CN215639747U

CN215639747U - Intelligent calibration system for belt weigher

Info

Publication number: CN215639747U
Application number: CN202121394285.3U
Authority: CN
Inventors: 郭猛; 唐禹; 李长春; 高明; 傅彬; 吴慧玲; 杭云; 庄义飞
Original assignee: Ma'anshan Dangtu Power Generation Co ltd
Current assignee: Ma'anshan Dangtu Power Generation Co ltd
Priority date: 2021-06-22
Filing date: 2021-06-22
Publication date: 2022-01-25
Anticipated expiration: 2031-06-22

Abstract

The utility model discloses an intelligent belt scale checking system, and belongs to the technical field of belt scale checking. The belt scale comprises a calibration device arranged on a belt scale rack, wherein the calibration device comprises support frames symmetrically arranged on two outer sides of the width direction of the belt scale rack, a weighing unit is arranged between the support frames on the two sides, and a weighing sensor is arranged on the weighing unit; mounting grooves are formed in the two ends of the two side supporting frames in the length direction, the mounting grooves are used for placing a check weight rod, and the two ends of the check weight rod are correspondingly clamped into the mounting grooves in the same side of the two side supporting frames respectively; the bottom of the support frame is connected with the automatic lifting unit, and a bearing piece for supporting the check weight rod is arranged at a position, corresponding to the check weight rod, on the conveyor frame of the belt conveyor. Aiming at the defects in the prior art, the utility model provides the intelligent belt scale checking system, which does not need to be stopped for checking, and can effectively improve the checking precision of the electronic belt scale and reduce the labor cost.

Description

Intelligent calibration system for belt weigher

Technical Field

The utility model relates to the technical field of belt scale verification, in particular to an intelligent belt scale verification system.

Background

The metering of the electronic belt scale is measured by replacing the distributed flow with the linear distribution density, and the calculation formula of the instantaneous flow of the belt is as follows: q (t) ═ q (t) × (t) (kg/h). Where q is the weight per unit length of the scale section, v is the belt travel speed, and the instantaneous flow rate is the product of speed and weight, so the accuracy of the belt scale is determined by speed and accuracy. The existing tension structure of the electronic belt scale cannot well keep the belt tension constant, and the weighing is insensitive easily. In addition, a belt deviation rectifying system is lacked, when the belt deviation rectifying is carried out, the tension of the belt can be changed, and the weighing precision can be directly reduced due to the change of the tension.

Because the electronic belt scale has random errors, the calibration counterweight device with standard weight repeatedly passes through the electronic belt scale to perform random calibration, and error correction is performed. The calibration method that normally uses at present is that the standard weight chain code Ws who will prepare in advance passes through the region of weighing of electronic belt scale, obtains and shows weight W1, then compare the correction error with the data that the instrument obtained, this kind of check-up mode must be shut down and just can go on, require the staff to go to the scene after invoicing and observe just can accomplish simultaneously, not only the waste time, and complex operation is dangerous again, chain code live time has long scattered easily simultaneously, need the special messenger to go to maintain, increase the check-up cost. Therefore, it is urgently needed to design an intelligent belt scale calibration system which does not need to be stopped and can effectively improve calibration speed and accuracy.

Through retrieval, a large number of patents have been disclosed about the intelligent calibration system of the belt weigher, such as the Chinese patent application number: 2020107789964, the name of invention creation is: the application discloses a calibration device and a control system of an electronic belt scale, wherein the calibration device comprises a fixed frame arranged on a frame beam of the electronic belt scale and an electric push rod connected to the top in the fixed frame; the electric push rod is connected with the lifting rod through a flexible connecting piece, and the calibration device further comprises a weight bearing platform which is arranged on a weighing sensor of the electronic belt scale; the tail end of the lifting rod is provided with a connecting ball, and the connecting ball is connected with the weights in a floating manner. In the practical application in-process, hang the sign indicating number check-up when needs, descend through electric putter, transport the weight on the weight cushion cap, and the lifter continues to descend one end distance, makes to state and connect ball and weight and be in contactless state, and the flexonics spare between electric putter and the lifter can not be applyed extra pressure or lifting force on guaranteeing the weight, when need not hang the sign indicating number, promotes the weight through electric putter to make the weight break away from the weight cushion cap.

