Conveyor Belt Testing System and Conveyor Belt Testing Method

Abstract

The present invention discloses a conveyor belt testing system and a conveyor belt testing method based on the conveyor belt testing system. The conveyor belt testing system includes a first frame, a guide rail, a sliding member, a first sensor, and a second sensor. The first frame extends in the horizontal direction, and the conveyor belt is sleeved on the outer peripheral side of the first frame and can rotate around the first frame; the guide rail is arranged parallel to the first frame, the sliding member can slide along the guide rail, and the sliding member can be slidably assembled between the guide rail and a part of the conveyor belt; the first sensor is connected between one end of the sliding member in the sliding direction and the first frame, and the second sensor is arranged at the other end of the sliding member in the sliding direction. The conveyor belt testing system according to the embodiment of the present invention has the advantages of being able to accurately measure the actual friction coefficient when the conveyor belt is working, and thus facilitating the guiding of the design calculation and selection of the whole machine.

Description

Technical Field

[0001] The present invention relates to the technical field of conveying equipment, and in particular, to a conveyor belt testing system and a conveyor belt testing method applied to the conveyor belt testing system. Background Art

[0002] According to the regulations of national standards and the belt conveyor design manual, the main resistance during the operation of a belt conveyor is calculated by the following formula: F H = fLg[q RO + q Ru +(2q B + q G )cosδ], where f is the simulated friction coefficient. In the process of selecting a conveyor belt in the related art, the friction coefficient is determined according to the working conditions and the manufacturing and installation level, and then the operating resistance of the belt conveyor is calculated. There are problems that it cannot be accurately measured and determined according to the actual working conditions, resulting in poor operability and great influence of human factors. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems in the related art to some extent. For this purpose, an embodiment of the present invention provides a conveyor belt testing system, which has the advantage of high measurement accuracy.

[0004] An embodiment of the present invention also provides a conveyor belt testing method.

[0005] A conveyor belt testing system according to an embodiment of the present invention includes a first frame extending in a horizontal direction, the conveyor belt is sleeved on the outer peripheral side of the first frame and can rotate around the first frame to test the conveyor belt; a guide rail and a sliding member, the guide rail is arranged parallel to the first frame, the sliding member can slide along the guide rail, and the sliding member can be slidably assembled between the guide rail and a part of the conveyor belt to be suitable for detecting the frictional force exerted on the sliding member by the conveyor belt; a first sensor and a second sensor, the first sensor is connected between one end in the sliding direction of the sliding member and the first frame, the second sensor is arranged at the other end in the sliding direction of the sliding member, and the first sensor and the second sensor detect the tensile forces at both ends when the sliding member is in tension to detect the frictional force between the sliding member and the guide rail.

[0006] The conveyor belt testing system according to an embodiment of the present invention has the advantage of being able to accurately measure the actual friction coefficient during the operation of the conveyor belt, and thus facilitating the design calculation and selection of the whole machine.

[0007] In some embodiments, the conveyor belt testing system includes a plurality of idlers. The plurality of idlers are spaced along the extending direction of the first frame between the sliding member and the conveyor belt. The idlers are rotatable relative to the sliding member, and the idlers are detachable from the sliding member.

[0008] In some embodiments, the conveyor belt testing system includes a supporting and propping assembly. The supporting and propping assembly is disposed on the first frame. One end of the supporting and propping assembly is rotatably abutted against the conveyor belt to be adapted to change the tension of the conveyor belt.

[0009] In some embodiments, the supporting and propping assembly includes a rotating member, a swinging member, a propping member and a third sensor. The propping member is disposed on the first frame, and the distance between the free end of the propping member and the first frame is adjustable. The swinging member is hinged to the free end of the propping member. The rotating member is rotatably disposed at the upper end of the swinging member and is rotatably abutted against the conveyor belt. The third sensor is disposed between the swinging member and the propping member. The swinging member is configured to transmit the tension of the conveyor belt to the third sensor so that the third sensor detects the tension of the conveyor belt.

[0010] In some embodiments, the conveyor belt testing system includes a circulating assembly. The circulating assembly is connected to the first frame. When the conveyor belt rotates on the first frame to convey materials, the circulating assembly supplies the materials unloaded by the conveyor belt to circulate to the conveyor belt.

