CN201363024Y

CN201363024Y - Boom latch hook of concrete boom pump

Info

Publication number: CN201363024Y
Application number: CNU2009200102635U
Authority: CN
Inventors: 杨宝东; 赵平宏
Original assignee: Liaoning Hainuo Construction Machinery Group Co Ltd
Current assignee: Liaoning Hainuo Construction Machinery Group Co Ltd
Priority date: 2009-01-20
Filing date: 2009-01-20
Publication date: 2009-12-16
Anticipated expiration: 2019-01-20

Abstract

The utility model relates to a structure design of a boom latch hook of concrete boom pump, which relates to the structure design of a latch hook, which can realize the automatic locking and unlocking of a boom of a concrete boom pump, in particular to a boom latch hook of concrete boom pump, which is locked through gravity and is opened through the gravity of a lever. The boom latch hook of concrete boom pump is characterized by comprising a latch hook, a weight connected with the latch hook, a limiting column, a locking column and a rotation shaft, wherein the side surface of a boom of concrete boom pump is provided with a latch hook with the weight, the limiting column is arranged on the rotating direction of the latch hook, and the locking column is arranged on the locked boom of concrete boom pump. The connecting line between the weight and the rotation shaft forms an included angle of 107 degrees with a latch hook surface of the latch hook, and forms an included angle of 17 degrees with an axial cord of the boom of concrete boom pump. The boom latch hook of concrete boom pump of the utility model has the advantages that the automatic unlocking and locking of the boom can be realized based on satisfying the work of the boom of a concrete boom pump, the design is reasonable, the structure is simple, and the performance is reliable.

Description

A kind of concrete arm-pump jib latch hook

Technical field

The utility model is to concrete arm-pump jib latch hook structure design, relate to a kind of latch hook structure design that realizes concrete arm-pump jib automatic locking or open, particularly a kind of concrete arm-pump jib latch hook of opening by gravity locking, lever gravity.

Background technology

The jib of concrete arm-pump need be opened when work, and the jib of concrete arm-pump need fold and tighten up after work was finished.Because opening fully and locking of concrete arm-pump jib needs to rotate 180 degree, the rotational support structure that tradition adopts in technique known is the driven quadric chain of at least 5 hinges, is different from 3 general hinge rotation drive structures.Its main design starting point of the driven quadric chain of this 5 hinges is the driving moment that guarantees that the concrete arm-pump jib is opened, and guarantees when full load that especially lifting of jib has enough driving moments.But its moment was often big inadequately when the driven quadric chain of 5 hinges tightened up fully at jib, slide bar when causing jib to begin the carry arm frame.Though this slide bar can not cause too much influence to use, can cause the jib vibration, unfavorable to car body.

Summary of the invention

The utility model has overcome the defective of above-mentioned existence, purpose is for realizing that the concrete arm-pump jib locks when the zero load, a kind of concrete arm-pump jib latch hook structure is provided, make and mix concrete arm-pump jib automatic locking in the jib inclination angle is spent less than 83, the concrete arm-pump jib latch hook of auto-unlocking in the jib inclination angle is spent greater than 83.

The utility model concrete arm-pump jib latch hook content Description:

The utility model concrete arm-pump jib latch hook, it is characterized in that: form by latch hook and the weight and limited post, lock and the turning cylinder that are attached thereto together, the latch hook of a band weight is installed in the side of concrete arm-pump jib, its rotation is provided with limited post in one direction, on the concrete arm-pump jib that is locked lock is set.

The latch hook face of weight and turning cylinder line and latch hook is 107 degree angles, is 17 degree angles with concrete arm-pump jib axis.

The benefit of the utility model concrete arm-pump jib latch hook is on the basis of satisfying the work of concrete arm-pump jib, can realize opening automatically and locking of jib, its reasonable in design, simple in structure, dependable performance.

Description of drawings

Fig. 1 is that concrete arm-pump jib latch hook is opened preceding view

Fig. 2 is that concrete arm-pump jib latch hook is opened preceding view

Fig. 3 is that concrete arm-pump jib latch hook is in the critical condition schematic diagram

Fig. 4 is a concrete arm-pump jib latch hook locking state schematic diagram

Among Fig. 1: the 1st, weight, the 2nd, limited post, the 3rd, turning cylinder, the 4th, lock, the 5th, latch hook, the 6th, concrete pump jib.

The specific embodiment

The utility model concrete arm-pump jib latch hook structure is achieved in that below in conjunction with accompanying drawing and is described further.See Fig. 1-Fig. 4, the utility model concrete arm-pump jib latch hook, form by latch hook 5 and the weight 1 and limited post 2, lock 4 and the turning cylinder 3 that are attached thereto together, the latch hook 5 of a band weight is installed in the side of concrete arm-pump jib 6, its rotation is provided with limited post 2 in one direction, on the concrete arm-pump jib 6 that is locked lock 4 is set.The latch hook face of weight 1 and turning cylinder 3 lines and latch hook 5 is 107 degree angles, is 17 degree angles with concrete arm-pump jib 6 axis.

Jib locking occur in the jib inclination angle less than 83 degree after, mix the concrete arm-pump jib the jib inclination angle less than 83 degree in by gravity lever automatic locking, lean on gravity lever auto-unlocking at the jib inclination angle in greater than 83 degree.Surpass 83 when spending when the concrete arm-pump arm lifts the inclination angle, latch hook has the trend of opening under the effect of weight, but can not open under the effect of latch hook and lock frictional force, substantially spend near 90 up to the jib inclination angle, after the gravity overcome friction, latch hook is just beaten, its process with open similar.

Claims

1, a kind of concrete arm-pump jib latch hook, it is characterized in that: form by latch hook (5) and the weight (1) and limited post (2), lock (4) and the turning cylinder (3) that are attached thereto together, the latch hook (5) of a band weight is installed in the side of concrete arm-pump jib (6), its rotation is provided with limited post (2) in one direction, on the concrete arm-pump jib (6) that is locked lock (4) is set.

2, concrete arm-pump jib latch hook according to claim 1 is characterized in that: the latch hook face of weight (1) and turning cylinder (3) line and latch hook (5) is 107 degree angles, is 17 degree angles with concrete arm-pump jib (6) axis.