CN113460833A - Multi-degree-of-freedom weak connection node additionally provided with elevator steel shaft - Google Patents
Multi-degree-of-freedom weak connection node additionally provided with elevator steel shaft Download PDFInfo
- Publication number
- CN113460833A CN113460833A CN202110731184.9A CN202110731184A CN113460833A CN 113460833 A CN113460833 A CN 113460833A CN 202110731184 A CN202110731184 A CN 202110731184A CN 113460833 A CN113460833 A CN 113460833A
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- Prior art keywords
- mounting
- plate
- degree
- fixedly connected
- elevator steel
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- 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.)
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 17
- 239000010959 steel Substances 0.000 title claims abstract description 17
- 238000009434 installation Methods 0.000 claims abstract description 11
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 10
- 230000002035 prolonged effect Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
- F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread
- F16B5/0208—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread using panel fasteners, i.e. permanent attachments allowing for quick assembly
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- 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
- F16F15/023—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 fluid means
- F16F15/0232—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 fluid means with at least one gas spring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- 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
- F16F15/046—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 using combinations of springs of different kinds
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- 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
- F16F15/06—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 metal springs
- F16F15/067—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 metal springs using only wound springs
Abstract
The invention discloses a multi-degree-of-freedom weak connection node additionally provided with an elevator steel shaft, which comprises a first mounting plate, wherein a plurality of first threaded holes are formed in the upper end of the first mounting plate, two mounting blocks are symmetrically and fixedly connected to the upper end of the first mounting plate, mounting grooves and placing grooves are formed in the front sides of the two mounting blocks, the opposite sides of the two placing grooves are communicated with the corresponding mounting grooves, limiting plates are arranged in the two mounting grooves, first air springs are arranged on the opposite sides of the two limiting plates, and the two first air springs penetrate through the corresponding placing grooves. The device installation is simple swift to the effectual use that reduces the screw, through the design of devices such as first air spring, the short spring of second, second air spring, the short spring of second, to the influence of device when can effectually slowing down the connecting block atress, improved the life-span of device, expansion bolts's design improves the fixed effect of device.
Description
Technical Field
The invention relates to the technical field of elevator steel shaft structures, in particular to a multi-degree-of-freedom weak connection node additionally provided with an elevator steel shaft.
Background
The elevator shaft is a vertical passage specially used for the elevator to run up and down in a building, the cross section of the vertical passage is rectangular or square, one shaft is generally used by one elevator, two or more elevators can be parallelly shared by one shaft under special conditions, a door opening is formed in the floor of each floor, and a shaft door can be installed. The elevator car and a guide rail sliding on a balance weight block are arranged in a hoistway, a buffer of the elevator car is arranged in a hoistway pit, and most of the motor and the transmission machinery are arranged at the top of the hoistway;
when installing the motor well, need be connected equipment such as elevator with the well, just need use connecting device, connect usually and only use connecting block and bolt to carry out simple connection, this belongs to stronger connection, though fixed effect is better, nevertheless after the long-time use of elevator, cause connecting device to receive stress and lead to the deformation for the life of device is less strong, and when ordinary bolt was fixed connecting device at the well wall, fixed effect was not good, and the live time is one long, outside landing easily, causes the potential safety hazard.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a multi-degree-of-freedom weak connection node additionally provided with an elevator steel hoistway.
