CN207451481U - A kind of building tower crane hoisting mechanism power-off protector - Google Patents
A kind of building tower crane hoisting mechanism power-off protector Download PDFInfo
- Publication number
- CN207451481U CN207451481U CN201721444245.9U CN201721444245U CN207451481U CN 207451481 U CN207451481 U CN 207451481U CN 201721444245 U CN201721444245 U CN 201721444245U CN 207451481 U CN207451481 U CN 207451481U
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- Prior art keywords
- overload protecting
- protecting mechanism
- overload
- main
- hollow housing
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Abstract
The utility model discloses a kind of building tower crane hoisting mechanism power-off protectors; including connecting substrate and screw up the bolt inside connecting substrate; two supporting vertical plates are fixed in the upper surface of the connecting substrate; an axle sleeve is fixed at the top of one of them described supporting vertical plate; a main hollow housing is fixed in the inside of axle sleeve by bearing; main hollow housing end face fixes a connecting plate centrally through bolt; the first rotation axis being provided centrally with its integral structure of connecting plate end face, the end face of the first rotation axis fix an overload protecting mechanism.The utility model is when in use; once there is circut breaking in the power supply of motor; the device can be braked or be increased the effect of frictional force in time; so that the phenomenon that high-level weight occurs braking or slowly fall; so as to prevent the generation of the accident phenomenon caused by weight high-speed falling, in addition, the device has overload protecting mechanism; the object for enabling to weight larger is not lifted, and prevents motor from burning out.
Description
Technical field
The utility model is related to building machinery technical fields, are specially a kind of building tower crane hoisting mechanism power-off protection
Device.
Background technology
At present, building trade is each essential industry of country, at work, in order to by weight from it is low longitudinal direction height
High longitudinal direction height is promoted, can all use tower crane, and the capital equipment for being used to provide power source in tower crane is motor, and it is electric
Motivation in actual use, particularly when weight is being promoted, if there is power-off, will cause motor directly to be shut down,
Weight is under gravity, it is more likely that phenomenon of falling causes serious accident to occur.
Utility model content
The purpose of this utility model is to provide a kind of building tower crane hoisting mechanism power-off protector, to solve the above-mentioned back of the body
The problem of being proposed in scape technology.
To achieve the above object, the utility model provides following technical solution：A kind of building tower crane hoisting mechanism power-off
Protector including connecting substrate and screws up the bolt inside connecting substrate, and two supports are fixed in the upper surface of the connecting substrate
Riser, fixes an axle sleeve at the top of one of them described supporting vertical plate, and it is hollow that a master by bearing is fixed in the inside of the axle sleeve
Housing, the main hollow housing end face fix a connecting plate centrally through bolt, and the center of the connecting plate end face is set
The first rotation axis with its integral structure is equipped with, the end face of first rotation axis fixes an overload protecting mechanism, described
One second rotation axis is fixed at the center of overload protecting mechanism end face, the second rotation axis end face be provided centrally with and its
The mounting flange of integral structure is provided centrally with main hollow structure, the main hollow shell inside the main hollow housing
A movable plate is installed in the inside of the body other end, and one end of the movable plate is positioned at one pressure of the inside of main hollow structure installation
The high-pressure spiral spring of contracting state, the side of the movable plate are socketed an annular ring, are provided on the inside of the main hollow housing
For annular ring movement mobile groove structure, the connecting shaft being provided centrally with its integral type of the movable plate end face,
The connecting shaft runs through the end face of the main hollow housing and the master with its integral structure is provided with positioned at external one end
Cylindrical shell, one end of the main cylindrical shell are provided with main stairstepping bulge-structure, the center of the principal post shape enclosure interior
A permanent magnetism scapus is inlayed, an electromagnetism fixing seal mechanism is fixed at the top of another described supporting vertical plate.
It is used preferably, the overload protecting mechanism includes overload protecting mechanism with main hollow housing, overload protecting mechanism
Main hollow section, overload protecting mechanism column spinner, overload protecting mechanism are secondary hollow with secondary hollow housing, overload protecting mechanism
Section, overload protecting mechanism movable plate, overload protecting mechanism helical spring, overload protecting mechanism push rod and overload protection
Mechanism semi-circular recesses structure.
