阅读说明：本技术 一种举杠铃时的自动换配重块及清洁保护装置 (Automatic balancing weight changing and cleaning protection device during barbell lifting ) 是由 孙争光 于 2020-07-30 设计创作，主要内容包括：本发明公开的一种举杠铃时的自动换配重块及清洁保护装置,包括工作箱,所述工作箱内设有工作腔,所述工作腔内设有用于收割甘蔗的收割装置,所述收割装置包括与所述工作腔下侧内壁固定连接的梯形斜面块,通过升降保护装置使得杠铃以及不需要的杠铃片跟随着健身人员举起放下杠铃的动作一起上下往复移动,从而防止了因设置的质量过大或肌肉疲劳导致脱力产生的杠铃对于健身人员造成伤害的可能,并通过更换装置为健身人员自动增加杠铃片,再通过清洁装置清洁擦拭杠铃杆,还通过动力装置为整个装置提供了动力,给健身人员提供了便捷,也防止了可能发生的运动伤害事件。(The invention discloses an automatic balancing weight changing and cleaning protection device during barbell lifting, which comprises a work box, a working chamber is arranged in the working box, a harvesting device for harvesting the sugarcane is arranged in the working chamber, the harvesting device comprises a trapezoidal inclined plane block fixedly connected with the inner wall of the lower side of the working chamber, the barbell and the unnecessary barbell plates can reciprocate up and down along with the action of lifting up and down the barbell by the body builder through the lifting protection device, thereby preventing the possibility that the barbell which is produced by the force-off caused by the overlarge set mass or the muscle fatigue causes the injury to the body-building personnel, the barbell disc is automatically added to fitness personnel through the replacing device, the barbell rod is cleaned through the cleaning device, power is provided for the whole device through the power device, convenience is provided for the fitness personnel, and possible sport injury events are prevented.)

1. The utility model provides an automatic change balancing weight and clean protection device when lifting barbell, includes the work box, be equipped with the working chamber in the work box, its characterized in that: the lifting protection device for protecting body-building personnel during barbell lifting is arranged in the working cavity and comprises two moving boxes which are in bilateral symmetry sliding connection with the inner wall of the front side of the working cavity, two moving cavities with openings towards the symmetry axis are arranged in the two moving boxes, two box wall grooves which are communicated from left to right are arranged in the inner wall of the two moving cavities far away from the symmetry axis, a plurality of triangular stop blocks which are adjusted according to actual conditions are fixedly arranged on the inner walls of the lower sides of the two moving cavities, a plurality of barbell plates which are positioned between the two triangular stop blocks and are arranged according to actual conditions are in sliding connection with the lower sides of the two moving cavities, barbell plate cavities which are communicated from left to right are arranged in the barbell plates, barbell rods which extend to the outer walls of the two moving cavities far away from the symmetry axis are in sliding connection with the inner walls of the barbell plates, and a plurality of triangular slide blocks which are arranged according to actual conditions, a plurality of be located remove the intracavity triangle sliding block with barbell disc chamber upside inner wall sliding connection, bilateral symmetry fixedly connected with is located on the barbell pole two telecentric fixing blocks of keeping away from outside the symmetry axis side end face of barbell disc of furthest from the symmetry axis side, bilateral symmetry fixedly connected with is located on the barbell pole two heart fixed blocks of being close to outside the symmetry axis side end face of barbell disc closest to the symmetry axis side, the barbell pole extends to remove the chamber and keep away from two rings of fixedly connected with on the outside section of symmetry axis side end face, two Y type poles of terminal surface fixedly connected with under the ring, two articulated on the Y type pole have and are located two X type pole on two of Y type pole downside, two it has two to be located to go up articulated on the X type pole two lower X type poles, go up on the lower Y type pole branching section articulated with lower X type pole on the branching section and articulated part section can be from fitting to according to elasticity The telescopic barbell bar comprises a telescopic chute bar body, wherein the front and the back of the lower X-shaped bar body are fixedly connected with a front fixed hinge seat and a rear fixed hinge seat, the front and the back of the lower X-shaped bar body are fixedly connected with two fixed hinge seats, the inner side of the lower side of a working cavity is fixedly connected with the two fixed hinge seats, a replacing device for adding barbell discs is arranged in the working cavity, a cleaning device for cleaning the barbell bar body is arranged in the working cavity, and a power device.

