A power distribution box strength testing device

Abstract

This invention relates to the field of distribution box testing technology, specifically a distribution box strength testing device. The invention includes a disc and two side frames fixed to the bottom of the disc. A material passage is formed through the center of the disc. A detection mechanism for multi-directional detection of the target distribution box is provided on the outer side of the disc. A clamping mechanism for clamping and positioning the target distribution box is provided between the side frames. The clamping mechanism consists of a clamping part and a lifting part for driving the target distribution box to move up and down. The detection mechanism includes a ring disc. A limiting mechanism for lifting and limiting the ring disc is provided between the side frames and the disc. The detection component of the detection mechanism is mounted on the top of the ring disc. A driving part for driving the ring disc to rotate is also provided between the two side frames. This invention can not only perform multi-directional impact testing on the target distribution box, but also use clamping + negative pressure suction to clamp and fix the bottom of the target distribution box, improving the stability of the impact test.

Description

Technical Field

[0001] This invention relates to the field of distribution box testing technology, specifically a distribution box strength testing device. Background Technology

[0002] A distribution box is a low-voltage power distribution device that assembles switching equipment, measuring instruments, protective electrical appliances, and auxiliary equipment in a closed or semi-closed metal cabinet or panel according to electrical wiring requirements. It is one of the core devices for power distribution. During the production process of distribution boxes, strength testing is generally required.

[0003] The prior art discloses Chinese Patent No. CN 113504137 B: a pendulum impact testing device, which discloses a rotating shaft with a hammer head installed, a driving mechanism for driving the rotating shaft to rotate, and a separation mechanism for allowing the rotating shaft to rotate freely. The driving mechanism drives the rotating shaft to rotate, the rotating shaft drives the connecting rod to move, and then the connecting rod drives the hammer head to swing to a certain height. After that, the separation mechanism can disengage the rotating shaft from the driving mechanism and allow the rotating shaft to rotate freely. Then, the hammer head will impact the sample due to gravity.

[0004] However, the aforementioned existing technology still has certain drawbacks. In use, when the workpiece to be tested remains stationary, the hammer head can only perform impact testing on a fixed position, and it cannot achieve multi-point strength testing of the target workpiece. Summary of the Invention

[0005] The purpose of this invention is to provide a power distribution box strength testing device to solve the problems mentioned in the background art.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A distribution box strength testing device includes a disc and two side frames fixed to the bottom of the disc. A material passage is opened through the center of the disc. A detection mechanism for multi-directional detection of the target distribution box is provided on the outer side of the disc. A clamping mechanism for clamping and positioning the target distribution box is provided between the side frames. The clamping mechanism consists of a clamping part and a lifting part for driving the target distribution box to move up and down.

[0008] The detection mechanism includes a ring disk, and a limiting mechanism for lifting and limiting the ring disk is provided between the side frame and the disk. The detection component of the detection mechanism is mounted on the top of the ring disk, and a driving part for driving the ring disk to rotate is also provided between the two side frames.

[0009] In a preferred embodiment, the detection component of the detection mechanism includes two U-shaped lugs fixed to the top of the ring disk. A gear disk I and a gear II for driving the gear disk I to deflect are rotatably installed inside each of the two U-shaped lugs. The gear II is driven to rotate by a servo motor installed on the outside of the corresponding U-shaped lug. A U-shaped frame is fixedly mounted between the two gear disks I.

[0010] A channel groove is provided on one side of the U-shaped frame at the position of the two U-shaped lugs. A rack is movably inserted inside the two channel grooves. A straight plate is fixed on the outside of the U-shaped frame. A gear driven by a servo motor is rotatably installed on the inside of the U-shaped frame at the position of the straight plate. The gear meshes with the corresponding rack. A swing power component and a pendulum component are installed between the two racks. The pendulum component is installed on the swing power component.

[0011] In a preferred embodiment, the swing power assembly includes ear plates fixed to the top of two racks, a secondary shaft rotatably mounted between the two racks, a main shaft rotatably mounted between the two ear plates, a limiting strip fixedly mounted on the outside of the main shaft, a sleeve movably sleeved on the outside of the main shaft, a gear disk II fixedly sleeved on the outside of the sleeve, an annular cylinder I movably sleeved on the outside of the secondary shaft, a gear III fixedly sleeved on the outside of the annular cylinder I, and a pendulum assembly fixedly mounted on one end of the annular cylinder I, with the gear disk II meshing with the gear III.

[0012] A ring block is rotatably mounted on the outer side of one end of the sleeve via a bearing. A cylinder is fixedly mounted on the outer side of one of the ear plates. The telescopic end of the cylinder is fixedly connected to the ring block. A cylinder is fixedly mounted on the outer side of one of the racks. A movable disk is movably sleeved on the outer side of the countershaft at the telescopic end of the cylinder. An annular guide groove is opened on the outer side of the ring cylinder. A limiting block that is slidably installed inside the annular guide groove is fixedly connected to one side of the movable disk.

[0013] In a preferred embodiment, the pendulum assembly includes a second ring cylinder fixedly sleeved on the outside of the first ring cylinder, an upper rod fixedly connected to the outside of the second ring cylinder, a lower rod provided at one end of the upper rod, a pendulum ball fixedly connected at one end of the lower rod, and a connecting piece provided between the upper rod and the lower rod.

