Pipe belt bending fatigue testing machine

Abstract

The utility model relates to the technical field of rubber conveying belt detection, in particular to a pipe belt bending fatigue testing machine which comprises a machine frame, vertical sliding rails in the vertical direction are arranged on the two sides of the machine frame, a first moving frame, a second moving frame and a third moving frame are arranged on the vertical sliding rails from top to bottom, and a bottom pressure sensor is arranged at the upper end of a bottom supporting frame. A first supporting frame is arranged on the first moving frame on the two sides of the bottom supporting frame, a first pressure sensor is arranged on the first supporting frame, a second pressure sensor is arranged on the second supporting frame, a vertical moving mechanism is arranged in the middle of the top of the rack, and a top pressure sensor is arranged at the lower end of the vertical moving mechanism. The tubular conveying belt is curled into a tubular shape, the pressure applied to the sensors by the tubular conveying belt is detected in real time through the sensors, finally the bending fatigue performance of the tubular conveying belt can be obtained through computer analysis, the detection process is automatically completed, and the device is simple, convenient, safe and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of rubber conveyor belt detection, in particular to a pipe belt bending fatigue testing machine. Background Art

[0002] In the prior art, a tubular rubber conveyor belt is curled into a tube during the conveying process, and the contact parts with the driving guide roller and the driven guide roller are unfolded into a flat structure, so it needs to be unfolded and curled repeatedly. Therefore, the bending fatigue performance of the conveyor belt is particularly important for the tubular conveyor belt. However, there is currently a lack of a detection device for the tubular conveyor belt, and there is an urgent need to design a device that is convenient for testing the bending fatigue of the tubular conveyor belt. Content of the Utility Model

[0003] The utility model provides a pipe belt bending fatigue testing machine to solve the above technical deficiencies, which can automatically curl a tubular conveyor belt and maintain its tubular structure, and continuously monitor the pressure on the corresponding support points that continuously maintain the tubular structure to analyze the bending fatigue performance of the pipe belt.

[0004] The utility model discloses a pipe belt bending fatigue testing machine, which includes a frame. Vertical slide rails in the vertical direction are arranged on both sides of the frame. A first moving frame, a second moving frame and a third moving frame are arranged on the vertical slide rails from top to bottom. A lifting mechanism is arranged on the frame. The lifting mechanism is used to drive the first moving frame, the second moving frame and the third moving frame to move and position on the vertical slide rails respectively. A bottom support frame is arranged at the middle position of the bottom of the frame. A bottom pressure sensor is arranged at the upper end of the bottom support frame. A support bar is arranged on the bottom pressure sensor. One side of the bottom support frame of the support bar extends above the support bar. A pressing bar is arranged on the bottom support frame above the support bar. Both the support bar and the pressing bar are arranged along the width direction of the frame. A first support frame is arranged on the first moving frame on both sides of the bottom support frame. A first pressure sensor is arranged on the first support frame. A support block is arranged on the first pressure sensor. A second guide rail is arranged on the second moving frame along the length direction of the frame. A second support frame is arranged on the second guide rail outside the two first support frames. A horizontal moving mechanism is arranged on the second moving frame. The horizontal moving mechanism drives the second support frame to move and position on the second guide rail. A second pressure sensor is arranged on the second support frame. A support block is arranged on the second pressure sensor. A downward third support frame is arranged on the third moving frame. A pressing roller is arranged on the third support frame. The pressing roller is arranged along the width direction of the frame. A vertical moving mechanism is arranged at the middle position of the top of the frame. A top pressure sensor is arranged at the lower end of the vertical moving mechanism. A support block is arranged at the lower end of the top pressure sensor.

[0005] For further optimization, a first guide rail is provided on the first moving frame. The first support frame is slidably arranged on the first guide rail. The first guide rail is arranged along the length direction of the frame. A horizontal moving mechanism is also provided on the first moving frame, and the horizontal moving mechanism drives the first support frame to move and position on the first guide rail.

