CN106931110B - Chain tensioning adjustment mechanism - Google Patents
Chain tensioning adjustment mechanism Download PDFInfo
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- CN106931110B CN106931110B CN201710299983.7A CN201710299983A CN106931110B CN 106931110 B CN106931110 B CN 106931110B CN 201710299983 A CN201710299983 A CN 201710299983A CN 106931110 B CN106931110 B CN 106931110B
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- drive motor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
- F16H2007/0802—Actuators for final output members
- F16H2007/0823—Electric actuators
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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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
The invention relates to a chain tensioning and adjusting mechanism which comprises a shell, a direct-drive motor, a drive controller, a transmission device, a transmission screw rod, a first joint device, a chain and a second joint device, wherein the direct-drive motor is arranged on the shell; the direct-drive motor is arranged in the shell, the drive controller is arranged at the upper end of the shell, and the drive controller is connected with the direct-drive motor through a circuit; the outer side of the shell is provided with a supporting plate, the transmission device is arranged on one side of the supporting plate, which is close to the shell, and the direct drive motor is connected with the transmission device; one end of the transmission screw rod penetrates through the supporting plate to be connected with the output end of the transmission device, and the other end of the transmission screw rod is connected with one end of the first joint device; the other end of the first joint device is connected with the second joint device through a chain; the connection part of the first joint device and the chain is provided with a tension sensor, and the tension sensor is connected with the driving controller through a circuit. The invention realizes automatic tensioning of the chain, improves the driving precision of the chain, prevents the chain from falling off, adapts to severe working environment and has high reliability coefficient.
Description
Technical Field
The invention relates to the technical field of tensioning adjustment, in particular to a chain tensioning adjustment mechanism.
Background
The chain can produce wearing and tearing when continuously working, and this kind of wearing and tearing aggravation can make the chain produce the lax on preliminary tensioning basis, and the tensioning force of chain also can reduce thereupon, influences the operating condition of chain even whole system. For the occasion that the chain driving precision requirement is very high, the change of the chain spacing caused by some tiny chain abrasion which cannot be distinguished by naked eyes can influence the driving precision of the whole system, even if the chain is found to be loose, the chain can only be stopped, the original tensioning device can be adjusted manually to be tensioned again, the traditional chain tensioning device can not realize automatic and accurate tensioning under the starting working condition, the primary tensioning can only be carried out before the chain starts working, the precision is very low, and the chain is properly manually adjusted after the tightness condition is observed manually during working. For some occasions which cannot be frequently shut down and maintained or have high requirements on the tensioning degree of the chain, no device is available for monitoring the tensioning force of the chain in real time and setting the tensioning force for the chain under the continuous working condition.
The automatic chain tensioning adjusting device in the prior art comprises a machine base, wherein a rocker arm is arranged on the machine base, one end of the rocker arm is connected with a sprocket movable shaft, and a sprocket with a bearing is arranged on the sprocket movable shaft; the other end of the rocker arm is meshed with a flat bevel gear with a straight tooth gear arranged in the machine base, and a compression spring is arranged on the straight tooth rack transmission rod. The device carries out minute automatically regulated to the reaction force of take-up pulley after according to the chain tensioning, and the tensioning force passes through the gear and transmits compression spring, and the spring receives extrusion storage kinetic energy, but when the chain takes place to relax, compression spring release energy makes the chain keep certain tension. The device has the following defects: firstly, the device outputs the tensioning force of the chain only by a spring, cannot adapt to a severe working environment, has insufficient reliability coefficient, cannot feed back the specific tensioning force value to an operator in real time, only can be judged subjectively, and the tensioning force output is nonlinear along with the change of the length of the spring, so that the tensioning force with certain precision cannot be provided for the chain; the tensioning mode of the device is similar to the traditional tensioning wheel for applying pressure to the chain, the chain generates wrap angles at the tensioning chain wheel, the pin shafts of the chain can relatively rotate the chain plates when passing through the wrap angles, the abrasion rate of the chain is increased, the wrap angles are larger and larger along with the abrasion increase, and vicious circle is formed when the relative rotation angles are larger; the device transmission device has too many kinematic pairs, can consume the energy stored by the spring, and the automatic tensioning force energy source is too simple.