[0011] In some embodiments, the circulating assembly includes a second frame and a circulating belt. The circulating belt is sleeved on the outer peripheral side of the second frame and is rotatable around the second frame. The second frame is arranged obliquely. The second frame includes a first end and a second end. The first end is disposed below one end of the first frame, and the second end is disposed above the other end of the first frame.

[0012] The conveyor belt testing method according to the embodiments of the present invention is based on the conveyor belt testing system described in any of the above embodiments. The conveyor belt testing method includes the following steps:

[0013] S1: Disconnect the sliding member from the conveyor belt and detect the friction coefficient between the sliding member and the guide rail;

[0014] S2: Install the conveyor belt on the sliding member and detect the actual resistance received by the conveyor belt during operation;

[0015] S3: Obtain the friction coefficient of the conveyor belt during operation based on the friction force between the sliding member and the guide rail and the total friction force received by the sliding member during the operation of the conveyor belt.

[0016] In some embodiments, detecting the frictional force between the sliding member and the guide rail in step S1 includes the following steps:

[0017] S11: Install the sliding member on the guide rail and make a gap between the sliding member and the conveyor belt;

[0018] S12: Pull the second sensor to make the sliding member receive a pulling force towards the second sensor;

[0019] S13: Gradually increase the pulling force to make the first sensor have a stable first reading F1 and the second sensor have a stable second reading F2;

[0020] S14: Obtain the friction coefficient between the sliding member and the guide rail according to the weight m of the trolley, F1 of the first sensor and F2 of the second sensor

[0021]

[0022] where m is the mass of the sliding member and g is the acceleration due to gravity.

[0023] In some embodiments, installing the conveyor belt on the sliding member and detecting the actual resistance received by the conveyor belt during operation in step S2 includes the following steps:

[0024] Install a part of the conveyor belt on the upper end of the sliding member so that the conveyor belt can slide on the upper end of the sliding member;

[0025] Uniformly spread materials on the conveyor belt, and the mass of the materials per meter of the conveyor belt is q G ;

[0026] Drive the conveyor belt to rotate around the outer peripheral sides of the first frame and the sliding member until the first sensor has a stable third reading F3;

[0027] Obtain the actual resistance received by the conveyor belt during operation according to the third reading F3 and the friction coefficient μ1 between the sliding member and the guide rail

[0028] F 实际阻力 = F3 + μ1[(q B + q G )L + mg];

[0029] where q B is the mass of the conveyor belt per unit length, q G is the mass of the materials per unit length of the conveyor belt, and L is the length of the part of the conveyor belt in contact with the upper end of the sliding member.

[0030] In some embodiments, driving the conveyor belt to rotate around the outer peripheral sides of the first frame and the sliding member until the first sensor has a stable third reading F3 further includes the following steps:

[0031] Change the belt width of the conveyor belt, the diameter of the rollers of the first frame, the spacing between multiple rollers of the first frame, the rotation speed of the conveyor belt, and the tension of the conveyor belt respectively, and record the reading F3 of the first sensor when the conveyor belt works under different parameters. Description of the Drawings

[0032] Figure 1 is a schematic structural diagram of the conveyor belt testing system according to an embodiment of the present invention.

[0033] Figure 2 is a top view schematic diagram of the conveyor belt testing system according to an embodiment of the present invention.

[0034] Figure 3 is a schematic diagram of the supporting component of the conveyor belt testing system according to an embodiment of the present invention.

[0035] Reference Signs:

[0036] Conveyor belt 1; First frame 2; Roller 21; First drive assembly 22; Sliding member 3; Supporting roller 31; Guide rail 4; Circulation assembly 5; Circulation belt 51; Loading assembly 52; Unloading assembly 53; Second drive assembly 54; Supporting component 6; Rotating member 61; Oscillating member 62; Supporting member 63; Third sensor 64; First sensor 01; Second sensor 02. Detailed Description of the Embodiment

[0037] The following describes in detail an embodiment of the present invention. The examples of the embodiment are shown in the drawings. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.

