Bending strength testing device of fitness equipment barbell rod

Abstract

The invention relates to the field of testing devices, in particular to a bending strength testing device for a fitness equipment barbell rod. The invention aims to solve the technical problems that in the bending strength test of a barbell rod, the barbell rod needs to bear large bending force, if a clamp mechanism is unstable or the clamping force is insufficient, the barbell rod may slip or break in the test process, and potential safety hazards are caused to testers and equipment. Comprising a box body, a shell is fixedly connected to the upper surface of the box body, a spacing mechanism is arranged on the inner side of the box body, two clamp mechanisms are arranged on the upper side of the spacing mechanism, pressing mechanisms are arranged on the two sides of each clamp mechanism, a rotating mechanism is arranged on the side face of the clamp mechanism on the left side, and a detection mechanism is arranged between the two clamp mechanisms. By arranging the clamp mechanism, a clamping handle rotates, four clamping wheels move oppositely to clamp and fix a barbell rod, and a locking handle moves downwards to drive a locking pin and a limiting frame to lock the position of a locking plate.

Description

Technical Field

[0001] The present invention relates to the field of testing devices, and particularly to a bending strength testing device for a barbell rod of fitness equipment. Background Art

[0002] The barbell rod in fitness equipment is an important tool for strength training. Especially in weight training, it plays a core role and can help people carry out various strength trainings to improve physical fitness and muscle strength. The barbell rod is usually made of high-quality steel to ensure that it has sufficient strength and durability to withstand the weight during training. Testing the bending strength of the barbell rod can ensure that it will not deform or break during use, thus ensuring the safety of users.

[0003] The bending strength is an important index to evaluate the ability of a material to resist bending deformation. In the prior art, in the bending strength test of a barbell rod, the barbell rod needs to bear a large bending force. If the fixture mechanism is unstable or the clamping force is insufficient, the barbell rod may slip or break during the test, thus posing a safety hazard to the testers and equipment; during the test, the minute bending deformation of the barbell rod cannot be converted into quantifiable data, and the bending degree of the barbell rod cannot be accurately evaluated, and the reliability of the result cannot be guaranteed. Summary of the Invention

[0004] (1) Technical Problems to be Solved In order to overcome the disadvantages that in the bending strength test of a barbell rod, the barbell rod needs to bear a large bending force, and if the fixture mechanism is unstable or the clamping force is insufficient, the barbell rod may slip or break during the test, thus posing a safety hazard to the testers and equipment; during the test, the minute bending deformation of the barbell rod cannot be converted into quantifiable data, and the bending degree of the barbell rod cannot be accurately evaluated, and the reliability of the result cannot be guaranteed, the technical problem to be solved by the present invention is to provide a bending strength testing device for a barbell rod of fitness equipment.

[0005] (2) Technical Solutions To solve the above technical problems, the present invention provides a bending strength testing device for a barbell rod of a fitness equipment, which includes a box body. The upper surface of the box body is fixedly connected with a housing. A spacing mechanism is arranged inside the box body. Two fixture mechanisms are symmetrically arranged above the spacing mechanism. Pressing mechanisms are arranged on both sides of the fixture mechanisms. A rotating mechanism is arranged on the side of the left fixture mechanism. A detection mechanism is arranged between the two fixture mechanisms. The middle part of the upper surface of the housing is provided with a pressing mechanism. Four leveling mechanisms are arranged on the side of the bottom of the box body. The fixture mechanism includes a base, and the base is slidably connected with the upper surface of the box body. A T-shaped sliding groove is formed on the upper surface of the base. Two sliding seats are slidably connected in the T-shaped sliding groove. The inner side of the sliding seat is connected with a clamping shaft by a thread. The two sections of the thread on the outer side of the clamping shaft have opposite helix directions. The clamping shaft is rotatably connected with the base. The end of the clamping shaft passing through the base is fixedly connected with a clamping handle. Two clamping plates are fixedly connected to the upper surface of the sliding seat. A wheel shaft is rotatably connected to the side surfaces of the two clamping plates. A clamping wheel is fixedly connected to the outer side of the wheel shaft and between the two clamping plates.

[0006] Preferably, the fixture mechanism further includes a heightening plate, and the heightening plate is fixedly connected with the upper surface of one end of the base. The cross section of the heightening plate is L-shaped. A locking shaft is slidably connected to the upper end of the heightening plate. The locking shaft passes through the upper end of the heightening plate and is fixedly connected with a locking handle. A sliding block is fixedly connected to the lower end of the locking shaft. A locking spring is fixedly connected between the sliding block and the heightening plate. Two limiting frames are fixedly connected to the side surfaces of the heightening plate and the base. The cross section of the limiting frame is T-shaped. The limiting frame is slidably connected with the sliding block. A circular through hole is formed on the side surface of the limiting frame. A locking pin is slidably connected in the circular through hole. The locking pin is slidably connected with the sliding block. One end of the locking pin is fixedly connected with a sliding plate. The sliding plate is slidably connected with the sliding block. A tension spring is arranged on the outer side of the locking pin and between the sliding plate and the sliding block. The other side of the sliding plate is fixedly connected with an unlocking rack. The unlocking rack is slidably connected with the sliding block. Unlocking gears are arranged on the opposite side surfaces of the two unlocking racks. The unlocking gears are meshed and connected with the two unlocking racks. An unlocking shaft is fixedly connected to the inner side of the unlocking gear. The unlocking shaft is rotatably connected with the sliding block. The end of the unlocking shaft passing through the sliding block is fixedly connected with an unlocking handle.

[0007] Preferably, the fixture mechanism further includes a connecting rod. The upper end of the connecting rod is rotatably connected to the sliding block through a rotating shaft. The lower end of the connecting rod is rotatably connected to a locking plate through a rotating shaft. The locking plate is rotatably connected to the clamping shaft. Four arc-shaped through holes are formed in the side surface of the locking plate. Circular counterbores are formed in the side surfaces of the base and the heightening plate. A limiting plate is fixedly connected in the circular counterbore. The limiting plate is rotatably connected to the clamping shaft. Four oval through holes are formed in the side surface of the limiting plate. Four fixing plates are fixedly connected to the side surfaces of the base and the heightening plate. A limiting spring is fixedly connected to the side surface of the fixing plate. One end of the limiting spring is fixedly connected to a locking block. The locking block is slidably connected in the oval through hole of the limiting plate and the arc-shaped through hole of the locking plate through a rotating shaft.

