Testing machine for testing friction fatigue performance of V-shaped belt of agricultural machine

Abstract

The utility model discloses a testing machine for testing the friction fatigue performance of a V-shaped belt of an agricultural machine, relates to the technical field of V-shaped belt testing machines, and provides a testing machine for testing the friction fatigue performance of the V-shaped belt of the agricultural machine. Comprising a test seat, a bearing plate mounted at the top of the test seat, and a first support frame, a second support frame and a third support frame which are positioned at the top of the bearing plate, a sample abrasion wheel is rotatably arranged outside the third support frame, and a driven wheel is rotatably arranged on the second support frame; according to the utility model, through the designed high and low temperature adjusting mechanism, the V-shaped belt main body can be covered by the upper cover in the process of testing the V-shaped belt main body, and then cold air is introduced into the upper cover according to needs to enable the V-shaped belt main body to be in a low-temperature state or air in the upper cover is heated by a resistance wire to enable the V-shaped belt main body to be in a high-temperature state; the V-shaped belt main body can be tested in a high-temperature or low-temperature weather environment, and the testing effect on the V-shaped belt main body is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of V-belt testing machines, in particular to a testing machine for testing the friction fatigue performance of agricultural machinery V-belts. Background Technique

[0002] Agricultural machinery refers to various machines used in the process of crop planting and animal husbandry production, as well as in the primary processing and treatment of agricultural and livestock products. There are V-belts on agricultural machinery, and through the V-belts, various rotating parts in the agricultural machinery can be driven to rotate. Due to the existence of friction and various external forces acting on the V-belts, they are subjected to various loads, so they are prone to friction fatigue failure. Therefore, during the production and processing of V-belts, it is necessary to test the friction fatigue performance of the V-belts, and a testing machine is used for testing during the test.

[0003] Chinese Patent Application No. 202120296727.4 discloses a belt friction fatigue performance testing machine. In this patent, the V-belt main body is sleeved on the driven wheel and the driving wheel, and the sample wear wheel is brought into contact with the V-belt main body, and then the V-belt main body is driven to rotate. At this time, friction is generated between the sample wear wheel and the V-belt main body to test the friction fatigue performance of the V-belt main body. The friction condition of the V-belt main body can be viewed through a high-speed camera. However, during the above test process, the V-belt main body is tested under room temperature conditions, while agricultural machinery is generally used in high-temperature or low-temperature weather conditions, and the V-belt main body will also be in high-temperature or low-temperature conditions. When the V-belt main body is tested under room temperature conditions, there are limitations and it cannot be tested under various weather temperature conditions, reducing the test effect of the V-belt main body. For this reason, we propose a testing machine for testing the friction fatigue performance of agricultural machinery V-belts. Content of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art; for this purpose, the utility model proposes a testing machine for testing the friction fatigue performance of agricultural machinery V-belts.

[0005] To achieve the above object, the present utility model provides the following technical solutions: A testing machine for the friction fatigue performance test of an agricultural machinery V-belt, including a test seat, a bearing plate installed on the top of the test seat, and a first support frame, a second support frame, and a third support frame located on the top of the bearing plate. A sample wear wheel is rotatably arranged outside the third support frame. A driven wheel is rotatably arranged on the second support frame. A driving wheel is rotatably arranged on the first support frame. A V-belt main body is sleeved outside the driving wheel and the driven wheel. A high and low temperature adjustment mechanism is arranged on the top of the bearing plate. The high and low temperature adjustment mechanism includes an upper cover, two groups of vertical pipes, and two groups of resistance wires. Multiple groups of blowing pipes are evenly distributed along the length direction of the vertical pipes outside the vertical pipes. The bottom of the vertical pipes extends into the interior of the bearing plate. A lower connecting pipe is arranged on the bearing plate, and both ends of the lower connecting pipe penetrate into the interior of the bearing plate and are fixedly connected to the bottom of the vertical pipes. The resistance wires are fixed on both sides of the inner wall of the upper cover.

[0006] Preferably, an upper connecting wire is arranged outside the upper cover, and both ends of the upper connecting wire extend to the inner wall of the upper cover and are fixedly connected to the ends of the resistance wires. A temperature controller is fixedly arranged on the back of the upper cover, and the end of the upper connecting wire extends into the interior of the temperature controller.