[0038] The following combines Figures 1 to 3 to describe the conveyor belt testing system according to an embodiment of the present invention.

[0039] A conveyor belt testing system according to an embodiment of the present invention includes a first frame 2, a guide rail 4, a sliding member 3, a first sensor 01, and a second sensor 02.

[0040] The first frame 2 extends in the horizontal direction. The conveyor belt 1 is sleeved on the outer peripheral side of the first frame 2 and can rotate around the first frame 2 to test the conveyor belt 1.

[0041] Specifically, the first rack 2 is horizontally arranged and extends in the left-right direction. There are multiple roller shafts 21 on the first rack 2. The roller shafts 21 extend in the front-back direction and the multiple roller shafts 21 are arranged at intervals along the length direction of the first rack 2. The conveyor belt testing system further includes a first driving assembly 22. The first driving assembly 22 is connected to the first rack 2, and the first driving assembly 22 is connected to at least one roller shaft 21 to drive the roller shaft 21 to rotate, so as to drive the conveyor belt 1 to rotate around part of the first rack 2 and the roller shafts 21 of the first rack 2, in order to test the friction coefficient of the conveyor belt 1 during actual operation.

[0042] The guide rail 4 is arranged parallel to the first rack 2. The sliding member 3 can slide along the guide rail 4, and the sliding member 3 can be slidably assembled between the guide rail 4 and part of the conveyor belt 1, so as to be suitable for detecting the frictional force exerted on the sliding member 3 by the conveyor belt 1.

[0043] Specifically, the guide rail 4 extends in the left-right direction, so that the guide rail 4 is parallel to the horizontally extending part of the conveyor belt 1. The sliding member 3 can move in the left-right direction along the guide rail 4. When the sliding member 3 moves relative to the guide rail 4 in the left-right direction, a frictional resistance is generated between the sliding member 3 and the guide rail 4. The lower end of the sliding member 3 is in sliding fit with the guide rail 4, and the upper end of the sliding member 3 can abut against the lower surface of the horizontally left-right extending part of the conveyor belt 1. When the conveyor belt 1 rotates relative to the first rack 2, a frictional force is generated between the conveyor belt 1 and the sliding member 3.

[0044] The first sensor 01 is connected between one end in the sliding direction of the sliding member 3 and the first rack 2, and the second sensor 02 is arranged at the other end in the sliding direction of the sliding member 3. The first sensor 01 and the second sensor 02 detect the tensile forces at both ends of the sliding member 3 when it is in tension to detect the frictional force between the sliding member 3 and the guide rail 4.

[0045] Specifically, the right end of the first sensor 01 is connected to the left end of the sliding member 3, and the left end of the first sensor 01 is connected to the right end of the sliding member 3. When the conveyor belt 1 abuts against the sliding member 3 and applies a rightward frictional force to the sliding member 3, or when a rightward tensile force is applied to the sliding member 3, the first sensor 01 is in tension and displays the tensile force received by the first sensor 01. The left end of the second sensor 02 is connected to the right end of the sliding member 3. When a rightward tensile force is applied to the right end of the second sensor 02, the second sensor 02 transmits the tensile force to the sliding member 3 and displays the tensile force received by the second sensor 02. The difference between the tensile force received by the second sensor 02 and the tensile force received by the first sensor 01 is the frictional force received by the sliding member 3.

[0046] In the conveyor belt testing system according to the embodiments of the present invention, by providing a guide rail 4 parallel to a part of the conveyor belt 1 and arranging a sliding member 3 that can slide along the guide rail 4 on the guide rail 4, by pulling the second sensor 02 to the right, the friction coefficient between the sliding member 3 and the guide rail 4 can be obtained according to the difference between the readings of the first sensor 01 and the second sensor 02. Thus, when the conveyor belt 1 applies a rightward frictional force to the sliding member 3, the tension received by the first sensor 01 is the frictional force applied by the conveyor belt 1 to the sliding member 3 minus the frictional force of the guide rail 4 on the conveyor belt 1. Therefore, the frictional force of the conveyor belt 1 received by the sliding member 3 can be corrected by calculation, enabling the conveyor belt testing system according to the embodiments of the present invention to measure the force condition of the conveyor belt 1 under actual working conditions, having the advantages of being able to accurately measure the actual friction coefficient when the conveyor belt 1 is working, and thus facilitating the design calculation and selection of the entire machine.

