CN214141107U - Elevator cab overhauls safety arrangement - Google Patents
Elevator cab overhauls safety arrangement Download PDFInfo
- Publication number
- CN214141107U CN214141107U CN202120036612.1U CN202120036612U CN214141107U CN 214141107 U CN214141107 U CN 214141107U CN 202120036612 U CN202120036612 U CN 202120036612U CN 214141107 U CN214141107 U CN 214141107U
- Authority
- CN
- China
- Prior art keywords
- screw rod
- base plate
- plate
- rod
- install bin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000001681 protective effect Effects 0.000 claims abstract description 8
- 238000012423 maintenance Methods 0.000 claims description 15
- 230000005540 biological transmission Effects 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims 1
- 230000005484 gravity Effects 0.000 abstract description 4
- 238000001125 extrusion Methods 0.000 abstract description 3
- 206010040007 Sense of oppression Diseases 0.000 abstract description 2
- 230000003139 buffering effect Effects 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 6
- 239000000758 substrate Substances 0.000 description 4
- 230000005389 magnetism Effects 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Images
Landscapes
- Cage And Drive Apparatuses For Elevators (AREA)
Abstract
The utility model discloses an elevator sedan-chair top overhauls safety arrangement, including the bottom plate, still including increase device life's protective structure, the elevation structure of being convenient for to adjust and the high alarm structure of security, the inside of bottom plate is provided with the fly leaf, and protective structure sets up inside the bottom plate of fly leaf bottom, the stand is installed on the top of fly leaf, and the top of stand extends to the top of bottom plate, the top fixed mounting of stand has the base plate, and one side of base plate bottom installs servo motor, the transfer line is installed to one side of servo motor, and the transfer line outer wall cover of base plate one side is equipped with the driving gear. The utility model discloses an influence stand of elevator gravity drives the fly leaf and moves down to make the skew of first bracing piece, the slider on the extrusion horizontal pole slides, and buffer spring takes place deformation simultaneously, and the increase buffering reduces the oppression power, and this structure is favorable to improving device's life.
Description
Technical Field
The utility model relates to an elevator overhauls technical field, specifically is an elevator cab overhauls safety arrangement.
Background
Along with the development of society and the progress of cities, people gather in cities more and more, the area of land is limited, the expansion of living space naturally develops towards the air, a high-rise building is constructed, meanwhile, a lifting elevator is required, when the elevator is used in daily life, the problem that the elevator breaks down frequently occurs, the elevator needs to be overhauled, when the elevator car roof is overhauled, a device is required to support the car roof to prevent the elevator car roof from collapsing, and the conventional elevator car roof overhauling safety protection device has many defects.
The first and the traditional elevator car roof maintenance safety protection devices do not have the lifting adjusting function, so that the elevator car roof maintenance safety protection devices are suitable for different maintenance environments;
the second and the traditional elevator car roof maintenance safety protection devices do not have a safety function, accidents are easy to happen during maintenance, and maintenance personnel cannot be informed in time;
thirdly, traditional elevator cab overhauls safety arrangement does not have safeguard function, and the excessive oppression of easy emergence device is damaged when leading to the use device.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an elevator cab overhauls safety arrangement to the problem that does not have lift adjustment function, does not have the safety function and does not have safeguard function who provides in solving above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a safety protection device for elevator car top maintenance comprises a bottom plate, a protection structure for prolonging the service life of the device, a lifting structure convenient to adjust and an alarm structure with high safety;
a movable plate is arranged inside the bottom plate, and the protection structure is arranged inside the bottom plate at the bottom end of the movable plate;
the lifting mechanism comprises a movable plate, a base plate, a servo motor, a transmission rod, a driving gear, a top plate and a lifting structure, wherein the top end of the movable plate is provided with an upright column, the top end of the upright column extends to the upper part of a bottom plate, the top end of the upright column is fixedly provided with the base plate, one side of the bottom end of the base plate is provided with the servo motor, one side of the servo motor is provided with the transmission rod, the outer wall of the transmission rod on one side of the base plate is sleeved with the driving gear, the upper part of the base plate is provided with the top plate, and the lifting structure is arranged in the base plate;
the roof top, the both sides of roof top all are provided with the supporting seat, and are provided with the install bin above the roof between supporting seat one side, the both sides of install bin all extend to the inside of supporting seat one side, and the inside both sides of install bin all are provided with shock transducer, the install bin internally mounted of shock transducer one side has the PLC controller, and alarm structure sets up inside the install bin of PLC controller one side.
