CN212963589U

CN212963589U - Redundant electronic belt conveyor scale of three fulcrum list scales

Info

Publication number: CN212963589U
Application number: CN202022383700.7U
Authority: CN
Inventors: 王庆河; 王祝辉
Original assignee: Individual
Current assignee: Jinan Weierxin Measurement And Control Engineering Co ltd; Wang Zhuhui
Priority date: 2020-10-23
Filing date: 2020-10-23
Publication date: 2021-04-13
Anticipated expiration: 2030-10-23

Abstract

The utility model provides a redundant electronic belt scale of three-fulcrum single scale, including the belt frame, the activity sets up the bearing frame on the belt frame, and belt frame both ends are equipped with first fixed cross beam, second fixed cross beam respectively, both ends are provided with weighing sensor C, weighing sensor B on the first fixed cross beam, and second fixed cross beam center is provided with weighing sensor A, and weighing sensor A, weighing sensor B, weighing sensor C all are connected with the activity bearing frame through the connecting plate; the movable bearing frame is also provided with a speed sensor, final data can be obtained through calculation of the controller, the measurement precision is high, the stress is uniform and stable, the unbalance loading resistance is high, and the measuring range is longer.

Description

Redundant electronic belt conveyor scale of three fulcrum list scales

Technical Field

The utility model relates to a weighing-appliance technical field, in particular to redundant electronic belt conveyor scale of three fulcrum list scales.

Background

The electronic belt scale is a common instrument device for dynamically weighing bulk materials, mainly comprises a movable bearing frame, a fixed beam, a weighing sensor, a speed sensor, a weighing controller and other devices, and has high accuracy and reliability which are key indexes for designing and manufacturing the electronic belt scale; in order to improve the accuracy of the electronic belt scale, methods such as optimizing the structure of the scale body, increasing the length of the measuring range, optimizing the metering algorithm and the like are generally adopted; in order to improve the reliability of the electronic belt scale, methods such as improving the stability of the scale body and adopting redundant metering of a plurality of parallel belt scales are generally adopted.

At present, the two modes of a direct bearing structure and a secondary sensor and auxiliary fulcrum bearing structure are mainly adopted, wherein the direct bearing structure can be divided into a and 1 weighing sensors, and a movable bearing frame in a single-roller group or double-roller group mode is generally adopted. Its disadvantages are poor anti-unbalance loading capability, short measuring range and poor metering accuracy. b. The weight of the movable bearing frame is completely borne by the left and right symmetrical 2 weighing sensors, and the movable bearing frame generally adopts a single carrier roller group or a double carrier roller group. Its disadvantages are poor anti-front-back unbalance loading capability, short measuring range and poor metering accuracy. c. 4 weighing sensor, by 4 weighing sensor complete bearing in four corners, generally adopt the activity bearing frame of multiunit bearing roller group type, its shortcoming is that 4 weighing sensor are difficult to guarantee to be in same horizontal plane, and the four corners adjustment is difficult, and the four corners is unbalanced, and the unbalance loading is big. The bearing structure of the retransmission sensor and the auxiliary pivot can be divided into: a. the movable load-bearing frame is characterized by comprising 1 weighing sensor, wherein the weight of the movable load-bearing frame is jointly borne by the 1 weighing sensor and an auxiliary fulcrum, the auxiliary fulcrum components comprise a knife edge cutter bearing, a joint bearing, a rubber bearing, a reed fulcrum and the like, and the movable load-bearing frame generally adopts a single-roller group or double-roller group form. The weighing sensor has the disadvantages that the stress of the weighing sensor is influenced by mechanical change to have fluctuation, the measuring range is short, and the measuring accuracy is poor; b. the weight of the movable bearing frame is jointly borne by the bilateral symmetry 2 weighing sensors and an auxiliary fulcrum, the auxiliary fulcrum components comprise knife edge knife bearings, knuckle bearings, rubber bearings, reed fulcrums and the like, and the movable bearing frame generally adopts a single-roller set or a multi-roller set form. The weighing sensor has the defects that the stress of the weighing sensor is influenced by mechanical change to have fluctuation, so that the metering accuracy is influenced.

