Rolling resistance testing machine for rubber conveying belt

Abstract

The utility model relates to the technical field of rubber conveying belt detection, in particular to a rolling resistance testing machine of a rubber conveying belt, which comprises a main frame and a support frame, a driving roller is arranged at one end of the main frame, a tensioning roller is arranged at the other end of the main frame, and the support frame is arranged in the main frame. Two sides of the support frame are respectively provided with two vertically upward vertical load connecting rods at intervals, a top frame is arranged at the tops of the four vertical load connecting rods, a vertically downward connecting screw rod is arranged on the top frame, shaft seats are arranged on the connecting screw rod, and a measuring roller is arranged between the shaft seats. One side of the supporting frame is rotationally connected with a mounting frame through a pin shaft, the pin shaft is arranged on one side of the mounting frame, an alignment roller is arranged on the mounting frame, and an air spring is arranged between the mounting frame and the supporting frame. The rolling resistance testing machine for the rubber conveying belt can accurately detect the rolling resistance of the rubber conveying belt, and can perform repeated measurement for multiple times so as to improve the measurement precision.

Description

Technical Field

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

[0002] In the prior art, for the rolling resistance test of the conveyor belt, such as Chinese utility model patent: 2017205809774, a conveyor belt rolling resistance testing machine, the disclosed content is to place a roller on the conveyor belt, use a traction unit and a steel cable to drive the roller to roll on the conveyor belt, and set weight loading devices at both ends of the roller to increase the pressure between the roller and the conveyor belt.

[0003] In this measurement form, the weight loading device will shake during the actual measurement process, causing the pressure between the roller and the conveyor belt to be unstable, and thus the measured rolling resistance value is unstable. In addition, the roller can only move in one direction on the conveyor belt, so the measurement data is less and the accuracy is low. Utility Model Content

[0004] In order to solve the above technical deficiencies, the utility model provides a rolling resistance testing machine for a rubber conveyor belt, which can accurately measure the rolling resistance of the rubber conveyor belt, and the measurement is stable and reliable.

[0005] The utility model discloses a rolling resistance testing machine for a rubber conveyor belt, comprising a main frame and a supporting frame, wherein a driving roller is arranged at one end of the main frame, a tensioning roller is arranged at the other end of the main frame, a supporting frame is arranged inside the main frame, two vertical load connecting rods are arranged vertically upward at intervals on both sides of the supporting frame, a top frame is arranged on the top of the four vertical load connecting rods, a connecting screw rod is arranged vertically downward on the top frame, an axle seat is arranged on the connecting screw rod, a measuring roller is arranged between the axle seats, the connecting screw rod is used to adjust the position of the measuring roller relative to the top frame, a mounting frame is rotatably connected to one side of the supporting frame through a pin shaft, the pin shaft is arranged on one side of the mounting frame, an alignment roller is arranged on the mounting frame, and a positioning roller is arranged on the other side of the mounting frame. An air spring is arranged between the side and the support frame, and the air spring drives the mounting frame to rotate around the pin shaft, so as to adjust the position of the alignment roller. The rubber conveyor belt to be tested is wound between the driving roller and the tensioning roller, and the rubber conveyor belt to be tested passes between the alignment roller and the measuring roller; vertical load sensors are arranged between the ends of the four vertical load connecting rods and the top frame, and the vertical load sensors are used to detect the vertical load force between the vertical load connecting rods and the top frame; a cross bar is arranged between the shaft seats at both ends of the measuring roller, and rolling resistance sensors are arranged at both ends of the cross bar through adjusting screws, and the ends of the rolling resistance sensors are fixed on the main frame; a torque sensor is arranged at one end of the measuring roller for detecting the torque of the measuring roller.

[0006] Guide rods are arranged on the shaft seats at both ends of the tensioning roller, guide sleeves are arranged on the main frame corresponding to the guide rods, and tightening bolts are arranged on the main frame. The tightening bolts are used to limit the position of the guide rods in the guide sleeves. Belt tension sensors are arranged between the tightening bolts and the guide rods on both sides to detect the tension of the rubber conveyor belt to be tested.

[0007] A lateral force sensor is arranged on the shaft seat at one end of the measuring roller, and a mounting body is arranged on the main frame. The mounting body extends to the side of the measuring roller, and the lateral force sensor is mounted on the mounting body.

[0008] A deviation-correcting roller is arranged on the main frame, and the deviation-correcting roller is located between the tensioning roller and the driving roller.