[0006] For further optimization, a third guide rail is provided on the third moving frame. The third support frame is slidably arranged on the third guide rail. The third guide rail is arranged along the length direction of the frame. A horizontal moving mechanism is also provided on the third moving frame, and the horizontal moving mechanism drives the third support frame to move and position on the third guide rail.

[0007] For further optimization, the lifting mechanism, the horizontal moving mechanism, and the vertical moving mechanism all adopt a gear-rack mechanism.

[0008] For further optimization, the first pressure sensor is arranged on the first support frame through a rotating mechanism. The second pressure sensor is arranged on the second support frame through a rotating mechanism. Taking the rotating mechanism on the first support frame as an example, its structure is as follows: including a rotating shaft and a servo motor. A driving gear is arranged on the output shaft of the servo motor. A driven gear is arranged on the rotating shaft. The rotating shaft is arranged on the first support frame, and the servo motor is also arranged on the first support frame. The driving gear meshes with the driven gear, and the first pressure sensor is arranged on the rotating shaft.

[0009] For further optimization, one end of the pressing strip is rotatably connected to the bottom support frame through a pin shaft, and the pressing strip extends to the outside of the bottom support frame. A cylinder is arranged on the outside of the bottom support frame. The end of the cylinder is rotatably connected to the end of the pressing strip, and the cylinder is also rotatably connected to the bottom support frame.

[0010] For further optimization, a winding motor is arranged on the pressing strip. A winding disc is arranged at the output end of the winding motor. A winding rope is arranged on the winding disc. A clip is connected to the winding rope, and the clip is used for clamping the end of the pipe belt to be tested.

[0011] A pipe belt bending fatigue testing machine obtained by the present utility model curls a tubular conveyor belt into a tube shape through the rising of the first moving frame and the second moving frame and the falling of the third moving frame, and multiple sensors are used to detect the pressure applied by the tubular belt to the sensors in real time. Finally, the bending fatigue performance of the pipe belt can be obtained through computer analysis, and the detection process is automatically completed, which is simple, convenient, safe and reliable. Description of the Drawings

[0012] Figure 1 is the main structural view of the present utility model;

[0013] Figure 2 is the side structural view of the present utility model;

[0014] Figure 3 It is the top view of the structure of the present utility model;

[0015] Figure 4 It is the three-dimensional view of the structure of the present utility model. Specific embodiments

[0016] To further elaborate on the technical means and effects adopted by the present utility model to achieve the predetermined utility model purpose, the following, in combination with the accompanying drawings and preferred embodiments, details the specific embodiments, structures, features and their effects of the present utility model as follows.

[0017] Embodiment 1:

[0018] As Figures 1 - 4 shown, the present utility model discloses a pipe belt bending fatigue testing machine, including a frame 1. Vertical slide rails in the vertical direction are arranged on both sides of the frame 1. A first moving frame 2, a second moving frame 3 and a third moving frame 4 are arranged from top to bottom on the vertical slide rails. A lifting mechanism 16 is arranged on the frame 1. The lifting mechanism 16 is used to drive the first moving frame 2, the second moving frame 3 and the third moving frame 4 to move and position on the vertical slide rails respectively. A bottom support frame 5 is arranged at the middle position of the bottom of the frame 1. A bottom pressure sensor 6 is arranged at the upper end of the bottom support frame 5. A support bar is arranged on the bottom pressure sensor 6. The bottom support frame 5 on one side of the support bar extends above the support bar. A pressing bar 18 is arranged on the bottom support frame 5 above the support bar. Both the support bar and the pressing bar 18 are arranged along the width direction of the frame 1. A first support frame 7 is arranged on the first moving frame 2 on both sides of the bottom support frame 5. A first pressure sensor 8 is arranged on the first support frame 7. A support block 9 is arranged on the first pressure sensor 8; A second guide rail 26 is arranged along the length direction of the frame 1 on the second moving frame 3. A second support frame 10 is arranged on the second guide rail 26 outside the two first support frames 7. A horizontal moving mechanism 17 is arranged on the second moving frame 3. The horizontal moving mechanism 17 drives the second support frame 10 to move and position on the second guide rail 26. A second pressure sensor 11 is arranged on the second support frame 10. A support block 9 is arranged on the second pressure sensor 11; A downward third support frame 12 is arranged on the third moving frame 4. A pressing roller 13 is arranged on the third support frame 12. The pressing roller 13 is arranged along the width direction of the frame 1. A vertical moving mechanism 14 is arranged at the middle position of the top of the frame 1. A top pressure sensor 15 is arranged at the lower end of the vertical moving mechanism 14. A support block 9 is arranged at the lower end of the top pressure sensor 15.