Disclosure of Invention
The invention aims to provide a chain tensioning and adjusting mechanism, which aims to solve the technical problems that: the existing tensioning adjusting device cannot adapt to severe working environments, is insufficient in reliability coefficient, and cannot realize automatic tensioning adjustment.
The technical scheme for solving the technical problems is as follows: a chain tensioning and adjusting mechanism comprises a shell, a direct-drive motor, a drive controller, a transmission device, a transmission screw rod, a first joint device, a chain and a second joint device;
the direct drive motor is arranged in the shell, the drive controller is arranged at the upper end of the shell, and the drive controller is connected with the direct drive motor through a circuit; the outer side of the shell is provided with a supporting plate, the transmission device is arranged on one side, close to the shell, of the supporting plate, and an output shaft of the direct-drive motor is connected with an input end of the transmission device;
one end of the transmission screw rod penetrates through the supporting plate to be connected with the output end of the transmission device, and the other end of the transmission screw rod is connected with one end of the first joint device; the other end of the first joint device is connected with the second joint device through a chain;
a tension sensor is arranged at the joint of the first joint device and the chain, and the tension sensor is connected with a driving controller through a circuit; the tension sensor senses the tension of the chain in real time, generates a tension signal, transmits the tension signal to the driving controller, processes and analyzes the tension signal, and when the tension of the chain is lower than a set value, the driving controller sends a driving signal to the direct-drive motor, and the direct-drive motor drives the chain to be tensioned through the transmission device, the transmission screw rod and the first connector device.
The beneficial effects of the invention are as follows: the tension sensor, the driving controller and the direct-drive motor are coordinated to operate, so that automatic induction tension can be realized, the direct-drive motor drives the chain to be tensioned through the transmission device, the transmission screw rod and the first connector device, automatic tensioning of the chain is realized, the driving precision of the chain is improved, the chain is prevented from falling off, and the driving equipment is protected; the device is convenient to install and maintain, easy to produce and manufacture, suitable for severe working environments and high in reliability coefficient.
On the basis of the technical scheme, the invention can be improved as follows.
Further, the driving controller records and analyzes the rotation data of the output shaft of the direct-drive motor to obtain the data of chain elongation and display the data.
Further, a threaded hole matched with the transmission screw rod is formed in the position, corresponding to the transmission screw rod, of the shell, and the transmission screw rod penetrates through the supporting plate and the output end of the transmission device to extend into the threaded hole; the shell is fixed with the direct-drive motor through bolts.
The beneficial effects of adopting the further scheme are as follows: the transmission screw rod stretches into the threaded hole, can position the transmission screw rod, and supports the rotation of the transmission screw rod.
Further, the lower extreme of casing is provided with the opening, the opening part is provided with the closure plate, closure plate passes through bolt and casing fixed connection.
The beneficial effects of adopting the further scheme are as follows: the sealing plate is convenient for sealing the shell, ensures the stable operation of the direct-drive motor, and prolongs the service life.
Further, the upper end and the lower end of the shell are respectively provided with a connecting lug which is integrally formed with the shell; the upper portion of backup pad pass through the bolt with the engaging lug of casing upper end corresponds to be connected, the lower part of backup pad pass through the bolt with the engaging lug of casing lower extreme corresponds to be connected.
The beneficial effects of adopting the further scheme are as follows: the coupling lug is convenient for the casing be connected with the backup pad, promotes connection stability.
Further, the transmission device comprises a first gear, a second gear and a third gear, wherein the first gear, the second gear and the third gear are sequentially meshed and are positioned on the side wall of the supporting plate; the first gear is sleeved on the output shaft of the direct-drive motor, and a gear retainer ring is arranged at the joint of the first gear and the output shaft of the direct-drive motor; the third gear is sleeved on the transmission screw rod; the output shaft of the direct drive motor drives the first gear to rotate, the first gear, the second gear and the third gear are linked, and the third gear drives the transmission screw rod to rotate.
