A barbell rod hardness testing device

Abstract

The present invention relates to the field of detection technology, and proposes a barbell bar hardness detection device, including a detection bracket, a squeezing mechanism, a limit adjustment mechanism, a driving mechanism, a detection mechanism, a main console, a time relay switch and a protective cover, wherein the upper end of the inner rear side of the detection bracket is rotatably connected with the squeezing mechanism, the middle of the upper ends of the inner two sides of the detection bracket are fixedly installed with the limit adjustment mechanism, the inner periphery of the limit adjustment mechanism is fixedly installed at the two ends of the barbell bar body, the right end of the inner lower part of the detection bracket is fixedly installed with the driving mechanism, the left side of the detection bracket is provided with the main console, the middle of the inner left upper end of the detection bracket is fixedly installed with the time relay switch, and the middle of the front end of the detection bracket is fixedly installed with the detection mechanism. Through the detection of the barbell bar body in multiple directions and with different deformation degrees, the detection credibility is higher, the detection efficiency is improved, the detection result is more accurate, and at the same time, the safety factor is higher during the detection process.

Description

Technical Field

[0001] The invention relates to the field of detection technology, and in particular to a barbell bar hardness detection device. Background Art

[0002] Barbell is a core training exercise equipment, also used for weightlifting. Barbell exercise is a type of weight training. It is just using barbell training equipment to increase muscle strength training. You can also use barbells for core training to promote overall coordination. Barbells have a wide range of uses. Whether it is the muscles of the shoulders, back, arms, chest, etc., by using barbells and iron plates of different weights, using multiple times of special muscle training techniques, you can do muscle endurance training for muscle groups throughout the body, burn fat, strengthen muscle strength, enhance the body's core ability, and improve muscles that are still loose after a long period of exercise.

[0003] A barbell is mainly composed of a barbell and barbell plates. The barbell is mainly made of stainless steel, pure iron, chromium alloy, aluminum alloy, etc. After the production of the barbell is completed, its hardness needs to be sampled. The barbell hardness refers to the tensile strength of the barbell, which is used to test the degree of recovery of the barbell after the athlete's snatch. In the prior art, the test method generally involves installing barbell plates on both ends of the barbell, using a weightlifting machine to lift it to a certain height, then lowering it and smashing it against a bracket or the ground. This detection method not only has a low safety factor, but also has low detection efficiency and accuracy.

[0004] Therefore, we make improvements to this and propose a barbell bar hardness detection device. Summary of the invention

[0005] (I) The technical problem to be solved by the present invention is: to improve the detection efficiency and accuracy while improving the safety factor of the detection.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned invention object, the present invention provides a barbell bar hardness detection device, including a detection bracket, a squeezing mechanism, a limit adjustment mechanism, a driving mechanism, a detection mechanism, a main console, a time relay switch and a protective cover, the inner rear upper end of the detection bracket is rotatably connected with the squeezing mechanism, a barbell bar body is arranged in front of the squeezing mechanism, which is used to perform bending detection on the barbell bar body, the middle part of the upper end of the inner two sides of the detection bracket is fixedly installed with the limit adjustment mechanism, the inner periphery of the limit adjustment mechanism is fixedly installed at the two ends of the barbell bar body, which is used to fix the barbell bar body to cooperate with the squeezing mechanism for bending detection, the right end of the inner lower part of the detection bracket is fixedly installed with the driving mechanism, which is used to drive the squeezing mechanism to rotate to perform bending detection on the barbell bar body, the left side of the detection bracket is provided with the main console, the middle part of the inner left upper end of the detection bracket is fixedly installed with the time relay switch, which is used to detect whether the barbell bar body is reset, the right end of the detection bracket is fixedly installed with the protective cover, which is used to protect the driving mechanism, and the detection mechanism is fixedly installed at the middle part of the front end of the detection bracket, which is used to detect the bending degree of the barbell bar body.

[0008] Preferably, the extrusion mechanism includes a driving shaft, a connecting shaft one, a connecting shaft two, a connecting shaft three, an arc extrusion plate one, an arc extrusion plate two and an arc extrusion plate three, and the connecting shaft one, the connecting shaft two and the connecting shaft three are evenly distributed on the periphery of the driving shaft, and the connecting shaft one, the connecting shaft two and the connecting shaft three are respectively fixedly installed with an arc extrusion plate one, an arc extrusion plate two and an arc extrusion plate three at one end away from the driving shaft, and the angles between the driving shaft, the connecting shaft one and the connecting shaft two are all 120°, and the curvatures of the arc extrusion plate one, the arc extrusion plate two and the arc extrusion plate three increase successively.