[0014] The docking component includes circular plates that are fixedly connected to the opposite ends of the upper and lower rods respectively. Multiple straight rods are also provided through the two circular plates. Two limiting rings that are respectively attached to the corresponding circular plates are fixedly sleeved on the outer side of the end of each straight rod near the pendulum ball. A retaining ring is movably sleeved on the outer side of the other end of each straight rod, and a spring that is fixedly connected to the corresponding retaining ring and limiting ring is sleeved on the outer side of the straight rod.

[0015] The outer side of the circular plate connected to the upper end rod has four grooves corresponding to each straight rod. The four grooves are distributed in a cross shape, and two of them are aligned and penetrate the corresponding circular plate. Two locking blocks that are adapted to the grooves are fixed on the outer side of the end of the straight rod near the second ring cylinder.

[0016] In a preferred embodiment, a support frame is fixedly provided at the top of the U-shaped frame corresponding to the positions of the two racks, and a guide wheel is rotatably installed on the inner side of the top of the support frame. A wire loop is fixedly provided at both ends of the top of the two racks, and a rope belt wound on the corresponding guide wheel is fixedly connected between the two wire loops.

[0017] In a preferred embodiment, the limiting mechanism includes an annular groove formed on the outer side of the annular disc and L-shaped brackets fixed at both ends of the top of the two side frames. Each L-shaped bracket has a through-threaded locking rod on its vertical section. One end of each locking rod is fixedly provided with a knob, and the other end of the locking rod is movably inserted into the annular groove.

[0018] Each L-shaped bracket is fixedly provided with a limiting frame on its outer side. A guide plate is slidably connected inside the limiting frame. The locking rod moves through the corresponding guide plate, and two ring pieces are fixedly sleeved on the outer side of the locking rod, which respectively fit against the two sides of the corresponding guide plate.

[0019] In a preferred embodiment, the drive unit includes a mounting bracket fixed between two L-shaped supports. One side of the mounting bracket is provided with a gear five driven to rotate by a servo motor. A plurality of uniformly distributed toothed grooves are provided at the bottom of the ring disk corresponding to the position of the gear five, and the gear five meshes with the toothed grooves.

[0020] In a preferred embodiment, the lifting unit includes a cross groove and a motor groove located in the middle of the two side frames. A cross slide is slidably installed inside the cross groove, and two guide rods are rotatably installed inside the cross groove, passing through the corresponding cross slide. One of the guide rods has external threads on its outer side. The cross slide and the externally threaded guide rod are threadedly connected. The externally threaded guide rod is driven to rotate by a servo motor installed inside the motor groove.

[0021] In a preferred embodiment, the clamping part includes a cylinder three fixedly installed on the outside of the cross slide. A bracket is fixedly connected to the telescopic end of the cylinder three. The bracket is composed of an L-shaped plate and a horizontal plate. Inclined plates are fixedly provided on both sides of the L-shaped plate. Vertical plates are fixedly provided at the bottom of the horizontal plate and the L-shaped plate. A round rod is fixedly provided on one side of the vertical plate fixed at the bottom of the L-shaped plate. The round rod moves through the vertical plate at the corresponding position at the bottom of the horizontal plate. A connecting spring is sleeved on the outside of the round rod to fix the two vertical plates. An auxiliary fixing component is provided between the side frame and the corresponding bracket.

[0022] The auxiliary fixing assembly includes a U-shaped rod fixed to the inside of the side frame and a cover frame fixed to the bottom of the horizontal plate. A piston plate is slidably installed inside the cover frame. A cylinder that moves through the cover frame is fixedly connected to the bottom of the piston plate. A spring is fixedly connected between the piston plate and the inner wall of the cover frame. Pull rings are fixedly provided on the outside of both the L-shaped plate and the cylinder. A rope belt wrapped around the outside of the U-shaped rod is fixedly connected between two corresponding pull rings. A through hole communicating with the inside of the cover frame is also provided at the top of the horizontal plate.

[0023] In a preferred embodiment, a material transfer mechanism is also provided between the two side frames. The material transfer mechanism includes straight guide grooves opened on opposite sides of the two side frames and a tray plate slidably connected between the two straight guide grooves. Two sets of through grooves are opened on the top of the tray plate, two in each set. Four corner plates are fixedly provided on the top of the tray plate corresponding to the position of each set of through grooves. A rack is fixedly provided in the middle of the bottom of the tray plate.

[0024] The pallet is fixedly equipped with four casters at the bottom corners, and a shaft driven by a servo motor is rotatably mounted between the two side frames. A gear four that meshes with rack two is fixedly sleeved on the outside of the shaft.

[0025] The beneficial effects of this invention are:

[0026] 1. This invention uses a clamping mechanism to clamp the distribution box to be tested and send it into the test station. Then, the driving unit drives the ring disk that supports the test components to rotate, so as to achieve the purpose of multi-directional testing of the target distribution box. At the same time, it can also adjust the intensity of the impact test.