2. The device of claim 1, wherein the weight-changing block and the cleaning protection device are arranged in a manner of lifting barbell: the lifting protection device further comprises a disc shaft and two disc shafts which are symmetrically and rotatably connected with the inner wall of the left side and the right side of the working cavity, the two discs are fixedly connected to the disc shaft and are hinged to two rockers and two rockers close to the side end faces of the symmetric shafts, the rockers are hinged to the two sliding groove rods, the inner wall of the rear side of the working cavity is fixedly connected to two rear box wall fixing blocks and two spring rods are slidably connected to the rear box wall fixing blocks, the lower end face of the upper end face of each spring rod is fixedly connected to the lower end face of each rear box wall fixing block, the upper end face of the inner wall of the rear side of the working cavity is rotatably connected to two eccentric wheel shafts on the upper side of each abutting block, and the upper end face of each eccentric wheel shaft is fixedly connected to two eccentric wheels.

3. The device of claim 2, wherein the weight-changing block and the cleaning protection device are arranged in a manner of lifting barbell: the replacing device comprises two bevel blocks which are in bilateral symmetry sliding connection with the inner wall at the rear side of the working cavity, the inner wall at the rear side of the working cavity is in bilateral symmetry fixed connection with rear box wall sliding blocks which are positioned between the two bevel blocks, the two rear box wall sliding blocks are in sliding connection with two sliding rods which are in sliding connection with the two bevel blocks and are close to the side end faces of the symmetrical shafts, the inner wall at the left side and the right side of the working cavity is in symmetric rotation connection with two reset wheel shafts which are positioned at the upper sides of the two bevel blocks and are connected with the two disc shafts through belt pulleys, the two reset wheel shafts are fixedly connected with two reset wheels of which the outer circumferential end faces are wave-shaped grooves, the two sliding rods are connected with two fixed pins which are abutted against the wave-shaped grooves at the outer circumferential end faces of the reset wheels through sliding grooves, and the two sliding rods can extend into the, two connecting rods of inclined plane piece up end fixedly connected with, two connecting rod up end fixedly connected with horizontal stock, tank wall dead lever behind the working chamber rear side inner wall fixedly connected with, fixedly connected with carriage release lever on the horizontal stock, the carriage release lever with back tank wall dead lever sliding connection, working chamber upside inner wall sliding connection have extend to outside the working chamber and with carriage release lever up end fixed connection's rotation axis, the rotation axis is located rotate fixedly connected with knob on the outer section of working chamber.

4. The device of claim 3, wherein the weight-changing block and the cleaning protection device are arranged in a manner of lifting barbell: cleaning device include with the carousel axle that the inner wall of working chamber downside rotated the connection, the epaxial fixedly connected with carousel of carousel, terminal surface fixedly connected with column arch on the carousel, tank wall fixed axle on the inner wall fixedly connected with of working chamber upside, the last rotating connection has sector gear on the tank wall fixed axle, be equipped with in the long straight section of sector gear from top to bottom link up and with the protruding sliding connection's of column long straight section spout, sliding connection has the U type cleaning block on the last tank wall fixed axle, U type cleaning block rear end face fixedly connected with the rack of sector gear circular arc section meshing.