[0009] The utility model provides a rolling resistance testing machine for a rubber conveyor belt, which can accurately detect the rolling resistance of the rubber conveyor belt and can perform repeated measurements for multiple times to improve the measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0011] Figure 2 This is the structural front view of the utility model;

[0012] Figure 3 It is a top view of the structure of the utility model. DETAILED DESCRIPTION

[0013] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0014] Embodiment 1:

[0015] like Figure 1 , Figure 2 , Figure 3As shown, the utility model discloses a rolling resistance testing machine for a rubber conveyor belt, comprising a main frame 1 and a support frame 4, wherein a driving roller 2 is arranged at one end of the main frame 1, a tensioning roller 3 is arranged at the other end of the main frame 1, a support frame 4 is arranged inside the main frame 1, two vertical load connecting rods 5 vertically upward are arranged at intervals on both sides of the support frame 4, a top frame 6 is arranged on the top of the four vertical load connecting rods 5, a vertical downward connecting screw 8 is arranged on the top frame 6, an axle seat is arranged on the connecting screw 8, a measuring roller 7 is arranged between the axle seats, the connecting screw 8 is used to adjust the position of the measuring roller 7 relative to the top frame 6, a mounting frame 9 is rotatably connected to one side of the support frame 4 through a pin shaft, the pin shaft is arranged on one side of the mounting frame 9, an alignment roller 10 is arranged on the mounting frame 9, and the other side of the mounting frame 9 is connected to the support frame 4 An air spring 20 is arranged between them, and the air spring 20 drives the mounting frame 9 to rotate around the pin shaft, so as to adjust the position of the alignment roller 10. The rubber conveyor belt 19 to be tested is wound between the driving roller 2 and the tensioning roller 3, and the rubber conveyor belt 19 to be tested passes between the alignment roller 10 and the measuring roller 7; vertical load sensors 11 are arranged between the ends of the four vertical load connecting rods 5 and the top frame 6, and the vertical load sensors 11 are used to detect the vertical load force between the vertical load connecting rods 5 and the top frame 6; a cross bar 21 is arranged between the shaft seats at both ends of the measuring roller 7, and rolling resistance sensors 12 are arranged at both ends of the cross bar 21 through adjusting screws 13, and the ends of the rolling resistance sensor 12 are fixed on the main frame 1; a torque sensor 14 is arranged at one end of the measuring roller 7 for detecting the torque of the measuring roller 7.

[0016] Before normal testing, the rubber conveyor belt 19 to be tested needs to be assembled on the driving roller 2 and the tensioning roller 3, and the rubber conveyor belt 19 to be tested needs to be kept in a tensioned state by the tensioning roller 3. The driving roller 2 is equipped with a motor, and the driving roller 2 can rotate by itself. It is an existing product, and the specific structure is not described and limited here. The rubber conveyor belt 19 to be tested passes between the measuring roller 7 and the alignment roller 10. After the rubber conveyor belt 19 to be tested is assembled, the positions of the alignment roller 10 and the measuring roller 7 need to be adjusted.

[0017] Specific adjustment process: Apply a certain air pressure to the air spring 20, generally set to 1 bar, and make sure that the alignment roller 10 is in contact with the conveyor belt and does not tighten the conveyor belt. At this time, measure whether the central axis of the alignment roller 10 and the central axis of the measuring roller 7 are in the same vertical plane, and a laser instrument can be used to assist in the measurement. If the two are not in the same vertical plane, the connecting screw 8 can be adjusted to change the position of the measuring roller 7, and then the air spring 20 can be used to drive the mounting frame 9 to rotate around the pin to change the position of the alignment roller 10, and finally achieve that the central axis of the measuring roller 7 is in the same vertical plane.

[0018] The four vertical load sensors 11 are connected between the vertical load connecting rod 5 and the top frame 6 through corresponding bolts, and the sum of the pressure values ​​of the four vertical load sensors 11 is the total load force. The required total load force is achieved by adjusting the pressure of the air spring 20. After the required total load force is reached, the vertical load forces of the four vertical load sensors 11 are detected. The vertical load forces of the two vertical load sensors 11 on the radial sides of the measuring roller 7 need to be basically the same, and the difference in vertical load forces of the two vertical load sensors 11 on the same side of the measuring roller 7 is within 10KG. If the vertical load force difference of the two vertical load sensors 11 on the same side is too large, it is necessary to adjust the corresponding bolts to adjust the vertical load force, but the total load force needs to be kept to meet the required requirements.

[0019] Then adjust the value of the rolling resistance sensor 12 by adjusting the screw 13 so that the resultant force value of the rolling resistance sensors 12 on both sides is substantially zero.

[0020] Finally, the rolling resistance of the rubber conveyor belt 19 to be tested is tested. The driving roller 2 is started, and the driving roller 2 drives the rubber conveyor belt 19 to be tested to move. The driving roller 2 can rotate forward or reverse, and the rolling resistance sensor 12 will measure a value, and the required value is obtained according to the actual value. In addition, the torque sensor 14 at the end of the measuring roller 7 can measure the torque value of the measuring roller 7.

[0021] Finally, the required rolling resistance value is calculated through various measurement data, and the value is accurate.