[0008] Preferably, the spacing mechanism includes a motor bracket. The motor bracket is fixedly connected to the inner side surface of the box body. A spacing motor is fixedly connected to the upper surface of the motor bracket. The output end of the spacing motor is fixedly connected to a third pulley. A square through hole is formed in the upper surface of the box body. A spacing block is slidably connected in the square through hole. The spacing block is fixedly connected to the lower surface of the base. A threaded shaft is rotatably connected inside the spacing block through a thread. The threaded shaft is rotatably connected to the box body. A sliding shaft is slidably connected to the other side of the spacing block. The sliding shaft is fixedly connected to the box body. A fourth pulley is fixedly connected to the middle of the threaded shaft. A power belt is sleeved on the outer sides of the third pulley and the fourth pulley.

[0009] Preferably, the rotating mechanism includes a rotating motor. The rotating motor is fixedly connected to the base. The output end of the rotating motor is fixedly connected to a first pulley. A T-shaped sliding groove is formed in the side surface of the base. A tensioning block is slidably connected in the T-shaped sliding groove. A tensioning spring is fixedly connected between the side surface of the tensioning block and the side surface of the T-shaped sliding groove. A tensioning wheel is rotatably connected to the side surface of the tensioning block through a rotating shaft. A second pulley is fixedly connected to the end of the wheel shaft close to the rotating motor. A tensioning belt is sleeved on the outer sides of the first pulley, the second pulley, and the tensioning wheel close to the rotating motor.

[0010] Preferably, the pressing mechanism includes a chute plate. The chute plate is fixedly connected to the side surface of the base. Two oval counterbores are formed in the lower surface of the chute plate. Two fixing bolts are slidably connected in the oval counterbores. The upper ends of the fixing bolts are threadedly connected to a pressing plate. The upper end of the pressing plate is threadedly connected to a pressing shaft. One end of the pressing shaft passes through the pressing plate and is slidably connected to a pressing handle. The other end of the pressing shaft is conical.

[0011] Preferably, the detection mechanism includes two shaft seats which are fixedly connected to the upper surface of the box body. A detection shaft is rotatably connected inside the two shaft seats. The detection shaft passes through one of the shaft seats and is slidably connected with a detection handle. A moving column is rotationally connected to the outer side of the detection shaft by a thread. The moving column is slidably connected to the upper surface of the box body. A probe is slidably connected to the upper end of the moving column. One end of the probe is rotatably connected with a roller through a rotating shaft. A reset plate is fixedly connected to the outer side of the probe near the roller. A reset spring is arranged between the moving column and the reset plate on the outer side of the probe.

[0012] Preferably, the detection mechanism further includes a displacement gear. A square groove is formed inside the moving column. The displacement gear is rotatably connected inside the square groove through a rotating shaft. A plurality of tooth grooves are formed on the lower surface of the probe. The probe is meshed with the displacement gear through the tooth grooves. A transmission gear is arranged on the upper side of the displacement gear. The displacement gear is meshed with the transmission gear. The transmission gear is rotatably connected inside the square groove of the moving column through a rotating shaft. A disc is rotatably connected to the top surface of the square groove through a rotating shaft. The disc is meshed with the transmission gear. A dial is fixedly connected to the upper surface of the moving column. The disc is fixedly connected with the pointer inside the dial through a rotating shaft.

[0013] Preferably, the pressing mechanism includes a hydraulic telescopic rod which is fixedly connected to the outer shell. The hydraulic telescopic rod passes through the upper end of the outer shell and is fixedly connected with a protective cover. The protective cover is fixedly connected with the outer shell. The output end of the hydraulic telescopic rod passing through the outer shell is fixedly connected with a pressing block. An arc surface is formed on the lower surface of the pressing block, and an arc-shaped sliding groove is formed on the arc surface. An operation panel is rotatably connected to one side of the outer shell through a rotating shaft. A lifting door is slidably connected to one side of the outer shell. A maintenance door is rotatably connected to one side of the box body through a rotating shaft.

[0014] Preferably, the leveling mechanism includes a plurality of supports which are fixedly connected to the box body. A leveling shaft is slidably connected inside the supports. Leveling nuts are rotationally connected to both sides of the leveling shaft on the outer side through threads. A leveling block is fixedly connected to the lower end of the leveling shaft.

[0015] (3) Beneficial effects 1. By setting up a clamp mechanism, the clamping handle rotates the four clamping wheels to move towards each other to clamp and fix the barbell, and the locking handle moves downward to drive the locking pin and the limit frame to lock the position of the sliding block, and then the position of the locking plate is locked through the connecting rod, pushing the four locking blocks to move toward the clamping shaft and lock the clamping shaft to prevent the barbell from slipping or breaking during the test, ensuring the stability and clamping force of the clamp mechanism, and ensuring the safety of the testers and equipment; by setting up a detection mechanism, the bending part of the barbell pushes the pointer in the dial to rotate, and the bending deformation of the barbell is converted into quantifiable data to ensure the reliability of the test results and accurately evaluate the bending degree of the barbell; 2. By setting a clamping mechanism, twisting the clamping handle pushes one end of the clamping shaft to contact the end face of the barbell bar, preventing the barbell bar from sliding to one side during the test, thereby ensuring the validity of the test results of the barbell bar; by setting a rotating mechanism, the rotating motor drives the barbell bar to rotate, making the bending degree of the barbell bar more obvious, which is convenient for recording the bending data of the barbell bar. The tensioning wheel ensures the tightness of the tensioning belt to ensure the power output of the rotating mechanism; by setting a spacing mechanism, the two spacing blocks slide toward and in opposite directions, driving the bases in the two clamp mechanisms to move toward and in opposite directions, so that the clamp mechanism can be suitable for barbell bars of different lengths, thereby improving the applicability and flexibility of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the housing of the present invention; Figure 3 It is a schematic diagram of the structure of the clamp mechanism of the present invention; Figure 4 It is a schematic diagram of the locking plate and connecting rod structure of the present invention; Figure 5 It is a cross-sectional view of the sliding block and the limiting frame of the present invention; Figure 6 It is a schematic diagram of the rotating mechanism structure of the present invention; Figure 7 It is a schematic diagram of the structure of the clamping mechanism of the present invention; Figure 8 It is a schematic diagram of the structure of the detection mechanism of the present invention; Figure 9 It is a schematic diagram of the spacing mechanism structure of the present invention; Figure 10 It is a schematic diagram of the structure of the leveling mechanism of the present invention.

