A production test device for a lightweight safety hook

Abstract

The present invention relates to the field of testing technologies, and specifically to a production testing device for lightweight safety hooks. The present invention includes a frame, at the bottom of which a driving motor I is fixedly installed. The output shaft end of the driving motor I movably penetrates through one end of the frame and is fixedly connected to a main bevel gear. At the top of the frame, a plurality of testing units are installed and evenly distributed in a ring shape around the axis of the main bevel gear. Each testing unit is provided with a protection mechanism, an adjustment part for adjusting the position state of the safety hook, and a discharge control component. The present invention can not only perform tensile resistance tests on multiple safety hook samples, but also perform tensile resistance performance tests on different types of safety hooks, achieving the purpose of multi-purpose use of one machine and improving the testing efficiency. At the same time, it can also perform leveling and deviation correction on the target safety hook, making the target safety hook in a corrected state for testing, and automatically tightening the unfastened lock arm sleeve, improving the testing accuracy and testing quality.

Description

Technical Field

[0001] The present invention relates to the technical field of testing, and specifically to a production testing device for a lightweight safety hook. Background Art

[0002] A safety hook (carabiner), also known as a "master lock", is the most commonly used connecting tool for connecting ropes, slings, and anchor points, equipment, etc., to ensure the firmness and stability of the connection, thereby avoiding accidental detachment and accidents, and is widely used in construction operations, fire rescue, outdoor sports, and high-altitude operations and other occasions.

[0003] The prior art discloses a Chinese patent with the publication number CN 107843419 B: a lock buckle tensile testing machine, and discloses an electric cylinder, a tensile head, and a workpiece fixture. Through three tensile gauges installed on the tensile head, comprehensive testing is carried out on different directions of the lock buckle clamped by the workpiece fixture to ensure the integrity of the lock buckle quality.

[0004] However, the above prior art still has certain defects, that is, during use, only a single lock buckle can be subjected to tensile testing each time, and during the testing process, it is also necessary to first clamp the target lock buckle before carrying out the tensile testing, and the operation is cumbersome. Summary of the Invention

[0005] The purpose of the present invention is to provide a production testing device for a lightweight safety hook to solve the problems raised in the above background art.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] A production testing device for a lightweight safety hook includes a frame. A driving motor one is fixedly installed at the bottom of the frame. The output shaft end of the driving motor one movably penetrates through one end of the frame and is fixedly connected to a main bevel gear. A plurality of testing units are installed on the top of the frame and are evenly distributed in a ring around the axis of the main bevel gear.

[0008] The testing unit includes a rear side frame and a front side frame fixed on the top of the frame. A rotating shaft is rotatably installed in a penetrating manner between the rear side frame and the front side frame. And at positions on both sides of the rotating shaft between the rear side frame and the front side frame, inclined guide rods are fixedly connected. One end of the rotating shaft close to the main bevel gear is fixedly connected to a secondary bevel gear meshing with the main bevel gear.

[0009] A moving expansion assembly and a testing part installed on the moving expansion assembly for testing the tensile strength of the safety hook are provided between the rear side frame and the front side frame.

[0010] In a preferred embodiment, the movable expansion assembly includes a thread provided on the outer side of the rotating shaft and located between the rear side frame and the front side frame. A main sliding seat is sleeved on the thread on the outer side of the rotating shaft. A secondary sliding seat is movably sleeved on the outer side of each of the two inclined guide rods. Straight guide rods are fixedly connected to both sides of the main sliding seat. The opposite ends of the two straight guide rods respectively penetrate through the corresponding secondary sliding seats movably;

[0011] A guiding channel for guiding the linear movement of the main sliding seat and the secondary sliding seat is fixedly provided at the top of the frame. A test box and a support are respectively fixedly provided at the tops of the main sliding seat and the secondary sliding seat. The testing part is arranged between the test box and the support.

[0012] In a preferred embodiment, the testing part includes column cavities opened on the two supports. Pulling rods are provided between the two supports and the test box. The two ends of the pulling rod respectively extend into the test box and the corresponding column cavity, and circular plates slidably connected inside the column cavity and end plates movably connected inside the test box are respectively fixedly provided at the two ends of the pulling rod;

[0013] Pressure sensors are fixedly installed at the opposite ends of the inner cavities of the two column cavities. L-shaped hook rods are fixedly connected to the opposite sides of the two end plates. Arc-shaped grooves are opened on the outer sides of the two L-shaped hook rods. Through grooves are respectively opened on one side of the two end plates. Guide columns movably penetrating through the corresponding through grooves are fixedly connected to both sides of the inner cavity of the test box.

[0014] In a preferred embodiment, a protection mechanism is provided at the top of the test box. The protection mechanism includes a cover plate hingedly installed at one end of the top of the test box. A fastening component is provided between the other end of the top of the test box and the non-hinged end of the cover plate. A stop bar is fixedly provided at the position of the test box corresponding to the hinged end of the cover plate.

