Tension measuring device

Abstract

The utility model provides a tensile force measuring device, which is used for measuring the tensile force of a transmission belt, and comprises a bracket, a tension sensor and a controller, the pressing rod is arranged on the support in a floating mode, and the first end of the pressing rod is used for pressing the transmission belt; the rotating shaft is rotatably arranged on the bracket; the cam is arranged on the rotating shaft and can abut against the second end of the pressing rod, the rotating shaft rotates to drive the pressing rod to float through the cam, and when the pressing rod floats, the first end of the pressing rod is connected with the transmission belt in a pressing mode and enables the transmission belt to deform; and the torque detection piece is connected with the rotating shaft, and the torque detection piece can detect the torque of the rotating shaft. According to the technical scheme, the problem that the accuracy of tension measurement of the transmission belt is poor in the prior art is effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of tension force measurement, and more specifically, to a tension force measuring device. Background Technology

[0002] Transmission machinery includes a frame, a driving pulley, a driven pulley, and a transmission belt. Both the driving and driven pulleys are rotatably mounted on the frame. The transmission belt covers the outside of the driving and driven pulleys. The rotation of the driving pulley drives the transmission belt, which in turn drives the driven pulley, further rotating the equipment on the driven pulley. Excessive or insufficient tension in the transmission belt can lead to malfunctions in the transmission machinery, increase maintenance costs and the risk of failure, affect production continuity and operational efficiency, and shorten the service life of the transmission belt.

[0003] In related technologies, measuring the tension of a drive belt relies on the experience and feel of the maintenance personnel. The specific method involves the operator pressing the drive belt between the driving and driven pulleys by hand, applying pressure, and visually inspecting the degree of deformation to determine if the belt tension is appropriate. However, this method is inherently subjective. Due to differences in operator experience and strength, the accuracy and consistency of this tension measurement method are difficult to guarantee.

[0004] Thus, the methods used to measure tension in related technologies result in poor accuracy in measuring the tension of transmission belts. Utility Model Content

[0005] The main objective of this invention is to provide a tension measuring device to solve the problem of poor accuracy in measuring the tension of transmission belts in related technologies.

[0006] To achieve the above objectives, according to one aspect of the present invention, a tension measuring device is provided for measuring the tension of a transmission belt. The tension measuring device includes: a bracket; a pressure rod buoyantly mounted on the bracket, the first end of the pressure rod being used to press against the transmission belt; a rotating shaft rotatably mounted on the bracket; a cam mounted on the rotating shaft, the cam being able to abut against the second end of the pressure rod, the rotating shaft rotating to drive the pressure rod to float via the cam, when the pressure rod floats, the first end of the pressure rod pressing against the transmission belt and deforming the transmission belt; and a torque detection element connected to the rotating shaft, the torque detection element being able to detect the torque of the rotating shaft.

[0007] Furthermore, the tension measuring device also includes a guide block mounted on the support, with a guide hole extending vertically inside the guide block, the guide hole engaging with the pressure rod.

[0008] Furthermore, the tension measuring device also includes an elastic element that abuts against the guide block and the pressure rod.

[0009] Furthermore, a stop flange is provided at the second end of the pressure rod, and an elastic element abuts between the stop flange and the guide block.

[0010] Furthermore, the tension measuring device also includes a laser emitter, which is correspondingly set with the pressure bar.

[0011] Furthermore, the bracket is equipped with a height-adjustable mounting rod, on which the laser emitter is mounted.

[0012] Furthermore, a scale area is provided on the outer wall of the pressure bar, the scale area extending along the axial direction of the pressure bar; and / or, the tension measuring device also includes a roller, the roller being rotatably disposed at the first end of the pressure bar.

[0013] Furthermore, the support includes a frame body and legs connected to the frame body, the length of which is adjustable.

[0014] Furthermore, the outrigger includes a sleeve and a support rod telescopically disposed within the sleeve. The bracket also includes a fastener that passes through the sleeve to securely connect the sleeve and the support rod, with one of the sleeve and the support rod connected to the bracket body.

[0015] Furthermore, the tension measuring device also includes a bearing housing mounted on a bracket and a bearing mounted inside the bearing housing, with the rotating shaft connected to the inner ring of the bearing.