5. The device of claim 4, wherein the weight-changing block and the cleaning protection device are arranged in a manner of lifting barbell: the power device comprises a motor fixedly connected with the rear inner wall of the working cavity, the left end face of the motor is provided with a first spindle, the right end face of the motor is provided with a second spindle, the first spindle is connected with the left reset wheel shaft through a belt pulley, the second spindle is connected with the right reset wheel shaft through a belt pulley, the two first bevel gears on the symmetrical shaft side are kept away from the disc through a fixedly connected mode on the disc shaft, the inner wall of the rear side of the working cavity is rotatably connected with two transmission shafts on the rear side of the disc shaft and connected with the two eccentric wheel shafts through belt pulleys, the two second bevel gears meshed with the first bevel gears are fixedly connected with the transmission shafts, the third bevel gear on the lower side of the rotary disc is fixedly connected with the rear inner wall of the rear side of the rotary disc shaft and connected with the left rear box wall of the eccentric wheel shaft through belt pulleys, the second bevel gears are meshed with the first bevel gears And a fourth bevel gear meshed with the third bevel gear is fixedly connected to the rotating shaft of the rear box wall.

Technical Field

The invention relates to the technical field of elevators, in particular to an automatic counterweight changing and cleaning protection device during barbell lifting.

Background

Flat bench press is a dominant beating action to strengthen the pectoral muscles. The bench press is a compound motion, which involves the motion of multiple joints, including the shoulder joint and elbow joint involved in the exercise. The most frequently used apparatus in the gymnasium is the flat-plate bench press, and people with large weight can be pushed.

Body-building has become an important mode of modern healthy life and stress relief, more and more people go farther on the body-building road, and barbell, which is an important and effective body-building action apparatus, also becomes an apparatus frequently used by people, and most beginners or deeply qualified body-building personnel can cause sports injury events due to over-weight or muscle fatigue when using barbells.

Disclosure of Invention

The technical problem is as follows: the barbell is an important and effective fitness equipment, and is also a frequently-used instrument for people, and most beginners or deeply qualified fitness personnel can cause sports injury due to excessive weight or muscle fatigue when using the barbell.

In order to solve the problems, the embodiment designs an automatic balancing weight changing block and a cleaning protection device when lifting a barbell, the automatic balancing weight changing block and the cleaning protection device when lifting a barbell of the embodiment comprises a working box, a working cavity is arranged in the working box, a lifting protection device for protecting body-building personnel when lifting the barbell is arranged in the working cavity, the lifting protection device comprises two moving boxes which are bilaterally and symmetrically connected with the inner wall of the front side of the working cavity in a sliding manner, two moving cavities with openings towards a symmetrical shaft are arranged in the two moving boxes, two box wall grooves which are communicated from left to right are arranged in the inner wall of the two moving cavities far away from the symmetrical shaft, a plurality of triangular blocking blocks which are adjusted according to actual conditions are fixedly arranged on the inner wall of the lower sides of the two moving cavities, and a plurality of barbell plates which are arranged between the two triangular blocking blocks and are in a sliding manner and are arranged according to actual, a barbell disc cavity which is communicated from left to right is arranged in the barbell disc, a plurality of barbell disc cavities are connected with barbell rods which extend to two of the movable cavities and are far away from the inner wall of the side of the symmetric shaft in a sliding manner, a plurality of triangular sliding blocks which are arranged according to actual conditions are fixedly connected to the barbell rods, the triangular sliding blocks which are positioned in the movable cavities are connected with the inner wall of the upper side of the barbell disc cavity in a sliding manner, two telecentric fixed blocks which are positioned on the barbell disc which is farthest away from the side of the symmetric shaft and are far away from the side of the symmetric shaft are fixedly connected to the barbell rods in a bilateral symmetry manner, two inlet fixed blocks which are positioned on the barbell disc which is closest to the side of the symmetric shaft and are close to the side of the symmetric shaft are fixedly connected to the outer section of the side of the movable cavity which is far away from the side of, two upper X-shaped rods positioned at the lower side of the two Y-shaped rods are hinged on the two Y-shaped rods, two lower X-shaped rods positioned at the lower side of the two upper X-shaped rods are hinged on the two upper X-shaped rods, a sliding groove rod which is hinged with the upper forked section of the lower X-shaped rod and the hinged part section of which can stretch and retract adaptively according to elasticity is hinged on the lower forked section of the upper X-shaped rod, two fixed hinged seats which are symmetrical in front and back and are fixedly connected with the inner wall of the lower side of the working cavity are fixedly connected on the lower X-shaped rod, according to the rotation of the chute rod and the upward sliding of the movable box, the body-building personnel can stably lift and stably descend when lifting the barbell so as not to be injured after taking off force, the barbell bar cleaning device is characterized in that a replacing device for adding barbell discs is arranged in the working cavity, a cleaning device for cleaning the barbell bars is arranged in the working cavity, and a power device for transmitting power is arranged in the working cavity.