Preferably, the overload protecting mechanism fixes company with the center of main hollow housing end face with the first rotation axis
It connects, the overload protecting mechanism is the main hollow section of the overload protecting mechanism with the center inside main hollow housing, described
Overload protecting mechanism is protected with main hollow housing in one overload of inside socket positioned at the main hollow section of the overload protecting mechanism
Mechanism column spinner is protected, the overload protecting mechanism is provided with multiple and its integral structure mistake with the side of main hollow housing
The secondary hollow housing of protection mechanism is carried, the overload protecting mechanism is during overload protecting mechanism is secondary with the inside of secondary hollow housing
Empty interval, the inside in the secondary hollow section of the overload protecting mechanism is positioned at the main hollow section of the overload protecting mechanism
End face places an overload protecting mechanism movable plate, and the secondary hollow section of the overload protecting mechanism is protected in place in the overload
Shield mechanism is with fixing an overload protecting mechanism helical spring, the overload protecting mechanism movable plate between one end of movable plate
End face be provided with overload protecting mechanism push rod with its integral structure, and the overload protecting mechanism push rod runs through
The main hollow housing of the overload protecting mechanism, and positioned at the inside in the main hollow section of the overload protecting mechanism, the mistake
It with the one end in hollow section is led is being semicircular structure positioned at the overload protecting mechanism that protection mechanism, which is carried, with push rod, the overload
Protection mechanism is provided with to place the overload protecting mechanism of the overload protecting mechanism push rod end with the side of column spinner
With semi-circular recesses structure, the overload protecting mechanism fixes one first rotation axis with one end of column spinner.
Preferably, the initial length of the overload protecting mechanism helical spring is more than overload protecting mechanism pair
The length in hollow section.
Preferably, the electromagnetism fixing seal mechanism is solid with main cylindrical shell, electromagnetism including electromagnetism fixing seal mechanism
Determine the secondary cylindrical shell of sealing mechanism, electromagnetism fixing seal mechanism iron core, electromagnetism fixing seal mechanism coil and electromagnetism to consolidate
Determine sealing mechanism stepped groove structure.
Preferably, the electromagnetism fixing seal mechanism is provided with and its integral structure with one end of main cylindrical shell
Electromagnetism fixing seal mechanism inlays one with secondary cylindrical shell, the electromagnetism fixing seal mechanism with the center of principal post shape enclosure interior
The electromagnetism fixing seal mechanism iron core, and the electromagnetism fixing seal mechanism with the side of iron core be socketed an electromagnetism fix it is close
Sealing mechanism coil, the electromagnetism fixing seal mechanism subpost shape shell one end face be provided centrally with the electromagnetism fix it is close
Sealing mechanism stepped groove structure.
Preferably, the electromagnetism fixing seal mechanism is handled with the surface of stepped groove structure by rough surface.
Preferably, when electromagnetism fixing seal mechanism enters electric current, positioned at permanent magnetism scapus one end magnetism with it is described forever
The magnetism of magnet column end is identical.
Compared with prior art, the beneficial effects of the utility model are：Once when the utility model is used, motor
There is circut breaking in power supply, which can be braked or increased the effect of frictional force in time, so that high-level
The phenomenon that weight occurs braking or slowly fall, so as to prevent the hair of the accident phenomenon caused by weight high-speed falling
Raw, in addition, the device has overload protecting mechanism, the object for enabling to weight larger is not lifted, and prevents motor from burning out.
Description of the drawings
Fig. 1 is a kind of complete section structure diagram of building tower crane hoisting mechanism power-off protector of the utility model；
Fig. 2 is that the structure of overload protecting mechanism in a kind of building tower crane hoisting mechanism power-off protector of the utility model is shown
It is intended to；
Fig. 3 is the complete of electromagnetism fixing seal mechanism in a kind of building tower crane hoisting mechanism power-off protector of the utility model
Cut open structure diagram；
In figure：1, connecting substrate, 2, bolt, 3, supporting vertical plate, 4, axle sleeve, 5, main hollow housing, 6, connecting plate, 7, first
Rotation axis, 8, overload protecting mechanism, 81, overload protecting mechanism main hollow housing, 82, the main hollow area of overload protecting mechanism
Between, 83, overload protecting mechanism column spinner, 84, overload protecting mechanism secondary hollow housing, 85, in overload protecting mechanism pair
Empty interval, 86, overload protecting mechanism movable plate, 87, overload protecting mechanism helical spring, 88, overload protecting mechanism is with pushing away
Bar, 89, overload protecting mechanism semi-circular recesses structure, 9, the second rotation axis, 10, mounting flange, 11, main hollow structure,
12, high-pressure spiral spring, 13, movable plate, 14, annular ring, 15, mobile groove structure, 16, connecting shaft, 17, main cylindrical shell,
18, permanent magnetism scapus, 19, main stairstepping bulge-structure, 20, electromagnetism fixing seal mechanism, 201, electromagnetism fixing seal mechanism master
Cylindrical shell, 202, electromagnetism fixing seal mechanism secondary cylindrical shell, 203, electromagnetism fixing seal mechanism iron core, 204, electromagnetism
Fixing seal mechanism coil, 205, electromagnetism fixing seal mechanism stepped groove structure.