[0047] In some embodiments, the conveyor belt testing system includes a plurality of idler rollers 31. The plurality of idler rollers 31 are arranged at intervals along the extending direction of the first frame 2 between the sliding member 3 and the conveyor belt 1. The idler rollers 31 are rotatable relative to the sliding member 3, and the idler rollers 31 are detachable from the sliding member 3.

[0048] Specifically, the plurality of idler rollers 31 extend in the front-rear direction, and the rotating shafts of the idler rollers 31 rotate in the front-rear direction. When the idler rollers 31 are installed on the sliding member 3, the lower surface of the conveyor belt 1 presses on the upper ends of the idler rollers 31. When the conveyor belt 1 slides relative to the sliding member 3, the idler rollers 31 convert the sliding friction between the conveyor belt 1 and the sliding member 3 into rolling friction.

[0049] Thus, on the one hand, when the conveyor belt 1 slides relative to the sliding member 3, the idler rollers 31 convert the sliding friction between the conveyor belt 1 and the sliding member 3 into rolling friction, thereby simulating the actual working conditions when the conveyor belt 1 is working. On the other hand, the idler rollers 31 are detachable from the sliding member 3. After the idler rollers 31 are detached from the sliding member 3, the conveyor belt 1 does not contact the upper end of the sliding member 3, thus facilitating the measurement of the frictional force between the guide rail 4 and the sliding member 3 by the first sensor 01 and the second sensor 02.

[0050] In some embodiments, the conveyor belt testing system includes a support and jacking assembly 6. The support and jacking assembly 6 is arranged on the first frame 2, and one end of the support and jacking assembly 6 is rotatably abutted against the conveyor belt 1 to be adapted to change the tension of the conveyor belt 1.

[0051] Specifically, the support and jacking assembly 6 is arranged on the first frame 2. The support and jacking assembly 6 extends in the vertical direction. The position of the upper end of the support and jacking assembly 6 is adjustable in the vertical direction relative to the first frame 2, and the upper end of the support and jacking assembly 6 can abut against the lower end of a part of the conveyor belt 1, thereby adjusting the tension of the conveyor belt 1 and further affecting the frictional force between the conveyor belt 1 and the first frame 2 and the sliding member 3.

[0052] In some embodiments, the supporting component 6 includes a rotating member 61, a swinging member 62, a supporting member 63, and a third sensor 64. The supporting member 63 is disposed on the first frame 2, and the distance between the free end of the supporting member 63 and the first frame 2 is adjustable. The swinging member 62 is hinged to the free end of the supporting member 63. The rotating member 61 is rotatably disposed at the upper end of the swinging member 62 and rotatably abuts against the conveyor belt 1. The third sensor 64 is disposed between the swinging member 62 and the supporting member 63. The swinging member 62 is configured to transmit the tension force of the conveyor belt 1 to the third sensor 64 so that the third sensor 64 detects the tension force of the conveyor belt 1.

[0053] Specifically, the supporting member 63 is a jack. The supporting member 63 extends in the vertical direction. The position of the upper end of the supporting member 63 relative to the first frame 2 is adjustable in the vertical direction. The left end of the lower end of the swinging member 62 is rotatably connected to the upper end of the supporting member 63. The third sensor 64 is disposed on the right side of the connection between the swinging member 62 and the supporting member 63. When the swinging member 62 swings towards the supporting member 63, the right end of the lower end of the swinging member 62 presses against the upper end of the third sensor 64. The rotating member 61 is disposed at the upper end of the swinging member 62, and the rotation axis of the rotating member 61 extends in the front-rear direction.

[0054] Thus, when the upper end of the supporting member 63 moves upward, the conveyor belt 1 exerts a vertically downward pressure on the rotating member 61 under the action of the tension force, and the rotating member 61 transmits the pressure received by the rotating member 61 downward to the swinging member 62, so that the swinging member 62 swings towards the supporting member 63, and the right end of the lower end of the swinging member 62 presses on the third sensor 64, enabling the third sensor 64 to obtain the tension force data of the conveyor belt 1.