[0007] Preferably, an industrial cold air blower is fixedly arranged on the back of the test seat. A lower pipe is fixedly arranged on the top of the industrial cold air blower, and the top of the lower pipe is fixedly connected to the lower connecting pipe.

[0008] Preferably, the upper cover is located on the top of the bearing plate, and the bottom of the back of the upper cover and the top of the back of the bearing plate are rotatably connected by two groups of hinges.

[0009] Preferably, a moving member for adjusting the distance between the first support frame and the second support frame is arranged on the top of the bearing plate. The moving member includes a bidirectional lead screw and two groups of limit rods. Two groups of nut blocks are arranged outside the bidirectional lead screw. The bottoms of the first support frame and the second support frame are fixed on the tops of the nut blocks.

[0010] Preferably, a driving reduction motor is fixedly arranged on the top of the bearing plate. The working end of the driving reduction motor is fixedly connected to the end of the bidirectional lead screw. The ends of the limit rods pass through the interiors of the first support frame and the second support frame. Two groups of columns are fixedly arranged on the top of the bearing plate. Installation bearings are fixedly arranged on the tops of the columns. Both ends of the bidirectional lead screw pass through the interiors of the installation bearings.

[0011] Preferably, a high-speed camera is fixedly arranged on the second support frame, and a motor is fixedly arranged on the back of the first support frame.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] (1) Through the designed high and low temperature adjustment mechanism of the utility model, during the test of the V-belt main body, it can be covered by the upper cover, and then cold air can be introduced into the upper cover as needed to make it in a low temperature state, or the air in the upper cover can be heated by the heating wire to make it in a high temperature state, so that the V-belt main body can be tested in high or low temperature weather environments, improving the test effect of the V-belt main body.

[0014] (2) Through the designed moving part of the utility model, during use, it is convenient to adjust the distance between the first support frame and the second support frame, convenient to install or remove the V-belt main body, and can also be tested according to V-belt main bodies of different diameter sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the utility model;

[0016] Figure 2 is a schematic rear view structure diagram of the utility model;

[0017] Figure 3 is a schematic structure diagram of the utility model after the upper cover is removed;

[0018] Figure 4 is a schematic structure diagram of the first support frame and the second support frame of the utility model;

[0019] Figure 5 is a schematic structure diagram of the upper cover looking up and to the right of the utility model;

[0020] Figure 6 is a schematic structure diagram of the V-belt main body of the utility model;

[0021] In the figure: 100, bearing plate; 101, test seat; 103, first support frame; 104, specimen wear wheel; 105, third support frame; 106, second support frame; 107, driven wheel; 108, V-belt main body; 109, driving wheel; 110, high-speed camera; 200, upper cover; 201, upper connecting wire; 202, lower connecting pipe; 203, temperature controller; 204, industrial cold air blower; 205, vertical pipe; 206, blowing pipe; 207, lower pipe; 208, heating wire; 300, mounting bearing; 302, bidirectional lead screw; 303, nut block; 304, limiting rod; 305, driving reduction motor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The technical solution of the present utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0023] Embodiment 1

[0024] Please refer to Figures 1-6 , the present utility model provides a technical solution: a testing machine for the friction fatigue performance test of agricultural machinery V-belts, including a test base 101, a bearing plate 100 installed on the top of the test base 101, and a first support frame 103, a second support frame 106 and a third support frame 105 located on the top of the bearing plate 100. A sample wear wheel 104 is rotatably arranged outside the third support frame 105, a driven wheel 107 is rotatably arranged on the second support frame 106, and a driving wheel 109 is rotatably arranged on the first support frame 103. The rotation of the driving wheel 109 drives the rotation of the V-belt main body 108. The driving wheel 109 and the driven wheel 107 are sleeved with the V-belt main body 108. A high and low temperature adjustment mechanism is arranged on the top of the bearing plate 100. The high and low temperature adjustment mechanism includes an upper cover 200, two groups of vertical pipes 205 and two groups of resistance wires 208. The air located inside the upper cover 200 can be heated by the resistance wires 208; multiple groups of blowing pipes 206 are evenly distributed along the length direction of the vertical pipes 205 outside the vertical pipes 205, and cold air is blown into the interior of the upper cover 200 through the blowing pipes 206. The bottom of the vertical pipes 205 extends into the interior of the bearing plate 100. A lower connecting pipe 202 is arranged on the bearing plate 100, and both ends of the lower connecting pipe 202 penetrate into the interior of the bearing plate 100 and are fixedly connected to the bottom of the vertical pipes 205. The resistance wires 208 are fixed on both sides of the inner wall of the upper cover 200;

