Belt tensioning device

Abstract

The invention discloses a belt tensioning device, and aims to provide a belt tensioning device which is easy to adjust tension and improve transmission efficiency. The device comprises a rack, a belt transmission assembly and a tensioning assembly are arranged on the rack, the belt transmission assembly is provided with a transmission belt, the tensioning assembly comprises a linear guide rail, a working platform slides on the linear guide rail, and a rigid connecting assembly and a flexible connecting assembly are arranged on the working platform. The two ends of the transmission belt are connected with the rigid connecting assembly and the flexible connecting assembly respectively, the flexible connecting assembly comprises a belt fixing seat, a supporting seat and a stud, the transmission belt is connected to the belt fixing seat, one end of the stud is connected to the belt fixing seat, and the other end of the stud penetrates through the supporting seat. An elastic force adjusting nut, a spring and a belt tension adjusting nut are connected to the stud, and the belt tension adjusting nut, the supporting seat, the spring, the elastic force adjusting nut and the belt fixing seat are sequentially arranged in the length direction of the stud. The belt tensioning device is applied to the technical field of belt tensioning devices.

Description

Technical Field

[0001] The invention relates to a belt tensioning device. Background Art

[0002] In the belt drive system, the belt is wrapped around the driving wheel and the driven wheel, but because the belt tension may change with the load, it is necessary to make the belt tension meet the technical requirements through tensioning to ensure the normal operation of the belt. The traditional belt drive tensioning method is mainly achieved by changing the installation spacing between the belt driving wheel and the driven wheel, but this tensioning method will cause the belt tension to be constant. When encountering a load, the belt will deform, causing the tension to decrease and causing the belt to slip. In addition, this method requires the mounting seat of the driving wheel or the driven wheel to be removed, and then the belt is connected. Due to the limited space of the vehicle-mounted equipment, it is more complicated to install and replace the belt, and the belt tensioning process requires a certain tension force. Direct manual adjustment cannot meet the tension force requirements, and the tension adjustment process is more complicated; when adjusting, when the belt tension is too large, its life will be reduced and noise will be generated; when the tension is too small, the belt may jump out of the pulley groove or slip due to the starting torque or impact load, which is difficult. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a belt tensioning device which is easy to adjust tension and improve transmission efficiency.

[0004] The technical solution adopted by the present invention is: the present invention includes a frame, on which a belt transmission assembly and a tensioning assembly are arranged, the belt transmission assembly has a transmission belt, the tensioning assembly includes a linear guide rail, a working platform is slidably arranged on the linear guide rail, a rigid connection assembly and a flexible connection assembly are arranged on the working platform, the two ends of the transmission belt are respectively connected to the rigid connection assembly and the flexible connection assembly, the flexible connection assembly includes a belt fixing seat, a support seat and a stud, the transmission belt is connected to the belt fixing seat, one end of the stud is connected to the belt fixing seat, and the other end passes through the support seat, the stud is connected to an elastic force adjustment nut, a spring and a belt tension adjustment nut, and the belt tension adjustment nut, the support seat, the spring, the elastic force adjustment nut and the belt fixing seat are arranged in sequence along the length direction of the stud.

[0005] Furthermore, the flexible connection component also includes a detection component, which includes a sensor fixing plate and a travel switch. The sensor fixing plate is arranged on the support seat, and the travel switch is arranged on the sensor fixing plate and abuts against the belt fixing seat.

[0006] Furthermore, a locking nut is connected to the stud, and the locking nut abuts against the belt tension adjusting nut.

[0007] Furthermore, a posture fixing pin is connected between the belt fixing seat and the supporting seat.

[0008] Furthermore, the posture fixing pin is located below the stud.

[0009] Furthermore, the belt fixing seat includes a fixed base, on which a belt fixing pin and a first pressure plate are provided. The first pressure plate is locked on the fixed base by screws, and the transmission belt is wound around the belt fixing pin and then pressed between the first pressure plate and the fixed base.

[0010] Furthermore, the rigid connection assembly includes a connection seat, a lower end of the connection seat is connected to a second pressing plate, and the transmission belt is pressed between the connection seat and the second pressing plate.

[0011] Furthermore, the belt transmission assembly includes a driving assembly and a driven assembly, and both the driving assembly and the driven assembly are driven by the transmission belt.

[0012] Furthermore, the driving assembly includes a motor fixing frame, a first bearing seat and a first synchronous wheel, the first bearing seat is cooperated with a first rotating shaft, the motor fixing frame is provided with a motor, the motor is connected to the first rotating shaft through a coupling, the first synchronous wheel is connected to the first rotating shaft, and the first synchronous wheel is driven by the transmission belt.