In order to achieve the purpose, the invention adopts the following technical scheme:
a multi-degree-of-freedom weak connection node for additionally arranging an elevator steel shaft comprises a first mounting plate, wherein a plurality of first threaded holes are formed in the upper end of the first mounting plate, two mounting blocks are symmetrically and fixedly connected to the upper end of the first mounting plate, mounting grooves and placing grooves are formed in the front sides of the two mounting blocks, the opposite sides of the two placing grooves are communicated with the corresponding mounting grooves, limiting plates are arranged in the two mounting grooves, first air springs are mounted on the opposite sides of the two limiting plates, the two first air springs penetrate through the corresponding placing grooves, connecting blocks are mounted at the opposite ends of the two first air springs together, openings are formed in the upper ends of the two mounting blocks, fixing plates are connected in the openings in a sliding mode, two limiting grooves are symmetrically formed in the upper end of the first mounting plate, and the lower ends of the two fixing plates are located in the corresponding limiting grooves, two the front side of installation piece all is equipped with the main screw hole, two the front side of fixed plate all is equipped with the third screw hole, two all be equipped with in the installation piece with corresponding third screw hole and main screw hole matched with supplementary screw hole.
Preferably, two second gas springs are installed at the lower ends of the two limiting plates, and auxiliary plates are installed at the lower ends of the two corresponding second gas springs.
Preferably, two all the cover is equipped with first short spring on the first gas spring, two lateral wall fixed connection about the looks remote site of first short spring and the connecting block that corresponds, two the looks back of the body end of first short spring and the lateral wall fixed connection of the limiting plate that corresponds.
Preferably, each second gas spring is sleeved with a second short spring, the upper end of each second short spring is fixedly connected with the corresponding limiting plate, and the lower end of each second short spring is fixedly connected with the upper end of the corresponding auxiliary plate.
Preferably, the upper ends of the two fixing plates are fixedly connected with a connecting plate together, and the connecting plate is made of stainless steel.
Preferably, the upper end fixed connection second mounting panel of connecting block, the upper end of second mounting panel is equipped with four second screw holes.
Preferably, each first threaded hole is provided with an expansion bolt, the upper end of each expansion bolt is provided with a nut, and the lower end of each expansion bolt is provided with a mounting pipe and a sleeve.
Preferably, a washer is mounted at the lower end of each nut, and a rubber pad is mounted at the rear side of each fixing plate.
Compared with the prior art, the device has the advantages that:
1. according to the invention, through the arrangement of the first mounting plate, the mounting block, the mounting grooves, the placing grooves, the limiting plates, the limiting grooves, the fixing plates and other structures, when in mounting, only the corresponding limiting plates are placed in the corresponding mounting grooves, and the two fixing plates are pushed into the mounting grooves from the corresponding openings until reaching the limiting grooves, so that the rapid mounting can be realized through screw mounting, the use of screws is reduced, the stress action can be relieved through the design of the first air spring and the second short spring, and the service life of the device is prolonged.
2. According to the invention, through the arrangement of the second gas spring, the second short spring, the auxiliary plate and other structures, when the connecting block is subjected to an up-and-down acting force, the device can be effectively buffered, the situations of deformation and the like caused by the stress of parts of the device are avoided, the device is prevented from being damaged too fast, and the service life of the device can be effectively prolonged.
3. According to the invention, through arranging the expansion bolt, the sleeve, the nut, the gasket, the mounting pipe and other structures, the first mounting plate is usually connected with the wall, and can be better fixed on the wall through the expansion bolt, so that compared with the traditional bolt, the expansion bolt is more difficult to fall off, the fixing effect is better, and further the safety of the device is improved.
Drawings
FIG. 1 is a structural perspective view of a multi-degree of freedom weak link node added with an elevator steel hoistway according to the present invention;
FIG. 2 is a cross-sectional view of FIG. 1;
FIG. 3 is an enlarged view of the structure at A in FIG. 2;
FIG. 4 is a perspective view of the first mounting plate;
FIG. 5 is a perspective view of the mounting block on the left side;
fig. 6 is a perspective view of the fixing plate and the connecting plate.
In the figure: the mounting structure comprises a first mounting plate 1, a first threaded hole 2, a mounting block 3, a fixing plate 4, a mounting groove 5, a connecting plate 6, a connecting block 7, a second mounting plate 8, a second threaded hole 9, a placing groove 10, a first air spring 11, a first short spring 12, a limiting plate 13, a second air spring 14, a second short spring 15, an auxiliary plate 16, an expansion bolt 17, a sleeve 18, a mounting pipe 19, a nut 20, a gasket 21, an auxiliary threaded hole 22, a main threaded hole 23, a limiting groove 24, an opening 25 and a third threaded hole 26.
