CN209874371U - Elevator well protector - Google Patents
Elevator well protector Download PDFInfo
- Publication number
- CN209874371U CN209874371U CN201920270622.4U CN201920270622U CN209874371U CN 209874371 U CN209874371 U CN 209874371U CN 201920270622 U CN201920270622 U CN 201920270622U CN 209874371 U CN209874371 U CN 209874371U
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- 238000013016 damping Methods 0.000 claims description 33
- 230000002093 peripheral effect Effects 0.000 claims description 24
- 229910000831 Steel Inorganic materials 0.000 claims description 8
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- 206010024796 Logorrhoea Diseases 0.000 abstract description 11
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 10
- 238000010521 absorption reaction Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
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- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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- Elevator Door Apparatuses (AREA)
Abstract
The utility model discloses an elevator well protector, including horizontal protective structure and vertical protective structure, horizontal protective structure includes supporting baseplate and protection network, supporting baseplate one end is connected with pre-buried built-in fitting in elevartor shaft shear force wall through anchor assembly, supporting baseplate's the other end is taken and is established on the floor, the built-in fitting is located the layer the top of floor, vertical pre-buried on the floor has a plurality of load parts, the protection network through a plurality of bumper shock absorbers with supporting baseplate links to each other, the protection network with supporting baseplate is parallel. The vertical protective structure comprises a protective structure body and an adjusting part. The utility model discloses an elevator well protector simple to operate can prevent falling of garrulous little object and cause personnel injured and equipment harm, and vertical protective structure's width size can be adjusted simultaneously, is applicable to the protection of not unidimensional elevator well door opening.
Description
Technical Field
The utility model relates to a building engineering technical field particularly, relates to an elevator well protector.
Background
In recent years, with the progress of urbanization, high-rise and super high-rise buildings are more and more, and elevators are important branch projects of high-rise buildings. In the construction process before the installation of the elevator, an elevator entrance is an important hazard, and a method of setting up steel pipe type horizontal safety protection and entrance closing in an elevator shaft is generally adopted, a steel pipe type horizontal supporting layer is set up in each layer from bottom to top in the elevator shaft, a 30-layer high-rise layer is taken as an example, 660-meter scaffold pipes and 350 fasteners are needed, and the steel pipe type horizontal safety protection construction is time-consuming, turnover tools are wasted, and the efficiency is low; meanwhile, small objects easily fall into the well, so that the safety of personnel is damaged and equipment in the well is damaged; and the protection device of current elevator well door opening size is fixed, only is applicable to the elevator well door opening of single size and uses, need carry out size measurement to elevator well door opening during the use, wastes time and energy.
SUMMERY OF THE UTILITY MODEL
For solving the problem that exists among the prior art, the utility model aims at providing an elevator well protector, simple to operate can prevent falling of garrulous little object and cause personnel injured and equipment harm, and vertical protective structure's width dimension can be adjusted simultaneously, is applicable to the protection of not unidimensional elevator well door opening.
In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides an elevator well protector, includes horizontal protective structure and vertical protective structure, horizontal protective structure includes supporting baseplate and protection network, supporting baseplate one end is connected with pre-buried built-in fitting in elevartor shaft shear force wall through anchor assembly, supporting baseplate's the other end is taken and is established on the floor, the built-in fitting is located the same floor the top of floor, vertical pre-buried on the floor has a plurality of load parts, the protection network through a plurality of bumper shock absorbers with supporting baseplate links to each other, the protection network with supporting baseplate is parallel.
The vertical protection structure comprises a protection structure body and an adjusting part, the protection structure body comprises a connecting part, the connecting part is a square shell structure with an opening at one end, a plurality of square rods are fixedly connected inside the connecting part along the length direction of the connecting part, the square rods are arranged in parallel, two opposite side surfaces of the square rods are respectively attached to two inner side walls of the connecting part along the width direction, an adjusting groove is formed between every two adjacent square rods, the length of each square rod is smaller than that of the connecting part, one end of each square rod is flush with the end part of the opening of the connecting part, and an adjusting cavity is formed between the other end of each square rod and the inner side wall of the connecting part far away from the opening; the adjusting part comprises two parallel connecting rods and a plurality of adjusting rods uniformly arranged between the two connecting rods, the two ends of each adjusting rod are fixedly connected with the two connecting rods respectively, one connecting rod is arranged in the adjusting cavity, the other connecting rod is arranged outside the connecting part, and the plurality of adjusting rods correspond to the adjusting grooves and are arranged in the adjusting grooves in a sliding mode.
