Device and method for detecting bending resistance and bearing performance of high-strength wood pallet bearing

Abstract

The invention relates to the technical field of tray pressure detection, and discloses a device for detecting the anti-bending bearing performance of a high-strength wood tray. A tray body; and the detection assembly is used for carrying out circulating pressure bearing bending resistance detection on the tray body. According to the device for detecting the anti-bending bearing performance of the high-strength wood tray, sectional type pressure detection on the wood tray can be achieved by arranging the detection assembly, the power of needed equipment can be greatly reduced in a lever type pressure measurement mode, and compared with a hydraulic machine in a traditional mode, the lever type pressure measurement mode can be more convenient and higher in practicability. Through sectional stepping motion, weak point position pressure detection and local point position compression and bending resistance bearing capacity detection can be carried out on an omnibearing area of the wood tray, so that the detection result is more accurate, and the detection mode diversification is improved.

Description

Technical Field

[0001] The invention relates to the technical field of pallet pressure detection, and in particular to a device and method for detecting the bending and bearing performance of a high-strength wooden pallet. Background Art

[0002] Wooden pallets are horizontal platform devices used for packaging, stacking, handling and transporting goods and products as unit loads, which facilitate loading and unloading, and handling of unit materials and small quantities of materials. Wooden pallets are the most basic carriers at the logistics operation level and the most basic logistics unitization equipment. Wooden pallets are used in conjunction with forklifts to realize the mechanized handling of materials. The combination of wooden pallets and shelves can realize the orderly stacking and storage of materials and greatly improve the utilization of space.

[0003] At present, after the production of wooden pallets, it is generally necessary to conduct a standard inspection on the quality of the wooden pallets. The traditional method is generally to place the wooden pallet under a press and use the downward pressure of the press to test the load-bearing performance of the wooden pallet. Because the wooden pallet is assembled with wooden strips, there are gaps between them, and the gaps are where the wooden boards are weak in bearing capacity. Many wooden boards are damaged and broken at this position, making the pallet unusable. The detection method of the load-bearing capacity of the wooden board, including the bending capacity, is too single. Only through pressure-down detection, the load-bearing capacity of the weak position of the pallet cannot be determined, resulting in inaccurate detection results. Therefore, a device and method for testing the bending load-bearing performance of high-strength wooden pallets are proposed to solve the above-mentioned problems. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the shortcomings of the prior art, the present invention provides a device and method for testing the bearing and bending resistance of high-strength wooden pallets, which solves the problem that the prior art method for testing the bearing and bending resistance of wooden pallets is too single and cannot effectively detect the ultimate bearing capacity of the weak position of the wooden board, resulting in too large numerical deviation in the test results.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for testing the bending and load-bearing performance of high-strength wooden pallets, comprising a frame; a pallet body; a detection component for performing a cyclic pressure-bearing bending test on the pallet body; the detection component includes a lever pressure device for applying pressure to the pallet body using a lever-type pressure; a pressure display device for displaying the pressure value of the lever pressure device; and a circulation device for automatically controlling the position displacement of the pallet body each time a pressure-bearing test is performed to achieve an array-type cyclic test.

[0008] Preferably, the lever pressure device includes two telescopic cylinders, the tail of the telescopic cylinder is rotatably connected to the inside of the frame through an axle, the output end of the telescopic cylinder is rotatably connected to a support rod, both ends of the support rod are connected to brackets, a rotating rod is rotatably connected to the bracket, and the rotating rod is connected to the frame through an adjusting piece, one side of the bracket is fixedly connected to a pressing sleeve, the inside of the pressing sleeve is connected to a pressing rod, one end of the pressing rod is mounted with a pressing wheel, and the surface of the pressing wheel abuts against the upper surface of the tray body.

[0009] Preferably, the adjusting member comprises a square plate, an adjusting screw rod is connected to the inner thread of the square plate, the top of the adjusting screw rod is rotatably connected to the frame, and the rotating rod is rotatably connected to the square plate.