Specific embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
It clearly and completely describes, it is clear that the described embodiments are only a part of the embodiments of the utility model rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without making creative work
All other embodiments obtained shall fall within the protection scope of the present invention.
Referring to Fig. 1, a kind of embodiment provided by the utility model：Including connecting substrate 1 and screw up in connecting substrate 1
Two supporting vertical plates 3 are fixed in the bolt 2 in portion, the upper surface of the connecting substrate 1, and the top of one of them supporting vertical plate 3 is consolidated
A main hollow housing 5 is fixed in a fixed axle sleeve 4, the inside of the axle sleeve 4 by bearing, in main 5 end face of hollow housing
The heart fixes a connecting plate 6, the first rotation being provided centrally with its integral structure of 6 end face of connecting plate by bolt 2
Shaft 7, the end face of first rotation axis 7 fix an overload protecting mechanism 8, in 8 end face of overload protecting mechanism
The heart fixes one second rotation axis 9, the connecting flange being provided centrally with its integral structure of 9 end face of the second rotation axis
Disk 10 is provided centrally with main hollow structure 11, the inside of main 5 other end of hollow housing inside the main hollow housing 5
One movable plate 13 is installed, a compressive state is being installed in one end of the movable plate 13 positioned at the inside of the main hollow structure 11
High-pressure spiral spring 12, the side of the movable plate 13 are socketed an annular ring 14, and the inside setting of the main hollow housing 5 is useful
In the mobile groove structure 15 that annular ring 14 moves, the connection being provided centrally with its integral type of 13 end face of movable plate
Axis 16, the connecting shaft 16 run through the end face of the main hollow housing 5 and are provided with and its integral type positioned at external one end
The main cylindrical shell 17 of structure, one end of the main cylindrical shell 17 are provided with main stairstepping bulge-structure 19, the principal post shape
A permanent magnetism scapus 18 is inlayed at center inside housing 17, and an electromagnetism fixing seal is fixed at the top of another supporting vertical plate 3
Mechanism 20；When electromagnetism fixing seal mechanism 20 is into electric current, the magnetic and permanent magnetism scapus positioned at 18 one end of permanent magnetism scapus
The magnetism of 18 ends is identical.
Referring to Fig. 2, the overload protecting mechanism 8 includes overload protecting mechanism main hollow housing 81, overload protection machine
The main hollow section 82 of structure, overload protecting mechanism column spinner 83, overload protecting mechanism secondary hollow housing 84, overload protection machine
The secondary hollow section 85 of structure, overload protecting mechanism movable plate 86, overload protecting mechanism helical spring 87, overload protecting mechanism
With push rod 88 and overload protecting mechanism semi-circular recesses structure 89；Main 81 end face of hollow housing of the overload protecting mechanism
Center be fixedly connected with the first rotation axis 9, the overload protecting mechanism with the center inside main hollow housing 81 be the mistake
The main hollow section 82 of protection mechanism is carried, the overload protecting mechanism is with main hollow housing 81 positioned at the overload protecting mechanism
Overload protecting mechanism column spinner 83, the main hollow housing of the overload protecting mechanism are socketed with the inside in the hollow section 82 of master
81 side is provided with multiple overload protecting mechanism secondary hollow housing 84, overload protecting mechanisms with its integral structure
Inside with secondary hollow housing 84 is the secondary hollow section 85 of overload protecting mechanism, the hollow section of overload protecting mechanism pair
Overload protecting mechanism activity is placed in the end face positioned at the main hollow section 82 of the overload protecting mechanism in 85 inside
Plate 86, the secondary hollow section 85 of the overload protecting mechanism is between the one end of the overload protecting mechanism with movable plate 86
An overload protecting mechanism helical spring 87 is fixed, the overload protecting mechanism is provided with the end face of movable plate 86 and one
The overload protecting mechanism push rod 88 of body formula structure, and overload protecting mechanism push rod 88 runs through the overload protecting mechanism
With main hollow housing 81, and positioned at the inside in the main hollow section 82 of the overload protecting mechanism, the overload protecting mechanism use
Push rod 88 with the one end in main hollow section 82 is being semicircular structure positioned at the overload protecting mechanism, the overload protecting mechanism
