CN209396797U - A kind of crane rod length adjustable structure and crane - Google Patents
A kind of crane rod length adjustable structure and crane Download PDFInfo
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- CN209396797U CN209396797U CN201822270899.5U CN201822270899U CN209396797U CN 209396797 U CN209396797 U CN 209396797U CN 201822270899 U CN201822270899 U CN 201822270899U CN 209396797 U CN209396797 U CN 209396797U
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Abstract
The utility model belongs to crane technical field, and in particular to a kind of crane rod length adjustable structure and crane, including pulling plate, the pulling plate include being arranged in parallel and upper arm-tie and lower pulling plate that middle part is fixed；One end of pulling plate is equipped with the first pin hole, and first pin hole runs through upper arm-tie and lower pulling plate, and first pin hole is kidney slot, and the first pin shaft is equipped in first pin hole, and first pin shaft is used for connecting rod；The upper and lower surfaces of the pulling plate are respectively equipped with two mounting plates, and screw hole is equipped in the mounting plate, bolt is equipped in the screw hole, the bolt presses closer on the side of the first pin shaft after passing through screw hole.The utility model can be realized the fine tuning of rod length in crane, and then realize the adjusting of suffered pulling force, convenient and efficient, can also carry out rod length adjusting after the installation is completed in crane.
Description
Technical field
The invention belongs to lifting technique fields, and in particular to a kind of crane rod length adjustable structure and crane.
Background technique
Currently, the crane arm that the tower of public domain emits formula tower crane has a pull rod of front and back two, one end of two pull rods and lifting
The otic placode of arm is hinged, and the other end and tower cap are hinged, and pull rod changes the stress of crane arm for reducing crane arm amount of deflection
It is kind.But this double pull rod structure belongs to statically indeterminate structure, once processing and manufacturing has error or crane arm gravity deformation, will lead to
The phenomenon that length and design length of two pull rods are not inconsistent causes two pull rod stress and former design stress relatively large deviation occur.
In the existing crane pull rod regulative mode that inventor recognizes, pull rod usually is carried out before crane installation
The adjusting of length can not carry out length adjustment after pull rod and crane arm are installed；And rod length is adjusted discontinuously, no
It is able to achieve the effect of fine tuning, and crane rod length deviation is possible in millimeter rank, this allows for existing rod length tune
Section mode has limitation, and regulating effect is poor.
The technical solution as disclosed in a kind of lifting arm brace adjustment device of patent document CN202625668U-: it is connecting
The adjustment hole of different distance is set on bar, pull rod and different adjustment hole hingedly with change between pull rod and crane arm otic placode away from
From, and then change the stress of pull rod.This regulative mode, which changes rod length and stress, has jumping characteristic, can not achieve drawing
The fine tuning of pole length.And after crane is installed, rod length adjusting can not be carried out, otherwise can make another pull rod by
Power increases severely, and influences the service life of pull rod.
Summary of the invention
The purpose of the present invention is to overcome above-mentioned the deficiencies in the prior art, provide a kind of crane rod length adjustable structure
And crane, it can be realized the fine tuning of rod length in crane, and then realize the adjusting of suffered pulling force, it is convenient and efficient, it is rising
Heavy-duty machine can also carry out rod length adjusting after the installation is completed.
To achieve the above object, the present invention adopts the following technical solutions: a kind of crane rod length adjustable structure, including
Pulling plate, the pulling plate include being arranged in parallel and upper arm-tie and lower pulling plate that middle part is fixed；
One end of pulling plate is equipped with the first pin hole, and first pin hole runs through upper arm-tie and lower pulling plate, and first pin hole is
Kidney slot, the first pin shaft is equipped in first pin hole, and first pin shaft is used for connecting rod；
The upper and lower surfaces of the pulling plate are respectively equipped with two mounting plates, and screw hole is equipped in the mounting plate, described
Bolt is equipped in screw hole, the bolt presses closer on the side of the first pin shaft after passing through screw hole, and the bolt is for fixing first
Pin shaft.
Position of first pin shaft in the first pin hole is adjusted by bolt rotation；Because often rotating a circle, bolt is straight
The moving distance very little in line direction, realizes the fine tuning of the first pin shaft position in the first pin hole, and then realizes rod length
Fine tuning.
Further, the other end of the pulling plate is equipped with the second pin hole, and second pin hole is for connecting crane arm.
