CN114873185A - Speed measuring device and method for belt conveyor - Google Patents
Speed measuring device and method for belt conveyor Download PDFInfo
- Publication number
- CN114873185A CN114873185A CN202210548590.6A CN202210548590A CN114873185A CN 114873185 A CN114873185 A CN 114873185A CN 202210548590 A CN202210548590 A CN 202210548590A CN 114873185 A CN114873185 A CN 114873185A
- Authority
- CN
- China
- Prior art keywords
- speed measuring
- belt
- speed
- measuring device
- tray
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 14
- 230000007246 mechanism Effects 0.000 claims abstract description 47
- 230000033001 locomotion Effects 0.000 claims abstract description 11
- 230000000694 effects Effects 0.000 claims abstract description 7
- 238000005381 potential energy Methods 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 230000003139 buffering effect Effects 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 5
- 238000013016 damping Methods 0.000 claims description 3
- 238000001179 sorption measurement Methods 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 description 10
- 229910002027 silica gel Inorganic materials 0.000 description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 9
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- XBWAZCLHZCFCGK-UHFFFAOYSA-N 7-chloro-1-methyl-5-phenyl-3,4-dihydro-2h-1,4-benzodiazepin-1-ium;chloride Chemical compound [Cl-].C12=CC(Cl)=CC=C2[NH+](C)CCN=C1C1=CC=CC=C1 XBWAZCLHZCFCGK-UHFFFAOYSA-N 0.000 description 5
- 229910000838 Al alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000009191 jumping Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 206010044565 Tremor Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Images
Classifications
-
- 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
-
- 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
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Control Of Conveyors (AREA)
Abstract
The utility model provides a speed sensor for belt conveyor, includes the casing, lifts mechanism and tacho mechanism, inside guide post and the electro-magnet of being equipped with of casing, the electro-magnet install in the inside upper end of casing lifts the mechanism and is equipped with the permanent magnet under the electro-magnet effect, lift the mechanism and have all the time along the power potential energy of guide post upward movement, tacho mechanism is located the top of casing, with lift the mechanism and can dismantle the connection lift the effect of lifting of mechanism down, tacho 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 activities such as coal mining and mine mining, a belt conveyor plays an important role as a communication and transportation device between each process, and along with the improvement of production capacity, a high-speed and heavy-load belt conveyor is widely adopted at present. Modern production lines are almost all automatic lines with strong continuity, which puts higher requirements on the stable operation of mechanical equipment, but the conditions of uneven blanking and the like inevitably exist in the actual production, which often cause the belt to slip, so that the belt stops running at low speed or stop running, thereby causing material accumulation and material scattering, requiring manual cleaning, increasing the labor intensity of workers and influencing the production environment; moreover, although the belt slips to cause low speed or stop running, the driving motor of the head of the belt conveyer still runs at the set speed, and the belt is easily torn due to long-time friction, which seriously affects the continuous production and causes great economic loss, so that the real-time and accurate measurement of the running speed of the belt becomes important, and the running state of the belt can be known, thereby avoiding economic loss.
Meanwhile, when the high-precision belt weigher is used for measuring the material flow on a belt, the accuracy of a speed signal is an important measurement parameter, and the metering precision of the belt weigher is influenced.
At present, speed measuring devices for monitoring the speed of belt conveyors mostly adopt single-wheel or double-wheel speed measuring sensors. The double-wheel speed measuring sensor is pressed on the upper surface of the belt or is reversely attached to the lower surface of the belt through the balance weight, so that the belt speed measurement is carried out under the condition that the single-wheel or double-wheel speed measuring sensor is flexibly operated. The self gravity of the balancing weight in the speed measuring device is relied on to balance the weight of the speed measuring wheel in the measuring process, if the running track of the belt conveyor has tremble or belt sticky materials, and the conditions such as bulge appear, the speed measuring double wheel and the belt are separated to generate stall errors, so that the speed measuring wheel is separated from the surface of the belt, and the speed measuring deviation is caused.
Disclosure of Invention
The invention provides a speed measuring device and method for a belt conveyor, which can ensure real-time and accurate measurement of the running speed of a belt under the conditions of belt slippage, belt jump and the like.