The overload protecting mechanism for being provided with to place 88 end of overload protecting mechanism push rod with the side of column spinner 83 uses half
Circular groove structure 89, the overload protecting mechanism fix one first rotation axis 7 with one end of column spinner 83；The overload protection
Mechanism is more than the length in the secondary hollow section 85 of the overload protecting mechanism, groundwork with the initial length of helical spring 87
Principle is：Maximum rotation dynamics when being rotated using overload protecting mechanism with the elastic force effect of helical spring 87, when lifting object
Quality when being more than overload protecting mechanism with the elastic force of helical spring 87, overload protecting mechanism push rod 88 can depart from overload protection
Mechanism semi-circular recesses structure 89, so that overload protecting mechanism is rotated with main hollow housing 81 and overload protecting mechanism
Relative rotation occurs for column 83, so that weight will not be elevated, and motor can continue to rotate, certain overload protecting mechanism
It should be less than the maximum dynamics that motor can drive with the elastic force of helical spring 87.
Referring to Fig. 3, the electromagnetism fixing seal mechanism 20 include electromagnetism fixing seal mechanism with main cylindrical shell 201,
Electromagnetism fixing seal mechanism is used with secondary cylindrical shell 202, electromagnetism fixing seal mechanism iron core 203, electromagnetism fixing seal mechanism
Coil 204 and electromagnetism fixing seal mechanism stepped groove structure 205；The main cylindrical shell of the electromagnetism fixing seal mechanism
201 one end be provided with the secondary cylindrical shell 202 of the electromagnetism fixing seal mechanism of its integral structure, the electromagnetism is fixed close
Sealing mechanism inlays an electromagnetism fixing seal mechanism iron core 203, and the electromagnetism with the center inside main cylindrical shell 201
Fixing seal mechanism is socketed an electromagnetism fixing seal mechanism coil 204, the electromagnetism fixing seal machine with the side of iron core 203
Structure pair 202 end face of cylindrical shell is provided centrally with the electromagnetism fixing seal mechanism stepped groove structure 205；Institute
The surface for stating electromagnetism fixing seal mechanism stepped groove structure 205 is handled by rough surface, and cardinal principle is：It utilizes
Electromagnetic conversion principle so that electromagnetism fixing seal mechanism iron core 203 can generate magnetism, when electrical connections, turn in electromagnetism
It changes under the action of principle, electromagnetism fixing seal mechanism generates magnetism with the both ends of iron core 203, at this point, being generated with permanent magnetism scapus 18
The active force to repel each other, the magnetism at both ends can carry out effective change effect according to sense of current is changed, once there is electricity
During motivation circut breaking, at this point, electromagnetic action releases, at this point, under the elastic force effect of high-pressure spiral spring 12, main stairstepping is convex
It plays structure 19 to be in close contact with electromagnetism fixing seal mechanism stepped groove structure 205, the frictional force when between the two is more than
During the gravity of lift heavy object, braking action can be played, it, can when frictional force between the two is less than the gravity of hoisting heavy
Play the role of certain buffer deceleration.
Specifically used mode：In utility model works, to the corresponding site that the device is bolted on to tower crane,
Then the center of mounting flange 10 with elevator wheel end face is fixedly connected, it then, will be for connecting the conducting wire string of motor
The power input end of electromagnetism fixing seal mechanism coil 204 is linked to, when electrical connections, in the effect of electromagnetic conversion principle
Under, electromagnetism fixing seal mechanism generates magnetism with the both ends of iron core 203, at this point, the active force to repel each other is generated with permanent magnetism scapus 18,
The magnetism at its both ends can carry out effective change effect according to sense of current is changed, once there is electric motor circuit breaking phenomenon
When, at this point, electromagnetic action releases, at this point, under the elastic force effect of high-pressure spiral spring 12, main stairstepping bulge-structure 19 and electricity
Magnetically fixed sealing mechanism stepped groove structure 205 is in close contact, when frictional force between the two is more than the gravity of hoisting heavy
When, braking action can be played, when frictional force between the two is less than the gravity of hoisting heavy, certain delay can be played
Decelerating effect is rushed, so as to play anti-breaking electro ultrafiltration.