[0015] In a preferred embodiment, the fastening component includes a notch opened on the cover plate and an L-shaped through groove opened on the test box opposite to the notch. A cross bar is fixedly provided inside the L-shaped through groove. Clamping bars are movably sleeved on the outer sides of both ends of the cross bar. A first spring sleeved on the outer part of the cross bar is fixedly connected between the two clamping bars;

[0016] The fastening component further includes column grooves opened on the top of the test box. Cushion plates are movably sleeved inside the two column grooves. A second spring is fixedly connected between the bottom end surface of the inner cavity of the column groove and the corresponding cushion plate.

[0017] In a preferred embodiment, an adjustment part for adjusting the position state of the safety hook is further installed on the test box. The adjustment part includes air cylinders I fixedly installed at both ends of the outer side of the test box and an image sensor fixed on the inner side of the cover plate. The telescopic ends of the two air cylinders I are fixedly connected with a pushing seat, and both pushing seats are located inside the test box;

[0018] Two straight square columns are fixedly arranged on the top of each of the two pushing seats, and an L-shaped square column is fixedly arranged on the top of each straight square column. A U-shaped rod is fixedly connected between the correspondingly arranged L-shaped square column and the straight square column.

[0019] In a preferred embodiment, deviation rectifying components are arranged on the top of each of the two pushing seats. The deviation rectifying component includes a movable block arranged between the correspondingly arranged L-shaped square column and the straight square column. A shaft rod is rotatably installed between the two relatively arranged movable blocks. A driving motor two for driving the corresponding shaft rod to rotate is fixedly installed on the outer side of one of the movable blocks. A rubber roller is fixedly sleeved in the middle of the outer side of the shaft rod.

[0020] The deviation rectifying component further includes an arc-shaped square column fixed between the top end faces and the bottom end faces of the two relatively arranged movable blocks. Arc grooves are formed on the opposite sides of the correspondingly arranged L-shaped square column and the straight square column. The arc-shaped square column is slidably installed inside the arc groove on the corresponding side.

[0021] A ring cylinder is fixedly connected between the two relatively arranged L-shaped square columns. A vertical rod is movably inserted through the ring cylinder. A toothed ring that fits with the upper end face of the ring cylinder is fixedly sleeved on the outer side of the vertical rod. A disc is fixedly arranged at the bottom end of the vertical rod. Two L-shaped connecting rods are fixedly connected to the outer side of the disc. The ends of the two L-shaped connecting rods are fixedly connected with sleeves that are movably sleeved on the outer side of the shaft rod. An L-shaped frame is fixedly arranged on the top of one of the L-shaped square columns. A spur gear that meshes with the toothed ring is rotatably installed inside the L-shaped frame. A driving motor three for driving the spur gear to rotate is fixedly installed on the top of the L-shaped frame.

[0022] In a preferred embodiment, lifting components are further arranged on the top of each of the two pushing seats. The lifting component includes a sunk groove formed on the top of the pushing seat. A cylinder two is fixedly installed inside the sunk groove. The telescopic end of the cylinder two is fixedly connected with a lifting plate that fits with the upper end face of the sunk groove.

[0023] In a preferred embodiment, a discharge control component is further arranged at the bottom end of the test box. The discharge control component includes an L-shaped partition plate fixed on the top of the rear frame and a receiving table fixed on the top of the front frame. One end of the L-shaped partition plate penetrates through the test box movably. A leakage groove is formed on the top of the end of the L-shaped partition plate that penetrates through the test box. The leakage groove is directly opposite to the receiving table.

[0024] In a preferred embodiment, the receiving table includes two mounting blocks fixed on the top of the front frame. An inclined table that fits with the upper end face of the front frame is arranged between the two mounting blocks. Ears directly opposite to the mounting blocks are fixedly arranged on both sides of the end of the inclined table close to the test box. A straight rod is fixedly arranged on one side of the two ears. One end of the straight rod penetrates through the corresponding mounting block movably. A connecting spring that fixedly connects the corresponding ear and the mounting block is sleeved on the outer side of the straight rod.

[0025] The beneficial effects of the present invention:

[0026] 1. The present invention can not only perform tensile tests on multiple safety hook samples, but also conduct tensile performance tests on different types of safety hooks, achieving the purpose of multi-purpose use of one machine and improving test efficiency.

[0027] 2. The present invention can achieve leveling and deviation correction of the target safety hook, enabling the target safety hook to be in a corrected state for testing. At the same time, it can also automatically tighten the unlocked lock arm sleeve, improving test accuracy and test quality.

[0028] 3. The present invention can effectively prevent the safety hook that breaks during the tensile test from flying out of the test area, and can also automatically guide the broken safety hook to be discharged for collection and reuse. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0030] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 is a schematic diagram of the structure of the test unit of the present invention from the first perspective;

[0032] Figure 3 is a schematic diagram of the structure of the test unit of the present invention from the second perspective;

[0033] Figure 4 is a schematic diagram of the structure of the test unit of the present invention in the open cover state;

[0034] Figure 5 is a top view of the overall test unit of the present invention;

[0035] Figure 6 is the present invention Figure 5 is a schematic sectional view taken along the line A-A in the present invention;

[0036] Figure 7 is the present invention Figure 5 is a schematic sectional view taken along the line B-B in the present invention;

[0037] Figure 8 is the present invention Figure 5 is a schematic sectional view taken along the line C-C in the present invention;

[0038] Figure 9 is the present invention Figure 6 is an enlarged view of the partial structure A' in the present invention;

[0039] Figure 10It is a schematic structural diagram of the first perspective of the adjustment part of the present invention;

[0040] Figure 11 It is a schematic structural diagram of the second perspective of the adjustment part of the present invention;

[0041] Figure 12 It is a schematic sectional view of the adjustment part of the present invention.