[0019] The pipe belt refers to a tubular rubber conveyor belt. The test of the pipe belt in this embodiment means that the support block 9 on the pressure sensor is used to curl the pipe belt and maintain its tubular structure. During the process of maintaining the tubular structure of the pipe belt, the pipe belt will exert a reaction force on the corresponding sensor. The sensors at different positions transmit the numerical values of the reaction force to the computer, and the computer analyzes to obtain its flexural fatigue performance.

[0020] Before testing the tubular rubber conveyor belt, the first moving frame 2 and the second moving frame 3 both move down to the same horizontal height as the support bar on the bottom pressure sensor 6, the support block 9 on the first pressure sensor 8, and the support block 9 on the second pressure sensor 11, while the third moving frame 4 moves up to the top of the frame 1, and the vertical moving mechanism 14 also rises to the top of the frame 1. At this time, the staff places a certain length of pipe belt on the support bar and the support block 9, and the middle part of the pipe belt is located at the support bar, and the pressing strip 18 is located above the pipe belt. The gap between the support bar and the pressing strip 18 should not be too large, and it is appropriate to be equal to or slightly larger than the thickness of the pipe belt. Then the first moving frame 2 and the second moving frame 3 rise to bend the pipes on both sides of the support bar upward, and the position of the support block 9 on the first pressure sensor 8 is lower than the position of the support block 9 on the second pressure sensor 11. At the same time, the second support frame 10 drives the second pressure sensor 11 to move, and the two move closer to the middle, so as to press the pipe belt into a quasi-tubular shape. At this time, the third moving frame 4 moves down, and the pressing roller 13 on the third support frame 12 presses down the two ends of the pipe belt to form a tubular shape. Finally, the vertical moving mechanism 14 moves down, and the support block 9 on the top pressure sensor 15 is pressed on the top of the pipe belt. Then the third moving frame 4 moves up, and the pressing roller 13 is removed from the pipe belt, so that the reverse force exerted by the pipe is fully reflected on each pressure sensor, making the detection accuracy higher.

[0021] Vertical guide rails 24 are provided at the four corners of the frame 1, and the four corners of the first moving frame 2, the second moving frame 3, and the third moving frame 4 are all slidably connected to the vertical guide rails 24. And the lifting mechanisms 16 for driving the first moving frame 2, the second moving frame 3, and the third moving frame 4 are all independent, and the lifting movements between the moving frames are not affected by each other.

[0022] A first guide rail 25 is provided on the first moving frame 2, and the first support frame 7 is slidably arranged on the first guide rail 25. The first guide rail 25 is arranged along the length direction of the frame 1. A horizontal moving mechanism 17 is also provided on the first moving frame 2, and the horizontal moving mechanism 17 drives the first support frame 7 to move and position on the first guide rail 25. The first support frame 7 is also movably arranged on the first moving frame 2 through the first guide rail 25 to adjust the distance between the two first support frames 7 to better realize the bending of the pipe belt.