[0016] The tension measuring device of this invention measures the tension of a transmission belt. The device includes a support, a pressure rod, a rotating wheel, a cam, and a torque detection element. The pressure rod is buoyantly mounted on the support, with its first end pressing against the transmission belt. A rotating shaft is rotatably mounted on the support. The cam is mounted on the rotating shaft and abuts against the second end of the pressure rod. The rotating shaft rotates to cause the pressure rod to float via the cam. When the pressure rod floats, its first end presses against the transmission belt, deforming it. The torque detection element is connected to the rotating shaft and detects the torque of the shaft. Thus, the operator drives the rotating shaft to rotate via the torque detection element, which in turn rotates the cam, causing the pressure rod to float. The first end of the pressure rod presses against the transmission belt, deforming it. Furthermore, the deformation of the transmission belt applies a reaction force to the pressure rod, which transmits this reaction force to the cam and the rotating shaft, allowing the torque detection element to detect the torque of the rotating shaft and thus determine the magnitude of the reaction force. Operators can determine whether the tension of the drive belt is appropriate based on the magnitude of the reaction force detected by the torque sensor and the amount of belt deformation. Detecting the reaction force using the torque sensor reduces operator subjectivity and improves the accuracy of drive belt tension measurement. Therefore, the technical solution of this application effectively solves the problem of poor accuracy in drive belt tension measurement in related technologies. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0018] Figure 1 A side view schematic diagram of an embodiment of the tension force measuring device according to the present invention is shown;

[0019] Figure 2 It shows Figure 1 A side view of the rotating shaft and cam of the tension measuring device;

[0020] Figure 3 It shows Figure 1 A three-dimensional structural diagram of the rotating shaft and cam of the tension measuring device.

[0021] The above figures include the following reference numerals:

[0022] 11. Frame body; 12. Support leg; 121. Sleeve; 122. Support rod; 13. Guide block; 14. Mounting rod;

[0023] 20. Pressure bar; 21. Stop flange; 22. Roller;

[0024] 31. Rotating shaft; 32. Cam;

[0025] 40. Torque detection component;

[0026] 50. Elastic components;

[0027] 60. Laser emitter;

[0028] 70. Bearing housing;

[0029] 80. Transmission belt. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0031] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0032] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0033] In this embodiment, as Figures 1 to 3 As shown, the tension measuring device is used to measure the tension of the transmission belt 80. The tension measuring device includes: a bracket, a pressure rod 20, a rotating wheel, a cam 32, and a torque detection element 40. The pressure rod 20 is buoyantly mounted on the bracket, and its first end is used to press against the transmission belt 80. A rotating shaft 31 is rotatably mounted on the bracket. The cam 32 is mounted on the rotating shaft 31 and can abut against the second end of the pressure rod 20. The rotating shaft 31 rotates to cause the pressure rod 20 to float via the cam 32. When the pressure rod 20 floats, its first end presses against the transmission belt 80 and deforms it. The torque detection element 40 is connected to the rotating shaft 31 and can detect the torque of the rotating shaft 31.

[0034] In this way, the operator drives the rotating shaft 31 to rotate via the torque detection element 40, which in turn drives the cam 32 to rotate, causing the pressure rod 20 to float. The first end of the pressure rod 20 presses against the transmission belt 80, deforming it. Furthermore, the deformation of the transmission belt 80 applies a reaction force to the pressure rod 20, which transmits this reaction force to the cam 32 and the rotating shaft 31, allowing the torque detection element 40 to detect the torque of the rotating shaft 31 and thus determine the magnitude of the reaction force. Based on the magnitude of the reaction force detected by the torque detection element 40 and the amount of deformation of the transmission belt 80, the operator can determine whether the tension of the transmission belt 80 is appropriate. Detecting the reaction force via the torque detection element 40 reduces the operator's subjective judgment, improves the accuracy of tension measurement of the transmission belt 80, and enables the transmission machinery to operate under preset conditions. Therefore, the technical solution of this embodiment effectively solves the problem of poor accuracy in measuring the tension of transmission belts in related technologies.

[0035] In this embodiment, the torque detection element 40 is a torque wrench. The pressure rod 20 is pressed against the midpoint of the transmission belt 80 in the direction of movement, and also against the midpoint of the transmission belt 80 in the width direction, to make the tension measurement more accurate. The cam 32 is covered with a rubber layer to reduce wear between the cam 32 and the pressure rod 20.

[0036] It should be noted that the deformation of the transmission belt 80 refers to the distance by which the tight side of the transmission belt 80 is recessed towards the slack side when the first end of the pressure rod 20 presses against the tight side of the transmission belt 80; or, the distance by which the slack side of the transmission belt 80 is recessed towards the tight side when the first end of the pressure rod 20 presses against the slack side of the transmission belt 80.