The periphery of the protective net is provided with a rectangular frame, and the shock absorbers are fixedly arranged at four corners of the bottom of the rectangular frame.
During the use, horizontal protective structure is used for preventing that the interior object of elevator well from falling. The supporting bottom plate is arranged downwards from the shear wall towards the floor slab in an inclined mode, the inclination angle is 3-10 degrees, the lower end of the supporting bottom plate arranged in the inclined mode is limited by the force bearing piece, and the supporting bottom plate is prevented from slipping along the floor slab. The supporting base plate is supported by the embedded part, the floor and the bearing part in the shear wall body together to form a stable structure (if the lower end of the supporting base plate is a certain distance away from the bearing part, a baffle plate can be additionally arranged between the supporting base plate and the bearing part). When having garrulous little object to drop in the well, at first through the protection network on to the supporting baseplate, because the supporting baseplate is the tilt state, consequently garrulous little object along supporting baseplate landing to floor under the effect of dead weight, avoided garrulous little object to fall into the shaft bottom and cause personnel's injury and equipment harm. When big object falls, big object falls to the protective screen, is protected for the first time by the protection network, later cushions the power that big object brought by the bumper shock absorber, avoids big object directly to fall to cause serious harm on the stereoplasm supporting baseplate.
Vertical protective structure is used for preventing that the people from falling into in the elevator well from elevator well door opening mistake. Wherein, the protective structure body is far away from one end of the opening and the connecting rod arranged outside the connecting part are respectively fixed on the wall body at the door opening of the elevator shaft. When the vertical protective structure is used, the whole width size of the vertical protective structure can be changed by the protective structure body and the adjusting part, and the vertical protective structure is further suitable for protecting elevator shaft door openings of different sizes. The specific principle of changing the whole width size of the vertical protection structure is as follows: when the protective structure body is fixed, the adjusting part is pulled (arranged on the connecting rod outside the connecting part), the connecting rod arranged in the adjusting cavity moves along the length direction of the adjusting groove, so that the size of the whole vertical protective structure is changed, and when the size is proper, the connecting rod outside the connecting part is fixed on a wall body at the position of an elevator shaft door opening, so that the installation is completed.
The utility model discloses an elevator well protector simple to operate can prevent falling of garrulous little object and cause personnel injured and equipment harm, and vertical protective structure's width size can be adjusted simultaneously, is applicable to the protection of not unidimensional elevator well door opening.
Preferably, the shock absorber comprises a top plate and a bottom plate, the top plate is fixedly connected with the protective net, a central shock absorption device is arranged between the top plate and the bottom plate, a peripheral shock absorption spring is arranged on the periphery of the central shock absorption device, a protective sleeve is arranged on the periphery of the peripheral shock absorption spring, and the central shock absorption device, the peripheral shock absorption spring and the protective sleeve are coaxially arranged; the central damping device comprises a guide rod vertically arranged between a top plate and a bottom plate and a pressure spring plate located in the middle of the guide rod, a first damping spring is arranged between the pressure spring plate and the top plate, a second damping spring is arranged between the pressure spring plate and the bottom plate, the guide rod is fixedly connected with the top plate, and a spring on the damper is always in a tension state.
The bumper shock absorber adopts the combination of multiple spring form, better shock attenuation performance has been realized, the form of combination about central damping device adopted first damping spring and second damping spring, the structure is more stable, the shock attenuation effect is better, peripheral damping spring adopts the great cylindrical spring of spring wire diameter, load is big, bearing capacity is strong, in addition, be provided with protective sleeve in peripheral damping spring's periphery, protective sleeve's setting plays the guard action to bumper shock absorber inner structure, can play limiting displacement to peripheral damping spring simultaneously, prevent that peripheral damping spring from taking place the skew when being compressed, the effectual cushioning performance who improves the protection network, can be fine avoid the big object directly to fall to the supporting baseplate when falling and cause serious harm.
