Load lifting limiter performance detection device for tower crane

Abstract

The invention discloses a performance detection device for a load lifting limiter for a tower crane. The performance detection device comprises a detection mechanism, a material pouring mechanism; and a control mechanism. An auxiliary rope is arranged on one side of a steel rope, the problems that when the steel rope drives a containing box to ascend and descend, the steel rope cannot bear the weight of the containing box due to the fact that the containing box is too heavy, the ascending and descending side of the steel rope is broken, and the lifting capacity limiter is not conveniently detected are avoided, and when a lead screw drives the containing box to move upwards to the top, a pressing block makes contact with a hanging rod in a connecting groove and presses the hanging rod; a hanging rod is rotated through a rotating shaft, the other side of the hanging rod is separated from a fixing groove, a rotating plate is rotated, materials are placed in a placing box, the lifting capacity limiter is conveniently detected, and the lifting capacity limiter can be accurately detected by adding iron sand into the placing box for many times and observing changes of iron sand weight values displayed by an electronic scale and the lifting capacity limiter in a display screen. And judging whether the numerical value of the lifting capacity limiter has errors due to too many times of overload of the lifted goods or improper operation or not.

Description

Technical Field

[0001] The present invention relates to the technical field of tower cranes, and particularly to a performance detection device for a load limiter used in tower cranes. Background Art

[0002] The tower crane is abbreviated as tower hoist, which is a rotating crane with a jib installed on the upper part of a tall tower body. The load limiter is a safety protection device for lifting machinery. This device has functions such as sound alarm, immediate alarm, cutting off the second motor circuit of the crane hoist, and displaying the weight of the lifted heavy object, which can avoid equipment and personal accidents caused by overloading of lifting equipment.

[0003] In the actual use process, the maximum load of the load limiter is determined by the bearing capacity and measurement range of its sensor. Since the rated load capacities of different models of load limiters are not equal, when the load limiter is used on a tower crane to lift goods and the number of overloaded times is too many or the operation is improper, the value of the load limiter will be inaccurate and errors will occur. It is necessary to detect the performance of the load limiter to avoid the situation where the goods are overweight due to errors in the value of the load limiter when using the tower crane, resulting in the inability to transport the goods. Therefore, in order to solve the above problems, we need to design a performance detection device for a load limiter used in tower cranes. Summary of the Invention

[0004] The purpose of the present invention is to provide a performance detection device for a load limiter used in tower cranes to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A performance detection device for a load limiter used in tower cranes, comprising:

[0006] A detection mechanism, including a box body. A steel rope assembly is arranged in the box body. A placement assembly is arranged on the steel rope assembly. A pressing assembly is arranged on the placement assembly. A movable assembly is arranged on the placement assembly. A door panel is arranged on the box body. A load limiter is fixedly connected to the steel rope assembly;

[0007] A blanking mechanism, including a pressing block. The pressing block is fixedly connected to one side of the inner cavity of the box body. A lifting assembly is arranged on one side of the inner cavity of the box body. A switch assembly is arranged on the lifting assembly;

[0008] A control mechanism, including a collection box. The collection box is located at the bottom of the inner cavity of the box body. A control component is arranged on one side of the collection box. A material discharging component is arranged in the inner cavity of the collection box.

[0009] Preferably, a display screen is provided on the outer side of the box body, a controller is provided on the outer side of the box body, connecting blocks are fixedly connected to both sides of the inner cavity of the box body, a storage box is arranged in the inner cavity of the box body, a lifting groove is arranged on one side of the inner cavity of the box body, and a material return groove is arranged on the connecting block;

[0010] Preferably, a transparent partition is provided on the door panel.

[0011] Preferably, the steel rope assembly includes a first motor, a first bevel gear, a second bevel gear, a rotating roller, a steel rope and an auxiliary rope. The first bevel gear is fixedly connected to the power output end of the first motor, the second bevel gear is fixedly connected to the rotating roller, the rotating roller is rotatably connected in the storage box, the first bevel gear meshes with the second bevel gear, one end of the steel rope is located on the rotating roller, the other end of the steel rope is fixedly connected to the top of the inner cavity of the box body, one end of the auxiliary rope is fixedly connected to the steel rope, and the other end of the auxiliary rope is fixedly connected to one side of the inner cavity of the box body.

[0012] Preferably, the placing assembly includes a placing box, a lifting plate, a first spring and a control plate. The placing box is located on the steel rope, control grooves are arranged on both sides of the placing box, the control plate is fixedly connected to the lifting plate, one end of the first spring is fixedly connected to the inner wall of the control groove, the other end of the first spring is fixedly connected to the top of the lifting plate, and a top plate is fixedly connected to the top of the placing box.

[0013] Preferably, the pressing assembly includes a wedge block, a first side plate and a second spring. Pressing grooves are arranged on both sides of the placing box, the first side plate is fixedly connected to the wedge block, one end of the second spring is fixedly connected to the first side plate, and the other end of the second spring is fixedly connected to the pressing groove.