The beneficial effects of adopting the further scheme are as follows: the first gear, the second gear and the third gear are coordinated to operate, the direct-drive motor drives the transmission screw rod to rotate through the first gear, the second gear and the third gear, the transmission efficiency is high and stable, and the tensioning efficiency is improved.
Further, an orientation device is fixedly arranged on one side, far away from the shell, of the support plate, a through hole is formed in the orientation device, and the transmission screw rod penetrates through the through hole; the aperture of the through hole is gradually increased from one end of the support plate far away to one end of the support plate close to the support plate, and the aperture of one end of the support plate far away is matched with the outer diameter of the transmission screw rod.
The beneficial effects of adopting the further scheme are as follows: the directional device can limit the unidirectional movement of the transmission screw rod, prevent the transmission screw rod from doing reverse movement under the action of chain tension, and effectively protect the direct-drive motor.
Further, the through hole comprises a plurality of connecting holes, each connecting hole is cylindrical, and the aperture of each connecting hole gradually decreases from one end close to the supporting plate to the other end; the connecting holes are sequentially communicated, and the aperture of the connecting hole close to one end of the supporting plate is smaller than that of the connecting hole far away from one side of the supporting plate.
Further, one end of the inner wall of each connecting hole far away from the supporting plate is provided with an annular chamfering ring, and the chamfering ring is communicated with the cylindrical structure of the corresponding connecting hole; each chamfering ring is connected with the edge of the corresponding connecting hole cylindrical structure in an inward inclination angle.
The beneficial effects of adopting the further scheme are as follows: the plurality of connecting holes and the chamfer rings can limit the unidirectional movement of the transmission screw rod, prevent the transmission screw rod from doing reverse movement under the action of chain tension, and effectively protect the direct-drive motor.
Further, the first joint device comprises a first joint body and a fastening assembly, one end of the first joint body, which is close to the transmission screw rod, is of a cylinder structure, and the transmission screw rod extends into the cylinder structure of the first joint body and is in threaded connection with the first joint body; one end of the first joint body, which is far away from the transmission screw rod, is movably connected with the fastening assembly, and the end head of the first joint body is connected with the chain through the tension sensor.
The beneficial effects of adopting the further scheme are as follows: the first connector body is connected with the chain through the tension sensor, so that the tension sensor can sense tension conveniently.
Further, the second joint device comprises a second joint body, a threaded rod and a cross rod, one end of the second joint body is movably connected with the chain, and the other end of the second joint body is movably connected with the threaded rod; the middle part of the cross rod is sleeved on the threaded rod, is in threaded connection with the threaded rod, and is vertical to the threaded rod; the threaded rod is provided with a double nut for fastening the cross rod, and the double nut is positioned on one side of the cross rod away from the second joint body.
The beneficial effects of adopting the further scheme are as follows: the double nuts can fix the cross rod, can also further tension or loosen the regulation of degree to the chain, promotes the convenience of chain regulation.
Drawings
FIG. 1 is a front view of a chain tension adjustment mechanism of the present invention;
FIG. 2 is a schematic view of a chain tension adjusting mechanism according to the present invention;
FIG. 3 is a block diagram of a direct drive motor, drive controller and tension sensor of the present invention;
FIG. 4 is a front view of the transmission, support plate and drive screw of the present invention;
FIG. 5 is a schematic view of the structure of the orientation apparatus of the present invention;
FIG. 6 is a side view of the attachment hole of the present invention;
fig. 7 is an enlarged view of a portion a of fig. 6;
FIG. 8 is a front view of the first joint device and chain of the present invention;
fig. 9 is a schematic view of the structure of the second joint device and the chain of the present invention.
In the drawings, the list of components represented by the various numbers is as follows:
1. the shell, 101, the threaded hole, 102, the closing plate, 103 and the connecting lug;
2. a direct drive motor 3, a drive controller;
4. a transmission device 401, a first gear 402, a second gear 403, a third gear 404 and a gear retainer ring; 405. the device comprises a directional device 406, a through hole 407, a connecting hole 408, a chamfer ring 409 and an inner dip angle;
5. a transmission screw rod; 6. first connector means 601, first connector body, 602, fastening assembly;
7. a chain; 8. second connector device 801, second connector body 802, threaded rod 803, cross rod 804, double nuts;
9. the support plate, 10, the tension sensor.