[0023] A third guide rail 27 is provided on the third moving frame 4. The third support frame 12 is slidably arranged on the third guide rail 27. The third guide rail 27 is arranged along the length direction of the frame 1. A horizontal moving mechanism 17 is also provided on the third moving frame 4. The horizontal moving mechanism 17 drives the third support frame 12 to move and position on the third guide rail 27. The third support frame 12 is also movably arranged on the third moving frame 4 through the third guide rail 27, so that the distance between the pressure rollers 13 on the third support frame 12 can be adjusted. In the actual use process, the third pressure roller 13 is first lowered to a suitable height and then moved closer to the middle, which can better bend the conveyor belt into a tubular shape. According to actual needs, the two third support frames 12 can move closer to the middle successively, and the two ends of the pipe belt can be bent successively to form partial lamination. Finally, the support block 9 on the top pressure sensor 15 is used to keep the pipe belt in a tubular structure.

[0024] The lifting mechanism 16, the horizontal moving mechanism 17, and the vertical moving mechanism 14 all adopt a gear-rack mechanism.

[0025] The gear-rack mechanism is a structure driven by a motor, a gear, and a rack in cooperation, and it is a known structure in the art. Specifically as follows:

[0026] Lifting mechanism 16: A rack is provided on the side of each vertical guide rail 24. A motor and a gearbox are provided on each of the first lifting frame, the second lifting frame, and the third lifting frame at the corresponding end. The output shaft of the gearbox extends to the two racks on both sides of the same end, and two gears are provided on the output shaft. The two gears are meshed with the corresponding racks. The motors at both ends of the first lifting frame move synchronously, the motors at both ends of the second lifting frame also need to move synchronously, and the motors at both ends of the third lifting frame also need to move synchronously. During the rotation of the motor, the output shaft and the gears are driven by the gearbox to rotate, so as to realize the relative movement between the gears and the racks. Since the racks are fixed, the corresponding lifting frames complete the lifting movement. The gearbox used can be a worm and gear gearbox, so that when the motor stops moving, the gearbox has a self-locking function to position the corresponding moving frame and keep the whole stable.

[0027] The structures and installation forms of the horizontal moving mechanisms 17 on the first moving frame 2, the second moving frame 3, and the third moving frame 4 are the same. Therefore, in this embodiment, the horizontal moving mechanism 17 on the first moving frame 2 is used for structure description.

[0028] Horizontal movement mechanism 17: A rack is arranged on the side of the first guide rail 25 on both sides of the first moving frame 2. A motor and a gearbox are arranged on the first support frame 7. The output shaft of the gearbox extends to the racks at both ends, and gears are arranged at both ends of the output shaft. The gears are engaged with the racks. When the motor drives the output shaft and the racks to rotate through the gearbox, the gears and the racks move relative to each other, thereby changing the position of the first support frame 7. The gearbox used can be a worm and gear gearbox. In this way, when the motor stops moving, the gearbox has a self-locking function to position the first support frame 7 and keep the whole stable.

[0029] Vertical movement mechanism 14: A rack is arranged in the vertical direction at the top of the frame 1. The rack is movably connected to the frame 1 in the vertical direction. It can be that the rack is slidably connected to the frame 1, or a slide rail is arranged on the frame 1, the slide rail can be lifted and lowered, and the rack is fixed on the slide rail. The top pressure sensor 15 is arranged at the lower end of the rack. A motor and a gearbox are arranged on the frame 1. The output shaft of the gearbox extends to the rack, and a gear is arranged on the output shaft. The gear is engaged with the rack. In actual use, the motor drives the output shaft and the gear of the gearbox to rotate. Since the positions of the motor and the gearbox are fixed, the rack moves up and down, so that the top pressure sensor 15 at the end of the rack moves vertically. The gearbox used can be a worm and gear gearbox. In this way, when the motor stops moving, the gearbox has a self-locking function to position the top pressure sensor 15 and keep the whole stable.