[0014] Preferably, the moving assembly includes a fixed block, a limiting plate and a third spring. A positioning groove is arranged on the lifting plate, the fixed block is fixedly connected to one side of the limiting plate, one end of the third spring is fixedly connected to the limiting plate, and the other end of the third spring is fixedly connected to the inner wall of the positioning groove.

[0015] Preferably, the lifting assembly includes a second motor, a lead screw and a placing box. The second motor is fixedly connected to the lead screw, the placing box is threadedly connected to the lead screw, the lead screw is located in the lifting groove, a connecting groove is arranged on the placing box, and a fixed roller is fixedly connected to the bottom of the placing box;

[0016] Preferably, the switch assembly includes a rotating plate, a fixing plate, a hanging rod, a rotating shaft and a fourth spring. The fixing plate is fixedly connected to the rotating plate. A fixing groove is provided on the fixing plate. The rotating shaft is fixedly connected to the hanging rod. The rotating shaft is rotatably connected to a circular groove on the side wall of the connecting groove. One end of the fourth spring is fixedly connected to one end of the hanging rod, and the other end of the fourth spring is fixedly connected to the inner wall of the connecting groove. A rotating groove is fixedly connected to the bottom of the rotating plate. The fixed roller is rotatably connected to the rotating groove. An active plate is fixedly connected to the fixing plate.

[0017] Preferably, a first chamber is provided in the collection box, a second chamber is provided in the collection box, a through groove is provided on the first chamber, a sliding groove is provided at the top of the second chamber, and an active groove is provided on one side of the second chamber.

[0018] Preferably, the control assembly includes a baffle, a pressing plate, a connecting plate, a protective plate and a fifth spring. The pressing plate is fixedly connected to the baffle. The connecting plates are fixedly connected to both sides of the baffle. The protective plate is fixedly connected to the connecting plates. One end of the fifth spring is fixedly connected to the connecting plate, and the other end of the fifth spring is fixedly connected to the inner wall of the active groove. The baffle is slidably connected to the active groove. An inclined plate is fixedly connected to the baffle.

[0019] Preferably, the feeding assembly includes a sliding rod, a joint, a pushing plate, an electronic scale, an air compressor and a second side plate. The sliding rod is fixedly connected to the sliding groove. The pushing plate is slidably connected to the sliding rod. One end of the joint is rotatably connected to the convex posts on both sides of the connecting plate, and the other end of the joint is rotatably connected to the convex posts on both sides of the pushing plate. The air compressor is fixedly connected to the side wall of the second chamber. The electronic scale is fixedly connected to the second chamber. The second side plate is fixedly connected to the electronic scale. One side pipeline of the air compressor is located in the first chamber, and the other side pipeline of the air compressor is located above the electronic scale. The other side pipeline of the air compressor is slidably connected to the hole in the pushing plate. A convex plate is fixedly connected to one side of the pushing plate.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] The present invention optimizes an existing performance detection device for the load limiter of a tower crane. First, the load limiter to be detected is fixed to one end where the steel rope is fixedly connected to the box body, which facilitates the detection of the performance of the load limiter. An auxiliary rope is arranged on one side of the steel rope to prevent the steel rope from breaking on the side where it lifts and lowers due to the excessive weight of the placement box when the steel rope drives the placement box to lift and lower, which is not conducive to the detection of the load limiter. When starting to detect the performance of the load limiter, when the air compressor works, the iron sand in the first chamber of the collection box can be extracted to the electronic scale through the pipeline of the air compressor, which facilitates the electronic scale to measure the weight of the iron sand. At this time, since the push plate is provided with an inclined groove, when the iron sand in the air compressor comes out of the pipeline, the inclined groove on the push plate can buffer and reduce the iron sand, preventing the iron sand from directly falling onto the electronic scale and damaging the electronic scale, which affects the measurement of the weight of a certain amount of iron sand by the electronic scale. Further, through the protection of the second side plate, the iron sand on the electronic scale can be prevented from falling into the second chamber, which has an adverse effect on the performance measurement of the value of the load limiter for pulling goods.

[0022] When the second motor works forward, the lead screw rotates forward, driving the placement box to move downward, so that the bottom of the placement box contacts the pressure plate and presses the pressure plate, causing the pressure plate to drive the baffle to move downward. At the same time, since the baffle and the push plate are connected by a joint, when the baffle moves downward, it drives the push plate to move horizontally, so that the iron sand on the electronic scale can be pushed to the baffle. When the placement box drives the baffle to move to the lowest point, the push plate can completely push the iron sand into the placement box for collection, which is convenient for subsequent detection of the performance of the load limiter. When the second motor works in reverse, the lead screw rotates in reverse, driving the placement box to move upward, separating the pressure plate from the placement box. Through the action of the fifth spring, the baffle returns to its original position. At the same time, through the joint, the push plate returns to its original position, enabling the air compressor to extract the iron sand in the first chamber to the electronic scale, which is convenient for adding different weights of iron sand to the placement box subsequently and observing whether there is an error in the value of the load limiter. Further, when the lead screw drives the placement box to move upward to the top, the pressing block contacts and presses the hanging rod in the connecting groove, causing the hanging rod to rotate through the rotating shaft, so that the other side of the hanging rod disengages from the fixing groove, causing the rotating plate to rotate, so that the placement box discharges materials into the placement box, which is convenient for detecting the load limiter. By adding iron sand to the placement box multiple times and observing the changes in the weight values of the iron sand displayed on the electronic scale and the load limiter on the display screen, it is judged whether the value of the load limiter has an error due to excessive overload times of lifting goods or improper operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2Internal schematic diagram of the overall structure in the present invention;

