CN213084473U - Spiral tensioning device capable of automatically adjusting tensioning force - Google Patents
Spiral tensioning device capable of automatically adjusting tensioning force Download PDFInfo
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- CN213084473U CN213084473U CN202021870419.XU CN202021870419U CN213084473U CN 213084473 U CN213084473 U CN 213084473U CN 202021870419 U CN202021870419 U CN 202021870419U CN 213084473 U CN213084473 U CN 213084473U
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Abstract
The utility model discloses an automatic adjust spiral straining device of tensioning force belongs to belt conveyor auxiliary assembly field. The problem to current spiral straining device can not the automatically regulated tensioning force, work efficiency is low, the utility model provides an automatically regulated tensioning force's spiral straining device, it includes respectively with the fixed slide of the bearing frame at cylinder both ends, the mobilizable setting of slide is in the frame, still includes the screw rod, screw rod and step motor's output shaft, is provided with the nut on the screw rod, the nut is fixed with the slide, still is provided with the pressure sensor who is used for detecting the screw rod axial force in the frame, step motor and pressure sensor equally divide and do not be connected with the PLC controller electricity. The utility model discloses a pressure sensor real-time supervision screw rod axial force to real-time transfer data to the PLC controller, then the PLC controller is adjusted step motor's output power, thereby the size that changes screw rod axial force reaches the purpose of independently adjusting the tensioning force, simple structure, and work efficiency is high.
Description
Technical Field
The utility model belongs to belt conveyor auxiliary assembly field, more specifically say, relate to an automatic adjust spiral straining device of tensioning force.
Background
At present, the belt conveyor mainly adopts the modes of spiral tensioning, vertical tensioning, vehicle type tensioning, steel rope winch tensioning, hydraulic tensioning and the like. The screw tightening device generally adjusts the tightening force manually through a lead screw, and locks and fixes the screw tightening device after the required tightening force is achieved. The tail roller is used as a tensioning roller. When the head cylinder serves as a tensioning cylinder, the screw tensioning device is placed on the head frame. The spiral tensioning is characterized by simple structure and compact arrangement. However, the tension and the stroke of the screw tightening manual adjustment are small, the adjustment of the tension force is operated by experience and observation of the state of the conveying belt, the constant pretension force cannot be automatically kept, frequent adjustment is needed, and the realization of automation and unmanned factories is not facilitated. The spiral tensioning device is generally applied to a small belt conveyor, and if the short-distance belt conveyor adopts a vertical heavy hammer for automatic tensioning, the space is limited and the cost is high.
Corresponding modification is also carried out aiming at the problems, for example, Chinese patent application No. CN201020219681.8, published as 2011, 9 and 14, discloses an intelligent spiral tensioning device which comprises a sliding frame, a screw rod, a pressure sensor with a display screen, a base, a nut and the like. The pressure sensor is fixed on the base, the base is connected with the nut, the tension force compresses the pressure sensor through the lead screw, the nut and the base to further push the sliding frame to move, and the conveying belt is tensioned. The disadvantages of the patent are that: this intelligence patent can only survey belt conveyor tension, can not carry out automatically regulated, still need consume great cost of labor and adjust.
Also like chinese patent application No. cn201520000910.x, published as 2015, 6 and 3, this patent discloses a belt conveyor screw tensioning device. The structure of the device mainly comprises a telescopic frame, a fixed frame and a screw rod, wherein one end of the telescopic frame is provided with a tail wheel connecting piece, the other end of the telescopic frame is inserted into the fixed frame and is in sliding fit with the fixed frame, the end part of the screw rod is rotatably connected with the end part of the fixed frame, and the main body part of the screw rod is inserted into the fixed frame and is connected with the telescopic frame in a thread pair mode. The disadvantages of the patent are that: the adjustment still needs to rely on manual experience, and the adjustment precision is not high.
SUMMERY OF THE UTILITY MODEL
1. Problems to be solved
Can not the automatically regulated tensioning force to current spiral straining device, the problem that work efficiency is low, the utility model provides an automatically regulated tensioning force's spiral straining device. The utility model discloses a pressure sensor real-time supervision screw rod axial force to real-time transfer data to the PLC controller, then the PLC controller is adjusted step motor's output power, thereby the size that changes screw rod axial force reaches the purpose of independently adjusting the tensioning force, simple structure, and work efficiency is high.
2. Technical scheme
In order to solve the above problems, the utility model adopts the following technical proposal.
The utility model provides an automatic spiral straining device of adjusting tensioning force, includes the slide fixed with the bearing frame at cylinder both ends respectively, and the mobilizable setting of slide still includes the screw rod in the frame, and screw rod and step motor's output shaft are provided with the nut on the screw rod, and the nut is fixed with the slide, still is provided with the pressure sensor who is used for detecting the screw rod axial force in the frame, and step motor and pressure sensor are equallyd divide and do not are connected with the PLC controller electricity.