[0055] In some embodiments, the conveyor belt testing system includes a circulating component 5. The circulating component 5 is connected to the first frame 2. When the conveyor belt 1 rotates and conveys materials on the first frame 2, the circulating component 5 circulates the materials unloaded from the conveyor belt 1 back to the conveyor belt 1.

[0056] Specifically, when the conveyor belt testing system of the embodiments of the present invention detects the conveyor belt 1 by simulating the actual working conditions, materials are laid on the conveyor belt 1 to simulate the actual working conditions of the conveyor belt 1, making the measurement data closer to the actual values. When the conveyor belt 1 rotates, the materials on the conveyor belt 1 will be sent out from the right end of the conveyor belt 1. The circulating component 5 sends the materials falling from the right end of the conveyor belt 1 back to the left end of the conveyor belt 1 and evenly spreads the materials on the conveyor belt 1, so that the conveyor belt 1 can continuously operate to approach the actual working conditions, improving the testing accuracy of the conveyor belt testing system of the embodiments of the present invention.

[0057] In some embodiments, the circulating assembly 5 includes a second frame and a circulating belt 51. The circulating belt 51 is sleeved on the outer peripheral side of the second frame and can rotate around the second frame. The second frame is arranged obliquely. The second frame includes a first end and a second end. The first end is arranged on the lower side of one end of the first frame 2, and the second end is arranged on the upper side of the other end of the first frame 2.

[0058] Specifically, the second frame is arranged at the rear end of the first frame 2. The circulating belt 51 is sleeved on the outer peripheral side of the second frame and can rotate around the second frame. The circulating assembly 5 further includes a second driving assembly 54, a loading assembly 52, and a discharging assembly 53. The height of the left end of the second frame is greater than the height of the left end of the first frame 2, and the height of the right end of the second frame is lower than the height of the right end of the second frame.

[0059] The loading assembly 52 is arranged between the right end of the first frame 2 and the right end of the second frame to collect the materials dropped from the right end of the conveyor belt 1 when the conveyor belt 1 rotates and convey them onto the circulating belt 51 on the second frame. The discharging assembly 53 is arranged between the left end of the first frame 2 and the left end of the second frame to collect the materials dropped from the left end of the circulating belt 51 when the circulating belt 51 rotates and convey them onto the conveyor belt 1 at the left end of the first frame 2 and evenly spread the materials on the conveyor belt 1.

[0060] The second driving assembly 54 is arranged on the second frame and connected to the circulating belt 51. The second driving assembly 54 can drive the circulating belt 51 to rotate around the second frame to send the materials from the right end of the first frame 2 back to the left end of the first frame 2.

[0061] The conveyor belt testing method according to the embodiments of the present invention is based on the conveyor belt testing system in any of the above embodiments. The conveyor belt testing method includes the following steps:

[0062] S1: Disconnect the sliding member 3 from the conveyor belt 1 and detect the friction coefficient between the sliding member 3 and the guide rail 4;

[0063] S2: Install the conveyor belt 1 on the sliding member 3 and detect the actual resistance received by the conveyor belt 1 during operation;

[0064] S3: Obtain the friction coefficient of the conveyor belt 1 during operation due to friction based on the frictional force between the sliding member 3 and the guide rail 4 and the total frictional force received by the sliding member 3 when the conveyor belt 1 is operating.

[0065] Specifically, the conveyor belt testing method according to the embodiments of the present invention pulls the second sensor 02 to the right, and obtains the friction coefficient between the sliding member 3 and the guide rail 4 according to the difference between the readings of the first sensor 01 and the second sensor 02. Thus, when the conveyor belt 1 applies a rightward frictional force to the sliding member 3, the tension received by the first sensor 01 is the frictional force applied by the conveyor belt 1 to the sliding member 3 minus the frictional force of the guide rail 4 on the conveyor belt 1. Therefore, the frictional force of the conveyor belt 1 received by the sliding member 3 can be corrected by calculation, enabling the conveyor belt testing method according to the embodiments of the present invention to measure the force condition of the conveyor belt 1 under actual working conditions, having the advantages of being able to accurately measure the actual friction coefficient when the conveyor belt 1 is working, and thus facilitating the guiding of the design calculation and selection of the entire machine.