[0042] The reference numerals in the figure are as follows: 1, frame; 2, main bevel gear; 3, test unit; 31, rear side frame; 32, front side frame; 33, rotating shaft; 34, inclined guide rod; 35, sub-bevel gear; 36, thread; 37, main sliding seat; 38, sub-sliding seat; 39, test box; 310, support seat; 311, straight guide rod; 312, guiding channel; 4, cover plate; 5, stop bar; 6, fastening assembly; 61, L-shaped through groove; 62, column groove; 63, cross bar; 64, clamping bar; 65, spring one; 66, spring two; 67, backing plate; 7, receiving table; 8, test part; 81, column cavity; 82, pull rod; 83, circular plate; 84, end plate; 85, L-shaped hook rod; 86, guiding column; 87, pressure sensor; 9, adjustment part; 91, cylinder one; 92, pushing seat; 93, straight square column; 94, L-shaped square column; 95, U-shaped rod; 96, movable block; 97, shaft rod; 98, rubber roller; 99, arc-shaped square column; 910, vertical rod; 911, gear ring; 912, disc; 913, ring cylinder; 914, spur gear; 915, L-shaped frame; 916, L-shaped connecting rod; 917, collar; 918, sinking groove; 919, cylinder two; 920, lifting plate; 10, L-shaped partition; 11, leakage groove; 12, image sensor. Detailed implementation manners

[0043] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0044] The production test device of the present invention belongs to a kind of equipment for testing structural components, and is mainly used for testing the tensile resistance performance of different types of safety hooks, specifically including pear-shaped safety hooks, O-shaped safety hooks, and D-shaped safety hooks.

[0045] Embodiment 1: Referring to the attached drawings of the specification Figures 1 - 4 , the present invention provides a production test device for light safety hooks, including a frame 1. A driving motor one is fixedly installed at the bottom of the frame 1. The output shaft end of the driving motor one movably penetrates through one end of the frame 1 and is fixedly connected with a main bevel gear 2. A plurality of test units 3 are installed on the top of the frame 1 and are evenly distributed in a ring around the axis of the main bevel gear 2;

[0046] The test unit 3 includes a rear side frame 31 and a front side frame 32 fixed to the top of the rack 1. A rotating shaft 33 is rotatably installed through between the rear side frame 31 and the front side frame 32. Wherein, limiting rings that are respectively fitted to the two sides of the rear side frame 31 and the front side frame 32 are fixedly sleeved on the outer sides of both ends of the rotating shaft 33 to ensure the stable transmission of the rotating shaft 33. Diagonal guide rods 34 are fixedly connected at the positions on both sides of the rotating shaft 33 between the rear side frame 31 and the front side frame 32. One end of the rotating shaft 33 close to the main bevel gear 2 is fixedly connected with a sub-bevel gear 35 meshing with the main bevel gear 2. A moving and expanding assembly and a test part 8 installed on the moving and expanding assembly for testing the tensile strength of the safety hook are provided between the rear side frame 31 and the front side frame 32;

[0047] The moving and expanding assembly includes a thread 36 formed on the outer side of the rotating shaft 33 at the position between the rear side frame 31 and the front side frame 32. A main sliding seat 37 is threadedly sleeved on the outer side of the rotating shaft 33. Sub-sliding seats 38 are movably sleeved on the outer sides of the two diagonal guide rods 34. Straight guide rods 311 are fixedly connected to both sides of the main sliding seat 37. The opposite ends of the two straight guide rods 311 respectively pass through the corresponding sub-sliding seats 38 movably. A guiding channel 312 for guiding the main sliding seat 37 and the sub-sliding seats 38 to perform linear motion is fixedly provided on the top of the rack 1. The guiding channel 312 is composed of two parallel side plates for limiting the bottom ends of the main sliding seat 37 and the sub-sliding seats 38. A test box 39 and a support 310 are respectively fixedly provided at the tops of the main sliding seat 37 and the sub-sliding seats 38. The test part 8 is arranged between the test box 39 and the support 310.

[0048] It should be noted that before the test work is carried out, the test box 39 is at the position of one end of the rotating shaft 33 close to the main bevel gear 2 (i.e., the initial position). Among them, during the process of testing the tensile performance of the safety hook sample to be tested (hereinafter referred to as "target safety hook"), after the target sample is sequentially placed inside the test box 39 on each test unit 3, the driving motor 1 is started to drive the main bevel gear 2 to rotate. The rotating main bevel gear 2 is used to synchronously drive the sub-bevel gears 35 on multiple test units 3 to rotate, thereby driving the corresponding rotating shaft 33 to rotate. During the rotation of the rotating shaft 33, the straight guide rod 311 passing through the sub-sliding seat 38 and the guiding channel 312 of the corresponding main sliding seat 37 are used to limit the main sliding seat 37, so that the main sliding seat 37 only performs linear motion along the axial direction of the straight guide rod 311 under the rotation of the corresponding sub-bevel gear 35. At the same time, the two sub-sliding seats 38 will perform a flaring linear motion following the linear motion of the main sliding seat 37 under the guidance of the corresponding diagonal guide rods 34 and the guiding channel 312, thereby driving the test part 8 to perform tensile test on the target safety hook.