Furthermore, a fixing plate is arranged at one end of the screw rod connected with the stepping motor, a pressure sensor is arranged between the fixing plate and the rack, and the pressure sensor is sleeved on the outer side of the screw rod.
Furthermore, a fixed shaft sleeve is arranged between the stepping motor and the frame.
Furthermore, both ends of the frame are provided with baffle plates which are vertical to the frame and are upward.
Furthermore, a lubricating layer is arranged on one surface of the frame, which is in contact with the sliding seat.
Furthermore, an output shaft in the stepping motor is connected with the screw through a coupler.
Furthermore, a speed reducer is arranged between the stepping motor and the screw rod, an output shaft of the stepping motor is connected with an input shaft of the speed reducer, and an output shaft of the speed reducer is connected with the screw rod.
Furthermore, an alarm is arranged on the machine frame, and the pressure sensor is electrically connected with the alarm.
3. Advantageous effects
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the utility model discloses a pressure sensor real time monitoring screw rod axial force's size, can calculate the straining force in the belt conveyor operation process according to the size of screw rod axial force to pressure sensor feeds back the signal to the PLC controller, and the PLC controller controls step motor then, reaches the effect of adjusting the straining force through adjusting step motor, and the whole process realizes automatic operation, reduces the input of cost of labor and improves work efficiency;
(2) the utility model discloses establish the pressure sensor cover in the screw rod outside, when the screw rod rotated to drive the nut and moved, the screw rod can receive an axial force, and the screw rod transmits this force to the fixed plate, and the fixed plate carries out an extrusion effect to pressure sensor, then pressure sensor can measure the size of screw rod axial force; the pressure sensor is arranged between the fixed plate and the rack, so that the measurement result is accurate and is not easily damaged by the external environment, and the service life of the pressure sensor is prolonged;
(3) the utility model is provided with the fixed shaft sleeve between the stepping motor and the frame, the stepping motor is connected with the screw rod in the fixed shaft sleeve, the output shaft of the stepping motor and the screw rod can be protected, the abrasion of the stepping motor and the screw rod caused by the influence of the external environment is avoided, and the stability of the work is further ensured;
(4) the utility model is provided with the baffle plates which are vertical to the frame and are upward at the two ends of the frame, the baffle plates play a limiting role for the slide seat, the slide seat is prevented from sliding outside the frame, and the safety performance of the moving process is ensured; a lubricating layer is arranged on one surface of the machine frame, which is in contact with the sliding seat, so that the friction force between the machine frame and the sliding seat is reduced, and the sliding seat can smoothly slide on the machine frame;
(5) the utility model connects the stepping motor and the screw rod through the coupling, which ensures the stable connection and the stable power transmission between the stepping motor and the screw rod; meanwhile, the stepping motor and the screw rod can be connected through the speed reducer, the output torque can be effectively increased due to the arrangement of the speed reducer, and the screw rod is prevented from being directly connected with the stepping motor and easily damaged due to large power;
(6) the utility model discloses still be provided with the alarm in the frame, pressure sensor is connected with the alarm electricity, can feed back the signal to the alarm when pressure sensor measured pressure surpasss the normal value, and the alarm and then report to the police, can in time effectual warning staff's attention, further guaranteed the promptness and the security of operation process.
Drawings
Fig. 1 is a front view of the present invention;
fig. 2 is a top view of the present invention;
fig. 3 is a side view of the present invention;
fig. 4 is a perspective view of the present invention.
In the figure: 1. a stepping motor; 2. fixing the shaft sleeve; 3. a pressure sensor; 4. a fastener; 5. a screw; 6. a frame; 7. a slide base; 8. a drum; 9. a coupling; 10. and a nut.
Detailed Description
The following embodiments and drawings are combined to illustrate the present invention
Further description is made.