At present, in order to improve the stability, a multi-fulcrum bearing structure is mainly adopted, namely a bearing structure of a plurality of weighing sensors is adopted, or a common bearing structure of the weighing sensors and auxiliary fulcrums is adopted. The disadvantages of the structural forms, including those in the preceding paragraphs, have been explained above. b. An auxiliary deviation prevention device is added, in order to ensure that the scale body does not swing under the influence of a transport belt in motion, the auxiliary fixing is generally carried out by adopting the forms of a joint bearing, a rubber bearing, a reed fulcrum and the like, and the swing of the scale platform in the horizontal direction is limited. The auxiliary deviation preventing device has the defects that the auxiliary deviation preventing device can generate additional vertical component force, the stress of the weighing sensor is influenced, and the metering accuracy is influenced. c. The redundant metering of the multiple belt scales is adopted, the method for improving the reliability of the redundant metering of the multiple belt scales in parallel is adopted, each belt scale can independently meter, and when one belt scale breaks down, other belt scales can also meter normally. Its advantages are high reliability, high cost, long straight belt segment, and high maintenance. .

SUMMERY OF THE UTILITY MODEL

For solving the technical problem, the utility model discloses a redundant electronic belt conveyor scale of three fulcrums list balance forms a plane through the three sensor that sets up for anti unbalance loading ability is strong, and it is little influenced by mechanical change, has improved the range distance of whole device simultaneously greatly, makes measurement accuracy higher, and because three sensor can only fixed form a plane, no longer need the symmetry retransmission sensor to adjust, just can guarantee not have relative difference in height between each sensor, and measuring result is more accurate.

A redundant electronic belt scale with three supporting points and a single scale comprises a belt frame, wherein a bearing frame is movably arranged on the belt frame, a first fixed cross beam and a second fixed cross beam are respectively arranged at two ends of the belt frame, a weighing sensor C and a weighing sensor B are respectively arranged at two ends of the first fixed cross beam, a weighing sensor A is arranged in the center of the second fixed cross beam, and the weighing sensor A, the weighing sensor B and the weighing sensor C are all connected with the movable bearing frame through connecting plates; a speed sensor is also arranged on the movable bearing frame; the movable bearing frame is provided with a carrier roller through a support, the weighing sensor A, the weighing sensor B and the weighing sensor C are electrically connected with a weighing controller, and the speed sensor is electrically connected with the weighing controller.

According to the technical scheme of the utility model, it is preferred, activity bearing frame specifically includes activity bearing frame longeron, activity bearing frame crossbeam, and activity bearing frame longeron quantity is 2, 2 activity bearing frame longeron parallel arrangement, connects activity bearing frame crossbeam perpendicularly between the activity bearing frame longeron, is equipped with speedtransmitter on the activity bearing frame crossbeam, activity bearing frame crossbeam is connected with weighing sensor A, weighing sensor B, weighing sensor C.

According to the technical scheme of the utility model, preferred, weighing controller is the singlechip, specifically is the M68300 series of Motorola company.

According to the technical scheme of the utility model, it is preferred, the weighing controller is PLC, and specific model is Siemens' S S7-1200.

According to the technical scheme of the utility model, it is preferred, weighing sensor C, weighing sensor B pass through fixed plate B with first fixed cross beam and are connected through fixed plate A between weighing sensor A and the second fixed cross beam.

The utility model has the advantages that:

1. the weighing sensor A, the weighing sensor B and the weighing sensor C form a plane, and the three sensors are positioned on the same plane, so that the three sensors are uniformly and stably stressed and have strong unbalance loading resistance;

2. meanwhile, the distance between the weighing sensor A and the weighing sensors B and C is longer, so that the measuring range is longer and the weighing is more accurate;

3. the height of the sensor of the existing device is difficult to accurately ensure to be on the same horizontal plane, and continuous adjustment and measurement are needed, so that the sensor can be ensured to be on the same plane by one-time installation, the measurement precision is high, the stability of a triangle is high, the influence of mechanical change on the result is small, and the measurement precision is higher;

4. adopt activity bearing frame atress, conduct the mode on the weighing sensor with power again, avoid the direct mode of exerting the atress of each position on the weighing sensor of current device, activity bearing frame makes the atress between each sensor more even, weighs more accurately.

