Integrated weight quality detection mechanical device
By designing an integrated mechanical device for measuring the quality of weights, employing the overflow method and siphon drainage effect to measure the volume of weights, and combining it with a stepper motor-driven clamping assembly, the problem of accuracy in measuring the volume and density of weights was solved, achieving efficient and accurate quality testing.
Patent Information
- Application Number
- CN202511463038.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-14
- Publication Date
- 2026-01-20
AI Technical Summary
Existing weight mass testing devices cannot accurately measure the volume and density of weights, leading to buoyancy correction errors and affecting the mass testing results. This is especially true for weights of different models and sizes, which increases the difficulty of measurement.
An integrated mechanical device for measuring the quality of weights was designed, comprising a density detection component and a weight clamping component. The volume of the weights is measured using the overflow method, and the measurement accuracy is ensured by the siphon drainage effect. The weight clamping component driven by a stepper motor avoids liquid contamination from affecting the measurement.
It enables the measurement of mass and density of different types of weights, reduces the difficulty of measurement, ensures the accuracy and reliability of measurement data, and avoids errors caused by liquid contamination.
Smart Images
Figure CN121364002A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of weight quality detection devices, in particular to an integrated weight quality detection mechanical device. BACKGROUND
[0002] Weight quality detection is a key link to ensure the accuracy of weight value and meet the measurement standards, and is widely used in industrial production, laboratory calibration, trade settlement and other fields. The detection needs to follow national standards or international measurement specifications. The core is to verify whether the deviation between the actual weight and the nominal weight of the weight is within the allowable range through professional equipment and processes. Weight quality detection is not only to measure the weight, but also to ensure the accuracy of the value through multi-dimensional verification. The core projects include appearance inspection, weight deviation detection and stability detection. Some high-grade weights need to be additionally detected in volume / density for air buoyancy correction. The existing weight quality detection device has certain drawbacks. The quality detection module is designed based on the principle of high-precision electronic balance. The quality detection is compared with the standard weight and the detected weight, and is realized by relying on the calibrated balance / comparator. The quality detection of the weight is far from meeting the requirements of high-grade weights. When detecting the density of the weight, the volume of the weight needs to be measured. The quality detection of high-grade weights must be corrected for air buoyancy. The premise of correction is to accurately measure the volume or density of the weight. However, the electronic balance cannot measure the volume or density of the weight, resulting in buoyancy correction error, which further affects the final quality result. Especially for different types of weights or different sizes of weights, it increases the difficulty of measuring the volume of the weight. SUMMARY
[0003] The purpose of the present application is to provide an integrated weight quality detection mechanical device to solve the problems in the background art.
[0004] The purpose of the present application can be achieved by the following technical solutions: The integrated type weight quality detection mechanical device, which comprises a fixed frame, a weighing sensor and a placing table, the placing table is arranged at the top of the fixed frame, and the weighing sensor is arranged between the fixed frame and the placing table, a weight body is arranged in the middle of the surface of the placing table, a density detection assembly is arranged in the middle of the surface of the placing table, the density detection assembly comprises a first water container and a second water container, the second water container contains liquid, a first connecting rod is welded between the first water container and the second water container, two connecting pipes are arranged on the side wall of the second water container, one end of the connecting pipe is aligned with the liquid surface of the second water container, the other end of the connecting pipe is located in the inner bottom of the first water container, the two ends of the connecting pipe form a height difference, a lifting piece is arranged in the liquid of the second water container, the edge of the lifting piece is slidably connected with the inner wall of the second water container, the connecting pipe is used for conveying the liquid in the second water container to the inside of the first water container, the weight body is completely immersed in the liquid of the second water container, and the volume of the liquid flowing into the first water container is equal to the volume of the weight body.
[0005] As a preferred technical scheme of the present application, the weight body is coated with a layer of plastic film, and the plastic film is completely attached to the side wall of the weight body, and the outer wall surface of the weight body is coated with a waterproof protective layer of mineral oil or paint.
[0006] As a preferred technical scheme of the present application, the side wall of the first water container is provided with a first scale line, the first scale line is used for measuring the volume of the liquid flowing into the first water container, and the side wall of the second water container is provided with a second scale line, the second scale line is used to ensure that the liquid in the second water container is always flush with the liquid before the weight body is placed.