Preferably, the alarm structure includes the speaker, the speaker sets up in the inside top of installation box of PLC controller one side, and installs the axle sheath around the installation box of speaker one side between the inner wall of both ends, the electro-magnet is installed to the inside bottom of installation box of axle sheath one side, the outer wall of axle sheath transversely is provided with the stick up pole, the fixed plate is all installed to the both sides of stick up pole, the metal block is installed to the fixed plate bottom of electro-magnet top, and the fixed plate top of speaker below installs the contact point, all install auxiliary spring between the speaker of contact point both sides and the fixed plate.
Preferably, one side of the tilting rod extends to the lower part of the loudspeaker, and the other side of the tilting rod extends to the upper part of the electromagnet.
Preferably, the protection structure comprises a buffer spring, a sliding block, a first supporting rod and a cross rod, the cross rod is transversely arranged at the front end and the rear end between the inner walls of the two sides of the bottom plate, the buffer spring is sleeved on the two sides of the outer wall of the buffer spring, the sliding block is sleeved on the outer wall of the cross rod on one side of the buffer spring, one side of the buffer spring is welded with the sliding block and is in sliding connection with the cross rod, the first supporting rod is installed on the top of the sliding block through an articulated element, and the top of the first supporting rod is connected with the movable plate through the articulated element.
Preferably, the lifting structure comprises a sleeve, a second support rod, a first lead screw, a belt pulley, a driven gear and a second lead screw, the first lead screw is arranged on one side inside the base plate through a rotating shaft, the second lead screw is arranged on one side inside the base plate at one end of the first lead screw through a rotating shaft, one sides of the first lead screw and the second lead screw penetrate through one side of the base plate, the driven gear is arranged on the outer wall of the first lead screw at the top end of the driving gear, the outer walls of the first lead screw and the second lead screw on one side of the driven gear are sleeved with the belt pulley, and the belt is connected between the belt pulleys; the outer walls of the first screw rod and the second screw rod are connected with two sleeves in a sliding mode, and the top ends of the sleeves are provided with second supporting rods through hinge pieces.
Preferably, the driving gear and the driven gear are identical in size, and are connected by a mesh.
Preferably, the top end of the second support rod penetrates through the upper portion of the base plate, and the top end of the second support rod is connected with the top plate through the hinge piece.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the servo motor is started to work through the servo motor, the transmission rod, the driving gear and the driven gear, the transmission rod drives the driving gear to rotate, the driven gear is driven, the first screw rod and the second screw rod can simultaneously rotate under the action of the belt and the belt pulley, the sleeve can move under the matching of the sleeve threads, and therefore the second support rod is pushed to deflect, the top plate can vertically move until the support seat is contacted with the top of the elevator car, and the structure improves the applicability of the device;
(2) the upright posts, the movable plate and the first supporting rods are arranged, the upright posts drive the movable plate to move downwards under the influence of the gravity of the elevator, so that the first supporting rods are deviated, the sliding blocks on the cross rods are extruded to slide, meanwhile, the buffer springs deform, the buffer is increased, the compression force is reduced, and the protection function of the device is improved;
(3) through being provided with vibrations sensor, PLC controller and electro-magnet, the device takes place vibrations, and vibrations sensor accepts the signal, passes to the PLC controller with the signal, and control direct control electro-magnet circular telegram produces magnetism, produces the adsorption affinity to the metal block, sticks up the pole upset, and auxiliary spring takes place deformation, and up to the bottom contact of contact point and speaker, the speaker circular telegram sends out the police dispatch newspaper, and this structure has realized alarming function.