[0009] Preferably, the limit adjustment mechanism includes a limit seat, a limit slide rod, a limit slide groove, a limit plate, a mounting ring, a top column, a pull rod, a spring, a small gear and a large gear. The outer periphery of the lower end of the limit seat is slidably connected to the limit slide rod, and the outer periphery of the limit slide rod is evenly provided with limit slide grooves, and the end of the limit slide rod close to the barbell bar body is fixedly connected to the limit plate, the inner periphery of the upper end of the limit seat is rotatably connected to the mounting ring, the inner periphery of the upper end of the mounting ring is slidably connected to the top column, the upper end of the top column is fixedly connected to the pull rod, and the outer periphery of the pull rod is sleeved with a spring, the right end outer periphery of the mounting ring on the right side is fixedly connected to the small gear, the rear end of the small gear is meshed and connected to the large gear, and the inner periphery of the large gear is fixedly connected to the right end outer periphery of the driving shaft.

[0010] Preferably, the ends of the limit slide rod away from the barbell rod body are fixedly connected to the middle parts of the inner sides of the detection bracket, the inner periphery of the mounting ring is sleeved on the outer periphery of the two ends of the barbell rod body, the lower end of the spring is fixedly connected to the outer periphery of the upper end of the mounting ring, and the left lower end of the left limit seat is in contact with the right side of the time relay switch.

[0011] Preferably, the driving mechanism includes a motor frame, an electric motor, a driving pulley, a transmission belt, a tensioning pulley and a driven pulley, the upper end of the motor frame is fixedly connected to the electric motor, the right driving end of the electric motor is fixedly connected to the driving pulley, the driving pulleys are connected to the tensioning pulley and the driven pulley through the transmission belt, and the middle part of the driven pulley is fixedly connected to the outer periphery of the right end of the driving shaft.

[0012] Preferably, the right end of the motor frame is fixedly connected to the right end of the inner lower part of the detection bracket, the middle inner periphery of the tensioning pulley is rotatably connected to the middle right side of the detection bracket, and the outer peripheries of both ends of the drive shaft are rotatably connected to the rear of the upper ends on both sides of the detection bracket.

[0013] Preferably, the detection mechanism includes a connecting column, a driving bin, a ejector pin, a pool groove 1, a contact sensor, a limit shaft, a torsion spring, a special-shaped gear, a ruler bar, a scale and a pool groove 2; the upper end of the connecting column is fixedly connected to the driving bin, the ejector pin is slidably connected to the left opening of the driving bin, the right front end of the ejector pin is provided with a pool groove 1, the rear end of the ejector pin is fixedly connected to the contact sensor, the inner middle part of the driving bin is rotatably connected to the limit shaft, the upper and lower end peripheries of the limit shaft are both sleeved with torsion springs, the middle periphery of the limit shaft is fixedly connected to a special-shaped gear, the right opening of the driving bin is slidably connected to the ruler bar, the upper front end of the ruler bar is provided with a scale, and the left middle part of the ruler bar is fixedly connected to the pool groove 2.

[0014] Preferably, the lower end of the connecting column is fixedly connected to the middle part of the front side of the inner lower part of the detection bracket, the rear end of the contact sensor is fitted with the middle part of the front end of the barbell bar body, the right side of the pool groove one is meshed with the left end of the special-shaped gear, and the right end of the special-shaped gear is meshed with the pool groove two.

[0015] Preferably, the end of the torsion spring close to the torsion spring is fixedly connected to the left middle part of the upper and lower ends of the special-shaped gear, and the side of the torsion spring away from the special-shaped gear is fixedly connected to the middle part of the inner upper and lower ends of the driving bin.

[0016] Preferably, the time relay switch is electrically connected to the main console via a wire, and the main console is electrically connected to the contact sensor and the motor via a wire.

[0017] (III) Beneficial effects

[0018] The barbell bar hardness detection device provided by the present invention has the following beneficial effects:

[0019] 1. By setting up the extrusion mechanism, the limit adjustment mechanism and the driving mechanism, it is possible to simulate at one time whether the barbell body can be reset after being deformed when the barbell plates of different weights are installed at both ends of the barbell body during the athlete's snatch, thereby simulating the deformation detection of the barbells of different weights installed at both ends of the barbell body from low to high, so that there is no need to install barbell plates of different weights at both ends of the barbell body, lift them up in the air and then throw them down, and the hardness test of the barbell body is performed, which improves the detection efficiency and makes the detection safer.

[0020] 2. When the arc-shaped extrusion plate pair has completed the inspection of the barbell bar body, before the arc-shaped extrusion plate pair inspects the barbell bar body, the installation circle on the right is driven to rotate, and then cooperates with the installation circle on the left to drive the barbell bar body to rotate, so that before the arc-shaped extrusion plate pair extrudes the barbell bar body, the barbell bar body is driven to rotate and turn over. Similarly, after the arc-shaped extrusion plate pair extrudes the barbell bar body to test the deformation of the barbell bar body, the barbell bar body is driven to rotate and turn over again. Through the cooperation of the extrusion mechanism, the limit adjustment mechanism and the driving mechanism, the rotation and turning of the barbell bar body is completed while simulating the process of testing with barbell plates of different weights at both ends of the barbell bar body, and the extrusion of the middle part of the barbell bar body from different sides is realized, so as to simulate the change of the force direction of the barbell bar body during the athlete's grasping process, so that the detection result is more comprehensive, the detection credibility is higher, and the detection efficiency is improved while the detection result is more accurate.