[0007] As a preferred technical scheme of the present application, the side wall of the placing table is provided with a weight clamping assembly, the weight clamping assembly comprises a first fixed block, the first fixed block is welded to the side wall of the placing table, two second connecting rods are arranged in the first fixed block, square rods are arranged in the two second connecting rods, the square rods and the second connecting rods rotate synchronously, straight gears are arranged at the outer ends of the two square rods, the two straight gears are meshed with each other, a stepping motor is arranged below the first fixed block, the output end of the stepping motor is connected with one of the square rods, second fixed blocks are arranged at the ends of the two second connecting rods, a crankshaft assembly, a connecting sleeve and clamping rods are arranged in the second fixed blocks, one end of the clamping rod is connected with the crankshaft assembly, the middle of the clamping rod is slidably connected with the connecting sleeve, clamping grooves are arranged at the ends of the two clamping rods, and the clamping grooves of the two clamping rods are used for clamping the weight body.
[0008] As a preferred technical scheme of the present application, the output end of the stepper motor reciprocates, a square groove is formed in the second connecting rod, the square groove of the second connecting rod is adapted to the square rod in cross section, the second connecting rod is movably connected with the square rod, the two second connecting rods are synchronously up and down floating, and the lifting height of the second connecting rod is greater than the height of the weight.
[0009] As a preferred technical scheme of the present application, a fixing pin is threadedly connected to the outer wall of the second connecting rod, a spiral groove is formed in the inner portion of the first fixing block and located at the two second connecting rods, the number of turns of the spiral groove is half, the spiral grooves of the two second connecting rods are arranged in axial symmetry, the spiral groove is slidably connected with the fixing pin, and the two straight gears rotate in opposite directions.
[0010] As a preferred technical scheme of the present application, the crankshaft assembly comprises a first connecting plate and a second connecting plate, the end of the second connecting rod is welded to the axis of the second connecting plate, the first connecting plate and the second connecting plate are welded with a crank main body, and the end of the clamping rod is movably connected to the outer portion of the crank main body.
[0011] As a preferred technical scheme of the present application, the end of the second connecting rod is rotatably connected to the second fixing block, the axis of the first connecting plate is rotatably connected to the second fixing block, the rotation angle range of the output shaft of the stepper motor is -90°-90°, the two connecting sleeves swing around their respective axes, a sliding groove is formed in the inner portion of each connecting sleeve, and the inner portion of the sliding groove is slidably connected with the middle of the clamping rod.
[0012] As a preferred technical scheme of the present application, when the two fixing pins are located at the bottom end of the spiral groove, the two crank main bodies are close to each other, the clamping grooves of the two clamping rods are separated from each other, and the weight body is separated from the clamping grooves of the two clamping rods.
[0013] As a preferred technical scheme of the present application, when the two fixing pins are located at the top end of the spiral groove, the two crank main bodies are away from each other, the clamping grooves of the two clamping rods are close to each other, and the weight body is clamped by the clamping grooves of the two clamping rods.
[0014] Compared with the prior art, the present application has the following advantages: The density detection assembly is provided, the volume of the weight body can be measured by the overflow method to immerse the weight body in the second water container, the volume of the weight can be measured, the port position of the connecting pipe can be adjusted according to the mass or height of the weight body, the mass and density of different types of weight bodies can be measured, the siphon drainage effect can ensure that the volume of the discharged liquid is the same as that of the weight body, the difficulty of weight detection is reduced, and the liquid adhering to the side wall of the second water container can be avoided to affect the measurement data. The weight clamping assembly is arranged, the two crank assemblies are driven to rotate by the stepping motor, the two clamping rods are close to or away from each other, the clamping rods can clamp or release the weight body, and the hand is prevented from being stained with liquid or the side wall of the container is prevented from being stained with liquid, so that the error of measuring the mass or density of the weight body is avoided. By cooperation of the spiral groove and the fixing pin, the fixing pin slides in the spiral groove, so that the two clamping rods are lowered when the weight body is just clamped, and the weight body is released into the second water container. BRIEF DESCRIPTION OF DRAWINGS
[0015] In order to facilitate the understanding of those skilled in the art, the present application is further described below in combination with the drawings.
