CN213298718U - Belt pulley tensioning device - Google Patents
Belt pulley tensioning device Download PDFInfo
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- CN213298718U CN213298718U CN202021815558.2U CN202021815558U CN213298718U CN 213298718 U CN213298718 U CN 213298718U CN 202021815558 U CN202021815558 U CN 202021815558U CN 213298718 U CN213298718 U CN 213298718U
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- 238000001514 detection method Methods 0.000 claims abstract description 13
- 238000005070 sampling Methods 0.000 claims abstract description 3
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- 230000005540 biological transmission Effects 0.000 description 18
- 238000000034 method Methods 0.000 description 7
- 239000003814 drug Substances 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
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Abstract
The application relates to a belt pulley tensioning device, which comprises a fixed rod, wherein a sliding groove is formed in the fixed rod; the moving rod is connected in the sliding groove in a sliding manner; the tensioning wheel is rotatably connected to the end part of the movable rod exposed out of the sliding groove; and an alert circuit, the alert circuit comprising: the pressure detection unit is used for acquiring the pressure applied to the tensioning wheel and converting the pressure into a pressure signal; the comparison unit is connected to the output end of the sampling circuit and used for receiving the pressure signal output by the pressure detection unit, comparing the pressure signal with an input reference signal Verf, and outputting a high-level signal when the pressure signal value is higher than the reference signal value; the control end of the control unit is connected to the signal output end of the comparison unit and responds to the high-level signal output by the comparison unit; and the alarm unit is connected with the output end of the control unit and used for sending out an alarm signal. This application has the effect of the elasticity degree of in time discovering the drive belt.
Description
Technical Field
The application relates to the field of pharmaceutical equipment, in particular to a belt pulley tensioning device.
Background
In the pharmacy process, can use dry granulator to process into graininess with powder usually, dry granulator passes through the motor and drives the drive belt with the moment of torsion transmission to the auger on, and the auger is released the medicine granule from the granulator, but after long-term the use, the drive belt can relax gradually, causes to skid between drive belt and the driving roller, and the medicine granule forms in the auger and piles up.
In the correlation technique, usually install the roller that plays the tensioning effect additional on the drive belt, along with the effect that can play the tensioning like this, but often after the drive belt relaxes, cause that the medicine can discover after piling up, and difficult discovery again behind the rate of tension of adjustment drive belt whether the drive belt is tight state, does not conform to user's operation requirement.
SUMMERY OF THE UTILITY MODEL
In order to discover the degree of tightness of the transmission belt in time, the application provides a belt pulley tensioning device.
The application provides a belt pulley overspeed device tensioner, its technical scheme that adopts as follows:
a pulley tensioner comprising:
a fixed link having a sliding groove formed thereon;
the moving rod is connected in the sliding groove in a sliding manner;
the tensioning wheel is rotatably connected to the end part of the movable rod exposed out of the sliding groove; and
an alert circuit, the alert circuit comprising:
the pressure detection unit is used for acquiring the pressure applied to the tensioning wheel and converting the pressure into a pressure signal;
the comparison unit is connected to the output end of the sampling circuit and used for receiving the pressure signal output by the pressure detection unit, comparing the pressure signal with an input reference signal Verf, and outputting a high-level signal when the pressure signal value is higher than the reference signal value;
the control end of the control unit is connected to the signal output end of the comparison unit and responds to the high-level signal output by the comparison unit; and
and the alarm unit is connected with the output end of the control unit and used for sending out an alarm signal.
By adopting the technical scheme, the tensioning roller is abutted against the transmission belt to tension the transmission belt, and the sliding rod is slidably connected in the sliding groove on the fixed rod, so that the distance of the tensioning wheel extending out of the sliding groove can be conveniently adjusted according to the tightness degree of the transmission belt; the pressure detection unit can detect the force of the tension wheel abutting against the transmission belt to form an electric signal which is transmitted to the comparison unit, when the voltage value of the pressure detection unit is greater than or equal to the voltage value of the reference signal Verf, the output end of the comparison unit outputs a low level, the control unit does not act, and the alarm unit does not send an alarm signal; when the voltage value output by the pressure detection unit is smaller than the voltage value of the reference signal Verf, the output end of the comparison unit outputs high level, and the control unit acts and informs the alarm unit to send an alarm signal, so that the problem that the conveying belt is too loose can be found in time.
Preferably, the method further comprises the following steps:
the adjusting block is connected in the sliding groove in a sliding mode and is abutted to the end, away from the tension wheel, of the moving rod;
the shell of the hollow structure is fixedly connected to the fixed rod;
a worm gear disposed inside the housing;
the worm is arranged in the shell and is meshed and connected with the worm; and
and the screw rod penetrates through two ends of the shell and is in threaded connection with the worm wheel, and the upper end part of the screw rod is in rotary connection with the adjusting block.
