CN104176659B - Counter-jib for derrick crane - Google Patents

Counter-jib for derrick crane Download PDF

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Publication number
CN104176659B
CN104176659B CN201410387527.4A CN201410387527A CN104176659B CN 104176659 B CN104176659 B CN 104176659B CN 201410387527 A CN201410387527 A CN 201410387527A CN 104176659 B CN104176659 B CN 104176659B
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CN
China
Prior art keywords
counter
jib
weight construction
casing
filler
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Application number
CN201410387527.4A
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Chinese (zh)
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CN104176659A (en
Inventor
王晓平
周成强
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四川建设机械(集团)股份有限公司
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Publication date
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Priority to CN201410387527.4A priority Critical patent/CN104176659B/en
Publication of CN104176659A publication Critical patent/CN104176659A/en
Application granted granted Critical
Publication of CN104176659B publication Critical patent/CN104176659B/en

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Abstract

The invention discloses a kind of counter-jib, especially disclose a kind of counter-jib for derrick crane, belong to crane gear part design manufacturing technology field.Thering is provided a kind of low cost of manufacture, aerial dismounting risk is little, uses the counter-jib of the derrick crane that safety coefficient is high.Described counter-jib includes counter-jib body, end at described counter-jib body is disposed with counter weight construction, described counter weight construction includes counterweight shell and filler, described counterweight shell is provided with fixed installation sector, described filler is seated in described counterweight shell, and described counter weight construction is arranged in the end of described counter-jib body by the fixed installation sector of described counterweight shell.

Description

Counter-jib for derrick crane

Technical field

The present invention relates to a kind of counter-jib, especially relate to a kind of counter-jib for derrick crane, belong to crane gear part design manufacturing technology field.

Background technology

For the derrick crane of urban construction typically at the local work of building dense, working range limitation is very big, so the design of counter-jib is particularly important, the movable arm type tower crane that therefore counter-jib is shorter receives the favor of user in urban construction.

Existing whip-typed tower crane is shorter due to counter-jib, in the city of building dense, has the biggest advantage.But when designing balancing weight, the shortcoming of the type derrick crane maximum is also that counter-jib is short.

According to bemding moment formula: M=F × L knows: same moment of flexure, L is the least, and F is the biggest.Therefore the weight of the balancing weight that the balancing weight weight of whip-typed tower crane is just arranged than common derrick crane is much bigger.

The balancing weight being traditionally used for derrick crane mainly has cast iron and two kinds of forms of concrete.The balancing weight that the first cast iron does is high due to its cost, adds the price of complete machine of tower crane, thus reduces movable arm type tower crane and choose rate;The balancing weight that the second concrete does, although its low cost, but its proportion is little, and volume is big, transport inconvenience, brings bigger potential safety hazard to aerial dismounting.

Summary of the invention

The technical problem to be solved is: providing a kind of low cost of manufacture, aerial dismounting risk is little, uses the counter-jib for derrick crane that safety coefficient is high.

A kind of counter-jib for derrick crane is the technical scheme is that by solving above-mentioned technical problem, including counter-jib body, end at described counter-jib body is disposed with counter weight construction, described counter weight construction includes counterweight shell and filler, described counterweight shell is provided with mechanism for installing, described filler is seated in described counterweight shell, and described counter weight construction is arranged in the end of described counter-jib body by the mechanism for installing of described counterweight shell.

Further, described counterweight shell is by the regular casing containing receiving chamber of Plate Welding, and described filler is filled in the receiving chamber of described rule casing, and described mechanism for installing is arranged symmetrically on the top outside described rule box bilateral wall.

Such scheme it is preferable that, described regular casing is cuboid, described mechanism for installing be arranged symmetrically on cuboid described rule two side-wall outer side of casing top.

The another kind of such scheme it is preferable that, the projection in its longitudinal section of the described regular casing is in " convex " font, and described mechanism for installing is arranged symmetrically on the top of described rule two side-wall outer side of casing of " convex " font.

Further, described mechanism for installing is the hangers being arranged symmetrically on described rule wall box outside top, and described counter weight construction is arranged in the end of described counter-jib body by described hangers.

It is further, described counter-jib also includes counter weight construction space automatic regulating device, by outside crane gear be lifted into described in state the described counter weight construction of counter-jib body tip by described counter weight construction space automatic regulating device adjustment spacing each other.

It is further, described counter weight construction space automatic regulating device includes adjusting oblique frame and adjusting passage axle, described adjusting the both sides being arranged on described counter-jib body tip that oblique frame is spaced, the described passage axle that adjusts is perpendicular to the outside being arranged on regular wall box below described hangers of described rule wall box.

Further, between the diapire and the sidewall that accommodate chamber of described rule casing, there also is provided reinforcement gusset.

Further, described filler is 4.3~4.7g/ by density3Huge sum of money stone particulate material or be made up of particle diameter cast iron sand granule between 2-4.

The another kind of such scheme it is preferable that, described filler is for being 4.3~4.7g/ by density3Huge sum of money stone particulate material and cement be mixed in proportion and form congealed mixt.