The technical scheme provided by the invention is as follows:
a speed measuring device for a belt conveyor, comprising:
the device comprises a shell, a guide post, a positioning piece and a positioning piece, wherein the shell is provided with an accommodating cavity, and the accommodating cavity is internally provided with the inner installation guide post;
the electromagnet is arranged at the upper end inside the shell;
the lifting mechanism is provided with a permanent magnet and has power potential energy moving upwards along the guide post under the action of the electromagnet; and
the speed measuring mechanism is located the top of casing, with the connection can be dismantled to the lifting mechanism the effect of lifting mechanism is down, the lower surface that the speed measuring mechanism can laminate the belt all the time and obtain the speed information of belt operation.
Furthermore, the casing includes shell and top cap, the guide post both ends are fixed in respectively the shell bottom with the top cap, the electro-magnet fixed mounting in on the top cap.
Further, it still includes tray and die-pin to lift the mechanism, the permanent magnet fixed mounting in the tray, the one end of die-pin install in the tray, its other end runs through the casing with the connection can be dismantled to the tacho mechanism.
Further, the supporting rod is provided with a replacing section capable of increasing the length of the supporting rod.
Furthermore, the guide post is close to the electromagnet, and an adjusting device is installed on the guide post and can adjust the distance upper limit of the lifting mechanism along the upward movement of the guide post.
Furthermore, the lifting mechanism further comprises an elastic buffer device, and the elastic buffer device is positioned at two ends of the stroke of the lifting mechanism.
Furthermore, the lifting mechanism further comprises an elastic buffer device, and the elastic buffer device is positioned at two ends of the stroke of the lifting mechanism.
Furthermore, the roughness Ra of the outer wall of the guide post is less than or equal to 0.2.
Furthermore, the speed measuring mechanism comprises a speed measuring sensor and a speed measuring wheel, and the speed measuring wheel is arranged on two sides of the speed measuring sensor through a wheel shaft.
A use method of a speed measuring device for a belt conveyor comprises the following steps:
s1, setting the upper limit of the stroke of the lifting mechanism by using the adjusting device, measuring the distance H from the lower surface of the belt to the support base by using the measuring tape, electrifying the electromagnet, measuring the distance H from the highest point of the speed measuring wheel to the support base, and rotating the adjusting device to enable H to be larger than H and the difference range to be 5-10 cm;
s2, in a power-off state, the speed measuring device is fixedly arranged on the support base, the tray naturally falls on the bottom of the speed measuring device, and an operator applies appropriate 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 of the lifting mechanism and the speed measuring mechanism and move upwards along the guide column by partial elastic potential energy of the elastic buffer device, the operator appropriately controls the upward movement speed of the tray, and when the speed measuring wheel is close to the lower surface of the belt, the operation personnel pulls away the flat plate, so that the speed measuring wheel is tightly attached to the lower surface of the belt;
s4, installing a tachometer, setting upper and lower alarm limits of the running speed of the belt, starting the belt conveyor to carry out production operation, and when the belt jumps, the tachometer wheel always contacts the bottom surface of the belt and is not easy to damage under the buffering and damping action of the elastic buffer device;
and S5, providing an accurate speed pulse signal to the high-precision belt scale by the speed measuring device, and realizing accurate metering.
The invention has the following effects:
1. the magnetic attraction generated by the electromagnet can enable the permanent magnet to keep a stressed state all the time, and meanwhile, the excellent surface finish of the guide post can ensure that the tray can smoothly move downwards or upwards along the guide post, ensure that the speed measuring device can sensitively and accurately deal with the jumping change of the belt, always keep the speed measuring wheel tightly attached to the lower surface of the belt, eliminate the occurrence of weightlessness and acceleration, and have quick response and no 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, the speed measuring device is suitable for belt conveyors of different models, and equipment failure or damage caused by the overload of the travel of the speed measuring device can be avoided when the abnormal condition of extreme jumping of the belt occurs.
3. The elastic buffer device arranged at the bottom end of the shell can play a remarkable role in buffering the impact force generated by the falling back of the tray when the speed measuring device is in a non-working state or the electromagnet is suddenly powered off; the elastic buffer device that the top set up can effectively slow down the in-process that tests the speed, and the impact that the tray frequent up-and-down motion brought effectively protects speed sensor, extension speed sensor life.
Drawings
FIG. 1 is an overall cross-sectional view of the present invention;
FIG. 2 is a schematic view of the back of the top cover of the present invention;
FIG. 3 is a schematic cross-sectional view of the housing of the present invention;
fig. 4 is a schematic view of the spring mounting of the present invention.