Drawings

FIG. 1 is a perspective view of a three-pivot single-scale redundant electronic belt scale of the present invention;

FIG. 2 is a front view of the scale body structure of the present invention;

FIG. 3 is a top view of the scale body structure of the present invention;

FIG. 4 is a left side view of the scale body structure of the present invention;

FIG. 5 is an enlarged view of the connection structure of the weighing sensor of the present invention;

in the figure: 1-a first fixed cross beam, 2-a second fixed cross beam, 31-a movable load-bearing frame longitudinal beam, 32-a movable load-bearing frame cross beam, 4-a carrier roller, 41-a first carrier roller, 42-a second carrier roller, 43-a third carrier roller, 5-a weighing sensor, 51-a weighing sensor A, 52-a weighing sensor B, 53-a weighing sensor C, 6-a connecting plate, 71-a fixing plate A, 72-a fixing plate B, 8-a speed sensor, 9-a weighing controller, 10-a belt frame, 11 and a bracket.

Detailed Description

In order to make the technical solutions in the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments.

In the description of the present invention, the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "vertical", "horizontal", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of describing the present invention, but do not require the present invention to be constructed or operated in a specific orientation, and therefore, cannot be construed as limiting the present invention. The terms "connected" and "connected" in the present invention should be understood in a broad sense, for example, they may be welded or detachably connected; the terms may be directly connected or indirectly connected through intermediate components, and specific meanings of the terms may be understood as specific conditions by those skilled in the art.

Example 1:

as shown in fig. 1-5, a redundant electronic belt scale with three supporting points and a single scale comprises a belt frame 10, wherein a bearing frame is movably arranged on the belt frame 10, the movable bearing frame is connected with the belt frame 10 through a weighing sensor 5, the movable bearing frame specifically comprises movable bearing frame longitudinal beams 31 and movable bearing frame cross beams 32, the number of the movable bearing frame longitudinal beams 31 is 2, the 2 movable bearing frame longitudinal beams 31 are arranged in parallel, a plurality of movable bearing frame cross beams 32 are vertically connected between the movable bearing frame longitudinal beams 31, and speed sensors 8 are arranged on the movable bearing frame cross beams 32; the speed sensor 8 is used for detecting the conveying speed, a first fixed cross beam 1 and a second fixed cross beam 2 are respectively arranged at two ends of the belt frame 10, a weighing sensor C53 and a weighing sensor B52 are respectively arranged at two ends of the first fixed cross beam 1, a weighing sensor A51 is arranged at the center of the second fixed cross beam 2, and the weighing sensors A51, B52 and C53 are connected with the movable bearing frame cross beam 32 through the weight measuring ends of the connecting plate 6; weighing sensor A51, weighing sensor B52, weighing sensor C53 constitutes a plane, so the atress of three sensor is even stable, anti unbalance loading ability is strong, simultaneously weighing sensor A51 and weighing sensor B52, weighing sensor C53's distance is far away, for the mode of 2 sensors at present, the range is longer, it is more accurate to measure, for the condition of 4 sensors, 4 sensors highly be difficult to the assurance of accuracy at same horizontal plane, need continuous regulation and measurement, this application disposable installation just can guarantee that the sensor is located the coplanar, measurement accuracy is high, triangle-shaped stability is high, mechanical change influences for its result for a short time, measurement accuracy is higher.