[0027] 2. This invention utilizes a connecting component to connect and install the lower end rod of the pendulum ball with the upper end rod of the connecting ring cylinder, making assembly and disassembly convenient and quick, and enabling rapid replacement of the test pendulum ball;

[0028] 3. In the process of using cylinder three to drive the two brackets to move in opposite directions, the present invention can not only use the inclined plates installed on both sides of the L-shaped plate to correct the position of the target distribution box inside the pre-placement cavity, but also make the cavity between the cover frame and the target distribution box into a negative pressure state, thereby using the negative pressure to firmly hold the bottom of the target distribution box, thus improving the stability of the impact test. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the overall structure of the present invention from a first-view perspective;

[0031] Figure 2 This is a schematic diagram of the overall structure of the invention from a second perspective;

[0032] Figure 3 This is a partial structural schematic diagram of the present invention;

[0033] Figure 4 This is a first-view structural diagram of the detection mechanism of the present invention;

[0034] Figure 5 This is a schematic diagram of the detection mechanism of the present invention from a second perspective;

[0035] Figure 6 This is a partial structural diagram of the pendulum assembly of the present invention;

[0036] Figure 7 This is the present invention. Figure 4 Enlarged schematic diagram of section A in the middle;

[0037] Figure 8 This is a schematic diagram of the material transfer mechanism of the present invention;

[0038] Figure 9 This is a partial structural diagram of the clamping mechanism of the present invention;

[0039] Figure 10 This is the present invention. Figure 9 Cross-sectional schematic diagram;

[0040] Figure 11 This is a schematic diagram of the structure of the distribution box to be tested according to the present invention;

[0041] Figure 12 This is a schematic diagram of the application scenario of the testing device of the present invention.

[0042] The attached diagram is labeled as follows: 1. Disc; 2. Side frame; 3. Detection mechanism; 31. Ring disc; 32. U-shaped lug; 33. U-shaped frame; 34. Gear 1; 35. Rack 1; 36. Gear disc 1; 37. Gear 2; 38. Swinging power assembly; 381. Main shaft; 382. Secondary shaft; 383. Limiting bar; 384. Sleeve; 385. Ring block; 386. Gear disc 2; 387. Ring cylinder 1; 388. Gear 3; 389. Moving disc; 3810. Limiting block; 3811. Cylinder 1; 3812. Cylinder 2; 39. Pendulum assembly; 391. Ring cylinder 2; 392. Upper rod; 393. Lower rod; 394. Pendulum ball; 395. Circular plate; 396. Straight rod; 397. Limiting ring; 398. Retaining ring; 399. Spring 1; 3 910. Locking block; 310. Support frame; 311. Wire ring; 312. Guide wheel; 313. Rope belt one; 4. Material transfer mechanism; 41. Support plate; 42. Through groove; 43. Angle plate; 44. Rack two; 45. Straight guide groove; 46. Shaft; 47. Gear four; 5. Restriction mechanism; 51. L-shaped support; 52. Locking rod; 53. Restriction frame; 54. Guide plate; 55. Ring groove; 6. Material passage groove; 7. Clamping mechanism; 71. Cross slide; 72. Cylinder three; 73. Bracket; 74. Inclined plate; 75. Guide rod; 76. Auxiliary fixing assembly; 761. U-shaped rod; 762. Cover frame; 763. Piston plate; 764. Spring two; 765. Cylindrical; 766. Pull ring; 767. Rope belt two; 8. Mounting bracket; 9. Gear five; 10. Gear groove. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] The testing device of the present invention belongs to the category of equipment for testing structural components, and is mainly used for multi-point impact resistance testing of the outer casing of a distribution box.

[0045] Example 1

[0046] Refer to the instruction manual appendix Figures 1-2 and Figures 11-12 The present invention provides a distribution box strength testing device, including a disc 1 and two side frames 2 fixed to the bottom of the disc 1. A material passage 6 is opened through the center of the disc 1. A testing mechanism 3 is provided on the outside of the disc 1 for multi-directional testing of the target distribution box (i.e. the distribution box to be tested, the same below). A clamping mechanism 7 is provided between the side frames 2 for clamping and positioning the target distribution box.

[0047] The detection mechanism 3 includes a ring disk 31. A limiting mechanism 5 for lifting and limiting the ring disk 31 is provided between the side frame 2 and the disk 1. The detection component of the detection mechanism 3 is mounted on the top of the ring disk 31. A driving part for driving the ring disk 31 to rotate is also provided between the two side frames 2.

[0048] It should be noted that the present invention uses the clamping mechanism 7 to clamp the distribution box to be tested and send it into the test station, and then uses the driving unit to drive the ring disk 31 that carries the test components to rotate, so as to achieve the purpose of multi-directional testing of the target distribution box.

[0049] Specifically, such as Figures 1-3 and Figure 8 As shown, a material transfer mechanism 4 is also provided between the two side frames 2. The material transfer mechanism 4 includes straight guide grooves 45 opened on opposite sides of the two side frames 2 and a support plate 41 slidably connected between the two straight guide grooves 45. The top of the support plate 41 is provided with two sets of through grooves 42, two in each set. At the position of each set of through grooves 42, four corner plates 43 for pre-limiting the target distribution box are fixedly provided on the top of the support plate 41. The pre-placement cavity formed by the four corner plates 43 is set in the middle between the two through grooves 42 in each set, and the size of the pre-placement cavity is larger than the size of the target distribution box (i.e., the length and width of the distribution box). A rack 44 is fixedly provided in the middle of the bottom of the support plate 41.

