CN203112389U - Balance arm of tower crane and tower crane - Google Patents
Balance arm of tower crane and tower crane Download PDFInfo
- Publication number
- CN203112389U CN203112389U CN 201320102292 CN201320102292U CN203112389U CN 203112389 U CN203112389 U CN 203112389U CN 201320102292 CN201320102292 CN 201320102292 CN 201320102292 U CN201320102292 U CN 201320102292U CN 203112389 U CN203112389 U CN 203112389U
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- equilibrium arm
- weight
- counterbalanced weight
- tower crane
- tower
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Abstract
The utility model provides a balance arm of a tower crane and a tower crane. The balance arm comprises a balance arm rack and a balancing weight, a first end of the balance arm rack is connected with the slewing tower of the tower crane, the balancing weight is arranged at a second end of the balance arm rack and comprises a plurality blocks of counterweight bodies, a part of counterweight bodies are distributed sequentially form the second end of the balance arm rack in the extending direction of the balance arm rack and gradually away from the balance arm rack to form a middle position balance weight, and the residual counterweight bodies are arranged on the side surface of the middle position balance weight to form a side position balance weight. According to the balance arm provided by the utility model, the barycenter of the balancing weight can move away from the center of gyration of the slewing tower under the premise of satisfying the ordinary trimming moment, and the weight of the balancing weight can be effectively decreased under the condition of the same counter weight effect, so as to achieve the effect of lightweight design.
Description
Technical field
The utility model relates to the elevator machinery field, more specifically, relates to a kind of equilibrium arm and tower crane of tower crane.
Background technology
As depicted in figs. 1 and 2, in the prior art, the equilibrium arm of tower crane comprises equilibrium arm jib 10 and counterbalanced weight 30, first end of equilibrium arm jib 10 is connected with the slewing tower of tower crane, counterbalanced weight 30 is arranged at second end of equilibrium arm jib 10 and comprises the polylith balance weight body that marks successively with 31 to 36, and equilibrium arm jib 10 links to each other with the slewing tower top of tower crane by pull bar 20.Wherein, polylith balance weight body 31 to 36 is arranged in second end of equilibrium arm jib 10 successively along the bearing of trend of equilibrium arm jib 10, and namely each balance weight body 31 to 36 of counterbalanced weight 30 is mode arranged side by side and arranges.In the above prior art, the center of gravity G1 of counterbalanced weight 30 is arranged in the midway location of each balance weight body 31 to 36 as shown in Figure 1, and center of gravity G1 also is positioned at the intersection point place of extended line and the equilibrium arm jib 10 of pull bar 20 in Fig. 1.Center of gravity G1 is A apart from the distance of body of the tower center of gyration.
There are following technical matters in the equilibrium arm of above prior art and tower crane: the center of gravity G1 of counterbalanced weight 30 is less apart from the distance A of the center of gyration O of slewing tower, and counterbalance effect is bad; Counterbalanced weight 30 total weightes of tower crane are laid particular stress on, and cause tower crane lifting pressure bigger, and economy is relatively poor.
The utility model content
The utility model purpose is to provide a kind of equilibrium arm and tower crane of tower crane, and the arrangement that is intended to solve in the prior art because of the polylith balance weight body of counterbalanced weight is the technical matters that counterbalance effect is bad, the counterbalanced weight total weight is laid particular stress on that block form is arranged the counterbalanced weight that brings.
The utility model provides a kind of equilibrium arm of tower crane, comprise equilibrium arm jib and counterbalanced weight, first end of equilibrium arm jib is connected with the slewing tower of tower crane, counterbalanced weight is arranged at second end of equilibrium arm jib and comprises the polylith balance weight body, a part of balance weight body begins from the outside of second end of equilibrium arm jib to arrange successively away from the equilibrium arm jib and form the meta counterbalanced weight that along the bearing of trend of equilibrium arm jib the remainder balance weight body of polylith balance weight body is arranged at the side of meta counterbalanced weight and forms side position counterbalanced weight in the polylith balance weight body.
Further, side position counterbalanced weight comprises two above balance weight body, and two above balance weight body are arranged at the both sides of meta counterbalanced weight respectively.
Further, side position counterbalanced weight comprises the even number balance weight body, and the even number balance weight body is arranged at the both sides of meta counterbalanced weight symmetrically.
Further, the long side direction of the horizontal rectangular cross-sectional plane of every balance weight body of side position counterbalanced weight is parallel to the bearing of trend of equilibrium arm jib.
Further, the meta counterbalanced weight comprises near first end of slewing tower with away from second end of slewing tower, compares second end of the more close meta counterbalanced weight of side position counterbalanced weight with first end of meta counterbalanced weight.
Further, side position counterbalanced weight comprises near first end of slewing tower with away from second end of slewing tower, the end face of second end of side position counterbalanced weight concordant with the end face of second end of meta counterbalanced weight or than the end face of second end of meta counterbalanced weight further from slewing tower.