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. 1-6, a multi-degree-of-freedom weak connection node for additionally arranging an elevator steel hoistway comprises a first mounting plate 1, wherein a plurality of first threaded holes 2 are formed in the upper end of the first mounting plate 1, two mounting blocks 3 are symmetrically and fixedly connected to the upper end of the first mounting plate 1, mounting grooves 5 and mounting grooves 10 are formed in the front sides of the two mounting blocks 3, opposite sides of the two mounting grooves 10 are communicated with the corresponding mounting grooves 5, limiting plates 13 are arranged in the two mounting grooves 5, first air springs 11 are mounted on the opposite sides of the two limiting plates 13, the two first air springs 11 penetrate through the corresponding mounting grooves 10, connecting blocks 7 are mounted on the opposite ends of the two first air springs 11 together, first short springs 12 are sleeved on the two first air springs 11, the opposite ends of the two first short springs 12 are fixedly connected with the left side wall and the right side wall of the corresponding connecting block 7, and the opposite ends of the two first short springs 12 are fixedly connected with the side walls of the corresponding limiting plates 13;
the upper ends of the two mounting blocks 3 are respectively provided with an opening 25, the two openings 25 are respectively connected with a fixing plate 4 in a sliding manner, the upper end of the first mounting plate 1 is symmetrically provided with two limiting grooves 24, the lower ends of the two fixing plates 4 are positioned in the corresponding limiting grooves 24, the upper ends of the two fixing plates 4 are jointly and fixedly connected with a connecting plate 6, the connecting plate 6 is made of stainless steel, the front sides of the two mounting blocks 3 are respectively provided with a main threaded hole 23, the front sides of the two fixing plates 4 are respectively provided with a third threaded hole 26, and the two mounting blocks 3 are respectively provided with an auxiliary threaded hole 22 matched with the corresponding third threaded hole 26 and the main threaded hole 23;
during the installation, only need place corresponding limiting plate 13 in the mounting groove 5 that corresponds, push into two fixed plates 4 to mounting groove 5 in from the opening 25 that corresponds through connecting plate 6, the lower extreme that is located the spacing groove 24 until the fixed plate 4 that corresponds, can realize installing fast at third screw hole 26 through ordinary mounting screw, the use of screw has been reduced, and the power that produces the device when the atress about connecting block 7 can be slowed down in the design of first gas spring 11 and first short spring 12, the protection effect to the device part has been increased, the service life of device has been improved.
According to the invention, two second gas springs 14 are respectively arranged at the lower ends of two limit plates 13, an auxiliary plate 16 is arranged at the lower end of each corresponding two second gas springs 14, a second short spring 15 is sleeved on each second gas spring 14, the upper end of each second short spring 15 is fixedly connected with the corresponding limit plate 13, the lower end of each second short spring 15 is fixedly connected with the upper end of the corresponding auxiliary plate 16, the upper end of a connecting block 7 is fixedly connected with a second mounting plate 8, the upper end of the second mounting plate 8 is provided with four second threaded holes 9, and the second mounting plate 8 can be connected with devices such as an elevator and the like through a plurality of second threaded holes 9;
the force generated by the connecting block 7 when being stressed up and down can be relieved through the second air spring 14 and the second short spring 15, the device can be effectively buffered, the situations that parts of the device are stressed to cause deformation and the like are avoided, the device is prevented from being damaged too fast, and the service life of the device can be effectively prolonged;