[0010] Preferably, the pressure display device includes a pressure plate, the surface of the pressure plate is fixed to the pressure sleeve through a plate body, a pointer is rotatably connected to the pressure plate, the pointer is fixedly connected to a pinion through an axle, a small rack is meshed on the surface of the pinion, one end of the small rack is fixedly connected to a sliding plate, both ends of the sliding plate are fixedly connected to two pressure rods, one end of the pressure rod is connected to a pressure spring, and the pressure spring is located inside the pressure sleeve.

[0011] Preferably, the circulation device includes a frame plate, and the upper and lower positions of the inner wall of the frame plate are respectively connected to an upper ratchet plate and a lower ratchet plate through springs, the surface of the upper ratchet plate is connected to a double-toothed ratchet, one side of the double-toothed ratchet is fixedly connected to a connecting gear through an axle rod, the surface of the connecting gear is meshed with a power gear, the axis of the power gear is connected to a driving wheel, the surface of the driving wheel is connected to a transmission wheel through a belt drive, the transmission wheel and the driving wheel are both rotatably connected to the inside of the frame, and one side of the frame plate is rotatably connected to the support rod.

[0012] Preferably, the upper ratchet plate is located above the inner ratchet of the double-tooth ratchet, and the lower ratchet plate is located below the outer ratchet of the double-tooth ratchet. A compression spring is abutted against the side of the double-tooth ratchet, and one end of the compression spring is fixed inside the frame.

[0013] Preferably, the surface of the frame plate is slidably connected to a sliding bar through a T-slot, the bottom of the sliding bar is fixedly connected to a circular plate, one side of the circular plate is connected to a sliding frame, the surface of the sliding frame is slidably connected to a partition, the partition is fixed inside the frame, the bottom side of the sliding frame is fixedly connected to a through rod, the surface of the through rod is fixedly connected to a second push plate, and the tail end of the through rod is fixedly connected to the first push plate.

[0014] Preferably, a positioning plate is fixedly connected to the belt, a rotating card is rotatably connected to the positioning plate, and the rotating card is clamped with the tray body.

[0015] A method for testing the bending bearing performance of a high-strength wooden pallet.

[0016] Step S1: Positioning, positioning the tray body, and clamping the tray body with a rotating card;

[0017] Step S2: The lever pressure detection display controls the extension of the two telescopic cylinders to drive the support rod to be lifted, and controls the pressure rod to drive the pressure wheel to apply pressure on the tray body through the lever principle, and then uses the reverse pressure of the pressure wheel to push the pressure rod to squeeze the pressure spring, and uses the sliding of the sliding plate to drive the rotation of the small gear through the sliding of the small rack, thereby controlling the pointer to rotate on the surface of the pressure plate, and then displaying the pressure;

[0018] Step S3: Stepwise shifting. Each time the support rod moves, the frame plate will be driven to move, and the shift of the frame plate will drive the upper ratchet plate inside to make a unidirectional rotation of the double-tooth ratchet, thereby driving the unidirectional rotation of the connecting gear. The meshing rotation of the gears drives the stepwise movement of the belt, and the connection of the rotating card drives the stepwise movement of the tray body. Therefore, after each pressure test, the tray body will be shifted, and then the top of the tray body will be tested indiscriminately in a cyclic manner.