[0021] 3. After the barbell body is reset, the limit adjustment mechanism drives the barbell body to rotate. During the rotation, the contact sensor contacts the front middle of the barbell body. When the barbell body cannot be reset due to the simulated detection deformation, the ejector drives the special-shaped gear to rotate through the first tank, and then drives the ruler to move back and forth in the right opening of the drive bin through the second tank. Observe the relative position of the scale at the upper end of the ruler and the front side of the right opening of the drive bin, and then observe whether the barbell body is completely restored to its original state. The torsion springs at the upper and lower ends of the limit shaft can make the rear end of the contact sensor fit with the front end of the barbell body. A detection mechanism is arranged in the middle part of the front end of the detection bracket, so as to detect whether the barbell bar body is completely reset when the extrusion mechanism, the limit adjustment mechanism and the driving mechanism rotate the barbell bar body. At the same time, the special-shaped gear arranged inside the driving bin cooperates with the pool slots one and two to amplify the stroke of the ejector pin and display it through the scale at the upper end of the ruler, so that it is more convenient to observe whether the middle part of the barbell bar body is completely restored to its original state after a test, without the need for subsequent measurement, the detection accuracy is higher, it is more convenient to observe the detection results, and the detection efficiency is further improved.

[0022] 4. After the middle part of the barbell bar body is squeezed and cannot be completely reset, the limit seat at the left end cannot fit with the right end of the time relay switch during the rotation of the barbell bar body. Before the next arc-shaped extrusion plate 2 or arc-shaped extrusion plate 3 contacts the barbell bar body, a signal is sent to the main console, and the main console controls the motor to stop to avoid accidents during the detection process. Through the cooperation of the limit adjustment mechanism and the time relay switch, the safety of the detection process is further improved during the hardness detection of the barbell bar body. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 This is a front perspective schematic diagram of a barbell bar hardness testing device provided in the present application;

[0025] Figure 2 The second front perspective schematic diagram of a barbell bar hardness testing device provided by the present application;

[0026] Figure 3 A partial three-dimensional schematic diagram of an extrusion mechanism of a barbell bar hardness testing device provided in the present application;

[0027] Figure 4 This is a partially disassembled three-dimensional schematic diagram of a barbell bar hardness testing device provided in the present application;

[0028] Figure 5 The second partially disassembled stereoscopic schematic diagram of a barbell bar hardness testing device provided by the present application;

[0029] Figure 6 A partial three-dimensional schematic diagram of a detection mechanism of a barbell bar hardness detection device provided in the present application;

[0030] Figure 7 A partially exploded three-dimensional schematic diagram of a detection mechanism of a barbell bar hardness detection device provided in the present application;

[0031] Figure 8 for Figure 4 Enlarged view of point A in the middle.

[0032] In the figure: 1. detection bracket; 2. extrusion mechanism; 21. driving shaft; 22. connecting shaft 1; 23. connecting shaft 2; 24. connecting shaft 3; 25. arc extrusion plate 1; 26. arc extrusion plate 2; 27. arc extrusion plate 3; 3. limit adjustment mechanism; 31. limit seat; 32. limit slide bar; 33. limit slide groove; 34. limit plate; 35. mounting ring; 36. top column; 37. pull rod; 38. spring; 39. small gear; 310. large gear; 4. driving mechanism ; 41. Motor frame; 42. Motor; 43. Driving pulley; 44. Transmission belt; 45. Tensioning pulley; 46. Driven pulley; 5. Detection mechanism; 51. Connecting column; 52. Driving bin; 53. Ejector pin; 54. Tank 1; 55. Contact sensor; 56. Limiting shaft; 57. Torsion spring; 58. Special-shaped gear; 59. Ruler; 510. Scale; 511. Tank 2; 6. Main console; 7. Time relay switch; 8. Protective cover; 9. Barbell bar body. DETAILED DESCRIPTION

[0033] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples of the specification. The following examples are only used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0034] like Figure 1-Figure 8 As shown, this embodiment proposes a barbell bar hardness detection device, including a detection bracket 1, a squeezing mechanism 2, a limit adjustment mechanism 3, a driving mechanism 4, a detection mechanism 5, a main console 6, a time relay switch 7 and a protective cover 8. The upper end of the inner rear side of the detection bracket 1 is rotatably connected with the squeezing mechanism 2, and a barbell bar body 9 is arranged in front of the squeezing mechanism 2 for performing bending detection on the barbell bar body 9. The limit adjustment mechanism 3 is fixedly installed in the middle of the upper ends of the inner sides of the detection bracket 1, and the inner periphery of the limit adjustment mechanism 3 is fixedly installed at both ends of the barbell bar body 9 for fixing The barbell rod body 9 cooperates with the extrusion mechanism 2 to perform bending detection. A driving mechanism 4 is fixedly installed on the right end of the inner lower part of the detection bracket 1, which is used to drive the extrusion mechanism 2 to rotate the barbell rod body 9. A main console 6 is arranged on the left side of the detection bracket 1. A time relay switch 7 is fixedly installed in the middle of the inner left upper end of the detection bracket 1, which is used to detect whether the barbell rod body 9 is reset. A protective cover 8 is fixedly installed on the right end of the detection bracket 1 for protecting the driving mechanism 4. A detection mechanism 5 is fixedly installed in the middle of the front end of the detection bracket 1 for detecting the degree of bending of the barbell rod body 9.