Example 1
As shown in fig. 1, 2, 3 and 4, a spiral tensioning device capable of automatically adjusting tensioning force comprises sliding seats 7 respectively fixed with bearing seats at two ends of a roller 8, wherein the sliding seats 7 are movably arranged on a rack 6, namely, the two ends of the roller 8 are respectively provided with the rack 6, the rack 6 is horizontally placed, the sliding seats 7 can slide back and forth in the horizontal direction of the rack 6, the sliding seats 7 are fixed with the bearing seats on the roller 8, and the sliding of the sliding seats 7 can drive the roller 8 to move. Specifically, frame 6 is the channel-section steel, has higher intensity and hardness, and the spill opening in the channel-section channel section is down, and slide 7 card just can remove at the channel-section steel upper surface at the upper surface of channel-section steel. This spiral straining device of automatically regulated tensioning still includes screw rod 5, and 5 levels of screw rod are placed in the channel-section steel, and the channel-section steel plays a guard action to screw rod 5, avoids screw rod 5 to receive external environment influence and takes place to damage. Screw rod 5 and step motor 1's output shaft, step motor 1 passes through the fixing base to be fixed. Preferably, an output shaft in the stepping motor 1 is connected with the screw rod 5 through a coupler 9, so that the stepping motor 1 is stably connected with the screw rod 5, and the power transmission is stable. The screw 5 is provided with a nut 10, the nut 10 is engaged with the thread on the screw 5, and the nut 10 can move back and forth on the screw 5 along with the rotation of the screw 5. The nut 10 is fixed with the sliding seat 7, and the movement of the nut 10 drives the movement of the sliding seat 7. Still be provided with the pressure sensor 3 that is used for detecting 5 axial forces of screw rod on the frame 6, step motor 1 and pressure sensor 3 are equallyd divide and are connected with the PLC controller electricity respectively. Because the pressure sensor 3 can measure the axial force of the screw 5, the axial force of the screw 5 and the tension force of the roller 8 are on the same straight line; and then can obtain the tension that cylinder 8 received, finally calculate the size of belt conveyor tension, if pressure sensor 3 measured value and default deviation exceed certain limit, pressure sensor 3 feeds back the signal to the PLC controller, and the PLC controller adjusts step motor 1 output power's size then, changes the size of 5 axial forces of screw rod, realizes automatic regulation, prevents that belt conveyor from skidding. Meanwhile, when the roller 8 deviates in the running process of the belt conveyor, the PLC controller adjusts the stepping motors 1 at the two ends of the roller 8 differently, so that the screws 5 at the two ends of the roller 8 rotate for different turns, and the angle of the roller 8 is finely adjusted to achieve the purpose of deviation correction. The utility model discloses a 5 axial forces of pressure sensor 3 real-time supervision screw rod to real-time transfer data to the PLC controller, then the PLC controller is adjusted step motor 1's output power, thereby the size that changes 5 axial forces of screw rod reaches the purpose of independently adjusting the tensioning force, simple structure, and work efficiency is high. Meanwhile, if the stepping motor 1 is damaged or overhauled, the screw 5 can be manually adjusted by a wrench, so that the work of the belt conveyor cannot be delayed. Drum 8 for the driven pulley, when the driven pulley sets up at 6 heads in the frame, the device just set up the head in frame 6, when the driven pulley sets up at 6 afterbody in the frame, the device just set up the afterbody in frame 6.
Specifically, in the embodiment, a groove is formed at one end of the screw rod 5 connected with the stepping motor 1, a fixing plate is arranged in the groove, the pressure sensor 3 is arranged between the fixing plate and the frame 6, the fixing plate, the pressure sensor 3 and the frame 6 are all provided with mounting holes at corresponding positions, a fastening bolt or a fastening screw and other fastening pieces 4 sequentially penetrate through the holes on the fixing plate, the pressure sensor 3 and the frame 6 to fix the fixing plate, the pressure sensor 3 and the frame 6, and pressure sensor 3 cover is established in the screw rod 5 outside, because of screw rod 5 is when rotatory, drives nut 10 and removes on screw rod 5, and nut 10 gives screw rod 5 a force along the horizontal direction of screw rod 5 is the axial force of screw rod 5, and screw rod 5 transmits this force for the fixed plate on screw rod 5, and the fixed plate carries out an extrusion to pressure sensor 3, and then pressure sensor 3 can measure the size of the 5 axial forces of screw rod. Make pressure sensor 3 measuring result accurate through the extrusion of fixed plate, set up pressure sensor 3 between frame 6 and fixed plate simultaneously, guarantee that the 3 mounted position of pressure sensor fastens, be difficult for receiving external environment's interference, further guarantee measurement accuracy. Of course, the pressure sensor 3 is not limited to the positional relationship illustrated in the present embodiment, and may be provided at a different position of the frame 6 as long as it can measure the axial force of the screw 5.
Example 2
Basically with embodiment 1, be connected because of step motor 1 output shaft and screw rod 5, in order to guarantee that the two is difficult for receiving external environment's interference, be provided with fixed axle sleeve 2 between step motor 1 and frame 6 in this embodiment, step motor 1's output shaft and all set up in fixed axle sleeve 2 with step motor 1 output shaft's one section screw rod 5, fixed axle sleeve 2 carries out a sealed effect to step motor 1 and screw rod 5, guarantee steadiness and the security of being connected between step motor 1 and the screw rod 5, reduce cost of maintenance. Further, the both ends of frame 6 all are provided with the ascending baffle of perpendicular frame 6, and the both ends of every frame 6 all are provided with the baffle, and the baffle between two frames 6 is connected, and the setting of baffle can play a limiting displacement to slide 7, avoids slide 7 roll-off frame 6 to cause certain safety risk outward, improves the security performance of whole process. Simultaneously, in order to guarantee that slide 7 slides smoothly on frame 6, be provided with the lubricant film in the one side of frame 6 with the contact of slide 7, the lubricant film is the coating that is formed by emollient promptly, and the setting up of lubricant film has reduced the frictional force between frame 6 and slide 7 for slide 7 slides in frame 6 obtains guaranteeing.
