CN114873185B - Speed measuring device and method for belt conveyor - Google Patents
Speed measuring device and method for belt conveyor Download PDFInfo
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- CN114873185B CN114873185B CN202210548590.6A CN202210548590A CN114873185B CN 114873185 B CN114873185 B CN 114873185B CN 202210548590 A CN202210548590 A CN 202210548590A CN 114873185 B CN114873185 B CN 114873185B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
- B65G43/02—Control devices, e.g. for safety, warning or fault-correcting detecting dangerous physical condition of load carriers, e.g. for interrupting the drive in the event of overheating
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/02—Devices characterised by the use of mechanical means
- G01P3/24—Devices characterised by the use of mechanical means by using friction effects
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The utility model provides a speed sensor for belt conveyor, includes the casing, lifts mechanism and speed measuring mechanism, and the casing is inside to be equipped with guide post and electro-magnet, the electro-magnet install in the inside upper end of casing, lift mechanism is equipped with the permanent magnet under the electro-magnet effect, lift mechanism has all the time along guide post upward movement's dynamic potential energy, speed measuring mechanism is located the top of casing with lift mechanism can dismantle the connection lift mechanism lift under the effect of the force of lifting, speed measuring mechanism can laminate the lower surface of belt all the time and obtain the speed information of belt operation.
Description
Technical Field
The invention relates to a speed measuring device and a speed measuring method, in particular to a speed measuring device and a speed measuring method for a belt conveyor.
Background
At present, in large-scale production operations such as coal mining and mining, a belt conveyor plays an important role as a connecting and transporting device between various processes, and with the improvement of production capacity, a high-speed and heavy-duty belt conveyor is widely adopted. The modern production line is almost an automatic line with strong continuity, and has higher requirements on the stable operation of mechanical equipment, but the conditions of uneven blanking and the like inevitably exist in actual production, and the conditions often cause the belt to slip, so that the belt runs at a low speed or stops, and therefore, accumulated materials and scattered materials are caused, and the accumulated materials and the scattered materials need to be cleaned manually, thereby not only increasing the labor intensity of workers, but also affecting the production environment; moreover, although the belt is in low speed or stops running due to the slipping of the belt, the driving motor at the head of the belt conveyor still runs at a set speed, the long-time friction is easy to cause the tearing of the belt, the continuous production is seriously affected, and great economic loss is caused, so that the real-time and accurate measurement of the running speed of the belt becomes particularly important, the running state of the belt can be learned, and the economic loss is avoided.
Meanwhile, when the high-precision belt scale is used for measuring the material flow on the belt, the accuracy of a speed signal is an important measurement parameter, and the measurement accuracy of the belt scale is affected.
The speed measuring device for monitoring the speed of the belt conveyor mostly adopts a single-wheel or double-wheel speed measuring sensor. The double-wheel speed measuring sensor is pressed on the upper surface of the belt or reversely attached to the lower surface of the belt through the counterweight, so that the belt speed measurement can be carried out under the condition that the single-wheel or double-wheel speed measuring sensor flexibly operates. In the measuring process, the weight of the speed measuring wheel is balanced by the self gravity of the balancing weight in the speed measuring device, and if the running track of the belt conveyor has tremble or belt sticking, bulge and other conditions, stall errors are generated when the speed measuring double wheels are separated from the belt, so that the speed measuring wheel is separated from the surface of the belt, and speed measuring deviation is caused.
Disclosure of Invention
In order to ensure real-time and accurate measurement of the running speed of the belt under the conditions of belt slipping, jumping and the like, the invention provides a speed measuring device and a speed measuring method for a belt conveyor.
The technical scheme provided by the invention is as follows:
a speed measuring device for a belt conveyor, comprising:
the shell is provided with a containing cavity, and a guide post is arranged in the containing cavity;
the electromagnet is arranged at the upper end inside the shell;
the lifting mechanism is provided with a permanent magnet, and under the action of the electromagnet, the lifting mechanism always has kinetic potential energy moving upwards along the guide post; and
the speed measuring mechanism is located above the shell and detachably connected with the lifting mechanism, and can always be attached to the lower surface of the belt and acquire speed information of belt running under the action of lifting force of the lifting mechanism.
