CN207551768U - A kind of tower crane for building - Google Patents
A kind of tower crane for building Download PDFInfo
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- CN207551768U CN207551768U CN201721744245.0U CN201721744245U CN207551768U CN 207551768 U CN207551768 U CN 207551768U CN 201721744245 U CN201721744245 U CN 201721744245U CN 207551768 U CN207551768 U CN 207551768U
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- arm
- jib
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- tower
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Abstract
This application discloses a kind of tower cranes for building, the tower crane includes pedestal, the tower body being perpendicularly fixed on pedestal, arm, counter-jib, suspension hook, tower top and the controller being arranged on tower body, wherein, it is flexible that the first telescoping mechanism being electrically connected with the controller, the first telescoping mechanism driving arm or so is provided in arm；Moving trolley is provided on arm, moving trolley is moved left and right along arm, and suspension hook is set to by cable wire in moving trolley；It is flexible that the second telescoping mechanism being electrically connected with the controller, the second telescoping mechanism driving counter-jib or so is provided in counter-jib, the one end of counter-jib far from tower body is provided with clump weight.The tower crane for building that the application provides increases the length of arm, is capable of the weight of far distance by the first telescoping mechanism for adding；Meanwhile the second telescoping mechanism by adding, increase the length of arm, that is, increase torque arm length, can the heavier weight of handling, greatly improve work efficiency.
Description
Technical field
This application involves construction equipment technical field more particularly to a kind of tower cranes for building.
Background technology
Tower crane is a kind of most common lifting equipment also known as " derrick crane " on construction site, is connect with a section
Growing (height), it is used for hanging the construction raw material such as working reinforcing bar, wood stupefied, concrete, steel pipe.
Tower crane generally comprises the structures such as pedestal, tower body, pivoting support, lifting body, tower top, counter-jib, arm and suspension hook,
After suspension hook slings weight, first weight is above carried, after above mentioning certain altitude, entire arm rotation, so as to which weight be moved to
The position of demand.
But in actual mechanical process, the distribution of weight and demand position sometimes is not concentrated or weight and demand position
It is distant, demand is not achieved in the length of arm, generally requires more tower cranes and carries out hoisting heavies, this adds increased operative employees
When, reduce working efficiency.
Utility model content
This application provides a kind of tower cranes for building, and demand is not achieved with the length of boom for solving current tower crane, needs cloth
Put more tower cranes, the technical issues of working efficiency is relatively low.
In order to solve the above-mentioned technical problem, the embodiment of the present application discloses following technical solution：
The embodiment of the present application discloses a kind of tower crane for building, and the tower crane includes：Pedestal is perpendicularly fixed at the pedestal
On tower body, the arm, counter-jib, suspension hook, tower top and the controller that are arranged on the tower body, wherein,
The first telescoping mechanism being electrically connected with the controller, the first telescoping mechanism driving are provided in the arm
Described arm or so is flexible；Moving trolley is provided on the arm, the moving trolley is moved left and right along the arm；It is described
Suspension hook is set to by cable wire in the moving trolley；
The second telescoping mechanism being electrically connected with the controller is provided in the counter-jib, second telescoping mechanism drives
It is flexible to move described counter-jib or so；The one end of the counter-jib far from the tower body is provided with clump weight；
The tower top is set to the one end of the tower body far from the pedestal, the arm, counter-jib by hawser with
The tower top connection.
Optionally, first telescoping mechanism includes the first stepper motor, the first leading screw and the first nut, the first step
Stepper motor is both secured to the first nut on the arm, and first stepper motor is electrically connected with the controller；Described
The output axis connection of one end of one leading screw and first stepper motor, the other end across first nut connect described in hang
Arm.
Optionally, second telescoping mechanism includes the second stepper motor, the second leading screw and the second nut, the second step
Stepper motor is both secured to one end far from the clump weight, second stepper motor and institute on the counter-jib with the second nut
State controller electrical connection；The output axis connection of one end of second leading screw and second stepper motor, the other end pass through institute
It states the second nut and connects the counter-jib.
Optionally, the first supersonic generator is provided on the tower body, is provided in the moving trolley and described
Corresponding first ultrasonic receiver of one supersonic generator, output terminal and the controller of first ultrasonic receiver
Electrical connection.
