Compression resistance testing device for tray

Abstract

The invention discloses a compression resistance testing device for a tray, and relates to the technical field of compression resistance testing, the compression resistance testing device comprises a testing frame and an edge compression resistance testing assembly, the top of the inner wall of the testing frame is connected with the edge compression resistance testing assembly through a supporting column, and the bottom of the outer side face of a transmission belt is connected with a transmission sliding piece. According to the compression resistance testing device for the tray, the transmission sliding piece preferentially lifts the linkage rod to enable the pressure applying piece to ascend, the pressure applying piece moves to the next testing area along with meshing of the insertion teeth and the transmission gear, pressure is gradually applied by means of flowing of transmission liquid when the pressure applying piece descends, and therefore the situation that the edge of the tray is suddenly stressed and damaged is prevented; the operation is circulated along with the transmission of the transmission belt, so that the pressure applying piece surrounds the tray for a circle to perform automatic continuous pressure resistance test on different parts at the edge of the tray, and the total length of the tray can be adjusted by plugging and unplugging the plugging teeth, so that the displacement distance of the pressure applying piece each time is adjusted, and the pressure applying force can be adjusted by adjusting the weight of the weight; therefore, the application range is widened.

Description

Technical Field

[0001] The invention relates to the technical field of compression testing, in particular to a compression testing device for a pallet. Background Art

[0002] As a loading platform, a pallet can often transform static objects into dynamic objects, that is, after the objects are placed on the pallet, they can move with the pallet. Most pallets are rectangular or circular in shape and are mostly made of plastic. In order to ensure the safety of plastic pallets when used, the pallets need to be subjected to a compression test device. Specifically, the compression test device is used to gradually apply vertical pressure to the front of the pallet. If the pressure reaches the preset value and the pallet is not deformed, it means that the pallet is of qualified quality.

[0003] When performing a compression test on a pallet, the existing compression test device can usually only apply pressure to the front area of ​​the pallet, and often omits or can only simply perform a compression test on the edge of the pallet, and cannot perform continuous automated compression testing on all parts of the edge of the pallet.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a compression test device for a pallet is proposed. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a compression test device for a pallet, which solves the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a compressive testing device for a pallet, comprising a testing frame and an edge compressive testing assembly, the top of the inner wall of the testing frame is connected to the edge compressive testing assembly through a pillar, the edge compressive testing assembly comprises a suspended plate, a driving motor, a driving wheel, a transmission belt, a magnetic adsorption groove, a splicing tooth, a transmission gear, a pulley, a slide, a hydraulic cylinder, a piston rod, a connecting pipe, a weight plate, a pressure piece, a connecting rod and a transmission slide, the surface of the suspended plate is rotatably connected with a driving wheel, the top of any of the driving wheels is connected to a driving motor, the outer wall of the driving wheel is sleeved with a transmission belt, and the transmission The outer side surface of the moving belt is provided with magnetic adsorption grooves at equal intervals, and splicing teeth are inserted inside the magnetic adsorption grooves. A slide groove is provided on the surface of the suspended plate, and a pulley is slidably connected inside the slide groove. A transmission gear is provided on the top of the pulley, and a hydraulic cylinder is fixed to the outer side surface of the pulley through a bracket. A piston rod is passed through the inside of the hydraulic cylinder, and connecting pipes are connected to the upper and lower parts of the side surfaces of the hydraulic cylinder. A weight disk is provided on the top of the piston rod, and a pressure piece is fixed to the bottom of the piston rod. A connecting rod is connected to the surface of the middle disc of the piston rod, and a transmission slide is connected to the bottom of the outer side surface of the transmission belt, and a movable ball is embedded on the surface of the transmission slide.

[0007] Furthermore, the transmission gear is connected to the transmission belt through the splicing teeth, and the transmission slide is located between the transmission gear and the splicing teeth.

[0008] Furthermore, a hydraulic cylinder is fixed in the middle of the top surface of the test frame, and a pressure head is fixed at the bottom end of the hydraulic cylinder while passing through the suspended plate.