Through adopting above-mentioned technical scheme, the worm rotates, and drive worm wheel rotates, and worm wheel rotates and can drive the lead screw and rise or descend and remove to the accessible regulating block promotes the slide bar and rises, thereby can realize the regulatory action that rises to the slide bar.
Preferably, a handle for driving the worm to rotate is detachably connected to the worm.
Through adopting above-mentioned technical scheme, the setting of handle helps the rotation of drive worm, is convenient for accommodate the rising or the decline of lead screw and removes.
Preferably, the pressure detection unit includes a pressure sensor fixed to an end of the sliding groove, and an end of the moving rod abuts against the pressure sensor.
Through adopting above-mentioned technical scheme, pressure sensor establishes on the regulating block and butt to the lower tip of slide bar, can make on the take-up pulley received power transmit to pressure sensor to can make pressure sensor receive the dynamics of take-up pulley butt on the drive belt, and convert into the signal of telecommunication, be convenient for to the drive belt too relax make the judgement.
Preferably, the comparison unit comprises a comparator IC, the non-inverting input of which is connected to the signal output of the pressure sensor and the inverting input of which is connected to the reference signal Verf.
By adopting the technical scheme, the comparator IC can play a role in judging the voltage values of the equidirectional input end and the reverse input end, the voltage value of the equidirectional input end is higher than that of the reverse input end, the output end corresponding to the comparator IC outputs a high level, and otherwise, the output end outputs a low level.
Preferably, the control unit comprises a triode V and a relay KA, a base electrode of the triode V is connected to an output end of the comparison unit, a collector electrode of the triode V is connected to a power supply through a coil of the relay KA, and an emitter electrode of the triode V is grounded through a current-limiting resistor R; and a normally open contact of the relay KA is used for connecting and disconnecting the alarm unit.
By adopting the technical scheme, the base electrode of the triode V is connected to the output end of the comparison unit, and the triode V can be conducted after the output end of the comparison unit outputs high level, so that the coil of the relay KA can be electrified, the normally open contact of the relay KA is attracted after the coil of the relay KA is electrified, and the alarm unit can be electrified and send an alarm signal.
Preferably, the alarm unit comprises a buzzer HA and an alarm lamp HD which are connected in parallel, one end of the alarm unit is connected to a power supply, and the other end of the alarm unit is grounded through a normally open contact of a relay KA.
Through adopting above-mentioned technical scheme, the buzzer HA and the warning light HD of warning unit communicate with the power after the normally open contact of relay KA is closed, can send the reputation and report an emergency and ask for help or increased vigilance information, remind the staff in time to adjust the rate of tension of drive belt.
Preferably, the alarm unit is connected in series with a manual switch SA.
Through adopting above-mentioned technical scheme, manual switch SA's setting can be with the manual disconnection of warning circuit, can avoid warning lamp HD and bee calling organ HA to continuously send out alarm information in maintenance or adjustment process, HAs higher practicality.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the alarm circuit is arranged, the force of the tension wheel abutting against the transmission belt can be detected in real time, when the tension force of the transmission belt is too small or the transmission belt is in a loose state after being used for a long time, audible and visual alarm information can be sent out, a worker is reminded of adjusting the tension degree of the transmission belt in time, and medicine materials are prevented from being accumulated in the auger;
2. the worm gear elevating gear who sets up on the dead lever, the extension length to the take-up pulley that can be convenient makes the adjustment to in keeping the great rate of tension of drive belt, improve the operating experience of staff in the transfer process.
Drawings
Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.
Fig. 2 is a schematic sectional view of a housing portion in an embodiment of the present application.
Fig. 3 is a schematic diagram of an alarm circuit according to an embodiment of the present application.
Description of reference numerals: 11. fixing the rod; 111. a sliding groove; 112. fixing the ear; 12. a travel bar; 13. a tension wheel; 21. a pressure detection unit; 22. a comparison unit; 23. a control unit; 24. an alarm unit; 31. an adjusting block; 32. a housing; 33. a worm gear; 34. a worm; 35. a screw rod; 36. a handle.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses a belt pulley overspeed device tensioner. Referring to fig. 1, it includes a fixing rod 11, a moving rod 12, and a tension wheel 13. The fixing rod 11 is of a rectangular structure, a long-strip-shaped sliding groove 111 is formed in the fixing rod 11, the long side edge of the sliding groove 111 is parallel to the long side edge of the fixing rod 11, a fixing lug 112 is fixedly connected to the lower end portion of the fixing rod 11, and a fixing hole is formed in the fixing lug 112 and used for penetrating a long nail or a bolt to fix the fixing lug.