Optionally, supporting block is provided between the moving trolley and suspension hook, the suspension hook is movably set in the support
On block, the supporting block connects the moving trolley by cable wire；
Weight sensor is provided in the supporting block, the side of the supporting block towards the moving trolley is provided with report
Alert device, the weight sensor, alarm are connect with the controller signals.
Optionally, pulley is provided in the moving trolley, the cable wire for connecting the supporting block is wrapped on the pulley.
Optionally, the side of the supporting block towards the suspension hook is provided with turntable, and the suspension hook is fixed on the turntable
On, turntable is around the center axis thereof of the supporting block.
Optionally, the second supersonic generator is provided in the moving trolley, be provided in the supporting block with it is described
Corresponding second ultrasonic receiver of second supersonic generator, output terminal and the control of second ultrasonic receiver
Device is electrically connected.
Compared with prior art, the application has the beneficial effect that：
Tower crane for building provided by the embodiments of the present application includes pedestal, the tower body being perpendicularly fixed on pedestal, is arranged on tower
Arm, counter-jib, suspension hook, tower top and controller with it, wherein, first be electrically connected with the controller is provided in arm and is stretched
Contracting mechanism, the first telescoping mechanism driving arm or so is flexible；It is provided with moving trolley on arm, moving trolley is along arm or so shifting
Dynamic, suspension hook is set to by cable wire in moving trolley；The second telescoping mechanism being electrically connected with the controller is provided in counter-jib, the
Two telescoping mechanisms driving counter-jib or so is flexible, and the one end of counter-jib far from tower body is provided with clump weight；Tower top is set to tower body
One end far from pedestal, arm, counter-jib are connect by hawser with tower top.The tower crane for building that the application provides is by adding
The first telescoping mechanism can lengthen the length of arm, being capable of the distant weight of handling；Pass through the second telescopic machine added
Structure can lengthen the length of counter-jib, when the weight of suspension hook handling is heavier, can increase the length of counter-jib, i.e. reinforcement brachium
Degree, so as to the heavier weight of handling, and can reduce the stress of tower body, and then can ensure the balance of tower crane.
It should be understood that above general description and following detailed description are only exemplary and explanatory, not
The application can be limited.
Description of the drawings
In order to illustrate more clearly of the technical solution of the application, letter will be made to attached drawing needed in the embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without creative efforts, also
Other attached drawings can be obtained according to these attached drawings.
Fig. 1 is the structure diagram of a kind of tower crane for building that the utility model embodiment provides；
Fig. 2 is the structure diagram of the first telescoping mechanism in a kind of tower crane for building that the utility model embodiment provides；
Fig. 3 is the structure diagram of the first telescoping mechanism in a kind of tower crane for building that the utility model embodiment provides；
Fig. 4 is the structure diagram of suspension hook in a kind of tower crane for building that the utility model embodiment provides；
Fig. 1-Fig. 4 symbolic indications：1- pedestals, 2- tower bodies, 3- hanging baskets, 4- wireropes, 5- floors, 6- lifting bodies, 7- revolutions
Bearing, 8- arms, the first stepper motors of 81-, the first leading screws of 82-, the first nuts of 83-, 9- counter-jibs, the second stepper motors of 91-,
The second leading screws of 92-, the second nuts of 93-, 10- clump weights, 11- hawsers, 12- moving trolleys, 13- supporting blocks, 131- weight sensing
Device, 14- suspension hooks, 141- levers, 15- alarm lamps, the first supersonic generators of 16-, the first ultrasonic receivers of 17-, 18-
Two supersonic generators, the second ultrasonic receivers of 19-, 20- pulleys, 21- driver's cabins, 22- tower tops, 23- third stepper motors.
Specific embodiment
In order to make those skilled in the art better understand the technical solutions in the application, below in conjunction with the application reality
The attached drawing in example is applied, the technical solution in the embodiment of the present application is clearly and completely described, it is clear that described implementation
Example is only some embodiments of the present application rather than whole embodiments.Based on the embodiment in the application, the common skill in this field
Art personnel all other embodiments obtained without making creative work should all belong to the application protection
Range.
It is a kind of structure diagram of tower crane for building provided by the embodiments of the present application referring to Fig. 1.