[0049] Specifically, as Figure 3 、Figure 5 and Figure 7 As shown in Figure 7 , the test unit 8 includes a column cavity 81 formed on two brackets 310. Tie rods 82 are provided between the two brackets 310 and the test box 39. The two ends of each tie rod 82 extend into the test box 39 and the corresponding column cavity 81 respectively. A circular plate 83 slidably connected inside the column cavity 81 and an end plate 84 movably connected inside the test box 39 are fixedly provided at the two ends of the tie rod 82 respectively;

[0050] Pressure sensors 87 are fixedly installed at opposite ends of the inner cavities of the two column cavities 81. L-shaped hook rods 85 are fixedly connected to the opposite sides of the two end plates 84. Arc-shaped grooves are formed on the outer sides of the two L-shaped hook rods 85. The arc-shaped grooves can be used as reference test sites for the target safety hook. Through grooves are formed through one side of the two end plates 84. Guide columns 86 movably penetrating through the corresponding through grooves are fixedly connected to both sides of the inner cavity of the test box 39. Among them, during the entire test process, the guide columns 86 always remain in the state of penetrating through the corresponding through grooves. The opposite sides of the two guide columns 86 are both arc-shaped structures for guiding the target workpiece placed inside the test box 39 to quickly fall onto the test station. The lower end surfaces of the guide columns 86 are arranged in a horizontal coplanar manner with the upper end surfaces of the corresponding L-shaped hook rods 85 at corresponding positions. During the tensile test, the guide columns 86 can be used to block the upper ends of the corresponding L-shaped hook rods 85, so that the ends of the L-shaped hook rods 85 away from the corresponding end plates 84 will not deflect in the direction away from the corresponding end plates 84 during the tensile test, improving the service life of the L-shaped hook rods 85.

[0051] It should be noted that during the tensile test of the target safety hook, after the target safety hook is placed inside the test box 39, the ends of the two L-shaped hook rods 85 away from the corresponding end plates 84 both pass through the inner ring of the target safety hook. That is, under the guidance of the arc-shaped structures on the two guide columns 86, the target safety hook falls from the gaps between the two groups of L-shaped hook rods 85 and the corresponding guide columns 86. After the placement of the target safety hook is completed, as the two sub-sliders 38 perform a flaring linear motion driven by the main slider 37, the two tie rods 82 will move away from each other from the initial state, thereby pulling the corresponding end plates 84 to perform a linear motion along the guide columns 86 at their respective positions, and driving the two L-shaped hook rods 85 to move to a state where their upper end surfaces are completely blocked by the lower end surfaces of the corresponding guide columns 86;

[0052] When the two pull rods 82 continue to move away from each other until the target safety hook is completely tightened by the two L-shaped hook rods 85 (in this state, the end plate 84 and the corresponding side of the inner cavity of the test box 39 are still separated), as the two secondary sliding seats 38 continue to perform a flaring linear motion, the distance between the two circular plates 83 and the corresponding pressure sensors 87 will gradually decrease until the circular plates 83 come into contact with the corresponding pressure sensors 87. Then, when the two secondary sliding seats 38 continue to perform a flaring linear motion, the circular plates 83 will apply pressure to the corresponding pressure sensors 87 to test the tensile resistance of the target safety hook. During this process, before the target safety hook breaks, the pressure data detected by the pressure sensors 87 will continue to rise. Once the target safety hook breaks, the pressure data detected by the pressure sensors 87 will not continue to rise and may even continue to decrease. Therefore, the peak pressure detected by the pressure sensors 87 can reflect the tensile strength of the target safety hook.

[0053] Specifically, as Figures 3 - 6 and Figure 9 shown, a protection mechanism is provided at the top of the test box 39. The protection mechanism includes a cover plate 4 hingedly installed at one end of the top of the test box 39. A fastening component 6 is provided between the other end of the top of the test box 39 and the non-hinged end of the cover plate 4. A stop strip 5 is fixedly provided at the position corresponding to the hinged end of the cover plate 4 on the outside of the test box 39. The setting of the stop strip 5 can make the cover plate 4 be opened to 120°, which can not only prevent the opened cover plate 4 from easily closing automatically, but also prevent the cover plate 4 from completely adhering to the outside of the test box 39 after being opened, facilitating the cover closing operation after loading.