[0050] The pallet 41 is fixedly equipped with four casters at the bottom corners. A shaft 46 driven by a servo motor is rotatably mounted between the two side frames 2. A gear 47 that meshes with the rack 44 is fixedly sleeved on the outside of the shaft 46. The casters can be used to reduce the friction force on the pallet 41 when switching positions. At the same time, the straight guide groove 45 and the shaft 46 are used to limit the movement of the pallet 41. That is, when the caster away from the direction of travel of the pallet 41 contacts the outside of the shaft 46, the target distribution box just enters the material picking position corresponding to the clamping mechanism 7.

[0051] Furthermore, a through groove is provided between two corresponding through grooves 42 extending along the straight guide groove 45 on the pallet 41, and a U-shaped connecting frame is fixed between the two sides of each through groove at the bottom of the pallet 41, wherein the horizontal plane of the outer bottom surface of the U-shaped connecting frame is higher than the horizontal plane of the shaft 46.

[0052] It should be noted that during the testing of the target distribution box, first place the target distribution box inside the pre-placement cavity surrounded by the four corner plates 43 at the top of the pallet 41. Then, drive the shaft rod 46 to rotate through the corresponding servo motor, and use the fourth gear 47 that rotates synchronously with the shaft rod 46 to drive the pallet 41 to translate along the straight guide groove 45. When the target distribution box placed inside one of the pre-placement cavities enters the feeding station corresponding to the clamping mechanism 7, use the clamping mechanism 7 to clamp the distribution box to be tested and send it to the testing station. After the testing is completed, use the rotating fourth gear 47 to drive the target distribution box inside another pre-placement cavity into the feeding station. In this way, the replacement and feeding of materials can be carried out synchronously.

[0053] Specifically, as Figures 2-4 shown, the limiting mechanism 5 includes an annular groove 55 opened on the outer side of the annular disc 31 and L-shaped brackets 51 fixed at both ends of the top of the two side frames 2. The horizontal plane on the inner side of the L-shaped bracket 51 is coplanar with the lower end surface of the annular disc 31. A clamping rod 52 is threadedly sleeved through the vertical section of each L-shaped bracket 51 in a penetrating manner. A knob is fixedly provided at one end of each clamping rod 52, and the other end of the clamping rod 52 is movably inserted into the annular groove 55. The outer side of the end of the clamping rod 52 extending into the annular groove 55 is smooth to reduce the resistance during the rotation of the annular disc 31.

[0054] A limiting frame 53 is fixedly provided on the outer side of each L-shaped bracket 51. A guiding plate 54 with a "plus-minus" structure is slidably connected inside the limiting frame 53. The clamping rod 52 movably penetrates through the corresponding guiding plate 54, and two annular pieces that are respectively in contact with both sides of the corresponding guiding plate 54 are fixedly sleeved on the outer side of the clamping rod 52. Among them, the length of the clamping rod 52 is greater than the length of the inner cavity of the limiting frame 53, so that the clamping rod 52 will never be separated from the corresponding L-shaped bracket 51 during the movement, and when the guiding plate 54 moves to the position at the end of the limiting frame 53 far from the corresponding L-shaped bracket 51, the end of the clamping rod 52 just completely disengages from the annular groove 55.

[0055] It should be noted that during the installation of the detection mechanism 3, by turning the knob, the corresponding clamping rod 52 moves in the direction away from the disc 1 to the maximum position. At this time, the annular disc 31 is sleeved on the outer side of the disc 1, and the annular disc 31 is supported by the four L-shaped brackets 51 evenly distributed in a cross shape. Then, turn the knob to insert the end of the corresponding clamping rod 52 close to the disc 1 into the annular groove 55 on the annular disc 31, so as to quickly clamp and limit the annular disc 31. The design of this limiting mechanism 5 can facilitate the quick disassembly and assembly of the annular disc 31 carrying the detection components.

[0056] Specifically, as Figures 2-3As shown, the drive unit includes a mounting bracket 8 fixed between two L-shaped brackets 51. A gear 9 driven by a servo motor is provided on one side of the mounting bracket 8. A plurality of uniformly distributed tooth grooves 10 are provided at the bottom of the ring disk 31 corresponding to the position of the gear 9. The gear 9 meshes with the tooth grooves 10.

[0057] It should be noted that during the testing of the target distribution box using the detection component, the corresponding servo motor can drive the gear 9 to rotate, and the rotating gear 9 can drive the ring disk 31 to perform transmission, thereby driving the detection component installed on the ring disk 31 to perform strength tests on different positions of the horizontal circumferential side of the target distribution box.

[0058] Specifically, such as Figures 4-5 As shown, the detection components of the detection mechanism 3 include two U-shaped lugs 32 fixed on the top of the ring disk 31. A gear disk 36 and a gear 37 for driving the gear disk 36 to deflect are rotatably installed inside each of the two U-shaped lugs 32. The gear 37 is driven to rotate by a servo motor installed on the outside of the corresponding U-shaped lug 32. A U-shaped frame 33 is fixedly mounted between the two gear disks 36. Each of the two gear disks 36 includes a smooth surface area and a tooth area. The U-shaped frame 33 is mounted on the smooth surface area of ​​the two gear disks 36.