As shown in Figure 1, tower crane for building provided by the embodiments of the present application includes pedestal 1, the tower being perpendicularly fixed on pedestal 1
Body 2, the arm 8 being arranged on tower body 2, counter-jib 9, suspension hook 14, tower top 22 and controller, wherein,
Pedestal 1 fixes on the ground, and tower body 2 is perpendicularly fixed at by bolt on pedestal 1, and pedestal 1 is used to increase tower crane
Stability, when avoiding handling weight, tower body 2 is because stress is mobile or shakes, so as to increase the difficulty of handling.
To further increase the stability of tower body 2, floor 5, a right angle of floor 5 are additionally provided between tower body 2 and pedestal 1
While being welded on the outer surface of tower body 2, another right-angle side is welded on pedestal 1.Bolt after prolonged use, is be easy to cause
Screw hole dimensions increase, and then influence the stability of tower body 2, and after increasing floor 5, it is ensured that the installation stability of tower body 2.
Tower top 22 is set to the one end of tower body 2 far from pedestal 1, and arm 8, counter-jib 9 are connected by hawser 11 and tower top 22
It connects.When 14 handling weight of suspension hook, arm 8 bears pressure with counter-jib 9, and the hawser 11 for connecting tower top 22 can be to arm
8 generate pulling force with counter-jib 9, so as to offset partial pressure, ensure the structure of arm 8 and counter-jib 9, avoid arm 8 with
The stress of counter-jib 9 is more than rated load, and arm 8 is caused to be damaged with counter-jib 9.
The first telescoping mechanism being electrically connected with the controller is provided in arm 8, the first telescoping mechanism driving arm 8 or so is stretched
Contracting.Specifically, when 8 length of arm is too short, controller controls the work of the first telescoping mechanism, the first telescoping mechanism driving arm 8
It extends to the left, increases the length of arm 8, so as to the more remote contact weight of handling, avoid arranging a tower crane again.
When 8 length of arm is long, controller control the first telescoping mechanism work, the first telescoping mechanism drive arm 8 to
The right side is flexible, reduces the length of arm 8, strong wind is avoided to blow arm 8, causes the increase of construction cost.
In particular, as shown in Fig. 2, the first telescoping mechanism includes the first stepper motor 81, the first leading screw 82 and the first spiral shell
Mother 83, the first stepper motor 81 and the first nut 83 are both secured on the stent of arm 8, for fixing the first stepper motor 81
With the first nut 83；The output axis connection of one end of first leading screw 82 and the first stepper motor 81, the other end pass through the first nut
83 connection arms 8, the first nut 83 is used to support the first leading screw 82, and the first stepper motor 81 is electrically connected with the controller.
During work, when the length of arm 8 is too short, controller controls the first stepper motor 81 to rotate forward, the first stepper motor
81 the first leading screws 82 of driving rotate forward, and the active length of the first leading screw 82 increases, so as to which arm 8 be driven to extend to the left.When arm 8
Length it is long when, controller controls the first stepper motor 81 to invert, and the first stepper motor 81 drives the first leading screw 82 to invert, the
The active length of one leading screw 82 reduces, so as to which arm 8 be driven to shrink to the right.
Similarly, the second telescoping mechanism being electrically connected with the controller, the second telescoping mechanism driving balance are provided in counter-jib 9
Arm 9 or so is flexible.Specifically, when 9 length of counter-jib is too short, controller controls the work of the second telescoping mechanism, the second telescopic machine
Structure driving counter-jib 9 extends to the right, increases the length of counter-jib 9, can be with the heavier weight of handling so as to increase torque arm length.
When 9 length of counter-jib is long, controller controls the work of the second telescoping mechanism, the second telescoping mechanism driving counter-jib
9 shrink to the left, reduce the length of counter-jib 9, so as to which strong wind is avoided to blow counter-jib 9.
In particular, as shown in figure 3, second telescoping mechanism the second stepper motor 91, the second leading screw 92 and the second nut 93,
Second stepper motor 91 and the second nut 93 are both secured to the one end of counter-jib 9 far from clump weight 10, for fixing the second stepping
91 and second nut 93 of motor；The output axis connection of one end of second leading screw 92 and the second stepper motor 91, the other end pass through the
Two nuts 93 connect counter-jib 9, and the second nut 93 is used to support the second leading screw 92, and the second stepper motor 91 is electrically connected with controller
It connects.