[0016] Figure 1 The main structure of the present application is shown in the figure. Figure 2 The placement table and the weight body of the present application are shown in the figure. Figure 3 The weight body of the present application is shown in the figure. Figure 4 The spiral groove and the second fixing block of the present application are shown in the figure. Figure 5 The straight gear, the square rod and the second connecting rod of the present application are shown in the figure. Figure 6 The spiral groove and the fixing pin of the present application are shown in the figure. Figure 7 The square rod and the second connecting rod of the present application are shown in the figure. Figure 8 The clamping rod and the clamping groove of the present application are shown in the figure. Figure 9 The connecting sleeve and the sliding groove of the present application are shown in the figure. Figure 10 The crank assembly of the present application is shown in the figure.
[0017] In the figure: 1, fixed frame; 2, weighing sensor; 3, placement table; 4, density detection assembly; 5, weight body; 6, weight clamping assembly; 41, first water container; 42, second water container; 43, connecting pipe; 44, first scale line; 45, lifting piece; 46, first connecting rod; 47, second scale line; 61, first fixing block; 62, stepping motor; 63, straight gear; 64, square rod; 65, second connecting rod; 66, spiral groove; 67, second fixing block; 68, clamping rod; 69, clamping groove; 610, fixing pin; 611, crank assembly; 612, connecting sleeve; 613, sliding groove; 6111, first connecting plate; 6112, second connecting plate; 6113, crank body. DETAILED DESCRIPTION
[0018] The technical solutions of the present application will be described clearly and completely below in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those of ordinary skill in the art without any creative work, fall within the protection scope of the present application. Embodiment one:
[0019] Please refer to Figure 1 - Figure 4As shown, the integrated type weight quality detection mechanical device, including fixed frame 1, weighing sensor 2 and placement platform 3, placement platform 3 is arranged at the top of fixed frame 1, and weighing sensor 2 is arranged between fixed frame 1 and placement platform 3, the surface of placement platform 3 is provided with weight body 5, the weight body 5 is placed on the surface of placement platform 3, the weight body 5 on the surface of placement platform 3 is weighed by weighing sensor 2, the surface of placement platform 3 is provided with density detection assembly 4, density detection assembly 4 includes first water container 41 and second water container 42, the inside of second water container 42 contains liquid, first water container 41 and second water container 42 are welded with first connecting rod 46, first water container 41 and second water container 42 are fixed by first connecting rod 46, the liquid overflowed from second water container 42 flows into the inside of first water container 41, the side wall of second water container 42 is provided with two connecting pipes 43, the inside of two connecting pipes 43 is full of liquid, one end of connecting pipe 43 is located in the liquid surface of second water container 42, the other end of connecting pipe 43 is located in the inside bottom of first water container 41, the two ends of connecting pipe 43 form height difference, at this time, first water container 41, second water container 42 and two connecting pipes 43 form siphon drainage effect, the inside of second water container 42 and located in the liquid inside is provided with lifting piece 45, the edge of lifting piece 45 is slidingly connected with the inner wall of second water container 42, weight body 5 is placed on the surface of lifting piece 45 so that lifting piece 45 is lifted along the vertical direction, and weight body 5 is completely immersed in the liquid below connecting pipe 43, connecting pipe 43 is used for conveying the liquid in second water container 42 to the inside of first water container 41, weight body 5 is completely immersed in the inside of the liquid of second water container 42, the volume of the liquid flowing into the inside of first water container 41 is equal to the volume of weight body 5, because the liquid in the inside of second water container 42 and the liquid in the inside of connecting pipe 43 can produce siphon drainage effect, so that when weight body 5 is put into lifting piece 45, the liquid can flow from the inside of second water container 42 to first water container 41, ensure that the liquid height does not change after weight body 5 is put into the inside of second water container 42, ensure that the liquid overflowed from second water container 42 is the same volume as weight body 5, the density of weight body 5 can be known by the mass difference before and after placing weight body 5 and the volume of the liquid flowing out.