Drawings
FIG. 1 is a schematic sectional view of the front view of the present invention;
FIG. 2 is a schematic top sectional view of the base plate according to the present invention;
FIG. 3 is a schematic top sectional view of the bottom plate of the present invention;
fig. 4 is an enlarged schematic structural diagram of a in fig. 1 according to the present invention.
In the figure: 1. a supporting seat; 2. a shock sensor; 3. a PLC controller; 4. raising the rod; 5. a fixing plate; 6. a metal block; 7. an electromagnet; 8. a protective structure; 801. a buffer spring; 802. a slider; 803. a first support bar; 804. a cross bar; 9. a lifting structure; 901. a sleeve; 902. a second support bar; 903. a first lead screw; 904. a belt; 905. a belt pulley; 906. a driven gear; 907. a second lead screw; 10. installing a box; 11. a top plate; 12. a substrate; 13. a transmission rod; 14. a driving gear; 15. a servo motor; 16. a base plate; 17. a movable plate; 18. a column; 19. a speaker; 20. an auxiliary spring; 21. a shaft sheath; 22. a point of contact.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1: referring to fig. 1-4, an elevator car top maintenance safety protection device comprises a bottom plate 16, a protection structure 8 for prolonging the service life of the device, a lifting structure 9 convenient to adjust, and an alarm structure with high safety;
a movable plate 17 is arranged inside the bottom plate 16, and the protective structure 8 is arranged inside the bottom plate 16 at the bottom end of the movable plate 17;
the top end of the movable plate 17 is provided with an upright post 18, the top end of the upright post 18 extends to the upper side of the bottom plate 16, the top end of the upright post 18 is fixedly provided with a base plate 12, one side of the bottom end of the base plate 12 is provided with a servo motor 15, the type of the servo motor 15 can be RDX-201-V36F5E13, one side of the servo motor 15 is provided with a transmission rod 13, the outer wall of the transmission rod 13 on one side of the base plate 12 is sleeved with a driving gear 14, the upper side of the base plate 12 is provided with a top plate 11, and the lifting structure 9 is arranged inside the base plate 12;
both sides on 11 tops of roof all are provided with supporting seat 1, and are provided with install bin 10 above roof 11 between supporting seat 1 one side, and the both sides of install bin 10 all extend to the inside of supporting seat 1 one side, and the inside both sides of install bin 10 all are provided with vibrations sensor 2, and install bin 10 internally mounted of vibrations sensor 2 one side has PLC controller 3, and this PLC controller 3's model can be FHR-211, and alarm structure sets up inside install bin 10 of PLC controller 3 one side.
Referring to fig. 1-4, an elevator car top maintenance safety protection device further comprises an alarm structure, the alarm structure comprises a loudspeaker 19, the loudspeaker 19 is arranged at the top end inside an installation box 10 on one side of the PLC controller 3, a shaft sheath 21 is arranged between the inner walls of the front end and the rear end of the installation box 10 on one side of the loudspeaker 19, an electromagnet 7 is arranged at the bottom end inside the installation box 10 on one side of the shaft sheath 21, a raising rod 4 is transversely arranged on the outer wall of the shaft sheath 21, fixing plates 5 are arranged on two sides of the raising rod 4, a metal block 6 is arranged at the bottom end of the fixing plate 5 above the electromagnet 7, a contact point 22 is arranged at the top end of the fixing plate 5 below the loudspeaker 19, and an auxiliary spring 20 is arranged between the loudspeaker 19 and the fixing plate 5 on two sides of the contact point 22;
one side of the tilting rod 4 extends to the lower part of the loudspeaker 19, and the other side of the tilting rod 4 extends to the upper part of the electromagnet 7;
specifically, as shown in fig. 1 and 4, when the mechanism is used, the device vibrates, the vibration sensor 2 receives a signal, the signal is transmitted to the PLC controller 3, the electromagnet 7 is controlled to be directly controlled to be electrified to generate magnetism, an adsorption force is generated on the metal block 6, the tilting rod 4 is overturned, the auxiliary spring 20 is deformed until the contact point 22 is contacted with the bottom end of the loudspeaker 19, and the loudspeaker 19 is electrified to give an alarm.