[0066] In some embodiments, detecting the frictional force between the sliding member 3 and the guide rail 4 in step S1 includes the following steps:

[0067] S11: Install the sliding member 3 on the guide rail 4 and make a gap between the sliding member 3 and the conveyor belt 1;

[0068] S12: Pull the second sensor 02 so that the sliding member 3 receives a tension force towards the second sensor 02;

[0069] S13: Gradually increase the tension force so that the first sensor 01 has a stable first reading F1 and the second sensor 02 has a stable second reading F2;

[0070] S14: Obtain the friction coefficient between the sliding member 3 and the guide rail 4 according to the weight m of the trolley, F1 of the first sensor 01, and F2 of the second sensor 02

[0071]

[0072] where m is the mass of the sliding member 3 and g is the acceleration due to gravity.

[0073] Specifically, when the sliding member 3 is not equipped with the idler 31, the lower end of the conveyor belt 1 does not contact the sliding member 3. A tension force is applied to the right end of the second sensor 02 for the second sensor 02 to transfer the tension force to the sliding member 3 and then through the sliding member 3 to the first sensor 01. When the tension force is stable, the stable reading of the second sensor 02 is F2, and the stable reading of the first sensor 01 is F1. That is, at this time, the right end of the sliding member 3 receives a tension force of F2, and the left end of the sliding member 3 applies a tension force of F1 to the first frame 2. Then the frictional force f between the sliding member 3 and the guide rail 4 = F2 - F1.

[0074] Since the magnitude of the sliding frictional force is proportional to the normal load between the contact surfaces, the normal load between the sliding member 3 and the guide rail 4 is the mass of the sliding member 3 multiplied by the acceleration due to gravity, thereby obtaining the friction coefficient between the sliding member 3 and the guide rail 4 Among them, m is the mass of the sliding member 3, and g is the acceleration due to gravity.

[0075] In some embodiments, the weight of the sliding member 3 is changed and measured multiple times to obtain the accurate friction coefficient between the sliding member 3 and the guide rail 4. The idler 31 is removed from the sliding member 3 so that the conveyor belt 1 does not contact the idler 31 on the sliding member 3. Given that the mass of the sliding member 3 is m as known from the design, a rightward pulling force is applied to the right end of the second sensor 02 until the first sensor 01 has a stable reading. The stable reading of the first sensor 01 is F1, and the stable reading of the first sensor 01 is F2. Record the data of F1, F2, and the mass m of the trolley. Then, add counterweights to the sliding member 3. The counterweight of the sliding member 3 is increased by 30 kg each time. Another set of F1 and F2 are measured in the same process, and the data is recorded. Repeat the above process for multiple experiments and record the data in Table 1.

[0076]

[0077] Table 1

[0078] Substitute multiple sets of F1 and F2 measured after changing the weight of the sliding member 3 into to obtain multiple friction coefficients μ. After performing mathematical processing such as taking the average of the multiple friction coefficients μ, the friction coefficient μ1 between the sliding member 3 and the guide rail 4 is obtained to make the friction coefficient μ1 between the sliding member 3 and the guide rail 4 close to the actual value.

[0079] In some embodiments, the steps of installing the conveyor belt 1 on the sliding member 3 and detecting the actual resistance received when the conveyor belt 1 is working in step S2 include the following steps:

[0080] Install a part of the conveyor belt 1 on the upper end of the sliding member 3 so that the conveyor belt 1 can slide on the upper end of the sliding member 3;

[0081] Lay materials evenly on the conveyor belt 1, and the mass of the materials per meter of the conveyor belt 1 is q G ;

[0082] Drive the conveyor belt 1 to rotate around the outer peripheral sides of the first frame 2 and the sliding member 3 until the first sensor 01 has a stable third reading F3;

[0083] Obtain the actual resistance received when the conveyor belt 1 is working according to the third reading F3 and the friction coefficient μ1 between the sliding member 3 and the guide rail 4

[0084] F 实际阻力 = F3 + μ1[(q B + q G )L + mg];

[0085] Among them, q B is the mass per unit length of the conveyor belt 1, and q Gq is the mass of the material on the conveyor belt 1 per unit length, and L is the length of the part of the conveyor belt 1 in contact with the upper end of the sliding member 3.