[0019] (III) Beneficial effects

[0020] Compared with the prior art, the present invention provides a device and method for testing the bending load-bearing performance of high-strength wooden pallets, which has the following beneficial effects:

[0021] 1. The device for testing the bending and bearing performance of high-strength wooden pallets can realize segmented pressure testing of wooden pallets by setting up testing components, and the use of lever-type pressure testing can greatly reduce the power of the required equipment. Compared with the traditional hydraulic press, the lever pressure method can be more convenient. Through segmented step-by-step movement, it can perform pressure testing on weak points in all directions of the wooden pallet, and test the compression and bending bearing capacity of local points of the pallet, so that the test results are more accurate and the testing methods are more diversified. Compared with the traditional comprehensive pressure testing equipment, this technical solution can perform segmented pressure testing on multiple positions of the pallet, and the testing process is fully automated, without excessive intervention by the operator, simple and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall front structure of a device for testing the bending load-bearing performance of a high-strength wooden pallet proposed by the present invention;

[0023] Figure 2 This is a schematic diagram of the overall side structure of a device for testing the bending bearing performance of a high-strength wooden pallet proposed by the present invention;

[0024] Figure 3 This is a schematic structural diagram of a lever pressing device for testing the bending bearing performance of a high-strength wooden pallet proposed by the present invention;

[0025] Figure 4 This is a schematic diagram of a pressure display device for testing the bending bearing performance of a high-strength wooden pallet proposed by the present invention;

[0026] Figure 5 A schematic diagram of the connection structure of a first push plate and a second push plate of a device for testing the bending bearing performance of a high-strength wooden pallet proposed by the present invention;

[0027] Figure 6 A schematic diagram of a partition connection structure of a device for testing the bending bearing performance of a high-strength wooden pallet proposed by the present invention;

[0028] Figure 7 This is a schematic structural diagram of a circulating device for testing the bending bearing performance of a high-strength wooden pallet proposed by the present invention;

[0029] Figure 8 A schematic diagram of the connection structure of the frame plate of a device for testing the bending bearing performance of a high-strength wooden pallet proposed by the present invention;

[0030] Fig. 9 The present invention provides a schematic diagram of the connection structure of a rotating card of a device for testing the bending bearing performance of a high-strength wooden pallet.

[0031] In the figure: 1, frame; 2, detection assembly; 201, telescopic cylinder; 202, bracket; 203, support rod; 204, rotating rod; 205, pressing sleeve; 206, pressure spring; 207, pressure rod; 208, pressure wheel; 209, square plate; 210, adjusting screw rod; 211, pressure plate; 212, pointer; 213, small gear; 214, small rack; 215, sliding plate; 216, transmission wheel; 217 , driving wheel; 218, first push plate; 219, second push plate; 220, sliding frame; 221, round plate; 222, sliding bar; 223, frame plate; 224, through rod; 225, partition; 226, power gear; 227, connecting gear; 228, double-tooth ratchet; 229, extrusion spring; 230, upper ratchet plate; 231, lower ratchet plate; 232, positioning plate; 233, turning card; 3, tray body. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Example 1

[0034] See also Figure 1-Figure 9 A device for testing the bending resistance of a high-strength wooden pallet comprises a frame 1; a pallet body 3; a testing component 2 for performing a cyclic pressure-bearing bending resistance test on the pallet body 3; the testing component 2 comprises a lever pressure device for applying pressure to the pallet body 3 using a lever-type pressure.

[0035] In this embodiment, the lever pressure device includes two telescopic cylinders 201, the tail of the telescopic cylinder 201 is rotatably connected to the inside of the frame 1 through an axle rod, the output end of the telescopic cylinder 201 is rotatably connected to a support rod 203, both ends of the support rod 203 are connected to a bracket 202, the bracket 202 is rotatably connected to a rotating rod 204, the rotating rod 204 is connected to the frame 1 through an adjusting member, one side of the bracket 202 is fixedly connected to a pressing sleeve 205, the inside of the pressing sleeve 205 is connected to a pressing rod 207, one end of the pressing rod 207 is installed with a pressing wheel 208, the surface of the pressing wheel 208 abuts against the upper surface of the tray body 3. Controlling the extension of the telescopic cylinder 201 will drive the bracket 202 on the support rod 203 to rotate along the center of the rotating rod 204. Using the lever principle, the pressure sleeve 205 will drive the pressure rod 207 to press down, and then the pressure wheel 208 will be pressed against the upper surface of the pallet body 3. After that, the pressure is transmitted to the inside of the pressure spring 206 through the pressure rod 207 for squeezing. At this time, the pressure on the pallet body 3 will be similar to the load, so as to detect the load-bearing capacity of the wooden pallet. When the wooden pallet is loaded, the gaps between the pores will produce a certain degree of bending changes, which directly detects the limit value of its bending resistance.

