CN206827981U - A kind of tower crane counter-jib - Google Patents
A kind of tower crane counter-jib Download PDFInfo
- Publication number
- CN206827981U CN206827981U CN201720621277.5U CN201720621277U CN206827981U CN 206827981 U CN206827981 U CN 206827981U CN 201720621277 U CN201720621277 U CN 201720621277U CN 206827981 U CN206827981 U CN 206827981U
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- CN
- China
- Prior art keywords
- arm joint
- pull bar
- tower crane
- detachable unit
- counterweight
- 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.)
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Abstract
The utility model belongs to constructional engineering machinery field, a kind of specifically tower crane counter-jib of derrick crane, including a section counterweight arm joint and more piece detachable unit arm joint, pull bar is fixed with counterweight arm joint, the specification of detachable unit arm joint is identical, and its both ends is arranged with connection otic placode and pin-and-hole for joining end to end and connecting weight arm and tower crane main body；Counterweight arm joint and pull bar are connected by connecting bearing pin with first segment detachable unit arm joint, after more piece detachable unit arm joint head and the tail concatenate, final section detachable unit arm joint connects tower crane main body, or, counterweight arm joint and pull bar are directly connected by connecting bearing pin with tower crane main body.The freely adjustable counterweight arm lengths of the utility model, effect reduce counter-jib windward side in order to realize weathercock effect, are widely used in the tower crane of different size.
Description
Technical field
The utility model belongs to a kind of tower crane counter-jib in constructional engineering machinery field, specifically derrick crane.
Background technology
With the needs of development and the construction of building trade, derrick crane work range constantly becomes big, to rising
The requirement of weight is also increasing, and jib length constantly lengthens.Thus bring counter-jib length and counterweight quality not
Disconnected increase, balancing counterbalance design and management makes troubles.Meanwhile counter-jib is elongated adds windward side machine, it is not easy to realize
Weathercock effect.Furthermore it is cost-effective, realizes a tractor serves several purposes, existing derrick runway girder there are a variety of change arms combinations, and difference becomes arms
The corresponding counterweight of combination is not quite similar, and becomes arm combination and increases, brings counterweight species and specification accordingly to increase, same inconvenience
In design and management.In addition, the pull bar installed on counter-jib is in pull bar with tower head or turret when being connected, extra lifting is needed
Equipment slings pull bar or pull bar, installation inconvenience are lifted or elected to manpower.
The content of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, there is provided a kind of tower crane counter-jib, freely adjustable weight arm
Length, effect reduce counter-jib windward side in order to realize weathercock effect, are widely used in the tower crane of different size.
To realize above-mentioned technical purpose, scheme provided by the utility model is：A kind of tower crane counter-jib, including a section counterweight
Arm joint and more piece detachable unit arm joint, pull bar are fixed with counterweight arm joint, the specification of detachable unit arm joint is identical, its both ends
It is arranged with the connection otic placode and pin-and-hole for joining end to end and connecting weight arm and tower crane main body；Counterweight arm joint and pull bar are equal
It is connected by connecting bearing pin with first segment detachable unit arm joint, after more piece detachable unit arm joint head and the tail concatenate, final section
Detachable unit arm joint connects tower crane main body, or, counterweight arm joint and pull bar are directly connected by connecting bearing pin with tower crane main body.
Moreover, the counterweight arm joint is provided with the support otic placode for cylinder lever connecting rod support, support otic placode is provided with up and down
Two sets of pin-and-holes, pull bar support bottom are provided with the through hole adaptable with two sets of pin-and-holes on support otic placode, pull bar support and support otic placode
By two mounting pin axis connections, pull bar frame upper be provided be used to lifting pull bar lift groove.
The beneficial effects of the utility model are：The design of detachable unit arm joint, it can freely adjust counterweight according to required
Arm lengths, needed for acquisition while counterbalance moment, reduce the front face area of counter-jib, be easy to implement galianconism it is long when tower crane wind
Effect is marked, also can control the radius of gyration of counter-jib；Different type of machines can be matched somebody with somebody by changing the specification realization of detachable unit arm joint
Weighing arm section it is general, reach that counterweight species is less, layman coordinates purpose attractive in appearance, reduce design cost, increase interchangeability；Counterweight
The pull bar support set in arm joint facilitates the installation of pull bar, uses manpower and material resources sparingly.
Brief description of the drawings
Fig. 1 is total shape structural representation of the present utility model.
Fig. 2 is the structural representation of detachable unit arm joint.
Fig. 3 is the structural representation of counterweight arm joint.
Fig. 4 is the structural representation of pull bar support.