During work, when the length of counter-jib 9 is too short, i.e., the arm of force is too short, to ensure the balance of arm 8 and counter-jib 9,
The weight for reducing handling weight or the length for reducing arm 8 are needed, this can impact work, therefore be asked to solve this
Topic, controller control the second stepper motor 91 to rotate forward, and the second stepper motor 91 drives the second leading screw 92 to rotate forward, the second leading screw 92
Active length increase, so as to which counter-jib 9 be driven to extend to the right.When the length of counter-jib 9 is long, i.e., the arm of force is long, to protect
The balance of arm 8 and counter-jib 9 is demonstrate,proved, need to increase the weight of handling weight or increases the length of arm 8, to solve this
Problem, controller control the second stepper motor 91 to invert, and the second stepper motor 91 drives the second leading screw 92 to invert, the second leading screw 92
Active length reduce, so as to which counter-jib 9 be driven to shrink to the left.
Moving trolley 12 is provided on arm 8, moving trolley 12 is provided with motor, and motor drives moving trolley 12 along arm
8 move left and right.And suspension hook 14 is set to by cable wire in moving trolley 12, and when moving trolley 12 moves left and right, suspension hook 14
It is followed by and moves left and right, the position of suspension hook 14 is adjusted at any time, to facilitate handling weight and weight is hoisted to demand position.
As shown in figure 4, being provided with supporting block 13 between moving trolley 12 and suspension hook 14, suspension hook 14 is movably set in supporting block
On 13, i.e. the side of supporting block 13 towards suspension hook 14 is provided with turntable, and suspension hook 14 is fixed on turntable, and turntable is around supporting block 13
Center axis thereof, i.e. suspension hook 14 can be with 360 degree rotation, more easily handling weight.
The openend of suspension hook 14 is provided with lever 141, to rotation at 14 cavity of suspension hook when lever 141 is pressurized, so as to exposure
Openend facilitates weight to hang on suspension hook 14, and after weight is hung on suspension hook 14, lever 141 automatically resets, and lever 141 is not
It can be turned out, so as to which weight is avoided to break off relations.
Pulley 20 is provided in moving trolley 12, the cable wire of connection supporting block 13 is wrapped on pulley 20, when suspension hook 14 needs
Decline when hooking up weight, rotate 20 unwrapping wire of pulley, suspension hook 14 declines under the effect of gravity；Rise when suspension hook 14 hooks up weight
When, 20 take-up of pulley is rotated, so as to which suspension hook 14 be driven to rise.
Weight sensor 131 is provided in supporting block 13, weight sensor 131 is connect with controller signals, weight sensing
Device 131 is used to weigh the weight data of handling weight, and data-signal is sent to controller by weight sensor 131 later, is controlled
Device judge weight whether be more than cable wire rated load, if being more than, need to increase cable wire quantity or be hung using other modes
Transport weight.
The side of supporting block 13 towards moving trolley 12 is provided with alarm lamp 15, and alarm lamp 15 is connect with controller signals,
When weight sensor 131 detects that the weight of weight is more than the rated load of cable wire, controller control alarm lamp 15 shines, and carries
Wake up operating personnel, and error is avoided to cause equipment damage.
In the embodiment of the present application, the first supersonic generator 16 is provided on tower body 2, is provided in moving trolley 12 and the
One supersonic generator, 16 corresponding first ultrasonic receiver 17, output terminal and the controller electricity of the first ultrasonic receiver 17
Connection.The position of moving trolley 12 is determined by the first supersonic generator 16 and the first ultrasonic receiver 17, that is, is moved
The distance of dynamic trolley 12 and tower body 2.After weight sensor 131 collects the weight of weight, by data signal transmission to controller,
The optimum position of moving trolley 12 is calculated according to the length of counter-jib 9 and the weight of clump weight 10 for controller；Or control
The optimum length of counter-jib 9 is calculated according to the distance value of weight gravimetric value and moving trolley 12 for device, controls second to stretch later
Contracting mechanism driving counter-jib 9 is extended or is shunk.