[0035] In this embodiment, the extrusion mechanism 2 includes a driving shaft 21, a connecting shaft 1 22, a connecting shaft 23, a connecting shaft 3 24, an arc extrusion plate 1 25, an arc extrusion plate 2 26 and an arc extrusion plate 3 27. The connecting shaft 1 22, the connecting shaft 23 and the connecting shaft 3 24 are evenly distributed on the outer periphery of the driving shaft 21. The ends of the connecting shaft 1 22, the connecting shaft 23 and the connecting shaft 3 24 away from the driving shaft 21 are respectively fixed with an arc extrusion plate 1 25, an arc extrusion plate 26 and an arc extrusion plate 3 27. The angles between the driving shaft 21, the connecting shaft 1 22 and the connecting shaft 2 23 are all 120°, and the curvatures of the arc extrusion plate 1 25, the arc extrusion plate 26 and the arc extrusion plate 3 27 increase successively.

[0036] In this embodiment, the limit adjustment mechanism 3 includes a limit seat 31, a limit slide rod 32, a limit slide groove 33, a limit plate 34, a mounting ring 35, a top column 36, a pull rod 37, a spring 38, a small gear 39 and a large gear 310. The outer periphery of the lower end of the limit seat 31 is slidably connected to the limit slide rod 32, and the outer periphery of the limit slide rod 32 is evenly provided with a limit slide groove 33. The end of the limit slide rod 32 close to the barbell bar body 9 is fixedly connected to the limit plate 34. The inner periphery of the upper end of the limit seat 31 is rotatably connected to the mounting ring 35, and the inner periphery of the upper end of the mounting ring 35 is slidably connected to the top column 36. The upper end of the top column 36 is fixedly connected to the pull rod 37, and the outer periphery of the pull rod 37 is sleeved with a spring 38. The right end outer periphery of the right side mounting ring 35 is fixedly connected to the small gear 39, and the rear end of the small gear 39 is meshingly connected to the large gear 310. The inner periphery of the large gear 310 is fixedly connected to the right end outer periphery of the driving shaft 21.

[0037] In this embodiment, the end of the limit slide rod 32 away from the barbell rod body 9 is fixedly connected to the middle part of the inner two sides of the detection bracket 1, the inner periphery of the mounting circle 35 is sleeved on the outer periphery of the two ends of the barbell rod body 9, the lower end of the spring 38 is fixedly connected to the outer periphery of the upper end of the mounting circle 35, and the lower left end of the left limit seat 31 is in contact with the right side of the time relay switch 7.

[0038] In this embodiment, the driving mechanism 4 includes a motor frame 41, a motor 42, a driving pulley 43, a transmission belt 44, a tensioning pulley 45 and a driven pulley 46. The upper end of the motor frame 41 is fixedly connected to the motor 42, the right end driving end of the motor 42 is fixedly connected to the driving pulley 43, the driving pulley 43 is connected to the tensioning pulley 45 and the driven pulley 46 through the transmission belt 44, and the middle part of the driven pulley 46 is fixedly connected to the outer periphery of the right end of the driving shaft 21.

[0039] In this embodiment, the right end of the motor frame 41 is fixedly connected to the right end of the inner lower part of the detection bracket 1, the middle inner periphery of the tensioning pulley 45 is rotatably connected to the middle of the right side of the detection bracket 1, and the outer peripheries of both ends of the driving shaft 21 are rotatably connected to the rear of the upper ends on both sides of the detection bracket 1.