The invention has the beneficial effects as follows: owing to described counter weight construction is not less than 4.0g/ by counterweight shell and the density being seated in described counterweight shell3Filler constitute, be not so to be made up of the cast iron that cost is higher due to whole counter weight construction, so can the cost reducing whole derrick crane by a relatively large margin.The density adding described filler is not less than 4.0g/3, specific density is at 1.9-2.9g/cm again3The density of concrete much bigger, such that it is able to the volume reducing each counter weight construction by a relatively large margin, both convenient transport, facilitated again aerial dismounting, and reached to reduce described derrick crane and dismount the purpose of risk in the air.Meanwhile, the intensity of the strength ratio concrete of described counterweight shell can be much higher, so, moreover it is possible to the effective use safety coefficient improving described derrick crane.

Accompanying drawing explanation

Fig. 1 is the structural representation of the counter-jib that the present invention relates to;

Fig. 2 is the counter weight construction that the present invention relates to layout schematic diagram on counter-jib body;

Fig. 3 is the schematic three dimensional views of the therein a kind of counter weight construction that the present invention relates to;

Fig. 4 is the schematic three dimensional views of the another kind of counter weight construction that the present invention relates to.

Figure is labeled as: counter-jib body 1, counter weight construction 2, counterweight shell 3, filler 4, mechanism for installing 5, accommodate chamber 6, hangers 7, counter weight construction space automatic regulating device 8, adjust oblique frame 9, adjust passage axle 10, strengthen gusset 11.

Detailed description of the invention

As shown in Figure 1, Figure 2, be a kind of low cost of manufacture of providing of the present invention shown in Fig. 3 and Fig. 4, aerial dismounting risk is little, uses the counter-jib for derrick crane that safety coefficient is high.Described counter-jib includes counter-jib body 1, end at described counter-jib body 1 is disposed with counter weight construction 2, it is characterized in that: described counter weight construction 2 includes counterweight shell 3 and filler 4, described counterweight shell 3 is provided with mechanism for installing 5, described filler 4 is seated in described counterweight shell 3, and described counter weight construction 2 is arranged in the end of described counter-jib body 1 by the mechanism for installing 5 of described counterweight shell 3.In such scheme, owing to described counter weight construction 2 is not less than 4.0g/ by counterweight shell 3 and the density being seated in described counterweight shell 33Filler 4 constitute, be not so to be made up of the cast iron that cost is higher due to whole counter weight construction 2, so can the cost reducing whole derrick crane by a relatively large margin.The density adding described filler 4 is not less than 4.0g/3, specific density is at 1.9-2.9g/cm again3The density of concrete much bigger, such that it is able to the volume reducing each counter weight construction 2 by a relatively large margin, both convenient transport, facilitated again aerial dismounting, and reached to reduce described derrick crane and dismount the purpose that risk is little in the air.Meanwhile, the intensity of the strength ratio concrete of described counterweight shell 3 can be much higher, so, moreover it is possible to the effective use safety coefficient improving described derrick crane.

In above-mentioned embodiment, in order to reduce described counterweight shell 3 and the manufacturing cost of described mechanism for installing 5, facilitate fabrication and installation, and then further reduce the cost of described derrick crane, described counterweight shell 3 is for by the regular casing containing receiving chamber 6 of Plate Welding, described filler 4 is filled in the receiving chamber 6 of described rule casing, and described mechanism for installing 5 is arranged symmetrically on the top outside described rule box bilateral wall;Described mechanism for installing 5 is the hangers 7 being arranged symmetrically on described rule wall box outside top, and described counter weight construction 2 is arranged in the end of described counter-jib body 1 by described hangers 7;Described filler 4 is 4.3~4.7g/ by density3Huge sum of money stone particulate material or be made up of particle diameter cast iron sand granule between 2-4 or for being 4.3~4.7g/ by density3Huge sum of money stone particulate material and cement be mixed in proportion and form congealed mixt.So, described counterweight shell 3 just can use the steel plate of routine to weld, and both can reduce production cost, convenient makes, facilitate mechanism for installing 5 layout and with the connection of counterweight shell 3;And huge sum of money stone is the source material in environment, obtains and be ground into particulate material, and cast iron sand is the leftover bits and pieces in Foundry Production, cost the most very cheap.And in order to strengthen the intensity of described rule casing, between the diapire and the sidewall that accommodate chamber 6 of described rule casing, there also is provided reinforcement gusset 11.As such, it is possible to further strengthen the use safety coefficient of described derrick crane.

Use for reference the structure of existing balancing weight, avoid described counter-jib body 1 is carried out great design alteration, described regular casing can be arranged to cuboid, and described mechanism for installing 5 is arranged symmetrically on the top of described rule two side-wall outer side of casing of cuboid;The projection that described regular casing can also be arranged in its longitudinal section is in " convex " font, and described mechanism for installing 5 is arranged symmetrically on the top of described rule two side-wall outer side of casing of " convex " font.So, the most described regular casing is that cuboid is still " convex " font, the place that its top coordinates with described counter-jib body 1 does not all have big change, described counter-jib body 1 can continue to use existing structure.