Further, the first pin hole axis is parallel with the second pin hole axis, and the axis of the screw hole is in the first pin hole
In the plane that axis and the second pin bore axis line are formed.
The arrangement of screw hole axis makes two bolt moving directions identical as the moving direction of the first pin shaft, so that spiral shell
Bolt rotation has determining corresponding relationship with the displacement of the first pin shaft.
Further, the axis of the screw hole is vertical with the axis of the first pin hole.
Further, mounting plate in the same plane is symmetrical arranged about the first pin hole.It is located at upper arm-tie upper surface
Two mounting plates it is symmetrical about the first pin hole, two mounting plates positioned at lower pulling plate lower surface are symmetrical about the first pin hole.
Further, between the upper arm-tie and lower pulling plate have setting gap, the setting gap for install pull rod or
Crane arm otic placode.
A kind of crane, including crane arm and pylon, the upper end of the crane arm are equipped with otic placode, and the otic placode passes through second
Second pin hole of pin shaft and pulling plate is hinged, and the pulling plate is hinged by the lower end of the first pin hole and the first pin shaft and pull rod, described
The upper end of pull rod and pylon are hinged.
Further, the pull rod includes the more piece body of rod, multiple third pin shafts hinged by third pin shaft between the adjacent body of rod
In one be bearing pin sensor, the bearing pin sensor connect with crane control system signal.
A kind of adjusting method of crane rod length, comprising the following steps:
Step 1: bearing pin sensor acquires pulling force numerical value suffered by pull rod, and signal is passed to crane control system；
Step 2: crane control system by pulling force numerical value described in pull rod compared with default value, if pulling force numerical value be less than it is pre-
If numerical value, 3 are taken steps；If pulling force numerical value is greater than preset value, 4 are taken steps；
Step 3: rotation bolt, so that multiple bolts are moved towards the direction close to otic placode, the first pin shaft is in the first pin hole
In moved towards the direction close to otic placode, pull rod is tightened, so that pulling force suffered by pull rod increases；
Step 4: rotation bolt, so that multiple bolts are moved away from the direction of otic placode, the first pin shaft is in the first pin hole
In moved away from the direction of otic placode, pull rod is relaxed, so that pulling force suffered by pull rod is reduced；
Step 5: when pull rod stress is equal with preset value, stop rotating bolt.
Beneficial effects of the present invention:
Using special kidney slot as the first pin hole, the first pin shaft can move and consolidate in the first pin hole the application
It is fixed, change distance of the pull rod lower end apart from crane arm otic placode, realizes the fine tuning of rod length, change the stress of pull rod.Avoid because
For rod length caused by mismachining tolerance or crane arm gravity deformation, stress and the incongruent situation of design objective, Neng Gouti
The service life of high pull rod increases the structural stability of crane.
Two mounting plates are respectively set in the upper surface of upper arm-tie and the lower surface of lower pulling plate, mounting plate can be sent out with bolt
Raw to relatively rotate, bolt is pressed closer in the first pin shaft side, realizes positioning of first pin shaft in the first pin hole；By rotating bolt
Position of first pin shaft in the first pin hole can be changed, and then change pull rod lower end at a distance from crane arm otic placode.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation do not constitute the restriction to the application for explaining the application.
Fig. 1 is overall structure diagram main view of the invention；
Fig. 2 is overall structure diagram top view of the invention；
Fig. 3 is the schematic diagram that the present invention is used cooperatively with pull rod.
In figure: 1, bolt；2, mounting plate；3, the first pin shaft；3A, the first pin hole；4, pulling plate；5, pull rod；6, the second pin hole.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
In order to facilitate narration, if there is " upper and lower, left and right " printed words in the present invention, only indicate with attached drawing itself it is upper,
Under, left and right direction it is consistent, not to structure rise restriction effect, be merely for convenience of description of the present invention and simplification of the description, rather than
The equipment or element of indication or suggestion meaning must have a particular orientation, and be constructed and operated in a specific orientation, therefore cannot
It is interpreted as limitation of the present invention.
Refer to that the direction by bolt away from the first pin hole is revolved it should be pointed out that " unscrewing bolt " in the application
Turn, " screwing bolts " refer to that the direction towards the first pin hole rotates bolt.
" rod length is adjustable " refers to that pull rod bottom end is adjustable apart from the distance of crane arm otic placode in the application, not
Be limit pull rod itself length it is adjustable, i.e., " total length of pull rod and pulling plate when tensing " is adjustable.