Preferably, the lifting protection device further comprises two disc shafts which are symmetrically and rotatably connected with the inner walls of the left side and the right side of the working cavity, two discs are fixedly connected onto the two disc shafts, two rockers are hinged to the two discs close to the side end faces of the symmetric shafts, the two rockers are hinged to the two sliding groove rods, two rear box wall fixing blocks are symmetrically and fixedly connected to the inner wall of the rear side of the working cavity in the left-right direction, two spring rods are slidably connected into the two rear box wall fixing blocks, the upper end faces of the two spring rods are fixedly connected with two abutting blocks of which the lower end faces are connected with the upper end faces of the rear box wall fixing blocks through springs, two eccentric wheel shafts positioned at the upper sides of the two abutting blocks are rotatably connected onto the inner wall of the rear side of the working cavity, and two eccentric wheels of which the, according to the rotation of the two eccentric wheel shafts and the rotation of the two disk shafts, the two chute rods can swing up and down in a reciprocating manner, and the two movable boxes can move up and down in a reciprocating manner, so that a body builder can be protected when lifting a barbell.

Preferably, the replacing device comprises two bevel blocks which are in bilateral symmetry sliding connection with the inner wall of the rear side of the working cavity, the inner wall of the rear side of the working cavity is in bilateral symmetry fixed connection with rear box wall sliding blocks which are positioned between the two bevel blocks, the two rear box wall sliding blocks are in sliding connection with sliding rods which are in sliding connection with the two bevel blocks and close to the side end surfaces of the symmetrical shafts, the inner wall of the left side and the right side of the working cavity is in symmetric rotation connection with two reset wheel shafts which are positioned on the upper sides of the two bevel blocks and connected with the two disc shafts through belt pulleys, the two reset wheel shafts are fixedly connected with two reset wheels of which the outer circumferential end surfaces are wave-shaped grooves, the two sliding rods are connected with two fixed pins which are abutted against the wave-shaped grooves on the outer circumferential end surfaces of the reset wheels through sliding grooves, and the two sliding rods can extend into the two through grooves in the, two inclined plane piece up end fixedly connected with two connecting rods, two connecting rod up end fixedly connected with horizontal long pole, working chamber rear side inner wall fixedly connected with back tank wall dead lever, fixedly connected with carriage release lever on the horizontal long pole, the carriage release lever with back tank wall dead lever sliding connection, working chamber upside inner wall sliding connection extend to outside the working chamber and with carriage release lever up end fixed connection's rotation axis, the rotation axis is located rotate fixedly connected with knob on the working chamber outer section, according to the rotation of knob makes the carriage release lever shifts up, thereby makes two the slide bar is two to being close to the symmetry axis sideslip on the back tank wall sliding block, rethread two the rotation of reset wheel axle makes two the slide bar promotes one barbell piece butt on the barbell.

Preferably, the cleaning device includes a rotary plate shaft rotatably connected with the inner wall of the lower side of the working cavity, a rotary plate is fixedly connected with a rotary plate on the rotary plate shaft, a columnar protrusion is fixedly connected with the upper end face of the rotary plate, an upper box wall fixing shaft is fixedly connected with the inner wall of the upper side of the working cavity, a sector gear is rotatably connected with the upper box wall fixing shaft, a long straight section chute which is vertically communicated with the columnar protrusion and is slidably connected with the sector gear is arranged in the long straight section of the sector gear, a U-shaped cleaning block is slidably connected with the upper box wall fixing shaft, a rear end face of the U-shaped cleaning block is fixedly connected with a rack which is meshed with an arc section of the sector gear, and the U-shaped cleaning block is made to reciprocate on the barbell rod to clean the barbell.