It is obvious to a person skilled in the art that the utility model is not limited to the details of above-mentioned exemplary embodiment, and
And in the case of the spirit or essential attributes without departing substantially from the utility model, it can realize that this practicality is new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this practicality is new
The scope of type is indicated by the appended claims rather than the foregoing description, it is intended that will fall containing in the equivalent requirements of the claims
All changes in justice and scope are embraced therein.Any reference numeral in claim should not be considered as limitation
Involved claim.
Claims (8)
1. a kind of building tower crane hoisting mechanism power-off protector including connecting substrate (1) and screws up internal in connecting substrate (1)
Bolt (2), it is characterised in that：Two supporting vertical plates (3) are fixed in the upper surface of the connecting substrate (1), one of them described branch
An axle sleeve (4) is fixed at the top of support riser (3), a main hollow housing (5), institute are fixed in the inside of the axle sleeve (4) by bearing
That states main hollow housing (5) end face fixes a connecting plate (6) centrally through bolt (2), in connecting plate (6) end face
The heart is provided with fixes an overload protection with the first rotation axis of its integral structure (7), the end face of first rotation axis (7)
One second rotation axis (9), second rotation axis (9) are fixed in mechanism (8), the center of overload protecting mechanism (8) end face
Be provided centrally with and the mounting flange of its integral structure (10) of end face, the internal center of the main hollow housing (5)
Main hollow structure (11) is provided with, a movable plate (13), the movable plate are installed in the inside of main hollow housing (5) other end
(13) one end is installing the high-pressure spiral spring (12) of a compressive state positioned at the inside of the main hollow structure (11), described
The side of movable plate (13) is socketed an annular ring (14), is provided on the inside of the main hollow housing (5) for annular ring (14)
Mobile mobile groove structure (15), the connecting shaft being provided centrally with its integral type of movable plate (13) end face
(16), the connecting shaft (16) through the main hollow housing (5) end face and be provided with positioned at external one end and one
The main cylindrical shell (17) of body formula structure, one end of the main cylindrical shell (17) are provided with main stairstepping bulge-structure (19),
A permanent magnetism scapus (18) is inlayed at the internal center of the main cylindrical shell (17), and the top of another supporting vertical plate (3) is consolidated
A fixed electromagnetism fixing seal mechanism (20).
2. a kind of building tower crane hoisting mechanism power-off protector according to claim 1, it is characterised in that：The overload
Protection mechanism (8) includes the main hollow section (82) of overload protecting mechanism main hollow housing (81), overload protecting mechanism, overload
Protection mechanism column spinner (83), overload protecting mechanism secondary hollow housing (84), the secondary hollow section of overload protecting mechanism
(85), overload protecting mechanism is with movable plate (86), overload protecting mechanism with helical spring (87), overload protecting mechanism push rod
(88) and overload protecting mechanism is with semi-circular recesses structure (89).
3. a kind of building tower crane hoisting mechanism power-off protector according to claim 2, it is characterised in that：The overload
Protection mechanism is fixedly connected with the center of main hollow housing (81) end face with the first rotation axis (9), the overload protecting mechanism
With the center inside main hollow housing (81) hollow section (82), the overload protecting mechanism are led for the overload protecting mechanism
With main hollow housing (81) an overload protection machine is being socketed positioned at the inside of the main hollow section (82) of the overload protecting mechanism
Structure is provided with multiple and its integral structure with column spinner (83), the overload protecting mechanism with the side of main hollow housing (81)
Overload protecting mechanism with secondary hollow housing (84), the inside of the secondary hollow housing (84) of the overload protecting mechanism is overload guarantor
The secondary hollow section (85) of mechanism is protected, the inside of the secondary hollow section (85) of the overload protecting mechanism is protected positioned at the overload
The end face for protecting the main hollow section (82) of mechanism places an overload protecting mechanism movable plate (86), the overload protecting mechanism
With secondary hollow section (85) positioned at the overload protecting mechanism with fixing an overload protection machine between one end of movable plate (86)
Structure is provided with the mistake with its integral structure with the end face of movable plate (86) with helical spring (87), the overload protecting mechanism
Protection mechanism is carried with push rod (88), and the overload protecting mechanism led with push rod (88) through the overload protecting mechanism it is hollow
Housing (81), and positioned at the inside of the main hollow section (82) of the overload protecting mechanism, the overload protecting mechanism push rod
(88) one end of hollow section (82) is being led positioned at the overload protecting mechanism as semicircular structure, the overload protecting mechanism
It is provided with to place the overload protecting mechanism of overload protecting mechanism push rod (88) end with the side of column spinner (83)
With semi-circular recesses structure (89), the overload protecting mechanism fixes one first rotation axis (7) with one end of column spinner (83).