[0086] Specifically, install a part of the conveyor belt 1 on the upper end of the sliding member 3 so that the conveyor belt 1 can slide on the upper end of the sliding member 3 to make the force on the conveyor belt 1 when sliding on the upper end of the sliding member 3 close to the force when the conveyor belt 1 is working normally. Install the supporting roller 31 on the sliding member 3, start the first driving assembly 22 to drive the conveyor belt 1 to rotate on the first rack 2. After the conveyor belt 1 runs stably, evenly load the material onto the surface of the left end of the conveyor belt 1, and try to make the material evenly distributed. Measure the density of the material multiple times, and measure the cross-sectional area of the material. Obtain the weight q of the material on the conveyor belt 1 per unit length according to the density and cross-sectional area of the material. G .

[0087] Among them, μ1[(q B + q G )L + mg] is the frictional force between the sliding member 3 and the guide rail 4. The frictional force between the sliding member 3 and the guide rail 4 is added to the pulling force of the third reading F3 detected by the first sensor 01 to correct the actual resistance F received by the conveyor belt 1. 实际阻力 Thus, the conveyor belt testing method of the embodiment of the present invention can measure the frictional resistance situation received by the conveyor belt 1 under the actual working condition, has the advantage of being able to accurately measure the actual friction coefficient when the conveyor belt 1 is working, and is thus convenient for guiding the design calculation and selection of the whole machine.

[0088] In some embodiments, driving the conveyor belt 1 to rotate around the outer peripheral sides of the first rack 2 and the sliding member 3 until the first sensor 01 has a stable third reading F3 further includes the following steps:

[0089] Respectively change the tape width of the conveyor belt 1, the diameter of the roller shaft 21 of the first rack 2, the spacing between multiple roller shafts 21 of the first rack 2, the rotation speed of the conveyor belt 1, and the tension of the conveyor belt 1, and record the reading F3 of the first sensor 01 when the conveyor belt 1 is working under different parameters.

[0090] Specifically, respectively change the factors related to the friction coefficient that affect the frictional force received by the conveyor belt 1, that is, respectively change the tape width of the conveyor belt 1, the diameter of the roller shaft 21 of the first rack 2, the spacing between multiple roller shafts 21 of the first rack 2, the rotation speed of the conveyor belt 1, and the tension of the conveyor belt 1. Measure the actual resistance when the conveyor belt 1 operates under different working conditions, and obtain the actual resistance per unit length of the conveyor belt 1 when operating under different working conditions according to the length of the part of the conveyor belt 1 in contact with the upper end of the sliding member 3, so as to facilitate guiding the design calculation and selection of the whole machine.

[0091] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention 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 invention.

[0092] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0093] In the present invention, unless otherwise clearly specified and defined, the terms such as "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or capable of communicating with each other; it may be directly connected, or indirectly connected through an intermediate medium, and may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0094] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0095] In the present invention, the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0096] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Variations, modifications, substitutions, and variations made by those of ordinary skill in the art to the above embodiments are all within the scope of protection of the present invention.

Claims

1. A conveyor belt testing system, characterized in that, Comprising: A first frame, the first frame extending in a horizontal direction, the conveyor belt being sleeved on the outer peripheral side of the first frame and being rotatable around the first frame to test the conveyor belt; A guide rail and a slider, the guide rail being arranged parallel to the first frame, the slider being slidable along the guide rail, and the slider being slidably assembled between the guide rail and a part of the conveyor belt to be adapted to detect the frictional force exerted on the slider by the conveyor belt; A first sensor and a second sensor, the first sensor being connected between one end in the sliding direction of the slider and the first frame, the second sensor being arranged at the other end in the sliding direction of the slider, the first sensor and the second sensor detecting the tensile forces at both ends when the slider is in tension to detect the frictional force between the slider and the guide rail; Comprising a plurality of idler rollers, the plurality of idler rollers being arranged at intervals along the extending direction of the first frame between the slider and the conveyor belt, the idler rollers being rotatable relative to the slider, and the idler rollers being detachable from the slider; Comprising a propping component, the propping component being arranged on the first frame, one end of the propping component being rotatably abutted against the conveyor belt to be adapted to change the tension of the conveyor belt.