[0040] Specifically, when it is necessary to conduct random inspection on the barbell bar body 9, first randomly select a few barbell bar bodies 9, rotate the arc-shaped extrusion plate 25 to the uppermost end, and two people cooperate to pull the left upper end pull rod 37, insert one end of the barbell bar body 9 into the left installation circle 35, and continue to insert it into the middle opening of the left upper end of the detection bracket 1, pull the right pull rod 37, and then insert the right end of the barbell bar body 9 into the right installation circle 35, and move the barbell bar body 9 to the right, observe the right side of the pinion 39, until the right end of the barbell bar body 9 is flush with the right side of the pinion 39, loosen the pull rods 37 on both sides, and drive the top column through the spring 38. The motor 42 at the upper end of the motor frame 41 is started, and the driven pulley 46 is driven to rotate through the driving pulley 43, the transmission belt 44 and the tensioning pulley 45, thereby driving the driving shaft 21 to rotate, driving the arc-shaped extrusion plate 1 25 close to the middle of the rear side of the barbell bar body 9, extruding the barbell bar body 9 to cause a certain deformation, simulating the deformation of the middle part of the barbell bar body 9 due to the force on both ends. When the arc-shaped extrusion plate 1 25 is separated from the barbell bar body 9, the barbell bar body 9 rebounds to its original state, and the arc-shaped extrusion plate 26 extrudes the middle part of the barbell bar body 9 again, so that the middle part of the barbell bar body 9 Finally, the arc-shaped extrusion plate 3 27 at the rear side squeezes the middle part of the barbell bar body 9 to make the barbell bar body 9 deform the most, simulating the different deformation degrees of the barbell bar body 9 when different barbell plates are assembled at both ends of the barbell bar body 9 during the snatch. By setting the extrusion mechanism 2, the limit adjustment mechanism 3 and the driving mechanism 4, it is possible to simulate at one time whether the barbell bar body 9 can be reset after deformation when barbell plates of different weights are assembled at both ends of the barbell bar body 9 during the athlete's snatch, thereby simulating the deformation detection of different weights of barbells assembled from low to high at both ends of the barbell bar body 9. While improving the detection efficiency, the detection process is also safer. After the middle part of the barbell rod body 9 is squeezed and cannot be completely reset, the limit seat 31 at the left end cannot fit with the right end of the time relay switch 7 during the rotation of the barbell rod body 9. Before the next arc-shaped extrusion plate 26 or arc-shaped extrusion plate 3 27 contacts the barbell rod body 9, a signal is sent to the main console 6, and the main console 6 controls the motor 42 to stop to avoid accidents during the detection process. Through the cooperation of the limit adjustment mechanism 3 and the time relay switch 7, the safety of the detection process is further improved during the hardness detection of the barbell rod body 9.

[0041] In this embodiment, the detection mechanism 5 includes a connecting column 51, a driving bin 52, a pin 53, a tank 1 54, a contact sensor 55, a limit shaft 56, a torsion spring 57, a special-shaped gear 58, a ruler 59, a scale 510 and a tank 2 511. The upper end of the connecting column 51 is fixedly connected to the driving bin 52, the pin 53 is slidably connected to the left opening of the driving bin 52, the right front end of the pin 53 is provided with a tank 1 54, the rear end of the pin 53 is fixedly connected to the contact sensor 55, the inner middle part of the driving bin 52 is rotatably connected to the limit shaft 56, the upper and lower ends of the limit shaft 56 are sleeved with torsion springs 57, the middle outer periphery of the limit shaft 56 is fixedly connected to the special-shaped gear 58, the right opening of the driving bin 52 is slidably connected to the ruler 59, the upper front end of the ruler 59 is provided with a scale 510, and the left middle part of the ruler 59 is fixedly connected to the tank 2 511.

[0042] In this embodiment, the lower end of the connecting column 51 is fixedly connected to the middle part of the inner lower front side of the detection bracket 1, the rear end of the contact sensor 55 is in contact with the middle part of the front end of the barbell rod body 9, the right side of the pool groove 1 54 is meshed with the left end of the special-shaped gear 58, and the right end of the special-shaped gear 58 is meshed with the pool groove 2 511.

[0043] In this embodiment, the end of the torsion spring 57 close to the torsion spring 57 is fixedly connected to the left side of the middle part of the upper and lower ends of the special-shaped gear 58, and the side of the torsion spring 57 away from the special-shaped gear 58 is fixedly connected to the middle part of the inner upper and lower ends of the drive compartment 52.

[0044] In this embodiment, the time relay switch 7 is electrically connected to the main console 6 through a wire, and the main console 6 is electrically connected to the contact sensor 55 and the motor 42 through a wire.