The second supersonic generator 18 is additionally provided in moving trolley 12, is provided in supporting block 13 and is sent out with the second ultrasonic wave
18 corresponding second ultrasonic receiver 19 of raw device, the output terminal of the second ultrasonic receiver 19 are electrically connected with the controller.Pass through
Second supersonic generator 18 and the second ultrasonic receiver 19 obtain suspension hook 14 and the distance of moving trolley 12, when the two away from
During from entering safe range, controller control alarm lamp 15 is shinny, and operating personnel's suspension hook 14 is reminded to ask operating personnel close to ground
It not be located at 14 lower section of suspension hook, ensure the personal safety of operating personnel.
The junction of tower top 22 and arm 8 is provided with driver's cabin 21, and driver is sitting in operation tower crane in driver's cabin 21.Control
Device is also disposed in driver's cabin 21, and driver is according to the weight data signal, the position signal of moving trolley, suspension hook received
The signals such as position signal make corresponding operation, complete handling work.
Tower body 2 is provided with pivoting support 7 close to one end of arm 8, and controller can control pivoting support 7 to rotate, so as to band
Dynamic arm 8 is rotated with counter-jib 9, can carry out the handling work of all directions.In addition, it is also set between pivoting support 7 and tower body 2
Lifting body 6 is equipped with, lifting body 6 can increase the height of tower body 2, i.e. lifting body 6 drives pivoting support 7 to rise a mark
The height of quasi- section, rear hanger 14 handling, one standard knot, which is embedded between pivoting support 7 and lifting body 6,
So as to increase the height of tower body 2, suitable for building skyscraper.
When the excessive height of tower body 2, can engaged mechanism be set on tower body 2, engaged mechanism is mounted on and has been built
On the building of completion, increase the stability of tower body 2, when avoiding 2 height of tower body too high, tower body 2 easily shakes or occurs crooked.
Hanging basket 3 is provided in tower body 2, third stepper motor 23 is installed in tower body 2, third stepper motor 23 passes through
Wirerope 4 connects hanging basket 3, and third stepper motor 23 is electrically connected with the controller.Hanging basket 3 is equivalent to elevator, facilitates above and below driver
Driver's cabin 21.When hanging basket 3 needs to rise, controller control third stepper motor 23 rotates forward, and third stepper motor 23 drives steel
Cable 4 is wrapped on cable wheel, so as to which hanging basket 3 be driven to rise；When hanging basket 3 needs to decline, controller control third stepper motor
23 reversions, third stepper motor 23 drive wirerope unwrapping wire, so as to which hanging basket 3 declines under the effect of gravity.
Tower crane for building provided by the embodiments of the present application includes pedestal, the tower body being perpendicularly fixed on pedestal, is arranged on tower
Arm, counter-jib, suspension hook and controller with it, wherein, the first telescopic machine being electrically connected with the controller is provided in arm
Structure, the first telescoping mechanism driving arm or so is flexible, can adjust the length of arm；Controller electrical connection is provided in counter-jib
The second telescoping mechanism, the second telescoping mechanism driving counter-jib or so is flexible, can adjust the length of counter-jib；It is set on arm
There is moving trolley, moving trolley is moved left and right along arm, and suspension hook is set to by cable wire in moving trolley, moving trolley movement
When drive suspension hook synchronizing moving, so as to more convenient handling weight；The second supersonic generator is provided in moving trolley, on suspension hook
Be provided with the second ultrasonic receiver, by the second supersonic generator and the second ultrasonic receiver can to lift hook position into
Row is accurately positioned；The first supersonic generator is provided on tower body, is provided in moving trolley and the first supersonic generator pair
The first ultrasonic receiver answered carries out moving trolley position by the first supersonic generator and the first ultrasonic receiver
It is accurately positioned.The tower crane for building that the application provides can be according to weight weight, the appropriate adjustment length of boom of weight distance, counter-jib
Length etc. so that tower crane is in optimal working condition, greatly improves work efficiency.
It should be noted that in the present specification, the relational terms of such as " first " and " second " or the like are used merely to
It distinguishes one entity or operation from another entity or operation, and not necessarily requires or imply these entities or operation
Between there are any this practical relationships or sequence.