Example 2: the protective structure 8 comprises a buffer spring 801, a sliding block 802, a first supporting rod 803 and a cross rod 804, wherein the cross rod 804 is transversely arranged at the front end and the rear end between the inner walls of the two sides of the bottom plate 16, the buffer spring 801 is sleeved on the two sides of the outer wall of the buffer spring 801, the sliding block 802 is sleeved on the outer wall of the cross rod 804 on one side of the buffer spring 801, one side of the buffer spring 801 is welded with the sliding block 802, the sliding block 802 is connected with the cross rod 804 in a sliding manner, the first supporting rod 803 is arranged at the top end of the sliding block 802 through a hinge, and the top end of the first supporting rod 803 is connected with the movable plate 17 through the hinge;
specifically, as shown in fig. 1 and 3, when the mechanism is used, the movable plate 17 is driven by the upright 18 under the influence of the gravity of the elevator to move downward, so that the first supporting rod 803 is deflected, the sliding block 802 on the extrusion cross bar 804 slides, and meanwhile, the buffer spring 801 deforms to increase the buffer and reduce the pressing force.
Example 3: the lifting structure 9 comprises a sleeve 901, a second support rod 902, a first screw rod 903, a belt 904, a belt pulley 905, a driven gear 906 and a second screw rod 907, wherein the first screw rod 903 is arranged on one side inside the substrate 12 through a rotating shaft, the second screw rod 907 is arranged on one side inside the substrate 12 at one end of the first screw rod 903 through a rotating shaft, one sides of the first screw rod 903 and the second screw rod 907 penetrate through one side of the substrate 12, the driven gear 906 is arranged on the outer wall of the first screw rod 903 at the top end of the driving gear 14, the outer walls of the first screw rod 903 and the second screw rod 907 on one side of the driven gear 906 are sleeved with belt pulleys 905, and the belt 904 is connected between the belt pulleys 905; the outer walls of the first screw rod 903 and the second screw rod 907 are both connected with two sleeves 901 in a sliding manner, and the top ends of the sleeves 901 are both provided with second support rods 902 through hinge pieces;
the driving gear 14 and the driven gear 906 are identical in size, and the driving gear 14 and the driven gear 906 are connected through a mesh;
the top ends of the second support rods 902 penetrate through the upper side of the base plate 12, and the top ends of the second support rods 902 are connected with the top plate 11 through hinges;
specifically, as shown in fig. 1 and fig. 2, when the mechanism is used, the servo motor 15 is started to work, the transmission rod 13 drives the driving gear 14 to rotate, the driven gear 906 is driven, the first screw rod 903 and the second screw rod 907 can simultaneously rotate under the action of the belt 904 and the belt pulley 905, the sleeve 901 can move under the matching of the threads of the sleeve 901, and therefore the second support rod 902 is pushed to deflect, and the top plate 11 moves up and down until the support seat 1 is contacted with the top of the elevator car.
The working principle is as follows: when the device is used, firstly, the device is moved to a specified position, the height of the device is adjusted as required, the servo motor 15 is started to work, the transmission rod 13 drives the driving gear 14 to rotate, the driven gear 906 is driven, meanwhile, the first screw rod 903 and the second screw rod 907 can be simultaneously rotated under the action of the belt 904 and the belt pulley 905, the sleeve 901 can be moved under the matching of the threads of the sleeve 901, so that the second supporting rod 902 is pushed to be deviated, the top plate 11 is enabled to vertically move until the supporting seat 1 is contacted with the top of an elevator car, and the support of the elevator is completed.
Afterwards, when the device is working, the vertical column 18 is influenced by the gravity of the elevator to drive the movable plate 17 to move downwards, so that the first supporting rod 803 deviates, the sliding block 802 on the extrusion cross rod 804 slides, and meanwhile, the buffer spring 801 deforms to increase the buffer and reduce the pressing force.