[0013] Furthermore, the driven component includes a second bearing seat and a second synchronous wheel, the second bearing seat is cooperated with a second rotating shaft, the second synchronous wheel is connected to the second rotating shaft, and the second synchronous wheel is driven by the transmission belt.

[0014] The beneficial effects of the present invention are:

[0015] With respect to the deficiencies of the prior art, through the arrangement of the belt tensioning device of the present invention, it is only necessary to adjust the belt tension adjusting nut to adjust the tension of the transmission belt, which is not only easy to operate, but also can ensure the tensioning effect, so as to avoid the situation where the service life of the transmission belt is reduced and noise is generated due to excessive tension of the transmission belt, and to avoid the situation where the belt jumps out of the pulley groove or the belt slips due to insufficient tension of the transmission belt, thereby improving the transmission efficiency. The present invention has the advantages of easy tension adjustment and improved transmission efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0018] Figure 2 yes Figure 1 A partial enlarged schematic diagram of part A;

[0019] Figure 3 This is a schematic diagram of the planar structure of the local structure of the present invention. Figure 1 ;

[0020] Figure 4 This is a schematic diagram of the planar structure of the local structure of the present invention. Figure 2 ;

[0021] Figure 5 It is a schematic diagram of the planar structure of the driving assembly of the present invention;

[0022] Figure 6 It is a schematic diagram of the planar structure of the driven component of the present invention.

[0023] The reference numerals are as follows:

[0024] 1. Frame; 2. Drive belt; 3. Linear guide; 5. Working platform; 6. Rigid connection component; 7. Flexible connection component; 8. Belt fixing seat; 9. Support seat; 10. Stud; 11. Elastic adjustment nut; 12. Spring; 13. Belt tension adjustment nut; 15. Detection component; 16. Sensor fixing plate; 17. Travel switch; 18. Anti-loosening nut; 19. Posture fixing pin; 20. Fixed base; 21. Belt fixing pin; 22. First pressure plate; 23. Connecting seat; 25. Second pressure plate; 26. Driving component; 27. Driven component; 28. Motor fixing frame; 29. ​​First bearing seat; 30. First synchronous wheel; 31. First rotating shaft; 32. Motor; 33. Coupling; 35. Second bearing seat; 36. Second synchronous wheel; 37. Second rotating shaft.

[0025] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] It should be noted that all directional indications in the embodiments of the present invention, such as up, down, left, right, front, back, clockwise, counterclockwise, etc., are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0028] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0029] like Figures 1 to 4 As shown, in this embodiment, the present invention includes a frame 1, on which a belt transmission assembly and a tensioning assembly are arranged, the belt transmission assembly has a transmission belt 2, the tensioning assembly includes a linear guide rail 3, a working platform 5 is slidably arranged on the linear guide rail 3, a rigid connection assembly 6 and a flexible connection assembly 7 are arranged on the working platform 5, the two ends of the transmission belt 2 are respectively connected to the rigid connection assembly 6 and the flexible connection assembly 7, the flexible connection assembly 7 includes a belt fixing seat 8, a support seat 9 and a stud 10, the transmission belt 2 is connected to the belt fixing seat 8, one end of the stud 10 is connected to the belt fixing seat 8, and the other end passes through the support seat 9, the stud 10 is connected to an elastic force adjustment nut 11, a spring 12 and a belt tension adjustment nut 13, the belt tension adjustment nut 13, the support seat 9, the spring 12, the elastic force adjustment nut 11 and the belt fixing seat 8 are arranged in sequence along the length direction of the stud 10.

[0030] It should be noted that the transmission belt 2 provides power for the working platform 5, the linear guide 3 maintains the movement direction of the transmission belt 2 and provides a stable linear moving pair for the working platform 5; the two ends of the transmission belt 2 are respectively connected to the rigid connection component 6 and the belt fixing seat 8; the support seat 9 is connected to the belt fixing seat 8 through the stud 10, and a spring 12 is arranged between the support seat 9 and the belt fixing seat 8, and the elastic force of the spring 12 is adjusted by the elastic force adjusting nut 11; the support seat 9 is connected to the spring 12, and can move relative to the stud 10 between the spring 12 and the belt tension adjusting nut 13.

