, wherein a plurality of adjustable arc-shaped through holes penetrating through the front and back are formed on the outer extension surface of the lower end of the rotary sleeve (21).
4. An improved lifting device for high-altitude building materials in small spaces as claimed in claim 2 or 3, wherein the outer extension surface of the lower end of the rotary sleeve (21) is further provided with angle graduation marks for displaying the rotation angle.
5. An improved lifting device for building materials at high altitude in small spaces according to claim 2, characterized in that a plurality of oblique stiffening beams (24) are connected between the bearing upright post (22) and the bearing cross beam (23), and the oblique stiffening beams (24) are square steel or triangular plate-shaped body members or the mixture of the two; wherein, the two sides of the bearing beam (23) are also provided with adjustable connecting holes in a pair.
6. An improved lifting device for high-altitude construction materials in small spaces according to claim 5, characterized in that said load-bearing cross-beam (23) is a square steel; the adjustable connecting hole is a bolt hole.
7. The improved lifting device for high-altitude building materials in a narrow space according to claim 1, wherein the supporting telescopic arm (4) is made of square steel, and two opposite sides of the connecting end of the square steel are provided with adjustable mounting holes in a penetrating way, and the adjustable mounting holes correspond to the adjustable connecting holes on the bearing cross beam (23); a hanging buckle (41) is connected to the lower portion of the free end of the square steel, and the hanging buckle (41) is used for hanging the lifting piece (6).
8. An improved lifting device for high-altitude building materials in small spaces, according to claim 1, characterized in that said supporting column (1) comprises:
the support columns (11) are arranged in parallel and opposite to each other, and the bottoms of the support columns (11) are detachably connected with the support frame beams (8) through high-strength bolts;
the support installation piece (12), the support installation piece (12) is arranged at the top of the support upright post (11) and is used for sleeving the rotary sleeve (21) and matching with the rotary sleeve;
a plurality of fastening holes which penetrate through the front surface and the back surface are formed in the outer extension surface of the lower end of the support mounting piece (12), and the fastening holes correspond to the adjustable arc-shaped through holes.
9. An improved lifting device for building materials at high altitudes in small spaces according to any one of claims 5 to 8, characterised in that it further comprises a plurality of reinforcing columns (7), each reinforcing column (7) being connected obliquely to the upper outer side wall of the supporting column (1).
10. The improved lifting device for high-altitude building materials in a narrow space according to claim 9, wherein the fixed end of the reinforcing column (7) is connected with the upper outer side wall of the supporting column (1), the free end of the reinforcing column (7) is provided with connecting seats, the four corners of each connecting seat are provided with connecting holes, and high-strength bolts penetrate through the connecting holes to be detachably connected with the supporting frame beams (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320671515.9U CN219990987U (en) | 2023-03-29 | 2023-03-29 | Improved lifting device for high-altitude building materials in narrow space |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320671515.9U CN219990987U (en) | 2023-03-29 | 2023-03-29 | Improved lifting device for high-altitude building materials in narrow space |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219990987U true CN219990987U (en) | 2023-11-10 |
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ID=88617473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320671515.9U Active CN219990987U (en) | 2023-03-29 | 2023-03-29 | Improved lifting device for high-altitude building materials in narrow space |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219990987U (en) |
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2023
- 2023-03-29 CN CN202320671515.9U patent/CN219990987U/en active Active
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