Further, the casing includes shell and top cap, the guide post both ends are fixed in respectively the shell bottom with the top cap, electro-magnet fixed mounting in on the top cap.
Further, the lifting mechanism further comprises a tray and a lifting rod, the permanent magnet is fixedly installed on the tray, one end of the lifting rod is installed on the tray, and the other end of the lifting rod penetrates through the shell and is detachably connected with the speed measuring mechanism.
Further, the support rod is provided with a replacement section which can increase the length thereof.
Further, an adjusting device is arranged at the position, close to the electromagnet, of the guide column, and the adjusting device can adjust the upper limit of the distance of the lifting mechanism moving upwards along the guide column.
Further, the lifting mechanism further comprises elastic buffer devices, wherein the elastic buffer devices are positioned at two ends of the stroke of the lifting mechanism.
Further, the lifting mechanism further comprises elastic buffer devices, wherein the elastic buffer devices are positioned at two ends of the stroke of the lifting mechanism.
Further, the roughness Ra of the outer wall of the guide post is less than or equal to 0.2.
Further, the speed measuring mechanism comprises a speed measuring sensor and speed measuring wheels, and the speed measuring wheels are arranged on two sides of the speed measuring sensor through wheel shafts.
The application method of the speed measuring device for the belt conveyor comprises the following steps of:
s1, setting the upper limit of the stroke of a lifting mechanism by using an adjusting device, measuring the distance H from the lower surface of a belt to a bracket base by using a measuring ruler, electrifying an electromagnet, measuring the distance H from the highest point of a speed measuring wheel to the bracket base, and rotating the adjusting device to ensure that H is larger than H, wherein the difference range is 5-10 cm;
s2, in the power-off state, the speed measuring device is fixedly arranged on the bracket base, at the moment, the tray naturally falls on the bottom of the speed measuring device, and an operator applies proper pressure to the speed measuring wheel downwards by using the flat plate;
s3, after the electromagnet is electrified, an adsorption force is generated on the permanent magnet, the lifting mechanism and the speed measuring mechanism overcome the self-gravity and partial elastic potential energy of the elastic buffer device and move upwards along the guide column, an operator properly controls the upward movement speed of the tray, and when the speed measuring wheel is close to the lower surface of the belt, the operator pulls away the flat plate, so that the speed measuring wheel is closely attached to the lower surface of the belt;
s4, installing a tachometer, setting the upper limit and the lower limit of a belt running speed alarm, starting a belt conveyor to perform production operation, and when the belt jumps, under the buffering and damping effects of an elastic buffering device, enabling a speed measuring wheel to always contact the bottom surface of the belt and not be damaged easily;
s5, the speed measuring device provides accurate speed pulse signals for the high-accuracy belt scale for realizing accurate measurement.
The invention has the following effects:
1. the magnetic attraction force generated by the electromagnet can promote the permanent magnet to keep a stressed state at any time, meanwhile, the guide column has excellent surface smoothness, so that the tray can move downwards or upwards smoothly along the guide column, the speed measuring device can sensitively and accurately cope with the jumping change of the belt, the speed measuring wheel is always kept to be closely attached to the lower surface of the belt, the occurrence of weightlessness and acceleration is eliminated, and the rapid reaction is free from slipping.
2. The adjusting device can change the upper limit value of the rising of the speed measuring wheel, so that the speed measuring device has universality, is suitable for belt conveyors of different types, and can avoid equipment failure or damage caused by the overload of the travel of the speed measuring device when the condition of extreme jump abnormality of the belt occurs.
3. The elastic buffer device arranged at the bottom end of the shell can play a remarkable role in buffering impact force generated by falling back of the tray when the speed measuring device is not in working state or the electromagnet is suddenly powered off; the elastic buffer device arranged above can effectively slow down the impact caused by frequent up-and-down movement of the tray in the speed measuring process, effectively protects the speed measuring device and prolongs the service life of the speed measuring device.