each second threaded hole 9 is provided with an expansion bolt 17, the upper end of each expansion bolt 17 is provided with a nut 20, the lower end of each expansion bolt 17 is provided with a mounting pipe 19 and a sleeve 18, the lower end of each nut 20 is provided with a washer 21, the rear side of each fixing plate 4 is provided with a rubber pad, the fixing effect of the fixing plate 4 on the limiting plate 13 is improved, the expansion bolts 17 are based on the principle that after the expansion bolts 17 are punched into holes in the ground or wall surface, the nuts 20 on the expansion bolts 17 are screwed by a spanner, the mounting pipes 19 move outwards, the sleeves 18 outside are not moved, and therefore, the sleeves 18 are expanded by the large heads below the mounting pipes 19, the whole holes are expanded, the expansion bolts 17 cannot be drawn out, and the fixing effect of the device is improved;
in the invention, when in installation, only the corresponding limit plate 13 is required to be placed in the corresponding installation groove 5, the two fixing plates 4 are pushed into the installation groove 5 from the corresponding openings 25 through the connecting plate 6 until the lower ends of the corresponding fixing plates 4 are positioned in the limit grooves 24, and the quick installation can be realized by installing the fixing plates in the third threaded holes 26 through common screws, so that the use of screws is reduced, the design of the first air spring 11 and the first short spring 12 can reduce the force generated on the device when the connecting block 7 is stressed left and right, the protection effect on the device parts is increased, the service life of the device is prolonged, the force generated on the device when the connecting block 7 is stressed up and down can be reduced through the second air spring 14 and the second short spring 15, the device can be effectively buffered, the occurrence of the conditions of deformation and the like caused by the stress of the parts of the device is avoided, and the device is prevented from being damaged too fast, the service life of the device is further prolonged, and the fixing effect of the device is improved by the design of the expansion bolts 17;
the device installation is simple swift to the effectual use that reduces the screw, through the design of devices such as first air spring 11, first short spring 12, second air spring 14, second short spring 15, to the influence of device when can effectually slowing down connecting block 7 atress, improved the life-span of device, expansion bolts 17's design improves the fixed effect of device.
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 (8)
1. The multi-degree-of-freedom weak connection node for additionally arranging the elevator steel hoistway comprises a first mounting plate (1) and is characterized in that a plurality of first threaded holes (2) are formed in the upper end of the first mounting plate (1), two mounting blocks (3) are symmetrically and fixedly connected to the upper end of the first mounting plate (1), mounting grooves (5) and mounting grooves (10) are formed in the front sides of the two mounting blocks (3), opposite sides of the two mounting grooves (10) are communicated with the corresponding mounting grooves (5), limiting plates (13) are arranged in the two mounting grooves (5), first air springs (11) are arranged on opposite sides of the two limiting plates (13), the two first air springs (11) penetrate through the corresponding mounting grooves (10), connecting blocks (7) are jointly arranged at opposite ends of the two first air springs (11), openings (25) are formed in the upper ends of the two mounting blocks (3), two equal sliding connection has fixed plate (4) in opening (25), the upper end symmetry of first mounting panel (1) is equipped with two spacing grooves (24), two the lower extreme of fixed plate (4) is located corresponding spacing groove (24), two the front side of installation piece (3) all is equipped with main screw hole (23), two the front side of fixed plate (4) all is equipped with third screw hole (26), two all be equipped with in installation piece (3) with corresponding third screw hole (26) and main screw hole (23) matched with supplementary screw hole (22).
2. The multi-degree-of-freedom weak link joint for adding an elevator steel shaft is characterized in that two second air springs (14) are mounted at the lower ends of two limiting plates (13), and auxiliary plates (16) are mounted at the lower ends of the corresponding two second air springs (14).
3. The multi-degree-of-freedom weak connection node for additionally arranging the elevator steel hoistway according to claim 2 is characterized in that two first air springs (11) are respectively sleeved with a first short spring (12), opposite ends of the two first short springs (12) are fixedly connected with left and right side walls of corresponding connecting blocks (7), and opposite ends of the two first short springs (12) are fixedly connected with side walls of corresponding limiting plates (13).