[0009] Furthermore, the upper space of the middle disc of the piston rod inside the hydraulic cylinder is connected with the lower space of the middle disc through a connecting pipe, and the middle disc of the piston rod forms a transmission structure through a connecting rod and a transmission slide.

[0010] Furthermore, the number of the driving motors is one to four, and the force exerted by the transmission belt during transmission is greater than the downward force exerted by the pressure member.

[0011] Furthermore, a penetration plate is fixed to the inner side surface of the pulley, and a limiting component is penetrated inside the penetration plate.

[0012] Furthermore, the limiting assembly includes a penetration rod and a trapezoidal force-bearing block, and the bottom of the penetration rod is fixed with a trapezoidal force-bearing block.

[0013] Furthermore, the limiting assembly also includes a limiting clamping column, and the limiting clamping column is fixed to the bottom of the trapezoidal force-bearing block.

[0014] Furthermore, a tooth groove is provided on the surface of the suspended plate below the shaped force-bearing block, and the tooth groove is engaged and connected with the limiting clamping column.

[0015] Furthermore, a support bracket is fixed to the bottom surface of the test frame, and a tray is placed inside the support bracket.

[0016] The present invention provides a compressive testing device for a pallet, which has the following beneficial effects: 1. The pallet compression test device drives the transmission belt through the driving motor, so that the transmission slide first lifts the linkage rod to make the pressure piece rise, and then the splicing teeth mesh with the transmission gear to make it rotate, so that the pressure piece shifts to the next test area, the pressure of the pressure piece is adjusted by the weight of the weight, and when the pressure piece descends, the pressure is gradually applied by the flow of the transmission fluid to prevent the edge of the pallet from being suddenly stressed and damaged, and as the transmission belt drives the above operation, the pressure piece goes around the pallet to perform an automatic continuous compression test on different parts of the edge, and the total length can be adjusted by plugging and unplugging the splicing teeth, so as to adjust the distance of each displacement of the pressure piece, and the pressure can be adjusted by adjusting the weight of the weight, so as to improve the scope of application.

[0017] 2. The pallet compression test device, before the splice teeth are meshed with the transmission gear, the transmission slide first contacts the trapezoidal force block through transmission, and the trapezoidal force block is forced to lift up by the transmission of the transmission slide, so that the limit clamping column is separated from the tooth groove, so that when the splice teeth and the transmission gear are subsequently meshed and transmitted, the pulley can slide along the inside of the slide groove, and after the splice teeth and the transmission gear are separated, the transmission slide is also separated from the trapezoidal force block, at this time, the trapezoidal force block naturally descends and resets, so that the limit clamping column and the tooth groove are re-engaged, thereby limiting the pulley after each movement, preventing the pressure-applying member from moving when descending for compression test, causing deviation of the test part. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the internal structure of a test frame of a compression test device for a pallet of the present invention; Figure 2 It is a schematic structural diagram of a transmission belt of a compression test device for a pallet according to the present invention from a right side perspective; Figure 3 It is a schematic structural diagram of a transmission belt of a compression test device for a pallet according to the present invention from a left side perspective; Figure 4 This is a schematic diagram of the bottom structure of a suspended plate of a compressive testing device for a pallet of the present invention; Figure 5 It is a schematic diagram of the inner side structure of a pulley of a compression test device for a pallet of the present invention; Figure 6 This is a schematic diagram of the internal structure of a hydraulic cylinder of a compression test device for a pallet of the present invention.