[0036] Furthermore, the adjusting member includes a square plate 209, and an adjusting screw rod 210 is connected to the inner thread of the square plate 209. The top of the adjusting screw rod 210 is rotatably connected to the frame 1, and the rotating rod 204 is rotatably connected to the square plate 209. Because the telescopic cylinder 201 is fixed in telescopic form, the operator can control the rotation of the adjusting screw rod 210, which will drive the square plate 209 to move up and down. Therefore, the position of the rotation point of the lever movement, that is, the height of the rotating rod 204, changes at this time, so the distance between the pressing wheel 208 on the pressing rod 207 and the pallet body 3 will be different, and the distance is equal to the pressure. The lower the rotation point, the same rotation stroke, the greater the downward pressing distance will be, the greater the strength of the extrusion pressure spring 206 will be, so the generated simulated load will be greater, and the operator will make appropriate adjustments according to the carrying capacity of the wooden pallet.

[0037] Furthermore, a pressure display device is used to display the pressure value of the lever pressure device;

[0038] The pressure display device includes a pressure plate 211, the surface of which is fixed on the pressure sleeve 205 through a plate body, a pointer 212 is rotatably connected to the pressure plate 211, and the pointer 212 is fixedly connected to a pinion 213 through a shaft, a small rack 214 is meshed on the surface of the pinion 213, one end of the small rack 214 is fixedly connected to a sliding plate 215, and both ends of the sliding plate 215 are fixedly connected to two pressure rods 207, one end of the pressure rod 207 is connected to a pressure spring 206, and the pressure spring 206 is located inside the pressure sleeve 205. The sliding of the pressure rod 207 drives the sliding of the sliding plate 215, and then drives the synchronous movement of the small rack 214, and through the meshing transmission with the pinion 213, it will drive the rotation of the pointer 212, so the elastic extrusion of the pressure spring 206 is used to convert the lateral movement distance into a rotating pressure display value, which is convenient for the inspection personnel to observe.

[0039] In addition, the circulation device is used to automatically control the position displacement of the tray body 3 each time the pressure bearing test is performed to achieve array-type circulation testing.

[0040] The circulation device includes a frame plate 223, and the upper and lower positions of the inner wall of the frame plate 223 are respectively connected to an upper ratchet plate 230 and a lower ratchet plate 231 through springs. The surface of the upper ratchet plate 230 is connected to a double-toothed ratchet 228, and one side of the double-toothed ratchet 228 is fixedly connected to a connecting gear 227 through an axle rod. The surface of the connecting gear 227 is meshed with a power gear 226. The axis of the power gear 226 is connected to a driving wheel 217, and the surface of the driving wheel 217 is connected to a transmission wheel 216 through a belt drive. The transmission wheel 216 and the driving wheel 217 are both rotatably connected to the inside of the frame 1, and one side of the frame plate 223 is rotatably connected to the support rod 203. When the support rod 203 rotates, the frame plate 223 will be pulled to move synchronously. The frame plate 223 is connected to the support rod 203 during rotation, so there will be no motion interference as a whole. During the pulling process of the frame plate 223, the upper ratchet plate 230 will be driven to rotate the double-toothed ratchet 228 counterclockwise, thereby driving the connecting gear 227 to rotate counterclockwise, and then the driving wheel 217 will be driven to rotate through the meshing of the gears. Therefore, through the transmission of the belt, the tray body 3 will be driven to move right through the transfer card 233 on the belt, thereby performing a segmented pressure load detection.

