CN2684171Y

CN2684171Y - Dynamic vehicle weighing table

Info

Publication number: CN2684171Y
Application number: CN 200420038575
Authority: CN
Inventors: 胡建明; 邓铁六; 栾兆群; 李广; 李承田
Original assignee: 胡建明
Priority date: 2004-02-17
Filing date: 2004-02-17
Publication date: 2005-03-09
Anticipated expiration: 2014-02-17

Abstract

The utility model discloses a dynamic vehicle weighing table, compising a weight measuring sensor, a weighing plate and a weighing frame. The dynamic vehicle weighing table is characterized in that the dynamic vehicle weighing table also comprises that the upper surface of the weight measuring sensor is a spherical surface, and is fixedly connected on four corners of a framework; the weighing frame is placed in the framework, the extending positions of the four corners of the weighing frame are fixedly connected to a screw pair; the lower end face of the screw pair is point-contacted with the upper spherical surface of the weight measuring sensor, and the contact position can be freely adjusted; the weighing frame is tightly drawn by draw rods which are arranged in the bilateral symmetry mode and floats up, and a corresponding gap is existed between the weighing frame and the framework; the weighing frame is tightly drawn by draw rods which are arranged in the bilateral symmetry mode and floats up, and a corresponding gap is arranged between the weighing frame and the framework; the draw rod device is composed of a sleeve barrel, a long bolt mounted in the sleeve barrel, and a flexible cover sheathed at the tail of the sleeve barrel, and the fixed connecting portion of the draw rod device and the weighing frame is adopted the crash pad. By adopting the weighing table structure, the sensor has homogeneous stress, high accuracy, good stability and repeatability and convenient mounting and debugging.

Description

The dynamic vehicle weighing platform

Technical field

The application belongs to a kind of weighing apparatus, is specially adapted to weighing of dynamic vehicle.

Background technology

The car weigher of current use mainly by a block length wide all with the nearly weighing unit that waits of vehicle, a load cell is placed at four angles respectively below the weighing unit, when vehicle during through weighing unit, shows the check weighing sum of four load cells on the instrument.Also have several heavy weighing apparatus, all be to adopt about one 3 meters * 1 meter weighing unit, place a load cell equally on four angles respectively, sensor relies on bolt to be fixed between support and the weighing plate, makes weighing unit and foundation frame form rigid structure by four sensors.When vehicle when the weighing unit, four sensors had both been born action of gravity vertically downward, also will bear because the effect of the horizontal force that friction force and acceleration and deceleration are produced, the sensor signal of passing to instrument like this is inaccurate, stability and repeatability are all poor; Sensor is placed on four angles below the weighing unit plane in addition, enter or leave weighing unit moment at wheel, two sensors that weighing unit is closely taken turns a little are stressed bigger, the stressed of wheel point far away may be pulling force, weighing unit is far taken turns a little the trend that upwards lifts, the sensor discontinuity, data acquisition is inaccurate; Moreover since between sensor and pedestal and the weighing unit for being rigidly connected, pedestal and weighing unit are welded structure all, and scale error is arranged, so bring problem such as adjustment Pingdu difficulty.

Summary of the invention

The application's purpose is the deficiency that overcomes above-mentioned car weigher, a kind of minimizing dynamic vehicle planar impact power is provided and avoids the mechanical shock influence, makes weighing accuracy height, good stability, good reproducibility and Installation and Debugging dynamic vehicle weighing platform easily.

For achieving the above object, the application's dynamic vehicle weighing platform is mainly by weighing plate, and four load cells, supporting screw pair, framework, the frame of weighing, some cover pull rod device are formed.Described load cell upper surface is a sphere, and be fixed on four angles of framework, lay the frame of weighing in the framework, the affixed weighing plate on the frame of weighing, the affixed screw pair of the four corners position that the frame of weighing stretches out, the lower surface of adjustable stud contacts with umbilical point on the sensor, and the pull rod device tension that the frame of weighing is placed with symmetria bilateralis is floated, and adjust to and framework between corresponding gap is arranged, pull rod device has beam with the frame connecting portion of weighing in addition.

Description of drawings

Fig. 1 is the planimetric map of weighing unit;

Fig. 2 is a weighing unit planimetric map A-A cross section view;

Fig. 3 is a weighing unit planimetric map B-B cross section view;

Fig. 4 is a weighing unit planimetric map C-C cross section view.