Further, the equilibrium arm jib comprises a plurality of sides position support that extends respectively to both sides from second distolateral of the equilibrium arm jib, and the remainder balance weight body hangs on the support of corresponding side position correspondingly.
The utility model also provides a kind of tower crane, comprises slewing tower and the equilibrium arm that is arranged on the slewing tower, and wherein, this equilibrium arm is the equilibrium arm of aforesaid tower crane.
Equilibrium arm according to tower crane of the present utility model, owing to changed the arrangement of polylith balance weight body, a part of balance weight body is arranged away from the equilibrium arm jib successively from the beginning of equilibrium arm jib second end outside along the bearing of trend of equilibrium arm jib and form the meta counterbalanced weight, the remainder balance weight body of polylith balance weight body is arranged at the side of meta counterbalanced weight and forms side position counterbalanced weight.Above arrangement is under the prerequisite that satisfies tower crane normal equilibrium moment, state the counterbalanced weight arrangement of middle equilibrium arm with respect to existing skill, the center of gravity that can make counterbalanced weight is more away from the center of gyration of slewing tower, reaching under the situation of identical counterweight effect, can effectively alleviate the weight of counterbalanced weight, reach the effect of light-weight design.The dress part weight that goes up of whole tower crane alleviates immediately, and the demand of tower crane lifting power also reduces, and economy improves.
Description of drawings
The accompanying drawing that constitutes the application's a part is used to provide further understanding of the present utility model, and illustrative examples of the present utility model and explanation thereof are used for explaining the utility model, do not constitute improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the counterweight arrangement structure scheme drawing of equilibrium arm of the tower crane of prior art;
Fig. 2 is the plan structure scheme drawing of Fig. 1;
Fig. 3 is the counterweight arrangement structure scheme drawing according to the equilibrium arm of tower crane of the present utility model;
Fig. 4 is the plan structure scheme drawing of Fig. 3;
Fig. 5 is the X-direction structure for amplifying scheme drawing of Fig. 4.
The specific embodiment
Describe the utility model below with reference to the accompanying drawings and in conjunction with the embodiments in detail.Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
To shown in Figure 5, the tower crane of present embodiment comprises slewing tower, equilibrium arm and pull bar 20 as Fig. 3.Wherein, equilibrium arm comprises equilibrium arm jib 10 and counterbalanced weight 30, and pull bar 20 connects the slewing tower top of equilibrium arm jib 10 and tower crane.
Above arrangement is under the prerequisite that satisfies tower crane normal equilibrium moment, state the counterbalanced weight arrangement of middle equilibrium arm with respect to existing skill, the center of gravity that can make counterbalanced weight is more away from the center of gyration of slewing tower, reaching under the situation of identical counterweight effect, can effectively alleviate the weight of counterbalanced weight, reach the effect of light-weight design.Use the equilibrium arm of present embodiment in tower crane, the dress part weight that goes up of whole tower crane alleviates immediately, and the demand of tower crane lifting power also reduces, and economy improves.For ease of understanding and contrast, in Fig. 3 and Fig. 4, except the position of the center of gravity G2 that marked the counterbalanced weight 30 in the present embodiment and center of gravity G2 apart from the body of the tower center of gyration apart from the B, also the center of gravity G1 of counterbalanced weight 30 in the prior art illustrated in figures 1 and 2 and center of gravity G1 are marked apart from the distance A of body of the tower center of gyration.As shown in Figure 3 and Figure 4, be compared with the prior art, counterbalanced weight 35,36 is arranged in the side of meta counterbalanced weight, like this under the situation of the counterbalanced weight that uses identical weight, the center of gravity G2 of the counterbalanced weight 30 of present embodiment is farther apart from body of the tower than the center of gravity G1 of the counterbalanced weight 30 of prior art, namely apart from B＞A.Perhaps because m1 * A=m2 * B, and B＞A, m1＞m2 then, wherein, m1 and m2 represent the weight of the counterbalanced weight of prior art and present embodiment respectively.So, identical and use under the situation of counterbalanced weight of Different Weight in equilibrium arm length, when using the arrangement of present embodiment, use lighter counterbalanced weight can reach balancing torque same as the prior art.
In the present embodiment, equilibrium arm jib 10 comprises two side position supports 11 that extend respectively to both sides from second distolateral of equilibrium arm jib 10, and balance weight body 35 and 36 hangs on the corresponding side position support 11 correspondingly.
Need to prove in addition, can realize that the lighter counterbalanced weight of use of the present utility model reaches the purpose of balancing torque same as the prior art as long as side position counterbalanced weight is set in meta counterbalanced weight side, and for the concrete quantity of side position counterbalanced weight and unrestricted.Certainly, in order to guarantee the omnibearing balance of equilibrium arm, preferably side position counterbalanced weight comprises two above balance weight body, the both sides that two above balance weight body are arranged at the meta counterbalanced weight respectively are even greatly as much as possible with the clump weight weight that reaches both sides, more preferably be that side position counterbalanced weight comprises the even number balance weight body, the even number balance weight body is arranged at the both sides of meta counterbalanced weight symmetrically.