[0045] Specifically, during the detection process, the barbell bar body 9 is deformed, so that the limit slide bar 32 slides on the outer periphery of the limit seat 31, so that the small gear 39 and the large gear 310 are disengaged, so that in the process of squeezing the middle part of the barbell bar body 9, the barbell bar body 9 will not be deformed. When the arc-shaped squeezing plate 1 25 completes the detection of the barbell bar body 9, the barbell bar body 9 is reset, and the small gear 39 is re-engaged with the large gear 310. Before the upper arc-shaped squeezing plate 26 detects the barbell bar body 9, the right side mounting ring 35 is driven to rotate, and then cooperates with the left side mounting ring 35 to drive the barbell bar body 9 to rotate, so as to achieve the arc-shaped squeezing. Before squeezing the barbell bar body 9, the second plate 26 drives the barbell bar body 9 to rotate and turn over. Similarly, after the arc-shaped squeezing plate 26 squeezes the barbell bar body 9 to test the deformation of the barbell bar body 9, it drives the barbell bar body 9 to rotate and turn over again. Through the cooperation of the squeezing mechanism 2, the limit adjustment mechanism 3 and the driving mechanism 4, it is achieved that in the process of simulating the barbell bar body 9 with barbell plates of different weights at both ends for testing, the rotation and turning of the barbell bar body 9 are completed at the same time, and the middle part of the barbell bar body 9 is squeezed from different sides, which simulates the change of the force direction of the barbell bar body 9 during the athlete's grasping process, so that the test result is more complete. The detection reliability is higher. After the barbell rod body 9 is reset, the limit adjustment mechanism 3 drives the barbell rod body 9 to rotate. During the rotation, the contact sensor 55 contacts the front middle part of the barbell rod body 9. When the barbell rod body 9 cannot be reset due to the simulated detection deformation, the ejector pin 53 drives the special-shaped gear 58 to rotate through the tank 1 54, and then drives the ruler 59 to move back and forth in the right opening of the drive bin 52 through the tank 2 511. Observe the relative position of the scale 510 at the upper end of the ruler 59 and the front side of the right end opening of the drive bin 52, and then observe whether the barbell rod body 9 is completely restored to its original state. The torsion springs at the upper and lower ends of the limit shaft 56 57 can make the rear end of the contact sensor 55 fit with the front end of the barbell rod body 9. By arranging the detection mechanism 5 in the middle part of the front end of the detection bracket 1, it is possible to detect whether the barbell rod body 9 is completely reset during the process of the extrusion mechanism 2, the limit adjustment mechanism 3 and the driving mechanism 4 rotating the barbell rod body 9. At the same time, the special-shaped gear 58 arranged inside the driving bin 52 cooperates with the pool groove 1 54 and the pool groove 2 511 to amplify the stroke of the ejector pin 53 and display it through the scale 510 at the upper end of the ruler 59, so that it is more convenient to observe whether the middle part of the barbell rod body 9 is completely restored to its original state after a test.

[0046] Working principle: When it is necessary to inspect the barbell bar body 9, first randomly select a few barbell bar bodies 9, rotate the arc extrusion plate 25 to the uppermost end, and two people cooperate to pull the left upper end pull rod 37, insert one end of the barbell bar body 9 into the inside of the left installation circle 35, and continue to insert it into the middle opening of the left upper end of the detection bracket 1, pull the right pull rod 37, and then insert the right end of the barbell bar body 9 into the inside of the right installation circle 35, and move the barbell bar body 9 to the right, observe the right side of the pinion 39, until the right end of the barbell bar body 9 is flush with the right side of the pinion 39, loosen the pull rods 37 on both sides, and drive the top column 36 to engage with the upper ends of the two ends of the barbell bar body 9 through the spring 38, start the motor 42 at the upper end of the motor frame 41, and through The driving pulley 43, the transmission belt 44 and the tensioning pulley 45 drive the driven pulley 46 to rotate, which in turn drives the driving shaft 21 to rotate, driving the arc-shaped extrusion plate 1 25 close to the middle part of the rear side of the barbell bar body 9, extruding the barbell bar body 9 to cause a certain deformation, simulating the deformation of the middle part of the barbell bar body 9 due to the force on both ends. When the arc-shaped extrusion plate 1 25 is separated from the barbell bar body 9, the barbell bar body 9 rebounds to its original state, and the arc-shaped extrusion plate 2 26 squeezes the middle part of the barbell bar body 9 again, causing the middle part of the barbell bar body 9 to undergo a greater deformation. Finally, the arc-shaped extrusion plate 3 27 on the rear side squeezes the middle part of the barbell bar body 9, causing the barbell bar body 9 to undergo the greatest deformation, simulating the snatch of the barbell bar body 9 with different barbell plates installed at both ends. The different deformation degrees of the barbell bar body 9 in the process are realized by arranging the squeezing mechanism 2, the limit adjustment mechanism 3 and the driving mechanism 4 to cooperate, so as to realize the one-time simulation of whether the barbell bar body 9 can be reset after being deformed when the barbell plates of different weights are assembled at both ends of the barbell bar body 9 during the athlete's snatch, thereby realizing the simulation of the deformation detection of the barbell bars of different weights assembled from low to high at both ends of the barbell bar body 9, which improves the detection efficiency and makes the detection process safer. During the detection process, the barbell bar body 9 is deformed, so that the limit slide bar 32 slides on the outer periphery of the limit seat 31, so that the small gear 39 and the large gear 310 are disengaged, so that in the process of squeezing the middle part of the barbell bar body 9, the barbell bar body 9 will not be deformed. After the arc-shaped extrusion plate 1 25 has completed the inspection of the barbell bar body 9, the barbell bar body 9 is reset, and the small gear 39 meshes with the large gear 310 again. Before the upper arc-shaped extrusion plate 26 inspects the barbell bar body 9, the right-side mounting ring 35 is driven to rotate, and then cooperates with the left-side mounting ring 35 to drive the barbell bar body 9 to rotate, so that the arc-shaped extrusion plate 26 drives the barbell bar body 9 to rotate and turn over before squeezing the barbell bar body 9. Similarly, after the arc-shaped extrusion plate 26 squeezes the barbell bar body 9 to test the deformation of the barbell bar body 9, the barbell bar body 9 is driven to rotate and turn over again. Through the cooperation of the extrusion mechanism 2, the limit adjustment mechanism 3 and the driving mechanism 4, it is realized that in the process of simulating the barbell bar body 9 with barbell plates of different weights assembled at both ends for inspection,At the same time, the rotation and turning over of the barbell bar body 9 is completed, and the middle part of the barbell bar body 9 is squeezed from different sides, simulating the change of the force direction of the barbell bar body 9 during the athlete's grasping process, so that the detection result is more comprehensive and the detection credibility is higher. After the barbell bar body 9 is reset, the limit adjustment mechanism 3 drives the barbell bar body 9 to rotate. During the rotation process, the contact sensor 55 contacts the front middle part of the barbell bar body 9. When the barbell bar body 9 cannot be reset due to the simulated detection deformation, the ejector pin 53 passes through the pool. The groove 1 54 drives the special-shaped gear 58 to rotate, and then drives the ruler 59 to move back and forth in the right opening of the driving bin 52 through the pool groove 2 511, and observes the relative position of the scale 510 at the upper end of the ruler 59 and the front side of the right end opening of the driving bin 52, and then observes whether the barbell rod body 9 is completely restored to its original state. The torsion springs 57 at the upper and lower ends of the limit shaft 56 can make the rear end of the contact sensor 55 fit with the front end of the barbell rod body 9. By arranging the detection mechanism 5 in the middle of the front end of the detection bracket 1, it is realized that the extrusion mechanism 2, During the process of rotating the barbell bar body 9, the limit adjustment mechanism 3 and the driving mechanism 4 detect whether the barbell bar body 9 is completely reset. At the same time, the special-shaped gear 58 arranged inside the driving bin 52 cooperates with the pool groove 1 54 and the pool groove 2 511 to amplify the stroke of the ejector pin 53 and display it through the scale 510 at the upper end of the ruler 59, so that it is more convenient to observe whether the middle part of the barbell bar body 9 is completely restored to its original state after a test. After the middle part of the barbell bar body 9 is squeezed and cannot be completely reset, the limit seat 31 at the left end cannot fit with the right end of the time relay switch 7 during the process of driving the barbell bar body 9 to rotate. Before the next arc extrusion plate 2 26 or arc extrusion plate 3 27 contacts the barbell bar body 9, a signal is sent to the main console 6, and the main console 6 controls the motor 42 to stop to avoid accidents during the detection process. Through the cooperation of the limit adjustment mechanism 3 and the time relay switch 7, the safety of the detection process is further improved during the hardness detection of the barbell bar body 9. ,