[0017] The markings in the attached drawings are as follows: 1 - outer shell, 2 - lifting door, 3 - maintenance door, 4 - box body, 5 - operation panel, 6 - detection mechanism, 601 - detection handle, 602 - detection shaft, 603 - shaft seat, 604 - moving column, 605 - probe, 606 - roller, 607 - reset plate, 608 - reset spring, 609 - displacement gear, 610 - transmission gear, 611 - wheel disc, 612 - dial, 7 - spacing mechanism, 701 - motor bracket, 702 - spacing motor, 703 - third pulley, 704 - fourth pulley, 705 - threaded shaft, 706 - spacing block, 707 - sliding shaft, 708 - power belt, 8 - fixture mechanism, 801 - clamping handle, 802 - clamping shaft, 803 - sliding seat, 804 - base, 805 - clamping plate, 806 - clamping wheel, 807 - wheel shaft, 808 - locking handle, 809 - locking shaft, 810 - locking spring, 811 - locking plate, 812 - connecting rod, 813 - limiting plate, 814 - locking block, 815 - limiting spring, 816 - fixing plate, 817 - unlocking handle, 818 - unlocking gear, 819 - sliding block, 820 - unlocking rack, 821 - locking pin, 822 - limiting frame, 823 - tension spring, 824 - sliding plate, 825 - unlocking shaft, 826 - heightening plate, 9 - pressing mechanism, 901 - protective cover, 902 - hydraulic telescopic rod, 903 - pressing block, 10 - leveling mechanism, 1001 - support, 1002 - leveling shaft, 1003 - leveling nut, 1004 - leveling block, 11 - pressing mechanism, 1101 - chute plate, 1102 - pressing spring, 1103 - fixing bolt, 1104 - pressing plate, 1105 - pressing shaft, 1106 - pressing handle, 12 - rotating mechanism, 1201 - rotating motor, 1202 - first pulley, 1203 - tensioning pulley, 1204 - tensioning block, 1205 - tensioning spring, 1206 - tensioning belt, 1207 - second pulley, 13 - barbell bar. Specific embodiments

[0018] The present invention will be further described below in conjunction with the attached drawings and embodiments. Embodiment 1

[0019] A bending strength test device for a barbell bar of fitness equipment, such as Figure 1 、 Figure 2As shown in the figure, it includes a box body 4. The upper surface of the box body 4 is fixedly connected with a housing 1. A spacing mechanism 7 is arranged inside the box body 4. By setting the spacing mechanism 7, the distance between two fixture mechanisms 8 is adjusted to adapt to barbell rods 13 of different lengths. Two fixture mechanisms 8 are symmetrically arranged on the upper side of the spacing mechanism 7. By setting the two fixture mechanisms 8, the barbell rod 13 is clamped and fixed to prevent the barbell rod 13 from slipping or breaking, ensuring the stability and clamping force of the fixture mechanism 8 and the safety of the tester and the equipment. Pressing mechanisms 11 are arranged on both sides of the fixture mechanism 8. By setting the pressing mechanisms 11, the barbell rod 13 is prevented from sliding to one side during the test, ensuring the effectiveness of the test results of the barbell rod 13. A rotating mechanism 12 is arranged on the side of the left fixture mechanism 8. By setting the rotating mechanism 12, the bending degree of the barbell rod 13 becomes more obvious, facilitating the recording of the bending data of the barbell rod 13. A detection mechanism 6 is arranged between the two fixture mechanisms 8. By setting the detection mechanism 6, the bending deformation of the barbell rod 13 is converted into quantifiable data to ensure the reliability of the test results and accurately evaluate the bending degree of the barbell rod 13. A pressing mechanism 9 is arranged in the middle of the upper surface of the housing 1. By setting the pressing mechanism 9, the anti-bending strength of the barbell rod 13 is tested. Four leveling mechanisms 10 are arranged on the side of the box body 4. By setting the leveling mechanisms 10, the upper surface of the box body 4 is adjusted to be horizontal, ensuring the effectiveness of the test results.

[0020] As Figure 3 shown, the fixture mechanism 8 includes a base 804. The base 804 is slidably connected to the upper surface of the box body 4. A T-shaped sliding groove is formed on the upper surface of the base 804. Two sliding seats 803 are slidably connected in the T-shaped sliding groove. The inner sides of the sliding seats 803 are threadedly connected with clamping shafts 802. The two sections of the threads on the outer side of the clamping shaft 802 have opposite helix directions. The clamping shaft 802 is rotatably connected to the base 804. When the clamping shaft 802 rotates, it drives the two sliding seats 803 to move towards and away from each other. The end of the clamping shaft 802 passing through the base 804 is fixedly connected with a clamping handle 801. Two clamping plates 805 are symmetrically and fixedly connected to the upper surface of the sliding seat 803. A wheel shaft 807 is rotatably connected to the sides of the two clamping plates 805 on the upper surface of the same sliding seat 803. A clamping wheel 806 is fixedly connected to the outer side of the wheel shaft 807 and between the two clamping plates 805.

[0021] As Figure 4 、 Figure 5As shown, the fixture mechanism 8 further includes a heightening plate 826. The heightening plate 826 is fixedly connected to the upper surface of one end of the base 804. The cross-section of the heightening plate 826 is L-shaped. The upper end of the heightening plate 826 is slidably connected to a locking shaft 809. The locking shaft 809 passes through the upper end of the heightening plate 826 and is fixedly connected to a locking handle 808. The lower end of the locking shaft 809 is fixedly connected to a sliding block 819. A locking spring 810 is fixedly connected between the sliding block 819 and the heightening plate 826. Two limiting frames 822 are symmetrically and fixedly connected to the same side of the heightening plate 826 and the base 804. The cross-section of the limiting frame 822 is T-shaped. Sliding grooves are formed on the side surfaces of both ends of the sliding block 819. The limiting frame 822 is slidably connected to the sliding block 819. Circular through holes are formed on the left and right side surfaces of the limiting frame 822. A locking pin 821 is slidably connected in the circular through hole. The locking pin 821 is slidably connected to the sliding block 819. One end of the locking pin 821 is fixedly connected to a sliding plate 824. The sliding plate 824 is slidably connected to the sliding block 819. A tension spring 823 is provided on the outer side of the locking pin 821 and between the sliding plate 824 and the sliding block 819. The other end side of the sliding plate 824 is fixedly connected to an unlocking rack 820. The unlocking rack 820 is arranged at a lower position on the side surface of the left sliding plate 824 and at a higher position on the side surface of the right sliding plate 824. The unlocking rack 820 is slidably connected to the sliding block 819. An unlocking gear 818 is arranged on the opposite side surfaces of the two unlocking racks 820. The unlocking gear 818 is meshed and connected to the two unlocking racks 820. An unlocking shaft 825 is fixedly connected to the inner side of the unlocking gear 818. The unlocking shaft 825 is rotatably connected to the sliding block 819. The end of the unlocking shaft 825 passing through the sliding block 819 is fixedly connected to an unlocking handle 817. When the sliding block 819 slides downward to a certain position, the tension spring 823 pulls the sliding plate 824 to drive the locking pin 821 to insert into the circular through hole of the limiting frame 822.