Preferably, one end, far away from the opening, of the adjusting portion is hinged to a wall body at a door opening of an elevator shaft, a first retaining ring is arranged at the wall body, a second retaining ring corresponding to the first retaining ring is arranged on a connecting rod arranged outside the connecting portion, and the first retaining ring is connected with the second retaining ring through a padlock. The padlock is arranged to facilitate opening and locking of the vertical protective structure. Meanwhile, the size of the vertical protection structure can be adjusted more conveniently through the first retaining ring and the second retaining ring.
Preferably, the protective sleeves include an upper protective sleeve and a lower protective sleeve, the upper protective sleeve and the lower protective sleeve being separated when the peripheral damper spring and the central damper device are in an initial state, and the upper protective sleeve and the lower protective sleeve being in contact with each other when the peripheral damper spring and the central damper device are compressed.
Preferably, the support base plate comprises reinforcing steel bars arranged longitudinally and transversely and protection plates arranged on the reinforcing steel bars, the reinforcing steel bars are connected in a welding mode, the outermost reinforcing steel bars form a square outer frame, and the anchoring piece is fixedly arranged on the outer wall of the outer frame. The protective plate is made of wood plywood or bamboo plywood and has the thickness of 30-60 mm. The guard plate accessible is tied up and is prevented fixed with the reinforcing bar, when needing to dismantle, at first demolish the guard plate, later carry out dismantling of reinforcing bar, at last with built-in fitting and bearing spare clear away can.
Preferably, the protective net is woven by hemp ropes, nylon ropes or steel wires, and the cost is low.
The utility model has the advantages that:
(1) the utility model discloses an elevator well protector simple to operate can prevent falling of garrulous little object and cause personnel injured and equipment harm, and vertical protective structure's width size can be adjusted simultaneously, is applicable to the protection of not unidimensional elevator well door opening, convenient and fast.
(2) The bumper shock absorber that sets up can effectual improvement protection network's shock-absorbing capacity, and the direct damage that causes to the supporting baseplate that falls when avoiding big object to fall that can be fine.
(3) The padlock is arranged to facilitate opening and locking of the vertical protective structure. Meanwhile, the size of the vertical protection structure can be adjusted more conveniently through the first retaining ring and the second retaining ring.
Drawings
Fig. 1 is a schematic view of a horizontal protective structure in embodiment 1 of the present invention;
fig. 2 is a schematic structural view of a support base plate with a protection plate removed according to embodiment 1 of the present invention;
fig. 3 is a schematic view of a vertical protective structure in embodiment 1 of the present invention;
fig. 4 is a detailed schematic view of a vertical protection structure in embodiment 1 of the present invention;
fig. 5 is a sectional view of a protective structure body according to embodiment 1 of the present invention;
fig. 6 is a schematic structural view of a shock absorber according to embodiment 1 of the present invention.
Description of reference numerals:
1. a horizontal guard structure; 2. a vertical protective structure; 3. a support base plate; 4. a protective net; 5. an anchoring member; 6. embedding parts; 7. a force bearing member; 8. a shock absorber; 9. a protective structure body; 10. an adjustment section; 11. a connecting portion; 12. a square rod; 13. an adjustment groove; 14. adjusting the cavity; 15. a connecting rod; 16. adjusting a rod; 17. a top plate; 18. a base plate; 19. a central damping device; 20. a guide bar; 21. a compression spring plate; 22. a first damping spring; 23. a second damping spring; 24. a peripheral damping spring; 25. a protective sleeve; 26. an upper protective sleeve; 27. a lower protective sleeve; 28. a first retaining ring; 29. a second retaining ring; 30. reinforcing steel bars; 31. a protection plate; 32. a shear wall; 33. an elevator hoistway; 34. an elevator hoistway door opening; 35. and (7) a floor slab.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Example 1:
as shown in fig. 1-2, an elevator hoistway protection device comprises a horizontal protection structure 1 and a vertical protection structure 2, wherein the horizontal protection structure 1 comprises a supporting base plate 3 and a protective net 4, one end of the supporting base plate 3 is connected with an embedded part 6 embedded in an elevator hoistway shear wall 32 through an anchoring part 5, the other end of the supporting base plate 3 is erected on a floor slab 35, the embedded part 6 is located above the floor slab 35 on the same floor, a plurality of bearing parts 7 are vertically embedded on the floor slab 35, the protective net 4 is connected with the supporting base plate 3 through a plurality of shock absorbers 8, and the protective net 4 is parallel to the supporting base plate 3.
