Device for testing strength of agricultural machinery parts

Abstract

The invention provides an agricultural machinery part strength testing device, and relates to the technical field of agricultural machinery parts. The test board is of a rectangular plate structure, and two sides of the top of the test board are each provided with a set of sliding groove structure. A mounting plate is fixedly arranged at the top of the test board; a group of first sliding blocks with U-shaped block structures are arranged in the sliding grooves in the two sides of the top of the test board in a sliding manner; a fixing plate of a circular plate structure is fixedly arranged on the front side of the first sliding block. Three groups of mounting rods with L-shaped rod structures are fixedly arranged on the outer side of the fixed plate in an annular array shape; a first connecting plate is fixedly arranged at one end of the mounting rod; a first screw rod is rotationally arranged on one side of the first connecting plate; a sliding plate is slidably arranged on the outer side of one end of the mounting rod; the accuracy of test data can be improved, and the accuracy of the device is improved; the problem that the accuracy of detection data cannot be ensured due to the fact that the abnormal state of the transmission belt cannot be found at the first time is solved.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural machinery accessories, and in particular to a testing device for the strength of agricultural machinery accessories. Background Art

[0002] The transmission belt in agricultural machinery is responsible for driving the operation of various auxiliary mechanisms. Tractors equipped with pulleys can perform various fixed operations, such as pumping water, threshing and power generation. If the transmission belt breaks or slips, the performance of the agricultural machinery will be reduced, which will directly affect the normal use of the agricultural machinery. The most common is the triangular transmission belt. During production, it is usually necessary to test the strength of the transmission belt.

[0003] However, the current transmission belt strength detection device still has the following shortcomings: When conducting strength testing, the transmission belt is usually required to be tested under normal use. However, during the rotation of the transmission belt, it is difficult to effectively and timely monitor the condition of the transmission belt. This makes it impossible to discover the abnormal state of the transmission belt in the first place, and therefore the accuracy of the test data cannot be guaranteed, which has certain limitations. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a testing device for the strength of agricultural machinery accessories to solve the problem raised in the above background technology that it is difficult to effectively and timely monitor the condition of the transmission belt during its rotation, which makes it impossible to discover the abnormal state of the transmission belt in the first time, and therefore cannot guarantee the accuracy of the detection data, which has certain limitations.

[0005] The present invention provides a testing device for the strength of agricultural machinery accessories, specifically comprising: a test bench; the test bench adopts a rectangular plate structure, and a group of slide groove structures are opened on both sides of the top of the test bench, a through-type rectangular through-groove structure is opened on the top of the test bench, and a group of through-type circular through-groove structures are opened on both sides of the top of the test bench; a mounting plate is fixedly arranged on the top of the test bench; a group of first sliding blocks of U-shaped block structure are slidably arranged in the slide grooves on both sides of the top of the test bench, and a through-type screw hole structure is opened on one side of the bottom of the first sliding block; a fixing plate of a circular plate structure is fixedly arranged on the front side of the first sliding block; three groups of mounting rods of L-shaped rod structures are fixedly arranged on the outer side of the fixing plate in a ring array; a first connecting plate is fixedly arranged on one end of the mounting rod; a first screw rod is rotatably arranged on one side of the first connecting plate; a sliding plate is slidably arranged on the outer side of one end of the mounting rod, and the sliding plate is connected to the first screw rod by threaded cooperation.

[0006] Furthermore, a control panel is fixedly provided at one end of the front side of the test bench, and an emergency stop switch is provided on the top of the control panel; a bidirectional lead screw is rotatably provided in a slide groove on the top of the test bench, and the bidirectional lead screw is respectively connected to the two groups of first sliders by threaded cooperation; a first motor is fixedly provided on one side of the test bench, and the first motor is transmission-connected to the bidirectional lead screw; a second motor is fixedly provided on the rear side of the top end of the first slider; a rotating wheel is rotatably provided on the front side of the first slider, and the rotating wheel is transmission-connected to the second motor; sliding frames with I-shaped structures are slidably provided in the circular through grooves on both sides of the top of the test bench, and springs are sleeved on the outer side of the sliding frames; a counterweight block is sleeved on the outer side of the top end of the sliding frame; an extrusion block with a rectangular block structure is fixedly provided in the middle of the sliding frame.

[0007] Furthermore, a group of first sliding rods with a cylindrical structure are fixedly provided on both sides of the top of the control panel, and a spring structure is sleeved on the outer side of the first sliding rod; a pressure plate with a T-shaped plate structure is slidably provided on the outer side of the two groups of first sliding rods, and a pin hole structure is opened on the top of the pressure plate; a slide rail is fixedly provided on the right side of the top of the test bench; a second sliding rod with a cylindrical structure is fixedly provided on the inner side of the slide rail, and a spring is sleeved on the outer side of the second sliding rod; a second slider with a rectangular block structure is slidably provided on the inner side of the slide rail; a pin rod is fixedly connected to one side of the second slider; four groups of winding rollers are equidistantly arranged and rotatably provided on the top of the second slider; a worm gear is fixedly provided on the outer side of the rotating shaft of the winding roller; a worm is rotatably provided on the top of the second slider, and the worm is meshingly connected to the worm gear.

[0008] Furthermore, a second connecting plate of a U-shaped plate structure is fixedly provided on one side of the sliding plate, and three groups of through-type circular through-slot structures are arranged on one side of the second connecting plate; three groups of third sliding rods of cylindrical structure are slidably provided in the circular through-slot of the second connecting plate, and a through-type circular through-slot structure is provided at one end of the third sliding rod, a pull rope is provided at the front end of the third sliding rod, and the pull rope at the front end of the third sliding rod is wound and connected with the winding roller; a detection rod of a cylindrical structure is slidably provided in the circular through-slot of the third sliding rod, and a spring is sleeved on the outer side of the detection rod; a bottom plate of a rectangular plate structure is fixedly provided at the bottom of the first connecting plate of the bottom group, and a through-type rectangular through-slot structure is provided on one side of the bottom plate, a group of mounting rods are slidably provided in the rectangular through-slot of the bottom plate, and a through-type screw hole structure is provided on the top of the bottom group of mounting rods; a second screw is rotatably provided on one side of the bottom plate, and the second screw is connected to the bottom group of mounting rods by threaded cooperation; the first connecting plate, the first screw, the sliding plate, the second connecting plate, the third sliding rod and the detection rod together constitute a detection mechanism.

[0009] Furthermore, the mounting plate adopts a U-shaped plate structure, and a through circular groove structure is opened on the top of the mounting plate; a fourth slide bar with a cylindrical structure is slidably arranged in the circular groove on the top of the mounting plate, and a spring is sleeved on the outer side of the fourth slide bar; a roller with a cylindrical structure is rotatably arranged on the top of the fourth slide bar; a marker pen is fixedly arranged on one side of the bottom end of the fourth slide bar; and a cardboard with a rectangular plate structure is fixedly arranged on one side of the mounting plate. Beneficial Effects

[0010] In the present application, by bringing the detection rod into contact with the four sides of the transmission belt, cracks and other abnormalities in the transmission belt can be discovered promptly and effectively during the detection of the transmission belt, and after the cracks are detected, the pressure plate can be driven to close the control panel, thereby shutting down the device. At this time, the staff can promptly and accurately know how many turns the transmission belt can rotate before cracking, which is beneficial to improving the accuracy of the test data, facilitating the subsequent correction of product defects, and improving the accuracy of the device.

[0011] In addition, by increasing the weight of the extrusion block and pressing down the transmission belt between the two sets of wheels through the extrusion block, the maximum bearing pressure of the transmission belt is tested, and it is checked under what pressure conditions the transmission belt will break or crack, thereby effectively testing the strength of the transmission belt, thereby improving the test types of the device and improving the practicality and comprehensiveness of the device.

[0012] In addition, by keeping the roller in contact with the surface of the transmission belt, the fourth slide bar and the marker can be synchronously driven to move up and down, thereby leaving corresponding marks on the cardboard through the marker. After the test, the degree of change in the thickness of the transmission belt can be known by observing the marks on the cardboard, which further improves the comprehensiveness of the accessory test data and is more conducive to locating the strength of the accessory. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0014] In the attached picture: Figure 1 shows an overall front view schematic diagram of an embodiment according to the present invention; Figure 2 shows an overall top view schematic diagram of an embodiment according to the present invention; Figure 3 shows an overall axial schematic diagram of an embodiment according to the present invention; Figure 4 A schematic diagram showing the connection relationship between the fixing plate and the detection mechanism according to an embodiment of the present invention is shown; Figure 5A schematic diagram showing the splitting of the connection relationship between the pressing plate and the second sliding block according to an embodiment of the present invention is shown; Figure 6 A schematic diagram of disassembling a mounting plate according to an embodiment of the present invention is shown; Figure 7 A schematic diagram of disassembling a sliding frame and a test bench according to an embodiment of the present invention is shown.

[0015] Figure 8 The embodiment according to the present invention is shown Figure 4 A is a partial enlarged schematic diagram of the middle part.

[0016] Reference numerals list 1. Test bench; 101. Control panel; 102. Bidirectional lead screw; 103. First motor; 104. First slider; 105. Second motor; 106. Fixing plate; 107. Rotating wheel; 108. Mounting rod; 109. Sliding frame; 110. Counterweight; 111. Extrusion block; 112. First slide bar; 113. Press plate; 114. Slide rail; 115. Second slide bar; 116. Second slider; 11 7. Pin rod; 118. Winding roller; 119. Worm wheel; 120. Worm; 121. Bottom plate; 122. Second screw; 2. Detection mechanism; 201. First connecting plate; 202. First screw; 203. Sliding plate; 204. Second connecting plate; 205. Third sliding rod; 206. Detection rod; 3. Mounting plate; 301. Fourth sliding rod; 302. Roller; 303. Marker pen; 304. Cardboard. DETAILED DESCRIPTION

[0017] The embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings and embodiments of the present invention.

[0018] Example 1: Please refer to Figures 1 to 8 : The present invention proposes a testing device for the strength of agricultural machinery accessories, comprising: a test bench 1; the test bench 1 adopts a rectangular plate structure, and a group of slide groove structures are opened on both sides of the top of the test bench 1, a through-type rectangular through-groove structure is opened on the top of the test bench 1, and a group of through-type circular through-groove structures are opened on both sides of the top of the test bench 1; a mounting plate 3 is fixedly arranged on the top of the test bench 1; a group of first sliders 104 of U-shaped block structure are slidably arranged in the slide grooves on both sides of the top of the test bench 1, and a through-type screw hole structure is opened on one side of the bottom of the first slider 104; a fixing plate 106 of a circular plate structure is fixedly arranged on the front side of the first slider 104; three groups of mounting rods 108 of L-shaped rod structure are fixedly arranged on the outer side of the fixing plate 106 in a ring array; a first connecting plate 201 is fixedly arranged on one end of the mounting rod 108; a first screw rod 202 is rotatably arranged on one side of the first connecting plate 201; a sliding plate 203 is slidably arranged on the outer side of one end of the mounting rod 108, and the sliding plate 203 is connected to the first screw rod 202 by threaded matching.

[0019] Among them, a group of first sliding rods 112 of cylindrical structure are fixedly arranged on both sides of the top of the control panel 101, and the outer side of the first sliding rod 112 is sleeved with a spring structure; a pressure plate 113 of T-shaped plate structure is slidably arranged on the outer side of the two groups of first sliding rods 112, and a pin hole structure is opened on the top of the pressure plate 113; a slide rail 114 is fixedly arranged on the right side of the top of the test bench 1; a second sliding rod 115 of cylindrical structure is fixedly arranged on the inner side of the slide rail 114, and a spring is sleeved on the outer side of the second sliding rod 115; a second sliding block 116 of rectangular block structure is slidably arranged on the inner side of the slide rail 114; a pin rod 117 is fixedly connected to one side of the second sliding block 116; the top of the second sliding block 116 is equidistantly arranged Four groups of winding rollers 118 are rotatably arranged; a worm gear 119 is fixedly arranged on the outer side of the rotating shaft of the winding roller 118; a worm 120 is rotatably arranged on the top of the second slider 116, and the worm 120 is meshingly connected with the worm gear 119; a bottom plate 121 of a rectangular plate structure is fixedly arranged at the bottom of a group of first connecting plates 201 at the bottom, and a through rectangular through groove structure is opened on one side of the bottom plate 121, a group of mounting rods 108 are slidably arranged in the rectangular through groove of the bottom plate 121, and a through screw hole structure is opened on the top of the group of mounting rods 108 at the bottom; a second screw rod 122 is rotatably arranged on one side of the bottom plate 121, and the second screw rod 122 is connected to the group of mounting rods 108 at the bottom through threaded cooperation.

[0020] Among them, a second connecting plate 204 with a U-shaped plate structure is fixedly provided on one side of the sliding plate 203, and three groups of through-type circular through-groove structures are arranged on one side of the second connecting plate 204; three groups of third sliding rods 205 with cylindrical structures are slidably provided in the circular through-groove of the second connecting plate 204, and a through-type circular through-groove structure is provided at one end of the third sliding rod 205, and a pull rope is provided at the front end of the third sliding rod 205, and the pull rope at the front end of the third sliding rod 205 is wound and connected with the winding roller 118; a detection rod 206 with a cylindrical structure is slidably provided in the circular through-groove of the third sliding rod 205, and a spring is sleeved on the outer side of the detection rod 206; the first connecting plate 201, the first screw rod 202, the sliding plate 203, the second connecting plate 204, the third sliding rod 205 and the detection rod 206 together constitute the detection mechanism 2.

[0021] Specific usage and function of this embodiment: In the present invention, when performing detection, the transmission belt to be tested is firstly wound around the outside of the two groups of rotating wheels 107, and then the sliding plate 203 is driven to slide along the mounting rod 108 by rotating the first screw 202, thereby synchronously driving each group of detection rods 206 to slide, so that one end of each group of detection rods 206 contacts the surface of the transmission belt, and the diameter of the tip of the detection rod 206 can be selected and set according to the thickness of the crack of the transmission belt as needed, and the spring on the outside of the detection rod 206 is squeezed, and then the front group of mounting rods 108 is driven to slide back and forth along the bottom plate 121 by rotating the second screw 122, thereby synchronously adjusting the front The position of the detection mechanism 2 on the side mounting rod 108 is convenient for installing the transmission belt in place, and the position of the four detection mechanisms 2 is adjusted so that the detection rod 206 can contact the transmission belt, thereby facilitating the installation and disassembly of the transmission belt. After each group of detection mechanisms 2 is adjusted in place, the first motor 103 is started to drive the two groups of first sliders 104 to slide back and forth along the slide groove on the top of the test bench 1, so as to adjust the distance between the two groups of rotating wheels 107. On the one hand, it can meet the detection needs of transmission belts of different lengths, and on the other hand, the tightness of the transmission belt can be adjusted according to the detection needs. Then, the two groups of second motors 105 are started to synchronously drive the two groups of rotating wheels 107 to rotate, so that the transmission belt can be tested. The durability of the transmission belt is tested. During the test, each group of detection rods 206 keeps in contact with the surface of the transmission belt from all sides. If cracks appear on the surface of the transmission belt, the detection rod 206 can be inserted into the crack in time during the rotation of the transmission belt under the action of the spring on its outer side. After being inserted into the crack, while the transmission belt continues to rotate forward, the corresponding group of detection rods 206 and the third slide bar 205 are synchronously driven to slide forward along the circular through groove on the second connecting plate 204 for a distance. In this process, the second slider 116 can be pulled synchronously through the outer front end of each group of third slide bars 205 and the pull rope of the winding roller 118, and the second slider 116 moves along the slide rail 114 to The two first slide bars 112 are engaged, and the two second motors 105 are stopped, and the two rotating wheels 107 are stopped. At this time, the staff can know the durability of the transmission belt in time, and know more accurately how many times the transmission belt can rotate before cracking, which is conducive to improving the accuracy of the test data and the accuracy of the device.

[0022] Example 2: Based on Example 1, please refer to Figures 1 to 8 : Among them, a control panel 101 is fixedly provided at one end of the front side of the test bench 1, and an emergency stop switch is provided on the top of the control panel 101; a bidirectional lead screw 102 is rotatably provided in the slide groove on the top of the test bench 1, and the bidirectional lead screw 102 is respectively connected with two groups of first sliders 104 by threaded cooperation; a first motor 103 is fixedly provided on one side of the test bench 1, and the first motor 103 is transmission-connected with the bidirectional lead screw 102; a second motor 105 is fixedly provided on the rear side of the top end of the first slider 104; a rotating wheel 107 is rotatably provided on the front side of the first slider 104, and the rotating wheel 107 is transmission-connected with the second motor 105; a sliding frame 109 of an I-shaped structure is slidably provided in the circular through grooves on both sides of the top of the test bench 1, and a spring is sleeved on the outer side of the sliding frame 109; a counterweight block 110 is sleeved on the outer side of the top of the sliding frame 109; an extrusion block 111 of a rectangular block structure is fixedly provided in the middle of the sliding frame 109.

[0023] Specific usage and function of this embodiment: When it is necessary to measure the strength of the transmission belt, a corresponding number of counterweight blocks 110 can be set on the outer side of the top of the sliding frame 109 to increase the weight of the sliding frame 109, thereby increasing the weight of the extrusion block 111, and the extrusion block 111 is used to press down the transmission belt between the two sets of wheels 107 to test the maximum bearing pressure of the transmission belt and check under what pressure conditions the transmission belt will break or crack, thereby effectively testing the strength of the transmission belt, improving the test types of the device, and improving the practicality and comprehensiveness of the device.

[0024] Example 3: Based on Example 2, please refer to Figures 1 to 8 : Among them, the mounting plate 3 adopts a U-shaped plate structure, and a through circular groove structure is opened on the top of the mounting plate 3; a fourth slide bar 301 with a cylindrical structure is slidably arranged in the circular groove on the top of the mounting plate 3, and a spring is sleeved on the outer side of the fourth slide bar 301; a roller 302 with a cylindrical structure is rotatably arranged on the top of the fourth slide bar 301; a marker pen 303 is fixedly arranged on one side of the bottom end of the fourth slide bar 301; and a cardboard 304 with a rectangular plate structure is fixedly arranged on one side of the mounting plate 3.

[0025] Specific usage and function of this embodiment: when the transmission belt is sleeved on the outside of the rotating wheel 107, the roller 302 contacts the surface of the transmission belt under the action of the spring on the outside of the fourth slide bar 301, and then one end of the marker 303 contacts the surface of the cardboard 304. If the thickness of the transmission belt changes, the roller 302 can synchronously drive the fourth slide bar 301 and the marker 303 to move up and down while maintaining contact with the surface of the transmission belt, so that the marker 303 leaves a corresponding mark on the cardboard 304. After the test, the degree of change in the thickness of the transmission belt can be known by observing the mark on the cardboard 304. At the beginning, the thickness of each part of the belt is consistent. As the detection process progresses, the thickness of each part of the belt will change. This device can intuitively detect the change difference of the belt thickness change, that is, detect the thinning degree of the thinned area, further improve the comprehensiveness of the accessory test data, and is more conducive to locating the strength of the accessory, solving the need for detecting the thickness change of the transmission belt and increasing the functionality of this device.

[0026] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A testing device for the strength of agricultural machinery accessories, characterized in that: include: A test bench (1); the test bench (1) adopts a rectangular plate structure, and a group of slide groove structures are opened on both sides of the top of the test bench (1), a through-type rectangular through-groove structure is opened on the top of the test bench (1), and a group of through-type circular through-groove structures are opened on both sides of the top of the test bench (1); a mounting plate (3) is fixedly arranged on the top of the test bench (1); a group of first sliding blocks (104) of U-shaped block structure are slidably arranged in the slide grooves on both sides of the top of the test bench (1), and a through-type screw hole structure is opened on one side of the bottom of the first sliding block (104). A fixing plate (106) of a circular plate structure is fixedly provided on the front side of the first sliding block (104); three groups of mounting rods (108) of an L-shaped rod structure are fixedly provided in a circular array on the outer side of the fixing plate (106); a first connecting plate (201) is fixedly provided on one end of the mounting rod (108); a first screw rod (202) is rotatably provided on one side of the first connecting plate (201); a sliding plate (203) is slidably provided on the outer side of one end of the mounting rod (108), and the sliding plate (203) is connected to the first screw rod (202) by threaded matching.

2. A testing device for the strength of agricultural machinery accessories as claimed in claim 1, characterized in that: A control panel (101) is fixedly arranged at one end of the front side of the test bench (1), and an emergency stop switch is arranged at the top of the control panel (101); a bidirectional lead screw (102) is rotatably arranged in a slide groove at the top of the test bench (1), and the bidirectional lead screw (102) is respectively connected to two groups of first sliding blocks (104) through threaded engagement; a first motor (103) is fixedly arranged at one side of the test bench (1), and the first motor (103) is transmission-connected to the bidirectional lead screw (102).

3. A testing device for the strength of agricultural machinery accessories as claimed in claim 1, characterized in that: A second motor (105) is fixedly arranged at the rear side of the top end of the first slider (104); a rotating wheel (107) is rotatably arranged at the front side of the first slider (104), and the rotating wheel (107) is transmission-connected to the second motor (105); a sliding frame (109) with an I-shaped structure is slidably arranged in the circular through grooves on both sides of the top of the test bench (1), and a spring is sleeved on the outer side of the sliding frame (109); a counterweight block (110) is sleeved on the outer side of the top end of the sliding frame (109); and an extrusion block (111) with a rectangular block structure is fixedly arranged in the middle of the sliding frame (109).

4. A testing device for the strength of agricultural machinery accessories as claimed in claim 2, characterized in that: A group of cylindrical first slide bars (112) are fixedly arranged on both sides of the top of the control panel (101), and a spring structure is sleeved on the outer side of the first slide bars (112); a pressing plate (113) with a T-shaped plate structure is slidably arranged on the outer side of the two groups of first slide bars (112), and a pin hole structure is opened on the top of the pressing plate (113); a slide rail (114) is fixedly arranged on the right side of the top of the test bench (1); a cylindrical second slide bar (115) is fixedly arranged on the inner side of the slide rail (114), and a spring is sleeved on the outer side of the second slide bar (115).

5. A testing device for the strength of agricultural machinery accessories as claimed in claim 4, characterized in that: A second sliding block (116) of a rectangular block structure is slidably disposed on the inner side of the slide rail (114); a pin rod (117) is fixedly connected to one side of the second sliding block (116); four groups of winding rollers (118) are rotatably disposed at the top of the second sliding block (116); a worm gear (119) is fixedly disposed on the outer side of the rotating shaft of the winding roller (118); a worm (120) is rotatably disposed on the top of the second sliding block (116), and the worm gear (120) is meshingly connected to the worm gear (119).

6. A testing device for the strength of agricultural machinery accessories as claimed in claim 1, characterized in that: A bottom plate (121) of a rectangular plate structure is fixedly arranged at the bottom of the first bottom connecting plate (201), and a through-type rectangular through-slot structure is provided on one side of the bottom plate (121), a group of mounting rods (108) are slidably arranged in the rectangular through-slot of the bottom plate (121), and a through-type screw hole structure is provided on the top of the bottom group of mounting rods (108); a second screw rod (122) is rotatably arranged on one side of the bottom plate (121), and the second screw rod (122) is connected to the bottom group of mounting rods (108) by threaded engagement.

7. A testing device for the strength of agricultural machinery accessories as claimed in claim 1, characterized in that: A second connecting plate (204) with a U-shaped plate structure is fixedly arranged on one side of the sliding plate (203), and three groups of penetrating circular through-groove structures are arranged in an arranged manner on one side of the second connecting plate (204); a third sliding rod (205) with a cylindrical structure is slidably arranged in the circular through-groove of the second connecting plate (204), and a penetrating circular through-groove structure is opened at one end of the third sliding rod (205), a pull rope is arranged at the front end of the third sliding rod (205), and the pull rope at the front end of the third sliding rod (205) is wound and connected with the winding roller (118); a detection rod (206) with a cylindrical structure is slidably arranged in the circular through-groove of the third sliding rod (205), and a spring is sleeved on the outer side of the detection rod (206).

8. A testing device for the strength of agricultural machinery accessories as claimed in claim 7, characterized in that: The first connecting plate (201), the first screw rod (202), the sliding plate (203), the second connecting plate (204), the third sliding rod (205) and the detection rod (206) together form a detection mechanism (2).

9. A testing device for the strength of agricultural machinery accessories as claimed in claim 1, characterized in that: The mounting plate (3) adopts a U-shaped plate structure, and a through circular through groove structure is provided on the top of the mounting plate (3); a fourth sliding rod (301) of a cylindrical structure is slidably arranged in the circular through groove on the top of the mounting plate (3), and a spring is sleeved on the outer side of the fourth sliding rod (301).

10. A testing device for the strength of agricultural machinery accessories as claimed in claim 9, characterized in that: A roller (302) with a cylindrical structure is rotatably arranged on the top of the fourth sliding rod (301); a marking pen (303) is fixedly arranged on one side of the bottom end of the fourth sliding rod (301); and a cardboard (304) with a rectangular plate structure is fixedly arranged on one side of the mounting plate (3).

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