[0022] As Figure 4 、 Figure 5As shown, the clamp mechanism 8 also includes a connecting rod 812, the upper end of the connecting rod 812 is rotatably connected to the sliding block 819 through a rotating shaft, and the lower end of the connecting rod 812 is rotatably connected to a locking plate 811 through a rotating shaft, and the locking plate 811 is rotatably connected to the clamping shaft 802. The side of the locking plate 811 is provided with four arc-shaped through holes, and the side of the base 804 and the height-increasing plate 826 is provided with circular countersunk holes, which are arranged on the upper part of the base 804 and the lower part of the height-increasing plate 826. A limiting plate 813 is fixedly connected in the circular countersunk hole, and the limiting plate 813 is rotatably connected to the clamping shaft 802. The side of the limiting plate 813 is symmetrically provided with four elliptical through holes, and the side of the base 804 and the height-increasing plate 826 is fixedly connected with four fixing plates 816. Plates 816 are arranged at 90 degrees intervals, and the side of the fixed plate 816 is fixedly connected to the limiting spring 815, and one end of the limiting spring 815 is fixedly connected to a locking block 814, and the locking block 814 is fixedly connected to the side of the limiting plate 813 and the locking plate 811 with a rotating shaft, and the locking block 814 is slidably connected to the elliptical through hole of the limiting plate 813 via the rotating shaft, and the locking block 814 is slidably connected to the arc through hole of the locking plate 811 via the rotating shaft. When the connecting rod 812 pushes the locking plate 811 to rotate to one side, under the action of the elliptical through hole of the limiting plate 813 and the arc through hole of the locking plate 811, the four locking blocks 814 move toward each other to lock the clamping shaft 802.

[0023] like Figure 9 As shown, the spacing mechanism 7 includes a motor bracket 701, which is fixedly connected to the inner side of the box body 4, and a spacing motor 702 is fixedly connected to the upper surface of the motor bracket 701. The output end of the spacing motor 702 is fixedly connected to the third pulley 703. A square through hole is provided on the upper surface of the box body 4, and a spacing block 706 is slidably connected in the square through hole. The upper surface of the spacing block 706 is fixedly connected to the lower surface of the base 804, and the interior of the spacing block 706 is rotatably connected to a threaded shaft 705 through a thread. The threads at both ends of the outer side of the threaded shaft 705 rotate in opposite directions. When the threaded shaft 705 rotates, the two spacing blocks 706 are driven to slide toward and in the opposite direction. The threaded shaft 705 is rotatably connected to the box body 4, and the other end of the spacing block 706 is slidably connected to a sliding shaft 707. The sliding shaft 707 is fixedly connected to the box body 4, and the middle part of the threaded shaft 705 is fixedly connected to a fourth pulley 704. The outer sides of the third pulley 703 and the fourth pulley 704 are sleeved with a power belt 708.

[0024] like Figure 6As shown in the figure, the rotating mechanism 12 includes a rotating motor 1201. The rotating motor 1201 is fixedly connected to the base 804. The output end of the rotating motor 1201 is fixedly connected with a first pulley 1202. A T-shaped sliding groove is formed on the side surface of the base 804. A tensioning block 1204 is slidably connected in the T-shaped sliding groove. A tensioning spring 1205 is fixedly connected between the side surface of the tensioning block 1204 and the side surface of the T-shaped sliding groove. A tensioning wheel 1203 is rotatably connected to the side surface of the tensioning block 1204 through a rotating shaft. The end of the wheel shaft 807 close to the rotating motor 1201 is fixedly connected with a second pulley 1207. A tensioning belt 1206 is sleeved outside the first pulley 1202, the second pulley 1207, and the tensioning wheel 1203 close to the rotating motor 1201. The tensioning spring 1205 pushes the tensioning block 1204 to drive the tensioning wheel 1203 to slide to one side, so that the tensioning belt 1206 is kept in a tensioned state, ensuring the power output of the rotating mechanism 12.

[0025] As Figure 7 As shown in the figure, the pressing mechanism 11 includes a chute plate 1101. The chute plate 1101 is fixedly connected to the side surface of the base 804. Two oval counterbores are formed on the lower surface of the chute plate 1101. Two fixing bolts 1103 are slidably connected in the oval counterbores. The upper ends of the fixing bolts 1103 are threadedly connected with a pressing plate 1104. The upper end of the pressing plate 1104 is threadedly connected with a pressing shaft 1105. One end of the pressing shaft 1105 passing through the pressing plate 1104 is slidably connected with a pressing handle 1106. The other end of the pressing shaft 1105 is conical. The two ends of the barbell rod 13 are tightened by the pressing shaft 1105 to prevent the barbell rod 13 from displacing during the test.