[0022] A guide rod 15 is arranged on the shaft seat at both ends of the tensioning roller 3, a guide sleeve 16 is arranged on the main frame 1 corresponding to the guide rod 15, and a tightening bolt 17 is arranged on the main frame 1. The tightening bolt 17 is used to limit the position of the guide rod 15 in the guide sleeve 16. A belt tension sensor 18 is arranged between the tightening bolts 17 and the guide rods 15 on both sides to detect the tension of the rubber conveyor belt 19 to be tested. The shaft seats at both ends of the tensioning roller 3 cooperate with the guide sleeve 16 on the main frame 1 through the guide rod 15, and are tightened by the tightening bolts 17. This structure is a known structure. The belt tension sensor 18 arranged between the tightening bolt 17 and the guide rod 15 is actually a pressure sensor, which measures the pressure between the tightening bolt 17 and the guide rod 15, so that the tension degree at both ends of the tensioning roller 3 can be basically adjusted to be consistent, thereby ensuring that the rubber conveyor belt 19 to be tested can maintain balance during assembly. During operation, the pressure on both sides can also be fine-tuned to correct the conveyor belt to improve the accuracy of subsequent measurements.

[0023] A lateral force sensor 22 is provided on the shaft seat at one end of the measuring roller 7, and a mounting body is provided on the main frame 1, the mounting body extending to the side of the measuring roller 7, and the lateral force sensor 22 is mounted on the mounting body. The lateral force sensor 22 can detect the position of the measuring roller 7 during the adjustment process to ensure its stability and reliability.

[0024] A deflection correction roller is arranged on the main frame 1, and the deflection correction roller is located between the tensioning roller 3 and the driving roller 2. The structure of the deflection correction roller is an existing known structure, which can keep the conveyor belt running stably, thereby improving the test accuracy.

[0025] The above-mentioned vertical load sensor 11, belt tension sensor 18, rolling resistance sensor 12, torque sensor 14, lateral pressure sensor, air spring 20 and other components are all existing known products.

[0026] The specific rolling resistance calculation formula can be: F' E =(|F M，h，li -F M，h，re |-2×F R )÷2B. Among them, F M，h，li is the average rolling resistance during forward rotation, F M，h，re is the average rolling resistance during reversal, F R is the rolling resistance converted from torque, 2×F R It is the sum of rolling resistance converted from torque during forward and reverse rotation, and B is the bandwidth.

[0027] Of course, the calculation formula for rolling resistance may be different under different usage conditions and requirements.

[0028] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are 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 therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0029] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be an interactive relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0030] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0031] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simplified modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A rolling resistance testing machine for a rubber conveyor belt, characterized in that: The invention comprises a main frame and a support frame, wherein a driving roller is arranged at one end of the main frame, a tensioning roller is arranged at the other end of the main frame, a support frame is arranged inside the main frame, two vertical load connecting rods are arranged vertically upward at intervals on both sides of the support frame, a top frame is arranged on the top of the four vertical load connecting rods, a connecting screw rod is arranged vertically downward on the top frame, an axle seat is arranged on the connecting screw rod, a measuring roller is arranged between the axle seats, the connecting screw rod is used to adjust the position of the measuring roller relative to the top frame, a mounting frame is rotatably connected to one side of the support frame through a pin shaft, the pin shaft is arranged on one side of the mounting frame, an alignment roller is arranged on the mounting frame, and an air Spring, the air spring drives the mounting frame to rotate around the pin shaft, so as to adjust the position of the alignment roller, the rubber conveyor belt to be tested is wound between the driving roller and the tensioning roller, and the rubber conveyor belt to be tested passes between the alignment roller and the measuring roller; vertical load sensors are arranged between the ends of the four vertical load connecting rods and the top frame, and the vertical load sensors are used to detect the vertical load force between the vertical load connecting rods and the top frame; a cross bar is arranged between the shaft seats at both ends of the measuring roller, and rolling resistance sensors are arranged at both ends of the cross bar through adjusting screws, and the ends of the rolling resistance sensors are fixed on the main frame; a torque sensor is arranged at one end of the measuring roller for detecting the torque of the measuring roller.

2. A rolling resistance testing machine for a rubber conveyor belt according to claim 1, characterized in that: Guide rods are arranged on the shaft seats at both ends of the tensioning roller, guide sleeves are arranged on the main frame corresponding to the guide rods, and tightening bolts are arranged on the main frame. The tightening bolts are used to limit the position of the guide rods in the guide sleeves. Belt tension sensors are arranged between the tightening bolts and the guide rods on both sides to detect the tension of the rubber conveyor belt to be tested.

3. The rolling resistance testing machine for a rubber conveyor belt according to claim 1, characterized in that: A lateral force sensor is arranged on the shaft seat at one end of the measuring roller, and a mounting body is arranged on the main frame. The mounting body extends to the side of the measuring roller, and the lateral force sensor is mounted on the mounting body.

4. The rolling resistance testing machine for a rubber conveyor belt according to claim 1, characterized in that: A deviation-correcting roller is arranged on the main frame, and the deviation-correcting roller is located between the tensioning roller and the driving roller.

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