Drawings
FIG. 1 is a schematic overall cross-sectional view of the present invention;
FIG. 2 is a schematic rear view of the top cover of the present invention;
FIG. 3 is a schematic cross-sectional view of a housing of the present invention;
fig. 4 is a schematic view of the spring installation of the present invention.
In the figure: 1-shell, 101-threaded hole, 102-spring, 2-top cover, 201-threaded hole, 202-threading hole, 203-through hole, 204-positioning blind hole, 3-guide post, 4-permanent magnet, 5-tray, 6-riding rod, 7-silica gel post, 8-adjusting nut, 9-electromagnet, 10-speed sensor, 11-shaft, 12-speed wheel.
Detailed Description
Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
It should be noted that certain terms are used throughout the description and claims to refer to particular components. Those of skill in the art will understand that a person may refer to the same component by different names. The description and claims do not identify differences in terms of components, but rather differences in terms of the functionality of the components. As used throughout the specification and claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. The description hereinafter sets forth a preferred embodiment for practicing the invention, but is not intended to limit the scope of the invention, as the description proceeds with reference to the general principles of the description. The scope of the invention is defined by the appended claims.
As shown in fig. 1 to 3, a speed measuring device for a belt conveyor (hereinafter referred to as a speed measuring device) includes a housing, a guide post 3, a permanent magnet 4, a tray 5, a support rod 6, a silica gel column 7, an adjusting nut 8, an electromagnet 9, a speed measuring sensor 10, a wheel shaft 11 and a speed measuring wheel 12; wherein the housing comprises a shell 1 and a top cover 2.
The shell 1 is a hollow cylinder with a sealed bottom end and an open top end, the wall thickness of the side wall of the hollow cylinder is preferably 30-40 mm, and the wall thickness of the bottom end is preferably 80-100 mm; the bottom end surface inside the shell 1 is provided with 4 equally-divided threaded holes 101, the threaded holes 101 are blind holes, and the depth is preferably 50-70 mm.
The top cover 2 is arranged at the top end of the shell 1, and screw holes are correspondingly arranged on the outer ring of the top cover 2 and the top end of the shell 1 and are fixed by using bolts for convenient later disassembly and maintenance; the downward face of the top cover 2 is the back, a threaded hole 201 is formed in the center of the back, a threading hole 202 is formed beside the threaded hole 201, a circle of through holes 203 and a circle of positioning blind holes 204 are formed in the back, and the number of the through holes 203 and the number of the positioning blind holes 204 are 4 and are equally distributed.
The tray 5 is provided with a circle of through holes 501 and a circle of guide through holes 502, and the through holes 501 and the guide through holes 502 are correspondingly matched with the through holes 203 and the positioning blind holes 204 respectively.
The tray 5 is provided with the permanent magnet 4, in order to avoid magnetic attraction interference, the tray 5 is preferably made of aluminum alloy materials, the permanent magnet 4 is fixedly connected with the tray 5, and the connection mode is not limited to modes of adhesion, threaded connection, embedded connection and the like, and is preferably adhered with tray glue.
The guide post 3 is a smooth cylinder, one end of the guide post 3 is provided with external threads matched with the threaded hole 101 at the bottom end of the shell 1, the guide post passes through the guide through hole 502 of the tray 5 and then is fixed at the bottom end of the shell 1, the other end of the guide post is inserted into the positioning blind hole 204 of the top cover 2, and after the top cover 2 is fixedly installed with the shell 1, the guide post 3 is stably fixed inside the shell 1. The guide post 3 is preferably made of an aluminum alloy material, and the surface roughness thereof should be less than ra0.2, preferably ra0.05, to ensure smooth up-and-down sliding of the tray 5 along the guide post 3.