[0026] As Figure 8As shown, the detection mechanism 6 includes two shaft seats 603. The shaft seats 603 are fixedly connected to the upper surface of the box body 4. A detection shaft 602 is rotatably connected inside the two shaft seats 603. The detection shaft 602 passes through the shaft seat 603 on one side and is slidably connected with a detection handle 601. A moving column 604 is rotationally connected to the outside of the detection shaft 602 by a thread. The moving column 604 is slidably connected to the upper surface of the box body 4. A probe 605 is slidably connected to the upper end of the moving column 604. One end of the probe 605 is rotatably connected with a roller 606 by a rotating shaft. A reset plate 607 is also fixedly connected to the outside of the probe 605 near the roller 606. A reset spring 608 is arranged between the outside of the probe 605 and between the moving column 604 and the reset plate 607. A square groove is formed inside the moving column 604. A displacement gear 609 is rotatably connected to the square groove by a rotating shaft. A plurality of tooth grooves are formed on the lower surface of the probe 605. The probe 605 is meshed and connected with the displacement gear 609 through the tooth grooves. A transmission gear 610 is arranged on the upper side of the displacement gear 609. The displacement gear 609 is meshed and connected with the transmission gear 610. The transmission gear 610 is rotatably connected to the square groove of the moving column 604 by a rotating shaft. A turntable 611 is rotatably connected to the top surface of the square groove by a rotating shaft. The turntable 611 is meshed and connected with the transmission gear 610. A dial 612 is fixedly connected to the upper surface of the moving column 604. The turntable 611 is fixedly connected to the pointer inside the dial 612 through a rotating shaft. When the bent part of the barbell rod 13 rotates, the probe 605 is driven to slide to the other side by the roller 606, and the pointer inside the dial 612 is driven to rotate, displaying the bending degree of the barbell rod 13.

[0027] As Figure 1 , Figure 2 shown, the pressing mechanism 9 includes a hydraulic telescopic rod 902. The hydraulic telescopic rod 902 is fixedly connected to the housing 1. The hydraulic telescopic rod 902 passes through the upper end of the housing 1 and is fixedly connected with a protective cover 901. The protective cover 901 is fixedly connected to the housing 1. The output end of the hydraulic telescopic rod 902 passing through the housing 1 is fixedly connected with a pressing block 903. An arc surface is formed on the lower surface of the pressing block 903, and an arc-shaped chute is formed on the arc surface. When the pressing block 903 moves downward, the barbell rod 13 is stuck in the arc-shaped chute of the pressing block 903 to prevent the position of the barbell rod 13 from changing. An operation panel 5 is rotatably connected to one side of the housing 1. By setting the operation panel 5, the device can be controlled, which is convenient for the operator to work. A lifting door 2 is slidably connected to one side of the housing 1. The lifting door 2 is made of a transparent material, which is convenient for the operator to observe and provides protection for the operator at the same time. A maintenance door 3 is rotatably connected to one side of the box body 4. By setting the maintenance door 3, the inside of the device can be maintained and repaired.

[0028] As Figure 10As shown in the figure, the leveling mechanism 10 includes four supports 1001. The four supports 1001 are arranged at the four corners of the box body 4. The supports 1001 are fixedly connected to the box body 4. A leveling shaft 1002 is slidably connected to the inner side of the support 1001. Threaded leveling nuts 1003 are rotationally connected to both sides of the leveling shaft 1002 and located outside the support 1001. By using a wrench to rotate the two leveling nuts 1003, the height of the box body 4 can be adjusted. A leveling block 1004 is fixedly connected to the lower end of the leveling shaft 1002.

[0029] When the device is in use, first adjust the upper surface of the box body 4 to be horizontal through the leveling mechanism 10. Use a wrench to rotate the two leveling nuts 1003 to adjust the height position of the leveling shaft 1002, thereby pushing the leveling block 1004 into contact with the ground, so that the upper surface of the box body 4 is adjusted to be horizontal. Then, according to the length of the barbell rod 13 to be tested, use the operation panel 5 to start the spacing mechanism 7 to adjust the distance between the two fixture mechanisms 8. Subsequently, open the lifting door 2, use the fixture mechanism 8 to clamp and fix the barbell rod 13 to be tested, and then use the pressing mechanism 11 to fix the end face of the barbell rod 13 to be tested. At this time, close the lifting door 2, start the pressing mechanism 9 through the operation panel 5 to apply pressure to the barbell rod 13 to be tested. The hydraulic telescopic rod 902 starts, and the output end of the hydraulic telescopic rod 902 drives the pressing block 903 to move downward. The pressing block 903 moves downward to contact the middle part of the barbell rod 13 and applies pressure to test the bending strength of the barbell rod 13. After the test is completed, first open the lifting door 2, adjust the position of the detection mechanism 6 to contact the barbell rod 13, and then start the rotating mechanism 12 through the operation panel 5 to drive the barbell rod 13 to rotate by a certain angle. Observe the bending degree of the barbell rod 13 through the detection mechanism 6 and record the bending data. After the recording is completed, first release the end face restriction of the barbell rod 13 by the pressing mechanism 11, and then release the clamping and fixing of the barbell rod 13 by the fixture mechanism 8. At this time, the barbell rod 13 can be removed to perform the bending strength test on the next barbell rod 13.

[0030] According to the length of the barbell rod 13 to be tested, when using the operation panel 5 to start the spacing mechanism 7 to adjust the distance between the two fixture mechanisms 8, the spacing motor 702 starts. The output end of the spacing motor 702 drives the third pulley 703 to rotate. Under the action of the power belt 708, the third pulley 703 rotates to drive the fourth pulley 704 to rotate. The fourth pulley 704 rotates to drive the threaded shaft 705 to rotate. The thread directions of the two ends of the outer side of the threaded shaft 705 are opposite. The threaded shaft 705 rotates to drive the two spacing blocks 706 to slide towards and away from each other on the outer side of the sliding shaft 707. The two spacing blocks 706 sliding towards and away from each other drive the bases 804 in the two fixture mechanisms 8 to move towards and away from each other, so that the fixture mechanism 8 can be applicable to barbell rods 13 of different lengths, improving the applicability and flexibility of the device.