[0037] like Figures 1 to 3 As shown, the tension measuring device also includes a guide block 13 mounted on a bracket. The guide block 13 has a vertically extending guide hole that guides and engages with the pressure rod 20. The guide block 13 and the guide hole's engagement with the pressure rod 20 ensure the stability of the pressure rod 20 during floating, allowing it to float axially along the guide hole. This makes the floating direction of the pressure rod 20 controllable, reducing its offset or swaying during floating. This makes the torque detection element 40 more accurate in detecting the reaction force, thereby improving the accuracy and reliability of the tension measurement of the transmission belt 80.

[0038] like Figures 1 to 3 As shown, the tension measuring device also includes an elastic element 50, which abuts against the guide block 13 and the pressure rod 20. The elastic element 50 allows the pressure rod 20 to automatically reset after measurement, reducing the workload of the operator.

[0039] In this embodiment, the elastic element 50 is a spring. A spring with a small deformation coefficient is selected, and the elastic force of the spring is ignored when calculating the reaction force through the torque detection element 40. Alternatively, when calculating the reaction force through the torque detection element 40, the elastic force is calculated based on the spring's elastic coefficient and the floating distance of the pressure rod 20, and then subtracted when calculating the reaction force through the torque detection element 40.

[0040] like Figures 1 to 3 As shown, a stop flange 21 is provided at the second end of the pressure rod 20, and the elastic element 50 abuts between the stop flange 21 and the guide block 13. The cooperation between the stop flange 21 at the second end of the pressure rod 20 and the elastic element 50 can prevent the elastic element 50 from falling off or shifting during operation, and facilitate the installation and operation of the elastic element 50.

[0041] like Figures 1 to 3 As shown, the tension measuring device also includes a laser emitter 60, which is correspondingly positioned to the pressure rod 20. The laser emitter 60, corresponding to the pressure rod 20, allows for precise measurement of the floating distance of the pressure rod 20, thus revealing the deformation of the transmission belt 80 under the action of the pressure rod 20. The floating distance of the pressure rod 20 can be determined via a laser beam, providing a visual reference for the deformation of the transmission belt 80, making the measurement of the tension of the transmission belt 80 more intuitive and accurate.

[0042] In this embodiment, the torque detection element 40 detects a reaction force of 98N. The pressure rod 20 presses down, causing the transmission belt 80 to sink by 10mm to 15mm. At this point, it is determined that the tension of the transmission belt 80 is appropriate. By matching the reaction force detected by the torque detection element 40 with the sinking distance of the transmission belt 80 measured by the pressure rod 20, the tension of the transmission belt 80 can be measured more accurately, thereby ensuring that the transmission machinery operates under standard conditions.

[0043] like Figures 1 to 3 As shown, a height-adjustable mounting rod 14 is provided on the bracket, and the laser emitter 60 is mounted on the mounting rod 14. The height-adjustable mounting rod 14 on the bracket allows the laser emitter 60 to adjust its measurement height according to different transmission machinery or the height position of the pressure rod 20, adapting to the tension measurement needs of the transmission belt 80 in different equipment and positions, thus enhancing the versatility and flexibility of the device.

[0044] Furthermore, a graduated area is provided on the outer wall of the pressure rod 20, extending axially along the pressure rod 20. The graduated area on the pressure rod 20 can visually display the displacement of the pressure rod 20 before and after floating, helping operators obtain more accurate measurement data. The tension measuring device also includes a roller 22, which is rotatably mounted at the first end of the pressure rod 20. By pressing the roller 22 against the transmission belt 80, friction between the pressure rod 20 and the transmission belt 80 is reduced, avoiding damage to the transmission belt 80 and extending its service life.

[0045] In this embodiment, the laser emitted by the laser emitter 60 illuminates the scale area, making it easier for the operator to read the scale area.

[0046] In other embodiments, a graduated area is provided on the outer wall of the pressure rod 20, extending axially along the pressure rod 20. Alternatively, the tension measuring device may further include a roller 22 rotatably disposed at the first end of the pressure rod 20.

[0047] like Figures 1 to 3 As shown, the support includes a frame body 11 and support legs 12 connected to the frame body 11. The length of the support legs 12 is adjustable. The adjustable length of the support legs 12 allows the tension measuring device to be stably placed on transmission machinery equipment at different heights, adapting to various working environments and improving the adaptability and flexibility of the measuring device.

[0048] In this embodiment, the transmission belt 80 includes a tight side and a loose side located below the tight side. The bracket also includes a fixing claw connected to the bottom of the support leg 12, and the fixing claw is fixedly connected to the loose side. The frame body 11 has a length of 300mm, the maximum height of the support leg 12 is 500mm, and the frame body 11 is made of welded stainless steel plate.