The lower extreme of die-pin 6 is equipped with one section internal thread, and the bolt passes in the internal thread of die-pin 6 after the through-hole 501 of tray 5, with die-pin 6 and tray 5 fixed connection, die-pin 6 passes behind the through-hole 203 of top cap 2 and is connected with speed sensor 10.
The connection mode of the support rods 6 and the trays 5 can be correspondingly adjusted according to the thickness dimension of the trays 5, and when the thickness of the trays 5 is thicker, for example, the thickness is more than or equal to 30mm, screw holes can be formed in the trays 5, and the support rods 6 are provided with a section of external threads matched with the screw holes for threaded fixation.
The electromagnet 9 is arranged at a threaded hole 201 of the top cover 2, and a conductive wire of the electromagnet is led out from a threading hole 202.
In the present embodiment, the elastic buffer means located at the upper portion of the housing 1 is provided as a silica gel column 7, and the adjusting means is provided as an adjusting nut 8. The silica gel column 7 is arranged on the guide column 3, the distance between the silica gel column 7 and the electromagnet 9 is 50-80 mm, the silica gel column 7 can play a role in buffering the tray 5 moving upwards, and the silica gel column 9 and the guide column 3 are in interference fit for fully realizing the functions of the silica gel column 9. The guide column 3 is provided with a section of external thread close to the electromagnet 9, and the adjusting nut 8 is arranged at the section of external thread and above the silica gel column 9. According to the actual condition of the site, the height of the nut 8 on the guide post 3 can be adjusted, so that the upper limit position of the movement of the tray 5 can be conveniently controlled. In this embodiment, the elastic buffer device at the upper part of the housing may be a spring with a better buffer effect.
The speed measuring sensor 10 is installed above the top cover 2, is fixedly connected with the supporting rod 6, is preferably in threaded connection, is convenient to disassemble and maintain in the later period, the speed measuring sensor 10 is provided with a through hole, the wheel shaft 11 penetrates through the through hole, and the speed measuring wheels 12 are installed at two ends of the wheel shaft and can smoothly rotate.
The speed measuring device needs to be firmly installed on a support base of the belt conveyor when in use, and the installation mode can adopt common modes such as welding fixation, bolt fixation and the like, and a detachable movable connection mode is preferred for the convenience of later equipment maintenance.
In order to convert the speed information acquired by the testing device into digital and sound signals, the speed measuring device disclosed by the invention is matched with an upper limit and lower limit alarm output tachometer, which is hereinafter referred to as a tachometer. The installation position of the tachometer is determined according to the actual use condition of the production site, and the tachometer is preferably installed at the support base of the belt conveyor and is close to the speed measuring device. The speed measuring device and the tachometer are matched for use, the upper limit and the lower limit of belt running speed alarm can be set, and an alarm signal is issued when the upper limit and the lower limit are exceeded, so that operators can timely conduct fault elimination.
The application method of the speed measuring device for the belt conveyor comprises the following steps of:
s1, setting the upper limit of the stroke of a lifting mechanism by using an adjusting device, measuring the distance H from the lower surface of a belt to a bracket base by using a measuring ruler, electrifying an electromagnet, measuring the distance H from the highest point of a speed measuring wheel to the bracket base, and rotating the adjusting device to ensure that H is larger than H, wherein the difference range is 5-10 cm;
s2, in the power-off state, the speed measuring device is fixedly arranged on the bracket base, at the moment, the tray 5 naturally falls on the bottom of the speed measuring device, and an operator applies proper pressure to the speed measuring wheel downwards by using the flat plate;
s3, after the electromagnet 9 is electrified, an adsorption force is generated on the permanent magnet 4, the lifting mechanism and the speed measuring mechanism overcome the self-gravity and partial elastic potential energy of the elastic buffer device and move upwards along the guide column 3, an operator properly controls the upwards moving speed of the tray 5, and when the speed measuring wheel is close to the lower surface of the belt, the operator pulls away the flat plate, so that the speed measuring wheel is closely attached to the lower surface of the belt;
s4, installing a tachometer, setting the upper limit and the lower limit of a belt running speed alarm, starting a belt conveyor to perform production operation, and when the belt jumps, under the buffering and damping effects of an elastic buffering device, enabling a speed measuring wheel to always contact the bottom surface of the belt and not be damaged easily;
s5, the speed measuring device provides accurate speed pulse signals for the high-accuracy belt scale for realizing accurate measurement.