[0031] After the distance adjustment between the two fixture mechanisms 8 is completed, when the lifting door 2 is opened and the fixture mechanism 8 is used to clamp and fix the barbell rod 13 being tested, first place one end of the barbell rod 13 between the four clamping wheels 806, and then rotate the clamping handle 801. The rotation of the clamping handle 801 drives the clamping shaft 802 to rotate. The thread directions of the two ends on the outer side of the clamping shaft 802 are opposite. The rotation of the clamping shaft 802 drives the two sliding seats 803 to slide towards each other in the T-shaped sliding grooves on the upper surface of the base 804. The two sliding seats 803 sliding towards each other drive the four clamping plates 805 to move towards each other. The four clamping plates 805 moving towards each other drive the four clamping wheels 806 to move towards each other through the four wheel shafts 807. The four clamping wheels 806 moving towards each other clamp and fix the barbell rod 13. Press down the locking handle 808. The downward movement of the locking handle 808 drives the locking shaft 809 to move downward. The downward movement of the locking shaft 809 drives the sliding block 819 to move downward. The downward movement of the sliding block 819 stretches the two locking springs 810. The downward movement of the sliding block 819 pushes one end of the connecting rod 812 downward. Under the action of the locking plate 811 being rotatably connected to the clamping shaft 802, one end of the connecting rod 812 moving downward pushes the other end of the connecting rod 812 to deflect to one side. The other end of the connecting rod 812 deflecting to one side pushes the locking plate 811 to rotate counterclockwise. Under the action of the arc-shaped through hole of the locking plate 811 and the oval through hole of the limiting plate 813, the rotation of the locking plate 811 drives the four locking blocks 814 to move towards the clamping shaft 802. The four locking blocks 814 moving towards the clamping shaft 802 stretch the limiting springs 815. After the four locking blocks 814 contact the clamping shaft 802, at this time the locking pin 821 is aligned with the circular through hole on the side of the limiting frame 822. Subsequently, the two tension springs 823 in the sliding block 819 contract and pull the two sliding plates 824 to slide in the opposite direction. The two sliding plates 824 sliding in the opposite direction push the two locking pins 821 to insert into the circular through holes on the side of the two limiting frames 822. At this time, the locking pin 821 and the limiting frame 822 lock the position of the locking plate 811, and the four locking blocks 814 lock the clamping shaft 802. The fixture mechanism 8 completes the clamping and fixing of the barbell rod 13, preventing the barbell rod 13 from slipping or breaking during the test, ensuring the stability and clamping force of the fixture mechanism 8, and ensuring the safety of the test personnel and equipment.

[0032] After the clamping mechanism 8 clamps and fixes the test barbell rod 13, the pressing mechanism 11 is used to fix the end face of the test barbell rod 13. Twist the pressing handle 1106 to rotate around the pressing shaft 1105. The rotation of the pressing handle 1106 around the pressing shaft 1105 drives the pressing shaft 1105 to rotate and move towards the barbell rod 13. After one end of the pressing shaft 1105 contacts the end face of the barbell rod 13, the pressing shaft 1105 rotates to push the pressing plate 1104 to slide away from the barbell rod 13. The sliding of the pressing plate 1104 away from the barbell rod 13 stretches the pressing spring 1102. The sliding of the pressing plate 1104 away from the barbell rod 13 drives the two fixing bolts 1103 to slide in the oval counterbores on the lower surface of the chute plate 1101. When the pressing plate 1104 slides to the outermost end of the chute plate 1101, the pressing mechanism 11 completes the fixation of the two end faces of the barbell rod 13, preventing the barbell rod 13 from sliding to one side during the test and ensuring the validity of the test results of the barbell rod 13.

[0033] After the pressing mechanism 9 finishes the pressure test on the barbell rod 13, open the lifting door 2, adjust the position of the detection mechanism 6 to contact the barbell rod 13. Twist the detection handle 601 to rotate around the detection shaft 602. The rotation of the detection handle 601 drives the detection shaft 602 to rotate. The rotation of the detection shaft 602 drives the moving column 604 to move towards the barbell rod 13. The movement of the moving column 604 towards the barbell rod 13 drives the probe 605 to move towards the barbell rod 13. The movement of the probe 605 towards the barbell rod 13 drives the roller 606 to contact the barbell rod 13. When the rotating mechanism 12 drives the barbell rod 13 to rotate by a certain angle, the barbell rod 13 can be driven by the rotating mechanism 12 to rotate different angles according to the actual test needs. The bent part of the barbell rod 13 pushes the roller 606 to move away from the barbell rod 13. The movement of the roller 606 away from the barbell rod 13 drives the probe 605 to move away from the barbell rod 13. The movement of the probe 605 away from the barbell rod 13 drives the reset plate 607 to move away from the barbell rod 13. The movement of the reset plate 607 away from the barbell rod 13 compresses the reset spring 608. The probe 605 is meshed and connected with the displacement gear 609 through the tooth groove. The movement of the probe 605 away from the barbell rod 13 drives the displacement gear 609 to rotate. The displacement gear 609 is meshed and connected with the transmission gear 610. The rotation of the displacement gear 609 drives the transmission gear 610 to rotate. The transmission gear 610 is meshed and connected with the wheel disc 611. The rotation of the transmission gear 610 drives the wheel disc 611 to rotate. The rotation of the wheel disc 611 drives the pointer in the dial 612 to rotate. When the roller 606 contacts the barbell rod 13, the dial 612 can be rotated to zero the pointer, converting the bending deformation of the barbell rod 13 into quantifiable data to ensure the reliability of the test results and accurately evaluate the bending degree of the barbell rod 13.

[0034] After the detection mechanism 6 comes into contact with the barbell rod 13, when the rotation mechanism 12 is started through the operation panel 5 to drive the barbell rod 13 to rotate by a certain angle, the rotation motor 1201 is started. The output end of the rotation motor 1201 drives the first pulley 1202 to rotate. Under the action of the tension belt 1206, the rotation of the first pulley 1202 drives the tension pulley 1203 and the second pulley 1207 to rotate. The rotation of the second pulley 1207 drives the axle 807 close to the rotation motor 1201 to rotate. The rotation of the axle 807 close to the rotation motor 1201 drives the clamping wheel 806 close to the rotation motor 1201 to rotate. The rotation of the clamping wheel 806 close to the rotation motor 1201 drives the barbell rod 13 to rotate by a certain angle. When the diameter of the barbell rod 13 changes, the clamping wheel 806 drives the position of the axle 807 to change synchronously. The axle 807 drives the position of the second pulley 1207 to change. The tension spring 1205 releases pressure and pushes the tension block 1204 to slide in the T-shaped chute on the side of the base 804. The sliding of the tension block 1204 in the T-shaped chute on the side of the base 804 drives the tension pulley 1203 to slide to one side. The sliding of the tension pulley 1203 to one side stretches the tension belt 1206 to ensure the power output of the rotation mechanism 12. When the barbell rod 13 rotates, the bending degree of the barbell rod 13 becomes more obvious, which is convenient for recording the bending data of the barbell rod 13.

[0035] After the bending data of the barbell rod 13 is recorded, the end surface restriction of the barbell rod 13 by the pressing mechanism 11 is released. The pressing handle 1106 is twisted in the reverse direction and rotates around the pressing shaft 1105. The reverse rotation of the pressing handle 1106 around the pressing shaft 1105 drives the pressing shaft 1105 to rotate in the reverse direction and move away from the barbell rod 13. After one end of the pressing shaft 1105 is separated from the end surface of the barbell rod 13, the pressing spring 1102 contracts and pulls the pressing plate 1104 to drive the two fixing bolts 1103 to slide in the oval counterbore on the lower surface of the chute plate 1101. At this time, the pressing mechanism 11 releases the end surface restriction of the barbell rod 13.