[0054] The fastening component 6 includes a notch opened on the cover plate 4 and an L-shaped through groove 61 opened on the test box 39 opposite to the notch. A cross bar 63 is fixedly provided inside the L-shaped through groove 61. Card strips 64 are movably sleeved on the outer sides of both ends of the cross bar 63. A first spring 65 sleeved on the cross bar 63 is fixedly connected between the two card strips 64. Among them, the card strip 64 is composed of an L-shaped strip penetrating the L-shaped through groove 61 and a triangular block fixed at one end of the L-shaped strip. And when the two card strips 64 are in the state as Figure 9 shown, the first spring 65 is still in a compressed state, which can effectively improve the fastening effect of the cover plate 4 in the cover closing state. The fastening component 6 further includes a column groove 62 opened on the top of the test box 39. Cushion plates 67 are movably sleeved inside the two column grooves 62. A second spring 66 is fixedly connected between the bottom end surface of the inner cavity of the column groove 62 and the corresponding cushion plate 67. Among them, when the second spring 66 is in the state as Figure 9 shown, the second spring 66 is also in a compressed state, which is beneficial to using the popped-up cushion plate 67 to lift the cover plate 4 by a certain angle when releasing the fastening state of the card strip 64 on the cover plate 4, facilitating quick opening of the cover to replenish the target safety hook.

[0055] It should be noted that after the target safety hook is placed on the test station inside the test box 39, the cover plate 4 can be buckled to the top of the test box 39, and the clamping strip 64 can be used to limit the buckling state of the cover plate 4, which can effectively prevent the safety hook broken during the tensile test from flying out of the test box 39, thus avoiding injury to people or bringing inconvenience to the collection of broken safety hooks.

[0056] Specifically, as Figure 3 , Figure 5 and Figure 8 shown, a discharge control assembly is further provided at the bottom end of the test box 39. The discharge control assembly includes an L-shaped partition 10 fixed to the top of the rear frame 31 and a receiving table 7 fixedly installed on the top of the front frame 32. One end of the L-shaped partition 10 movably penetrates the test box 39, and a leakage groove 11 is opened at the top of the end of the L-shaped partition 10 penetrating the test box 39. The leakage groove 11 is directly opposite to the receiving table 7. Among them, the upper surface of the L-shaped partition 10 is attached to the outer side of the lower end of the L-shaped hook rod 85, and limit strips can be fixedly provided on both the upper surface and the lower surface of the L-shaped partition 10 inside the test box 39. The limited L-shaped partition 10 can be used to support the L-shaped hook rod 85, and the anti-tensile performance of the L-shaped hook rod 85 can be further improved by the occlusion of the bottom end face of the guiding column 86 against the upper end face of the L-shaped hook rod 85;

[0057] The receiving table 7 includes two mounting blocks fixed to the top of the front frame 32. An inclined platform that fits against the upper end face of the front frame 32 is provided between the two mounting blocks. Among them, the upper end face of the inclined platform can be set as an inwardly concave arc surface, and a collection box for collecting broken safety hooks can be added outside the front frame 32. The inwardly concave arc surface on the inclined platform can be used to guide the safety hook that has completed the test and broken into the inside of the collection box, so as to facilitate subsequent centralized reuse processing. Both sides of the end of the inclined platform close to the test box 39 are fixedly provided with ear blocks opposite to the mounting blocks. A straight rod is fixed to one side of the two ear blocks. One end of the straight rod movably penetrates the corresponding mounting block, and a connecting spring fixedly connecting the corresponding ear block and the mounting block is sleeved outside the straight rod. In addition, a stop disc can be fixed to the end of the straight rod far from the corresponding ear block, which can effectively prevent the straight rod from completely disengaging from the mounting block under the action of the corresponding connecting spring.

[0058] It should be noted that during the process of testing the anti-tensile performance of the target safety hook, as the test progresses, the test box 39 will slide outside the L-shaped partition 10. At the same time, the main sliding seat 37 that moves synchronously with the test box 39 will push the inclined platform to move along the axis of the straight rod and compress the connecting spring outside the straight rod for energy storage. And the high-position end of the inclined platform in this state is located directly below the test box 39. When the target safety hook breaks during the test, the broken safety hook will pass through the leakage groove 11 and fall to the area where the inwardly concave arc surface of the inclined platform is located, and then slide along the inclined platform into the inside of the collection box for automatic collection.

[0059] Example 2: Referring to the accompanying drawings of the specification Figure 5 、 Figure 8 and Figures 10 - 12 , the present invention also provides a production test device for a lightweight safety hook. An adjustment part 9 for adjusting the position state of the safety hook is further installed on the test box 39. The adjustment part 9 includes a first cylinder 91 fixedly installed at both ends outside the test box 39 and an image sensor 12 fixed inside the cover plate 4 for detecting the position state of the target safety hook. The telescopic ends of the two first cylinders 91 are fixedly connected with a push seat 92 that moves along the upper surface of the L-shaped partition 10. Among them, the opposite sides of the two push seats 92 are both inclined surfaces, and one is set as a T-shaped structure and the other is set as a U-shaped structure, and the two can just complete the opposite insertion. In addition, the thickness of the push seat 92 is greater than the diameter of the L-shaped hook rod 85, that is, the upper end surface of the push seat 92 is higher than the horizontal plane where the highest point of the horizontal section of the L-shaped hook rod 85 is located. The two push seats 92 are both located inside the test box 39. Two straight columns 93 are fixedly arranged on the tops of the two push seats 92. An L-shaped square column 94 is fixedly arranged on the top of each straight column 93. A U-shaped rod 95 is fixedly connected between the correspondingly arranged L-shaped square column 94 and the straight column 93;