[0031] With respect to the deficiencies of the prior art, in the present invention, during the movement process, when the transmission belt 2 has insufficient tension, the total length of the transmission belt 2 increases and reaches a state where the spring 12 cannot be adjusted. At this time, the spring 12 stretches due to the increased deformation of the transmission belt 2, and the distance between the support seat 9 and the belt fixing seat 8 increases. By adjusting the belt tension adjusting nut 13 to reduce the distance between the support seat 9 and the belt fixing seat 8, the transmission belt 2 can be adjusted to achieve the optimal tension. Therefore, through the setting of the belt tensioning device of the present invention, it is only necessary to adjust the belt tension adjusting nut 13 to adjust the tension of the transmission belt 2. It is not only easy to operate, but also can ensure the tensioning effect, so as to avoid the situation where the service life of the transmission belt 2 is reduced and noise is generated due to excessive tension, and to avoid the situation where the belt jumps out of the pulley groove or the belt slips due to the tension of the transmission belt 2 being too small, thereby improving the transmission efficiency, so that the present invention has the advantages of easy tension adjustment and improved transmission efficiency.

[0032] like Figures 1 to 4 As shown, in some embodiments, the flexible connection component 7 further includes a detection component 15, and the detection component 15 includes a sensor fixing plate 16 and a travel switch 17, wherein the sensor fixing plate 16 is arranged on the support seat 9, and the travel switch 17 is arranged on the sensor fixing plate 16 and abuts against the belt fixing seat 8. Among them, the baffle of the travel switch 17 contacts the side of the belt fixing seat 8 to be in a triggering state. Specifically, when the spring 12 stretches due to the increased deformation of the transmission belt 2, and the distance between the support seat 9 and the belt fixing seat 8 increases, the travel switch 17 moves away from the belt fixing seat 8 along with the support seat 9, so that the baffle of the travel switch 17 moves away from the side of the belt fixing seat 8, causing the contact of the travel switch 17 to disconnect and feed back the signal, thereby issuing a warning, and timely manual intervention and adjustment of the tension of the transmission belt 2, so that the belt tensioning device can automatically identify and issue an alarm when the tension is insufficient.

[0033] like Figure 2 and Figure 3As shown, in some embodiments, the stud 10 is further connected with a locking nut 18, and the locking nut 18 abuts against the belt tension adjustment nut 13; a posture fixing pin 19 is connected between the belt fixing seat 8 and the support seat 9; the posture fixing pin 19 is located below the stud 10. Specifically, the belt tension adjustment nut 13 is locked by the locking nut 18 to prevent the belt tension adjustment nut 13 from loosening and affecting the tension of the transmission belt 2; in addition, the posture fixing pin 19 is used to maintain the posture of the belt fixing seat 8 and the support seat 9.

[0034] like Figure 2 and Figure 3 As shown, in some embodiments, the belt fixing seat 8 includes a fixing base 20, on which a belt fixing pin 21 and a first pressing plate 22 are provided, the first pressing plate 22 is screwed to the fixing base 20, and the transmission belt 2 is wound around the belt fixing pin 21 and pressed between the first pressing plate 22 and the fixing base 20. Specifically, after one end of the transmission belt 2 is wound around the belt fixing pin 21, it is screwed to the fixing base 20 by the first pressing plate 22, which is not only conducive to the transmission belt 2 not being easy to slip during movement, but also can have a certain stability after the screws on the first pressing plate 22 are loosened.

[0035] like Figure 3 As shown, in some embodiments, the rigid connection assembly 6 includes a connection seat 23, a second pressing plate 25 is connected to the lower end of the connection seat 23, and the transmission belt 2 is pressed between the connection seat 23 and the second pressing plate 25. Specifically, by pressing the transmission belt 2 between the connection seat 23 and the second pressing plate 25, the transmission belt 2 is firmly fixed.

[0036] like Figure 1 , Figure 5 and Figure 6 As shown, in some embodiments, the belt transmission assembly includes a driving assembly 26 and a driven assembly 27 , and both the driving assembly 26 and the driven assembly 27 are driven by the transmission belt 2 .

[0037] like Figure 5As shown, in some embodiments, the driving assembly 26 includes a motor fixing frame 28, a first bearing seat 29 and a first synchronous wheel 30, the first bearing seat 29 is provided with a first rotating shaft 31, the motor fixing frame 28 is provided with a motor 32, the motor 32 is connected to the first rotating shaft 31 through a coupling 33, the first synchronous wheel 30 is connected to the first rotating shaft 31, and the first synchronous wheel 30 is driven by the transmission belt 2. Among them, a first retaining spring is fixedly connected to the first rotating shaft 31. Specifically, the motor 32 provides power to control the motion state of the transmission belt 2, the coupling 33 connects the output shaft of the motor 32 with the first rotating shaft 31, and transmits motion and torque to provide power for the entire mechanism.