In the figure: the method comprises the following steps of 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 column, 4-permanent magnet, 5-tray, 6-support rod, 7-silica gel column, 8-adjusting nut, 9-electromagnet, 10-speed measuring sensor, 11-wheel shaft and 12-speed measuring 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. As one skilled in the art will appreciate, various names may be used to refer to a component. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the 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 which follows is a preferred embodiment of the invention, but is made for the purpose of illustrating the general principles of the invention and not for the purpose of limiting the scope of the invention. The scope of the present invention is defined by the appended claims.
As shown in fig. 1 to 3, a speed measuring device (hereinafter referred to as a speed measuring device) for a belt conveyor comprises 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 of the inner part of the shell 1 is equally provided with 4 threaded holes 101, and 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, so that later-stage disassembly and assembly or maintenance are facilitated, threaded holes are correspondingly formed in the outer ring of the top cover 2 and the top end face of the shell 1, and the top cover is fixedly installed by using bolts; the downward face of top cap 2 is the back, and back center department sets up screw hole 201, and the screw hole 201 next door sets up through wires hole 202, and the back still is equipped with round through-hole 203 and round location blind hole 204, the quantity of through-hole 203 and location blind hole 204 is 4, the equipartition setting.
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.
Install permanent magnet 4 on tray 5, for avoiding magnetism to inhale the interference, the preferred aluminium alloy material preparation of tray 5, permanent magnet 4 and tray 5 fixed connection, connected mode is not limited to modes such as bonding, threaded connection, gomphosis connection, preferred and tray glue bonding.
The guide column 3 is a smooth cylinder, one end of the guide column is provided with an external thread matched with the bottom threaded hole 101 of the shell 1, the guide column penetrates through the guide through hole 502 of the tray 5 and then is fixed at the bottom end part of the shell 1, the other end of the guide column is inserted into the positioning blind hole 204 of the top cover 2, and after the top cover 2 and the shell 1 are fixedly installed, the guide column 3 is stably fixed in the shell 1. The guide posts 3 are preferably made of aluminum alloy material, and the surface roughness of the guide posts is less than Ra0.2, preferably Ra0.05, so as to ensure that the tray 5 can smoothly slide up and down along the guide posts 3.
The lower end of the supporting rod 6 is provided with a section of internal thread, a bolt penetrates through the through hole 501 of the tray 5 and then is screwed into the internal thread of the supporting rod 6, the supporting rod 6 is fixedly connected with the tray 5, and the supporting rod 6 penetrates through the through hole 203 of the top cover 2 and then is connected with the speed measuring sensor 10.
The connecting mode of the support rod 6 and the tray 5 can be correspondingly adjusted according to the thickness of the tray 5, when the thickness of the tray 5 is thicker, for example, more than or equal to 30mm, a threaded hole is formed in the tray 5, and the support rod 6 is provided with a section of external thread matched with the threaded hole for threaded fixing.
The electromagnet 9 is arranged at a threaded hole 201 of the top cover 2, and a conducting 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 in order to enable the silica gel column 9 to fully realize the function, the silica gel column 9 and the guide column 3 are arranged in an interference fit mode. A section of external thread is arranged on the guide column 3 close to the electromagnet 9, and the adjusting nut 8 is arranged on the section of external thread and is arranged above the silica gel column 9. According to the actual situation on the spot, the height of the nut 8 on the guide post 3 is adjusted, and the upper limit position of the movement of the tray 5 can be conveniently controlled. In this embodiment, the elastic buffer device on the upper portion of the housing may also be a spring with better buffering effect.
The speed measuring sensor 10 is installed above the top cover 2 and fixedly connected with the supporting rod 6, preferably in threaded connection, and convenient to detach 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.
Need firm the installing on belt conveyor's support base when the speed sensor uses, the mounting means can adopt modes such as common welded fastening, bolt fastening, for later equipment maintenance's convenience, preferred detachable swing joint mode.
In order to convert the speed information collected by the testing device into digital and sound signals, the speed measuring device of the invention is matched with an upper limit alarm and a lower limit alarm output tachometer, which is hereinafter referred to as a tachometer for short. The installation position of the tachometer is determined according to the actual use condition of a production field, and the tachometer is preferably installed at the support base of the belt conveyor and close to the speed measuring device. Speed sensor and tachometer cooperation are used, can set for the upper and lower limits that belt operating speed reported to the police, surpass and set for the upper and lower limit and issue alarm signal promptly, and the operating personnel of being convenient for in time carries out troubleshooting.