[0060] Rectification components are arranged on the tops of the two push seats 92. The rectification components include a movable block 96 arranged between the correspondingly arranged L-shaped square column 94 and the straight column 93. A shaft rod 97 is rotatably installed between the two oppositely arranged movable blocks 96. A second driving motor for driving the corresponding shaft rod 97 to rotate is fixedly installed on the outside of one of the movable blocks 96. A rubber roller 98 is fixedly sleeved in the middle of the outside of the shaft rod 97. The rectification components also include an arc-shaped square column 99 fixed between the top end surfaces and the bottom end surfaces of the two oppositely arranged movable blocks 96. Arc grooves are opened on the opposite sides of the correspondingly arranged L-shaped square column 94 and the straight column 93. The arc-shaped square column 99 is slidably installed inside the arc groove on the corresponding side, and the arc groove can be used to cooperate with the arc-shaped square column 99 to form an arc-shaped movement track for the movable block 96 to move, so as to cooperate with the position adjustment of safety hooks of different styles (such as pear-shaped, D-shaped, O-shaped, etc.);

[0061] A ring cylinder 913 is fixedly connected between the two oppositely arranged L-shaped square columns 94. A vertical rod 910 is movably inserted inside the ring cylinder 913. A toothed ring 911 that fits with the upper end surface of the ring cylinder 913 is fixedly sleeved on the outside of the vertical rod 910. A disc 912 is fixedly arranged at the bottom end of the vertical rod 910. Two L-shaped connecting rods 916 are fixedly connected to the outside of the disc 912. The ends of the two L-shaped connecting rods 916 are both fixedly connected with a collar 917 that is movably sleeved on the outside of the shaft rod 97. A driving motor three for driving the straight gear 914 to rotate is fixedly installed on the top of the L-shaped frame 915, and a straight gear 914 that meshes with the toothed ring 911 is rotatably installed inside the L-shaped frame 915;

[0062] The tops of the two pushing seats 92 are also provided with a lifting assembly. The lifting assembly includes a counterbore 918 formed in the top of the pushing seat 92. A second cylinder 919 is fixedly installed inside the counterbore 918. The end of the telescopic end of the second cylinder 919 is fixedly connected to a lifting plate 920 that fits against the upper end surface of the counterbore 918. Among them, the lifting plate 920 is configured as a right trapezoidal structure, and the inclined surface on the lifting plate 920 in the initial non-lifted state is coplanar with the inclined surface on the corresponding pushing seat 92.

[0063] It should be noted that during the process of adjusting the position state of the target safety hook placed inside the test box 39, after the target safety hook is placed on the test station inside the test box 39, due to the arc surface on the surface of the L-shaped hook rod 85, after the target safety hook is placed on the test station, the target safety hook will tilt to one side and rest on the upper surface of the L-shaped partition 10. At this time, the two first cylinders 91 will be controlled to push the two pushing seats 92 to move towards each other, so that the tip of the pushing seat 92 close to the tilting direction of the target safety hook during movement is inserted under the target safety hook. As the pushing seat 92 advances, the downward-tilting end of the target safety hook will gradually rise along the inclined surface on the corresponding pushing seat 92. During this process, since there is no obstruction at the upward-tilting end of the target safety hook, when the tip of the pushing seat 92 close to the tilting direction of the target safety hook is inserted under the target safety hook, it will push the entire target safety hook towards the direction of the other pushing seat 92, and may even cause the target safety hook to tilt towards the direction of the other pushing seat 92. As the two pushing seats 92 move towards each other, the target safety hook will directly rest between the inclined surfaces of the two pushing seats 92 and move upward along the inclined surfaces of the pushing seats 92, and finally rest between the upper end surfaces of the two lifting plates 920, completing the leveling process of the target safety hook placed on the test station.

[0064] After the leveling process of the target safety hook is completed, the second cylinders 919 on the two pushing seats 92 will be used to synchronously push the corresponding lifting plates 920 upward to a position where the axis line of the rubber roller 98 is flush with the horizontal mid-plane of the leveled target safety hook, and it is assumed that this position is flush with the horizontal mid-plane of the arc-shaped groove on the L-shaped hook rod 85. At this time, if the image sensor 12 detects that the state of the target safety hook is in an inclined state (i.e., deviating from the force application position for the correct tensile test), then one of the first cylinders 91 will be controlled to push the pushing seat 92 at its position closer to the target safety hook, so that the rubber roller 98 on it comes into contact with the target safety hook. Then, the drive motor three will be started to drive the spur gear 914 to rotate, and drive the gear ring 911 to rotate, thereby using the rotating gear ring 911 to drive the shaft rod 97 to rotate, and using the rubber roller 98 that rotates synchronously with the shaft rod 97 to deflect the target safety hook to swing, realizing the correction of the inclined target safety hook.