[0025] Figure 3 Cross-sectional schematic diagram of the overall structure in the present invention;

[0026] Figure 4 Schematic diagram of the detection mechanism in the present invention;

[0027] Figure 5 Schematic diagram of the structure of the control mechanism in the present invention;

[0028] Figure 6 Schematic diagram of the structure of the control component in the present invention;

[0029] Figure 7 Schematic diagram of the structure of the placement component in the present invention;

[0030] Figure 8 Schematic diagram of the structure of the movable component in the present invention;

[0031] Figure 9 Schematic diagram of the structure of the switch component in the present invention;

[0032] Figure 10 is Figure 7 Schematic diagram of area A in;

[0033] In the figure: 100, detection mechanism; 101, box body; 110, steel rope assembly; 120, placement assembly; 130, pressing assembly; 140, movable assembly; 102, door panel; 103, lifting weight limiter; 101a, display screen; 101b, controller; 101c, connecting block; 101d, storage box; 101e, lifting groove; 101f, return material groove; 102a, transparent partition; 110a, first motor; 110b, first bevel gear; 110c, second bevel gear; 110d, rotating roller; 110e, steel rope; 110f, auxiliary rope; 120a, placement box; 120b, lifting plate; 120c, first spring; 120d, control board; 120e, control groove; 120f, top plate; 130a, wedge block; 130b, first side plate; 130c, second spring; 130d, pressing groove; 140a, fixed block; 140b, limiting plate; 140c, third spring; 140d, positioning groove; 200, tipping mechanism; 201, pressing block; 210, lifting assembly; 220, switch assembly; 210a, second motor; 210b, lead screw; 210c, placement box; 210d, connecting groove; 210e, fixed roller; 220a, rotating plate; 220b, fixed plate; 220c, hanging rod; 220d, rotating shaft; 220e, fourth spring; 220f, fixed groove; 220g, rotating groove; 220h, movable plate; 300, control mechanism; 301, collection box; 310, control component; 320, feeding component; 301a, first chamber; 301b, second chamber; 301c, through slot; 301d, sliding groove; 301e, movable groove; 310a, baffle; 310b, pressing plate; 310c, connecting plate; 310d, protective plate; 310e, fifth spring; 310f, inclined plate; 320a, sliding rod; 320b, joint; 320c, pushing plate; 320d, electronic scale; 320e, air compressor; 320f, second side plate; 320g, convex plate. Detailed implementation manner

[0034] 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 creative efforts shall fall within the protection scope of the present invention.

[0035] Embodiment 1

[0036] Please refer to Figures 1 - 10, A performance detection device for the lifting capacity limiter of a tower crane in the figure, including a detection mechanism 100, which includes a box body 101. A steel rope assembly 110 is arranged in the box body 101. A placing assembly 120 is arranged on the steel rope assembly 110. A pressing assembly 130 is arranged on the placing assembly 120. A movable assembly 140 is arranged on the placing assembly 120. A door panel 102 is arranged on the box body 101. A lifting capacity limiter 103 is fixedly connected to the steel rope assembly 110;

[0037] A discharging mechanism 200, including a pressing block 201, which is fixedly connected to one side of the inner cavity of the box body 101. A lifting assembly 210 is arranged on one side of the inner cavity of the box body 101. A switch assembly 220 is arranged on the lifting assembly 210;

[0038] A control mechanism 300, including a collection box 301, which is located at the bottom of the inner cavity of the box body 101. A control component 310 is arranged on one side of the collection box 301. A discharging component 320 is arranged in the inner cavity of the collection box 301.