A use method of a speed measuring device for a belt conveyor comprises the following steps:
s1, setting the upper limit of the stroke of the lifting mechanism by using the adjusting device, measuring the distance H from the lower surface of the belt to the support base by using the measuring tape, electrifying the electromagnet, measuring the distance H from the highest point of the speed measuring wheel to the support base, and rotating the adjusting device to enable H to be larger than H and the difference range to be 5-10 cm;
s2, in a 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 appropriate 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 of the lifting mechanism and part of elastic potential energy of the elastic buffer device to move upwards along the guide column 3, and an operator appropriately controls the speed of the upward movement of the tray 5 until the speed measuring wheel is close to the lower surface of the belt, the flat plate is pulled away, so that the speed measuring wheel is tightly attached to the lower surface of the belt;
s4, installing a tachometer, setting upper and lower alarm limits of the running speed of the belt, starting the belt conveyor to carry out production operation, and when the belt jumps, the tachometer wheel always contacts the bottom surface of the belt and is not easy to damage under the buffering and damping action of the elastic buffer device;
and S5, providing an accurate speed pulse signal to the high-precision belt scale by the speed measuring device, and realizing accurate metering.
The following is a detailed description of the installation and use state of the speed measuring device.
After the speed sensor finishes installing, tray 5 falls in the bottom of casing naturally, produces magnetic attraction after the electro-magnet circular telegram, and 4 atress upward movements of permanent magnet order about tray 5 along 3 upward movements of guide post, and is synchronous, drives the upward movement of speed sensor to the laminating of tachometer wheel and belt lower surface, and speed sensor begins to carry out the belt functioning speed and measures.
1) When the belt steadily moves, under the effect of ascending magnetic attraction, the speed wheel produces certain pressure to the belt lower surface, can closely laminate belt lower surface all the time, carries out data reading to speed sensor with the speed information transmission of gathering. The speed measuring sensor is connected with the revolution meter through a signal wire, the revolution meter is installed at a support of the belt conveyor, the belt running speed information acquired by the speed measuring wheel in real time exceeds the upper limit and the lower limit of a numerical value set by the revolution meter, and the revolution meter sends out an alarm signal.
2) When the conveyor track shakes or the belt is stuck and bulges, the belt can correspondingly slide or jump up and down in the vertical direction during running.
2.1 when the belt operation skids, the belt functioning speed slows down or stops the operation, and the belt functioning speed information transmission to the tachometer that the tachometer wheel will gather this moment, and tachometer sensor discerns belt functioning speed information and passes through the signal line and transmits for the tachometer, because belt functioning speed is less than the numerical value lower limit that the tachometer set up, the tachometer sends alarm signal.
2.2 when the belt jumps downwards, the lower surface of the belt applies a downward acting force to the speed measuring wheel, the speed measuring wheel transmits the acting force to the tray 5 through the speed measuring sensor and the support rod, and the tray 5 is driven to move downwards along the guide post 3; synchronous, because the magnetic attraction of electro-magnet 9 to permanent magnet 4 receives ascending reaction force when tray 5 downstream, reaction force makes the lower surface that the tachometer wheel can closely laminate the belt all the time, realizes the real-time, accurate measurement to belt functioning speed.
2.3 when the belt upwards is beated, the velocity measuring wheel receives the pressure of belt lower surface and diminishes or disappears, the stress balance state of velocity measuring wheel is destroyed, the magnetic attraction that electro-magnet 9 produced permanent magnet 4 overcomes partial elastic buffer's elasticity potential energy, orders about the tray and moves along guide post 3 upwards, and is synchronous, makes the velocity measuring wheel closely laminate belt lower surface all the time, reaches the stress balance state again, accomplishes real-time, accurate measurement to belt functioning speed.
Because when the unusual condition of belt operation appears, its running state is not single unidirectional motion, is the synthesis of various atress directions usually, and this complicated operation in-process, magnetic attraction is as a incessant power, makes the tachometer wheel produce certain pressure to the belt lower surface all the time, closely laminates the belt lower surface, and sharp seizure belt operating speed's change information, the improvement belt that is showing moves the stability of process of testing the speed and measured data's accuracy.