[0041] In addition, the upper ratchet plate 230 is located above the inner ratchet of the double-toothed ratchet 228, the lower ratchet plate 231 is located below the outer ratchet of the double-toothed ratchet 228, and the side of the double-toothed ratchet 228 is abutted with an extrusion spring 229, one end of which is fixed inside the frame 1. Because the entire design process is that the upper ratchet plate 230 is to be meshed with the inner ratchet of the double-toothed ratchet 228, and the lower ratchet plate 231 is to be meshed with the outer ratchet of the double-toothed ratchet 228, the change of the displacement direction is achieved by meshing with different ratchets.

[0042] It is worth noting that the surface of the frame plate 223 is slidably connected to a slide bar 222 through a T-slot, and the purpose of the slide bar 222 is mainly to limit the moving direction of the frame plate 223. The bottom of the slide bar 222 is fixedly connected to a circular plate 221, one side of the circular plate 221 is connected to a sliding frame 220, the surface of the sliding frame 220 is slidably connected to a partition plate 225, and the partition plate 225 is fixed inside the frame 1. The bottom side of the sliding frame 220 is fixedly connected to a through rod 224, the surface of the through rod 224 is fixedly connected to a second push plate 219, and the tail end of the through rod 224 is fixedly connected to the first push plate 218. When the tray body 3 gradually detects and moves to the position of the first push plate 218, it will push the first push plate 218 to move a short distance, and then the first push plate 218 drives the sliding frame 220 to slide on the partition 225 through the connection of the through rod 224, and the sliding frame 220 will drive the circular plate 221 to move, and then drive the sliding bar 222 on the circular plate 221 to move a short distance. At this time, the frame plate 223 will be lifted a short distance. Because one end of the frame plate 223 is rotatably connected and is in an inclined state, the bottom The sliding of the T-shaped slideway will drive it to move up a short height, so that the lower ratchet plate 231 below will mesh with the outer ratchet of the double-toothed ratchet 228, and the upper ratchet plate 230 above will be separated from the inner ratchet of the double-toothed ratchet 228. At this time, the telescopic cylinder 201 drives the movement of the frame plate 223, and the meshing of the lower ratchet plate 231 below and the double-toothed ratchet 228 will drive the reverse rotation of the connecting gear 227, thereby controlling the reverse conveying of the belt, and the pallet body 3 will continue to circulate and convey in reverse. A positioning plate 232 is fixedly connected to the belt, and a rotating card 233 is rotatably connected to the positioning plate 232, and the rotating card 233 is engaged with the pallet body 3. The rotating card 233 is rotated to clamp it on the column of the pallet body 3, and the pallet body 3 is clamped by the rotating card 233, so that it can push the pallet body 3 and pull the pallet body 3 to achieve position conversion.

[0043] Example 2

[0044] A method for testing the bending bearing performance of high-strength wooden pallets.

[0045] Step S1: Positioning, positioning the position of the tray body 3, and clamping the tray body 3 with the turning clamp 233;

[0046] Step S2: The lever pressure detection shows that the extension of the two telescopic cylinders 201 will drive the support rod 203 to be lifted, and the lever principle is used to control the pressure rod 207 to drive the pressure wheel 208 to apply pressure on the tray body 3, and then the reverse pressure of the pressure wheel 208 is used to push the pressure rod 207 to squeeze the pressure spring 206, and the sliding plate 215 slides through the sliding of the small rack 214 to drive the rotation of the small gear 213, and then control the pointer 212 to rotate on the surface of the pressure plate 211, so as to display the pressure;

[0047] Step S3: stepwise shifting. Each time the support rod 203 moves, the frame plate 223 is driven to move, and the shifting of the frame plate 223 will drive the upper ratchet plate 230 inside to make a unidirectional rotation of the double-toothed ratchet 228, thereby driving the unidirectional rotation of the connecting gear 227. The meshing rotation of the gears drives the stepwise movement of the belt, and the connection of the rotating card 233 drives the stepwise movement of the tray body 3. Therefore, after each pressure test, the tray body 3 will be shifted, and then the upper part of the tray body 3 will be tested in an indiscriminate cyclic manner.