[0059] A channel groove is provided on one side of the U-shaped frame 33 at the position of the two U-shaped lugs 32. A rack 35 is movably inserted inside the two channel grooves. A straight plate is fixed on the outside of the U-shaped frame 33. A gear 34 driven by a servo motor is rotatably installed on the inside of the U-shaped frame 33 at the position of the straight plate. The gear 34 meshes with the corresponding rack 35. A slot is opened in the middle of both sides of the U-shaped frame 33. The channel groove is connected to the corresponding slot on the U-shaped frame 33. The gear 34 is installed inside the corresponding slot. A swing power component 38 and a pendulum component 39 are installed between the two racks 35. The pendulum component 39 is installed on the swing power component 38.

[0060] It should be noted that during the testing of the target distribution box using the detection components, if a strength test is required on the upper part of the target distribution box, the corresponding servo motor needs to be controlled to drive the gear 37 to generate transmission, and the rotating gear 37 drives the gear disk 36 to swing at a certain angle, so that the hammer head of the pendulum assembly 39 (i.e., the pendulum ball 394 below) impacts the top of the target distribution box. Then, the swing power component 38 can be used to drive the pendulum assembly 39 to complete the impact test on the upper part of the target distribution box. This design uses the swing of the U-shaped frame 33 and the circumferential rotation of the ring disk 31 to cooperate to achieve multi-point testing of the horizontal circumferential side and top of the target distribution box.

[0061] In addition, during the testing of the target distribution box using the detection components, the corresponding servo motor can be used to drive the gear 34 to rotate, and the rotating gear 34 can be used to drive the rack 35 to move horizontally, so as to help to control the impact point and impact intensity of the pendulum assembly 39.

[0062] Specifically, such as Figures 4-5 and Figure 7 As shown, the oscillating power assembly 38 includes ear plates fixed to the top of two racks 35. A secondary shaft 382 is rotatably mounted between the two racks 35, and a main shaft 381 is rotatably mounted between the two ear plates. A limiting strip 383 is fixedly mounted on the outside of the main shaft 381. A sleeve 384 is movably sleeved on the outside of the main shaft 381. A gear disk 386 is fixedly sleeved on the outside of the sleeve 384. An annular cylinder 387 is movably sleeved on the outside of the secondary shaft 382. A gear 388 is fixedly sleeved on the outside of the annular cylinder 387. The pendulum assembly 39 is fixedly mounted on one end of the annular cylinder 387. The gear disk 386 meshes with the gear 388. Multiple gear disks 386 are equidistantly arranged. Each gear disk 386 is also composed of a smooth area and a tooth area, and the proportion of the tooth area from left to right (see reference). Figure 5 ) increases sequentially;

[0063] A ring block 385 is rotatably mounted on the outer side of one end of the sleeve 384 via a bearing. A cylinder 3811 is fixedly mounted on the outer side of one of the lugs. The telescopic end of cylinder 3811 is fixedly connected to the ring block 385. The relative position of the sleeve 384 on the main shaft 381 can be controlled by the telescopic movement of cylinder 3811, thus switching the gear disc 386 meshing with gear 388 without affecting the rotation of the main shaft 381. A cylinder 3812 is fixedly mounted on the outer side of one of the racks 35. The telescopic end of cylinder 3812... A movable disk 389 is fixedly connected to the outer side of the countershaft 382. An annular guide groove is provided on the outer side of the ring cylinder 387. A limiting block 3810 is fixedly connected to one side of the movable disk 389 and slidably installed inside the annular guide groove. The movable disk 389 consists of an annular bar movably fitted on the outer side of the countershaft 382 and a connecting rod that is fixedly connected to the limiting block 3810. This allows for adjustment of the relative position of gear 388 on the countershaft 382. It should be noted that gear 388 always remains directly opposite one of the gear disks 386.

[0064] It should be noted that when the pendulum assembly 39 is driven by the swing power assembly 38 to impact the target distribution box, the ring disk 31 is first driven to rotate by the rotating gear 9 so that the pendulum assembly 39 is aligned with one side of the target distribution box. Then, the positions of the sleeve 384 and the ring cylinder 387 on the main shaft 381 and the secondary shaft 382 are adjusted synchronously to make the pendulum assembly 39 face the test point. Then, the impact intensity of the pendulum assembly 39 is adjusted by adjusting the alignment of the different gear disks 386 and the gear 388. During this process, the height of the target distribution box can be adjusted by controlling the clamping mechanism 7 to switch the longitudinal test point on the circumferential side of the target distribution box.

[0065] Once the adjustment is complete, simply control the corresponding servo motor to drive the spindle 381 to rotate, thereby causing the second gear 386 to rotate synchronously. During this process, when the toothed area on the surface of the rotating second gear 386 meshes with the third gear 388, the rotation of the second gear 386 will drive the third gear 388 to rotate in the opposite direction, causing the pendulum assembly 39 to move away from the target distribution box. When the smooth surface area of ​​the second gear 386 rotates to correspond with the third gear 388, the third gear 388 just breaks free from the constraint of the second gear 386, causing the pendulum assembly 39 to reset under the action of gravity after swinging. The reset hammer head then strikes the test point on the surface of the target distribution box to complete the impact test. This impact test can be a single impact or multiple consecutive impacts, depending on the test requirements.