[0020] Please refer to Figure 3 and Figure 4As shown, the outer wall of the weight body 5 is coated with a layer of plastic film, and the plastic film is completely attached to the side wall of the weight body 5. The outer wall surface of the weight body 5 is coated with mineral oil or paint for waterproof protection. The complete attachment of the plastic film to the side wall of the weight body 5 can prevent liquid from entering the inside of the plastic film, avoid damage or rust on the outside of the weight, and ensure that the volume of the liquid flowing out of the second water container 42 is the same as the volume of the weight body 5.
[0021] As shown in Figure 3 and Figure 4 As shown, the side wall of the first water container 41 is provided with a first scale line 44 for measuring the volume of the liquid flowing into the first water container 41. The side wall of the second water container 42 is provided with a second scale line 47 to ensure that the liquid inside the second water container 42 is always level with the liquid before the weight body 5 is placed. When the weight body 5 is completely submerged in the second water container 42, the liquid flows from the second water container 42 into the first water container 41 through the connecting pipe 43. The second scale line 47 can ensure that the liquid level does not change after the weight body 5 is completely placed in the second water container 42. The volume of the liquid flowing into the first water container 41 can be read by the first scale line 44, ensuring that the volume of the liquid flowing into the first water container 41 is the same as the volume of the liquid flowing out of the second water container 42.
[0022] It should be noted that the weight body 5 is placed on the surface of the placement table 3, and the weighing sensor 2 is used to weigh the weight body 5 to obtain the value change before and after the weight body 5, and then the mass of the weight body 5 is obtained. Then the weight body 5 is placed in the second water container 42 of the density detection assembly 4. Since the inside of the second water container 42 has liquid and the inside of the connecting pipe 43 has liquid, the first water container 41, the second water container 42 and the connecting pipe 43 form a siphon drainage effect. The weight body 5 is completely submerged in the second water container 42. Since the connecting pipe 43 is erected between the first water container 41 and the second water container 42, the liquid in the second water container 42 flows into the inside of the first water container 41 through the connecting pipe 43, so that the volume of the liquid flowing into the first water container 41 is the same as the volume of the weight body 5. Knowing the volume and mass of the weight body 5, the density of the weight body 5 can be obtained. Example Two:
[0023] As shown in Figure 2 and Figure 5 - Figure 10As shown, the side wall of the placement table 3 is provided with a weight clamping assembly 6, the weight clamping assembly 6 comprises a first fixed block 61, the first fixed block 61 is welded on the side wall of the placement table 3, the inside of the first fixed block 61 is provided with two second connecting rods 65, the inside of the two second connecting rods 65 is provided with a square rod 64, the square rod 64 and the second connecting rod 65 rotate synchronously, the rotation of the square rod 64 can drive the second connecting rod 65 to rotate, the outer end of the two square rods 64 is provided with a straight gear 63, the two straight gears 63 are meshed with each other, the lower side of the first fixed block 61 is provided with a stepping motor 62, the output end of the stepping motor 62 is connected with one of the square rods 64, the stepping motor 62 drives one of the square rods 64 to rotate, the other square rod 64 can be driven to rotate through the two meshed straight gears 63, so that the two second connecting rods 65 rotate in opposite directions, the end of the two second connecting rods 65 is provided with a second fixed block 67, the inside of the second fixed block 67 is provided with a crankshaft assembly 611, a connecting sleeve 612 and a clamping rod 68, one end of the clamping rod 68 is connected with the crankshaft assembly 611, the middle of the clamping rod 68 is connected with the inside of the connecting sleeve 612, the end of the two clamping rods 68 is clamped with a clamping groove 69, the clamping groove 69 of the two clamping rods 68 is used for clamping the weight body 5, the two second connecting rods 65 drive the two crankshaft assemblies 611 in the second fixed block 67 to rotate, so that the two clamping rods 68 swing, at this time the two clamping rods 68 can clamp the weight body 5, the weight clamping assembly 6 can clamp or release the weight body 5.