[0048] Working principle: first, the pallet body 3 needs to be placed on the detection platform of the rack 1, and then the rotating card 233 is rotated to clamp it on the column of the pallet body 3. Then, the extension of the telescopic cylinder 201 needs to be controlled, which will drive the bracket 202 on the support rod 203 to rotate along the center of the circle of the rotating rod 204. By using the lever principle, the pressure sleeve 205 will drive the pressure rod 207 to press down, and then the pressure wheel 208 will be pressed against the upper surface of the pallet body 3. Then the pressure is transmitted to the inside of the pressure spring 206 through the pressure rod 207 for squeezing. At this time, the pressure on the pallet body 3 will be similar to the load, so as to detect the load-bearing capacity of the wooden pallet. When the wooden pallet is subjected to load, the gaps between the pallets will produce a certain degree of bending changes, which directly detects the limit value of its bending resistance. Then, the sliding of the pressure rod 207 drives the sliding of the sliding plate 215, and then drives the synchronous movement of the small rack 214. After the meshing transmission of the small gear 213, it will drive the rotation of the pointer 212. Therefore, the elastic extrusion of the pressure spring 206 is used to convert the lateral movement distance into a rotating pressure display value, which is convenient for the inspection personnel to observe. When a single wooden board of the pallet body 3 breaks, the strength of the wooden pallet's load and bending resistance can be confirmed by the limit value before the break. In addition, the entire solution is provided with an adjustment part. Since the telescopic cylinder 201 is fixed in telescopic position, the operator can control the rotation of the adjustment screw 210, which will drive the square plate 209 to move up and down. Therefore, the rotation point position of the lever movement, that is, the height of the rotating rod 204 changes, so the distance at which the pressure wheel 208 on the pressure rod 207 presses against the pallet body 3 will be different, and the distance is equal to the pressure. The lower the rotation point and the same rotation stroke, the greater the downward pressure distance will be, and the greater the strength of the extrusion pressure spring 206 will be, so the generated simulated load will be greater, and the operator will make appropriate adjustments according to the carrying capacity of the wooden pallet.The entire device is also provided with a belt, and the transmission of the belt will drive the overall movement of the tray body 3 during the overall inspection, so as to facilitate the segmented inspection of the tray body 3. The specific process is that when the support rod 203 rotates, the frame plate 223 will be pulled synchronously to move, and the frame plate 223 is connected to the support rod 203 during rotation, so there will be no movement interference as a whole. In the process of pulling the frame plate 223, the upper ratchet plate 230 will be driven to rotate the double-toothed ratchet 228 counterclockwise, and then the connecting gear 227 will be driven to rotate counterclockwise, and then the driving wheel 217 will be driven to rotate through the meshing of the gears, so through the transmission of the belt, it will be The transfer card 233 on the belt drives the tray body 3 to move right, and when the telescopic cylinder 201 contracts, it will synchronously drive the frame plate 223 to reset synchronously. During the synchronous reset process, the upper ratchet plate 230 and the double-toothed ratchet 228 are in the forward gear state, so the spring connected to the upper ratchet plate 230 and the frame plate 223 will be squeezed, and finally the upper ratchet plate 230 will slide up to make way, and the squeezing spring 229 connected to the side of the double-toothed ratchet 228 provides a certain squeezing force to ensure that the connecting gear 227 will not rotate in the forward gear reset state, and the belt will not rotate. Therefore, with each extension and retraction of the telescopic cylinder 201, the belt will be controlled to drive the tray to move. When the upper ratchet plate 230 forms a one-way ratchet motion, after the teeth of the upper ratchet plate 230 disengage from the double-tooth ratchet wheel 228, the continued extension of the telescopic cylinder 201 will not cause movement of the pallet body 3, but directly control the pressure wheel 208 to generate load pressure on the pallet body 3 for detection, thereby avoiding the belt still pulling the pallet body 3 to move during the ballasting test and causing damage.This cycle is repeated. When the tray body 3 gradually detects and moves to the position of the first push plate 218, it will push the first push plate 218 to move a short distance. Then, the first push plate 218 drives the sliding frame 220 to slide on the partition 225 through the connection of the through rod 224, and the sliding frame 220 will drive the circular plate 221 to move, thereby driving the sliding bar 222 on the circular plate 221 to move a short distance. At this time, the frame plate 223 will be lifted a short distance. Because one end of the frame plate 223 is rotatably connected and is in an inclined state, the sliding of the bottom through the T-shaped slide groove will drive it to move up a short height, so that the lower ratchet plate 231 below is engaged with the outer ratchet of the double-toothed ratchet 228. The upper ratchet plate 230 will be separated from the inner ratchet of the double-toothed ratchet 228. At this time, the telescopic cylinder 201 drives the frame plate 223 to move, and the meshing of the lower ratchet plate 231 and the double-toothed ratchet 228 will drive the reverse rotation of the connecting gear 227, thereby controlling the reverse conveying of the belt. At this time, the pallet body 3 will continue to cyclically convey in the reverse direction, and the entire through rod 224 has a certain damping to prevent the ratchet gear from causing the displacement of the sliding frame 220 during the movement. Only when the pallet body 3 moves to the extreme position will it drive it to slide, and the extreme position is the contact position of the first push plate 218 and the second push plate 219, and then the whole will form a reverse cyclic displacement pressure load test. In this way, the cyclic load resistance and bending resistance of the pallet body 3 are tested, and the load resistance fatigue strength of the pallet body 3 is tested.