Preferably, the power device comprises a motor fixedly connected with the rear inner wall of the working cavity, the left end face of the motor is provided with a first main shaft, the right end face of the motor is provided with a second main shaft, the first main shaft is connected with the left reset wheel shaft through a belt pulley, the second main shaft is connected with the right reset wheel shaft through a belt pulley, the two first bevel gears on the symmetrical shaft side are kept away from the disc through a fixedly connected disc shaft, the inner wall of the rear side of the working cavity is rotatably connected with two transmission shafts on the rear side of the disc shaft and connected with the two eccentric wheel shafts through a belt pulley, the two second bevel gears on the transmission shafts are meshed with the first bevel gears, the third bevel gear on the lower side of the turntable is fixedly connected with the upper wall of the rear side of the working cavity, the rear inner wall of the turntable shaft is fixedly connected with the rear side of the working cavity and the left eccentric wheel shaft through a belt pulley The rear box wall rotating shaft is fixedly connected with a fourth bevel gear meshed with the third bevel gear, and the two reset wheel shafts, the two disk shafts and the rotating disk shaft rotate according to the rotation of the first main shaft and the second main shaft, so that power is provided for the whole device.

The invention has the beneficial effects that: this device makes barbell and unnecessary barbell piece and the action of lifting up and putting down the barbell along with the fitness personnel through lift protection device and reciprocate from top to bottom together, thereby prevented to lead to taking off the possibility that the power produced to cause the injury to the fitness personnel because of the too big barbell of quality or muscle fatigue that sets up, and through changing the device for the automatic barbell piece that increases of fitness personnel, the clean barbell pole of wiping of rethread cleaning device, still provide power for whole device through power device, it is convenient to provide for the fitness personnel, the motion injury incident that has also prevented probably taking place.

Drawings

For ease of illustration, the invention is described in detail by the following specific examples and figures.

FIG. 1 is a schematic view of an overall structure of an automatic weight changing block and a cleaning protection device for lifting a barbell according to the present invention;

FIG. 2 is a partial structural view of the joint between the upper X-shaped rod 41 and the lower X-shaped rod 43 of FIG. 1 via the chute 44;

FIG. 3 is an enlarged schematic view of FIG. 1 at "B";

fig. 4 is a schematic structural view in the direction "C" of fig. 1.