The following is a detailed description of the installation and use states of the speed measuring device.
After the speed measuring device is installed, the tray 5 naturally falls on the bottom of the shell, the electromagnet generates magnetic attraction after being electrified, the permanent magnet 4 moves upwards under force to drive the tray 5 to move upwards along the guide post 3, and synchronously, the speed measuring sensor is driven to move upwards until the speed measuring wheel is attached to the lower surface of the belt, and the speed measuring device starts to measure the running speed of the belt.
1) When the belt steadily operates, under the action of upward magnetic attraction force, the speed measuring wheel generates certain pressure on the lower surface of the belt, the lower surface of the belt can be tightly attached all the time, and the acquired speed information is transmitted to the speed measuring sensor for data reading. The speed measuring sensor is connected with the tachometer through a signal wire, the tachometer is arranged at a bracket of the belt conveyor, belt running speed information acquired in real time by the speed measuring wheel exceeds the upper limit and the lower limit of a numerical value set by the tachometer, and the tachometer sends out an alarm signal.
2) When the condition of vibration of the conveyor track or belt sticking or swelling occurs, the belt can correspondingly slip or jump up and down in the vertical direction during running.
2.1 when the belt operation skids, the belt operation speed slows down or stops the operation, and the speed measuring wheel transmits the collected belt operation speed information to the speed measuring sensor, and the speed measuring sensor recognizes the belt operation speed information and transmits the belt operation speed information to the tachometer through the signal wire.
2.2 when the belt jumps downwards, the lower surface of the belt applies downward acting force to the speed measuring wheel, and the speed measuring wheel transmits the acting force to the tray 5 through the speed measuring sensor and the supporting rod to drive the tray 5 to move downwards along the guide post 3; in step, due to the magnetic attraction of the electromagnet 9 to the permanent magnet 4, the tray 5 moves downwards and receives upward reaction force, and the reaction force promotes the speed measuring wheel to be closely attached to the lower surface of the belt all the time, so that real-time and accurate measurement of the running speed of the belt is realized.
2.3 when the belt upwards jumps, the pressure of the lower surface of the belt is reduced or eliminated, the stress balance state of the speed measuring wheel is destroyed, the magnetic attraction force generated by the electromagnet 9 on the permanent magnet 4 overcomes the elastic potential energy of part of the elastic buffer device, the tray is driven to move upwards along the guide post 3, and the speed measuring wheel is synchronously driven to be always tightly attached to the lower surface of the belt, the stress balance state is reached again, and the real-time and accurate measurement of the running speed of the belt is completed.
When abnormal belt running occurs, the running state is not single unidirectional movement, and is usually the combination of various stress directions, and in the complex running process, the magnetic attraction force is used as an uninterrupted force to cause the speed measuring wheel to always generate certain pressure on the lower surface of the belt, the speed measuring wheel is tightly attached to the lower surface of the belt, the change information of the running speed of the belt is captured sharply, and the stability of the running speed measuring process of the belt and the accuracy of measured data are obviously improved.
In the above embodiment:
in order to optimize the speed measuring device, as shown in fig. 4, the speed measuring device further comprises an elastic buffer device spring 102, the spring 102 is sleeved on the guide post 3 and fixedly installed at the bottom end of the shell, and the tray 5 naturally falls on the spring when the speed measuring device is not electrified. The elasticity 102 may be replaced with a member having an elastic buffer function such as a silica gel column.
The electromagnet 9 can be replaced according to the actual use condition of the site, and can also be replaced by an electromagnet with adjustable magnetic force, so that the belt running speed measurement can be carried out by better matching with belt conveyors with different specifications and sizes.