Also as in chinese patent application No.: 2012105316660, the name of invention creation is: the utility model provides a calibration equipment of belt weigher, this application discloses a calibration equipment of belt weigher, relates to belt weigher technical field. The automatic weighing device comprises two weighing hoppers, weighing sensors and supports, wherein the two weighing hoppers are arranged in the front and back direction along the conveying direction of a conveying belt and are fixed on the supports on two sides of an electronic belt scale; and the front side and the rear side of each weighing hopper are respectively provided with a weighing sensor. The device adopts a structure that two weighing hoppers are directly arranged above the belt, the two weighing hoppers work alternately by alternately discharging and feeding, intermittent feeding is converted into a continuous feeding mode, and the checking requirement of the electronic belt scale is met

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved by the utility model

Aiming at the defects in the prior art, the utility model provides the intelligent belt scale checking system, which not only does not need to be stopped for checking, but also can effectively improve the checking precision of the electronic belt scale and reduce the labor cost of field maintenance.

2. Technical scheme

In order to achieve the purpose, the technical scheme provided by the utility model is as follows:

the utility model discloses an intelligent belt scale checking system which comprises a checking device arranged on a belt scale rack, wherein the checking device comprises two support frames symmetrically arranged on two outer sides of the width direction of the belt scale rack, a weighing unit is arranged between the two support frames, and a weighing sensor is arranged on the weighing unit; mounting grooves are formed in the two ends of the two side supporting frames in the length direction, the mounting grooves are used for placing a check weight rod, and the two ends of the check weight rod are correspondingly clamped into the mounting grooves in the same side of the two side supporting frames respectively; the bottom of the support frame is connected with the automatic lifting unit, the support frame is driven by the automatic lifting unit to move up and down, and a bearing piece used for supporting the check weight rod is arranged at a position, corresponding to the check weight rod, on the conveyor frame of the belt conveyor.

As a further improvement of the utility model, the weighing unit is internally provided with a mounting beam, two ends of the mounting beam are respectively connected with the supporting frames at two sides, and the mounting beam is provided with a weighing sensor.

As a further improvement of the utility model, the automatic lifting unit comprises an electric push rod connected with the support frame, the electric push rod extends along the vertical direction, one side of the electric push rod is connected with a motor, the electric push rod and the motor are both arranged on a base, and the base is fixed on the outer side of the frame of the belt scale.

As a further improvement of the utility model, the automatic lifting unit also comprises guide rails arranged at two sides of the electric push rod, a sliding groove is arranged at the position on the base corresponding to the guide rails, one end of the guide rail is connected with the support frame, and the other end of the guide rail is embedded into the sliding groove.

As a further improvement of the utility model, the electric push rod comprises a fixed rod fixed on the base, a telescopic rod is arranged at the top of the fixed rod, and the top of the telescopic rod is connected with the support frame through a connecting piece.

As a further improvement of the utility model, the fixing rod is fixed on the base through a supporting ring, and the supporting ring is in a semi-circular structure.

As a further improvement of the utility model, the conveyor frames at two sides in the width direction are provided with supporting pieces at positions corresponding to the check weight rods, and the supporting pieces are provided with supporting grooves matched with the check weight rods.

As a further improvement of the utility model, the belt scale further comprises a speed measuring roller arranged on the frame of the belt scale, and the speed measuring roller is provided with a speed measuring sensor.

3. Advantageous effects

Compared with the prior art, the technical scheme provided by the utility model has the following beneficial effects:

(1) according to the belt scale intelligent calibration system, the weighing unit is arranged between the two calibration weight rods, after the calibration weight rods are placed in the mounting groove, the weight of the calibration weight rods can be pressed on the support frames on the two sides, the support frames on the front side and the rear side are connected through the mounting cross beam, the weight of the calibration weight rods can be synchronously transmitted to the mounting cross beam, and at the moment, the weighing sensor on the mounting cross beam can sense the weight of the calibration weight rods and transmit signals to the controller. The check weight rod and the weighing sensor are not directly and hard connected, so that the lateral stress of the weighing sensor is avoided. The weighing sensor is only subjected to vertical force, and is not subjected to tangential force generated when the belt runs, so that the weighing precision is improved, and the accuracy of a subsequent checking result is further ensured.