Detailed Description

The invention will now be described in detail with reference to fig. 1-4, for ease of description, the orientations described below will now be defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The invention relates to an automatic balancing weight changing and cleaning protection device during barbell lifting, which is mainly applied to the process of barbell lifting during body building, and the invention is further explained by combining the attached drawings of the invention: the invention relates to an automatic balancing weight changing and cleaning protection device during barbell lifting, which comprises a working box 11, wherein a working cavity 12 is arranged in the working box 11, a lifting protection device 901 for protecting a body-building worker during barbell lifting is arranged in the working cavity 12, the lifting protection device 901 comprises two moving boxes 28 which are bilaterally and symmetrically connected with the inner wall of the front side of the working cavity 12 in a sliding manner, two moving cavities 60 with openings towards a symmetrical shaft are arranged in the two moving boxes 28, two box wall grooves 58 which are bilaterally communicated are arranged in the inner walls of the two moving cavities 60 far away from the symmetrical shaft, a plurality of triangular blocking blocks 61 which are adjusted according to actual conditions are fixedly arranged on the inner walls of the lower sides of the two moving cavities 60, a plurality of barbells 64 which are positioned between the two triangular blocking blocks 61 and are arranged according to actual conditions are connected in a sliding manner on the lower sides of the two moving cavities 60, barbell plates 64 are internally provided with barbell, a plurality of barbell bar 25 extending to the two barbell disc cavities 63 and outside the inner wall of the movable cavity 60 far away from the symmetrical axis are slidably connected in the barbell bar 63, a plurality of triangular sliding blocks 23 arranged according to actual conditions are fixedly connected to the barbell bar 25, a plurality of triangular sliding blocks 23 positioned in the movable cavity 60 are slidably connected with the inner wall of the upper side of the barbell disc cavities 63, two telecentric fixing blocks 26 positioned outside the side end of the barbell disc 64 far away from the symmetrical axis and positioned on the barbell bar 25 are fixedly connected in a bilateral symmetry manner, two telecentric fixing blocks 34 positioned outside the side end of the barbell disc 64 closest to the symmetrical axis and positioned close to the side end of the symmetrical axis and positioned on the barbell bar 25 in a bilateral symmetry manner, two circular rings 24 are fixedly connected to the sections of the movable cavity 60 far away from the side end of the symmetrical axis and positioned outside the barbell disc, and two Y-shaped rods 27 are fixedly connected to the lower end faces of the two circular rings 24, two upper X-shaped rods 41 positioned at the lower side of the two Y-shaped rods 27 are hinged on the two Y-shaped rods 27, two lower X-shaped rods 43 positioned at the lower side of the two upper X-shaped rods 41 are hinged on the two upper X-shaped rods 41, a chute rod 44 which is hinged with the upper forked section of the lower X-shaped rod 43 and the hinged partial section of which can adaptively stretch according to elasticity is hinged on the lower forked section of the upper X-shaped rod 41, two fixed hinged seats 42 which are symmetrical in the front-back direction and fixedly connected with the inner wall at the lower side of the working cavity 12 are fixedly connected on the lower X-shaped rod 43, according to the rotation of the chute rod 44 and the upward sliding of the movable box 28, a fitness person can stably lift and stably descend when lifting a barbell without being injured after force removal, a replacing device for adding barbell discs is arranged in the working cavity 12, and a cleaning device 903 for cleaning the barbell rod 25 is arranged in the working cavity 12, a power device 904 for transmitting power is arranged in the working cavity 12.

According to the embodiment, the lifting protection device 901 will be described in detail below, the lifting protection device 901 further includes two disc shafts 48 symmetrically and rotatably connected to the inner walls of the left and right sides of the working chamber 12, two discs 46 are fixedly connected to the two disc shafts 48, two rockers 45 are hinged to the two discs 46 near the side end faces of the symmetrical shafts, the two rockers 45 are hinged to the two sliding groove rods 44, two rear tank wall fixing blocks 30 are fixedly connected to the inner wall of the rear side of the working chamber 12 symmetrically and transversely, two spring rods 29 are slidably connected to the two rear tank wall fixing blocks 30, two abutting blocks 31 with lower end faces connected to the upper end faces of the rear tank wall fixing blocks 30 through springs are fixedly connected to the upper end faces of the two spring rods 29, two eccentric wheel shafts 32 located above the two abutting blocks 31 are rotatably connected to the inner wall of the rear side of the working chamber 12, two eccentric wheels 33 with upper end surfaces abutting against the lower end surfaces of the movable boxes 28 are fixedly connected to the two eccentric wheel shafts 32, and the two chute rods 44 and the two movable boxes 28 can reciprocate up and down according to the rotation of the two eccentric wheel shafts 32 and the rotation of the two disc shafts 48, so that the body builder can be protected when lifting the barbell.