The die-pin can also set up the replacement section that can increase cylinder length, the replacement section with die-pin body threaded connection increases the replacement section, and the belt conveyor of cooperation different specification sizes that can be better carries out belt running speed and measures.
The guide post 3 and the supporting rod are solid cylinders, and can be hollow cylinders on the premise of ensuring mechanical strength, so that the raw material cost is reduced, and the overall weight of the speed measuring device is reduced.
The guide posts 3 can also be arranged to be 3, and the corresponding trays 5 are arranged to be equilateral triangles, so that the materials for the speed measuring device can be further reduced and the weight can be reduced.
The shell 1, the guide post 3, the supporting rod 6 and the tray 5 are all made of non-magnetic materials, such as aluminum alloy materials. Engineering PE plastic, nylon or ceramic material, etc. can avoid magnetic attraction interference to the greatest extent, and has the advantages of acid and alkali resistance, high temperature resistance, portability and difficult deformation, wherein aluminum alloy material is preferred.
The suction force of the electromagnet 9 is selected by reasonably evaluating and selecting according to the weights of the tray, the permanent magnet, the speed measuring sensor and the like, so as to ensure that the speed measuring device reaches the optimal use state.
The speed measuring wheel has various specifications of size according to the field working environment.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims.
Claims (10)
1. A speed measuring device for a belt conveyor, comprising:
the shell is provided with a containing cavity, and a guide post is arranged in the containing cavity;
the electromagnet is arranged at the upper end inside the shell;
the lifting mechanism is provided with a permanent magnet, and under the action of the electromagnet, the lifting mechanism always has kinetic potential energy moving upwards along the guide post; and
the speed measuring mechanism is located above the shell and detachably connected with the lifting mechanism, and can always be attached to the lower surface of the belt and acquire speed information of belt running under the action of lifting force of the lifting mechanism.
2. The speed measuring device for a belt conveyor according to claim 1, wherein the housing comprises a shell and a top cover, two ends of the guide post are respectively fixed to the bottom end of the shell and the top cover, and the electromagnet is fixedly mounted on the top cover.
3. The speed measuring device for a belt conveyor according to claim 1, wherein the lifting mechanism further comprises a tray and a supporting rod, the permanent magnet is fixedly mounted on the tray, one end of the supporting rod is mounted on the tray, and the other end of the supporting rod penetrates through the shell and is detachably connected with the speed measuring mechanism.
4. A speed measuring device for a belt conveyor according to claim 3, wherein the support rods are provided with replacement sections which increase their length.
5. A speed measuring device for a belt conveyor according to any one of claims 1 to 4, wherein the guide post is provided with an adjusting device adjacent to the electromagnet, the adjusting device being capable of adjusting the upper limit of the distance that the lifting mechanism moves upwards along the guide post.
6. A speed measuring device for a belt conveyor according to any one of claims 1 to 4, further comprising resilient cushioning means located at both ends of the lift mechanism stroke.
7. The speed measuring device for a belt conveyor of claim 5, further comprising elastic cushioning means located at both ends of the lift mechanism travel.
8. A speed measuring device for a belt conveyor according to any one of claims 1 to 4, wherein the outer wall roughness Ra of the guide post is 0.2 or less.
9. The speed measuring device for a belt conveyor according to claim 1, wherein the speed measuring mechanism comprises a speed measuring sensor and speed measuring wheels, and the speed measuring wheels are arranged on two sides of the speed measuring sensor through wheel shafts.