[0019] In the figure: 1. test frame; 2. edge compression test assembly; 201. suspended plate; 202. drive motor; 203. drive wheel; 204. transmission belt; 205. magnetic adsorption groove; 206. splice teeth; 207. transmission gear; 208. pulley; 209. slide; 210. hydraulic cylinder; 211. piston rod; 212. connecting pipe; 213. weight plate; 214. pressure piece; 215. connecting rod; 216. transmission slide; 3. hydraulic cylinder; 4. pressure head; 5. penetration plate; 6. limit assembly; 601. penetration rod; 602. trapezoidal force block; 603. limit column; 7. tooth groove; 8. support bracket. DETAILED DESCRIPTION

[0020] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0021] like Figure 1-Figure 6As shown, the present invention provides a technical solution: a compressive test device for a pallet, comprising a test frame 1 and an edge compressive test assembly 2, the top of the inner wall of the test frame 1 is connected to the edge compressive test assembly 2 through a pillar, the edge compressive test assembly 2 comprises a suspended plate 201, a drive motor 202, a drive wheel 203, a transmission belt 204, a magnetic adsorption groove 205, a splicing tooth 206, a transmission gear 207, a pulley 208, a slide 209, a hydraulic cylinder 210, a piston rod 211, a connecting pipe 212, a weight plate 213, a pressure piece 214, a connecting rod 215 and a transmission slide 216, the suspension The surface of the empty plate 201 is connected to driving wheels 203 for rotation, and the top of any driving wheel 203 is connected to a driving motor 202. The outer wall of the driving wheel 203 is sleeved with a transmission belt 204, and the outer side of the transmission belt 204 is provided with magnetic adsorption grooves 205 at equal intervals, and the inside of the magnetic adsorption groove 205 is plugged with a splicing tooth 206. The surface of the suspended plate 201 is provided with a slide groove 209, and the inside of the slide groove 209 is slidably connected to a pulley 208, and a transmission gear 207 is provided on the top of the pulley 208, and a hydraulic cylinder 210 is fixed to the outer side of the pulley 208 through a bracket, and the inner side of the hydraulic cylinder 210 is provided with a transmission gear 207. A piston rod 211 is passed through the top of the hydraulic cylinder 210, and a connecting pipe 212 is connected to the upper and lower sides of the hydraulic cylinder 210. A weight plate 213 is arranged on the top of the piston rod 211, and a pressure member 214 is fixed to the bottom of the piston rod 211. A linkage rod 215 is connected to the surface of the middle disc of the piston rod 211. A transmission slide 216 is connected to the bottom of the outer side of the transmission belt 204, and a movable ball is embedded in the surface of the transmission slide 216. The transmission gear 207 is connected to the transmission belt 204 through the splicing tooth 206, and the transmission slide 216 is located between the transmission gear 207 and the splicing tooth 206. The test frame A hydraulic cylinder 3 is fixed in the middle of the top surface of the test frame 1, and the bottom end of the hydraulic cylinder 3 passes through the suspended plate 201 and is fixed with a pressure head 4. The upper space of the middle disc of the piston rod 211 inside the hydraulic cylinder 210 is connected with the lower space of the middle disc through a connecting pipe 212, and the middle disc of the piston rod 211 forms a transmission structure with a transmission slide 216 through a connecting rod 215. The number of driving motors 202 is one to four, and the force of the transmission belt 204 during transmission is greater than the downward force of the pressure member 214. A support bracket 8 is fixed to the bottom surface of the test frame 1, and a tray is placed inside the support bracket 8; The specific operation is as follows: the pallet is placed inside the top surface of the support bracket 8, and the hydraulic cylinder 3 is extended first to make the pressure head 4 drop vertically to apply pressure to the front part of the pallet until the pressure value reaches the standard and the pallet is not deformed, and then the pressure head 4 rises to reduce the pressure without leaving the front of the pallet. At this time, the pressure head 4 only stabilizes the pallet, and after the pallet is placed inside the support bracket 8, the pressure member 214 is pressed against any point on the edge of the pallet, and a weight with a preset gravity is added to the weight plate 213. The weight of the weight applies vertical pressure to the pressure member 214 to apply pressure to the edge of the pallet. The final applied pressure can be adjusted by adjusting the weight of the weight until the pressure reaches the preset value. At this time, if there is no damage on the edge of the pallet, the next step of operation is performed; The driving motor 202 drives the driving wheel 203 so that the transmission belt 204 carries the splicing teeth 206 and the transmission slide 216 for transmission. The transmission slide 216 contacts the bottom end of the linkage rod 215 first, and the linkage rod 215 is lifted up by the trapezoidal structure at the bottom of the transmission slide 216. Since the force of the transmission belt 204 during transmission is greater than the downward force of the pressure member 214, the linkage rod 215 carries the piston rod 211 to lift up. At this time, the transmission fluid in the upper space of the middle disc of the piston rod 211 enters the lower space of the middle disc through the connecting pipe 212, and the pressure member 214 is lifted up. The total length of a set of splice teeth 206 can be pre-adjusted. After the pressure member 214 is lifted, the splice teeth 206 will closely follow the transmission slide 216 to engage the transmission gear 207 at the back to make it rotate. The transmission gear 207 rotates through the conical tooth group at the bottom to drive the pulley at the bottom of the pulley 208 to rotate, so that the pulley 208 slides along the inside of the slide groove 209 for a distance. The distance is related to the total length of each set of splice teeth 206. As the transmission splice teeth 206 of the transmission belt 204 and the transmission gear 207 rotate, the transmission belt 204 rotates. Separated, and the linkage rod 215 is separated from the transmission slide 216 and reset and descended. At this time, the piston rod 211 descends under the action of the weight. When the piston rod 211 descends, the transmission fluid in the lower space of the middle disc enters the upper space of the middle disc through the connecting pipe 212, so that the piston rod 211 gradually descends and applies pressure, thereby performing a pressure test on another part of the edge of the tray. Therefore, the splicing tooth 206 can perform a pressure test on a part of the edge of the tray every time it is transmitted for one circle, until the pressure member 214 completes a circle around the tray; Based on the above description, the transmission belt 204 is driven by the driving motor 202, so that the transmission slide 216 preferentially lifts the connecting rod 215 to make the pressure piece 214 rise, and closely follows the splicing tooth 206 to mesh with the transmission gear 207 to make it rotate, so that the pressure piece 214 shifts to the next test area, and the pressure strength of the pressure piece 214 is adjusted by the weight of the weight, and when the pressure piece 214 descends, pressure is gradually applied by the flow of the transmission fluid to prevent the edge of the tray from being suddenly stressed and damaged, and as the transmission belt 204 cycles the above operation, the pressure piece 214 circles the tray to perform an automated continuous compression test on different parts of its edge, and the total length can be adjusted by plugging and unplugging the splicing tooth 206, thereby adjusting the distance of each displacement of the pressure piece 214, and the pressure strength can be adjusted by adjusting the weight of the weight, thereby increasing the scope of application.