In the above embodiment:
in order to optimize the speed measuring device, as shown in fig. 4, the speed measuring device further includes an elastic buffer spring 102, the spring 102 is sleeved on the guide post 3 and is fixedly installed at the bottom end of the housing, and the tray 5 naturally falls on the spring when the speed measuring device is not powered on. Here, the elasticity 102 may be replaced with a member having an elasticity buffering function such as a silica gel column.
The electromagnet 9 can be replaced according to the actual use condition on site, and can also be replaced by an electromagnet with adjustable magnetic force, so that the belt running speed can be measured 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 different specification and dimension's of cooperation belt conveyor that can be better carries out belt running speed and measures.
The guide post 3 with the die-pin is solid cylinder, under the prerequisite of guaranteeing mechanical strength, also can set up to hollow cylinder, reduces raw and other materials cost, alleviates speed sensor's whole weight.
3 also can set up to 3 guide posts, and corresponding tray 5 sets up to equilateral triangle, can further reduce the speed sensor material and weight reduction.
The shell 1, the guide posts 3, the support rods 6 and the tray 5 are made of non-magnetic materials, such as aluminum alloy materials. Engineering PE plastics, nylon or ceramic material etc. can avoid magnetic attraction to disturb by at utmost, and have acid and alkali-resistance, high temperature resistant, light and non-deformable's advantage, wherein preferred aluminum alloy material.
The selection of the attraction of the electromagnet 9 is reasonably evaluated and selected according to the weight of the tray, the permanent magnet, the speed measuring sensor and the like, so that the speed measuring device is ensured to reach the optimal use state.
The speed measuring wheel has various specifications according to the field working environment.
The foregoing shows and describes the general principles, essential 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, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.
Claims (10)
1. A speed sensor for a belt conveyor, comprising:
the device comprises a shell, a guide post and a positioning mechanism, wherein the shell is provided with an accommodating cavity, and the accommodating cavity is internally provided with the guide post;
the electromagnet is arranged at the upper end inside the shell;
the lifting mechanism is provided with a permanent magnet and has power potential energy moving upwards along the guide post under the action of the electromagnet; and
the speed measuring mechanism is located the top of casing, with the connection can be dismantled to the lifting mechanism the effect of lifting mechanism is down, the lower surface that the speed measuring mechanism can laminate the belt all the time and obtain the speed information of belt operation.
2. A speed measuring device according to claim 1, wherein said housing includes a housing and a top cover, said guide post is fixed at both ends to said bottom end of said housing and said top cover, respectively, and said electromagnet is fixedly mounted to said top cover.
3. A device according to claim 1, wherein said lifting mechanism further comprises a tray and a supporting rod, said permanent magnet is fixedly mounted on said tray, one end of said supporting rod is mounted on said tray, and the other end of said supporting rod penetrates said housing and is detachably connected to said speed measuring mechanism.
4. A speed measuring device for belt conveyors according to claim 3 wherein the carrier bar is provided with a replacement section which increases its length.
5. A speed measuring device according to any one of claims 1 to 4 wherein the guide post is provided with an adjustment means adjacent the electromagnet, the adjustment means being capable of adjusting the upper limit of the distance the lifting mechanism moves upwardly along the guide post.
6. A speed measuring device according to any one of claims 1 to 4 further including resilient cushioning means at each end of the travel of the lifting mechanism.
7. A speed measuring device for belt conveyors according to claim 5 further comprising elastic buffer means located at both ends of the lift mechanism stroke.
8. A speed sensor for belt conveyors according to any of claims 1 to 4 wherein the outer wall roughness Ra of the guide post is 0.2 or less.
9. A speed measuring device for a belt conveyor according to claim 1, wherein said speed measuring mechanism comprises a speed measuring sensor and a speed measuring wheel, said speed measuring wheel being mounted on both sides of said speed measuring sensor through an axle.