According to the embodiment, the following describes in detail the replacing device 902, the replacing device 902 includes two bevel blocks 53 connected to the rear inner wall of the working chamber 12 in a bilateral symmetry sliding manner, the rear inner wall of the working chamber 12 in the bilateral symmetry sliding manner is fixedly connected to a rear box wall 52 between the two bevel blocks 53, the two rear box wall sliding blocks 52 are connected to a sliding rod 51 connected to the two bevel blocks 53 in a sliding manner, the two reset wheel shafts 54 located above the two bevel blocks 53 and connected to the two disc shafts 48 through belt pulleys are connected to the rear inner wall of the working chamber 12 in the bilateral symmetry rotating manner, the two reset wheel shafts 54 are fixedly connected to two reset wheels 56 with wavy grooves on the outer circumferential end surfaces, the two slide rods 51 are connected to two fixing pins 55 connected to the reset wheels 56 through sliding grooves and abutted against the wavy grooves on the outer circumferential end surfaces of the reset wheels 56, two slide bars 51 can extend into two through grooves 57 in two moving cavities 60 when the two moving boxes 28 are far away from the inner wall of the side of the symmetry axis, two connecting rods 13 are fixedly connected to the upper end faces of two inclined blocks 53, the horizontal long rod 21 is fixedly connected to the upper end faces of two connecting rods 13, the rear wall fixing rod 20 is fixedly connected to the rear inner wall of the working cavity 12, the moving rod 17 is fixedly connected to the horizontal long rod 21, the moving rod 17 is slidably connected to the rear wall fixing rod 20, the rotating shaft 18 which extends out of the working cavity 12 and is fixedly connected to the upper end face of the moving rod 17 is slidably connected to the upper inner wall of the working cavity 12, the rotating shaft 18 is located at the outer section of the working cavity 12 and is rotatably and fixedly connected to a knob 19, and the moving rod 17 moves upwards according to the rotation of the knob 19, so that the two slide rods 51 slide on the two rear box wall slide blocks 52 toward the side close to the symmetry axis, and then the two slide rods 51 push one barbell plate 64 to the barbell to abut through the rotation of the two reset axles 54.

In the following, the cleaning device 903 is described in detail according to an embodiment, said cleaning device 903 comprises a turntable shaft 38 rotatably connected to the inner wall of the lower side of said working chamber 12, a rotary disc 68 is fixedly connected on the rotary disc shaft 38, a columnar bulge 66 is fixedly connected on the upper end surface of the rotary disc 68, the inner wall of the upper side of the working cavity 12 is fixedly connected with an upper box wall fixing shaft 15, the upper box wall fixing shaft 15 is rotatably connected with a sector gear 65, a long straight section sliding groove 67 which is communicated up and down and is connected with the columnar bulge 66 in a sliding way is arranged in the long straight section of the sector gear 65, the upper box wall fixing shaft 15 is connected with a U-shaped cleaning block 40 in a sliding way, the rear end face of the U-shaped cleaning block 40 is fixedly connected with a rack 69 engaged with the circular arc section of the sector gear 65, the U-shaped cleaning block 40 is caused to reciprocate left and right on the barbell bar 25 in accordance with the rotation of the turntable shaft 38 to wipe the barbell bar 25.

According to the embodiment, the power device 904 is described in detail below, the power device 904 includes a motor 16 fixedly connected to the inner wall of the rear side of the working chamber 12, the left end surface of the motor 16 is provided with a first main shaft 14, the right end surface of the motor 16 is provided with a second main shaft 22, the first main shaft 14 is connected to the reset wheel shaft 54 of the left side through a belt pulley, the second main shaft 22 is connected to the reset wheel shaft 54 of the right side through a belt pulley, two first bevel gears 47 located on the sides of the discs 46 away from the symmetry axis are fixedly connected to the two disc shafts 48, two transmission shafts 49 located on the rear side of the two disc shafts 48 and connected to the two eccentric wheel shafts 32 through a belt pulley are rotatably connected to the inner wall of the rear side of the working chamber 12, two second bevel gears 50 engaged with the two first bevel gears 47 are fixedly connected to the two transmission, the third bevel gear 37 positioned on the lower side of the turntable 68 is fixedly connected to the turntable shaft 38, the rear wall rotating shaft 39 positioned on the rear side of the turntable shaft 38 and connected with the left eccentric wheel shaft 32 through a belt pulley is fixedly connected to the inner wall of the rear side of the working cavity 12, the fourth bevel gear 36 meshed with the third bevel gear 37 is fixedly connected to the rear wall rotating shaft 39, and the two return wheel shafts 54, the two disk shafts 48 and the turntable shaft 38 rotate according to the rotation of the first main shaft 14 and the second main shaft 22, so that power is provided for the whole device.