[0066] Specifically, such as Figures 4-7 As shown, the pendulum assembly 39 includes a second ring 391 fixedly sleeved on the outside of the first ring 387. An upper rod 392 is fixedly connected to the outside of the second ring 391. A lower rod 393 is provided at one end of the upper rod 392. A pendulum ball 394 is fixedly connected at one end of the lower rod 393. A connecting piece is provided between the upper rod 392 and the lower rod 393.

[0067] The connecting component includes circular plates 395 fixedly connected to the opposite ends of the upper rod 392 and the lower rod 393 respectively. A plurality of straight rods 396 are also provided through the two circular plates 395. Two limiting rings 397 are fixedly sleeved on the outer side of the end of each straight rod 396 near the pendulum ball 394, which respectively fit against the corresponding circular plates 395. The setting of the limiting rings 397 can prevent the circular plate 395 at the end of the lower rod 393 from sliding axially along the straight rod 396 during the impact process, so as to ensure that the impact test landing point will not be deviated. A retaining ring 398 is movably sleeved on the outer side of the other end of each straight rod 396, and a spring 399 is sleeved on the outer side of the straight rod 396 to fix the corresponding retaining ring 398 and the limiting ring 397.

[0068] The outer side of the circular plate 395 connected to the upper rod 392 has four grooves corresponding to each straight rod 396. The four grooves are arranged in a cross shape, with two grooves aligned to each other and penetrating the corresponding circular plate 395. Two locking blocks 3910, adapted to the grooves, are fixed to the outer side of the straight rod 396 near the second ring cylinder 391, and the two locking blocks 3910 are collinear. When the pendulum assembly 39 is in the position shown... Figure 6 In the state shown, the two locking blocks 3910 are respectively locked inside the two recesses that do not penetrate the corresponding circular plates 395, and the spring 399 is in a compressed state at this time.

[0069] It should be noted that during the testing of the target distribution box using the detection components, if the impact intensity altered by the above adjustments does not meet the impact test requirements, the pendulum ball 394 can be pushed towards the upper rod 392, causing the locking block 3910 to disengage from the corresponding slot that does not penetrate the circular plate 395. At the same time, the spring 399 is compressed. After the locking block 3910 is completely disengaged from the corresponding slot, the straight rod 396 is rotated 90° to switch the locking block 3910 to the slot that penetrates the circular plate 395. Then, the force on the pendulum ball 394 is removed, allowing the locking block 3910 to pass through the slot of the circular plate 395 under the action of the spring 399, completely separating the pendulum ball 394. Then, a new pendulum ball 394 can be installed. The disassembly and assembly are convenient and quick.

[0070] Specifically, such as Figure 4 As shown, a support frame 310 is fixedly provided at the top of the U-shaped frame 33 at the position corresponding to the two racks 35. A guide wheel 312 is rotatably installed on the inner side of the top of the support frame 310. A wire loop 311 is fixedly provided at both ends of the top of the two racks 35. A rope belt 313 is fixedly connected between the two wire loops 311 and wound on the corresponding guide wheel 312. In order to prevent the rope belt 313 from detaching from the guide wheel 312, the outer circumferential surface of the guide wheel 312 can be designed as a concave arc surface to improve the sliding stability of the rope belt 313 during the translation of the racks 35.

[0071] It should be noted that during the process of moving the rack 35 along the channel groove to adjust the pendulum assembly 39, the rope 313 wrapped around the guide wheel 312 can be used to pull the two ends of the corresponding rack 35, which can prevent the pendulum assembly 39 from moving too far away from the U-shaped frame 33 and causing the rack 35 to break due to heavy load.

[0072] Example 2

[0073] Refer to the instruction manual appendix Figure 1 and Figures 8-9The present invention also provides a distribution box strength testing device. The clamping mechanism 7 consists of a clamping part and a lifting part for driving the target distribution box to rise and fall. The lifting part includes a cross groove and a motor groove opened in the middle of the two side frames 2. A cross slide 71 is slidably installed inside the cross groove, and two guide rods 75 are rotatably installed inside the cross groove and pass through the corresponding cross slide 71. One of the guide rods 75 has external threads on its outer side. The cross slide 71 and the guide rod 75 with external threads are threaded together. The guide rod 75 with external threads is driven to rotate by a servo motor installed inside the motor groove.

[0074] The clamping part includes a cylinder 3 72 fixedly installed on the outside of the cross slide 71. The telescopic end of the cylinder 3 72 is fixedly connected to a bracket 73. The bracket 73 is composed of an L-shaped plate and a horizontal plate. Both sides of the L-shaped plate are fixedly provided with inclined plates 74 for adjusting the position of the target distribution box. The bottom of the horizontal plate and the L-shaped plate are both fixedly provided with vertical plates. A round rod is fixedly provided on one side of the vertical plate fixed at the bottom of the L-shaped plate. The round rod moves through the vertical plate at the corresponding position at the bottom of the horizontal plate. A connecting spring is sleeved on the outside of the round rod to fix the two vertical plates. The end of the round rod away from the corresponding cross slide 71 always remains in the state of passing through the vertical plate at the corresponding position at the bottom of the horizontal plate. An auxiliary fixing component 76 is provided between the side frame 2 and the corresponding bracket 73.