(2) According to the belt scale intelligent calibration system, the bearing groove matched with the calibration weight rod is formed in the bearing piece, the structure of the bearing groove is consistent with that of the mounting groove in the support frame, the calibration weight rod can be well supported and supported, the calibration weight rod is prevented from rolling off, and the stability in the calibration process is guaranteed.

(3) According to the belt scale intelligent checking system, when checking is carried out, the bottom positions of the supporting frame and the weighing unit are higher than the top position of the supporting part, after the checking weight rod is placed on the supporting frame, the automatic lifting unit is started to move downwards until the bottom of the checking weight rod is supported on the supporting part, so that the numerical value on the belt scale instrument is checked, if the deviation exists between the numerical value and the actual numerical value, the belt scale instrument can be checked to be recovered to be normal, the normal transportation of subsequent materials can be effectively guaranteed, the overload or insufficient load condition is avoided, the service life of a conveyor is effectively prolonged, and the production efficiency can be effectively improved.

(4) According to the belt scale intelligent calibration system, the calibration weight rod falls down through the electric push rod in an automatic lifting mode in a belt no-load state, the balance weight of the belt conveyor is adjusted, and automatic calibration operation is completed, so that the belt scale has high sensitivity, is convenient to operate and simple in structure, does not need to be stopped for calibration, and can effectively improve the calibration precision of the belt scale and reduce the labor cost of field maintenance.

Drawings

FIG. 1 is a schematic diagram of a front view structure of an intelligent calibration system of a belt scale according to the present invention;

FIG. 2 is an enlarged schematic view of the calibration device of FIG. 1;

fig. 3 is a schematic top view of an intelligent calibration system of a belt scale according to the present invention.

The reference numerals in the schematic drawings illustrate:

100. a conveyor frame; 110. a support member; 200. a calibration device; 210. a support frame; 220. checking a weight rod; 230. an automatic lifting unit; 231. a connecting member; 232. a guide rail; 233. a base; 234. a support ring; 235. an electric push rod; 236. a motor; 240. a weighing unit; 241. a cross beam; 300. a belt scale frame; 400. speed measuring roller.

Detailed Description

For a further understanding of the utility model, reference should be made to the following detailed description taken in conjunction with the accompanying drawings.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The present invention will be further described with reference to the following examples.

Example 1

With reference to fig. 1 to fig. 3, the belt scale intelligent verification system of the present embodiment includes a verification device 200 disposed on a belt scale rack 300, the verification device 200 includes two support frames 210 symmetrically disposed on two outer sides of the belt scale rack 300 in the width direction, a weighing unit 240 is disposed between the two support frames 210, and a weighing sensor is disposed on the weighing unit 240. Specifically, as shown in fig. 1, in this embodiment, the checking device 200 includes support frames 210 symmetrically disposed outside the front and rear sides of the belt scale frame 300, a weighing unit 240 is disposed between the support frames 210 on the front and rear sides, an installation beam 241 is disposed inside the weighing unit 240, two ends of the installation beam 241 are respectively connected to the support frames 210 on the front and rear sides, that is, the support frames 210 on the front and rear sides are connected to the weighing unit 240 through the installation beam 241, and a weighing sensor is mounted on the installation beam 241, and when the weighing unit 240 is pressed down by gravity, the weighing sensor senses the weight of the material on the weighing unit 240 or the weight of the check weight bar 220, so as to send a signal to the controller.

As shown in fig. 1 and fig. 3, mounting grooves have been all seted up at the length direction both ends of both sides support frame 210 in this embodiment, be used for placing check weight stick 220 in the mounting groove, wherein the both ends of check weight stick 220 correspond respectively to go into the card go into the same one side mounting groove of both sides support frame 210, specifically, the mounting groove has all been seted up at both ends about support frame 210 in this embodiment, and the both ends of two check weight sticks 220 correspond respectively to go into the mounting groove of the left end or the right-hand member of both sides support frame 210 around, check weight stick 220 sets up with support frame 210 is perpendicular this moment. Wherein be provided with weighing unit 240 between two check weight sticks 220, check weight stick 220 places back in the mounting groove, and the weight of check weight stick 220 can be pressed on both sides support frame 210, again because both sides support frame 210 links to each other through installation crossbeam 241 around, can transmit the weight of check weight stick 220 for installation crossbeam 241 in step, and the weighing sensor on this moment installation crossbeam 241 can the weight of perception check weight stick 220 to with signal transmission to controller. There is no direct hard connection between the check weight bar 220 and the weighing sensor, avoiding lateral stress of the weighing sensor. The weighing sensor is only subjected to vertical force, and is not subjected to tangential force generated when the belt runs, so that the weighing precision is improved, and the accuracy of a subsequent checking result is further ensured.