[0022] like Figure 1-Figure 6 As shown, a penetration plate 5 is fixed to the inner side of the pulley 208, and a limiting assembly 6 is penetrated inside the penetration plate 5, the limiting assembly 6 includes a penetration rod 601 and a trapezoidal force block 602, the bottom of the penetration rod 601 is fixed with a trapezoidal force block 602, the limiting assembly 6 also includes a limiting clamping column 603, the bottom of the trapezoidal force block 602 is fixed with a limiting clamping column 603, and a tooth groove 7 is opened on the surface of the suspended plate 201 below the trapezoidal force block 602, and the tooth groove 7 is engaged and connected with the limiting clamping column 603; The specific operation is as follows: the transmission slide 216 first contacts the connecting rod 215 during transmission, and before the splicing tooth 206 and the transmission gear 207 are meshed, the transmission slide 216 first contacts the trapezoidal force block 602 through transmission, and the trapezoidal force block 602 is forced to lift up by the transmission slide 216, so that the limit clamping column 603 is separated from the tooth groove 7, so that when the splicing tooth 206 and the transmission gear 207 are meshed and transmitted, the pulley 208 can slide along the inside of the slide groove 209, and the splicing tooth 206 and the transmission gear 207 are meshed and transmitted. After the moving gear 207 is separated, the transmission slide 216 is also separated from the trapezoidal force block 602. At this time, the trapezoidal force block 602 naturally descends and resets, so that the limit clamping column 603 re-engages with the tooth groove 7, thereby limiting the pulley 208 after each movement to prevent the pressure-applying member 214 from moving when it descends for the compression test, causing deviation in the test part. When the transmission slide 216 contacts the trapezoidal force block 602, the transmission slide 216 and the limit clamping column 603 are misaligned with each other, so the two do not contact each other.