[0039] In this embodiment, the specific use process is as follows: By fixing the lifting capacity limiter 103 on the steel rope assembly 110, the iron sand in the collection box 301 is initially collected by the discharging component 320 and its weight is detected. When the lifting assembly 210 moves downward, it can contact the control component 310 and make the control component 310 drive the discharging component 320 to work, so that all the iron sand collected by the discharging component 320 moves into the lifting assembly 210; When the lifting assembly 210 rises to the top, the pressing block 201 contacts the switch assembly 220, making the switch assembly 220 open, and all the iron sand in the lifting assembly 210 is placed into the placing assembly 120. By adding iron sand to the placing assembly 120 multiple times, different values can be displayed on the lifting capacity limiter 103. The weight of the iron sand during the initial collection can be compared with the value displayed by the lifting capacity limiter 103 in the placing assembly 120, so as to detect whether the value of the lifting capacity limiter 103 has an error due to excessive overload times of lifting goods or improper operation, thereby avoiding the situation that when using the tower crane, due to the error of the value of the lifting capacity limiter 103, the goods are overweight and the goods fall; Further, when the detection is completed, after the steel rope assembly 110 drives the placing assembly 120 to move downward to a certain position, the pressing assembly 130 presses the movable assembly 140, which can release the fixation of the movable assembly 140 on the placing assembly 120, so that the movable assembly 140 can move, and then the two sides of the placing assembly 120 can be opened, facilitating the discharge of the iron sand from the placing assembly 120 and making it re-enter the collection box 301 for subsequent detection use; In addition, by using iron sand for detection, it can be avoided that when directly using weights for detection, the weights are damaged due to dropping and bumping, resulting in inaccurate detection and affecting the detection results.

[0040] Example 2

[0041] Please refer to Figures 1 - 3 , a display screen 101a is provided on the outer side of the box body 101, a controller 101b is provided on the outer side of the box body 101, connecting blocks 101c are fixedly connected to both sides of the inner cavity of the box body 101, a storage box 101d is provided in the inner cavity of the box body 101, a lifting groove 101e is provided on one side of the inner cavity of the box body 101, and a return material groove 101f is provided on the connecting block 101c; a transparent partition 102a is provided on the door panel 102.

[0042] Please refer to Figures 2 - 4 , the steel rope assembly 110 includes a first motor 110a, a first bevel gear 110b, a second bevel gear 110c, a rotating roller 110d, a steel rope 110e and an auxiliary rope 110f. The first bevel gear 110b is fixedly connected to the power output end of the first motor 110a, the second bevel gear 110c is fixedly connected to the rotating roller 110d, the rotating roller 110d is rotatably connected in the storage box 101d, the first bevel gear 110b meshes with the second bevel gear 110c, one end of the steel rope 110e is located on the rotating roller 110d, the other end of the steel rope 110e is fixedly connected to the top of the inner cavity of the box body 101, one end of the auxiliary rope 110f is fixedly connected to the steel rope 110e, and the other end of the auxiliary rope 110f is fixedly connected to one side of the inner cavity of the box body 101.

[0043] Please refer to Figures 2 - 4 , Figure 7 and Figure 8 , the placing assembly 120 includes a placing box 120a, a lifting plate 120b, a first spring 120c and a control plate 120d. The placing box 120a is located on the steel rope 110e, control grooves 120e are provided on both sides of the placing box 120a, the control plate 120d is fixedly connected to the lifting plate 120b, one end of the first spring 120c is fixedly connected to the inner wall of the control groove 120e, the other end of the first spring 120c is fixedly connected to the top of the lifting plate 120b, and a top plate 120f is fixedly connected to the top of the placing box 120a.

[0044] Please refer to Figure 7 and Figure 10 , the pressing assembly 130 includes a wedge block 130a, a first side plate 130b and a second spring 130c. Pressing grooves 130d are provided on both sides of the placing box 120a, the first side plate 130b is fixedly connected to the wedge block 130a, one end of the second spring 130c is fixedly connected to the first side plate 130b, and the other end of the second spring 130c is fixedly connected to the pressing groove 130d.

[0045] Please refer to Figure 7 and Figure 8, the movable component 140 includes a fixed block 140a, a limiting plate 140b and a third spring 140c. A positioning groove 140d is provided on the lifting plate 120b. The fixed block 140a is fixedly connected to one side of the limiting plate 140b. One end of the third spring 140c is fixedly connected to the limiting plate 140b, and the other end of the third spring 140c is fixedly connected to the inner wall of the positioning groove 140d.

[0046] In this embodiment, when performance detection of the lifting weight limiter 103 is required, iron sand needs to be placed into the placement box 120a. Therefore, the first motor 110a needs to work to drive the steel rope 110e to lift the placement box 120a to a certain position. Then, through the switch assembly 220, the iron sand with a certain weight that has been detected is discharged from the lifting assembly 210 into the placement assembly 120, and the top plate 120f is used to limit the switch assembly 220, so that the iron sand in the lifting assembly 210 can completely enter the placement box 120a, so that the lifting weight limiter 103 can display the weight value of the iron sand. In addition, the first motor 110a can work to drive the rotating roller 110d to rotate, drive the steel rope 110e to wind up, and thus drive the placement box 120a to lift and lower, and the weight value of the lifting weight limiter 103 during the lifting and lowering of the goods can be displayed, which is convenient for data collection of the lifting weight limiter 103. Further, the performance of the lifting weight limiter 103 can be detected by adding iron sand to the placement box 120a multiple times, and the values displayed by the lifting weight limiter 103 under different weights of iron sand are collected, so that the data collected and displayed by the performance detection device for the lifting weight limiter 103 is richer and more perfect, and further improves the reliability of the device for performance detection of the lifting weight limiter 103;