The meta counterbalanced weight comprises near first end of slewing tower with away from second end of slewing tower, compares second end of the more close meta counterbalanced weight of side position counterbalanced weight with first end of meta counterbalanced weight.More specifically, side position counterbalanced weight comprises near first end of slewing tower with away from second end of slewing tower, the end face of second end of side position counterbalanced weight concordant with the end face of second end of meta counterbalanced weight or than the end face of second end of meta counterbalanced weight further from slewing tower.Arranging like this can make the counterbalanced weight center of gravity as far as possible away from the center of gyration O of slewing tower, realizes weight loss effect better.
In the present embodiment, the long side direction of the horizontal rectangular cross-sectional plane of every balance weight body of side position counterbalanced weight is parallel to the bearing of trend of equilibrium arm jib 10.The less moment of moment that the side position support 11 that arranging like this can make equilibrium arm jib 10 bears.
As can be seen from the above description, the utility model the above embodiments have realized following technique effect: under the constant situation of crane arm jib length, use lighter counterbalanced weight can reach the counterweight requirement, because counterweight alleviates, the dress part weight that goes up of whole tower crane alleviates immediately, the demand of tower crane lifting power also reduces, and economy improves.
The above is preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (8)
1. the equilibrium arm of a tower crane, comprise equilibrium arm jib (10) and counterbalanced weight (30), first end of described equilibrium arm jib (10) is connected with the slewing tower of described tower crane, described counterbalanced weight (30) is arranged at second end of described equilibrium arm jib (10) and comprises the polylith balance weight body, it is characterized in that, a part of balance weight body begins from the outside of second end of described equilibrium arm jib (10) to arrange successively away from equilibrium arm jib (10) and form the meta counterbalanced weight that along the bearing of trend of described equilibrium arm jib (10) the remainder balance weight body of described polylith balance weight body is arranged at the side of described meta counterbalanced weight and forms side position counterbalanced weight in the described polylith balance weight body.
2. the equilibrium arm of tower crane according to claim 1 is characterized in that, described side position counterbalanced weight comprises two above balance weight body, and described two above balance weight body are arranged at the both sides of described meta counterbalanced weight respectively.
3. the equilibrium arm of tower crane according to claim 2 is characterized in that, described side position counterbalanced weight comprises the even number balance weight body, and described even number balance weight body is arranged at the both sides of described meta counterbalanced weight symmetrically.
4. the equilibrium arm of tower crane according to claim 3 is characterized in that, the long side direction of the horizontal rectangular cross-sectional plane of every balance weight body of described side position counterbalanced weight is parallel to the bearing of trend of described equilibrium arm jib (10).
5. according to the equilibrium arm of each described tower crane in the claim 1 to 4, it is characterized in that, described meta counterbalanced weight comprises near first end of described slewing tower with away from second end of described slewing tower, compare second end of the more close described meta counterbalanced weight of described side position counterbalanced weight with first end of described meta counterbalanced weight.
6. the equilibrium arm of tower crane according to claim 5, it is characterized in that, described side position counterbalanced weight comprises near first end of described slewing tower with away from second end of described slewing tower, the end face of second end of described side position counterbalanced weight concordant with the end face of second end of described meta counterbalanced weight or than the end face of second end of described meta counterbalanced weight further from described slewing tower.
7. according to the equilibrium arm of each described tower crane in the claim 1 to 4, it is characterized in that, described equilibrium arm jib (10) comprises a plurality of sides position support (11) that extends respectively to both sides from second distolateral of described equilibrium arm jib (10), and described remainder balance weight body hangs on the corresponding side position support (11) correspondingly.
8. a tower crane comprises slewing tower and the equilibrium arm that is arranged on the described slewing tower, it is characterized in that described equilibrium arm is the equilibrium arm according to each described tower crane in the claim 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320102292 CN203112389U (en) | 2013-03-06 | 2013-03-06 | Balance arm of tower crane and tower crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320102292 CN203112389U (en) | 2013-03-06 | 2013-03-06 | Balance arm of tower crane and tower crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203112389U true CN203112389U (en) | 2013-08-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320102292 Expired - Lifetime CN203112389U (en) | 2013-03-06 | 2013-03-06 | Balance arm of tower crane and tower crane |
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| Country | Link |
|---|---|
| CN (1) | CN203112389U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103112787A (en) * | 2013-03-06 | 2013-05-22 | 中联重科股份有限公司 | Tower crane and balance arm thereof |
-
2013
- 2013-03-06 CN CN 201320102292 patent/CN203112389U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103112787A (en) * | 2013-03-06 | 2013-05-22 | 中联重科股份有限公司 | Tower crane and balance arm thereof |
| CN103112787B (en) * | 2013-03-06 | 2015-04-29 | 中联重科股份有限公司 | Tower crane and balance arm thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130807 |
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| CX01 | Expiry of patent term |