10. The use method of the speed measuring device for the belt conveyor is characterized by comprising the following steps:
s1, setting the upper limit of the stroke of the lifting mechanism by using the adjusting device, measuring the distance H from the lower surface of the belt to the support base by using the measuring tape, electrifying the electromagnet, measuring the distance H from the highest point of the speed measuring wheel to the support base, and rotating the adjusting device to enable H to be larger than H and the difference range to be 5-10 cm;
s2, in a power-off state, the speed measuring device is fixedly arranged on the support base, the tray naturally falls on the bottom of the speed measuring device, and an operator applies appropriate 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 of the lifting mechanism and the speed measuring mechanism and move upwards along the guide column by partial elastic potential energy of the elastic buffer device, the operator appropriately controls the upward movement speed of the tray, and when the speed measuring wheel is close to the lower surface of the belt, the operation personnel pulls away the flat plate, so that the speed measuring wheel is tightly attached to the lower surface of the belt;
s4, installing a tachometer, setting upper and lower alarm limits of the running speed of the belt, starting the belt conveyor to carry out production operation, and when the belt jumps, the tachometer wheel always contacts the bottom surface of the belt and is not easy to damage under the buffering and damping action of the elastic buffer device;
and S5, providing an accurate speed pulse signal to the high-precision belt scale by the speed measuring device, and realizing accurate metering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210548590.6A CN114873185B (en) | 2022-05-20 | 2022-05-20 | Speed measuring device and method for belt conveyor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210548590.6A CN114873185B (en) | 2022-05-20 | 2022-05-20 | Speed measuring device and method for belt conveyor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114873185A true CN114873185A (en) | 2022-08-09 |
| CN114873185B CN114873185B (en) | 2023-06-16 |
Family
ID=82677855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210548590.6A Active CN114873185B (en) | 2022-05-20 | 2022-05-20 | Speed measuring device and method for belt conveyor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114873185B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4582192A (en) * | 1984-10-26 | 1986-04-15 | Lars Helmersson | Conveyor with twin belt synchronizing mechanism |
| US20090166158A1 (en) * | 2006-08-03 | 2009-07-02 | Dietmar Stoiber | Revolving Device for a Conveyor Chain or a Conveyor Belt |
| 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 |
-
2022
- 2022-05-20 CN CN202210548590.6A patent/CN114873185B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4582192A (en) * | 1984-10-26 | 1986-04-15 | Lars Helmersson | Conveyor with twin belt synchronizing mechanism |
| US20090166158A1 (en) * | 2006-08-03 | 2009-07-02 | Dietmar Stoiber | Revolving Device for a Conveyor Chain or a Conveyor Belt |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114873185B (en) | 2023-06-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107421833B (en) | Self-detection device and detection method for lifting container lining plate | |
| CN203644404U (en) | Device for detecting thrusting resistance of nuclear power reactor internal member control rod guide cylinder component | |
| CN109371837B (en) | Stay cable damper capable of testing cable force | |
| CN201307067Y (en) | Test platform for oil pressure vibration damper | |
| US20150308242A1 (en) | Method for monitoring and optimizing the performance of a well pumping system | |
| CN101968398B (en) | Dynamic property testing platform for movable mass simply-supported beam | |
| CN114873185A (en) | Speed measuring device and method for belt conveyor | |
| CN104278984B (en) | Micrometric displacement indicator for beam pumper | |
| CN101038706A (en) | Drive apparatus for pendulum | |
| CN2821575Y (en) | Velometer | |
| CN107796715B (en) | Test device for detecting bidirectional instantaneous impact resistance of coating | |
| CN106365044A (en) | Gravity balance suspension following device and system and work method of system | |
| CN212321330U (en) | Cable winding life test device | |
| CN216711462U (en) | Novel high-precision winch sensor | |
| CN114803853B (en) | Hoisting device with prevent heavy object swing function | |
| CN102424316A (en) | Rotating movement detection device for hoist bucket of construction vertical shaft | |
| CN103850644A (en) | Climbing assisting device | |
| CN201277876Y (en) | Mechanical detection mechanism for weighted hammer type level meter | |
| CN216737358U (en) | Steel wire rope slipping fault alarm device of endless rope winch | |
| CN215263274U (en) | Device for detecting glass curtain wall | |
| CN113187714A (en) | Liquid pump device with liquid level detection function | |
| CN201319036Y (en) | Belt-speed detecting device used in mechanical equipment for wood-based panels | |
| CN210128811U (en) | Distance measuring device suitable for drop impact test | |
| CN207131381U (en) | Self-balancing intelligent oil pumping machine | |
| CN209443372U (en) | A kind of suspension cable damper for taking into account cable tension test |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Cao Feng Inventor after: Peng Guangyan Inventor after: Yang Longming Inventor before: Yuan Zhentao Inventor before: Li Zhancheng Inventor before: Yang Longming |
|
| CB03 | Change of inventor or designer information |