As shown in fig. 3-5, the vertical protective structure 2 includes a protective structure body 9 and an adjusting portion 10, the protective structure body 9 includes a connecting portion 11, as shown in fig. 4, the connecting portion 11 is a square shell structure with an opening at the right end, a plurality of square bars 12 are fixedly connected inside the connecting portion 11 along the length direction thereof, the plurality of square bars 12 are arranged in parallel, the left and right side surfaces (as shown in fig. 5) of the plurality of square bars 12 are respectively attached to two inner side walls of the connecting portion 11 along the width direction, an adjusting groove 13 is formed between two adjacent square bars 12, the length of each square bar 12 is smaller than that of the connecting portion 11, the right end of each square bar 12 is flush with the end of the opening of the connecting portion 11, and an adjusting cavity 14 is formed between the left end of each square bar 12 and the left inner side wall of the connecting; the adjusting part 10 comprises two connecting rods 15 arranged in parallel and a plurality of adjusting rods 16 evenly and vertically fixedly connected between the two connecting rods 15, one connecting rod 15 is arranged in the adjusting cavity 14, the other connecting rod 15 is arranged outside the connecting part 11, and the plurality of adjusting rods 16 correspond to the adjusting grooves 13 and are arranged in the adjusting grooves 13 in a sliding mode.
The periphery of the protective net 4 is provided with a rectangular frame, and the shock absorbers 8 are fixedly arranged at four corners of the bottom of the rectangular frame.
As shown in fig. 6, the damper 8 includes a top plate 17 and a bottom plate 18, the top plate 17 is fixedly connected with the protection net 4, a central damping device 19 is arranged between the top plate 17 and the bottom plate 18, a peripheral damping spring 24 is arranged on the periphery of the central damping device 19, a protection sleeve 25 is arranged on the periphery of the peripheral damping spring 24, and the central damping device 19, the peripheral damping spring 24 and the protection sleeve 25 are coaxially arranged; the central damping device 19 comprises a guide rod 20 vertically arranged between a top plate 17 and a bottom plate 18 and a pressure spring plate 21 positioned in the middle of the guide rod 20, a first damping spring 22 is arranged between the pressure spring plate 21 and the top plate 17, a second damping spring 23 is arranged between the pressure spring plate 21 and the bottom plate 18, the guide rod 20 is fixedly connected with the top plate 17, and the spring on the damper 8 is always in a tension state.
Damper 8 adopts the combination of multiple spring form, better shock-absorbing performance has been realized, central damping device 19 adopts the form of first damping spring 22 and second damping spring 23 combination from top to bottom, the structure is more stable, the shock attenuation effect is better, peripheral damping spring 24 adopts the great cylindrical spring of spring wire diameter, load is big, bearing capacity is strong, in addition, be provided with protective sleeve 25 in peripheral damping spring 24's periphery, protective sleeve 25's setting plays the guard action to 8 inner structure of damper, can play limiting displacement to peripheral damping spring 24 simultaneously, prevent that peripheral damping spring 24 from taking place the skew when being compressed, the effectual cushioning performance that improves protection network 4, can be fine avoid the big object when falling direct fall to supporting baseplate 3 on and cause serious damage. Preferably, the protection sleeves 25 include an upper protection sleeve 26 and a lower protection sleeve 27, the upper protection sleeve 26 and the lower protection sleeve 27 are separated when the peripheral shock absorbing springs 24 and the central shock absorbing device 19 are in an initial state, and the upper protection sleeve 26 and the lower protection sleeve 27 are in contact with each other when the peripheral shock absorbing springs 24 and the central shock absorbing device 19 are compressed.
The supporting base plate 3 comprises reinforcing steel bars 30 which are longitudinally and transversely arranged and protective plates 31 arranged on the reinforcing steel bars 30, the reinforcing steel bars 30 are connected in a welding mode, the outermost reinforcing steel bars 30 form a square outer frame, and the anchoring parts 5 are fixedly arranged on the outer wall of the outer frame. The corresponding reinforcing steel bars 30 at the elevator shaft door opening 34 extend out of the elevator shaft door opening 34 to the floor slab 35.
The protection plate 31 is made of wood plywood or bamboo plywood and has a thickness of 30-60 mm. The protection plate 31 can be fixed with the steel bars 30 through bundling prevention, when the protection plate 31 needs to be disassembled, the protection plate 31 is firstly disassembled, then the steel bars 30 are disassembled, and finally the embedded parts 6 and the bearing parts 7 are cleaned.