[0047] After the performance detection of the lifting weight limiter 103 is completed, the first motor 110a works to drive the rotating roller 110d to rotate, so that the steel rope 110e drives the placement box 120a to descend, so that the wedge block 130a on the placement box 120a contacts the connecting block 101c, and the wedge block 130a can move in the pressing groove 130d. Thus, the wedge block 130a presses the fixed block 140a so that the fixed block 140a contracts into the positioning groove 140d, and further the control plate 120d contacts the connecting block 101c. When the steel rope 110e drives the placement box 120a to continue to descend, since the self - weight of the placement box 120a is greater than the acting force of the first spring 120c, the control plate 120d will drive the lifting plate 120b to rise, so that both sides of the placement box 120a open. Further, since the bottom of the inner cavity of the placement box 120a is provided with an inclined groove, it is convenient for the iron sand in the placement box 120a to be completely discharged, so that the discharged iron sand is recovered into the first chamber 301a of the collection box 301 through the through - groove 301c, which is convenient for subsequent performance detection of other lifting weight limiters 103;

[0048] Through the display screen 101a, the value of the weighing of iron sand by the electronic scale 320d and the data on the lifting weight limiter 103 can be displayed and compared, which is convenient for the staff to observe during the performance detection of the lifting weight limiter 103, and to avoid too many overloading times or improper operations when using the lifting weight limiter to lift goods on the tower crane, resulting in inaccurate values and errors of the lifting weight limiter 103, which has an adverse impact on the conveying of goods lifted by the tower crane.

[0049] Embodiment 3

[0050] Please refer to Figures 2 - 4 and Figure 9 As shown in and, the lifting assembly 210 includes a second motor 210a, a lead screw 210b and a placement box 210c. The second motor 210a is fixedly connected to the lead screw 210b. The placement box 210c is threadedly connected to the lead screw 210b. The lead screw 210b is located in the lifting groove 101e. A connection groove 210d is provided on the placement box 210c. A fixed roller 210e is fixedly connected to the bottom of the placement box 210c.

[0051] Please refer to Figure 3 and Figure 9 As shown in and, the switch assembly 220 includes a rotating plate 220a, a fixing plate 220b, a hanging rod 220c, a rotating shaft 220d and a fourth spring 220e. The fixing plate 220b is fixedly connected to the rotating plate 220a. A fixing groove 220f is provided on the fixing plate 220b. The rotating shaft 220d is fixedly connected to the hanging rod 220c. The rotating shaft 220d is rotatably connected to a circular groove on the side wall of the connection groove 210d. One end of the fourth spring 220e is fixedly connected to one end of the hanging rod 220c. The other end of the fourth spring 220e is fixedly connected to the inner wall of the connection groove 210d. A rotating groove 220g is fixedly connected to the bottom of the rotating plate 220a. The fixed roller 210e is rotatably connected to the rotating groove 220g. A movable plate 220h is fixedly connected to the fixing plate 220b.

[0052] In this embodiment, when the load limiter 103 is detected using the performance detection device, iron sand needs to be placed in the placement box 120a. Therefore, by operating the first motor 110a, the rotating roller 110d rotates, and the steel rope 110e drives the placement box 120a to lift. After the placement box 120a reaches a certain position, by operating the second motor 210a forward, the lead screw 210b rotates forward, driving the placement box 210c to descend, so that the bottom of the placement box 210c contacts the control component 310. Then, through the feeding component 320, the weighed iron sand is completely pushed into the placement box 210c, enabling the performance detection device to detect whether the value displayed in the load limiter 103 is in error due to excessive overload times of the lifted goods or improper operation. Further, when all the iron sand in the feeding component 320 is loaded into the placement box 210c, by operating the second motor 210c in reverse, the lead screw 210b rotates in reverse, driving the placement box 210c to rise;

[0053] When the placement box 210c rises to the highest position, it causes the pressing block 201 to contact and press one end of the hanging rod 220c, enabling the hanging rod 220c to rotate through the rotating shaft 220d, so that the other end of the hanging rod 220c separates from the fixing groove 220f. Thus, the rotating plate 220a can rotate, and the rotating plate 220a contacts one side of the placement box 120a, allowing the iron sand to be poured into the placement box 120a. Further, since the bottom of the inner cavity of the placement box 210c is provided with an inclined surface, when the rotating plate 220a rotates to open one side of the placement box 210c, the iron sand in the placement box 210c can be completely poured into the placement box 120a, thereby detecting the load limiter 103. At the same time, through the top plate 120f of the placement box 120a, the two sides of the rotating plate 220a can be limited, and the iron sand can be limited by the fixed plates 220b and the movable plates 220h on both sides of the rotating plate 220d. When the rotating plate 220d pours the iron sand into the placement box 120a, the iron sand can be protected, enabling the iron sand to completely enter the placement box 120a and preventing the iron sand from spilling out from both sides of the rotating plate 220a, which may cause errors in the detection and affect the normal use of the device;

