CN2084926U

CN2084926U - Automatic weighing device of loader

Info

Publication number: CN2084926U
Application number: CN 91212526
Authority: CN
Inventors: 肖庆麟; 杨鑫平
Original assignee: CHANGSHA BUILDING MACH
Current assignee: CHANGSHA BUILDING MACH
Priority date: 1991-04-16
Filing date: 1991-04-16
Publication date: 1991-09-18

Abstract

An automatic weighing device of a loader relates to a loader, which is suitable for the loader and other types of loaders. The utility model is a parallel four-bar linkage mechanism formed by hinging a bracket, an upper connecting bar, a movable arm and a frame; the sensor, the movable arm, the lower connecting rod and the frame are hinged to form another parallel four-bar linkage mechanism, and the movable arm oil cylinder passes through a loader working device connected with the movable arm through the latter parallel four-bar linkage mechanism, so that the loader can load (unload) materials and can accurately measure the materials. The utility model has the advantages of simple structure, easy manufacture, convenient use, accurate measurement, good reliability and the like.

Description

Auto-weigh apparatus for loader

A kind of poidometer of loader relates to a kind of loader, mainly is that the connecting rod mechanism of loader has been done improvement, and gauging device has been installed, and is applicable to the loading facility of loader and other patterns.

The poidometer of existing loader is to adopt the automatic weighing of hydraulic pressure, utilize hydraulic oil as sensor information, oil pressure indicator is as display instrument, though the poidometer of this loader is weighing automatically also, but the swing arm of loader must be lifted to the weighing of a certain ad-hoc location ability, and the material center-of-gravity position in the loader hopper is very big to weighing precision influence, so inefficiency, weighing precision are poor.

The connecting rod mechanism that the purpose of this utility model provides a kind of loading arm is a parallel four-bar linkage, and the poidometer of a kind of loader of linking by another parallel four-bar linkage and swing arm of boom cylinder.

Characteristics of the present utility model are: carriage (3), boxed rod (4), swing arm (6), frame (10) are articulated in (C), (E), (F), (G) point, form a parallel four-bar linkage; Sensor (5), swing arm (6), lower link (7), frame (10) are articulated in (H), (Q), (M), (G) point, form another parallel four-bar linkage.

Accompanying drawing is a constructional drawing of the present utility model.

Existing accompanying drawings is as follows.

Carriage (3), boxed rod (4), swing arm (6), frame (10) are articulated in (C), (E), (F), (G) point, consist of a parallel four-bar linkage; Sensor (5), swing arm (6), lower link (7), frame (10) are articulated in (H), (Q), (M), (G) point, form another parallel four-bar linkage.Hopper (1) is articulated in (A) point with carriage (3); Dump ram (2) is articulated in (B), (D) point with hopper (1), carriage (3).Sensor (5) is articulated in (Q) point with lower link (7), boom cylinder (8).Boom cylinder (8) is articulated in (N) point with frame (10).Sensor (5) connects with digital display (9) by lead (12), digital display (9) is fixedly connected with instrument desk (11), instrument desk (11) is fixedly connected with frame (10), and the data that sensor (5) records are shown by digital display (9).Hinge (G) is perpendicular to the ground with the line of (M), and hinge (H) is positioned on the line of two hinges (C), (G).

Now principle of work of the present utility model is described below:

When hopper (1) is equipped with material (weight is G) and has left ground, because carriage (3), boxed rod (4), swing arm (6) are parallel four-bar linkages with frame (10) composition, so the weight of material G in the hopper (1) is transformed into the power of hinge (C) point under the swing arm (6) moment that hinge on the swing arm (G) point is produced are had M=GL all the time ₁Cos α.L ₁Be the distance between the upper and lower hinge of swing arm (6) (G), (C).α is line and the ground-surface angle between the upper and lower hinge of swing arm (6) (G), (C).By M=GL ₁Cos α as can be seen, the material center-of-gravity position in this moment and the hopper (1) is irrelevant.While also is a parallel four-bar linkage owing to swing arm (6), lower link (7), sensor (5) with frame (10) composition again, and hinge (G) is perpendicular to the ground with the line of (M).Suppose that the suffered pressure of sensor (5) is F, so swing arm (6) has M '=FL at the suffered counter-force F of (H) point all the time to the balancing torque that (G) point produces ₂Cos α.L ₂Be the distance between (G), (H) two hinges.Because M=M ' then has F=L ₁G/L ₂=KG, K are constant, and promptly moved arm lifting is in any position, and the F value is always constant.Like this utility model not only can automatic charge, discharging, can accurately measure during at moved arm lifting simultaneously, and irrelevant with the material center-of-gravity position in the hopper in any position.

The utlity model has the advantages such as simple in structure, easy to manufacture, easy to use, accurate measurement, good reliability.

Claims

1, a kind of poidometer of loader mainly is made up of hopper [1], dump ram [2], frame [10], boom cylinder [8] etc., it is characterized in that:

A. carriage [3], boxed rod [4], swing arm [6], frame [10] are articulated in [C], [E], [F], [G] point, consist of a parallel four-bar linkage;

B. sensor [5], swing arm [6], lower link [7], frame [10] are articulated in [H], [Q], [M], [G] point, consist of another parallel four-bar linkage;

C. sensor [5] is articulated in [Q] point with lower link [7], boom cylinder [8];

D. boom cylinder [8] is articulated in [N] point with frame [10];

E. sensor [5] connects with digital display [9] by lead [12].

2, the poidometer of a kind of loader according to claim 1 is characterized in that: hinge (G) is perpendicular to the ground with the line of (M); Hinge (H) is positioned on the line of two hinges (C), (G).