As shown in fig. 2, in this embodiment, the bottom of the supporting frame 210 is connected to the automatic lifting unit 230, and the supporting frame 210 is driven by the automatic lifting unit 230 to move up and down, and the positions on the conveyor frame 100 of the belt conveyor corresponding to the check weight rods 220 are provided with the supporting members 110 for supporting the check weight rods 220, specifically, in this embodiment, the positions on the conveyor frame 100 on both sides in the width direction (i.e., the front and rear sides) corresponding to the check weight rods 220 are provided with the supporting members 110, the supporting members 110 are provided with supporting grooves matched with the check weight rods 220, the structures of the supporting grooves are consistent with the structures of the mounting grooves on the supporting frame 210, and both can support the check weight rods 220 well, thereby preventing the check weight rods 220 from rolling off and ensuring the stability of the checking process. When checking, the bottom positions of the supporting frame 210 and the weighing unit 240 are all higher than the top position of the supporting part 110, after the checking weight rod 220 is placed, the automatic lifting unit 230 is started to move downwards until the bottom of the checking weight rod 220 is supported on the supporting part 110, so as to check the numerical value on the belt scale instrument, if the deviation exists between the numerical value and the actual numerical value, the belt scale instrument can be checked, the belt scale instrument is recovered to be normal, the normal transportation of subsequent materials can be effectively guaranteed, the overload or insufficient carrying capacity condition is avoided, the service life of the conveyor is effectively prolonged, and the production efficiency can be effectively improved.

In this embodiment, the automatic lifting unit 230 includes an electric push rod 235 connected to the supporting frame 210, the electric push rod 235 extends along a vertical direction, a motor 236 is connected to one side of the electric push rod 235, the electric push rod 235 and the motor 236 are both installed on a base 233, and the base 233 is fixed to the outer side of the belt scale frame 300. Electric putter 235 carries out up-and-down motion under motor 236's drive, and then the support frame 210 and the whole up-and-down motion of weighing unit 240 of both sides around the drive, can lift support frame 210 and weighing unit 240 wholly off conveyer frame 100 or compress tightly downwards on conveyer frame 100, the mode that adopts automatic rising makes check weight stick 220 under the unloaded state of belt, fall through electric putter 235, adjust the counter weight of belt feeder, accomplish the operation of automatic check-up, make belt scale possess high sensitivity, and convenient operation, moreover, the steam generator is simple in structure, not only need not shut down the check-up, can also effectively promote the check-up precision of belt scale and reduce the human cost of on-the-spot maintenance.

In this embodiment, the automatic lifting unit 230 further includes guide rails 232 disposed at two sides of the electric push rod 235, a sliding groove is disposed on the base 233 corresponding to the guide rails 232, one end of the guide rail 232 is connected to the support frame 210, and the other end of the guide rail 232 is embedded into the sliding groove. When electric putter 235 up-and-down motion, drive guide rail 232 and reciprocate along the spout, be convenient for carry out vertical direction to support frame 210 and electric putter 235's overall movement, can also further guarantee to support the powerful of support frame 210, improved the stability of automatic rising unit 230 motion.

As shown in fig. 2, the electric push rod 235 in this embodiment includes a fixed rod fixed on the base 233, and a telescopic rod is disposed on the top of the fixed rod, and the top of the telescopic rod is connected to the supporting frame 210 through a connecting member 231. The fixing rod is fixed on the base 233 through the support ring 234, the support ring 234 is of a semicircular annular structure, two ends of the support ring 234 are fixed on the base 233 through bolts, the fixing rod is further supported and fixed, and the mounting stability of the electric push rod 235 is guaranteed.