Finally, if the elevator is unexpected, the device shakes, the vibration sensor 2 receives signals, the signals are transmitted to the PLC controller 3, the electromagnet 7 is controlled to be directly controlled to be electrified to generate magnetism, adsorption force is generated on the metal block 6, the tilting rod 4 is overturned, the auxiliary spring 20 deforms until the contact point 22 is in contact with the bottom end of the loudspeaker 19, the loudspeaker 19 is electrified to send an alarm, and the overhaul personnel can be informed of the occurrence of the accident.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (7)
1. The utility model provides an elevator cab overhauls safety arrangement, includes bottom plate (16), its characterized in that: the device also comprises a protective structure (8) for prolonging the service life of the device, a lifting structure (9) convenient to adjust and an alarm structure with high safety;
a movable plate (17) is arranged inside the bottom plate (16), and the protective structure (8) is arranged inside the bottom plate (16) at the bottom end of the movable plate (17);
the lifting mechanism is characterized in that an upright post (18) is mounted at the top end of the movable plate (17), the top end of the upright post (18) extends to the upper side of the bottom plate (16), a base plate (12) is fixedly mounted at the top end of the upright post (18), a servo motor (15) is mounted at one side of the bottom end of the base plate (12), a transmission rod (13) is mounted at one side of the servo motor (15), a driving gear (14) is sleeved on the outer wall of the transmission rod (13) at one side of the base plate (12), a top plate (11) is arranged above the base plate (12), and the lifting structure (9) is arranged inside the base plate (12);
the utility model discloses a vibration sensor, including roof (11), supporting seat (1), install bin (10) and warning structure, the both sides on roof (11) top all are provided with supporting seat (1), and roof (11) top between supporting seat (1) one side is provided with install bin (10), the both sides of install bin (10) all extend to the inside of supporting seat (1) one side, and the inside both sides of install bin (10) all are provided with vibration sensor (2), install bin (10) internally mounted of vibration sensor (2) one side has PLC controller (3), and warning structure sets up inside install bin (10) of PLC controller (3) one side.
2. The elevator cab maintenance safety protection device of claim 1, characterized in that: alarm structure includes speaker (19), speaker (19) set up in the inside top of install bin (10) of PLC controller (3) one side, and install between install bin (10) front and back both ends inner wall of speaker (19) one side axle sheath (21), electro-magnet (7) are installed to the inside bottom of install bin (10) of axle sheath (21) one side, the outer wall of axle sheath (21) transversely is provided with sticks up pole (4), fixed plate (5) are all installed to the both sides of stick up pole (4), metal block (6) are installed to fixed plate (5) bottom of electro-magnet (7) top, and fixed plate (5) top of speaker (19) below install contact point (22), all install between speaker (19) and fixed plate (5) of contact point (22) both sides auxiliary spring (20).
3. The elevator cab maintenance safety protection device of claim 2, characterized in that: one side of the tilting rod (4) extends to the lower part of the loudspeaker (19), and the other side of the tilting rod (4) extends to the upper part of the electromagnet (7).
4. The elevator cab maintenance safety protection device of claim 1, characterized in that: protective structure (8) include buffer spring (801), slider (802), first bracing piece (803) and horizontal pole (804), both ends around horizontal pole (804) all transversely set up between bottom plate (16) both sides inner wall, and the both sides of buffer spring (801) outer wall all overlap and be equipped with buffer spring (801), horizontal pole (804) outer wall cover of buffer spring (801) one side is equipped with slider (802), one side of buffer spring (801) all with slider (802) welding, and slider (802) and horizontal pole (804) sliding connection, first bracing piece (803) are installed through the articulated elements in the top of slider (802), and the top of first bracing piece (803) is connected with fly leaf (17) through the articulated elements.