Among the figure: 1-load cell, 2,3-bolt, 4-framework, 5-tablet, 6-bolt, 7-are adjusted double-screw bolt, 8-set nut, 9-and are adjusted nut, 10-weighing plate, 11-screw, 12-weigh frame, 13-telescopic cover, 14-sleeve, 15-thru-bolt, 16-rubber mat plate, 17-pressing plate, 18-nut, 19-roadbed, 20-pipeline, 21-pull rod device, 22-tie rod hole.

Below in conjunction with accompanying drawing the application is further described:

By Fig. 1 and Fig. 2 as can be known, the application's dynamic vehicle weighing platform contains four load cells 1, and load cell 1 upper surface is a sphere, and is fixed in bolt 2 on four angles of framework 4; Lay the frame 12 of weighing in the framework 4, the screw pair that four angular positions of stretching out at the frame 12 of weighing are made up of adjustable stud 7 and adjustable nut 9 on affixed with bolts 3, again the whole frame 12 of weighing is placed in the framework 4, make that sphere contacts with adjustable stud 7 lower end millet cake on the sensor 1, with double-screw bolt 7 with four sensor leveling, and fixing by set nut 8, cover tablet 5, guarantee that 1 of sensor is subjected to vertical force and protective effect; In frame 12 both sides of weighing, whenever the symmetrical placement that keeps at a certain distance away pull rod device 21, frame 12 tensions of will weighing are floated, and adjust to and framework 4 between corresponding gap is arranged, then weighing plate 10 usefulness screws 11 are fixed on the frame 12 of weighing, and be fixed on the framework 4 with bolt 6, injecting sand-cement slurry and roadbed 19 formation one around the framework 4, pipeline 20 is used to install the cable of load cell 1.

Referring to Fig. 2 as can be known, pull rod device 21 comprises telescopic cover 13, sleeve 14, thru-bolt 15, and its structure is to load onto a thru-bolt 15 in sleeve 14, and afterbody can reciprocatingly slide thru-bolt 15 by telescopic cover 13 on the thread bush, is embedded in then under the roadbed 19.When frame is weighed in installation, earlier long threaded rod 15 is return telescopic cover 13, put steady on the frame 12 of weighing with after double-screw bolt 7 leveling, slowly pull out thru-bolt 15 with an iron wire the tie rod hole 22 from the frame 12 of weighing again, and be fixed on the frame 12 of weighing with pressing plate 17 and nut 18, in addition, pressing plate 17 and weigh and will add rubber blanket 16 between the frame 12 is used for damping shock absorption.

The application's beneficial effect

Four sensor upper surfaces be sphere be fixed in weighing support on the lower end millet cake of adjustable stud contact, and Between weighing support and the framework certain interval is arranged, eliminated the impact of planar impact power, make and weigh accurately, sensor is only held The axial force that load is transmitted by weighing support;

2. affixed screw pair on four angles of weighing support can be adjusted arbitrarily sphere-contact position on the lower surface of double-screw bolt and the sensor Put, keep four sensors stressed evenly, the irregular check weighing error of bringing of stress eliminating.

3. four sensors are placed on four angles outside the weighing unit, in the time of can making vehicle just sail weighing plate into, just can make four sensors all be subjected to the pressure at right angle effect simultaneously, weigh accurately because of lifting the pulling force of generation, making when avoiding vehicle to sail weighing unit into.

4. with the pull rod device of some cover symmetric arrangement the weighing unit tension is floated, when wheel entered weighing plate, the friction force of being brought, impulsive force were born by pull bar like this, can not influence the precision that sensor is weighed.

5. the connecting portion in weigh frame and pull rod device uses damping damping pad, reduces vehicular impact and mechanical wave, significantly improves the accuracy of dynamically weighing down.

Claims

1. dynamic vehicle weighing platform, comprise four load cells [1], weighing plate [10], the frame [12] of weighing, it is characterized in that: load cell [1] upper surface is a sphere, and be fixed on four angles of framework [4], lay the frame of weighing [12] in the framework [4], at the affixed screw pair [7 in four angular positions that the frame of weighing [12] stretches out, 9], the lower surface of adjustable stud [7] is gone up umbilical point with load cell [1] and is contacted, pull rod device [21] tension that the frame [12] of weighing is placed with symmetria bilateralis is floated, and adjust to and framework [4] between corresponding gap is arranged, the frame of weighing [12] and pull rod device [21] connecting portion have crash roll [16].

2. dynamic vehicle weighing platform according to claim 1, its feature also is: the structure of described pull rod device [21] is to adorn a thru-bolt [15] in sleeve [14], afterbody puts telescopic cover [13], when frame [12] is weighed in installation or removal, thru-bolt [15] can be reciprocatingly slided.