[0049] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

Claims

1. A device for testing the bending bearing performance of high-strength wooden pallets, characterized in that: include: Rack (1); Tray body (3); A testing component (2) is used to perform a cyclic pressure bearing bending test on the pallet body (3); The detection component (2) comprises A lever pressure device, which applies pressure to the tray body (3) by lever pressure; A pressure display device, used to display the pressure value of the lever pressure device; The circulation device is used to automatically control the position shift of the tray body (3) each time a pressure bearing test is performed, thereby realizing array-type circulation testing.

2. The device for testing the bending bearing performance of high-strength wooden pallets according to claim 1 is characterized in that: The lever pressing device comprises two telescopic cylinders (201), the tail of the telescopic cylinder (201) is rotatably connected to the inside of the frame (1) through an axle rod, the output end of the telescopic cylinder (201) is rotatably connected to a support rod (203), both ends of the support rod (203) are connected to a bracket (202), a rotating rod (204) is rotatably connected to the bracket (202), and the rotating rod (204) is connected to the frame (1) through an adjusting member, a pressing sleeve (205) is fixedly connected to one side of the bracket (202), a pressing rod (207) is connected to the inside of the pressing sleeve (205), a pressing wheel (208) is installed at one end of the pressing rod (207), and the surface of the pressing wheel (208) abuts against the upper surface of the tray body (3).

3. The device for testing the bending bearing performance of high-strength wooden pallets according to claim 2 is characterized in that: The adjusting member comprises a square plate (209), the square plate (209) is internally threadedly connected to an adjusting screw rod (210), the top of the adjusting screw rod (210) is rotatably connected to the frame (1), and the rotating rod (204) is rotatably connected to the square plate (209).

4. The device for testing the bending bearing performance of high-strength wooden pallets according to claim 3 is characterized in that: The pressure display device comprises a pressure plate (211), the surface of the pressure plate (211) is fixed on the pressure sleeve (205) through a plate body, a pointer (212) is rotatably connected to the pressure plate (211), the pointer (212) is fixedly connected to a pinion (213) through a shaft, a small rack (214) is meshed on the surface of the pinion (213), one end of the small rack (214) is fixedly connected to a sliding plate (215), both ends of the sliding plate (215) are fixedly connected to two pressure rods (207), one end of the pressure rod (207) is connected to a pressure spring (206), and the pressure spring (206) is located inside the pressure sleeve (205).