Detailed Description
The principles and features of the present invention are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention.
As shown in fig. 1 to 3, a chain tension adjusting mechanism comprises a housing 1, a direct drive motor 2, a drive controller 3, a transmission device 4, a transmission screw 5, a first joint device 6, a chain 7 and a second joint device 8;
the shell 1 is square, the opening of the shell is downward, the direct-drive motor 2 is arranged in the shell 1, the drive controller 3 is arranged at the upper end of the shell 1, and the drive controller 3 is connected with the direct-drive motor 2 through a circuit; the outer side of the shell 1 is provided with a supporting plate 9, the transmission device 4 is arranged on one side, close to the shell 1, of the supporting plate 9, and an output shaft of the direct-drive motor 2 is connected with an input end of the transmission device 4;
one end of the transmission screw rod 5 penetrates through the supporting plate 9 to be connected with the output end of the transmission device 4, and the other end of the transmission screw rod is connected with one end of the first joint device 6; the other end of the first joint device 6 is connected with a second joint device 8 through a chain 7;
a tension sensor 10 is arranged at the joint of the first joint device 6 and the chain 7, and the tension sensor 10 is connected with the driving controller 3 through a circuit; the tension sensor 10 senses the tension of the chain 7 in real time, generates a tension signal and transmits the tension signal to the driving controller 3, the driving controller 3 processes and analyzes the tension signal, when the tension of the chain 7 is lower than a set value, a control signal is generated and transmitted to the direct-drive motor 2, and the direct-drive motor 2 drives the chain 7 to be tensioned through the transmission device 4, the transmission screw 5 and the first connector device 6;
the tension sensor 10, the driving controller 3 and the direct-drive motor 2 are coordinated to operate, so that automatic induction tension can be realized, the direct-drive motor 2 drives the chain 7 to be tensioned through the transmission device 4, the transmission screw 5 and the first joint device 6, automatic tensioning of the chain 7 is realized, the driving precision of the chain 7 is improved, the chain 7 is prevented from falling off, and the driving equipment is protected; the device is convenient to install and maintain, easy to produce and manufacture, suitable for severe working environments and high in reliability coefficient.
In the above embodiment, the driving controller 3 records and analyzes the rotation data of the output shaft of the direct-drive motor 2, and obtains and displays the data of the elongation of the chain 7.
The data of the elongation of the chain 7 is used for judging whether the abrasion of the chain 7 exceeds the design rule, so that whether the chain 7 needs to be replaced or not can be judged under the condition that the peripheral structure is not dismantled, the occurrence of accidents is predicted, and the safe operation of the mechanism is ensured.
In the above embodiment, a threaded hole 101 matched with the transmission screw 5 is formed in the position, corresponding to the transmission screw 5, of the housing 1, and the transmission screw 5 passes through the support plate 9 and the output end of the transmission device 4 to extend into the threaded hole 101; the shell 1 is used for fixing the direct-drive motor 2 through bolts; the transmission screw rod 5 extends into the threaded hole 101, can position the transmission screw rod 5, and supports the transmission screw rod 5 to rotate.
In the above embodiment, an opening is provided at the lower end of the housing 1, a sealing plate 102 is provided at the opening, and the sealing plate 102 is fixedly connected with the housing 1 through a bolt; the sealing plate 102 is convenient for sealing the shell 1, ensures the stable operation of the direct-drive motor 2 and prolongs the service life.
In the above embodiment, the upper end and the lower end of the housing 1 are provided with the connecting lugs 103 integrally formed therewith; the upper part of the supporting plate 9 is correspondingly connected with the connecting lug 103 at the upper end of the shell 1 through a bolt, and the lower part of the supporting plate 9 is correspondingly connected with the connecting lug 103 at the lower end of the shell 1 through a bolt; the upper end of casing 1 is provided with two engaging lugs 103, and its lower extreme is provided with two engaging lugs 103, and engaging lugs 103 are convenient for casing 1 and backup pad 9 to be connected, promote connection stability.