[0054] When the iron sand in the placement box 210c is completely discharged, by rotating the second motor 210a forward to rotate the lead screw 210b and drive the placement box 210c to move downward, the rotating plate 220a will rotate towards the placement box 210c, causing the fixed plate 220b to gradually contract into the connecting groove 210d. The other end of the hanging rod 220c can be fixed back into the fixing groove 220f, so that the fixed plate 220b is fixed in the placement box 210c through the hook on the hanging rod 220c. Thus, the rotating plate 220a can be reattached to the placement box 210c, enabling the device to add iron sand back into the inner cavity of the placement box 210c, and facilitating the placement box 210c to transport iron sand multiple times.

[0055] Embodiment 4

[0056] Please refer to Figures 3 - 5 , a first chamber 301a is provided in the collection box 301, a second chamber 301b is provided in the collection box 301, a through groove 301c is provided on the first chamber 301a, a sliding groove 301d is provided at the top of the second chamber 301b, and a movable groove 301e is provided on one side of the second chamber 301b.

[0057] Please refer to Figures 4 - 6 , the control assembly 310 includes a baffle 310a, a pressing plate 310b, a connecting plate 310c, a protective plate 310d and a fifth spring 310e. The pressing plate 310b is fixedly connected to the baffle 310a, the connecting plate 310c is fixedly connected to both sides of the baffle 310a, the protective plate 310d is fixedly connected to the connecting plate 310c, one end of the fifth spring 310e is fixedly connected to the connecting plate 310c, the other end of the fifth spring 310e is fixedly connected to the inner wall of the movable groove 301e, the baffle 310a is slidably connected in the movable groove 301e, and an inclined plate 310f is fixedly connected to the baffle 310a.

[0058] Please refer to Figures 4 - 6, the feeding assembly 320 includes a slide bar 320a, a joint 320b, a push plate 320c, an electronic scale 320d, an air compressor 320e and a second side plate 320f. The slide bar 320a is fixedly connected to the chute 301d. The push plate 320c is slidably connected to the slide bar 320a. One end of the joint 320b is rotatably connected to the convex posts on both sides of the connecting plate 310c, and the other end of the joint 320b is rotatably connected to the convex posts on both sides of the push plate 320c. The air compressor 320e is fixedly connected to the side wall of the second chamber 301b. The electronic scale 320d is fixedly connected to the second chamber 301b. The second side plate 320f is fixedly connected to the electronic scale 320d. One side pipeline of the air compressor 320e is located in the first chamber 301a, and the other side pipeline of the air compressor 320e is located above the electronic scale 320d. The other side pipeline of the air compressor 320e is slidably connected to the hole on the push plate 320c. A convex plate 320g is fixedly connected to one side of the push plate 320c.

[0059] In this embodiment, when the performance detection device needs to detect the lifting weight limiter 103, by operating the air compressor 320e, the iron sand in the first chamber 301a can be pumped onto the electronic scale 320d in the second chamber 301b for detection and weighing, and at the same time, the weighing result is transmitted to the display screen for data collection; further, since the other side pipeline of the air compressor 320e is in the round groove on the push plate 320c, when the iron sand is pumped by the air compressor 320e and discharged into the second chamber 301b through the other side pipeline, due to the inclined groove provided on the convex plate 320g of the push plate 320c, the iron sand can slide down from the inclined groove onto the electronic scale 320d, reducing the impact force of the iron sand on the electronic scale 320d; through the second side plate 320f, both sides of the electronic scale 320d can be shielded to prevent the iron sand from falling out from both sides of the electronic scale 320d; further, through the baffle 310a and the push plate 320c, the other two sides of the electronic scale 320d are protected to prevent the iron sand from falling from the other two sides; when the iron sand falls onto the electronic scale 320d, the electronic scale 320d detects and weighs the iron sand on the weighing pan, and transmits the weighing result to the display screen 101a for data collection and storage, facilitating the detection of the performance of the lifting weight limiter 103;

