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Rotary table and engineering machine

A technology of construction machinery and turntable, which is applied in the field of machinery, can solve the problems of local weld seams of bolt fracture, local stress concentration, and potential safety hazards, and achieve the effects of preventing local weld seam cracking, reducing local stress concentration, and improving safety

Active Publication Date: 2016-03-02
HUNAN SANY ROAD MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing tilt-back turntable is affected by the overturning moment of the jib, and the rear part of the turntable is subjected to a large tension, which is prone to local stress concentration
In engineering practice, there will be failures such as bolt breakage and local weld cracking, and once a failure occurs here, the expansion will be very rapid, posing a great safety hazard

Method used

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  • Rotary table and engineering machine
  • Rotary table and engineering machine
  • Rotary table and engineering machine

Examples

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Embodiment Construction

[0020] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0021] The front and rear directions described in the present invention are based on the attached figure 1 The anteroposterior orientation shown is described.

[0022] Combine below Figures 1 to 3 , the preferred embodiment of the present invention is described in further detail,

[0023] Such as figure 1 Shown, the preferred turntable 4 of the present invention (as image 3 Shown), comprising a base plate 40, a first vertical plate 41, a second vertical plate 42, the first vertical plate 41 and the second vertical plate 42 are vertically welded on the base plate 40. A plurality of bolt holes are opened on the bottom plate 40 . A first pin hole 410 and a second pin hole 411 are opened on t...

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PUM

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Abstract

The invention discloses a rotary table and an engineering machine. The rotary table comprises a baseplate, a first vertical plate and a second vertical plate; the first vertical plate and the second vertical plate are mounted on the baseplate; a first pin shaft hole and a second pin shaft hole are formed in the first vertical plate; a third pin shaft hole and a fourth pin shaft hole are formed in the second vertical plate. A counter weight may be mounted on the rotary table, and therefore, the problem of stress concentration of the rotary table is eased, occurring of faults of bolt breakage and partial weld joint cracking is prevented and the safety performance is improved.

Description

technical field [0001] The invention relates to the field of machinery, in particular to a turntable and engineering machinery. Background technique [0002] In the construction machinery industry (including concrete pump trucks, placing booms, hoisting machinery, etc.), the turntable is used as a connecting part for the boom and the fixed base, and its manifestations are various. Generally speaking, the bottom plate is processed with evenly distributed through holes, which can be used for bolts to pass through and connect with the fixed base below; generally two holes are processed on the vertical plate, one is connected with the arm frame, and the other is connected with the oil cylinder. connect. [0003] Patent CN302797805 discloses a turntable appearance, this kind of turntable is a typical concrete pump truck turntable, without a counterweight device, the bottom plate is processed with holes to connect with the fixed base, and the vertical plate is processed with hole...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66C23/84B66C23/88F16F15/28E02F5/14E02F3/58
CPCB66C23/84B66C23/88E02F3/58E02F5/14F16F15/28
Inventor 邱剑胡柱周惠琴
Owner HUNAN SANY ROAD MACHINERY
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