In the above embodiment, as shown in fig. 4, the transmission device 4 includes a first gear 401, a second gear 402, and a third gear 403, where the first gear 401, the second gear 402, and the third gear 403 are sequentially meshed and are located on a side wall of the support plate 9; the first gear 401 is sleeved on the output shaft of the direct-drive motor 2, and a gear retainer ring 404 is arranged at the joint of the first gear and the output shaft of the direct-drive motor 2; the third gear 403 is sleeved on the transmission screw 5; the output shaft of the direct drive motor 2 drives the first gear 401 to rotate, the first gear 401, the second gear 402 and the third gear 403 are linked, and the third gear 403 drives the transmission screw 5 to rotate.
The first gear 401, the second gear 402 and the third gear 403 are coordinated to operate, the direct-drive motor 2 drives the transmission screw 5 to rotate through the first gear 401, the second gear 402 and the third gear 403, the transmission efficiency is high and stable, and the tensioning efficiency is improved.
In the above embodiment, as shown in fig. 5, an orientation device 405 is fixedly disposed on a side of the support plate 9 away from the housing 1, a through hole 406 is disposed in the orientation device 405, and the transmission screw 5 passes through the through hole 406; the aperture of the through hole 406 gradually increases from one end far away from the supporting plate 9 to one end close to the supporting plate 9, and the aperture of one end far away from the supporting plate 9 is matched with the outer diameter of the transmission screw 5.
The orientation device 405 can limit the unidirectional movement of the transmission screw 5, prevent the transmission screw 5 from doing reverse movement under the action of the tensile force of the chain 7, and effectively protect the direct-drive motor 2.
In the above embodiment, as shown in fig. 6 and 7, the through hole 406 includes a plurality of connection holes 407, each of the connection holes 407 is cylindrical, and each of the connection holes has a gradually decreasing aperture from one end near the support plate 9 to the other end; the plurality of connecting holes 407 are sequentially communicated, and the aperture of the connecting hole 407 near one end of the supporting plate 9 is smaller than that of the connecting hole 407 far away from one side of the supporting plate.
In the above embodiment, one end of the inner wall of each connecting hole 407 away from the supporting plate 9 is provided with a ring-shaped chamfering ring 408, and the chamfering ring 408 is communicated with the cylindrical structure of the corresponding connecting hole 407; each chamfer ring 408 is connected at an inward inclination angle 409 to the edge of its corresponding cylindrical structure of connecting hole 407.
The plurality of connecting holes 407 and the chamfer rings 408 can limit the unidirectional movement of the transmission screw rod 5, prevent the transmission screw rod 5 from doing reverse movement under the action of the tensile force of the chain 7, and effectively protect the direct-drive motor 2.
In the above embodiment, as shown in fig. 8, the first connector device 6 includes a first connector body 601 and a fastening component 602, one end of the first connector body 601 near the transmission screw 5 is in a cylindrical structure, and the transmission screw 5 extends into the cylindrical structure of the first connector body 601 and is in threaded connection with the first connector body 601; one end of the first joint body 601 far away from the transmission screw rod 5 is movably connected with the fastening component 602, and the end head of the first joint body is connected with the chain 7 through the tension sensor 10; the fastening assembly 602 comprises a fixing piece and a nut, the first joint body 601 is sleeved in the middle of the fixing piece and movably connected with the fixing piece, and the nut is in threaded connection with the fixing piece to limit the first joint body 601; the first connector body 601 is connected with the chain 7 through the tension sensor 10, so that the tension sensor 10 can sense tension, and the sensing precision is improved.