The cross section of the moving bar 12 is the same as the opening shape of the sliding groove 111, and the length of the moving bar 12 is longer than that of the sliding groove 111 and is slidably connected in the sliding groove 111 of the fixing bar 11. The tension pulley 13 is rotatably connected to the end of the moving rod 12 exposed out of the sliding groove 111, and the axis of the tension pulley 13 is perpendicular to the long side of the moving rod 12.
The fixed rod 11 is fixedly connected to a panel right below the transmission belt and is abutted against the lower moving surface of the rotating belt through a tension wheel 13 so as to tension the transmission belt.
Referring to fig. 1 and 2, the fixing rod 11 is further provided with a lifting device for driving the moving rod 12 to move, and the lifting device comprises a screw 35, an adjusting block 31, a worm wheel 33, a worm 34 and a housing 32. Wherein, the shell 32 is fixedly connected with the fixed rod 11, the worm wheel 33 and the worm 34 are both arranged inside the shell 32, and the worm wheel 33 is meshed with the worm 34; the end part of the worm 34 is detachably connected with a handle 36 which can be used for driving the worm to rotate, the handle 36 is in a Z-shaped structure, and the end part of the handle is provided with a non-circular lug; the casing 32 is provided with a through hole exposing the end of the worm 34, the end of the worm 34 is provided with a clamping groove matched with the end of the handle 36, and the handle 36 can be clamped into the groove at the end of the worm 34 through the through hole of the casing 32 to drive the worm 34 to rotate.
The screw rod 35 penetrates through the upper and lower end surfaces of the housing 32 and is in threaded connection with the worm wheel 33 in the housing 32, the upper end part of the screw rod 35 is rotatably connected with the adjusting block 31, and the adjusting block 31 is connected into the sliding groove 111 in a sliding manner and is abutted to the end part of the moving rod 12 in the sliding groove 111.
The worm 34 is rotated by the handle 36, the worm 34 drives the worm wheel 33 to rotate and drives the screw rod 35 to rotate, so that the screw rod 35 can move up or down along the axis of the worm wheel 33, the screw rod 35 drives the adjusting block 31 to move in the sliding groove 111, the movable rod 12 can be abutted and extended out along the sliding groove 111, the tension pulley 13 is abutted to the transmission belt, the screw rod 35 descends, and the tension pulley 13 and the movable rod 12 can move down in the sliding groove 111 through self gravity and pressure of the transmission belt on the tension pulley 13 and the movable rod 12.
In order to be able to send out a warning message in time when the sag of the drive belt exceeds a critical point, a warning circuit is further included, which, referring to fig. 3, comprises a pressure detection unit 21, a comparison unit 22, a control unit 23 and a warning unit 24.
The pressure detecting unit 21 includes a pressure sensor fixed to the upper end surface of the adjusting block 31, and the end of the moving rod 12 in the sliding groove 111 abuts against the pressure sensor, so that the pressure sensor receives the pressure on the belt and the tension pulley 13 through the moving rod 12 to determine whether the belt is too loose. The pressure sensor can convert the pressure signal into an analog signal of 0-5V and output the analog signal to the input end of the comparison unit 22.
The comparison unit 22 includes a comparator IC, which may be an LM339 chip, with a reference signal voltage Verf connected to a pin of a same-direction Input1+, and a pin of an opposite-direction Input 1-connected to a signal output terminal of the pressure sensor. When the voltage signal value output by the pressure sensor is greater than or equal to the reference signal voltage Verf, the output terminal output1 pin of the LM339 chip outputs a low level signal, otherwise, a high level signal is output, and the high level signal is output to the control unit.
The control unit 23 comprises an NPN-type triode V and an intermediate relay KA, wherein a base electrode of the triode V is connected to a signal output end of the LM339 chip, a collector electrode of the triode V is connected to a power supply through a coil of the intermediate relay KA, and an emitter electrode of the triode V is grounded through a current-limiting resistor R; the normally open contact of the intermediate relay KA is connected in series to the alarm unit 24 for connecting or disconnecting the alarm unit 24.