In a kind of exemplary embodiment of the invention, as shown in Figs. 1-2, a kind of 5 length adjustable structure of crane pull rod, packet
Pulling plate 4 is included, the pulling plate 4 includes the upper arm-tie and lower pulling plate that are arranged in parallel and middle part is fixed, and one end of pulling plate 4 is equipped with the first pin
Hole 3A, the first pin hole 3A run through upper arm-tie and lower pulling plate, and the first pin hole 3A is kidney slot, in the first pin hole 3A
It is equipped with the first pin shaft 3, first pin shaft 3 is used for connecting rod 5.
Specifically, " wearing " herein refers to that the first pin shaft 3 passes through the first pin hole 3A, and the both ends of the first pin shaft 3
It is all located at outside the first pin hole 3A.
Specifically, upper arm-tie is identical as the structure of lower pulling plate, middle part is fixed by connecting plate or box-shaped plate.
The upper and lower surfaces of the pulling plate 4 are respectively equipped with two mounting plates 2, are equipped with screw hole, institute in the mounting plate 2
It states and is equipped with bolt 1 in screw hole, the bolt 1 presses closer on the side of the first pin shaft 3 after passing through screw hole.
Specifically, the upper surface of upper arm-tie and the lower surface of lower pulling plate are respectively equipped with two mounting plates 2.
Preferably, the other end of the pulling plate 4 is equipped with the second pin hole 6, and second pin hole 6 is for connecting crane arm.
Specifically, second pin hole 6 is hinged by the second pin shaft (not shown) and the otic placode of crane arm upper surface.
Preferably, the first pin hole 3A axis is parallel with 6 axis of the second pin hole, and the axis of the screw hole is in the first pin
In the plane that hole 3A axis and 6 axis of the second pin hole are formed.
Preferably, the axis of the screw hole is vertical with the axis of the first pin hole 3A.
Preferably, mounting plate 2 in the same plane is symmetrical arranged about the first pin hole 3A.
Preferably, between the upper arm-tie and lower pulling plate have setting gap, the setting gap for install pull rod 5 or
Crane arm otic placode.
Specifically, the lower end of pull rod 5 is protruded into setting gap, it is then using the first pin shaft 3 that pull rod 5 and pulling plate 4 is hinged.
Crane arm otic placode protrudes into setting gap, then using the second pin shaft that crane otic placode and pulling plate 4 is hinged.
A kind of crane, including crane arm and pylon, the upper end of the crane arm are equipped with otic placode, and the otic placode passes through second
Second pin hole 6 of pin shaft and pulling plate 4 is hinged, and the pulling plate 4 is cut with scissors by the lower end of the first pin hole 3A and the first pin shaft 3 and pull rod 5
It connects, the upper end of the pull rod 5 and pylon are hinged.
Preferably, the pull rod 5 includes the more piece body of rod, multiple third pins hinged by third pin shaft between the adjacent body of rod
One in axis is bearing pin sensor, and the bearing pin sensor is connect with crane control system signal.
Specifically, bearing pin sensor as pin bearing by pulling force, while pulling force numerical value can be passed to control system.
A kind of adjusting method of 5 length of crane pull rod, comprising the following steps:
Step 1: bearing pin sensor acquires pulling force numerical value suffered by pull rod 5, and signal is passed to crane control system；
Step 2: crane control system by pulling force numerical value described in pull rod 5 compared with default value, if pulling force numerical value is less than
Default value, takes steps 3；If pulling force numerical value is greater than preset value, 4 are taken steps；
Specifically, default value herein refers to the value of thrust that every pull rod 5 should bear in design.
Step 3: rotation bolt 1, so that multiple bolts 1 are moved towards the direction close to otic placode, the first pin shaft 3 is in the first pin
It is moved in the 3A of hole towards the direction close to otic placode, pull rod 5 is tightened, so that pulling force suffered by pull rod 5 increases；
Specifically, unscrewing two bolts 1 on upper arm-tie and lower pulling plate close to the second pin hole 6 first, the first pin shaft 3 is reserved
Mobile space, then screws two bolts 1 on upper arm-tie and lower pulling plate far from the second pin hole 6, and the movement of bolt 1 heads on the
One pin shaft 3 is mobile away from the direction of otic placode；Repeatedly step, until 5 stress composite demand of pull rod.