[0030] The first pressure sensor 8 is arranged on the first support frame 7 through the rotating mechanism 23, and the second pressure sensor 11 is arranged on the second support frame 10 through the rotating mechanism 23. Taking the rotating mechanism 23 on the first support frame 7 as an example, its structure is: including a rotating shaft and a servo motor. A driving gear is arranged on the output shaft of the servo motor, a driven gear is arranged on the rotating shaft, the rotating shaft is arranged on the first support frame 7, the servo motor is also arranged on the first support frame 7, the driving gear is engaged with the driven gear, and the first pressure sensor 8 is arranged on the rotating shaft.

[0031] The connection form and function of the first pressure sensor 8 on the first support frame 7 are the same as those of the second pressure sensor 11 on the second support frame 10. Therefore, the structural forms of the rotating mechanisms 23 adopted by both are the same. Only the rotating mechanism 23 on the first support frame 7 will be described in this embodiment. The rotating shaft on the first support frame 7 can be driven by a servo motor to rotate the driving gear, and the driving gear drives the meshing driven gear to rotate, thereby realizing the rotation of the rotating shaft. During the rotation of the rotating shaft, the position and orientation of the first pressure sensor 8 fixed on the rotating shaft can be changed, so that the support block 9 on the first pressure sensor 8 fits more closely with the bent pipe belt, with a larger contact area, and the reaction force generated by the pipe belt can all act on the pressure-bearing direction of the first pressure sensor 8. The optimal solution is to rotate the first pressure sensor 8 until its pressure-bearing direction is the radial direction of the pipe belt after forming, so that the reaction force of the pipe belt detected by the first pressure sensor 8 is more accurate. At the same time, when testing different pipelines, the direction of the first pressure sensor 8 can be adjusted according to different requirements.

[0032] One end of the pressing strip 18 is rotatably connected to the bottom support frame 5 through a pin shaft, and the pressing strip 18 extends outward from the bottom support frame 5. A cylinder 19 is arranged outside the bottom support frame 5. The end of the cylinder 19 is rotatably connected to the end of the pressing strip 18, and the cylinder 19 is also rotatably connected to the bottom support frame 5. This form can use the cylinder 19 to drive the pressing strip 18 to rotate, which is convenient for placing the pipe belt to be tested above the support strip and pressing the pressing strip 18 on the pipe belt, with simple operation, stability and reliability.

[0033] A winding motor 20 is arranged on the pressing strip 18. A winding disc is arranged at the output end of the winding motor 20. A winding rope 21 is arranged on the winding disc. A clip 22 is connected to the winding rope 21, and the clip 22 is used to clamp the end of the pipe belt to be tested. By using the clip 22 to fix the end of the pipe belt, during the bending process, while the pipe belt is curled by the support block 9 on the first pressure sensor 8, the support block 9 on the second pressure sensor 11, the pressure roller 13, etc., the winding motor 20 rotates to contract the winding rope 21, so as to bend one end of the pipe belt inward, making the bending of the pipe belt smoother, and at the same time ensuring that the end clamped by the clip 22 can be located inside the overlapping part of the pipe belt. During the actual detection process, the winding motor 20 can retract a part of the winding rope 21 so that the winding rope 21 does not generate tension, thus not affecting the detection accuracy.

[0034] In this embodiment, the number of the bottom pressure sensor 6, the first pressure sensor 8, the second pressure sensor 11, the third pressure sensor, and the top pressure sensor 15 can all be two, and the corresponding sensors are arranged at intervals along the width direction of the frame 1, so as to more stably detect the pressure after the tape is bent.

[0035] Of course, in other embodiments, the number of the same sensors may be three or more, or only one may be adopted.

[0036] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "a plurality" is two or more, unless otherwise specifically and clearly defined.