[0023] In summary, when the pallet compression test device is used, the pallet is first placed inside the support bracket 8, at which time the hydraulic cylinder 3 is first extended to make the pressure head 4 drop vertically to apply pressure to the front part of the pallet until the pressure value reaches the standard and the pallet is not deformed, and then the pressure head 4 rises to reduce the pressure without leaving the front part of the pallet. At this time, the pressure head 4 only stabilizes the pallet, and after the pallet is placed inside the support bracket 8, the pressure member 214 is pressed against any point on the edge of the pallet, and a weight with a preset gravity is added to the weight plate 213. The weight of the weight applies vertical pressure to the pressure member 214 to apply pressure to the edge of the pallet, and the final applied pressure can be adjusted by adjusting the weight of the weight until the pressure reaches the preset value. At this time, if there is no damage at the edge of the pallet, the next step of operation is performed; The driving motor 202 drives the driving wheel 203 so that the transmission belt 204 carries the splicing teeth 206 and the transmission slide 216 for transmission. The transmission slide 216 contacts the bottom end of the linkage rod 215 first, and the linkage rod 215 is lifted up by the trapezoidal structure at the bottom of the transmission slide 216. Since the force of the transmission belt 204 during transmission is greater than the downward force of the pressure member 214, the linkage rod 215 carries the piston rod 211 to lift up. At this time, the transmission fluid in the upper space of the middle disc of the piston rod 211 enters the lower space of the middle disc through the connecting pipe 212, and the pressure member 214 is lifted up. The total length of a set of splice teeth 206 can be pre-adjusted. After the pressure member 214 is lifted, the splice teeth 206 will closely follow the transmission slide 216 to engage the transmission gear 207 at the back to make it rotate. The transmission gear 207 rotates through the conical tooth group at the bottom to drive the pulley at the bottom of the pulley 208 to rotate, so that the pulley 208 slides along the inside of the slide groove 209 for a distance. The distance is related to the total length of each set of splice teeth 206. As the transmission splice teeth 206 of the transmission belt 204 and the transmission gear 207 rotate, the transmission belt 204 rotates. Separated, and the linkage rod 215 is separated from the transmission slide 216 and reset and descended. At this time, the piston rod 211 descends under the action of the weight. When the piston rod 211 descends, the transmission fluid in the lower space of the middle disc enters the upper space of the middle disc through the connecting pipe 212, so that the piston rod 211 gradually descends and applies pressure, thereby performing a pressure test on another part of the edge of the tray. Therefore, the splicing tooth 206 can perform a pressure test on a part of the edge of the tray every time it is transmitted for one circle, until the pressure member 214 completes a circle around the tray; When the transmission slide 216 is transmitting, it first contacts the connecting rod 215, and before the splicing tooth 206 is meshed with the transmission gear 207, the transmission slide 216 first contacts the trapezoidal force block 602 through transmission. The trapezoidal force block 602 is forced to lift up through the transmission of the transmission slide 216, so that the limiting clamping column 603 is separated from the tooth groove 7. Therefore, when the splicing tooth 206 and the transmission gear 207 are subsequently meshed and transmitted, the pulley 208 is able to slide along the inside of the slide groove 209, and after the splicing tooth 206 and the transmission gear 207 are separated, the transmission slide 216 is also separated from the trapezoidal force block 602. At this time, the trapezoidal force block 602 naturally drops and resets, so that the limiting clamping column 603 is re-engaged with the tooth groove 7, thereby limiting the pulley 208 after each movement.