[0024] Please refer to Figure 5 - Figure 8 As shown, the output end of the stepping motor 62 reciprocating rotates, the inside of the second connecting rod 65 is provided with a square groove, the cross section of the square groove of the second connecting rod 65 is matched with the cross section of the square rod 64, the second connecting rod 65 is movably connected with the square rod 64, the two second connecting rods 65 float up and down synchronously, and the lifting height of the second connecting rod 65 is greater than the height of the weight, the stepping motor 62 drives the square rod 64 to rotate back and forth, so that the two square rods 64 rotate in opposite directions, the second connecting rod 65 rotates in opposite directions, and the square rod 64 and the second connecting rod 65 slide relative to each other, so that the two second connecting rods 65 can lift up and down at the same time, and the two clamping rods 68 swing relative to each other.
[0025] Please refer to Figure 5 - Figure 8As shown, the outer wall of the second connecting rod 65 is screwed with a fixing pin 610, the interior of the first fixing block 61 and at the two second connecting rods 65 are both provided with a spiral groove 66, the number of turns of the spiral groove 66 is half, the spiral grooves 66 of the two second connecting rods 65 are arranged on the axis of symmetry, the interior of the spiral groove 66 is slidably connected with the fixing pin 610, the rotating directions of the two straight gears 63 are opposite, the rotation of the second connecting rod 65 will make the fixing pin 610 slide in the interior of the spiral groove 66, so that the fixing pin 610 will drive the second connecting rod 65 to rotate and lift at the same time, so that the second connecting rod 65 drives the second fixing block 67 and the two clamping rods 68 to lift synchronously.
[0026] As shown in Figure 8 and Figure 9 As shown, the crankshaft assembly 611 includes a first connecting plate 6111 and a second connecting plate 6112, the end of the second connecting rod 65 is welded with the axis of the second connecting plate 6112, the first connecting plate 6111 and the second connecting plate 6112 are welded with a crank main body 6113, the end of the clamping rod 68 is movably connected with the exterior of the crank main body 6113, the first connecting plate 6111 and the second connecting plate 6112 are welded through the crank main body 6113, so that the two first connecting plates 6111 and the second connecting plate 6112 can drive the crank main body 6113 to rotate when rotating, the end of the clamping rod 68 rotates relative to the crank main body 6113, so that the two clamping rods 68 swing synchronously.
[0027] As shown in Figure 6 , Figure 9 and Figure 10 As shown, the end of the second connecting rod 65 is rotatably connected with the second fixing block 67, the axis of the first connecting plate 6111 is rotatably connected with the second fixing block 67, so that the second connecting rod 65 drives the second connecting plate 6112 of the crankshaft assembly 611 to rotate, the rotating angle range of the output shaft of the stepping motor 62 is-90°-90°, the back-and-forth rotation of the stepping motor 62 can drive the square rod 64, the second connecting rod 65, the crankshaft assembly 611 and the clamping rod 68 to swing back and forth, the two connecting sleeves 612 swing around their respective axes, the interiors of the two connecting sleeves 612 are both provided with a sliding groove 613, the interior of the sliding groove 613 is slidably connected with the middle of the clamping rod 68, the crank main body 6113 rotates around the axis of the second connecting rod 65, the crankshaft assembly 611 drives the clamping rod 68 to swing, so that the two clamping rods 68 simultaneously clamp or simultaneously release.
[0028] As shown in Figure 9As shown, when the two fixed pins 610 are located at the bottom end of the spiral groove 66, the two crank bodies 6113 are close to each other, the clamping grooves 69 of the two clamping rods 68 are separated from each other, the weight body 5 is separated from the clamping grooves 69 of the two clamping rods 68, and the second connecting rod 65 can rotate the second connecting plate 6112 and the crank body 6113, so that the second connecting plate 6112 and the clamping rod 68 swing, and at this time the two clamping rods 68 can loosen the weight body 5 and release it into the second water container 42.
[0029] Please refer to Figure 10 As shown, when the two fixed pins 610 are located at the top end of the spiral groove 66, the two crank bodies 6113 are away from each other, the clamping grooves 69 of the two clamping rods 68 are close to each other, the weight body 5 is clamped by the clamping grooves 69 of the two clamping rods 68, and the second connecting rod 65 can rotate the second connecting plate 6112 and the crank body 6113, so that the second connecting plate 6112 and the clamping rod 68 swing, and at this time the clamping rod 68 can clamp the weight body 5.