[0038] like Figure 6 As shown, in some embodiments, the driven assembly 27 includes a second bearing seat 35 and a second synchronous wheel 36, the second bearing seat 35 is provided with a second rotating shaft 37, the second synchronous wheel 36 is connected to the second rotating shaft 37, and the second synchronous wheel 36 is transmitted with the transmission belt 2. Among them, the second rotating shaft 37 is fixedly connected with a second retaining spring; the second synchronous wheel 36 is connected to the second rotating shaft 37, and the second bearing seat 35 rotates the second rotating shaft 37 fixed to the inner ring through the outer ring of the fixed bearing, and the outer ring remains stationary, always consistent with the transmission direction (such as the direction of motor operation). Specifically, the second synchronous wheel 36 is used to transmit with the transmission belt 2, and transmits power and motion through the combination of the rack and the tooth groove, aiming to ensure accurate motion transmission, so that the transmission system can work in a reliable and accurate manner.

[0039] The belt tensioning device of the present invention uses a spring 12 to adjust the tension of the transmission belt 2, and detects the tension of the transmission belt 2 through a detection component 15. When the tension of the transmission belt 2 decreases and reaches a state where the spring 12 cannot adjust, the detection component 15 sends feedback and an alarm, causing the driving component 26 to stop driving. Therefore, the belt tensioning device can not only adjust the tension of the transmission belt 2, but also prevent the belt from jumping out of the pulley groove or slipping due to abnormal tension of the transmission belt 2.

[0040] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A belt tensioning device, characterized in that: The invention comprises a frame (1), wherein a belt transmission component and a tensioning component are arranged on the frame (1), wherein the belt transmission component has a transmission belt (2), wherein the tensioning component comprises a linear guide rail (3), wherein a working platform (5) slides on the linear guide rail (3), wherein a rigid connection component (6) and a flexible connection component (7) are arranged on the working platform (5), wherein two ends of the transmission belt (2) are respectively connected to the rigid connection component (6) and the flexible connection component (7), wherein the flexible connection component (7) comprises a belt fixing seat (8), a supporting seat (9) and a screw The stud (10) is connected to the belt fixing seat (8), one end of the stud (10) is connected to the belt fixing seat (8), and the other end passes through the support seat (9), the stud (10) is connected to an elastic force adjustment nut (11), a spring (12) and a belt tension adjustment nut (13), and the belt tension adjustment nut (13), the support seat (9), the spring (12), the elastic force adjustment nut (11) and the belt fixing seat (8) are arranged in sequence along the length direction of the stud (10).

2. A belt tensioning device according to claim 1, characterized in that: The flexible connection component (7) also includes a detection component (15), and the detection component (15) includes a sensor fixing plate (16) and a travel switch (17). The sensor fixing plate (16) is arranged on the support seat (9), and the travel switch (17) is arranged on the sensor fixing plate (16) and abuts against the belt fixing seat (8).

3. A belt tensioning device according to claim 1 or 2, characterized in that: The stud (10) is also connected to a locking nut (18), and the locking nut (18) abuts against the belt tension adjusting nut (13).

4. A belt tensioning device according to claim 3, characterized in that: A posture fixing pin (19) is connected between the belt fixing seat (8) and the supporting seat (9).

5. A belt tensioning device according to claim 4, characterized in that: The posture fixing pin (19) is located below the stud (10).

6. A belt tensioning device according to claim 4, characterized in that: The belt fixing seat (8) comprises a fixing base (20), on which a belt fixing pin (21) and a first pressing plate (22) are provided, wherein the first pressing plate (22) is fastened to the fixing base (20) by means of screws, and the transmission belt (2) is wound around the belt fixing pin (21) and then pressed between the first pressing plate (22) and the fixing base (20).

7. A belt tensioning device according to claim 1, characterized in that: The rigid connection assembly (6) comprises a connection seat (23), the lower end of the connection seat (23) is connected to a second pressing plate (25), and the transmission belt (2) is pressed between the connection seat (23) and the second pressing plate (25).

8. A belt tensioning device according to claim 1, characterized in that: The belt transmission assembly comprises a driving assembly (26) and a driven assembly (27), and both the driving assembly (26) and the driven assembly (27) are driven by the transmission belt (2).

9. A belt tensioning device according to claim 8, characterized in that: The driving assembly (26) comprises a motor fixing frame (28), a first bearing seat (29) and a first synchronous wheel (30); the first bearing seat (29) is provided with a first rotating shaft (31); the motor fixing frame (28) is provided with a motor (32); the motor (32) is connected to the first rotating shaft (31) via a coupling (33); the first synchronous wheel (30) is connected to the first rotating shaft (31); and the first synchronous wheel (30) is driven by the transmission belt (2).

10. A belt tensioning device according to claim 8, characterized in that: The driven component (27) comprises a second bearing seat (35) and a second synchronous wheel (36); the second bearing seat (35) is provided with a second rotating shaft (37); the second synchronous wheel (36) is connected to the second rotating shaft (37); and the second synchronous wheel (36) is driven by the transmission belt (2).

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