[0036] After the pressing mechanism 11 releases the end face restriction on the barbell rod 13, then the clamping mechanism 8 releases the clamping and fixing of the barbell rod 13. First, turn the unlocking handle 817. The rotation of the unlocking handle 817 drives the unlocking shaft 825 to rotate. The rotation of the unlocking shaft 825 drives the unlocking gear 818 to rotate. The unlocking gear 818 is meshed and connected with the unlocking rack 820. The rotation of the unlocking gear 818 drives the two unlocking racks 820 to move towards each other. The movement of the two unlocking racks 820 towards each other drives the two sliding plates 824 to move towards each other. The movement of the two sliding plates 824 towards each other drives the two locking pins 821 to disengage from the limiting frame 822. The movement of the two sliding plates 824 towards each other stretches the tension spring 823. The contraction of the locking spring 810 pulls the sliding block 819 to slide upwards. The upward sliding of the sliding block 819 pulls one end of the connecting rod 812 to slide upwards. The other end of the connecting rod 812 drives the locking plate 811 to rotate clockwise. Further, the contraction of the four limiting springs 815 pulls the four locking blocks 814 to disengage from the clamping shaft 802. The locking blocks 814 release the locking of the clamping shaft 802. Subsequently, rotate the clamping handle 801 in the reverse direction. The reverse rotation of the clamping handle 801 drives the clamping shaft 802 to rotate in the reverse direction. The reverse rotation of the clamping shaft 802 drives the two sliding seats 803 to slide reversely in the T-shaped sliding grooves on the upper surface of the base 804. The reverse sliding of the two sliding seats 803 drives the four clamping plates 805 to slide reversely. The reverse sliding of the four clamping plates 805 drives the four clamping wheels 806 to move in the reverse direction through the four wheel shafts 807. The reverse movement of the four clamping wheels 806 disengages from the barbell rod 13. At this time, the clamping mechanism 8 releases the clamping and fixing of the barbell rod 13.

[0037] The above embodiments only represent the preferred embodiments of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations, improvements and substitutions can be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

1. A bending strength testing device for a barbell bar of a fitness equipment, characterized in that: The invention comprises a box body (4), the upper surface of which is fixedly connected to an outer shell (1), a spacing mechanism (7) is arranged on the inner side of the box body (4), two clamping mechanisms (8) are symmetrically arranged on the upper side of the spacing mechanism (7), pressing mechanisms (11) are arranged on both sides of the clamping mechanism (8), a rotating mechanism (12) is arranged on the side of the left clamping mechanism (8), a detection mechanism (6) is arranged between the two clamping mechanisms (8), a pressure mechanism (9) is arranged in the middle of the upper surface of the outer shell (1), four leveling mechanisms (10) are arranged on the side of the bottom of the box body (4), the clamping mechanism (8) comprises a base (804), the base (804) is slidably connected to the upper surface of the box body (4), and the base (804) is arranged on the upper side of the box body (4). A T-shaped groove is provided on the upper surface of (804), and two sliding seats (803) are slidably connected in the T-shaped groove. The inner side of the sliding seat (803) is connected to a clamping shaft (802) through a thread. The two sections of thread on the outer side of the clamping shaft (802) rotate in opposite directions. The clamping shaft (802) is rotatably connected to the base (804). The clamping shaft (802) passes through the end of the base (804) and is fixedly connected to a clamping handle (801). Two clamping plates (805) are fixedly connected to the upper surface of the sliding seat (803). The sides of the two clamping plates (805) are rotatably connected to a wheel axle (807), and a clamping wheel (806) is fixedly connected to the outer side of the wheel axle (807) and located between the two clamping plates (805).

2. The bending strength testing device for a fitness equipment barbell bar according to claim 1, characterized in that: The clamp mechanism (8) further comprises a heightening plate (826), wherein the heightening plate (826) is fixedly connected to the upper surface of one end of the base (804), wherein the cross section of the heightening plate (826) is L-shaped, wherein the upper end of the heightening plate (826) is slidably connected to a locking shaft (809), wherein the locking shaft (809) passes through the upper end of the heightening plate (826) and is fixedly connected to a locking handle (808), wherein the lower end of the locking shaft (809) is fixedly connected to a sliding block (819), wherein the sliding block (819) is A locking spring (810) is fixedly connected between the moving block (819) and the height-increasing plate (826); two limit frames (822) are fixedly connected to the sides of the height-increasing plate (826) and the base (804); the limit frames (822) have a T-shaped cross section; the limit frames (822) are slidably connected to the sliding block (819); circular through holes are provided on the left and right sides of the limit frames (822); a locking pin (821) is slidably connected in the circular through holes; the locking pin (821) The locking pin (821) is slidably connected to the sliding block (819), one end of the locking pin (821) is fixedly connected to a sliding plate (824), the sliding plate (824) is slidably connected to the sliding block (819), a tension spring (823) is provided on the outer side of the locking pin (821) and between the sliding plate (824) and the sliding block (819), the other side of the sliding plate (824) is fixedly connected to an unlocking rack (820), the unlocking rack (820) is slidably connected to the sliding block (819), The movable block (819) is slidably connected, and an unlocking gear (818) is provided on the opposite sides of the two unlocking racks (820), and the unlocking gear (818) is meshingly connected with the two unlocking racks (820). An unlocking shaft (825) is fixedly connected to the inner side of the unlocking gear (818), and the unlocking shaft (825) is rotatably connected to the sliding block (819), and the end of the unlocking shaft (825) that passes through the sliding block (819) is fixedly connected with an unlocking handle (817).