2. The conveyor belt testing system according to claim 1, wherein The propping component includes a rotating member, a swinging member, a propping member and a third sensor, the propping member being arranged on the first frame, and the distance of the free end of the propping member from the first frame being adjustable, the swinging member being hinged to the free end of the propping member, the rotating member being rotatably arranged at the upper end of the swinging member and being rotatably abutted against the conveyor belt, the third sensor being arranged between the swinging member and the propping member, and the swinging member being used for transmitting the tension of the conveyor belt to the third sensor so that the third sensor detects the tension of the conveyor belt.

3. The conveyor belt testing system according to claim 1, characterized in that, Comprising a circulation component, the circulation component being connected to the first frame, when the conveyor belt rotates on the first frame and conveys materials, the circulation component circulates the materials discharged by the conveyor belt to the conveyor belt.

4. The conveyor belt testing system according to claim 3, characterized in that, The circulation component includes a second frame and a circulation belt, the circulation belt being sleeved on the outer peripheral side of the second frame and being rotatable around the second frame, the second frame being arranged obliquely, the second frame including a first end and a second end, the first end being arranged below one end of the first frame, and the second end being arranged above the other end of the first frame.

5. A conveyor belt testing method, characterized in that, The conveyor belt testing method is based on the conveyor belt testing system according to any one of claims 1-4, and the conveyor belt testing method includes the following steps: S1: Disconnect the slider from the conveyor belt and detect the friction coefficient between the slider and the guide rail; S2: Install the conveyor belt on the slider and detect the actual resistance received by the conveyor belt during operation; S3: Obtain the friction coefficient of the conveyor belt during operation based on the frictional force between the slider and the guide rail and the total frictional force received by the slider during the operation of the conveyor belt.

6. The conveyor belt testing method according to claim 5, characterized in that, Detecting the frictional force between the slider and the guide rail in step S1 includes the following steps: S11: Install the slider on the guide rail and make there be a gap between the slider and the conveyor belt; S12: Pull the second sensor to make the sliding member receive a pulling force towards the second sensor; S13: Gradually increase the pulling force to make the first sensor have a stable first reading F1 and the second sensor have a stable second reading F2; S14: Obtain the friction coefficient between the sliding member and the guide rail according to the weight m of the trolley, F1 of the first sensor, and F2 of the second sensor ; where m is the mass of the sliding member and g is the acceleration due to gravity.

7. The conveyor belt testing method according to claim 6, characterized in that, In step S2, installing the conveyor belt on the sliding member and detecting the actual resistance received when the conveyor belt is working includes the following steps: Install a part of the conveyor belt on the upper end of the sliding member so that the conveyor belt can slide on the upper end of the sliding member; The material is evenly spread on the conveyor belt, and the mass of the material per meter of the conveyor belt is q G ; Drive the conveyor belt to rotate around the outer peripheral sides of the first frame and the sliding member until the first sensor has a stable third reading F3; Obtain the actual resistance received when the conveyor belt is working according to the third reading F3 and the friction coefficient μ1 between the sliding member and the guide rail ； where q B is the mass of the conveyor belt per unit length, and q G is the mass of the material on the conveyor belt per unit length, and L is the length of the part of the conveyor belt in contact with the upper end of the sliding member.

8. The conveyor belt testing method according to claim 7, characterized in that, Driving the conveyor belt to rotate around the outer peripheral sides of the first frame and the sliding member until the first sensor has a stable third reading F3 further includes the following steps: Respectively change the tape width of the conveyor belt, the diameter of the roller shaft of the first frame, the spacing between multiple roller shafts of the first frame, the rotation speed of the conveyor belt, and the tension of the conveyor belt, and record the reading F3 of the first sensor when the conveyor belt is working under different parameters.

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