[0075] It should be noted that when the clamping mechanism 7 is in the initial state, the distance between the opposite ends of the two brackets 73 is at its maximum. The connecting spring is in its natural state, and the projection of the bracket 73 in the vertical direction is in the area where it sits inside the corresponding slot 42. During the clamping and lifting of the target distribution box, the guide rod 75 with external threads is driven to rotate by the corresponding servo motor, so that the cross slide 71 moves down along the cross groove until the horizontal section of the bracket 73 is completely sunk into the corresponding slot 42. This ensures that after the target distribution box is placed in the corresponding cavity, the horizontal section of the bracket 73 is at the bottom of the target distribution box.

[0076] Once the target electrical distribution box is in the material handling station, the two cylinders 72 will simultaneously push the two brackets 73 to move towards each other. The inclined plates 74 installed on both sides of the L-shaped plate will be used to correct the position of the target electrical distribution box inside the pre-placement cavity, so that the target electrical distribution box is in the center position of the corresponding material passage 6. At the same time, the target electrical distribution box will be clamped and tightened. During this process, when the two brackets 73 move towards each other, the auxiliary fixing component 76 will be driven to perform corresponding actions to improve the clamping stability of the target electrical distribution box.

[0077] In addition, during the switching of the target electrical distribution box between the material picking station and the material changing station, the through slot can prevent the vertical section on the bracket 73 from affecting the left and right translational movement of the tray 41.

[0078] Specifically, such as Figures 9-10 As shown, the auxiliary fixing component 76 includes a U-shaped rod 761 fixed inside the side frame 2 and a cover frame 762 fixed to the bottom of the horizontal plate. A piston plate 763 is slidably installed inside the cover frame 762. A cylinder 765 that moves through the cover frame 762 is fixedly connected to the bottom of the piston plate 763. A spring 764 is fixedly connected between the piston plate 763 and the inner wall of the cover frame 762. Pull rings 766 are fixedly provided on the outer sides of the L-shaped plate and the cylinder 765. A rope 767 wrapped around the outer side of the U-shaped rod 761 is fixedly connected between two corresponding pull rings 766. A through hole communicating with the inside of the cover frame 762 is also provided at the top of the horizontal plate.

[0079] It should be noted that during the process of using the auxiliary fixing component 76 to assist in clamping the target distribution box, after the target distribution box is placed inside the pre-placement cavity, the bottom surface of the target distribution box will block the through hole on the horizontal plate. This allows the two brackets 73 to move towards each other during the process, as the length of the second rope 767 is constant, allowing the second rope 767 to gradually pull the cylinder 765, initially in a lowered position under the constraint of the U-shaped rod 761, towards the desired position. Figure 10 As shown, during this process, because the through hole above the horizontal plate is blocked, the cylinder 765 is gradually pulled out of the cover frame 762, which simultaneously pulls the piston plate 763 downward and compresses the second spring 764, making the cavity between the cover frame 762 and the target distribution box a negative pressure state. This negative pressure is used to firmly hold the bottom of the target distribution box in place, preventing the target distribution box from dislodging during the impact test.

[0080] In the above technical solution, the cylinder mentioned is a single-acting cylinder of model DSA25N200; the servo motor mentioned is a servo driver of model JSMA-PUC02D.

[0081] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A device for testing the strength of an electrical distribution box, comprising a circular disc and two side frames fixed to the bottom of the disc, characterized in that: The center of the disc is provided with a through slot, the outer side of the disc is provided with a detection mechanism for multi-directional detection of the target distribution box, two side frames are provided with a clamping mechanism for clamping and positioning the target distribution box, and the clamping mechanism is composed of a clamping part and a lifting part for driving the target distribution box to lift; The detection mechanism comprises a ring disc, a limiting mechanism is arranged between the side frame and the disc for lifting and limiting the ring disc, the detection component of the detection mechanism is arranged on the top of the ring disc, and a driving part is arranged between the two side frames for driving the ring disc to rotate; The detection component of the detection mechanism comprises two U-shaped ear seats fixed on the top of the ring disc, respectively, a gear wheel two is rotatably installed in each U-shaped ear seat, and a gear wheel two is rotatably installed in each U-shaped ear seat. The lifting part comprises a cross slot and a motor slot, a cross slot and a motor slot are arranged in the middle of each side frame, a cross slide is slidably installed in the cross slot, and two guide rods are rotatably installed in the cross slot and pass through the corresponding cross slide, one of the guide rods is externally threaded, the cross slide is threadedly connected with the externally threaded guide rod, and the externally threaded guide rod is driven to rotate by a servo motor installed in the motor slot. The clamping part comprises a cylinder three fixedly installed on the outer side of the cross slide, the telescopic end of the cylinder three is fixedly connected with a bracket, the bracket comprises an L-shaped plate and a horizontal plate, inclined plates are fixedly arranged on the two sides of the L-shaped plate, vertical plates are fixedly arranged on the bottom of the horizontal plate and the L-shaped plate, a round rod is fixedly arranged on the side of the vertical plate fixed on the bottom of the L-shaped plate, the round rod passes through the vertical plate at the corresponding position on the bottom of the horizontal plate, a connecting spring is sleeved on the outer side of the round rod and fixedly connected with the two vertical plates, and an auxiliary fixing assembly is arranged between the side frame and the corresponding bracket. The auxiliary fixing assembly comprises a U-shaped rod fixedly arranged on the inner side of the side frame and a cover frame fixedly arranged on the bottom of the horizontal plate, a piston plate is slidably installed in the cover frame, a cylinder is fixedly connected with the bottom of the piston plate and passes through the cover frame, a spring two is fixedly connected between the piston plate and the inner wall of the cover frame, pull rings are fixedly arranged on the outer sides of the L-shaped plate and the cylinder, a rope two is fixedly connected between the two pull rings arranged correspondingly and wound on the outer side of the U-shaped rod, and a through hole is arranged in the top of the horizontal plate and communicated with the inside of the cover frame.