5. The device for testing the bending bearing performance of high-strength wooden pallets according to claim 4 is characterized in that: The circulation device comprises a frame plate (223), wherein the upper and lower positions of the inner wall of the frame plate (223) are respectively connected to an upper ratchet plate (230) and a lower ratchet plate (231) via springs, the surface of the upper ratchet plate (230) is connected to a double-toothed ratchet (228), one side of the double-toothed ratchet (228) is fixedly connected to a connecting gear (227) via a shaft rod, the surface of the connecting gear (227) is meshed with a power gear (226), the axis of the power gear (226) is connected to a driving wheel (217), the surface of the driving wheel (217) is connected to a transmission wheel (216) via a belt drive, the transmission wheel (216) and the driving wheel (217) are both rotatably connected to the inside of the frame (1), and one side of the frame plate (223) is rotatably connected to a support rod (203).

6. The device for testing the bending bearing performance of a high-strength wooden pallet according to claim 5 is characterized in that: The upper ratchet plate (230) is located above the inner ratchet of the double-toothed ratchet (228), and the lower ratchet plate (231) is located below the outer ratchet of the double-toothed ratchet (228). A compression spring (229) is abutted against the side of the double-toothed ratchet (228), and one end of the compression spring (229) is fixed inside the frame (1).

7. The device for testing the bending bearing performance of high-strength wooden pallets according to claim 6 is characterized in that: The surface of the frame plate (223) is slidably connected to a slide bar (222) via a T-slot, the bottom of the slide bar (222) is fixedly connected to a circular plate (221), one side of the circular plate (221) is connected to a sliding frame (220), the surface of the sliding frame (220) is slidably connected to a partition plate (225), the partition plate (225) is fixed inside the frame (1), the bottom side of the sliding frame (220) is fixedly connected to a through rod (224), the surface of the through rod (224) is fixedly connected to a second push plate (219), and the tail end of the through rod (224) is fixedly connected to the first push plate (218).

8. The device for testing the bending bearing performance of high-strength wooden pallets according to claim 5 is characterized in that: A positioning plate (232) is fixedly connected to the belt, a rotating card (233) is rotatably connected to the positioning plate (232), and the rotating card (233) is clamped with the tray body (3).

9. A method for testing the bending bearing performance of high-strength wooden pallets, characterized in that: The device for testing the bending bearing performance of a high-strength wooden pallet according to any one of claims 1 to 8 further comprises the following steps: Step S1: Positioning, positioning the position of the tray body (3), and clamping the tray body (3) with a rotating clamp (233); Step S2: The lever pressure detection shows that the extension of the two telescopic cylinders (201) is controlled to drive the support rod (203) to rise, and the lever principle is used to control the pressure rod (207) to drive the pressure wheel (208) to apply pressure on the tray body (3). Then, the reverse pressure of the pressure wheel (208) is used to push the pressure rod (207) to squeeze the pressure spring (206). The sliding plate (215) slides, and the small rack (214) slides to drive the small gear (213) to rotate, thereby controlling the pointer (212) to rotate on the surface of the pressure plate (211), thereby displaying the pressure. Step S3: stepwise shifting. Each time the support rod (203) moves, the frame plate (223) will be driven to move, and the shifting of the frame plate (223) will drive the upper ratchet plate (230) inside to make a unidirectional rotation of the double-toothed ratchet (228), thereby driving the unidirectional rotation of the connecting gear (227). The meshing rotation of the gears drives the stepwise movement of the belt, and the connection of the rotating card (233) drives the stepwise movement of the tray body (3). Therefore, after each pressure test, the tray body (3) will be driven to shift, thereby performing an indiscriminate cyclic test on the top of the tray body (3).

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