[0065] Among them, it should be noted that during the rectification process, it is achieved through multiple yaws of the rubber roller 98. That is, after one yaw is completed, the third driving motor stops working, and the corresponding push seat 92 will also retract under the action of the first cylinder 91. At the same time, the yawed rubber roller 98 will reset. Then, the push seat 92 continues to approach the target safety hook, so that the reset rubber roller 98 on it contacts the target safety hook again, and the third driving motor is started again to drive the rubber roller 98 to yaw. This process is repeated multiple times until the image sensor 12 detects that the inclined state of the target safety hook is completely corrected. In addition, during the rectification process, two push seats 92 can be used to alternately perform the rectification action to prevent the target safety hook from detaching from the upper end surface of one of the lifting plates 920 before the rectification is completed, resulting in the destruction of the leveling state or even a more serious inclined state of the target safety hook;

[0066] When the leveling and rectification of the target safety hook are completed, the main slide 37 and the sub-slide 38 can be controlled to move synchronously, and the sub-slide 38 that undergoes a flaring linear motion is used to control the two L-shaped hook rods 85 to move away from each other, so that the pulling force application point of the target safety hook is inside the arc-shaped groove on the L-shaped hook rod 85 (that is, the target safety hook after leveling and rectification is in a taut state). If the image sensor 12 detects that the lock arm sleeve on the target safety hook is in a fully locked state, the tensile test is directly carried out. Otherwise, the movement of the sub-slide 38 will be paused, and the push seat 92 close to the lock arm sleeve on the target safety hook will be controlled to move in the direction of the L-shaped hook rod 85, so that the rubber roller 98 contacts the lock arm sleeve. Then, the second driving motor is started to drive the shaft rod 97 to rotate, and the rubber roller 98 that rotates synchronously with the shaft rod 97 is used to drive the lock arm sleeve to rotate until the lock arm sleeve rotates to a fully locked state;

[0067] Among them, during the process of tightening the lock arm sleeve, since the angles of the lock arm sleeves on different styles of safety hooks (such as pear-shaped, D-shaped, O-shaped, etc.) are different, it is necessary to first use the third driving motor to drive the rubber roller 98 to swing horizontally, so that the rubber roller 98 yaws to a state parallel to the lock arm sleeve, and then the lock arm sleeve tightening action can be carried out.

[0068] In the above technical solution, the first driving motor mentioned is a Y-series AC motor; the second and third driving motors mentioned are both stepping motors of model STEP-085-17; the pressure sensor 87 mentioned is a U10M / 5KN force sensor; the image sensor 12 mentioned is a CCD sensor; the first cylinder 91 and the second cylinder 919 mentioned are both single-acting cylinders of model DSA25N200.

[0069] 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 by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A light safety hook production and testing device, comprising a frame (1), characterized in that: A driving motor 1 is fixedly mounted at the bottom of the frame (1); an output shaft end of the driving motor 1 movably passes through one end of the frame (1) and is fixedly connected to a main bevel gear (2); and a plurality of test units (3) are evenly distributed in a ring shape around the axis of the main bevel gear (2) and mounted on the top of the frame (1); The test unit (3) comprises a rear side frame (31) and a front side frame (32) fixed on the top of the frame (1); a rotating shaft (33) is rotatably installed between the rear side frame (31) and the front side frame (32); oblique guide rods (34) are fixedly connected to positions on both sides of the rotating shaft (33) between the rear side frame (31) and the front side frame (32); and a secondary bevel gear (35) meshing with the main bevel gear (2) is fixedly connected to one end of the rotating shaft (33) close to the main bevel gear (2); A movable expansion assembly and a testing portion (8) mounted on the movable expansion assembly and used for performing a tensile strength test on the safety hook are provided between the rear side frame (31) and the front side frame (32); The movable expansion assembly comprises a thread (36) tapped on the outside of the rotating shaft (33) and located between the rear side frame (31) and the front side frame (32); a main slide (37) is sleeved on the outside of the rotating shaft (33) through the thread; auxiliary slides (38) are movably sleeved on the outsides of the two oblique guide rods (34); straight guide rods (311) are fixedly connected on both sides of the main slide (37); and opposite ends of the two straight guide rods (311) are movably inserted through the corresponding auxiliary slides (38); A guide groove (312) for guiding the main slide (37) and the auxiliary slide (38) to perform linear motion is fixedly provided on the top of the frame (1); a test box (39) and a bracket (310) are fixedly provided on the top of the main slide (37) and the auxiliary slide (38), respectively; and the test section (8) is provided between the test box (39) and the bracket (310); The test section (8) comprises a column cavity (81) opened on two brackets (310), a pull rod (82) is provided between the two brackets (310) and the test box (39), two ends of the pull rod (82) respectively extend into the test box (39) and the corresponding column cavity (81), and a circular plate (83) slidably connected to the inside of the column cavity (81) and an end plate (84) movably connected to the inside of the test box (39) are fixedly provided at both ends of the pull rod (82); Pressure sensors (87) are fixedly mounted on opposite ends of the inner cavities of the two column cavities (81); L-shaped hook rods (85) are fixedly connected to opposite sides of the two end plates (84); arc-shaped grooves are provided on the outer sides of the two L-shaped hook rods (85); through grooves are provided through one side of the two end plates (84); and guide columns (86) that are movably provided through the corresponding through grooves are fixedly connected to both sides of the inner cavity of the test box (39).