Furthermore, a speed reducer is arranged between the stepping motor 1 and the screw 5, an output shaft of the stepping motor 1 is connected with an input shaft of the speed reducer, and an output shaft of the speed reducer is connected with the screw 5. The setting of reduction gear has increased output torque, avoids screw rod 5 directly to be connected with step motor 1 and instantaneously receives great power screw rod 5 and easily takes place to damage. Of course, the stepping motor 1 can be replaced by a speed reducing motor to save cost while providing a power source for the screw 5; or the stepping motor 1 is replaced by a servo motor for driving, the servo motor realizes closed-loop control, and the adjustment precision is higher. Of course, the screw 5 and the nut 10 can be replaced by a ball screw, and the ball screw can realize higher-precision positioning and higher-efficiency torque transmission.
Simultaneously, in this embodiment, still be provided with the alarm on the frame 6, pressure sensor 3 is connected with the alarm electricity, can feed back the alarm with the signal when pressure that pressure sensor 3 surveyed surpasss the normal value, and the alarm then reports to the police, can in time effectual warning staff's attention, has further guaranteed operation process's promptness and security.
The examples of the utility model are only right the utility model discloses a preferred embodiment describes, and not right the utility model discloses design and scope are injectd, do not deviate from the utility model discloses under the prerequisite of design idea, the field engineering technical personnel are right the utility model discloses a various deformation and improvement that technical scheme made all should fall into the protection scope of the utility model.
Claims (8)
1. The utility model provides an automatic spiral straining device of adjusting tension, includes slide (7) fixed with the bearing frame at cylinder (8) both ends respectively, and the mobilizable setting of slide (7) is on frame (6), its characterized in that: the screw rod (5) is connected with the stepping motor (1), a nut (10) is arranged on the screw rod (5), the nut (10) is fixed with the sliding seat (7), a pressure sensor (3) used for detecting the axial force of the screw rod (5) is further arranged on the rack (6), and the stepping motor (1) and the pressure sensor (3) are respectively and electrically connected with the PLC.
2. The screw tensioner as claimed in claim 1, wherein the tension adjusting means comprises: a fixing plate is arranged at one end of the screw rod (5) connected with the stepping motor (1), a pressure sensor (3) is arranged between the fixing plate and the rack (6), and the pressure sensor (3) is sleeved on the outer side of the screw rod (5).
3. A screw tensioner for automatically adjusting tension as claimed in claim 2, wherein: a fixed shaft sleeve (2) is arranged between the stepping motor (1) and the frame (6).
4. The screw tensioner as claimed in claim 1, wherein the tension adjusting means comprises: both ends of the frame (6) are provided with baffle plates which are vertical to the frame (6) and are upward.
5. The screw tensioner as claimed in claim 4, wherein the tension adjusting means comprises: a lubricating layer is arranged on one surface of the frame (6) which is contacted with the sliding seat (7).
6. The screw tensioner as claimed in claim 1, wherein the tension adjusting means comprises: an output shaft in the stepping motor (1) is connected with the screw (5) through a coupler (9).
7. The screw tensioner as claimed in claim 1 or 6, wherein: a speed reducer is arranged between the stepping motor (1) and the screw rod (5), an output shaft of the stepping motor (1) is connected with an input shaft of the speed reducer, and an output shaft of the speed reducer is connected with the screw rod (5).
8. The screw tensioner as claimed in claim 1, wherein the tension adjusting means comprises: an alarm is further arranged on the frame (6), and the pressure sensor (3) is electrically connected with the alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021870419.XU CN213084473U (en) | 2020-08-31 | 2020-08-31 | Spiral tensioning device capable of automatically adjusting tensioning force |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021870419.XU CN213084473U (en) | 2020-08-31 | 2020-08-31 | Spiral tensioning device capable of automatically adjusting tensioning force |
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| CN213084473U true CN213084473U (en) | 2021-04-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114852600A (en) * | 2022-06-13 | 2022-08-05 | 泰安英迪利机电科技有限公司 | Spiral tensioning device for belt conveyor |
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- 2020-08-31 CN CN202021870419.XU patent/CN213084473U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114852600A (en) * | 2022-06-13 | 2022-08-05 | 泰安英迪利机电科技有限公司 | Spiral tensioning device for belt conveyor |
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