5. The elevator cab maintenance safety protection device of claim 1, characterized in that: the lifting structure (9) comprises a sleeve (901), a second supporting rod (902), a first screw rod (903), a belt (904), a belt pulley (905), a driven gear (906) and a second screw rod (907), wherein the first screw rod (903) is arranged on one side inside the base plate (12) through a rotating shaft, the second screw rod (907) is arranged on one side inside the base plate (12) at one end of the first screw rod (903) through a rotating shaft, one sides of the first screw rod (903) and the second screw rod (907) penetrate through one side of the base plate (12), the driven gear (906) is arranged on the outer wall of the first screw rod (903) at the top end of the driving gear (14), the outer walls of the first screw rod (903) and the second screw rod (907) on one side of the driven gear (906) are sleeved with the belt pulley (905), and the belt pulley (904) is connected between the belt pulleys (905); the outer walls of the first screw rod (903) and the second screw rod (907) are connected with two sleeves (901) in a sliding mode, and the top ends of the sleeves (901) are provided with second supporting rods (902) through hinge pieces.
6. The elevator cab maintenance safety protection device of claim 5, characterized in that: the driving gear (14) and the driven gear (906) are identical in size, and the driving gear (14) and the driven gear (906) are connected through a mesh.
7. The elevator cab maintenance safety protection device of claim 5, characterized in that: the top of second bracing piece (902) all runs through to the top of base plate (12), and the top of second bracing piece (902) all is connected with roof (11) through the articulated elements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120036612.1U CN214141107U (en) | 2021-01-07 | 2021-01-07 | Elevator cab overhauls safety arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120036612.1U CN214141107U (en) | 2021-01-07 | 2021-01-07 | Elevator cab overhauls safety arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214141107U true CN214141107U (en) | 2021-09-07 |
Family
ID=77547005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120036612.1U Expired - Fee Related CN214141107U (en) | 2021-01-07 | 2021-01-07 | Elevator cab overhauls safety arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214141107U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114673872A (en) * | 2022-02-25 | 2022-06-28 | 江苏峘宇建设有限公司 | Monitoring observation system based on construction engineering reconnaissance |
-
2021
- 2021-01-07 CN CN202120036612.1U patent/CN214141107U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114673872A (en) * | 2022-02-25 | 2022-06-28 | 江苏峘宇建设有限公司 | Monitoring observation system based on construction engineering reconnaissance |
| CN114673872B (en) * | 2022-02-25 | 2024-05-07 | 江苏峘宇建设有限公司 | Monitoring and observing system based on construction engineering investigation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN214141107U (en) | Elevator cab overhauls safety arrangement | |
| AU1964700A (en) | Crane, especially a self-propelled crane | |
| CN117088260B (en) | Damper type hanging cabin protection device of shore container bridge crane | |
| CN104444823B (en) | Novel bridge frame crane | |
| CN212807552U (en) | Automatic drop hammer device of drop hammer impact testing machine | |
| CN210315304U (en) | Road safety limit for height device | |
| CN210366695U (en) | Online turnover mechanism on automobile chassis assembly line | |
| CN109629891B (en) | Falling protector of lifting garage and working method thereof | |
| CN216662137U (en) | Anti-collision device for safe lifting of construction elevator | |
| CN213956790U (en) | Automobile bumper bar testing device | |
| CN214656411U (en) | Steel construction box bridge decorative board adjusting positioning device | |
| CN213231267U (en) | Bridge crane with telescopic suspension of two sides of main beam | |
| CN210825157U (en) | Mechanical limiting device for hoist | |
| CN217732348U (en) | Safety detection device for construction elevator | |
| CN218405141U (en) | Traffic guide sign device for expressway service area | |
| CN214828189U (en) | Derailment prevention device for construction elevator | |
| CN214326930U (en) | Dedicated wire rope bearing roller device of door machine cantilever crane | |
| CN221093647U (en) | Auxiliary device for reconstructing three-dimensional structure of mine | |
| CN210219643U (en) | Limiting device for preventing lamp panel from falling | |
| CN112551296A (en) | Elevator stopping device and elevator comprising same | |
| CN215643409U (en) | A warning device for wisdom building site | |
| CN209929468U (en) | Base station ground heightening frame | |
| CN218860183U (en) | Half-door machine anti-collision structure | |
| CN219872441U (en) | Lane state control cabinet | |
| CN218025196U (en) | Safety protection type vehicle chassis overhauls equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210907 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |