A device for testing the strength of a hose of a farm reel-type sprinkler

Abstract

The present invention relates to the field of sprinkler hose detection, and specifically to a farmland reel-type sprinkler hose strength detection device, including a detection platform, wherein a winding unit for winding the hose and a stretching unit for stretching the hose are sequentially arranged from left to right at the upper end of the detection platform. In the present invention, through the cooperation between the winding unit and the stretching unit, the hose can be tested for its stretching performance while being tested for its bending performance, so as to simulate the situation that the hose is subjected to the composite stress of bending and stretching in actual use, thereby increasing the richness of the detection and improving the accuracy of the detection results. Through comprehensive detection, the strength performance of the hose can be more accurately evaluated. The stretching unit used in the invention can adjust the hose to different tilt states, and perform bending and stretching performance tests on the hose in the tilt state.

Description

Technical Field

[0001] The invention relates to the field of sprinkler hose detection, in particular to a farmland reel-type sprinkler hose strength detection device. Background Art

[0002] The hose of the farm reel sprinkler is an important part of the reel sprinkler, which is mainly used to transport water to the farmland for irrigation. The strength test of the sprinkler hose is very important because it is directly related to the safety and reliability of the irrigation system. Common strength test methods include tensile test, bending test and flattening test, among which the tensile test can test the tensile strength and elongation of the hose, and the bending test can test the bending strength of the hose.

[0003] However, there are currently the following problems in the strength testing of the hose of a reel-type sprinkler: (1) The common bending test is to bend the hose to a certain angle and then loosen it, and then observe whether there are cracks, breaks or other signs of damage on its surface. However, the hose is in a multi-turn state in actual work, and the degree of bending of the hose in different usage scenarios is different. Therefore, the test results obtained from a single bending test are not comprehensive and true, and it is difficult to accurately evaluate the bending strength of the hose.

[0004] (2) Common tensile tests are mostly performed by stretching the hose in a single horizontal direction. However, since the hose in actual use may be stretched and moved in different tilted states to meet the needs of sprinkler irrigation operations, the test results obtained by stretching in a single direction are relatively one-sided, and the accuracy and reliability of the test results need to be improved.

[0005] Therefore, in order to solve the problems existing in the strength detection process of the hose of a farmland reel-type sprinkler irrigation machine, the present invention provides a strength detection device for the hose of a farmland reel-type sprinkler irrigation machine. Summary of the invention

[0006] The present invention provides a hose strength testing device for a farmland reel-type sprinkler irrigation machine, comprising a testing platform, wherein a winding unit for winding the hose and a stretching unit for stretching the hose are sequentially arranged from left to right on the upper end of the testing platform; the winding unit comprises a rotating cylinder arranged above the testing platform, circular baffles are installed at both the front and rear ends of the rotating cylinder, arc plates evenly arranged in the circumferential direction are arranged on the outer side of the rotating cylinder, an adjusting component for driving the arc plates arranged in the circumferential direction to synchronously move along the radial direction of the rotating cylinder is arranged inside the rotating cylinder, and a driving component for driving the winding unit to rotate circumferentially and move forward and backward at the same time is arranged at the rear end of the circular baffle located at the rear side; the stretching unit comprises a rectangular plate arranged above the testing platform, and the testing unit is provided with a plurality of cylindrical plates arranged at the upper end of the testing platform, wherein the cylindrical plates are provided with cylindrical plates, and ... A rectangular groove for avoiding the rectangular plate from moving up and down is provided at the upper end of the measuring platform, guide posts slidably connected to the rectangular plate are installed at the four corners of the bottom wall of the rectangular groove, a top plate is installed between the upper ends of the guide posts, a threaded telescopic rod symmetrically installed front and back and rotatably connected to the upper end surface of the rectangular plate at the telescopic end is installed in the middle of the top plate, a transverse guide rail is installed in the middle of the upper end of the rectangular plate, an electric skateboard is slidably installed on the transverse guide rail, a fixed block is installed on the upper end of the electric skateboard, a clamping assembly for clamping the end of the hose is provided on the circular baffle plate located on the front side and on the left end of the fixed block; a mounting ring is provided above the rectangular plate, and a moving assembly for driving the mounting ring to rotate circumferentially along the hose and move axially at the same time is provided on the upper end of the rectangular plate.

[0007] In one possible implementation, the adjustment assembly includes a movable plate installed on the inner side of the arc plate and radially slidably connected to the rotating cylinder, a rotating plate is rotatably installed inside the rotating cylinder, an open through groove for avoiding the rotating plate is opened on the movable plate, arc through grooves evenly arranged in the circumferential direction are opened on the rotating plate, a connecting column sliding through the arc through groove is rotatably installed on one end of the movable plate away from the inner wall of the rotating cylinder, a rotating shaft rotatably passing through the front circular baffle is installed at the front end of the rotating plate, a turntable is installed at the front end of the rotating shaft, and sockets evenly arranged around the rotating shaft are opened at the front end of the circular baffle on the front side, and the turntable is plugged into and matched with the corresponding sockets through an insertion rod.

[0008] In one possible implementation, the circular baffles on the front and rear sides are rotatably mounted on a support plate that is slidably connected to the detection platform front and back, a control board is installed at the left end of the support plate, and a driving assembly includes a motor 1 whose output shaft is connected to the rear end center of the rear circular baffle, and the motor 1 is installed at the rear end of the rear support plate through a support, and a circular support plate located on the front side of the turntable is installed at the front end of the front circular baffle, and a rotating column concentric with the circular baffle is installed at the front end of the circular support plate, and the rotating column is rotatably connected to the vertical section of the L-shaped plate installed at the front end of the front support plate.

[0009] In one possible implementation, the drive assembly also includes a threaded rod, and two vertical plates distributed front and back are installed on the upper left end of the detection table. The front end of the vertical plate located on the rear side is rotatably installed with a threaded rod threadedly connected to the control plate, and the rear end of the vertical plate located on the front side is rotatably installed with a rotating rod fixedly connected to the front end of the threaded rod. The rotating column and the outside of the rotating rod are both provided with connecting pulleys, and the rotating column is fixedly connected to the corresponding connecting pulleys, the rotating rod is slidably matched with the corresponding connecting pulleys through splines, and the left and right connecting pulleys are connected by belt drive, and the left and right connecting pulleys are rotatably installed on the rear end of the same connecting plate that is sleeved between the rotating column and the outside of the rotating rod.

[0010] In one possible implementation, a bracket is installed on the outer side of the circular baffle located on the front side, a spring telescopic column is installed on the rear end of the bracket, a connecting plate is installed on the lower end of the telescopic end of the spring telescopic column, the clamping assembly includes a mounting plate, the mounting plate in the left clamping assembly is fixedly connected to the connecting plate, the mounting plate in the right clamping assembly is installed on the left end of the fixed block, circular supports are installed on the end of the left mounting plate away from the spring telescopic column and the left end of the right mounting plate, a fixed cylinder is installed on the end of the left circular support away from the corresponding mounting plate and the left end of the right circular support, a front-to-back symmetrical arc-shaped support plate is arranged on the outside of the fixed cylinder, a mounting through groove corresponding to the arc-shaped support plate is opened on the fixed cylinder, and a folding rod hinged to the inner side of the arc-shaped support plate is installed in the mounting through groove through the rotation of the torsion spring shaft.

[0011] In one possible implementation, a two-way electric push rod is installed on one end of the mounting plate on the left side away from the spring telescopic column and the left end of the right mounting plate, and a push plate is installed on the front and rear telescopic ends of the two-way electric push rod. A semicircular pressure plate is installed on the side close to the front and rear push plates on the left side, which is slidably connected to the end of the left mounting plate away from the spring telescopic column. A semicircular pressure plate is installed on the side close to the front and rear push plates on the right side, which is slidably connected to the left end face of the right mounting plate. The semicircular pressure plate is located on the outer side of the corresponding arc-shaped abutment plate, and a circular groove matching the circular support is opened on the end of the semicircular pressure plate close to the circular support, and an abutment column is installed on the inner wall of the circular groove, which is symmetrical front and back and slides through the circular support and the fixed cylinder.

[0012] In one possible implementation, the moving component includes an outer gear ring fixedly mounted on the outside of the right end of the mounting ring, a rotating gear is meshed on the upper side of the outer gear ring, two mounting frames distributed on the left and right are installed on the upper end of the rectangular plate, a threaded column threadedly connected to the rotating gear is rotatably installed between the middle parts of the left and right mounting frames, the right end of the threaded column rotates through the mounting frame on the right and is connected to the output shaft of motor 2, motor 2 is installed on the right end of the right mounting frame, support rods rotatably installed between the left and right mounting frames are symmetrically arranged on the front and rear sides of the threaded column, the rotating gear and the outer gear ring are rotatably installed on the left end of the same connecting ring plate, the connecting ring plate is threadedly connected to the threaded column and is slidably connected to the support rod left and right.

[0013] In one possible implementation, a semi-annular plate that is symmetrical front and back is provided at the upper left end of the rectangular plate, an inner ring plate is detachably installed on the inner side of the semi-annular plate, evenly arranged bosses are installed on the inner ring surface of the inner ring plate, and the left end of the semi-annular plate is an inclined structure that is inclined outward.

[0014] In a possible implementation, the sides of the semi-circular plates described in the front and rear that are separated from each other are fixedly connected to the vertical section of the L-shaped frame, and two square holes distributed front and back are opened at the positions corresponding to the horizontal sections of the L-shaped frame on the rectangular plate, and the horizontal sections of the L-shaped frame are plugged into the corresponding square holes through square rods.

[0015] In a possible implementation, a friction plate is detachably mounted on the outer side of the arc-shaped plate, and evenly arranged protrusions are provided on the outer side of the friction plate.

[0016] Beneficial effects of the present invention: 1. In the present invention, through the cooperation between the winding unit and the stretching unit, the bending performance of the hose can be tested at the same time as the stretching performance, so as to simulate the situation that the hose will be subjected to the combined stress of bending and stretching in actual use, thereby increasing the richness of the test and improving the accuracy of the test results. Through comprehensive testing, the strength performance of the hose can be more accurately evaluated.

[0017] 2. The stretching unit used in the present invention can adjust the hose to different tilt states, and perform bending and stretching performance tests on the hose in the tilt state to simulate the different degrees of tilt and bending that the hose may be subjected to during use, thereby further improving the accuracy and reliability of the test results.

[0018] 3. The winding unit used in the present invention can not only wind the hose and simulate the winding state of the hose in actual use, but also flexibly change the winding radius of the hose, so as to achieve a comprehensive evaluation of the bending resistance and durability of the hose, and further improve the accuracy and reliability of the test results.

[0019] In addition to the technical problems solved by the embodiments of the present invention described above, the technical features that constitute the technical scheme, and the beneficial effects brought about by the technical features of the technical scheme, other technical problems that can be solved by a hose strength detection device for a farmland reel-type sprinkler provided by the embodiments of the present application, other technical features included in the technical scheme, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the main stereoscopic structure of the present invention.

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of the driving assembly of the present invention.

[0023] Figure 3 It is a three-dimensional structural schematic diagram of the circular baffle, friction plate, rotating disk and clamping assembly of the present invention.

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the clamping assembly of the present invention.

[0025] Figure 5 It is a three-dimensional structural schematic diagram of the semicircular pressing plate and the abutment column of the present invention.

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of the adjustment component of the present invention.

[0027] Figure 7 It is a schematic diagram of the main plane structure of the adjustment component of the present invention.

[0028] Figure 8 It is a schematic diagram of the three-dimensional structure of the stretching unit of the present invention.

[0029] Fig. 9 It is a schematic diagram of the three-dimensional structure of the mounting ring and the moving assembly of the present invention.

[0030] Fig.10 It is a schematic diagram of the three-dimensional structure of the semi-annular plate and the inner ring plate of the present invention.

[0031] In the figure: 1, test table; 2, winding unit; 21, rotating cylinder; 22, circular baffle; 221, spring telescopic column; 222, connecting plate; 223, mounting plate; 224, circular support; 225, fixed cylinder; 226, arc-shaped plate; 227, folding rod; 228, two-way electric push rod; 229, semicircular pressure plate; 230, column; 231, support plate; 232, control plate; 233, arc plate; 234, friction plate; 235, moving plate; 236, rotating plate; 237, arc-shaped slot; 238, rotating shaft; 239, turntable; 24 1. Socket; 242. Plug rod; 243. Motor 1; 244. Rotating column; 245. Threaded rod; 246. Rotating rod; 247. Connecting pulley; 3. Stretching unit; 31. Rectangular plate; 311. Mounting ring; 312. Outer gear ring; 313. Rotating gear; 314. Mounting frame; 315. Threaded column; 316. Motor 2; 317. Support rod; 318. Connecting ring plate; 32. Guide column; 321. Semi-circular plate; 322. Square hole; 323. Square rod; 324. Inner ring plate; 33. Threaded telescopic rod; 34. Electric skateboard; 35. Fixed block. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described below, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0033] See also Figure 1 A device for testing the strength of a hose of a farm reel-type sprinkler comprises a testing platform 1, wherein a winding unit 2 for winding the hose and a stretching unit 3 for stretching the hose are sequentially arranged from left to right on the upper end of the testing platform 1.

[0034] See also Figure 1 , Figure 2 and Figure 8The winding unit 2 includes a rotating cylinder 21 arranged above the detection platform 1, and circular baffles 22 are installed at the front and rear ends of the rotating cylinder 21. The stretching unit 3 includes a rectangular plate 31 arranged above the detection platform 1. A rectangular groove for avoiding the up and down movement of the rectangular plate 31 is opened at the upper end of the detection platform 1. Guide columns 32 connected to the rectangular plate 31 for sliding up and down are installed at the four corners of the bottom wall of the rectangular groove. A top plate is installed between the upper ends of the guide columns 32. A threaded telescopic rod 33 that is symmetrical front and back and whose telescopic end is rotatably connected to the upper end surface of the rectangular plate 31 is installed in the middle of the top plate. A transverse guide rail is installed in the middle of the upper end of the rectangular plate 31, and an electric slide 34 is slidably installed on the transverse guide rail. A fixed block 35 is installed on the upper end of the electric slide 34. A clamping assembly for clamping the end of the hose is provided on the circular baffle 22 located on the front side and the left end of the fixed block 35.

[0035] See also Figure 2 , Figure 3 , Figure 4 and Figure 5 , a bracket is installed on the outer side of the circular baffle 22 located on the front side, and a spring telescopic column 221 is installed on the rear end of the bracket. A connecting plate 222 is installed at the lower end of the telescopic end of the spring telescopic column 221. The clamping assembly includes a mounting plate 223. The mounting plate 223 in the left clamping assembly is fixedly connected to the connecting plate 222, and the mounting plate 223 in the right clamping assembly is installed at the left end of the fixed block 35. The end of the left mounting plate 223 away from the spring telescopic column 221 and the left end of the right mounting plate 223 are both installed with a circular support 224, and the end of the left circular support 224 away from the corresponding mounting plate 223 and the left end of the right circular support 224 are both installed with a fixed cylinder 225. The outside of the fixed cylinder 225 is provided with a front-to-back symmetrical arc-shaped abutment plate 226, and the fixed cylinder 225 is provided with a mounting groove corresponding to the arc-shaped abutment plate 226. A folding rod 2 hinged to the inner side of the arc-shaped abutment plate 226 is installed in the mounting groove through the rotation of the torsion spring shaft. 27. A two-way electric push rod 228 is installed on one end of the left mounting plate 223 away from the spring telescopic column 221 and the left end of the right mounting plate 223. Push plates are installed on the front and rear telescopic ends of the two-way electric push rod 228. A semicircular pressure plate 229 slidably connected to the end of the left mounting plate 223 away from the spring telescopic column 221 is installed on the side close to the front and rear push plates on the left side. A semicircular pressure plate 229 slidably connected to the left end face of the right mounting plate 223 is also installed on the side close to the front and rear push plates on the right side. The semicircular pressure plate 229 is located on the outer side of the corresponding arc-shaped abutment plate 226, and a rubber pad is installed on the side close to the front and rear semicircular pressure plates 229. A circular groove matching the circular support 224 is opened on the end of the semicircular pressure plate 229 close to the circular support 224, and an abutment column 230 that is symmetrical front and back and slides through the circular support 224 and the fixed cylinder 225 is installed on the inner wall of the circular groove.

[0036] See also Figure 1 , Figure 8 and Fig. 9 A mounting ring 311 for connecting the concave-convex detection head and the ultrasonic probe is arranged above the rectangular plate 31. The concave-convex detection head and the ultrasonic probe are symmetrical front and back and can be detachably mounted on the mounting ring 311. The concave-convex detection head and the ultrasonic probe are respectively connected to the existing concave-convex detector and the ultrasonic detector through connecting wires (the connecting wires, the concave-convex detector and the ultrasonic detector are not shown in the figure); a moving component for driving the mounting ring 311 to rotate along the circumference of the hose and move axially at the same time is arranged at the upper end of the rectangular plate 31. The moving component includes an outer tooth ring 312 fixedly mounted on the outside of the right end of the mounting ring 311, and a rotating gear 313 is meshed on the upper side of the outer tooth ring 312. The rectangular plate Two mounting brackets 314 distributed on the left and right are installed on the upper end of 31, and a threaded column 315 threadedly connected to the rotating gear 313 is rotatably installed between the middle parts of the left and right mounting brackets 314. The right end of the threaded column 315 rotates through the mounting bracket 314 on the right and is connected to the output shaft of the second motor 316. The second motor 316 is installed on the right end of the right mounting bracket 314. Support rods 317 rotatably installed between the left and right mounting brackets 314 are symmetrically arranged on the front and rear sides of the threaded column 315. The rotating gear 313 and the outer gear ring 312 are rotatably installed on the left end of the same connecting ring plate 318. The connecting ring plate 318 is threadedly connected to the threaded column 315 and is slidably connected to the support rod 317 left and right.

[0037] During operation: Before testing the strength of the hose, it is necessary to cut a hose of the required length from the longer hose produced as a test sample. In the initial state, the clamping assemblies on the left and right sides are on the same horizontal line and opposite to each other. At the same time, the electric slide 34 drives the fixing block 35 and the clamping assembly on the right to be located at the rightmost end of the transverse guide rail. First, the left end of the hose to be tested can be clamped by the clamping assembly on the left and fixed on the circular baffle 22 on the front side.

[0038] Specifically, first, the left end of the hose needs to be pressed against the circular support 224 in the left clamping assembly, and the fixed cylinder 225, the arc-shaped support plate 226 and the folding rod 227 are inserted into the interior of the hose. Then, the bidirectional electric push rod 228 can drive the semicircular pressure plates 229 on the front and rear sides to move synchronously toward each other through the push plate until they are pressed against each other. At the same time, the front and rear semicircular pressure plates 229 simultaneously clamp the outside of the hose through the rubber pads on their inner sides. The rubber pads help to increase the friction between the hose and the semicircular pressure plates 229, thereby improving the firmness of the clamping. At the same time, the support columns 230 on the front and rear sides are pressed against each other. The corresponding semicircular pressure plate 229 synchronously moves along the circular support 224 and the fixed cylinder 225 toward each other to press the folding rod 227. The folding rod 227 rotates around the torsion spring axis due to the pressing force, and drives the arc-shaped abutment plate 226 to move outward along the installation groove until it presses against the inner wall of the hose. The arc-shaped abutment plates 226 on the front and rear sides can be used to stably clamp the inner wall of the hose. The cooperation between the semicircular pressure plate 229 and the arc-shaped abutment plate 226 can synchronously clamp the hose inside and outside, thereby ensuring the stability of the hose during subsequent testing and preventing the hose from deviating and affecting the smooth progress of the testing operation.

[0039] Subsequently, the other end of the hose can be passed through the mounting ring 311 and the connecting ring plate 318, and the right end of the hose can be clamped stably and forcefully using the clamping assembly on the right side in the same manner as described above, so as to fix the right end of the hose to the left end of the fixing block 35. At this time, the hose is in a naturally horizontally straightened state. To ensure accurate comparative analysis of the subsequent test results, an initial test can be performed on the hose at this time to obtain a reference initial test result.

[0040] Specifically, the threaded column 315 is driven to rotate by the second motor 316, and the rotating gear 313 rotates synchronously with the rotation of the threaded column 315 and moves from left to right along the threaded column 315, and the rotating gear 313, the connecting ring plate 318, the outer gear ring 312 and the mounting ring 311 move synchronously from left to right. At the same time, due to the meshing of the rotating gear 313 and the outer gear ring 312, the outer gear ring 312 drives the mounting ring 311, the concave-convex detection head and the ultrasonic probe to rotate circumferentially. The concave-convex detection head and the ultrasonic probe rotate around the circumference of the hose and move from left to right along the axial direction of the hose. In this process, the concave-convex detection instrument and the ultrasonic detector are respectively moved by the concave-convex detection head and the ultrasonic probe. The probe performs a comprehensive and uniform inspection on the hose. The concave-convex detector can detect whether there are defects such as depressions and convexities on the surface of the hose through the concave-convex detection head. The ultrasonic detector can transmit and receive ultrasonic signals through the ultrasonic probe and analyze the reflected signals to detect whether there are defects such as cracks and stratification on the inner surface of the hose. At the same time, the concave-convex detector and the ultrasonic detector can display, record and analyze the test results. After completing the initial inspection of the hose, the concave-convex detection head and the ultrasonic probe can be temporarily removed from the mounting ring 311 to prevent the moving hose from colliding with the concave-convex detection head or the ultrasonic probe during subsequent inspections and causing damage to them.

[0041] In addition, before testing, the electric skateboard 34 can be used to drive the fixed block 35 and the clamping assembly on the right to move to the right along the transverse guide rail to a certain distance and maintain it for a certain time, and the moving distance and stretching time are recorded. At the same time, the stretched hose can be tested in the same way as above.

[0042] See also Figure 1 , Figure 2 , Figure 3 , Figure 6 and Figure 7The circular baffles 22 are all rotatably mounted on a support plate 231 that is slidably connected to the detection platform 1 in the front and rear directions. A control plate 232 is mounted on the left end of the support plate 231. An arc plate 233 that is evenly arranged in the circumferential direction is arranged on the outside of the rotating cylinder 21. A friction plate 234 is detachably mounted on the outside of the arc plate 233. Evenly arranged protrusions are arranged on the outside of the friction plate 234. An adjusting component for driving the circumferentially arranged arc plates 233 to synchronously move along the radial direction of the rotating cylinder 21 is arranged inside the rotating cylinder 21. The adjusting component includes a moving plate 235 that is mounted on the inner side of the arc plate 233 and is slidably connected to the rotating cylinder 21 in the radial direction. A rotating plate 236 is rotatably installed on the part, an open through groove for avoiding the rotating plate 236 is opened on the moving plate 235, and an arc through groove 237 evenly arranged in the circumference is opened on the rotating plate 236. A connecting column that slides through the arc through groove 237 is rotatably installed on the end of the moving plate 235 away from the inner wall of the rotating cylinder 21, and a rotating shaft 238 that rotates and passes through the front circular baffle 22 is installed at the front end of the rotating plate 236. A turntable 239 is installed at the front end of the rotating shaft 238. The front end of the circular baffle 22 located on the front side is provided with sockets 241 evenly arranged in the circumference around the rotating shaft 238, and the turntable 239 is plugged into and matched with the corresponding socket 241 through an insertion rod 242.

[0043] See also Figure 1 and Figure 2 The rear end of the circular baffle 22 located at the rear side is provided with a driving assembly for driving the winding unit 2 to rotate circumferentially and move forward and backward at the same time. The driving assembly includes a motor 243 whose output shaft is connected to the center of the rear end of the circular baffle 22 on the rear side. The motor 243 is installed at the rear end of the rear support plate 231 through a support. The front end of the front circular baffle 22 is provided with a circular support plate located in front of the turntable 239. The front end of the circular support plate is provided with a rotating column 244 concentric with the circular baffle 22. The rotating column 244 is rotatably connected to the vertical section of the L-shaped plate installed at the front end of the front support plate 231. The upper left end of the detection table 1 is provided with a front and rear distributed There are two vertical plates, and the front end of the vertical plate located on the rear side is rotatably installed with a threaded rod 245 threadedly connected to the control plate 232, and the rear end of the vertical plate located on the front side is rotatably installed with a rotating rod 246 fixedly connected to the front end of the threaded rod 245. The outside of the rotating column 244 and the rotating rod 246 are both provided with connecting pulleys 247, and the rotating column 244 is fixedly connected to the corresponding connecting pulley 247, and the rotating rod 246 is slidingly matched with the corresponding connecting pulley 247 through a spline, and the left and right connecting pulleys 247 are connected through belt drive, and the left and right connecting pulleys 247 are rotatably installed on the rear end of the same connecting plate that is sleeved between the rotating column 244 and the outside of the rotating rod 246.

[0044] See also Figure 1-Figure 8During operation: after obtaining the initial detection result of the hose, the driving assembly can be used to drive the winding unit 2 to perform winding detection on the hose. During this process, the circular baffle 22 located on the rear side can be driven by the motor 243 to rotate clockwise, and the rotating cylinder 21, the arc plate 233, the adjusting assembly and the circular baffle 22 located on the front side can rotate clockwise synchronously. The circular baffle 22 located on the front side drives the circular support plate and the rotating column 244 to rotate synchronously, and the connecting pulley 247 on the right side rotates synchronously. Under the action of the belt, the connecting pulley 247 on the left side drives the rotating rod 246 and the threaded rod 245 to rotate synchronously through the spline. As the threaded rod 245 rotates, the control plates 232 on the front and rear sides can simultaneously move along the threaded rod 245 in the front and rear directions, and the support plates 231 on the front and rear sides move forward and backward along the detection platform 1 synchronously with the corresponding control plates 232 The circular baffle 22, rotating cylinder 21, arc plate 233 and adjusting assembly on the front and rear sides move synchronously therewith, and the circular support plate drives the rotating column 244 and the connecting pulley 247 on the right to move synchronously. Under the action of the connecting plate, the connecting pulley 247 on the left can move synchronously along the rotating rod 246 through the spline. In addition, the clamping assembly on the left can rotate and move forward and backward synchronously with the circular baffle 22 on the front side through the cooperation between the bracket, the spring telescopic column 221 and the connecting plate 222. At this time, the hose is gradually and evenly wound around the outside of the circumferentially arranged arc plate 233. At the same time, the electric slide 34 can drive the fixed block 35 and the clamping assembly on the right to move to the right accordingly along the transverse guide rail to ensure that the hose is smoothly wound. Winding the hose can simulate the state of the hose in actual use to improve the authenticity of subsequent test results.

[0045] After a certain length of the hose is wound around the outer side of the circumferentially arranged arc plate 233, the winding state can be maintained for a period of time, and the radius of the arc plate 233 when the hose is wound can be recorded. Then, the winding unit 2 can be used to release the winding of the hose in the opposite manner as described above. At the same time, the clamping assembly on the right side can drive the right end of the hose to move right again, and put the hose in a naturally stretched state again. Then, the performance of the hose that has returned to a horizontal state after winding can be tested again in the same manner as described above. In addition, a certain stretching force can be applied to the hose that is in a naturally stretched state after winding, and the performance of the hose that has been stretched after winding can be tested.

[0046] In addition, the turntable 239 located on the front side of the circular baffle 22 on the front side can also be rotated, and the turntable 239 drives the rotating plate 236 to rotate synchronously through the rotating shaft 238. Under the action of the arc-shaped through groove 237 and the connecting column, the movable plate 235 can move synchronously outward along the radial direction of the rotating cylinder 21 with the rotation of the rotating plate 236, and the circumferentially arranged arc plates 233 move synchronously outward with the corresponding movable plates 235. At this time, the winding radius of the winding unit 2 changes synchronously. After adjusting to the required winding radius, the radius can be recorded, and the turntable 239 is fixed to the front end of the front circular baffle 22 through the cooperation between the insertion rod 242 and the socket 241 to ensure the stability of the subsequent arc plate 233 when winding the hose. In this process, the clamping assembly on the left can be connected through the connecting plate 222 The spring telescopic column 221 cooperates with the upward movement to meet the winding requirements of the hose. At the same time, in order to ensure that the subsequent hose can be restored to a horizontal state, the threaded telescopic rods 33 on the front and rear sides can be rotated to make the rectangular plate 31 move up and down along the guide column 32, and the clamping assembly on the right side moves synchronously to be on the same horizontal line with the clamping assembly on the left side. Then, the hose can be wound again with different winding radii in the same way to simulate the different sizes of bending forces that the hose is subjected to in actual use. After winding for a certain period of time, the hose is restored to a horizontal state again, and the performance of the hose after this winding is tested in the same way. Then, a certain tensile force can be applied to the hose that has been restored to a horizontal state again, and its performance is also tested.

[0047] Before testing the hose, the threaded telescopic rods 33 on the front and rear sides can be rotated to make the rectangular plate 31 move up and down along the guide column 32, and the clamping assembly on the right side will move synchronously therewith, and the clamping assemblies on the left and right sides are no longer kept on the same horizontal line. After the clamping assembly on the right side is moved to a certain height, the hose is in a tilted state due to the influence of the clamping assembly on the left side. At this time, the tilt angle of the hose can be recorded and the winding test and stretching test can be performed on it in the tilted state. The hose can be flexibly changed to different tilt angles in the same way. In actual use, the hose may be at various tilt angles, such as on uneven ground or when the hose needs to cross an obstacle. By simulating these situations, the performance of the hose under complex conditions can be more realistically evaluated, and more comprehensive test results can be obtained.

[0048] When the hose is wrapped around the outside of the arc plate 233 that is evenly arranged in the circumferential direction, the arc plate 233 can contact the hose during wrapping through the protrusions on the friction plate 234 to simulate the friction resistance that the hose encounters during actual wrapping. At the same time, the friction plate 234 can be removed from the arc plate 233, and it can be selected whether to use the friction plate 234 or replace it with a friction plate 234 with protrusions of different density or size according to needs, so as to change the friction force that the hose encounters during wrapping. Testing the hose under different friction conditions can further improve the comprehensiveness of the test results and better evaluate the strength performance of the hose.

[0049] See also Figure 8 and Fig.10 A semi-annular plate 321 symmetrically arranged front and rear is provided at the upper left end of the rectangular plate 31. The sides of the front and rear semi-annular plates 321 that are separated from each other are fixedly connected to the vertical section of the L-shaped frame. Two square holes 322 distributed front and rear are opened at the positions corresponding to the horizontal sections of the L-shaped frame on the rectangular plate 31. The horizontal sections of the L-shaped frame are plugged into the corresponding square holes 322 through square rods 323. An inner ring plate 324 is detachably installed on the inner side of the semi-annular plate 321. Evenly arranged convex columns are installed on the inner ring surface of the inner ring plate 324. The left end of the semi-annular plate 321 is an inclined structure inclined outward.

[0050] During operation: before winding and stretching the hose, the square rods 323 on the front and rear sides can be pulled out from the corresponding square holes 322. At this time, the L-shaped frames on the front and rear sides are in a freely movable state. Then, the corresponding L-shaped frames are moved to make the semi-annular plates 321 on the front and rear sides fit each other. The inner ring plate 324 moves synchronously with the corresponding semi-annular plate 321. Then, the L-shaped frame and the semi-annular plate 321 can be fixed to the upper end of the rectangular plate 31 again through the cooperation between the square rods 323 and the square holes 322. At this time, The bosses on the inner sides of the front and rear inner ring surfaces can apply uniform circumferential friction to the hose during winding or stretching movement to simulate the friction the hose is subjected to when moving on the ground. In addition, according to the friction the hose is subjected to in different operating environments, the inner ring plate 324 can be flexibly removed from the inner side of the semi-annular plate 321 and replaced with an inner ring plate 324 with bosses of different densities and sizes to change the friction the hose is subjected to. At the same time, in the case of changing the inclination state of the hose as mentioned above, the bosses can apply an inclined friction force to the hose accordingly.

[0051] The winding radius, tensile force, friction force and inclination angle of the same hose during the testing process can be repeatedly compared and tested according to the single variable method. Both the concave-convex detector and the ultrasonic detector can record the test results obtained under different test conditions. The test results obtained under different test conditions can be compared and analyzed with the test results obtained under the initial test conditions to determine the performance of the hose under different test conditions. After the hose completes the bending and tensile performance testing, the clamping assembly can release the clamping of the hose and the hose can be removed. Subsequently, multiple hoses can be subjected to winding and tensile testing under the same test conditions in the same way to ensure the comparability and effectiveness of the test results.

[0052] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean 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", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0053] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, an integral connection, or a sliding connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A hose strength testing device for a farm reel sprinkler, comprising a testing platform (1), characterized in that: The upper end of the testing platform (1) is provided with a winding unit (2) for winding the hose and a stretching unit (3) for stretching the hose, from left to right; The winding unit (2) comprises a rotating cylinder (21) arranged above the detection platform (1); circular baffles (22) are installed at both the front and rear ends of the rotating cylinder (21); arc-shaped plates (233) arranged evenly in the circumferential direction are arranged on the outside of the rotating cylinder (21); an adjusting component for driving the arc-shaped plates (233) arranged in the circumferential direction to move synchronously along the radial direction of the rotating cylinder (21) is arranged inside the rotating cylinder (21); and a driving component for driving the winding unit (2) to rotate circumferentially and move forward and backward at the same time is arranged at the rear end of the circular baffle (22) located at the rear side; The stretching unit (3) comprises a rectangular plate (31) arranged above the detection platform (1); a rectangular groove for avoiding the rectangular plate (31) from moving up and down is provided at the upper end of the detection platform (1); guide posts (32) connected to the rectangular plate (31) for sliding up and down are installed at the four corners of the bottom wall of the rectangular groove; a top plate is installed between the upper ends of the guide posts (32); a threaded telescopic rod (33) symmetrically arranged in front and back and rotatably connected to the upper end surface of the rectangular plate (31) is installed in the middle of the top plate; a transverse guide rail is installed in the middle of the upper end of the rectangular plate (31); an electric slide plate (34) is slidably installed on the transverse guide rail; a fixing block (35) is installed at the upper end of the electric slide plate (34); a clamping assembly for clamping the end of the hose is provided on the circular baffle (22) located at the front side and at the left end of the fixing block (35); A mounting ring (311) is arranged above the rectangular plate (31), and a moving assembly for driving the mounting ring (311) to rotate along the circumference of the hose and to move axially at the same time is arranged at the upper end of the rectangular plate (31).

2. The agricultural reel sprinkler hose strength detection device according to claim 1 is characterized in that: The adjusting assembly comprises a moving plate (235) mounted on the inner side of the arc-shaped plate (233) and radially slidably connected to the rotating cylinder (21); a rotating plate (236) is rotatably mounted inside the rotating cylinder (21); an open through groove for avoiding the rotating plate (236) is formed on the moving plate (235); arc-shaped through grooves (237) evenly arranged in the circumferential direction are formed on the rotating plate (236); an end of the moving plate (235) away from the inner wall of the rotating cylinder (21) rotates A connecting column is movably mounted and slides through the arc-shaped through groove (237); a rotating shaft (238) is mounted at the front end of the rotating plate (236) and rotates through the front circular baffle (22); a rotating disk (239) is mounted at the front end of the rotating shaft (238); and plug holes (241) are evenly arranged around the rotating shaft (238) at the front end of the circular baffle (22); and the rotating disk (239) is plugged into and matched with the corresponding plug holes (241) through an insert rod (242).

3. The device for detecting the strength of a hose of a farm reel sprinkler according to claim 2, characterized in that: The circular baffles (22) on the front and rear sides are both rotatably mounted on a support plate (231) connected to the detection platform (1) in a front and rear sliding manner. A control plate (232) is mounted on the left end of the support plate (231). The drive assembly comprises a motor 1 (243) whose output shaft is connected to the center of the rear end of the rear circular baffle (22). The motor 1 (243) is mounted on the rear end of the rear support plate (231) through a support. A circular support plate located on the front side of the turntable (239) is mounted on the front end of the front circular baffle (22). A rotating column (244) concentric with the circular baffle (22) is mounted on the front end of the circular support plate. The rotating column (244) is rotatably connected to the vertical section of the L-shaped plate mounted on the front end of the front support plate (231).