2. A strength testing device for an electrical box according to claim 1, wherein: Two outer sides of the U-shaped frame are fixedly provided with straight plates, gear wheels one driven to rotate by servo motors are rotatably installed on the inner side of the U-shaped frame at positions corresponding to the straight plates, and the gear wheels one are engaged with the corresponding gear racks one.

3. A strength testing device for an electrical box according to claim 1, wherein: The swing power assembly comprises two ear plates fixed at the top of two racks respectively, a secondary shaft rotatably installed between the two racks, a main shaft rotatably installed between the two ear plates, a limiting strip fixed outside the main shaft, a sleeve movably sleeved outside the main shaft, a gear plate two fixedly sleeved outside the sleeve, a ring cylinder one movably sleeved outside the secondary shaft, a gear three fixedly sleeved outside the ring cylinder one, and a swing hammer assembly fixedly installed at one end of the ring cylinder one, wherein the gear plate two is engaged with the gear three. One end of the sleeve is rotatably installed with a ring block outside through a bearing, one of the ear plates is fixedly provided with a cylinder one outside, the extending end of the cylinder one is fixedly connected with the ring block, one of the racks is fixedly provided with a cylinder two outside, the extending end of the cylinder two is fixedly connected with a moving disc movably sleeved outside the secondary shaft, the ring cylinder one is provided with an annular guide groove outside, and the moving disc is fixedly connected with a limiting block slidably installed inside the annular guide groove.

4. A strength testing device for an electrical box according to claim 3, wherein: The swing hammer assembly comprises a ring cylinder two fixedly sleeved outside the ring cylinder one, an upper end rod fixedly connected with the ring cylinder two outside, a lower end rod provided at one end of the upper end rod, a swing ball fixedly connected with one end of the lower end rod, and a butt joint between the upper end rod and the lower end rod. The butt joint comprises two circular plates fixedly connected with opposite ends of the upper end rod and the lower end rod respectively, a plurality of straight rods movably penetrating between the two circular plates, two limiting rings fixedly sleeved outside one end of each straight rod and abutting against the corresponding circular plate, a stop ring movably sleeved outside the other end of each straight rod, and a spring one fixedly connected with the corresponding stop ring and limiting ring outside the straight rod. The circular plate connected with the upper end rod is provided with four sink grooves corresponding to each straight rod outside, the four sink grooves are distributed in a cross shape, two sink grooves arranged in a position are penetrated through the corresponding circular plate, the other two sink grooves are not penetrated through the corresponding circular plate, and two clamping blocks matched with the sink grooves are fixedly provided outside one end of the straight rod close to the ring cylinder two.

5. A strength testing device for an electrical box according to claim 1, wherein: The top of the U-shaped frame is fixedly provided with a supporting frame corresponding to the positions of the two racks, a wire guide wheel is rotatably installed at the inner side of the top end of the supporting frame, a wire ring is fixedly provided at the top of each rack, and a rope one is fixedly connected between the two wire rings and wound around the corresponding wire guide wheel.

6. A strength testing device for an electrical box according to claim 1, wherein: The limiting mechanism comprises an annular groove provided outside the ring disc and an L-shaped bracket fixed at the top of each side frame, a clamping rod is threadedly sleeved in a penetrating mode on the vertical section of each L-shaped bracket, a knob is fixedly provided at one end of each clamping rod, and the other end of the clamping rod is movably inserted into the annular groove. A limiting frame is fixedly provided outside each L-shaped bracket, a guide plate is slidably connected inside the limiting frame, the clamping rod movably penetrates through the corresponding guide plate, and two ring pieces abutting against the two sides of the corresponding guide plate are fixedly sleeved outside the clamping rod.

7. A strength testing device for an electrical box according to claim 6, wherein: The driving part comprises a mounting frame fixed between the two L-shaped brackets, a gear five rotatably driven by a servo motor is arranged on one side of the mounting frame, a plurality of annular and uniformly distributed tooth grooves are provided in the ring disc at positions corresponding to the gear five, and the gear five is engaged with the tooth grooves.

8. A strength testing device for an electrical box according to claim 1, wherein: Two said side frame between also is equipped with material moving mechanism, material moving mechanism includes respectively opening in two side frame opposite side straight guide groove and slidingly connected between two straight guide groove and the supporting plate, the supporting plate top is equipped with two groups of through slot, each group includes two through slots, the supporting plate top corresponding each group through slot position is equipped with four angle plate fixedly, the supporting plate bottom surface middle part is equipped with rack two fixedly; The supporting plate bottom four corner positions are all fixedly installed with the moving wheel, and the shaft rod driven to rotate by the servo motor is rotatably installed between the two side frames, the gear four engaged with the rack two is fixedly sleeved on the outer side of the shaft rod.

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