[0049] In other embodiments, the outrigger 12 is fixedly connected to the ground. Alternatively, during tension measurement, both the driving wheel and the driven wheel stop rotating, and the outrigger 12 is fixedly connected to the axle of the driving wheel and the axle of the driven wheel.

[0050] like Figures 1 to 3 As shown, the support leg 12 includes a sleeve 121 and a support rod 122 telescopically disposed within the sleeve 121. The bracket also includes fasteners that pass through the sleeve 121 to fix the sleeve 121 and the support rod 122 together. The support rod 122 is connected to the frame body 11. The telescopic connection between the sleeve 121 and the support rod 122, combined with the use of fasteners, not only facilitates the adjustment of the length of the support leg 12 but also allows for quick locking of the support leg 12's position, improving the stability of the tension measuring device during measurement and facilitating installation and operation.

[0051] In other embodiments, sleeve 121 is connected to frame body 11.

[0052] like Figures 1 to 3 As shown, the tension measuring device also includes a bearing housing 70 mounted on a bracket and a bearing housed within the bearing housing 70, with the rotating shaft 31 connected to the inner ring of the bearing. The arrangement of the bearing housing 70 and the bearing facilitates the rotatable mounting of the rotating shaft 31 on the bracket, reducing friction and resistance experienced by the rotating shaft 31 during rotation. This allows the torque detection element 40 to more accurately detect the torque of the rotating shaft 31, improving the accuracy of tension measurement.

[0053] In this embodiment, the transmission belt 80 is preferably a belt. The rotating device is preferably a homogenizer, a high-pressure pump, a vacuum mixer, and an air conditioning fan.

[0054] In the description of this utility model, it should be understood that "multiple" means two or more. Directional terms such as "front, back, up, down, left, right," "horizontal, vertical, perpendicular, horizontal," and "top, bottom" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are used solely for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner or outer contours relative to the outline of each component itself.

[0055] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0056] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0057] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A tension measuring device for measuring the tension of a drive belt (80), characterized by, The tension force measuring device includes: support; A pressure bar (20) is buoyantly mounted on the bracket, and the first end of the pressure bar (20) is used to press against the transmission belt (80); A rotating shaft (31) is rotatably mounted on the bracket; A cam (32) is provided on the rotating shaft (31). The cam (32) can abut against the second end of the pressure rod (20). The rotating shaft (31) rotates to drive the pressure rod (20) to float through the cam (32). When the pressure rod (20) floats, the first end of the pressure rod (20) presses against the transmission belt (80) and deforms the transmission belt (80). A torque detection element (40) is connected to the rotating shaft (31), and the torque detection element (40) is capable of detecting the torque of the rotating shaft (31).

2. The tension measuring device of claim 1, wherein The tension measuring device also includes a guide block (13) disposed on the bracket. The guide block (13) is provided with a guide hole extending vertically, and the guide hole is guided and engaged with the pressure rod (20).

3. The tension measuring device of claim 2, wherein The tension measuring device further includes an elastic element (50), which abuts between the guide block (13) and the pressure rod (20).

4. The tension measuring device of claim 3, wherein The second end of the pressure rod (20) is provided with a stop flange (21), and the elastic element (50) abuts between the stop flange (21) and the guide block (13).

5. The tension measuring device of claim 1, wherein The tension measuring device also includes a laser emitter (60), which is correspondingly arranged with the pressure rod (20).

6. The tension measuring device of claim 5, wherein The bracket is provided with a height-adjustable mounting rod (14), and the laser emitter (60) is mounted on the mounting rod (14).

7. The tension measuring device according to claim 1, characterized in that, A graduated area is provided on the outer wall of the pressure rod (20), and the graduated area extends along the axial direction of the pressure rod (20); and / or, The tension measuring device also includes a roller (22), which is rotatably disposed at the first end of the pressure rod (20).

8. The tension measuring device of claim 1, wherein, The support includes a frame body (11) and a support leg (12) connected to the frame body (11), the length of which is adjustable.

9. The tension measuring device of claim 8, wherein, The support leg (12) includes a sleeve (121) and a support rod (122) telescopically disposed within the sleeve (121). The support also includes a fastener that passes through the sleeve (121) to fix the sleeve (121) and the support rod (122) together. One of the sleeve (121) and the support rod (122) is connected to the frame body (11).

10. The tension measuring device of claim 1, wherein, The tension measuring device also includes a bearing housing (70) mounted on the bracket and a bearing mounted in the bearing housing (70), wherein the rotating shaft (31) is connected to the inner ring of the bearing.

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