[0025] An upper connecting wire 201 is arranged outside the upper cover 200, and both ends of the upper connecting wire 201 extend to the inner wall of the upper cover 200 and are fixedly connected to the ends of the resistance wires 208. A temperature controller 203 is fixedly arranged on the back of the upper cover 200. The resistance wires 208 can be turned on or off through the temperature controller 203. The end of the upper connecting wire 201 extends into the interior of the temperature controller 203;

[0026] An industrial cold air blower 204 is fixedly arranged on the back of the test base 101. The industrial cold air blower 204 can generate cold air. A lower pipe 207 is fixedly arranged on the top of the industrial cold air blower 204. The top of the lower pipe 207 is fixedly connected to the lower connecting pipe 202;

[0027] The upper cover 200 is located at the top of the bearing plate 100. The bottom of the back surface of the upper cover 200 and the top of the back surface of the bearing plate 100 are rotationally connected by two sets of hinges, and the upper cover 200 can be opened or closed through the hinges. In the utility model, through the designed high and low temperature adjustment mechanism, during the test of the V-belt main body 108, it can be covered by the upper cover 200, and then cold air can be introduced into the upper cover 200 according to needs to make it in a low temperature state, or the air in the upper cover 200 can be heated by the heating wire 208 to make it in a high temperature state, so that the V-belt main body 108 can be tested in high or low temperature weather environments, improving the test effect of the V-belt main body 108.

[0028] Embodiment 2

[0029] On the basis of Embodiment 1, please refer to Figure 3 、 Figure 4 and Figure 6 , a moving member for adjusting the distance between the first support frame 103 and the second support frame 106 is provided on the top of the bearing plate 100. The moving member includes a bidirectional lead screw 302 and two groups of limit rods 304. The side view of the limit rod 304 is a concave structure. Two groups of nut blocks 303 are arranged outside the bidirectional lead screw 302. The bottoms of the first support frame 103 and the second support frame 106 are fixed on the tops of the nut blocks 303;

[0030] A driving reduction motor 305 is fixedly arranged on the top of the bearing plate 100. The driving reduction motor 305 can drive the bidirectional lead screw 302 to rotate. The working end of the driving reduction motor 305 is fixedly connected to the end of the bidirectional lead screw 302. The ends of the limit rods 304 pass through the interiors of the first support frame 103 and the second support frame 106. Two groups of columns are fixedly arranged on the top of the bearing plate 100. Mounting bearings 300 are fixedly arranged on the tops of the columns. The bidirectional lead screw 302 can be supported through the mounting bearings 300, and both ends of the bidirectional lead screw 302 pass through the interiors of the mounting bearings 300.

[0031] In the utility model, through the designed moving member, the distance between the first support frame 103 and the second support frame 106 can be conveniently adjusted during use, facilitating the installation or removal of the V-belt main body 108, and moreover, it can be tested according to the V-belt main body 108 with different diameter sizes.

[0032] In this embodiment, a high-speed camera 110 is fixedly arranged on the second support frame 106, and a motor is fixedly arranged on the back surface of the first support frame 103.

[0033] The working principle and usage process of the utility model:

[0034] When the utility model is in use, the V-belt main body 108 is sleeved on the driven wheel 107. At this time, the outer wall of the sample wear wheel 104 contacts the surface of the V-belt main body 108. Then, the opened upper cover 200 is covered. Then, the motor located on the first support frame 103 is started to drive the driving wheel 109 to rotate, so as to drive the V-belt main body 108 to rotate and start the test. When it is necessary to test the V-belt main body 108 under high-temperature conditions, the heating wire 208 is turned on through the temperature controller 203. At this time, the heating wire 208 generates heat to heat the air in the upper cover 200, so that the V-belt main body 108 is tested in a high-temperature environment; if the V-belt main body 108 needs to be tested under low-temperature conditions, the industrial cold air blower 204 is turned on. Then, the industrial cold air blower 204 conveys the cold air to the vertical pipe 205 through the lower connecting pipe 202, and then blows the cold air into the upper cover 200 through a plurality of blowing pipes 206, so that the V-belt main body 108 is tested under low-temperature conditions. The V-belt main body 108 can be tested in high-temperature or low-temperature weather environments, improving the test effect on the V-belt main body 108;

[0035] When adjusting the distance between the first support frame 103 and the second support frame 106, the driving reduction motor 305 is turned on. The driving reduction motor 305 drives the bidirectional lead screw 302 to rotate, and the two groups of nut blocks 303 located outside the bidirectional lead screw 302 move in the opposite or away directions, so as to drive the distance between the first support frame 103 and the second support frame 106 to decrease or increase.