Those skilled in the art will readily occur to the application after considering specification and putting into practice the disclosure of utility model here
Other embodiments.This application is intended to cover any variations, uses, or adaptations of the utility model, these changes
Type, purposes or adaptive change follow the general principle of the application and undocumented in the art including the application
Common knowledge or conventional techniques.Description and embodiments are considered only as illustratively, the true scope and spirit of the application
It is pointed out by the content of claim.
Above-described the application embodiment does not form the restriction to the application protection domain.
Claims (8)
1. a kind of tower crane for building, which is characterized in that including：Pedestal, is arranged on institute at the tower body being perpendicularly fixed on the pedestal
Arm, counter-jib, suspension hook, tower top and the controller on tower body are stated, wherein,
The first telescoping mechanism being electrically connected with the controller is provided in the arm, described in the first telescoping mechanism driving
Arm or so is flexible；Moving trolley is provided on the arm, the moving trolley is moved left and right along the arm；The suspension hook
It is set in the moving trolley by cable wire；
The second telescoping mechanism being electrically connected with the controller is provided in the counter-jib, second telescoping mechanism drives institute
It is flexible to state counter-jib or so；The one end of the counter-jib far from the tower body is provided with clump weight；
The tower top is set to the one end of the tower body far from the pedestal, the arm, counter-jib by hawser with it is described
Tower top connects.
2. tower crane for building according to claim 1, which is characterized in that first telescoping mechanism includes the first stepping electricity
Machine, the first leading screw and the first nut, first stepper motor and the first nut are both secured on the arm, the first step
Stepper motor is electrically connected with the controller；It is the output axis connection of one end of first leading screw and first stepper motor, another
One end passes through first nut to connect the arm.
3. tower crane for building according to claim 1, which is characterized in that second telescoping mechanism includes the second stepping electricity
Machine, the second leading screw and the second nut, second stepper motor and the second nut are both secured on the counter-jib far from described
One end of clump weight, second stepper motor are electrically connected with the controller；One end of second leading screw and described second
The output axis connection of stepper motor, the other end pass through second nut to connect the counter-jib.
4. tower crane for building according to claim 1, which is characterized in that the generation of the first ultrasonic wave is provided on the tower body
Device, is provided with the first ultrasonic receiver corresponding with first supersonic generator in the moving trolley, and described first
The output terminal of ultrasonic receiver is electrically connected with the controller.
5. tower crane for building according to claim 4, which is characterized in that branch is provided between the moving trolley and suspension hook
Bracer, the suspension hook are movably set in the supporting block, and the supporting block connects the moving trolley by cable wire；
Weight sensor is provided in the supporting block, the side of the supporting block towards the moving trolley is provided with alarm
Device, the weight sensor, alarm are connect with the controller signals.
6. tower crane for building according to claim 5, which is characterized in that pulley is provided in the moving trolley, is connected
The cable wire of the supporting block is wrapped on the pulley.
7. tower crane for building according to claim 6, which is characterized in that the side of the supporting block towards the suspension hook is set
Turntable is equipped with, the suspension hook is fixed on the turntable, and turntable is around the center axis thereof of the supporting block.
8. tower crane for building according to claim 5, which is characterized in that the second ultrasonic wave is provided in the moving trolley
Generator, is provided with the second ultrasonic receiver corresponding with second supersonic generator in the supporting block, and described
The output terminal of two ultrasonic receivers is electrically connected with the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721744245.0U CN207551768U (en) | 2017-12-14 | 2017-12-14 | A kind of tower crane for building |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721744245.0U CN207551768U (en) | 2017-12-14 | 2017-12-14 | A kind of tower crane for building |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207551768U true CN207551768U (en) | 2018-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721744245.0U Expired - Fee Related CN207551768U (en) | 2017-12-14 | 2017-12-14 | A kind of tower crane for building |
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| Country | Link |
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| CN (1) | CN207551768U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110155890A (en) * | 2019-06-20 | 2019-08-23 | 河北水利电力学院 | A kind of architectural engineering tower crane with lock function |
-
2017
- 2017-12-14 CN CN201721744245.0U patent/CN207551768U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110155890A (en) * | 2019-06-20 | 2019-08-23 | 河北水利电力学院 | A kind of architectural engineering tower crane with lock function |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180629 Termination date: 20191214 |
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| CF01 | Termination of patent right due to non-payment of annual fee |