[0037] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0038] In the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0039] The above are only the preferred embodiments of the present utility model and do not impose any formal limitations on the present utility model. Although the present utility model has been disclosed above with the preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to equivalent embodiments by using the above-disclosed technical content without departing from the scope of the technical solution of the present utility model. However, as long as it does not depart from the content of the technical solution of the present utility model, any simplification, modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A pipe belt bending fatigue testing machine, comprising a frame, characterized in that: Vertical slide rails in the vertical direction are provided on both sides of the frame. On the vertical slide rails, there are a first moving frame, a second moving frame, and a third moving frame from top to bottom. An elevating mechanism is provided on the frame. The elevating mechanism is used to drive the first moving frame, the second moving frame, and the third moving frame to move and position on the vertical slide rails respectively. A bottom support frame is provided at the middle position of the bottom of the frame. A bottom pressure sensor is provided at the upper end of the bottom support frame. A support bar is provided on the bottom pressure sensor. One side of the bottom support frame of the support bar extends above the support bar. A pressing bar is provided on the bottom support frame above the support bar. The support bar and the pressing bar are both arranged along the width direction of the frame. A first support frame is provided on the first moving frame on both sides of the bottom support frame. A first pressure sensor is provided on the first support frame. A support block is provided on the first pressure sensor. A second guide rail is arranged along the length direction of the frame on the second moving frame. A second support frame is provided on the second guide rail outside the two first support frames. A horizontal moving mechanism is provided on the second moving frame. The horizontal moving mechanism drives the second support frame to move and position on the second guide rail. A second pressure sensor is provided on the second support frame. A support block is provided on the second pressure sensor. A downward third support frame is provided on the third moving frame. A pressing roller is provided on the third support frame. The pressing roller is arranged along the width direction of the frame. A vertical moving mechanism is provided at the middle position of the top of the frame. A top pressure sensor is provided at the lower end of the vertical moving mechanism. A support block is provided at the lower end of the top pressure sensor.

2. The pipe belt bending fatigue testing machine according to claim 1, characterized in that: at A first guide rail is provided on the first moving frame. The first support frame is slidably arranged on the first guide rail. The first guide rail is arranged along the length direction of the frame. A horizontal moving mechanism is also provided on the first moving frame. The horizontal moving mechanism drives the first support frame to move and position on the first guide rail.

3. The pipe belt bending fatigue testing machine according to claim 1, characterized in that: A third guide rail is provided on the third moving frame. The third support frame is slidably arranged on the third guide rail. The third guide rail is arranged along the length direction of the frame. A horizontal moving mechanism is also provided on the third moving frame. The horizontal moving mechanism drives the third support frame to move and position on the third guide rail.

4. A pipe belt bending fatigue testing machine according to claim 1 or 2 or 3, characterized in that: The elevating mechanism, the horizontal moving mechanism, and the vertical moving mechanism all adopt a gear-rack mechanism.

5. The pipe belt bending fatigue testing machine according to claim 4, characterized in that: The first pressure sensor is arranged on the first support frame through a rotating mechanism. The second pressure sensor is arranged on the second support frame through a rotating mechanism. Taking the rotating mechanism on the first support frame as an example, its structure is: including a rotating shaft and a servo motor. A driving gear is provided on the output shaft of the servo motor. A driven gear is provided on the rotating shaft. The rotating shaft is arranged on the first support frame. The servo motor is also arranged on the first support frame. The driving gear meshes with the driven gear. The first pressure sensor is arranged on the rotating shaft.

6. The pipe belt bending fatigue testing machine according to claim 1, characterized in that: One end of the pressing bar is rotatably connected to the bottom support frame through a pin shaft, and the pressing bar extends to the outside of the bottom support frame. A cylinder is provided outside the bottom support frame. The end of the cylinder is rotatably connected to the end of the pressing bar. The cylinder is also rotatably connected to the bottom support frame.

7. The belt conveyor bending fatigue testing machine according to claim 6, characterized in that: A winding motor is provided on the layering strip, a winding disc is provided at the output end of the winding motor, a winding rope is provided on the winding disc, and a clip is connected to the winding rope. The clip is used for clamping the end of the pipe belt to be tested.

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