[0047] The above embodiments are only used to illustrate the present invention, but not to limit the present invention. Although the present invention is described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention, and should be included in the scope of the claims of the present invention.

Claims

1. A barbell bar hardness detection device, comprising a detection bracket (1), a squeezing mechanism (2), a limit adjustment mechanism (3), a driving mechanism (4), a detection mechanism (5), a main console (6), a time relay switch (7) and a protective cover (8), characterized in that: The upper end of the inner rear side of the detection bracket (1) is rotatably connected to a squeezing mechanism (2); a barbell rod body (9) is arranged directly in front of the squeezing mechanism (2) for performing bending detection on the barbell rod body (9); a limit adjustment mechanism (3) is fixedly installed in the middle of the upper ends of both inner sides of the detection bracket (1); the limit adjustment mechanism (3) is fixedly installed at both ends of the barbell rod body (9) for fixing the barbell rod body (9) to cooperate with the squeezing mechanism (2) for bending detection; a driving mechanism (4) is fixedly installed at the right end of the inner lower part of the detection bracket (1) ), used to drive the squeezing mechanism (2) to rotate to perform squeezing detection on the barbell rod body (9), a main console (6) is arranged on the left side of the detection bracket (1), a time relay switch (7) is fixedly installed in the middle of the upper end of the inner left side of the detection bracket (1), used to detect whether the barbell rod body (9) is reset, a protective cover (8) is fixedly installed on the right end of the detection bracket (1), used to protect the driving mechanism (4), and a detection mechanism (5) is fixedly installed in the middle of the front end of the detection bracket (1), used to detect the bending degree of the barbell rod body (9); The detection mechanism (5) comprises a connecting column (51), a driving bin (52), a pin (53), a first tank (54), a contact sensor (55), a limit shaft (56), a torsion spring (57), a special-shaped gear (58), a ruler (59), a scale (510) and a second tank (511), wherein the upper end of the connecting column (51) is fixedly connected to the driving bin (52), the pin (53) is slidably connected in the left opening of the driving bin (52), the first tank (54) is provided at the right front end of the pin (53), the contact sensor (55) is fixedly connected to the rear end of the pin (53), the inner middle part of the driving bin (52) is rotatably connected to the limit shaft (56), the upper and lower ends of the limit shaft (56) are both sleeved with torsion springs (57), the middle part of the limit shaft (56) is fixedly connected to the special-shaped gear (58), A ruler (59) is slidably connected in the right opening of the driving bin (52), a scale (510) is provided on the front side of the upper end of the ruler (59), a second tank (511) is fixedly connected to the middle of the left end of the ruler (59), the lower end of the connecting column (51) is fixedly connected to the middle of the front side of the inner lower part of the detection bracket (1), the rear end of the contact sensor (55) is in contact with the middle of the front end of the barbell rod body (9), the right side of the first tank (54) is meshed with the left end of the special-shaped gear (58), the right end of the special-shaped gear (58) is meshed with the second tank (511), the end of the torsion spring (57) close to the torsion spring (57) is fixedly connected to the left side of the middle of the upper and lower ends of the special-shaped gear (58), and the side of the torsion spring (57) away from the special-shaped gear (58) is fixedly connected to the middle of the inner upper and lower ends of the driving bin (52).