4. a kind of building tower crane hoisting mechanism power-off protector according to claim 3, it is characterised in that：The overload
Protection mechanism is more than the length of the secondary hollow section (85) of the overload protecting mechanism with the initial length of helical spring (87).
5. a kind of building tower crane hoisting mechanism power-off protector according to claim 1, it is characterised in that：The electromagnetism
Fixing seal mechanism (20) includes electromagnetism fixing seal mechanism with main cylindrical shell (201), electromagnetism fixing seal mechanism subpost
Shape housing (202), electromagnetism fixing seal mechanism are fixed with iron core (203), electromagnetism fixing seal mechanism with coil (204) and electromagnetism
Sealing mechanism is with stepped groove structure (205).
6. a kind of building tower crane hoisting mechanism power-off protector according to claim 5, it is characterised in that：The electromagnetism
Fixing seal mechanism is provided with secondary with the electromagnetism fixing seal mechanism of its integral structure with one end of main cylindrical shell (201)
Cylindrical shell (202), the electromagnetism fixing seal mechanism inlay an electromagnetism with the internal center of main cylindrical shell (201) and consolidate
Determine sealing mechanism iron core (203), and the electromagnetism fixing seal mechanism is close with the side socket one electromagnetism fixation of iron core (203)
For sealing mechanism with coil (204), being provided centrally with for secondary cylindrical shell (202) end face of the electromagnetism fixing seal mechanism is described
Electromagnetism fixing seal mechanism is with stepped groove structure (205).
7. a kind of building tower crane hoisting mechanism power-off protector according to claim 6, it is characterised in that：The electromagnetism
Fixing seal mechanism is handled with the surface of stepped groove structure (205) by rough surface.
8. a kind of building tower crane hoisting mechanism power-off protector according to claim 1, it is characterised in that：When electromagnetism is consolidated
When determining sealing mechanism (20) into electric current, the magnetic positioned at magnetic and permanent magnetism scapus (18) end of permanent magnetism scapus (18) one end
Property is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721444245.9U CN207451481U (en) | 2017-11-02 | 2017-11-02 | A kind of building tower crane hoisting mechanism power-off protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721444245.9U CN207451481U (en) | 2017-11-02 | 2017-11-02 | A kind of building tower crane hoisting mechanism power-off protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207451481U true CN207451481U (en) | 2018-06-05 |
Family
ID=62253218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721444245.9U Expired - Fee Related CN207451481U (en) | 2017-11-02 | 2017-11-02 | A kind of building tower crane hoisting mechanism power-off protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207451481U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109552821A (en) * | 2018-12-07 | 2019-04-02 | 王娟娟 | A kind of wheel raw material recovery device |
| CN111498699A (en) * | 2020-04-26 | 2020-08-07 | 吴美玲 | Anti-falling suspension device |
-
2017
- 2017-11-02 CN CN201721444245.9U patent/CN207451481U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109552821A (en) * | 2018-12-07 | 2019-04-02 | 王娟娟 | A kind of wheel raw material recovery device |
| CN111498699A (en) * | 2020-04-26 | 2020-08-07 | 吴美玲 | Anti-falling suspension device |
| CN111498699B (en) * | 2020-04-26 | 2021-12-24 | 台州市同享管业有限公司 | Anti-falling suspension device |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180605 Termination date: 20211102 |
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| CF01 | Termination of patent right due to non-payment of annual fee |