The protective net 4 is woven by hemp ropes, nylon ropes or steel wires, and the cost is low.
In use, the horizontal protective structure 1 is used to prevent objects in the elevator hoistway 33 from falling. The supporting bottom plate 3 is obliquely and downwards arranged towards the floor slab 35 from the shear wall 32, the inclination angle is 3-10 degrees, and the lower end of the obliquely arranged supporting bottom plate 3 is limited by the bearing piece 7 to prevent the supporting bottom plate from slipping along the floor slab 35. The supporting base plate 3 is supported by the embedded part 6, the floor slab 35 and the bearing part 7 in the shear wall 32 to form a stable structure (if the lower end of the supporting base plate 3 is a certain distance away from the bearing part 7, a baffle can be added between the supporting base plate 3 and the bearing part 7). When having garrulous little object to drop in the well, at first through protection network 4 on to supporting baseplate 3, because supporting baseplate 3 is the tilt state, consequently garrulous little object along supporting baseplate 3 landing to floor 35 under the effect of dead weight, avoided garrulous little object to fall into the shaft bottom and cause personnel's injury and equipment harm. When big object falls, big object falls to protection network 4, is protected for the first time by protection network 4, later cushions the power that big object brought by bumper shock absorber 8, avoids big object directly to fall to cause serious harm on stereoplasm supporting baseplate 3.
The vertical protective structure 2 serves to prevent people from accidentally falling into the elevator shaft 33 from the elevator shaft door opening 34. Wherein, one end of the protective structure body 9 far away from the opening thereof and the connecting rod 15 arranged outside the connecting part 11 are respectively fixed on the wall body at the position of the elevator shaft door opening 34. When the vertical protective structure 2 is used, the whole width of the vertical protective structure 2 can be changed by the protective structure body 9 and the adjusting part, so that the vertical protective structure is suitable for protecting the elevator hoistway door openings 34 with different sizes. The specific principle of changing the overall width dimension of the vertical protective structure 2 is as follows: when the protective structure body 9 is fixed, the adjusting portion 10 (the connecting rod 15 arranged outside the connecting portion 11) is pulled, the connecting rod 15 arranged in the adjusting cavity 14 moves along the length direction of the adjusting groove 13 at the moment, so that the size of the whole vertical protective structure 2 is changed, and when the size is proper, the connecting rod 15 arranged outside the connecting portion 11 is fixed on a wall body at the position of an elevator hoistway door opening 34, and then installation is completed.
The utility model discloses an elevator well protector simple to operate can prevent falling of garrulous little object and cause personnel injured and equipment harm, and vertical protective structure's width size can be adjusted simultaneously, is applicable to the protection of not unidimensional elevator well door opening.
Example 2:
as shown in fig. 3, in this embodiment, on the basis of embodiment 1, one end of the adjusting portion 10 away from the opening is hinged to a wall at a hoistway door opening 34, the wall is provided with a first buckle 28, the connecting rod 15 disposed outside the connecting portion 11 is provided with a second buckle 29 corresponding to the first buckle 28, and the first buckle 28 and the second buckle 29 are connected by a padlock. The padlock provided facilitates the opening and blocking of the vertical protective structure 2. While the adjustment of the size of the vertical shielding structure 2 can be performed more conveniently by means of the first and second snap rings 28, 29.
The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.
Claims (6)
1. The elevator shaft protection device is characterized by comprising a horizontal protection structure and a vertical protection structure, wherein the horizontal protection structure comprises a supporting bottom plate and a protection net, one end of the supporting bottom plate is connected with an embedded part embedded in a shear wall body of an elevator shaft through an anchoring part, the other end of the supporting bottom plate is erected on a floor slab, the embedded part is positioned above the floor slab on the same floor, a plurality of bearing parts are vertically embedded on the floor slab, the protection net is connected with the supporting bottom plate through a plurality of shock absorbers, and the protection net is parallel to the supporting bottom plate;
the vertical protection structure comprises a protection structure body and an adjusting part, the protection structure body comprises a connecting part, the connecting part is a square shell structure with an opening at one end, a plurality of square rods are fixedly connected inside the connecting part along the length direction of the connecting part, the square rods are arranged in parallel, two opposite side surfaces of the square rods are respectively attached to two inner side walls of the connecting part along the width direction, an adjusting groove is formed between every two adjacent square rods, the length of each square rod is smaller than that of the connecting part, one end of each square rod is flush with the end part of the opening of the connecting part, and an adjusting cavity is formed between the other end of each square rod and the inner side wall of the connecting part far away from the opening; the adjusting part comprises two connecting rods which are arranged in parallel and a plurality of adjusting rods which are evenly and vertically fixedly connected between the two connecting rods, one connecting rod is arranged in the adjusting cavity, the other connecting rod is arranged outside the connecting part, and the plurality of adjusting rods correspond to the adjusting grooves and are arranged in the adjusting grooves in a sliding mode.