3. The bending strength testing device for a barbell bar of fitness equipment according to claim 2, characterized in that: The clamp mechanism (8) further comprises a connecting rod (812), the upper end of the connecting rod (812) being rotatably connected to the sliding block (819) via a rotating shaft, the lower end of the connecting rod (812) being rotatably connected to a locking plate (811) via a rotating shaft, the locking plate (811) being rotatably connected to the clamping shaft (802), the side surface of the locking plate (811) being provided with four arc-shaped through holes, the side surfaces of the base (804) and the height-increasing plate (826) being provided with circular countersunk holes, the circular countersunk holes being fixedly connected to a limiting plate (813), the limiting plate (813) being provided with a fixed connection therein, 3) being rotatably connected to the clamping shaft (802), the side of the limit plate (813) is provided with four elliptical through holes, the base (804) and the side of the height-increasing plate (826) are fixedly connected with four fixing plates (816), the side of the fixing plate (816) is fixedly connected with a limit spring (815), one end of the limit spring (815) is fixedly connected with a locking block (814), and the locking block (814) is slidably connected to the elliptical through hole of the limit plate (813) and the arc-shaped through hole of the locking plate (811) via a rotating shaft.

4. The bending strength testing device for a barbell bar of fitness equipment according to claim 3, characterized in that: The spacing mechanism (7) comprises a motor support (701), the motor support (701) is fixedly connected to the inner side surface of the box body (4), the upper surface of the motor support (701) is fixedly connected to a spacing motor (702), the output end of the spacing motor (702) is fixedly connected to a third pulley (703), the upper surface of the box body (4) is provided with a square through hole, a spacing block (706) is slidably connected in the square through hole, and the spacing block (706) is fixedly connected to the lower surface of the base (804). The interior of the spacing block (706) is rotatably connected to a threaded shaft (705) through a thread, and the threaded shaft (705) is rotatably connected to the box body (4). The other side of the spacing block (706) is slidably connected to a sliding shaft (707), and the sliding shaft (707) is fixedly connected to the box body (4). The middle part of the threaded shaft (705) is fixedly connected to a fourth pulley (704), and the outer sides of the third pulley (703) and the fourth pulley (704) are provided with a power belt (708).

5. The bending strength testing device for a barbell bar of fitness equipment according to claim 4, characterized in that: The rotating mechanism (12) comprises a rotating motor (1201), the rotating motor (1201) is fixedly connected to the base (804), the output end of the rotating motor (1201) is fixedly connected to a first pulley (1202), a T-shaped groove is provided on the side of the base (804), a tensioning block (1204) is slidably connected in the T-shaped groove, a tensioning spring (1205) is fixedly connected between the side of the tensioning block (1204) and the side of the T-shaped groove, a tensioning pulley (1203) is rotatably connected to the side of the tensioning block (1204) via a rotating shaft, a second pulley (1207) is fixedly connected to the end of the wheel shaft (807) close to the rotating motor (1201), and a tensioning belt (1206) is sleeved on the outer sides of the first pulley (1202), the second pulley (1207) and the tensioning pulley (1203) close to the rotating motor (1201).

6. The bending strength testing device for a barbell bar of fitness equipment according to claim 5, characterized in that: The clamping mechanism (11) comprises a slide plate (1101), the slide plate (1101) being fixedly connected to the side of the base (804), the lower surface of the slide plate (1101) being provided with two elliptical countersunk holes, two fixing bolts (1103) being slidably connected in the elliptical countersunk holes, the upper ends of the fixing bolts (1103) being threadedly connected to a clamping plate (1104), the upper end of the clamping plate (1104) being threadedly connected to a clamping shaft (1105), one end of the clamping shaft (1105) passing through the clamping plate (1104) being slidably connected to a clamping handle (1106), the other end of the clamping shaft (1105) being conical.

7. The bending strength testing device for a barbell bar of fitness equipment according to claim 6, characterized in that: The detection mechanism (6) comprises two shaft seats (603), the shaft seats (603) are fixedly connected to the upper surface of the box body (4), the inner sides of the two shaft seats (603) are rotatably connected with detection shafts (602), the detection shaft (602) passes through the shaft seat (603) on one side and is slidably connected with a detection handle (601), the outer side of the detection shaft (602) is rotatably connected with a moving column (604) through a thread, the moving column (604) is slidably connected to the upper surface of the box body (4), the upper end of the moving column (604) is slidably connected with a probe (605), one end of the probe (605) is rotatably connected with a roller (606) through a rotating shaft, the probe (605) is also fixedly connected with a reset plate (607) near the outer side of the roller (606), and a reset spring (608) is provided on the outer side of the probe (605) and between the moving column (604) and the reset plate (607).

8. The bending strength testing device for a barbell bar of fitness equipment according to claim 7, characterized in that: The detection mechanism (6) further comprises a displacement gear (609). A square groove is provided inside the moving column (604). The displacement gear (609) is rotatably connected in the square groove via a rotating shaft. A plurality of tooth grooves are provided on the lower surface of the probe (605). The probe (605) is meshingly connected with the displacement gear (609) via the tooth grooves. A transmission gear (610) is provided on the upper side of the displacement gear (609). The displacement gear (609) is meshingly connected with the transmission gear (610). The transmission gear (610) is rotatably connected in the square groove of the moving column (604) via a rotating shaft. A wheel disc (611) is rotatably connected to the top surface of the square groove via a rotating shaft. The wheel disc (611) is meshingly connected with the transmission gear (610). A dial (612) is fixedly connected to the upper surface of the moving column (604). The middle part of the wheel disc (611) is fixedly connected to a pointer inside the dial (612) via a rotating shaft.

9. The bending strength testing device for a barbell bar of fitness equipment according to claim 8, characterized in that: The pressure mechanism (9) comprises a hydraulic telescopic rod (902), the hydraulic telescopic rod (902) is fixedly connected to the housing (1), the upper end of the hydraulic telescopic rod (902) passing through the housing (1) is fixedly connected to a protective cover (901), the protective cover (901) is fixedly connected to the housing (1), the output end of the hydraulic telescopic rod (902) passing through the housing (1) is fixedly connected to a pressure block (903), the lower surface of the pressure block (903) is provided with an arc surface, and the arc surface is provided with an arc-shaped sliding groove, one side of the housing (1) is rotatably connected to an operation panel (5) via a rotating shaft, one side of the housing (1) is slidably connected to a lifting door (2), and one side of the box body (4) is rotatably connected to a maintenance door (3) via a rotating shaft.

10. The bending strength testing device for a barbell bar of fitness equipment according to claim 9, characterized in that: The leveling mechanism (10) comprises a plurality of supports (1001), wherein the supports (1001) are fixedly connected to the box body (4), a leveling shaft (1002) is slidably connected to the inner side of the support (1001), a leveling nut (1003) is rotatably connected to the outer side of the leveling shaft (1002) and located on both sides of the support (1001) via a thread, and a leveling block (1004) is fixedly connected to the lower end of the leveling shaft (1002).

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