The structure using for reference existing counter-jib simultaneously, in order to further improve the convenience of the described counter weight construction 2 dismounting on described counter-jib body, described counter-jib also includes counter weight construction space automatic regulating device 8, by outside crane gear be lifted into described in state the described counter weight construction 2 of counter-jib body 1 end and adjust spacing each other by described counter weight construction space automatic regulating device 8.Preferably counter weight construction space automatic regulating device 8 is to include adjusting oblique frame 9 and adjusting the structure of passage axle 10, described adjusting the both sides being arranged on described counter-jib body 1 end that oblique frame 9 is spaced, the described passage axle 10 that adjusts is perpendicular to the outside being arranged on regular wall box below described hangers 7 of described rule wall box.So, by outside crane gear be lifted into described in state the counter weight construction 2 of counter-jib body 1 end self gravity just can be utilized to adjust oblique frame 9 promote adjustment sideling to elapse axle 10 each piece of counterweight to be compressed by described, need not manually be adjusted, not only convenient installation, installation risk is the least, and avoids the play of balancing weight horizontal direction when tower crane works and produce danger.

Claims (5)

1. for a counter-jib for derrick crane, including counter-jib body (1), at the end of described counter-jib body (1) End is disposed with counter weight construction (2), it is characterised in that: described counter weight construction (2) includes counterweight shell (3) and filler (4), Being provided with mechanism for installing (5) on described counterweight shell (3), described filler (4) is seated in described counterweight shell (3) In, described counter weight construction (2) is arranged in described counter-jib body by the mechanism for installing (5) of described counterweight shell (3) (1) end,
Described counterweight shell (3) is for by the regular casing containing receiving chamber (6) of Plate Welding, described filler (4) Being filled in the receiving chamber (6) of described rule casing, described mechanism for installing (5) is symmetrically arranged at described rule case Top outside body two side,
Described regular casing is cuboid, and described mechanism for installing (5) is for being symmetrically arranged at described rule casing The hangers (7) at side-wall outer side top, described counter weight construction (2) is arranged in described counter-jib originally by described hangers (7) The end of body (1),
Described counter-jib also includes counter weight construction space automatic regulating device (8), is lifted into described flat by outside crane gear The described counter weight construction (2) of weighing apparatus arm body (1) end adjusts phase by described counter weight construction space automatic regulating device (8) Spacing between Hu,
The projection in its longitudinal section of the described regular casing is in " convex " font, and described mechanism for installing (5) is symmetrically It is arranged in the top of described rule two side-wall outer side of casing of " convex " font.
Counter-jib for derrick crane the most according to claim 1, it is characterised in that: between described counter weight construction Including adjusting oblique frame (9) and adjusting passage axle (10) away from automatic regulating apparatus (8), the oblique frame of described adjustment (9) is mutual Every the both sides being arranged on described counter-jib body (1) end, described adjustment passage axle (10) is perpendicular to described rule casing The outside of the regular wall box being arranged on described hangers (7) lower section of sidewall.
Counter-jib for derrick crane the most according to claim 1, it is characterised in that: at described rule casing Accommodate and between diapire and the sidewall in chamber (6), there also is provided reinforcement gusset (11).
Counter-jib for derrick crane the most according to claim 1, it is characterised in that: described filler (4) by Density is 4.3~4.7g/3Huge sum of money stone particulate material or be made up of particle diameter cast iron sand granule between 2-4.
Counter-jib for derrick crane the most according to claim 1, it is characterised in that: described filler (4) is It is 4.3~4.7g/ by density3The congealed mixt that is mixed in proportion of huge sum of money stone particulate material and cement.
CN201410387527.4A 2014-08-07 Counter-jib for derrick crane CN104176659B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410387527.4A CN104176659B (en) 2014-08-07 Counter-jib for derrick crane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410387527.4A CN104176659B (en) 2014-08-07 Counter-jib for derrick crane

Publications (2)

Publication Number Publication Date
CN104176659A CN104176659A (en) 2014-12-03
CN104176659B true CN104176659B (en) 2016-11-30

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1718945A (en) * 2005-04-29 2006-01-11 夏咸仁 Engineering machinery counter weight
CN2771167Y (en) * 2005-03-02 2006-04-12 李林 Combined counterpoise
CN102036931A (en) * 2008-05-23 2011-04-27 太平洋水泥株式会社 Counter weight
CN202296916U (en) * 2011-10-24 2012-07-04 中联重科股份有限公司 Counterweight device and tower crane
CN204111221U (en) * 2014-08-07 2015-01-21 四川建设机械(集团)股份有限公司 For the equilibrium arm of tower crane

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2771167Y (en) * 2005-03-02 2006-04-12 李林 Combined counterpoise
CN1718945A (en) * 2005-04-29 2006-01-11 夏咸仁 Engineering machinery counter weight
CN102036931A (en) * 2008-05-23 2011-04-27 太平洋水泥株式会社 Counter weight
CN202296916U (en) * 2011-10-24 2012-07-04 中联重科股份有限公司 Counterweight device and tower crane
CN204111221U (en) * 2014-08-07 2015-01-21 四川建设机械(集团)股份有限公司 For the equilibrium arm of tower crane

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