4. The agricultural reel sprinkler hose strength detection device according to claim 3 is characterized in that: The driving assembly also includes a threaded rod (245). Two vertical plates distributed front and back are installed on the upper left side of the detection platform (1). The front end of the vertical plate located on the rear side is rotatably installed with a threaded rod (245) threadedly connected to the control plate (232). The rear end of the vertical plate located on the front side is rotatably installed with a rotating rod (246) fixedly connected to the front end of the threaded rod (245). The rotating column (244) and the rotating rod (246) are both sleeved with connecting pulleys (247) on the outside, and the rotating column (244) is fixedly connected to the corresponding connecting pulley (247). The rotating rod (246) is slidably matched with the corresponding connecting pulley (247) through a spline. The left and right connecting pulleys (247) are connected through a belt drive. The left and right connecting pulleys (247) are rotatably installed on the rear end of the same connecting plate sleeved between the rotating column (244) and the outside of the rotating rod (246).

5. The device for detecting the strength of a hose of a farm reel sprinkler according to claim 1, characterized in that: A bracket is installed on the outer side of the circular baffle (22) located at the front side, a spring telescopic column (221) is installed at the rear end of the bracket, a connecting plate (222) is installed at the lower end of the telescopic end of the spring telescopic column (221), and the clamping assembly includes a mounting plate (223), the mounting plate (223) in the left clamping assembly is fixedly connected to the connecting plate (222), the mounting plate (223) in the right clamping assembly is installed on the left end of the fixed block (35), and the end of the left mounting plate (223) away from the spring telescopic column (221) is connected to the right mounting plate ( A circular support (224) is installed at the left end of each of the two mounting plates (223), and a fixed cylinder (225) is installed at one end of the left circular support (224) away from the corresponding mounting plate (223) and the left end of the right circular support (224). A front-to-back symmetrical arc-shaped abutment plate (226) is arranged outside the fixed cylinder (225), and a mounting through groove corresponding to the arc-shaped abutment plate (226) is opened on the fixed cylinder (225), and a folding rod (227) hinged to the inner side of the arc-shaped abutment plate (226) is rotatably installed in the mounting through groove through a torsion spring shaft.

6. The agricultural reel sprinkler hose strength detection device according to claim 5, characterized in that: The end of the mounting plate (223) on the left side away from the spring telescopic column (221) and the left end of the mounting plate (223) on the right side are both installed with a bidirectional electric push rod (228), and the front and rear telescopic ends of the bidirectional electric push rod (228) are both installed with a push plate, and the side close to the front and rear push plates on the left side is installed with a semicircular pressure plate (229) connected to the end of the mounting plate (223) on the left side away from the spring telescopic column (221) for front and rear sliding connection, and the front and rear push plates on the right side are close to each other. A semicircular pressure plate (229) is also installed on one side and is slidably connected to the left end face of the right mounting plate (223). The semicircular pressure plate (229) is located on the outer side of the corresponding arc-shaped support plate (226). A circular groove matching the circular support (224) is opened at one end of the semicircular pressure plate (229) close to the circular support (224). The inner wall of the circular groove is installed with a support column (230) which is symmetrical front and back and slides through the circular support (224) and the fixed cylinder (225).

7. The agricultural reel sprinkler hose strength detection device according to claim 1, characterized in that: The moving assembly comprises an outer gear ring (312) fixedly sleeved on the right end of the mounting ring (311); a rotating gear (313) is meshed on the upper side of the outer gear ring (312); two mounting frames (314) distributed on the left and right are mounted on the upper end of the rectangular plate (31); a threaded column (315) threadedly connected to the rotating gear (313) is rotatably mounted between the middle parts of the left and right mounting frames (314); the right end of the threaded column (315) rotates through the mounting frame (314) on the right side and then engages with the second motor. The output shaft of the motor 2 (316) is connected, the motor 2 (316) is installed at the right end of the right mounting frame (314), the front and rear sides of the threaded column (315) are symmetrically provided with support rods (317) rotatably installed between the left and right mounting frames (314), the rotating gear (313) and the outer gear ring (312) are rotatably installed on the left end of the same connecting ring plate (318), and the connecting ring plate (318) is threadedly connected to the threaded column (315) and is slidably connected to the support rod (317) left and right.

8. The agricultural reel sprinkler hose strength detection device according to claim 1, characterized in that: A semi-annular plate (321) is provided at the upper left end of the rectangular plate (31) and is symmetrical in front and back. An inner ring plate (324) is detachably mounted on the inner side of the semi-annular plate (321). Evenly arranged convex columns are mounted on the inner ring surface of the inner ring plate (324). The left end of the semi-annular plate (321) is an inclined structure inclined outward.

9. The device for detecting the strength of a hose of a farm reel sprinkler according to claim 8, characterized in that: The sides of the semi-circular plates (321) separated from each other are fixedly connected to the vertical section of the L-shaped frame. Two square holes (322) distributed front and back are opened on the rectangular plate (31) at positions corresponding to the horizontal section of the L-shaped frame. The horizontal section of the L-shaped frame is plugged into and matched with the corresponding square holes (322) via a square rod (323).

10. The device for detecting the strength of a hose of a farm reel sprinkler according to claim 1, characterized in that: The outer sides of the arc-shaped plates (233) are each detachably mounted with friction plates (234), and the outer sides of the friction plates (234) are provided with evenly arranged protrusions.

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