The alarm unit 24 includes a buzzer HA and an alarm lamp HD connected in parallel, one end of a parallel circuit formed by the buzzer HA and the alarm lamp HD is connected to a power supply through a normally open contact of the series intermediate relay KA, and the other end is grounded. After the normally open contact of the intermediate relay KA is closed, the buzzer HA and the warning lamp HD are connected with the power supply, acousto-optic warning information is sent out, and a worker is reminded of adjusting the tension degree of the transmission belt in time. The alarm unit 24 is also connected in series with a manual switch SA, the manual switch SA can be a self-holding button switch or a self-holding knob switch, the manual switch SA can manually disconnect the alarm circuit, the alarm lamp HD and the buzzer HA can be prevented from continuously sending alarm information in the process of maintenance or adjustment, and the practicability is high.
The implementation principle of the embodiment of the application is as follows: the tension pulley 13 is abutted against the lower moving surface of the transmission belt, the pressure between the tension pulley 13 and the transmission belt is converted into an analog voltage signal through the pressure sensor, the voltage signal output by the pressure sensor is compared with the reference signal Verf voltage through the comparator IC, and after the voltage signal value output by the pressure sensor is smaller than the reference signal Verf voltage value, the comparator IC outputs a high level signal, so that the control unit 23 responds and the alarm unit 24 is switched on, the alarm lamp HD and the buzzer HA send out acousto-optic alarm information, and a worker is reminded to adjust the tension degree of the transmission belt in time.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. A pulley tensioner, comprising:
a fixed rod (11) which is provided with a sliding groove (111);
a moving rod (12) which is connected in a sliding way in the sliding groove (111);
a tension pulley (13) rotatably connected to the end of the movable rod (12) exposed out of the sliding groove (111); and
an alert circuit, the alert circuit comprising:
the pressure detection unit (21) is used for acquiring the pressure applied to the tensioning wheel (13) and converting the pressure into a pressure signal;
the comparison unit (22) is connected to the output end of the sampling circuit, is used for receiving the pressure signal output by the pressure detection unit (21), compares the pressure signal with an input reference signal Verf, and outputs a high-level signal when the pressure signal value is higher than the reference signal value;
a control unit (23), the control end of which is connected to the signal output end of the comparison unit (22) and responds to the high level signal output by the comparison unit (22); and
and the alarm unit (24) is connected to the output end of the control unit (23) and is used for sending out an alarm signal.
2. A pulley tensioner as set forth in claim 1, further comprising:
the adjusting block (31) is connected in the sliding groove (111) in a sliding mode and is abutted to the end portion, away from the tensioning wheel (13), of the moving rod (12);
a hollow shell (32) fixedly connected to the fixing rod (11);
a worm wheel (33) provided inside the housing (32);
the worm (34) is arranged inside the shell (32) and is meshed and connected with the worm (34); and
and the screw rod (35) penetrates through two ends of the shell (32) and is in threaded connection with the worm wheel (33), and the upper end part of the screw rod is in rotary connection with the adjusting block (31).
3. A pulley tensioner according to claim 2, characterised in that: the worm (34) is detachably connected with a handle (36) used for driving the worm (34) to rotate.
4. A pulley tensioner according to claim 1, characterised in that: the pressure detection unit (21) comprises a pressure sensor which is fixedly connected with the end part in the sliding groove (111), and the end part of the movable rod (12) is abutted to the pressure sensor.
5. A pulley tensioner according to claim 4, characterised in that: the comparison unit (22) comprises a comparator IC, the inverting input of which is connected to the signal output of the pressure sensor and the inverting input of which is connected to the reference signal Verf.
6. A pulley tensioner according to claim 1, characterised in that: the control unit (23) comprises a triode V and a relay KA, the base electrode of the triode V is connected to the output end of the comparison unit (22), the collector electrode of the triode V is connected to a power supply through a coil of the relay KA, and the emitter electrode of the triode V is grounded through a current limiting resistor R; and a normally open contact of the relay KA is used for connecting and disconnecting the alarm unit (24).
7. A pulley tensioner according to claim 6, characterised in that: the alarm unit (24) comprises a buzzer HA and an alarm lamp HD which are connected in parallel, one end of the alarm unit (24) is connected to a power supply, and the other end of the alarm unit is grounded through a normally open contact of a relay KA.
8. A pulley tensioner according to claim 6, characterised in that: the alarm unit (24) is connected with a manual switch SA in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021815558.2U CN213298718U (en) | 2020-08-26 | 2020-08-26 | Belt pulley tensioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021815558.2U CN213298718U (en) | 2020-08-26 | 2020-08-26 | Belt pulley tensioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213298718U true CN213298718U (en) | 2021-05-28 |
Family
ID=76027448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021815558.2U Expired - Fee Related CN213298718U (en) | 2020-08-26 | 2020-08-26 | Belt pulley tensioning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213298718U (en) |
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2020
- 2020-08-26 CN CN202021815558.2U patent/CN213298718U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210528 |