[0024] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A compressive test device for a pallet, comprising a test frame (1) and an edge compressive test assembly (2), characterized in that: The top of the inner wall of the test frame (1) is connected to an edge compression test assembly (2) via a support. The edge compression test assembly (2) comprises a suspended plate (201), a drive motor (202), a drive wheel (203), a transmission belt (204), a magnetic adsorption groove (205), a splice tooth (206), a transmission gear (207), a pulley (208), a slide groove (209), a hydraulic cylinder (210), a piston rod (211), a connecting pipe (212), a weight plate (213), a pressure member (214), a linkage rod (215) and a transmission slide member (216). The surface of the suspended plate (201) is rotatably connected to the drive wheel (203), the top of any of the drive wheels (203) is connected to the drive motor (202), the outer wall of the drive wheel (203) is sleeved with a drive belt (204), and the outer side surface of the drive belt (204) is provided with magnetic adsorption grooves (205) at equal intervals. A splicing tooth (206) is inserted into the interior of the magnetic adsorption groove (205); a sliding groove (209) is provided on the surface of the suspended plate (201); a pulley (208) is slidably connected to the interior of the sliding groove (209); a transmission gear (207) is provided on the top of the pulley (208); a hydraulic cylinder (210) is fixed to the outer side of the pulley (208) via a bracket; a piston rod (211) is passed through the interior of the hydraulic cylinder (210); a connecting pipe (212) is connected to the upper and lower parts of the side of the hydraulic cylinder (210); a weight plate (213) is provided on the top of the piston rod (211); a pressure member (214) is fixed to the bottom of the piston rod (211); a linkage rod (215) is connected to the surface of the middle disc of the piston rod (211); a transmission slide (216) is connected to the bottom of the outer side of the transmission belt (204); and a movable ball is embedded in the surface of the transmission slide (216).

2. A compressive testing device for a pallet according to claim 1, characterized in that: The transmission gear (207) is transmission-connected to the transmission belt (204) via the splicing teeth (206), and the transmission sliding member (216) is located between the transmission gear (207) and the splicing teeth (206).

3. A compressive testing device for a pallet according to claim 1, characterized in that: A hydraulic cylinder (3) is fixed to the middle of the top surface of the test frame (1), and a pressure head (4) is fixed to the bottom end of the hydraulic cylinder (3) while passing through the suspended plate (201).

4. A compressive testing device for a pallet according to claim 1, characterized in that: The upper space of the middle disc of the piston rod (211) inside the hydraulic cylinder (210) is connected to the lower space of the middle disc via a connecting pipe (212), and the middle disc of the piston rod (211) forms a transmission structure via a connecting rod (215) and a transmission slide (216).

5. The compression test device for a pallet according to claim 1, characterized in that: The number of the driving motors (202) is one to four, and the force applied by the transmission belt (204) during transmission is greater than the downward force applied by the pressure member (214).

6. The compression test device for a pallet according to claim 1, characterized in that: A penetration plate (5) is fixed to the inner side surface of the pulley (208), and a limiting component (6) is penetrated inside the penetration plate (5).

7. A compressive testing device for a pallet according to claim 6, characterized in that: The limiting assembly (6) comprises a penetration rod (601) and a trapezoidal force-bearing block (602), and the bottom of the penetration rod (601) is fixed with the trapezoidal force-bearing block (602).

8. The compression test device for a pallet according to claim 7, characterized in that: The limiting assembly (6) further comprises a limiting clamping column (603), and the limiting clamping column (603) is fixed to the bottom of the trapezoidal force-bearing block (602).

9. A compression test device for a pallet according to claim 8, characterized in that: A tooth groove (7) is provided on the surface of the suspended plate (201) below the trapezoidal force-bearing block (602), and the tooth groove (7) is engaged and connected with the limiting clamping column (603).

10. The compression test device for a pallet according to claim 1, characterized in that: A support bracket (8) is fixed to the bottom surface of the test frame (1), and a tray is placed inside the support bracket (8).

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