2. A light safety hook production and testing device according to claim 1, characterized in that: The top of the test box (39) is provided with a protective mechanism, the protective mechanism comprising a cover plate (4) hingedly mounted on one end of the top of the test box (39), a fastening assembly (6) is provided between the other end of the top of the test box (39) and the non-hinged end of the cover plate (4), and a stopper strip (5) is fixedly provided on the outside of the test box (39) at a position corresponding to the hinged end of the cover plate (4).

3. A light safety hook production and testing device according to claim 2, characterized in that: The fastening assembly (6) comprises a notch formed on the cover plate (4) and an L-shaped through slot (61) formed on the test box (39) and facing the notch. A cross bar (63) is fixedly provided inside the L-shaped through slot (61). Both ends of the cross bar (63) are movably sleeved with clamping strips (64) on the outside. A spring (65) sleeved on the outside of the cross bar (63) is fixedly connected between the two clamping strips (64). The fastening assembly (6) further comprises a column slot (62) formed on the top of the test box (39), a backing plate (67) being movably sleeved inside the two column slots (62), and a second spring (66) being fixedly connected between the bottom end surface of the inner cavity of the column slot (62) and the corresponding backing plate (67).

4. A light safety hook production and testing device according to claim 2, characterized in that: The test box (39) is also provided with an adjustment unit (9) for adjusting the position state of the safety hook, the adjustment unit (9) comprising a cylinder (91) fixedly mounted at both ends of the outer side of the test box (39) and an image sensor (12) fixedly mounted on the inner side of the cover plate (4), the telescopic ends of the two cylinders (91) being fixedly connected to push seats (92), the two push seats (92) being both located inside the test box (39); Two rectangular columns (93) are fixedly provided on the top of the two push seats (92), an L-shaped square column (94) is fixedly provided on the top of each rectangular column (93), and a U-shaped rod (95) is fixedly connected between the corresponding L-shaped square columns (94) and the rectangular columns (93).

5. A light safety hook production and testing device according to claim 4, characterized in that: A deviation correction component is provided on the top of each of the two push seats (92), and the deviation correction component includes a movable block (96) disposed between a corresponding L-shaped square column (94) and a rectangular column (93), and a shaft (97) is rotatably mounted between the two movable blocks (96) disposed opposite to each other, and a driving motor (2) for driving the corresponding shaft (97) to rotate is fixedly mounted on the outer side of one of the movable blocks (96), and a rubber roller (98) is fixedly sleeved on the middle part of the outer side of the shaft (97); The deviation correction component also includes an arc-shaped square column (99) fixed between the top end surface and the bottom end surface of two movable blocks (96) arranged opposite to each other, and arc grooves are provided on the opposite sides of the corresponding L-shaped square column (94) and the rectangular square column (93), and the arc-shaped square column (99) is slidably mounted inside the arc grooves on the corresponding sides; A ring cylinder (913) is fixedly connected between two L-shaped square columns (94) arranged opposite to each other, a vertical rod (910) is movably inserted into the ring cylinder (913), a gear ring (911) that fits the upper end surface of the ring cylinder (913) is fixedly sleeved on the outer side of the vertical rod (910), a disk (912) is fixedly provided at the bottom end of the vertical rod (910), two L-shaped connecting rods (916) are fixedly connected to the outer side of the disk (912), and the ends of the two L-shaped connecting rods (916) are fixedly connected to a sleeve ring (917) that is movably sleeved on the outer side of the shaft rod (97), an L-shaped frame (915) is fixedly provided on the top of one of the L-shaped square columns (94), a spur gear (914) meshing with the gear ring (911) is rotatably installed on the inner side of the L-shaped frame (915), and a driving motor (3) that drives the spur gear (914) to rotate is fixedly installed on the top of the L-shaped frame (915).

6. A light safety hook production and testing device according to claim 5, characterized in that: A lifting assembly is also provided on the top of the two push seats (92), and the lifting assembly includes a sink (918) opened on the top of the push seat (92), a second cylinder (919) is fixedly installed inside the sink (918), and a lifting plate (920) is fixedly connected to the telescopic end of the second cylinder (919) and is in contact with the upper end surface of the sink (918).

7. A light safety hook production and testing device according to claim 1, characterized in that: The bottom end of the test box (39) is also provided with a material discharge control assembly, which comprises an L-shaped partition (10) fixed to the top of the rear side frame (31) and a material receiving platform (7) fixedly mounted on the top of the front side frame (32); one end of the L-shaped partition (10) movably penetrates the test box (39); a drain groove (11) is provided at the top of one end of the L-shaped partition (10) penetrating the test box (39); the drain groove (11) is directly opposite to the material receiving platform (7).

8. A light safety hook production and testing device according to claim 7, characterized in that: The material receiving platform (7) comprises two mounting blocks fixed on the top of the front side frame (32), an inclined platform which is in contact with the upper end surface of the front side frame (32) is provided between the two mounting blocks, ear blocks which are opposite to the mounting blocks are fixed on both sides of one end of the inclined platform close to the test box (39), a straight rod is fixed on one side of the two ear blocks, one end of the straight rod movably passes through the corresponding mounting block, and a connecting spring which is sleeved on the outer side of the straight rod and fixedly connects the corresponding ear block and the mounting block.

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