The following will describe in detail the steps of using the automatic weight-changing block and the cleaning protection device when lifting barbell with reference to fig. 1 to 4: initially, the motor 16 is off, the travel bar 17 is at the lowermost end, and the barbell bar 25 and travel box 28 are at the lowermost end.

In preparation, all barbell plates are placed in the movable box 28 and are held in contact with the plurality of triangular blocks 61.

In operation, the knob 19 is rotated to move the rotating shaft 18 upward, the moving rod 17 is moved upward, the long horizontal rod 21 is moved upward, the two connecting rods 13 are moved upward, the two sliding rods 51 are slid rightward by the two bevel blocks 53 fixedly connected to the two connecting rods 13 and the two sliding rods 51 slidably connected to the two bevel blocks 53, the motor 16 is started, the first main shaft 14 and the second main shaft 22 are rotated, the left reset wheel shaft 54 is rotated by the rotation of the first main shaft 14 and the right reset wheel shaft 54 is rotated by the rotation of the second main shaft 22, the two reset wheel shafts 54 are rotated by the rotation of the two reset wheel shafts 56, the two fixing pins 55 are moved toward the side close to the symmetry axis and push the number of barbell pieces rotatably arranged according to the knob 19 onto the barbell bar 25 to be caught by the abutment of the plurality of triangular sliding blocks 23, the rotation of the two reset wheel shafts 54 rotates the two disc shafts 48 by the belt pulley, the rotation of the two disk shafts 48 makes the two disks 46 rotate, so that the rocker 45 swings up and down in a reciprocating manner, so that the chute rod 44 swings up and down in a reciprocating manner, the Y-shaped rod 27 moves up and down in a reciprocating manner along with the action of lifting up and down the barbell by the exerciser through the hinging of the lower X-shaped rod 43 with the upper X-shaped rod 41 and the upper X-shaped rod 41 with the Y-shaped rod 27 and the fixed connection of the ring 24 with the Y-shaped rod 27, the rotation of the two disk shafts 48 also makes the two transmission shafts 49 rotate through the meshing of the two first bevel gears 47 with the two second bevel gears 50, the rotation of the two transmission shafts 49 makes the two eccentric wheel shafts 32 rotate through the connection of the belt pulleys, so that the two moving boxes 28 and the barbell plates 64 abutted against the plurality of triangular blocks 61 in the two moving boxes 28 move up and down in a reciprocating manner along with the action of lifting up and down the barbell by the exerciser, the rotation of the left eccentric wheel shaft 32 rotates the rear box wall rotating shaft 39 through the belt pulley, the fourth bevel gear 36 and the third bevel gear 37 are meshed to rotate the turntable shaft 38, so that the turntable 68 rotates, the rotation of the turntable 68 enables the sector gear 65 to swing back and forth left and right through the sliding connection of the columnar protrusion 66 and the long straight section sliding groove 67, the rack 69 is made to move back and forth left and right, and the U-shaped cleaning block 40 is made to move back and forth left and right on the barbell bar 25 to wipe the barbell bar 25.

The invention has the beneficial effects that: this device makes barbell and unnecessary barbell piece and the action of lifting up and putting down the barbell along with the fitness personnel through lift protection device and reciprocate from top to bottom together, thereby prevented to lead to taking off the possibility that the power produced to cause the injury to the fitness personnel because of the too big barbell of quality or muscle fatigue that sets up, and through changing the device for the automatic barbell piece that increases of fitness personnel, the clean barbell pole of wiping of rethread cleaning device, still provide power for whole device through power device, it is convenient to provide for the fitness personnel, the motion injury incident that has also prevented probably taking place.

In the above manner, a person skilled in the art can make various changes depending on the operation mode within the scope of the present invention.