2. A barbell bar hardness detection device according to claim 1, characterized in that: The extrusion mechanism (2) comprises a driving shaft (21), a connecting shaft 1 (22), a connecting shaft 2 (23), a connecting shaft 3 (24), an arc-shaped extrusion plate 1 (25), an arc-shaped extrusion plate 2 (26) and an arc-shaped extrusion plate 3 (27); the connecting shaft 1 (22), the connecting shaft 2 (23) and the connecting shaft 3 (24) are evenly distributed on the outer side of the driving shaft (21); the arc-shaped extrusion plate 1 (25), the arc-shaped extrusion plate 2 (26) and the arc-shaped extrusion plate 3 (27) are respectively fixedly mounted on the ends of the connecting shaft 1 (22), the connecting shaft 2 (23) and the connecting shaft 3 (24) away from the driving shaft (21); the angles between the driving shaft (21), the connecting shaft 1 (22) and the connecting shaft 2 (23) are all 120°; and the curvatures of the arc-shaped extrusion plate 1 (25), the arc-shaped extrusion plate 2 (26) and the arc-shaped extrusion plate 3 (27) increase in sequence.

3. A barbell bar hardness detection device according to claim 1, characterized in that: The limit adjustment mechanism (3) comprises a limit seat (31), a limit slide bar (32), a limit slide groove (33), a limit plate (34), a mounting ring (35), a top column (36), a pull rod (37), a spring (38), a small gear (39) and a large gear (310), the lower end of the limit seat (31) is slidably connected to the limit slide bar (32), the outer side of the limit slide bar (32) is evenly provided with the limit slide groove (33), and the end of the limit slide bar (32) close to the barbell bar body (9) is fixedly connected to the limit plate (34), the upper end of the limit seat (31) is rotatably connected to a mounting ring (35), the upper end of the mounting ring (35) is slidably connected to a top column (36), the upper end of the top column (36) is fixedly connected to a pull rod (37), the outer side of the pull rod (37) is sleeved with a spring (38), the right end of the right side mounting ring (35) is fixedly connected to a small gear (39), the rear end of the small gear (39) is meshingly connected to a large gear (310), and the large gear (310) is fixedly connected to the right end of the drive shaft (21).

4. A barbell bar hardness detection device according to claim 3, characterized in that: The ends of the limit slide bar (32) away from the barbell rod body (9) are fixedly connected to the middle parts of the inner sides of the detection bracket (1), the mounting rings (35) are sleeved on the two ends of the barbell rod body (9), the lower ends of the springs (38) are fixedly connected to the upper ends of the mounting rings (35), and the left lower end of the left limit seat (31) is in contact with the right side of the time relay switch (7).

5. A barbell bar hardness detection device according to claim 1, characterized in that: The driving mechanism (4) comprises a motor frame (41), a motor (42), a driving pulley (43), a transmission belt (44), a tensioning pulley (45) and a driven pulley (46); the upper end of the motor frame (41) is fixedly connected to the motor (42); the right end driving end of the motor (42) is fixedly connected to the driving pulley (43); the driving pulley (43) is connected to the tensioning pulley (45) and the driven pulley (46) via a transmission belt (44); and the middle part of the driven pulley (46) is fixedly connected to the right end of the driving shaft (21).

6. A barbell bar hardness detection device according to claim 5, characterized in that: The right end of the motor frame (41) is fixedly connected to the right end of the inner lower part of the detection bracket (1), the middle part of the tensioning pulley (45) is rotatably connected to the middle part of the right side of the detection bracket (1), and both ends of the drive shaft (21) are rotatably connected to the rear parts of the upper ends of both sides of the detection bracket (1).

7. A barbell bar hardness detection device according to claim 1, characterized in that: The time relay switch (7) is electrically connected to the main console (6) via a wire, and the main console (6) is electrically connected to the contact sensor (55) and the motor (42) via a wire.

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