Wherein, 1, counterweight, 2, counterweight arm joint, 3, pull bar support, 4, pull bar, 5, connection bearing pin, 6, detachable unit arm joint,
7th, connection otic placode, 8, support otic placode, 9, installation bearing pin, 10, lift groove.
Embodiment
Below in conjunction with the accompanying drawings and embodiment the utility model is described in further detail.
The present embodiment provides a kind of tower crane counter-jib, as shown in Fig. 1 ~ 3, including a section counterweight arm joint 2 and more piece it is detachable
Unit arm joint 6, pull bar 3 is fixed with counterweight arm joint 2, the specification of detachable unit arm joint 6 is identical, and its both ends is arranged with use
In the connection otic placode 7 and pin-and-hole that join end to end and connect weight arm 2 and tower crane main body；Counterweight arm joint 2 and pull bar 4 pass through connection
Bearing pin 5 is connected with first segment detachable unit arm joint 6, and after more piece detachable unit arm joint 6 concatenates from beginning to end, final section is detachable
Unit arm joint 6 connects tower crane main body, or, counterweight arm joint 2 and pull bar 4 are directly connected by connecting bearing pin 5 with tower crane main body.
According to the specific requirement of practical operation, the quantity of detachable unit arm joint 6 is selected, obtains the counterweight forces of different length
Arm, so as to adjust counterbalance moment size by changing torque arm length, to coordinate corresponding lifting operation load, or inoperative shape
The hypsokinesis moment of flexure that tower body is born during state meets GB/T13752- 1992《Design of tower crane specification》Requirement.Needed for acquisition
While counterbalance moment, reduce the front face area of counter-jib, be easy to implement galianconism it is long when tower crane weathercock effect, also can control
The radius of gyration of counter-jib.At the same time, different type of machines can realize counterweight arm joint by changing the specification of detachable unit arm joint 6
2 it is general, reach that the species of counterweight 1 is less, layman coordinates purpose attractive in appearance, reduce design cost, increase interchangeability.
Further, as shown in figure 4, the counterweight arm joint 2 is provided with the support otic placode 8 for cylinder lever connecting rod support 3, branch
Frame otic placode 8 is provided with upper and lower two sets of pin-and-holes, and the bottom of pull bar support 3 is provided with the through hole adaptable with two sets of pin-and-holes on support otic placode 8,
Pull bar support 3 is connected with support otic placode 8 by two installation bearing pins 9, and the top of pull bar support 3, which is provided with, to be used to lift lifting for pull bar
Groove 10.
During off working state, wherein one installation bearing pin 9 is removed, pull bar support 3 can rotate around another installation bearing pin 9,
Lie in arm joint；During working condition, bearing pin 9 is installed by two pieces and is installed on the support otic placode 9 of counterweight arm joint 2, pull bar branch
Frame 3 is in vertical posture, can lift pull bar 4 by the groove 10 of lifting at the top of it, be easy to pull bar 4 to install.
Described above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of the utility model principle is not departed from, some improvement or deformation can also be made, these improve or
Deformation also should be regarded as the scope of protection of the utility model.
Claims (2)
- A kind of 1. tower crane counter-jib, it is characterised in that：Including a section counterweight arm joint and more piece detachable unit arm joint, counterweight arm joint On be fixed with pull bar, the specification of detachable unit arm joint is identical, and its both ends is arranged with for joining end to end and connect counterweight The connection otic placode and pin-and-hole of arm and tower crane main body；Counterweight arm joint and pull bar are by connecting bearing pin and first segment detachable unit arm Section connection, after more piece detachable unit arm joint head and the tail concatenate, final section detachable unit arm joint connection tower crane main body, Huo,Pei Weighing arm section and pull bar are directly connected by connecting bearing pin with tower crane main body.
- A kind of 2. tower crane counter-jib according to claim 1, it is characterised in that：The counterweight arm joint, which is provided with, to be used to connect The support otic placode of pull bar support, support otic placode are provided with upper and lower two sets of pin-and-holes, pull bar support bottom be provided with two on support otic placode The adaptable through hole of pin-and-hole is covered, with support otic placode by two mounting pin axis connections, pull bar frame upper is provided with to be used pull bar support Groove is lifted in lift pull bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720621277.5U CN206827981U (en) | 2017-05-31 | 2017-05-31 | A kind of tower crane counter-jib |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720621277.5U CN206827981U (en) | 2017-05-31 | 2017-05-31 | A kind of tower crane counter-jib |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206827981U true CN206827981U (en) | 2018-01-02 |
Family
ID=60773445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720621277.5U Active CN206827981U (en) | 2017-05-31 | 2017-05-31 | A kind of tower crane counter-jib |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206827981U (en) |
-
2017
- 2017-05-31 CN CN201720621277.5U patent/CN206827981U/en active Active
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