[0030] It needs to be explained that the weight body 5 is usually taken by hand, which is easy to cause water to be splashed on the hand, and even to cause water to be discharged from the first water container 41. The weight body 5 can be clamped by the weight clamp assembly 6. Specifically, the step motor 62 is driven to drive one of the square rods 64 to rotate. Since the same end of the two square rods 64 is provided with the straight gears 63 that are engaged with each other, the two square rods 64 can be driven to rotate in opposite directions. The second connecting rods 65 also rotate in opposite directions. The crankshaft assembly 611 in the second fixed block 67 rotates. Since the second connecting rod 65 drives the second connecting plate 6112 and the first connecting plate 6111 to rotate around the axis, the crank main body 6113 is driven to rotate around the axis of the first connecting plate 6111 and the second connecting plate 6112. The clamping rods 68 are connected between the connecting sleeve 612 and the crank main body 6113. The two clamping rods 68 can swing to clamp and release the weight body 5 at the end of the clamping rod 68. When the fixed pin 610 is located at the bottom end of the spiral groove 66, the second connecting rod 65 can drive the second connecting plate 6112 and the crank main body 6113 to rotate, so that the second connecting plate 6112 and the clamping rod 68 swing. At this time, the two clamping rods 68 can release the weight body 5 into the second water container 42. The step motor 62 drives the square rod 64 to rotate in the opposite direction. Since the spiral groove 66 cooperates with the fixed pin 610, the second connecting rod 65 can be lifted relative to the square rod 64. When the second connecting rod 65 rotates, the second connecting plate 6112 and the crank main body 6113 can be rotated, so that the second connecting plate 6112 and the clamping rod 68 swing. At this time, the clamping rod 68 can clamp the weight body 5. Clamping or releasing the weight body 5 can avoid liquid from being splashed on the hand to cause a large difference in data.
[0031] The preferred embodiments disclosed above are only used to help explain the present application. The preferred embodiments do not describe all the details and limit the present application to the specific embodiments. Obviously, many modifications and variations can be made according to the content of the present application. The embodiments are selected and described in detail to better explain the principles and practical applications of the present application, so that those skilled in the art can well understand and utilize the present application. The present application is limited by the claims and their full scope and equivalents.
Claims
1. An integrated weight quality testing mechanical device, comprising a fixed frame (1), a weighing sensor (2), and a placement platform (3), wherein the placement platform (3) is disposed at the top of the fixed frame (1), and the weighing sensor (2) is disposed between the fixed frame (1) and the placement platform (3), and a weight body (5) is disposed in the middle of the surface of the placement platform (3), characterized in that, The surface of the placing table (3) is provided with a density detection assembly (4), the density detection assembly (4) comprises a first water containing vessel (41) and a second water containing vessel (42), the inside of the second water containing vessel (42) contains liquid, a first connecting rod (46) is welded between the first water containing vessel (41) and the second water containing vessel (42), the sidewall of the second water containing vessel (42) is provided with two connecting pipes (43), one end of the connecting pipe (43) is located in the liquid surface of the second water containing vessel (42) in alignment, the other end of the connecting pipe (43) is located in the inside bottom of the first water containing vessel (41), the two ends of the connecting pipe (43) form a height difference, the inside of the second water containing vessel (42) and in the liquid is provided with a lifting piece (45), the edge of the lifting piece (45) is in sliding connection with the inner wall of the second water containing vessel (42), the connecting pipe (43) is used for conveying the liquid in the second water containing vessel (42) to the inside of the first water containing vessel (41), the weight body (5) is completely immersed in the liquid inside of the second water containing vessel (42), the volume of the liquid flowing into the first water containing vessel (41) is equal to the volume of the weight body (5).
2. The integrated, self-contained, mechanical apparatus for detecting the presence of a weight according to claim 1, wherein, The outside of the weight body (5) is covered with a layer of plastic film, and the plastic film is completely attached to the sidewall of the weight body (5), the outer wall surface of the weight body (5) is coated with mineral oil or paint of waterproof protective layer.