The movable bearing frame cross beam 32 is provided with a carrier roller 4 through a support 11, the carrier roller 4 is a groove-shaped carrier roller, the groove-shaped carrier roller comprises a first carrier roller 41, a second carrier roller 42 and a third carrier roller 43 which are sequentially arranged, the lengths of the first carrier roller 41, the second carrier roller 42 and the third carrier roller 43 are consistent, the second carrier roller 42 is horizontally arranged, the first carrier roller 41 and the third carrier roller 43 are symmetrically arranged by taking the second carrier roller 42 as a center, the first carrier roller 41 and the third carrier roller 43 form an obtuse angle with the second carrier roller 42, the first carrier roller 41, the second carrier roller 42 and the third carrier roller 42 are connected with the support 11 through bearings, the support 11 is arranged on the movable bearing frame cross beam 32, a conveyor belt is sleeved on the outer surface of the carrier roller, the two ends of the conveyor. The load cell A51, the load cell B52 and the load cell C53 are electrically connected with the load controller 9, the speed sensor 8 is electrically connected with the load controller 9: the weighing controller 9 is a PLC, which is S7-1200 by siemens.

The working process is as follows: during operation, the material begins the transportation through the conveyer belt, in the transportation, weighing sensor A51, weighing sensor B52, weighing sensor C53 detect the weighing signal of respective position respectively, convey the signal to PLC, speed sensor 8 that is located on activity bearing frame crossbeam 32 simultaneously detects the speed of material transportation this moment, convey speed signal to PLC, calculate the instantaneous flow that obtains weighing sensor A51 through the combination of weight and speed, and the average instantaneous flow of weighing sensor B52, weighing sensor C53, average the instantaneous flow of three sensor, can obtain real-time material flow.

Example 2:

a three-pivot single-scale redundant electronic belt scale having a structure identical to that of embodiment 1, except that the weighing controller 9 is a single chip microcomputer of the type M68300 series available from Motorola, inc.

Example 3:

the utility model provides a redundant electronic belt conveyor scale of three fulcrums list balance, its structure is unanimous with embodiment 1, and the difference is, load cell C53, load cell B52 are connected through fixed plate B72 with first fixed beam 1, are connected through fixed plate A71 between load cell A51 and the second fixed beam 2, connect more firmly through the fixed plate.

In addition to the technical features described in the specification, the technology is known to those skilled in the art.

Claims

1. The utility model provides a redundant electronic belt conveyor scale of three fulcrums list balance, includes the belt frame, moves bearing frame, bearing roller, and the belt frame is gone up the activity and is set up bearing frame, is equipped with bearing roller, its characterized in that through the support on the activity bearing frame: a first fixed cross beam and a second fixed cross beam are respectively arranged at two ends of the belt frame, a weighing sensor C and a weighing sensor B are respectively arranged at two ends of the first fixed cross beam, a weighing sensor A is arranged at the center of the second fixed cross beam, and the weighing sensor A, the weighing sensor B and the weighing sensor C are all connected with the movable bearing frame; a speed sensor is also arranged on the movable bearing frame; the weighing sensor A, the weighing sensor B and the weighing sensor C are electrically connected with the weighing controller, and the speed sensor is electrically connected with the weighing controller.

2. The redundant electronic belt scale of three-fulcrum single scale of claim 1, characterized in that: the movable bearing frame comprises 2 movable bearing frame longitudinal beams and 2 movable bearing frame cross beams, the movable bearing frame longitudinal beams are arranged in parallel, the movable bearing frame cross beams are vertically connected among the movable bearing frame longitudinal beams, and the movable bearing frame cross beams are connected with a weighing sensor A, a weighing sensor B and a weighing sensor C.

3. The redundant electronic belt scale of three-fulcrum single scale of claim 2, characterized in that: and a speed sensor is arranged on the movable bearing frame beam.

4. The redundant electronic belt scale of three-fulcrum single scale of claim 2, characterized in that: the movable bearing frame beam is connected with the weighing sensor A, the weighing sensor B and the weighing sensor C through connecting plates.

5. The redundant electronic belt scale of three-fulcrum single scale of claim 1, characterized in that: the weighing controller is a single chip microcomputer.

6. The redundant electronic belt scale of three-fulcrum single scale of claim 1, characterized in that: the weighing controller is a PLC.

7. The redundant electronic belt scale of three-fulcrum single scale of claim 1, characterized in that: and the weighing sensor C and the weighing sensor B are connected with the first fixed cross beam through the fixed plate B.

8. The redundant electronic belt scale of three-fulcrum single scale of claim 1, characterized in that: the weighing sensor A is connected with the second fixed cross beam through a fixed plate A.