Step 4: rotation bolt 1, so that multiple bolts 1 are moved away from the direction of otic placode, the first pin shaft 3 is in the first pin
It is moved in the 3A of hole away from the direction of otic placode, pull rod 5 is relaxed, so that pulling force suffered by pull rod 5 is reduced；
Specifically, unscrewing two bolts 1 on upper arm-tie and lower pulling plate far from the second pin hole 6 first, the first pin shaft 3 is reserved
Mobile space, the first pin shaft 3 move in the first pin hole 3A, after 5 stress of pull rod meets the requirements, stop rotating；Then it revolves
Two bolts 1 far from the second pin hole 6 in tight upper arm-tie and lower pulling plate, hold out against the first pin shaft 3 again.
Step 5: when 5 stress of pull rod is equal with preset value, stop rotating bolt 1.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not protects model to the present invention
The limitation enclosed, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art are not
Need to make the creative labor the various modifications or changes that can be made still within protection scope of the present invention.
Claims (8)
1. a kind of crane rod length adjustable structure, which is characterized in that including,
Pulling plate, the pulling plate include being arranged in parallel and upper arm-tie and lower pulling plate that middle part is fixed；
One end of pulling plate is equipped with the first pin hole, and first pin hole runs through upper arm-tie and lower pulling plate, and first pin hole is kidney-shaped
Hole, the first pin shaft is equipped in first pin hole, and first pin shaft is used for connecting rod；
The upper and lower surfaces of the pulling plate are respectively equipped with two mounting plates, are equipped with screw hole, the screw hole in the mounting plate
In be equipped with bolt, the bolt pass through screw hole after press closer on the side of the first pin shaft.
2. crane rod length adjustable structure according to claim 1, which is characterized in that the other end of the pulling plate is set
There is the second pin hole, second pin hole is for connecting crane arm.
3. crane rod length adjustable structure according to claim 2, which is characterized in that the first pin hole axis with
Second pin hole axis is parallel, and the axis of the screw hole is in the plane that the first pin hole axis and the second pin bore axis line are formed.
4. crane rod length adjustable structure according to claim 3, which is characterized in that the axis of the screw hole and
The axis of one pin hole is vertical.
5. crane rod length adjustable structure according to claim 4, which is characterized in that peace in the same plane
Loading board is symmetrical arranged about the first pin hole.
6. crane rod length adjustable structure according to claim 1, which is characterized in that the upper arm-tie and lower pulling plate
Between there is setting gap, the setting gap is for installing pull rod or crane arm otic placode.
7. crane rod length adjustable structure described in any one of claim 1-6 is utilized in a kind of crane, special
Sign is, including crane arm and pylon, and the upper end of the crane arm is equipped with otic placode, and the otic placode passes through the second pin shaft and pulling plate
Second pin hole is hinged, and the pulling plate is hinged by the lower end of the first pin hole and the first pin shaft and pull rod, the upper end of the pull rod with
Pylon is hinged.
8. crane as claimed in claim 7, which is characterized in that the pull rod includes the more piece body of rod, is led between the adjacent body of rod
Cross that third pin shaft is hinged, one in multiple third pin shafts is bearing pin sensor, the bearing pin sensor and crane control system
Signal of uniting connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822270899.5U CN209396797U (en) | 2018-12-28 | 2018-12-28 | A kind of crane rod length adjustable structure and crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822270899.5U CN209396797U (en) | 2018-12-28 | 2018-12-28 | A kind of crane rod length adjustable structure and crane |
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| Publication Number | Publication Date |
|---|---|
| CN209396797U true CN209396797U (en) | 2019-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822270899.5U Active CN209396797U (en) | 2018-12-28 | 2018-12-28 | A kind of crane rod length adjustable structure and crane |
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| CN (1) | CN209396797U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109650273A (en) * | 2018-12-28 | 2019-04-19 | 山东大汉建设机械股份有限公司 | A kind of crane rod length adjustable structure, crane and method |
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2018
- 2018-12-28 CN CN201822270899.5U patent/CN209396797U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109650273A (en) * | 2018-12-28 | 2019-04-19 | 山东大汉建设机械股份有限公司 | A kind of crane rod length adjustable structure, crane and method |
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Address after: 250200 Shandong Ji'nan Zhangqiu City Ming Shui Economic Development Zone Patentee after: Dahan Technology Co.,Ltd. Address before: 250200 Shandong Ji'nan Zhangqiu City Ming Shui Economic Development Zone Patentee before: SHANDONG DAHAN CONSTRUCTION MACHINERY Co.,Ltd. |