2. The elevator hoistway protection device of claim 1, wherein the shock absorber comprises a top plate and a bottom plate, a central shock absorbing device is arranged between the top plate and the bottom plate, a peripheral shock absorbing spring is arranged on the periphery of the central shock absorbing device, a protective sleeve is arranged on the periphery of the peripheral shock absorbing spring, and the central shock absorbing device, the peripheral shock absorbing spring and the protective sleeve are coaxially arranged; the central damping device comprises a guide rod vertically arranged between a top plate and a bottom plate and a pressure spring plate located in the middle of the guide rod, a first damping spring is arranged between the pressure spring plate and the top plate, a second damping spring is arranged between the pressure spring plate and the bottom plate, the guide rod is fixedly connected with the top plate, and a spring on the damper is always in a tension state.
3. The elevator shaft protection device according to claim 1, wherein one end of the adjusting portion, which is far away from the opening, is hinged to a wall body at an elevator shaft door opening, a first retaining ring is arranged at the wall body, a second retaining ring corresponding to the first retaining ring is arranged on the connecting rod arranged outside the connecting portion, and the first retaining ring and the second retaining ring are connected through a padlock.
4. The elevator hoistway protection device of claim 2, wherein the protective sleeves comprise an upper protective sleeve and a lower protective sleeve, the upper and lower protective sleeves being separated when the peripheral and central shock absorbing springs are in an initial state and contacting each other when the peripheral and central shock absorbing springs are compressed.
5. The elevator hoistway protecting device according to claim 1, wherein the support base plate comprises reinforcing bars arranged longitudinally and transversely and a protection plate arranged on the reinforcing bars, the reinforcing bars are connected by welding, the outermost reinforcing bars form a square outer frame, and the anchoring members are fixedly arranged on the outer wall of the outer frame.
6. The hoistway protection device of claim 1, wherein the protective mesh is woven from hemp rope, or from nylon rope, or from steel wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920270622.4U CN209874371U (en) | 2019-03-04 | 2019-03-04 | Elevator well protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920270622.4U CN209874371U (en) | 2019-03-04 | 2019-03-04 | Elevator well protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209874371U true CN209874371U (en) | 2019-12-31 |
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ID=68954317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920270622.4U Expired - Fee Related CN209874371U (en) | 2019-03-04 | 2019-03-04 | Elevator well protector |
Country Status (1)
| Country | Link |
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| CN (1) | CN209874371U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113863700A (en) * | 2021-10-30 | 2021-12-31 | 中国十七冶集团有限公司 | Automatic elevator shaft protection device and operation method |
| CN114293798A (en) * | 2022-01-11 | 2022-04-08 | 中建四局第六建设有限公司 | Adjustable anti-falling platform for elevator shaft opening |
| CN116856743A (en) * | 2023-07-21 | 2023-10-10 | 中建八局第四建设有限公司 | Portable elevator shaft hard protection device |
-
2019
- 2019-03-04 CN CN201920270622.4U patent/CN209874371U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113863700A (en) * | 2021-10-30 | 2021-12-31 | 中国十七冶集团有限公司 | Automatic elevator shaft protection device and operation method |
| CN114293798A (en) * | 2022-01-11 | 2022-04-08 | 中建四局第六建设有限公司 | Adjustable anti-falling platform for elevator shaft opening |
| CN116856743A (en) * | 2023-07-21 | 2023-10-10 | 中建八局第四建设有限公司 | Portable elevator shaft hard protection device |
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Granted publication date: 20191231 Termination date: 20210304 |