The embodiment further comprises a speed measuring roller 400 arranged on the belt scale frame 300, wherein a speed measuring sensor is arranged on the speed measuring roller 400, and the speed measuring sensor can effectively detect the running speed of the belt conveyor and transmit a running speed signal of the belt conveyor to the controller.

The working principle of the verification system of the embodiment is as follows: the calibration device 200 is made to fall down through the electric push rod 235 in an automatic lifting mode under the belt no-load state, the balance weight of the weighing unit 240 is adjusted, the weighing unit 240 is pressed on the electronic belt scale, the weighing sensor converts the unit weight of the weighing unit 240 into digital quantity, the speed measuring sensor transmits the running belt speed value to the controller, and the controller internally calculates the signals transmitted by the weighing sensor and the speed measuring sensor and outputs the total accumulated quantity, the speed signal, the instantaneous flow signal and the like. The belt scale instrument is compared with the value of the counterweight through accumulated calibration, error elimination and correction are carried out, and the automatic lifting unit 230 calibration device 200 is lifted up after correction is finished for the next use. The checking system has good monitoring and using effects, reduces operation and maintenance manpower, ensures long-term stable operation of a system of the coal conveying electronic belt scale, is simple and easy to install, convenient to maintain, convenient to carry out related interlocking tests, and high in equipment reliability.

The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the utility model, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the utility model.

Claims

1. The utility model provides a belt weigher intelligence check-up system which characterized in that: the belt scale comprises a checking device (200) arranged on a belt scale rack (300), wherein the checking device (200) comprises support frames (210) symmetrically arranged on two outer sides of the belt scale rack (300) in the width direction, a weighing unit (240) is arranged between the support frames (210) on the two sides, and a weighing sensor is arranged on the weighing unit (240); mounting grooves are formed in the two ends of the support frames (210) on the two sides in the length direction, the mounting grooves are used for placing a check weight rod (220), and the two ends of the check weight rod (220) are correspondingly clamped into the mounting grooves in the same side of the support frames (210) on the two sides respectively; the bottom of the support frame (210) is connected with the automatic lifting unit (230), the automatic lifting unit (230) drives the support frame (210) to move up and down, and a bearing piece (110) used for supporting the check weight rod (220) is arranged on the conveyor frame (100) of the belt conveyor and corresponds to the check weight rod (220).

2. The intelligent belt scale verification system of claim 1, wherein: the weighing unit (240) is internally provided with an installation beam (241), two ends of the installation beam (241) are respectively connected with the support frames (210) on two sides, and a weighing sensor is installed on the installation beam (241).

3. The intelligent belt scale verification system of claim 2, wherein: the automatic lifting unit (230) comprises an electric push rod (235) connected with the support frame (210), the electric push rod (235) extends in the vertical direction, one side of the electric push rod (235) is connected with a motor (236), the electric push rod (235) and the motor (236) are both installed on a base (233), and the base (233) is fixed on the outer side of the belt scale rack (300).

4. The intelligent belt scale verification system of claim 3, wherein: the automatic lifting unit (230) further comprises guide rails (232) arranged on two sides of the electric push rod (235), a sliding groove is formed in the position, corresponding to the guide rails (232), on the base (233), one end of each guide rail (232) is connected with the supporting frame (210), and the other end of each guide rail (232) is embedded into the sliding groove.

5. The intelligent belt scale verification system of claim 4, wherein: the electric push rod (235) comprises a fixed rod fixed on the base (233), a telescopic rod is arranged at the top of the fixed rod, and the top of the telescopic rod is connected with the support frame (210) through a connecting piece (231).

6. The intelligent belt scale verification system of claim 5, wherein: the fixing rod is fixed on the base (233) through a support ring (234), and the support ring (234) is of a semicircular annular structure.

7. The intelligent belt scale verification system of claim 1, wherein: the conveyor frames (100) on two sides in the width direction are provided with bearing pieces (110) at positions corresponding to the check weight rods (220), and the bearing pieces (110) are provided with bearing grooves matched with the check weight rods (220).

8. The intelligent belt scale verification system according to any one of claims 1-7, wherein: the belt weigher is characterized by further comprising a speed measuring roller (400) arranged on the belt weigher rack (300), and a speed measuring sensor is arranged on the speed measuring roller (400).