In the above embodiment, as shown in fig. 9, the second joint device 8 includes a second joint body 801, a threaded rod 802, and a cross bar 803, where one end of the second joint body 801 is movably connected to the chain 7, and the other end is movably connected to the threaded rod 802; the middle part of the cross bar 803 is sleeved on the threaded rod 802, is in threaded connection with the threaded rod 802, and is vertical to the threaded rod 802; the threaded rod 802 is provided with a double nut 804 for fastening the cross bar 803, and the double nut 804 is located on the side of the cross bar 803 away from the second joint body 801.
The double nuts 804 can fix the cross bar 803 and can also further tension or loosen the chain 7, so that the convenience of adjusting the chain 7 is improved.
According to the technical scheme, after the shell 1, the direct-drive motor 2, the drive controller 3, the transmission device 4, the transmission screw rod 5, the first connector device 6, the chain 7 and the second connector device 8 are installed, preliminary tensioning is carried out through the double nuts 804, as the threaded rod 802 has a certain length, chain spacing adjustment can be carried out according to errors in design and installation of chain drive peripheral equipment, a set tensioning force value is input into the drive controller 3, the tension sensor 10 senses the tension of the chain 7 in real time, a tension signal is generated and transmitted to the drive controller 3, the drive controller 3 processes and analyzes the tension signal, when the tension of the chain 7 is lower than a set value, the drive controller 3 sends a drive signal to the direct-drive motor 2, and the direct-drive motor 2 drives the chain 7 to be tensioned through the transmission device 4, the transmission screw rod 5 and the first connector device 6; when the tension of the chain 7 reaches a set value, the driving controller 3 sends a stop signal to the direct-drive motor 2, and at the moment, the tensioning work before starting up is completed, so that the automatic tensioning of the chain can be realized; the staff can know the length of the chain stretching by checking the record of the working data of the direct-drive motor 2 on the drive controller 3, so as to judge whether the abrasion of the chain exceeds the design rule, judge whether the chain needs to be replaced or not under the condition of not dismantling the peripheral structure, and pre-judge the occurrence of accidents, thereby ensuring the safe operation of the whole mechanism.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (6)
1. A chain tensioning adjustment mechanism, characterized in that: comprises a shell (1), a direct drive motor (2), a drive controller (3), a transmission device (4), a transmission screw rod (5), a first joint device (6), a chain (7) and a second joint device (8);
the direct-drive motor (2) is arranged in the shell (1), the drive controller (3) is arranged at the upper end of the shell (1), and the drive controller (3) is connected with the direct-drive motor (2) through a circuit; the outer side of the shell (1) is provided with a supporting plate (9), the transmission device (4) is arranged on one side, close to the shell (1), of the supporting plate (9), and an output shaft of the direct-drive motor (2) is connected with an input end of the transmission device (4);
one end of the transmission screw rod (5) passes through the supporting plate (9) to be connected with the output end of the transmission device (4), and the other end of the transmission screw rod is connected with one end of the first joint device (6); the other end of the first joint device (6) is connected with a second joint device (8) through a chain (7);
a tension sensor (10) is arranged at the joint of the first joint device (6) and the chain (7), and the tension sensor (10) is connected with the driving controller (3) through a circuit; the tension sensor (10) senses the tension of the chain (7) in real time, generates a tension signal and transmits the tension signal to the driving controller (3), the driving controller (3) processes and analyzes the tension signal, when the tension of the chain (7) is lower than a set value, the driving controller (3) sends a driving signal to the direct-drive motor (2), and the direct-drive motor (2) drives the chain (7) to be tensioned through the transmission device (4), the transmission screw (5) and the first connector device (6);
a threaded hole (101) matched with the transmission screw rod (5) is formed in the position, corresponding to the transmission screw rod (5), of the shell (1), and the transmission screw rod (5) penetrates through the supporting plate (9) and the output end of the transmission device (4) to be matched with the threaded hole (101); the shell (1) is used for fixing the direct-drive motor (2) through bolts; the lower end of the shell (1) is provided with an opening, a sealing plate (102) is arranged at the opening, and the sealing plate (102) is fixedly connected with the shell (1) through bolts;