3. The integrated, self-contained, mechanical apparatus for detecting the presence of a weight according to claim 2, wherein, The sidewall of the first water containing vessel (41) is provided with a first scale line (44), the first scale line (44) is used for measuring the volume of the liquid flowing into the first water containing vessel (41), the sidewall of the second water containing vessel (42) is provided with a second scale line (47), the second scale line (47) is used for ensuring that the liquid in the second water containing vessel (42) is always flush with the liquid before the weight body (5) is placed.
4. The integrated, self-contained, mechanical weight verification apparatus of claim 3, wherein, The side wall of the placement table (3) is provided with a weight clamping assembly (6), the weight clamping assembly (6) comprises a first fixed block (61), the first fixed block (61) is welded on the side wall of the placement table (3), the inside of the first fixed block (61) is provided with two second connecting rods (65), the inside of the two second connecting rods (65) is provided with a square rod (64), the square rod (64) and the second connecting rod (65) rotate synchronously, the outside end of the two square rods (64) is provided with a straight gear (63), the two straight gears (63) are meshed with each other, the lower side of the first fixed block (61) is provided with a stepping motor (62), the output end of the stepping motor (62) is connected with one of the square rods (64), the end of the two second connecting rods (65) is provided with a second fixed block (67), the inside of the second fixed block (67) is provided with a crankshaft assembly (611), a connecting sleeve (612) and a clamping rod (68), one end of the clamping rod (68) is connected with the crankshaft assembly (611), the middle of the clamping rod (68) is connected with the inside of the connecting sleeve (612), the end of the two clamping rods (68) is clamped with a clamping groove (69), the clamping groove (69) of the two clamping rods (68) is used for clamping the weight body (5).
5. The integrated, self-contained, mechanical weight verification apparatus of claim 4, wherein, The output end of the stepping motor (62) reciprocating rotates, the inside of the second connecting rod (65) is provided with a square groove, the square groove section of the second connecting rod (65) is matched with the square rod (64) section, the second connecting rod (65) is movably connected with the square rod (64), the two second connecting rods (65) synchronously float up and down, and the lifting height of the second connecting rod (65) is greater than the height of the weight.
6. The integrated, self-contained, mechanical apparatus for detecting the presence of a weight according to claim 5, wherein, The outer wall of the second connecting rod (65) is threadedly connected with a fixed pin (610), the inside of the first fixed block (61) and at the two second connecting rods (65) are provided with a spiral groove (66), the number of turns of the spiral groove (66) is half, the spiral grooves (66) of the two second connecting rods (65) are arranged on the axis of symmetry, the inside of the spiral groove (66) is slidably connected with the fixed pin (610), and the rotating directions of the two straight gears (63) are opposite.
7. The integrated, self-contained, mechanical weight quality detection apparatus of claim 6, wherein, The crankshaft assembly (611) comprises a first connecting plate (6111) and a second connecting plate (6112), the end of the second connecting rod (65) is welded with the axis of the second connecting plate (6112), and the first connecting plate (6111) and the second connecting plate (6112) are welded with a crank main body (6113). The end of the clamping rod (68) is movably connected with the outside of the crank main body (6113).
8. The integrated, self-contained, mechanical weight quality detection apparatus of claim 7, wherein, The end of the second connecting rod (65) is rotatably connected with the second fixed block (67), the axis of the first connecting plate (6111) is rotatably connected with the second fixed block (67), the rotating angle range of the output shaft of the stepping motor (62) is -90°-90°, the two connecting sleeves (612) swing around their respective axes, the inside of the two connecting sleeves (612) is provided with a sliding groove (613), and the inside of the sliding groove (613) is slidably connected with the middle of the clamping rod (68).
9. The integrated, self-contained, mechanical weight verification apparatus of claim 8, wherein, When the two fixing pins (610) are located at the bottom end of the spiral groove (66), the two crank bodies (6113) are close to each other, the clamping grooves (69) of the two clamping rods (68) are separated from each other, and the weight body (5) is separated from between the clamping grooves (69) of the two clamping rods (68).
10. The integrated, self-contained, mechanical weight quality detection apparatus of claim 8, wherein, When the two fixing pins (610) are located at the top end of the spiral groove (66), the two crank bodies (6113) are away from each other, the clamping grooves (69) of the two clamping rods (68) are close to each other, and the weight body (5) is clamped by the clamping grooves (69) of the two clamping rods (68).