[0060] When the second motor 210a operates forward, the lead screw 210b rotates forward, driving the placement box 210c to descend, so that the bottom of the placement box 210c contacts the control component 310. When the bottom of the placement box 210c contacts the pressing plate 310b on the control component 310, since the lead screw 210b rotates forward and drives the placement box 210c to move downward, the pressing plate 310b will drive the baffle 310a to move downward, thereby opening the second chamber 301b; when the baffle 310a moves downward, it will drive the connecting plate 310c to move downward, causing the joint 320b on the connecting plate 310c to move, driving the push plate 320c rotatably connected to the joint 320b to move, and compressing the fifth spring 310e. At the same time, since the slide bar 320a is fixed on the chute 301d, the push plate 320c is restricted by the slide bar 320a and moves horizontally on the electronic scale 320d. Through the push plate 320c and the convex plate 320g, the weighed iron sand on the electronic scale 320d can be pushed into the placement box 210c, so that the iron sand can be collected; further, since the height of the placement box 210c is less than the height of the baffle 310a, when the bottom of the placement box 210c contacts the pressing plate 310b, the top of the rotating plate 320a on the placement box 210c is slightly lower than the inclined plate 310f on the baffle 310a, which is convenient for the push plate 320c and the convex plate 320g to push the iron sand into the placement box 210c; when the placement box 210c drives the baffle 310a to move downward to the lowest point, the push plate 320c is driven to move through the joint 320b. Since one side of the electronic scale 320d is attached to the other side of the baffle 310a, the convex plate 320g on the push plate 320c can move to the baffle 310a. At the same time, since the top of the rotating plate 220a is provided with an inclined groove, the top of the baffle 310a is provided with an inclined groove and the baffle 310a is fixedly connected with an inclined plate 310f, the iron sand can slide from the baffle 310a and the inclined plate 310f into the placement box 210f, which is convenient for completely collecting the iron sand into the placement box 210f for transportation; further, since the rotating plate 220a is wider than the baffle 310a, the iron sand can be completely pushed into the placement box 210c, and then the iron sand can be poured into the placement box 120a through the lifting component 210, avoiding the iron sand falling from the side of the rotating plate 220a and affecting the detection work of the device;

[0061] When the iron sand is loaded into the placement box 210c, the second motor 210a works in reverse, causing the lead screw 210b to rotate in reverse, driving the placement box 210c to rise, continuously moving the placement box 210c upward, separating the placement box 210c from the pressing plate 310b. Thus, under the action of the fifth spring 310e, the baffle 310a rises in the movable groove 301e, enabling the baffle 310a to seal the second chamber 301b in the collection box 301, facilitating the preliminary collection and weighing of the iron sand during subsequent multiple performance tests. Since the return chute 101f on the connecting block 101c is connected to the through groove 301c, after the performance test of the load limiter 103 is completed, by lowering the placement assembly 120, the iron sand is moved to the return chute 101f, the lifting plate 120b is opened, and the iron sand is discharged from the placement box 120a, enabling the iron sand to enter the through groove 301c through the return chute 101f. Thus, the iron sand can enter the first chamber 301a through the through groove 301c for centralized collection, facilitating the subsequent performance test of the load limiter 103 by the device.

[0062] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0063] Although embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A performance detection device for the load limiter of a tower crane, characterized in that, Comprising: A detection mechanism (100), including a box body (101), a steel rope assembly (110) is arranged in the box body (101), a placement assembly (120) is arranged on the steel rope assembly (110), a pressing assembly (130) is arranged on the placement assembly (120), a movable assembly (140) is arranged on the placement assembly (120), a door panel (102) is arranged on the box body (101), and a load limiter (103) is fixedly connected to the steel rope assembly (110); A tipping mechanism (200), including a pressing block (201), the pressing block (201) is fixedly connected to one side of the inner cavity of the box body (101), a lifting assembly (210) is arranged on one side of the inner cavity of the box body (101), and a switch assembly (220) is arranged on the lifting assembly (210); A control mechanism (300), including a collection box (301), the collection box (301) is located at the bottom of the inner cavity of the box body (101), a control assembly (310) is arranged on one side of the collection box (301), and a discharging assembly (320) is arranged in the inner cavity of the collection box (301).

2. The performance detection device for the load limiter of a tower crane according to claim 1, characterized in that, A display screen (101a) is arranged on the outer side of the box body (101), a controller (101b) is arranged on the outer side of the box body (101), connecting blocks (101c) are fixedly connected to both sides of the inner cavity of the box body (101), a storage box (101d) is arranged in the inner cavity of the box body (101), a lifting groove (101e) is arranged on one side of the inner cavity of the box body (101), and a return material groove (101f) is arranged on the connecting block (101c); A transparent partition (102a) is arranged on the door panel (102).

3. The performance detection device for the lifting weight limiter of a tower crane according to claim 2, characterized in that, The steel rope assembly (110) includes a first motor (110a), a first bevel gear (110b), a second bevel gear (110c), a rotating roller (110d), a steel rope (110e) and an auxiliary rope (110f), the first bevel gear (110b) is fixedly connected to the power output end of the first motor (110a), the second bevel gear (110c) is fixedly connected to the rotating roller (110d), the rotating roller (110d) is rotatably connected in the storage box (101d), the first bevel gear (110b) meshes with the second bevel gear (110c), one end of the steel rope (110e) is located on the rotating roller (110d), the other end of the steel rope (110e) is fixedly connected to the top of the inner cavity of the box body (101), one end of the auxiliary rope (110f) is fixedly connected to the steel rope (110e), and the other end of the auxiliary rope (110f) is fixedly connected to one side of the inner cavity of the box body (101).