the upper end and the lower end of the shell (1) are respectively provided with a connecting lug (103) which is integrally formed with the shell; the upper part of the supporting plate (9) is correspondingly connected with the connecting lug (103) at the upper end of the shell (1) through a bolt, and the lower part of the supporting plate (9) is correspondingly connected with the connecting lug (103) at the lower end of the shell (1) through a bolt;
the transmission device (4) comprises a first gear (401), a second gear (402) and a third gear (403), wherein the first gear (401), the second gear (402) and the third gear (403) are sequentially meshed and are positioned on the side wall of the supporting plate (9); the first gear (401) is sleeved on the output shaft of the direct-drive motor (2), and a gear retainer ring (404) is arranged at the joint of the first gear and the output shaft of the direct-drive motor (2); the third gear (403) is sleeved on the transmission screw rod (5); an output shaft of the direct-drive motor (2) drives a first gear (401) to rotate, the first gear (401), a second gear (402) and a third gear (403) are linked, and the third gear (403) drives a transmission screw rod (5) to rotate;
a directional device (405) is fixedly arranged on one side, far away from the shell (1), of the supporting plate (9), a through hole (406) is formed in the directional device (405), and the transmission screw rod (5) penetrates through the through hole (406); the aperture of the through hole (406) is gradually increased from one end of the support plate (9) far away to one end of the support plate (9) near the support plate, and the aperture of one end of the support plate (9) far away is matched with the outer diameter of the transmission screw rod (5).
2. The chain tension adjustment mechanism of claim 1, wherein: the driving controller (3) records and analyzes the rotation data of the output shaft of the direct-drive motor (2) to obtain the data of the elongation of the chain (7) and display the data.
3. The chain tension adjustment mechanism of claim 1, wherein: the through hole (406) comprises a plurality of connecting holes (407), each connecting hole (407) is cylindrical, and the aperture of each connecting hole gradually decreases from one end close to the supporting plate (9) to the other end; the connecting holes (407) are sequentially communicated, and the pore diameters of the connecting holes (407) close to one end of the supporting plate (9) are smaller than those of the connecting holes (407) far away from one side of the supporting plate.
4. A chain tensioning adjustment mechanism according to claim 3, wherein: one end of the inner wall of each connecting hole (407) far away from the supporting plate (9) is provided with an annular chamfering ring (408), and the chamfering ring (408) is communicated with the cylindrical structure of the corresponding connecting hole (407); each chamfer ring (408) is connected with the edge of the cylindrical structure of the corresponding connecting hole (407) at an inner inclination angle (409).
5. A chain tensioning adjustment mechanism according to any one of claims 1 to 4, wherein: the first connector device (6) comprises a first connector body (601) and a fastening assembly (602), one end of the first connector body (601) close to the transmission screw rod (5) is of a cylinder structure, and the transmission screw rod (5) stretches into the cylinder structure of the first connector body (601) and is in threaded connection with the first connector body (601); one end of the first joint body (601) far away from the transmission screw rod (5) is movably connected with the fastening assembly (602), and the end head of the first joint body is connected with the chain (7) through the tension sensor (10).
6. The chain tensioning adjustment mechanism of claim 5, wherein: the second joint device (8) comprises a second joint body (801), a threaded rod (802) and a cross rod (803), one end of the second joint body (801) is movably connected with the chain (7), and the other end of the second joint body is movably connected with the threaded rod (802); the middle part of the cross rod (803) is sleeved on the threaded rod (802), is in threaded connection with the threaded rod (802), and is vertical to the threaded rod (802); the threaded rod (802) is provided with a double nut (804) for fastening the cross rod (803), and the double nut (804) is positioned on one side of the cross rod (803) away from the second joint body (801).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710299983.7A CN106931110B (en) | 2017-04-28 | 2017-04-28 | Chain tensioning adjustment mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN108502452B (en) * | 2018-04-17 | 2020-08-21 | 郑州东浩科技有限公司 | Hopper type elevator capable of preventing chain from shaking |
| CN114136602B (en) * | 2021-11-26 | 2022-09-30 | 桂林电子科技大学 | Compact type endurance test bed for machine tool cable protection chain |
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