[0036] The above embodiments are only used to illustrate the technical method of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical method of the utility model can be modified or equivalently replaced without departing from the spirit and scope of the technical method of the utility model.

Claims

1. A testing machine for the frictional fatigue performance test of V-belts for agricultural machinery, comprising a test base (101), a bearing plate (100) installed on the top of the test base (101), a first support frame (103), a second support frame (106) and a third support frame (105) located on the top of the bearing plate (100). A sample wear wheel (104) is rotatably arranged outside the third support frame (105). A driven wheel (107) is rotatably arranged on the second support frame (106). A driving wheel (109) is rotatably arranged on the first support frame (103). A V-belt body (108) is sleeved outside the driving wheel (109) and the driven wheel (107). It is characterized in that: A high and low temperature adjustment mechanism is arranged on the top of the bearing plate (100). The high and low temperature adjustment mechanism includes an upper cover (200), two groups of vertical pipes (205) and two groups of resistance wires (208); a plurality of groups of blowing pipes (206) are evenly distributed outside the vertical pipes (205) along the length direction of the vertical pipes (205). The bottom of the vertical pipes (205) extends into the bearing plate (100). A lower connecting pipe (202) is arranged on the bearing plate (100), and both ends of the lower connecting pipe (202) penetrate into the bearing plate (100) and are fixedly connected with the bottom of the vertical pipes (205). The resistance wires (208) are fixed on both sides of the inner wall of the upper cover (200).

2. The testing machine for the frictional fatigue performance test of the V-belt of agricultural machinery according to claim 1, characterized in that: An upper connecting wire (201) is arranged outside the upper cover (200), and both ends of the upper connecting wire (201) extend into the inner wall of the upper cover (200) and are fixedly connected with the ends of the resistance wires (208). A thermostat (203) is fixedly arranged on the back of the upper cover (200), and the end of the upper connecting wire (201) extends into the thermostat (203).

3. The testing machine for the frictional fatigue performance test of the V-belt of agricultural machinery according to claim 1, wherein: An industrial air cooler (204) is fixedly arranged on the back of the test seat (101). A lower pipe (207) is fixedly arranged on the top of the industrial air cooler (204), and the top of the lower pipe (207) is fixedly connected with the lower connecting pipe (202).

4. The testing machine for the friction fatigue performance test of the V-belt of agricultural machinery according to claim 1, wherein: The upper cover (200) is located on the top of the bearing plate (100). The bottom of the back of the upper cover (200) and the top of the back of the bearing plate (100) are rotationally connected by two groups of hinges.

5. The testing machine for the friction fatigue performance test of the V-belt of agricultural machinery according to claim 1, characterized in that: A moving member for adjusting the distance between the first support frame (103) and the second support frame (106) is arranged on the top of the bearing plate (100). The moving member includes a bidirectional lead screw (302) and two groups of limit rods (304). Two groups of nut blocks (303) are arranged outside the bidirectional lead screw (302). The bottoms of the first support frame (103) and the second support frame (106) are fixed on the tops of the nut blocks (303).

6. The testing machine for the frictional fatigue performance test of the V-belt of agricultural machinery according to claim 5, characterized in that: A driving reduction motor (305) is fixedly arranged on the top of the bearing plate (100). The working end of the driving reduction motor (305) is fixedly connected with the end of the bidirectional lead screw (302). The ends of the limit rods (304) penetrate through the inside of the first support frame (103) and the second support frame (106). Two groups of columns are fixedly arranged on the top of the bearing plate (100), and mounting bearings (300) are fixedly arranged on the tops of the columns. Both ends of the bidirectional lead screw (302) penetrate through the inside of the mounting bearings (300).

7. The testing machine for the friction fatigue performance test of the V-belt of agricultural machinery according to claim 1, characterized in that: A high-speed camera (110) is fixedly arranged on the second support frame (106), and a motor is fixedly arranged on the back of the first support frame (103).

Images