4. A performance detection device for the load limiter of a tower crane according to claim 3, characterized in that, The placement component (120) includes a placement box (120a), a lifting plate (120b), a first spring (120c), and a control plate (120d). The placement box (120a) is located on the steel rope (110e). Control grooves (120e) are provided on both sides of the placement box (120a). The control plate (120d) is fixedly connected to the lifting plate (120b). One end of the first spring (120c) is fixedly connected to the inner wall of the control groove (120e), and the other end of the first spring (120c) is fixedly connected to the top of the lifting plate (120b). A top plate (120f) is fixedly connected to the top of the placement box (120a).

5. The performance detection device for the lifting capacity limiter of a tower crane according to claim 4, characterized in that, The pressing component (130) includes a wedge block (130a), a first side plate (130b), and a second spring (130c). Pressing grooves (130d) are provided on both sides of the placement box (120a). The first side plate (130b) is fixedly connected to the wedge block (130a). One end of the second spring (130c) is fixedly connected to the first side plate (130b), and the other end of the second spring (130c) is fixedly connected to the pressing groove (130d).

6. The performance detection device for the load limiter of a tower crane according to claim 4, wherein, The movable component (140) includes a fixed block (140a), a limiting plate (140b), and a third spring (140c). A positioning groove (140d) is provided on the lifting plate (120b). The fixed block (140a) is fixedly connected to one side of the limiting plate (140b). One end of the third spring (140c) is fixedly connected to the limiting plate (140b), and the other end of the third spring (140c) is fixedly connected to the inner wall of the positioning groove (140d).

7. A performance detection device for the load limiter of a tower crane according to claim 2, characterized in that, The lifting component (210) includes a second motor (210a), a lead screw (210b), and a placement box (210c). The second motor (210a) is fixedly connected to the lead screw (210b). The placement box (210c) is threadedly connected to the lead screw (210b). The lead screw (210b) is rotatably connected in the lifting groove (101e). Connecting grooves (210d) are provided on both sides of the placement box (210c). A fixed roller (210e) is fixedly connected to the bottom of the placement box (210c); The switch assembly (220) includes a rotating plate (220a), a fixing plate (220b), a hanging rod (220c), a rotating shaft (220d) and a fourth spring (220e). The fixing plate (220b) is fixedly connected to the rotating plate (220a). A fixing groove (220f) is provided on the fixing plate (220b). The rotating shaft (220d) is fixedly connected to the hanging rod (220c). The rotating shaft (220d) is rotatably connected to a circular groove on the side wall of the connecting groove (210d). One end of the fourth spring (220e) is fixedly connected to one end of the hanging rod (220c), and the other end of the fourth spring (220e) is fixedly connected to the inner wall of the connecting groove (210d). A rotating groove (220g) is fixedly connected to the bottom of the rotating plate (220a). The fixed roller (210e) is rotatably connected to the rotating groove (220g). An active plate (220h) is fixedly connected to the fixing plate (220b).

8. A performance detection device for the lifting weight limiter of a tower crane according to claim 1, characterized in that, A first chamber (301a) is provided in the collection box (301). A second chamber (301b) is provided in the collection box (301). A through groove (301c) is provided on the first chamber (301a). A sliding groove (301d) is provided at the top of the second chamber (301b). An active groove (301e) is provided on one side of the second chamber (301b).

9. The performance detection device for the lifting capacity limiter of a tower crane according to claim 8, characterized in that, The control assembly (310) includes a baffle plate (310a), a pressing plate (310b), a connecting plate (310c), a protective plate (310d) and a fifth spring (310e). The pressing plate (310b) is fixedly connected to the baffle plate (310a). The connecting plate (310c) is fixedly connected to both sides of the baffle plate (310a). The protective plate (310d) is fixedly connected to the connecting plate (310c). One end of the fifth spring (310e) is fixedly connected to the connecting plate (310c), and the other end of the fifth spring (310e) is fixedly connected to the inner wall of the active groove (301e). The baffle plate (310a) is slidably connected to the active groove (301e). An inclined plate (310f) is fixedly connected to the baffle plate (310a).

10. The performance detection device for the load limiter of a tower crane according to claim 9, characterized in that, The feeding component (320) includes a slide bar (320a), a joint (320b), a push plate (320c), an electronic scale (320d), an air compressor (320e) and a second side plate (320f). The slide bar (320a) is fixedly connected to the chute (301d). The push plate (320c) is slidably connected to the slide bar (320a). One end of the joint (320b) is rotatably connected to the convex columns on both sides of the connecting plate (310c), and the other end of the joint (320b) is rotatably connected to the convex columns on both sides of the push plate (320c). The air compressor (320e) is fixedly connected to the side wall of the second chamber (301b). The electronic scale (320d) is fixedly connected to the second chamber (301b). The second side plate (320f) is fixedly connected to the electronic scale (320d). One side pipeline of the air compressor (320e) is located in the first chamber (301a), and the other side pipeline of the air compressor (320e) is located above the electronic scale (320d). The other side pipeline of the air compressor (320e) is slidably connected to the hole in the push plate (320c). A convex plate (320g) is fixedly connected to one side of the push plate (320c).

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