10. The application method of the speed measuring device for the belt conveyor is characterized by comprising the following steps of:
s1, setting the upper limit of the stroke of a lifting mechanism by using an adjusting device, measuring the distance H from the lower surface of a belt to a bracket base by using a measuring ruler, electrifying an electromagnet, measuring the distance H from the highest point of a speed measuring wheel to the bracket base, and rotating the adjusting device to ensure that H is larger than H, wherein the difference range is 5-10 cm;
s2, in the power-off state, the speed measuring device is fixedly arranged on the bracket base, at the moment, the tray naturally falls on the bottom of the speed measuring device, and an operator applies proper pressure to the speed measuring wheel downwards by using the flat plate;
s3, after the electromagnet is electrified, an adsorption force is generated on the permanent magnet, the lifting mechanism and the speed measuring mechanism overcome the self-gravity and partial elastic potential energy of the elastic buffer device and move upwards along the guide column, an operator properly controls the upward movement speed of the tray, and when the speed measuring wheel is close to the lower surface of the belt, the operator pulls away the flat plate, so that the speed measuring wheel is closely attached to the lower surface of the belt;
s4, installing a tachometer, setting the upper limit and the lower limit of a belt running speed alarm, starting a belt conveyor to perform production operation, and when the belt jumps, under the buffering and damping effects of an elastic buffering device, enabling a speed measuring wheel to always contact the bottom surface of the belt and not be damaged easily;
s5, the speed measuring device provides accurate speed pulse signals for the high-accuracy belt scale for realizing accurate measurement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| US4582192A (en) * | 1984-10-26 | 1986-04-15 | Lars Helmersson | Conveyor with twin belt synchronizing mechanism |
| CN208916140U (en) * | 2018-08-22 | 2019-05-31 | 北京京东尚科信息技术有限公司 | A kind of encoder installation mechanism and the belt conveyor line using it |
| CN110058044A (en) * | 2019-05-10 | 2019-07-26 | 北京理工大学 | A kind of magnetic strength speed measuring equipment and steel plate speed measurement method |
| CN210720445U (en) * | 2019-10-15 | 2020-06-09 | 大唐山西发电有限公司太原第二热电厂 | Mechanical speed measuring device and coupler thereof |
| CN212580849U (en) * | 2020-08-17 | 2021-02-23 | 吉林鑫达钢铁有限公司 | Belt transportation auxiliary device |
| CN212607713U (en) * | 2020-06-03 | 2021-02-26 | 宁夏交通建设股份有限公司 | Device for measuring rotating speed of cold material conveying belt of asphalt mixing station |
| CN216485082U (en) * | 2021-11-30 | 2022-05-10 | 徐州天明测控技术有限公司 | High-precision belt scale speed measuring device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006036328A1 (en) * | 2006-08-03 | 2008-02-07 | Siemens Ag | Circulating device for a transport chain or a conveyor belt |
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- 2022-05-20 CN CN202210548590.6A patent/CN114873185B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4582192A (en) * | 1984-10-26 | 1986-04-15 | Lars Helmersson | Conveyor with twin belt synchronizing mechanism |
| CN208916140U (en) * | 2018-08-22 | 2019-05-31 | 北京京东尚科信息技术有限公司 | A kind of encoder installation mechanism and the belt conveyor line using it |
| CN110058044A (en) * | 2019-05-10 | 2019-07-26 | 北京理工大学 | A kind of magnetic strength speed measuring equipment and steel plate speed measurement method |
| CN210720445U (en) * | 2019-10-15 | 2020-06-09 | 大唐山西发电有限公司太原第二热电厂 | Mechanical speed measuring device and coupler thereof |
| CN212607713U (en) * | 2020-06-03 | 2021-02-26 | 宁夏交通建设股份有限公司 | Device for measuring rotating speed of cold material conveying belt of asphalt mixing station |
| CN212580849U (en) * | 2020-08-17 | 2021-02-23 | 吉林鑫达钢铁有限公司 | Belt transportation auxiliary device |
| CN216485082U (en) * | 2021-11-30 | 2022-05-10 | 徐州天明测控技术有限公司 | High-precision belt scale speed measuring device |
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| CN114873185A (en) | 2022-08-09 |
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Inventor after: Cao Feng Inventor after: Peng Guangyan Inventor after: Yang Longming Inventor before: Yuan Zhentao Inventor before: Li Zhancheng Inventor before: Yang Longming |