4. The multi-degree-of-freedom weak link joint for adding the elevator steel hoistway according to claim 3, wherein each second gas spring (14) is sleeved with a second short spring (15), the upper end of each second short spring (15) is fixedly connected with the corresponding limiting plate (13), and the lower end of each second short spring (15) is fixedly connected with the upper end of the corresponding auxiliary plate (16).
5. The multi-degree-of-freedom weak connection node for additionally arranging the elevator steel hoistway according to claim 1 is characterized in that the upper ends of the two fixing plates (4) are fixedly connected with a connecting plate (6) together, and the connecting plate (6) is made of stainless steel.
6. The multi-degree-of-freedom weak connection node for adding the elevator steel hoistway according to claim 1, wherein the upper end of the connection block (7) is fixedly connected with a second mounting plate (8), and the upper end of the second mounting plate (8) is provided with four second threaded holes (9).
7. The multi-degree-of-freedom weak connection node for adding the elevator steel hoistway as claimed in claim 1, wherein each second threaded hole (9) is provided with an expansion bolt (17), the upper end of each expansion bolt (17) is provided with a nut (20), and the lower end of each expansion bolt (17) is provided with a mounting pipe (19) and a sleeve (18).
8. The multi-degree-of-freedom weak link joint for adding an elevator steel hoistway according to claim 7, wherein a washer (21) is mounted at the lower end of each nut (20), and a rubber pad is mounted at the rear side of each fixing plate (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110731184.9A CN113460833A (en) | 2021-06-30 | 2021-06-30 | Multi-degree-of-freedom weak connection node additionally provided with elevator steel shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110731184.9A CN113460833A (en) | 2021-06-30 | 2021-06-30 | Multi-degree-of-freedom weak connection node additionally provided with elevator steel shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113460833A true CN113460833A (en) | 2021-10-01 |
Family
ID=77874142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110731184.9A Pending CN113460833A (en) | 2021-06-30 | 2021-06-30 | Multi-degree-of-freedom weak connection node additionally provided with elevator steel shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113460833A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07291549A (en) * | 1994-04-26 | 1995-11-07 | Toshiba Corp | Fixing device for elevator guide rail |
| CN207258956U (en) * | 2017-09-29 | 2018-04-20 | 邓潮森 | The mounting structure of connection plate for elevator guide rail, guide rail and rail brackets |
| CN210914870U (en) * | 2019-07-04 | 2020-07-03 | 丹阳市华发环保机械有限公司 | High stability environmental protection elevator guide rail bracket |
| CN211169400U (en) * | 2019-08-08 | 2020-08-04 | 张会春 | Detachable wall-attached connecting structure of building construction elevator |
| CN112499436A (en) * | 2020-12-11 | 2021-03-16 | 湖州职业技术学院 | Multi-degree-of-freedom weak connection node additionally provided with elevator steel shaft |
-
2021
- 2021-06-30 CN CN202110731184.9A patent/CN113460833A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07291549A (en) * | 1994-04-26 | 1995-11-07 | Toshiba Corp | Fixing device for elevator guide rail |
| CN207258956U (en) * | 2017-09-29 | 2018-04-20 | 邓潮森 | The mounting structure of connection plate for elevator guide rail, guide rail and rail brackets |
| CN210914870U (en) * | 2019-07-04 | 2020-07-03 | 丹阳市华发环保机械有限公司 | High stability environmental protection elevator guide rail bracket |
| CN211169400U (en) * | 2019-08-08 | 2020-08-04 | 张会春 | Detachable wall-attached connecting structure of building construction elevator |
| CN112499436A (en) * | 2020-12-11 | 2021-03-16 | 湖州职业技术学院 | Multi-degree-of-freedom weak connection node additionally provided with elevator steel shaft |
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Application publication date: 20211001 |
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| RJ01 | Rejection of invention patent application after publication |